CN103836086B - A kind of clutch system open in usual of walk-behind type running machine - Google Patents
A kind of clutch system open in usual of walk-behind type running machine Download PDFInfo
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- CN103836086B CN103836086B CN201410115812.0A CN201410115812A CN103836086B CN 103836086 B CN103836086 B CN 103836086B CN 201410115812 A CN201410115812 A CN 201410115812A CN 103836086 B CN103836086 B CN 103836086B
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Abstract
The invention discloses a kind of clutch system open in usual of walk-behind type running machine, comprise running machine body, clutch operation handle, clutch handle seat, clutch cable, cable sleeve, clutch yoke armshaft assembly, clutch yoke, normally open clutch assembly, energy storage device and force often to drive damping differential mechanism; Described clutch handle seat is installed on the handrail of running machine body, clutch operation handle is rotatably connected on clutch handle seat, described clutch operation handle is shaping by stamped metal sheets, walking machine body is also provided with an energy storage device, main shaft is also provided with a pressure and often drives damping differential mechanism when normally open clutch assembly is promoted to enter open mode by release spring, clutch yoke can be promoted and drive stop push-plate to move towards immobilising friction dish direction.Stability of the present invention is high, and risk factor is low, and operational comfort is good.
Description
Technical field
The present invention relates to a kind of walk-behind type running machine, particularly relate to a kind of clutch system open in usual of walk-behind type running machine (Work machine).
Background technique
Clutch is totally divided into two kinds: Normally closed type and open in usual.All uses Normally closed type clutch (as: automobile, motorcycle, tractor and all kinds of big-and-middle-sized portable agricultural operation are mechanical) at present moving in (walking) class matured product, the common ground of such product operation is man-machine entirety colleague (car), machine is only had to stop row, man-machine ability safe separating, therefore the movement of machine is all carried out under human users controls.And this clutch mode is when for Miniature walking mobile operation machine; but the safety defect that existence one is fatal; because such Work machine mode of operation is the hand steered colleague of human locomotion; when occurring man-machinely very easily being separated under personnel have little time the unusual condition of shutting down; now; the machine of Normally closed type clutch is used not depart from power transmission; and to be man-machinely separated; continuation unordered under the state controlled without human users is moved by machine, and such runaway condition forms serious security threat to the personnel of surrounding and material property.
Use clutch mode open in usual can thoroughly avoid above-mentioned security threat, but two of maturation kinds of normally open clutch exist the narrow limitation of application area, one is electromagnetic type clutch; Another kind is centrifugal clutching, because portable power source mechanism huge and continuous service time is of short duration etc., factor is only limitted to non-moving machine (as: lathe etc. of fixed position) to electromagnetic type clutch mode, centrifugal clutching mode due to driving torque non-constant with rotation speed change, application also limited to.And another kind hold vertical compression normally open clutch due to without grip energy storage conversion load subtract to, hand-held operation is required great effort very much, without actual application value.Therefore be applied to such Work machine in the urgent need to a kind of hand guided mechanical normally open clutch and control operation system, conscientiously realize hand from the secure mode of operation of namely stopping.
Summary of the invention
For prior art above shortcomings, object of the present invention be just to provide a kind of by energy storage conversion load subtract to, highlight the clutch system open in usual of the walk-behind type running machine of easy manipulation and Security, effectively can solve existing running machine poor stability, risk factor is high, the defect that operational comfort is low.
