Automatic testing device for train brake cylinder

Abstract

The present invention is an automatic detection device for train brake cylinders, which includes a housing, a wrench assembly, a force measuring assembly and a stop assembly. A brake cylinder to be detected is fixedly arranged in the housing, the wrench assembly can be movably arranged in the housing along the extension direction of the brake cylinder piston rod, one end of the wrench assembly close to the brake cylinder piston rod is connected to the end of the brake cylinder piston rod, the force measuring assembly is arranged on the wrench assembly away from the end of the brake cylinder piston rod, the stop assembly can be movably arranged on the housing along the extension direction of the brake cylinder piston rod, and when the wrench assembly drives the brake cylinder piston rod to move to the test point position, the stop assembly abuts against the force measuring assembly. The present invention solves the technical problems of cumbersome and laborious manual operation of the detection personnel at each test point of the train brake cylinder, and low test efficiency and safety.

Description

Technical Field

[0001] The invention relates to the field of rail transportation, and in particular to an automatic detection device for a train brake cylinder. Background Art

[0002] As one of the actuators of the train's basic brakes, the brake cylinder plays a vital role in the safe operation of the train. The performance of the brake cylinder directly affects the safe operation of the vehicle. Therefore, the performance detection of the brake cylinder is particularly important.

[0003] At present, the brake cylinder mainly brakes and relieves railway vehicles (i.e., trains) by controlling the displacement and braking force between the brake pad and the brake disc. According to these two parameters, the brake cylinder can be divided into multiple test items for testing, including strength test, leakage test, action stroke, one-time adjustment amount, maximum adjustment amount, maximum piston effective stroke, brake cylinder output force, parking cylinder output force, parking cylinder manual relief and maximum parking piston effective stroke. The position of the brake cylinder piston rod required for the detection of different test items is different. Therefore, during the detection process, it is necessary to adjust the return nut of the brake cylinder to stop the piston rod at the corresponding position to achieve the purpose of testing different test items; at the same time, the stop block (the stop block is used to stop the moving position of the brake cylinder piston rod, so as to facilitate the force sensor to collect the braking force) should change the stop position according to the requirements of different test items, and should have both rigid stop function and elastic stop function. The existing detection method and detection device are to install the brake cylinder on the detection device. During the detection process, according to the requirements of different test items, the position of the return nut of the brake cylinder is manually adjusted in time, the piston rod is adjusted to the test position, and the stop blocks of different lengths are manually replaced, thereby completing the detection of the braking performance of the brake cylinder.

[0004] The above detection method and detection device mainly have the following disadvantages and shortcomings:

[0005] 1. Since the test items require different positions of the piston rod, the return nut needs to be manually adjusted many times during the test, which consumes human resources and increases labor costs;

[0006] Second, during the testing process, it is necessary to manually replace the stop blocks of different lengths many times, which is easy to pinch the hands and increase safety risks;

[0007] 3. Manual control during the detection process introduces human factors, which increases the failure rate of the test, increases the test error, and reduces the test efficiency.

[0008] There is currently no effective solution to the problem that manual operation of various test items of train brake cylinders in related technologies is cumbersome and laborious, and the test efficiency and safety are low.

[0009] Therefore, the inventor, relying on his many years of experience and practice in related industries, proposes an automatic detection device for train brake cylinders to overcome the defects of the prior art. Summary of the invention

[0010] The purpose of the present invention is to provide an automatic detection device for train brake cylinders. During the entire brake cylinder detection process, all test items are automatically tested, thereby improving the degree of automation of the detection, reducing the labor intensity of the staff, and effectively ensuring the efficiency of the detection. At the same time, it eliminates human operation errors and existing safety risks, and improves the accuracy of brake cylinder detection.

[0011] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0012] The present invention provides a train brake cylinder automatic detection device, comprising:

[0013] A housing in which a brake cylinder to be tested is fixedly arranged;

[0014] A wrench assembly is movably arranged inside the housing along the extension direction of the brake cylinder piston rod, and one end of the wrench assembly close to the brake cylinder piston rod is connected to the end of the brake cylinder piston rod to drive the brake cylinder piston rod to move to the test point position;

[0015] A force measuring assembly, which is arranged on the end of the wrench assembly away from the brake cylinder piston rod to collect the braking force of the brake cylinder piston rod at the test point position;

[0016] A stop assembly is movably arranged on the outer shell along the extension direction of the brake cylinder piston rod. When the wrench assembly drives the brake cylinder piston rod to move to the test item point position, the stop assembly abuts against the force measuring assembly to stop the moving position of the brake cylinder piston rod.

[0017] In a preferred embodiment of the present invention, the wrench assembly includes a first guide bracket, a first actuator cylinder and a first drive motor, the first guide bracket is movably connected to the inner wall of the outer shell along the extension direction of the brake cylinder piston rod, the first actuator cylinder is arranged on the first guide bracket, the first drive motor is arranged at the end of the piston rod of the first actuator cylinder, and the output shaft of the first drive motor is connected to the end of the brake cylinder piston rod.

