CN221160200U

CN221160200U - Rear cover dismounting device for axle box of motor train unit

Info

Publication number: CN221160200U
Application number: CN202322801784.5U
Authority: CN
Inventors: 李广明; 王增强; 李颖聪
Original assignee: CRRC Guangdong Co Ltd
Current assignee: CRRC Guangdong Co Ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-06-18
Anticipated expiration: 2033-10-18

Abstract

The utility model discloses a rear cover dismounting device of an axle box of a motor train unit, which comprises a T-shaped thrust seat, wherein a screw rod is connected in the T-shaped thrust seat in a penetrating way, and one end of the screw rod is connected with a T-shaped plug through a pressure bearing. When the T-shaped thrust bearing is used, the thrust seat wing plates of the T-shaped thrust seat are placed on the inner side of the front cover of the axle box, and the top wing plates of the T-shaped top are propped against the axle box, so that the T-shaped top keeps non-rotating transverse displacement in the screw pushing process by only rotating the screw and applying the pressure bearing, thereby realizing the separation of the rear cover of the axle box and the axle box. The device simple structure, convenient operation can realize dismantling fast of axle box back lid, and pulls out the process atress evenly, does not produce the injury to the axle box.

Description

Rear cover dismounting device for axle box of motor train unit

Technical Field

The utility model belongs to the technical field of rail transit vehicle manufacturing, and particularly relates to a rear cover dismounting device of an axle box of a motor train unit.

Background

The bogie is a core component of a rail transit train, and advanced maintenance is needed in a specific operation period, namely, the states of all components of the bogie are confirmed, and the functions are recovered and the reliability is improved. The rear cover of the partial type bogie axle box is matched with the axle box body through a bolting labyrinth groove, and the rear cover is disassembled by pulling the axle box body so as to achieve the purpose of ejecting the rear cover. Because of the related design requirements such as dust prevention, the axle box rear cover is tightly matched with the axle box body, the matching force is large, the rear cover cannot be separated by using manual force, and special process equipment is required to be disassembled. In addition, the front cover of the axle box is used as a fulcrum, and uneven stress easily causes damage to the screw thread pair for connecting the front cover and the axle box. At present, a common split type ball joint connection ejection tool sometimes damages and discards a front cover of an axle box, and in the ball joint dry friction process, abrasion and uneven force transmission are easy to occur.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a device capable of achieving high-quality and high-efficiency completion of the dismounting work of the rear cover of the axle box of the motor train unit.

The utility model relates to a rear cover dismounting device of an axle box of a motor train unit, which comprises a T-shaped thrust seat, wherein a screw rod is connected in the T-shaped thrust seat in a penetrating way, and one end of the screw rod is connected with a T-shaped plug through a pressure bearing.

According to some embodiments of the utility model, the other end of the screw is a hexagonal head structure.

According to some embodiments of the utility model, the T-shaped thrust block is threadably connected to the screw.

According to some embodiments of the utility model, the T-shaped thrust block comprises a cylinder with thrust block wings disposed thereon.

According to some embodiments of the utility model, the T-shaped plug comprises a cylinder, one end of the cylinder is provided with a plug wing plate, and one end of the cylinder is provided with a positioning groove for installing the pressure bearing.

According to some embodiments of the utility model, the inner ring of the pressure bearing is interference fit with the positioning groove.

According to some embodiments of the utility model, a clamping groove is formed in one end, connected with the T-shaped plug, of the screw rod, and the outer ring of the pressure bearing is in interference fit with the clamping groove.

According to some embodiments of the utility model, the thrust block wing plate is larger than the plug wing plate.

