CN115452614B

CN115452614B - Brake block shearing equipment

Info

Publication number: CN115452614B
Application number: CN202211411998.5A
Authority: CN
Inventors: 颜克旭; 田雨; 李传玉
Original assignee: Shandong Daqian Brake System Co ltd
Current assignee: Shandong Daqian Brake System Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-01-13
Anticipated expiration: 2042-11-11
Also published as: CN115452614A

Abstract

The invention belongs to the technical field of brake pad shearing, and particularly relates to brake pad shearing equipment; the method comprises the following steps: the testing machine comprises a testing machine body, wherein a servo motor is fixedly connected to the side surface of an auxiliary table on the right side of the testing machine body; a screw rod is fixedly connected to a servo motor shaft through a coupler; the guide rods are provided with driving blocks in a sliding mode; the L plates are fixedly connected with a mounting plate; the upper surface of the mounting plate is fixedly connected with an air cylinder through bolts; the extension shaft of the cylinder extends to the lower part of the mounting plate; the lower surface of the cylinder extension shaft is fixedly connected with a shearing block; a display screen is arranged on the left side of the test bed; the invention is mainly used for solving the problem that when the damaged part or the crack part in the brake pad is stressed due to overlarge pressure applied to the brake pad in the process of shearing and pressurizing the brake pad, the brake pad is broken and broken, so that broken fragments are splashed, and the damage to a test worker is easily caused.

Description

Brake block shearing equipment

Technical Field

The invention belongs to the technical field of brake pad shearing, and particularly relates to brake pad shearing equipment.

Background

The brake pad is a safety part for braking, is mainly applied to various vehicles and mainly plays a role of braking when in use, however, the brake pad is generally composed of a steel plate, a bonding heat insulation layer and a friction block, wherein the heat insulation layer is composed of a non-heat-transfer material and aims at heat insulation, the friction block is composed of a friction material and an adhesive, and the friction block is extruded on a brake disc or a brake drum to generate friction when in braking, so that the aim of decelerating and braking the vehicle is fulfilled;

however, after the brake pad is manufactured, a brake pad shear strength test needs to be performed to verify whether the brake pad meets the national safety standard, and special test equipment is provided during the brake pad shear strength test;

the brake pad shearing tester is a new-generation microcomputer-controlled pressure shearing tester designed for special mechanisms of road vehicles, brake linings and the like, advanced technologies are used for designing a main machine and an auxiliary tool of the tester, the tester is attractive in appearance, convenient to operate, stable and reliable in performance, free of pollution, low in noise and high in efficiency, and all test operations can be automatically completed on a computer through a mouse.

The brake pad shearing test machine comprises a horizontal brake pad shearing test machine, the machine adopts a full-digital servo speed regulating system with high speed regulating precision and stable performance and a servo motor as a driving system, a controller is used as a core of a control system, WINDOWS is used as control and data processing software of an operation interface, the screen display of test force, a test force peak value, beam displacement, test deformation and a test curve is realized, and all test operations can be automatically completed on a computer through a mouse;

however, when carrying out shear test to the brake block, need apply certain pressure to the brake block and detect, at the in-process of exerting pressure to the brake block, most brake blocks are direct will place on the workstation, do not carry on spacing fixedly to brake block side and upper surface, thereby directly carry out shear test, if the brake block when the preparation inside has the damage or when the crackle appears, simultaneously because do not carry out comparatively comprehensive spacing fixedly to the brake block again, the in-process brake block of exerting pressure is owing to the pressure that receives is too big, when damage or crackle department in the brake block received pressure, the broken circumstances of fracture may take place, make broken piece take place to splash, cause the damage easily to the staff of experiment.

In view of the above, in order to reduce the damage caused by the defects, the invention designs and develops the brake pad shearing device.

