A brake pad carrier with split pin structure

Abstract

The utility model discloses a kind of brake pad support mechanisms with split pin structure, including brake pad support, brake pad support lifting pin, lever pin, fastener and the brake pad lock unit installed at the bottom end of brake pad support;Brake pad support upper portion is vertically equipped with the hole for installing the hole of lifting pin shaft, the hole for installing the hole of lifting pin shaft middle part is handled with slot, and the both ends of lifting pin shaft are each equipped with limit slot;Brake pad support middle part is vertically equipped with the hole for installing the hole of lever pin shaft, the hole for installing the hole of lever pin shaft middle part is handled with slot, and one end of lever pin shaft is equipped with limit slot, and it is connected by lever pin shaft and corresponding brake lever;Brake pad support bottom is equipped with brake pad lock unit, and brake pad lock unit elastic element;Elastic element is used to drive the opening and closure of locking block.The utility model facilitates axial positioning, realizes the maximum lightweight, solves the wear problem of pin shaft and bushing in service process, also eliminates vibration and noise caused by fit clearance.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail vehicle brake equipment technical field, especially a brake pad support mechanism with split pin structure. BACKGROUND

[0002] The brake caliper is applied to the disc brake device of the rail vehicle. The brake caliper comprises a caliper mechanism and a brake pad. The structure of the existing caliper mechanism comprises a brake pad support pin, a brake pad support, a caliper arm, a brake pad stopper and a U-shaped spring pin. The brake pad support pin connects the brake pad support and the caliper arm together and transmits the braking force applied by the caliper arm to the brake pad support. The brake pad support further presses the brake pad against the brake disc, and the braking is realized through the friction between the brake pad and the brake disc. When the brake pad is installed, the brake pad is installed in the dovetail groove of the brake pad support through the dovetail structure. The brake pad stopper is locked by the U-shaped spring pin at the end of the dovetail groove to limit the axial movement of the brake pad. At the same time, the brake pad stopper also transmits part of the braking friction force to the brake pad support.

[0003] CN201910602239.9 discloses a caliper mechanism, a brake caliper and a rail vehicle. The rail vehicle comprises a brake caliper, which comprises a caliper mechanism and a brake pad. The caliper mechanism comprises a caliper arm, a brake pad support, a brake pad stopper, a brake pad support pin, a pin hole, a first limiting piece, a second limiting piece and an anti-loosening piece. The brake pad support is connected with the brake pad. The brake pad support is connected with the caliper arm. The brake pad stopper is arranged on the brake pad stopper mounting part. The brake pad support and the caliper arm are connected through the brake pad support pin. The pin hole passes through the brake pad support and the caliper arm. The first limiting piece is fixedly arranged in the pin hole. The second limiting piece is movably arranged in the pin hole. The second limiting piece cooperates with the first limiting piece. The anti-loosening piece is fixedly connected with the second limiting piece. The anti-loosening piece is correspondingly arranged with the brake pad stopper. When the second limiting piece contacts the first limiting piece, the anti-loosening piece blocks one side of the brake pad stopper.

[0004] The shaft pin of the existing brake pad support mechanism is a one-piece structure, which is not conducive to axial positioning. Moreover, the weight of the brake pad support mechanism is too large. The shaft pin is connected through a bushing in the installation space. The bushing is prone to wear and tear, and the clearance is prone to vibration and noise. SUMMARY

[0005] In view of the problems in the prior art, the utility model provides a brake pad support mechanism with a split pin structure, which is convenient for axial positioning, realizes maximum lightweight, and eliminates the bushing structure in the traditional design. The wear and tear of the shaft pin and the bushing during service are solved, and the vibration and noise caused by the clearance are eliminated.

[0006] The utility model discloses a purpose through following technical scheme realizes.

[0007] The application discloses a brake pad support mechanism with a split pin structure, which comprises a brake pad support, a brake pad support lifting pin, a lever pin, a fastener and a brake pad lock unit installed at the bottom end of the brake pad support.

[0008] The two elastic split pins are arranged in 180-degree symmetry and serve as pivot points of the locking block.

[0009] In the closed state, the split pin is also used as a secondary anti-dropping element.

[0010] The brake pad support is designed in a hollow manner and comprises a first hollow position and a second hollow position.

[0011] The brake pad support lifting pin and the lever pin are tightly fitted with the brake pad support mounting holes.

