CN105090389A - Manually-operated single-period movement mechanism - Google Patents
Manually-operated single-period movement mechanism Download PDFInfo
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- CN105090389A CN105090389A CN201510573888.2A CN201510573888A CN105090389A CN 105090389 A CN105090389 A CN 105090389A CN 201510573888 A CN201510573888 A CN 201510573888A CN 105090389 A CN105090389 A CN 105090389A
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- fixed plate
- down mechanism
- monocyclic
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- 230000007246 mechanism Effects 0.000 title claims abstract description 135
- 230000033001 locomotion Effects 0.000 title claims abstract description 30
- 210000003127 knee Anatomy 0.000 claims description 23
- 210000003746 feather Anatomy 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005381 potential energy Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 230000037147 athletic performance Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 125000002950 monocyclic group Chemical group 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
- F16H3/22—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially
- F16H3/30—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial
- F16H3/32—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial and an additional shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/002—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having teeth movable out of mesh
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
- F16H3/40—Gearings for reversal only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/302—Final output mechanisms for reversing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3079—Shift rod assembly, e.g. supporting, assembly or manufacturing of shift rails or rods; Special details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/325—Rocker or swiveling forks, i.e. the forks are pivoted in the gear case when moving the sleeve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention relates to a manually-operated single-period movement mechanism. The manually-operated single-period movement mechanism comprises a driving mechanism and a shifting mechanism which are connected through a shifting fork. The driving mechanism comprises a driving gear which can be engaged with a first gear and a second gear. The driving gear is arranged on a driving shaft in a sliding mode. The first gear and the second gear are opposite in rotation direction. The shifting mechanism comprises a fixed plate. The shifting fork comprises two shifting fork rods symmetrically arranged on the same side and a stop rod located on the other side. The two shifting fork rods are located on the outer sides of the two ends of the driving gear respectively. The stop rod can be connected with first stop mechanisms. A screw and a manual stop mechanism are arranged at one end of the driving shaft. A thread sleeve connected with one end of a bent rod is in threaded connection with the screw in a sleeving mode. The two first stop mechanisms are arranged on the fixed plate. A ferrule rod is arranged on the part, between the two first stop mechanisms, of the fixed plate. After penetrating through a ferrule on the ferrule rod, a soft rope connected with the free end of the bent rod is divided into two strands which are each connected with one stop mechanism. The two ends of a first spring are connected with the free end of the bent rod and the shifting fork respectively.
Description
Technical field
The present invention relates to a kind of transmission switching mechanism, particularly relate to a kind of manually operated monocyclic-start mechanism.
Background technique
The mode of transmission mapping mode many employings Frequency Converter Control motor of modern power mechanism is carried out, the rotating speed of Frequency Converter Control motor and turning to of control motor, makes motor export very flexible to the speed of conveyer.But common frequency variator is when output low frequency to the voltage compensation Shortcomings of motor, and the torque magnification of motor is inadequate, causes the output torque of motor to decline, and drives load capacity unstable.Therefore, under the occasion that low cruise, power demand are higher, still need by retarder.The power that motor exports, while retarder slows down, can increase torque.But situation about frequently cut off needing outputting power, frequently commutating, this kind of device just can only be realized by the frequent start-stop of motor, frequent clockwise and anticlockwise switching.Long-Time Service, is unfavorable for the normal operation of motor.Therefore need to design a set of mechanical transmission mechanism, when motor and retarder operate continually and steadily, realize the function such as the frequent commutation of outputting power, frequent cut-out.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, the mechanism of moving in circles that a kind of spring force excites is provided.
For achieving the above object, the technical solution used in the present invention is: a kind of manually operated monocyclic-start mechanism, comprising: the driving mechanism be connected by shift fork and toggle mechanism, be is characterized in that,
-described driving mechanism can drive actuation gear to rotate and reverse;
-described toggle mechanism comprises fixed plate, described shift fork comprises the lever being positioned at symmetrically arranged two shifting fork bars in the same side and being positioned at opposite side, shifting fork bar described in two lays respectively at outside the two ends of actuation gear, described lever can be connected the first shut-down mechanism, described live axle one end is provided with screw rod, and the swivel nut thread bush connecting knee one end is connected on described screw rod; Described fixed plate is provided with two the first shut-down mechanisms, fixed plate in the middle of first shut-down mechanism described in two is provided with lasso bar and manual shut-down mechanism, the tightrope that described knee free end connects is by after the lasso on lasso bar, be divided into two strands and respectively connect first shut-down mechanism, the first both ends of the spring connects described knee free end and described shift fork respectively.