Disclosure of Invention

In order to make up for the deficiencies of the prior art, the present invention provides a brake pad shearing apparatus comprising: the testing machine comprises a testing machine body, wherein auxiliary tables are fixedly connected to two sides of the upper surface of the testing machine body; the auxiliary tables correspond to each other; two guide rods are fixedly connected between the auxiliary tables; the side surface of the auxiliary table on the right side of the testing machine body is fixedly connected with a servo motor; a screw rod is fixedly connected to a servo motor shaft through a coupler; the guide rods are jointly provided with a driving block in a sliding manner, and the driving block is in screw transmission with the lead screw; a test area gap is formed in one side of the driving block; the positions of two sides of the notch of the test area are fixedly connected with an L plate on the upper surface of the driving block through bolts; the L plates are fixedly connected with a mounting plate; the upper surface of the mounting plate is fixedly connected with a cylinder through a bolt; the extension shaft of the cylinder extends to the lower part of the mounting plate and is connected with the mounting plate in a sliding manner; the outer surface of an extension shaft extending to the lower part of the mounting plate by the cylinder is fixedly connected with n plates; the lower surface of the cylinder extension shaft is fixedly connected with a shear block; the left side of the driving block is positioned on the upper surface of the testing machine body and is fixedly connected with a test bed; the test bed is in a convex design, and a cavity is formed in the test bed; a display screen is arranged on the left side of the test bed;

also comprises a fixed protection mechanism; the fixed protection mechanism is arranged on one side of the test bed and is used for fixing and protecting the brake pad during testing;

the fixed protection mechanism comprises an extrusion plate; the extrusion plates are fixedly connected to the surfaces of the n plates on the two sides of the shear block; the length of the extrusion plate is greater than that of the n plates, and the extrusion plate extends towards one side of the display screen; a circular groove is formed in the inner wall of the extrusion plate, and the circular groove part is communicated with the outside; first limiting grooves are formed in the upper surface of the test bed and in positions on one side, corresponding to the two extrusion plates, of the upper surface of the test bed; the first limiting groove penetrates through the test bed; a limiting plate is connected in the first limiting groove in a sliding manner; the top of the limiting plate is in a cylindrical design; the limiting plate is in sliding connection with the circular groove on the n plate through a cylinder designed at the top; the area on the test bed on the opposite side of the two limiting plates is an area for placing a brake pad; a stop block is fixedly connected to the left side of the limiting plate on the test bed; a moving groove is formed in the inner wall of the stop block; the moving groove corresponds to the extrusion plate;

the surfaces of one sides of the limiting plates, which correspond to each other, are provided with sliding chutes which are uniformly distributed; a limiting block is connected in the sliding groove in a sliding manner through a spring;

the number of the limiting blocks is more than one; the limiting blocks slide in the sliding grooves, and the adjacent limiting blocks are connected through springs;

the lower surface of the limiting block is fixedly connected with a rubber layer.

Preferably, second limiting grooves which are uniformly distributed are formed in the inner wall of the test bed between the two first limiting grooves; the inner wall of the stop block is also provided with uniformly distributed moving grooves which correspond to the first limiting groove and the second limiting groove;

the n plates comprise a first right-angle plate and a second right-angle plate; u-shaped grooves are formed in the sides, close to the mounting plate, of the first right-angle plate and the second right-angle plate; through holes are uniformly distributed on two sides of the U groove; a bolt and a nut in threaded connection with the bolt are arranged in the through hole;

the cylinder extension shaft is connected with two fixing rings through threads; the fixing rings are respectively arranged on the upper side and the lower side of the n plate.

Preferably, a V-shaped block is arranged in the inner wall of the driving block at the position of the notch of the test area; the V-shaped block is made of elastic rubber material;

one side of the V-shaped block close to the notch of the test area is fixedly connected with a support rod; the supporting rod is connected with the inner wall of the driving block in a sliding mode through a spring.

The invention has the following beneficial effects:

1. according to the brake pad shearing equipment disclosed by the invention, in the process of shearing test of the brake pad, the limiting plates are utilized to block the two sides of the brake pad, and meanwhile, the brake pad can be limited, so that the test precision of the brake pad is prevented from being influenced due to inaccurate placement position of the brake pad; therefore, the brake pad side edge and the upper surface can be prevented from being limited and fixed in the prior art, when damage or cracks exist in the brake pad, the brake pad is broken and broken in the shearing test process, the broken fragments can splash to a tester to cause damage to the tester, and the broken fragments can splash to a limiting plate and a stop block through the fixed protection mechanism.

