Gas cap liquid wet type brake device

Abstract

The utility model discloses a gas cap liquid wet type brake device, which belongs to the technical field of wet type brake, and comprises a brake shell, an air inlet and an air outlet, the air inlet and the air outlet are communicated and connected with the brake shell, the inner side of the brake shell is fixedly connected with an annular retainer ring, and the inner side of the annular retainer ring is fixedly connected with an air outlet. Guide columns are symmetrically and fixedly connected between the annular check ring and the inner wall of the brake shell, a movable plate is slidably connected to the guide columns, a first sealing rubber ring abutting against the inner side wall of the brake shell is inlaid in the outer wall of the movable plate, and the end, close to the annular check ring, of each guide column is sleeved with a spring; the surface, close to the annular check ring, of the movable plate is detachably connected with a brake pad, braking can be conducted through the single brake pad, the structure is simple, replacement is convenient, and the maintenance cost of the braking device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wet braking, and more specifically, to a pneumatic-hydraulic wet braking device. Background Technique

[0002] In the existing patent, a pneumatic-hydraulic wet braking device, in the patent authorization number CN212455273U, the braking is released by hydraulic pressure; the hydraulic operation control system consists of a throttle valve, a parking brake valve, a service emergency brake valve, an accumulator, a pressure gauge, a filling valve, a filter, an oil pump, a suction oil filter, an air filter, a radiator, and a hydraulic oil tank. The throttle valve is arranged between the front and rear wheel braking devices, adopting a fully enclosed structure and the technology of oil-cooled friction plates. The braking force adjustment is convenient, the braking distance is easy to control and adjust, the braking reliability is high, the driving safety is ensured, the vehicle inertia can be effectively reduced, the effect of point braking is increased, the inertial forward rush is avoided, and the comfort of the driver and passengers is improved. It can be widely applied to construction machinery and transport vehicles, especially the spring braking, hydraulic release, and wet hydraulic braking systems of underground mining transport vehicles.

[0003] However, the brake pads in the patent authorization announcement number CN212455273U need multiple pieces for braking. Therefore, when replacing the brake pads, multiple brake pads need to be replaced simultaneously, which not only affects the maintenance efficiency of the braking device but also greatly increases the maintenance cost of the braking device. Therefore, we propose a pneumatic-hydraulic wet braking device to solve the above problems. Content of the Utility Model

[0004] 1. Technical Problem to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a pneumatic-hydraulic wet braking device, which can brake through a single brake pad, has a simple structure, is convenient to replace, and reduces the maintenance cost of the braking device.

[0006] 2. Technical Solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A pneumatic-hydraulic wet braking device includes a braking housing, an air inlet and an air outlet that are conductively connected to the braking housing. An annular retaining ring is fixedly connected to the inner side of the braking housing, and guide posts are symmetrically and fixedly connected between the annular retaining ring and the inner wall of the braking housing;

[0009] A movable plate is slidably connected to the guide posts, and a first sealing rubber ring that abuts against the inner side wall of the braking housing is embedded in the outer wall of the movable plate;

[0010] A spring is sleeved on one end of the guide post close to the annular retaining ring;

[0011] A brake pad is detachably connected to the surface of the movable plate close to the annular retaining ring;

[0012] A cover is detachably connected to the port part of the brake housing. An installation sleeve is integrally formed in the middle of the cover, and an oil seal is sequentially installed inside the installation sleeve;

[0013] A rotating shaft is also installed through the inside of the installation sleeve. One end of the rotating shaft is connected to a brake plate, and a connecting seat is fixedly installed at the other end of the rotating shaft.

[0014] Further, one end of the spring is connected to the annular retaining ring, and the other end of the spring is connected to the movable plate.

[0015] Further, counterbore holes are formed in the edge part of the surface of the brake pad;

[0016] Screw holes are formed in the movable plate corresponding to the counterbore holes.

[0017] Further, a flange is integrally formed at the edge part of the cover corresponding to the port of the brake housing, and a second sealing rubber ring that abuts against the inner wall of the port of the brake housing is inlaid on the outer wall of the flange.

[0018] Further, a bearing that is in interference fit with the rotating shaft is installed on one side of the oil seal.

[0019] Further, key grooves are formed on the surface of the connecting seat.

[0020] Further, a wet cooling cavity is arranged between the annular retaining ring and the cover;

[0021] A two-way oil port that is communicated and connected with the wet cooling cavity is formed in the side wall of the brake housing.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the advantages of the present utility model are as follows:

[0024] (1) In this solution, after high-pressure gas enters the cavity on one side of the movable plate through the air inlet, the movable plate cooperates with the guide post to slide until the brake pad abuts against the brake plate, and the spring is compressed and deformed in cooperation with the annular retaining ring, so as to perform braking. After braking is completed, through the spring reset, the gas in the cavity on one side of the movable plate is discharged through the air outlet by using the movable plate in cooperation with the first sealing rubber ring, and the wheel shaft starts to rotate normally. Braking can be performed by a single brake pad, and the structure is simple, the replacement is convenient, and the maintenance cost of the braking device is reduced.

