CN-121977026-A - Heavy-duty clutch device

Abstract

The invention discloses a heavy-load clutch device which comprises a shell, an end cover, a guide assembly, a piston and a sealing unit, wherein the end cover and the piston are correspondingly arranged in the shell, the end cover is connected with the piston through the guide assembly, the guide assembly can guide the piston to reciprocate along the axis of the shell, and the sealing unit comprises a retainer ring assembly which is arranged between the shell and the piston to support the piston and inhibit radial deflection of the piston. According to the heavy-load clutch device, a dynamic deflection prevention system is constructed through the guide component and the check ring component, the guide component provides accurate axial movement track constraint for the piston, the check ring component is filled in the piston and the shell, radial deflection of the piston under the high-temperature and high-pressure working condition is effectively restrained, linearity and accuracy of movement of the piston are ensured, meanwhile, dynamic impact and deflection risks of the sealing component are reduced, abrasion of the sealing ring and hydraulic oil leakage are reduced, and service life and reliability of the clutch device under a heavy-load environment are improved.

Inventors

• HUANG TAO
• ZHANG JUAN
• Yu Xunhua
• YANG YANG
• XIONG DEPING
• ZHANG SHENGHUA
• TU WENQI
• Zong Changshan
• DING JIAO
• ZHANG HAO
• QU TIANMING
• HUANG JIAN
• XI YUNQIAO
• LIU WENTAO
• ZHANG CHAO
• HU JUN
• ZHU XIANG

Assignees

• 宜昌测试技术研究所

Dates

Publication Date

20260505

Application Date

20251216

Claims (12)

1. 1. The utility model provides a heavy load clutch, its characterized in that includes casing, end cover, direction subassembly, piston and sealing unit, and the end cover corresponds with the piston and sets up in the casing, and the end cover passes through direction subassembly with the piston and is connected, and direction subassembly can guide the piston along the axis reciprocating motion of casing, and sealing unit includes the retaining ring subassembly, and the retaining ring subassembly sets up between casing and piston to support the piston, restrain its radial offset.
2. 2. The heavy-duty clutch device according to claim 1, wherein the first chamber, the second chamber and the third chamber are sequentially communicated and arranged in the shell, the diameter of the first chamber is larger than that of the second chamber, the diameter of the second chamber is larger than that of the third chamber, the end cover is correspondingly arranged in the first chamber, and the piston is arranged in the second chamber and the third chamber.
3. 3. The heavy duty clutch of claim 2, wherein the collar assembly includes first and second correspondingly disposed collars, the first collar disposed in the second chamber and the second collar disposed in the third chamber.
4. 4. The heavy duty clutch of claim 1, wherein the sealing unit further comprises a first sealing assembly and a second sealing assembly, the second sealing assembly being disposed outboard of the first sealing assembly, the retainer ring assembly being disposed between the first sealing assembly and the second sealing assembly.
5. 5. The heavy-duty clutch of claim 2, further comprising a hydraulic chamber enclosed by the first seal assembly, the housing, and the piston, the first seal assembly having a circumferential groove formed therein, the circumferential groove being disposed on a side of the first seal assembly adjacent the hydraulic chamber.
6. 6. The heavy duty clutch of claim 4, wherein the retainer assembly is made of polytetrafluoroethylene, the first seal assembly is made of fluororubber, and the second seal assembly is made of polyurethane.
7. 7. The heavy-duty clutch of claim 2, wherein the guide assembly comprises a spring, a guide rod disposed on the end cap, and a guide hole and a spring hole disposed on the piston, the plurality of guide holes being staggered with respect to the plurality of spring holes, the guide rod being disposed with respect to the guide hole, the spring being disposed with respect to the spring hole.
8. 8. The heavy duty clutch of claim 7, further comprising a spring collar abutting a side of the end cap facing away from the piston.
9. 9. The heavy-duty clutch device according to any one of claims 1 to 8, further comprising a gear shaft, a clutch plate, and a drum, the gear shaft penetrating the piston, the drum being disposed outside the housing, one end of the gear shaft remote from the end cap being connected to the clutch plate, one end of the drum near the gear shaft being connected to the clutch plate, the plurality of clutch plates being alternately stacked with the plurality of clutch plates.
10. 10. The heavy duty clutch of claim 4, wherein the first seal assembly includes a lip portion disposed in abutment with the housing, the lip portion having a width of 0.6mm and a surface roughness of 2 μm.
11. 11. The heavy duty clutch of claim 7, wherein the spring holes have a depth error of less than 0.05mm and the springs have a spring force value that varies by less than 2% from their average spring force value for the same deflection.
12. 12. The heavy duty clutch of claim 7, wherein the roundness tolerance of the first chamber is 0.005mm, the roughness of the first chamber side adjacent to the second chamber is 0.4 μm, the perpendicularity tolerance between the first chamber side adjacent to the second chamber and the first reference surface of the first chamber is 0.05mm, the roughness of the end cover side adjacent to the second chamber is 0.4 μm, the perpendicularity tolerance between the reference surface of the end cover and each guide bar is 0.02mm, the roughness of each guide bar is 0.2 μm, the coaxiality tolerance of the second chamber and the third chamber relative to the first chamber is 0.03mm, the roughness of the second chamber and the third chamber side adjacent to the piston is 0.2 μm, and the roundness tolerance of the second chamber and the third chamber is 0.002mm.

