CN105027840A - Remodeling injection moulding lawn machine gear box with equal pressure logistic curve arc wave linear ripple - Google Patents

Remodeling injection moulding lawn machine gear box with equal pressure logistic curve arc wave linear ripple Download PDF

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Publication number
CN105027840A
CN105027840A CN201510011758.XA CN201510011758A CN105027840A CN 105027840 A CN105027840 A CN 105027840A CN 201510011758 A CN201510011758 A CN 201510011758A CN 105027840 A CN105027840 A CN 105027840A
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CN
China
Prior art keywords
gear
clutch
shift fork
box
staggered
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CN201510011758.XA
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Chinese (zh)
Inventor
苏克
叶晓波
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Ningbo Daye Garden Equipment Co Ltd
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Ningbo Daye Garden Equipment Co Ltd
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Priority to CN201510011758.XA priority Critical patent/CN105027840A/en
Publication of CN105027840A publication Critical patent/CN105027840A/en
Pending legal-status Critical Current

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Abstract

A remodeling injection moulding lawn machine gear box with equal pressure logistic curve arc wave linear ripples comprises a flange (1a5) and a rear dial (1a7) arranged in a rear end; side pumping is hard, so the flange (1a5) arranged in middle of a clutch slide piece and the dial (1a7) arranged in the rear end of the clutch slide piece are respectively provided with a plurality of openings in staggering complementation; demoulding is convenient, dual-layer flange and dial making difficulty can be solved, and a shift fort can be plugged between the dual-layer flange and the dial, so the left side and right side can obtain forces, i.e., the left and right sides can receive force from the shift fork, thus foundamentally solving the clutch errors; in a segment in which layout curves of a main form of the clutch slide piece and a clutch block are in logarithm spiral, so the logistic curve arc wave linear ripple clutch is more close to an advanced mathematics science basis in which pressure angles are equal in a random place, and the clutch is more stable and reliable.

Description

There is equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box
Technical field
The present invention relates to a kind of for garden, the hay mower that the places such as park and road side cut the grass on a lawn, especially equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box is had, its great undertaking be clutch slider entirety be provided with in the middle flange (105) and in its back-end portion be provided with rear driver plate (1a7), cause is that the bad Side of warm extrusion powder metallurgy takes out, the flange (105) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate (1a7) that portion is provided with in its back-end are equipped with the staggered opening of multiple complementation, so both conveniently stripped, stride across the difficulty that warm extrusion powder metallurgy can not make double-deck flange and driver plate, facilitate again double-deck flange and driver plate therebetween plug-in mounting enter shift fork, make left and right all capable namely from close the power of shift fork of can obtaining, fundamentally solve clutch not slip up.What the end of clutch slider and clutch block was provided with along end circumference multiplely has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each clutch cone is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), that is be one section of logatithmic spiral at the contour curve of the dominant shape state of described clutch slider and clutch block, so that when having the straight ripple clutch of logarithmic curve arc wave closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable.Explore warm extrusion powder metallurgy manufacture method also to innovate to some extent.
Background technology
Hay mower is widely used in by sometimes mowing from walking the mode sometimes certainly do not walked selected by the hobby of people.Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block movement vertically carry out clutch.The clutch block of the arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of prior art, is only carry out clutch by the circular cone of clutch block side, needs larger axial adhesion, cause the damage phenomenon that interior pressure ring washer ruptures frequently to occur; In engaging process, produce frictional heat between taper seat, need apply oil in gear-box; And between taper seat, have friction to have relative sliding, consumed power.No matter hay mower gear-box is Plastic or metal species, is subject to the restriction such as technology and cost, and certainly walk the not steady and insecure situation of clutch and happen occasionally, solve sporadic not clutch problem, be the international hard nut to crack of industry always.
In order to overcome hay mower prior art rear wheel drive decelerator in clutch caused by the deficiency of duty, simultaneously also in order to invent several dissimilar hay mower clutch and decelerator, the present inventor is with the lifetime of working experience both at home and abroad, multiple design and innovation are done, the perfection pursuing invention just like the mankind is forever continuous, and just the practical plan of multiple progressively Improvement and perfection is explained orally in detail in conjunction with multiple diagram below.
The first string is to provide a kind of improvement of rear-guard speed-reducing clutch of hay mower traverse gear, also can be described as sine wave type clutch block, one can make interior pressure pad sheet not easy fracture, and two can make the duty of relative sliding consumed power and frictional heating between clutch part make moderate progress.
The foundation that the first string solves the technical scheme that its technical problem is taked is:
The juncture of the fastener of mechanical clutch has friction and the large class of rigidity two, and friction class can be used for higher speed but easily slides and heating; And have shock and vibration during the higher speed joints such as category of rigid such as jaw clutch; For this reason, the present invention existing side circular cone friction clutch has again the sinusoidal wave semi-rigid clutch of end face, can say with this perhaps from mechanical clutch, and this is the rigidity of clutch engagement and the ingenious combination of friction two class junctures.
The first string solves the equation of the technical scheme that its technical problem is taked and modeling method is:
Adopt PRO/ENGINEERWILDFIRE mapping software, newly establish working directory, newly-built part, 2 concentric circles painted by grass.
Open variable cross section scanning (VarSectSweep) instruction, choosing above 2 circles is track while scan and reference locus.
Draw the straight line of parallel 2 disks, length L=(D-d)/2, and corresponding circle edge projection line.
Set up parameter (PARAMETER) 1:C real number (realnumber), can follow according to concrete operating mode assignment between 0.01-1, such as 0.3.
Set up parameter (PARAMETER) 2:N integer (integer), can follow according to concrete operating mode choosing value between 2-100, such as 13.
Opening relationships (RELATION), namely sinusoidal wave equation of the present invention is:
SDi＝C＊SIN(TRAJPAR＊360＊N)
In above formula, i is dimension figure sequence number; SIN=SINE, SIN function; TRAJPAR, lopcus function.
Again then, adopt and rotate, merge, the instructions such as hypostazation.
Special needs to be pointed out is, waveform of the present invention also can adopt other waveform, the slightly round and smooth waveform of such as other multiple mathematical function or other non-precipitous broken line.
The first string is also invention, and the technical scheme taked is:
A kind of rear drive decelerating clutch sine wave type clutch block of lawn-mower, the i.e. self-moving lawn mower sine wave type clutch block of the arrangement of clutch in rear wheel drive gear reduction unit, be made up of original side circular cone clutch block of the arrangement of clutch be located in rear wheel drive gear reduction clutch and the end face sine wave type clutch block that is newly provided with, it is characterized in that the described end face being located at the side circular cone clutch block of the arrangement of clutch in rear wheel drive gear reduction clutch is sine wave type clutch block.And the parts of clutch related to the present invention be still the skew back taper seat of gear internal and the newly-increased wave mode face can matched with sine wave type clutch block or other can with the face of the sine wave type clutch block clutch such as protruding envelope of multiple spot etc.
The beneficial effect of the first string is: the design utilizes existing speed-reducing clutch shell and most of part, only change clutch block and the minority part such as phase accessory with it, both having improved low speed jaw clutch is that sine wave type clutch block is with the occasion making it can be used for higher speed, utilize the common load sharing of end face and side to which in turn improve the friction heating operating mode of side circular cone clutch block simultaneously, thus the phenomenon that in existing mower rear gear box, pressure clutch block pad often ruptures can be improved, following originally perhaps from mechanical clutch, the rigidity of fastener and the ingenious combination of friction two class junctures.
Below in conjunction with drawings and Examples to the first scheme be also invention further illustrate.
Fig. 1 is the first scheme is also that schematic three dimensional views is looked on a left side of inventing.
Fig. 2 is the first scheme is also that schematic three dimensional views is looked on the right side of inventing.
Fig. 3 is the first scheme is also that two-dimensional representation is looked on the right side of inventing.
Fig. 4 is the first scheme is also that the B of invention is to profile.
Fig. 5 is the first scheme is also the forward sight two-dimensional representation of inventing.
Fig. 6 is the first scheme is also that the A of invention is to profile.
As shown in Figures 1 to 6, in figure, 1a. is clutch slider, is sine wave type clutch block herein.
Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, clutch block (1a) movement is vertically engaged.The clutch block (1a) of the arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of this technology, the circular cone not only by clutch block side engages, and has the waveform of end face to carry out assist in engagement.When operation pedestrian unclamps from walking control crank, by steel wire rope and driving lever elastic reset, clutch block (1a) movement is vertically left.Because end face is that round and smooth sinusoidal waveform more easily leaves than dental inlay clutch block.
First scheme provides a kind of improvement of rear-guard speed-reducing clutch of hay mower traverse gear, also can be described as sine wave type clutch gear, one can make interior pressure pad sheet not easy fracture, and two can make the duty of relative sliding consumed power and frictional heating between clutch part make moderate progress.
The technical scheme that first scheme is taked is:
A kind of hay mower rear-guard speed-reducing clutch sine wave type clutch gear, the i.e. self-moving lawn mower sinusoidal waveform clutch gear of the arrangement of clutch in rear wheel drive gear reduction unit, be made up of the medial surface circular cone sinusoidal waveform clutch inwall of the arrangement of clutch be located in rear wheel drive gear reduction clutch and kick and gear, it is characterized in that the interior face of the described arrangement of clutch be located in rear wheel drive gear reduction clutch is circular cone or has the waveform particularly inwall of sine-shaped equipped clutch block and multiple kick, namely be equipped with associated clutch block be the skew back taper seat of gear internal and the sinusoidal waveform wave mode face of matching or other can with the face of the waves clutch block clutch such as protruding envelope of multiple spot etc.
The beneficial effect of first scheme is: the design utilizes existing speed-reducing clutch shell and most of part, only change clutch gear and the minority part such as phase accessory with it, both having improved low speed jaw clutch is that sine wave type clutch gear is with the occasion making it can be used for higher speed, utilize the common load sharing of end face and side to which in turn improve the friction heating operating mode of inner side circular cone clutch gear simultaneously, thus the phenomenon that in existing mower rear gear box, pressure clutch block pad often ruptures can be improved, perhaps from mechanical clutch fundamentally, the rigidity of fastener and the ingenious combination of friction two class junctures.
Below in conjunction with drawings and Examples to first scheme be also invention be described further.
The schematic perspective view of Fig. 7 to be first scheme be also invention sine wave type clutch gear;
The front elevational schematic of Fig. 8 to be first scheme be also invention sine wave type clutch gear;
The cross-sectional schematic of Fig. 9 to be first scheme be also invention sine wave type clutch gear;
As shown in Fig. 7, Fig. 8, Fig. 9,
In figure: 1b. is sine wave type clutch inwall;
2b. is multiple microspikes;
3b. is gear.
Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, clutch block movement is vertically engaged.The clutch gear of the arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of this technology, not only engages by the circular cone of clutch gear medial surface, and particularly sinusoidal wave inwall and multiple little micro-protuberance carry out assist in engagement the i.e. waveform of distortion.When operation pedestrian unclamps from walking control crank, by steel wire rope and driving lever elastic reset, clutch block movement is vertically made to leave this clutch gear.Because inwall is that round and smooth sinusoidal waveform more easily leaves than dental inlay clutch block.
The third scheme is also invention, and the technical scheme taked is:
A kind of hay mower gears to engage and disengage decelerator shift fork, the shift fork of the arrangement of clutch in the gears to engage and disengage decelerator of i.e. self-moving lawn mower rear wheel drive, by upper shift fork head (1c), set aside jaw (2c), arched arm (3c), ((9c) formed minor axis, and all there is the minor axis (9c) of coaxial line the top and bottom of described shift fork; Described minor axis fixes link by arched arm (3c), what link respectively is upper shift fork head (1c) and sets aside jaw (2c) simultaneously, it is characterized in that described upper shift fork head (1c) and set aside jaw (2c) symmetrical about main shaft (7c); Can find out from the vertical view of Fig. 3 shift fork, particularly described upper shift fork head (1c) and the outermost end setting aside jaw (2c) are protruded along main shaft (7c), for the plane at the axial line relative to described minor axis (9c) and the camber line place, middle part relative to arched arm (3c).Also can find out from the vertical view of Fig. 3 shift fork, it is upper and protrude that upper shift fork head (1) and the downward projection setting aside jaw (2c) drop on main shaft (7c); The axial line of described minor axis (9c) not in the plane at the camber line place, middle part relative to arched arm (3c), also not on main shaft (7c).Main shaft (7c) is the main shaft of the arrangement of clutch in gears to engage and disengage decelerator, is also self-moving lawn mower rear wheel drive main shaft.Upper end minor axis is also provided with double flute and screw thread to lay pull bar and to be handled by bracing wire; The existing desired power of dialling of shift fork is made to rotate freely at certain angle again like this.
The beneficial effect of the third scheme is: the described upper shift fork head of the design is symmetrical and protrusion with setting aside jaw, dial point by original one and be improved to two groups of balanced points, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of gears to engage and disengage decelerator can be continued, thus promote the quality of hay mower.
Below in conjunction with drawings and Examples to the third scheme be also invention further illustrate.
Figure 10 is the third scheme is also the schematic diagram of shift fork of invention;
Figure 12 is the schematic diagram of the gears to engage and disengage decelerator of the third scheme;
Figure 11 is the third scheme is also the vertical view of shift fork of invention.
As shown in Figure 10 to Figure 12:
In figure, 1c. is upper shift fork head;
In figure, 2c. sets aside jaw;
In figure, 3c. is arched arm;
In figure, 4c. is slip pulling sleeve;
In figure, 5c. is thrust bearing shim;
In figure, 6c. is crossed helical gears;
In figure, 7c. is main shaft;
In figure, 8c. is lower house;
In figure, 9c. is minor axis;
Operation pedestrian pulls from walking control crank, by steel wire rope and pull bar, that make to be linked by screw thread and two grooves and by being installed on the minor axis (9c) of gear reduction clutch housing as the upper and lower side of lower house (8c) rotates certain angle, and pass through arched arm (3c) interlock upper shift fork head (1c) and set aside jaw (2c), promote slip pulling sleeve (4c) and promote Engaging-and-disengaging bearing pad (5c) and clutch block moves vertically, thus the clutch gear of arrangement of clutch engaged in the rear wheel drive gear reduction clutch of traverse gear and crossed helical gears (6c) carry out from walking.When operation pedestrian unclamping from walking control crank, making shift fork elastic reset by steel wire rope and pull bar, making clutch block movement vertically to leave clutch gear.That is, clutch gear decelerator shift fork essence controls certainly walking of hay mower.
4th kind of scheme is also invention, and the technical scheme taked is:
The single side pushing sliding sleeve of the arrangement of clutch in a kind of gears to engage and disengage decelerator of self-moving lawn mower rear wheel drive, namely hay mower gears to engage and disengage decelerator single side pushing sliding sleeve (4d), by sliding sleeve (41d), single group of limit (42d), inner cone flange (43d) formed; The sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is provided with discoid list and dials limit (42d); Dial on limit (42d) at the list of described single side pushing sliding sleeve and be provided with inner cone flange (43d), the medial surface of inner cone flange (43d) is taper seat, is preferably not more than 30 degree with axial angle.Because described single side pushing sliding sleeve (4d) is set with and slides on main shaft, the axis (7d) of therefore described single side pushing sliding sleeve (4d) coincides with the main shaft (7d) of the arrangement of clutch in hay mower gears to engage and disengage decelerator, and this is also self-moving lawn mower rear wheel drive main shaft.The outside of the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is movably installed with shift fork; Shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, namely the inner cone flange (43d) dialling limit (42d) by described list contacts thrust bearing shim, thus makes arrangement of clutch work.It is in the form of annular discs that limit (42d) dialled by the list of described single side pushing sliding sleeve (4d); The back side that the disk on limit (42d) dialled by described list all can contact thrust bearing shim with described inner cone flange (43d).The upper end minor axis of shift fork is also provided with double flute and screw thread to lay pull bar and to be handled by bracing wire, thus the existing desired power of dialling of shift fork is rotated freely at certain angle again.
The beneficial effect of the 4th kind of scheme is: described hay mower gears to engage and disengage decelerator single side pushing sliding sleeve (4d) of the design, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of gears to engage and disengage decelerator can be continued, thus promote the quality of hay mower.
A kind of hay mower gears to engage and disengage decelerator single side pushing sliding sleeve of the 4th kind of scheme, by sliding sleeve (41d), single group of limit (42d), inner cone flange (43d) formed; It is characterized in that: the sliding sleeve (41d) of described single side pushing sliding sleeve is provided with single group of limit (42d); Dial on limit (42d) at the list of described single side pushing sliding sleeve and be provided with inner cone flange (43d).The sliding sleeve (41d) of particularly described single side pushing sliding sleeve (4d) is provided with discoid list and dials limit (42d).
Below in conjunction with drawings and Examples to the 4th kind of scheme be also invention further illustrate.
Figure 13 is the 4th kind of scheme is also the schematic diagram invented;
Figure 14 is the schematic diagram of the gears to engage and disengage decelerator of the 4th kind of scheme;
Figure 15 is the 4th kind of scheme is also the cutaway view invented.
As shown in FIG. 13 to 15:
1d. be upper shift fork head;
2d. be set aside jaw;
3d. is arched arm;
4d. be slip pulling sleeve;
5d. is thrust bearing shim;
6d. is crossed helical gears;
7d. is main shaft;
8d. is lower house;
9d. is minor axis;
42d. is monolateral;
43d. is inner cone flange.
