A brake shoe grinding and locking device

Abstract

This utility model discloses a brake pad grinding locking device, relating to the technical field of brake pad grinding devices, to solve the problem of inconsistent locking force when using a vise to hold the brake pad, which affects the quality and efficiency of brake pad grinding. The device includes: a mounting base, a first brake pad fixture, a second brake pad fixture, a driving device, and a clamping block; the first and second brake pad fixtures are arranged facing each other on the mounting base, and both fixtures have fixing grooves on their inner sides for holding the dovetail plate of the brake pad. The first brake pad fixture is fixedly connected to the mounting base, and the second fixture is slidably connected to the mounting base. The driving device is fixedly connected to the mounting base, and its output end is fixedly connected to the clamping block, which abuts against the second brake pad fixture. This locking device ensures a stable locking force on the brake pad, preventing shaking during brake pad grinding and improving the quality and efficiency of brake pad grinding.

Description

Technical Field

[0001] This utility model relates to the technical field of brake pad grinding devices, and in particular to a brake pad grinding locking device. Background Technology

[0002] During braking, urban rail transit vehicles rely on the friction between brake pads and brake discs to generate braking force. Frequent braking can cause irregular wear on the surface of the brake pads, affecting braking performance and driving safety. Therefore, it is necessary to periodically grind the surface of the brake pads to restore their braking performance. Current brake pad grinding methods involve manual grinding of the brake pad surface using a bench vise and an angle grinder. However, the bench vise clamping fixture can have inconsistent locking force, and manual grinding requires a high level of skill from the operator. These factors can lead to inconsistent brake pad height after grinding. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a brake pad grinding and locking device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A brake pad grinding and locking device is provided, characterized in that it includes: a mounting base, a first brake pad fixture, a second brake pad fixture, a driving device, and a clamping block; The first brake pad fixture and the second brake pad fixture are arranged facing each other on the mounting base. The inner sides of the first brake pad fixture and the second brake pad fixture are provided with fixing grooves for holding the dovetail plate of the brake pad. The first brake pad fixture is fixedly connected to the mounting base, the second brake pad fixture is slidably connected to the mounting base, the clamping block abuts against the mounting base and the second brake pad fixture, the driving device is fixedly connected to the mounting base, and the output end of the driving device is fixedly connected to the clamping block.

[0005] Compared with the prior art, the present invention has the following technical effects: In the brake pad grinding and locking device of this application, the clamping block is driven by the driving device to move inward or outward. When moving inward, the clamping block will drive the second brake pad fixture to move toward the fixed first brake pad fixture, thereby clamping the brake pad. The dovetail plate of the brake pad is fixed by the fixing groove set on the opposite side of the first and second brake pad fixtures, ensuring a stable locking force on the brake pad. The locking structure design can meet the requirement of stable locking with a small driving force. There will be no shaking during brake pad grinding, thus improving the quality and efficiency of brake pad grinding. Attached Figure Description

[0006] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the brake pad grinding and locking device in an embodiment of this utility model; Figure 2 for Figure 1 A schematic diagram of the guide rod side of the brake pad grinding and locking device; Figure 3 for Figure 1 Top view of the brake pad grinding and locking device; Figure 4 for Figure 1 Cross-sectional view of the brake pad grinding and locking device in the middle; Figure 5 for Figure 1 A schematic diagram of the brake pads being held in place by the locking device during brake pad grinding.

[0007] Figure label: 110-Mounting base, 115-Positioning block, 120-First brake pad fixture, 125-Fixing groove, 130-Second brake pad fixture, 140-Pressure block, 150-Drive device, 160-Guide rod, 170-Elastic return device. Detailed Implementation

[0008] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0009] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0010] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0011] Please see Figures 1 to 5 The brake pad grinding and locking device provided in this embodiment includes: a mounting base 110, a first brake pad fixture 120, a second brake pad fixture 130, a driving device 150, and a clamping block 140. The first brake pad fixture 120 and the second brake pad fixture 130 are arranged facing each other on the mounting base 110. The inner sides of the first brake pad fixture 120 and the second brake pad fixture 130 are provided with fixing grooves 125 for holding the dovetail plate of the brake pad. The first brake pad fixture 120 is fixedly connected to the mounting base 110, the second brake pad fixture 130 is slidably connected to the mounting base 110, the clamping block 140 abuts against the mounting base 110 and the second brake pad fixture 130, the driving device 150 is fixedly connected to the mounting base 110, and the output end of the driving device 150 is fixedly connected to the clamping block 140.

