Device for detecting braking performance of brake

Abstract

The invention belongs to the technical field of brake detection, and particularly relates to a brake braking performance detection device which comprises a frame, a loading module arranged in the frame and a servo motor. The servo motor is fixedly connected into the frame, and an output shaft of the servo motor is used for being fixedly connected with a brake drum. The loading module comprises a loading unit, a triggering unit and a chassis; the trigger unit is fixedly connected to the frame and penetrates through the chassis; a plurality of brake shoes are installed in different loading units by an operator, and different loading units are switched by rotation of a chassis, so that the brake shoes loaded on each loading unit can be tested, and after the brake shoes are installed on the loading units, the positions of the brake shoes do not need to be repeatedly adjusted by the operator, so that the test efficiency is improved. And only one brake shoe needs to be taken down after detection is completed, and a new brake shoe is replaced to participate in subsequent detection, so that continuous performance detection of the brake can be ensured, and the performance detection efficiency of the brake is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of brake detection, in particular to a brake performance detection device. Background Art

[0002] Automobile brakes are devices that can slow down or stop moving mechanical parts, commonly known as brakes. They are important functional components of automobiles and are of great significance to the driving safety of automobiles. Common brakes are disc brakes and drum brakes. Drum brakes have the advantages of less brake pad wear, lower cost and easier maintenance. Therefore, they are still used on the rear wheels of economy cars.

[0003] Since traditional brake performance testing is limited to a single brake from loading to testing, and this operation method reduces the efficiency of brake performance testing to a certain extent, the existing technology, such as a Chinese patent with publication number CN118603593A, discloses a brake performance testing device for automobile brakes, including a workbench, on which a first positioning mechanism and a second positioning mechanism are provided, the first positioning mechanism is rotatably connected to the slider support, the first positioning mechanism is provided with a speed measuring component, the bottom end of the slider support is slidably connected to the workbench and can be close to or away from the second positioning mechanism; it also includes a rotating support, a plurality of support plates are distributed in an axial circumferential array on the top end of the rotating support, the second positioning mechanism is provided with a plurality of support plates respectively fixed on the support plates, the second positioning mechanism includes a fixed seat and a second positioning block, the second positioning block is hinged to the fixed seat at one end away from the slider support and can be flipped vertically up and down, the present invention can perform batch testing on brake shoes, is convenient and quick to disassemble and assemble, and has accurate positioning, thereby improving the efficiency of testing and ensuring the quality of the brake. In the above-mentioned prior art, although the performance test of the brake can be carried out uninterruptedly, the brake shoe is installed on the support plate and rotated with the support plate. At the same time, the brake shoe needs to alternately complete the flipping and pushing actions, which is relatively tight in terms of time. It may happen that the brake shoe and the brake drum are not properly matched, resulting in the brake shoe failing to overlap with the brake drum, and thus the braking performance of the brake cannot be accurately obtained.

[0004] To this end, the present invention provides a brake performance detection device. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a brake performance detection device according to the present invention comprises: A frame, and a loading module disposed within the frame; A servo motor is fixed to the frame, and an output shaft of the servo motor is used to be fixed to the brake drum; The loading module includes a loading unit, a trigger unit and a chassis; The trigger unit is fixed to the frame and passes through the chassis; the loading unit is slidably connected to the chassis and is provided in plurality and arranged in a circular array; the loading unit is used to fix the brake shoe; the loading unit includes a loading plate, a fastening sleeve, and a connecting rod; the loading plate is slidably connected to the chassis, the fastening sleeve is fixed to the loading plate via a nut, the connecting rod passes through the fastening sleeve, and the brake shoe is sleeved on the connecting rod; A baffle is fixed on the connecting rod at a position corresponding to the brake shoe, and a plurality of blocks are slidably connected to the inside of one end of the connecting rod corresponding to the brake shoe. The plurality of blocks cooperate with the screw rod. When the screw rod is spirally fed into the connecting rod, the plurality of blocks protrude from the connecting rod and press against the brake shoe.

[0007] Preferably, the frame includes a shield, a bearing plate, an intermediate plate and a bottom plate, the bearing plate, the intermediate plate and the bottom plate are buckled in sequence, and the shield is hinged to the edge of the bearing plate via a hinge; A bottom groove is provided on the carrier plate, and the loading module is arranged in the bottom groove. A clearance block is also fixed on the carrier plate, and the shield is buckled on the outside of the clearance block. A pad is also fixed on the carrier plate, and the servo motor is arranged on the pad.

