Tile holder for friction-wear experiment of composition brake shoe

Abstract

The utility model relates to the field of railway product part processing and manufacturing, in particular to a shoe holder for a composition brake shoe friction and wear experiment, which comprises a bottom plate, fixing screw holes are arranged on the bottom plate, two support plates which are oppositely arranged are fixedly mounted at the top of the bottom plate, and arc-shaped surfaces matched with steel backs of composition brake shoes are arranged at the tops of the support plates. A tile nose is arranged in the middle of the back face of the steel backing, and a positioning groove matched with the tile nose is formed in the top of the supporting plate. A plurality of connecting columns are fixedly installed between the two supporting plates, the connecting columns are arranged in two rows up and down, each row of connecting columns are distributed in an arc shape, tile nose fibers are arranged between the two rows of connecting columns in a penetrating mode, and the tile nose fibers penetrate through tile noses, so that the phenomena of abnormal vibration and noise in the friction and wear experiment process can be reduced; and the convenience of the friction and wear performance and physical and mechanical performance experiments of the composition brake shoe is improved.

Description

Technical Field

[0001] The utility model relates to the field of processing and manufacturing railway product parts, in particular to a shoe support for synthetic brake shoe friction and wear experiments. Background Art

[0002] There are many ways of train braking, including resistance braking, magnetic rail braking, eddy current braking, friction braking, etc. Among them, friction braking is indispensable. The performance of brake shoes and brake pads has become an important aspect related to the safety of train operation.

[0003] Friction and wear performance and physical and mechanical performance tests are important performance tests for brake shoes and pads. The results of friction and wear performance tests directly affect whether the train brake shoes and pads are qualified. In addition, the standards for train brake shoes and pads all require the use of a 1:1 friction and wear performance tester to test the product.

[0004] Although the 1:1 friction and wear performance tester uses 1:1 train wheels for testing, the clamp structure of the friction and wear performance tester is different from the clamp shape of the actual vehicle, which leads to the mismatch between the actual train wheel and the clamp used in the friction and wear performance test. Then, vibration and noise occurred in the subsequent test process, resulting in inaccurate results of the friction and wear performance test.

[0005] Therefore, there is an urgent need in the market for a high-abrasion synthetic brake shoe support suitable for friction and wear performance experiments. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a shoe support for a synthetic brake shoe friction and wear test, which is more firmly combined with a testing machine clamp to solve the problems in the prior art.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a shoe support for synthetic brake shoe friction and wear experiments, comprising a base plate, the base plate is provided with fixing screw holes, two support plates arranged opposite to each other are fixedly installed on the top of the base plate, the top of the support plate is provided with an arc surface matching the steel back of the synthetic brake shoe, the middle part of the back side of the steel back is provided with a shoe nose, and the top of the support plate is provided with a positioning groove matching the shoe nose; a plurality of connecting columns are fixedly installed between the two support plates, the connecting columns are provided with two rows up and down, each row of the connecting columns are distributed in an arc shape, a shoe nose fiber is passed through the two rows of the connecting columns, and the shoe nose fiber passes through the shoe nose.

[0008] As a further improvement, one end of the shoe nose fiber is provided with a bending portion for hooking one of the connecting columns, and a locking rod for preventing the bending portion from being separated from the connecting column is fixedly mounted on the support plate.

[0009] As a further improvement, two grooves are symmetrically provided at both ends of the top of the support plate, a positioning block is fixedly installed in the corresponding grooves of the two support plates, and protrusions are provided at both ends of the back side of the steel back, and the positioning block is supported on the inner side of the corresponding protrusions.

[0010] As a further improvement, the shoe nose fiber is arc-shaped, and the interval between the two rows of connecting columns is consistent with the thickness of the shoe nose fiber.

[0011] As a further improvement, an insert block is provided at the bottom of the support plate, and a socket for inserting the insert block is provided on the bottom plate.

[0012] After adopting the above technical solution, the beneficial effects of the utility model are:

[0013] The present application uses hexagon socket screws to connect and fix the base plate and the testing machine clamp, places the synthetic brake shoe on the top of the two support plates, and passes the shoe nose fiber through the shoe nose, and then the friction and wear test detection operation can be started. The combination of the shoe support and the testing machine clamp of the present application is more firmly combined, which can reduce the occurrence of abnormal vibration and noise during the friction and wear test, and improves the convenience of the friction and wear performance and physical and mechanical performance experiments of the synthetic brake shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the bottom of the bottom plate of an embodiment of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the support plate of the bottom plate of an embodiment of the utility model;

[0018] Figure 4 This is a schematic structural diagram of a connecting column according to an embodiment of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the nose fiber of the utility model embodiment.

[0020] In the figure: 1-base plate; 2-fixing screw hole; 3-support plate; 4-insert block; 5-insert hole; 6-positioning groove; 7-groove; 8-positioning block; 9-protrusion; 10-connecting column; 11-shoe nose fiber; 12-bending part; 13-locking rod; 14-synthetic brake shoe; 15-steel back; 16-shoe nose. DETAILED DESCRIPTION

[0021] like Figures 1 to 5 As shown, a synthetic brake shoe friction and wear test shoe support includes a rectangular bottom plate 1, and four corners of the bottom plate 1 are respectively provided with fixing screw holes 2 to facilitate connection and fixing with the test machine clamp, such as Figure 2 As shown, the back side of the base plate 1 is designed with a T-shaped groove according to the protrusion of the clamp of the friction and wear performance testing machine.

