CN102966680B - Engineering machine, and transmission system and clutch thereof - Google Patents
Engineering machine, and transmission system and clutch thereof Download PDFInfo
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- CN102966680B CN102966680B CN201210476592.5A CN201210476592A CN102966680B CN 102966680 B CN102966680 B CN 102966680B CN 201210476592 A CN201210476592 A CN 201210476592A CN 102966680 B CN102966680 B CN 102966680B
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- cylinder body
- clutch
- driving gear
- transmission system
- assembly
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Abstract
The invention discloses a clutch. The clutch comprises an oil cylinder body and a driving gear, wherein the outer end of the oil cylinder body is in transmission connection with an output shaft; the driving gear is in transmission connection with a speed changing box; an inner spline is arranged at one end of the oil cylinder body, which faces the driving gear; an outer spline engaged with the inner spline is arranged at one end of the driving gear, which faces the oil cylinder body; and the oil cylinder body and the driving gear are connected under the effect of a first assembly and are separated under the effect of a second assembly. Therefore, the engagement and the separation of the splines realize the transmission and the cutting-off of power and the requirement on a machining precision is not high, so that the machining difficulty is reduced; meanwhile, the structure of the clutch gets rid of the utilization of a friction sheet and a cushion plate and the problem of sintering the friction sheet is overcome, so that the production cost is saved; and meanwhile, the flexibility of gear-shifting operation of the speed changing box is improved and the service life of transmission equipment is prolonged. The invention further discloses a transmission system comprising the clutch and an engineering machine comprising the transmission system.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of clutch for transmission system.The invention still further relates to a kind of transmission system comprising above-mentioned clutch, and comprise the engineering machinery of above-mentioned transmission system.
Background technique
Clutch is the vitals of automobile dynamic system, which is responsible and cuts off carrying out between power with motor and the work be connected, plays an important role when vehicle start and gearshift,
A kind of typical clutch comprises the cylinder body (i.e. driving gear portion) forming confined space and the driven gear being in transmission connection with cylinder body or disconnecting, the piston outer end of cylinder body is connected with backing plate by locating stud, driven gear is provided with spaced apart several to friction plate near the side of backing plate, also Returnning spring is provided with between piston and cylinder body, to make piston when being only subject to the effect of spring force in retraction cylinder body, drive backing plate and friction plate are separated.When pressure oil carries out in cylinder body, the elastic force that piston overcomes Returnning spring under the effect of pressure oil outwards moves, and friction plate and backing plate are compressed, originally there is the friction plate of relative movement under the effect of frictional force, backing plate, driven gear be pressed in together, thus the transmission of the moment of torsion realized between driving gear and driven gear and motion.
But, mainly there is following defect in above-mentioned clutch configuration: first, the airtight space that cylinder body, piston and sealing are formed requires high, and the cylindrical of cylinder body endoporus, piston requires that machining accuracy is high, surface roughness required precision is high, difficulty of processing is larger, cost high when engineering machinery works buty shifting, the relative movement between piston and cylinder body adds the wearing and tearing of seal ring, thus occurs the phenomenon of complete machine powerless in work; Secondly, the usage quantity such as friction plate, backing plate is many, and heat treatment requirements is high, and cost of production is high, and is using in process, because temperature is too high, easily causes friction plate to sinter symptom, affects the working life of complete machine.
Therefore, how to reduce the machining accuracy of related components in clutch, reduce difficulty of processing, overcome friction plate sintering simultaneously, saving production cost, needing the problem of solution with regard to becoming those skilled in the art badly.
Summary of the invention
The object of this invention is to provide a kind of clutch for transmission system, the requirement on machining accuracy of its related components is lower, thus reduces difficulty of processing, which overcomes the problem of friction plate sintering simultaneously, has saved cost of production.Another object of the present invention is to provide a kind of transmission system comprising above-mentioned clutch, and comprises the engineering machinery of this transmission system.