[0008] Preferably, a slider is provided at the bottom of the loading plate, and a screw rod is connected through the position of the loading plate corresponding to the slider, and the slider and the loading plate are fixed via the screw rod; a sliding rod is fixed in the middle of the bottom of the loading plate, and the loading plate is slidably connected to the chassis based on the slider and the sliding rod; a first sliding groove is provided on the chassis, and the slider on the loading plate is slidably connected to the first sliding groove, and a second sliding groove is also provided on the chassis, and the sliding rod on the loading plate is slidably connected to the second sliding groove.

[0009] Preferably, the trigger unit includes a housing, a support arm, a first spring rod and a push block; the housing is fixed to the supporting plate by screws, one end of the support arm is hinged to the housing via a pin shaft, and two support arms are provided and arranged symmetrically; the other ends of the two support arms are hinged to the push block, and a first spring rod is fixed to the side wall of the push block, and the first spring rod is arranged horizontally with the housing to ensure horizontal displacement of the push block.

[0010] Preferably, a fixing groove is provided on the shell, and one end of the support arm is hinged in the fixing groove via a pin shaft; a movable groove is also provided in the shell, and the support arm, push block and first spring rod are all arranged in the movable groove; a through hole is also provided in the shell, and the through hole passes through the bottom of the shell; a storage groove is also provided on the side wall of the shell.

[0011] Preferably, a movable hole is opened on the chassis, and a push rod is connected through the movable hole, and a pressing spring is sleeved on the push rod, and the push rod is pressed against the surface of the supporting plate under the action of the pressing spring; A connecting groove is provided on the intermediate plate, and a giveway groove is provided at the end of the connecting groove; the connecting groove is connected to the giveway groove, and the intersection of the giveway groove and the connecting groove corresponds to the movable hole, and a movable block that slides up and down is provided at the intersection of the giveway groove and the connecting groove, and symmetrically arranged swing arms are hinged on both sides of the movable block, one end of the swing arm is hinged on the movable block, and the other end is horizontally slidably connected to the side wall of the giveway groove.

[0012] Preferably, the trigger unit further comprises a card block, a second spring rod being fixedly connected to a side wall of the card block, and the card block being slidably connected to a receiving groove on the housing via the second spring rod; a rope is wound around one end of the second spring rod outside the housing, and the other end inside the housing is the card block; one end of the rope is fixedly connected to the second spring rod, and the other end of the rope is guided by a guide wheel, passes through the side wall of the housing, extends through the through hole to the communicating groove and the giving way groove, and is fixedly connected to the other end of the swing arm; Clamping plates are fixedly connected to both sides of the push block, and the clamping plates are clamped and matched with the clamping block.

[0013] Preferably, teeth are fixed to the edge of the chassis, and the teeth are meshedly connected to a driving wheel, which is rotatably connected in the bottom groove.

[0014] Preferably, the loading module further includes a movable plate, and the chassis and the movable plate are arranged concentrically, and the movable plate is arranged at the bottom of the chassis.

[0015] Preferably, an arcuate groove is provided on the movable plate, and the sliding rod at the bottom of the loading plate passes through the bottom plate and is slidably engaged with the arcuate groove.

[0016] The beneficial effects of the present invention are as follows: 1. The brake performance testing device described in the present invention allows an operator to install multiple brake shoes in different loading units, and the chassis rotates to switch between different loading units, so that the brake shoes loaded on each loading unit can be tested. After the brake shoes are installed on the loading units, the operator does not need to repeatedly adjust the positions of the brake shoes. After the test of a brake shoe is completed, it only needs to be removed and replaced with a new brake shoe for subsequent tests. This can ensure continuous brake performance testing and improve the efficiency of brake performance testing.