The utility model has at least the following beneficial effects: when the T-shaped thrust bearing is used, the thrust seat wing plates of the T-shaped thrust seat are placed on the inner side of the front cover of the axle box, and the top wing plates of the T-shaped top are propped against the axle box, so that the T-shaped top keeps non-rotating transverse displacement in the screw pushing process by only rotating the screw and applying the pressure bearing, thereby realizing the separation of the rear cover of the axle box and the axle box. The device simple structure, convenient operation can realize dismantling fast of axle box back lid, and pulls out the process atress evenly, does not produce the injury to the axle box.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

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

Fig. 2 is a schematic view of another direction of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, an axle box back cover dismounting device of an electric train comprises a T-shaped thrust seat 1, wherein the T-shaped thrust seat 1 comprises a cylinder 11, and a thrust seat wing plate 12 is arranged on the cylinder 11. The T-shaped thrust seat 1 is internally connected with a screw rod 2 in a penetrating way, and the T-shaped thrust seat 1 is connected with the screw rod 2 through threads. One end of the screw rod 2 is connected with a T-shaped plug 4 through a pressure bearing 3. The T-shaped plug 4 comprises a cylinder 42, one end of the cylinder 42 is provided with a plug wing plate 43, and one end of the cylinder 42 is provided with a positioning groove 41 for installing the pressure bearing 3.

For easy installation, the inner ring of the pressure bearing 3 is in interference fit with the positioning groove 41. One end of the screw rod 2 connected with the T-shaped plug 4 is provided with a clamping groove 21, and the outer ring of the pressure bearing 3 is in interference fit with the clamping groove 21.

For the rotation operation of the screw 4, the other end of the screw 4 has a hexagonal head structure. Of course, other configurations are possible as desired.

To ensure a more secure positioning, the thrust block wing plate 12 is larger than the plug wing plate 43 in size.

When the T-shaped thrust bearing is used, the thrust seat wing plate 12 of the T-shaped thrust seat 1 is placed on the inner side of the front cover of the axle box, the top wing plate 43 of the T-shaped top 4 is propped against the axle box, and only the screw rod 2 is rotated, and the transverse displacement of the T-shaped top 4 which is not rotated in the pushing process of the screw rod 2 is ensured by the application of the pressure bearing 3, so that the separation of the rear cover of the axle box and the axle box is realized. The device simple structure, convenient operation can realize dismantling fast of axle box back lid, and pulls out the process atress evenly, does not produce the injury to the axle box.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The utility model provides a EMUs axle box back lid shirks device which characterized in that: the novel screw rod type thrust bearing comprises a T-shaped thrust seat (1), wherein a screw rod (2) is connected in the T-shaped thrust seat (1) in a penetrating way, and one end of the screw rod (2) is connected with a T-shaped plug (4) through a pressure bearing (3).

2. The motor train unit axlebox back cover withdrawal device of claim 1, wherein: the other end of the screw rod (2) is of a hexagonal head structure.

3. The motor train unit axlebox back cover withdrawal device of claim 1, wherein: the T-shaped thrust seat (1) is connected with the screw rod (2) through threads.

4. The motor train unit axlebox back cover withdrawal device of claim 1, wherein: the T-shaped thrust block (1) comprises a cylinder (11), and thrust block wing plates (12) are arranged on the cylinder (11).

5. The motor train unit axlebox back cover withdrawal apparatus of claim 4, wherein: the T-shaped plug (4) comprises a cylinder (42), a plug wing plate (43) is arranged at one end of the cylinder (42), and a positioning groove (41) for installing the pressure bearing (3) is arranged at one end of the cylinder (42).

6. The motor train unit axlebox back cover withdrawal apparatus of claim 5, wherein: the inner ring of the pressure bearing (3) is in interference fit with the positioning groove (41).

7. The motor train unit axlebox back cover withdrawal apparatus of claim 5, wherein: one end of the screw rod (2) connected with the T-shaped plug (4) is provided with a clamping groove (21), and the outer ring of the pressure bearing (3) is in interference fit with the clamping groove (21).

8. The motor train unit axlebox back cover withdrawal apparatus of claim 5, wherein: the thrust block wing plate (12) is larger than the plug wing plate (43).