CN218844938U

CN218844938U - Walking speed reducer with double-oil-cylinder structure hydraulic brake device

Info

Publication number: CN218844938U
Application number: CN202320051764.8U
Authority: CN
Inventors: 范建良; 吴海荣; 张�杰
Original assignee: Ningbo Hanzhu Yiyang Hydraulic Motor Co ltd
Current assignee: Ningbo Hanzhu Yiyang Hydraulic Motor Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-04-11
Anticipated expiration: 2033-01-09

Abstract

The utility model belongs to the technical field of the walking speed reducer, concretely relates to take double oil cylinder structure hydraulic brake device's walking speed reducer, including the fixed main part of walking speed reducer and walking speed reducer gyration main part, be provided with the C1 mouth in the fixed main part of walking speed reducer, be provided with the C2 mouth in the fixed main part of walking speed reducer, be provided with the C1 chamber in the fixed main part of walking speed reducer, be provided with the C2 chamber in the fixed main part of walking speed reducer. The utility model discloses a hydraulic brake device that the hydraulic pressure walking speed reducer of design was taken adopts the double oil cylinder structure in traditional design relatively, when the parking, promotes the big piston of braking through brake spring, realizes stopping for a long time, and when the braking of driving, through the brake pressure in proportional control C2 chamber, the braking thrust on the little piston of free control braking realizes steady safe braking operating mode, protects vehicle driver's safety and realizes the life of vehicle itself.

Description

Walking speed reducer with hydraulic brake device with double-oil-cylinder structure

Technical Field

The utility model relates to a walking speed reducer technical field specifically is a take double oil cylinder structure hydraulic brake device's walking speed reducer.

Background

At present, when a vehicle with a walking speed reducer with a single-oil-cylinder structure hydraulic brake device is arranged in the traditional mode, when the vehicle is braked, pressure oil of a brake oil port suddenly loses pressure, a brake piston is rapidly pushed to a friction plate under the action of a brake spring, a static friction plate and a dynamic friction plate are rapidly folded, a brake shaft is suddenly locked, the walking speed reducer is in a brake state, the walking speed reducer can bear inertia impact during the braking, the impact is very harmful to all parts inside the walking speed reducer, and great damage can be brought to machine equipment using the part of the walking speed reducer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take two hydro-cylinder structure hydraulic brake device's walking speed reducer has solved the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a take walking speed reducer of hydraulic brake device of double oil cylinder structure, includes walking speed reducer fixed main part and walking speed reducer gyration main part, be provided with the C1 mouth in the fixed main part of walking speed reducer, be provided with the C2 mouth in the fixed main part of walking speed reducer, be provided with the C1 chamber in the fixed main part of walking speed reducer, be provided with hydraulic motor in the fixed main part of walking speed reducer, be provided with braking spring in the fixed main part of walking speed reducer, be provided with the big piston of braking in the fixed main part of walking speed reducer, be provided with the little piston of braking on the big piston of braking, be provided with supporting spring on the big piston of braking, be provided with the static friction disc in the fixed main part of walking speed reducer, be provided with the brake spindle in the walking speed reducer gyration main part, be provided with the dynamic friction disc on the brake spindle.

Preferably, the C1 cavity is annular, the C1 cavity is connected with the C1 port, and when pressure oil is introduced into the C1 cavity, the large braking piston is pushed to overcome the thrust of the braking spring.

Preferably, the C2 cavity is annular, the C2 cavity is connected with the C2 port, and when pressure oil is introduced into the C2 cavity, the braking small piston is pushed to overcome the thrust of the supporting spring.

Preferably, one end of the brake spring is in contact with the large brake piston, the other end of the brake spring is in contact with the fixed main body of the walking speed reducer, and the large brake piston can be driven to move through the design of the brake spring.

Preferably, one end of the supporting spring is in contact with the small braking piston, the other end of the supporting spring is in contact with the large braking piston, and the small braking piston can be driven to move through the design of the supporting spring.

Preferably, the static friction plate is in contact with the small braking piston, the static friction plate is in contact with the dynamic friction plate, and the walking speed reducer can be braked through the design of the static friction plate.