[0012] In practice: The brake pad grinding and locking device utilizes the self-locking characteristic of the wedge-shaped force amplification mechanism to convert a small axial input force into a radial high-ratio clamping force through normal force decomposition. This ensures that the brake pads maintain zero displacement positioning during milling, enabling convenient installation and stable locking of the brake pads. It is particularly suitable for the synchronous locking of pairs of brake pads in the same disc brake, ensuring high consistency of the ground brake pads, and can be extended to batch processing of multiple pairs of brake pads.

[0013] The locking device includes a mounting base 110, a first brake pad fixture 120, a second brake pad fixture 130, a clamping block 140, a drive device 150, a guide rod 160, and an elastic return device 170. The mounting base 110 serves as the basic support structure for the entire device. The first brake pad fixture 120 is fixedly mounted on the mounting base 110, and the second brake pad fixture 130 is movably connected to the mounting base 110. The drive device 150 is a telescopic cylinder fixedly mounted on the mounting base 110, with its output end connected to the clamping block 140. The drive device 150 is a telescopic cylinder driven by various methods such as electric, hydraulic, or pneumatic power. The guide rod 160 is fixedly connected to the mounting base 110 and passes through a shaft hole provided on the second brake pad fixture 130. The elastic return device 170 is fitted onto the guide rod 160 and located between the second brake pad fixture 130 and the mounting base 110. The elastic return device 170 is selected from return springs or other elastic devices.

[0014] When the locking device holds and fixes the brake pad, it holds the dovetail plate of the brake pad. When placing the brake pad, the dovetail plate of the brake pad to be repaired is placed between the first brake pad fixture 120 and the second brake pad fixture 130. A V-shaped groove matching the dovetail plate is provided between the first brake pad fixture 120 and the second brake pad fixture 130. When driving the clamping, the telescopic cylinder is activated, its piston rod retracts, and pushes the wedge-shaped clamping block 140 to move inward. The inclined surface of the wedge-shaped clamping block 140 acts on the corresponding inclined surface of the second brake pad fixture 130, so that the second brake pad fixture 130 overcomes the elastic force of the elastic return device 170 and moves along the guide rod 160 towards the first brake pad fixture 120 to the preset position. During this process, the return spring on the guide rod 160 is compressed. Upon completion of locking, when the second brake pad fixture 130 is in position, its V-shaped groove, together with the V-shaped groove of the first brake pad fixture 120, effectively presses against the dovetail plate of the brake pad, firmly locking the brake pad in the locking device. This ensures that the brake pad is completely constrained by the device, forming a stable whole that meets the requirements of high-precision grinding. The mounting base 110 is also provided with mounting holes, allowing the locking device to be installed on the brake pad grinding worktable.

[0015] The release of the brake pad is the reverse of the clamping operation. When the clamping is released, the telescopic cylinder extends, and the piston rod drives the wedge-shaped clamping block 140 to move outward, releasing the wedge clamping on the second brake pad fixture 130. When the elastic return device 170 resets, the compressed return spring releases its elastic force, pushing the second brake pad fixture 130 to move along the guide rod 160 away from the first brake pad fixture 120 (i.e., the initial position). This action simultaneously releases the clamping force between the brake pad dovetail plate and the V-shaped groove of the first brake pad fixture 120 and the second brake pad fixture 130. When removing the brake pad, the brake pad dovetail plate separates from the first brake pad fixture 120 and the second brake pad fixture 130, allowing the refurbished brake pad to be easily removed.

[0016] In the brake pad grinding and locking device of this application, the clamping block is driven by the driving device to move inward or outward. When moving inward, the clamping block will drive the second brake pad fixture to move toward the fixed first brake pad fixture, thereby clamping the brake pad. The dovetail plate of the brake pad is fixed by the fixing groove set on the opposite side of the first and second brake pad fixtures, ensuring a stable locking force on the brake pad. During brake pad grinding, there will be no shaking, thus improving the quality and efficiency of brake pad grinding.

