Brake clamping force detection device and detection method

Abstract

The invention relates to the technical field of brake testing, and discloses a clamping force detection device and method for a brake, the clamping force detection device comprises a false disc installation part and a brake body, and the false disc installation part is provided with a false disc body capable of simulating the real brake disc condition; the false disc sludge simulation mechanism is integrated on the false disc body and is used for smearing mortar on the outer wall of the false disc body and simulating the actual influence of the mortar splashed on the brake disc on the clamping force of the brake body during driving; the plurality of mortar outlet columns are communicated with the mortar box and are used for uniformly smearing mortar on the outer wall of the false tray body; the device has the advantages that the amount of extruded mortar is controlled by the pushing and pressing plates with different lengths, the difference of mortar coating thicknesses in different areas on the false disc body is realized, the test comprehensiveness is further enhanced, the clamping performance of the brake under a clean condition is considered, the performance of the brake under a severe condition is fully considered, and the test accuracy is improved. And powerful support is provided for performance evaluation and improvement of the brake.

Description

Technical Field

[0001] The invention relates to the field of brake testing, and more particularly to a brake clamping force detection device and a detection method. Background Art

[0002] The brake is one of the core components of the braking system and is crucial to the safe operation of the vehicle. Therefore, the brake clamping force test is particularly important. At present, the brake test bench developed domestically is mainly used for routine testing.

[0003] In the current testing device, if the brake disc surface is kept clean, it is impossible to simulate this real usage environment, resulting in a deviation between the test results and the actual usage conditions.

[0004] In actual driving, the surface of the brake disc is often contaminated with mortar, oil, dust and other pollutants. These pollutants not only affect the friction coefficient between the brake disc and the brake, but also may change the surface morphology of the brake disc, thereby affecting the clamping force of the brake. To this end, we propose a brake clamping force detection device and detection method. Summary of the invention

[0005] The present invention provides a brake clamping force detection device and a detection method, which solve the technical problem in the related art that mortar is often adhered to the surface of the brake disc, thus affecting the brake clamping force.

[0006] A first aspect of the present invention provides a brake clamping force detection device, comprising: a dummy disc mounting member and a brake body, wherein the dummy disc mounting member is provided with a dummy disc body that can simulate the condition of a real brake disc;

[0007] The fake disc sludge simulation mechanism is integrated on the fake disc body and is used to apply mortar to the outer wall of the fake disc body to simulate the actual effect of the mortar splashing on the brake disc on the clamping force of the brake body during driving;

[0008] The fake pan sludge simulation mechanism includes: two mortar boxes, a plurality of slurry discharge columns and slurry squeezers. The two mortar boxes are respectively located on both sides of the fake pan body and are used for storing and supplying mortar.

[0009] A plurality of slurry discharge columns are connected to the mortar box and are used to evenly apply the mortar to the outer wall of the false plate;

[0010] The mortar squeezing member includes four push plates with different lengths. The push plates squeeze the mortar in the mortar box so that the mortar extends out through the mortar outlet column and is applied to the false plate. The push plates of different lengths can control the amount of squeezed mortar to achieve different mortar application thicknesses in different areas.

[0011] After the mortar is applied, the specific area of ​​the dummy disc is rotated to a position aligned with the brake body. The brake body is used to apply a clamping force to the specific area of ​​the dummy disc for testing, so as to evaluate the clamping performance of the brake under actual use conditions.

[0012] Furthermore, a positioning piece is fixedly provided on one side of the dummy disc mounting piece, a base is provided between the positioning pieces, the base is movably connected to the positioning piece, a mounting bracket to be tested is fixedly provided on the base, a brake assembly is fixedly provided on the mounting bracket to be tested, and the brake body is fixedly installed in the brake assembly.

[0013] Furthermore, a plurality of weighing sensors are fixedly arranged in the space between the fake disc bodies, the connecting ends of the plurality of weighing sensors are connected with connecting wires, and the connecting wire bundle passes through the center of the fake disc body, and a plurality of partition strips are fixedly arranged on the outer wall of the fake disc body, and the outer wall of the fake disc body is divided into four areas by the plurality of partition strips.