[0017] 2. The brake performance testing device described in the present invention is a device that squeezes the movable block downward by a push rod, and the other ends of the two swing arms move away from each other, so that the other end of the rope is connected to the other end of one of the swing arms. When the other end of the swing arm is displaced, the rope can be pulled, and the second spring rod is pulled outward by the rope. When the second spring rod is pulled outward, the clamping fit relationship between the clamping block and the clamping plate disappears. At this time, the clamping plate is squeezed on the connecting rod together with the push block, thereby pushing the brake shoe on the connecting rod toward the brake drum, so that the brake shoe and the brake drum can overlap, ensuring accurate test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a perspective view of the present invention; Figure 2 It is a partial stereogram of the present invention; Figure 3 is a top view of the present invention; Figure 4 yes Figure 3 The enlarged view of point II in the figure; Figure 5 yes Figure 3 The cross-sectional view at point A-A in FIG; Figure 6 yes Figure 5 The enlarged view of point Ⅰ in the figure; Figure 7 yes Figure 3 The cross-sectional view at point B-B in FIG; Figure 8 is a perspective view of a loading module in the present invention; Figure 9 is a perspective view of a loading unit in the present invention; Figure 10 is a three-dimensional diagram of the trigger unit of the present invention; In the figure: 1. frame; 10. shield; 11. load-bearing plate; 110. bottom groove; 111. clearance block; 112. spacer; 12. intermediate plate; 121. connecting groove; 123. clearance groove; 124. movable block; 125. swing arm; 13. bottom plate; 2. servo motor; 3. loading module; 31. loading unit; 310. loading plate; 3101. connecting groove; 311. fastening sleeve; 312. connecting rod; 3121. baffle; 3122. stop block; 313. trigger spring; 314. screw; 315. slider; 3151. lead screw; 316. slide rod ;32. Trigger unit;320. Housing;3201. Fixed slot;3202. Movable slot;3203. Through hole;3204. Storage slot;321. Support arm;322. First spring rod;323. Push block;3231. Clamping plate;324. Clamping block;3241. Second spring rod;325. Guide wheel;326. Rope;33. Chassis;330. Teeth;331. First slide groove;332. Movable hole;333. Second slide groove;334. Pressing spring;335. Push rod;34. Movable disk;340. Arc groove;35. Drive wheel. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figures 1 to 3 As shown, a brake performance detection device according to an embodiment of the present invention includes a frame 1, a loading module 3 and a servo motor 2 arranged in the frame 1; the servo motor 2 is fixed to the frame 1, and the output shaft of the servo motor 2 is used to fix the brake drum; the loading module 3 includes a loading unit 31, a trigger unit 32 and a chassis 33; the trigger unit 32 is fixed to the frame 1, and the trigger unit 32 passes through the chassis 33; the loading unit 31 is slidably connected to the chassis 33, and a plurality of loading units 31 are provided, arranged in a circumferential array; the loading unit 31 is used to fix the brake shoe; the loading unit 31 includes a loading plate 310, a fastening sleeve 311, and a connecting rod 312; the loading plate 310 is slidably connected to the chassis 33, the fastening sleeve 311 is fixed to the loading plate 310 by a nut, the connecting rod 312 passes through the fastening sleeve 311, and the brake shoe is sleeved on the connecting rod 312; A baffle 3121 is fixedly connected to the position of the connecting rod 312 corresponding to the brake shoe, and a plurality of blocks 3122 are slidably connected to the inside of one end of the connecting rod 312 corresponding to the brake shoe. The plurality of blocks 3122 cooperate with the screw rod 314. When the screw rod 314 is spirally fed into the connecting rod 312, the plurality of blocks 3122 protrude from the connecting rod 312 and press against the brake shoe.

[0022] In the above-mentioned prior art, although the performance test of the brake can be carried out uninterruptedly, the brake is installed in the test position and needs to be flipped and pushed at the same time during the rotation process, which is relatively urgent. What may happen is that the parts are not matched properly, resulting in the brake shoe failing to overlap with the brake drum, and thus the braking performance of the brake cannot be accurately obtained.

[0023] In one embodiment of the present invention, when performing a brake performance test, multiple brakes are first fixed in the loading unit 31 in sequence. During the performance test, by controlling the chassis 33 to rotate a fixed angle, one loading unit 31 can be adjusted to be opposite to the output shaft of the servo motor 2, and the brake shoe loaded on the loading unit 31 is made concentric with the brake drum fixed on the output shaft of the servo motor 2. Subsequently, the trigger unit 32 is used to push the brake shoe on the loading unit 31 so that the brake shoe can coincide with the brake drum, thereby ensuring that the braking effect of the brake obtained by the test is accurate during the subsequent operation of the servo motor 2. Specifically, before the brake performance test, the operator sets multiple brakes, that is, the brake drum. The movable shoe is installed in different loading units 31, and the chassis 33 is rotated to switch different loading units 31, so that the brake shoe loaded on each loading unit 31 can be tested. After the brake shoe is installed on the loading unit 31, the operator does not need to repeatedly adjust the position of the brake shoe. It is only necessary to remove the brake shoe after the inspection is completed and replace it with a new brake shoe to participate in the subsequent inspection. Therefore, based on the above arrangement, the performance inspection of multiple brakes can be ensured to be continuous, and the performance inspection efficiency of the brakes can be improved. It is worth noting that a trigger spring 313 is also sleeved on the connecting rod 312, and the two ends of the trigger spring 313 abut between the loading plate 310 and the baffle 3121.

[0024] like Figures 1 to 2 As shown, the frame 1 includes a shield 10, a carrying plate 11, an intermediate plate 12 and a bottom plate 13. The carrying plate 11, the intermediate plate 12 and the bottom plate 13 are buckled in sequence, and the shield 10 is hinged to the edge of the carrying plate 11 via a hinge; A bottom groove 110 is formed on the carrier plate 11, and the loading module 3 is arranged in the bottom groove 110. A clearance block 111 is also fixedly connected to the carrier plate 11, and the shield 10 is buckled on the outside of the clearance block 111. A pad 112 is also fixedly connected to the carrier plate 11, and the servo motor 2 is arranged on the pad 112.

