一种装载机变速箱离合器结构

Abstract

本实用新型公开了一种装载机变速箱离合器结构：离合器轴和离合器壳体之间形成内部油缸容腔；活塞设在内部油缸容腔底部，离合器轴和离合器壳体之间为双止口过盈配合并采用焊接的方式连接；活塞与离合器壳体之间设有大O形圈和外密封环；活塞与离合器轴之间设有小O形圈和内密封环，构成O形圈和密封环组合密封结构，使活塞与离合器壳体之间、活塞与离合器轴之间形成稳定有效的密闭空间。本实用新型通过采用O形圈和密封环组合密封，并在离合器壳体与离合器轴之间采用双止口定位焊接，结构简单紧凑，活塞密封效果好，使用可靠，解决了现有技术活塞采用单独O形圈密封效果不稳定、承压能力差易造成离合器扭矩传递性能下降而影响变速箱寿命的问题。

Claims

1. A loader gearbox clutch structure, comprising a clutch shaft (1), a clutch housing (2), a piston (3), a large O-ring (4), an outer sealing ring (5), a small O-ring (6), an inner sealing ring (7), a driven friction plate (8), a driving friction plate (9), a retaining ring (10), a friction plate baffle (11), a spring seat (12), a coil spring (13), a spring baffle (14), a spring retainer (15), a spacer ring (16), a thrust ring (17), an elastic pin (18), a hub gear (19), a needle roller bearing (20), and a retainer (21); An internal hydraulic cylinder cavity is formed between the clutch shaft (1) and the clutch housing (2); the piston (3) is located at the bottom of the internal hydraulic cylinder cavity, and near the right end of the piston (3) are arranged a plurality of driven friction plates (8), a plurality of active friction plates (9), a friction plate baffle (11), and a retaining ring (10). The plurality of driven friction plates (8) and the plurality of active friction plates (9) are arranged alternately in sequence, and there is a gap between them and the friction plate baffle (11). They are confined inside the clutch housing (2) by the retaining ring (10); the right end of the piston (3) is also provided with a spring seat (12) and a spiral spring. Spring (13), spring baffle (14), and spring snap ring (15) to limit the pre-compressed helical spring (13) to the clutch shaft (1); the hub gear (19) is located in the internal cavity, its left end cooperates with the active friction plate (9), and its right end is provided with a needle roller bearing (20) between it and the clutch shaft (1). Both ends of the needle roller bearing (20) are provided with thrust rings (17). The thrust ring (17) is provided with a relief groove for the elastic pin (18), and the angular displacement of the thrust ring (17) is limited by the elastic pin (18). The left thrust ring (17) and the spring snap ring (15) are provided with a spacer (16), and the right side of the thrust ring (17) is provided with a retaining ring (21) for axial limiting; the clutch shaft (1) is provided with a lubrication oil passage (1.1) and a gear oil passage (1.4), the lubrication oil passage (1.1) is provided with a lubrication oil hole I (1.2) for lubricating the driving friction plate (9) and the driven friction plate (8) of the spring seat (12), and the lubrication oil passage (1.1) is provided with a lubrication oil hole II (1.3) for lubricating the needle roller bearing (20); the gear oil passage (1.4) extends to the space between the internal cavity and the piston (3); the characteristic is that, The clutch shaft (1) and the clutch housing (2) are connected by a double stop interference fit and by welding; a large O-ring (4) and an outer sealing ring (5) are provided between the piston (3) and the clutch housing (2); a small O-ring (6) and an inner sealing ring (7) are provided between the piston (3) and the clutch shaft (1), forming a sealing structure of O-ring and sealing ring combination, so that a stable and effective sealed space is formed between the piston (3) and the clutch housing (2) and between the piston (3) and the clutch shaft (1).

2. The loader transmission clutch arrangement of claim 1, wherein, Both the outer sealing ring (5) and the inner sealing ring (7) are closed-type polytetrafluoroethylene sealing rings.

Images