The utility model has the advantages as follows:

the utility model discloses a hydraulic brake device that the hydraulic pressure walking speed reducer of design was taken adopts the double oil cylinder structure in traditional design relatively, when the parking, promotes the big piston of braking through brake spring, realizes stopping for a long time, and when the braking of driving, through the brake pressure in proportional control C2 chamber, the braking thrust on the little piston of free control braking realizes steady safe braking operating mode, protects vehicle driver's safety and realizes the life of vehicle itself.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a hydraulic schematic diagram of fig. 1 according to the present invention.

In the figure: 1. a port C1; 2. a port C2; 3. a cavity C1; 4. a C2 cavity; 5. a hydraulic motor; 6. a brake spring; 7. braking the large piston; 8. braking the small piston; 9. a support spring; 10. a static friction plate; 11. a dynamic friction plate; 12. a brake shaft; 13. the walking speed reducer fixes the main part. 14. Rotary main body of walking speed reducer

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a walking reducer with a hydraulic brake device with a double-cylinder structure comprises a walking reducer fixing body 13 and a walking reducer rotating body 14, wherein a C1 port 1 is arranged on the walking reducer fixing body 13, a C2 port 2 is arranged on the walking reducer fixing body 13, a C1 cavity 3 is arranged on the walking reducer fixing body 13, the C1 cavity 3 is annular, the C1 cavity 3 is connected with the C1 port 1, when pressure oil is introduced into the C1 cavity 3, a large braking piston 7 is pushed to overcome the thrust of a braking spring 6, a C2 cavity 4 is arranged on the walking reducer fixing body 13, the C2 cavity 4 is annular, the C2 cavity 4 is connected with the C2 port 2, and when the pressure oil is introduced into the C2 cavity 4, a small braking piston 8 is pushed to overcome the thrust of a supporting spring 9.

Referring to fig. 1-2, a hydraulic motor 5 is disposed on a fixed body 13 of the walking reducer, a brake spring 6 is disposed on the fixed body 13 of the walking reducer, one end of the brake spring 6 contacts with a large brake piston 7, the other end of the brake spring 6 contacts with the fixed body 13 of the walking reducer, the large brake piston 7 can be driven to move by the design of the brake spring 6, the large brake piston 7 is disposed on the fixed body 13 of the walking reducer, and a small brake piston 8 is disposed on the large brake piston 7.

Referring to fig. 1-2, a large braking piston 7 is provided with a supporting spring 9, one end of the supporting spring 9 is in contact with a small braking piston 8, the other end of the supporting spring 9 is in contact with the large braking piston 7, the small braking piston 8 can be driven to move through the design of the supporting spring 9, a fixed main body 13 of a walking speed reducer is provided with a static friction plate 10, when the walking speed reducer is braked, the static friction plate 10 is in contact with the small braking piston 8, the static friction plate 10 is in contact with a dynamic friction plate 11, when the walking speed reducer is not braked, the static friction plate 10 is not in contact with the small braking piston 8, the static friction plate 10 is not in contact with the dynamic friction plate 11, a rotary main body 14 of the walking speed reducer is provided with a brake shaft 12, the brake shaft 12 is provided with a dynamic friction plate 11, and when the static friction plate 10 is separated from the dynamic friction plate 11, the rotary main body 14 can freely rotate relative to the fixed main body 13; when the static friction plate 10 is contacted with the dynamic friction plate 11 and is relatively static, the rotary main body 14 and the fixed main body 13 are relatively static, the walking speed reducer is in a brake completion state, and the walking speed reducer can be braked through the design of the static friction plate 10.