[0025] In one embodiment of the present invention, a bottom groove 110 is opened on the carrier plate 11 for setting the loading module 3 in the bottom groove 110. Secondly, the clearance block 111 provided on the carrier plate 11 can play a positioning effect on the buckle connection between the shield 10 and the carrier plate 11. The shield 10 is hinged to the edge of the carrier plate 11 through a hinge. When performing inspection, the shield 10 can be buckled on the carrier plate 11 to play a certain protective role.

[0026] like Figures 1 to 7 As shown, a slider 315 is provided at the bottom of the loading plate 310, and a screw rod 3151 is connected through the position of the loading plate 310 corresponding to the slider 315, and the slider 315 and the loading plate 310 are fixed via the screw rod 3151; a slide rod 316 is fixed to the middle of the bottom of the loading plate 310, and the loading plate 310 is slidably connected to the chassis 33 based on the slider 315 and the slide rod 316; a first sliding groove 331 is provided on the chassis 33, and the slider 315 on the loading plate 310 is slidably connected to the first sliding groove 331, and a second sliding groove 333 is also provided on the chassis 33, and the slide rod 316 on the loading plate 310 is slidably connected to the second sliding groove 333.

[0027] The first and second slide grooves 331 are used to engage the first and second slide grooves 331 of the first slide groove 331 so that the loading plate 310 can be slidably connected to the chassis 33, thereby achieving the purpose of adjusting the position of the loading plate 310 on the chassis 33 according to the brake shoe model. It is worth noting that the screw rod 3151 passes through the loading plate 310 and is connected to the slider 315. The screw rod 3151 is threadedly engaged with the nut and the screw rod 3151 to tightly fix the screw rod 3151 and the slider 315 together. In one embodiment of the present invention, loosening the nut and the screw rod 3151 can drive the loading plate 310 to change its position. After the position is determined, the nut is tightened to ensure that the loading plate 310 will not be displaced during the subsequent rotation of the chassis 33.

[0028] like Figures 1 to 7 、 Figure 10 As shown, the trigger unit 32 includes a housing 320, a support arm 321, a first spring rod 322 and a push block 323; the housing 320 is fixed to the supporting plate 11 by screws, one end of the support arm 321 is hinged to the housing 320 by a pin shaft, and two support arms 321 are provided and arranged symmetrically; the other ends of the two support arms 321 are hinged to the push block 323, and the first spring rod 322 is fixed to the side wall of the push block 323, and the first spring rod 322 is arranged horizontally with the housing 320 to ensure horizontal displacement of the push block 323.

[0029] Because in the prior art, when the structure loaded with the brake shoe is transferred to correspond to the brake drum loaded on the output shaft of the servo motor 2, it is necessary to use the driving structure to drive the collar to squeeze the brake shoe so that the brake shoe and the brake drum overlap. However, this method may have limitations such as jamming in actual application. Based on the above, in one embodiment of the present invention, the connecting rod 312 on the loading plate 310 is loaded with the brake shoe, and when it is transferred to correspond to the brake drum, the first spring rod 322 in the trigger unit 32 drives the connecting rod 312 toward the brake drum, that is, the direction position of the servo motor 2. When the push block 323 is in the closed position, the first spring rod 322 accumulates the force and drives the push block 323 to quickly pop out, thereby pushing the connecting rod 312 to move toward the direction of the servo motor 2.

[0030] like Figures 1 to 7 、 Figure 10 As shown, a fixed groove 3201 is provided on the shell 320, and one end of the support arm 321 is hinged in the fixed groove 3201 via a pin shaft; a movable groove 3202 is also provided in the shell 320, and the support arm 321, the push block 323 and the first spring rod 322 are all arranged in the movable groove 3202; a through hole 3203 is also provided in the shell 320, and the through hole 3203 passes through the bottom of the shell 320; a storage groove 3204 is also provided on the side wall of the shell 320.

[0031] like Figures 1 to 7 As shown, a movable hole 332 is formed on the chassis 33, and a push rod 335 is connected through the movable hole 332, and a pressing spring 334 is sleeved on the push rod 335. The push rod 335 is pressed against the surface of the supporting plate 11 under the action of the pressing spring 334; A connecting groove 121 is provided on the intermediate plate 12, and a clearance groove 123 is provided at the end of the connecting groove 121; the connecting groove 121 is connected to the clearance groove 123, and the intersection of the clearance groove 123 and the connecting groove 121 corresponds to the movable hole 332, and a movable block 124 that slides up and down is provided at the intersection of the clearance groove 123 and the connecting groove 121, and symmetrically arranged swing arms 125 are hinged on both sides of the movable block 124, one end of the swing arm 125 is hinged on the movable block 124, and the other end is horizontally slidably connected to the side wall of the clearance groove 123.