[0018] In a preferred embodiment of the present invention, a return nut is provided at the end of the brake cylinder piston rod, and a block-shaped wrench is provided at the end of the output shaft of the first drive motor. The wrench is provided with a clamping hole matching the return nut, the return nut is embedded in the clamping hole, and the outer wall of the return nut is clamped with the inner wall of the clamping hole.

[0019] In a preferred embodiment of the present invention, a torque sensor is provided on the output shaft of the first drive motor, and a signal output end of the torque sensor is electrically connected to a signal receiving end of the controller.

[0020] In a preferred embodiment of the present invention, a displacement sensor is provided on the first guide bracket, and a signal output end of the displacement sensor is electrically connected to a signal receiving end of the controller.

[0021] In a preferred embodiment of the present invention, the first guide bracket includes a support plate and two sliders, the two sliders are respectively arranged at the two ends of the support plate, and guide rails parallel to the brake cylinder piston rod are respectively arranged on the two opposite inner walls of the outer shell, the support plate is located between the two guide rails, and the support plate is perpendicular to the guide rails, and the two sliders are respectively slidably arranged on the corresponding guide rails so that the support plate can slide along the guide rails.

[0022] In a preferred embodiment of the present invention, the first guide bracket further includes a supporting plate and two connecting rods, the two connecting rods are respectively located on both sides of the first drive motor, and one end of the two connecting rods is respectively connected to the supporting plate, and the other ends of the two connecting rods are respectively clamped on the outer wall of the brake cylinder piston rod;

[0023] The support plate is slidably disposed on the top of the two connecting rods, the first actuator cylinder is disposed on the top of the support plate, the end of the piston rod of the first actuator cylinder is connected to the top surface of the support plate, the bottom surface of the support plate is close to two relative edge positions and is slidably contacted with the top of the two connecting rods respectively, and the first drive motor is disposed in the middle position of the bottom surface of the support plate.

[0024] In a preferred embodiment of the present invention, the force measuring assembly includes a top block and a force sensor, the top block is fixedly disposed on the outer wall of the support plate on one side close to the stop assembly, the force sensor is fixedly clamped between the support plate and the top block, and the top block can abut against the stop assembly.

[0025] In a preferred embodiment of the present invention, the stopper assembly comprises a second driving motor, a lead screw, an end plate, a pressure block and a compression spring, the lead screw is sleeved with a lead screw nut, and the lead screw nut is fixed to the housing, the output shaft of the second driving motor is connected to one end of the lead screw, the other end of the lead screw is provided with a accommodating blind hole, the end plate is sealed at the open end of the accommodating blind hole, the compression spring and the pressure block are both located in the accommodating blind hole and are arranged in sequence from the sealed end of the accommodating blind hole to the open end of the accommodating blind hole, a through hole is provided on the end plate, a convex block is provided at a position opposite to the through hole on the pressure block, and the compression spring presses the pressure block so that the convex block passes through the through hole and extends to the outside of the accommodating blind hole;

[0026] A movable switching plate is provided on the outer wall of the top block on one side close to the stop assembly, and a receiving groove is provided on the switching plate at a position opposite to the protrusion, and the protrusion can be inserted into the receiving groove so that the end plate and the switching plate abut against each other; the switching plate is moved to a position where the receiving groove and the protrusion are staggered so that the top block and the protrusion abut against each other.

[0027] In a preferred embodiment of the present invention, the switching plate is arranged in the vertical direction, the accommodating groove is provided at the top of the switching plate, a vertically extending strip-shaped guide hole is provided at the bottom of the switching plate, a limit block is slidably provided in the guide hole, and a bolt is connected between the limit block and the top block;

[0028] A second actuating cylinder is disposed on the top block, a first connecting plate is disposed at the bottom of the switching plate, and a piston rod of the second actuating cylinder is vertically disposed and connected to the first connecting plate to drive the switching plate to move vertically.

[0029] In a preferred embodiment of the present invention, the control end of the first actuator cylinder, the control end of the first drive motor, the control end of the second drive motor and the control end of the second actuator cylinder are electrically connected to the control signal output end of the controller respectively, and the signal output end of the force sensor is electrically connected to the signal receiving end of the controller.

[0030] In a preferred embodiment of the present invention, a rear seat is further provided in the accommodating blind hole, the outer wall of the rear seat is threadedly connected to the inner wall of the accommodating blind hole, a first boss is provided on the rear seat, the boss is located in the middle position of one end of the pressure block, and a second boss is provided at the other end of the pressure block, and the two ends of the compression spring are respectively sleeved on the first boss and the second boss and respectively abut against the rear seat and the pressure block.

