CN213472667U

CN213472667U - Mounting structure of front axle hub of heavy truck

Info

Publication number: CN213472667U
Application number: CN202022694859.0U
Authority: CN
Inventors: 孟定桃; 孟庆云; 陈作云; 戴志鑫; 纪文韬
Original assignee: SAIC Iveco Hongyan Commercial Vehicle Co Ltd
Current assignee: Saic Hongyan Axle Chongqing Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-06-18
Anticipated expiration: 2030-11-19

Abstract

The utility model provides a heavily block front axle wheel hub's mounting structure, its characterized in that: the steering wheel comprises a wheel hub, a steering knuckle, a bearing, a spacer ring, an oil seal and an ABS gear ring; the knuckle is sleeved in the hub, the spacer ring and the bearing are sleeved on the knuckle, the oil seal is sleeved on the spacer ring, the ABS gear ring is sleeved in a hole of the hub, and the inner diameter of the oil seal is larger than the outer diameter of the bearing. Adopt the utility model discloses a structure, heavy truck front axle wheel hub's oil blanket is changed labour saving and time saving, production efficiency improves.

Description

Mounting structure of front axle hub of heavy truck

Technical Field

The utility model relates to an automobile manufacturing technical field, especially a heavily block front axle wheel hub's mounting structure.

Background

The mounting structure schematic diagram of the front axle hub of the heavy truck in the prior art as shown in the attached drawing 1 comprises a hub (1 '), a steering knuckle (2 '), a bearing (3 '), an oil seal (4 ') and an ABS gear ring (5 '); the ABS gear ring (5 ') is an important part for transmitting wheel speed data to an ABS (anti-lock brake system) sensor, the ABS gear ring (5') is sleeved on the outer peripheral surface of the left end of the hub (1 '), the bearing (3') is sleeved between the shaft of the steering knuckle (2 ') and the inner hole of the hub (1'), the oil seal (4 ') is sleeved on the outer peripheral surface of the inner ring of the bearing (3'), the outer peripheral surface of the oil seal (4 ') is in interference fit with the inner hole of the hub (1'), and the inner diameter of the oil seal (4 ') is smaller than the outer diameter of the bearing (3'). The bearing (3') in the structure is higher in cost than a standard bearing because an oil seal needs to be arranged on the inner ring, and a non-standard bearing is usually used.

When above-mentioned structure assembles, at first need install the bearing in wheel hub's the downthehole, install the oil blanket on the inner circle of bearing again, then integral hoisting wheel hub and knuckle assembly, there is the problem of centering difficulty during the assembly, in addition when the oil blanket needs to be changed, because the oil blanket internal diameter is less than the bearing holder external diameter, just can dismantle the oil blanket after must dismantling bearing whole earlier, have above-mentioned centering difficulty again when installing new oil blanket moreover, the change process of whole oil blanket is wasted time and energy, production efficiency is very low. Particularly, after the 'blue sky white cloud' plan is implemented in the country at present, heavy trucks for urban construction need to frequently wade to clean tire sediment, water and the sediment easily enter the lip of the oil seal, the service life of the oil seal is greatly reduced, and the replacement frequency of the oil seal is greatly increased. The mounting structure of the front axle hub of the heavy truck with the convenience for replacing the oil seal is urgently needed, so that the problems that the oil seal is time-consuming and labor-consuming to replace, the replacement cost is high and the production efficiency is low are solved.

SUMMERY OF THE UTILITY MODEL

Problem to in the background art, the utility model provides a heavily block front axle wheel hub's mounting structure to oil blanket among the heavy truck front axle wheel hub among the solution prior art is changed and is wasted time and energy, problem that production efficiency is low.