To achieve these goals, the technical solution used in the present invention is such: a kind of clutch system open in usual of walk-behind type running machine, comprises running machine body, clutch operation handle, clutch handle seat, clutch cable, cable sleeve, clutch yoke armshaft assembly, clutch yoke, normally open clutch assembly, energy storage device and forces often to drive damping differential mechanism; Described running machine body has handrail, gear graduation transmission case, motor and walking wheel, described normally open clutch assembly is installed in the gear graduation transmission case of running machine body, and the engine output shaft on running machine body is connected with main shaft coaxial line after this normally open clutch assembly; Described clutch yoke armshaft assembly comprises the axostylus axostyle of clutch arm and clutch arm one end, and the other end of described clutch arm is connected with cable sleeve; Described axostylus axostyle is mutually vertical with clutch arm, and this axostylus axostyle is fixedly connected with clutch yoke by bearing pin after running through clutch yoke, and two ends and the gear graduation transmission case of described axostylus axostyle are rotationally connected, and two of described clutch yoke fork pin are positioned at the both sides of main shaft; Described clutch handle seat is installed on the handrail of running machine body, clutch operation handle is rotatably connected on clutch handle seat, the two ends of described cable sleeve are respectively equipped with a drag-line seat, wherein, the drag-line seat of cable sleeve one end is fixedly connected with clutch handle seat, and the drag-line seat of the other end and clutch yoke armshaft assembly are rotationally connected away from one end of clutch yoke; It is characterized in that:
Described clutch operation handle is shaping by stamped metal sheets, makes to form a bar shaped abdominal cavity in clutch operation handle, and one end that clutch operation handle is connected with handrail is run through in this abdominal cavity;
Walking machine body is also provided with an energy storage device, and described energy storage device comprises energy storage spring fixed base, energy storage spring telescopic stand and the energy storage spring between energy storage spring fixed base and energy storage spring telescopic stand; In the abdominal cavity of clutch operation handle, be provided with clutch lacing wire pin, one end of described clutch cable is connected with clutch lacing wire pin, and the other end is connected together with energy storage spring telescopic stand through after Guy wire guide-tube, energy storage spring fixed base, energy storage spring successively;
Main shaft is also provided with a pressure and often drives damping differential mechanism, and the both sides that damping differential mechanism and normally open clutch lay respectively at clutch yoke are often opened in this pressure; Described pressure is often driven damping differential mechanism and is comprised stop push-plate and immobilising friction dish, and described immobilising friction dish has the internal spline matched with the external splines on main shaft, and this immobilising friction dish is fixedly connected with by spline fitted with main shaft; Described stop push-plate is positioned at pressure and often opens the side of damping differential mechanism near clutch yoke, when normally open clutch assembly is promoted to enter open mode by release spring, can promote clutch yoke and drive stop push-plate to move towards immobilising friction dish direction.
Further, described immobilising friction dish and all T-shaped nested structure of stop push-plate, and stop push-plate is set on immobilising friction dish.
Further, described stop push-plate both sides corresponding with the fork foot of shift fork are flat side's tangent plane structure, and this flat side's tangent plane structure is placed in the fork pin of clutch yoke, thus can limit stop push-plate and rotate when stop works.
Compared with prior art, tool of the present invention has the following advantages:
1. be provided with clutch lacing wire pin to draw as clutch cable move starting point in clutch operation handle abdominal cavity, press down in process that clutch cable pulls holding, a variable perpendicular to the component on clutch operation handle, and diminish gradually, thus make to be more prone in the process of holding with a firm grip, and do not need too large grip in the process of clutch operating handle of holding with a firm grip;
2. energy storage spring pulls the compressive strain of displacement process medi-spring at clutch cable, load increases gradually along with compression deformation of the spring, it is overlapping that the holding of this process and clutch operation handle presses down the process that component diminishes gradually, formed the contrary power overlap of two stressed trend subtract to, thus the actual grip of clutch operation handle is diminished and without obviously rising and falling, exerts oneself in clutch handle process of holding with a firm grip more steady; And the actual grip of clutch when closing on clutch operation handle is less than the grip started when holding with a firm grip, conscientiously ensure that the slim and graceful, level and smooth of feel grip with evenly, operate and comfortablely do not feel fatigue, tool is practicability widely;
3. force often to open the energy storage spring off-load under hand luxuriant closing operation handle state of damping differential mechanism, release spring oppositely promotes clutch yoke and returns, drive stop push-plate to move towards immobilising friction dish direction and produce backpressure F3, thus formation and running machine retain a reverse friction differential of inertia rotating speed after departing from driving engine, realize forcing removal to retain inertia rotating speed, guarantee that separate men from machines hand is from namely stopping, thoroughly overcome potential safety hazard, social benefit is remarkable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of normally open clutch assembly;
Fig. 3 is the mounting structure schematic diagram of clutch operation handle;
Fig. 4 is the structural representation of energy storage device;
Fig. 5 often opens damping differential mechanism structural representation for forcing;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the assembly structure schematic diagram of clutch operation handle, clutch yoke, clutch yoke armshaft assembly and energy storage device.
