CN219096708U

CN219096708U - Brake device for rail line small flatcar

Info

Publication number: CN219096708U
Application number: CN202223500906.9U
Authority: CN
Inventors: 谢跃; 陈兵; 龚楠富; 王光耀; 宋健; 肖博元
Original assignee: China Railway No 5 Engineering Group Co Ltd; Sixth Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Current assignee: China Railway No 5 Engineering Group Co Ltd; Sixth Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-30
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a brake device for a rail line trolley, which comprises a trolley frame (3) and a trolley wheel pair (4), wherein lever force transmission structures (1) are respectively arranged on the front side and the rear side of the trolley frame (3), the pivot of each lever force transmission structure (1) is fixed on the trolley frame (3), a brake friction plate (2-2) is arranged at the lower end of each lever, the brake friction plate (2-2) moves towards the trolley wheel pair (4) when the upper end of each lever rotates outwards, and the brake friction plate (2-2) is far away from the trolley wheel pair (4) when the upper end of each lever rotates inwards. The detachable push rod is pulled reversely, so that the friction force between the brake friction plate and the wheel set is provided and increased, and the manual active intervention brake is realized; the detachable push rod is pushed forward to limit the contact between the brake friction plate and the wheel and provide thrust, so that the running of the trolley is realized, and the problem of braking of the traditional line trolley is effectively solved.

Description

Brake device for rail line small flatcar

Technical Field

The utility model relates to a braking device, in particular to a braking device using a trolley on a track line.

Background

The small flat car used on the construction operation surface of the urban rail transit track line mainly realizes speed reduction and braking through manual pulling or pushing in the running process, has low braking efficiency, high operation risk and large car sliding probability, has certain safety risk and is difficult to realize standardized operation.

Chinese patent No. cn201711347150.X discloses a normally closed brake rail trolley. The normally closed brake rail-mounted trolley is provided with four independent travelling wheel assemblies, the brakes of the travelling wheels are set into a normally closed mode, the travelling wheel assemblies on the same side are welded with the frame into a whole, the frames on two sides are integrated through detachable connecting rods, and synchronous action of a brake mechanism can be realized through pushing and releasing of the first armrests. The problem with this construction is that a large force is required to push the trolley, and the human force is required to overcome the return spring force of the brake system in addition to the pushing force, so that the physical energy consumption for the worker is large.

Disclosure of Invention

The utility model aims to solve the technical problems: aiming at the problems that the small trolley is difficult to brake or the trolley is laborious in the prior art, the small trolley which can keep the brake normally open in a driving state is provided, and the brake can be realized by pulling the small trolley when the brake is needed.

The technical scheme of the utility model is as follows:

a brake device for a rail line small flat car comprises a small flat car frame 3 and a small flat car wheel pair 4, wherein lever force transmission structures 1 are respectively arranged on the front side and the rear side of the small flat car frame 3, fulcrums of the lever force transmission structures 1 are fixed on the small flat car frame 3, brake friction plates 2-2 are arranged at the lower ends of levers, the brake friction plates 2-2 move towards the small flat car wheel pair 4 when the upper ends of the levers rotate outwards, and the brake friction plates 2-2 are far away from the small flat car wheel pair 4 when the upper ends of the levers rotate inwards.

The trolley frame 3 is provided with a limit bolt support 2-4 and a limit bolt 2-3, and the rotation angle of the lever force transmission structure 1 is limited through the limit bolt 2-3.

The lever force transmission structure 1 comprises a force transmission rod supporting seat 1-1, a force transmission rod 1-2 and a detachable push rod 1-3, wherein the force transmission rod supporting seat 1-1 is used as a fulcrum to be installed on the front side or the rear side of the trolley frame 3, the middle part of the force transmission rod 1-2 is hinged on the force transmission rod supporting seat 1-1, the detachable push rod 1-3 is of a U-shaped structure, and two ends of the U-shaped structure are respectively connected with the two force transmission rods 1-2.