[0032] The trigger unit 32 can only be triggered when the loading plate 310 loaded with the brake shoes is transferred to the position corresponding to the brake drum, and the first spring rod 322 pushes the push block 323, and then pushes the connecting rod 312, so that the connecting rod 312 drives the brake shoes to move toward the direction of the servo motor 2 until the brake shoes and the brake drum coincide with each other. Specifically, in one embodiment of the present invention, when the chassis 33 drives the loading plate 310 loaded with the brake shoes to be transferred to the position corresponding to the brake drum, the supporting rod 335 on the chassis 33 will be pressed by the supporting spring 334. The surface of the bottom groove 110 slides to penetrate the supporting plate 11, and then penetrates into the clearance groove 123, and squeezes the movable block 124 in the clearance groove 123, so that the movable block 124 slides downward and the other ends of the two swing arms 125 are separated from each other. Based on this, when the chassis 33 drives the loading plate 310 loaded with brake shoes to transfer to the position corresponding to the brake drum, the positioning can be achieved based on the support rod 335 penetrating the loading plate 310, ensuring that the trigger unit 32 can drive the brake shoes on the loading plate 310 to move toward the brake drum, thereby ensuring the accuracy of the performance test.

[0033] like Figures 1 to 7 、 Figure 10 As shown, the trigger unit 32 also includes a block 324, a second spring rod 3241 fixedly connected to the side wall of the block 324, and the block 324 is slidably connected to the storage groove 3204 on the housing 320 via the second spring rod 3241. A rope 326 is wrapped around one end of the second spring rod 3241 outside the housing 320, and the other end inside the housing 320 is the block 324. One end of the rope 326 is fixedly connected to the second spring rod 3241, and the other end of the rope 326 is guided by the guide wheel 325, passes through the side wall of the housing 320, extends through the through hole 3203 to the connecting groove 121 and the yield groove 123, and is fixedly connected to the other end of the swing arm 125. Clamping plates 3231 are fixedly connected to both sides of the push block 323 , and the clamping plates 3231 are clamped and matched with the clamping block 324 .

[0034] When the push rod 335 passes through the loading plate 310 and extends into the clearance groove 123 to squeeze the movable block 124, although it can play a positioning effect to ensure that the trigger unit 32 can accurately act on the connecting rod 312, so that the connecting rod 312 drives the brake shoe to move, but the above does not disclose how and when the trigger unit 32 is triggered. In one embodiment of the present invention, when the push rod 335 squeezes the movable block 124 and slides downward, the other ends of the two swing arms 125 move away from each other, so that the other end of one of the swing arms 125 is moved away from each other. One end is connected to the other end of the rope 326. When the other end of the swing arm 125 is displaced, the rope 326 can be pulled, and the second spring rod 3241 is pulled outward by using the rope 326. When the second spring rod 3241 is pulled outward, the clamping fit relationship between the clamping block 324 and the clamping plate 3231 disappears. At this time, the clamping plate 3231 is squeezed on the connecting rod 312 together with the pushing block 323, thereby pushing the brake shoe on the connecting rod 312 toward the brake drum, so that the brake shoe and the brake drum can overlap, ensuring the accuracy of the test results.

[0035] like Figures 1 to 3 、 Figure 8 As shown, teeth 330 are fixed to the edge of the chassis 33 , and the teeth 330 are meshedly connected to the driving wheel 35 , and the driving wheel 35 is rotatably connected in the bottom groove 110 .

[0036] As mentioned above, the chassis 33 needs to rotate when switching the brake shoes. Therefore, in one embodiment of the present invention, the driving wheel 35 cooperates with the teeth 330 to drive the chassis 33 to rotate in the bottom groove 110. When the chassis 33 rotates, it can drive the loading plate 310 loaded with the brake shoes to be transferred to the position corresponding to the brake drum. The driving wheel 35 can be driven by an external motor or other device, which will not be described in detail here.

[0037] like Figures 1 to 3 、 Figure 8 、 Figure 9 As shown, the loading module 3 further includes a movable plate 34 , and the base plate 33 and the movable plate 34 are arranged concentrically, and the movable plate 34 is arranged at the bottom of the base plate 33 .

[0038] like Figures 1 to 3 、 Figure 8 、 Figure 9 As shown, an arcuate slot 340 is formed on the movable plate 34 , and the sliding rod 316 at the bottom of the loading plate 310 passes through the bottom plate 33 and is slidably engaged with the arcuate slot 340 .

