Elastic pressing mechanism for drum brake pad

Abstract

The utility model relates to the technical field of brake pad production, in particular to a drum brake pad elastic pressing mechanism which comprises a cross beam and two door-shaped frames, the two ends of the cross beam are perpendicularly connected to the tops of the two door-shaped frames respectively, the cross beam is horizontally arranged, and door openings in the door-shaped frames are used for conveying drum brake pads. A lifting driving part which is vertically arranged is arranged in the middle of the cross beam, an elastic strip-shaped plate is fixed to the bottom of the lifting driving part and is horizontally arranged, at least three brake pad pressing blocks which are arranged at intervals are arranged at the bottom of the elastic strip-shaped plate, and each brake pad pressing block is used for pressing one drum type brake pad. According to the elastic downward pressing mechanism for the drum brake pad, during chamfering machining, the lifting driving part is started, the elastic strip-shaped plate and the brake pad pressing blocks are driven to the lowest position, then the multiple brake pad pressing blocks can press and fix the drum brake pad on the lower portion, the difficulty of uninterrupted conveying of the brake pad is effectively reduced, and the machining efficiency is improved. And efficient switching of the brake pad for chamfering is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of brake pad production, and in particular to an elastic downward pressing mechanism for a drum brake pad. Background Art

[0002] Automobile brake pads, also called automobile brake leathers, refer to the friction materials fixed on the brake drum or brake disc that rotates with the wheel. The friction lining and friction blocks bear external pressure, generating friction to achieve the purpose of vehicle deceleration. According to the brake type, they can be divided into brake pads for disc brakes, brake pads for drum brakes, and brake pads for large trucks. During the manufacturing process, drum brake pads need to be chamfered to meet the requirements of heat dissipation and dust removal.

[0003] After searching, the Chinese patent with application number: 202110633707.6 discloses a drum brake pad chamfering device, including a frame, a loading rack mounted on the frame, a conveying platform mounted on the frame, a rotating shaft rotatably connected to the frame, a driving motor driving the rotating shaft to rotate, a chamfering motor mounted on the frame, and a chamfering tool mounted on the output shaft of the chamfering motor. The frame is fixed with a clamping mechanism, and the clamping mechanism is used to press the drum brake pad on the conveying platform downward to facilitate the chamfering process by the chamfering tool. The clamping mechanism includes a clamping frame fixed to the frame, a clamping sheet, and a plurality of clamping springs, the lower end of the clamping spring is fixed to the clamping sheet, and the upper end is fixed to the clamping frame.

[0004] With respect to the above-mentioned related technologies, the inventor believes that there are the following technical defects that need to be improved:

[0005] Most common brake pad clamping mechanisms use a clamping spring to generate downward pressure on the brake pad. However, the pressure of the clamping spring always exists, which will cause the clamping plate to constantly press the brake pad on the conveying platform, increasing the difficulty of uninterrupted conveying of the brake pad and hindering efficient switching of the brake pad for chamfering. Utility Model Content

[0006] The present application provides a drum brake pad elastic pressing mechanism to improve the following technical problems:

[0007] Most common brake pad clamping mechanisms use a clamping spring to generate downward pressure on the brake pad. However, the pressure of the clamping spring always exists, which will cause the clamping plate to constantly press the brake pad on the conveying platform, increasing the difficulty of uninterrupted conveying of the brake pad and hindering efficient switching of the brake pad for chamfering.

[0008] The present application provides a drum brake pad elastic pressing mechanism, which adopts the following technical solution:

[0009] A drum brake pad elastic downward pressing mechanism comprises a crossbeam and two groups of portal frames, the two ends of the crossbeam are respectively vertically connected to the tops of the two groups of portal frames, the crossbeam is horizontally arranged, and the door openings in the portal frames are used for conveying drum brake pads. A vertically arranged lifting drive unit is provided in the middle of the crossbeam, and an elastic strip plate is fixed to the bottom of the lifting drive unit, the elastic strip plate is horizontally arranged, and at least three brake pad pressing blocks arranged at intervals are provided at the bottom of the elastic strip plate, and each of the brake pad pressing blocks is used to press a drum brake pad.

[0010] In an achievable technical solution of the present application, the lifting drive unit includes a telescopic drive member, a connecting plate and two groups of sliding assemblies, the connecting plate is fixed to the bottom of the telescopic rod of the telescopic drive member, the connecting plate is horizontally arranged and connected to the middle part of the elastic strip plate, the sliding assembly is connected between the connecting plate and the crossbeam, and the two groups of sliding assemblies are respectively located on opposite sides of the telescopic drive member.

[0011] In an achievable technical solution of the present application, the sliding group includes a sliding sleeve and a guide rod, the bottom of the guide rod is fixed to the connecting plate, the sliding sleeve is vertically arranged and passes through the cross beam, and the guide rod slides through the sliding sleeve.