2. According to the brake pad shearing equipment, the distance between the first right-angle plate and the second right-angle plate is adjusted, so that brake pads of different types can be sheared, the brake pads of different types can be limited and fixed when the brake pads of different types are sheared, the brake pads can be shielded, and the brake pads are prevented from being broken and splashed in the shearing process to damage testers.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a perspective view of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 isbase:Sub>A cross-sectional view taken at A-A of FIG. 4 in accordance with the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 3 at B in accordance with the present invention;

FIG. 7 is an enlarged view of a portion of the invention at C of FIG. 5;

FIG. 8 is a top view of the drive block of the present invention;

in the figure: 1. a testing machine body; 11. an auxiliary table; 12. a guide bar; 13. a servo motor; 14. a lead screw; 15. a drive block; 151. a test area gap; 16. an L-shaped plate; 17. mounting a plate; 18. a cylinder; 19. a display screen; 2. n plates; 21. cutting the block; 22. a compression plate; 23. a circular groove; 24. a first right-angle plate; 25. a second rectangular plate; 26. a U-shaped groove; 27. a through hole; 28. a fixing ring; 29. v-shaped blocks; 291. a support bar; 3. a test stand; 31. a first limit groove; 32. a limiting plate; 33. a stopper; 34. a moving groove; 35. a chute; 36. a limiting block; 37. a second limit groove.

Detailed Description

As shown in fig. 1 to 8, the brake pad shearing apparatus according to the present invention,

the specific work flow comprises the following steps: the testing machine comprises a testing machine body 1, wherein auxiliary tables 11 are fixedly connected to two sides of the upper surface of the testing machine body 1; the auxiliary tables 11 correspond to each other; two guide rods 12 are fixedly connected between the auxiliary tables 11; a servo motor 13 is fixedly connected to the side face of the auxiliary table 11 on the right side of the testing machine body 1; a screw rod 14 is fixedly connected to the shaft of the servo motor 13 through a coupler; a driving block 15 is arranged on the guide rods 12 in a sliding mode, and the driving block 15 and the lead screw 14 are in screw transmission; a test area gap 151 is formed in one side of the driving block 15; the positions of two sides of the test area gap 151, which are positioned on the upper surface of the driving block 15, are fixedly connected with L plates 16 through bolts; the L plates 16 are fixedly connected with a mounting plate 17; the upper surface of the mounting plate 17 is fixedly connected with a cylinder 18 through a bolt; the extension shaft of the cylinder 18 extends to the lower part of the mounting plate 17 and is connected with the mounting plate 17 in a sliding way; the outer surface of an extension shaft extending below the mounting plate 17 from the cylinder 18 is fixedly connected with an n plate 2; the lower surface of the extending shaft of the cylinder 18 is fixedly connected with a shear block 21; the left side of the driving block 15 is positioned on the upper surface of the testing machine body 1 and fixedly connected with a test bed 3; the test bed 3 is in a convex design, and a cavity is formed in the test bed 3; a display screen 19 is arranged on the left side of the test bed 3;

also comprises a fixed protection mechanism; the fixed protection mechanism is arranged on one side of the test bed 3 and is used for fixing and protecting the brake pad during testing;

the fixed guard mechanism comprises a stripper plate 22; the extrusion plates 22 are fixedly connected to the surfaces of the n plates 2 on the two sides of the shear block 21; the length of the extrusion plate 22 is greater than that of the n plate 2, and the extrusion plate extends towards one side of the display screen 19; a circular groove 23 is formed in the inner wall of the extrusion plate 22, and the circular groove 23 is partially communicated with the outside; a first limiting groove 31 is formed in the upper surface of the test bed 3 and at one side corresponding to the two extrusion plates 22; the first limiting groove 31 penetrates through the test bed 3; a limit plate 32 is connected in the first limit groove 31 in a sliding manner; the top of the limiting plate 32 is designed to be cylindrical; the limiting plate 32 is in sliding connection with the circular groove 23 on the n plate 2 through a cylindrical shape designed at the top; the area on the test bed 3 at the opposite side of the two limit plates 32 is an area for placing a brake pad; a stop block 33 is fixedly connected to the left side of the limiting plate 32 on the test bed 3; a moving groove 34 is formed in the inner wall of the stop block 33; the moving groove 34 and the extrusion plate 22 correspond to each other;