[0014] Furthermore, the fake disc sludge simulation mechanism also includes a chuck box fixedly connected to the fake disc mounting piece, and two mortar boxes are respectively fixed on the inner walls of the chuck box. An extrusion plate is slidably arranged on the side of the two mortar boxes away from the fake disc body, and a sliding groove is provided on the inner wall of the mortar box, and the extrusion plate is slidably connected to the mortar box through the sliding groove.

[0015] Furthermore, a mortar bag is provided on the side of the extrusion plate close to the false disc body, the feed end of the mortar bag is connected to the slurry supply pipe, and a pushing plate is provided on the side of the mortar bag away from the extrusion plate. The pushing plate is slidably connected to the mortar box, and a plurality of reset belts are provided between the pushing plate and the extrusion plate, and the reset belts are distributed around the mortar bag.

[0016] Furthermore, a dish-wiping cloth is fixedly arranged on one side of the two mortar boxes close to the false dish body, and a plurality of column holes are opened on the surface of the dish-wiping cloth. A slurry outlet column is passed through the plurality of column holes, and a column connecting rubber sleeve is connected between the slurry outlet column and the column holes. A slurry-permeable cloth is arranged on one end of the slurry outlet column close to the false dish body.

[0017] Furthermore, several slurry discharge columns are fixedly connected to the extension plate and are interconnected with the mortar bag through a hose. The hose runs through the extension plate, the mortar bag is squeezed, and the mortar in the mortar bag is smeared on the surface of the false plate through the hose and the slurry discharge column and the mortar-permeable cloth.

[0018] Furthermore, an expansion airbag is provided in the gap between the wiping cloth and the extension plate, and an air outlet end of the expansion airbag is provided with an air venting hole with an inverted triangle structure, and an air inlet end of the expansion airbag is connected to an air supply column, and a shifting column is provided on one side of the air supply column, and the shifting column is rotatably connected to the mortar box, and the shifting column also includes a receiving plate and a following plate.

[0019] Furthermore, the pulping part also includes a rotating column, the bottom end of which is fixedly connected to a driving motor, the rotating column is fixedly connected to a pushing plate, and the pushing plate includes pushing plate one, pushing plate two, pushing plate three and pushing plate four, and the lengths of pushing plate one, pushing plate two, pushing plate three and pushing plate four are different.

[0020] A second aspect of the present invention provides a detection method of a brake clamping force detection device, comprising the following steps:

[0021] S1. Install the brake body to be inspected in the brake assembly, connect all necessary lines and pipelines, adjust the position of the dummy disc mounting part through the adjusting part, and control the adjusting part to insert the dummy disc body into the brake body;

[0022] S2. Inject mortar or mud into the mortar bag through the mortar supply pipe. The system controls the drive motor to work, drive the rotating column to rotate, and the extrusion plate applies pressure to the mortar bag, pushing the extension plate to extend the mortar outlet column, so that the mortar is evenly applied to the side wall of the false plate through the mortar-permeable cloth;

[0023] S3, the brake body performs a clamping test on the first area of ​​the dummy disc body coated with mortar, and the weighing sensor detects and records the clamping force data;

[0024] S4, after the brake body detects the first area of ​​the dummy disc body, the dummy disc body is driven to rotate 90° by the driving member in the dummy disc mounting member, and the second area coated with mortar is rotated to the clamping area of ​​the brake body, and the clamping force detection step is repeated;

[0025] S5. Collect and analyze the clamping force test data of each area to evaluate the clamping performance of the brake under actual use conditions.

[0026] The beneficial effects of the present invention are:

[0027] The fake disc sludge simulation mechanism of the present invention can simulate the mortar splashing on the brake disc in a real driving environment, making the test environment closer to reality. By designing push plates with different lengths to control the amount of extruded mortar, the difference in mortar coating thickness in different areas on the fake disc body is achieved, further enhancing the comprehensiveness of the test. This design not only considers the clamping performance of the brake under clean conditions, but also fully considers its performance under harsh conditions, providing strong support for the performance evaluation and improvement of the brake.

