CN201448176U - Starting handle anti-reverse device with starting pin internal combustion engine - Google Patents
Starting handle anti-reverse device with starting pin internal combustion engine Download PDFInfo
- Publication number
- CN201448176U CN201448176U CN2009200394239U CN200920039423U CN201448176U CN 201448176 U CN201448176 U CN 201448176U CN 2009200394239 U CN2009200394239 U CN 2009200394239U CN 200920039423 U CN200920039423 U CN 200920039423U CN 201448176 U CN201448176 U CN 201448176U
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- starting
- combustion engine
- unidirectional
- operating crank
- thrust bearing
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Abstract
A starting handle anti-reverse device with a starting pin internal combustion engine comprises a starting handle and a rotating pair element only capable of performing unidirectional relative motion, a starting spiral groove is formed at the end part of the starting handle, a reverse thrust pin is also mounted or a reverse thrust block of a bi-directional spiral groove is axially arranged on the starting handle, the outer ring of the rotating pair element only capable of performing unidirectional relative motion is fixed on an internal combustion engine body, and a reverse thrust spiral groove which has the direction identical with the spiral direction of a starting spiral groove at the end part of the starting handle and is in contact with the reverse thrust pin on the starting handle or an arc bump in contact with the working surface of the bi-directional spiral groove on the reverse thrust block of the starting handle is arranged at the outer end of the inner ring of the rotating pair element only capable of performing unidirectional relative motion. The unidirectional reverse thrust bearing replaces a ratchet non-return mechanism, thereby realizing the stepless non-return without an idle angle, effectively reducing the reverse throw-out angle of the handle, enhancing the effect of preventing the handle from reverse rotating and having simples structure, less parts, high reliability without affecting the normal starting effect.
Description
Technical field
The utility model relates to technical field of internal combustion engines, is specifically related to internal-combustion engine hand starting safety technique field.
Background technique
Internal-combustion engine is started working and must be started earlier,, the internal combustion oil of cylinder mixed gas is caught fire promote piston, connecting rod to improve temperature by the air in the rotary crankshaft promotion Piston Compression cylinder, makes the acting of internal combustion engine operation and output torque.Common start mode has electric motor starting, auxiliary engine starting and elastic element energy storage starting, manpower starting etc., then often from cost and convenient angle, adopts the manpower starting for the small-power internal-combustion engine.Modal mode is by the operating crank hand starting in the manpower starting, and the following single cylinder diesel of present domestic 15kW still adopts hand starting basically.
Because people's the technical ability experience and the difference of strength aspect during hand starting, internal-combustion engine counter-rotating incident may take place, comprise the moment sex reversal and the back continuity counter-rotating incident of catching fire that does not catch fire, continuity counter-rotating incident in back is breakneck if internal-combustion engine catches fire.Because operating crank and engine starting
AxleBetween normally simple one way engagement, counter-rotating back operating crank takes place and is started in internal-combustion engine
AxleOppositely promote and can't throw off, cause handle counter-rotating synchronously even injury operator.
