280-type wedge brake

Abstract

The utility model relates to the field of brakes, and provides a 280 type wedge brake which comprises a brake bottom plate, a self-adjusting device assembly and a dust blocking disc, the brake bottom plate is installed on the dust blocking disc, an installation hole is formed in the top of the brake bottom plate, a through hole is formed in the top of the dust blocking disc, and the self-adjusting device assembly is installed in the through hole. The rear end of the self-adjusting device assembly is mounted in the mounting hole and penetrates out of the through hole; the brake shoe further comprises a shoe assembly. The shoe assembly is connected with the brake bottom plate and the self-adjusting device assembly through a quick-release structure; according to the utility model, the iron shoe assembly is fixed by adopting a quick-release structure, so that the iron shoe assembly is very convenient and quick to dismount and mount, the working efficiency is effectively improved, and the mounting cost is reduced; meanwhile, related accessories do not need to be adjusted in the installation process, and the consistency of product quality is effectively guaranteed; meanwhile, a transmission part of the 280-type wedge brake is of a full-sealed structure and is resistant to high-temperature and low-temperature lubricating grease, and the maintenance-free period is 3 years or above.

Description

Technical Field

[0001] The utility model relates to the field of brakes, in particular to a 280-type wedge brake. Background Art

[0002] The existing 280 cam brake has low braking performance and mainly has the following problems:

[0003] (1) The braking response time is long and cannot meet the safety requirements of vehicle braking;

[0004] (2) Complex structure, large number of parts and heavy weight;

[0005] (3) The existing 280 cam brake is a split structure. The brake body, camshaft, clearance adjustment arm, air chamber, air chamber bracket and other parts need to be installed and debugged separately, which is complicated and costly.

[0006] (4) Users are required to perform regular maintenance, which consumes time and money and has low safety performance. Utility Model Content

[0007] The utility model proposes a 280-type wedge brake, which fixes the iron shoe assembly with a quick-release structure, making disassembly and installation very convenient and quick, effectively improving work efficiency and reducing installation costs; at the same time, there is no need to adjust related accessories during the installation process, effectively ensuring the consistency of product quality; at the same time, the transmission components of the 280-type wedge brake of this application adopt a fully sealed structure, are resistant to high and low temperature grease, and have a maintenance-free period of more than 3 years.

[0008] The technical solution of the present utility model is achieved as follows:

[0009] A 280-type wedge brake, comprising: a brake base plate, a self-adjusting assembly, and a dust shield plate, wherein the brake base plate is mounted on the dust shield plate, a mounting hole is provided on the top of the brake base plate, a through hole is provided on the top of the dust shield plate, and a rear end of the self-adjusting assembly is mounted in the mounting hole and protrudes from the through hole;

[0010] Also includes the shoe assembly;

[0011] The horseshoe assembly is connected to the brake base plate and the self-adjuster through a quick-release structure;

[0012] The self-adjusting device is installed in the installation hole through a sealing ring.

[0013] Furthermore, the shoe assembly includes a first shoe with a friction plate assembly, a second shoe with a friction plate assembly, a return tension spring and a locking tension spring;

[0014] The front end of the self-adjusting device is symmetrically provided with a first mounting position and a second mounting position, the inner side of the upper end of the first horseshoe with friction plate assembly is mounted on the first mounting position, and the inner side of the upper end of the second horseshoe with friction plate assembly is mounted on the second mounting position, and the first horseshoe with friction plate assembly and the first mounting position, as well as the second horseshoe with friction plate assembly and the second mounting position, are both connected by the quick-release structure;

[0015] One end of the pull-back spring is mounted on the upper inner side of the first shoe with friction plate assembly, and the other end is mounted on the upper inner side of the second shoe with friction plate assembly, and the pull-back spring is located at the front end of the self-adjuster assembly;

[0016] One end of the locking tension spring is installed on the inner side of the lower part of the first shoe belt friction plate assembly, and the other end is installed on the inner side of the lower part of the second shoe belt friction plate assembly.