In a preferred embodiment of the present invention, described first shut-down mechanism comprises one end with the locking lever of sphenocephaly and second spring, the sphenocephaly of described locking lever stretches out outside described fixed plate face, outside another face of stretching out described fixed plate of sheathed second spring of the described locking lever the other end, described second both ends of the spring is separately fixed on described fixed plate and locking lever.
In a preferred embodiment of the present invention, described sphenocephaly comprises a sphenoid surface and a right-angle surface, described right-angle surface and described lever axis being parallel.
In a preferred embodiment of the present invention, the sphenoid surface on the first shut-down mechanism described in two is oppositely arranged; Sphenoid surface on sphenoid surface on described manual shut-down mechanism and one of them the first shut-down mechanism is oppositely arranged.
In a preferred embodiment of the present invention, the end of described tightrope connects the locking lever end on described first shut-down mechanism, and the locking lever end on described manual shut-down mechanism is provided with handle.
In a preferred embodiment of the present invention, described shift fork is along described fixed plate axial sliding movement, and described fixed plate axis is parallel with described drive axis.
In a preferred embodiment of the present invention, the helical pitch of described screw rod is greater than the distance described in two between first shut-down mechanism.
In a preferred embodiment of the present invention, the first shut-down mechanism described in two is respectively near the first gear and the second gear.
In a preferred embodiment of the present invention, described actuation gear feather key is arranged on described live axle, described actuation gear displacement distance on the feather key of live axle be namely described first gear and described second gear shaft to distance.
In a preferred embodiment of the present invention, described driving mechanism comprises first gear and the second gear that can engage with actuation gear respectively, and described actuation gear is slidably arranged on live axle, and described first gear is contrary with described second gear sense of rotation.
The invention solves the defect existed in background technique, the present invention possesses following beneficial effect:
(1) by the action of toggle mechanism, actuation gear can be shifted one's position between the first gear and the second gear, serve the effect of conversion actuation gear engagement object, simultaneously because the first gear is contrary with the second gear sense of rotation, ensure that each actuation gear conversion engagement object rear drive shaft all converts sense of rotation.
(2) sense of rotation of live axle and the direction of stirring of toggle mechanism form linkage structure just, when actuation gear and the first gears meshing, toggle mechanism driven shaft drives the tendency and power that toggle mechanism are had actuation gear is allocated to the second gear, and final actuation gear departs from the first gear, and inertia and the elastic potential energy of the first spring that is stretched between knee and shift fork is relied on to drive and the second gears meshing; Otherwise when actuation gear and the second gears meshing, toggle mechanism can make actuation gear reversing motion.
(3) structure of feather key can ensure that the clip existed between actuation gear and live axle along live axle circumference limits on the one hand, ensure actuation gear can not circumferentially with live axle generation relative movement, on the other hand actuation gear can sliding axially along live axle, ensures that actuation gear moves between the first gear and the second gear.
(4) two shifting fork bars lay respectively at actuation gear both sides, and actuation gear can under the driving of shift fork, along live axle axial motion.
(5) structure of screw rod and swivel nut is the major impetus source of toggle mechanism, and the elastic potential energy of the first spring store is also stored gradually by the motion of screw rod swivel nut simultaneously.
(6) when the first gear engages with actuation gear, swivel nut drives knee away from actuation gear, first spring is stretched to a certain degree to be pulled by tightrope and excites the first shut-down mechanism, lever departs from the constraint of locking lever, now shift fork is pulled by spring and drives actuation gear to depart from the first gear and engages, and towards the second gear movement, utilize inertia and the second gears meshing; Now the second gear driven actuation gear counterrotating makes swivel nut also reversing motion on screw rod, moves towards the direction close to actuation gear, with this reciprocation cycle.