At the problems referred to above, the multiple technological scheme that prevents the counter-rotating of engine starting handle has appearred.These technological schemes are divided four kinds substantially:, the one, the adjustment of internal combustion engines igniting and period of intake makes that be in the valve opening state firing time when counter-rotating occurring in the starting process, and what the postignition of stopping to reverse was turned round continuously may be to alleviate injury; The 2nd, the mechanism of oppositely skidding is set, as the technological scheme of Japan Patent " clear 59-200064 " announcement merely on operating crank; The 3rd, transmission trip gear when the counter-rotating that internal combustion engines is provided with is as Chinese patent application 200720187883.7 " built-in automatic decompression anti-reversal starting device "; The 4th, ratchet mechanism and separating mechanism are set, as Chinese patent application 200810100091.0 " disengaging safety handle " on operating crank and internal-combustion engine.The background technique the most close with the utility model is above-mentioned the 4th kind: Chinese patent application 200810100091.0 " disengaging safety handle ", mainly form by starting shaft, starting pin, distribution, base, ratchet mechanism, handle, distribution is set on the base, skewed slot is set on the ratchet, handle and ratchet are installed together, when with the hand lever starting internal-combustion engine, as produce starting counter-rotating, at starting shaft, ratchet mechanism, under the effect of base, handle and starting shaft break away from, and the potential safety hazard when having eliminated hand primer has been avoided the generation of personal injury accident.This patent application has been adopted ratchet and pawl arrangement has been set on operating crank, because ratchet and pawl arrangement is a kind of unidirectional intermittent motion mechanism, exist the ratchet counter-rotating idle stroke or the idle running angle of causing, cause the comprehensive reverse turn disengagement of handle angle to react the excessive defective of insensitive and effective disengagement angle too small mechanism impact force greatly because of the hook tooth spacing; Simultaneously because the operating crank of this patent application is slidingly matched by a plurality of parts is assembled, structure is loaded down with trivial details, internal friction power is big, and has that structural rigidity is low, the defective of poor reliability, difficulties such as the higher popularization of engine modification cost.
Summary of the invention
The utility model purpose is to overcome the deficiencies in the prior art, and a kind of simple in structure, moment sex reversal and the anti-reversion device for starting handle that takes up the untie-sell internal-combustion engine of the back continuity counter-rotating incident of catching fire that can prevent effectively that internal-combustion engine from taking place not catch fire in when starting is provided.
The technical solution of the utility model: contain operating crank, can only make the revolute pair element of unidirectional relative movement, the end of operating crank is provided with the starting spiral chute, anti-distribution also is installed on the operating crank or is axially arranged with the anti-pushing block of bidirectional screw groove, the outer ring that can only make the revolute pair element of unidirectional relative movement is fixed on the internal combustion engine main body, the outer end of inner ring that can only make the revolute pair element of unidirectional relative movement be provided with starting spiral chute Hand of spiral with the operating crank end identical with operating crank on the contacted anti-spiral chute that pushes away of anti-distribution, or be provided with operating crank on anti-pushing block on the contacted arc bump of bidirectional screw groove working surface.
The revolute pair element that can only do unidirectional relative movement is unidirectional anti-thrust bearing, is provided with some piece rollers of carving between the inner ring of unidirectional anti-thrust bearing and the outer ring.
During work, the mesopore of operating crank end is enclosed within on the engine starting axle, and the starting spiral chute of operating crank end is stuck on the starting pin on the engine starting axle, and the anti-distribution on the operating crank places counter the pushing away in the spiral chute on the inner ring of unidirectional anti-thrust bearing; When operating crank was rotated in the forward internal-combustion engine, the inner ring of unidirectional anti-thrust bearing was in rotation status; When counter-rotating takes place in internal-combustion engine, because of the starting spiral chute on the operating crank hooks starting pin on the engine starting axle, the counter-rotating of pressure operating crank, the inner ring of unidirectional anti-thrust bearing can not reverse and be in self-locking state, anti-distribution on the operating crank in the counter-rotating is subjected to counter on the inner ring of unidirectional anti-thrust bearing to push away the effect of spiral fluted end thrust and withdraws to the lateral direction of internal-combustion engine, until the starting spiral chute on the operating crank withdraw from the engine starting axle on being connected of starting pin, the transmission of operating crank and engine starting axle is cut off, and operating crank is thrown off and stopped to reverse.
The anti-helix lead that pushes away on the inner ring of unidirectional anti-thrust bearing is 113-216mm, can guarantee operating crank reliably disengagement in the scope at counter-rotating 18-35 degree angle.
