CN216407544U - Novel wet clutch for middle and small horsepower tractor - Google Patents
Novel wet clutch for middle and small horsepower tractor Download PDFInfo
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- CN216407544U CN216407544U CN202123044910.4U CN202123044910U CN216407544U CN 216407544 U CN216407544 U CN 216407544U CN 202123044910 U CN202123044910 U CN 202123044910U CN 216407544 U CN216407544 U CN 216407544U
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Abstract
The utility model discloses a novel wet clutch for a middle and small horsepower tractor, wherein a shell and a clutch shaft are of an integral structure, an external spline at the left end of the clutch shaft, which is close to the shell, is sequentially provided with a left brake disc assembly, a brake plate, a wave spring and a right brake disc assembly, a piston inner hole is sleeved on the clutch shaft, the clutch shaft is also sleeved with a return spring, the right end of the clutch shaft is sleeved with a bearing, and the outer side of the bearing is provided with a hub; the utility model provides a novel wet clutch for a middle and small horsepower tractor, which adopts a hydraulic power compression mode, has compact structure, good heat dissipation, simple operation and convenient installation, greatly reduces the volume and the weight of the clutch correspondingly, has small inertia, can ensure that the clutch with the same size can be ensured only by adjusting the number of clutch friction plate combined pieces according to the output torque, and has wide market prospect.
Description
Technical Field
The utility model belongs to the technical field of tractor parts, and particularly relates to a novel wet clutch for a middle and small-horsepower tractor.
Background
In the domestic market, tractor clutches can be divided into dry friction clutches and wet friction clutches. The dry friction clutch is widely applied to a tractor, the principle is that a compression spring or a disc spring is used for obtaining pressing force, the dry friction clutch is large in overall dimension, heavy in weight, large in inertia, poor in heat dissipation condition, poor in working environment, fast in abrasion and short in service life, and the inconvenience in installation and the labor intensity of workers are increased.
The dry clutch power output clutch and the main clutch are integrated double-acting clutches, the power output clutch and the main clutch start to rotate as long as the engine starts to work, the power output shaft is always in a rotating state, and if the power output clutch is separated and the power is cut off, the clutch is burnt and damaged. The wet clutch is different, the main clutch and the power output clutch are separated and mutually independent, the wet power output clutch adopts a plurality of friction plates, and when the same power is transmitted, the external dimension is far smaller than that of the dry clutch, so that the wet clutch can be conveniently arranged at the rear part of a power output clutch shaft of a rear transmission case of a tractor, the power can be conveniently led out from the transmission case and provided for agricultural implements or other mechanisms needing power; the power output clutch is hydraulically operated to be combined and separated, and electro-hydraulic control can be realized through an electromagnetic valve, so that the combination and separation of the clutch can be conveniently controlled through a button switch in a cab; the wet clutch is arranged in the box body, meanwhile, the clutch is provided with a cooling system for forcibly supplying cooling oil, the comfort and the reliability of the clutch are improved, the service life of the clutch is about twice of that of a dry clutch, and a novel wet friction clutch is urgently needed to meet the market demand of tractors in China.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the novel wet clutch for the middle and small horsepower tractor, the compression mode is hydraulic power compression, and the wet friction clutch has the advantages of compact structure, good heat dissipation, simple operation, convenience in installation, capability of meeting the market demands and wide market prospect.
The technical scheme adopted by the utility model is as follows: a novel wet clutch for a middle and small horsepower tractor comprises a clutch shaft and a shell; the shell and the clutch shaft are of an integral structure, a left brake disc assembly, a brake plate, a wave spring and a right brake disc assembly are sequentially assembled on an external spline at the left end of the clutch shaft close to the shell, three knock pins are uniformly distributed on the circumferential direction of the left end surface of the shell, a piston inner hole is sleeved on the clutch shaft, the knock pins penetrate through the end surface of an inner cavity of the shell and are jointed with the left end surface of the piston, a return spring is further sleeved on the clutch shaft, the left end of the return spring is tightly attached to the lower end surface of the right side of the piston, a spring retainer ring, a shaft retainer ring and a gasket are sequentially arranged at the right end of the return spring, a bearing is sleeved at the right end of the clutch shaft, a hub is arranged outside the bearing, the clutch shaft is inserted into the inner cavity of the hub, the return spring and the bearing are completely embedded into the inner cavity of the hub, a clutch friction disc assembly is connected with the external spline of the hub, and the left end of the clutch friction disc assembly is jointed with the upper end surface of the right side of the piston, an outer pressing plate is attached to the right end of the clutch friction plate assembly, a disc spring is arranged at the right end of the outer pressing plate, and a hole check ring is arranged at the right end of the disc spring; and a shaft check ring I is arranged on the left side of the left brake disc assembly.