[0017] The driving device 150 drives the clamping block 140 to achieve a stable and consistent locking force, ensuring machining accuracy. It can simultaneously lock paired brake pads of the same disc brake for grinding, effectively ensuring the high consistency of key parameters such as height and angle of the two brake pads after grinding, meeting the requirements of the braking system.

[0018] As one possible implementation, the clamping block 140 is a wedge-shaped block, and the side of the second brake pad fixture 130 facing the wedge-shaped block is an inclined surface.

[0019] The wedge-shaped clamping block 140 can drive the second brake pad fixture 130 to move toward the first brake pad fixture 120 when the driving device 150 drives the clamping block 140 to move inward. Furthermore, the wedge-shaped clamping block 140 also achieves self-locking.

[0020] As one possible implementation, a positioning block 115 is provided on the side of the mounting base 110 away from the first brake pad fixture 120; the clamping block 140 abuts against the positioning block 115, and the clamping block 140 moves along the direction of the positioning block 115.

[0021] The positioning block 115 abuts against the clamping block 140. The positioning block 115 provides a limiting and guiding function for the clamping block 140, ensuring the driving effect of the clamping block 140 on the second brake pad fixture 130.

[0022] As one possible implementation, the locking device further includes a guide rod 160 and an elastic return device 170; the guide rod 160 is fixedly connected to the mounting base 110 and is arranged along the movement direction of the second brake pad fixture 130, the second brake pad fixture 130 is slidably connected to the guide rod 160, the elastic return device 170 is fitted on the guide rod 160, and the two ends of the elastic return device 170 abut against the mounting base 110 and the second brake pad fixture 130.

[0023] The guide rod provides guidance for the movement of the second brake pad fixture 130. The elastic return device 170 is located on the side of the second brake pad fixture 130 facing the first brake pad fixture 120. When the second brake pad fixture 130 moves toward the first brake pad fixture 120, the elastic return device 170 is compressed. When the clamping block 140 moves outward under the drive of the drive device 150, the second brake pad fixture 130 will be reset under the action of the elastic return device 170.

[0024] As one possible implementation, the mounting base 110 is provided with a mounting groove, and the guide rod 160 and the elastic recovery device 170 are disposed in the mounting groove.

[0025] The mounting slot allows for the installation of the guide post and the elastic recovery device 170.

[0026] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A brake pad dressing and locking device characterized by, The utility model relates to a brake caliper locking device, including: Mounting seat, first brake pad fixture, second brake pad fixture, drive device and compression block; The first brake pad fixture and the second brake pad fixture are oppositely arranged on the mounting seat, and the inner side of the first brake pad fixture and the second brake pad fixture are provided with fixed slots for holding brake pad dovetail plates, the first brake pad fixture is fixedly connected with the mounting seat, the second brake pad fixture is slidingly connected with the mounting seat, the compression block is abutted with the mounting seat and the second brake pad fixture, the drive device is fixedly connected with the mounting seat, and the output end of the drive device is fixedly connected with the compression block.

2. The brake pad truing and locking device of claim 1, wherein, The compression block is a wedge-shaped block, and the side of the second brake pad fixture towards the wedge-shaped block is a slope.

3. The brake pad truing and locking device of claim 2, wherein, The side of the mounting seat away from the first brake pad fixture is provided with a positioning block. The compression block is abutted with the positioning block, and the compression block moves along the direction of the positioning block.

4. The brake pad truing and locking device of claim 1, wherein, The locking device further includes a guide rod and an elastic recovery device. The guide rod is fixedly connected with the mounting seat and is arranged along the movement direction of the second brake pad fixture, the second brake pad fixture is slidingly connected with the guide rod, the elastic recovery device is sleeved on the guide rod, and the two ends of the elastic recovery device are abutted with the mounting seat and the second brake pad fixture.

5. The brake pad truing and locking device of claim 4 wherein, The mounting seat is provided with a mounting groove, and the guide rod and the elastic recovery device are arranged in the mounting groove.

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