Gear shifting buffer structure of loader gearbox clutch

Abstract

The utility model discloses a gear shifting buffer structure of a loader gearbox clutch. A shaft of a clutch drum body assembly is provided with a gear oil duct, and a piston is arranged in an oil cylinder of the clutch drum body assembly; the inner circle of the outer sealing ring is arranged on the outer circle of the piston; the outer circle of the outer sealing ring is matched with the inner circle of the oil cylinder; the inner sealing ring is arranged on the inner circle of the piston; the inner circle of the inner sealing ring is matched with the outer circle of the shaft; a gasket is arranged on the left side of the small belleville spring set, a check ring is arranged on the left side of the gasket, and an inner ring of the check ring is arranged in a check ring groove of the shaft; the large belleville spring is arranged on the outer end face of the left side of the piston; the driven friction plates and the driving friction plates are alternately arranged and installed on the left side of the large belleville spring. The device is simple and compact in structure, convenient to manufacture and assemble and reliable to use, and solves the problems that in the prior art, a piston directly and rapidly presses the friction plate, gear shifting impact is large, friction plate accelerated damage is easily caused, and the comfort of a driver is affected.

Description

Technical Field

[0001] The utility model relates to a loader gearbox assembly, in particular to a gear shift buffer structure of a clutch of a loader gearbox. Background Art

[0002] The loader gearbox assembly is one of the core transmission components of the loader. It is a mechanism used to change the speed and torque from the engine, and it can change the transmission ratio between the input shaft and the output shaft. When the gearbox shifts, the oil enters the clutch through the oil channel, pushing the piston to quickly press the friction plate to achieve gear switching. In the prior art, the piston directly and quickly presses the friction plate, resulting in a large gear shift shock, accelerating the damage of the friction plate, and affecting the comfort of the driver. Summary of the invention

[0003] The utility model aims to provide a loader gearbox clutch shift buffer structure which is simple and compact in structure, easy to manufacture and assemble, and reliable in use, so as to solve the problem in the prior art that the piston directly and quickly presses the friction plate, resulting in large shift impact, easily causing accelerated damage to the friction plate and affecting the driver's comfort.

[0004] To achieve the above purpose, the utility model loader gearbox clutch shift buffer structure comprises a driven friction plate 1, an active friction plate 2, a large disc spring 3, an oil drain hole 4, a clutch drum assembly 5, an outer seal ring 6, a piston 7, an inner seal ring 8, a gear oil passage 9, a small disc spring group 10, a gasket 11 and a retaining ring 12; the clutch drum assembly 5 comprises an oil cylinder and a shaft, and the gear oil passage 9 is provided on the shaft; the piston 7 is installed in the oil cylinder of the clutch drum assembly 5; the inner circle of the outer seal ring 6 is installed on the outer circle of the piston 7, and the outer circle of the outer seal ring 6 is connected to the clutch drum assembly 5 The inner circle of the oil cylinder is matched; the inner sealing ring 8 is installed on the inner circle of the piston 7, and the inner circle of the inner sealing ring 8 is matched with the outer circle of the shaft of the clutch drum assembly 5; the large disc spring 3 is installed on the outer end surface of the left side of the piston 7; the driven friction plate 1 and the active friction plate 2 are arranged alternately and installed on the left side of the large disc spring 3; the small disc spring group 10 is installed on the inner end surface of the left side of the piston 7, a gasket 11 is installed on the left side of the small disc spring group 10, a retaining ring 12 is installed on the left side of the gasket 11, and the inner ring of the retaining ring 12 is installed in the retaining ring groove of the shaft of the clutch drum assembly 5.

[0005] An oil drain hole 4 is provided at the outer end of the piston 7 located on the right side of the large disc spring 3 .

[0006] The utility model discloses a loader gearbox clutch shift buffer structure, which has the following technical features and beneficial effects:

[0007] 1. By installing a large disc spring 3 on the left outer end surface of the piston 7, when the clutch is filled with oil, the piston 7 first pushes the large disc spring 3, and the large disc spring 3 is compressed to generate thrust to offset part of the thrust of the piston 7. As the gear pressure increases, the friction plate is gradually compressed to achieve gear switching and power output, which solves the problem in the prior art that the piston directly and quickly compresses the friction plate, resulting in a large gear shift shock, which easily causes accelerated damage to the friction plate and affects the driver's comfort.

[0008] 2. An oil drain hole 4 is arranged at the outer end of the piston 7 located on the right side of the large disc spring 3. When the piston 7 is engaged in the gear and pushes the large disc spring 3 to press the friction plate, the gear pressure can be ensured to be stable and reliable. When the gear is switched, the oil cavity formed by the piston 7 and the clutch drum assembly 5 quickly discharges oil, so that the friction plate is quickly disengaged, avoiding the friction plate from slipping, improving the reliability of the friction plate, and greatly improving the product quality.