The clutch friction plate assembly comprises a clutch friction plate assembly and an inner pressing plate, the clutch friction plate assembly and the inner pressing plate are sequentially and alternately installed, the clutch friction plate assembly is connected with a hub periphery spline, the inner pressing plate is tightly attached to the upper end face of the right side of the piston, a rubber return block is arranged between the inner pressing plates, a plurality of grooves are formed in the shell along the periphery uniformly, a plurality of lugs are arranged on the periphery of the inner pressing plate and the periphery of the outer pressing plate, and the lugs are fixedly connected with the grooves formed in the shell.
The surface of the clutch friction assembly is provided with a waffle groove or a parallel groove.
And an inner piston sealing ring and an outer piston sealing ring which are used for sealing hydraulic oil are arranged on the inner diameter and the outer diameter of the left end of the piston, and an O-shaped ring which is used for sealing hydraulic oil is arranged in the middle of the outer diameter of the ejector pin.
And a hydraulic oil hole is formed between the clutch shaft and the left side of the inner cavity of the shell, and the clutch shaft is close to the wave spring and the return spring and is provided with a lubricating oil hole respectively.
The utility model is used for the tractor with the power section of 140 plus 160 horsepower sections, and has basically the same principle and structure form and different sizes. The clutch with the same size can be ensured only by adjusting the number of clutch friction plate combined pieces according to the output torque, the size and the weight of the clutch are correspondingly reduced, the inertia is small, and the clutch is compact in structure and convenient to install.
When the tractor works, the power of an engine is input into the wet power output clutch through the driving shaft, the brake plate is fixedly connected to the gearbox body through the pin, the electromagnetic valve is installed at the rear end of the clutch, and a driver controls the on-off of the electromagnetic valve according to actual work requirements, so that the wet power output clutch is combined or separated, and the output state of the power of the engine is controlled. When the engine starts to work, the driving shaft starts to rotate, the hub is driven to rotate through the spline shaft, the outer spline of the hub drives the clutch friction plate composite member to rotate, and at the moment, the inner pressing plate and the outer pressing plate are static, and no power is output backwards. When power output is needed to drive an agricultural implement to work, an electromagnetic valve control button is started, hydraulic oil enters a clutch oil inlet through a driving shaft axial center hole and a hydraulic oil hole in a clutch shaft, enters a sealed area between a shell and a piston from the oil inlet, pressure in the sealed area rises along with continuous injection of the hydraulic oil, the piston is pushed to move rightwards, at the moment, an inner pressing plate and a clutch friction plate assembly push an outer pressing plate under the pushing of the piston, a disc spring is pressed on a hole check ring until the disc spring is pressed flat (a rubber return block is also compressed), meanwhile, the piston also pushes a return spring, and the shaft check ring limits the disc spring. When the clutch friction plate assembly, the inner pressing plate and the outer pressing plate are tightly pressed on the disc spring, friction torque is generated among the inner pressing plate, the outer pressing plate and the clutch friction plate assembly, the driving shaft drives the hub to rotate, the hub drives the clutch friction plate assembly to rotate through the outer spline, under the action of the friction torque, the clutch friction plate assembly drives the inner pressing plate and the outer pressing plate to rotate, the inner pressing plate and the outer pressing plate drive the shell and the clutch shaft to rotate through the lugs, the clutch shaft drives the output power shaft to rotate through the outer spline, power is output to a machine tool to be carried, and operation is started; when the operation of the agricultural implement needs to be stopped, an electromagnetic valve stop button is started, the electromagnetic valve is reversed, hydraulic oil stops inputting, an oil return path is connected, the hydraulic oil in the clutch flows back to an oil tank under the action of a disc spring and a return spring, a piston is pushed to reset, the piston pushes a top pin, the top pin overcomes the elastic force of a wave spring, under the limit of a shaft retainer ring I, a left brake disc assembly and a right brake disc assembly are tightly pressed with a brake plate to form a braking friction torque, the brake plate is fixedly connected with a gearbox body through a pin, under the action of the braking friction torque, the shell and the clutch shaft quickly stop rotating, an output power shaft also stops rotating, and the agricultural implement stops working.