In figure: 1-clutch operation handle, 2-clutch handle seat, 3-clutch cable, 4-cable sleeve, 41-drag-line seat, 5-clutch yoke armshaft assembly, 6-clutch yoke, 7-normally open clutch assembly, 71-clutch housing, 72-flower keyboard, 73-friction plate, the outer square tooth driven hub of 74-clutch, 75-internal moment tooth driven plate, 76-clutch lift slab, 77-clutch internal moment tooth pallet, 78-release spring, 79-clutch pads, 8-energy storage device, 81-energy storage spring fixed base, 82-energy storage spring telescopic stand, 83-energy storage spring, 9-main shaft, 101-immobilising friction dish, 102-stop push-plate.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment: see Fig. 1 to Fig. 7, a clutch system open in usual for walk-behind type running machine, comprises running machine body, clutch operation handle 1, clutch handle seat 2, clutch cable 3, cable sleeve 4, clutch yoke armshaft assembly 5, clutch yoke 6, normally open clutch assembly 7, energy storage device 8 and forces often to drive damping differential mechanism.Described running machine body has handrail, gear graduation transmission case, motor and walking wheel, described normally open clutch assembly 7 is installed in the gear graduation transmission case of running machine body, the engine output shaft on running machine body after this normally open clutch assembly 7 with main shaft 9(driven shaft) coaxial line is connected.
Described normally open clutch assembly 7 comprises clutch housing 71 assembly, clutch pads 79, clutch internal moment tooth pallet 77, release spring 78, friction plate 73, internal moment tooth driven plate 75, clutch lift slab 76, clutch outer square tooth driven hub 74, bearing sleeve and one direction thrust bearing.Described clutch housing 71 assembly comprises clutch housing 71 and flower keyboard 72, and it is connected together with coordinating of the external splines on engine output shaft by the internal spline on flower keyboard 72; The housing of described clutch housing 71 axially offers several long strip teeth groove (being generally 8) along it, and described long strip teeth groove is uniformly distributed around clutch housing for 71 1 weeks; Described friction plate 73 is multi-disc, and its outward edge has the outer square tooth matched with the long strip teeth groove on clutch housing 71; Friction plate 73 is cooperatively interacted by the long strip teeth groove of outer square tooth and clutch housing 71 and links together, and friction plate 73 can move back and forth along long strip teeth groove.The outer square tooth driven hub 74 of described clutch and the main shaft 9(driven shaft in running machine body) be slidably connected with coordinating of external splines by internal spline, the outer square tooth driven hub 74 of clutch is axially arranged with several outer double wedges along it; The internal spline that the outer double wedge that described clutch internal moment tooth pallet 77 inner edges is axially arranged with square tooth driven hub 74 outside several and clutch along it matches, and the outer double wedge of the outer square tooth driven hub 74 of clutch can move back and forth along internal spline; Described internal moment tooth driven plate 75 is also multi-disc, and be alternately distributed with friction plate 73, its inside edge has the internal moment tooth that the outer double wedge with clutch in outer square tooth driven hub 74 matches, internal moment tooth driven plate 75 is cooperatively interacted by the outer double wedge of square tooth driven hub 74 outside internal moment tooth and clutch and links together, and internal moment tooth driven plate 75 can reciprocate along outer double wedge.The outer square tooth driven hub 74 of described clutch lift slab 76 and clutch is connected by screw fastening, and is fastenedly connected with bearing sleeve and one direction thrust bearing in the lump pressing.Described clutch internal moment tooth pallet 77 is connected with clutch lift slab 76 by bearing pin and wild card; Described release spring 78 is many, and between clutch lift slab 76 and clutch internal moment tooth pallet 77; During concrete enforcement, described clutch internal moment tooth pallet 77 has several directional post, and described directional post is through the outer square tooth driven hub 74 of clutch, and release spring 78 is set on described directional post, and its two ends are connected with clutch lift slab 76 with clutch internal moment tooth pallet 77 respectively.Described clutch pads 79 between clutch housing 71 and clutch internal moment tooth pallet 77, and by bolt and deep groove ball bearing and the main shaft 9(driven shaft on running machine body) be fixedly connected with.
