VEMS-based rail transit vehicle pantograph wear detection device

Abstract

The invention relates to the technical field of pantograph carbon slide strip detection, and discloses a VEMS-based rail transit vehicle pantograph wear detection device, which comprises an operation table, a carbon slide strip, and a test assembly which is arranged at the top of the operation table and inside the operation table and is used for detection, the test assembly is composed of a driving part used for providing power, a clamping part used for clamping a carbon sliding strip and a simulation cable, according to the VEMS-based rail transit vehicle pantograph wear detection device, through the arrangement of the test assembly and the driven part, after the movable plate drives the clamping plate to move to fix the carbon sliding strip, the limiting rod can be controlled to release limiting of the threaded block, and the detection accuracy is improved. At the moment, even if the screw rotates, only the threaded block is driven to rotate, and the moving plate cannot move, so that the situation that clamping force applied to the carbon sliding strip is too large, consequently, the carbon sliding strip deforms, and the accuracy of subsequent detection results is affected is avoided, workers do not need to pay attention to operation, operation is easy, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of pantograph carbon slide bar detection, and in particular to a VEMS rail transit vehicle pantograph wear detection device. Background Art

[0002] In order to ensure the safe operation of the subway, the measurement system for rail transit also needs to be improved and matched. The existing VEMS rail transit vehicle intelligent detection device is composed of modules such as wheel profile detection device, wheel damage detection device, pantograph wear detection device, etc., which can monitor the various operating parameters of the subway train online in real time when the train passes. For a long time, the measurement and calibration of VEMS devices have been controlled by foreign suppliers and enterprises. The calibration systems and methods in related fields have not been able to achieve domestic substitution, and the reliability of the measurement data is questionable. In order to verify the reliability of the measurement data, the standard carbon slider samples are usually tested and inspected by the pantograph carbon slider wear detection equipment, and then the new standard carbon slider samples are handed over to the subway to be installed on the pantograph for VEMS device detection. The accuracy of the sensor is determined by comparing the data of the two.

[0003] At present, the pantograph carbon slider wear detection device needs to use a clamp to fix the carbon slider. Since the carbon slider is a relatively fragile component, the staff needs to be very careful when fixing it. The clamping force applied should not be too large or too small. If the force is too large, the carbon slider may be damaged, causing cracks or even breakage. In addition, it is necessary to ensure that the pressure on the carbon slider is uniform. The staff needs to adjust the position of the carbon slider to ensure that the carbon slider is in the center during the test. This makes the overall test process cumbersome, inefficient, and not convenient enough. For this reason, we propose a VEMS rail transit vehicle pantograph wear detection device. Summary of the invention

[0004] The object of the present invention is to provide a VEMS rail transit vehicle pantograph wear detection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a VEMS rail transit vehicle pantograph wear detection device, comprising an operating table and a carbon slide bar;

[0006] Test components set on top of and inside the operating table for testing;

[0007] The test assembly is composed of a driving part for providing power, a clamping part for clamping the carbon slide bar, and a simulation cable;

[0008] The driving part is arranged inside and on the top of the operating table, and the clamping part is arranged on the driving part. The clamping part is composed of a control motor, a screw, a threaded block and a moving plate. The moving plate and the threaded block are provided with a driven part for preventing excessive clamping force from being applied to the carbon slide bar.

[0009] The control motor and the screw rod are provided with a resisting part for quickly releasing the clamping state.

[0010] Preferably, the driving part includes a forward and reverse motor, a gear, a rack and a base. The base passes through the top of the operating table and is slidably connected to the operating table. The forward and reverse motor is fixed to the surface of the base. The output shaft of the forward and reverse motor is fixed to the gear. The gear is meshed with the rack. The rack is fixed to the inner wall of the operating table. By slightly pushing the base to the right, the gear and the rack are brought into meshing state. By starting the forward and reverse motor, the base can be controlled to move left and right on the operating table, and the carbon slide bar can be controlled to move left and right in cooperation with the clamping part. The friction between the carbon slide bar and the simulated cable can realize the simulation of the pantograph movement. When the carbon slide bar is subjected to friction, the wear of the carbon slide bar can be detected.

[0011] Preferably, the control motor is fixed on the right side of the base, the output shaft of the control motor passes through the base and is rotatably connected to the base, the screw is rotatably installed on the inner wall of the base, the screw is threadedly connected to the threaded block, the threaded block passes through the movable plate and is rotatably connected to the movable plate, the movable plate passes through the top of the base and is slidably connected to the base, two opposite sections of threads are arranged on the screw, and two groups of threaded blocks, movable plates and driven parts are each arranged, and the two groups of threaded blocks, movable plates and driven parts are symmetrically arranged on the screw. When the control motor is started and the control motor drives the screw to rotate through the interference part, the screw controls the threaded block and the movable plate to move through the driven part, and the two groups of movable plates can realize the tightening of the carbon slide bar.