Operation pedestrian pulls from walking control crank, by steel wire rope and pull bar, that make to be linked by screw thread and two grooves and by being installed on the minor axis with upper and lower side of gear reduction clutch housing as lower house 8 rotates certain angle, and by arched arm 3 interlock upper shift fork head 1 with set aside jaw 2, limit 42 dialled by the list synchronously contacted by described 2 shift fork heads and promote slip pulling sleeve 4, and by the back side on the sliding sleeve 41 of described slip pulling sleeve and single group of limit 42 with the internal conical surface on being located on single group of limit 42 inner cone flange 43 promotes Engaging-and-disengaging bearing pad 5 jointly and clutch block moves axially along main shaft 7, thus the clutch gear of arrangement of clutch engaged in the rear wheel drive gear reduction clutch of traverse gear and crossed helical gears 6 carry out from walking.When operation pedestrian unclamping from walking control crank, making shift fork elastic reset by steel wire rope and pull bar, making clutch block movement vertically to leave clutch gear.That is, clutch gear decelerator shift fork and single side pushing sliding sleeve of the present invention 4 essence control certainly walking of hay mower jointly.
5th kind of scheme is also invent the technical scheme taked to be:
A kind of oil port of speed reducer of lawn grass cutter, the i.e. hydraulic fluid port placed with the side of rear wheel drive gear reduction unit of self-moving lawn mower, by the side platform (4e) of lower house side being located at rear wheel drive gear reduction clutch, be located at the screwed hole (2e) of decelerator side instead of bottom surface and be located at the below of screwed hole and the breach (3e) of the bottom surface in housing formed, it is characterized in that the described screwed hole being located at decelerator is in housing side, that is, the axis of particularly described screwed hole (2e) is not orthogonal to bottom surface.Conveniently the demoulding is namely without side core-pulling, and the side platform (4e) putting spiral shell mosquito hole is that arc component large with top is directly connected instead of there is indentation centre.Described screwed hole for being screwed into hydraulic fluid port screw, therefore makes the external diameter of threaded line press close to end inner face as far as possible, so that few retained oil during draining.Described be located at the below of screwed hole and the breach (3e) of the bottom surface in housing can be cylindrical, the shallow breach of rectangle or other shape, establishes to prevent screw from not touching.
The 5th kind of adopted reason of scheme is:
Hay mower is widely used in by sometimes mowing from walking the mode sometimes certainly do not walked selected by the hobby of people.Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block movement vertically carry out clutch.The clutch block of the arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of prior art, is only carry out clutch by the circular cone of clutch block side, needs larger axial adhesion, cause the damage phenomenon that interior pressure ring washer ruptures frequently to occur; In engaging process, produce frictional heat between taper seat, need apply oil in gear-box.And original drain tap is located at the bottom of the lower casing of decelerator, as shown in the lower hydraulic fluid port (1e) of Fig. 1.Lower hydraulic fluid port has 2 shortcomings, and one is that the pad that protrudes of the height height below hull outside and nut easily touch the axle of height-regulating device; Another be the female plateau of the protrusion of enclosure interior higher than bottom surface, in shell when causing draining below the upper plane of the plateau of described lower hydraulic fluid port, retained oil is a lot.
In order to overcome hay mower prior art rear wheel drive decelerator and decelerator bottom hydraulic fluid port caused by bottom easily touch, the deficiency that draining is detained, the invention provides the improvement of a kind of rear-guard speed-reducing clutch of hay mower traverse gear and the hydraulic fluid port of decelerator, also can be described as the hydraulic fluid port of the decelerator that side is placed, one can make bottom not touch,, two can make draining delay less.
5th kind of scheme is also the beneficial effect of the invention: the design utilizes existing speed-reducing clutch shell and most of part, the minority part only changed lower house and match with it, the length of such as screw, both not touching by dress of decelerator outside had been improved, the problem that the oil improving again its inside is detained.
Below in conjunction with drawings and Examples to the 5th kind of scheme be also invention be described further.
Figure 16 is the profile of former lower casing hydraulic fluid port;
Figure 17 is the upward view of former lower casing hydraulic fluid port;
Figure 18 is the 5th kind of scheme is also the schematic diagram invented;
Figure 19 is the 5th kind of scheme is also the profile invented;
Figure 20 is the 5th kind of scheme is also the assembling section invented.
As shown in Figure 16, Figure 17, Figure 18, Figure 19 and Figure 20:
In figure, 1e. is crude oil mouth;
In figure, 2e. is threaded hydraulic fluid port;
In figure, 3e. is lower breach;
In figure, 4e. is side platform;
Below in conjunction with drawings and Examples, be also that invention is described further to the 5th kind of scheme:
5th kind of scheme is a kind of oil port of speed reducer of lawn grass cutter, the i.e. hydraulic fluid port placed with the side of rear wheel drive gear reduction unit of self-moving lawn mower, it mainly comprises the side platform (4e) of the lower house side being located at rear wheel drive gear reduction clutch, be located at the screwed hole (2e) making hydraulic fluid port of decelerator side instead of bottom surface and be located at the below of screwed hole and the breach (3e) of the bottom surface in housing, it is characterized in that the described screwed hole being located at decelerator is in housing side, that is, the axis of particularly described screwed hole (2e) is not orthogonal to bottom surface.Conveniently the demoulding is namely without side core-pulling, and the side platform (4e) putting spiral shell mosquito hole is that arc component large with top is directly connected instead of there is indentation centre.Described screwed hole for being screwed into hydraulic fluid port screw, therefore makes the external diameter of threaded line press close to end inner face as far as possible, so that few retained oil during draining.Described be located at the below of screwed hole and the breach (3e) of the bottom surface in housing can be cylindrical, the shallow breach of rectangle or other shape, establishes to prevent screw from not touching.
A kind of oil port of speed reducer of lawn grass cutter, the side platform (4e) mainly comprising the lower house side being located at decelerator and the screwed hole (2e) it being made hydraulic fluid port and be located at the below of screwed hole and the breach (3e) of the bottom surface in housing, it is characterized in that the described screwed hole being located at decelerator is in housing side, that is, the axis of particularly described screwed hole (2e) is not orthogonal to bottom surface.The side platform (4e) putting spiral shell mosquito hole is that arc component large with top is directly connected instead of there is indentation centre.The external diameter of the threaded line of described screwed hole presses close to end inner face.Described be located at the below of screwed hole and the breach (3e) of the bottom surface in housing can be cylindrical, the shallow breach of rectangle or other shape.Described screwed hole (2e) is in housing side, and that is, the axis of particularly described screwed hole (2e) is not orthogonal to bottom surface.And the described side platform (4e) putting spiral shell mosquito hole is that arc component large with top is directly connected instead of there is indentation centre.
In the specific implementation, at the described screwed hole (2e) making side hydraulic fluid port, assembling pad and screw.When releasing lubricating oil, back out screw, because flow export is lower, and have described breach (3e), oil is just few to be detained.Due to the new design from bottom surface to side of the described screwed hole (2e) making side hydraulic fluid port, solve and easily touch problem at the bottom of protoconch.
It is continuous that the mankind pursue technological progress, the 6th kind of scheme be not in the method for clutch and outer clutch with rotation.
General hay mower is widely used in by sometimes mowing from walking the mode sometimes certainly do not walked selected by the hobby of people.Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block movement vertically carry out clutch.The clutch block of the arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of prior art, is only carry out clutch by the circular cone of clutch block side, needs larger axial adhesion, cause the damage phenomenon that interior pressure ring washer ruptures frequently to occur; In engaging process, produce frictional heat between taper seat, need apply oil in gear-box; And between taper seat, have friction to have relative sliding, consumed power.In any case, the clutch in gear reduction clutch generates heat always, the clutch in gear reduction clutch can not wanted, and do be clutch put into the outside of gear-box? so not only reduce heating, and the cost of gear-box can be lowered; So the 6th kind of scheme is also called that the worm screw zigzag tooth roller box of lawn machine according to holder pivots clutch has just arisen at the historic moment.If with powder metallurgy umbrella tooth, gear ratio is little and be not durable; If without support, be particularly separated during clutch, sometimes cling and unreliable.Cling and refer to that belt and big belt pulley but wilfully have related phenomenon when needing to be separated sometimes.
In order to aspire after perfection, arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of the general hay mower of further improvement, the circular cone eradicated by clutch block side carrys out clutch, in engaging process, frictional heat is produced between taper seat, consumed power, the generation of the damage phenomenon causing interior pressure ring washer to rupture; Simultaneously in order to lower the cost of gear-box, the present invention is on the basis of repeatedly improving, there is provided a kind of no-load voltage ratio large, and the clutch do not wanted in gear reduction clutch, and turn drawing the gear-box that clutch is put into the outside of gear-box, be also called the worm screw zigzag tooth roller box of lawn machine according to holder pivots clutch.
The worm screw zigzag tooth roller box of lawn machine according to holder pivots clutch, by according to support (62), fuselage determines frame (63), bracing wire (68), extension spring (66), dynamic arm-tie (69), auxiliary drop panel (65), main rear axle (64), gear housing (61), belt pulley (67), case lid (70), multiple screw (79), large sealing gasket (73), be provided with the staggered gear (71) of (71f) groove, staggered worm screw (72), rear bearing block (74), ring washer (75), thick straight pin (76), thin straight pin (78), spring (77), formed, it is characterized in that: the described one end bolt according to support (62) is determined frame (63) with fuselage and is fixedly connected with, described fuselage is determined frame (63) and is connected firmly mutually by the rear wall of another nut with hay mower fuselage, and the described other end according to support (62) is provided with open slot (62f), described bracing wire (68) is inserted in the described open slot (62f) be provided with according to the other end of support (62) actively, and be connected with the closing in end of described extension spring (66), and the other end of described extension spring (66) i.e. hook end are connected with described dynamic arm-tie (69), described dynamic arm-tie (69) is by multiple screw (79) and gear housing (61), and case lid (70) and large sealing gasket (73) are fixedly connected, the described middle part according to support (62) is provided with macropore, and described main rear axle (64) is movingly through the described macropore according to support (62) middle part.
The described other end according to support (62) is provided with open slot (62f), and referring to Figure 32, the feature of its open slot be provided with (62f) is that the narrow groove of its opening has turnover, minimum 1, or multiple; The inside of narrow groove is connected with circular hole; So that the steel wire rope of described bracing wire (68) can be inserted in the narrow groove of turnover from the side and enter circular hole; The upper surface that the outer field end of bracing wire is then provided with open slot (62f) with the described other end according to support (62) contacts, but must not pass through; And only have the steel wire rope of described bracing wire (68) by it, and be connected with the closing in end of described extension spring (66), and be connected with described dynamic arm-tie (69) by the other end of described extension spring (66) i.e. hook end.
The feature that described fuselage determines frame (63) is, referring to Figure 33, have two angles to be greater than the flat board at right angle, first flat board is provided with screwed hole or nut, and on another flat board, is provided with slotted hole, in order to assembling and the adjustment of bolt.
The feature of described extension spring (66) is that its one end has the end that closes up, and the other end of described extension spring (66) is the hook end of opening.
Referring to Figure 34, the feature of described dynamic arm-tie (69) is, which is provided with auxiliary drop panel (65), also be provided with arc and position, multiple hole, in order to described dynamic arm-tie (69) by multiple screw (79) and gear housing (61), case lid (70) and large sealing gasket (73) are fixedly connected; And the auxiliary drop panel (65) that described dynamic arm-tie (69) is provided with is provided with position, hole, to be connected with the applicable position of fuselage by suitable spring and to play and auxiliary hold in the palm role, determine according to type, some type needs.
Referring to Figure 35, described main rear axle (64) is provided with the hole of hanging down mutually, to lay thick straight pin (76), and thin straight pin (78), and pocketed springs (77) between selling two; To be its two ends be the feature of described spring (77) and tight and polish.
Referring to Figure 28, the described staggered gear (71) being provided with (71f) groove, be enclosed within the thick straight pin (76) on the hole of hanging down mutually that is arranged on described main rear axle (64), thin straight pin (78), and the outside of the spring (77) be set with between two pins; And be meshed with described staggered worm screw (72); The feature of the described staggered gear (71) being provided with (71f) groove is that its (71f) groove has a groove at least, or multiple-grooved, such as two grooves, particularly two grooves hang down mutually, and be small one and large one, so that with described thick straight pin (76), thin straight pin (78), and two pin between suit spring (77) cooperatively interact.The benefit of such work does not still utilize original parts, the axial length shortening gear (71) (otherwise will lengthen one section in the outside of gear and beat installing hole, on face of gear, punching can affect engagement), and two the good teamwork of pin one spring be of value to the buffering engagement of gear and anti-kill, especially in the moment of clutch, moreover be also convenient to assembling, need not pin be pounded, be inserted in.
Referring to Figure 31, described gear housing (61) is provided with lays bearing position, in order to laying staggered worm screw (72); Described gear housing (61) is also provided with the seat (61f) laying main rear bearing housing (74), it is characterized in that the center at described seat (61f) is not to resemble common gear-box on die joint, but it is U-shaped, that is, its center is far deeper than die joint, after being enough to put into the rear bearing block (74) comprising the complete main rear diameter of axle, also can not exceed die joint, also just can be convenient to the large sealing gasket (73) of holding plane shape.Its usefulness is overcome over, and as shown in Figure 12 and Figure 14, axle center caused sealing gasket and gluing cannot set level on die joint had both been taken a lot of work difficult even drawback.
As further illustrated in figures 21-24, described belt pulley (67) is arranged on one end of staggered worm screw (72); And by belt drag by the small pulley of engine output end.
As shown in Figure 29 and Figure 35, one end lace wheel of described staggered worm screw (72); And staggered worm screw (72) is arranged in described gear housing (61) by bearing, and engage with described staggered gear (71); It is characterized in that: the end of the other end of described staggered worm screw (72) conically, to cheat adaptation with the cone of case lid (70) flexibly.
As shown in Figure 29 and Figure 35, one end lace wheel of described staggered worm screw (72).Its mode connected has 2 kinds; 1st kind is with pin; Described pin steel spring plate circle becomes, and broad in the middle and two is smaller; Staggered worm screw (72) is first installed to gear-box, then belt pulley is installed and squeezes into pin; 2nd kind of connected mode is with key and at axle head tapping.
As shown in Figure 29 and Figure 25, the feature of case lid (70) is: described case lid (70) is provided with the large plane of periphery, and in the large plane of periphery, be provided with multiple hole, to be connected with large sealing gasket (73) and gear housing (61) by multiple screw (79); And be provided with cone hole at the jut of case lid, so that adaptive with the conical, flexible ground of the end of the other end of staggered worm screw (72).
As shown in Figure 36 and Figure 14, the feature of described rear bearing block (74) is the external form having D shape, its endoporus is round, in order to putting main rear axle, and outside is D shape, to be connected with large sealing gasket (73) and gear housing (61), and to be no longer the rear bearing block of wholecircle as shown in figure 14.
As shown in figure 30, the feature of described large sealing gasket (73) has large plane and multiple hole, to connect with gear housing (61) and rear bearing block (74) and case lid (70).
Clutch in described not gear reduction clutch, and turn drawing the gear-box that clutch is put into the outside of gear-box, also be called that the lawn machine beneficial effect of the worm screw zigzag tooth roller box according to holder pivots clutch is, improve the arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of general hay mower further, the circular cone eradicated by clutch block side carrys out clutch, in engaging process, frictional heat is produced between taper seat, consumed power, the generation of the damage phenomenon causing interior pressure ring washer to rupture; Reduce the cost of gear-box simultaneously.But the support outside gear-box adds, and it also has cost, therefore totle drilling cost just slightly reduces, and the effect then reducing frictional heat without clutch in gear-box is affirmative.
Below in conjunction with drawings and Examples to the 6th kind of scheme be also invention be described further.
Figure 21 is the 6th kind of scheme is also the schematic perspective view of lawn machine with the worm screw zigzag tooth roller box according to holder pivots clutch;
Figure 22 is the 6th kind of scheme is also the schematic perspective view of lawn machine with another visual angle of the worm screw zigzag tooth roller box according to holder pivots clutch;
Figure 23 is the 6th kind of scheme is also the schematic perspective view of lawn machine with another visual angle of the worm screw zigzag tooth roller box according to holder pivots clutch;
Figure 24 is the 6th kind of scheme is also the schematic perspective view of lawn machine with another visual angle of the worm screw zigzag tooth roller box according to holder pivots clutch;
Figure 25 is the schematic perspective view of case lid (70);
Figure 26 is the 6th kind of scheme is also the schematic perspective view of lawn machine with the visual angle to the rear of the worm screw zigzag tooth roller box according to holder pivots clutch;
Figure 27 is the 6th kind of scheme is also the schematic perspective view that remove case lid of lawn machine with the visual angle to the rear of the worm screw zigzag tooth roller box according to holder pivots clutch;
Figure 28 is the schematic perspective view of the staggered gear (71) being provided with (71f) groove;
Figure 29 is the schematic perspective view of staggered worm screw (72);
Figure 30 is the schematic perspective view of large sealing gasket (73);
Figure 31 is the schematic perspective view of gear housing (61);
Figure 32 is the schematic perspective view according to support (62);
Figure 33 is the schematic perspective view that fuselage determines frame (63);
Figure 34 is the schematic perspective view of arm-tie (69);
Figure 35 is the 6th kind of scheme is also the schematic perspective view that remove case lid and large sealing gasket of lawn machine with the visual angle to the rear of the worm screw zigzag tooth roller box according to holder pivots clutch;
Figure 36 is the schematic perspective view of rear bearing block (74);
Figure 37 is the schematic perspective view of ring washer (75);
Figure 38 is the schematic perspective view of spring (77);
Figure 39 is the schematic perspective view of thick straight pin (76);
Figure 40 is the schematic perspective view of thin straight pin (78).
