Wheel brake shoe

Abstract

The utility model relates to the technical field of brake shoes, in particular to a wheel brake shoe which comprises a brake shoe main body and a bearing block, a friction plate for braking a wheel is fixed on the outer side of the brake shoe main body through a screw, and one side of the brake shoe main body is in threaded connection with a driving screw rod for driving the bearing block to move. A supporting block for limiting the friction plate is fixed to one side of the bearing block through a screw, a heat conduction layer A for transferring heat of the friction plate is arranged in the brake shoe body, a heat conduction layer B for dissipating heat of the friction plate is bonded to the inner side of the heat conduction layer A, and heat dissipation holes for dissipating heat in the brake shoe body are formed in the surface of the brake shoe body. Through the arrangement of the driving screw rod, the supporting block, the bearing block, the heat conduction layer A, the heat conduction layer B and the heat dissipation holes, the problem that when an existing wheel brake shoe is used, limiting and heat dissipation treatment is inconvenient to conduct on a friction plate on the brake shoe body is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake shoes, in particular to a wheel brake shoe. Background Art

[0002] The brake shoe is the friction pair of the drum brake. Its main function is to cooperate with the brake drum to enable the vehicle to brake. The brake shoe is composed of brake drum, return spring, locating pin, friction plate and other components. The cross-sectional shape of the brake shoe is classified into two types: inner pull type and outer bind type. The actuator can be divided into wheel cylinder brake and cam brake. According to the force applied to the brake shoe, it can be divided into double leading type, double following type, self-force type and other types.

[0003] However, when the existing wheel brake shoe is used, the friction plate on the brake shoe body will generate a relatively high temperature when working. If the friction plate is at a high temperature for a long time, the friction coefficient of the friction plate will decrease, which will increase the wheel braking distance and may even cause a critical situation of brake failure. At the same time, when the friction plate on the brake shoe body is rubbed and braked, the friction plate will be subjected to external pressure, and the friction plate is prone to shaking and deflection, which has a certain impact on the braking effect of the wheel. Therefore, a wheel brake shoe is provided. Utility Model Content

[0004] The main purpose of the utility model is to provide a wheel brake shoe. The utility model solves the problem that it is inconvenient to limit and dissipate heat on the friction plate on the brake shoe body when the existing wheel brake shoe is in use by arranging a driving screw, a support block, a bearing block, a heat conductive layer A, a heat conductive layer B and a heat dissipation hole.

[0005] The technical solution adopted by the utility model to solve its technical problems is a wheel brake shoe, comprising a brake shoe body and a bearing block, a friction plate for braking the wheel is screwed fixed on the outer side of the brake shoe body, a driving screw for driving the bearing block to move is threadedly connected to one side of the brake shoe body, a support block for limiting the friction plate is screwed fixed on one side of the bearing block, a heat-conducting layer A for transferring heat from the friction plate is arranged inside the brake shoe body, a heat-conducting layer B for dissipating heat from the friction plate is bonded to the inner side of the heat-conducting layer A, a heat-dissipating hole for dissipating heat in the brake shoe body is opened on the surface of the brake shoe body, a fixing block for preventing foreign matter from entering the brake shoe body is placed inside the heat-dissipating hole, and a mesh body for preventing foreign matter from entering the heat-dissipating hole is screwed fixed on the inner side of the fixing block.

[0006] By adopting the above technical solution, when the friction plate is fixed outside the brake shoe body, the driving screw on one side of the brake shoe body is rotated, and then the driving screw drives the bearing block to move, and the bearing block drives the support block to move outside the brake shoe body, so that the support block moves to the outside of the friction plate, and at the same time, the driving screw, the support block and the bearing block are each provided with two groups, so that the two groups of support blocks are moved to both sides of the friction plate on the brake shoe body, thereby facilitating the limiting treatment of the friction plate on the brake shoe body to avoid the friction plate from being offset when working;

[0007] When the friction plate on the brake shoe body is working, a high amount of heat will be generated on the surface of the friction plate. Then, the heat-conducting layer A made of thermal grease inside the brake shoe body will transfer the heat on the friction plate. Then, the heat-conducting layer B made of thermally conductive silicone sheet outside the heat-conducting layer A will transfer the heat outward. Then, the heat will be discharged outward through the heat dissipation holes opened on the brake shoe body, thereby facilitating the heat dissipation of the friction plate on the brake shoe body.