Preferably, the anti-helix lead that pushes away on the inner ring of unidirectional anti-thrust bearing is 132-180mm, and counter to push away helix lead little, and the impact force when operating crank is thrown off is just little, and the angle that operating crank and starting shaft are thrown off just greatly; Otherwise counter to push away helix lead big, impact force when operating crank is thrown off is just big, the angle that operating crank and starting shaft are thrown off is just little, the anti-helix lead that pushes away is designed to 132-180mm, each part issuable integrating error on axial length had both been considered, impact force when taking into account operating crank again and throwing off can not be too big, the most important thing is to have guaranteed that operating crank throws off with starting shaft in 22-30 degree corner, and injury operator's possibility is reduced greatly.
Especially, anti-distribution on the operating crank is cylindrical, be installed in the rear side of starting pin on the operating crank, enter starting spiral chute when bottom on the engine starting axle to guarantee starting pin, the anti-distribution on the operating crank also enters counter the pushing away at the bottom of the spiral chute on the inner ring of unidirectional anti-thrust bearing synchronously; The length of the anti-distribution on the operating crank is greater than the length of starting pin on the operating crank, make on the operating crank anti-distribution the footpath of unidirectional anti-thrust bearing upwards with the inner ring of unidirectional anti-thrust bearing on the anti-spiral chute that pushes away effectively contact.
Preferably, be evenly equipped with two anti-spiral chutes that push away on the inner ring of unidirectional anti-thrust bearing.
Preferably, on the two terminal circle cylinder of the anti-distribution on the operating crank, be provided with counter on the inner ring with unidirectional anti-thrust bearing and push away the inclined-plane that spiral chute is complementary, the anti-contact stress that pushes away the spiral chute working surface with on the inner ring of anti-distribution on the increasing operating crank and unidirectional anti-thrust bearing reduces both wearing and tearing.
Preferably, the anti-spiral chute that pushes away on the inner ring of unidirectional anti-thrust bearing is the two-way anti-spiral chute that pushes away, wherein, with starting spiral chute Hand of spiral on the engine starting axle mutually the anti-spiral chute that pushes away of the same side be working surface, its helical pitch is 113-216mm, and best helical pitch is 132-180mm; With the opposite side of starting spiral chute Hand of spiral on the engine starting axle counter push away the spiral fluted helical pitch greater than 113mm until infinitely great and become the straight trough parallel with the engine starting axis.
Especially, the outer end of the inner ring of unidirectional anti-thrust bearing is provided with the circular arc projection, and the center line of circular arc projection is vertical with the shaft axis of unidirectional anti-thrust bearing, and correspondingly, operating crank is provided with anti-pushing block, and anti-pushing block is provided with the two-way anti-helical groove that pushes away.
The ball of energy bearing axial pushing force also has been installed between the inner ring of unidirectional anti-thrust bearing and the outer ring especially.
Especially, the hole wall in the starting hole of unidirectional anti-thrust bearing outer ring and internal-combustion engine is fixed as one.
Compared with prior art, the utlity model has following advantage: simple in structure, number of spare parts is few, and the reliability height does not influence the normal starting effect; With the unidirectional anti-thrust bearing of reverse self-locking of moment at an arbitrary position, substitute ratchet non-return mechanism of the prior art, overcome the idle running angle that ratchet mechanism causes because of there being the ratchet spacing, realized the stepless non-return at the angle of not dallying, reduce the reverse turn disengagement angle of handle effectively, improved the effect that prevents the handle counter-rotating.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the utility model embodiment 1 an operating crank structural representation;
Fig. 3 is the utility model embodiment 2 a structural representation;
Fig. 4 is the utility model embodiment 2 an operating crank structural representation.