[0031] In a preferred embodiment of the present invention, the stop assembly further comprises a second guide bracket providing a mounting position for the second drive motor;

[0032] The second guide bracket includes a second connecting plate and two guide rods. The second drive motor is fixed at the middle position of the second connecting plate. The two guide rods are respectively located on both sides of the second drive motor, and one end of the two guide rods is respectively fixed to the second connecting plate, and the other end of the two guide rods is respectively fixed to the outer wall of the outer shell.

[0033] In a preferred embodiment of the present invention, an air circuit system is disposed inside the housing, the air circuit system is connected to the brake cylinder, and a control end of the air circuit system is electrically connected to a control signal output end of a controller.

[0034] In a preferred embodiment of the present invention, a mounting seat is fixedly provided on the inner wall of the shell, and the brake cylinder is fixed on the mounting seat.

[0035] As described above, the characteristics and advantages of the automatic detection device for train brake cylinders of the present invention are: the brake cylinder piston rod can be automatically driven to move to the test point position through the wrench assembly, and can be automatically moved to the stop position corresponding to the test point through the stop assembly, without manual operation by the staff throughout the process, and the brake cylinder piston rod and the stop position are automatically adjusted during the experiment, which effectively reduces the test time and improves the efficiency of the new manufacture and maintenance of the brake cylinder. A force measuring assembly is provided on the wrench assembly. During the test, the force measuring assembly and the stop assembly are offset. The braking force of the brake cylinder can be collected in real time through the force measuring assembly, eliminating the errors and safety risks caused by human operation and data collection, effectively improving the detection accuracy of the brake cylinder, and then improving the factory quality of the brake cylinder, which is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0037] in:

[0038] Figure 1 : It is a top sectional view of the automatic detection device for train brake cylinder of the present invention.

[0039] Figure 2 : It is a structural schematic diagram of the stop assembly in the automatic detection device for train brake cylinder of the present invention.

[0040] Figure 3 :for Figure 2 A partial enlarged view of position A in the middle.

[0041] Figure 4 : It is a structural schematic diagram of the force measuring component in the automatic detection device of the train brake cylinder of the present invention.

[0042] Figure 5 :for Figure 4Cross-sectional view at the mid-BB position.

[0043] Figure 6 : It is a structural schematic diagram of the wrench assembly in the automatic detection device for train brake cylinder of the present invention.

[0044] The accompanying drawings in the present invention are:

[0045] 1. Shell; 2. Stopper assembly;

[0046] 201. A second driving motor; 202. A second guide bracket;

[0047] 2021. guide rod; 2022. second connecting plate;

[0048] 203, lead screw; 2031, accommodating blind hole;

[0049] 204, end plate; 205, pressing block;

[0050] 2051, a projection; 2052, a second projection;

[0051] 206, rear seat; 2061, first boss;

[0052] 207, compression spring; 208, lead screw nut;

[0053] 3. Force measuring assembly; 301. Top block;

[0054] 302, force sensor; 303, switch board;

[0055] 3031, receiving groove; 3032, guide hole;

[0056] 304, second actuating cylinder; 305, limiting block;

[0057] 306. bolt; 307. first connecting plate;

[0058] 4. Wrench assembly; 401. First guide bracket;

[0059] 4011, support plate; 4012, slider;

[0060] 402, a first execution cylinder; 403, a first drive motor;

[0061] 404. torque sensor; 405. wrench;

[0062] 4051, card hole; 406, displacement sensor;

[0063] 407, supporting plate; 408, connecting rod;

[0064] 4081, card block; 5, guide rail;

[0065] 6. Brake cylinder; 601. Return nut;

[0066] 602, brake cylinder piston rod; 7, mounting seat;

[0067] 8. Gas system; 9. Controller. DETAILED DESCRIPTION

[0068] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0069] like Figures 1 to 6 As shown, the present invention provides a train brake cylinder automatic detection device, which includes a shell 1, a wrench assembly 4, a force measuring assembly 3 and a stop assembly 2. The shell 1 is a rectangular box structure, and a brake cylinder 6 to be detected is fixedly arranged on the inner wall of the shell 1. The wrench assembly 4 can be movably arranged inside the shell 1 along the extension direction of the brake cylinder piston rod 602, and the end of the wrench assembly 4 close to the brake cylinder piston rod 602 is detachably connected to the end of the brake cylinder piston rod 602, and the wrench assembly 4 moves in the shell 1 to drive the brake cylinder piston rod 602 to move to the test point position. The force measuring component 3 is fixedly arranged on the wrench component 4 at one end away from the brake cylinder piston rod 602. During the test, the output force (i.e., braking force) of the brake cylinder 6 at the test point position of the brake cylinder piston rod 602 is collected through the force measuring component 3. The stop component 2 can be movably arranged on the outer shell 1 along the extension direction of the brake cylinder piston rod 602. The stop component 2 and the brake cylinder 6 are respectively arranged on both sides of the wrench component 4. When the wrench component 4 drives the brake cylinder piston rod 602 to move to the test point position, the stop component 2 abuts against the force measuring component 3 to stop the moving position of the brake cylinder piston rod 602.

