A brake electromagnet brake fatigue test bench

Abstract

The present invention discloses a braking fatigue test bench for a braking electromagnet, comprising a base, a guide plate slidably connected to the base, a driving device for driving the guide plate to slide on the base, and a braking electromagnet fixing seat for fixing the braking electromagnet, wherein the braking electromagnet fixing seat is connected to the base, the driving device is arranged on the base, the braking electromagnet is energized after being fixed to the braking electromagnet fixing seat, the braking electromagnet is adsorbed on the guide plate, the driving device drives the guide plate to slide on the base, and the braking electromagnet reacts on the guide plate to prevent the guide plate from sliding on the base to implement a braking fatigue test on the braking electromagnet. The braking electromagnet braking fatigue test bench can perform fatigue tests on the performance of the braking rod and the wear plate of the braking electromagnet, is simple to operate, and has high precision, and solves the problem that the braking fatigue test of the braking electromagnet of the high-speed maglev train is difficult to perform and has low precision.

Description

Technical Field

[0001] The invention belongs to the field of brake fatigue test benches, and in particular relates to a brake electromagnet brake fatigue test bench. Background Art

[0002] The maglev train is a modern high-tech rail transit tool that uses electromagnetic force to achieve contactless suspension and guidance between the train and the track, and then uses the electromagnetic force generated by the linear motor to pull the train. Due to its advantages such as high speed, smooth and comfortable operation, easy control, low noise, high environmental performance, low operation, maintenance and energy consumption costs, it is increasingly valued by countries around the world.

[0003] The brake electromagnet of a maglev train is responsible for braking and deceleration in emergency situations. To ensure the product's performance during braking, the brake electromagnet needs to undergo an X-axis braking fatigue test to verify the performance of its brake rod and wear plate. However, there is currently no simple and effective method for verifying the braking performance of the brake electromagnet.

[0004] In view of the above problems, the present invention is proposed. Summary of the invention

[0005] In view of the various deficiencies of the prior art, in order to solve the above problems, a brake electromagnet brake fatigue test bench is now proposed. To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A braking electromagnet braking fatigue test bench comprises a base, a guide plate slidably connected to the base, a driving device for driving the guide plate to slide on the base and a braking electromagnet fixing seat for fixing the braking electromagnet, wherein the braking electromagnet fixing seat is connected to the base, the driving device is arranged on the base, the braking electromagnet is fixedly connected to the braking electromagnet fixing seat and then energized, the braking electromagnet is adsorbed on the guide plate, the driving device drives the guide plate to slide on the base, and the braking electromagnet reacts to the guide plate to prevent the guide plate from sliding on the base to implement a braking fatigue test on the braking electromagnet.

[0007] Preferably, the brake electromagnet includes an electromagnet, a wear plate arranged at the bottom of the electromagnet and a brake rod arranged at the top of the electromagnet, the brake electromagnet fixing seat includes a support seat connected to the base, a crossbeam connected to the support seat and adjustable in front and back position along the sliding direction of the guide plate, and a rod fixing seat connected to the crossbeam and adjustable in up and down position for fixing the brake rod, and the crossbeam is horizontally arranged above the guide plate.

[0008] Preferably, the number of the brake electromagnet fixing seats is two, and the two brake electromagnet fixing seats are respectively arranged on the bases at both ends of the guide plate along its sliding direction, the two ends of the brake rod are respectively hinged on the two brake electromagnet fixing seats, the number of the support seats of the brake electromagnet fixing seat is two, and the two support seats are respectively arranged on the bases on both sides of the length direction of the guide plate, and the two ends of the crossbeam are respectively connected to the two support seats.

[0009] Preferably, the pull rod fixing seat includes a fixing plate and two oppositely arranged first hinged ears arranged on the fixing plate, and a first strip hole for adjusting the upper and lower positions of the pull rod fixing seat is arranged on the fixing plate or the cross beam, and the fixing plate and the cross beam are fixedly connected by a first bolt, and the first bolt passes through the first strip hole, and the two ends of the brake rod are respectively hinged at the first hinged ears of the two pull rod fixing seats.