Among the figure: 1--carves the piece roller; The 2-starting shaft; 3--starts spiral chute; The 4--starting pin; The anti-spiral chute that pushes away of 5--; The 6--operating crank; 7--is counter to be promoted; The inner ring of the unidirectional anti-thrust bearing of 8--; The outer ring of the unidirectional anti-thrust bearing of 9--; 10-engine starting hole; The 11-ball; The 12--operating crank; The inner ring of the unidirectional anti-thrust bearing of 13--; The anti-pushing block of 14--; The 15--arc bump; 16--bidirectional screw groove; The 17--inclined-plane.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Fig. 1 is embodiment 1 of the present utility model.Among the figure, contain operating crank 6, unidirectional anti-thrust bearing, the inner ring 8 of unidirectional anti-thrust bearing exceeds the outer ring 9 of unidirectional anti-thrust bearing, be provided with between the inner ring 8 of unidirectional anti-thrust bearing and the outer ring 9 and carve piece roller 1 and ball 11, radius vector on voussoir roller 1 transverse section changes continuously, have starting pin 4 on the starting shaft 2 of internal-combustion engine, inner ring 8 skies of unidirectional anti-thrust bearing are enclosed within on the starting shaft 2 of internal-combustion engine, the end of operating crank 6 is provided with starting spiral chute 3, anti-distribution 7 also has been installed on the operating crank 6, the length of anti-distribution 7 equals the external diameter of the inner ring 8 of unidirectional anti-thrust bearing, the outer ring 9 of unidirectional anti-thrust bearing fixedly is assemblied in the engine starting hole 10, the outer end of the inner ring 8 of unidirectional anti-thrust bearing is provided with two counter push away spiral chutes 5 identical with starting spiral chute 3 Hand of spiral of operating crank 6 ends, it is counter that to push away spiral chute 5 uniform on the circumferential end surfaces of the inner ring 8 of bearing, the anti-spiral chute 5 that pushes away contacts the anti-spiral chute 5 helical pitch 165mm that push away on the inner ring 8 of anti-thrust bearing with anti-distribution 7 on the operating crank 6.When unidirectional anti-thrust bearing was rotated in the forward, the inner ring 8 of unidirectional anti-thrust bearing, outer ring 9 made voussoir roller 1 rotate to little radius vector direction with the frictional force of voussoir roller 1, can relatively rotate between the inner ring 8 of unidirectional anti-thrust bearing, the outer ring 9; During as counterrotating, the inner ring 8 of unidirectional anti-thrust bearing, outer ring 9 make voussoir roller 1 rotate to big radius vector direction with the frictional force of voussoir roller 1, cause voussoir roller 1 wedge between the outer ring 9 of the inner ring 8 of unidirectional anti-thrust bearing and unidirectional anti-thrust bearing, make it and to relatively rotate.When operating crank 6 was rotated in the forward internal-combustion engine, the inner ring 8 of unidirectional anti-thrust bearing was in free rotation state; When counter-rotating took place internal-combustion engine, the starting pin 4 on the starting shaft 2 was forced operating crank 6 counter-rotatings by the starting spiral chute on the operating crank 63; Because this moment, the inner ring 8 of unidirectional anti-thrust bearing was in the self-locking and braking state, anti-distribution 7 on the operating crank 6 is pressed in counter the pushing away on spiral chute 5 working surfaces on the inner ring 8 of unidirectional anti-thrust bearing, operating crank 6 is subjected to counter the push away axial thrust load of the reaction force that spiral chute 5 produces that is axially reaction thrust effect and retreating, withdraw from and starting pin 4 position engaged until starting spiral chute 3, cut off the transmission of starting pin 4 and operating crank 6, operating crank 6 disengagements also stop counter-rotating.
Fig. 2 is the structural representation of the operating crank 5 among the embodiment 1 of the present utility model
Among Fig. 2, the end of operating crank 6 is provided with starting spiral chute 3, anti-distribution 7 also has been installed on the operating crank 6, on the two terminal circle cylinder of anti-distribution 7, be provided with two-way counter on the inner ring 8 with unidirectional anti-thrust bearing and push away the inclined-plane 17 that spiral chute 5 is complementary, the two-way anti-contact stress that pushes away the spiral chute working surface with on the inner ring 8 of anti-distribution 7 on the increasing operating crank 6 and unidirectional anti-thrust bearing reduces both wearing and tearing.