For solving the problems of the technologies described above, the invention provides a kind of clutch for transmission system, comprising the cylinder body be in transmission connection with the output shaft of its outer end and described transmission system, and the driving gear be connected with the gearbox transmission of described transmission system; Be provided with the first assembly and the second assembly between described cylinder body and described driving gear, and both connect under the effect of described first assembly, be separated under the effect of described second assembly; One end towards described driving gear of described cylinder body is provided with internal spline, and described driving gear is provided with towards one end of described cylinder body the external splines engaged with described internal spline; Described first assembly comprises the baffle plate being fixed on described output shaft, with the first spring being fixed on described baffle plate with its one end, the other end of described first spring is fixed on described cylinder body, and when described cylinder body is separated with described driving gear, described first spring is in compressive state; Described second assembly comprises plunger, and one end of described plunger is sealed in valve pocket, and the cavity at its other end place is communicated with power oil sources; Described valve pocket is fixedly installed in the endoporus of described output shaft, and its inwall offers step, and one end that described plunger is positioned at described valve pocket is arranged with the second spring, and the end face of described second spring is resisted against described step.
Preferably, the number of described first assembly is eight, and each described first assembly is uniformly distributed along the circumference of described cylinder body.
Preferably, described cylinder body offers mounting hole towards the end face of described driving gear, and described first spring is arranged in described mounting hole.
Preferably, described mounting hole is flat counter sink.
Preferably, described output shaft is provided with circlip, described baffle plate is fixed on described output shaft by described circlip.
Preferably, the mating face of described cylinder body and described driving gear is conical surface.
Preferably, described internal spline and described external splines are rectangular spline.
The present invention also provides a kind of transmission system, comprises gearbox, and the clutch be connected with described gearbox transmission, and described clutch is clutch as above.
The present invention also provides a kind of engineering machinery, comprises power system, work system, and the transmission system be in transmission connection with described power system and described work system, and described transmission system is transmission system as above.
Clutch pack oil scraper cylinder body for transmission system provided by the present invention and driving gear, wherein the outer end of cylinder body and the output shaft of this transmission system are in transmission connection, and driving gear is connected with the gearbox transmission of this transmission system; One end towards described driving gear of cylinder body is provided with internal spline, driving gear is provided with towards one end of cylinder body the external splines engaged with internal spline, cylinder body and driving gear close to each other under the effect of the first assembly, and realize being in transmission connection with engaging of external splines by internal spline, cylinder body and driving gear the second assembly effect mutually away from, and engage realization by internal spline with the disconnection of external splines and be separated.
Under transmission system is in normal working, second assembly does not work, extraneous pressure oil is not had to enter clutch, now, cylinder body and driving gear close to each other under the effect of the first assembly, and realize being in transmission connection of cylinder body and driving gear by the engagement of inside and outside spline, to realize the transmission of moving; When transmission system needs to carry out the operations such as gearshift, the second assembly is connected with ambient pressure oil sources, and under the effect of the second assembly, cylinder body and driving gear overcome the active force of the first assembly, and cylinder body and driving gear are separated, to realize the disconnection of transmission.
Like this, above-mentioned clutch by the engagement of spline be separated the transmission and disconnection that realize power, as long as the internal spline on the external splines on cylinder body and driving gear can realize engaging, not there is shaft hole matching, requirement on machining accuracy is not high, thus reduce difficulty of processing, simultaneously, this clutch configuration has broken away from the use of friction plate, backing plate, overcome the problem of friction plate sintering, save cost of production, improve the flexibility that gearbox shifting is handled simultaneously, extend the working life of transmission device.
In a kind of embodiment, the cylinder body of clutch provided by the present invention and the mating face of driving gear are conical surface; When needs disconnect transmission, cylinder body separates under the leading role of this conical surface vertically with driving gear, and the process of throwing off to make spline is mild, thus conversion stationarity when improve transmission system gearshift.
In another kind of embodiment, clutch provided by the present invention, spline on its cylinder body and driving gear is rectangular spline, rectangular spline transmitting torque is larger, and stable working, manufacture cost is lower, thus further ensures the stationarity of transforming gear, and reduce further the processing cost of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of clutch provided by the present invention.