[0017] Furthermore, the quick-release structure is a quick-release buckle structure;

[0018] The quick-release buckle structure includes a positioning groove, a clamping block, a positioning cylinder, a clamping ring, a pin hole and a pin shaft;

[0019] A first clamping edge and a second clamping edge are provided on both sides of the front end of the self-adjusting device, and the positioning groove is formed between the first clamping edge and the second clamping edge; the clamping block is provided on the inner side of the top of the first shoe belt friction plate assembly and the second shoe belt friction plate assembly; the clamping block is detachably buckled in the positioning groove;

[0020] The positioning cylinder is symmetrically provided at the bottom of the brake base plate, and the inner sides of the bottom ends of the first shoe with friction plate assembly and the second shoe with friction plate assembly are both provided with the snap ring, and the snap ring is detachably buckled on the positioning cylinder;

[0021] A pin hole is provided in the positioning cylinder, and the pin shaft is detachably installed in the pin hole.

[0022] Furthermore, one positioning cylinder cooperates with two snap rings, and the two snap rings are symmetrically snapped onto the positioning cylinder.

[0023] Furthermore, the first horseshoe with friction plate assembly and the second horseshoe with friction plate assembly have the same structure and are symmetrically arranged with each other.

[0024] Furthermore, the self-adjuster component, dust shield plate, brake base plate, return tension spring and locking tension spring are all radially symmetrical structures.

[0025] Furthermore, two locking tension springs are provided, and the two ends of the two locking tension springs are symmetrically mounted on the front and rear sides of the bottom ends of the first horseshoe with friction plate assembly and the second horseshoe with friction plate assembly.

[0026] Furthermore, two layers of protective covers are provided at the connection between the horseshoe assembly and the self-adjuster.

[0027] The utility model fixes the iron shoe assembly by adopting a quick-release structure, and disassembly and installation are very convenient and quick, which effectively improves work efficiency and reduces installation costs. At the same time, there is no need to adjust related accessories during the installation process, which effectively ensures the consistency of product quality. At the same time, the transmission components of the 280-type wedge brake of this application adopt a fully sealed structure, high and low temperature resistant grease, and a maintenance-free period of more than 3 years. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of a 280-type wedge brake in a specific embodiment of the present utility model;

[0030] Figure 2 for Figure 1 A schematic structural diagram of a brake base plate of a 280-type wedge brake is shown;

[0031] Figure 3 for Figure 1 A schematic structural diagram of the self-adjusting device of a 280-type wedge brake is shown;

[0032] Figure 4 for Figure 1 A schematic structural diagram of a dust shield of a 280-type wedge brake is shown;

[0033] Figure 5 for Figure 1 A schematic structural diagram of a first shoe with a friction plate assembly of a 280-type wedge brake is shown;

[0034] Figure 6 for Figure 1 A schematic structural diagram of a pin shaft of a 280-type wedge brake is shown;

[0035] Figure 7 for Figures 1-6An exploded view of the structure of a 280-type wedge brake is shown;

[0036] Explanation of the accompanying drawings: brake base plate 1; mounting hole 11; self-adjuster assembly 2; first clamping edge 21; second clamping edge 22; first mounting position 201; second mounting position 202; dust shield plate 3; through hole 31; shoe assembly 4; first shoe with friction plate assembly 41; second shoe with friction plate assembly 42; pull-back spring 43; locking spring 44; quick-release structure 5; positioning groove 51; clamping block 52; positioning cylinder 53; pin hole 531; snap ring 54; pin hole 55; pin shaft 56. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] In the specific embodiment of the present invention, see Figure 1-Figure 7 A 280-type wedge brake comprises: a brake base plate 1, a self-adjusting component 2, and a dust shield plate 3. The brake base plate 1 is mounted on the dust shield plate 3. A mounting hole 11 is provided at the top of the brake base plate 1. A through hole 31 is provided at the top of the dust shield plate 3. The rear end of the self-adjusting component 2 is mounted in the mounting hole 11 and passes through the through hole 31. A sealing ring is used to seal the self-adjusting component 2 and the mounting hole 11.

[0039] Also included is a horseshoe assembly 4;

[0040] The shoe assembly 4 is connected to the brake base plate 1 and the self-adjusting device 2 via a quick-release structure 5;

[0041] The self-adjusting component 2 is installed in the mounting hole 11 through the sealing ring 23.

[0042] In the specific embodiment of the present invention, see Figure 1-Figure 7 The shoe assembly 4 includes a first shoe with a friction plate assembly 41, a second shoe with a friction plate assembly 42, a pull-back spring 43 and a locking spring 44;

[0043] The front end of the self-adjusting component 2 is symmetrically provided with a first mounting position 201 and a second mounting position 202. The inner side of the upper end of the first horseshoe with friction plate assembly 41 is mounted on the first mounting position 201, and the inner side of the upper end of the second horseshoe with friction plate assembly 42 is mounted on the second mounting position 202. The first horseshoe with friction plate assembly 41 and the first mounting position 201, as well as the second horseshoe with friction plate assembly 42 and the second mounting position 202 are both connected by the quick-release structure 5.