6th kind of scheme is also that lawn machine is as described below by the embodiment of the worm screw zigzag tooth roller box according to holder pivots clutch:
Operation pedestrian pulls from walking control crank, by steel wire rope and pull bar, makes bracing wire action and tightens up; Because described bracing wire 68 is inserted in the described open slot 62f be provided with according to the other end of support 62 actively, and is connected with the closing in end of described extension spring 66, and the other end of described extension spring 66 i.e. hook end are connected with described dynamic arm-tie 69; And described dynamic arm-tie 69 is by multiple screw 79 and gear housing 61, case lid 70 and large sealing gasket 73 are fixedly connected; The described middle part according to support 62 is provided with macropore, and described main rear axle 64 movingly through described according to the macropore in the middle part of support 62, the upper surface that the outer field end of bracing wire is then provided with open slot 62f with the described other end according to support 62 contacts, so form a force, it is motionless relative to the fuselage of hay mower; Need not be original be moved axially along main shaft 7 by internal conical surface promotion Engaging-and-disengaging bearing pad 5 and clutch block, thus the arrangement of clutch engaged in the rear wheel drive gear reduction clutch of traverse gear, but pull the other end of described extension spring 66 i.e. hook end and described dynamic arm-tie 69 by steel wire rope, thus whole gear-box is rotated according to back axis, move after making belt pulley simultaneously and make belt tension, and making the power transmission of the small pulley of the output shaft of engine come and certainly walk.When operation pedestrian unclamps from walking control crank, by steel wire rope without pulling force, then make it to reset, belt is unclamped, and not from walking; That is, the worm screw zigzag tooth roller box of lawn machine according to holder pivots clutch, by the rotation according to support 62 and gear-box, make belt tension, and essence controls certainly walking of hay mower jointly.
Because the worm screw zigzag tooth roller box of lawn machine according to holder pivots clutch, by according to support 62, fuselage determines frame 63, bracing wire 68, extension spring 66, dynamic arm-tie 69, auxiliary drop panel 65, main rear axle 64, gear housing 61, belt pulley 67, case lid 70, multiple screw 79, large sealing gasket 73, be provided with the staggered gear 71 of 71f groove, staggered worm screw 72, rear bearing block 74, ring washer 75, thick straight pin 76, thin straight pin 78, spring 77, formed, again because it is characterized in that: the described one end bolt according to support 62 is determined frame 63 with fuselage and is fixedly connected with, described fuselage is determined frame 63 and is connected firmly mutually by the rear wall of another nut with hay mower fuselage, so just there has been fixed pivot.Again because the described other end according to support 62 is provided with open slot 62f; Described bracing wire 68 is inserted in the described open slot 62f be provided with according to the other end of support 62 actively, and is connected with the closing in end of described extension spring 66, and the other end of described extension spring 66 i.e. hook end are connected with described dynamic arm-tie 69; Described dynamic arm-tie (69) is by multiple screw 79 and gear housing 61, and case lid 70 and large sealing gasket 73 are fixedly connected; The described middle part according to support (62) is provided with macropore, and described main rear axle 64 movingly through described according to the macropore in the middle part of support 62, draw a little so to have made bracing wire have dynamic.Again because the described other end according to support 62 is provided with open slot 62f, referring to Figure 32, the feature of the open slot 62f that it is provided with is that the narrow groove of its opening has turnover, minimum 1, or multiple; The inside of narrow groove is connected with circular hole; So the steel wire rope being not only convenient to described bracing wire 68 can be inserted in the narrow groove of turnover from the side and enter circular hole, even and if in the mowing process of jolting, also make bracing wire 68 not easily slippage; Again because the outer field end of bracing wire contacts with the upper surface that the described other end according to support 62 is provided with open slot 62f, but do not pass through, just had the fixing force of bracing wire crust; Again because the steel wire rope of described bracing wire 68 is by it, and be connected with the closing in end of described extension spring 66, and by the other end of described extension spring 66, namely hook end is connected with described dynamic arm-tie 69, so have adjusted the harmony of pulling force, if do not have extension spring, operating handle is very poor.
Because the feature that described fuselage determines frame 63 is, referring to Figure 33, have two angles to be greater than the flat board at right angle, its main cause is the rear machine plate of mower is oblique; First flat board is provided with screwed hole or nut, and on another flat board, is provided with slotted hole, so the assembling of favourable bolt and adjustment.
The feature of described extension spring 66 is that its one end has the end that closes up, and putting bracing wire is that sidespin is entered; And the other end of described extension spring 66 is hook ends of opening, can first hook in the hole of precession arm-tie 69.Because referring to Figure 34, the feature of described dynamic arm-tie 69 which is provided with auxiliary drop panel 65, is also provided with arc and position, multiple hole, so favourable described dynamic arm-tie (69) is by multiple screw 79 and gear housing 61, being fixedly connected with of case lid 70 and greatly sealing gasket 73; Again because the auxiliary drop panel 65 that is provided with of described dynamic arm-tie 69 is provided with position, hole, institute, so that be connected with the applicable position of fuselage by suitable spring and play to assist and hold in the palm role, is determined according to type, some type needs.
Because referring to Figure 35, described main rear axle 64 is provided with the hole of hanging down mutually, to lay thick straight pin 76, and thin straight pin 78, and pocketed springs 77 between selling two; And the feature of described spring 77 is its two ends is and tight and polish that institute is so that install and do not drop.Again because referring to Figure 28, the described staggered gear 71 being provided with 71f groove, is enclosed within the thick straight pin 76 on the hole of hanging down mutually that is arranged on described main rear axle 64, thin straight pin 78, and between two pins the outside of the spring 77 of suit; And be meshed with described staggered worm screw 72; The feature of the described staggered gear 71 being provided with 71f groove is that its 71f groove has a groove at least, or multiple-grooved, such as two grooves, particularly two grooves hang down mutually, and be small one and large one so that with described thick straight pin 76, thin straight pin 78, and the spring 77 of suit cooperatively interacts between two pins.Therefore so the benefit done so does not still utilize original parts, the axial length shortening gear 71 (otherwise will lengthen one section in the outside of gear and beat installing hole, on face of gear, punching can affect engagement), and two the good teamwork of pin one spring be of value to the buffering engagement of gear and anti-kill, especially in the moment of clutch, moreover be also convenient to assembling, need not pin be pounded, be inserted in.
Because referring to Figure 31, described gear housing 61 is provided with lays bearing position, in order to laying staggered worm screw 72; Described gear housing 61 is also provided with the seat 61f laying main rear bearing housing 74, it is characterized in that the center of described seat 61f is not to resemble common gear-box on die joint, but it is U-shaped, that is, its center is far deeper than die joint, after being enough to put into the rear bearing block 74 comprising the complete main rear diameter of axle, also can not exceeding die joint, also just can be convenient to the large sealing gasket 73 of holding plane shape.So its usefulness is not only overcome over, as shown in Figure 12 and Figure 14, axle center caused sealing gasket and gluing cannot set level on die joint had both been taken a lot of work difficult even drawback, and eliminated thin oil, and was coated with viscous crude on gear.When its basic reason is with interior clutch, as long as engine opens, without wheel from walking or certainly not walking, be that belt just turns all, worm screw and gear just turn, and heating is many certainly, and lubricating requirement is just high.And change outer clutch into from interior clutch, namely with the worm screw zigzag tooth roller box according to holder pivots clutch, it is not or not time walking, even if engine opens, belt does not just turn, and worm screw and gear just do not turn, certain heating is few, lubricating requirement is just not high, and this is the large advantage changing outer clutch from interior clutch into, and aforesaid 5th scheme hydraulic fluid port all can save some type.
Because as further illustrated in figures 21-24, described belt pulley 67 is arranged on one end of staggered worm screw 72; And by belt drag by the small pulley of engine output end, so when belt does not work, be by belt housing and described entrusting according to support 62.Again because as shown in Figure 29 and Figure 35, one end lace wheel of described staggered worm screw 72, and staggered worm screw 72 is arranged in described gear housing 61 by bearing, and engage with described staggered gear 71; It is characterized in that: the end of the other end of described staggered worm screw 72 conically, to cheat adaptation with the cone of case lid 70 flexibly; Again because as shown in Figure 29 and Figure 25, the feature of case lid 70 is: described case lid 70 is provided with the large plane of periphery, and is provided with multiple hole in the large plane of periphery, so be not only convenient to be connected with large sealing gasket 73 and gear housing 61 by multiple screw 79; And be provided with cone hole at the jut of case lid, be also convenient to the conical, flexible ground of the end of the other end of staggered worm screw 72 adaptive, save a bearing.
Because as shown in Figure 36 and Figure 14, the feature of described rear bearing block 74 is the external forms having D shape, its endoporus is round, so be conducive to putting main rear axle, and outside is D shape, institute so that be connected with large sealing gasket 73 and gear housing 61, and is no longer the rear bearing block of wholecircle as shown in figure 14 and difficulty sets level sealing gasket; As shown in figure 30, the feature of described large sealing gasket 73 has large plane and multiple hole, flat, and institute is so that connect with gear housing 61 and rear bearing block 74 and case lid 70.
But the perfection that the mankind pursue invention is endless, and things is also divided into two both advantageous and disadvantageous often.Described kinds of schemes is each has something to recommend him, can select by the requirement of the different type of each money and client.Although the 6th kind of scheme is also called the worm screw zigzag tooth roller box of lawn machine according to holder pivots clutch, there is its clutch not in gear reduction clutch, reduce the advantage of heating, but according to the scheme of holder pivots clutch, handy at some type, but on some type, then dislike volume excessive.So the 7th kind of scheme is also called that the powder metallurgy bevel gear gearbox of lawn machine inner conical drogue clutch is just necessary.If there is a kind of suggestion to think with powder metallurgy umbrella tooth, gear ratio is little and be not durable, but still has way to solve, as by the method reducing the little number of teeth and appropriate heat treatment.Though there is several scheme available on several type, severally to have shaped and a large amount of mower of going into operation to certain, but can not install, its reason is the Pulley shaft of decelerator and the distance of main rear axle is 24mm in the projection of horizontal plane; And with straight powder metallurgy umbrella tooth, then its projection taps into zero.If with straight powder metallurgy bevel gear gearbox, just need to change large casing, or mobile rear axle distance, or the position that can get out of the way gear-box is made on the rear wall of large casing, but that is all cumbersome.In order to the Pulley shaft of constant decelerator and the projector distance at horizontal plane of main rear axle, also in order to optimize meshing parameter and the geometrical factor of secondary gear spiral bevel gear further, the 8th kind of scheme is also called that the Ao Likang cycloid tooth hypoid gear reduction box of lawn machine inner conical drogue clutch has just arisen at the historic moment.
Because the present invention improves in the first seven scheme of planting, Gu conveniently, first state the 7th kind and put off until some time later the 8th kind of scheme.
In order to aspire after perfection, arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of the general hay mower of further improvement, the circular cone reduced by clutch block side carrys out clutch, in engaging process, frictional heat is produced between taper seat, consumed power, the generation of the damage phenomenon causing interior pressure ring washer to rupture; Simultaneously in order to lower the cost of gear-box, the present invention is on the basis of repeatedly improving, there is provided a kind of no-load voltage ratio large, and the method that cost is low compared with worm screw staggered gear, utilize powder machine die mould instead of mach method, in bevel gear, establish arrangement of clutch, be also called the powder metallurgy bevel gear gearbox of lawn machine inner conical drogue clutch.
7th kind of scheme is also invention, and its technical scheme taked is:
The lawn machine powder metallurgy bevel gear gearbox of inner conical drogue clutch, arrangement of clutch in the gears to engage and disengage decelerator of i.e. self-moving lawn mower rear wheel drive and bevel gear match, referring to Figure 41 to Figure 48, utilize original gear-box and multiple part, main change be change former worm screw interlock helical gear be band clutch cone bevel gear and cone pinion, and changed the case lid that cogs, and bracing wire torque arm; That is, the powder metallurgy bevel gear gearbox of described lawn machine inner conical drogue clutch, primarily of the bevel gear (82) of band clutch cone, cone pinion (81), cog case lid (83), and bracing wire torque arm (84) formed, it is characterized in that: the inside of the bevel gear (82) of described band clutch cone is provided with mesopore and the taper cut out, so that its mesopore penetrates the rear main shaft of hay mower, be also convenient to its taper cut out and clutch block adaptation simultaneously; The outside of the bevel gear (82) of described band clutch cone is provided with bevel gear; Described cone pinion (81) engages with bevel gear (82), axle head and the belt pulley of cone pinion (81) are connected, and the axle of cone pinion (81) is arranged on the described case lid that cogs (83) by bearing; The side of installation position is held in the bearing installation position of the described case lid that cogs (83) at primitive axis, be externally the boss slightly in 8-shaped, is the concave station slightly in 8-shaped viewed from inside; And bracing wire torque arm (84) is contained in the outside of the described case lid that cogs (83), to make bracing wire torque arm (84) rotate by bracing wire and to drive clutch cone and clutch.Slotted hole is provided with, to match with bent axle or shift fork in the plate of described bracing wire torque arm (84); The upper end minor axis of shift fork is also provided with double flute and screw thread to lay torque arm and to be handled by bracing wire; Rotate freely at certain angle again in the hope of making the existing desired power of dialling of shift fork.Upper shift fork head as described in third program is symmetrical and protrusion with setting aside jaw, dial point by original one and be improved to two groups of balanced points, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of gears to engage and disengage decelerator can be continued; Because the taper that the inside of the bevel gear (82) of described band clutch cone is provided with mesopore and cuts out, be beneficial to the rear main shaft that its mesopore can penetrate hay mower, be also convenient to its taper cut out and clutch block adaptation simultaneously; Its taper cut out or be provided with taper, or be provided with the dress inwall of clutch block and multiple kick, the wave mode face that the skew back taper seat of the gear internal be namely equipped with associated clutch block and sinusoidal waveform match or other can with the face of the waves clutch block clutch such as protruding envelope of multiple spot etc.The plate end of described bracing wire torque arm (84) is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm (84) the aperture hanging little returning pull-spring.The feature of the bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with which is provided with open slot, particularly described open slot is many foldings, and namely open slot is many foldings, a minimum folding, or multiplely to turn round, the steel wire rope side in order to bracing wire is linked into and not easily breaks off relations.
The bevel gear (82) that described band clutch is bored removed the taper that its inside is provided with mesopore and cuts out, to penetrate the rear main shaft of hay mower, on rear main shaft, be provided with the hole of hanging down mutually simultaneously, to lay thick straight pin (76), thin straight pin (78), and spring (77); Also its taper cut out and clutch block adaptation is convenient to; The outside of the bevel gear (82) of described band clutch cone is provided with bevel gear; In order to increase gear ratio, suitably decrease the number of teeth of cone pinion; The number of teeth of described cone pinion (81) is within 13 teeth, or 3-9 tooth, preferably 6 teeth.Although cut if root can occur the machined so few number of teeth, but be without gear hobbing now, gear shaping, mill teeth, the direct machining gears part of the mach method such as gear-shaping, but first make interior swaging die by CNC or mould work, again powder is put into pressing formation on press, sinter again, namely the method for powder metallurgy manufactures the bevel gear (82) of cone pinion (81) and band clutch cone, prevent the mach steel part of the strength ratio of powder metallurgical gear to decline to some extent, but be used on the not high mower of requirement now; The speed of travel of hay mower is at one meter per second, and namely only 3.6 kilometers per hour, walking power consumption is lower than one kilowatt; Through actual measurement, powder metallurgical gear has met the walk test requirement of 120 hours of hay mower.Usual hay mower, just cuts the grass on a lawn several times every year, cuts the grass on a lawn just several hours at every turn, therefore available several years.And changed new for old for a long time by consumption habit after several years.Described cone pinion (81) engages with bevel gear (82), and be called secondary transmission, older models no-load voltage ratio is 3.5, and new architecture no-load voltage ratio is 5, is enough to available.And the axle head of cone pinion (81) and belt pulley are connected, the small belt pulley of belt pulley and engine output shaft is connected, and is called primary transmission, and general no-load voltage ratio is no more than 2; And the walking gear of the band mono-directional overrun clutch at main rear axle two ends and the transmission of trailing wheel internal gear, be called three grades of transmissions.
In order to the Pulley shaft of constant decelerator and the projector distance at horizontal plane of main rear axle, also in order to optimize meshing parameter and the geometrical factor of secondary gear spiral bevel gear further, the 8th kind of scheme is also called that the Ao Likang cycloid tooth hypoid gear reduction box of lawn machine inner conical drogue clutch has just arisen at the historic moment.