Embodiment
Core of the present invention is to provide a kind of clutch for transmission system, and the requirement on machining accuracy of its related components is lower, thus reduces difficulty of processing, which overcomes the problem of friction plate sintering simultaneously, has saved cost of production.Another core of the present invention is to provide a kind of transmission system comprising above-mentioned clutch, and comprises the engineering machinery of this transmission system.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of clutch provided by the present invention.
Clutch pack oil scraper cylinder body 9 for transmission system provided by the present invention and driving gear 6, wherein the outer end of cylinder body 9 and the output shaft 17 of this transmission system are in transmission connection, and driving gear 6 is connected with the gearbox transmission of this transmission system; One end towards described driving gear of cylinder body 9 is provided with internal spline, driving gear 6 is provided with towards one end of cylinder body 9 external splines engaged with internal spline, cylinder body 9 is close to each other under the effect of the first assembly with driving gear 6, and realize being in transmission connection with engaging of external splines by internal spline, cylinder body 9 and driving gear 6 the second assembly effect mutually away from, and engage realization by internal spline with the disconnection of external splines and be separated.
Cylinder body 9 is conical surface with the mating face of driving gear 6; When needs disconnect transmission, cylinder body 9 separates under the leading role of this conical surface vertically with driving gear 6, and the process of throwing off to make spline is mild, thus conversion stationarity when improve transmission system gearshift.
Apparently, above-mentioned conical surface act as guiding, it should tilt towards the direction being convenient to make cylinder body 9 be separated with driving gear 6.
Cylinder body 9 is also not limited to conical surface with the mating face of driving gear 6, if the smooth joint that can realize cylinder body 9 and driving gear 6 be separated, such as, this mating face also can be cylndrical surface.
Spline on cylinder body 9 and driving gear 6 is rectangular spline, and rectangular spline transmitting torque is comparatively large, and stable working, manufacture cost is lower, thus further ensures the stationarity of transforming gear, and reduce further the processing cost of equipment.
From theory, the spline on cylinder body 9 and driving gear 6 is also not limited to rectangular spline, if the engagement that can realize internal spline and external splines be separated, above-mentioned spline joint also can adopt the conventional other forms of spline used in related domain.
Above-mentioned cylinder body 9 can be connected by involute splines and output shaft 17, and because the number of teeth religion of involute splines is many, bearing capacity is strong, easy self-alignment, and installation precision is high, and therefore, under identical appearance size, spline path is large, is conducive to the rigidity increasing axle; Meanwhile, the chipless technological method for processing such as involute splines is convenient to adopt cold stranding, is coldly beaten, cold-extruded, manufacturing efficiency is high, and precision is high, is conducive to saving production cost.
The number of teeth of cylinder body 9 and driving gear 6 should carry out suitable adjustment according to user to the demand of the velocity ratio of gearbox, to adapt to different use occasions, does not limit at this.
Under transmission system is in normal working, second assembly does not work, extraneous pressure oil is not had to enter clutch, now, cylinder body 9 and driving gear 6 close to each other under the effect of the first assembly, and realize being in transmission connection of cylinder body 9 and driving gear 6 by the engagement of inside and outside spline, to realize the transmission of moving; When transmission system needs to carry out the operations such as gearshift, second assembly is connected with ambient pressure oil sources, under the effect of the second assembly, cylinder body 9 and driving gear 6 overcome the active force of the first assembly, and cylinder body 9 and driving gear 6 are separated, to realize the disconnection of transmission.
Like this, above-mentioned clutch by the engagement of spline be separated the transmission and disconnection that realize power, as long as the internal spline on the external splines on cylinder body 9 and driving gear 6 can realize engaging, requirement on machining accuracy is not high, thus reduces difficulty of processing, simultaneously, this clutch configuration has broken away from the use of friction plate, backing plate, overcomes the problem of friction plate sintering, has saved cost of production, improve the flexibility that gearbox shifting is handled simultaneously, extend the working life of transmission device.