[0039] Continuing from the above, when the position of the loading plate 310 on the chassis 33 needs to be adjusted, the connection between the nut and the screw rod 3151 can be loosened, and the loading plate 310 can be driven to move on the chassis 33 through the slider 315 and the slide bar 316. The displacement of a single loading plate 310 may cause the position of the other loading plates 310 to be different. Therefore, when a single loading plate 310 is displaced, the other loading plates 310 need to be displaced synchronously to ensure smooth operation. In one embodiment of the present invention, the slide bar 316 at the bottom of the loading plate 310 can pass through the chassis 33 and be connected to the arc groove 340 on the movable disk 34. When one of the loading plates 310 is displaced, the slide bar 316 will slide in the arc groove 340, thereby driving the movable disk 34 to rotate. When the movable disk 34 rotates, the other loading plates 310 will all move synchronously due to the cooperation between the slide bar 316 at the bottom and the arc groove 340.

[0040] Working principle: When conducting brake performance testing, multiple brakes are first fixed in the loading unit 31 in sequence. During the performance testing process, by controlling the chassis 33 to rotate a fixed angle, one loading unit 31 can be adjusted to be opposite to the output shaft of the servo motor 2, and the brake shoe loaded on the loading unit 31 is made concentric with the brake drum fixed on the output shaft of the servo motor 2. Then, the trigger unit 32 is used to push the brake shoe on the loading unit 31 so that the brake shoe can coincide with the brake drum, thereby ensuring that the braking effect of the brake obtained by the test is accurate during the subsequent operation of the servo motor 2. Specifically, Before the brake performance test, the operator installs multiple brakes, that is, brake shoes, in different loading units 31, and rotates the chassis 33 to switch different loading units 31, so that the brake shoes loaded on each loading unit 31 can be tested. After the brake shoes are installed on the loading units 31, the operator does not need to repeatedly adjust the position of the brake shoes. After the test of one brake shoe is completed, it only needs to be removed and replaced with a new brake shoe to participate in the subsequent test. Therefore, based on the above settings, the performance test of the brake can be ensured to be continuous, and the efficiency of the brake performance test can be improved.

[0041] A bottom groove 110 is provided on the carrying plate 11 for arranging the loading module 3 in the bottom groove 110. Secondly, a clearance block 111 provided on the carrying plate 11 can play a positioning effect on the buckling of the shield 10 and the carrying plate 11. The shield 10 is hinged to the edge of the carrying plate 11 through a hinge. When performing inspection, the shield 10 can be buckled on the carrying plate 11 to play a certain protective role. Since the loading plate 310 is mainly used for loading brake shoes, and for different types of brake shoes, it may be necessary to adjust the position of the loading plate 310 on the chassis 33, in one embodiment of the present invention, it is first necessary to use a screw rod 3151 to connect the slider 315 and the loading plate 310, and then use the slider to connect the slider 315 and the loading plate 310. The block 315 cooperates with the first slide groove 331 to enable the loading plate 310 to be slidably connected to the chassis 33, thereby achieving the purpose of adjusting the position of the loading plate 310 on the chassis 33 according to the brake shoe model; it is worth noting that the screw rod 3151 passes through the loading plate 310 and is connected to the slider 315. The screw rod 3151 and the slider 315 can be tightly fixed together by using the nut and the screw rod 3151 to cooperate with each other. In one embodiment of the present invention, loosening the nut and the screw rod 3151 can drive the loading plate 310 to change its position. After the position is determined, the nut can be tightened to ensure that the loading plate 310 will not be displaced during the subsequent rotation of the chassis 33.

[0042] When the structure loaded with the brake shoe is transferred to the position corresponding to the brake drum loaded on the output shaft of the servo motor 2, it is also necessary to use the driving structure to drive the collar to squeeze the brake shoe so that the brake shoe and the brake drum overlap. However, this method may have limitations such as jamming in actual application. Based on the above, in one embodiment of the present invention, the connecting rod 312 on the loading plate 310 is loaded with the brake shoe, and when it is transferred to the position corresponding to the brake drum, the first spring rod 322 in the trigger unit 32 drives the connecting rod 312 toward the brake drum, that is, the direction of the servo motor 2, so that The brake shoe loaded on the connecting rod 312 can overlap with the brake drum. It is worth noting that when in use, the push block 323 is connected and limited by two support arms 321. When the push block 323 is retracted inside the shell 320, the ends of the two support arms 321 that are not connected to the push block 323 will move away and slide in the shell 320 respectively, and the support arms 321 are almost parallel to the side walls of the shell 320. When the push block 323 pops out, the first spring rod 322 accumulates force and drives the push block 323 to pop out quickly to the outside, thereby pushing the connecting rod 312 to move toward the direction of the servo motor 2.

