CN212275417U

CN212275417U - Internal shearing clamp for automobile brake lining

Info

Publication number: CN212275417U
Application number: CN202021004699.6U
Authority: CN
Inventors: 李杨; 王振明; 孙建宇; 李娟�
Original assignee: Shandong Institute for Product Quality Inspection
Current assignee: Shandong Institute for Product Quality Inspection
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-01-01
Anticipated expiration: 2030-06-04

Abstract

The utility model provides an automobile brake facing is with interior shear jig mainly relates to shear test anchor clamps field. The inner shearing clamp for the automobile brake lining comprises a shell, wherein a shearing cavity is formed in the shell, an upper pulling head and a lower pulling head which are matched with each other are arranged in the shearing cavity, guide rails are arranged on the upper bottom surface and the lower bottom surface of the shearing cavity, sliding grooves matched with the guide rails are formed in the bottom plate bottom surfaces of the upper pulling head and the lower pulling head, an embedded groove is formed between the upper pulling head and the lower pulling head, an upper clamping rod is arranged on the upper pulling head, and a lower clamping rod is arranged on the lower pulling head. The beneficial effects of the utility model reside in that: utilize the tensile centre gripping of keeping silent of universal tester the utility model discloses, frictional force is little between two chucks and the guide rail, and closely with the guide rail cooperation, the orbit keeps high parallel between two guide rails, and stability is better during the atress.

Description

Internal shearing clamp for automobile brake lining

Technical Field

The utility model relates to a shear test anchor clamps field specifically is an inside shear anchor clamps for automotive brake facing.

Background

GB26739-2011(ISO 6311:1980) specifies test methods for measuring the shear strength in brake lining materials. Wherein testing arrangement comprises tensile testing machine and anchor clamps, and this standard requires that frictional force is as little as possible between two pull heads of shearing anchor clamps, and the clearance does not exceed requirements such as 0.1mm, does not have the shaping product in the existing market, and self-control anchor clamps exist the frictional force greatly mostly, and linearity keeps relatively poor problem between two chucks.

SUMMERY OF THE UTILITY MODEL

For solving prior art's not enough, the utility model provides an automobile brake facing is with interior shear jig, frictional force is little between two chucks of this anchor clamps and the guide rail, and closely with the guide rail cooperation, and the orbit keeps high parallel between two guide rails, and stability is better during the atress.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

the inner shearing clamp for the automobile brake lining comprises a shell, wherein a shearing cavity is formed in the shell, an upper pulling head and a lower pulling head which are matched with each other are arranged in the shearing cavity, guide rails are arranged on the upper bottom surface and the lower bottom surface of the shearing cavity, sliding grooves matched with the guide rails are formed in the bottom plate bottom surfaces of the upper pulling head and the lower pulling head, an embedded groove is formed between the upper pulling head and the lower pulling head, an upper clamping rod is arranged on the upper pulling head, and a lower clamping rod is arranged on the lower pulling head.

The shell is a rectangular shell, and the shearing cavity penetrates through two side faces of the shell.

The upper puller and the lower puller both comprise a bottom plate, a vertical plate and a shearing plate, the vertical plate and the shearing plate are respectively arranged on two sides of the bottom plate, steps are arranged on the inner side of the vertical plate, the shearing plate of the upper puller can be in contact with the steps of the lower puller, and an unclosed area between the upper puller and the lower puller is a caulking groove.

The guide rail is a V-shaped guide rail, and the sliding groove is a V-shaped groove.

The upper clamping rod is pivoted with the upper puller, and the lower clamping rod is pivoted with the lower puller.

Contrast prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up the guide rail on the bottom surface about shearing the chamber, through spout and the guide rail cooperation of seting up on the upper and lower pull head, can guarantee the displacement in opposite directions of upper and lower pull head in shearing the intracavity, and frictional force is littleer. The two guide rails are kept parallel, so that the upper pull head and the lower pull head can move oppositely in a stable matching manner, and a sample in the caulking groove is sheared. The guide rail and the shearing cavity inner wall are integrally formed, so that the device can run more stably when a sample is subjected to a shearing experiment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the upper/lower slider structure of the present invention;

fig. 3 is a schematic view of the matching structure of the lower slider and the housing of the present invention.

Reference numerals shown in the drawings: 1. a housing; 2. a shear chamber; 3. a puller is arranged; 4. a lower slider; 5. an upper clamping rod; 6. a lower clamping rod; 7. a guide rail; 8. a chute; 9. a base plate; 10. a vertical plate; 11. cutting a plate; 12. a step; 13. and (4) caulking grooves.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application. The directional terms designed in the present application are all based on the attached drawing 1.