[0012] Preferably, the driven part includes a clamping plate, a push rod is fixed on one side of the clamping plate close to the moving plate, the push rod penetrates the moving plate and is slidably connected to the moving plate, a connecting spring is fixed on the inner wall of the moving plate, one end of the connecting spring is away from the moving plate and is fixed to the push rod, an end of the push rod is away from the clamping plate and is fixed to a vertical rod, the bottom of the vertical rod is hinged with a locking rod, a spring sheet is fixed on the top of the locking rod, one end of the spring sheet is away from the locking rod and is fixed to the vertical rod, a fixing block is fixed on the bottom of the locking rod, under the resistance of the fixing block, the locking rod can only swing upward at the position hinged with the vertical rod, an L-shaped rod is slidably installed on the inner wall of the moving plate, and the top of the L-shaped rod A resistance spring is fixed, and one end of the resistance spring away from the L-shaped rod is fixed to the inner wall of the movable plate. The bottom of the L-shaped rod is hinged with a support rod, and one end of the support rod away from the L-shaped rod is hinged to the top of the limit rod. The limit rod is slidably installed on the inner wall of the movable plate, and an annular clamping tooth is fixed on the surface of the threaded block. A pressure plate is slidably installed on the inner wall of the movable plate. A through hole is opened on the surface of the pressure plate, and the limit rod can be clamped into the annular clamping tooth on the surface of the threaded block to limit the threaded block, so that when the control motor drives the screw rod to rotate, the threaded block cannot rotate with the screw rod, thereby realizing the control of the movable plate to move, and the clamping rod can resist the bottom of the pressure plate to limit the pressure plate. Specifically, seven groups of through holes, splints, push rods, connecting springs, vertical rods, positioning rods, spring pieces and fixing blocks are provided. The seven groups of through holes, splints, push rods, connecting springs, vertical rods, positioning rods, spring pieces and fixing blocks are arranged in an array on the moving plate. When the moving plate fixes the carbon slide bar, the splint will contact the carbon slide bar. At this time, the moving plate continues to move until the splint and the moving plate are fitted to complete the fixation of the carbon slide bar. At this time, the splint moves with the push rod and the vertical rod, and the vertical rod moves with the positioning rod, so that the positioning rod can pass through the through holes and no longer interfere with the bottom of the pressure plate to limit the pressure plate. Only when the seven groups of splints drive the seven positioning rods to release the limit on the pressure plate at the same time, the pressure plate can be It can move downward under the action of its own gravity. This step ensures better fixation of the carbon slide bar and avoids uneven force on the carbon slide bar, which may cause damage to the carbon slide bar. When the pressure plate is no longer limited, the pressure plate moves downward under the action of its own gravity, and the pressure plate contacts the L-shaped rod, pushing the L-shaped rod to move downward. The L-shaped rod pushes the limiting rod to move to the side away from the threaded block through the support rod. At this time, the limiting rod is no longer engaged with the annular tooth, thereby releasing the limit on the threaded block. At this time, even if the screw continues to rotate, it will only drive the threaded block to rotate synchronously, and the moving plate cannot move, thereby avoiding excessive clamping force on the carbon slide bar, causing deformation of the carbon slide bar, and affecting the accuracy of subsequent test results.

[0013] Preferably, a circular hole is opened at the position where the movable plate is penetrated by the threaded block, and a pawl is arranged on the inner side of the circular hole, and a ratchet is arranged on the surface of the threaded block. When the control motor drives the screw to rotate, and controls the threaded block and the movable plate to move toward the side close to the carbon slide bar, the screw rotates clockwise during this process, and the ratchet on the surface of the threaded block cannot be stuck on the pawl on the inner side of the circular hole. When the control motor drives the screw to rotate, and controls the threaded block and the movable plate to move toward the side away from the carbon slide bar, the screw rotates counterclockwise during this process, and the ratchet on the surface of the threaded block is stuck on the pawl on the inner side of the circular hole, so that when the screw rotates counterclockwise, even if the limit rod is not stuck in the annular clamping tooth, the threaded block cannot rotate counterclockwise with the screw, thereby controlling the movable plate to move toward the side away from the carbon slide bar, thereby loosening the carbon slide bar.

