CN219361197U

CN219361197U - Thrust wheel for rubber crawler chassis

Info

Publication number: CN219361197U
Application number: CN202320330152.2U
Authority: CN
Inventors: 朱福平; 魏勋利; 颜颖; 郭金港
Original assignee: Science and Technology Branch of XCMG
Current assignee: Science and Technology Branch of XCMG
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-07-18
Anticipated expiration: 2033-02-28

Abstract

The utility model belongs to the technical field of thrust wheels, and in particular relates to a thrust wheel for a rubber crawler chassis, which comprises a thrust wheel body and a thrust wheel pin shaft, wherein the thrust wheel body comprises a middle wheel body, two sides of the middle wheel body are respectively welded with a side wheel body, shaft sleeves are respectively arranged in central holes of the side wheel bodies at two sides of the thrust wheel body, and the shaft sleeves are in interference fit with the side wheel body; the bearing wheel pin shafts are in running fit with the bearing wheel bodies through shaft sleeves on two sides of the bearing wheel bodies. According to the utility model, the middle wheel body is added, a three-flange structure is formed, the contact surface with the rubber track is increased, the good fit with the rubber track transmission iron teeth can be realized, and the rubber track iron teeth are better prevented from falling off in the operation process, so that the derailment phenomenon can not occur in the operation process of the rubber track, and the speed and the environmental adaptability of the vehicle are further improved.

Description

Thrust wheel for rubber crawler chassis

Technical Field

The utility model belongs to the technical field of thrust wheels, and particularly relates to a thrust wheel for a rubber crawler chassis.

Background

The loading machine is widely applied to earth construction of construction projects such as highways, railways, buildings, hydropower stations, ports, mines and the like, and has the characteristics of high operation speed, high efficiency, good maneuverability and the like. At present, most of the thrust wheels for loading machines refer to the design of the thrust wheels for excavating machines, and the connection mode is mainly that end cover bolts are connected with track chain plates. The crawler belt is mainly applicable to construction operation under some low-speed and light-load working conditions, is not applicable to loading machinery for high-speed operation under severe working conditions, and is poor in derailment prevention performance due to the fact that the supporting wheel is mainly of a double-flange structure (without a middle wheel body). The traditional double-flange thrust wheel has the advantages of larger span, less contact surface with the crawler belt, long-time operation under heavy-load working conditions, and risk of weld cracking, and influences the overall service life of the thrust wheel.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the supporting wheel for the rubber track chassis, which is provided with the middle wheel body, forms a three-flange structure, increases the contact surface with the rubber track, can realize better fit with the transmission iron teeth of the rubber track, and improves the derailment prevention performance of the rubber track in the operation engineering of the crawler-type loading machinery.

The utility model is realized by the following technical scheme: the thrust wheel for the rubber crawler chassis comprises a thrust wheel body and a thrust wheel pin shaft, wherein the thrust wheel body comprises a middle wheel body, two sides of the middle wheel body are respectively welded with a side wheel body, and shaft sleeves are respectively arranged in central holes of the side wheel bodies at two sides of the thrust wheel body and are in interference fit with the side wheel body; the bearing wheel pin shafts are in running fit with the bearing wheel bodies through shaft sleeves on two sides of the bearing wheel bodies.

In some embodiments, a lubricating oil cavity is formed among the middle wheel body, the side wheel bodies on two sides and the pin shafts of the supporting wheels, a lubricating oil duct which is communicated with the lubricating oil cavity is arranged on the side wheel body in a penetrating manner along the axial direction, and a floating oil seal is arranged on the outer side of the side wheel body.

In some embodiments, end covers are respectively arranged on two sides of the thrust wheel pin shaft, the floating oil seal is arranged between the end covers and the side wheel body, and a nipple which is plugged by a nipple screw is arranged on the end covers and is communicated with the lubricating oil duct.

In some embodiments, the floating oil seals on both sides of the thrust runner body are used in pairs; two floating oil seals used in pairs, one of which is embedded on the side wheel body and the other of which is supported on the end cover.

In some embodiments, the lubricating oil channels are axially penetrating oil holes symmetrically arranged on the side wheel body.