The utility model discloses the concrete implementation process as follows:

1. when a vehicle is parked, the hydraulic motor 5 does not work, no pressure oil enters the C1 port 1 and the C2 port 2, no pressure exists in the C1 cavity 3 and the C2 cavity 4, the large braking piston 7 pushes the small braking piston 8 to prop against a brake pad under the action of the braking spring 6, the braking shaft 12 is locked, the walking speed reducer does not work, and the vehicle is in a parking braking state;

2. when the vehicle is started, pressure oil is introduced into the port C1, pressure is built in the cavity C1 3, the large braking piston 7 is pushed to overcome the thrust of the braking spring 6 and move leftwards, the small braking piston 8 is driven by the supporting spring 9 to move simultaneously, so that the static friction plate 10 and the dynamic friction plate 11 are separated, the braking shaft 12 can rotate freely, and at the moment, the hydraulic motor 5 is started to drive the walking speed reducer to run, and the vehicle walks forwards;

3. when the vehicle is braked in the walking process, the C1 cavity 3 continues to keep pressure, the large braking piston 7 is in a pushing state, the C2 cavity 4 is filled with pressure to push the small braking piston 8 to overcome the thrust of the supporting spring 9, and when the small braking piston 8 is pushed to a brake pad, the generated braking friction force is controlled to be insufficient to enable the braking shaft 12 to be locked instantaneously, so that the walking speed of the vehicle is slowed down slowly, and the vehicle is stopped stably. The pressure PC2 of the C2 cavity 4 is controlled by the brake pedal, so that the brake distances of different degrees can be realized, and the brake effect is the same as that of a common automobile.

4. When the vehicle is braked for a short time and is going to walk again, the brake pedal is released, the C2 cavity 4 loses pressure, the support spring 9 pushes the small brake piston 8 open, the static friction plate 10 is separated from the dynamic friction plate 11, the accelerator pedal is stepped, the hydraulic motor 5 drives the walking speed reducer to rotate, and the vehicle starts to advance.

5. When the vehicle is parked for a long time, the pressure of the C1 cavity 3 is cut off, the large braking piston 7 pushes the small braking piston 8 to prop against the brake pad under the action of the braking spring 6, and the braking shaft 12 is locked.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take two hydro-cylinder structure hydraulic brake device's walking speed reducer, includes walking speed reducer fixed main part (13) and walking speed reducer gyration main part (14), its characterized in that: the hydraulic braking device is characterized in that a C1 port (1) is formed in the walking speed reducer fixing main body (13), a C2 port (2) is formed in the walking speed reducer fixing main body (13), a C1 cavity (3) is formed in the walking speed reducer fixing main body (13), a C2 cavity (4) is formed in the walking speed reducer fixing main body (13), a hydraulic motor (5) is arranged on the walking speed reducer fixing main body (13), a braking spring (6) is arranged on the walking speed reducer fixing main body (13), a braking large piston (7) is arranged on the walking speed reducer fixing main body (13), a braking small piston (8) is arranged on the braking large piston (7), a supporting spring (9) is arranged on the braking large piston (7), a static friction plate (10) is arranged on the walking speed reducer fixing main body (13), a braking shaft (12) is arranged on the walking speed reducer rotating main body (14), and a dynamic friction plate (11) is arranged on the braking shaft (12).

2. The walking speed reducer with the hydraulic brake device with the double-oil-cylinder structure as claimed in claim 1, characterized in that: the C1 cavity (3) is annular, and the C1 cavity (3) is connected with the C1 port (1).

3. The walking speed reducer with the hydraulic brake device with the double-cylinder structure as claimed in claim 1, wherein: the C2 cavity (4) is annular, and the C2 cavity (4) is connected with the C2 port (2).

4. The walking speed reducer with the hydraulic brake device with the double-oil-cylinder structure as claimed in claim 1, characterized in that: one end of the brake spring (6) is in contact with the brake large piston (7), and the other end of the brake spring (6) is in contact with the walking speed reducer fixing main body (13).

5. The walking speed reducer with the hydraulic brake device with the double-oil-cylinder structure as claimed in claim 1, characterized in that: one end of the supporting spring (9) is in contact with the small braking piston (8), and the other end of the supporting spring (9) is in contact with the large braking piston (7).

6. The walking speed reducer with the hydraulic brake device with the double-oil-cylinder structure as claimed in claim 1, characterized in that: the static friction plate (10) is in contact with the small braking piston (8), and the static friction plate (10) is in contact with the dynamic friction plate (11).