the surfaces of one sides of the limiting plates 32 corresponding to each other are provided with sliding grooves 35 which are uniformly distributed; a limiting block 36 is connected in the sliding groove 35 in a sliding manner through a spring;

the number of the limiting blocks 36 is more than one; the limiting blocks 36 slide in the sliding grooves 35, and the adjacent limiting blocks 36 are connected through springs;

the lower surfaces of the limiting blocks 36 are fixedly connected with rubber layers;

when the brake pad is subjected to a shear test, firstly, the testing machine body 1 is electrified, then a tester places the brake pad in an area on the test bed 3 on one side opposite to the two limiting plates 32, and manually pulls the lowest limiting block 36 upwards, so that the lowest limiting block 36 is placed on the upper surface of the brake pad, and the brake pad is preliminarily fixed;

then, the tester starts the tester body 1, then the control system in the tester body 1 controls the servo motor 13 to drive the lead screw 14 to rotate, as the lead screw 14 and the driving block 15 are in screw transmission, thereby driving the driving block 15 to move towards the side where the brake pad is placed, the driving block 15 drives the cylinder 18, the n plate 2 and the two extrusion plates 22 to move towards the brake pad during moving, meanwhile, as the extrusion plates 22 are in sliding connection with the cylindrical shape on the limiting plate 32 through the circular groove 23, during moving of the limiting block 36, the extrusion plates 22 slide on the cylindrical shape on the limiting plate 32, finally, the extrusion plates 22 extend into the moving grooves 34 formed in the limiting block 33, meanwhile, as the limiting plate 32 is limited by the first limiting groove 31, thereby not following the distance that the extrusion plates 22 slide too far, only the limiting plate 32 slides in the first limiting groove 31, when the shear block 21 moves to the upper side of the brake pad, at this time, the control system in the tester body 1 controls the servo motor 13 to stop moving, meanwhile, the mounting plate 17 and the limiting block 33 are close to each other but not close to each other, then, the control system 18 in the cylinder 1, when the shear block 21 moves to the upper surface of the limiting plate 32 and the limiting plate 32 moves downwards, thereby, and the limiting plate 32 will drive the first limiting plate 32 to move downwards in the process, and the process, thereby, the limiting plate 32 will drive the first limiting groove 32 to move downwards, the spring connected with the limiting block 36 in the compression chute 35 can increase the fixing force of the limiting block 36 on the brake pad in the process, and meanwhile, when the downward movement distance of the limiting plate 32 is longer, the fixing force of the limiting block 36 on the brake pad is larger;

meanwhile, as the plurality of limiting blocks 36 in the sliding groove 35 are connected through the spring, when the downward movement distance of the limiting plate 32 is gradually increased, the adjacent limiting blocks 36 in the sliding groove 35 are gradually close to each other at the moment, so that the clamping and fixing degree of the brake pad is further increased, meanwhile, the shearing block 21 is gradually close to the brake pad, and the shearing test is performed on the brake pad, in the process of performing the shearing test on the brake pad, the limiting plates 32 are utilized to block two sides of the brake pad, the brake pad can be limited at the same time, the test precision of the brake pad is prevented from being influenced due to inaccurate placement position of the brake pad, meanwhile, the limiting blocks 36 on the limiting plates 32 can fix the brake pad and gradually increase the fixing force on the brake pad;

therefore, the brake pad can be prevented from being limited and fixed on the side edge and the upper surface of the brake pad in the prior art, when damage or cracks exist in the brake pad, and the brake pad is broken and broken in the shearing test process, broken fragments can splash onto a tester to cause damage to the tester, the broken and splashed fragments of the brake pad can splash onto the limiting plate 32 and the stop block 33 by arranging the fixed protection mechanism, the fragments are prevented from splashing outside to cause damage to the tester, and meanwhile, the rubber layer is fixedly connected to one side surface of the limiting block 36, which is in contact with the brake pad, so that the brake pad can be prevented from being damaged by the fact that the limiting block 36 is directly in contact with the brake pad.