In a kind of embodiment, the number of the first assembly provided by the present invention can be multiple, to provide enough restoring forces for cylinder body 9, ensures the bond strength of cylinder body 9 and driving gear 6.Particularly, the number of the first assembly can be eight, and each first assembly is uniformly distributed along the circumference of described cylinder body 9; Arrange eight along the circumferential direction equally distributed first assembly can ensure enough restoring forces, and make cylinder body 9 stressed comparatively even, be convenient to cylinder body 9 to-and-fro motion freely when switch operating state.
Apparently, above-mentioned first assembly is also not limited to eight, as long as can ensure enough restoring forces, and improve uniform force, such as, this first assembly also can be six or four as far as possible; Meanwhile, circumferential spatial position is enough, and under not affecting the prerequisite of normal work of other workpieces of clutch, the number of the first assembly also can more than eight.
Particularly, above-mentioned first assembly comprises baffle plate 12 and the first spring 11, wherein, baffle plate 12 is fixed on the radial direction of output shaft 17, and baffle plate 12 is fixed in one end of the first spring 11, and the other end is fixed on cylinder body 9, when cylinder body 9 is separated with driving gear 6, the first spring 11 is in compressive state; Like this, when transmission system needs to transmit motion, second assembly does not work, now, cylinder body 9 is only subject to the effect of the elastic force of the first spring 11, and the direction of this elastic force is towards driving gear 6, and cylinder body 9 is close driving gear 6 under the effect of this elastic force, and engaged with the external splines on driving gear 6 by the internal spline on it, realize being in transmission connection.
Above-mentioned cylinder body 9 can offer mounting hole towards the end face of driving gear 6, and the first spring 11 is arranged in this mounting hole, to make the structure of this clutch compacter.
Above-mentioned mounting hole is for being preferably flat counter sink, and the bottom due to mounting hole needs the end contact with the first spring 11, and the bottom design of mounting hole becomes the flat spring stress that makes even, does not tilt; Apparently, from theory, this mounting hole is not limited to flat counter sink, as long as the first spring 11 can be held, do not hinder the realization of the reset function of the first spring 11, such as, this mounting hole also can be through hole, now, need to increase in position the mounting plate fixing the first spring 11 end.
Above-mentioned output shaft 17 can be provided with circlip 13, and baffle plate 12 is fixed on circlip 13, to improve the installation capability of baffle plate 12; Apparently, baffle plate 12 also can be directly installed on output shaft 17.
In above-mentioned embodiment, the second assembly provided by the present invention comprises plunger 8, and one end of plunger 8 is sealed in valve pocket 4, and the cavity at its other end place is communicated with power oil sources; Valve pocket 4 is fixedly installed in the endoporus of described output shaft 17, and its inwall offers step, and one end that described plunger 8 is positioned at described valve pocket 4 is arranged with the second spring 5, and the end face of described second spring 5 is resisted against described step; When transmission system needs to disconnect transmission, power oil in power oil sources enters cavity, and promote plunger 8 to the lateral movement near driving gear 6, thus promote driving gear 6 to the lateral movement away from cylinder body 9, to be separated with cylinder body 9 by driving gear 6, thus realize the object disconnecting transmission.
Below for above-mentioned embodiment, simply introduce the working procedure of clutch provided by the present invention: cylinder body 9 is connected with output shaft 17 by involute splines, at uniform eight the flat counter sinks in right side (referring to the right-hand member shown in Fig. 1) of cylinder body 9, and in each flat counter sink, first spring 11 is installed, baffle plate 12 is spacing by the circlip 13 be fixed on output shaft 17, under the elastic pressure effect of the first spring 11, cylinder body 9 and driving gear 6 are connected by the rectangular spline of end face; When gear box hydraulic system is by under speed change valve control action, when in cylinder body 9, hydraulic oil is without pressure, cylinder body 9 is meshed with the rectangular spline of driving gear 6 end face under the effect of elastic force, transmission internal power input gear is by engaging with driving gear 6, by transmission of power to driving gear 6, then cylinder body 9 is passed to by the rectangular spline of end face, again by involute splines by transmission of power to output shaft 17, output shaft 17 passes to output flange by the external splines of end, finally realizes the power of gearbox and the output of motion.