Described clutch yoke armshaft assembly 5 comprises the axostylus axostyle of clutch arm and clutch arm one end, and the other end of described clutch arm is connected with cable sleeve 4; Described axostylus axostyle is mutually vertical with clutch arm, and this axostylus axostyle is fixedly connected with clutch yoke 6 by bearing pin after running through clutch yoke 6, and two ends and the gear graduation transmission case of described axostylus axostyle are rotationally connected, and two of described clutch yoke 6 fork pin are positioned at the both sides of main shaft 9.When cable sleeve 4 drives clutch yoke armshaft assembly 5 around spindle rotation, clutch yoke 6 is with clutch yoke armshaft assembly 5 synchronous axial system, and it is closed to promote normally open clutch assembly 7.
Described clutch handle seat 2 is installed on the handrail of running machine body, clutch operation handle 1 is rotatably connected on clutch handle seat 2, the two ends of described cable sleeve 4 are respectively equipped with a drag-line seat 41, wherein, the drag-line seat 41 of cable sleeve 4 one end is fixedly connected with clutch handle seat 2, and the drag-line seat 41 of the other end is rotationally connected with clutch yoke armshaft assembly 5 one end away from clutch yoke 6.Described clutch operation handle 1 is shaping by stamped metal sheets, makes to form a bar shaped abdominal cavity in clutch operation handle 1, and one end that clutch operation handle 1 is connected with handrail is run through in this abdominal cavity; During concrete enforcement, this clutch operation handle 1 is shaping by a trapezoidal stamped metal sheets.
Walking machine body is also provided with an energy storage device 8, and described energy storage device 8 comprises energy storage spring fixed base 81, energy storage spring telescopic stand 82 and the energy storage spring between energy storage spring fixed base 81 and energy storage spring telescopic stand 82 83; Described energy storage spring fixed base 81 is fixedly connected with running machine body by bolt, energy storage spring telescopic stand 82 is positioned at immediately below energy storage spring fixed base 81, thus energy storage spring 83 is vertically arranged between energy storage spring telescopic stand 82 and energy storage spring fixed base 81.Be provided with clutch lacing wire pin in the abdominal cavity of clutch operation handle 1, one end of described clutch cable 3 is connected with clutch lacing wire pin, the other end successively through Guy wire guide-tube, energy storage spring fixed base 81, after energy storage spring 83 and energy storage spring telescopic stand 82 be connected together.
Main shaft 9 is also provided with a pressure and often drives damping differential mechanism, and the both sides that damping differential mechanism and normally open clutch lay respectively at clutch yoke 6 are often opened in this pressure.Described pressure is often driven damping differential mechanism and is comprised stop push-plate 102 and immobilising friction dish 101, and described immobilising friction dish 101 has the internal spline matched with the external splines on main shaft 9, and this immobilising friction dish 101 is fixedly connected with by spline fitted with main shaft 9; Described stop push-plate 102 is positioned at pressure and often opens the side of damping differential mechanism near clutch yoke 6, when normally open clutch assembly 7 is promoted to enter open mode by release spring 78, clutch yoke 6 can be promoted and drive stop push-plate 102 to move towards immobilising friction dish 101 direction.Described immobilising friction dish 101 is rubbing surface near a side of stop push-plate 102, thus produces when stop push-plate 102 and immobilising friction dish 101 are fitted and rub.
Described immobilising friction dish 101 and all T-shaped nested structure of stop push-plate 102, and stop push-plate 102 is set on immobilising friction dish 101; During concrete enforcement, automatic push-plate is arranged on immobilising friction dish 101 by jump ring, and stop push-plate 102 can moving axially along immobilising friction dish 101.Described stop push-plate 102 both sides corresponding with the fork foot of shift fork are flat side's tangent plane structure, and this flat side's tangent plane structure is placed in the fork pin of clutch yoke 6, thus can limit stop push-plate 102 and rotate when stop works.