[0010] Preferably, the first strip hole is arranged on the fixed plate, the first strip hole is a long hole in the up and down direction, the cross beam is provided with a mounting hole, and a reinforced first reinforcing rib plate is arranged between the first hinged ear and the fixed plate. The first reinforcing rib plate is respectively located on the two opposite sides of the two first hinged ears, so as to achieve not affecting the installation of the brake rod, but also being able to reinforce the stability of the connection between the first hinged ear and the fixed plate.

[0011] Preferably, beam supports are provided at both ends of the beam, and the beam is connected to the support seat through the beam supports. A second strip hole for adjusting the front and rear position of the beam in the sliding direction of the guide plate is provided on the beam support or the support seat, and the beam support and the support seat are fixedly connected by a second bolt, and the second bolt passes through the second strip hole.

[0012] Preferably, the crossbeam support includes a lower connecting plate and a second reinforcing rib plate arranged on the lower connecting plate, the crossbeam is fixedly connected to the lower connecting plate, the two adjacent sides of the reinforcing rib plate are respectively connected to the crossbeam and the lower connecting plate, the second reinforcing rib plates are set to 4, two of which are set in a group on both sides of the crossbeam, and the two groups of second reinforcing rib plates are respectively set at both ends of the lower connecting plate. The two groups of second reinforcing rib plates strengthen the stability of the connection between the crossbeam and the lower connecting plate on the one hand, and increase the aesthetics of the test bench on the other hand. The second strip hole is set on the lower connecting plate, the second long strip hole is set to 4, which are respectively set at the four corners of the lower connecting plate, and the four lower connecting plates are evenly distributed on both sides of the crossbeam, and the second reinforcing rib plate is set on the outside of the second long strip hole. This distribution method realizes that the crossbeam is firmly connected to the support seat through the crossbeam support, and the length direction of the second long strip hole is the same as the sliding direction of the guide plate to realize the front and rear position of the crossbeam in the sliding direction of the guide plate.

[0013] Preferably, the length of the first strip hole is 10 mm, so that the brake electromagnet can have a 10 mm adjustment range in the vertical direction, and the length of the second strip hole is 10 mm, so that the brake electromagnet can have a 10 mm adjustment range in the longitudinal direction (X direction).

[0014] Preferably, the support seat includes a hollow square support and an upper connecting plate. The square supports of the two support seats are arranged opposite to each other, the upper connecting plate is arranged on the upper part of the square support, and the lower part of the square support is connected to the base. The square support and the upper connecting plate are integrally formed. The upper connecting plate and the lower connecting plate are connected by a second bolt to realize the connection between the crossbeam support and the support seat. The hollow square support can play a stable supporting role and save the use of materials and the weight of the overall test bench. The square support is provided with a third reinforcing rib at both ends along the sliding direction of the guide plate to further strengthen the stability of the support seat connected to the base.

[0015] Preferably, the guide plate is slidably connected to the base via a plurality of mutually parallel guide rails, the guide rails are fixedly connected to the base, a plurality of groups of sliders are provided at the lower end of the guide plate corresponding to the plurality of guide rails, and the guide plate is slidably connected to the guide rails via the sliders.

[0016] Preferably, the guide rails are provided in two numbers, and the two guide rails are distributed below the guide plate according to the center of gravity of the brake electromagnet so that the forces on the two guide rails are the same.

[0017] Preferably, the guide plate is a Q235B steel plate, and the surface roughness of the guide plate is Ra20.

[0018] Preferably, the driving device is arranged on a base at one end of the guide plate along its sliding direction, and the driving device includes a hydraulic cylinder, a hydraulic cylinder mounting seat for mounting the hydraulic cylinder, and a connecting seat for connecting the piston rod of the hydraulic cylinder to the guide plate, the hydraulic cylinder mounting seat is connected to the base, the hydraulic cylinder is fixedly connected to the hydraulic cylinder mounting seat, one end of the connecting seat is hinged to the piston rod of the hydraulic cylinder, and the other end is connected to the guide plate.