[0070] The present invention is provided with a wrench assembly 4 that can move along the extension direction of the brake cylinder piston rod 602 inside the housing 1, the wrench assembly 4 is connected to the brake cylinder piston rod 602, and the brake cylinder piston rod 602 is automatically driven to move to the test point position through the wrench assembly 4. In addition, the housing 1 is also provided with a stopper assembly 2 that can move along the extension direction of the brake cylinder piston rod 602, and the stopper assembly 2 automatically moves to the stopper position corresponding to the test point, and no manual operation is required by the staff throughout the whole process. During the experiment, the brake cylinder piston rod 602 and the stopper position are automatically adjusted, which effectively reduces the test time consumption and improves the efficiency of the new manufacturing and maintenance of the brake cylinder 6. In addition, a force measuring assembly 3 is provided on the wrench assembly 4. During the test process, the force measuring assembly 3 and the stopper assembly 2 are offset, and the braking force of the brake cylinder 6 can be collected in real time through the force measuring assembly 3, eliminating the errors and safety risks caused by human operation and data collection, effectively improving the detection accuracy of the brake cylinder 6, and then improving the factory quality of the brake cylinder 6, which is suitable for promotion and use.

[0071] In an optional embodiment of the present invention, Figure 1 As shown, a controller 9 is provided on the outer wall of the housing 1, and an air circuit system 8 is provided inside the housing 1. The air circuit system 8 is connected to the brake cylinder 6, and the control end of the air circuit system 8 is electrically connected to the control signal output end of the controller 9. The controller 9 controls the working state of the air circuit system 8, so that the brake cylinder 6 is automatically charged, exhausted, and pressure maintained through the air circuit system 8.

[0072] In an optional embodiment of the present invention, Figure 1 As shown, a mounting seat 7 is fixedly provided on the inner wall of the housing 1 , and the brake cylinder 6 is fixed on the mounting seat 7 , which facilitates the installation and removal of the brake cylinder 6 during the test and ensures that the brake cylinder 6 is firmly installed in the housing 1 .

[0073] In an optional embodiment of the present invention, Figure 1 , Figure 6 As shown, the wrench assembly 4 includes a first guide bracket 401, a first actuator cylinder 402 and a first drive motor 403. The first guide bracket 401 can be movably connected to the inner wall of the housing 1 along the extension direction of the brake cylinder piston rod 602. The first actuator cylinder 402 is arranged on the first guide bracket 401. The first drive motor 403 is arranged at the end of the piston rod of the first actuator cylinder 402. The output shaft of the first drive motor 403 is connected to the end of the brake cylinder piston rod 602. After the first guide bracket 401 moves to the preset position, the first actuator cylinder 402 can push the first drive motor 403 to move, so that the output shaft of the first drive motor 403 is connected to the end of the brake cylinder piston rod 602, and then the first drive motor 403 is used to adjust the brake cylinder piston rod 602 to move to the test point position.

[0074] Further, such as Figure 1 As shown, a return nut 601 is provided at the end of the brake cylinder piston rod 602, and the return nut 601 is sleeved on the brake cylinder piston rod 602, and the return nut 601 is threadedly connected to the brake cylinder piston rod 602. A block-shaped wrench 405 is provided at the end of the output shaft of the first drive motor 403, and a clamping hole 4051 matching the return nut 601 is opened on the wrench 405. The return nut 601 is embedded in the clamping hole 4051, and the outer wall of the return nut 601 is clamped with the inner wall of the clamping hole 4051. Therefore, the first drive motor 403 drives the return nut 601 to rotate forward and reverse, so that the rotational motion of the return nut 601 can be converted into the linear motion of the brake cylinder piston rod 602, thereby achieving the purpose of adjusting the position of the brake cylinder piston rod 602.

[0075] Furthermore, the return nut 601 may be, but is not limited to, a hexagonal nut, and the snap-in hole 4051 may be, but is not limited to, a hexagonal hole that matches the hexagonal nut.

[0076] Further, such as Figure 6 As shown, a torque sensor 404 is provided on the output shaft of the first driving motor 403, and the signal output end of the torque sensor 404 is electrically connected to the signal receiving end of the controller 9. A displacement sensor 406 is provided on the first guide bracket 401, and the signal output end of the displacement sensor 406 is electrically connected to the signal receiving end of the controller 9. During the detection process, the torque parameters of the brake cylinder piston rod 602 are collected in real time by the torque sensor 404 and uploaded to the controller 9, and the displacement data of the brake cylinder piston rod 602 is collected in real time by the displacement sensor 406 to determine whether the brake cylinder piston rod 602 moves to the test point position, and the displacement data is uploaded to the controller 9 at the same time, which is convenient for data storage and recording. Among them, the controller 9 can be but not limited to a computer.