[0014] Preferably, the resistance part includes a spiral spring, one end of the spiral spring is fixed to the surface of the screw, the other end of the spiral spring is fixed to the inner wall of the base, the screw is penetrated by the resistance rod and is slidably connected with the resistance rod, the resistance rod passes through the base, a return spring is fixed to the side of the screw, one end of the return spring away from the screw is fixed to the surface of the resistance rod, the resistance rod passes through the rotating sleeve, one end of the rotating sleeve away from the resistance rod is fixed to the output shaft of the control motor, a limiting tooth is fixed on the inner wall of the rotating sleeve, a ring is rotatably installed on the inner wall of the rotating sleeve, a connecting rod is hinged on the surface of the resistance rod, and the connecting rod The end away from the interference rod is hinged with an insertion rod, which is slidably mounted on the surface of the ring and inserted into the limit tooth through the insertion rod, so that the control motor can drive the screw to rotate through the rotating sleeve, the insertion rod, the connecting rod and the interference rod. When the base is pushed to the initial position, the interference rod can be abutted on the operating table, so that the interference rod is retracted into the screw. At this time, the interference rod pulls the insertion rod through the connecting rod, so that the insertion rod is separated from the limit tooth, thereby achieving separation from the rotating sleeve. At this time, under the action of the volute spring, the screw rotates counterclockwise, so that the moving plate can be controlled to loosen the fixation of the carbon slide bar with the splint. It is simple and fast, and effectively improves the overall work efficiency.

[0015] Preferably, a guide plate is fixed on the top of the operating table, and an inclined guide groove is provided on the side of the guide plate close to the base. A guide rod is fixed on the surface of the pressure plate, and the guide rod passes through the movable plate. When the base is fully reset, the guide rod can be inserted into the guide groove and gradually move upward during the process, and the guide rod moves upward with the pressure plate. At this time, the pressure plate abuts on the locking rod, so that the locking rod swings upward at the position hinged with the vertical rod. When the locking rod completely passes through the through hole, the locking rod is reset under the action of the spring sheet, so that it can abut against the bottom of the pressure plate to limit the pressure plate, thereby completing the reset.

[0016] Preferably, a positioning auxiliary mechanism is provided on the top of the base, and the positioning auxiliary mechanism includes a push plate, which passes through the top of the base and is slidably connected to the base. A tension spring is fixed on the inner wall of the base, and the end of the tension spring away from the base is fixed to the push plate. The left side of the base is penetrated by a connecting rod and is slidably connected to the connecting rod. When the base moves slightly to the right by a certain distance, the connecting rod is no longer resisted by the operating table. Under the action of the tension spring, the push plate can move toward the center of the base, thereby pushing the carbon slide bar placed on the top of the base, and cooperating with the clamping part to fix the carbon slide bar to the center position, and cooperating with the simulation cable to better test the carbon slide bar.

[0017] Compared with the prior art, the present invention provides a VEMS rail transit vehicle pantograph wear detection device, which has the following beneficial effects:

[0018] 1. The VEMS rail transit vehicle pantograph wear detection device, through the set test components and driven parts, when the moving plate moves with the clamping plate to fix the carbon slide bar, the limit rod can be controlled to release the limit on the threaded block. At this time, even if the screw rotates, it will only drive the threaded block to rotate, and will not cause the moving plate to move, thereby avoiding excessive clamping force on the carbon slide bar, causing the carbon slide bar to deform and affect the accuracy of subsequent test results. The staff does not need to pay much attention to the operation, the operation is simple, and the work efficiency is effectively improved.

[0019] 2. The VEMS rail vehicle pantograph wear detection device, through the set follower and positioning auxiliary mechanism, when the base starts to move to the right, the push plate can push the carbon slide bar, so that the carbon slide bar is in the center of the base, and then the carbon slide bar is further fixed by the clamping plate and the moving plate. The carbon slide bar can be ensured to be in the center state without the staff manually adjusting the position of the carbon slide bar, which is easy to operate and improves work efficiency.

[0020] 3. The VEMS rail vehicle pantograph wear detection device, through the set resistance part and test assembly, when the detection is completed, only need to push the base to the left to control the moving plate and the clamping plate to loosen the fixation of the carbon slide bar. The staff only need to remove the carbon slide bar, which is easy to operate and further improves the work efficiency.