The dowel bar 1-2 is of a folded structure, the lower end of the dowel bar is a horizontal section, and the end part of the horizontal section is provided with a brake friction plate 2-2 through a brake friction plate supporting seat 2-1.

A return spring 5 is arranged between the small flat frame 3 and the dowel bar 1-2.

The dowel bar 1-2 is of a hollow structure, and the detachable push rod 1-3 is inserted into the dowel bar 1-2 for connection.

The spring connecting piece A2-5 is fixed on the dowel bar 1-2; the spring connecting sheets B2-6 are fixed on the small flat frame 3; the spring connecting piece A2-5 is connected with the spring connecting piece B2-6 through a spring 5.

Four dowel bars 1-2 and four brake friction plates 2-2 are mounted together, and a detachable push rod 1-3 is arranged.

The dowel bar 1-2 at the front end of the front direction of the small flat car is jacked up by screwing the limit bolt 2-3.

The beneficial effects of the utility model are as follows:

the contact between the brake pad and the wheel set is limited or realized through the contact between the limit bolt and the dowel bar; the friction force of the contact of the brake friction plate and the wheel set is provided by the tension of the spring, so that automatic braking is realized; the detachable push rod is pulled reversely, so that the friction force between the brake friction plate and the wheel set is provided and increased, and the manual active intervention brake is realized; the detachable push rod is pushed forward to limit the contact between the brake friction plate and the wheel and provide thrust, so that the running of the trolley is realized, and the problem of braking of the traditional line trolley is effectively solved.

According to the structural characteristics of the brake device used for the rail line trolley, the limit bolt is loosened when parking is needed, and the spring provides tension to enable the brake friction plate to contact with the wheel set to realize automatic braking; under the condition that manpower intervenes and provides reverse pulling force of the car sliding direction, greater friction force is provided, and braking efficiency is improved. When the car is required to run, the limit bolt at the section of the forward direction is screwed, and the rear end provides forward thrust under the intervention of manpower to release the brake, so that the running of the car is realized.

Drawings

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

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic diagram of a force transfer structure of the present utility model;

FIG. 4 is a schematic illustration of a brake construction according to the present utility model;

FIG. 5 is a schematic view of a dolly of the present utility model;

FIG. 6 is a schematic view of a pair of small flat wheels of the present utility model.

Detailed Description

The present utility model will be further described with reference to the drawings and the specific embodiments thereof in order to make the objects, technical solutions and advantages of the present utility model more apparent.

Example 1: as shown in fig. 1-6, a braking device for a rail line trolley comprises a lever force transmission structure 1, a braking structure 2, a trolley frame 3 and a trolley wheel pair 4: the lever force transmission structure 1 comprises a force transmission rod supporting seat 1-1, a force transmission rod 1-2 and a detachable push rod 1-3; the brake structure 2 comprises a brake friction plate supporting seat 2-1, a brake friction plate 2-2, a limit bolt 2-3, a limit bolt support 2-4, a spring connecting sheet A2-5 and a spring connecting sheet B2-6; the trolley frame 3 is a channel steel trolley frame body; the small flat wheel pair 4 comprises small flat wheels 4-1, wheel shafts 4-2 and wheel shaft fixing brackets 4-3; the lever force transmission structure 1 is fixed on the small flat frame 3 through a force transmission rod supporting seat 1-1; the brake structure 2 is fixed on the small flat frame 3 through a limit bolt support 2-4; the brake structure 2 is connected with the lever force transmission structure 1 through a brake friction plate supporting seat 2-1.