[0077] Specifically, Figure 1 , Figure 6 As shown, the first guide bracket 401 includes a support plate 4011 and two sliders 4012. The support plate 4011 is a long plate-shaped structure. The two sliders 4012 are fixedly arranged at both ends of the support plate 4011. Guide rails 5 parallel to the brake cylinder piston rod 602 are respectively arranged on the two opposite inner walls of the outer shell 1. The support plate 4011 is located between the two guide rails 5, and the support plate 4011 is perpendicular to the guide rails 5. The two sliders 4012 are respectively slidably arranged on the corresponding guide rails 5 so that the support plate 4011 can slide along the guide rails 5.

[0078] Further, such as Figure 1 , Figure 6As shown, the first guide bracket 401 also includes a supporting plate 407 and two connecting rods 408, the two connecting rods 408 are respectively located on both sides of the first drive motor 403, and one end of the two connecting rods 408 is respectively connected to the bottom of the support plate 4011, and the other ends of the two connecting rods 408 are respectively provided with a clamping block 4081, and the two connecting rods 408 are clamped on the outer wall of the brake cylinder piston rod 602 through the clamping block 4081; the supporting plate 407 can be slidably arranged on the top of the two connecting rods 408, the first actuator cylinder 402 is fixedly arranged on the top of the support plate 4011, the end of the piston rod of the first actuator cylinder 402 is connected to the top surface of the supporting plate 407, the bottom surface of the supporting plate 407 is close to the two opposite edge positions and can slidably contact with the top of the two connecting rods 408, and the first drive motor 403 is arranged in the middle position of the bottom surface of the supporting plate 407. The two connecting rods 408 can further stabilize the connection between the wrench assembly 4 and the brake cylinder piston rod 602 and guide the movement of the brake cylinder piston rod 602, ensuring that the brake cylinder piston rod 602 accurately moves to the test point position; the supporting plate 407 can both support the first actuator cylinder 402 and provide a stable connection to the first drive motor 403.

[0079] In an optional embodiment of the present invention, Figure 1 , Figure 4 , Figure 5 As shown, the force measuring assembly 3 includes a top block 301 and a force sensor 302. The top block 301 is fixedly arranged on the outer wall of the support plate 4011 close to the stopper assembly 2. The force sensor 302 is fixedly clamped between the support plate 4011 and the top block 301. The top block 301 can abut against the stopper assembly 2. During the test, the braking force of the brake cylinder 6 at the test point position is collected through the force sensor 302.

[0080] Further, such as Figures 1 to 5As shown, the stopper assembly 2 includes a second drive motor 201, a lead screw 203, an end plate 204, a pressure block 205 and a compression spring 207. A lead screw nut 208 is sleeved on the lead screw 203, and the lead screw nut 208 is fixed on the housing 1. The output shaft of the second drive motor 201 is connected to one end of the lead screw 203, and a accommodating blind hole 2031 is provided at the other end of the lead screw 203. The end plate 204 is fixedly sealed at the open end of the accommodating blind hole 2031 in the vertical direction. The compression spring 207 and the pressure block 205 are both located in the accommodating blind hole 2031 and are arranged in sequence from the sealed end of the accommodating blind hole 2031 to the open end of the accommodating blind hole 2031. A through hole is provided in the middle position of the end plate 204, and a cylindrical protrusion 2051 is provided on the pressure block 205 at a position opposite to the through hole. The compression spring 207 squeezes the pressure block 205 so that the protrusion The block 2051 passes through the through hole and extends to the outside of the blind hole 2031; a movable switching plate 303 is arranged on the outer wall of the top block 301 near the stop assembly 2, and a receiving groove 3031 is provided on the switching plate 303 at a position opposite to the protrusion 2051. When performing rigid stopping, the position of the switching plate 303 remains unchanged, and the protrusion 2051 is inserted into the receiving groove 3031, so that the end plate 204 abuts against the switching plate 303, realizing the rigid stopping function; when performing the elastic stopping function, the switching plate 303 is moved to a position where the receiving groove 3031 and the protrusion 2051 are staggered, so that the top block 301 abuts against the protrusion 2051, and while the brake cylinder piston rod 602 is stopped, the compression spring 207 is subjected to the pressure of the protrusion 2051 to produce elastic contraction, thereby realizing the elastic stopping function. During the detection process, the rigid stop and the elastic stop can be switched by adjusting the position of the switching plate 303. The end plate 204 cooperates with the pressing block 205 to play the stopping role of the stop block in the prior art.