The invention has the beneficial effects as follows: the design utilizes existing speed-reducing clutch shell and most of part, only change clutch gear and the minority part such as phase accessory with it, by bevel gear scheme just handy powder metallurgy pressing method, if with worm screw staggered gear, not handy pressing, root is prevented to cut, cost declines to some extent, particularly meets the installation requirement of former mowing casing, also improves transmission meshing parameter and geometrical factor.
Below in conjunction with drawings and Examples to the 7th kind of scheme be also invention be described further.
Figure 41 is the schematic perspective view of the powder metallurgy bevel gear gearbox of the 7th kind of scheme and the clutch of lawn machine inner conical drogue;
Figure 42 is the inside schematic perspective view of the powder metallurgy bevel gear gearbox of the 7th kind of scheme and the clutch of lawn machine inner conical drogue;
Figure 43 is the schematic diagram of the bevel gear (82) of the band clutch cone of the 7th kind of scheme;
Figure 44 is the schematic diagram of the cone pinion (81) of the 7th kind of scheme;
Figure 45 be the 7th kind of scheme band clutch cone bevel gear (82) rear to schematic perspective view;
Figure 46 is the cross-sectional schematic of the bevel gear (82) of the band clutch cone of the 7th kind of scheme;
Figure 47 is the schematic perspective view of the case lid that cogs (83) of the powder metallurgy bevel gear gearbox of the 7th kind of scheme and the clutch of lawn machine inner conical drogue;
Figure 48 is the schematic perspective view of the bracing wire torque arm (84) of the powder metallurgy bevel gear gearbox of the 7th kind of scheme and the clutch of lawn machine inner conical drogue;
Figure 49 is the schematic perspective view removing the case lid that cogs of the Ao Likang cycloid tooth hypoid gear reduction box of the 8th kind of scheme and the clutch of lawn machine inner conical drogue;
Figure 50 is the schematic perspective view removing the case lid that cogs of the Ao Likang cycloid tooth hypoid gear reduction box of the 8th kind of scheme and the clutch of lawn machine inner conical drogue;
As shown in Figure 41 to Figure 50,
In figure: 81. is cone pinion (81);
82. is bevel gears (82) that band clutch is bored;
83. is case lids that cog (83) of powder metallurgy bevel gear gearbox;
84. is bracing wire torque arm (84);
85. is little Ao Likang bevel gears (85);
86. is the case lids that cog (86) of Ao Likang cycloid tooth hypoid gear reduction box with inner conical drogue clutch;
87. is the large Ao Likang bevel gears (87) with inner conical drogue clutch;
Operation pedestrian pulls from walking control crank, described bracing wire torque arm 84 is pulled by steel wire rope, clutch block movement is vertically engaged, namely the bevel gear 82 of band clutch cone is allowed to engage with rear main shaft, power is by belt primary transmission, described cone pinion 81 is rotated, and cone pinion 81 be arranged on described powder metallurgy bevel gear gearbox by bearing cog on case lid 83, thus drive the bevel gear 82 of band clutch cone to make secondary transmission, then make hay mower from walking by three grades of transmissions.
The clutch gear of the arrangement of clutch in the rear wheel drive gear reduction clutch of the traverse gear of clutch, circular cone not only by clutch gear medial surface engages, or as improvement, with there being the i.e. waveform of distortion, particularly sinusoidal wave inwall and multiple little micro-protuberance carry out assist in engagement.When operation pedestrian unclamps from walking control crank, by steel wire rope and driving lever elastic reset, make clutch block movement vertically to leave clutch gear.Because inwall is that round and smooth sinusoidal waveform more easily leaves than dental inlay clutch block.
Because the lawn machine powder metallurgy bevel gear gearbox of inner conical drogue clutch, arrangement of clutch in the gears to engage and disengage decelerator of i.e. self-moving lawn mower rear wheel drive and bevel gear match, utilize original gear-box and multiple part, main change be change former worm screw interlock helical gear be band clutch cone bevel gear and cone pinion, and changed the case lid that cogs, and bracing wire torque arm; That is, the powder metallurgy bevel gear gearbox of described lawn machine inner conical drogue clutch, primarily of the bevel gear 82 of band clutch cone, cone pinion 81, cog case lid 83, and bracing wire torque arm 84 formed, again because the inside of the bevel gear 82 of described band clutch cone is provided with mesopore and the taper cut out, this taper or a circular cone, or the circular cone of two different angles, or waveform, such as sine-shaped, in order to regulate and control clutch degree, select according to different types.The rear main shaft that gear mesopore penetrates hay mower should be convenient to, also be convenient to its taper cut out and clutch block adaptation simultaneously.Again because the outside of the bevel gear 82 of described band clutch cone is provided with bevel gear; Described cone pinion 81 engages with bevel gear 82, and axle head and the belt pulley of cone pinion 81 are connected, and the axle of cone pinion 81 is arranged on by bearing and described cogs on case lid 83; The side of installation position is held in the bearing installation position of the described case lid 83 that cogs at primitive axis, be externally the boss slightly in 8-shaped, is the concave station slightly in 8-shaped viewed from inside, buried bearing; And bracing wire torque arm 84 is contained in the outside of the described case lid 83 that cogs, to make bracing wire torque arm 84 rotate by bracing wire and to drive clutch cone and clutch.Because be provided with slotted hole in the plate of described bracing wire torque arm 84, therefore be convenient to match with bent axle or shift fork; The upper end minor axis of shift fork is also provided with double flute and screw thread to lay torque arm and to be handled by bracing wire; Rotate freely at certain angle again in the hope of making the existing desired power of dialling of shift fork.Upper shift fork head as described in third program is symmetrical and protrusion with setting aside jaw, dial point by original one and be improved to two groups of balanced points, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of gears to engage and disengage decelerator can be continued; Again because the inside of the bevel gear 82 of described band clutch cone is provided with mesopore and the taper cut out, therefore be beneficial to the rear main shaft that its mesopore can penetrate hay mower, be also convenient to its taper cut out and clutch block or waveform block adaptive simultaneously.Again because the outside of the bevel gear 82 of described band clutch cone is provided with bevel gear; Described cone pinion 81 engages with bevel gear 82, and axle head and the belt pulley of cone pinion 81 are connected, and the axle of cone pinion 81 is arranged on by bearing and described cogs on case lid 83; The side of installation position is held in the bearing installation position of the described case lid 83 that cogs at primitive axis, be externally the boss slightly in 8-shaped, is the concave station slightly in 8-shaped viewed from inside, buried bearing; And bracing wire torque arm 84 is contained in the outside of the described case lid 83 that cogs, to make bracing wire torque arm 84 rotate by bracing wire and to drive clutch cone and clutch.Because be provided with slotted hole in the plate of described bracing wire torque arm 84, therefore be convenient to match with bent axle or shift fork; The upper end minor axis of shift fork is also provided with double flute and screw thread to lay torque arm and to be handled by bracing wire; Rotate freely at certain angle again in the hope of making the existing desired power of dialling of shift fork.Upper shift fork head as described in third program is symmetrical and protrusion with setting aside jaw, dial point by original one and be improved to two groups of balanced points, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of gears to engage and disengage decelerator can be continued; Again because the taper that is provided with mesopore and cuts out of the inside of the bevel gear 82 of described band clutch cone, be beneficial to its mesopore and can penetrate the rear main shaft of hay mower and straight pin and spring, be also convenient to its taper cut out and clutch block adaptation simultaneously; Its taper cut out or be provided with taper, or be provided with the dress inwall of clutch block and multiple kick, the wave mode face that the skew back taper seat of the gear internal be namely equipped with associated clutch block and sinusoidal waveform match or other can with the face of the waves clutch block clutch such as protruding envelope of multiple spot etc.The plate end of described bracing wire torque arm 84 is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm 84 aperture hanging little returning pull-spring.The feature of the bracing wire side plate that the plate end of described bracing wire torque arm 84 is provided with which is provided with open slot, particularly described open slot is many foldings, namely open slot is many foldings, a minimum folding, or multiplely to turn round, therefore the steel wire rope side being beneficial to bracing wire is linked into and not easily breaks off relations, can only be linked into side because the end of the steel wire rope of bracing wire has large envelope block.
Because the bevel gear 82 of described band clutch cone removed the taper that its inside is provided with mesopore and cuts out, so that penetrate the rear main shaft of hay mower; Again owing to being provided with the hole of hanging down mutually on rear main shaft simultaneously, therefore thick straight pin 76 can be laid, thin straight pin 78, and spring 77; Also its taper cut out and clutch block adaptation is convenient to; The outside of the bevel gear 82 of described band clutch cone is provided with bevel gear; In order to increase gear ratio, suitably decrease the number of teeth of cone pinion; The number of teeth of described cone pinion 81 is within 13 teeth, or 3-9 tooth, preferably 6 teeth, and gear wheel is 30 teeth.Although, cut if root can occur the machined so few number of teeth, but be without gear hobbing now, gear shaping, mill teeth, the direct machining gears part of the mach method such as gear-shaping, but first make interior swaging die by CNC or mould work, then powder is put into pressing formation on press, then sinter, namely the method for powder metallurgy manufactures the bevel gear 82 of cone pinion 81 and band clutch cone, prevents root to cut.More than machined by class's output of powder metallurgy process, cost declines to some extent.The mach steel part of strength ratio of powder metallurgical gear declines to some extent, but is be used on the not high mower of requirement now; The speed of travel of hay mower is at one meter per second, and namely only 3.6 kilometers per hour, walking power consumption is lower than one kilowatt; Through actual measurement, powder metallurgical gear has met the walk test requirement of 120 hours of hay mower; Test is by different type of machines such as 16 ", 18 ", 20 " and, 22 " and have any different.But severally to have shaped and a large amount of mower of going into operation to certain, some schemes but can not be installed, and its reason is the Pulley shaft of decelerator and the distance of main rear axle is certain in the projection of horizontal plane; And with straight powder metallurgy umbrella tooth, then its projection is close to zero.If with straight powder metallurgy bevel gear gearbox, just need to change large casing, or mobile rear axle distance, or the position that can get out of the way gear-box is made on the rear wall of large casing, but that is all cumbersome, now scheme is all right has installed, because decelerator upper casing 86 directly can fill with the 8th kind.Again because of with Ao Likang pinion 85 and gear wheel 87, therefore optimize meshing parameter and the geometrical factor of secondary gear spiral bevel gear further.But the improvement and bring new ideas of lawn machine gear-box is endless.
Summary of the invention
Have the straight ripple of equal pressure logarithmic curve arc wave retrofit the great undertaking of clutch slider of injection moulding lawn machine gear-box be entirety be provided with in the middle flange (105) and in its back-end portion be provided with rear driver plate (1a7), cause is that the bad Side of warm extrusion powder metallurgy takes out, the flange (105) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate (1a7) that portion is provided with in its back-end are equipped with the staggered opening of multiple complementation, so both conveniently stripped, stride across the difficulty that warm extrusion powder metallurgy can not make double-deck flange and driver plate, facilitate again double-deck flange and driver plate therebetween plug-in mounting enter shift fork, make left and right all capable namely from close the power of shift fork of can obtaining, fundamentally solve clutch not slip up.3-18 of being provided with along end circumference in the end of clutch slider and clutch block has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each clutch cone is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), that is be one section of logatithmic spiral at the contour curve of the dominant shape state of clutch slider and clutch block, so that when having the straight ripple clutch of logarithmic curve arc wave closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable, achieve beyond thought effect, its usefulness is self-evident.
There is equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, described gear-box is lawn machine gear-box, its output main shaft of described gear-box is exactly the main rear axle from walking lawn machine, axle head and the big belt pulley of the pinion of described gear-box are connected, the small belt pulley of described big belt pulley and power machine output shaft is connected, and is called primary transmission, described pinion engages with gear wheel, is called secondary transmission, the walking gear of band mono-directional overrun clutch at described main rear axle two ends and the transmission of trailing wheel internal gear, be called three grades of transmissions, described gear wheel is coaxial and can be sleeved on described main rear axle rotationally with described main rear axle, clutch block is provided with in described gear wheel, described main rear axle is also set with clutch slider, described clutch slider is provided with clutch structure, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, described pin is placed in the axes normal with described main rear axle in the radial hole on described main rear axle, one end of described clutch structure is provided with clutch motion block, so that operator pull and unclamp lawn machine drive bracing wire from walking handle time, in the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, cog the clutch slider that the clutch block and described main rear axle that are provided with in the combination of case lid and described gear wheel are set with acting in conjunction under to be implemented by the driving between described gear wheel and described main rear axle and idle running from walk lawn machine certainly walking and from not walking, the axle of described pinion is arranged on the described case lid that cogs (83) by bearing, the bearing installation position of the described case lid that cogs (83) is on the side of the bearing installation position of lawn machine gear-box, movable bracing wire torque arm (84) is housed in the outside of the described case lid that cogs, the plate end of described bracing wire torque arm (84) is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm (84) the aperture hanging little returning pull-spring, the bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with is provided with open slot, many foldings, the steel wire rope side being beneficial to bracing wire is linked into and not easily breaks off relations, and is convenient to by bracing wire, bracing wire torque arm (84) rotated and drive arrangement of clutch clutch, slotted hole is provided with, to match with shift fork in the plate of described bracing wire torque arm (84), the upper end minor axis of described shift fork is also provided with double flute and screw thread to lay torque arm and to be handled by bracing wire, the upper shift fork head of described shift fork is symmetrical and protrusion with setting aside jaw, and this shift fork comprises two groups of balanced points, the inside of the described large bevel gear containing inner conical drogue clutch is provided with mesopore and the taper hollowed out, so that mesopore penetrates the rear main shaft of hay mower, be convenient to the taper that cuts out and clutch block or waveform block adaptive, be also convenient to the inwall that its taper hollowed out is provided with dress clutch block simultaneously, its taper hollowed out or be provided with taper, or be provided with the inwall of dress clutch block and multiple kick, rear main shaft is provided with the hole of hanging down mutually, therefore thick straight pin (76) can be laid, thin straight pin (78), and described stage clip is exactly spring (77), the pinion of described gear-box, for increasing gear ratio, suitably decreases the number of teeth of cone pinion, the number of teeth of described cone pinion is within 11 tooth, and large bevel gear is 28 teeth, first make interior swaging die by CNC or mould work, then powder is put into pressing formation on press, then sinter, namely the method for powder metallurgy manufactures cone pinion and the large bevel gear containing inner conical drogue clutch, prevents root to cut, the decelerator upper casing (86) of the described case lid that cogs directly can fill, described cone pinion Ao Likang pinion, described large bevel gear Ao Likang gear wheel, optimizes meshing parameter and the geometrical factor of secondary gear spiral bevel gear, to form cycloid tooth hypoid gear, by steel wire rope and pull bar, described lawn machine gear-box is made to rotate certain angle also known as the minor axis (9c) of the upper and lower side of the lower house (8c) of the gear reduction clutch housing containing multiple part, and pass through arched arm (3c) interlock upper shift fork head (1c) and set aside jaw (2c), promote slip pulling sleeve (4c) and promote Engaging-and-disengaging bearing pad (5c) and clutch block moves vertically, thus the clutch gear engaging the arrangement of clutch in the rear wheel drive gear reduction clutch of traverse gear carries out oneself walks, described arrangement of clutch contains hay mower gears to engage and disengage decelerator single side pushing sliding sleeve, by sliding sleeve (41d), and single group of limit (42d), inner cone flange (43d) formed, the sliding sleeve (41d) of described single side pushing sliding sleeve is provided with single group of limit (42d), dial on limit (42d) at the list of described single side pushing sliding sleeve and be provided with inner cone flange (43d), and the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is provided with discoid list dials limit (42d), the medial surface of inner cone flange (43d) is taper seat, and itself and axial angle are not more than 30 degree, because described single side pushing sliding sleeve (4d) is set with and slides on main shaft, the axis (7d) of therefore described single side pushing sliding sleeve (4d) coincides with the main shaft (7d) of the arrangement of clutch in hay mower gears to engage and disengage decelerator, i.e. self-moving lawn mower rear wheel drive main shaft, the outside of the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is movably installed with shift fork, shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, namely the inner cone flange (43d) dialling limit (42d) by described list contacts thrust bearing shim, thus makes arrangement of clutch work, it is in the form of annular discs that limit (42d) dialled by the list of described single side pushing sliding sleeve (4d), the back side that the disk on limit (42d) dialled by described list all can contact thrust bearing shim with described inner cone flange (43d), the upper end minor axis of shift fork is also provided with double flute and screw thread to lay pull bar and to be handled by bracing wire, thus the existing desired power of dialling of shift fork is rotated freely at certain angle again, hay mower gear-box hydraulic fluid port, the i.e. hydraulic fluid port of the side placement of gear reduction unit, by be located at rear wheel drive gear reduction clutch lower house side side platform (4e), be located at decelerator side screwed hole (2e) and be located at the below of screwed hole and the breach (3e) of the bottom surface in housing formed, the axis of described screwed hole (2e) is not orthogonal to bottom surface, conveniently the demoulding is namely without side core-pulling, and the side platform (4e) putting spiral shell mosquito hole is that arc component large with top is directly connected instead of there is indentation centre, described screwed hole for being screwed into hydraulic fluid port screw, therefore makes the external diameter of threaded line press close to end inner face as far as possible, so that few retained oil during draining, described be located at the below of screwed hole and the breach (3e) of the bottom surface in housing is rectangle, for preventing screw from