The left end of the clutch shaft is provided with a left brake disc assembly, a brake plate, a wave spring and a right brake disc assembly in sequence on an external spline close to the shell, three ejector pins are uniformly distributed on the left end surface of the shell in the circumferential direction, a piston inner hole is sleeved on the clutch shaft, the ejector pins penetrate through the end surface of the inner cavity of the shell and are attached to the left end surface of the piston, a return spring is further sleeved on the clutch shaft, and the left end of the return spring is tightly attached to the lower end surface of the right side of the piston; the purpose of this is: after the piston returns, the elastic force of the return spring pushes the piston and the ejector pin to overcome the elastic force of the wave spring to tightly press the left and right brake disc assembly parts and the brake plate, so that a brake friction torque is formed between the brake plate and the left and right brake disc assembly parts, the shell is quickly stopped to rotate, the rotation inertia of the shell is eliminated, and the agricultural implement stops working.
An outer pressing plate is attached to the right end of the clutch friction plate assembly, a disc spring is arranged at the right end of the outer pressing plate, and a hole check ring is arranged at the right end of the disc spring; a shaft check ring I is arranged on the left side of the left brake disc assembly; the purpose of this is: the retainer ring for the through hole is used for limiting the axial movement of the inner pressure plate, the clutch friction plate assembly, the outer pressure plate and the disc spring; the left brake disc assembly, the brake plate, the wave spring and the right brake disc assembly at the left end of the clutch shaft are limited through the shaft check ring I.
The clutch friction plate assembly comprises a clutch friction plate assembly and an inner pressing plate, the clutch friction plate assembly and the inner pressing plate are sequentially and alternately installed, the clutch friction plate assembly is in splined connection with the periphery of the hub, the inner pressing plate is tightly attached to the upper end face of the right side of the piston, a rubber return block is arranged between the inner pressing plates, a plurality of grooves are uniformly formed in the shell along the periphery, a plurality of lugs are arranged on the peripheries of the inner pressing plate and the outer pressing plate, and the lugs are fixedly connected with the grooves formed in the shell; the purpose of this is: the rubber return block ensures that the distance between the two inner pressure plates is greater than the thickness of the clutch friction plate assembly, effectively prevents the clutch friction plate assembly from being in a semi-separation state, ensures a certain gap between the two when the clutch friction plate assembly is in no load, and can not generate friction, thereby prolonging the service life of the friction plate.
The surface of the clutch friction plate assembly is provided with a waffle grid groove or a parallel groove; the purpose of this is: the friction plate is a core part in the power output wet clutch, plays a decisive role in the performance of the whole clutch, the tractor power output wet clutch is arranged in a sealed transmission case, the heat dissipation condition is poor in working, the surface of a clutch friction plate assembly adopts a waffle groove or parallel groove process, heat between the friction plates is rapidly taken away through hydraulic oil, and the heat dissipation effect of the friction plates is favorably improved; each friction plate is stressed uniformly, and abrasion among the friction plates is reduced; the oil grooves with a certain depth are formed in the surfaces of the friction plates, so that the oil film can be cut off rapidly, the friction factor is improved, and the combination and separation of the friction plates and the flushing of abrasive dust are facilitated; under the conditions of high rotating speed and low power viscosity, the oil grooves on the surface of the friction plate are favorable for reducing belt row torque; thereby prolonging the service life of the friction plate.