[0043] The trigger unit 32 can only be triggered when the loading plate 310 loaded with the brake shoes is transferred to the position corresponding to the brake drum, and the first spring rod 322 pushes the push block 323, and then pushes the connecting rod 312, so that the connecting rod 312 drives the brake shoes to move toward the direction of the servo motor 2 until the brake shoes and the brake drum coincide with each other. Specifically, in one embodiment of the present invention, when the chassis 33 drives the loading plate 310 loaded with the brake shoes to be transferred to the position corresponding to the brake drum, the supporting rod 335 on the chassis 33 will be pressed by the supporting spring 334. The surface of the bottom groove 110 slides to penetrate the supporting plate 11, and then penetrates into the clearance groove 123, and squeezes the movable block 124 in the clearance groove 123, so that the movable block 124 slides downward and the other ends of the two swing arms 125 are separated from each other. Based on this, when the chassis 33 drives the loading plate 310 loaded with brake shoes to transfer to the position corresponding to the brake drum, the positioning can be achieved based on the support rod 335 penetrating the loading plate 310, ensuring that the trigger unit 32 can drive the brake shoes on the loading plate 310 to move toward the brake drum, thereby ensuring the accuracy of the performance test. When the push rod 335 passes through the loading plate 310 and extends into the clearance groove 123 to squeeze the movable block 124, although it can play a positioning effect to ensure that the trigger unit 32 can accurately act on the connecting rod 312, so that the connecting rod 312 drives the brake shoe to move, but the above does not disclose how and when the trigger unit 32 is triggered. In one embodiment of the present invention, when the push rod 335 squeezes the movable block 124 and slides downward, the other ends of the two swing arms 125 move away from each other, so that the other end of one of the swing arms 125 is moved away from each other. One end is connected to the other end of the rope 326. When the other end of the swing arm 125 is displaced, the rope 326 can be pulled, and the second spring rod 3241 is pulled outward by using the rope 326. When the second spring rod 3241 is pulled outward, the clamping fit relationship between the clamping block 324 and the clamping plate 3231 disappears. At this time, the clamping plate 3231 is squeezed on the connecting rod 312 together with the pushing block 323, thereby pushing the brake shoe on the connecting rod 312 toward the brake drum, so that the brake shoe and the brake drum can overlap, ensuring the accuracy of the test results.

[0044] When the position of the loading plate 310 needs to be adjusted on the chassis 33, the connection between the nut and the screw rod 3151 can be loosened, and the loading plate 310 can be driven to move on the chassis 33 through the slider 315 and the slide bar 316. The displacement of a single loading plate 310 may cause the position of the other loading plates 310 to be different. Therefore, when a single loading plate 310 is displaced, the other loading plates 310 need to be displaced synchronously to ensure smooth operation. In one embodiment of the present invention, the slide bar 316 at the bottom of the loading plate 310 can pass through the chassis 33 and be connected to the arc groove 340 on the movable disk 34. When one of the loading plates 310 is displaced, the slide bar 316 will slide in the arc groove 340, thereby driving the movable disk 34 to rotate. When the movable disk 34 rotates, the other loading plates 310 will all move synchronously due to the cooperation between the slide bar 316 at the bottom and the arc groove 340.

[0045] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A brake performance detection device, characterized in that: include: A frame (1), and a loading module (3) disposed within the frame (1); A servo motor (2) is fixedly connected to the frame (1), and an output shaft of the servo motor (2) is used to be fixedly connected to the brake drum; The loading module (3) comprises a loading unit (31), a trigger unit (32) and a chassis (33); The trigger unit (32) is fixed to the frame (1), and the trigger unit (32) passes through the chassis (33); the loading unit (31) is slidably connected to the chassis (33), and a plurality of loading units are provided and arranged in a circumferential array; the loading unit (31) is used to fix the brake shoe; the loading unit (31) includes a loading plate (310), a fastening sleeve (311), and a connecting rod (312); the loading plate (310) is slidably connected to the chassis (33), the fastening sleeve (311) is fixed to the loading plate (310) via a nut, the connecting rod (312) passes through the fastening sleeve (311), and the brake shoe is sleeved on the connecting rod (312); A baffle (3121) is fixedly connected to the position of the connecting rod (312) corresponding to the brake shoe, and a plurality of retaining blocks (3122) are slidably connected to the inside of one end of the connecting rod (312) corresponding to the brake shoe. The plurality of retaining blocks (3122) cooperate with the screw rod (314). When the screw rod (314) is spirally fed into the connecting rod (312), the plurality of retaining blocks (3122) protrude from the connecting rod (312) and press against the brake shoe.