[0081] Specifically, Figure 4 , Figure 5 As shown, the switching plate 303 is arranged in the vertical direction, the accommodating groove 3031 is opened at the top of the switching plate 303, and a vertically extending long strip-shaped guide hole 3032 is opened at the bottom of the switching plate 303. A limit block 305 can be slidably arranged in the guide hole 3032, and a plurality of bolts 306 are connected between the limit block 305 and the top block 301; a second actuator cylinder 304 is arranged on the top block 301, and a first connecting plate 307 is arranged at the bottom of the switching plate 303, and the piston rod of the second actuator cylinder 304 is vertically arranged and connected to the first connecting plate 307 to drive the switching plate 303 to move vertically. The up and down movement position of the switching plate 303 is controlled by the second actuator cylinder 304. When the switching plate 303 is in the upper position, the protrusion 2051 is inserted into the accommodating groove 3031, and the end plate 204 abuts against the switching plate 303 to realize a rigid stop function; when the switching plate 303 moves down to the lower position, the top block 301 directly abuts against the protrusion 2051 to realize an elastic stop function.

[0082] Furthermore, the control end of the first actuator cylinder 402, the control end of the first drive motor 403, the control end of the second drive motor 201, and the control end of the second actuator cylinder 304 are electrically connected to the control signal output end of the controller 9, respectively, and the signal output end of the force sensor 302 is electrically connected to the signal receiving end of the controller 9. The controller 9 can receive the data collected by the force sensor 302, and the controller 9 can control the working states of the first actuator cylinder 402, the first drive motor 403, the second drive motor 201, and the second actuator cylinder 304, respectively, so as to automatically control the entire working process of the automatic detection device for train brake cylinders of the present invention.

[0083] Further, such as Figure 2 , Figure 3 As shown, a rear seat 206 is further provided in the accommodating blind hole 2031, an outer wall of the rear seat 206 is provided with an outer thread, an inner wall of the accommodating blind hole 2031 is provided with an inner thread, the rear seat 206 and the accommodating blind hole 2031 are connected by threads, a cylindrical first boss 2061 is provided on the rear seat 206 near one end of the pressing block 205, the boss 2051 is located in the middle position of one end of the pressing block 205, and a cylindrical second boss 2052 is provided on the other end of the pressing block 205, one end of the compression spring 207 is sleeved on the first boss 2061 and abuts against the rear seat 206, and the other end of the compression spring 207 is sleeved on the second boss 2051 and abuts against the pressing block 205. By adjusting the position of the rear seat 206 in the blind hole 2031, and then adjusting the depth of the blind hole 2031, the compression degree of the compression spring 207 in the blind hole 2031 can be adjusted to meet the requirements of different elastic stop functions. In addition, the rear seat 206 cooperates with the pressure block 205 to position the compression spring 207 in the blind hole 2031, ensuring that the compression spring 207 can abut against the pressure block 205, and there is always elastic force acting on the pressure block 205, thereby realizing the elastic stop function of the brake cylinder piston rod 602.

[0084] In an optional embodiment of the present invention, Figure 1 , Figure 2 As shown, the stopper assembly 2 further includes a second guide bracket 202 , through which the second drive motor 201 is mounted on the housing 1 , thereby providing a mounting position for the second drive motor 201 .

[0085] Specifically, Figure 2 As shown, the second guide bracket 202 includes a second connecting plate 2022 and two guide rods 2021, the second drive motor 201 is fixed at the middle position of the second connecting plate 2022, the two guide rods 2021 are respectively located on both sides of the second drive motor 201, and one end of the two guide rods 2021 is respectively fixed on the second connecting plate 2022, and the other ends of the two guide rods 2021 are respectively fixed on the outer wall of the shell 1.

[0086] The working process of the automatic detection device for train brake cylinders of the present invention is as follows: install the brake cylinder 6 to be detected at a fixed position in the housing 1, adjust the position of the rear seat 206 in the accommodating blind hole 2031 before testing, and then fix the end plate 204 to the open end of the accommodating blind hole 2031 by bolts, thereby pressing the pressure block 205 and making the protrusion 2051 on the pressure block 205 extend from the through hole on the end plate 204 to the outside of the accommodating blind hole 2031, so that the preload force of the compression spring meets the test requirements; control the second drive motor 201 to run through the controller 9, drive the lead screw to move to the stop position corresponding to the test item point, so as to realize the stop function of the brake cylinder piston rod 602; the stop assembly 2 cooperates with the force measuring assembly 3 to realize the test requirements of rigid stop and elastic stop and the switching between the two. The rigid stop function is: the second actuator cylinder 304 drives the accommodating groove 3031 on the switching plate 303 to be in the upper position of the top block 301 (that is: Figure 4 , Figure 5 303, the top block 301 is staggered with the convex block 2051, and the top block 301 is directly abutted with the convex block 2051 on the pressing block 205. In this process, the direction of the braking force transmission is the force sensor 302, the top block 301, the pressing block 205, the end plate 204 and the lead screw 203 in sequence; the elastic stop function is: the second actuator cylinder 304 drives the accommodating groove 3031 on the switching plate 303 to move downward to the lower position of the top block 301 (that is, the accommodating groove 3031 is staggered with the convex block 2051), and the top block 301 directly abuts with the convex block 2051 on the pressing block 205. In this process, the direction of the braking force transmission is the force sensor 302, the top block 301, the pressing block 205, the compression spring 207, the back seat 206 and the lead screw 203 in sequence. During the entire testing process, the force sensor 302 collects the parameters of the force output by the brake cylinder in the test requirements. In addition, during the test process, the torque sensor 404 collects the torque parameters in the test requirements, and the displacement sensor 406 collects the displacement parameters in the test requirements.