[0021] 4. The VEMS rail vehicle pantograph wear detection device has seven sets of clamps. When the clamps fix the carbon slide bar, the pressure plate can move downward under its own gravity only when the seven sets of clamps drive the seven locking rods to release the limit on the pressure plate at the same time. This step ensures better fixation of the carbon slide bar and avoids uneven force on the carbon slide bar, which causes damage to the carbon slide bar. It does not require manual operation by the staff and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a front view structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional front view structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the driving part of the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0026] Figure 5 It is a schematic diagram of the connection structure of the abutment part, the clamping part, the driven part and the positioning auxiliary mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the positioning auxiliary mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the clamping part of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection structure between the conflicting part and the clamping part of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the rotating sleeve of the present invention;

[0031] Fig.10 It is a schematic diagram of the connection structure of the movable plate, the threaded block, the ratchet wheel and the pawl of the present invention;

[0032] Fig.11 This is a schematic diagram of the guide groove structure on the guide plate of the present invention;

[0033] Fig.12 It is a schematic diagram of the structure of the driven part of the present invention;

[0034] Fig.13 It is a schematic diagram of the connection structure of the L-shaped rod, the limiting rod, the threaded block and the annular latch teeth of the present invention;

[0035] Fig.14 It is a schematic diagram of the connection structure of the vertical rod and the locking rod of the present invention.

[0036] In the figure: 1, operating table; 2, resistance part; 21, scroll spring; 22, resistance rod; 23, return spring; 24, rotating sleeve; 25, limit teeth; 26, ring; 27, connecting rod; 28, insert rod; 3, clamping part; 31, control motor; 32, screw rod; 33, thread block; 34, moving plate; 4, driven part; 41, clamping plate; 42, push rod; 43, connecting spring; 44, vertical rod; 45, pressure plate; 46, through hole; 47, clamping rod; 48 , spring piece; 49, fixing block; 410, L-shaped rod; 411, resistance spring; 412, support rod; 413, limit rod; 414, annular clamping tooth; 5, positioning auxiliary mechanism; 51, push plate; 52, tension spring; 53, connecting rod; 6, carbon slide; 7, driving part; 71, forward and reverse motor; 72, gear; 73, rack; 74, base; 8, simulation cable; 9, round hole; 10, pawl; 11, ratchet; 12, guide plate; 13, guide rod. DETAILED DESCRIPTION

[0037] like Figure 1-Figure 14 As shown, the present invention provides a technical solution: a VEMS rail transit vehicle pantograph wear detection device, comprising an operating table 1 and a carbon slide bar 6. A test assembly for detection is arranged on the top and inside of the operating table 1. The test assembly consists of a driving part 7 for providing power, a clamping part 3 for clamping the carbon slide bar 6 and a simulation cable 8. The driving part 7 is arranged inside and on the top of the operating table 1. The clamping part 3 is arranged on the driving part 7. The clamping part 3 consists of a control motor 31, a screw 32, a threaded block 33 and a moving plate 34. The moving plate 34 and the threaded block 33 are provided with a driven part 4 for avoiding excessive clamping force on the carbon slide bar 6. The control motor 31 and the screw 32 are provided with a resistance part 2 for quickly releasing the clamping state.

[0038] The driving part 7 includes a forward and reverse motor 71, a gear 72, a rack 73 and a base 74. The base 74 passes through the top of the operating platform 1 and is slidably connected to the operating platform 1. The forward and reverse motor 71 is fixed on the surface of the base 74. The output shaft of the forward and reverse motor 71 is fixed to the gear 72. The gear 72 is meshed with the rack 73. The rack 73 is fixed on the inner wall of the operating platform 1. By slightly pushing the base 74 to move to the right, the gear 72 and the rack 73 are brought into meshing state. By starting the forward and reverse motor 71, the base 74 can be controlled to move left and right on the operating platform 1. The clamping part 3 controls the carbon slide 6 to move left and right. The carbon slide 6 is rubbed with the simulated cable 8 to simulate the movement of the pantograph. The carbon slide 6 is rubbed, thereby detecting the wear of the carbon slide 6.

[0039] The control motor 31 is fixed on the right side of the base 74, and the output shaft of the control motor 31 passes through the base 74 and is rotatably connected to the base 74. The screw 32 is rotatably installed on the inner wall of the base 74, and the screw 32 is threadedly connected to the threaded block 33. The threaded block 33 passes through the moving plate 34 and is rotatably connected to the moving plate 34. The moving plate 34 passes through the top of the base 74 and is slidably connected to the base 74.

[0040] Specifically, two opposite sections of threads are provided on the screw 32, and two groups of thread blocks 33, movable plates 34 and driven parts 4 are provided. The two groups of thread blocks 33, movable plates 34 and driven parts 4 are symmetrically arranged on the screw 32. When the control motor 31 is started and the control motor 31 drives the screw 32 to rotate through the interference part 2, the screw 32 controls the movement of the thread blocks 33 and the movable plates 34 through the driven part 4, and the two groups of movable plates 34 can realize the tightening of the carbon slide bar 6.