(7) when actuation gear and the first gears meshing, first shut-down mechanism limits lever, the first spring connecting knee is stretched, and tighten tightrope and pull locking lever to excite lever to depart from right-angle surface constraint gradually namely can to make shift fork rapidly towards the second gear one lateral movement, and lever be fettered by the first shut-down mechanism of opposite side; Then when the second gear drive counterrotating, the symmetrical above-mentioned athletic performance of opposite side mechanism inverted repeat, and constantly circulate.
(8) before actuation gear departs from the first gears meshing, first spring is in extended state, then the first shut-down mechanism excites shift fork to move, spring bounces back rapidly, now actuation gear and the second gears meshing, swivel nut reversing motion, two ends of the first spring are due to knee and the crossbar transistion of shift fork position, flexible both ends of the spring is respectively followed and is exchanged as position, and under the continuation campaign of swivel nut, negative drawing first spring.
The sphenoid surface of (9) two the first shut-down mechanisms is oppositely arranged, and such lever can when moving towards sphenoid surface at a relatively high speed, and lever can easily be crossed from sphenoid surface, is blocked by right-angle surface; When crossing sphenoid surface, lever axially can press locking lever towards locking lever, makes locking lever can not block lever completely.
The second spring on (10) first shut-down mechanisms can be instant will produce displacement locking lever reset.
(11) tightrope that share split is arranged can ensure that two locking levers on two the first shut-down mechanisms all can synchronously be pulled, lever can outside easily from the movement outside of a sphenoid surface to another sphenoid surface, after locking lever resets, lever is blocked by the restriction of another locking lever just.
(12) the lasso bar be provided with can keep can not arbitrarily be wound around between two tightropes, and tightrope can not be too slack and undisciplined simultaneously; Tightrope is by one end connecting bending boom end, and the other end of share split respectively connects a stop structure, realizes guiding tightrope to transmit the effect of pulling force.
Spacing between (13) two shifting fork bars is greater than the axial length of actuation gear, provides heterodromous inertia to cushion can to the motion of actuation gear.
(14) structure of bolt rod driving swivel nut, and then swivel nut provides power resources for toggle mechanism, because the sense of rotation of screw rod is relevant with the object that actuation gear engages, so, the moving direction of swivel nut is relevant with the sense of rotation of live axle, and the sense of rotation of live axle is subject to the control of toggle mechanism; Such said process just forms interactional cyclic motion process, and toggle mechanism and driving mechanism constantly affect continuous loop control.
(15) lasso bar and two the first shut-down mechanisms are together arranged on same fixed plate, ensure that the stability of tightrope power transmission; And shift fork along the axial-movement of fixed plate, can form fixing reciprocating motion paths.
(16) locking lever on manual shut-down mechanism can pull up by handle, and being manually stopped the lever that the right-angle surface in mechanism blocks like this can depart from constraint, and shift fork just can continue to move left and right, only otherwise pulling up mechanism just only can do monocyclic motion.
(17) lever can be blocked in the position of actuation gear just between the first gear and the second gear by the position that manual shut-down mechanism is arranged, and now actuation gear departs from engagement.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the three-dimensional structure diagram one of the preferred embodiments of the present invention actuation gear and the first gear engagement states;
Fig. 2 is the three-dimensional structure diagram two of the preferred embodiments of the present invention actuation gear and the first gear engagement states;
Fig. 3 is the three-dimensional structure diagram of the preferred embodiments of the present invention actuation gear and the second gear engagement states;
Fig. 4 is the three-dimensional structure diagram of the toggle mechanism of the preferred embodiments of the present invention;
In figure: 1, the first gear, the 2, second gear, 3, actuation gear, 4, live axle, 5, feather key, 6, fixed plate, 7 shift forks, 8, shifting fork bar, 9, lever, 10, screw rod, 11, swivel nut, 12, knee, the 13, first spring, 14, tightrope, 15, lasso bar, 16, lasso, the 17, second spring, 18, the first shut-down mechanism, 19, locking lever, 21, sphenocephaly, 22, sphenoid surface, 23, right-angle surface, 24, manual shut-down mechanism, 25, handle, 26, bolt locking devices.