A hydraulic oil hole is formed between the clutch shaft and the left side of the inner cavity of the shell, and the clutch shaft is provided with a lubricating oil hole at a position close to the wave spring and the return spring respectively; the purpose of this is: the clutch needs to be provided with a set of hydraulic system and a lubricating system or connected to other systems in parallel, hydraulic oil and lubricating oil are clean and cannot contain any impurities, otherwise, the internal oil circuit is blocked, and the normal operation of the clutch is influenced; lubricating oil flows to the space between the clutch friction plate assembly and the left and right brake disc assemblies through the lubricating oil holes in the shell, so that heat between the friction plates is taken away, the clutch is prevented from being too high in temperature, and the service life of the clutch is prolonged.
The utility model has the beneficial effects that: the utility model provides a novel wet clutch for a middle and small horsepower tractor, which is compact in structure, good in heat dissipation, simple to operate, convenient to install, small in inertia, capable of ensuring that the clutch with the same size can be ensured only by adjusting the number of clutch friction plate combined pieces according to the output torque, and capable of meeting the market demands, and has a wide market prospect.
Drawings
Fig. 1 is a schematic view of the structure of a wet clutch according to the present invention.
The labels in the figure are: 1. a clutch shaft; 2. a housing; 3. a left brake disc assembly; 4. a brake plate; 5. a right brake disc assembly; 6. a knock pin; 7. an O-shaped ring; 8. a piston; 9. a piston inner sealing ring; 10. the piston outer sealing ring; 11. an inner pressure plate; 12. a rubber return block; 13. a clutch friction plate pack; 14. an outer pressing plate; 15. a hub; 16. a bearing; 17. a shaft retainer ring I; 18. a wave spring; 19. a return spring; 20. a retainer ring for a bore; 21. a disc spring; 22. a spring collar; 23. a retainer ring for a shaft; 24. a gasket; 25. a hydraulic oil hole; 26. and (4) lubricating oil holes.
Detailed Description
The following detailed description of embodiments of the utility model is provided in connection with the accompanying drawings.
As shown in the figure, the novel wet clutch for the middle and small horsepower tractor comprises a clutch shaft 1 and a shell 2; the shell 2 and the clutch shaft 1 are of an integral structure, a left brake disc closing piece 3, a brake plate 4, a wave spring 18 and a right brake disc closing piece 5 are sequentially assembled on an external spline at the left end of the clutch shaft 1 close to the shell 2, three ejector pins 6 are uniformly distributed in the circumferential direction of the left end surface of the shell 2 and close to the right end surface of the right brake disc closing piece 5, an inner hole of a piston 8 is sleeved on the clutch shaft 1, the ejector pins 6 penetrate through the end surface of an inner cavity of the shell 2 and are attached to the left end surface of the piston 8, a return spring 19 is further sleeved on the clutch shaft 2, the left end of the return spring 19 is tightly attached to the lower end surface of the right side of the piston 8, a spring retainer ring 22, a shaft retainer ring 23 and a gasket 24 are sequentially arranged at the right end of the clutch shaft 1, a bearing 16 is sleeved on the right end of the bearing 16, a hub 15 is arranged on the outer side of the bearing 16, the clutch shaft 1 is inserted into the inner cavity of the hub 15, and the return spring 19 and the bearing 16 are completely embedded into the inner cavity of the hub 15, the outer periphery of the hub 15 is connected with a clutch friction plate assembly through a spline, the left end of the clutch friction plate assembly is attached to the upper end face of the right side of the piston 8, an outer pressing plate 14 is attached to the right end of the clutch friction plate assembly, a disc spring 21 is arranged at the right end of the outer pressing plate 14, and a hole retainer ring 20 is arranged at the right end of the disc spring 21; and a shaft check ring I17 is arranged on the left side of the left brake disc assembly 3.