[0041] The driven part 4 includes a clamping plate 41, a push rod 42 is fixed to one side of the clamping plate 41 close to the moving plate 34, the push rod 42 penetrates the moving plate 34 and is slidably connected to the moving plate 34, a connecting spring 43 is fixed to the inner wall of the moving plate 34, the end of the connecting spring 43 away from the moving plate 34 is fixed to the push rod 42, the end of the push rod 42 away from the clamping plate 41 is fixed to the vertical rod 44, the bottom of the vertical rod 44 is hinged with a locking rod 47, the top of the locking rod 47 is fixed with a spring piece 48, the end of the spring piece 48 away from the locking rod 47 is fixed to the vertical rod 44, the bottom of the locking rod 47 is fixed with a fixing block 49, under the interference of the fixing block 49, the locking rod 47 can only swing upward at the position hinged with the vertical rod 44, an L-shaped rod 410 is slidably installed on the inner wall of the moving plate 34, L A resistance spring 411 is fixed to the top of the L-shaped rod 410, and the end of the resistance spring 411 away from the L-shaped rod 410 is fixed to the inner wall of the movable plate 34. A support rod 412 is hinged at the bottom of the L-shaped rod 410, and the end of the support rod 412 away from the L-shaped rod 410 is hinged to the top of the limiting rod 413. The limiting rod 413 is slidably installed on the inner wall of the movable plate 34, and an annular clamping tooth 414 is fixed on the surface of the threaded block 33. A pressure plate 45 is slidably installed on the inner wall of the movable plate 34. A through hole 46 is opened on the surface of the pressure plate 45. The limiting rod 413 can be stuck in the annular clamping tooth 414 on the surface of the threaded block 33 to limit the threaded block 33, so that when the control motor 31 drives the screw rod 32 to rotate, the threaded block 33 cannot rotate with the screw rod 32, thereby realizing Now control the movement of the movable plate 34, the locking rod 47 can contact the bottom of the pressure plate 45 to limit the pressure plate 45, wherein specifically, the through hole 46, the splint 41, the push rod 42, the connecting spring 43, the vertical rod 44, the locking rod 47, the spring piece 48, and the fixing block 49 are all provided with seven groups, and the seven groups of through holes 46, the splint 41, the push rod 42, the connecting spring 43, the vertical rod 44, the locking rod 47, the spring piece 48, and the fixing block 49 are all arranged in an array on the movable plate 34. When the movable plate 34 fixes the carbon slide 6, the splint 41 will contact the carbon slide 6. At this time, the movable plate 34 continues to move until the splint 41 fits with the movable plate 34 to complete the fixation of the carbon slide 6. At this time, the splint 41 moves with the push rod 42 and the vertical rod 44, and the vertical rod 44 moves with The locking rod 47 moves so that the locking rod 47 can pass through the through hole 46 and no longer interfere with the bottom of the pressure plate 45 to limit the pressure plate 45. Only when the seven groups of clamps 41 drive the seven locking rods 47 to release the limit of the pressure plate 45 at the same time, the pressure plate 45 can move downward under the action of its own gravity. This step ensures better fixation of the carbon slide 6 and avoids uneven force on the carbon slide 6, which may cause damage to the carbon slide 6. When the pressure plate 45 is no longer limited, the pressure plate 45 moves downward under the action of its own gravity, and the pressure plate 45 interferes with the L-shaped rod 410, pushing the L-shaped rod 410 to move downward. The L-shaped rod 410 pushes the limiting rod 413 to move to the side away from the threaded block 33 through the support rod 412. At this time, the limiting rod 413 is no longer engaged with the annular tooth 414.Thus, the limit of the thread block 33 is released. At this time, even if the screw rod 32 continues to rotate, it will only drive the thread block 33 to rotate synchronously, and the moving plate 34 cannot move, thereby avoiding excessive clamping force on the carbon slide 6, causing the carbon slide 6 to deform and affect the accuracy of subsequent detection results. The staff only needs to turn off the control motor 31, and the volute spring 21 will not be over-wound.

[0042] A circular hole 9 is provided at the position where the movable plate 34 is penetrated by the threaded block 33, a ratchet 10 is provided on the inner side of the circular hole 9, and a ratchet 11 is provided on the surface of the threaded block 33. When the control motor 31 drives the screw 32 to rotate, the control threaded block 33 and the movable plate 34 move toward the side close to the carbon slide bar 6, the screw 32 rotates clockwise during this process, and the ratchet 11 on the surface of the threaded block 33 cannot be stuck on the ratchet 10 on the inner side of the circular hole 9. When the control motor 31 drives the screw 32 to rotate, the control When the threaded block 33 and the movable plate 34 move toward the side away from the carbon slide bar 6, the screw 32 rotates counterclockwise during this process, and the ratchet 11 on the surface of the threaded block 33 is stuck on the pawl 10 on the inner side of the circular hole 9, so that when the screw 32 rotates counterclockwise, even if the limit rod 413 is not stuck in the annular tooth 414, the threaded block 33 cannot rotate counterclockwise with the screw 32, so that the movable plate 34 can be controlled to move toward the side away from the carbon slide bar 6, thereby loosening the carbon slide bar 6.