Embodiment
The present invention is further detailed explanation in conjunction with the accompanying drawings and embodiments now, and these accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As Figure 1-4, a kind of manually operated monocyclic-start mechanism, being comprised: the driving mechanism be connected by shift fork 7 and toggle mechanism,
-described driving mechanism comprises the actuation gear 3 that can engage with the first gear 1 and the second gear 2 respectively, and described actuation gear 3 is slidably arranged on live axle 4, and described first gear 1 is contrary with described second gear 2 sense of rotation;
-described toggle mechanism comprises fixed plate 6, described shift fork 7 comprises the lever 9 being positioned at symmetrically arranged two shifting fork bars 8 in the same side and being positioned at opposite side, shifting fork bar 8 described in two lays respectively at outside the two ends of described actuation gear 3, described lever 9 can be connected the first shut-down mechanism 18, two shifting fork bars 8 lay respectively at actuation gear 3 both sides, actuation gear 3 can under the driving of shift fork 7, along live axle 4 axial motion.
Described live axle 4 one end is provided with screw rod 10, and swivel nut 11 thread bush connecting knee 12 one end is connected on described screw rod 10; The helical pitch of screw rod 10 is greater than the distance described in two between first shut-down mechanism 18.The structure of screw rod 10 and swivel nut 11 is major impetus sources of toggle mechanism, and the elastic potential energy that the first spring 13 stores simultaneously is also stored gradually by the motion of screw rod 10 swivel nut 11.
Described fixed plate 6 is provided with two the first shut-down mechanisms 18, first shut-down mechanism 18 described in two is respectively near the first gear 1 and the second gear 2, fixed plate 6 in the middle of first shut-down mechanism 18 described in two is provided with lasso bar 15, the tightrope 14 that described knee 12 free end connects is by after the lasso 16 on lasso bar 15, be divided into two strands and respectively connect first shut-down mechanism 18, the end of tightrope 14 connects locking lever 19 end, the lasso bar 15 be provided with can keep can not arbitrarily be wound around between two tightropes 14, and tightrope 14 can not be too slack and undisciplined simultaneously; Tightrope 14 connects knee 12 end by one end, and the other end of share split respectively connects a stop structure, realizes guiding tightrope 14 to transmit the effect of pulling force.The tightrope 14 that share split is arranged can ensure that two locking levers 19 on two the first shut-down mechanisms 18 all can synchronously be pulled, lever 9 can outside easily from the movement outside of a sphenoid surface 22 to another sphenoid surface 22, after locking lever 19 resets, lever 9 is blocked by the restriction of another locking lever 19 just.
Lasso bar 15 and two the first shut-down mechanisms 18 are together arranged on same fixed plate 6, ensure that the stability of tightrope 14 power transmission; And shift fork 7 along the axial-movement of fixed plate 6, can form fixing reciprocating motion paths.
First spring 13 two ends connect described knee 12 free end and described shift fork 7 respectively.
By the action of toggle mechanism, actuation gear 3 can be shifted one's position between the first gear 1 and the second gear 2, serve the effect that conversion actuation gear 3 engages object, simultaneously because the first gear 1 is contrary with the second gear 2 sense of rotation, ensure that each actuation gear 3 conversion engagement object rear drive shaft 4 all converts sense of rotation.
The sense of rotation of live axle 4 and the direction of stirring of toggle mechanism form linkage structure just, when actuation gear 3 engages with the first gear 1, toggle mechanism driven shaft 4 drives the tendency and power that toggle mechanism are had actuation gear 3 is allocated to the second gear 2, and final actuation gear 3 departs from the first gear 1, and rely on inertia and the elastic potential energy of the first spring 13 that is stretched between knee 12 with shift fork 7 to drive to engage with the second gear 2; Otherwise when actuation gear 3 engages with the second gear 2, toggle mechanism can make actuation gear 3 reversing motion.
The second spring 17 on first shut-down mechanism 18 can be instant reset producing the locking lever 19 of displacement.
First shut-down mechanism 18 comprises one end with the locking lever 19 of sphenocephaly 21 and second spring 17, the sphenocephaly 21 of locking lever 19 stretches out outside described fixed plate 6 one faces, outside another face of stretching out fixed plate 6 of sheathed second spring 17 of locking lever 19 the other end, the second spring 17 two ends are separately fixed on fixed plate 6 and locking lever 19.
Sphenocephaly 21 comprises a sphenoid surface 22 and a right-angle surface 23, described right-angle surface 23 and described lever 9 axis being parallel.