The utility model aims at realizing through the technical scheme, it is including:

the utility model provides a heavily block front axle wheel hub's mounting structure which innovation point lies in: the steering wheel comprises a wheel hub, a steering knuckle, a bearing, a spacer ring, an oil seal and an ABS gear ring; a hub flange is arranged on the outer peripheral surface of the middle part of the steering knuckle, a first shaft section of the steering knuckle is arranged on the right side of the hub flange, the inner diameter of the bearing is matched with the outer diameter of the first shaft section, and the inner diameter of the spacer ring is also matched with the outer diameter of the first shaft section; the hub is provided with a through hole along the axial direction, the through hole comprises a gear ring hole, an oil seal hole, a first transition hole, a bearing hole and a second transition hole which are sequentially connected from left to right, the aperture from the gear ring hole, the oil seal hole and the first transition hole to the bearing hole is gradually reduced, a first step surface is formed between the gear ring hole and the oil seal hole, a second step surface is formed between the oil seal hole and the first transition hole, a third step surface is formed between the bearing hole and the second transition hole, the aperture of the gear ring hole is matched with the outer diameter of the ABS gear ring, the aperture of the oil seal hole is matched with the outer diameter of the oil seal, and the aperture of the bearing hole is matched with the outer diameter of the bearing; the knuckle spindle is sleeved in the through hole, the space ring and the bearing are sleeved on the first spindle section, the oil seal is sleeved in the oil seal hole, the ABS gear ring is sleeved in the gear ring hole, the left end face of the space ring is in contact with the right end face of the hub flange, the right end face of the space ring is in contact with the right end face of the bearing inner ring, the right end face of the bearing outer ring is in contact with the third step face, the right end face of the oil seal is in contact with the second step face, the right end face of the ABS space ring is in contact with the first step face, and the hole face of the oil seal is in contact with the outer peripheral face of the space ring; the aperture of the oil seal is larger than the outer diameter of the bearing.

Preferably, a gap is formed between the right end face of the ABS gear ring and the left end face of the oil seal.

Preferably, the bearing is a tapered roller bearing.

Due to the adoption of the technical scheme, the utility model discloses following advantage has: because the space ring is added, the oil seal is not installed on the inner ring of the bearing any more, meanwhile, the inner diameter of the space ring is larger than the outer diameter of the bearing, when the oil seal needs to be replaced, the bearing does not need to be integrally disassembled, only the wheel hub needs to be withdrawn from the steering knuckle, the oil seal can be disassembled from the space ring, the replaced new oil seal can be installed in a hole of the wheel hub firstly, then the wheel hub is integrally sleeved on the steering knuckle, the space ring and the inner ring of the bearing do not need to be disassembled in the whole process, the time and labor are saved in installation, and the efficiency is. Additionally the utility model discloses a bearing that uses in the structure can adopt standard bearing, has reduced manufacturing cost than the mounting structure who adopts non-standard bearing.

Drawings

The drawings of the present invention are described below.

FIG. 1 is a schematic view of a mounting structure of a conventional front axle hub of a heavy truck;

fig. 2 is a schematic structural diagram of the present invention.

In the figure: 1. a hub; 2. a knuckle; 3. a bearing; 4. a space ring; 5. oil sealing; 6. an ABS gear ring; 21. a hub flange; 22. a first shaft section; 1' a hub; 2' a knuckle; 3', a bearing; 4', oil sealing; 5' ABS ring gear.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The mounting structure of the front axle hub of the heavy truck as shown in the attached figure 2 comprises a hub 1, a steering knuckle 2, a bearing 3, a space ring 4, an oil seal 5 and an ABS gear ring 6; a hub flange 21 is arranged on the outer peripheral surface of the middle part of the steering knuckle 2, a first shaft section 22 of the steering knuckle 2 is arranged on the right side of the hub flange 21, the inner diameter of the bearing 3 is matched with the outer diameter of the first shaft section 22, and the inner diameter of the spacer ring 4 is also matched with the outer diameter of the first shaft section 22; the hub 1 is provided with a through hole along the axial direction, the through hole comprises a gear ring hole, an oil seal hole, a first transition hole, a bearing hole and a second transition hole which are sequentially connected from left to right, the aperture from the gear ring hole, the oil seal hole and the first transition hole to the bearing hole is gradually reduced, a first step surface is formed between the gear ring hole and the oil seal hole, a second step surface is formed between the oil seal hole and the first transition hole, a third step surface is formed between the bearing hole and the second transition hole, the aperture of the gear ring hole is matched with the outer diameter of the ABS gear ring 6, the aperture of the oil seal hole is matched with the outer diameter of the oil seal 5, and the aperture of the bearing hole is matched with the outer diameter of the bearing 3; the steering knuckle 2 is sleeved in the through hole, the spacer 4 and the bearing 3 are sleeved on the first shaft section 22, the oil seal 5 is sleeved in the oil seal hole, the ABS gear ring 6 is sleeved in the gear ring hole, the left end face of the spacer 4 is in contact with the right end face of the hub flange 21, the right end face of the spacer 4 is in contact with the right end face of the inner ring of the bearing 3, the right end face of the outer ring of the bearing 3 is in contact with the third step face, the right end face of the oil seal 5 is in contact with the second step face, the right end face of the ABS gear ring 6 is in contact with the first step face, and the hole face of the oil seal 5 is in contact with the outer peripheral face of the spacer 4; the bore diameter of the oil seal 5 is larger than the outer diameter of the bearing 3.