[0008] Specifically, a support rod for driving the positioning rod to move is inserted on one side of the fixing block, a spring for resetting the positioning rod is welded inside the fixing block, and a positioning hole for fixing the positioning rod is opened inside the brake shoe body.

[0009] By adopting the above technical solution, when the mesh on the fixed block needs to be cleaned, the support rod on the fixed block is pulled, and then the support rod drives the positioning rod to move, and then the spring in the brake shoe body is compressed, and then the positioning rod is moved out of the positioning hole opened on the brake shoe body, and then the fixed block is moved out of the heat dissipation hole, so as to facilitate the cleaning of the mesh on the fixed block.

[0010] Specifically, a slide groove is provided on the surface of the brake shoe body, and a sliding block connected to the support block is welded on the outer side of the slide groove.

[0011] By adopting the above technical solution, when the support block moves, the sliding block outside the support block slides in the sliding groove provided on the surface of the brake shoe body, thereby improving the stability of the movement of the support block.

[0012] Specifically, the heat-conducting layer A is made of thermally conductive silicone grease, and the heat-conducting layer B is made of thermally conductive silicone sheet.

[0013] By adopting the above technical solution, the heat-conducting layer A made of heat-conducting silicone grease and the heat-conducting layer B made of heat-conducting silicone sheet in the brake shoe body transfer the heat on the friction plate outside the brake shoe body.

[0014] Specifically, the inner size of the positioning hole matches the outer size of the positioning rod.

[0015] By adopting the above technical solution, when the positioning rod enters the interior of the brake shoe body, the inner side of the positioning hole provided on the brake shoe body matches the outer side of the positioning rod, so that the positioning rod can enter the brake shoe body for fixing.

[0016] Beneficial effects of the utility model:

[0017] (1) In the wheel brake shoe described in the utility model, when the friction plate is fixed on the outside of the brake shoe body, the driving screw on one side of the brake shoe body is rotated, and then the driving screw drives the bearing block to move, and the bearing block drives the support block to move outside the brake shoe body, so that the support block moves to the outside of the friction plate, and at the same time, the driving screw, the support block and the bearing block are provided with two groups, so that the two groups of support blocks move to the two sides of the friction plate on the brake shoe body, so as to facilitate the limiting treatment of the friction plate on the brake shoe body, and avoid the displacement of the friction plate when working;

[0018] (2) In the wheel brake shoe described in the utility model, when the friction plate on the brake shoe body is working, a relatively high amount of heat is generated on the surface of the friction plate, and then the heat-conducting layer A made of thermally conductive silicone grease inside the brake shoe body transfers the heat from the friction plate, and then the heat-conducting layer B made of thermally conductive silicone sheet outside the heat-conducting layer A transfers the heat outward, and then the heat is discharged outward through the heat dissipation holes opened on the brake shoe body, thereby facilitating the heat dissipation treatment of the friction plate on the brake shoe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of a wheel brake shoe of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of a brake shoe body of a wheel brake shoe of the utility model;

[0022] In the figure: 1. friction plate; 2. support block; 3. slider; 4. slide groove; 5. bearing block; 6. drive screw; 7. heat dissipation hole; 8. brake shoe body; 9. support rod; 10. mesh body; 11. heat conducting layer A; 12. positioning hole; 13. heat conducting layer B; 14. positioning rod; 15. spring; 16. fixing block. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In order to limit and dissipate heat for the friction plate 1 on the brake shoe body 8, as an embodiment of the utility model, as Figure 1 , Figure 2As shown, a wheel brake shoe described in the utility model comprises a brake shoe body 8 and a bearing block 5, a friction plate 1 for braking the wheel is screwed fixed to the outer side of the brake shoe body 8, a driving screw 6 for driving the bearing block 5 to move is threadedly connected to one side of the brake shoe body 8, a support block 2 for limiting the friction plate 1 is screwed fixed to one side of the bearing block 5, a heat-conducting layer A11 for transferring heat of the friction plate 1 is arranged inside the brake shoe body 8, a heat-conducting layer B13 for dissipating heat from the friction plate 1 is bonded to the inner side of the heat-conducting layer A11, a heat dissipation hole 7 for dissipating heat in the brake shoe body 8 is opened on the surface of the brake shoe body 8, a fixing block 16 for preventing foreign matter from entering the brake shoe body 8 is placed inside the heat dissipation hole 7, and a mesh body 10 for preventing foreign matter from entering the heat dissipation hole 7 is screwed fixed to the inner side of the fixing block 16.