Described in two, the sphenoid surface 22 of sphenocephaly 21 is oppositely arranged, and such lever 9 can when moving towards sphenoid surface 22 at a relatively high speed, and lever 9 can easily be crossed from sphenoid surface 22, is blocked by right-angle surface 23; When crossing sphenoid surface 22, lever 9 axially can press locking lever 19 towards locking lever 19, makes locking lever 19 can not block lever 9 completely.
Shift fork 7 along described fixed plate 6 axial sliding movement, described fixed plate 6 axis and described live axle 4 axis being parallel.
Actuation gear 3 feather key 5 is arranged on described live axle 4, and namely described actuation gear 3 displacement distance on the feather key 5 of live axle 4 be the distance of described first gear 1 and described second gear 2 axis.The structure of feather key 5 can ensure that the clip existed between actuation gear 3 and live axle 4 along live axle 4 circumference limits on the one hand, ensure that actuation gear 3 circumferentially with live axle 4, relative movement can not occur, on the other hand actuation gear 3 can sliding axially along live axle 4, ensures that actuation gear 3 moves between the first gear 1 and the second gear 2.
Spacing described in two between shift fork 7 is greater than the axial length of described actuation gear 3, provides heterodromous inertia to cushion can to the motion of actuation gear 3.
When the first gear 1 engages with actuation gear 3, swivel nut 11 drives knee 12 away from actuation gear 3, first spring 13 is stretched to a certain degree to be pulled by tightrope 14 and excites the first shut-down mechanism 18, lever 9 departs from the constraint of locking lever 19, now shift fork 7 is pulled by spring and drives actuation gear 3 to depart from the first gear 1 and engages, and move towards the second gear 2, utilize inertia to engage with the second gear 2; Now the second gear 2 drives actuation gear 3 counterrotating to make swivel nut 11 also reversing motion on screw rod 10, moves towards the direction close to actuation gear 3, with this reciprocation cycle.
When actuation gear 3 engages with the first gear 1, first shut-down mechanism 18 limits lever 9, the first spring 13 connecting knee 12 is stretched, and tighten tightrope 14 and pull locking lever 19 to excite lever 9 to depart from right-angle surface 23 gradually to fetter and namely can make shift fork 7 rapidly towards the second gear 2 one lateral movement, and lever 9 is fettered by the first shut-down mechanism 18 of opposite side; Then when the second gear 2 drives counterrotating, the symmetrical above-mentioned athletic performance of opposite side mechanism inverted repeat, and constantly circulate.
Before actuation gear 3 departs from the first gear 1 engagement, first spring 13 is in extended state, then the first shut-down mechanism 18 excites shift fork 7 to move, spring bounces back rapidly, and now actuation gear 3 engages with the second gear 2, swivel nut 11 reversing motion, two ends of the first spring 13 are due to knee 12 and shift fork 7 position crossbar transistion, flexible both ends of the spring is respectively followed and is exchanged as position, and under the continuation campaign of swivel nut 11, negative drawing first spring 13.
Locking lever 19 the other end of manual shut-down mechanism 24 is provided with handle 25, locking lever 19 on manual shut-down mechanism 24 can pull up by handle 25, be manually stopped the lever 9 that the right-angle surface 23 in mechanism 24 blocks like this and can depart from constraint, shift fork 7 just can continue to move left and right, only otherwise pulling up mechanism just only can do monocyclic motion, lever 9 can be blocked in the position of actuation gear 3 just between the first gear 1 and the second gear 2 by the position that manual shut-down mechanism 24 is arranged, and now actuation gear 3 departs from engagement.
Sphenoid surface 22 on two first shut-down mechanisms 18 is oppositely arranged; So if there is no manual shut-down mechanism 24 when, lever 9 can move away from the position between two first shut-down mechanisms 18 along sphenoid surface 22, but lever 9 between two first shut-down mechanisms 18 beyond position just cannot cross right-angle surface 23 and enter between two first shut-down mechanisms 18.