Example (b):

as shown in fig. 1-3, the utility model relates to an inside shear anchor clamps for automobile brake facing, including casing 1, the casing adopts the rectangle casing, set up in the casing 1 and cut chamber 2, cut chamber 2 and run through the both sides face of casing 1. The shell is made to be elongated "mouth" shaped on the side. The upper surface and the lower surface of the shell 1 are detachably and fixedly connected with the left end surface and the right end surface, so that the subsequent installation of the upper pull head and the lower pull head is convenient. The left end face and the right end face of the shell are baffle plates of the upper puller and the lower puller, and the puller is prevented from exceeding a limiting area of the rectangular shell. An upper pull head 3 and a lower pull head 4 which are matched with each other are arranged in the shearing cavity 2, and as shown in fig. 1, when the shearing cavity is viewed from the side, the upper pull head and the lower pull head are distributed in a centrosymmetric manner. Guide rails 7 are machined on the upper bottom surface and the lower bottom surface of the shearing cavity, and the two guide rails 7 are arranged in parallel. And sliding grooves 8 matched with the guide rails 7 are formed in the bottom surfaces of the bottom plates 9 of the upper pull head 3 and the lower pull head 4. Through the sliding fit of the sliding groove and the guide rail, the opposite movement between the upper pull head and the lower pull head can be realized. An embedded groove 13 is formed between the upper pull head 3 and the lower pull head 4, the embedded groove is formed by combining the upper pull head and half grooves formed in the lower pull head, the embedded groove is a placing position of a sample, and the sample is sheared through the opposite movement of the upper pull head and the lower pull head. The upper puller 3 is pivoted with an upper clamping rod 5, the lower puller 4 is pivoted with a lower clamping rod 6, and the upper clamping rod and the lower clamping rod are respectively used as clamping parts of a tensile machine. This device passes through the sliding fit of guide rail and spout, makes friction between upper and lower pull head and the shearing groove less, and guide rail and spout play the guide effect simultaneously, make upper and lower pull head more stable when the relative motion, and two pull heads are sent out power and are sheared the sample, receive the spacing of guide rail and spout, can not take place the skew, make experimental data more true. The device clamps the upper and lower clamping rods by the jaw of the universal testing machine, can complete the test by utilizing the stretching function of the testing machine, and does not need to be provided with special detection equipment.

The shape and size of last pull head are unanimous with lower pull head in this device, and its concrete structure is as follows: the upper puller 3 and the lower puller 4 respectively comprise a bottom plate 9, a vertical plate 10 and a shearing plate 11, the vertical plate 10 and the shearing plate 11 are respectively vertically arranged on two sides of the bottom plate 9, a step 12 is processed on the inner side of the vertical plate 10, and a groove between the vertical plate and the shearing plate is a half groove forming the caulking groove. The upper puller and the lower puller of the device are both of an integrated structure. The shear plate 11 of the upper slider 3 can contact with the step 12 of the lower slider 4, and the unclosed area between the upper slider 3 and the lower slider 4 is the caulking groove 13. When the steps of the two sliders and the shear plate are matched with each other, the two sliders are combined into a rectangular block.

Specifically, the top of the vertical plate of the upper pull head and the bottom of the vertical plate of the lower pull head are provided with sliding grooves, and the stability of the upper pull head and the lower pull head sliding in the shell is guaranteed through the arrangement of the double-sided sliding grooves.

Preferably, the guide rail 7 is a V-shaped guide rail, and the sliding groove 8 is a V-shaped groove. Through the cooperation of "V" type piece and "V" type groove, can make the atress of pull head more even to play spacing and direction effect better, it is more stable when making last pull head and lower pull head cut the sample.

Preferably, go up all processing the line that increases frictional force on supporting rod and the lower supporting rod to frictional force is bigger when making the supporting rod at tensile machine centre gripping both ends, prevents that the too big supporting rod slippage that leads to of pulling force.

Claims

1. An inside shear clamp for an automobile brake lining, comprising a housing (1), characterized in that: set up in casing (1) and cut chamber (2), set up in cutting chamber (2) and go up pull head (3) and pull head (4) down of mutually supporting, it all sets up guide rail (7) to cut chamber (2) bottom surface from top to bottom, all set up spout (8) with guide rail (7) matched with on bottom plate (9) bottom surface of pull head (4) down to go up pull head (3), set up caulking groove (13) between going up pull head (3) and pull head (4) down, go up pull head (3) and go up supporting rod (5) of setting up, set up supporting rod (6) down on pull head (4) down.

2. The inside shear clip for an automobile brake lining according to claim 1, wherein: the shell (1) is a rectangular shell, and the shearing cavity (2) penetrates through two side faces of the shell (1).

3. An inside shear clip for an automobile brake lining, according to any one of claims 1 to 2, wherein: the upper puller (3) and the lower puller (4) respectively comprise a bottom plate (9), a vertical plate (10) and a shearing plate (11), the vertical plate (10) and the shearing plate (11) are respectively arranged on two sides of the bottom plate (9), a step (12) is arranged on the inner side of the vertical plate (10), the shearing plate (11) of the upper puller (3) can be in contact with the step (12) of the lower puller (4), and an unclosed area between the upper puller (3) and the lower puller (4) is an embedding groove (13).

4. The inside shear clip for an automobile brake lining according to claim 1, wherein: the guide rail (7) is a V-shaped guide rail, and the sliding groove (8) is a V-shaped groove.

5. The inside shear clip for an automobile brake lining according to claim 1, wherein: the upper clamping rod (5) is pivoted with the upper pull head (3), and the lower clamping rod (6) is pivoted with the lower pull head (4).