Closing course:
1. running machine is placed in random shift (being usually placed in neutral), ato unit, now friction plate is in internal moment tooth driven plate the normally open be separated under the effect of release spring, friction plate no-load idle running under clutch housing drives simultaneously;
2. running machine is placed in required gear, pinches lower clutch operation handle, clutch cable pulls the energy storage of displacement compression energy storage spring;
3., because the length of cable sleeve is fixed, therefore, while spring-compressed energy storage, cable sleeve clutch yoke armshaft assembly is rotated down dynamic;
4. clutch yoke armshaft assembly drives clutch yoke to rotate, clutch yoke is made to promote the outer square tooth driven hub of single direction thrust ball bearing, clutch lift slab and clutch, and then compress release spring simultaneously, make global displacement, and force the outer square tooth driven hub of clutch to compress internal moment tooth driven plate and friction plate;
5. fit after friction plate and internal moment tooth driven plate pressurized and produce friction torque, now engine output shaft drives clutch housing assembly to rotate, clutch housing is rotated by housing rectangle groove and friction plate edge rectangular teeth band movable friction plate and internal moment tooth driven plate, internal moment tooth driven plate drives the outer square tooth driven hub of clutch to rotate, the outer square tooth driven hub of clutch drives main shaft (driven shaft) to rotate by internal spline, and normally open clutch has closed.
Normal open procedure:
1. running machine body is after walking job state sets about to leave clutch operation handle, energy storage spring off-load, the stressed disappearance of clutch yoke armshaft assembly;
2. release spring promotes clutch lift slab, the outer square tooth driven hub of clutch, single direction thrust ball bearing is overall moves to clutch yoke direction, and drives clutch yoke to rotate backward;
3. friction plate is separated with internal moment tooth driven plate decompression, friction torque off-load, and friction plate is no-load idle running under clutch housing drives;
In clutch yoke counter rotation, promote stop push-plate move towards immobilising friction dish direction, make stop push-plate laminating immobilising friction dish produce a friction torque and form reverse friction differential, thus realizing damping stop, running machine body is out of service, thus realizes hand from namely stopping.
Finally it should be noted that, above embodiment is only in order to illustrate technological scheme of the present invention but not restriction technologies scheme, those of ordinary skill in the art is to be understood that, those are modified to technological scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (3)
1. a clutch system open in usual for walk-behind type running machine, comprises running machine body, clutch operation handle, clutch handle seat, clutch cable, cable sleeve, clutch yoke armshaft assembly, clutch yoke, normally open clutch assembly, energy storage device and forces often to drive damping differential mechanism; Described running machine body has handrail, gear graduation transmission case, motor and walking wheel, described normally open clutch assembly is installed in the gear graduation transmission case of running machine body, and the engine output shaft on running machine body is connected with main shaft coaxial line after this normally open clutch assembly; Described clutch yoke armshaft assembly comprises the axostylus axostyle of clutch arm and clutch arm one end, and the other end of described clutch arm is connected with cable sleeve; Described axostylus axostyle is mutually vertical with clutch arm, and this axostylus axostyle is fixedly connected with clutch yoke by bearing pin after running through clutch yoke, and two ends and the gear graduation transmission case of described axostylus axostyle are rotationally connected, and two of described clutch yoke fork pin are positioned at the both sides of main shaft; Described clutch handle seat is installed on the handrail of running machine body, clutch operation handle is rotatably connected on clutch handle seat, the two ends of described cable sleeve are respectively equipped with a drag-line seat, wherein, the drag-line seat of cable sleeve one end is fixedly connected with clutch handle seat, and the drag-line seat of the other end and clutch yoke armshaft assembly are rotationally connected away from one end of clutch yoke; It is characterized in that:
Described clutch operation handle is shaping by stamped metal sheets, makes to form a bar shaped abdominal cavity in clutch operation handle, and one end that clutch operation handle is connected with handrail is run through in this abdominal cavity;
Walking machine body is also provided with an energy storage device, and described energy storage device comprises energy storage spring fixed base, energy storage spring telescopic stand and the energy storage spring between energy storage spring fixed base and energy storage spring telescopic stand; In the abdominal cavity of clutch operation handle, be provided with clutch lacing wire pin, one end of described clutch cable is connected with clutch lacing wire pin, and the other end is connected together with energy storage spring telescopic stand through after Guy wire guide-tube, energy storage spring fixed base, energy storage spring successively;
Main shaft is also provided with a pressure and often drives damping differential mechanism, and the both sides that damping differential mechanism and normally open clutch lay respectively at clutch yoke are often opened in this pressure; Described pressure is often driven damping differential mechanism and is comprised stop push-plate and immobilising friction dish, and described immobilising friction dish has the internal spline matched with the external splines on main shaft, and this immobilising friction dish is fixedly connected with by spline fitted with main shaft; Described stop push-plate is positioned at pressure and often opens the side of damping differential mechanism near clutch yoke, when normally open clutch assembly is promoted to enter open mode by release spring, can promote clutch yoke and drive stop push-plate to move towards immobilising friction dish direction.