[0044] One end of the pull-back spring 43 is mounted on the upper inner side of the first shoe with friction plate assembly 41, and the other end is mounted on the upper inner side of the second shoe with friction plate assembly 42, and the pull-back spring 43 is located at the front end of the self-adjuster assembly 2;

[0045] One end of the locking tension spring 44 is mounted on the inner side of the lower portion of the first shoe belt friction plate assembly 41 , and the other end is mounted on the inner side of the lower portion of the second shoe belt friction plate assembly 42 .

[0046] In the specific embodiment of the present invention, see Figure 1-Figure 7 There are two locking tension springs 44, the left ends of the two locking tension springs 44 are symmetrically installed on the front and rear sides of the bottom end of the first horseshoe belt friction plate assembly 41, and the right ends of the two locking tension springs 44 are symmetrically installed on the front and rear sides of the bottom end of the second horseshoe belt friction plate assembly 42 to ensure the stability of the first horseshoe belt friction plate assembly and the second horseshoe belt friction plate assembly.

[0047] In the specific embodiment of the present invention, see Figure 1-Figure 7 , the quick-release structure 5 is a quick-release buckle structure;

[0048] The quick-release buckle structure includes a positioning groove 51, a clamping block 52, a positioning cylinder 53, a clamping ring 54, a pin hole 55 and a pin shaft 56;

[0049] The front end side surfaces of the self-adjusting component 2 are both provided with a first clamping edge 21 and a second clamping edge 22, and the positioning groove 51 is formed between the first clamping edge 21 and the second clamping edge 22; the top inner sides of the first horseshoe with friction plate assembly 41 and the second horseshoe with friction plate assembly 42 are both provided with a clamping block 52; the clamping block 52 is detachably buckled in the positioning groove 51, and the buckling connection is convenient and fast;

[0050] The positioning cylinder 53 is symmetrically provided at the bottom of the brake base plate 1, and the inner sides of the bottom ends of the first shoe with friction plate assembly 41 and the second shoe with friction plate assembly 42 are both provided with the snap ring 54, and the snap ring 54 is detachably buckled on the positioning cylinder 53 to limit the bottoms of the first shoe with friction plate assembly 41 and the second shoe with friction plate assembly 42;

[0051] A pin hole 531 is provided in the positioning cylinder 53 , and the pin shaft 56 is detachably installed in the pin hole 531 to position the first shoe belt friction plate assembly 41 and the second shoe belt friction plate assembly 42 to prevent the retaining ring 54 from being separated from the positioning cylinder 53 .

[0052] In the specific embodiment of the present invention, see Figure 1-Figure 7 One of the positioning cylinders 53 cooperates with two of the snap rings 54, and the two snap rings 54 are symmetrically snapped onto the positioning cylinder 53, with one snap ring 54 in front and one in the back, to ensure the stability of the connection between the bottom of the first shoe with friction plate assembly 41 and the second shoe with friction plate assembly 42 and the brake base plate 1.

[0053] In the specific embodiment of the present invention, see Figure 1-Figure 7 The first horseshoe with friction plate assembly 41 and the second horseshoe with friction plate assembly 42 have the same structure and are symmetrically arranged with each other, so that the brake becomes an equal-force structure to give full play to the self-gain function of the first horseshoe with friction plate assembly 41 and the second horseshoe with friction plate assembly 42.

[0054] In the specific embodiment of the present invention, see Figure 1-Figure 7 The self-adjuster component 2, the dust shield disc 3, the brake base plate 1, the pull-back spring 43 and the locking spring 44 are all radially symmetrical structures, so that the brake is an equal-force structure.

[0055] In the specific embodiment of the present invention, see Figure 1-Figure 7 The connection between the horseshoe assembly and the self-adjuster is provided with two layers of protective covers.

[0056] The 280-type wedge brake in this application is a quick-change, integral 280-type wedge brake structure; by assembling the brake base plate, self-adjusting component and dust shield into a set of integral structure, the camshaft, clearance self-adjusting arm, air chamber bracket and other parts are omitted;

[0057] During installation, the car manufacturer only needs to install the 280 wedge brake assembly on the axle without adjusting or installing other accessories, which ensures the consistency of product quality and effectively reduces installation costs.