[0028] The design of the fake disc sludge simulation mechanism provides a more realistic and complex testing environment for the brake by precisely controlling the amount and distribution of mortar. This environmental simulation not only helps to evaluate the clamping performance of the brake under normal conditions, but also accurately reflects its performance under extreme conditions. By simulating the splash of mortar on the brake disc during actual driving, it is able to detect changes in the clamping force of the brake under different degrees of contamination, providing valuable reference data for the design and optimization of the brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the clamping force detection device of the present invention;

[0030] Figure 2 It is a schematic diagram of the connection structure between the dummy disc body and the chuck box of the clamping force detection device of the present invention;

[0031] Figure 3 It is a right view structural diagram of the false disc body of the clamping force detection device of the present invention;

[0032] Figure 4 It is a schematic diagram of the mortar box structure of the clamping force detection device of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the dish wiping cloth of the clamping force detection device of the present invention;

[0034] Figure 6 It is a schematic diagram of the mortar bag structure of the clamping force detection device of the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the slurry outlet column of the clamping force detection device of the present invention;

[0036] Figure 8 The clamping force detection device of the present invention Figure 7 The enlarged schematic diagram at A in the middle;

[0037] Fig. 9 It is a schematic diagram of the structure of the shifting post of the clamping force detection device of the present invention.

[0038] In the figure: 11, base; 12, mounting bracket to be tested; 13, brake assembly; 14, adjustment member; 15, dummy disc mounting member; 2, dummy disc sludge simulation mechanism; 21, chuck box; 22, slurry supply pipe; 23, mortar box; 24, extrusion plate; 25, slide; 26, wiping cloth; 27, column hole; 28, slurry column; 29, expansion airbag; 201, mortar bag; 202, extension plate; 203, Reset belt; 204, air vent; 205, connecting column rubber sleeve; 206, permeable cloth; 31, fake disc body; 32, weighing sensor; 33, partition strip; 34, connecting line; 41, driving motor; 42, rotating column; 43, pushing plate one; 44, pushing plate two; 45, pushing plate three; 46, pushing plate four; 5, brake body; 61, shifting column; 62, receiving plate; 63, following shifting plate; 64, air supply column. DETAILED DESCRIPTION

[0039] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0040] Embodiment 1

[0041] like Figure 1 , Figure 4 and 5 As shown, a brake clamping force detection device comprises: a dummy disc mounting member 15 and a brake body 5, wherein the dummy disc mounting member 15 is provided with a dummy disc body 31 which can simulate the condition of a real brake disc;

[0042] The fake disc sludge simulation mechanism 2 is integrated on the fake disc body 31 and is used to apply mortar to the outer wall of the fake disc body 31 to simulate the actual effect of the mortar splashing on the brake disc on the clamping force of the brake body 5 during driving;

[0043] The fake disk sludge simulation mechanism 2 includes: two mortar boxes 23, a plurality of slurry discharge columns 28 and a slurry squeezer. The two mortar boxes 23 are respectively located on both sides of the fake disk body 31 and are used to store and supply mortar.

[0044] A plurality of slurry discharge columns 28 are connected to the mortar box 23 and are used to evenly apply the mortar to the outer wall of the false plate 31;

[0045] The mortar squeezing member includes four push plates with different lengths. The push plates squeeze the mortar in the mortar box 23 so that the mortar is extended through the mortar outlet column 28 and applied to the false plate 31. The push plates with different lengths can control the amount of squeezed mortar to achieve different mortar application thicknesses in different areas.

[0046] After the mortar is applied, the specific area of ​​the dummy disc 31 is rotated to a position aligned with the brake body 5, and the brake body 5 is used to apply a clamping force to the specific area of ​​the dummy disc 31 for testing to evaluate the clamping performance of the brake under actual use conditions.

[0047] A positioning member 14 is fixedly provided on one side of the dummy disc mounting member 15 , a base 11 is provided between the positioning members 14 , the base 11 is movably connected to the positioning member 14 , a mounting bracket 12 to be tested is fixedly provided on the base 11 , a brake assembly 13 is fixedly provided on the mounting bracket 12 to be tested, and the brake body 5 is fixedly installed in the brake assembly 13 .