[0022] Two support plates 3 arranged front and back oppositely are fixedly installed on the top of the base plate 1, and plug blocks 4 are integrally formed at both ends of the bottom of the support plate 3. Four plug holes 5 are distributed in a rectangular array on the base plate 1, and the plug holes 5 correspond to the plug blocks 4 one by one. When installing the support plate 3, the plug blocks 4 at the bottom of the support plate 3 are inserted into the corresponding plug holes 5 of the base plate 1, thereby positioning the support plate 3 and improving the stability of the connection between the support plate 3 and the base plate 1. After the plug blocks 4 are inserted into the plug holes 5, the support plate 3 and the base plate 1 are connected and fixed by welding.

[0023] The top of the support plate 3 is provided with an arc surface matching the steel back 15 of the synthetic brake shoe 14, the middle of the back of the steel back 15 is provided with a shoe nose 16, and the top of the support plate 3 is provided with a positioning groove 6 matching the shoe nose 16. In addition, two grooves 7 are symmetrically provided at both ends of the top of the support plate 3, and a positioning block 8 is embedded in the corresponding grooves 7 of the two support plates 3. The top of the positioning block 8 is in an arc shape matching the steel back 15 of the synthetic brake shoe 14, and protrusions 9 are provided at both ends of the back of the steel back 15. The interval between the two support plates 3 is consistent with the width of the protrusion 9, which can prevent the synthetic brake shoe 14 from sliding forward and backward on the top of the support plate 3; the positioning block 8 is supported on the inner side of the corresponding protrusion 9, which can prevent the synthetic brake shoe 14 from sliding left and right on the top of the support plate 3.

[0024] A plurality of connecting columns 10 are fixedly installed between the two support plates 3. Through holes corresponding to the connecting columns 10 are respectively provided on the two support plates 3. Both ends of the connecting columns 10 are respectively inserted into the corresponding through holes, and both ends of the connecting columns 10 are respectively provided with shaft shoulders. Figure 4 As shown, the connecting column 10 can be prevented from moving back and forth in the two through holes. Figure 5As shown, there are two rows of connecting columns 10, each row of connecting columns 10 is distributed in an arc shape, and the centers of the arcs of the upper and lower rows of connecting columns 10 coincide with each other. A shoe nose fiber 11 is passed through the two rows of connecting columns 10, and the shoe nose fiber 11 passes through the shoe nose 16, which can prevent the synthetic brake shoe 14 from detaching upward from the support plate 3. The shoe nose fiber 11 is arc-shaped, and the interval between the two rows of connecting columns 10 is consistent with the thickness of the shoe nose fiber 11, so that the shoe nose fiber 11 is fixed by the two rows of connecting columns 10, reducing the activity margin of the synthetic brake shoe 14.

[0025] A bending portion 12 for hooking one of the connecting columns 10 is provided at one end of the shoe nose fiber 11, and a locking rod 13 for preventing the bending portion 12 from detaching from the connecting column 10 is fixedly installed on the support plate 3. The locking rod 13 is specifically a hexagon socket bolt, and the locking rod 13 is threadedly connected to the two support plates 3 to ensure that the position of the shoe nose fiber 11 is fixed and does not deviate.

[0026] When in use, first align the T-slot on the back of the base plate 1 with the corresponding protrusion of the test machine clamp, and use the hexagon socket screw to connect and fix the base plate 1 to the test machine clamp; place the synthetic brake shoe 14 on the top of the two support plates 3, and align the shoe nose 16 with the positioning groove 6 on the two support plates 3; insert the shoe nose fiber 11 between the two rows of connecting columns 10, and pass the shoe nose fiber 11 through the shoe nose 16; finally, screw the locking rod 13 on the two support plates 3 to fix the position of the shoe nose fiber 11 to avoid the shoe nose fiber 11 falling off during the experiment, causing the synthetic brake shoe 14 to fall off and other dangerous phenomena. After the shoe nose fiber 11 is fixed, the friction and wear test detection operation can be started.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A synthetic brake shoe friction and wear test shoe, characterized by: It includes a base plate, which is provided with fixing screw holes, and two supporting plates arranged opposite to each other are fixedly installed on the top of the base plate, and the top of the supporting plate is provided with an arc surface matching the steel back of the synthetic brake shoe, and a shoe nose is provided in the middle of the back side of the steel back, and the top of the supporting plate is provided with a positioning groove matching the shoe nose; a plurality of connecting columns are fixedly installed between the two supporting plates, and the connecting columns are arranged in two rows above and below, and each row of the connecting columns is distributed in an arc shape, and a shoe nose fiber is passed through the shoe nose.

2. A synthetic brake shoe friction and wear test shoe as claimed in claim 1, characterized in that: One end of the shoe nose fiber is provided with a bending portion for hooking one of the connecting columns, and a locking rod for preventing the bending portion from being separated from the connecting column is fixedly mounted on the support plate.

3. A synthetic brake shoe friction and wear test shoe as claimed in claim 1, characterized in that: Two grooves are symmetrically arranged at the two ends of the top of the support plate, a positioning block is fixedly installed in the corresponding grooves of the two support plates, and protrusions are arranged at the two ends of the back side of the steel back, and the positioning block is supported on the inner side of the corresponding protrusions.

4. A synthetic brake shoe friction and wear test shoe as claimed in claim 1, characterized in that: The shoe nose fiber is arc-shaped, and the interval between the two rows of connecting columns is consistent with the thickness of the shoe nose fiber.

5. A synthetic brake shoe friction and wear test shoe as claimed in claim 1, characterized in that: An insert block is provided at the bottom of the support plate, and a plug hole for inserting the insert block is provided on the bottom plate.

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