CN219406161U

CN219406161U - Novel wheel edge transmission mechanism of skid steer loader

Info

Publication number: CN219406161U
Application number: CN202320393158.4U
Authority: CN
Inventors: 王瑶瑶; 牛宝君; 韩标; 徐猛; 梁靖; 魏勋利
Original assignee: Science and Technology Branch of XCMG
Current assignee: Science and Technology Branch of XCMG
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-07-25
Anticipated expiration: 2033-03-06

Abstract

The utility model belongs to the field of transmission devices, and particularly relates to a novel wheel rim transmission mechanism of a skid steer loader, which comprises a wheel rim shaft and a chain wheel in transmission connection with the wheel rim shaft, wherein the wheel rim shaft is sleeved in a wheel rim support through a pair of bearings, one end of the wheel rim shaft far away from the chain wheel is connected with an oil seal cover, and the oil seal cover is connected with a web plate of a tire; the first seal sleeved on the wheel side shaft and the second seal sleeved in the wheel side support are arranged between the oil seal cover and the bearing closest to the oil seal cover. According to the utility model, the multistage seal protection is arranged, so that the wheel edge seal structure is greatly improved, and the reliability of the product is improved.

Description

Novel wheel edge transmission mechanism of skid steer loader

Technical Field

The utility model belongs to the field of transmission devices, and particularly relates to a novel wheel edge transmission mechanism of a skid steer loader.

Background

The skid steer loader is a wheel type special chassis device for realizing steering of a vehicle by utilizing the linear speed difference of wheels at two sides, a walking motor transmits torque to tires through double rows of chain wheels, chains and wheel edge structures, a plurality of transmission parts are arranged, the processing difficulty is high, and the reliability and maintainability of the wheel edge transmission structure have great influence on the whole performance.

In order to reduce abrasion among the chain wheels, the chains and the bearings, the chain wheel box is required to be lubricated by adding lubricating oil, and the chain wheel box is required to ensure good tightness and cleanliness, so that the manufacturing difficulty and cost of a transmission structure of the chain wheel box are increased. The traditional wheel edge transmission mechanism of the skid steer loader only adopts single-layer lip seal, the lip seal is inevitably worn and invalid after the whole skid steer loader runs for a long time, the problems of repair and maintenance are caused, and related cost is increased.

Disclosure of Invention

In order to overcome the defects in the prior art, the novel wheel edge transmission mechanism of the skid steer loader provided by the utility model has the advantages that the wheel edge sealing structure is greatly improved and the reliability of products is improved by arranging multi-stage sealing protection.

The utility model is realized by the following technical scheme: the novel wheel edge transmission mechanism of the skid steer loader comprises a wheel edge shaft and a chain wheel in transmission connection with the wheel edge shaft, wherein the wheel edge shaft is sleeved in a wheel edge support through a pair of bearings, one end of the wheel edge shaft far away from the chain wheel is connected with an oil seal cover, and the oil seal cover is connected with a web plate of a tire; the first seal sleeved on the wheel side shaft and the second seal sleeved in the wheel side support are arranged between the oil seal cover and the bearing closest to the oil seal cover.

In some embodiments, the first seal is an O-ring and the second seal is a lip seal.

In some embodiments, the first seal is axially retained by a bearing and oil seal cover in cooperation; the second seal is limited with the oil seal cover axially through the wheel edge support.

In some embodiments, a dust cover is disposed between the rim support and the web of the tire, the dust cover leaving a gap between the axial direction and the web of the tire.

In some embodiments, the dust cover is in a Z-shaped structure, and the dust cover is fixed on the wheel rim support through the throat hoop.

In some embodiments, the dust cap is made of rubber.

In some embodiments, the hub axle is of unitary construction with the sprocket.

In some embodiments, spline connection is adopted between the wheel side shaft and the oil seal cover.

In some embodiments, the oil seal cap is bolted to the web of the tire.

The beneficial effects of the utility model are as follows: according to the design of the wheel edge transmission, the traditional sprocket and the wheel edge shaft are combined into the wheel edge shaft sprocket which is a part, so that the matching error is reduced, and the economical efficiency of products is improved; the design of multilayer seal structure for in the whole wheel limit passageway, outside dustproof, waterproof entering wheel limit, to preventing in that wheel limit oil from spilling from the wheel limit, effectively solved wheel limit in-process mud and water mud pile wheel limit that traveles, destroyed sealed pipeline problem, very big improvement wheel limit seal structure, improved the reliability of product.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

in the figure, 1, a wheel side shaft, 2, a wheel side support, 3, a bearing, 4, an oil seal cover, 5, a first seal, 6, a second seal, 7, a dust cover, 8, a throat hoop, 9, a tire, 10 and a sprocket.

Description of the embodiments

The utility model is further described below with reference to the drawings and examples.

As shown in fig. 1, a novel wheel edge transmission mechanism of a skid steer loader comprises a wheel edge shaft 1 and a chain wheel 10 in transmission connection with the wheel edge shaft 1; as the preference of the embodiment, the two parts of the traditional sprocket 10 and the rim shaft 1 are combined into a part rim shaft sprocket, namely the rim shaft 1 and the sprocket 10 are of an integrated structure, and the design reduces the matching error of the rim shaft 1 and the sprocket 10 and improves the economical efficiency of products.