[0048] like Figure 2 and 3 As shown, a plurality of weighing sensors 32 are fixedly arranged in the space between the dummy disc bodies 31, the connecting ends of the plurality of weighing sensors 32 are connected with connecting wires 34, and the connecting wires 34 are bundled and pass through the center of the dummy disc body 31, and a plurality of partition strips 33 are fixedly arranged on the outer wall of the dummy disc body 31, and the outer wall of the dummy disc body 31 is divided into four areas by the plurality of partition strips 33.

[0049] The fake disc sludge simulation mechanism 2 also includes a chuck box 21 fixedly connected to the fake disc mounting part 15, and two mortar boxes 23 are respectively fixed on the inner walls of the chuck box 21. The two mortar boxes 23 are slidably provided with an extrusion plate 24 on the side away from the fake disc body 31. The inner wall of the mortar box 23 is provided with a slide groove 25, and the extrusion plate 24 is slidably connected to the mortar box 23 through the slide groove 25.

[0050] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a mortar bag 201 is provided on the side of the extrusion plate 24 close to the false disc body 31, and the feeding end of the mortar bag 201 is connected to the slurry supply pipe 22. A pushing plate 202 is provided on the side of the mortar bag 201 away from the extrusion plate 24. The pushing plate 202 is slidably connected to the mortar box 23. A plurality of reset belts 203 are provided between the pushing plate 202 and the extrusion plate 24, and the reset belts 203 are distributed around the mortar bag 201.

[0051] A dish-wiping cloth 26 is fixedly provided on one side of the two mortar boxes 23 close to the false dish body 31, and a plurality of column holes 27 are opened on the surface of the dish-wiping cloth 26. A slurry discharge column 28 is passed through the plurality of column holes 27, and a column connecting rubber sleeve 205 is connected between the slurry discharge column 28 and the column holes 27. A slurry-permeable cloth 206 is provided on one end of the slurry discharge column 28 close to the false dish body 31.

[0052] A plurality of slurry discharge columns 28 are fixedly connected to the extension plate 202 and are interconnected with the mortar bag 201 through a hose. The hose runs through the extension plate 202, the mortar bag 201 is squeezed, and the mortar in the mortar bag 201 is smeared on the surface of the false plate 31 through the hose and the slurry discharge column 28 and the mortar-permeable cloth 206.

[0053] The pulping part also includes a rotating column 42, the bottom end of which is fixedly connected to a driving motor 41, the rotating column 42 is fixedly connected to a pushing plate, and the pushing plate includes a pushing plate 1 43, a pushing plate 2 44, a pushing plate 3 45 and a pushing plate 4 46, and the pushing plate 1 43, the pushing plate 2 44, the pushing plate 3 45 and the pushing plate 4 46 have different lengths.

[0054] When testing the clamping force of the brake body 5, first install the brake body 5 to be inspected in the brake assembly 13, and connect various lines and pipelines. Then control the positioning member 14 to drive the dummy disc mounting member 15 to move up, down, forward and backward, so that the dummy disc body 31 is aligned with the clamping disc opening of the brake body 5, and then control the positioning member 14 to drive the dummy disc body 31 to be inserted into the brake body 5;

[0055] A plurality of weighing sensors 32 are arranged in the gaps between the dummy disc bodies 31, and the dummy disc bodies 31 are clamped by the brake body 5. The process principle of the weighing sensors 32 detecting the clamping force is mainly based on the strain effect;

[0056] The weighing sensor 32 can convert the weight of an object or the force it receives into an electrical signal. When the brake body 5 applies a clamping force to the dummy disc body 31, the force is transmitted to the weighing sensor 32. The weighing sensor 32 usually contains an elastic element and a resistance strain gauge. The elastic element will deform when subjected to an external force, and the resistance strain gauge is tightly attached to the elastic element. When the elastic element is deformed, the resistance strain gauge will also be stretched or compressed, causing its resistance value to change.

[0057] This change in resistance value can be converted by a bridge circuit to produce a change in voltage or current. The design of the bridge circuit can cleverly amplify the resistance change of the resistance strain gauge and output it as an easily detectable signal. This conversion process ensures that even small force changes can be accurately captured and converted into quantifiable data.