The limit bolts 2-3 on the front side and the rear side are both in an open state when parking, and the front brake and the rear brake are both in a state of being contacted with the wheels under the action of the springs 5. When the travelling is needed, the front limit bolt 2-3 is screwed up to jack up the dowel bar 1-2, the rear detachable push rod 1-3 is manually pushed to enable the line trolley to travel forwards, and the front limit bolt 2-3 effectively controls the relative distance between the brake friction plate 2-2 and the wheel set 4, so that the line trolley is not consumed by energy of the brake device 2 in the travelling process. When the line trolley is required to be braked, the detachable push rod 1-3 is pulled in a slight reverse direction by people, so that the dowel bar 1-2 can rotate clockwise, the brake friction plate 2-2 is driven to contact the wheel set 4, braking is realized, if the running direction of the line trolley is changed, the detachable push rod 1-3 can be taken out and is arranged in the dowel bar 1-2 on the other side, the screwing state of the limit bolts 2-3 on the front side and the rear side is changed, and flexible conversion of the running direction of the line trolley is realized.

The above description is only an example of the embodiment of the present utility model, and the scope of the present utility model is not limited thereto. Variations and alternatives can be readily ascertained by one skilled in the art within the scope of the present disclosure, which is intended to be within the scope of the present disclosure. For this purpose, the scope of the utility model shall be subject to the scope of the claims.

Claims

1. The utility model provides a brake equipment that rail line dolly used, includes little flat carriage (3) and little flat wheel pair (4), its characterized in that: the lever force transmission structure (1) is respectively installed on the front side and the rear side of the small flat car frame (3), the fulcrum of the lever force transmission structure (1) is fixed on the small flat car frame (3), the brake friction plate (2-2) is installed at the lower end of the lever, the brake friction plate (2-2) moves towards the small flat car wheel pair (4) when the upper end of the lever rotates outwards, and the brake friction plate (2-2) is far away from the small flat car wheel pair (4) when the upper end of the lever rotates inwards.

2. A brake assembly for a trolley according to claim 1, wherein: the small flatcar frame (3) is provided with a limit bolt support (2-4) and a limit bolt (2-3), and the rotation angle of the lever force transmission structure (1) is limited through the limit bolt (2-3).

3. A brake assembly for a trolley according to claim 1, wherein: the lever force transmission structure (1) comprises a force transmission rod supporting seat (1-1), a force transmission rod (1-2) and a detachable push rod (1-3), wherein the force transmission rod supporting seat (1-1) is used as a fulcrum to be installed on the front side or the rear side of the small flatcar frame (3), the middle part of the force transmission rod (1-2) is hinged on the force transmission rod supporting seat (1-1), the detachable push rod (1-3) is of a U-shaped structure, and two ends of the U-shaped structure are respectively connected with the two force transmission rods (1-2).

4. A brake assembly for a trolley in accordance with claim 3, wherein: the dowel bar (1-2) is of a folded structure, the lower end of the dowel bar is a horizontal section, and the end part of the horizontal section is provided with a brake friction plate (2-2) through a brake friction plate supporting seat (2-1).

5. The brake apparatus for a trolley of a track line as claimed in claim 4, wherein: a reset spring (5) is arranged between the trolley frame (3) and the dowel bar (1-2).

6. The brake apparatus for a trolley of a track line as claimed in claim 5, wherein: the dowel bar (1-2) is of a hollow structure, and the detachable push rod (1-3) is inserted into the dowel bar (1-2) for connection.

7. The brake apparatus for a trolley of a track line as claimed in claim 5, wherein: the spring connecting sheet A (2-5) is fixed on the dowel bar (1-2); the spring connecting sheet B (2-6) is fixed on the trolley frame (3); the spring connecting piece A (2-5) is connected with the spring connecting piece B (2-6) through a spring (5).

8. A brake apparatus for use with a trolley according to any one of claims 3 to 7, wherein: four dowel bars (1-2) and four brake friction plates (2-2) are arranged in total, and a detachable push rod (1-3) is arranged.

9. A brake apparatus for use with a trolley according to any one of claims 3 to 7, wherein: the dowel bar (1-2) at the front end of the forward direction of the trolley is jacked up by screwing the limit bolt (2-3).