not touching and arranging, lawn machine gear-box, by according to support (62), fuselage determines frame (63), bracing wire (68), extension spring (66), dynamic arm-tie (69), auxiliary drop panel (65), main rear axle (64), gear housing (61), belt pulley (67), case lid (70), multiple screw (79), large sealing gasket (73), be provided with the staggered gear (71) of groove (71f), staggered worm screw (72), rear bearing block (74), ring washer (75), thick straight pin (76), thin straight pin (78), spring (77), formed, the described one end bolt according to support (62) is determined frame (63) with fuselage and is fixedly connected with, described fuselage is determined frame (63) and is connected firmly mutually by the rear wall of another nut with hay mower fuselage, and the described other end according to support (62) is provided with open slot (62f), described bracing wire (68) is inserted in the described open slot (62f) be provided with according to the other end of support (62) actively, and be connected with the closing in end of described extension spring (66), and the other end of described extension spring (66) i.e. hook end are connected with described dynamic arm-tie (69), described dynamic arm-tie (69) is by multiple screw (79) and gear housing (61), and case lid (70) and large sealing gasket (73) are fixedly connected, the described middle part according to support (62) is provided with macropore, and described main rear axle (64) is movingly through the described macropore according to support (62) middle part, the described other end according to support (62) is provided with open slot (62f), and the narrow groove of its open slot be provided with (62f) its opening has a turnover at least, the inside of narrow groove is connected with circular hole, so that the steel wire rope of described bracing wire (68) can be inserted in the narrow groove of turnover from the side and enter circular hole, the upper surface that the outer field end of bracing wire is then provided with open slot (62f) with the described other end according to support (62) contacts, but must not pass through, only have the steel wire rope of described bracing wire (68) by, and be connected with the closing in end of described extension spring (66), and be connected with described dynamic arm-tie (69) by the other end of described extension spring (66) i.e. hook end, described fuselage determines frame (63) has two angles to be greater than the flat board at right angle, and first flat board is provided with screwed hole or nut, and on another flat board, is provided with slotted hole, in order to assembling and the adjustment of bolt, there is the end that closes up described extension spring (66) its one end, and the other end of described extension spring (66) is the hook end of opening, described dynamic arm-tie (69) which is provided with auxiliary drop panel (65), also be provided with arc and position, multiple hole, be fixedly connected by multiple screw (79) and gear housing (61), case lid (70) and large sealing gasket (73) in order to dynamic arm-tie (69), and the auxiliary drop panel (65) that described dynamic arm-tie (69) is provided with, which is provided with position, hole, to be connected with the applicable position of fuselage by suitable spring and to play and auxiliary hold in the palm role, determine according to type, described main rear axle (64) is provided with the hole of hanging down mutually, to lay thick straight pin (76), and thin straight pin (78), and pocketed springs (77) between selling two, described spring (77) is also known as stage clip, and its two ends are and tight and polish, the described staggered gear (71) being provided with groove (71f), be enclosed within the thick straight pin (76) on the hole of hanging down mutually that is arranged on described main rear axle (64), thin straight pin (78), and the outside of the spring (77) be set with between two pins, and be meshed with described staggered worm screw (72), described staggered gear (71) its groove (71f) being provided with groove (71f) has a groove at least, described gear housing (61) is provided with lays bearing position, in order to laying staggered worm screw (72) also known as pinion, described gear housing (61) is also provided with the seat (61f) laying main rear bearing housing (74), the gear-box at the center at described seat (61f) is U-shaped, its center is far deeper than die joint, after being enough to put into the rear bearing block (74) comprising the complete main rear diameter of axle, can not die joint be exceeded, be convenient to the large sealing gasket (73) of holding plane shape, described belt pulley (67) is arranged on one end of staggered worm screw (72), and by belt by engine containing engine output end small pulley drag, one end lace wheel of described staggered worm screw (72), and staggered worm screw (72) is arranged in described gear housing (61) by bearing, and engage with described staggered gear (71), the end of the other end of described staggered worm screw (72) conically, to cheat adaptation with the cone of case lid (70) flexibly, one end lace wheel of described staggered worm screw and pinion (72), its mode connected has 2 kinds, 1st kind is with pin, described pin steel spring plate circle becomes, and broad in the middle and two is smaller, staggered worm screw (72) is first installed to gear-box, then belt pulley is installed and squeezes into pin, 2nd kind of connected mode is with key and at axle head tapping, the case lid (70) of the casing of lawn machine gear-box is provided with the large plane of periphery, and in the large plane of periphery, be provided with multiple hole, to be connected with large sealing gasket (73) and gear housing (61) by multiple screw (79), and be provided with cone hole at the jut of case lid, so that adaptive with the conical, flexible ground of the end of the other end of staggered worm screw (72), described rear bearing block (74) is the external form having D shape, and its endoporus is round, is beneficial to and places main rear axle, to be connected with large sealing gasket (73) and gear housing (61), and be no longer the rear bearing block of wholecircle, described large sealing gasket (73) has large plane and multiple hole, to connect with gear housing (61) and rear bearing block (74) and case lid (70), the upper end minor axis of shift fork is provided with double flute and screw thread to lay torque arm and to be handled by bracing wire, rotate freely at certain angle again in the hope of making the existing desired power of dialling of shift fork, the upper shift fork head of described shift fork is symmetrical and protrusion with setting aside jaw, dial point by original one and be improved to two groups of balanced points, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of continuity gears to engage and disengage, described have the retrofit feature of injection moulding lawn machine gear-box of the straight ripple of equal pressure logarithmic curve arc wave to be: the little staggered gear of pinion Worm type of described gear-box, axle head and the big belt pulley of the little staggered gear of described Worm type are connected, the small belt pulley of described big belt pulley and power machine output shaft is connected, it is primary transmission, and no-load voltage ratio is at 2.1-4, described pinion engages with gear wheel, is called secondary transmission, the large staggered gear of gear wheel of described gear-box, it is warm extrusion powder metallurgy, described little staggered gear engages with the large staggered gear of warm extrusion powder metallurgy, and it is secondary transmission, and no-load voltage ratio is at 5.1-8, the warm extrusion powder metallurgy walking gear of described main rear axle two ends band mono-directional overrun clutch and the transmission of trailing wheel plastic annular wheel, it is three grades of transmissions, and no-load voltage ratio is at 2.1-4, coaxial and movable set is on described main rear axle with described main rear axle for described large staggered gear, and the gear of described gear wheel is large staggered gear, and it is the processing and manufacturing of warm extrusion powder metallurgy, be provided with clutch block in described gear wheel, it is also coordinate the large staggered gear containing clutch in the straight ripple of equal pressure logarithmic curve arc wave, and described gear wheel is coaxial and can be sleeved on described main rear axle rotationally with described main rear axle, described main rear axle is also set with clutch slider, described clutch slider is provided with equal pressure logarithmic curve, in other words described clutch slider is the clutch slider having the straight ripple of equal pressure logarithmic curve arc wave, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, described pin is placed in the axes normal with described main rear axle in the radial hole on described main rear axle, one end of described clutch structure is provided with clutch motion block, so that operator pull and unclamp lawn machine drive bracing wire from walking handle time, in the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, cog the clutch slider that the clutch block and described main rear axle that are provided with in the combination of case lid and described gear wheel are set with acting in conjunction under, carry out secondary transmission and implemented by the driving between described gear wheel and described main rear axle and idle running from walking certainly walking and certainly not walking of lawn machine, described have the feature of equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box to be also, described gear-box is remodeling injection moulding casing, what operator did not grab lawn machine is not with when straining at line from walking handle, because stage clip is contained in the outside of clutch slider, away from gear wheel, instead of between described gear wheel and clutch slider, normality bracing wire pine during hand pine, and bracing wire torque arm makes shift fork outwards and pushes down stage clip and make clutch slider be separated with gear wheel under extension spring effect, clutch slider and main rear axle depart from active force, and this is not for certainly walking state, when operator finger-tight lawn machine be with from walking handle strain at line time, because stage clip is contained in the outside of clutch slider, away from gear wheel, instead of between described gear wheel and clutch slider, state bracing wire is closed tight time hand-tight, and bracing wire torque arm makes shift fork inside under extension spring effect, do not push down stage clip, stage clip promotes clutch slider effectively and clutch slider is engaged with the clutch block be provided with in gear wheel, clutch slider and main rear axle relate to active force, thus realizing primary transmission, secondary transmission and three grades of transmissions, this is for certainly walking state, the described feature having the clutch slider of equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box to engage with the clutch block be provided with in gear wheel is also, the end of described clutch slider and clutch block is provided with along end circumference the conical clutch that multiple smooth curve is connected and bores, its slightly conically, the bus of the curved surface of its conical taper seat be there is pressure angle properties equivalent everywhere equiangular spiral also referred to as logatithmic spiral, so the clutch block in described clutch slider and gear wheel is convenient to smooth co-operation by equiangular spiral face, in technique scheme, one section that gets the main body of described clutch slider,
Set up differential equation d ρ/d θ=k ρ:
If polar equation ρ=ρ (θ), because wanting pressure angle λ equal everywhere, therefore tg λ=constant, makes tg λ=k,
By pressure angle formula tg λ=ρ '/ρ,
Just there is ρ '/ρ=k,
Differential it, just have differential equation d ρ/d θ=k ρ.
Solve d ρ/d θ=k ρ, both sides integration after variables separation:
∫ d ρ/ρ=∫ kd θ, because of ρ > 0, is easy to get:
lnρ＝kθ+C.
I.e. exponential form:
Adopt PRO/ENGINEERWILDFIRE mapping software, newly establish working directory, newly-built part,
Set up parameter (PARAMETER) 1:C real number (realnumber), default assignment.
Set up parameter (PARAMETER) 2:N integer (integer), default assignment.
Opening relationships (RELATION), namely equation of the present invention is:
Logarithmic curve:
z＝0
x＝10*t
y＝log(10*t+0.0001)
Make logarithmic curve;
Again then, adopt and rotate, merge, the instructions such as hypostazation, and assemble with workpiece and merge, get final product modeling;
Use described equation and the modeling of PRO/ENGINEERWILDFIRE institute again, input CNC machining center, with CIMATRO or MASTCAM, the punching block of warm extrusion powder die-casting processed, or with milling machine, planer and electrical spark working work auxiliary, when using spark machined, with described equation input CNC machining center, process, will first make tungsten copper electrode, then make the punching block clutch core rod first quenching very hard, process large staggered gear, then first to make tungsten copper electrode with gear-hobbing machine, again the swing pinion part of the tungsten copper electrode rolled out, immerse spirit of vinegar make the little several silk of described swing pinion in case precautions averts perils ground offset follow-up electric machining cydariform electric discharge in the gap of tooth root, make warm extrusion powder metallurgical gear punching block with there being the lathe of three-dimensional rotation head, machine workpieces again, what be provided with along end circumference in the end of described clutch slider and clutch block multiplely has the clutch of logatithmic spiral to bore to make arc wave and straight ripple, each described clutch cone is successively by four kinds of morphologic arrangement, be followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), the contour curve of the dominant shape state of that is boring in the multiple clutches be provided with along end circumference of described clutch slider and clutch block is logatithmic spiral roughly also known as a section of equiangular spiral, carve by each local of described four kinds of morphologic arrangement successively again, compactly radial on the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) is laterally be carved with multiple fluctuating great waves line, is also called arc wave, and on described top arc convex (1a2), do not carve line, but to make its push up the convex approximate center of circle of arc by the straight ripple of described descending nearer, again in the more precipitous form of the gradient of the straight ripple of described descending (1a3) compactly axially namely longitudinally engraving more straight have the multiple prominent muscle of fluctuating great waves and multiple groove, be also called straight ripple, at ripple of the described end (1a4), namely upper radial direction is laterally carved with a little striped, so that described in have the straight ripple of equal pressure logarithmic curve arc wave retrofit injection moulding lawn machine gear-box clutch slider and the clutch of clutch block mechanism operationally closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable, through polishing and assembling, then with being with the warm extrusion powder metallurgy press batch production of the manipulator cooperation promoting powder, gear housing remodeling injection-moulded plastic, adds 30% glass with nylon two six and carries out pre-treatment, first shine under fine day sunlight as the process of many praseodymiums light, then preliminary drying is no less than 31 minutes at 81-119 degree, gear housing after injection moulding carries out post processing, is no less than 121 minutes at 100-121 degree poach, the water that the gear-box sampling that whole fitting tight is good puts into upper strata icing is no less than 24 hours strength checkings again, gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin-7.6g/ccmin, temperature and pressure temperature is at 99-129 degree Celsius, the first immersion oil of the warm extrusion powder metallurgy workpieces of having pressed, pulls out and drains, thermal treatment again, carbo-nitriding, with methane and ammonia, is being not more than 899 degree of thermal treatments 4 hours, temper 180 degree 90 minutes again, hardness should at Rockwell HRC35-44 degree, described has the straight ripple of equal pressure logarithmic curve arc wave to retrofit the little staggered gear of injection moulding lawn machine gear-box and engaging and meeting the large staggered gear of gear wheel of described gear-box and the clutch of clutch slider of the large staggered gear of warm extrusion powder metallurgy to meet, can bearing be filled in the gear wheel of described gear-box, also can fill stage clip, described clutch slider is provided with flange (1a5), it is provided with porous (1a6) can connect rear driver plate (1a7) with multiple screw rod (1a8), described flange (1a5) is parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c) and make all capable i.e. clutch in left and right can obtain the power of shift fork, another great undertaking of described clutch slider be entirety be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), if moulding will loose core as Side could the demoulding, but because being that the bad Side of warm extrusion powder metallurgy takes out, now can loose core without Side but mould directly inserted through, the flange (1a5) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate (1a7) that portion is provided with in its back-end are equipped with the staggered opening of multiple complementation, so both conveniently stripped, stride across the bad Side of warm extrusion powder metallurgy to loose core and can not make the difficulty of double-deck flange and driver plate, facilitate again double-deck flange and driver plate therebetween plug-in mounting enter the upper shift fork head (1c) of shift fork and set aside jaw (2c), make left and right all capable namely from close the power of shift fork of can obtaining, fundamentally solve clutch not slip up.
The entirety of described clutch slider be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with the staggered opening of 4 complementations, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
The entirety of described clutch slider be provided with in the middle flange (105) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with 2-3 complementary staggered opening, there is chamfering on mouth limit, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
The entirety of described clutch slider be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with 5-24 complementary staggered opening, mouth Edge Blend angle, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Described clutch slider is provided with flange (1a5), it is provided with 2 holes (1a6), after connecting with 2 screw rods (1a8), driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), after connecting with 3-18 screw rod (1a8), driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), and it is screwed hole, after connecting with 3-18 screw rod (1a8), driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number SMF5040, for 7.0g/ccmin, temperature and pressure temperature is at 101-119 degree Celsius, and the first immersion oil of the warm extrusion powder metallurgy workpieces of having pressed, pulls out and drain; Thermal treatment again, carbon nitrogen oozes altogether, with methane and ammonia, is being not more than 818 degree of thermal treatments 4 hours; Temper 170 degree of 60-100 minute again.
Gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin, temperature and pressure temperature is at 98 degrees Celsius, the warm extrusion powder metallurgy workpieces of having pressed first immerses transgenic rape, pulls out and drains, then puts into and vacuumize tank; Thermal treatment again, carbon, nitrogen and boron oozes altogether, in the theoretical flex point 723 degree of iron-carbon alloy, 8 hours.
3-18 of being provided with along end circumference in the end of described clutch slider and clutch block has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each described clutch cone is successively by four kinds of morphologic arrangement, be followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), the contour curve of the dominant shape state of that is boring in the multiple clutches be provided with along end circumference of described clutch slider and clutch block is logatithmic spiral roughly also known as a section of equiangular spiral, carve by each local of described four kinds of morphologic arrangement successively again, compactly radial on the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) is laterally be carved with at least 2 fluctuating great waves lines, is also called arc wave, and on described top arc convex (1a2), do not carve line or have at least 1, again in the more precipitous form of the gradient of the straight ripple of described descending (1a3) compactly axially namely longitudinally engraving at least straightforward have 2 of fluctuating great waves prominent muscle and 2 grooves, be also called straight ripple, at ripple of the described end (1a4), namely upper radial direction is laterally carved with at least 1 striped, so that described in when having a straight ripple clutch of equal pressure logarithmic curve arc wave closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable.
Accompanying drawing explanation
Just postpone aforementioned multiple accompanying drawing and to improve and the accompanying drawing that increases is described further below.