Specifically implementing the working process, wherein second limiting grooves 37 which are uniformly distributed are formed in the inner wall of the test bed 3 between the two first limiting grooves 31; the inner wall of the stop block 33 is also provided with moving grooves 34 which are uniformly arranged, and the moving grooves 34 correspond to the first limiting groove 31 and the second limiting groove 37;

the n-plate 2 comprises a first right-angle plate 24 and a second right-angle plate 25; u-shaped grooves 26 are formed in the sides, close to the mounting plate 17, of the first right-angle plate 24 and the second right-angle plate 25; through holes 27 are uniformly arranged on both sides of the U-shaped groove 26; a bolt and a nut in threaded connection with the bolt are arranged in the through hole 27;

two fixing rings 28 are connected to the extending shaft of the cylinder 18 through threads; the fixing rings 28 are respectively arranged at the upper side and the lower side of the n plate 2;

when the brake pad shearing test device works, when the brake pads of different models need to be sheared, firstly, the fixing ring 28 on the extending shaft of the air cylinder 18 is loosened, the fixing ring 28 has a certain distance from the first right-angle plate 24 and the second right-angle plate 25, then nuts fixed on the bolts in the through holes 27 in the first right-angle plate 24 and the second right-angle plate 25 are loosened by using a wrench, then the bolts in the through holes 27 are taken out, the distance between the first right-angle plate 24 and the second right-angle plate 25 is adjusted through the U-shaped groove 26 according to the model of the brake pad needing to be sheared, after the adjustment of the distance between the first right-angle plate 24 and the second right-angle plate 25 is completed, the first right-angle plate 24 and the second right-angle plate 25 are moved upwards on the extending shaft of the air cylinder 18, then the limiting plate 32 is inserted into the corresponding second limiting groove 37, then the first right-angle plate 24 and the second right-angle plate 25 are adjusted to proper heights, the bolts are inserted into the through holes 27 for use, then the wrench is used for tightening the nuts and the fixing ring 28, the brake pads can be sheared for testing, and the brake pads of different models can be sheared simultaneously, and the brake pads can be prevented from being broken by adjusting the brake pad shearing distance between the brake pads of different models by a person in the brake pad shearing test device.

The working process is implemented specifically, a V-shaped block 29 is arranged in the inner wall of the driving block 15 at the position of the test area gap 151; the V-shaped block 29 is made of elastic rubber material;

a support rod 291 is fixedly connected to one side of the V-shaped block 29 close to the notch 151 of the test area; the supporting rod 291 is connected with the inner wall of the driving block 15 in a sliding manner through a spring;

the during operation, because test zone breach 151 position department is equipped with V-arrangement piece 29, when the drive block 15 is close to the brake block gradually, V-arrangement piece 29 is close to the brake block gradually and extrudees fixedly to the brake block, simultaneously because V-arrangement piece 29 is the obtuse angle design, when V-arrangement piece 29 is at the in-process of contact brake block, can utilize the obtuse angle limit to extrude the brake block earlier, thereby can extrude the brake block to the dog 33 side with the brake, cooperate limiting plate 32 and stopper 36 to fix the brake block simultaneously, thereby can further improve the spacing fixed effect to the brake block, simultaneously when V-arrangement piece 29 pushes away the brake block to when contacting with dog 33, V-arrangement piece 29 can extrude bracing piece 291, make bracing piece 291 slide to drive block 15, when drive block 15 is close to the brake block gradually, bracing piece 291 extrudees the spring gradually, can increase the extrusion degree to the brake block gradually at this in-process, thereby further improve spacing and fixed to the brake block.

The foregoing embodiments have shown and described the principles, major features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Brake pad shearing apparatus comprising: the testing machine comprises a testing machine body (1), wherein auxiliary tables (11) are fixedly connected to two sides of the upper surface of the testing machine body (1); the auxiliary tables (11) correspond to each other; two guide rods (12) are fixedly connected between the auxiliary tables (11); a servo motor (13) is fixedly connected to the side surface of the auxiliary table (11) on the right side of the testing machine body (1); a screw rod (14) is fixedly connected to a shaft of the servo motor (13) through a coupler; the guide rods (12) are jointly slid by a driving block (15), and the driving block (15) and the lead screw (14) are in screw transmission; a test area gap (151) is formed in one side of the driving block (15); the positions of two sides of the test area gap (151) are fixedly connected with an L plate (16) through bolts on the upper surface of the driving block (15); the L plates (16) are fixedly connected with a mounting plate (17) together; the upper surface of the mounting plate (17) is fixedly connected with a cylinder (18) through a bolt; the extension shaft of the cylinder (18) extends to the lower part of the mounting plate (17) and is connected with the mounting plate (17) in a sliding way; the outer surface of an extension shaft extending below the mounting plate (17) of the cylinder (18) is fixedly connected with an n plate (2); the lower surface of the extending shaft of the cylinder (18) is fixedly connected with a shear block (21); the left side of the driving block (15) is positioned on the upper surface of the testing machine body (1) and is fixedly connected with a test bed (3); the test bed (3) is in a convex design, and a cavity is formed in the test bed (3); a display screen (19) is arranged on the left side of the test bed (3);