The wheel side shaft 1 is sleeved in the wheel side support 2 through a pair of bearings 3, the wheel side shaft 1 is matched with the inner ring of the bearings 3, the wheel side support 2 is matched with the outer ring of the bearings 3 (a sleeve matched with the outer ring of the bearings 3 shown in fig. 1 and a cone body clung to the outer circumferential surface of the sleeve are part of the wheel side support 2, and the sleeve and the cone body are welded into a whole). The wheel side shaft 1 is connected with an oil seal cover 4 at one end far away from the chain wheel 10, and the wheel side shaft 1 is connected with the oil seal cover 4 through a spline; the oil cover 4 is bolted to the web of the tyre 9. The wheel side support 2, the bearing 3 and the oil seal cover 4 are used for fixing the wheel side shaft 1, so that the wheel side shaft 1 is driven by the chain wheel 10 to do circular motion at a fixed position, and torque is transmitted to the tire 9, thereby realizing walking and steering of the whole machine.

A first seal 5 sleeved on the wheel side shaft 1 and a second seal 6 sleeved in the wheel side support 2 are arranged between the oil seal cover 4 and the bearing 3 closest to the oil seal cover 4. In some embodiments, the first seal 5 is an O-ring and the second seal 6 is a lip seal. The first seal 5 is axially limited by the matching of the bearing 3 and the oil seal cover 4; the second seal 6 is axially limited by the shaft shoulder of the wheel edge support 2 and the shaft shoulder of the oil seal cover 4. The O-shaped ring is synchronous with the movement of the wheel side shaft 1, and all contact surfaces of the O-shaped ring are in a relatively static state. The O-shaped ring prevents lubricating oil from leaking along the wheel rim shaft 1 to form primary oil way sealing. The lip edge sealing ring leaks lubricating oil in the inner limiting bearing 3, so that sediment, dust, vapor and the like are effectively prevented from invading the transmission structure to the outside, and secondary sealing is formed.

In some embodiments, a dust cover 7 is disposed between the rim support 2 and the web of the tire 9, and a gap is left between the dust cover 7 and the web of the tire 9 in the axial direction. The dust cover 7 is of a Z-shaped structure, and the dust cover 7 is made of rubber, so that the dust cover is convenient to fix and replace. The dust cover 7 is fixed on the wheel rim support 2 through a throat hoop 8. The front end face of the dust cover 7 and the radial plate of the tire 9 form a sealing cavity, so that muddy water and dust are effectively prevented from being accumulated at the oil seal cover 4 in the advancing process of the whole machine, the dust cover is immersed into the wheel rim support 2, the lip sealing effect is destroyed, the lip sealing ring is invalid, and the dust cover 7 forms three-level dust-proof and mud-proof sealing.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical principles of the present utility model are within the scope of the technical solutions of the present utility model.

Claims

1. The utility model provides a novel wheel limit drive mechanism of skid steer loader, includes wheel limit axle (1) and sprocket (10) of being connected with wheel limit axle (1) transmission, wheel limit axle (1) suit is in wheel limit support (2) through a pair of bearing (3), its characterized in that: the wheel side shaft (1) is connected with an oil seal cover (4) at one end far away from the chain wheel (10), and the oil seal cover (4) is connected with a web plate of the tyre (9); a first seal (5) sleeved on the wheel side shaft (1) and a second seal (6) sleeved in the wheel side support (2) are arranged between the oil seal cover (4) and the bearing (3) closest to the oil seal cover (4).

2. The novel wheel drive mechanism of a skid steer loader of claim 1, wherein: the first seal (5) adopts an O-shaped ring, and the second seal (6) adopts a lip seal ring.

3. The novel wheel drive mechanism of a skid steer loader of claim 2, wherein: the first seal (5) is axially limited by the matching of the bearing (3) and the oil seal cover (4); the second seal (6) is limited by the wheel edge support (2) and the oil seal cover (4) in the axial direction.

4. The novel wheel drive mechanism of a skid steer loader of claim 1, wherein: a dust cover (7) is arranged between the rim support (2) and the web of the tire (9), and a gap is reserved between the dust cover (7) and the web of the tire (9) in the axial direction.

5. The novel wheel drive mechanism of a skid steer loader of claim 4, wherein: the dust cover (7) is of a Z-shaped structure, and the dust cover (7) is fixed on the wheel side support (2) through the hose clamp (8).

6. A novel rim drive mechanism for a skid steer loader as defined in claim 4 or 5, wherein: the dust cover (7) is made of rubber.

7. The novel wheel drive mechanism of a skid steer loader of claim 1, wherein: the wheel side shaft (1) and the chain wheel (10) are of an integrated structure.

8. The novel wheel drive mechanism of a skid steer loader of claim 1, wherein: the rim shaft (1) is connected with the oil seal cover (4) through a spline.

9. The novel wheel drive mechanism of a skid steer loader of claim 1, wherein: the oil seal cover (4) is connected with the web plate of the tire (9) through bolts.