Loader drive axle input flange structure

Abstract

The utility model discloses an input flange structure of a loader drive axle. The input flange structure comprises a bearing seat, a bearing outer ring, a sealing cover, an oil seal, an input flange, a driving spiral bevel gear and a bearing inner ring, an outer ring of the bearing is assembled on the bearing seat, and an inner ring of the bearing is assembled on the driving spiral bevel gear; the oil seal is assembled between the sealing cover and the input flange, and the input flange is sleeved into the driving spiral bevel gear and is matched with the oil seal and the bearing inner ring; the sealing cover covers the bearing seat; a boss spigot with the height of 5mm is arranged at the lower end of the input flange; and the boss spigot is matched with the bearing inner ring to form a section of matching surface with the height of 5mm. The spline assembly is simple and compact in structure, low in manufacturing and maintenance cost and long in service life, and solves the problems that in the prior art, a gap between splines is prone to causing fracture of the splines, and an oil seal on a flange deforms due to continuous shaking of an input flange to cause oil leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of a main reducer assembly of a loader drive axle, in particular to an input flange structure of a loader drive axle. Background Art

[0002] The power input of the main reducer assembly of wheel loaders in the domestic engineering machinery industry generally adopts flange transmission, that is, the spline inside the input flange is meshed with the spline of the active spiral bevel gear to drive the active spiral bevel gear to rotate. The defects of the input flange structure of the loader drive axle are: because the loader often works in a harsh environment, the loader is in a continuous shaking state during operation. At this time, there is a gap between the splines, causing the input flange to rotate with the loader to continuously shake slightly, causing the splines of the input flange to be unevenly stressed, which is easy to cause the splines to break. At the same time, the oil seal on the flange will also be deformed due to the continuous shaking of the input flange, which will eventually lead to oil leakage. Summary of the invention

[0003] The purpose of the utility model is to solve the above defects and provide a loader drive axle input flange structure with simple and compact structure, low manufacturing and maintenance costs and long service life, so as to solve the problems in the prior art that the gap between the splines easily causes the splines to break and the oil seal on the flange is deformed due to the continuous shaking of the input flange, resulting in oil leakage.

[0004] To achieve the above purpose, the input flange structure of the loader drive axle of the utility model includes a bearing seat 1, a bearing outer ring 2-1, a sealing cover 3, an oil seal 4, an input flange 5, an active spiral bevel gear 6 and a bearing inner ring 2-2; the bearing outer ring 2-1 is assembled on the bearing seat 1, and the bearing inner ring 2-2 is assembled on the active spiral bevel gear 6; the oil seal 4 is assembled between the sealing cover 3 and the input flange 5, the input flange 5 is sleeved into the active spiral bevel gear 6, and cooperates with the oil seal 4 and the bearing inner ring 2-2; the sealing cover 3 is covered on the bearing seat 1; a boss stop is provided at the lower end of the input flange 5, and the boss stop cooperates with the bearing inner ring 2-2 to form a mating surface.

[0005] The boss stop height at the lower end of the input flange 5 is 5 mm.

[0006] The utility model loader drive axle input flange structure has the following technical characteristics and beneficial effects:

[0007] 1. A 5mm high mating stop is added to the lower end of the input flange, so that the input flange and the inner ring of the bearing assembled on the active spiral bevel gear form a mating surface, so that the movement of the input flange in other directions is restricted and it can only perform rotational movement, which can effectively reduce the shaking of the input flange during rotation, greatly improve the product quality and reliability, and effectively solve the problem of the prior art that the gap between the splines easily causes the splines to break and the oil seal on the flange is deformed due to the continuous shaking of the input flange, resulting in oil leakage.

[0008] 2. Simple and compact structure, low production and maintenance costs, and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a schematic diagram of the main cross-sectional structure of the input flange structure of a loader drive axle.

[0010] Figure 2 yes Figure 1 Schematic diagram of the partially enlarged structure.

[0011] Figure numerals: bearing seat 1, bearing outer ring 2-1, sealing cover 3, oil seal 4, input flange 5, active spiral bevel gear 6, bearing inner ring 2-2. DETAILED DESCRIPTION

[0012] The specific implementation of the input flange structure of the loader drive axle of the utility model is further described in detail below with reference to the accompanying drawings.

[0013] Figure 1-Figure 2 As shown, the input flange structure of the loader drive axle of the utility model includes a bearing seat 1, a bearing outer ring 2-1, a sealing cover 3, an oil seal 4, an input flange 5, an active spiral bevel gear 6 and a bearing inner ring 2-2; the bearing outer ring 2-1 is assembled on the bearing seat 1, and the bearing inner ring 2-2 is assembled on the active spiral bevel gear 6; the oil seal 4 is assembled between the sealing cover 3 and the input flange 5, and the input flange 5 is sleeved into the active spiral bevel gear 6 and cooperates with the oil seal 4 and the bearing inner ring 2-2; the sealing cover 3 is covered on the bearing seat 1; the lower end of the input flange 5 is provided with a boss stop with a height of 5mm, and the boss stop cooperates with the bearing inner ring 2-2 to form a 5mm high mating surface.

[0014] The input flange structure of the loader drive axle of the utility model can effectively reduce the shaking of the input flange during rotation by arranging a 5mm high stop at the lower end of the input flange to cooperate with the inner ring of the bearing, thereby solving the problems in the prior art that the gap between the splines easily causes the splines to break and the oil seal on the flange is deformed due to the continuous shaking of the input flange, resulting in oil leakage, thereby greatly improving product quality and reliability.

Claims

1. A loader drive axle input flange structure, comprising a bearing seat (1), a bearing outer ring (2-1), a sealing cover (3), an oil seal (4), an input flange (5), an active spiral bevel gear (6) and a bearing inner ring (2-2); the bearing outer ring (2-1) is assembled on the bearing seat (1), and the bearing inner ring (2-2) is assembled on the active spiral bevel gear (6); the oil seal (4) is assembled between the sealing cover (3) and the input flange (5), the input flange (5) is inserted into the active spiral bevel gear (6), and cooperates with the oil seal (4) and the bearing inner ring (2-2); the sealing cover (3) is covered on the bearing seat (1); the characteristics are: A boss stop is provided at the lower end of the input flange (5), and the boss stop cooperates with the bearing inner ring (2-2) to form a matching surface.

2. The loader drive axle input flange structure as claimed in claim 1, characterized in that: The boss stop at the lower end of the input flange (5) has a height of 5 mm.

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