Main transmission oil seal limiting structure of loader drive axle

Abstract

The utility model discloses a main transmission oil seal limiting structure of a loader drive axle. An inner ring and an outer ring of an inner cone bearing and an outer cone bearing are assembled on a driving tooth and a speed reducer shell respectively, the bearing clearance between the inner cone bearing and the outer cone bearing is adjusted through a spacer bush, and the coaxiality of the driving tooth and the speed reducer shell is guaranteed; the check ring is assembled in an inner hole of the speed reducer shell, then the oil seal is installed, the oil seal is assembled between the speed reducer shell and the flange, and the oil seal is limited in the hole of the speed reducer shell through the check ring and the flange, so that the coaxiality of the oil seal and the speed reducer shell and the coaxiality of the oil seal and the driving teeth are ensured; the dustproof cover is assembled on the flange, and one end of the dustproof cover is embedded into a groove of the speed reducer shell; and the flange is assembled and locked on the driving teeth through a nut and a gasket. The framework oil seal is simple and compact in structure, easy to machine and convenient to assemble, and solves the problems that secondary assembly of the framework oil seal in the prior art affects coaxiality of the oil seal and a speed reducer shell, so that the speed reducer shell and a driving gear are eccentric, an oil seal lip is damaged, and finally oil leakage of the oil seal is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of a main transmission assembly of a loader drive axle, in particular to a main transmission oil seal limiting structure of a loader drive axle. Background Art

[0002] Wheel loaders in the domestic engineering machinery industry often work in harsh working environments. The drive axle that supports the entire machine and travels is located at the bottom of the loader. When working in coal mines, mud and sand and other working conditions, the main transmission oil seal of the drive axle is prone to oil leakage. The main transmission oil seal structure of the existing loader drive axle generally assembles the skeleton oil seal on the sealing cover, and locks the sealing cover on the reducer housing with bolts. After this secondary assembly, the coaxiality between the oil seal and the reducer housing is prone to poor, causing the inner lip of the oil seal to be eccentric with the active tooth. During operation, impurities such as coal powder and sand enter, causing wear on the oil seal lip and the outer circle of the active tooth, causing damage to the oil seal lip, and ultimately causing oil seal leakage, reducing the service life of the drive axle. Summary of the invention

[0003] The purpose of the utility model is to solve the above defects and provide a loader drive axle main transmission oil seal limiting structure which has a simple and compact structure, simple processing, convenient assembly and long service life, so as to solve the problem that the secondary assembly of the skeleton oil seal in the prior art affects the coaxiality of the oil seal and the reducer housing, causes eccentricity between the reducer housing and the active gear, causes damage to the oil seal lip and finally leads to oil leakage of the oil seal.

[0004] To achieve the above purpose, the utility model loader driving axle main transmission oil seal limiting structure comprises an inner cone bearing 1, a spacer sleeve 2, a reducer housing 3, an outer cone bearing 4, a retaining ring 5, an oil seal 6, a dust cover 7, a nut 8, a gasket 9, a flange 10 and a driving gear 11; the driving gear 11 is sequentially inserted into the inner cone bearing 1, the spacer sleeve 2, the outer cone bearing 4 and the flange 10 from the inside to the outside: the inner and outer rings of the inner cone bearing 1 and the outer cone bearing 4 are respectively assembled on the driving gear 11 and the reducer housing 3, and the inner cone bearing 1 and the outer cone bearing 4 are adjusted by the spacer sleeve 2. The retaining ring 5 is assembled in the inner hole of the reducer housing 3, and then the oil seal 6 is installed. The oil seal 6 is assembled between the reducer housing 3 and the flange 10, and is limited in the hole of the reducer housing 3 by the retaining ring 5 and the flange 10 to ensure the coaxiality of the oil seal 6 and the reducer housing 3 and the coaxiality of the oil seal 6 and the driving tooth 11; the dust cover 7 is assembled on the flange 10, and one end of the dust cover 7 is embedded in the groove of the reducer housing 3; the flange 10 is assembled and locked on the driving tooth 11 by the nut 8 and the washer 9.

[0005] The above-mentioned loader drive axle main transmission oil seal limiting structure has the following technical characteristics and beneficial effects by assembling the oil seal on the reducer housing and using a retaining ring to limit and maintain coaxiality:

[0006] 1. The oil seal and reducer housing, as well as the active gear, have high coaxiality after assembly, and will not tilt, which solves the problem in the prior art that the secondary assembly of the skeleton oil seal affects the coaxiality of the oil seal and the reducer housing, causing the reducer housing and the active gear to be eccentric, thus causing damage to the oil seal lip and eventually leading to oil leakage.