it is characterized by also comprising a fixed protection mechanism; the fixed protection mechanism is arranged on one side of the test bed (3) and is used for fixing and protecting the brake pad during testing;

the fixed guard mechanism includes a squeeze plate (22); the extrusion plates (22) are fixedly connected to the surfaces of the n plates (2) on the two sides of the shear block (21); the length of the extrusion plate (22) is greater than that of the n plate (2), and the extrusion plate extends towards one side of the display screen (19); a circular groove (23) is formed in the inner wall of the extrusion plate (22), and the circular groove (23) is partially communicated with the outside; the n-shaped plate (2) comprises a first right-angle plate (24) and a second right-angle plate (25), and the first right-angle plate (24) and the second right-angle plate (25) are combined to form the n-shaped plate (2);

a first limiting groove (31) is formed in the upper surface of the test bed (3) and in one side position corresponding to the two extrusion plates (22); the first limiting groove (31) penetrates through the test bed (3) and is designed; a limiting plate (32) is connected in the first limiting groove (31) in a sliding manner; the top of the limiting plate (32) is designed to be cylindrical; the limiting plate (32) is in sliding connection with the circular groove (23) on the n plate (2) through a cylindrical shape designed at the top; a stop block (33) is fixedly connected to the left side of the limiting plate (32) on the test bed (3); a moving groove (34) is formed in the inner wall of the stop block (33); the moving groove (34) and the pressing plate (22) correspond to each other.

2. The brake pad shearing apparatus as recited in claim 1, wherein: the surfaces of one sides, corresponding to each other, of the limiting plates (32) are provided with sliding chutes (35) which are uniformly distributed; a limiting block (36) is connected in the sliding groove (35) in a sliding mode through a spring.

3. The brake pad shearing apparatus as claimed in claim 2, wherein: the number of the limiting blocks (36) is more than one; the limiting blocks (36) all slide in the sliding grooves (35), and meanwhile the adjacent limiting blocks (36) are connected through springs.

4. The brake pad shearing apparatus as recited in claim 3, wherein: the lower surfaces of the limiting blocks (36) are fixedly connected with rubber layers.

5. The brake pad shearing apparatus as recited in claim 1, wherein: second limit grooves (37) which are uniformly distributed are formed in the inner wall of the test bed (3) between the two first limit grooves (31); the inner wall of the stop block (33) is also provided with moving grooves (34) which are uniformly distributed, and the moving grooves (34) correspond to the first limiting groove (31) and the second limiting groove (37) mutually.

6. The brake pad shearing apparatus as claimed in claim 1, wherein: u-shaped grooves (26) are formed in the sides, close to the mounting plate (17), of the first right-angle plate (24) and the second right-angle plate (25); through holes (27) are uniformly distributed on both sides of the U-shaped groove (26); and a bolt and a nut in threaded connection with the bolt are arranged in the through hole (27).

7. The brake pad shearing apparatus as claimed in claim 1, wherein: the extending shaft of the air cylinder (18) is connected with two fixing rings (28) through threads; the fixing rings (28) are respectively arranged at the upper side and the lower side of the n plate (2).

8. The brake pad shearing apparatus as claimed in claim 1, wherein: a V-shaped block (29) is arranged in the inner wall of the driving block (15) at the position of the test area notch (151); the V-shaped block (29) is made of elastic rubber material.

9. The brake pad shearing apparatus as recited in claim 8, wherein: one side of the V-shaped block (29) close to the notch (151) of the test area is fixedly connected with a support rod (291); the supporting rod (291) is connected with the inner wall of the driving block (15) in a sliding mode through a spring.