[0043] The resistance part 2 includes a spiral spring 21, one end of which is fixed to the surface of the screw rod 32, and the other end of the spiral spring 21 is fixed to the inner wall of the base 74. The screw rod 32 is penetrated by the resistance rod 22 and is slidably connected with the resistance rod 22. The resistance rod 22 passes through the base 74, and a return spring 23 is fixed to the side of the screw rod 32. The end of the return spring 23 away from the screw rod 32 is fixed to the surface of the resistance rod 22. The resistance rod 22 penetrates the rotating sleeve 24, and the end of the rotating sleeve 24 away from the resistance rod 22 is fixed to the output shaft of the control motor 31. A limiting tooth 25 is fixed on the inner wall of the rotating sleeve 24, and a ring 26 is rotatably installed on the inner wall of the rotating sleeve 24. A connecting rod 27 is hinged on the surface of the resistance rod 22, and the end of the connecting rod 27 away from the resistance rod 22 is hinged The insert rod 28 is slidably installed on the surface of the ring 26, and the insert rod 28 is inserted into the limit tooth 25, so that the control motor 31 can drive the screw rod 32 to rotate through the rotating sleeve 24, the insert rod 28, the connecting rod 27 and the contact rod 22. When the base 74 is pushed to the initial position, the contact rod 22 can contact the operating table 1, so that the contact rod 22 is retracted into the screw rod 32. At this time, the contact rod 22 pulls the insert rod 28 through the connecting rod 27, so that the insert rod 28 is separated from the limit tooth 25, thereby realizing the disconnection from the rotating sleeve 24. At this time, under the action of the volute spring 21, the screw rod 32 rotates counterclockwise, which can control the moving plate 34 to loosen the fixation of the splint 41 to the carbon slide bar 6. It is simple and fast, and effectively improves the overall work efficiency.

[0044] A guide plate 12 is fixed to the top of the operating table 1, and an inclined guide groove is provided on one side of the guide plate 12 close to the base 74. A guide rod 13 is fixed to the surface of the pressure plate 45, and the guide rod 13 passes through the movable plate 34. When the base 74 is fully reset, the guide rod 13 can be inserted into the guide groove and gradually move upward during the process. The guide rod 13 moves upward with the pressure plate 45. At this time, the pressure plate 45 abuts against the locking rod 47, so that the locking rod 47 swings upward at the position hinged with the vertical rod 44. After the locking rod 47 completely passes through the through hole 46, the locking rod 47 is reset under the action of the spring piece 48, so that it can abut against the bottom of the pressure plate 45 to limit the pressure plate 45, thereby completing the reset.

[0045] A positioning auxiliary mechanism 5 is provided on the top of the base 74, and the positioning auxiliary mechanism 5 includes a push plate 51, which passes through the top of the base 74 and is slidably connected to the base 74. A tension spring 52 is fixed on the inner wall of the base 74, and the end of the tension spring 52 away from the base 74 is fixed to the push plate 51, and the left side of the base 74 is penetrated by the connecting rod 53 and is slidably connected to the connecting rod 53. When the base 74 moves slightly to the right by a certain distance, the connecting rod 53 is no longer resisted by the operating table 1. Under the action of the tension spring 52, the push plate 51 can move toward the center of the base 74, thereby pushing the carbon slide bar 6 placed on the top of the base 74, and cooperating with the clamping part 3 to fix the carbon slide bar 6 to the center position, and cooperating with the simulation cable 8 to better test the carbon slide bar 6.

[0046] Based on the above implementation mode, first push the base 74 to the left so that the connecting rod 53 is abutted by the operating table 1, so that the push plate 51 is away from the center of the base 74, and the standard carbon slide bar 6 sample is placed on the top of the base 74, and the base 74 is pushed slightly to the right so that the push plate 51 pushes the carbon slide bar 6 so that the carbon slide bar 6 is in the center area of ​​the base 74. At this time, start the control motor 31. At this time, since the interference rod 22 is not abutted, the control motor 31 can drive the screw rod 32 to rotate by rotating the rotating sleeve 24, the insert rod 28, the connecting rod 27 and the interference rod 22. At this time, the limit rod 413 is stuck in the annular tooth 414, and the threaded block 33 cannot rotate, thereby controlling the moving plates 34 to be close to each other and fixing the carbon slide bar 6.