[0009] 3. The structure is simple and compact, easy to process and assemble, and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a main cross-sectional schematic diagram of a loader gearbox clutch shift buffer structure.

[0011] Figure numerals: driven friction plate 1, active friction plate 2, large disc spring 3, oil drain hole 4, clutch drum assembly 5, outer sealing ring 6, piston 7, inner sealing ring 8, gear oil channel 9, small disc spring group 10, gasket 11, retaining ring 12. DETAILED DESCRIPTION

[0012] Figure 1As shown, the utility model loader gearbox clutch shift buffer structure comprises a driven friction plate 1, an active friction plate 2, a large disc spring 3, an oil drain hole 4, a clutch drum assembly 5, an outer seal ring 6, a piston 7, an inner seal ring 8, a gear oil passage 9, a small disc spring group 10, a gasket 11 and a retaining ring 12; the clutch drum assembly 5 comprises an oil cylinder and a shaft, and the shaft is provided with a gear oil passage 9; the piston 7 is installed in the oil cylinder of the clutch drum assembly 5; the inner circle of the outer seal ring 6 is installed on the outer circle of the piston 7, and the outer circle of the outer seal ring 6 matches with the inner circle of the oil cylinder of the clutch drum assembly 5; the inner seal ring 8 is installed on the inner circle of the piston 7, and the inner circle of the inner seal ring 8 matches with the outer circle of the shaft of the clutch drum assembly 5; The large disc spring 3 is installed on the outer end surface of the left side of the piston 7. When the clutch is filled with oil, the piston 7 first pushes the large disc spring 3. The large disc spring 3 is compressed to generate thrust to offset part of the thrust of the piston 7. As the gear pressure increases, the friction plate is gradually compressed to achieve gear switching and power output, avoiding accelerated damage to the friction plate, greatly improving product quality and driving comfort; the driven friction plate 1 and the active friction plate 2 are arranged alternately and installed on the left side of the large disc spring 3; the small disc spring group 10 is installed on the inner end surface of the left side of the piston 7, and a gasket 11 is installed on the left side of the small disc spring group 10, and a retaining ring 12 is installed on the left side of the gasket 11, and the inner ring of the retaining ring 12 is installed in the retaining ring groove of the shaft of the clutch drum assembly 5.

[0013] An oil drain hole 4 is provided at the outer end of the piston 7 located on the right side of the large disc spring 3. When the gear is engaged, the piston 7 pushes the large disc spring 3 to press the friction plate, which can ensure the stability and reliability of the gear pressure; when the gear is switched, the oil chamber formed by the piston 7 and the clutch drum assembly 5 quickly discharges oil, so that the friction plate is quickly disengaged, which can effectively prevent the friction plate from slipping, improve the reliability of the friction plate, and greatly improve the product quality.

[0014] The utility model solves the problem that the piston directly and quickly presses the friction plate, the gear shifting impact is large, the friction plate is easily damaged and the driver feels uncomfortable, thus greatly improving product quality and driving comfort.

Claims

1. A loader gearbox clutch shift buffer structure, comprising a driven friction plate (1), an active friction plate (2), a clutch drum assembly (5), an outer sealing ring (6), a piston (7), an inner sealing ring (8), a gear oil passage (9), a small disc spring group (10), a gasket (11) and a retaining ring (12); the clutch drum assembly (5) comprises an oil cylinder and a shaft, the shaft being provided with a gear oil passage (9); the piston (7) being mounted in the oil cylinder of the clutch drum assembly (5); the inner circle of the outer sealing ring (6) being mounted on the piston (7) On the outer circle, the outer circle of the outer sealing ring (6) matches with the inner circle of the oil cylinder of the clutch drum assembly (5); the inner sealing ring (8) is installed on the inner circle of the piston (7), and the inner circle of the inner sealing ring (8) matches with the outer circle of the shaft of the clutch drum assembly (5); the small disc spring group (10) is installed on the inner end surface of the left side of the piston (7), a gasket (11) is installed on the left side of the small disc spring group (10), a retaining ring (12) is installed on the left side of the gasket (11), and the inner circle of the retaining ring (12) is installed in the retaining ring groove of the shaft of the clutch drum assembly (5); Its characteristics are: It also includes a large disc spring (3) which is mounted on the outer end surface of the left side of the piston (7); the driven friction plate (1) and the active friction plate (2) are arranged alternately and mounted on the left side of the large disc spring (3).

2. The loader transmission clutch shift buffer structure as claimed in claim 1, Its characteristics are: An oil drain hole (4) is provided at the outer end of the piston (7) located on the right side of the large disc spring (3).

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