[0025] When in use, when the friction plate 1 is fixed outside the brake shoe body 8, the driving screw 6 on one side of the brake shoe body 8 is rotated, and then the driving screw 6 drives the bearing block 5 to move, and the bearing block 5 drives the support block 2 to move outside the brake shoe body 8, so that the support block 2 moves to the outside of the friction plate 1. At the same time, the driving screw 6, the support block 2 and the bearing block 5 are each provided with two groups, so that the two groups of support blocks 2 are moved to both sides of the friction plate 1 on the brake shoe body 8, so as to facilitate the limiting treatment of the friction plate 1 on the brake shoe body 8, and avoid the friction plate 1 from deflecting when working;

[0026] When the friction plate 1 on the brake shoe body 8 is working, a relatively high heat will be generated on the surface of the friction plate 1, and then the heat-conducting layer A11 made of thermal grease inside the brake shoe body 8 will transfer the heat on the friction plate 1, and then the heat-conducting layer B13 made of thermally conductive silicone sheet outside the heat-conducting layer A11 will transfer the heat outward, and then the heat will be discharged outward through the heat dissipation holes 7 opened on the brake shoe body 8, thereby facilitating the heat dissipation treatment of the friction plate 1 on the brake shoe body 8.

[0027] In order to clean the mesh body 10 on the fixed block 16, for example, Figure 1 , Figure 2 As shown, the utility model also includes that a support rod 9 for driving the positioning rod 14 to move is inserted on one side of the fixing block 16, a spring 15 for resetting the positioning rod 14 is welded inside the fixing block 16, and a positioning hole 12 for fixing the positioning rod 14 is opened inside the brake shoe body 8.

[0028] During use, when the mesh 10 on the fixed block 16 needs to be cleaned, the support rod 9 on the fixed block 16 is pulled, and then the support rod 9 drives the positioning rod 14 to move, and then the spring 15 in the brake shoe body 8 is compressed, and then the positioning rod 14 is moved out of the positioning hole 12 opened on the brake shoe body 8, and then the fixed block 16 is moved out of the heat dissipation hole 7, so as to facilitate the cleaning of the mesh 10 on the fixed block 16.

[0029] In order to improve the stability of the movement of the support block 2, for example, Figure 1 As shown, the utility model also includes that a slide groove 4 is opened on the surface of the brake shoe body 8, and a sliding block 3 connected to the support block 2 is welded on the outer side of the slide groove 4.

[0030] When in use, when the support block 2 moves, the slider 3 outside the support block 2 slides in the slide groove 4 provided on the surface of the brake shoe body 8, thereby improving the stability of the movement of the support block 2.

[0031] In order to transfer the heat on the outer friction plate 1 of the brake shoe body 8, for example, Figure 2 As shown, the utility model also includes that the heat-conducting layer A11 is made of thermally conductive silicone grease, and the heat-conducting layer B13 is made of thermally conductive silicone sheet.

[0032] When in use, the heat-conducting layer A11 made of heat-conducting silicone grease and the heat-conducting layer B13 made of heat-conducting silicone sheet in the brake shoe body 8 transfer the heat on the friction plate 1 outside the brake shoe body 8 .

[0033] In order to allow the positioning rod 14 to enter the brake shoe body 8 for fixing, for example, Figure 2 As shown, the utility model also includes that the inner size of the positioning hole 12 is consistent with the outer size of the positioning rod 14.

[0034] During use, when the positioning rod 14 enters the brake shoe body 8, the inner side of the positioning hole 12 on the brake shoe body 8 matches the outer side of the positioning rod 14, so that the positioning rod 14 can enter the brake shoe body 8 for fixing.