[0047] When the movable plate 34 fixes the carbon slide bar 6, the clamping plate 41 will contact the carbon slide bar 6. At this time, the movable plate 34 continues to move until the clamping plate 41 fits with the movable plate 34 to complete the fixation of the carbon slide bar 6. At this time, the clamping plate 41 moves with the push rod 42 and the vertical rod 44, and the vertical rod 44 moves with the positioning rod 47, so that the positioning rod 47 can pass through the through hole 46 and no longer interfere with the bottom of the pressure plate 45 to limit the pressure plate 45. Only when the seven groups of clamping plates 41 drive the seven positioning rods 47 to release the limit on the pressure plate 45 at the same time, the pressure plate 45 can move downward under the action of its own gravity. This step ensures better fixation of the carbon slide bar 6 and avoids uneven force on the carbon slide bar 6. The carbon slide bar 6 is damaged. When the pressure plate 45 is no longer limited, the pressure plate 45 moves downward under the action of its own gravity. The pressure plate 45 contacts the L-shaped rod 410, pushing the L-shaped rod 410 to move downward. The L-shaped rod 410 pushes the limiting rod 413 to move to the side away from the threaded block 33 through the support rod 412. At this time, the limiting rod 413 is no longer engaged with the annular tooth 414, thereby releasing the limit on the threaded block 33. At this time, even if the screw rod 32 continues to rotate, it will only drive the threaded block 33 to rotate synchronously, and the moving plate 34 cannot move, thereby avoiding excessive clamping force on the carbon slide bar 6, causing the carbon slide bar 6 to deform, affecting the accuracy of subsequent detection results.

[0048] After the fixation is completed, the forward and reverse motor 71 is started to drive the base 74 to move back and forth, and the carbon slide bar 6 and the simulated cable 8 rub back and forth. When the simulated pantograph moves, the carbon slide bar 6 is rubbed, thereby detecting the wear of the carbon slide bar 6.

[0049] After the detection is completed, the base 74 is pulled to the leftmost initial position, the connecting rod 53 is abutted, and the connecting rod 53 abuts on the push plate 51, pushing the push plate 51 away from the center of the base 74, and at the same time, the guide rod 13 gradually moves upward by being inserted into the guide groove, and the guide rod 13 moves upward with the pressure plate 45. At this time, the pressure plate 45 abuts on the locking rod 47, so that the locking rod 47 swings upward at the position hinged with the vertical rod 44. When the locking rod 47 completely passes through the through hole 46, the locking rod 47 is reset under the action of the spring piece 48, so that it can abut on the bottom of the pressure plate 45 to limit the pressure plate 45, completing the reset.

[0050] The abutment rod 22 abuts against the operating table 1, so that the abutment rod 22 retracts into the screw rod 32. At this time, the abutment rod 22 pulls the insertion rod 28 through the connecting rod 27, so that the insertion rod 28 is separated from the limiting tooth 25, thereby achieving separation from the connection with the rotating sleeve 24. At this time, under the action of the spiral spring 21, the screw rod 32 rotates counterclockwise, and the moving plate 34 can be controlled to loosen the fixation of the splint 41 to the carbon slide bar 6. It is simple and fast, and effectively improves the overall work efficiency.

[0051] The carbon slide bar 6 that has been worn out is removed and sent to the laboratory for partition calibration. Then a new standard carbon slide bar 6 sample is sent to the subway to be installed on the pantograph for VEMS device testing. The accuracy of the sensor is determined by comparing the data from the two.

[0052] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A VEMS-based rail transit vehicle pantograph wear detection device, comprising an operating console (1) and a carbon slide bar (6); A test component arranged on the top and inside of the operating table (1) for testing; The test assembly is composed of a driving part (7) for providing power, a clamping part (3) for clamping the carbon slide bar (6), and a simulation cable (8); Features: The driving part (7) is arranged inside and on the top of the operating table (1), and the clamping part (3) is arranged on the driving part (7). The clamping part (3) is composed of a control motor (31), a screw rod (32), a threaded block (33) and a moving plate (34). The moving plate (34) and the threaded block (33) are provided with a driven part (4) for preventing an excessive clamping force from being applied to the carbon slide bar (6); The control motor (31) and the screw rod (32) are provided with a resisting portion (2) for quickly releasing the clamping state.

2. The VEMS rail transit vehicle pantograph wear detection device according to claim 1, characterized in that: The driving part (7) comprises a forward and reverse motor (71), a gear (72), a rack (73) and a base (74); the base (74) penetrates the top of the operating table (1) and is slidably connected to the operating table (1); the forward and reverse motor (71) is fixed on the surface of the base (74); the output shaft of the forward and reverse motor (71) is fixed to the gear (72); the gear (72) is meshed with the rack (73); and the rack (73) is fixed on the inner wall of the operating table (1).