[0019] Preferably, the connecting seat includes a push plate and two second hinged ears and two clamping plates respectively arranged on two opposite sides of the push plate, the two second hinged ears are arranged opposite to each other for hinged connection with the piston rod of the hydraulic cylinder, the two clamping plates are arranged opposite to each other and a space for the guide plate to be placed is left between the two clamping plates, the middle part of the guide plate is placed between the two clamping plates and the end part is against the push plate.

[0020] Preferably, the hydraulic cylinder is hinged to the connecting seat through a sleeve, the outer end of the hydraulic cylinder piston rod is set as an external thread structure, one end of the sleeve is set with an internal thread mounting hole, and the other end is set as a hinge structure cooperating with two second hinged ears, and the sleeve is threadedly connected to the piston rod of the hydraulic cylinder.

[0021] Preferably, the middle part of the guide plate is placed between the two clamping plates and the end part is fixedly connected by bolts and nuts after being abutted against the push plate. There are two bolts, which are symmetrically arranged on both sides of the center line of the clamping plates. This arrangement enables the guide plate to be firmly connected to the driving device, and the force at each connection is uniform, so that the driving device can stably transfer the thrust to the guide plate.

[0022] Preferably, a fourth reinforcing rib plate is provided on the clamping plate, and the fourth reinforcing rib plate is connected to the push plate to enhance the stability of the clamping plate when connected to the push plate.

[0023] Preferably, the pressure output by the hydraulic cylinder is greater than 60KN.

[0024] Beneficial effects:

[0025] 1. The brake electromagnet brake fatigue test bench provided by the present invention can perform fatigue tests on the performance of the brake rod and wear plate of the brake electromagnet. It is easy to operate and has high precision, which solves the problem that the brake fatigue test of the brake electromagnet of the high-speed maglev train is difficult to conduct and has low precision.

[0026] 2. In the brake electromagnet brake fatigue test bench provided by the present invention, the brake electromagnet is horizontally placed on the guide plate on the test bench, and only the brake rod is fixed without other fixed points, thereby ensuring that only the brake rod is subjected to force during the test, thereby ensuring the accuracy of the test, and when the brake electromagnet is not energized, the brake electromagnet is in a relatively free state, and is not subject to the squeezing force and downward pressure between the two brake rod mounting seats. In addition to the force exerted on the brake electromagnet itself, there is no additional force applied to the brake electromagnet, thereby ensuring that the brake rod is not affected by other external forces during the brake fatigue test of the brake electromagnet, thereby further ensuring the accuracy of the brake fatigue test.

[0027] 3. The guide plates in the brake electromagnet brake fatigue test bench provided by the present invention are installed with linear guide rails parallel to each other. When hydraulic pressure is applied, it can be ensured that the force transmission direction is in a linear direction (X direction), and the installation method of the slider guide rail has a small friction force that is almost negligible, ensuring that the hydraulic pressure on the guide plate is converted into the friction force between the wear plate and the guide plate to the greatest extent, and transmitted to the brake rod, thereby ensuring the accuracy of the brake fatigue test.

[0028] 4. The brake electromagnet brake fatigue test bench provided by the present invention uses a hydraulic cylinder to apply hydraulic pressure to the guide plate, and the maximum pressure can reach 60KN. Because the guide plate is firmly adsorbed after the brake electromagnet is energized, the guide plate transmits the force to the brake rod, which simulates the force transmission during the braking process of the actual vehicle. It can effectively test the performance of the brake rod and wear plate of the brake electromagnet, and ensure the accuracy of the brake fatigue test, which has effective reference value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the brake electromagnet brake fatigue test bench of the present invention.

[0030] Figure 2 The present invention is a schematic structural diagram of a brake fatigue test bench equipped with a brake electromagnet.

[0031] Figure 3 It is a structural schematic diagram of the base of the present invention.

[0032] Figure 4 It is a structural schematic diagram of the brake electromagnet fixing seat of the present invention.