In order to prevent the oil seal 5 from being damaged by pressure during the press mounting of the ABS gear ring 6, a gap is arranged between the right end face of the ABS gear ring 6 and the left end face of the oil seal 5, and the gap can be set to be 0.5 mm.

For the dismouting of being more convenient for, bearing 3 is tapered roller bearing, and tapered roller bearing's inner circle and roller can be installed in advance on first shaft section, and the outer lane can be installed at wheel hub's downthehole earlier, need not during the installation knuckle and wheel hub accurate centering can easy to assemble, when changing the oil blanket, also need not to dismantle tapered roller bearing's interior outer lane can realize the change of oil blanket.

Claims

1. The utility model provides a heavily block front axle wheel hub's mounting structure which characterized in that: the steering wheel comprises a wheel hub (1), a steering knuckle (2), a bearing (3), a space ring (4), an oil seal (5) and an ABS gear ring (6); a hub flange plate (21) is arranged on the outer peripheral surface of the middle part of the steering knuckle (2), a first shaft section (22) of the steering knuckle (2) is arranged on the right side of the hub flange plate (21), the inner diameter of the bearing (3) is matched with the outer diameter of the first shaft section (22), and the inner diameter of the spacer ring (4) is also matched with the outer diameter of the first shaft section (22); the hub (1) is provided with a through hole along the axial direction, the through hole comprises a gear ring hole, an oil seal hole, a first transition hole, a bearing hole and a second transition hole which are sequentially connected from left to right, the aperture from the gear ring hole, the oil seal hole, the first transition hole to the bearing hole is gradually reduced, a first step surface is formed between the gear ring hole and the oil seal hole, a second step surface is formed between the oil seal hole and the first transition hole, a third step surface is formed between the bearing hole and the second transition hole, the aperture of the gear ring hole is matched with the outer diameter of the ABS gear ring (6), the aperture of the oil seal hole is matched with the outer diameter of the oil seal (5), and the aperture of the bearing hole is matched with the outer diameter of the bearing (3); the steering knuckle (2) is sleeved in the through hole, the space ring (4) and the bearing (3) are sleeved on the first shaft section (22), the oil seal (5) is sleeved in the oil seal hole, the ABS gear ring (6) is sleeved in the gear ring hole, the left end face of the space ring (4) is in contact with the right end face of the hub flange plate (21), the right end face of the space ring (4) is in contact with the right end face of the inner ring of the bearing (3), the right end face of the outer ring of the bearing (3) is in contact with the third step face, the right end face of the oil seal (5) is in contact with the second step face, the right end face of the ABS gear ring (6) is in contact with the first step face, and the hole face of the oil seal (5) is in contact with the outer peripheral face of the space ring (4); the aperture of the oil seal (5) is larger than the outer diameter of the bearing (3).

2. The mounting structure for a front axle hub of a heavy truck as set forth in claim 1, wherein: and a gap is formed between the right end face of the ABS gear ring (6) and the left end face of the oil seal (5).

3. The mounting structure for a front axle hub of a heavy truck as set forth in claim 1 or 2, wherein: the bearing (3) is a tapered roller bearing.

4. The mounting structure for a front axle hub of a heavy truck as set forth in claim 2, wherein: the gap is 0.5 mm.