[0035] When the utility model is in use, when the friction plate 1 is fixed to the outside of the brake shoe body 8, the driving screw 6 on one side of the brake shoe body 8 is rotated, and then the driving screw 6 drives the bearing block 5 to move, and the bearing block 5 drives the support block 2 to move outside the brake shoe body 8, so that the support block 2 moves to the outside of the friction plate 1, and at the same time, the driving screw 6, the support block 2 and the bearing block 5 are all provided with two groups, so that the two groups of support blocks 2 move to both sides of the friction plate 1 on the brake shoe body 8, so as to facilitate the limit processing of the friction plate 1 on the brake shoe body 8, and avoid the friction plate 1 from deflecting when working;

[0036] When the friction plate 1 on the brake shoe body 8 is working, a relatively high heat will be generated on the surface of the friction plate 1, and then the heat-conducting layer A11 made of heat-conducting silicone grease inside the brake shoe body 8 will transfer the heat on the friction plate 1, and then the heat-conducting layer B13 made of heat-conducting silicone sheet outside the heat-conducting layer A11 will transfer the heat outward, and then the heat will be discharged outward through the heat dissipation holes 7 opened on the brake shoe body 8, so as to facilitate the heat dissipation treatment of the friction plate 1 on the brake shoe body 8;

[0037] When the mesh 10 on the fixed block 16 is to be cleaned, the support rod 9 on the fixed block 16 is pulled, and then the support rod 9 drives the positioning rod 14 to move, and then the spring 15 in the brake shoe body 8 is compressed, and then the positioning rod 14 is moved out of the positioning hole 12 opened on the brake shoe body 8, and then the fixed block 16 is moved out of the heat dissipation hole 7, so that the mesh 10 on the fixed block 16 is conveniently cleaned;

[0038] When the support block 2 moves, the slider 3 outside the support block 2 slides in the slide groove 4 provided on the surface of the brake shoe body 8, thereby improving the stability of the movement of the support block 2;

[0039] The heat-conducting layer A11 made of heat-conducting silicone grease and the heat-conducting layer B13 made of heat-conducting silicone sheet in the brake shoe body 8 transfer the heat on the friction plate 1 outside the brake shoe body 8;

[0040] When the positioning rod 14 enters the brake shoe body 8 , the inner side of the positioning hole 12 provided on the brake shoe body 8 matches the outer side of the positioning rod 14 , so that the positioning rod 14 can enter the brake shoe body 8 for fixing.

[0041] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A wheel brake shoe, characterized in that: The invention comprises a brake shoe body (8) and a bearing block (5), wherein a friction plate (1) for braking a wheel is screwedly fixed on the outer side of the brake shoe body (8), a driving screw (6) for driving the bearing block (5) to move is threadedly connected to one side of the brake shoe body (8), a support block (2) for limiting the friction plate (1) is screwedly fixed to one side of the bearing block (5), a heat-conducting layer A (11) for transferring heat from the friction plate (1) is arranged inside the brake shoe body (8), a heat-conducting layer B (13) for dissipating heat from the friction plate (1) is bonded to the inner side of the heat-conducting layer A (11), a heat-dissipating hole (7) for dissipating heat from the brake shoe body (8) is opened on the surface of the brake shoe body (8), a fixing block (16) for preventing foreign matter from entering the brake shoe body (8) is placed inside the heat-dissipating hole (7), and a mesh body (10) for preventing foreign matter from entering the heat-dissipating hole (7) is screwedly fixed to the inner side of the fixing block (16).

2. A wheel brake shoe according to claim 1, characterized in that: A support rod (9) for driving the positioning rod (14) to move is inserted into one side of the fixing block (16), a spring (15) for resetting the positioning rod (14) is welded inside the fixing block (16), and a positioning hole (12) for fixing the positioning rod (14) is provided inside the brake shoe body (8).

3. A wheel brake shoe according to claim 1, characterized in that: A slide groove (4) is provided on the surface of the brake shoe body (8), and a sliding block (3) connected to the support block (2) is welded on the outside of the slide groove (4).

4. A wheel brake shoe according to claim 1, characterized in that: The heat-conducting layer A (11) is made of heat-conducting silicone grease, and the heat-conducting layer B (13) is made of heat-conducting silicone sheet.

5. A wheel brake shoe according to claim 2, characterized in that: The inner size of the positioning hole (12) matches the outer size of the positioning rod (14).

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