[0087] The characteristics and advantages of the train brake cylinder automatic detection device of the present invention are:

[0088] 1. The degree of automation of the train brake cylinder automatic detection device is greatly improved. During the entire brake cylinder 6 test process, each test point is automatically adjusted and tested. The test process does not require human participation, releasing more than 80% of the labor force, simplifying the test process, and effectively reducing the labor intensity of the staff.

[0089] 2. The train brake cylinder automatic detection device can cover the test range of all brake cylinders, meet the test item points of all domestic models of brake cylinders, and has more complete functions.

[0090] 3. The train brake cylinder automatic detection device can effectively improve the test efficiency. During the test, the brake cylinder piston rod 602 and the stopper position are automatically adjusted, which effectively shortens the test time and improves the efficiency of the brake cylinder 6 manufacturing and maintenance.

[0091] Fourth, the train brake cylinder automatic detection device can effectively improve the factory quality of the brake cylinder 6, eliminate the errors and safety risks caused by human operation, and effectively improve the detection accuracy of the brake cylinder 6.

[0092] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A train brake cylinder automatic detection device, characterized in that: include: A housing (1) in which a brake cylinder (6) to be tested is fixedly arranged; A wrench assembly (4) is movably arranged inside the housing (1) along the extension direction of the brake cylinder piston rod (602); an end of the wrench assembly (4) close to the brake cylinder piston rod (602) is connected to the end of the brake cylinder piston rod (602) to drive the brake cylinder piston rod (602) to move to a test point position; A force measuring assembly (3) arranged on the end of the wrench assembly (4) away from the brake cylinder piston rod (602) to collect the braking force of the brake cylinder piston rod (602) at the test point position; A stopper assembly (2) is movably arranged on the housing (1) along the extension direction of the brake cylinder piston rod (602); when the wrench assembly (4) drives the brake cylinder piston rod (602) to move to the test point position, the stopper assembly (2) abuts against the force measuring assembly (3) to stop the moving position of the brake cylinder piston rod (602); The wrench assembly (4) comprises a first guide bracket (401), a first actuator cylinder (402) and a first drive motor (403); the first guide bracket (401) is movably connected to the inner wall of the housing (1) along the extension direction of the brake cylinder piston rod (602); the first actuator cylinder (402) is arranged on the first guide bracket (401); the first drive motor (403) is arranged at the end of the piston rod of the first actuator cylinder (402); and the output shaft of the first drive motor (403) is connected to the end of the brake cylinder piston rod (602); A torque sensor (404) is provided on the output shaft of the first drive motor (403), and a signal output end of the torque sensor (404) is electrically connected to a signal receiving end of the controller (9); The first guide bracket (401) comprises a support plate (4011) and two sliders (4012), the two sliders (4012) are respectively arranged at two ends of the support plate (4011), guide rails (5) parallel to the brake cylinder piston rod (602) are respectively arranged on two opposite inner walls of the housing (1), the support plate (4011) is located between the two guide rails (5), and the support plate (4011) is perpendicular to the guide rails (5), and the two sliders (4012) are respectively slidably arranged on the corresponding guide rails (5), so that the support plate (4011) can slide along the guide rails (5); The force measuring assembly (3) comprises a top block (301) and a force sensor (302); the top block (301) is fixedly arranged on an outer wall of the support plate (4011) on a side close to the stop assembly (2); the force sensor (302) is fixedly clamped between the support plate (4011) and the top block (301); and the top block (301) can abut against the stop assembly (2); The stopper assembly (2) comprises a second drive motor (201), a lead screw (203), an end plate (204), a pressure block (205) and a compression spring (207); a lead screw nut (208) is sleeved on the lead screw (203), and the lead screw nut (208) is fixed to the housing (1); an output shaft of the second drive motor (201) is connected to one end of the lead screw (203); a receiving blind hole (2031) is provided at the other end of the lead screw (203); and the end plate (204) is sealed in the receiving blind hole (2031). the opening end of the accommodating blind hole (2031), the compression spring (207) and the compression block (205) are both located in the accommodating blind hole (2031) and are arranged in sequence from the sealed end of the accommodating blind hole (2031) to the opening end of the accommodating blind hole (2031), the end plate (204) is provided with a through hole, a protrusion (2051) is arranged on the compression block (205) at a position opposite to the through hole, and the compression spring (207) presses the compression block (205) so that the protrusion (2051) passes through the through hole and extends to the outside of the accommodating blind hole (2031); A movable switching plate (303) is provided on the outer wall of the top block (301) on a side close to the stop assembly (2); a receiving groove (3031) is provided on the switching plate (303) at a position opposite to the protrusion (2051); the protrusion (2051) can be inserted into the receiving groove (3031) so that the end plate (204) and the switching plate (303) abut against each other; the switching plate (303) is moved to a position where the receiving groove (3031) and the protrusion (2051) are offset so that the top block (301) and the protrusion (2051) abut against each other.

