Parking brake caliper assembly of fire fighting truck

Abstract

The utility model discloses a parking brake caliper assembly of a fire fighting truck, and relates to the technical field. The brake caliper assembly comprises a brake caliper assembly shell, a brake pad assembly, a brake pad auxiliary plate, a hydraulic driving bin and a driving inner rod, and further comprises a brake pad assembly composed of a friction block body, a pasting heat insulation interlayer, a steel back plate and a brake gasket, friction block side grooves are formed in the two ends of the friction block body, and communicating top grooves are formed in the upper ends of the friction block side grooves; a positioning insertion barrel extending into the friction block side groove is fixedly arranged on the end face, close to the friction block body, of the pasting heat insulation interlayer, and a locking screw is in threaded connection with the interior of the positioning insertion barrel. According to the friction block, the heat dissipation grooves of the longitudinal structure are formed in the end face, close to the friction block body, of the pasting heat insulation interlayer, the multiple sets of heat dissipation grooves are transversely distributed at intervals, and when the friction block body and the pasting heat insulation interlayer are pasted together, heat can be rapidly dissipated.

Description

Technical Field

[0001] This utility model belongs to the field of brake caliper technology, and in particular relates to a parking brake caliper assembly for fire trucks. Background Technology

[0002] Brake calipers, also known as brakes, are the primary type used in most vehicles: caliper disc brakes. The rotating element is a metal disc that works on its end face, called the brake disc. The fixed element consists of friction pads with a small working area and a metal backing plate. Each brake has 2 to 4 of these pads, which, along with their actuating mechanisms, are mounted in caliper-shaped brackets spanning both sides of the brake disc; collectively, they are called brake calipers. The brake disc and brake calipers together constitute a caliper disc brake.

[0003] Common brake pads consist of a steel backing plate, an adhesive heat insulation layer, and a friction block. The friction block and the adhesive heat insulation layer are bonded together, and the surface of the adhesive heat insulation layer is completely in contact with the friction block. Due to the large contact area, the heat dissipation at the connection between the heat insulation layer and the friction block is slow, which affects the heat dissipation of the friction block. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a fire truck parking brake caliper assembly, which can effectively solve the problems of the existing technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a parking brake caliper assembly for fire trucks, comprising a caliper assembly housing, a brake pad assembly, a brake pad sub-plate, a hydraulic drive chamber, and a drive inner rod. It also includes: the brake pad assembly consists of a friction block body, an adhesive heat insulation layer, a steel backing plate, and brake pads; friction block side grooves are formed at both ends of the friction block body, and a connecting top groove is formed at the upper end of the friction block side groove; a positioning insert extending into the friction block side groove is fixed to the end face of the adhesive heat insulation layer near the friction block body, and a locking screw is threaded into the positioning insert.

[0007] Furthermore, multiple sets of longitudinal heat dissipation grooves with a spacing are made on the surface of the heat insulation interlayer close to the friction block body.

[0008] Furthermore, the nut end of the locking screw is pressed tightly against the bottom wall of the groove that connects to the top groove.

[0009] Furthermore, the length of the positioning insert is less than the groove depth of the friction block side groove.

[0010] Furthermore, a steel groove is provided at the end of the steel back plate near the end where the heat insulation interlayer is attached, and an interlayer protrusion that can extend into the steel groove is fixed at the end of the heat insulation interlayer that is close to the steel back plate.

[0011] Furthermore, a steel protrusion is fixed on the end face of the steel backplate near the brake pad, and a pad insertion hole adapted to the steel protrusion is opened on the end face of the brake pad near the steel backplate.

[0012] This utility model has the following beneficial effects:

[0013] This invention features a longitudinally structured heat dissipation groove on the end face of the adhesive heat insulation layer close to the friction block body, with multiple sets of grooves spaced laterally. This allows for rapid heat dissipation when the friction block body and the adhesive heat insulation layer are attached together. Furthermore, the friction block body and the adhesive heat insulation layer are joined by a positioning insert that is inserted into the side groove of the friction block. The threaded connection of the locking screw and the positioning insert enhances the strength of the connection between the friction block body and the adhesive heat insulation layer. The nut of the locking screw is placed within the grooved top slot, ensuring that normal friction braking between the friction block body surface and the brake disc is not affected. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 This is an exploded view of the brake pad assembly of this utility model;

[0017] Figure 3 This is an enlarged view of the side groove of the friction block of this utility model;

[0018] Figure 4 This is a cross-sectional view of the steel back plate of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Brake caliper assembly housing; 2. Brake pad assembly; 3. Brake pad sub-plate; 4. Hydraulic drive chamber; 5. Drive inner rod; 21. Friction block body; 22. Adhesive heat insulation interlayer; 23. Steel back plate; 24. Brake pad; 25. Friction block side groove; 26. Connecting top groove; 27. Positioning insert; 28. Locking screw; 29. ​​Pad insertion hole; 30. Steel protrusion; 31. Steel groove; 32. Interlayer protrusion. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figure 1-4 As shown, this utility model is a parking brake caliper assembly for a fire truck, comprising:

[0023] The system includes a brake caliper assembly housing 1, a brake pad assembly 2, a brake pad sub-plate 3, a hydraulic drive chamber 4, and a drive inner rod 5. Two sets of opposing brake pad assemblies 2 and brake pad sub-plates 3 are installed inside the brake caliper assembly housing 1. During braking, the drive inner rod 5 in the hydraulic drive chamber 4 hydraulically drives the brake pad assembly 2 and brake pad sub-plates 3 to finally clamp them on both sides of the brake disc to complete the parking brake of the fire truck.