[0058] At the same time, the 280-type wedge brake of this application is an isotropic structure, which gives full play to the self-gain function of the leading shoe and improves the braking efficiency by 30-40%;

[0059] Adopting quick-change horseshoe structure and extremely lightweight design, the weight is reduced by 30-40%;

[0060] The structure is simple, the transmission efficiency is over 90%, and the braking efficiency is improved by 30-40%;

[0061] The transmission components of the 280-type wedge brake of the present application adopt a fully sealed structure (mainly including an oil seal provided on the air chamber piston, a sealing ring provided between the self-adjuster assembly and the mounting hole of the brake chassis, and a dust cover provided between the self-adjuster assembly and the shoe assembly), which prevents external impurities from entering the air chamber and self-adjuster. At the same time, the 280-type wedge brake uses high and low temperature resistant grease and has a maintenance-free period of more than three years. Existing cam-type brakes require maintenance every 1-3 months.

[0062] Product costs are reduced by 10%.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A 280-type wedge brake, comprising: A brake base plate, a self-adjuster assembly and a dust shield disc, wherein the brake base plate is mounted on the dust shield disc, a mounting hole is provided on the top of the brake base plate, a through hole is provided on the top of the dust shield disc, and the rear end of the self-adjuster assembly is mounted in the mounting hole and passes through the through hole; It is characterized by: further comprising a horseshoe assembly; The horseshoe assembly is connected to the brake base plate and the self-adjuster through a quick-release structure; The self-adjusting device is installed in the installation hole through a sealing ring.

2. A 280-type wedge brake according to claim 1, characterized in that: The shoe assembly includes a first shoe with friction plate assembly, a second shoe with friction plate assembly, a return spring and a locking spring; The front end of the self-adjusting device is symmetrically provided with a first mounting position and a second mounting position, the inner side of the upper end of the first horseshoe with friction plate assembly is mounted on the first mounting position, and the inner side of the upper end of the second horseshoe with friction plate assembly is mounted on the second mounting position, and the first horseshoe with friction plate assembly and the first mounting position, as well as the second horseshoe with friction plate assembly and the second mounting position, are both connected by the quick-release structure; One end of the pull-back spring is mounted on the upper inner side of the first shoe with friction plate assembly, and the other end is mounted on the upper inner side of the second shoe with friction plate assembly, and the pull-back spring is located at the front end of the self-adjuster assembly; One end of the locking tension spring is installed on the inner side of the lower part of the first shoe belt friction plate assembly, and the other end is installed on the inner side of the lower part of the second shoe belt friction plate assembly.

3. A 280-type wedge brake according to claim 2, characterized in that: The quick-release structure is a quick-release buckle structure; The quick-release buckle structure includes a positioning groove, a clamping block, a positioning cylinder, a clamping ring, a pin hole and a pin shaft; A first clamping edge and a second clamping edge are provided on both sides of the front end of the self-adjusting device, and the positioning groove is formed between the first clamping edge and the second clamping edge; the clamping block is provided on the inner side of the top of the first shoe belt friction plate assembly and the second shoe belt friction plate assembly; the clamping block is detachably buckled in the positioning groove; The positioning cylinder is symmetrically provided at the bottom of the brake base plate, and the inner sides of the bottom ends of the first shoe with friction plate assembly and the second shoe with friction plate assembly are both provided with the snap ring, and the snap ring is detachably buckled on the positioning cylinder; A pin hole is provided in the positioning cylinder, and the pin shaft is detachably installed in the pin hole.

4. A 280-type wedge brake as claimed in claim 3, characterized in that: One positioning cylinder cooperates with two snap rings, and the two snap rings are symmetrically snapped onto the positioning cylinder.

5. A 280-type wedge brake according to claim 2, characterized in that: The first horseshoe with friction plate assembly and the second horseshoe with friction plate assembly have the same structure and are symmetrically arranged with each other.

6. A 280-type wedge brake according to claim 2, characterized in that: The self-adjuster component, the dust shield plate, the brake base plate, the return tension spring and the locking tension spring are all radially symmetrical structures.

7. A 280-type wedge brake according to claim 2, characterized in that: Two locking tension springs are provided, and the two ends of the two locking tension springs are symmetrically mounted on the front and rear sides of the bottom ends of the first horseshoe with friction plate assembly and the second horseshoe with friction plate assembly.

8. A 280-type wedge brake as claimed in claim 2, characterized in that: The connection between the horseshoe assembly and the self-adjuster is provided with two layers of protective covers.

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