[0007] 2. The structure is simple and compact, easy to assemble, which increases the service life of the drive axle and is safe and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a main sectional structural schematic diagram of a main transmission oil seal limiting structure of a loader drive axle.

[0009] Figure numerals: inner tapered bearing 1, spacer sleeve 2, reducer housing 3, outer tapered bearing 4, retaining ring 5, oil seal 6, dust cover 7, nut 8, washer 9, flange 10, driving gear 11. DETAILED DESCRIPTION

[0010] The specific implementation of the main transmission oil seal limiting structure of the loader drive axle of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0011] Figure 1 As shown, the utility model loader driving axle main transmission oil seal limiting structure comprises an inner cone bearing 1, a spacer sleeve 2, a reducer housing 3, an outer cone bearing 4, a retaining ring 5, an oil seal 6, a dust cover 7, a nut 8, a gasket 9, a flange 10 and an active gear 11; the active gear 11 is sequentially installed with the inner cone bearing 1, the spacer sleeve 2, the outer cone bearing 4 and the flange 10 from the inside to the outside: the inner and outer rings of the inner cone bearing 1 and the outer cone bearing 4 are respectively assembled on the active gear 11 and the reducer housing 3, the spacer sleeve 2 is used to adjust the bearing clearance between the inner cone bearing 1 and the outer cone bearing 4, and ensure that the active gear 1 1 and the coaxiality of the reducer housing 3; the retaining ring 5 is assembled in the inner hole of the reducer housing 3, and then the oil seal 6 is installed. The oil seal 6 is assembled between the reducer housing 3 and the flange 10, and is limited in the hole of the reducer housing 3 by the retaining ring 5 and the flange 10 to ensure the coaxiality of the oil seal 6 and the reducer housing 3 and the coaxiality of the oil seal 6 and the active gear 11, that is, no eccentricity to achieve a good sealing effect; the dust cover 7 is assembled on the flange 10, and one end of it is embedded in the groove of the reducer housing 3; the flange 10 is assembled and locked on the active gear 11 by the nut 8 and the washer 9.

[0012] The utility model discloses a loader driving axle main transmission oil seal limiting structure with high coaxiality between the oil seal and the reducer housing, and between the oil seal and the driving gear, which can effectively prevent coal powder, sand and other impurities from entering during operation, and avoid damage to the oil seal lip. The utility model solves the problem of the prior art that the secondary assembly of the skeleton oil seal causes the oil seal and the reducer housing, and the driving gear to be eccentric, so that coal powder, sand and other impurities enter during operation, thereby wearing the oil seal lip and the outer circle of the driving gear and damaging the oil seal lip, which eventually causes oil leakage of the oil seal, thereby greatly improving product quality and reducing equipment operation and maintenance costs.

Claims

1. A main transmission oil seal limiting structure for a loader drive axle, characterized by: It comprises an inner cone bearing (1), a spacer sleeve (2), a reducer housing (3), an outer cone bearing (4), a retaining ring (5), an oil seal (6), a dust cover (7), a nut (8), a gasket (9), a flange (10) and a driving tooth (11); the driving tooth (11) is sequentially inserted into the inner cone bearing (1), the spacer sleeve (2), the outer cone bearing (4) and the flange (10) from the inside to the outside; the inner and outer rings of the inner cone bearing (1) and the outer cone bearing (4) are respectively assembled on the driving tooth (11) and the reducer housing (3); the spacer sleeve (2) is used to adjust the bearing clearance between the inner cone bearing (1) and the outer cone bearing (4), and ensure that the driving tooth (11) is in contact with the outer cone bearing (4); The invention relates to a method for producing a reducer housing (3) having a plurality of reducer housings (3) and a plurality of reducer housings (3). The retaining ring (5) is mounted on the inner hole of the reducer housing (3), and then an oil seal (6) is installed. The oil seal (6) is mounted between the reducer housing (3) and the flange (10), and is limited in the hole of the reducer housing (3) by the retaining ring (5) and the flange (10), so as to ensure the coaxiality of the oil seal (6) and the reducer housing (3) and the coaxiality of the oil seal (6) and the driving gear (11). The dust cover (7) is mounted on the flange (10), and one end of the dust cover (7) is embedded in the groove of the reducer housing (3). The flange (10) is assembled and locked on the driving gear (11) by a nut (8) and a washer (9).

Images