[0058] Finally, the output electrical signal is filtered, amplified and linearized by the signal conditioning circuit to eliminate noise interference and improve measurement accuracy. The weighing sensor 32 can accurately output the clamping force of the brake body 5 on the dummy disc body 31 in the form of a digital or analog signal, thereby achieving accurate measurement of the clamping force;

[0059] The slurry supply pipe 22 is connected to an external slurry supply device, such as a slurry supply pump, and mortar or mud is injected into the two mortar bags 201 through the slurry supply pipe 22. After that, the first area of ​​the drive motor 41 is clamped and detected through the brake body 5. At the same time, the system controls the drive motor 41 to work, and the drive motor 41 drives the rotating column 42 to rotate, so that the push plate 46 rotates, and at the same time, the extrusion plate 24 is squeezed, and the mortar bag 201 is squeezed through the extrusion plate 24;

[0060] The mortar bag 201 is squeezed and pushes the extension plate 202, which slides in the same direction, driving a plurality of slurry discharge columns 28 to extend out of the column holes 27, so that the slurry-permeable cloth 206 is pressed against the side wall of the false disc 31. At the same time, the mortar or mud in the mortar bag 201 is smeared on the side wall of the false disc 31 along the hose and the slurry discharge column 28. When the push plate 204 passes over the squeeze plate 24, the extension plate 202 is pulled back by the elasticity of the plurality of reset belts 203, so that the slurry discharge column 28 is retracted into the column hole 27. At this time, the smearing of the mortar is completed. When the brake body 5 completes the detection of the first area of ​​the false disc 31, The fake disc body 31 is driven to rotate 90° by the driving member in the fake disc mounting member 15, and the second area of ​​the fake disc body 31 for applying mortar is rotated to the clamping area of ​​the brake body 5, and so on. The length of the push plate 1 43 is greater than that of the push plate 2 44, the length of the push plate 2 44 is greater than that of the push plate 3 45, and the length of the push plate 3 45 is greater than that of the push plate 4 46. After each area is detected, the system can control the push plate 3 45, the push plate 2 44 and the push plate 1 43 to squeeze the extrusion plate 24 in turn. The longer the push plate is, the more mortar is squeezed out.

[0061] Embodiment 2

[0062] like Figure 8 and Fig. 9 As shown, an expansion airbag 29 is also provided in the gap between the wiping cloth 26 and the extension plate 202, and an air outlet end of the expansion airbag 29 is provided with an air venting hole 204 of an inverted triangle structure, and an air inlet end of the expansion airbag 29 is connected to an air supply column 64, and a shifting column 61 is provided on one side of the air supply column 64, and the shifting column 61 is rotatably connected to the mortar box 23, and the shifting column 61 also includes a receiving plate 62 and a following shifting plate 63.

[0063] When this round of detection is completed, it is only necessary to control the false disk body 31 to rotate rapidly. Through the rapid rotation of the false disk body 31, the time interval of the partition strip 33 pushing the receiving plate 62 is reduced, and the fluctuation of the receiving plate 62 drives the following plate 63 to squeeze the air supply column 64 once. Each time the air supply column 64 is squeezed, the air in the air supply column 64 flows into the expansion airbag 29 through the pipeline. The air leakage hole 204 is an inverted triangle, and the air leakage is smaller than the air intake. Therefore, once the false disk body 31 rotates rapidly, the air in the expansion airbag 29 will gradually increase, causing the expansion airbag 29 to expand. At this time, the dish cloth 26 can be tightly attached to the side wall of the false disk body 31, and the mortar can be cleaned as the false disk body 31 rotates. If the false disk body 31 rotates slowly, the expansion airbag 29 will have more air leakage than air intake, and no expansion will occur.