2. The train brake cylinder automatic detection device according to claim 1, characterized in that: A return nut (601) is provided at the end of the brake cylinder piston rod (602), and a block-shaped wrench (405) is provided at the end of the output shaft of the first drive motor (403). The wrench (405) is provided with a clamping hole (4051) that matches the return nut (601), and the return nut (601) is embedded in the clamping hole (4051), and the outer wall of the return nut (601) is clamped with the inner wall of the clamping hole (4051).

3. The train brake cylinder automatic detection device according to claim 1, characterized in that: The first guide bracket (401) is provided with a displacement sensor (406), and a signal output end of the displacement sensor (406) is electrically connected to a signal receiving end of the controller (9).

4. The train brake cylinder automatic detection device according to claim 1, characterized in that: The first guide bracket (401) further comprises a supporting plate (407) and two connecting rods (408), wherein the two connecting rods (408) are respectively located on both sides of the first drive motor (403), and one end of the two connecting rods (408) is respectively connected to the supporting plate (4011), and the other end of the two connecting rods (408) is respectively clamped on the outer wall of the brake cylinder piston rod (602); The support plate (407) is slidably disposed on the top of the two connecting rods (408), the first actuator cylinder (402) is disposed on the top of the support plate (4011), the end of the piston rod of the first actuator cylinder (402) is connected to the top surface of the support plate (407), the bottom surface of the support plate (407) is slidably contacted with the top of the two connecting rods (408) near two opposite edge positions, and the first drive motor (403) is disposed in the middle position of the bottom surface of the support plate (407).

5. The train brake cylinder automatic detection device according to claim 1, characterized in that: The switching plate (303) is arranged in a vertical direction, the containing groove (3031) is provided at the top of the switching plate (303), a vertically extending long strip-shaped guide hole (3032) is provided at the bottom of the switching plate (303), a limit block (305) is slidably provided in the guide hole (3032), and a bolt (306) is connected between the limit block (305) and the top block (301); A second actuating cylinder (304) is disposed on the top block (301), a first connecting plate (307) is disposed at the bottom of the switching plate (303), and a piston rod of the second actuating cylinder (304) is vertically disposed and connected to the first connecting plate (307) to drive the switching plate (303) to move vertically.

6. The train brake cylinder automatic detection device according to claim 5, characterized in that: The control end of the first actuator cylinder (402), the control end of the first drive motor (403), the control end of the second drive motor (201) and the control end of the second actuator cylinder (304) are respectively electrically connected to the control signal output end of the controller (9), and the signal output end of the force sensor (302) is electrically connected to the signal receiving end of the controller (9).

7. The train brake cylinder automatic detection device according to claim 1, characterized in that: A rear seat (206) is also provided in the accommodating blind hole (2031), the outer wall of the rear seat (206) is threadedly connected to the inner wall of the accommodating blind hole (2031), a first boss (2061) is provided on the rear seat (206), the boss (2051) is located in the middle position of one end of the pressing block (205), and a second boss (2052) is provided at the other end of the pressing block (205), and two ends of the compression spring (207) are respectively sleeved on the first boss (2061) and the boss (2051) and are respectively in contact with the rear seat (206) and the pressing block (205).

8. The train brake cylinder automatic detection device according to claim 1, characterized in that: The stopper assembly (2) further comprises a second guide bracket (202) providing a mounting position for the second drive motor (201); The second guide bracket (202) comprises a second connecting plate (2022) and two guide rods (2021); the second drive motor (201) is fixed to a middle position of the second connecting plate (2022); the two guide rods (2021) are respectively located on two sides of the second drive motor (201); one end of the two guide rods (2021) is respectively fixed to the second connecting plate (2022); and the other ends of the two guide rods (2021) are respectively fixed to an outer wall of the housing (1).

9. The train brake cylinder automatic detection device according to claim 1, characterized in that: An air circuit system (8) is provided inside the housing (1), the air circuit system (8) is connected to the brake cylinder (6), and a control end of the air circuit system (8) is electrically connected to a control signal output end of a controller (9).

10. The train brake cylinder automatic detection device according to claim 1, characterized in that: A mounting seat (7) is fixedly provided on the inner wall of the housing (1), and the brake cylinder (6) is fixed on the mounting seat (7).

Images