Figure 51 is the schematic perspective view of the front portion of the clutch slider of lawn machine gear-box;
Figure 52 is the schematic perspective view at the rear portion of the clutch slider of lawn machine gear-box;
Figure 53 is the generalized section of the gear wheel of lawn machine gear-box;
Figure 54 is the generalized section of the gear wheel with bearing of lawn machine gear-box;
Figure 55 is the schematic perspective view having shift fork and clutch slider and gear wheel of lawn machine gear-box;
Figure 56 is the side schematic view of the opening that the flange (1a5) of clutch slider and multiple complementations of rear driver plate (1a7) interlock;
Figure 57 is the rear portion schematic diagram of the opening that the flange (1a5) of clutch slider and multiple complementations of rear driver plate (1a7) interlock;
As shown in the figure,
In figure:
1a1. is upward slope arc wave (1a1);
1a2. is top arc convex (1a2);
1a3. is the straight ripple of descending (1a3);
1a4. is end ripple (1a4);
1a5. is flange (1a5);
1a6. is porous (1a6);
1a7. is rear driver plate (1a7);
1a8. is multiple screw rod (1a8)
Usefulness:
Have the straight ripple of equal pressure logarithmic curve arc wave retrofit the great undertaking of clutch slider of injection moulding lawn machine gear-box be entirety be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), cause is that the bad Side of warm extrusion powder metallurgy takes out, the flange (1a5) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate (1a7) that portion is provided with in its back-end are equipped with the staggered opening of multiple complementation, so both conveniently stripped, stride across the difficulty that warm extrusion powder metallurgy can not make double-deck flange and driver plate, facilitate again double-deck flange and driver plate therebetween plug-in mounting enter shift fork, make left and right all capable namely from close the power of shift fork of can obtaining, fundamentally solve clutch not slip up.3-18 of being provided with along end circumference in the end of clutch slider and clutch block has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each clutch cone is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), that is be one section of logatithmic spiral at the contour curve of the dominant shape state of clutch slider and clutch block, so that when having the straight ripple clutch of logarithmic curve arc wave closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable, achieve beyond thought effect, its usefulness is self-evident.
Concrete implementing method
There is equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, described gear-box is lawn machine gear-box, its output main shaft of described gear-box is exactly the main rear axle from walking lawn machine, axle head and the big belt pulley of the pinion of described gear-box are connected, the small belt pulley of described big belt pulley and power machine output shaft is connected, and is called primary transmission, described pinion engages with gear wheel, is called secondary transmission, the walking gear of band mono-directional overrun clutch at described main rear axle two ends and the transmission of trailing wheel internal gear, be called three grades of transmissions, described gear wheel is coaxial and can be sleeved on described main rear axle rotationally with described main rear axle, clutch block is provided with in described gear wheel, described main rear axle is also set with clutch slider, described clutch slider is provided with clutch structure, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, described pin is placed in the axes normal with described main rear axle in the radial hole on described main rear axle, one end of described clutch structure is provided with clutch motion block, so that operator pull and unclamp lawn machine drive bracing wire from walking handle time, in the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, cog the clutch slider that the clutch block and described main rear axle that are provided with in the combination of case lid and described gear wheel are set with acting in conjunction under to be implemented by the driving between described gear wheel and described main rear axle and idle running from walk lawn machine certainly walking and from not walking, the axle of described pinion is arranged on the described case lid that cogs (83) by bearing, the bearing installation position of the described case lid that cogs (83) is on the side of the bearing installation position of lawn machine gear-box, movable bracing wire torque arm (84) is housed in the outside of the described case lid that cogs, the plate end of described bracing wire torque arm (84) is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm (84) the aperture hanging little returning pull-spring, the bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with is provided with open slot, many foldings, the steel wire rope side being beneficial to bracing wire is linked into and not easily breaks off relations, and is convenient to by bracing wire, bracing wire torque arm (84) rotated and drive arrangement of clutch clutch, slotted hole is provided with, to match with shift fork in the plate of described bracing wire torque arm (84), the upper end minor axis of described shift fork is also provided with double flute and screw thread to lay torque arm and to be handled by bracing wire, the upper shift fork head of described shift fork is symmetrical and protrusion with setting aside jaw, and this shift fork comprises two groups of balanced points, the inside of the described large bevel gear containing inner conical drogue clutch is provided with mesopore and the taper hollowed out, so that mesopore penetrates the rear main shaft of hay mower, be convenient to the taper that cuts out and clutch block or waveform block adaptive, be also convenient to the inwall that its taper hollowed out is provided with dress clutch block simultaneously, its taper hollowed out or be provided with taper, or be provided with the inwall of dress clutch block and multiple kick, rear main shaft is provided with the hole of hanging down mutually, therefore thick straight pin (76) can be laid, thin straight pin (78), and described stage clip is exactly spring (77), the pinion of described gear-box, for increasing gear ratio, suitably decreases the number of teeth of cone pinion, the number of teeth of described cone pinion is within 11 tooth, and large bevel gear is 28 teeth, first make interior swaging die by CNC or mould work, then powder is put into pressing formation on press, then sinter, namely the method for powder metallurgy manufactures cone pinion and the large bevel gear containing inner conical drogue clutch, prevents root to cut, the decelerator upper casing (86) of the described case lid that cogs directly can fill, described cone pinion Ao Likang pinion, described large bevel gear Ao Likang gear wheel, optimizes meshing parameter and the geometrical factor of secondary gear spiral bevel gear, to form cycloid tooth hypoid gear, by steel wire rope and pull bar, described lawn machine gear-box is made to rotate certain angle also known as the minor axis (9c) of the upper and lower side of the lower house (8c) of the gear reduction clutch housing containing multiple part, and pass through arched arm (3c) interlock upper shift fork head (1c) and set aside jaw (2c), promote slip pulling sleeve (4c) and promote Engaging-and-disengaging bearing pad (5c) and clutch block moves vertically, thus the clutch gear engaging the arrangement of clutch in the rear wheel drive gear reduction clutch of traverse gear carries out oneself walks, described arrangement of clutch contains hay mower gears to engage and disengage decelerator single side pushing sliding sleeve, by sliding sleeve (41d), and single group of limit (42d), inner cone flange (43d) formed, the sliding sleeve (41d) of described single side pushing sliding sleeve is provided with single group of limit (42d), dial on limit (42d) at the list of described single side pushing sliding sleeve and be provided with inner cone flange (43d), and the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is provided with discoid list dials limit (42d), the medial surface of inner cone flange (43d) is taper seat, and itself and axial angle are not more than 30 degree, because described single side pushing sliding sleeve (4d) is set with and slides on main shaft, the axis (7d) of therefore described single side pushing sliding sleeve (4d) coincides with the main shaft (7d) of the arrangement of clutch in hay mower gears to engage and disengage decelerator, i.e. self-moving lawn mower rear wheel drive main shaft, the outside of the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is movably installed with shift fork, shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, namely the inner cone flange (43d) dialling limit (42d) by described list contacts thrust bearing shim, thus makes arrangement of clutch work, it is in the form of annular discs that limit (42d) dialled by the list of described single side pushing sliding sleeve (4d), the back side that the disk on limit (42d) dialled by described list all can contact thrust bearing shim with described inner cone flange (43d), the upper end minor axis of shift fork is also provided with double flute and screw thread to lay pull bar and to be handled by bracing wire, thus the existing desired power of dialling of shift fork is rotated freely at certain angle again, hay mower gear-box hydraulic fluid port, the i.e. hydraulic fluid port of the side placement of gear reduction unit, by be located at rear wheel drive gear reduction clutch lower house side side platform (4e), be located at decelerator side screwed hole (2e) and be located at the below of screwed hole and the breach (3e) of the bottom surface in housing formed, the axis of described screwed hole (2e) is not orthogonal to bottom surface, conveniently the demoulding is namely without side core-pulling, and the side platform (4e) putting spiral shell mosquito hole is that arc component large with top is directly connected instead of there is indentation centre, described screwed hole for being screwed into hydraulic fluid port screw, therefore makes the external diameter of threaded line press close to end inner face as far as possible, so that few retained oil during draining, fatten very Chou Li Tuo number is very large, though can use effect should lubricating oil, describedly be located at the below of screwed hole and the breach (3e) of the bottom surface in housing is rectangle, for preventing screw from not touching and arranging, lawn machine gear-box, by according to support (62), fuselage determines frame (63), bracing wire (68), extension spring (66), dynamic arm-tie (69), auxiliary drop panel (65), main rear axle (64), gear housing (61), belt pulley (67), case lid (70), multiple screw (79), large sealing gasket (73), be provided with the staggered gear (71) of groove (71f), staggered worm screw (72), rear bearing block (74), ring washer (75), thick straight pin (76), thin straight pin (78), spring (77), formed, the described one end bolt according to support (62) is determined frame (63) with fuselage and is fixedly connected with, described fuselage is determined frame (63) and is connected firmly mutually by the rear wall of another nut with hay mower fuselage, and the described other end according to support (62) is provided with open slot (62f), described bracing wire (68) is inserted in the described open slot (62f) be provided with according to the other end of support (62) actively, and be connected with the closing in end of described extension spring (66), and the other end of described extension spring (66) i.e. hook end are connected with described dynamic arm-tie (69), described dynamic arm-tie (69) is by multiple screw (79) and gear housing (61), and case lid (70) and large sealing gasket (73) are fixedly connected, the described middle part according to support (62) is provided with macropore, and described main rear axle (64) is movingly through the described macropore according to support (62) middle part, the described other end according to support (62) is provided with open slot (62f), and the narrow groove of its open slot be provided with (62f) its opening has a turnover at least, the inside of narrow groove is connected with circular hole, so that the steel wire rope of described bracing wire (68) can be inserted in the narrow groove of turnover from the side and enter circular hole, the upper surface that the outer field end of bracing wire is then provided with open slot (62f) with the described other end according to support (62) contacts, but must not pass through, only have the steel wire rope of described bracing wire (68) by, and be connected with the closing in end of described extension spring (66), and be connected with described dynamic arm-tie (69) by the other end of described extension spring (66) i.e. hook end, described fuselage determines frame (63) has two angles to be greater than the flat board at right angle, and first flat board is provided with screwed hole or nut, and on another flat board, is provided with slotted hole, in order to assembling and the adjustment of bolt, there is the end that closes up described extension spring (66) its one end, and the other end of described extension spring (66) is the hook end of opening, described dynamic arm-tie (69) which is provided with auxiliary drop panel (65), also be provided with arc and position, multiple hole, be fixedly connected by multiple screw (79) and gear housing (61), case lid (70) and large sealing gasket (73) in order to dynamic arm-tie (69), and the auxiliary drop panel (65) that described dynamic arm-tie (69) is provided with, which is provided with position, hole, to be connected with the applicable position of fuselage by suitable spring and to play and auxiliary hold in the palm role, determine according to type, described main rear axle (64) is provided with the hole of hanging down mutually, to lay thick straight pin (76), and thin straight pin (78), and pocketed springs (77) between selling two, described spring (77) is also known as stage clip, and its two ends are and tight and polish, the described staggered gear (71) being provided with groove (71f), be enclosed within the thick straight pin (76) on the hole of hanging down mutually that is arranged on described main rear axle (64), thin straight pin (78), and the outside of the spring (77) be set with between two pins, and be meshed with described staggered worm screw (72), described staggered gear (71) its groove (71f) being provided with groove (71f) has a groove at least, described gear housing (61) is provided with lays bearing position, in order to laying staggered worm screw (72) also known as pinion, described gear housing (61) is also provided with the seat (61f) laying main rear bearing housing (74), the gear-box at the center at described seat (61f) is U-shaped, its center is far deeper than die joint, after being enough to put into the rear bearing block (74) comprising the complete main rear diameter of axle, can not die joint be exceeded, be convenient to the large sealing gasket (73) of holding plane shape, described belt pulley (67) is arranged on one end of staggered worm screw (72), and by belt by engine containing engine output end small pulley drag, one end lace wheel of described staggered worm screw (72), and staggered worm screw (72) is arranged in described gear housing (61) by bearing, and engage with described staggered gear (71), the end of the other end of described staggered worm screw (72) conically, to cheat adaptation with the cone of case lid (70) flexibly, one end lace wheel of described staggered worm screw and pinion (72), its mode connected has 2 kinds, 1st kind is with pin, described pin steel spring plate circle becomes, and broad in the middle and two is smaller, staggered worm screw (72) is first installed to gear-box, then belt pulley is installed and squeezes into pin, 2nd kind of connected mode is with key and at axle head tapping, the case lid (70) of the casing of lawn machine gear-box is provided with the large plane of periphery, and in the large plane of periphery, be provided with multiple hole, to be connected with large sealing gasket (73) and gear housing (61) by multiple screw (79), and be provided with cone hole at the jut of case lid, so that adaptive with the conical, flexible ground of the end of the other end of staggered worm screw (72), described rear bearing block (74) is the external form having D shape, and its endoporus is round, is beneficial to and places main rear axle, to be connected with large sealing gasket (73) and gear housing (61), and be no longer the rear bearing block of wholecircle, described large sealing gasket (73) has large plane and multiple hole, to connect with gear housing (61) and rear bearing block (74) and case lid (70), the upper end minor axis of shift fork is provided with double flute and screw thread to lay torque arm and to be handled by bracing wire, rotate freely at certain angle again in the hope of making the existing desired power of dialling of shift fork, the upper shift fork head of described shift fork is symmetrical and protrusion with setting aside jaw, dial point by original one and be improved to two groups of balanced points, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of continuity gears to engage and disengage, described have the retrofit feature of injection moulding lawn machine gear-box of the straight ripple of equal pressure logarithmic curve arc wave to be: the little staggered gear of pinion Worm type of described gear-box, axle head and the big belt pulley of the little staggered gear of described Worm type are connected, the small belt pulley of described big belt pulley and power machine output shaft is connected, it is primary transmission, and no-load voltage ratio is at 2.1-4, described pinion engages with gear wheel, is called secondary transmission, the large staggered gear of gear wheel of described gear-box, it is warm extrusion powder metallurgy, described little staggered gear engages with the large staggered gear of warm extrusion powder metallurgy, and it is secondary transmission, and no-load voltage ratio is at 5.1-8, the warm extrusion powder metallurgy walking gear of described main rear axle two ends band mono-directional overrun clutch and the transmission of trailing wheel plastic annular wheel, it is three grades of transmissions, and no-load voltage ratio is at 2.1-4, coaxial and movable set is on described main rear axle with described main rear axle for described large staggered gear, and the gear of described gear wheel is large staggered gear, and it is the processing and manufacturing of warm extrusion powder metallurgy, be provided with clutch block in described gear wheel, it is also coordinate the large staggered gear containing clutch in the straight ripple of equal pressure logarithmic curve arc wave, and described gear wheel is coaxial and can be sleeved on described main rear axle rotationally with described main rear axle, described main rear axle is also set with clutch slider, described clutch slider is provided with equal pressure logarithmic curve, in other words described clutch slider is the clutch slider having the straight ripple of equal pressure logarithmic curve arc wave, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, described pin is placed in the axes normal with described main rear axle in the radial hole on described main rear axle, one end of described clutch structure is provided with clutch motion block, so that operator pull and unclamp lawn machine drive bracing wire from walking handle time, in the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, cog the clutch slider that the clutch block and described main rear axle that are provided with in the combination of case lid and described gear wheel are set with acting in conjunction under, carry out secondary transmission and implemented by the driving between described gear wheel and described main rear axle and idle running from walking certainly walking and certainly not walking of lawn machine, described have the feature of equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box to be also, described gear-box is remodeling injection moulding casing, what operator did not grab lawn machine is not with when straining at line from walking handle, because stage clip is contained in the outside of clutch slider, away from gear wheel, instead of between described gear wheel and clutch slider, normality bracing wire pine during hand pine, and bracing wire torque arm makes shift fork outwards and pushes down stage clip and make clutch slider be separated with gear wheel under extension spring effect, clutch slider and main rear axle depart from active force, and this is not for certainly walking state, when operator finger-tight lawn machine be with from walking handle strain at line time, because stage clip is contained in the outside of clutch slider, away from gear wheel, instead of between described gear wheel and clutch slider, state bracing wire is closed tight time hand-tight, and bracing wire torque arm makes shift fork inside under extension spring effect, do not push down stage clip, stage clip promotes clutch slider effectively and clutch slider is engaged with the clutch block be provided with in gear wheel, clutch slider and main rear axle relate to active force, thus realizing primary transmission, secondary transmission and three grades of transmissions, this is for certainly walking state, the described feature having the clutch slider of equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box to engage with the clutch block be provided with in gear wheel is also, the end of described clutch slider and clutch block is provided with along end circumference the conical clutch that multiple smooth curve is connected and bores, its slightly conically, the bus of the curved surface of its conical taper seat be there is pressure angle properties equivalent everywhere equiangular spiral also referred to as logatithmic spiral, so the clutch block in described clutch slider and gear wheel is convenient to smooth co-operation by equiangular spiral face, in technique scheme, one section that gets the main body of described clutch slider,
Set up differential equation d ρ/d θ=k ρ:
If polar equation ρ=ρ (θ), because wanting pressure angle λ equal everywhere, therefore tg λ=constant, makes tg λ=k,
By pressure angle formula tg λ=ρ '/ρ,
Just there is ρ '/ρ=k,
Differential it, just have differential equation d ρ/d θ=k ρ.
Solve d ρ/d θ=k ρ, both sides integration after variables separation:
∫ d ρ/ρ=∫ kd θ, because of ρ > 0, is easy to get:
lnρ＝kθ+C，
I.e. exponential form:
Adopt PRO/ENGINEERWILDFIRE mapping software, newly establish working directory, newly-built part,
Set up parameter (PARAMETER) 1:C real number (realnumber), default assignment.
Set up parameter (PARAMETER) 2:N integer (integer), default assignment.