[0012] In an achievable technical solution of the present application, the sliding group also includes two groups of telescopic folding covers for dust prevention, the guide rod passes through the telescopic folding covers, one group of the telescopic folding covers is clamped between the connecting plate and the bottom of the sliding sleeve, and the other group of the telescopic folding covers is clamped between the top of the guide rod and the top of the sliding sleeve.

[0013] In an achievable technical solution of the present application, the telescopic driving member is a servo cylinder, an oil cylinder or an electric push rod.

[0014] In an achievable technical solution of the present application, the elastic strip plate is a stainless steel plate, and the width of the elastic strip plate is between 5-15 cm, and the length of the elastic strip plate is between 50-100 cm.

[0015] In an achievable technical solution of the present application, the brake pad pressing block is a square soft rubber plate, and the soft rubber plate is fixed to the lower surface of the elastic strip plate by a plurality of sets of screws.

[0016] In an achievable technical solution of the present application, the crossbeam includes a beam bottom plate and two beam side plates, the two beam side plates are vertically connected to opposite sides of the beam bottom plate, and the cross section of the crossbeam is a U-shaped structure with the opening arranged upward.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] Drum brake pads do not need to be pressed during transportation. At this time, the lifting drive unit is not started, the elastic strip plate and the brake pad pressing block are in the highest position, and the brake pad pressing block does not contact the drum brake pad being transported. During chamfering, the lifting drive unit is started, and the elastic strip plate and the brake pad pressing block are driven to the lowest position, and then multiple brake pad pressing blocks will respectively press and fix the drum brake pads below, which is conducive to subsequent precise chamfering processing, effectively reducing the difficulty of uninterrupted transportation of brake pads, and is conducive to efficient switching of brake pads for chamfering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of the elastic downward pressing mechanism of the drum brake pad in an embodiment of the present application.

[0021] Description of reference numerals:

[0022] 1. Crossbeam; 11. Beam bottom plate; 12. Beam side plate; 2. Door frame; 3. Lifting drive unit; 31. Telescopic drive member; 32. Connecting plate; 33. Sliding assembly; 331. Sliding sleeve; 332. Guide rod; 333. Telescopic folding cover; 4. Elastic strip plate; 5. Brake pad pressure block. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] The following is combined with Figure 1 This application is described in further detail.

[0028] The present application embodiment discloses a drum brake pad elastic pressing mechanism. Figure 1 The elastic downward pressing mechanism of the drum brake pad comprises a cross beam 1 and two groups of portal frames 2. The two ends of the cross beam 1 are respectively vertically connected to the tops of the two groups of portal frames 2. The cross beam 1 is arranged horizontally. The door openings in the portal frames 2 are used for conveying the drum brake pads. A vertically arranged lifting drive unit 3 is provided in the middle of the cross beam 1. An elastic strip plate 4 is fixed to the bottom of the lifting drive unit 3. The elastic strip plate 4 is arranged horizontally. At least three brake pad pressing blocks 5 are arranged at intervals at the bottom of the elastic strip plate 4. Each brake pad pressing block 5 is used to press a drum brake pad.

[0029] The beneficial technical effects of the drum brake pad elastic pressing mechanism of the embodiment of the present application are roughly as follows:

[0030] The drum brake pad does not need to be pressed during transportation. At this time, the lifting drive unit 3 is not started, the elastic strip plate 4 and the brake pad pressing block 5 are in the highest position, and the brake pad pressing block 5 does not contact the drum brake pad being transported. During chamfering, the lifting drive unit 3 is started, the elastic strip plate 4 and the brake pad pressing block 5 are driven to the lowest position, and then multiple brake pad pressing blocks 5 will respectively press and fix the drum brake pad below, which is conducive to subsequent precise chamfering processing, effectively reducing the difficulty of uninterrupted transportation of brake pads, and is conducive to efficient switching of brake pads for chamfering. In addition, the overall structure is simple, the operation is stable, and the production cost is relatively low.

[0031] In this embodiment, the lifting drive unit 3 includes a telescopic drive member 31, a connecting plate 32 and two groups of sliding components 33. The connecting plate 32 is fixed to the bottom of the telescopic rod of the telescopic drive member 31. The connecting plate 32 is horizontally arranged and connected to the middle of the elastic strip plate 4. The sliding component 33 is connected between the connecting plate 32 and the beam 1. The two groups of sliding components 33 are respectively located on the opposite sides of the telescopic drive member 31.

[0032] The sliding group includes a sliding sleeve 331 and a guide rod 332 . The bottom of the guide rod 332 is fixed on the connecting plate 32 . The sliding sleeve 331 is arranged vertically and passes through the cross beam 1 . The guide rod 332 slides through the sliding sleeve 331 .