The oil groove of annular is provided with at the right-hand member of output shaft 17, this oil groove is connected with the oil duct on gear box, in the both sides sealing groove of oil duct, respectively seal ring is installed, when gearbox is by the gear shift of gearbox control valve, hydraulic oil enters in middle oil duct by the oil groove of annular on output shaft 17, under pressure, plunger 8 overcomes the elastic force of the second spring 5, (refers to the left side in Fig. 1) left move along valve pocket 4; Simultaneously, in the process that plunger 8 is moved to the left, radial hole on hole on valve pocket 4 and plunger 8 is connected gradually, and opening area is once large until open completely gradually, hydraulic oil is by the oil duct on plunger 8, oil duct on valve pocket 4 carries out in the cavity of output shaft 17, cylinder body 9 and seal ring 7 composition, and the pressure in cylinder body 9 rose rapidly in moment, promotes the elastic force that cylinder body 9 overcomes the first spring 11 under the effect of the pressure and moves right; Like this, cylinder body 9 separates under the leading role of conical surface vertically with driving gear 6, and the rectangular spline of end face is thrown off, thus realizes the separation of the drive motion of two gears of clutch; Now, external impetus is by the involute external tooth of cylinder body 9, output shaft 17 is directly passed to through the involute splines between cylinder body 9 and output shaft 17, when under speed change operating valve control action, during gear switch, hydraulic fluid pressure in cylinder body 9 declines, under the elastic force effect of the first spring 11, cylinder body 9 is moved to the left, hydraulic oil in cylinder body 9 is turned back in the inner chamber of output shaft 17 by the oil duct on valve pocket 4, plunger 8, realizes cylinder body 9 and is meshed with the rectangular spline of driving gear 6 end face; Inner at output shaft 17, fluid pressure declines, and plunger 8 is under the effect of the restoring force of the second spring 5, move right, along with the reduction of intracavity space, remain in hydraulic oil in cylinder body by the aperture draining on piston, thus achieve the switching between gearbox different drive ratios.
Except above-mentioned clutch, the present invention also provides a kind of transmission system and comprises the engineering machinery of this transmission system, and other Each part of this transmission system and engineering machinery please refer to prior art, do not repeat them here.
Above a kind of engineering machinery provided by the present invention, its transmission system and clutch thereof are described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (9)
1. the clutch for transmission system, comprise the cylinder body (9) be in transmission connection with the output shaft (17) of its outer end and described transmission system, and the driving gear (6) to be connected with the gearbox transmission of described transmission system, the first assembly and the second assembly is provided with between described cylinder body (9) and described driving gear (6), and both connect under the effect of described first assembly, be separated under the effect of described second assembly; It is characterized in that, one end towards described driving gear (6) of described cylinder body (9) is provided with internal spline, and described driving gear (6) is provided with towards one end of described cylinder body (9) the external splines engaged with described internal spline; Described first assembly comprises the baffle plate (12) being fixed on described output shaft (17), with the first spring (11) being fixed on described baffle plate (12) with its one end, the other end of described first spring (11) is fixed on described cylinder body (9), when described cylinder body (9) is separated with described driving gear (6), described first spring (11) is in compressive state; Described second assembly comprises plunger (8), and one end of described plunger (8) is sealed in valve pocket (4), and the cavity at its other end place is communicated with power oil sources; Described valve pocket (4) is fixedly installed in the endoporus of described output shaft (17), and its inwall offers step, one end that described plunger (8) is positioned at described valve pocket (4) is arranged with the second spring (5), and the end face of described second spring (5) is resisted against described step.
2. the clutch for transmission system according to claim 1, is characterized in that, the number of described first assembly is eight, and each described first assembly is uniformly distributed along the circumference of described cylinder body (9).