Opening relationships (RELATION), namely equation of the present invention is:
Logarithmic curve:
z＝0
x＝10*t
y＝log(10*t+0.0001)
Make logarithmic curve;
Again then, adopt and rotate, merge, the instructions such as hypostazation, and assemble with workpiece and merge, get final product modeling;
Use described equation and the modeling of PRO/ENGINEERWILDFIRE institute again, input CNC machining center, with CIMATRO or MASTCAM, the punching block of warm extrusion powder die-casting processed, or with milling machine, planer and electrical spark working work auxiliary, when using spark machined, with described equation input CNC machining center, process, will first make tungsten copper electrode, then make the punching block clutch core rod first quenching very hard, process large staggered gear, then first to make tungsten copper electrode with gear-hobbing machine, again the swing pinion part of the tungsten copper electrode rolled out, immerse spirit of vinegar make the little several silk of described swing pinion in case precautions averts perils ground offset follow-up electric machining cydariform electric discharge in the gap of tooth root, make warm extrusion powder metallurgical gear punching block with there being the lathe of three-dimensional rotation head, machine workpieces again, what be provided with along end circumference in the end of described clutch slider and clutch block multiplely has the clutch of logatithmic spiral to bore to make arc wave and straight ripple, each described clutch cone is successively by four kinds of morphologic arrangement, be followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), the contour curve of the dominant shape state of that is boring in the multiple clutches be provided with along end circumference of described clutch slider and clutch block is logatithmic spiral roughly also known as a section of equiangular spiral, carve by each local of described four kinds of morphologic arrangement successively again, compactly radial on the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) is laterally be carved with multiple fluctuating great waves line, is also called arc wave, and on described top arc convex (1a2), do not carve line, but to make its push up the convex approximate center of circle of arc by the straight ripple of described descending nearer, again in the more precipitous form of the gradient of the straight ripple of described descending (1a3) compactly axially namely longitudinally engraving more straight have the multiple prominent muscle of fluctuating great waves and multiple groove, be also called straight ripple, at ripple of the described end (1a4), namely upper radial direction is laterally carved with a little striped, so that described in have the straight ripple of equal pressure logarithmic curve arc wave retrofit injection moulding lawn machine gear-box clutch slider and the clutch of clutch block mechanism operationally closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable, through polishing and assembling, then with being with the warm extrusion powder metallurgy press batch production of the manipulator cooperation promoting powder, gear housing remodeling injection-moulded plastic, adds 30% glass with nylon two six and carries out pre-treatment, first shine under fine day sunlight as the process of many praseodymiums light, then preliminary drying is no less than 31 minutes at 81-119 degree, gear housing after injection moulding carries out post processing, is no less than 121 minutes at 100-121 degree poach, the water that the gear-box sampling that whole fitting tight is good puts into upper strata icing is no less than 24 hours strength checkings again, gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin-7.6g/ccmin, temperature and pressure temperature is at 99-129 degree Celsius, the first immersion oil of the warm extrusion powder metallurgy workpieces of having pressed, pulls out and drains, thermal treatment again, carbo-nitriding, with methane and ammonia, is being not more than 899 degree of thermal treatments 4 hours, temper 180 degree 90 minutes again, hardness should at Rockwell HRC35-44 degree, described has the straight ripple of equal pressure logarithmic curve arc wave to retrofit the little staggered gear of injection moulding lawn machine gear-box and engaging and meeting the large staggered gear of gear wheel of described gear-box and the clutch of clutch slider of the large staggered gear of warm extrusion powder metallurgy to meet, can bearing be filled in the gear wheel of described gear-box, also can fill stage clip, described clutch slider is provided with flange (1a5), it is provided with porous (1a6) can connect rear driver plate (1a7) with multiple screw rod (1a8), described flange (1a5) is parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c) and make all capable i.e. clutch in left and right can obtain the power of shift fork, another great undertaking of described clutch slider be entirety be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), if moulding will loose core as Side could the demoulding, but because being that the bad Side of warm extrusion powder metallurgy takes out, now can loose core without Side but mould directly inserted through, the flange (1a5) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate (1a7) that portion is provided with in its back-end are equipped with the staggered opening of multiple complementation, so both conveniently stripped, stride across the bad Side of warm extrusion powder metallurgy to loose core and can not make the difficulty of double-deck flange and driver plate, facilitate again double-deck flange and driver plate therebetween plug-in mounting enter the upper shift fork head (1c) of shift fork and set aside jaw (2c), make left and right all capable namely from close the power of shift fork of can obtaining, fundamentally solve clutch not slip up.
The entirety of described clutch slider be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with the staggered opening of 4 complementations, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
The entirety of described clutch slider be provided with in the middle flange (105) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with 2-3 complementary staggered opening, there is chamfering on mouth limit, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
The entirety of described clutch slider be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with 5-24 complementary staggered opening, mouth Edge Blend angle, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Described clutch slider is provided with flange (1a5), it is provided with 2 holes (1a6), after connecting with 2 screw rods (1a8), driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), after connecting with 3-18 screw rod (1a8), driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), and it is screwed hole, after connecting with 3-18 screw rod (1a8), driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
Gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number SMF5040, for 7.0g/ccmin, temperature and pressure temperature is at 101-119 degree Celsius, and the first immersion oil of the warm extrusion powder metallurgy workpieces of having pressed, pulls out and drain; Thermal treatment again, carbon nitrogen oozes altogether, with methane and ammonia, is being not more than 818 degree of thermal treatments 4 hours; Temper 170 degree of 60-100 minute again.
Gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin, temperature and pressure temperature is at 98 degrees Celsius, the warm extrusion powder metallurgy workpieces of having pressed first immerses transgenic rape, pulls out and drains, then puts into and vacuumize tank; Thermal treatment again, carbon, nitrogen and boron oozes altogether, in the theoretical flex point 723 degree of iron-carbon alloy, 8 hours.
3-18 of being provided with along end circumference in the end of described clutch slider and clutch block has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each described clutch cone is successively by four kinds of morphologic arrangement, be followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), the contour curve of the dominant shape state of that is boring in the multiple clutches be provided with along end circumference of described clutch slider and clutch block is logatithmic spiral roughly also known as a section of equiangular spiral, carve by each local of described four kinds of morphologic arrangement successively again, compactly radial on the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) is laterally be carved with at least 2 fluctuating great waves lines, is also called arc wave, and on described top arc convex (1a2), do not carve line or have at least 1, again in the more precipitous form of the gradient of the straight ripple of described descending (1a3) compactly axially namely longitudinally engraving at least straightforward have 2 of fluctuating great waves prominent muscle and 2 grooves, be also called straight ripple, at ripple of the described end (1a4), namely upper radial direction is laterally carved with at least 1 striped, so that described in when having a straight ripple clutch of equal pressure logarithmic curve arc wave closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable.
The present invention relates to a kind of for garden, the hay mower that the places such as park and road side cut the grass on a lawn, especially equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box is had, its great undertaking be clutch slider entirety be provided with in the middle flange (105) and in its back-end portion be provided with rear driver plate (1a7), cause is that the bad Side of warm extrusion powder metallurgy takes out, the flange (105) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate (1a7) that portion is provided with in its back-end are equipped with the staggered opening of multiple complementation, so both conveniently stripped, stride across the difficulty that warm extrusion powder metallurgy can not make double-deck flange and driver plate, facilitate again double-deck flange and driver plate therebetween plug-in mounting enter shift fork, make left and right all capable namely from close the power of shift fork of can obtaining, fundamentally solve clutch not slip up.What the end of clutch slider and clutch block was provided with along end circumference multiplely has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each clutch cone is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), that is be one section of logatithmic spiral at the contour curve of the dominant shape state of described clutch slider and clutch block, so that when having the straight ripple clutch of logarithmic curve arc wave closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable.Explore warm extrusion powder metallurgy manufacture method and also have many innovations.No matter hay mower gear-box is Plastic or metal species, is subject to the restriction such as technology and cost, and certainly walk the not steady and insecure situation of clutch and happen occasionally, solve sporadic not clutch problem, be the international hard nut to crack of industry always.
Equal pressure logarithmic curve sounds profound, but be common in its tangible factory, this kind of have the many intermediate pincers worker of the cam of equal pressure logarithmic curve all can do, make the punching block core that two have equal pressure logarithmic curve, what the end of clutch slider and clutch block was provided with along end circumference multiplely has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each clutch cone is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), that is be one section of logatithmic spiral at the contour curve of the dominant shape state of described clutch slider and clutch block, produce in batches again, logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box manufacture method is not difficult.
Specific embodiments various described in this specification is treasure and the crystallization of domestic and foreign experience; also be used to describe in detail the object of this creation, feature and effect; for the people's bodyguard being familiar with this type of skill; according to above-mentioned all explanations; may to do this invention and specific embodiment and some part does some modifications and amendment; its essence does not detach the scope person of this creation, all should be included within the scope of patent protection of the present invention, should first Chen Ming.

Claims (10)

1. there is equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, described gear-box is lawn machine gear-box, its output main shaft of described gear-box is exactly the main rear axle from walking lawn machine, axle head and the big belt pulley of the pinion of described gear-box are connected, the small belt pulley of described big belt pulley and power machine output shaft is connected, and is called primary transmission, described pinion engages with gear wheel, is called secondary transmission, the walking gear of band mono-directional overrun clutch at described main rear axle two ends and the transmission of trailing wheel internal gear, be called three grades of transmissions, described gear wheel is coaxial and can be sleeved on described main rear axle rotationally with described main rear axle, clutch block is provided with in described gear wheel, described main rear axle is also set with clutch slider, described clutch slider is provided with clutch structure, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, described pin is placed in the axes normal with described main rear axle in the radial hole on described main rear axle, one end of described clutch structure is provided with clutch motion block, so that operator pull and unclamp lawn machine drive bracing wire from walking handle time, in the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, cog the clutch slider that the clutch block and described main rear axle that are provided with in the combination of case lid and described gear wheel are set with acting in conjunction under to be implemented by the driving between described gear wheel and described main rear axle and idle running from walk lawn machine certainly walking and from not walking, the axle of described pinion is arranged on the described case lid that cogs (83) by bearing, the bearing installation position of the described case lid that cogs (83) is on the side of the bearing installation position of lawn machine gear-box, movable bracing wire torque arm (84) is housed in the outside of the described case lid that cogs, the plate end of described bracing wire torque arm (84) is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm (84) the aperture hanging little returning pull-spring, the bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with is provided with open slot, many foldings, the steel wire rope side being beneficial to bracing wire is linked into and not easily breaks off relations, and is convenient to by bracing wire, bracing wire torque arm (84) rotated and drive arrangement of clutch clutch, slotted hole is provided with, to match with shift fork in the plate of described bracing wire torque arm (84), the upper end minor axis of described shift fork is also provided with double flute and screw thread to lay torque arm and to be handled by bracing wire, the upper shift fork head of described shift fork is symmetrical and protrusion with setting aside jaw, and this shift fork comprises two groups of balanced points, the inside of the described large bevel gear containing inner conical drogue clutch is provided with mesopore and the taper hollowed out, so that mesopore penetrates the rear main shaft of hay mower, be convenient to the taper that cuts out and clutch block or waveform block adaptive, be also convenient to the inwall that its taper hollowed out is provided with dress clutch block simultaneously, its taper hollowed out or be provided with taper, or be provided with the inwall of dress clutch block and multiple kick, rear main shaft is provided with the hole of hanging down mutually, therefore thick straight pin (76) can be laid, thin straight pin (78), and described stage clip is exactly spring (77), the pinion of described gear-box, for increasing gear ratio, suitably decreases the number of teeth of cone pinion, the number of teeth of described cone pinion is within 11 tooth, and large bevel gear is 28 teeth, first make interior swaging die by CNC or mould work, then powder is put into pressing formation on press, then sinter, namely the method for powder metallurgy manufactures cone pinion and the large bevel gear containing inner conical drogue clutch, prevents root to cut, the decelerator upper casing (86) of the described case lid that cogs directly can fill, described cone pinion Ao Likang pinion, described large bevel gear Ao Likang gear wheel, optimizes meshing parameter and the geometrical factor of secondary gear spiral bevel gear, to form cycloid tooth hypoid gear, by steel wire rope and pull bar, described lawn machine gear-box is made to rotate certain angle also known as the minor axis (9c) of the upper and lower side of the lower house (8c) of the gear reduction clutch housing containing multiple part, and pass through arched arm (3c) interlock upper shift fork head (1c) and set aside jaw (2c), promote slip pulling sleeve (4c) and promote Engaging-and-disengaging bearing pad (5c) and clutch block moves vertically, thus the clutch gear engaging the arrangement of clutch in the rear wheel drive gear reduction clutch of traverse gear carries out oneself walks, described arrangement of clutch contains hay mower gears to engage and disengage decelerator single side pushing sliding sleeve, by sliding sleeve (41d), and single group of limit (42d), inner cone flange (43d) formed, the sliding sleeve (41d) of described single side pushing sliding sleeve is provided with single group of limit (42d), dial on limit (42d) at the list of described single side pushing sliding sleeve and be provided with inner cone flange (43d), and the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is provided with discoid list dials limit (42d), the medial surface of inner cone flange (43d) is taper seat, and itself and axial angle are not more than 30 degree, because described single side pushing sliding sleeve (4d) is set with and slides on main shaft, the axis (7d) of therefore described single side pushing sliding sleeve (4d) coincides with the main shaft (7d) of the arrangement of clutch in hay mower gears to engage and disengage decelerator, i.e. self-moving lawn mower rear wheel drive main shaft, the outside of the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is movably installed with shift fork, shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, namely the inner cone flange (43d) dialling limit (42d) by described list contacts thrust bearing shim, thus makes arrangement of clutch work, it is in the form of annular discs that limit (42d) dialled by the list of described single side pushing sliding sleeve (4d), the back side that the disk on limit (42d) dialled by described list all can contact thrust bearing shim with described inner cone flange (43d), the upper end minor axis of shift fork is also provided with double flute and screw thread to lay pull bar and to be handled by bracing wire, thus the existing desired power of dialling of shift fork is rotated freely at certain angle again, hay mower gear-box hydraulic fluid port, the i.e. hydraulic fluid port of the side placement of gear reduction unit, by be located at rear wheel drive gear reduction clutch lower house side side platform (4e), be located at decelerator side screwed hole (2e) and be located at the below of screwed hole and the breach (3e) of the bottom surface in housing formed, the axis of described screwed hole (2e) is not orthogonal to bottom surface, conveniently the demoulding is namely without side core-pulling, and the side platform (4e) putting spiral shell mosquito hole is that arc component large with top is directly connected instead of there is indentation centre, described screwed hole for being screwed into hydraulic fluid port screw, therefore makes the external diameter of threaded line press close to end inner face as far as possible, so that few retained oil during draining, described be located at the below of screwed hole and the breach (3e) of the bottom surface in housing is rectangle, for preventing screw from not touching and arranging, lawn machine gear-box, by according to support (62), fuselage determines frame (63), bracing wire (68), extension spring (66), dynamic arm-tie (69), auxiliary drop panel (65), main rear axle (64), gear housing (61), belt pulley (67), case lid (70), multiple screw (79), large sealing gasket (73), be provided with the staggered gear (71) of groove (71f), staggered worm screw (72), rear bearing block (74), ring washer (75), thick straight pin (76), thin straight pin (78), spring (77), formed, the described one end bolt according to support (62) is determined frame (63) with fuselage and is fixedly connected with, described fuselage is determined frame (63) and is connected firmly mutually by the rear wall of another nut with hay mower fuselage, and the described other end according to support (62) is provided with open slot (62f), described bracing wire (68) is inserted in the described open slot (62f) be provided with according to the other end of support (62) actively, and be connected with the closing in end of described extension spring (66), and the other end of described extension spring (66) i.e. hook end are connected with described dynamic arm-tie (69), described dynamic arm-tie (69) is by multiple screw (79) and gear housing (61), and case lid (70) and large sealing gasket (73) are fixedly connected, the described middle part according to support (62) is provided with macropore, and described main rear axle (64) is movingly through the described macropore according to support (62) middle part, the described other end according to support (62) is provided with open slot (62f), and the narrow groove of its open slot be provided with (62f) its opening has a turnover at least, the inside of narrow groove is connected with circular hole, so that the steel wire rope of described bracing wire (68) can be inserted in the narrow groove of turnover from the side and enter circular hole, the upper surface that the outer field end of bracing wire is then provided with open slot (62f) with the described other end according to support (62) contacts, but must not pass through, only have the steel wire rope of described bracing wire (68) by, and be connected with the closing in end of described extension spring (66), and be connected with described dynamic arm-tie (69) by the other end of described extension spring (66) i.e. hook end, described fuselage determines frame (63) has two angles to be greater than the flat board at right angle, and first flat board is provided with screwed hole or nut, and on another flat board, is provided with slotted