As illustrated in fig. 1 and 2, sphenoid surface 22 on manual shut-down mechanism 24 is oppositely arranged with the sphenoid surface 22 on first shut-down mechanism 18 on right side, lever 9 is merely able to the left side reaching manual shut-down mechanism 24 from the right side of manual shut-down mechanism 24 sphenoid surface 22 crossed manual shut-down mechanism 24, but pin 9 can not reach the right side of manual shut-down mechanism 24 from the left side of manual shut-down mechanism 24 right-angle surface 23 of crossing manual shut-down mechanism 24.
Knee 12 is provided with a bolt locking devices 26 in its corner, knee 12 part parallel with live axle 4 can be nested in the endoporus of bolt locking devices 26, and within it slide in hole, the bolt on bolt locking devices 26 controls degree of tightness by being screwed into back-out; By regulating knee 12 and the relative position of bolt locking devices 26, the position adjustment of knee 12 pairs of shifting fork bars 8 can be realized, so as to adjust shifting fork bar 8 pairs of actuation gears stir opportunity.
Above according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, related personnel in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine technical scope according to right.
Claims (10)
1. a manually operated monocyclic-start mechanism, comprising: the driving mechanism be connected by shift fork and toggle mechanism, be is characterized in that,
-described driving mechanism can drive actuation gear to rotate and reverse;
-described toggle mechanism comprises fixed plate, described shift fork comprises the lever being positioned at symmetrically arranged two shifting fork bars in the same side and being positioned at opposite side, shifting fork bar described in two lays respectively at outside the two ends of actuation gear, described lever can be connected the first shut-down mechanism, described live axle one end is provided with screw rod, and the swivel nut thread bush connecting knee one end is connected on described screw rod; Described fixed plate is provided with two the first shut-down mechanisms, fixed plate in the middle of first shut-down mechanism described in two is provided with lasso bar and manual shut-down mechanism, the tightrope that described knee free end connects is by after the lasso on lasso bar, be divided into two strands and respectively connect first shut-down mechanism, the first both ends of the spring connects described knee free end and described shift fork respectively.
2. the manually operated monocyclic-start mechanism of one according to claim 1, it is characterized in that: described first shut-down mechanism comprises one end with the locking lever of sphenocephaly and second spring, the sphenocephaly of described locking lever stretches out outside described fixed plate face, outside another face of stretching out described fixed plate of sheathed second spring of the described locking lever the other end, described second both ends of the spring is separately fixed on described fixed plate and locking lever.
3. the manually operated monocyclic-start mechanism of one according to claim 2, is characterized in that: described sphenocephaly comprises a sphenoid surface and a right-angle surface, described right-angle surface and described lever axis being parallel.
4. the manually operated monocyclic-start mechanism of one according to claim 3, is characterized in that: the sphenoid surface on the first shut-down mechanism described in two is oppositely arranged; Sphenoid surface on sphenoid surface on described manual shut-down mechanism and one of them the first shut-down mechanism is oppositely arranged.
5. the manually operated monocyclic-start mechanism of one according to claim 2, is characterized in that: the end of described tightrope connects the locking lever end on described first shut-down mechanism, and the locking lever end on described manual shut-down mechanism is provided with handle.
6. the manually operated monocyclic-start mechanism of one according to claim 1, is characterized in that: described shift fork is along described fixed plate axial sliding movement, and described fixed plate axis is parallel with described drive axis.
7. the manually operated monocyclic-start mechanism of one according to claim 1, is characterized in that: the helical pitch of described screw rod is greater than the distance described in two between first shut-down mechanism.
8. the manually operated monocyclic-start mechanism of one according to claim 1, is characterized in that: the first shut-down mechanism described in two is respectively near the first gear and the second gear.
9. the manually operated monocyclic-start mechanism of one according to claim 1, it is characterized in that: described actuation gear feather key is arranged on described live axle, described actuation gear displacement distance on the feather key of live axle be namely described first gear and described second gear shaft to distance.
10. the manually operated monocyclic-start mechanism of one according to claim 1, it is characterized in that: described driving mechanism comprises first gear and the second gear that can engage with actuation gear respectively, described actuation gear is slidably arranged on live axle, and described first gear is contrary with described second gear sense of rotation.
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| CN201510573888.2A CN105090389B (en) | 2015-09-11 | 2015-09-11 | A kind of manually operated monocyclic-start mechanism |
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| CN105090389B (en) | 2017-06-06 |
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