2. the clutch system open in usual of a kind of walk-behind type running machine according to claim 1, is characterized in that: described immobilising friction dish and all T-shaped nested structure of stop push-plate, and stop push-plate is set on immobilising friction dish.
3. the clutch system open in usual of a kind of walk-behind type running machine according to claim 1 and 2, it is characterized in that: described stop push-plate both sides corresponding with the fork foot of shift fork are flat side's tangent plane structure, this flat side's tangent plane structure is placed in the fork pin of clutch yoke, thus can limit stop push-plate and rotate when stop works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115812.0A CN103836086B (en) | 2014-03-26 | 2014-03-26 | A kind of clutch system open in usual of walk-behind type running machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115812.0A CN103836086B (en) | 2014-03-26 | 2014-03-26 | A kind of clutch system open in usual of walk-behind type running machine |
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| Publication Number | Publication Date |
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| CN103836086A CN103836086A (en) | 2014-06-04 |
| CN103836086B true CN103836086B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410115812.0A Expired - Fee Related CN103836086B (en) | 2014-03-26 | 2014-03-26 | A kind of clutch system open in usual of walk-behind type running machine |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008018541A1 (en) * | 2008-04-12 | 2009-10-15 | Deere & Company, Moline | Combination of an agricultural implement and a carrier or towing vehicle with a sensor for detecting the opening state of a cover and an automatic shutdown of the PTO shaft |
| CN201995308U (en) * | 2011-04-15 | 2011-10-05 | 严华 | Guy cable device capable of converting normally-closed clutch into normally-opened clutch |
| CN102405703A (en) * | 2011-08-02 | 2012-04-11 | 重庆威马农业机械有限公司 | Power control structure of minitiller and safety device thereof |
| CN203730598U (en) * | 2014-03-26 | 2014-07-23 | 重庆集氏科技有限公司 | Normally-open clutch system of hand-held walking machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3255556B2 (en) * | 1995-04-06 | 2002-02-12 | 三菱農機株式会社 | Tajo rice transplanter |
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2014
- 2014-03-26 CN CN201410115812.0A patent/CN103836086B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008018541A1 (en) * | 2008-04-12 | 2009-10-15 | Deere & Company, Moline | Combination of an agricultural implement and a carrier or towing vehicle with a sensor for detecting the opening state of a cover and an automatic shutdown of the PTO shaft |
| CN201995308U (en) * | 2011-04-15 | 2011-10-05 | 严华 | Guy cable device capable of converting normally-closed clutch into normally-opened clutch |
| CN102405703A (en) * | 2011-08-02 | 2012-04-11 | 重庆威马农业机械有限公司 | Power control structure of minitiller and safety device thereof |
| CN203730598U (en) * | 2014-03-26 | 2014-07-23 | 重庆集氏科技有限公司 | Normally-open clutch system of hand-held walking machine |
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| CN103836086A (en) | 2014-06-04 |
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Granted publication date: 20151202 Termination date: 20210326 |