[0033] In order to prevent debris generated during the chamfering process from entering between the sliding sleeve 331 and the guide rod 332, the sliding group also includes two sets of telescopic folding covers 333 for dust prevention. The guide rod 332 passes through the telescopic folding covers 333. One set of telescopic folding covers 333 is clamped between the connecting plate 32 and the bottom of the sliding sleeve 331, and the other set of telescopic folding covers 333 is clamped between the top of the guide rod 332 and the top of the sliding sleeve 331, so that the sliding between the sliding sleeve 331 and the guide rod 332 will be smoother.

[0034] Specifically, the telescopic driving member 31 is a servo cylinder. In other embodiments, the servo cylinder can also be replaced by an oil cylinder or an electric push rod.

[0035] The lifting drive part 3 designed as above has a simple structure, and has relatively low manufacturing and maintenance costs, and is stable in operation and can drive the elastic strip plate 4 to rise and fall smoothly.

[0036] In this embodiment, in order to extend the service life of the elastic strip plate 4, the elastic strip plate 4 is a stainless steel plate, and the width of the elastic strip plate 4 is between 5-15 cm, and the length of the elastic strip plate 4 is between 50-100 cm.

[0037] In order to prevent the upper surface of the drum brake pad from being crushed, the brake pad pressing block 5 is a square rubber soft plate, which is fixed to the lower surface of the elastic strip plate 4 by multiple sets of screws.

[0038] In order to improve the structural strength of the beam 1 while reducing the weight, the beam 1 includes a beam bottom plate 11 and two beam side plates 12. The two beam side plates 12 are vertically connected to the opposite sides of the beam bottom plate 11. The cross section of the beam 1 is a U-shaped structure with the opening arranged upward.

[0039] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.

Claims

1. A drum brake pad elastic pressing mechanism, characterized in that: The invention comprises a crossbeam (1) and two groups of gantry frames (2), the two ends of the crossbeam (1) are respectively vertically connected to the tops of the two groups of gantry frames (2), the crossbeam (1) is arranged horizontally, the door opening in the gantry frames (2) is used for conveying drum brake pads, a vertically arranged lifting drive unit (3) is arranged in the middle of the crossbeam (1), an elastic strip plate (4) is fixed at the bottom of the lifting drive unit (3), the elastic strip plate (4) is arranged horizontally, and at least three brake pad pressing blocks (5) arranged at intervals are arranged at the bottom of the elastic strip plate (4), and each of the brake pad pressing blocks (5) is used for pressing a drum brake pad.

2. The drum brake pad elastic pressing mechanism according to claim 1, characterized in that: The lifting drive part (3) comprises a telescopic drive member (31), a connecting plate (32) and two groups of sliding components (33); the connecting plate (32) is fixed to the bottom of the telescopic rod of the telescopic drive member (31); the connecting plate (32) is horizontally arranged and connected to the middle of the elastic strip plate (4); the sliding component (33) is connected between the connecting plate (32) and the crossbeam (1); and the two groups of sliding components (33) are respectively located on opposite sides of the telescopic drive member (31).

3. The drum brake pad elastic pressing mechanism according to claim 2, characterized in that: The sliding group comprises a sliding sleeve (331) and a guide rod (332), the bottom of the guide rod (332) is fixed on the connecting plate (32), the sliding sleeve (331) is arranged vertically and passes through the crossbeam (1), and the guide rod (332) slides through the sliding sleeve (331).

4. The drum brake pad elastic pressing mechanism according to claim 3, characterized in that: The sliding group also includes two groups of telescopic folding covers (333) for dust prevention, the guide rod (332) passes through the telescopic folding covers (333), one group of the telescopic folding covers (333) is clamped between the connecting plate (32) and the bottom of the sliding sleeve (331), and the other group of the telescopic folding covers (333) is clamped between the top of the guide rod (332) and the top of the sliding sleeve (331).

5. The drum brake pad elastic pressing mechanism according to claim 2, characterized in that: The telescopic driving member (31) is a servo cylinder, an oil cylinder or an electric push rod.

6. The drum brake pad elastic pressing mechanism according to claim 1, characterized in that: The elastic strip plate (4) is a stainless steel plate, the width of the elastic strip plate (4) is between 5 and 15 centimeters, and the length of the elastic strip plate (4) is between 50 and 100 centimeters.

7. The drum brake pad elastic pressing mechanism according to claim 1, characterized in that: The brake pad pressing block (5) is a square soft rubber plate, and the soft rubber plate is fixed to the lower surface of the elastic strip plate (4) by means of a plurality of sets of screws.

8. The drum brake pad elastic pressing mechanism according to claim 1, characterized in that: The cross beam (1) comprises a beam bottom plate (11) and two beam side plates (12), wherein the two beam side plates (12) are respectively vertically connected to opposite sides of the beam bottom plate (11), and the cross section of the cross beam (1) is a U-shaped structure with an opening arranged upward.

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