In some embodiments, screw holes are formed in the centers of the end faces of two sides of the thrust wheel pin shaft, and the thrust wheel pin shaft is connected with the crawler frame or the wheel frame through the screw holes.

The beneficial effects of the utility model are as follows: 1. the middle wheel body is added, a three-flange structure is formed, the contact surface with the rubber track is increased, the good fit with the rubber track transmission iron teeth can be realized, the rubber track iron teeth are better prevented from falling out in the operation process, the derailment phenomenon can not occur in the operation process of the rubber track, and the speed and the environmental adaptability of the vehicle are further improved;

2. the threaded hole design of the thrust wheel pin shaft can conveniently and rapidly realize connection of the thrust wheel and the crawler frame or the suspension system, and further realize use of various suspension systems of crawler machinery.

Drawings

FIG. 1 is an assembly view of the present utility model;

FIG. 2 is a schematic view of the structure of the thrust wheel body of the present utility model;

FIG. 3 is a schematic view of the structure of the side wheel body of the present utility model;

FIG. 4 is a schematic diagram of a floating oil seal used in pairs according to the present utility model;

FIG. 5 is a schematic view of the structure of the thrust wheel pin of the present utility model;

FIG. 6 is a schematic illustration of the utility model applied to a rubber track;

in the figure, 1, a thrust wheel body, 1-1, a middle wheel body, 1-2, a side wheel body, 2, a floating oil seal, 2-1, an O-shaped ring, 2-2, a floating oil seal seat, 3, an end cover, 4, an elastic retainer ring, 5, a thrust wheel pin shaft, 6, a shaft sleeve, 7, a nozzle tip screw, 8 and a rubber track.

Description of the embodiments

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

As shown in fig. 1 to 6, a thrust wheel for a rubber crawler chassis includes a thrust wheel body 1 and a thrust wheel pin 5. The supporting wheel body 1 comprises a middle wheel body 1-1, two sides of the middle wheel body 1-1 are respectively welded with a side wheel body 1-2, the three-flange structure of the supporting wheel is composed of the middle wheel body 1-1 and a group of symmetrical side wheel bodies 1-2 distributed on two sides of the middle wheel body 1-1, the middle wheel body 1-1 and the side wheel bodies 1-2 are formed through girth welding, and the implementation mode can be carbon dioxide gas shielded welding or rotary friction welding. The contact surface with the rubber crawler belt 8 is increased by the three-flange structure, so that the rubber crawler belt can be well matched with the rubber crawler belt transmission teeth, the rubber crawler belt transmission iron teeth can be well matched with the rubber crawler belt transmission iron teeth, the rubber crawler belt iron teeth are better prevented from falling off in the operation process, and the derailment phenomenon can not occur in the operation process of the rubber crawler belt.

As shown in fig. 1, 3 and 6, shaft sleeves 6 are respectively arranged in the central holes of the side wheel bodies 1-2 at two sides of the thrust wheel body 1, a spigot structure is arranged in the central holes of the side wheel bodies 1-2, and the shaft sleeves 6 are connected with the side wheel bodies 1-2 through interference fit at the spigot positions. The thrust wheel pin 5 penetrates through the thrust wheel body 1, the shaft sleeve 6 plays a role of a sliding bearing in the thrust wheel, and the thrust wheel pin 5 and the two shaft sleeves 6 realize that the thrust wheel body 1 can rotate around the thrust wheel pin 5 through clearance fit. Preferably, the shaft sleeve material is composed of Cu-based alloy and has certain self-lubricating capability.

As shown in fig. 1 and 6, a lubrication cavity a is formed among the middle wheel body 1-1, the side wheel bodies 1-2 on two sides and the supporting wheel pin shaft 5, and the lubrication cavity a is used for storing lubrication oil to lubricate the supporting wheel. The side wheel body 1-2 is provided with a lubricating oil duct B which is communicated with the lubricating oil cavity A in a penetrating way along the axial direction, and the lubricating oil duct B on the side wheel body 1-2 is used for communicating the outer side with the lubricating oil cavity A, so that lubricating oil can be conveniently filled during assembly. The outside of the side wheel body 1-2 is provided with a floating oil seal 2. The floating oil seal 2 may be provided in the form of: the two sides of the thrust wheel pin shaft 5 are respectively provided with an end cover 3, the end covers 3 are fixed relative to the thrust wheel pin shaft 5, the two sides of the thrust wheel pin shaft 5 are respectively provided with clamping grooves, elastic check rings 4 matched with the end covers 3 are arranged in the clamping grooves, and the two elastic check rings 4 realize the axial positioning of the thrust wheel pin shaft 5 and prevent the axial movement of the thrust wheel pin shaft 5. The floating oil seal 2 is arranged between the end cover 3 and the side wheel body 1-2, a nipple which is plugged by a nipple screw 7 is arranged on the end cover 3, the nipple is communicated with a lubricating oil duct, and lubricating oil can be filled into the lubricating oil cavity A through the nipple.