Fig. 3 is embodiment 2 of the present utility model.Among Fig. 3, contain operating crank 12, unidirectional anti-thrust bearing, the inner ring 13 of unidirectional anti-thrust bearing exceeds the outer ring 9 of unidirectional anti-thrust bearing, be provided with between the inner ring 13 of unidirectional anti-thrust bearing and the outer ring 9 and carve piece roller 17 and ball 11, radius vector on voussoir roller 17 transverse section changes continuously, have starting pin 4 on the starting shaft 2 of internal-combustion engine, inner ring 13 skies of unidirectional anti-thrust bearing are enclosed within on the starting shaft 2 of internal-combustion engine, the end of operating crank 12 is provided with starting spiral chute 3, the anti-pushing block 14 that is axially arranged with bidirectional screw groove 16 also has been installed on the operating crank 12, the outer end of the inner ring 13 of unidirectional anti-thrust bearing be provided with starting spiral chute 3 Hand of spiral with operating crank 12 ends identical with operating crank 12 on anti-pushing block 14 on bidirectional screw groove 16 contacted arc bumps 15, the center line of arc bump 15 is vertical with the shaft axis of anti-thrust bearing; The helical pitch of two helicoids of the bidirectional screw groove of anti-pushing block 14 is 170mm, and wherein the rotation direction of bidirectional screw groove 16 is identical with the starting spiral chute 3 of starting shaft 2, and the outer ring 9 of unidirectional anti-thrust bearing press-fits and is fixed in the engine starting hole 10.When operating crank 12 was rotated in the forward internal-combustion engine, the inner ring 13 of unidirectional anti-thrust bearing was in free rotation state; When counter-rotating took place internal-combustion engine, the starting pin 4 on the starting shaft 2 was forced operating crank 12 counter-rotatings by the starting spiral chute on the operating crank 12 3; Because this moment, the inner ring 13 of unidirectional anti-thrust bearing was in the self-locking and braking state, the working surface of the spiral chute 16 of the anti-pushing block 14 on the operating crank 12 promotes the arc bump 15 on the inner ring 13 of unidirectional anti-thrust bearing, operating crank 12 is subjected to the axial thrust load of the reaction force that arc bump 15 produces that is axially reaction thrust effect and retreating, withdraw from starting pin 4 until starting spiral chute 3, cut off the transmission of operating crank 12 and starting pin 4, operating crank 12 disengagements also stop counter-rotating.
Fig. 4 is the structural representation of the operating crank 12 among the embodiment 2 of the present utility model
Among Fig. 4, the end of operating crank 12 is provided with starting spiral chute 3, and the anti-pushing block 14 that is axially arranged with bidirectional screw groove 16 also has been installed on the operating crank 12.
Execute for two of the present utility model
ExampleBeing applicable to that starting pin is arranged on the internal-combustion engine on the starting shaft, is the internal-combustion engine that has cylinder starting pin structure on the starting shaft of representative with serial single cylinder diesels such as domestic various lots of R, EM particularly.Proper transformation operating crank head construction changes spiral starting groove 3 and is starting pin, applicable to the internal-combustion engine that spiral starting groove is set on the starting shaft, as S, ZH, ZS series single cylinder diesel and most of little cylinder diameter multi-cylinder engine.
The above only is preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction.Though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all still belongs in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (10)
1. take up the anti-reversion device for starting handle of untie-sell internal-combustion engine, contain operating crank, can only make the revolute pair element of unidirectional relative movement, the end of operating crank is provided with the starting spiral chute, the anti-pushing block that it is characterized in that anti-distribution also is installed on the operating crank or be axially arranged with the bidirectional screw groove, the outer ring that can only make the revolute pair element of unidirectional relative movement is fixed on the internal combustion engine main body, the outer end of inner ring that can only make the revolute pair element of unidirectional relative movement be provided with starting spiral chute Hand of spiral with the operating crank end identical with operating crank on the contacted anti-spiral chute that pushes away of anti-distribution, or be provided with operating crank on anti-pushing block on the contacted arc bump of bidirectional screw groove working surface.
