Loader drive axle hub reduction gear oil seal end cover structure

Abstract

The utility model discloses an oil seal end cover structure of a hub reduction gear of a loading machine drive axle. Inner rings of two cone bearings are installed on a supporting shaft, and outer rings of the two cone bearings are matched with a hub. The brake disc is assembled on the hub through a brake disc bolt, so that the hub and the brake disc can rotate around the supporting shaft; the oil seal is assembled in the oil seal end cover, and an inner lip of the oil seal tightly holds the supporting shaft to achieve a sealing effect; the O-shaped ring is assembled in an outer circular groove of the oil seal end cover so as to play a sealing role; one end of the dustproof cover is assembled on the supporting shaft, and the other end of the dustproof cover is embedded into a groove of the oil seal end cover to prevent impurities such as silt and gravels from entering the oil seal; and the oil seal end cover is arranged on the hub through a bolt. The hub oil seal is simple and compact in structure, convenient and efficient to assemble, good in sealing effect and long in service life, and solves the problems that in the prior art, a hub oil seal is in contact with pulverized coal and silt for a long time, a lip is continuously abraded, sealing of the oil seal fails, and oil leaks.

Description

Technical Field

[0001] The utility model relates to the technical field of a wheel-side reducer assembly of a loader drive axle, in particular to an oil seal end cover structure of a wheel-side reducer of a loader drive axle, and is particularly suitable for small-tonnage loaders. Background Art

[0002] Existing wheel loaders often work in harsh environments, especially when working in coal mines, mining, mud and sand, etc. The damage rate of the wheel hub oil seal of the loader drive axle is very high. At present, the wheel hub oil seal structure of the loader drive axle generally adopts the method of mounting the skeleton oil seal on the wheel hub, and the oil seal is exposed to the air for a long time, so the oil leakage failure is high and it is difficult to replace the oil seal. Since the oil seal is mounted in the inner hole of the wheel hub, it is difficult to design a suitable dustproof structure to prevent the entry of sand and gravel from the outside. After working for a long time, impurities such as sand and gravel enter the inner cavity, and some particles penetrate into the lip of the oil seal and continuously wear the lip, resulting in failure of the oil seal, and ultimately causing oil leakage failure of the drive axle, reducing the service life of the drive axle. Summary of the invention

[0003] The utility model aims to solve the above defects and provide a loader drive axle wheel reducer oil seal end cover structure which has a simple and compact structure, convenient and efficient assembly, good sealing effect and long oil seal service life, so as to solve the problem that the wheel hub oil seal in the prior art continuously wears the lip due to long-term contact with coal powder and mud, resulting in oil seal failure and oil leakage.

[0004] In order to achieve the above purpose, the utility model loader drive axle wheel reducer oil seal end cover structure comprises a wheel hub 1, an outer cone bearing 2, a support shaft 3, a brake disc bolt 4, a brake disc 5, an inner cone bearing 6, a bolt 7, a dust cover 8, an oil seal end cover 10, an O-ring 11 and an oil seal 12; the inner rings of the outer cone bearing 2 and the inner cone bearing 6 are installed on the support shaft 3, and the outer rings are matched with the wheel hub 1; the brake disc 5 is assembled on the wheel hub 1 with the brake disc bolt 4, so that the wheel hub 1 and the brake disc are fixed to the wheel hub 1. The moving plate 5 can rotate around the supporting shaft 3; the oil seal 12 is assembled in the oil seal end cover 10, and the inner lip of the oil seal hugs the supporting shaft 3 to achieve a sealing effect; the O-ring 11 is assembled in the outer circular groove of the oil seal end cover 10 to play a sealing role; one end of the dust cover 8 is assembled on the supporting shaft 3, and the other end is embedded in the groove of the oil seal end cover 10 to prevent mud, gravel and impurities from entering the oil seal 12; the oil seal end cover 10 is installed on the wheel hub 1 by bolts 7.