As shown in fig. 4, the floating oil seal 2 is composed of an O-ring 2-1 and a floating oil seal seat 2-2, and sealing between the outer side of the thrust wheel and the inner side of the thrust wheel is realized through the O-ring 2-1 of the floating oil seal 2, so that oil leakage of the thrust wheel in the operation process is prevented. As shown in fig. 1 and 6, the floating oil seals 2 on both sides of the thrust runner body 1 are used in pairs; two floating oil seals 2 used in pairs, one is embedded on the side wheel body 1-2, the other is supported on the end cover 3, the floating oil seal 2 embedded on the side wheel body 1-2 rotates together with the thrust wheel body 1, and the floating oil seal 2 positioned on the end cover 3 does not rotate. The two floating oil seals 2 used in pairs realize the sealing of the moving part and the sealing of the fixed part in the thrust wheel.

As shown in fig. 1, 3 and 6, the lubricating oil passage B is an axial through oil hole symmetrically arranged on the side wheel body 1-2, and the two axial through oil holes are arranged at 180 ° therebetween.

As shown in fig. 1, 5 and 6, screw holes are formed in the centers of the end faces of two sides of the thrust wheel pin shaft 5, and the thrust wheel pin shaft 5 is connected with a track frame or a wheel frame through the screw holes.

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. A thrust wheel for a rubber track chassis, characterized by: the bearing wheel comprises a bearing wheel body (1) and a bearing wheel pin shaft (5), wherein the bearing wheel body (1) comprises a middle wheel body (1-1), side wheel bodies (1-2) are welded on two sides of the middle wheel body (1-1) respectively, shaft sleeves (6) are respectively arranged in central holes of the side wheel bodies (1-2) on two sides of the bearing wheel body (1), and the shaft sleeves (6) are in interference fit with the side wheel bodies (1-2); the bearing wheel pin shafts (5) are in running fit with the bearing wheel body (1) through shaft sleeves (6) at two sides of the bearing wheel body (1).

2. A thrust wheel for a rubber track chassis according to claim 1, wherein: a lubricating oil cavity is formed among the middle wheel body (1-1), the side wheel bodies (1-2) on two sides and the thrust wheel pin shaft (5), a lubricating oil duct which is communicated with the lubricating oil cavity is arranged on the side wheel body (1-2) in a penetrating mode along the axial direction, and a floating oil seal (2) is arranged on the outer side of the side wheel body (1-2).

3. A thrust wheel for a rubber track chassis according to claim 2, wherein: the two sides of the thrust wheel pin shaft (5) are respectively provided with an end cover (3), the floating oil seal (2) is arranged between the end covers (3) and the side wheel body (1-2), and the end covers (3) are provided with a glib which is blocked by a glib screw (7) and is communicated with a lubricating oil duct.

4. A thrust wheel for a rubber track chassis according to claim 3, wherein: the floating oil seals (2) positioned at two sides of the thrust wheel body (1) are used in pairs; and two floating oil seals (2) used in pairs, one of which is embedded on the side wheel body (1-2) and the other of which is supported on the end cover (3).

5. A thrust wheel for a rubber track chassis according to claim 2, wherein: the lubricating oil duct is an axial penetrating oil hole symmetrically arranged on the side wheel body (1-2).

6. A thrust wheel for a rubber track chassis according to claim 1, wherein: screw holes are formed in the centers of the end faces of two sides of the supporting wheel pin shaft (5), and the supporting wheel pin shaft (5) is connected with the crawler frame or the wheel frame through the screw holes.