Clutch friction disc subassembly includes inner pressure plate 11 and clutch friction disc closes piece 13, inner pressure plate 11 and clutch friction disc closes piece 13 closed stack dress in turn in proper order, clutch friction disc closes piece 13 and 15 periphery splined connection of wheel hub, it is inner pressure plate 11 to hug closely with 8 right sides up end of piston, be provided with rubber return block 12 between the inner pressure plate 11, casing 2 is gone up and has been seted up multichannel recess along the periphery equipartition, inner pressure plate 11, outer clamp plate 14's periphery is provided with many places lug, the recess fixed connection of seting up on lug and the casing 2.
The surface of the clutch friction assembly 13 is provided with waffle grooves or parallel grooves.
And an inner piston sealing ring 9 and an outer piston sealing ring 10 for sealing hydraulic oil are arranged on the inner diameter and the outer diameter of the left end of the piston 8, and an O-shaped ring 7 for sealing hydraulic oil is arranged in the middle of the outer diameter of the ejector pin 6.
A hydraulic oil hole 25 is formed between the clutch shaft 1, which is close to the left end face of the piston 8, and the left side of the inner cavity of the shell 2, and lubricating oil holes 26 are respectively formed at the positions, which are close to the wave spring 18 and the return spring 19, of the clutch shaft 1.
When the tractor works, the power of an engine is input into the wet power output clutch through the driving shaft, the brake plate 4 is fixedly connected to the gearbox body through the pin, the electromagnetic valve is installed at the rear end of the clutch, and a driver controls the on-off of the electromagnetic valve according to actual work requirements, so that the wet power output clutch is combined or separated, and the output state of the power of the engine is controlled. When the engine starts to work, the driving shaft starts to rotate, the hub 15 is driven to rotate through the spline shaft, the outer spline of the hub 15 drives the clutch friction plate assembly 13 to rotate, and at the moment, the inner pressing plate 11 and the outer pressing plate 14 are static and no power is output backwards. When power output is needed to drive an agricultural implement to work, an electromagnetic valve control button is started, hydraulic oil enters an oil inlet of a clutch through a driving shaft axis hole and a hydraulic oil hole 25 in a clutch shaft 1, enters a sealed area between a shell 2 and a piston 8 from the oil inlet, the pressure in the sealed area rises along with continuous injection of the hydraulic oil, the piston 8 is pushed to move rightwards, at the moment, an inner pressing plate 11 and a clutch friction plate assembly 13 push an outer pressing plate 14 under the pushing of the piston 8, a disc spring 21 is pressed on a hole retainer ring 20 until the disc spring is pressed flat, at the moment, a rubber return block 12 is also compressed, meanwhile, the piston 8 also pushes a return spring 19, and the shaft retainer ring 17 limits the hole retainer ring. After the clutch friction plate assembly 13, the inner pressing plate 11 and the outer pressing plate 14 are tightly pressed on the disc spring 21, friction torque is generated among the inner pressing plate 11, the outer pressing plate 14 and the clutch friction plate assembly 13, the driving shaft drives the hub 15 to rotate, the hub 15 drives the clutch friction plate assembly 13 to rotate through the external spline, under the action of the friction torque, the clutch friction plate assembly 13 drives the inner pressing plate 11 and the outer pressing plate 13 to rotate, the inner pressing plate 11 and the outer pressing plate 13 drive the shell 2 and the clutch shaft 1 to rotate through the lugs, the clutch shaft 1 drives the output power shaft to rotate through the external spline, power is output to a machine tool which is carried, and operation is started; when the operation of the agricultural implement needs to be stopped, an electromagnetic valve stop button is started, the electromagnetic valve is reversed, hydraulic oil stops being input, an oil return path is connected, the hydraulic oil in the clutch flows back to an oil tank under the action of a disc spring 21 and a return spring 19, a piston 8 is pushed to reset, the piston 8 pushes a top pin 6, the top pin 6 overcomes the elastic force of a wave spring 18, a left brake disc assembly 3 and a right brake disc assembly 4 are pressed against a brake plate 4 under the limit of a shaft check ring I17 to form a braking friction moment, the brake plate 4 is fixedly connected with a gearbox body through a pin, under the action of the braking friction moment, the shell 2 and the clutch shaft 1 stop rotating rapidly, an output power shaft also stops rotating, and the agricultural implement stops working.