Description

Heavy-duty clutch device Technical Field The invention relates to the field of clutch devices, in particular to a heavy-duty clutch device. Background At present, although the clutch device in the prior art realizes the joint stability through hydraulic control, the clutch device is designed to expose the defect that deflection is easy to occur when facing the extreme working conditions of heavy load, high temperature and high frequency. Specifically, when the clutch system in the prior art is applied to a heavy-duty working condition, the piston needs to do high-frequency reciprocating motion under the working condition of high temperature and high pressure, even if the slight piston installation error also causes severe abrasion of the sealing ring, the sealing ring on the piston is in uneven contact with the inner wall of the cavity, severe and uneven partial abrasion is generated, the sealing ring is accelerated to fail due to excessive extrusion deformation, the problems of eccentric abrasion and abnormal deformation are further aggravated in the high-temperature environment, finally, the hydraulic oil seal is invalid and serious leakage are caused, and the service life and the reliability of the clutch device under the heavy-duty working condition are greatly restricted. Disclosure of Invention The invention aims to provide a heavy-load clutch device, a dynamic deflection preventing system is constructed through a guide assembly and a check ring assembly, and the service life and reliability of the clutch device under a heavy-load environment are improved. The specific technical scheme is as follows: the utility model provides a heavy load clutch, includes casing, end cover, direction subassembly, piston and sealing unit, and the end cover corresponds with the piston and sets up in the casing, and the end cover passes through direction subassembly with the piston and is connected, and direction subassembly can guide the piston along the axis reciprocating motion of casing, and sealing unit includes the retaining ring subassembly, and the retaining ring subassembly sets up between casing and piston to support the piston, restrain its radial offset. Further, the first chamber, the second chamber and the third chamber are sequentially communicated and arranged in the shell, the diameter of the first chamber is larger than that of the second chamber, the diameter of the second chamber is larger than that of the third chamber, the end cover is correspondingly arranged in the first chamber, and the piston is arranged in the second chamber and the third chamber. Further, the check ring assembly comprises a first check ring and a second check ring which are correspondingly arranged, the first check ring is arranged in the second cavity, and the second check ring is arranged in the third cavity. Further, the sealing unit further comprises a first sealing component and a second sealing component, the second sealing component is arranged on the outer side of the first sealing component, and the check ring component is arranged between the first sealing component and the second sealing component. Further, the hydraulic device further comprises a hydraulic cavity, wherein the hydraulic cavity is formed by enclosing a first sealing component, a shell and a piston, an annular groove is formed in the first sealing component, and the annular groove is arranged on the side edge, close to the hydraulic cavity, of the first sealing component. Further, the retainer ring assembly is made of polytetrafluoroethylene, the first sealing assembly is made of fluororubber, and the second sealing assembly is made of polyurethane. Further, the guide assembly comprises a spring, a guide rod arranged on the end cover, a guide hole and a spring hole, wherein the guide hole and the spring hole are arranged on the piston, the guide holes and the spring holes are arranged in a staggered mode, the guide rod and the guide hole are correspondingly arranged, and the spring hole are correspondingly arranged. Further, the piston rod further comprises a spring retainer ring, and the spring retainer ring is abutted against one side of the end cover, which is opposite to the piston. Further, still include gear shaft, clutch friction plate, clutch slide and rotary drum, the gear shaft wears to locate the piston, and the rotary drum sets up the outside at the casing, and the one end that the end cover was kept away from to the gear shaft is connected with the clutch friction plate, and the one end that the rotary drum is close to the gear shaft is connected with the clutch slide, and a plurality of clutch friction plates and a plurality of clutch slide range upon range of setting in turn. Further, the first seal assembly includes a lip portion provided in abutment with the housing, the lip portion having a width of 0.6mm and a surface roughness of 2 μm. Further, the depth error of each spring hole is smaller than 0.05mm, and the difference of the e