[0012] Compared with the prior art, the application has the advantages that the split pin structure facilitates axial positioning and reduces weight, the brake pad support is designed in a hollow manner to achieve maximum weight reduction, the split pin and the brake pad support mounting hole are tightly fitted to eliminate the bushing structure in the traditional design, the wear problem of the split pin and the bushing during service is solved, and the vibration and noise caused by the fitting gap are eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the overall structure of the application.

[0014] Figure 2 The figure is a schematic diagram of the component mechanism of the application.

[0015] Figure 3 The figure is a schematic diagram of the component mechanism of the application. DETAILED DESCRIPTION

[0016] The application will be described in detail below in combination with the accompanying drawings and specific embodiments.

[0017] As Figure 1As shown, the mechanism mainly includes the brake pad holder 1, the brake pad holder lifting pin 2, the lever pin 3, the fastener 4, and the brake pad locking unit 5 and the secondary anti-loose element 6 installed at the bottom end of the brake pad holder.

[0018] As shown in Figure 2 and 3 The upper part 11 of the brake pad holder is longitudinally provided with a hole 111 for installing the holder lifting pin shaft, and the middle part is slotted 112, which realizes fastening and anti-loosening by the elastic deformation of the brake pad holder. The two ends of the holder lifting pin shaft are respectively provided with limiting grooves 113 to ensure the axial positioning, and the connection with the bogie is realized through the holder lifting pin shaft.

[0019] The middle part 12 of the brake pad holder is vertically provided with holes 121 at the upper and lower ends for installing the lever pin shaft, and the middle part is also slotted 122, which realizes fastening and anti-loosening by the deformation amount of the brake pad holder. The lever pin shaft is provided with a limiting groove 123 at one end for axial limiting. The connection with the corresponding brake lever is realized through the lever pin shaft.

[0020] The bottom part 13 of the brake pad holder is provided with a brake pad locking unit, including a locking block 131, an elastic split pin 132 and an elastic element 133. Among them, two elastic split pins are arranged symmetrically at 180° as the pivot support of the locking block; the elastic element is used to drive the opening and closing of the locking block. In the closed state, an open pin is also provided as a secondary anti-loose element 134, which effectively prevents the locking latch from opening accidentally and avoids the brake pad from loosening or falling off.

[0021] In addition, the brake pad holder adopts a hollow design, including a first hollow position 14 and a second hollow position 15; the first hollow position is vertically distributed inside the reinforcing rib 16 of the brake pad holder; the second hollow position is circumferentially distributed outside the spoke plate 17 of the brake pad holder, realizing the maximum lightweight of the brake pad holder.

[0022] In this mechanism, the pin shaft and the brake pad holder mounting hole are tightly fitted, eliminating the bushing structure in the traditional design, which not only solves the wear problem of the pin shaft and the bushing during service, but also eliminates the vibration and noise caused by the fitting gap.

Claims

1. A brake pad support mechanism with a split pin structure, characterized in that... The device includes a brake pad support, a brake pad support pin, a lever pin, fasteners, and a brake pad locking unit installed at the bottom of the brake pad support. The upper part of the brake pad support has a longitudinal hole for installing the support pin shaft, the hole being slotted in the middle, and each end of the support pin shaft having a limiting groove. The middle of the brake pad support has holes at its upper and lower ends for installing lever pin shafts, the holes being slotted in the middle, and one end of the lever pin shaft having a limiting groove, connecting to a corresponding brake lever. The bottom of the brake pad support has a brake pad locking unit, which includes a locking block, a resilient cotter pin, and a resilient element. The resilient element is used to drive the locking block to open and close.

2. The brake pad support mechanism with a split pin structure according to claim 1, characterized in that... There are two elastic cotter pins, which are arranged symmetrically at 180° to serve as the pivot points of the locking block.

3. A brake pad support mechanism with a split pin structure according to claim 1, characterized in that... In the closed state, a cotter pin is also provided as a secondary anti-detachment element.

4. A brake pad support mechanism with a split pin structure according to claim 1, characterized in that... The brake pad support adopts a hollow design, including a first hollow position and a second hollow position; the first hollow position is vertically distributed on the inner side of the brake pad support reinforcing rib; the second hollow position is circumferentially distributed on the outer side of the brake pad support spoke plate.

5. A brake pad support mechanism with a split pin structure according to claim 1, characterized in that... The support pin and lever pin are tightly fitted with the brake pad support mounting hole, respectively.

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