Claims (5)
1. The utility model provides a novel wet clutch is used to medium and small horsepower tractor which characterized in that: comprises a clutch shaft and a housing; the shell and the clutch shaft are of an integral structure, a left brake disc assembly, a brake plate, a wave spring and a right brake disc assembly are sequentially assembled on an external spline at the left end of the clutch shaft close to the shell, three knock pins are uniformly distributed on the circumferential direction of the left end surface of the shell, a piston inner hole is sleeved on the clutch shaft, the knock pins penetrate through the end surface of an inner cavity of the shell and are jointed with the left end surface of the piston, a return spring is further sleeved on the clutch shaft, the left end of the return spring is tightly attached to the lower end surface of the right side of the piston, a spring retainer ring, a shaft retainer ring and a gasket are sequentially arranged at the right end of the return spring, a bearing is sleeved at the right end of the clutch shaft, a hub is arranged outside the bearing, the clutch shaft is inserted into the inner cavity of the hub, the return spring and the bearing are completely embedded into the inner cavity of the hub, a clutch friction disc assembly is connected with the external spline of the hub, and the left end of the clutch friction disc assembly is jointed with the upper end surface of the right side of the piston, an outer pressing plate is attached to the right end of the clutch friction plate assembly, a disc spring is arranged at the right end of the outer pressing plate, and a hole check ring is arranged at the right end of the disc spring; and a shaft check ring I is arranged on the left side of the left brake disc assembly.
2. The new wet clutch for middle and small horsepower tractors according to claim 1, wherein: the clutch friction plate assembly comprises a clutch friction plate assembly and an inner pressing plate, the clutch friction plate assembly and the inner pressing plate are sequentially and alternately installed, the clutch friction plate assembly is connected with a hub periphery spline, the inner pressing plate is tightly attached to the upper end face of the right side of the piston, a rubber return block is arranged between the inner pressing plates, a plurality of grooves are formed in the shell along the periphery uniformly, a plurality of lugs are arranged on the periphery of the inner pressing plate and the periphery of the outer pressing plate, and the lugs are fixedly connected with the grooves formed in the shell.
3. The new wet clutch for middle and small horsepower tractors according to claim 2, wherein: the surface of the friction part of the clutch is provided with a waffle groove or a parallel groove.
4. The new wet clutch for middle and small horsepower tractors according to claim 1, wherein: and an inner piston sealing ring and an outer piston sealing ring which are used for sealing hydraulic oil are arranged on the inner diameter and the outer diameter of the left end of the piston, and an O-shaped ring which is used for sealing hydraulic oil is arranged in the middle of the outer diameter of the ejector pin.
5. The new wet clutch for middle and small horsepower tractors according to claim 1, wherein: a hydraulic oil hole is formed between the clutch shaft and the left side of the inner cavity of the shell, and the clutch shaft is close to the wave spring and the return spring, and lubricating oil holes are formed in the positions of the clutch shaft, close to the left end face of the piston, and the left side of the inner cavity of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123044910.4U CN216407544U (en) | 2021-12-07 | 2021-12-07 | Novel wet clutch for middle and small horsepower tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123044910.4U CN216407544U (en) | 2021-12-07 | 2021-12-07 | Novel wet clutch for middle and small horsepower tractor |
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| Publication Number | Publication Date |
|---|---|
| CN216407544U true CN216407544U (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123044910.4U Active CN216407544U (en) | 2021-12-07 | 2021-12-07 | Novel wet clutch for middle and small horsepower tractor |
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| Country | Link |
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| CN (1) | CN216407544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116022675A (en) * | 2022-12-27 | 2023-04-28 | 平阳县鹏伟机械有限责任公司 | Wet clutch for winch |
-
2021
- 2021-12-07 CN CN202123044910.4U patent/CN216407544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116022675A (en) * | 2022-12-27 | 2023-04-28 | 平阳县鹏伟机械有限责任公司 | Wet clutch for winch |
| CN116022675B (en) * | 2022-12-27 | 2024-05-03 | 平阳县鹏伟机械有限责任公司 | Wet clutch for winch |
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