[0064] Embodiment 3

[0065] The present invention provides a detection method of a brake clamping force detection device, comprising the following steps:

[0066] S1. Install the brake body 5 to be inspected in the brake assembly 13, and connect all necessary lines and pipelines. Adjust the position of the dummy disc mounting member 15 through the positioning member 14, so that the dummy disc body 31 is aligned with the clamping disc opening of the brake body 5, and control the positioning member 14 to insert the dummy disc body 31 into the brake body 5;

[0067] S2, injecting mortar or mud into the mortar bag 201 through the mortar supply pipe 22, the system controls the driving motor 41 to work, driving the rotating column 42 to rotate, so that the pushing plates of different lengths squeeze the squeezing plate 24 in turn, and the squeezing plate 24 applies pressure to the mortar bag 201, pushing the extension plate 202 to extend the slurry outlet column 28, so that the mortar is evenly applied on the side wall of the false plate body 31 through the slurry-permeable cloth 206;

[0068] S3, the brake body 5 performs clamping detection on the first area of ​​the false disc body 31 coated with mortar, the weighing sensor 32 detects and records the clamping force data, and the electrical signal is filtered, amplified and linearized through the signal conditioning circuit to improve the measurement accuracy;

[0069] S4, after the brake body 5 completes the inspection of the first area of ​​the dummy disc body 31, the driving member in the dummy disc mounting member 15 drives the dummy disc body 31 to rotate 90°, and the second area coated with mortar is rotated to the clamping area of ​​the brake body 5, and the clamping force inspection step is repeated to inspect each area of ​​the dummy disc body 31 one by one;

[0070] S5. Collect and analyze the clamping force test data of each area, evaluate the clamping performance of the brake under actual use conditions, and adjust or optimize the brake based on the test results to improve its performance and reliability.

[0071] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A brake clamping force detection device, characterized in that: include: A dummy disc mounting member (15) and a brake body (5), wherein the dummy disc mounting member (15) is provided with a dummy disc body (31) capable of simulating the condition of a real brake disc; A fake disc sludge simulation mechanism (2) is integrated on the fake disc body (31) and is used to apply mortar to the outer wall of the fake disc body (31) to simulate the actual effect of mortar splashing from the brake disc on the clamping force of the brake body (5) during driving; The fake disk sludge simulation mechanism (2) comprises: two mortar boxes (23), a plurality of slurry discharge columns (28) and a slurry squeezer, wherein the two mortar boxes (23) are respectively located on both sides of the fake disk body (31) and are used for storing and supplying mortar; A plurality of slurry discharge columns (28) are connected to the mortar box (23) and are used to evenly apply mortar to the outer wall of the false plate (31); The mortar squeezing member comprises four push plates of different lengths, wherein the push plates squeeze the mortar in the mortar box (23) so that the mortar is extended through the mortar outlet column (28) and smeared on the false plate (31). The push plates of different lengths can control the amount of mortar squeezed out, thereby achieving different mortar smearing thicknesses in different areas; After the mortar is applied, the specific area of ​​the dummy disc (31) is rotated to a position aligned with the brake body (5), and the brake body (5) applies a clamping force to the specific area of ​​the dummy disc (31) for testing, thereby evaluating the clamping performance of the brake under actual use conditions.

2. A brake clamping force detection device according to claim 1, characterized in that: A positioning member (14) is fixedly arranged on one side of the dummy disc mounting member (15), a base (11) is arranged between the positioning members (14), the base (11) is movably connected to the positioning member (14), a mounting bracket (12) to be tested is fixedly arranged on the base (11), a brake assembly (13) is fixedly arranged on the mounting bracket (12) to be tested, and the brake body (5) is fixedly installed in the brake assembly (13).

3. A brake clamping force detection device according to claim 1, characterized in that: A plurality of weighing sensors (32) are fixedly arranged in the space between the dummy disc bodies (31); the connection ends of the plurality of weighing sensors (32) are connected with connecting wires (34), and the connecting wires (34) are bundled and pass through the center of the dummy disc body (31); a plurality of partition strips (33) are fixedly arranged on the outer wall of the dummy disc body (31); and the outer wall of the dummy disc body (31) is divided into four areas by the plurality of partition strips (33).