3. the clutch for transmission system according to claim 1, it is characterized in that, described cylinder body (9) offers mounting hole towards the end face of described driving gear (6), and described first spring (11) is arranged in described mounting hole.
4. the clutch for transmission system according to claim 3, is characterized in that, described mounting hole is flat counter sink.
5. the clutch for transmission system according to claim 1, it is characterized in that, described output shaft (17) is provided with circlip (13), described baffle plate (12) is fixed on described output shaft (17) by described circlip (13).
6. the clutch for transmission system according to any one of claim 1 to 5, is characterized in that, described cylinder body (9) is conical surface with the mating face of described driving gear (6).
7. the clutch for transmission system according to any one of claim 1 to 5, is characterized in that, described internal spline and described external splines are rectangular spline.
8. a transmission system, comprises gearbox, and the clutch be connected with described gearbox transmission, it is characterized in that, described clutch is the clutch as described in any one of claim 1 to 7.
9. an engineering machinery, comprises power system, work system, and with the transmission system that described power system and described work system are in transmission connection, it is characterized in that, described transmission system is transmission system as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210476592.5A CN102966680B (en) | 2012-11-21 | 2012-11-21 | Engineering machine, and transmission system and clutch thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210476592.5A CN102966680B (en) | 2012-11-21 | 2012-11-21 | Engineering machine, and transmission system and clutch thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102966680A CN102966680A (en) | 2013-03-13 |
| CN102966680B true CN102966680B (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210476592.5A Active CN102966680B (en) | 2012-11-21 | 2012-11-21 | Engineering machine, and transmission system and clutch thereof |
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| Country | Link |
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| CN (1) | CN102966680B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151460A (en) * | 2021-12-13 | 2022-03-08 | 南京邦奇自动变速箱有限公司 | Double-spring power coupling device of transmission |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070982A (en) * | 1990-04-12 | 1991-12-10 | Eaton Corporation | Power take-off engagement mechanism |
| DE10126485A1 (en) * | 2001-05-31 | 2002-12-05 | Zahnradfabrik Friedrichshafen | Dog clutch, with a sliding section, is held open by pressure on a ball which pushes it against a spring, for a rapid closing action by spring reassertion when the pressure is reduced |
| CN1743695A (en) * | 2004-08-19 | 2006-03-08 | 通用汽车公司 | Dog clutch and method for overdrive |
| CN201065897Y (en) * | 2007-07-31 | 2008-05-28 | 山推工程机械股份有限公司 | Hydraulic control main clutch for bulldozer |
| CN201152326Y (en) * | 2007-07-03 | 2008-11-19 | 何建军 | Overrunning clutch and its assembly |
| EP2330316A1 (en) * | 2009-12-04 | 2011-06-08 | Turner Powertrain Systems Limited | Combined transmission system |
-
2012
- 2012-11-21 CN CN201210476592.5A patent/CN102966680B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070982A (en) * | 1990-04-12 | 1991-12-10 | Eaton Corporation | Power take-off engagement mechanism |
| DE10126485A1 (en) * | 2001-05-31 | 2002-12-05 | Zahnradfabrik Friedrichshafen | Dog clutch, with a sliding section, is held open by pressure on a ball which pushes it against a spring, for a rapid closing action by spring reassertion when the pressure is reduced |
| CN1743695A (en) * | 2004-08-19 | 2006-03-08 | 通用汽车公司 | Dog clutch and method for overdrive |
| CN201152326Y (en) * | 2007-07-03 | 2008-11-19 | 何建军 | Overrunning clutch and its assembly |
| CN201065897Y (en) * | 2007-07-31 | 2008-05-28 | 山推工程机械股份有限公司 | Hydraulic control main clutch for bulldozer |
| EP2330316A1 (en) * | 2009-12-04 | 2011-06-08 | Turner Powertrain Systems Limited | Combined transmission system |
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| CN102966680A (en) | 2013-03-13 |
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