3. The VEMS rail transit vehicle pantograph wear detection device according to claim 2, characterized in that: The control motor (31) is fixed on the right side of the base (74); the output shaft of the control motor (31) passes through the base (74) and is rotatably connected to the base (74); the screw rod (32) is rotatably mounted on the inner wall of the base (74); the screw rod (32) is threadably connected to the threaded block (33); the threaded block (33) passes through the movable plate (34) and is rotatably connected to the movable plate (34); the movable plate (34) passes through the top of the base (74) and is slidably connected to the base (74).

4. The VEMS rail transit vehicle pantograph wear detection device according to claim 3 is characterized in that: The driven part (4) comprises a clamping plate (41), a push rod (42) is fixed on one side of the clamping plate (41) close to the moving plate (34), the push rod (42) penetrates the moving plate (34) and is slidably connected to the moving plate (34), a connecting spring (43) is fixed on the inner wall of the moving plate (34), one end of the connecting spring (43) away from the moving plate (34) is fixed to the push rod (42), one end of the push rod (42) away from the clamping plate (41) is fixed to a vertical rod (44), a locking rod (47) is hinged at the bottom of the vertical rod (44), a spring sheet (48) is fixed at the top of the locking rod (47), one end of the spring sheet (48) away from the locking rod (47) is fixed to the vertical rod (44), and a fixing block is fixed at the bottom of the locking rod (47). (49), an L-shaped rod (410) is slidably mounted on the inner wall of the movable plate (34), a resisting spring (411) is fixed on the top of the L-shaped rod (410), and one end of the resisting spring (411) away from the L-shaped rod (410) is fixed on the inner wall of the movable plate (34), a support rod (412) is hinged at the bottom of the L-shaped rod (410), and one end of the support rod (412) away from the L-shaped rod (410) is hinged on the top of a limiting rod (413), and the limiting rod (413) is slidably mounted on the inner wall of the movable plate (34), and an annular latch (414) is fixed on the surface of the threaded block (33), and a pressure plate (45) is slidably mounted on the inner wall of the movable plate (34), and a through hole (46) is opened on the surface of the pressure plate (45).

5. The VEMS rail transit vehicle pantograph wear detection device according to claim 3 is characterized in that: A circular hole (9) is provided at the position where the movable plate (34) is penetrated by the threaded block (33), a ratchet (10) is provided on the inner side of the circular hole (9), and a ratchet (11) is provided on the surface of the threaded block (33).

6. The VEMS rail transit vehicle pantograph wear detection device according to claim 3 is characterized in that: The abutment portion (2) comprises a spiral spring (21), one end of the spiral spring (21) is fixed to the surface of the screw rod (32), the other end of the spiral spring (21) is fixed to the inner wall of the base (74), the screw rod (32) is penetrated by the abutment rod (22) and is slidably connected to the abutment rod (22), the abutment rod (22) passes through the base (74), a return spring (23) is fixed to the side of the screw rod (32), and one end of the return spring (23) away from the screw rod (32) is fixed to the surface of the return rod (22), The resistance rod (22) passes through the rotating sleeve (24); one end of the rotating sleeve (24) away from the resistance rod (22) is fixed to the output shaft of the control motor (31); a limiting tooth (25) is fixed on the inner wall of the rotating sleeve (24); a circular ring (26) is rotatably mounted on the inner wall of the rotating sleeve (24); a connecting rod (27) is hinged on the surface of the resistance rod (22); an insert rod (28) is hinged on the end of the connecting rod (27) away from the resistance rod (22); and the insert rod (28) is slidably mounted on the surface of the circular ring (26).

7. The VEMS rail transit vehicle pantograph wear detection device according to claim 4, characterized in that: A guide plate (12) is fixed on the top of the operating table (1), and an inclined guide groove is provided on one side of the guide plate (12) close to the base (74). A guide rod (13) is fixed on the surface of the pressure plate (45), and the guide rod (13) passes through the movable plate (34).

8. The VEMS rail transit vehicle pantograph wear detection device according to claim 2, characterized in that: A positioning auxiliary mechanism (5) is arranged on the top of the base (74), and the positioning auxiliary mechanism (5) includes a push plate (51), and the push plate (51) passes through the top of the base (74) and is slidably connected to the base (74). A tension spring (52) is fixed on the inner wall of the base (74), and one end of the tension spring (52) away from the base (74) is fixed to the push plate (51), and the left side of the base (74) is penetrated by a connecting rod (53) and is slidably connected to the connecting rod (53).

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