2. The brake performance detection device according to claim 1, characterized in that: The frame (1) comprises a shield (10), a bearing plate (11), an intermediate plate (12) and a bottom plate (13), wherein the bearing plate (11), the intermediate plate (12) and the bottom plate (13) are sequentially buckled, and the shield (10) is hinged to the edge of the bearing plate (11) via a hinge; A bottom groove (110) is formed on the carrier plate (11), and the loading module (3) is arranged in the bottom groove (110). A clearance block (111) is also fixedly connected to the carrier plate (11), and the shield (10) is buckled onto the outside of the clearance block (111). A cushion block (112) is also fixedly connected to the carrier plate (11), and the servo motor (2) is arranged on the cushion block (112).

3. The brake performance detection device according to claim 2, characterized in that: A slider (315) is provided at the bottom of the loading plate (310), and a screw rod (3151) is connected through a position on the loading plate (310) corresponding to the slider (315), and the slider (315) and the loading plate (310) are fixed via the screw rod (3151); a slide rod (316) is fixed in the middle of the bottom of the loading plate (310), and the loading plate (310) is slidably connected to the chassis (33) based on the slider (315) and the slide rod (316); a first sliding groove (331) is provided on the chassis (33), and the slider (315) on the loading plate (310) is slidably connected to the first sliding groove (331); a second sliding groove (333) is also provided on the chassis (33), and the slide rod (316) on the loading plate (310) is slidably connected to the second sliding groove (333).

4. The brake performance detection device according to claim 3, characterized in that: The trigger unit (32) includes a housing (320), a support arm (321), a first spring rod (322) and a push block (323); the housing (320) is fixed to the supporting plate (11) via screws, one end of the support arm (321) is hinged to the housing (320) via a pin shaft, and two support arms (321) are provided and arranged symmetrically; the other ends of the two support arms (321) are hinged to the push block (323), and a first spring rod (322) is fixed to the side wall of the push block (323), and the first spring rod (322) is arranged horizontally with the housing (320) to ensure horizontal displacement of the push block (323).

5. The brake performance detection device according to claim 4, characterized in that: The housing (320) is provided with a fixed groove (3201), and one end of the support arm (321) is hinged in the fixed groove (3201) via a pin; the housing (320) is further provided with a movable groove (3202), and the support arm (321), the push block (323) and the first spring rod (322) are all arranged in the movable groove (3202); the housing (320) is further provided with a through hole (3203), and the through hole (3203) passes through the bottom of the housing (320); and the side wall of the housing (320) is further provided with a receiving groove (3204).

6. The brake performance detection device according to claim 5, characterized in that: A movable hole (332) is provided on the chassis (33), and a push rod (335) is connected through the movable hole (332), and a pressing spring (334) is sleeved on the push rod (335). Under the action of the pressing spring (334), the push rod (335) presses against the surface of the bearing plate (11); A connecting groove (121) is provided on the intermediate plate (12), and a clearance groove (123) is provided at the end of the connecting groove (121); the connecting groove (121) is connected to the clearance groove (123), and the intersection of the clearance groove (123) and the connecting groove (121) corresponds to the movable hole (332), and a movable block (124) that slides up and down is provided at the intersection of the clearance groove (123) and the connecting groove (121), and symmetrically arranged swing arms (125) are hinged on both sides of the movable block (124), one end of the swing arm (125) is hinged on the movable block (124), and the other end is horizontally slidably connected to the side wall of the clearance groove (123).

7. The brake performance detection device according to claim 6, characterized in that: The trigger unit (32) further includes a block (324), a second spring rod (3241) being fixedly connected to a side wall of the block (324), and the block (324) being slidably connected to a receiving groove (3204) on the housing (320) via the second spring rod (3241); a rope (326) is wound around one end of the second spring rod (3241) outside the housing (320), and the other end inside the housing (320) is the block (324); one end of the rope (326) is fixedly connected to the second spring rod (3241), and the other end of the rope (326) is guided by the guide wheel (325) and passes through the side wall of the housing (320), extends to the connecting groove (121) and the giving way groove (123) through the through hole (3203), and is fixedly connected to the other end of the swing arm (125); Clamping plates (3231) are fixedly connected to both sides of the push block (323), and the clamping plates (3231) are clamped and matched with the clamping block (324).

8. The brake performance detection device according to claim 7, characterized in that: The edge of the chassis (33) is also fixed with teeth (330), and the teeth (330) are meshedly connected with a driving wheel (35), and the driving wheel (35) is rotatably connected in the bottom groove (110).

9. The brake performance detection device according to claim 8, characterized in that: The loading module (3) further includes a movable disk (34), and the bottom plate (33) and the movable disk (34) are arranged concentrically, and the movable disk (34) is arranged at the bottom of the bottom plate (33).

10. The brake performance detection device according to claim 9, characterized in that: An arcuate groove (340) is provided on the movable plate (34), and a sliding rod (316) at the bottom of the loading plate (310) passes through the bottom plate (33) and is slidably engaged with the arcuate groove (340).

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