[0025] (2) In this solution, a convex key that fits into the keyway is provided at the end of the axle connected to the rotating shaft. Therefore, during the process of bolt connection, the torque of the bolt is reduced, ensuring the stability of the connection between the rotating shaft and the axle. Brief Description of the Drawings

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0027] Figure 2 is a structural schematic diagram of the present utility model from another perspective;

[0028] Figure 3 is a front view schematic diagram of the brake housing of the present utility model;

[0029] Figure 4 is a sectional view schematic diagram of the A-A part of the brake housing of the present utility model;

[0030] Figure 5 is a disassembled schematic diagram of the present utility model.

[0031] Explanation of the reference numerals in the drawings:

[0032] 1. Brake housing; 2. Air inlet; 3. Air outlet; 4. Annular retaining ring; 5. Guide post; 6. Spring; 7. Movable plate; 8. Brake pad; 9. First sealing rubber ring; 10. Cover; 11. Wet cooling chamber; 12. Flange; 13. Second sealing rubber ring; 14. Mounting sleeve; 15. Oil seal; 16. Bearing; 17. Rotating shaft; 18. Brake plate; 19. Connecting seat; 20. Keyway; 21. Two-way oil port. Detailed Embodiment

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] Embodiment:

[0035] Please refer to Figures 1-5 , a pneumatic-hydraulic wet braking device, including a brake housing 1 and an air inlet 2 and an air outlet 3 that are conductively connected to the brake housing 1. An annular retaining ring 4 is fixedly connected to the inner side of the brake housing 1, and guide posts 5 are symmetrically and fixedly connected between the annular retaining ring 4 and the inner wall of the brake housing 1;

[0036] A movable plate 7 is slidably connected to the guide post 5, and a first sealing rubber ring 9 that abuts against the inner side wall of the brake housing 1 is inlaid on the outer wall of the movable plate 7;

[0037] One end of the guide post 5 close to the annular retaining ring 4 is sleeved with a spring 6;

[0038] The surface of the movable plate 7 close to the annular retaining ring 4 is detachably connected with a brake pad 8;

[0039] The port part of the brake housing 1 is detachably connected with a cover 10. An installation sleeve 14 is integrally formed in the middle of the cover 10. An oil seal 15 is successively installed on the inner side of the installation sleeve 14;

[0040] A rotating shaft 17 is also installed through the inner side of the installation sleeve 14. One end of the rotating shaft 17 is connected with a brake plate 18, and the other end of the rotating shaft 17 is fixedly installed with a connecting seat 19;

[0041] It should be noted that when the pneumatic-hydraulic wet braking device is in use, the air inlet 2 and the air outlet 3 are connected to the air circuit, and the connecting seat 19 is connected to the wheel axle. After the high-pressure gas enters the cavity on one side of the movable plate 7 through the air inlet 2, the movable plate 7 slides cooperatively with the guide post 5 until the brake pad 8 abuts against the brake plate 18, and the spring 6 is compressed and deformed cooperatively with the annular retaining ring 4, so as to perform braking. After the braking is completed, the spring 6 resets, and the gas in the cavity on one side of the movable plate 7 is discharged through the air outlet 3 by using the movable plate 7 and the first sealing rubber ring 9 in cooperation. The wheel axle starts to rotate normally, and braking can be performed through the single brake pad 8. Moreover, the structure is simple, the replacement is convenient, and the maintenance cost of the braking device is reduced.

[0042] As Figure 4 shown, one end of the spring 6 is connected with the annular retaining ring 4, and the other end of the spring 6 is connected with the movable plate 7;

[0043] It should be noted that the elastic acting force of the spring 6 enables the movable plate 7 to reset while moving.

[0044] As Figure 4 shown, a countersunk hole is formed in the edge part of the surface of the brake pad 8;

[0045] The movable plate 7 is provided with a screw hole corresponding to the countersunk hole;

[0046] It should be noted that when the brake pad 8 is installed on the movable plate 7 by using the countersunk hole and the screw hole in cooperation, bolts are used in cooperation with the sealing ring.

[0047] As Figure 1 、 Figure 4 shown, a flange 12 is integrally formed at the edge part of the cover 10 corresponding to the port of the brake housing 1, and a second sealing rubber ring 13 abutted against the inner wall of the port of the brake housing 1 is inlaid on the outer wall of the flange 12;

[0048] It should be noted that the gap between the flange 12 and the port part of the brake housing 1 is filled with the second sealing ring 13 to prevent the leakage of cooling oil.