[0005] The utility model loader drive axle wheel side reducer oil seal end cover structure has the following technical characteristics and

[0006] Beneficial effects:

[0007] 1. By adding an oil seal end cover 10 and embedding the dust cover 8 inside the oil seal end cover 10, the dustproof effect can be greatly improved;

[0008] 2. The dust cover 8 is embedded in the oil seal end cover groove, and the oil seal end cover 10 and the wheel housing 1 are sealed with an O-ring to prevent the entry of impurities such as mud, gravel, etc., and achieve a better dustproof effect;

[0009] 3. The structure is simple and compact, and the assembly is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a main sectional structural schematic diagram of the oil seal end cover structure of the wheel side reducer of the loader driving axle.

[0011] Figure numerals: wheel hub 1, outer tapered bearing 2, support shaft 3, brake disc bolt 4, brake disc 5, inner tapered bearing 6, bolt 7, dust cover 8, oil seal end cover 10, O-ring 11, oil seal 12. DETAILED DESCRIPTION

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0013] Figure 1 As shown, the oil seal end cover structure of the wheel-side reducer of the loader driving axle of the utility model comprises a wheel hub 1, an outer cone bearing 2, a support shaft 3, a brake disc bolt 4, a brake disc 5, an inner cone bearing 6, a bolt 7, a dust cover 8, an oil seal end cover 10, an O-ring 11 and an oil seal 12; the inner rings of the outer cone bearing 2 and the inner cone bearing 6 are mounted on the support shaft 3, and the outer rings cooperate with the wheel hub 1; the brake disc 5 is assembled on the wheel hub 1 with the brake disc bolt 4, so that the wheel hub 1 and the brake disc 5 can rotate around the support shaft 3; the oil seal 12 is assembled in the oil seal end cover 10, and the inner lip of the oil seal hugs the support shaft 3 to achieve a sealing effect; the O-ring 11 is assembled in the outer circular groove of the oil seal end cover 10 to play a sealing role; one end of the dust cover 8 is assembled on the support shaft 3, and the other end is embedded in the groove of the oil seal end cover 10 to prevent mud, sand, gravel and impurities from entering the oil seal 12; the oil seal end cover 10 is mounted on the wheel hub 1 by bolts 7.

[0014] The oil seal end cover structure of the wheel reducer of the loader drive axle is equipped with an oil seal end cover 10, and adopts an O-ring 11 for sealing and an embedded dust cover 8 for dust prevention, thereby improving the coaxiality of the dust cover 8, the wheel hub 1 and the support shaft 3, avoiding the entry of impurities such as mud, gravel, etc., achieving a better dust prevention effect, greatly reducing the failure of the drive axle wheel hub oil seal to leak oil, and improving the service life and reliability of the drive axle.

Claims

1. A wheel-side reducer oil seal end cover structure for a loader drive axle, comprising a wheel hub (1), an outer cone bearing (2), a support shaft (3), a brake disc bolt (4), a brake disc (5), an inner cone bearing (6), a bolt (7), a dust cover (8) and an oil seal (12); the inner rings of the outer cone bearing (2) and the inner cone bearing (6) are mounted on the support shaft (3), and the outer rings are matched with the wheel hub (1); the brake disc (5) is assembled on the wheel hub (1) by the brake disc bolt (4), so that the wheel hub (1) and the brake disc (5) can rotate around the support shaft (3); the characteristics are: It also includes an oil seal end cover (10) and an O-ring (11); the oil seal (12) is assembled in the oil seal end cover (10), and the inner lip of the oil seal is tightly attached to the support shaft (3) to achieve a sealing effect; the O-ring (11) is assembled in the outer circular groove of the oil seal end cover (10) to play a sealing role; one end of the dust cover (8) is assembled on the support shaft (3), and the other end is embedded in the groove of the oil seal end cover (10) to prevent mud, sand, gravel and other impurities from entering the oil seal (12); the oil seal end cover (10) is mounted on the wheel hub (1) by bolts (7).

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