Differential structure of drive axle of loading machine

Abstract

The utility model discloses a loader drive axle differential structure which comprises a bracket, an adjusting nut, a bearing cover, a bearing, a spacer bush and a right shell. The right shell is mounted on the bracket; the bearing is installed on the right shell, an adjusting nut is arranged on the left side of the bearing and used for adjusting a bearing gap, and a bearing cover is arranged below the bearing and used for fixing the bearing. The spacer bush is tightly attached to the right side of the bearing and installed on the right shell, and a large chamfer of a spacer bush chamfer is inwards arranged at the right end of the spacer bush and used for avoiding the root R angle of the right shell. The utility model has the advantages of simple and compact structure, low maintenance cost and safety and reliability in use, and solves the problem that the right shell is easy to break due to stress concentration caused by maximum stress when the root matching position of the right shell bearing in the differential assembly of the drive axle of the loading machine in the prior art is loaded.

Description

Technical Field

[0001] The utility model relates to the technical field of drive axles for engineering machinery loaders, in particular to a differential structure of a drive axle for a loader. Background Art

[0002] In the prior art, a common type of loader drive axle is required to transmit a large torque on its internal gears when operating under heavy load or illegal conditions. The root mating position of the right housing bearing in the differential assembly is subjected to the greatest stress when under load. Because the bearing is a standard part with a small root R angle, the R angle of the right housing bearing of the differential assembly must be smaller than the R angle of the bearing to avoid assembly interference. This causes stress concentration on the right housing of the differential assembly when the drive axle is operating under excessive load, which can easily lead to the problem of right housing fracture. Summary of the Invention

[0003] The purpose of the utility model is to solve the above defects and provide a loader drive axle differential structure with simple and compact structure, low maintenance cost, safe and reliable use, so as to solve the problem that the right case bearing root matching position in the loader drive axle differential assembly in the prior art is easily broken due to stress concentration caused by the maximum stress when carrying heavy load.

[0004] To achieve the above objectives, the utility model provides a loader drive axle differential structure comprising a bracket 1, an adjusting nut 2, a bearing cover 3, a bearing 4, a spacer 5, and a right housing 6; the right housing 6 is mounted on the bracket 1; the bearing 4 is mounted on the right housing 6, an adjusting nut 2 is provided on the left side of the bearing 4 for adjusting the bearing clearance, and a bearing cover 3 is provided below the bearing 4 for fixing the bearing 4; the spacer 5 is mounted on the right housing 6 close to the right side of the bearing 4, and a large chamfer of a spacer chamfer 8 is provided inward at the right end of the spacer 5 to make way for the root R angle 7 of the right housing.

[0005] Due to the addition of the spacer 4 with the spacer chamfer 8, there is room for the root R angle 7 of the right shell, so that the root R angle 7 of the right shell can be made larger. After the root R angle 7 of the right shell becomes larger, when the drive axle is loaded, the stress at this location can be effectively reduced to not exceed the mechanical properties of the material.

[0006] The loader drive axle differential structure of the above structure has the following technical features and

[0007] Beneficial effects:

[0008] 1. A spacer is added between the differential bearing and the right housing. One end of the spacer has a large chamfer to accommodate the large R angle of the right housing. This allows the right housing bearing root of the differential assembly to adopt a large R arc transition, thereby reducing stress at this location and preventing fracture due to stress concentration at the right housing bearing root, ultimately improving the reliability of the drive axle.

[0009] 2. The structure is simple and compact, with low maintenance cost and reliable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic diagram of the main cross-sectional structure of a loader drive axle differential structure.

[0011] Figure 2 yes Figure 1 Schematic diagram of the main cross-sectional structure of the septum sleeve.

[0012] Reference numerals: bracket 1, adjusting nut 2, bearing cover 3, bearing 4, spacer 5, right housing 6, root R angle of right housing 7, spacer chamfer 8. DETAILED DESCRIPTION

[0013] The specific implementation of the loader drive axle differential structure of the present invention is further described in detail below with reference to the accompanying drawings.

[0014] Figure 1-Figure 2 As shown, the utility model is a loader drive axle differential structure comprising a bracket 1, an adjusting nut 2, a bearing cover 3, a bearing 4, a spacer 5, and a right shell 6; the right shell 6 is mounted on the bracket 1; the bearing 4 is mounted on the right shell 6, an adjusting nut 2 is provided on the left side of the bearing 4 for adjusting the bearing clearance, and a bearing cover 3 is provided below the bearing 4 for fixing the bearing 4; the spacer 5 is mounted on the right shell 6 close to the right side of the bearing 4, and a large chamfer of a spacer chamfer 8 is provided inwardly at the right end of the spacer 5 to make way for the root R angle 7 of the right shell.

[0015] The utility model discloses a differential structure of a loader drive axle, by adding a spacer sleeve at the matching position of the differential bearing and the right case, with one end of the spacer sleeve having a large chamfer, and the large chamfer is used to make way for a large R angle of the right case, thereby avoiding the problem that the R angle of the right case in the original structure cannot be designed to be a large angle. Through the transition of the spacer sleeve, the R angle of the right case can be designed to meet product requirements, ensuring that when the drive axle is overloaded, the stress at the root of the right case bearing will not exceed the mechanical properties of the case material, avoiding the fracture of the root of the right case bearing due to stress concentration, and ultimately improving the reliability of the drive axle.

Claims

1. A loader drive axle differential structure, comprising a bracket (1), an adjusting nut (2), a bearing cover (3), a bearing (4) and a right housing (6); the right housing (6) is mounted on the bracket (1); the bearing (4) is mounted on the right housing (6), an adjusting nut (2) is provided on the left side of the bearing (4) for adjusting the bearing clearance, and a bearing cover (3) is provided below the bearing (4) for fixing the bearing (4); the structure is characterized by: It also includes a spacer (5); the spacer (5) is installed on the right shell (6) close to the right side of the bearing (4), and the right end of the spacer (5) is provided with a large chamfer (8) inwardly for making way for the root R angle (7) of the right shell.

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