[0049] As Figure 5 shown, a bearing 16 that is interference-fitted with the rotating shaft 17 is installed on one side of the oil seal 15;

[0050] It should be noted that the friction between the rotating shaft 17 and the mounting sleeve 14 is reduced, and the rotation accuracy of the rotating shaft 17 is ensured.

[0051] As Figure 1 shown, a keyway 20 is formed on the surface of the connecting seat 19;

[0052] It should be noted that a convex key that fits with the keyway 20 is provided at the end of the wheel shaft connecting the rotating shaft 17. Therefore, during the bolt connection process, the torque of the bolt is reduced, and the stability of the connection between the rotating shaft 17 and the wheel shaft is ensured.

[0053] As Figure 1 、 Figure 4 shown, a wet cooling chamber 11 is provided between the annular retaining ring 4 and the cover 10;

[0054] A two-way oil port 21 that is conductively connected to the wet cooling chamber 11 is formed on the side wall of the brake housing 1;

[0055] It should be noted that a two-way valve is installed at the two-way oil port 21. During the movement of the movable plate 7, the cooling oil in the wet cooling chamber 11 is pressed out through the two-way oil port 21. After the movable plate 7 is reset, the cooling oil is filled into the wet cooling chamber 11 through the two-way oil port 21, enabling the brake pads 8 and the brake plate 18 to complete braking in the wet cooling chamber 11. The cooling chamber 11 is filled with cooling oil.

[0056] During use: Connect the air inlet 2 and the air outlet 3 to form an air path, and connect the connecting seat 19 to the wheel shaft. When high-pressure gas enters the chamber on one side of the movable plate 7 through the air inlet 2, the movable plate 7 slides in cooperation with the guide post 5 until the brake pads 8 abut against the brake plate 18, and the spring 6 is compressed and deformed in cooperation with the annular retaining ring 4 to perform braking. After braking is completed, the spring 6 resets, and the gas in the chamber on one side of the movable plate 7 is discharged through the air outlet 3 by the cooperation of the movable plate 7 and the first sealing ring 9, and the wheel shaft starts to rotate normally.

[0057] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improvement concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An air-over-liquid wet brake device, comprising a brake housing (1) and an air inlet (2) and an air outlet (3) conductively connected to the brake housing (1), characterized in that: An annular retaining ring (4) is fixedly connected to the inner side of the brake housing (1), and a guide column (5) is symmetrically fixedly connected between the annular retaining ring (4) and the inner wall of the brake housing (1); A movable plate (7) is slidably connected to the guide column (5), and the outer wall of the movable plate (7) is inlaid with a first sealing rubber ring (9) that abuts against the inner wall of the brake housing (1); A spring (6) is sleeved on one end of the guide column (5) close to the annular retaining ring (4); A brake pad (8) is detachably connected to the surface of the movable plate (7) close to the annular retaining ring (4); The port portion of the brake housing (1) is detachably connected to a cover (10), a mounting sleeve (14) is integrally formed in the middle of the cover (10), and an oil seal (15) is sequentially mounted on the inner side of the mounting sleeve (14); A rotating shaft (17) is also installed through the inner side of the installation sleeve (14), one end of the rotating shaft (17) is connected to a brake plate (18), and the other end of the rotating shaft (17) is fixedly installed with a connecting seat (19).

2. The air-over-liquid wet brake device according to claim 1, characterized in that: One end of the spring (6) is connected to the annular retaining ring (4), and the other end of the spring (6) is connected to the movable plate (7).

3. The air-over-liquid wet brake device according to claim 1, characterized in that: The edge of the surface of the brake pad (8) is provided with a countersunk hole; The movable plate (7) is provided with a screw hole at a position corresponding to the countersunk hole.

4. The air-over-liquid wet brake device according to claim 1, characterized in that: The cover (10) is integrally formed with a flange (12) at the edge portion corresponding to the port of the brake housing (1), and the outer wall of the flange (12) is inlaid with a second sealing rubber ring (13) that abuts against the inner wall of the port of the brake housing (1).

5. The air-over-liquid wet brake device according to claim 1, characterized in that: A bearing (16) which is interference-connected with the rotating shaft (17) is installed on one side of the oil seal (15).

6. The air-over-liquid wet brake device according to claim 1, characterized in that: A key groove (20) is provided on the surface of the connecting seat (19).

7. The air-over-liquid wet brake device according to claim 1, characterized in that: A wet cooling chamber (11) is provided between the annular retaining ring (4) and the sealing cover (10); A bidirectional oil port (21) which is in communication with the wet cooling chamber (11) is provided on the side wall of the brake housing (1).

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