2. the anti-reversion device for starting handle that takes up the untie-sell internal-combustion engine according to claim 1, the revolute pair element that it is characterized in that doing unidirectional relative movement is unidirectional anti-thrust bearing, is provided with some piece rollers of carving between the inner ring of unidirectional anti-thrust bearing and the outer ring.
3. the anti-reversion device for starting handle that takes up the untie-sell internal-combustion engine according to claim 2 is characterized in that the anti-helix lead that pushes away on the inner ring of unidirectional anti-thrust bearing is 113-216mm.
4. the anti-reversion device for starting handle that takes up the untie-sell internal-combustion engine according to claim 3 is characterized in that the anti-helix lead that pushes away on the inner ring of unidirectional anti-thrust bearing is 132-180mm.
5. according to claim 1 or the 4 described anti-reversion device for starting handle that take up the untie-sell internal-combustion engine, it is characterized in that the anti-distribution on the operating crank is cylindrical, be installed in the rear side of starting pin on the operating crank, the length of the anti-distribution on the operating crank is greater than the length of the starting pin on the engine starting axle.
6. according to claim 1 or the 4 described anti-reversion device for starting handle that take up the untie-sell internal-combustion engine, it is characterized in that being evenly equipped with two anti-spiral chutes that push away on the inner ring of unidirectional anti-thrust bearing.
7. the anti-reversion device for starting handle that takes up the untie-sell internal-combustion engine according to claim 5 is characterized in that on the two terminal circle cylinder of the anti-distribution on the operating crank, is provided with counter on the inner ring with unidirectional anti-thrust bearing and pushes away the inclined-plane that spiral chute is complementary.
8. the anti-reversion device for starting handle that takes up the untie-sell internal-combustion engine according to claim 2, it is characterized in that the anti-spiral chute that pushes away on the inner ring of unidirectional anti-thrust bearing is the two-way anti-spiral chute that pushes away, wherein, with starting spiral chute Hand of spiral on the engine starting axle mutually the anti-spiral chute that pushes away of the same side be working surface, its helical pitch is 113-216mm, and best helical pitch is 132-180mm; With the opposite side of starting spiral chute Hand of spiral on the engine starting axle counter push away the spiral fluted helical pitch greater than 113mm until infinitely great and become the straight trough parallel with the engine starting axis.
9. the anti-reversion device for starting handle that takes up the untie-sell internal-combustion engine according to claim 1, the outer end that it is characterized in that the inner ring of unidirectional anti-thrust bearing is provided with the circular arc projection, and the center line of circular arc projection is vertical with the shaft axis of unidirectional anti-thrust bearing, correspondingly, operating crank is provided with anti-pushing block, and anti-pushing block is provided with the two-way anti-helical groove that pushes away.
10. according to claim 4,8, the 9 described anti-reversion device for starting handle that take up the untie-sell internal-combustion engine, it is characterized in that the hole wall in the starting hole of unidirectional anti-thrust bearing outer ring and internal-combustion engine is fixed as one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200394239U CN201448176U (en) | 2009-04-14 | 2009-04-14 | Starting handle anti-reverse device with starting pin internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200394239U CN201448176U (en) | 2009-04-14 | 2009-04-14 | Starting handle anti-reverse device with starting pin internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448176U true CN201448176U (en) | 2010-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200394239U Expired - Fee Related CN201448176U (en) | 2009-04-14 | 2009-04-14 | Starting handle anti-reverse device with starting pin internal combustion engine |
Country Status (1)
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| CN (1) | CN201448176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871413A (en) * | 2010-05-18 | 2010-10-27 | 金坛鑫田柴油机有限公司 | Starting structure for single-cylinder air-cooled diesel engine |
-
2009
- 2009-04-14 CN CN2009200394239U patent/CN201448176U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871413A (en) * | 2010-05-18 | 2010-10-27 | 金坛鑫田柴油机有限公司 | Starting structure for single-cylinder air-cooled diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20120414 |