[0024] The brake pad assembly 2 consists of a friction block body 21, an adhesive heat insulation layer 22, a steel backing plate 23, and a brake pad 24. These components are stacked sequentially, with the friction block body 21 serving as the contact surface with the brake disc and the steel backing plate 23 acting as the main carrier. A significant amount of heat is generated when the friction block body 21 contacts the brake disc. To greatly reduce heat transfer to the steel backing plate 23, the adhesive heat insulation layer 22 acts as an intermediate layer. The medium is sandwiched between the steel back plate 23 and the friction block body 21. To further improve heat dissipation when the heat insulation interlayer 22 is bonded to the surface of the friction block body 21, longitudinally arranged heat dissipation grooves are formed on the end face of the heat insulation interlayer 22 near the friction block body 21. Multiple sets of heat dissipation grooves are also evenly distributed laterally. This means that after the heat insulation interlayer 22 is bonded to the friction block body 21, a gap is left between the heat insulation interlayer 22 and the friction block body 21 through the heat dissipation grooves, allowing the transferred heat to dissipate through this gap. The internal flow allows for efficient heat dissipation. To enhance the bond between the adhesive heat insulation layer 22 and the friction block body 21, brake pads 24 are provided at both ends of the friction block body 21. Two sets of positioning inserts 27, extending into the side grooves 25 of the friction block, are fixed to the end face of the adhesive heat insulation layer 22 near the friction block body 21. When the friction block body 21 is attached to the surface of the adhesive heat insulation layer 22, the maximum depth of the positioning inserts 27 does not reach the opening of the side groove 25 of the friction block. The opening is also provided with a connecting top groove 26, which is designed as a groove on the surface of the friction block body 21. Therefore, after the positioning insert 27 is inserted into the friction block side groove 25, the locking screw 28 can be placed in the connecting top groove 26. After the locking screw 28 is threadedly connected to the positioning insert 27, the end nut of the locking screw 28 is attached to the bottom of the connecting top groove 26. This can complete the reinforcement of the friction block body 21 and the heat insulation interlayer 22 without affecting the normal contact between the surface of the friction block body 21 and the brake disc.

[0025] To enhance the connection between the heat insulation interlayer 22 and the steel backplate 23, an interlayer protrusion 32 is fixed on the surface of the heat insulation interlayer 22 close to the steel backplate 23. At the same time, a steel groove 31 adapted to the interlayer protrusion 32 is opened on the surface of the steel backplate 23. During bonding, the interlayer protrusion 32 is inserted into the steel groove 31. Similarly, steel protrusions 30 and steel backplates 23 adapted to the steel protrusions 30 are also provided on the surface of the steel backplate 23 and the brake pad 24 to enhance the connection between the steel backplate 23 and the brake pad 24 and improve the stability of the entire friction pad.

[0026] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A fire truck parking brake caliper assembly comprising a brake caliper assembly housing (1), a brake pad assembly (2), a brake pad sub plate (3), a hydraulic drive cartridge (4) and a drive inner lever (5), characterized in that, Also include: The brake pad assembly (2) is composed of a friction block body (21), a pasted thermal insulation interlayer (22), a steel back plate (23) and a brake pad (24), the friction block body (21) is provided with a friction block side groove (25) at both ends, the groove upper end of the friction block side groove (25) is provided with a communication top groove (26), the pasted thermal insulation interlayer (22) is fixedly provided with a positioning plug cylinder (27) extending into the friction block side groove (25) groove near the end face of the friction block body (21), the positioning plug cylinder (27) is threadedly connected with a locking screw (28).

2. A fire apparatus parking brake caliper assembly according to claim 1 wherein, The pasted thermal insulation interlayer (22) is provided with a plurality of groups of longitudinal heat dissipation grooves distributed at intervals on the surface close to the friction block body (21).

3. A fire apparatus parking brake caliper assembly according to claim 1 wherein, The nut end of the locking screw (28) is tightly attached to the groove bottom wall of the communication top groove (26).

4. A fire apparatus parking brake caliper assembly according to claim 1 wherein, The length of the positioning plug cylinder (27) is less than the groove depth of the friction block side groove (25).

5. A fire apparatus parking brake caliper assembly according to claim 1 wherein, The end of the steel back plate (23) close to the pasted thermal insulation interlayer (22) is provided with a steel groove (31), and the pasted thermal insulation interlayer (22) is fixedly provided with an interlayer protrusion (32) extending into the steel groove (31) groove close to one end of the steel back plate (23).

6. A fire apparatus parking brake caliper assembly according to claim 1 wherein, The steel back plate (23) is fixedly provided with a steel protrusion (30) close to the end face of the brake pad (24), and the brake pad (24) is provided with a pad insertion hole (29) matched with the steel protrusion (30) close to the end face of the steel back plate (23).

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