hole, in order to assembling and the adjustment of bolt, there is the end that closes up described extension spring (66) its one end, and the other end of described extension spring (66) is the hook end of opening, described dynamic arm-tie (69) which is provided with auxiliary drop panel (65), also be provided with arc and position, multiple hole, be fixedly connected by multiple screw (79) and gear housing (61), case lid (70) and large sealing gasket (73) in order to dynamic arm-tie (69), and the auxiliary drop panel (65) that described dynamic arm-tie (69) is provided with, which is provided with position, hole, to be connected with the applicable position of fuselage by suitable spring and to play and auxiliary hold in the palm role, determine according to type, described main rear axle (64) is provided with the hole of hanging down mutually, to lay thick straight pin (76), and thin straight pin (78), and pocketed springs (77) between selling two, described spring (77) is also known as stage clip, and its two ends are and tight and polish, the described staggered gear (71) being provided with groove (71f), be enclosed within the thick straight pin (76) on the hole of hanging down mutually that is arranged on described main rear axle (64), thin straight pin (78), and the outside of the spring (77) be set with between two pins, and be meshed with described staggered worm screw (72), described staggered gear (71) its groove (71f) being provided with groove (71f) has a groove at least, described gear housing (61) is provided with lays bearing position, in order to laying staggered worm screw (72) also known as pinion, described gear housing (61) is also provided with the seat (61f) laying main rear bearing housing (74), the gear-box at the center at described seat (61f) is U-shaped, its center is far deeper than die joint, after being enough to put into the rear bearing block (74) comprising the complete main rear diameter of axle, can not die joint be exceeded, be convenient to the large sealing gasket (73) of holding plane shape, described belt pulley (67) is arranged on one end of staggered worm screw (72), and by belt by engine containing engine output end small pulley drag, one end lace wheel of described staggered worm screw (72), and staggered worm screw (72) is arranged in described gear housing (61) by bearing, and engage with described staggered gear (71), the end of the other end of described staggered worm screw (72) conically, to cheat adaptation with the cone of case lid (70) flexibly, one end lace wheel of described staggered worm screw and pinion (72), its mode connected has 2 kinds, 1st kind is with pin, described pin steel spring plate circle becomes, and broad in the middle and two is smaller, staggered worm screw (72) is first installed to gear-box, then belt pulley is installed and squeezes into pin, 2nd kind of connected mode is with key and at axle head tapping, the case lid (70) of the casing of lawn machine gear-box is provided with the large plane of periphery, and in the large plane of periphery, be provided with multiple hole, to be connected with large sealing gasket (73) and gear housing (61) by multiple screw (79), and be provided with cone hole at the jut of case lid, so that adaptive with the conical, flexible ground of the end of the other end of staggered worm screw (72), described rear bearing block (74) is the external form having D shape, and its endoporus is round, is beneficial to and places main rear axle, to be connected with large sealing gasket (73) and gear housing (61), and be no longer the rear bearing block of wholecircle, described large sealing gasket (73) has large plane and multiple hole, to connect with gear housing (61) and rear bearing block (74) and case lid (70), the upper end minor axis of shift fork is provided with double flute and screw thread to lay torque arm and to be handled by bracing wire, rotate freely at certain angle again in the hope of making the existing desired power of dialling of shift fork, the upper shift fork head of described shift fork is symmetrical and protrusion with setting aside jaw, dial point by original one and be improved to two groups of balanced points, make original list dial torsional moment to improve to some extent, clutch is stirred comparatively before be improved, make pad not fragile, add the improvement of other associated components, the life-span of continuity gears to engage and disengage, described have the retrofit feature of injection moulding lawn machine gear-box of the straight ripple of equal pressure logarithmic curve arc wave to be: the little staggered gear of pinion Worm type of described gear-box, axle head and the big belt pulley of the little staggered gear of described Worm type are connected, the small belt pulley of described big belt pulley and power machine output shaft is connected, it is primary transmission, and no-load voltage ratio is at 2.1-4, described pinion engages with gear wheel, is called secondary transmission, the large staggered gear of gear wheel of described gear-box, it is warm extrusion powder metallurgy, described little staggered gear engages with the large staggered gear of warm extrusion powder metallurgy, and it is secondary transmission, and no-load voltage ratio is at 5.1-8, the warm extrusion powder metallurgy walking gear of described main rear axle two ends band mono-directional overrun clutch and the transmission of trailing wheel plastic annular wheel, it is three grades of transmissions, and no-load voltage ratio is at 2.1-4, coaxial and movable set is on described main rear axle with described main rear axle for described large staggered gear, and the gear of described gear wheel is large staggered gear, and it is the processing and manufacturing of warm extrusion powder metallurgy, be provided with clutch block in described gear wheel, it is also coordinate the large staggered gear containing clutch in the straight ripple of equal pressure logarithmic curve arc wave, and described gear wheel is coaxial and can be sleeved on described main rear axle rotationally with described main rear axle, described main rear axle is also set with clutch slider, described clutch slider is provided with equal pressure logarithmic curve, in other words described clutch slider is the clutch slider having the straight ripple of equal pressure logarithmic curve arc wave, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, described pin is placed in the axes normal with described main rear axle in the radial hole on described main rear axle, one end of described clutch structure is provided with clutch motion block, so that operator pull and unclamp lawn machine drive bracing wire from walking handle time, in the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, cog the clutch slider that the clutch block and described main rear axle that are provided with in the combination of case lid and described gear wheel are set with acting in conjunction under, carry out secondary transmission and implemented by the driving between described gear wheel and described main rear axle and idle running from walking certainly walking and certainly not walking of lawn machine, described have the feature of equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box to be also, described gear-box is remodeling injection moulding casing, what operator did not grab lawn machine is not with when straining at line from walking handle, because stage clip is contained in the outside of clutch slider, away from gear wheel, instead of between described gear wheel and clutch slider, normality bracing wire pine during hand pine, and bracing wire torque arm makes shift fork outwards and pushes down stage clip and make clutch slider be separated with gear wheel under extension spring effect, clutch slider and main rear axle depart from active force, and this is not for certainly walking state, when operator finger-tight lawn machine be with from walking handle strain at line time, because stage clip is contained in the outside of clutch slider, away from gear wheel, instead of between described gear wheel and clutch slider, state bracing wire is closed tight time hand-tight, and bracing wire torque arm makes shift fork inside under extension spring effect, do not push down stage clip, stage clip promotes clutch slider effectively and clutch slider is engaged with the clutch block be provided with in gear wheel, clutch slider and main rear axle relate to active force, thus realizing primary transmission, secondary transmission and three grades of transmissions, this is for certainly walking state, the described feature having the clutch slider of equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box to engage with the clutch block be provided with in gear wheel is also, the end of described clutch slider and clutch block is provided with along end circumference the conical clutch that multiple smooth curve is connected and bores, its slightly conically, the bus of the curved surface of its conical taper seat be there is pressure angle properties equivalent everywhere equiangular spiral also referred to as logatithmic spiral, so the clutch block in described clutch slider and gear wheel is convenient to smooth co-operation by equiangular spiral face, in technique scheme, one section that gets the main body of described clutch slider,
Set up differential equation d ρ/d θ=k ρ:
If polar equation ρ=ρ (θ), because wanting pressure angle λ equal everywhere, therefore tg λ=constant, makes tg λ=k,
By pressure angle formula tg λ=ρ '/ρ,
Just there is ρ '/ρ=k,
Differential it, just have differential equation d ρ/d θ=k ρ.
Solve d ρ/d θ=k ρ, both sides integration after variables separation:
∫ d ρ/ρ=∫ kd θ, because of ρ > 0, is easy to get:
lnρ＝kθ+C，
I.e. exponential form:
kθckθkθ
ρ＝Ae＝e.e＝Ae
Adopt PRO/ENGINEERWILDFIRE mapping software, newly establish working directory, newly-built part,
Set up parameter (PARAMETER) 1:C real number (realnumber), default assignment.
Set up parameter (PARAMETER) 2:N integer (integer), default assignment.
Opening relationships (RELATION), namely equation of the present invention is:
Logarithmic curve:
z＝0
x＝10*t
y＝log(10*t+0.0001)
Make logarithmic curve;
Again then, adopt and rotate, merge, the instructions such as hypostazation, and assemble with workpiece and merge, get final product modeling;
Use described equation and the modeling of PRO/ENGINEERWILDFIRE institute again, input CNC machining center, with CIMATRO or MASTCAM, the punching block of warm extrusion powder die-casting processed, or with milling machine, planer and electrical spark working work auxiliary, when using spark machined, with described equation input CNC machining center, process, will first make tungsten copper electrode, then make the punching block clutch core rod first quenching very hard, process large staggered gear, then first to make tungsten copper electrode with gear-hobbing machine, again the swing pinion part of the tungsten copper electrode rolled out, immerse spirit of vinegar make the little several silk of described swing pinion in case precautions averts perils ground offset follow-up electric machining cydariform electric discharge in the gap of tooth root, make warm extrusion powder metallurgical gear punching block with there being the lathe of three-dimensional rotation head, machine workpieces again, what be provided with along end circumference in the end of described clutch slider and clutch block multiplely has the clutch of logatithmic spiral to bore to make arc wave and straight ripple, each described clutch cone is successively by four kinds of morphologic arrangement, be followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), the contour curve of the dominant shape state of that is boring in the multiple clutches be provided with along end circumference of described clutch slider and clutch block is logatithmic spiral roughly also known as a section of equiangular spiral, carve by each local of described four kinds of morphologic arrangement successively again, compactly radial on the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) is laterally be carved with multiple fluctuating great waves line, is also called arc wave, and on described top arc convex (1a2), do not carve line, but to make its push up the convex approximate center of circle of arc by the straight ripple of described descending nearer, again in the more precipitous form of the gradient of the straight ripple of described descending (1a3) compactly axially namely longitudinally engraving more straight have the multiple prominent muscle of fluctuating great waves and multiple groove, be also called straight ripple, at ripple of the described end (1a4), namely upper radial direction is laterally carved with a little striped, so that described in have the straight ripple of equal pressure logarithmic curve arc wave retrofit injection moulding lawn machine gear-box clutch slider and the clutch of clutch block mechanism operationally closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable, through polishing and assembling, then with being with the warm extrusion powder metallurgy press batch production of the manipulator cooperation promoting powder, gear housing remodeling injection-moulded plastic, adds 30% glass with nylon two six and carries out pre-treatment, first shine under fine day sunlight as the process of many praseodymiums light, then preliminary drying is no less than 31 minutes at 81-119 degree, gear housing after injection moulding carries out post processing, is no less than 121 minutes at 100-121 degree poach, the water that the gear-box sampling that whole fitting tight is good puts into upper strata icing is no less than 24 hours strength checkings again, gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin-7.6g/ccmin, temperature and pressure temperature is at 99-129 degree Celsius, the first immersion oil of the warm extrusion powder metallurgy workpieces of having pressed, pulls out and drains, thermal treatment again, carbo-nitriding, with methane and ammonia, is being not more than 899 degree of thermal treatments 4 hours, temper 180 degree 90 minutes again, hardness should at Rockwell HRC35-44 degree, described has the straight ripple of equal pressure logarithmic curve arc wave to retrofit the little staggered gear of injection moulding lawn machine gear-box and engaging and meeting the large staggered gear of gear wheel of described gear-box and the clutch of clutch slider of the large staggered gear of warm extrusion powder metallurgy to meet, can bearing be filled in the gear wheel of described gear-box, also can fill stage clip, described clutch slider is provided with flange (1a5), it is provided with porous (1a6) can connect rear driver plate (1a7) with multiple screw rod (1a8), described flange (1a5) is parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c) and make all capable i.e. clutch in left and right can obtain the power of shift fork, another great undertaking of described clutch slider be entirety be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), if moulding will loose core as Side could the demoulding, but because being that the bad Side of warm extrusion powder metallurgy takes out, now can loose core without Side but mould directly inserted through, the flange (1a5) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate (1a7) that portion is provided with in its back-end are equipped with the staggered opening of multiple complementation, so both conveniently stripped, stride across the bad Side of warm extrusion powder metallurgy to loose core and can not make the difficulty of double-deck flange and driver plate, facilitate again double-deck flange and driver plate therebetween plug-in mounting enter the upper shift fork head (1c) of shift fork and set aside jaw (2c), make left and right all capable namely from close the power of shift fork of can obtaining, fundamentally solve clutch not slip up.
2. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, it is characterized in that: the entirety of described clutch slider be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with the staggered opening of 4 complementations, described flange (1a5) and described rear driver plate (1a7) have parallel surface, be beneficial to plug-in mounting between enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
3. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, it is characterized in that: the entirety of described clutch slider be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with 2-3 complementary staggered opening, there is chamfering on mouth limit, described flange (1a5) and described rear driver plate (1a7) have parallel surface, be beneficial to plug-in mounting between enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
4. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, it is characterized in that: the entirety of described clutch slider be provided with in the middle flange (1a5) and in its back-end portion be provided with rear driver plate (1a7), and the flange (1a5) be provided with in the middle part of it at described clutch slider and portion is provided with in its back-end rear driver plate (1a7) are equipped with 5-24 complementary staggered opening, mouth Edge Blend angle, described flange (105) and described rear driver plate (1a7) have parallel surface, be beneficial to plug-in mounting between enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).
5. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, it is characterized in that: described clutch slider is provided with flange (1a5), it is provided with 2 holes (1a6), after connecting with 2 screw rods (1a8), driver plate (1a7) makes described flange (105) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
6. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, it is characterized in that: described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), after connecting with 3-18 screw rod (1a8), driver plate (1a7) makes described flange (105) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
7. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple remodeling injection moulding lawn machine gear-box, it is characterized in that: described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), and it is screwed hole, after connecting with 3-18 screw rod (1a8), driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters the upper shift fork head (1c) of shift fork and set aside jaw (2c).
8. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, it is characterized in that: gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number SMF5040, be 7.0g/ccmin, temperature and pressure temperature is at 101-119 degree Celsius, the first immersion oil of the warm extrusion powder metallurgy workpieces of having pressed, pulls out and drains; Thermal treatment again, carbon nitrogen oozes altogether, with methane and ammonia, is being not more than 818 degree of thermal treatments 4 hours; Temper 170 degree of 60-100 minute again.
9. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, it is characterized in that: gear wheel large staggered gear and the clutch slider of described gear-box, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin, temperature and pressure temperature is at 98 degrees Celsius, and the warm extrusion powder metallurgy workpieces of having pressed first immerses transgenic rape, pull out and drain, then put into and vacuumize tank; Thermal treatment again, carbon, nitrogen and boron oozes altogether, in the theoretical flex point 723 degree of iron-carbon alloy, 8 hours.
10. according to claim 1 have equal pressure logarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, it is characterized in that: 3-18 of being provided with along end circumference in the end of described clutch slider and clutch block has the clutch of logatithmic spiral to bore to be shaped with arc wave and straight ripple, each described clutch cone is successively by four kinds of morphologic arrangement, be followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), the contour curve of the dominant shape state of that is boring in the multiple clutches be provided with along end circumference of described clutch slider and clutch block is logatithmic spiral roughly also known as a section of equiangular spiral, carve by each local of described four kinds of morphologic arrangement successively again, compactly radial on the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) is laterally be carved with at least 2 fluctuating great waves lines, is also called arc wave, and on described top arc convex (1a2), do not carve line or have at least 1, again in the more precipitous form of the gradient of the straight ripple of described descending (1a3) compactly axially namely longitudinally engraving at least straightforward have 2 of fluctuating great waves prominent muscle and 2 grooves, be also called straight ripple, at ripple of the described end (1a4), namely upper radial direction is laterally carved with at least 1 striped, so that described in when having a straight ripple clutch of equal pressure logarithmic curve arc wave closer to the equal everywhere scientific basis of the pressure angle of higher mathematics more steadily and more reliable.
CN201510011758.XA 2015-01-07 2015-01-07 Remodeling injection moulding lawn machine gear box with equal pressure logistic curve arc wave linear ripple Pending CN105027840A (en)

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CN201533507U (en) * 2009-07-23 2010-07-28 宁波大叶园林设备有限公司 Sine-wave type clutch gear of rear-driving clutch for lawn mower
CN102197744A (en) * 2011-01-25 2011-09-28 宁波大叶园林设备有限公司 Inner taper sleeve clutch cycloidal tooth hypoid gear speed reducer for lawn machine
CN102282974A (en) * 2011-03-17 2011-12-21 宁波大叶园林设备有限公司 Large module gear and gear case with involute sawtooth wave clutch for lawn machine
CN103147840A (en) * 2012-12-18 2013-06-12 宁波大叶园林设备有限公司 Petrol engine for turbulence reversing emission reducing of logarithmic differentiation isogonal line skirt edge of piston skirt
CN103404295A (en) * 2013-08-17 2013-11-27 宁波大叶园林设备有限公司 Low-emission gasoline grass pruning machine with carburetor realizing throat gap atomization

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060021313A1 (en) * 2004-07-30 2006-02-02 Honda Motor Co., Ltd. Apparatuses and methods for controlling a variable speed transmission
CN201533507U (en) * 2009-07-23 2010-07-28 宁波大叶园林设备有限公司 Sine-wave type clutch gear of rear-driving clutch for lawn mower
CN102197744A (en) * 2011-01-25 2011-09-28 宁波大叶园林设备有限公司 Inner taper sleeve clutch cycloidal tooth hypoid gear speed reducer for lawn machine
CN102282974A (en) * 2011-03-17 2011-12-21 宁波大叶园林设备有限公司 Large module gear and gear case with involute sawtooth wave clutch for lawn machine
CN103147840A (en) * 2012-12-18 2013-06-12 宁波大叶园林设备有限公司 Petrol engine for turbulence reversing emission reducing of logarithmic differentiation isogonal line skirt edge of piston skirt
CN103404295A (en) * 2013-08-17 2013-11-27 宁波大叶园林设备有限公司 Low-emission gasoline grass pruning machine with carburetor realizing throat gap atomization

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