4. A brake clamping force detection device according to claim 1, characterized in that: The dummy disc sludge simulation mechanism (2) further comprises a chuck box (21) fixedly connected to the dummy disc mounting member (15); the two mortar boxes (23) are respectively fixed to the inner wall of the chuck box (21); a squeezing plate (24) is slidably arranged on one side of the inside of the two mortar boxes (23) away from the dummy disc body (31); a sliding groove (25) is provided on the inner wall of the mortar box (23); and the squeezing plate (24) is slidably connected to the mortar box (23) via the sliding groove (25).

5. A brake clamping force detection device according to claim 4, characterized in that: A mortar bag (201) is arranged on the side of the extrusion plate (24) close to the false disc body (31); a feed end of the mortar bag (201) is connected to a slurry supply pipe (22); a push plate (202) is arranged on the side of the mortar bag (201) away from the extrusion plate (24); the push plate (202) is slidably connected to the mortar box (23); a plurality of reset belts (203) are arranged between the push plate (202) and the extrusion plate (24), and the reset belts (203) are distributed around the mortar bag (201).

6. A brake clamping force detection device according to claim 5, characterized in that: A dish wiping cloth (26) is fixedly arranged on one side of the two mortar boxes (23) close to the false dish body (31), and a plurality of column holes (27) are opened on the surface of the dish wiping cloth (26), and a slurry discharge column (28) is penetrated in each of the plurality of column holes (27), and a column connecting rubber sleeve (205) is connected between the slurry discharge column (28) and the column holes (27), and a slurry permeable cloth (206) is arranged on one end of the slurry discharge column (28) close to the false dish body (31).

7. A brake clamping force detection device according to claim 6, characterized in that: A plurality of the slurry discharge columns (28) are fixedly connected to the extension plate (202) and are interconnected with the mortar bag (201) through a hose. The hose runs through the extension plate (202). The mortar bag (201) is squeezed, and the mortar in the mortar bag (201) is smeared on the surface of the false plate (31) through the hose and the slurry discharge columns (28) and the mortar-permeable cloth (206).

8. A brake clamping force detection device according to claim 7, characterized in that: An expansion air bag (29) is also provided in the gap between the wiping cloth (26) and the extension plate (202); an air outlet end of the expansion air bag (29) is provided with an air release hole (204) of an inverted triangle structure; an air inlet end of the expansion air bag (29) is connected to an air supply column (64); a shifting column (61) is provided on one side of the air supply column (64); the shifting column (61) is rotatably connected to the mortar box (23); and the shifting column (61) further comprises a shifting plate (62) and a shifting plate (63).

9. The brake clamping force detection device according to claim 1, characterized in that: The slurry squeezing member also includes a rotating column (42), the bottom end of which is fixedly connected to a driving motor (41), the rotating column (42) is fixedly connected to a pushing plate, and the pushing plate includes a pushing plate one (43), a pushing plate two (44), a pushing plate three (45) and a pushing plate four (46), and the pushing plate one (43), the pushing plate two (44), the pushing plate three (45) and the pushing plate four (46) have different lengths.

10. A detection method using the brake clamping force detection device according to claims 1 to 9, characterized in that: The following steps are involved: S1. Install the brake body (5) to be inspected in the brake assembly (13), connect all necessary lines and pipelines, adjust the position of the dummy disc mounting member (15) by the positioning member (14), and control the positioning member (14) to insert the dummy disc body (31) into the brake body (5); S2, injecting mortar or mud into the mortar bag (201) through the mortar supply pipe (22), the system controls the driving motor (41) to work, driving the rotating column (42) to rotate, the squeezing plate (24) applies pressure to the mortar bag (201), pushing the extension plate (202) to extend the mortar outlet column (28), so that the mortar is evenly spread on the side wall of the false plate (31) through the mortar-permeable cloth (206); S3, the brake body (5) performs clamping detection on the first area of ​​the dummy disc body (31) coated with mortar, and the weighing sensor (32) detects and records the clamping force data; S4, after the brake body (5) completes the detection of the first area of ​​the dummy disc body (31), the dummy disc body (31) is driven by the driving member in the dummy disc mounting member (15) to rotate 90 degrees, and the second area coated with mortar is rotated to the clamping area of ​​the brake body (5), and the clamping force detection step is repeated; S5. Collect and analyze the clamping force test data of each area to evaluate the clamping performance of the brake under actual use conditions.

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