[0033] Figure 5 It is a schematic structural diagram of the driving device of the present invention.

[0034] In the figure: 1. base; 2. brake electromagnet fixing seat; 21. square support; 22. third reinforcing rib; 23. second reinforcing rib plate; 24. lower connecting plate; 241. second strip hole; 25. fixing plate; 251. first strip hole; 26. first hinged ear; 27. first reinforcing rib plate; 28. crossbeam; 3. driving device; 31. hydraulic cylinder mounting seat; 32. hydraulic cylinder; 33. sleeve; 34. push plate; 35. second hinged ear; 36. fourth reinforcing rib plate; 37. clamping plate; 4. brake electromagnet; 41. brake pull rod; 42. wear plate; 5. guide plate; 6. guide rail; 61. slider. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making any creative work should all fall within the scope of protection of this application.

[0036] like Figure 1 and 2 As shown, the brake electromagnet 4 includes an electromagnet, a wear plate 42 arranged at the lower part of the electromagnet and a brake rod 41 arranged at the upper part of the electromagnet.

[0037] The braking fatigue test bench for the braking electromagnet 4 provided in this specific embodiment includes a base 1, a guide plate 5 slidably connected to the base 1, a driving device 3 for driving the guide plate 5 to slide on the base 1 and a braking electromagnet fixing seat 2 for fixing the braking electromagnet 4. The braking electromagnet fixing seat 2 is connected to the base 1, and the driving device 3 is arranged on the base 1. After the braking electromagnet 4 is fixedly connected to the braking electromagnet fixing seat 2 and energized, the braking electromagnet 4 is adsorbed on the guide plate 5, and the driving device 3 drives the guide plate 5 to slide on the base 1. The driving device 3 drives the guide plate 5 to give the guide plate 5 a thrust. Since the braking electromagnet 4 is firmly adsorbed on the guide plate 5 and the braking electromagnet 4 is fixed on the braking electromagnet fixing seat 2, the braking electromagnet 4 gives the guide plate 5 a reaction force to prevent it from sliding on the base 1. The thrust of the driving device 3 driving the guide plate 5 is transmitted to the braking rod 41 of the braking electromagnet 4 through the guide plate 5. Since the braking rod 41 is fixed, the performance of the braking rod 41 and the wear plate 42 of the braking electromagnet 4 is verified.

[0038] like Figure 4 As shown, the brake electromagnet fixing seat 2 includes a support seat connected to the base 1, a beam 28 connected to the support seat and adjustable in front and rear positions along the sliding direction of the guide plate 5, and a rod fixing seat connected to the beam 28 and adjustable in up and down positions for fixing the brake rod 41. The support seats are provided in two numbers, and the two support seats are respectively arranged on the base 1 on both sides of the guide plate 5 along its sliding direction. The beam 28 is horizontally arranged above the guide plate 5, and the two ends of the beam 28 are respectively connected to the two support seats.

[0039] The pull rod fixing seat includes a fixing plate 25 and two first hinged ears 26 arranged oppositely on the fixing plate 25. A first strip hole 251 for adjusting the upper and lower positions of the pull rod fixing seat is arranged on the fixing plate 25 or the cross beam 28. In the present specific embodiment, the first strip hole 251 is arranged on the fixing plate 25. The first strip hole 251 is a long strip hole in the up and down directions. A mounting hole is arranged on the cross beam 28. The fixing plate 25 and the cross beam 28 are fixedly connected by a first bolt. The first bolt passes through the first strip hole 251 and the mounting hole to fix the fixing plate 25 and the cross beam 28 together. The setting of the first strip hole 251 can realize that the pull rod fixing seat can be adjusted up and down within a certain range in the vertical direction, so that the brake electromagnet 4 is easier to install and is not subject to the downward pressure of the pull rod fixing seat after installation.

[0040] Furthermore, as a preference of this specific embodiment, the length of the first strip hole 251 is 10 mm, so that the brake electromagnet 4 can have a 10 mm adjustment range in the vertical direction. The setting of the upper and lower position adjustment range is sufficient to meet the installation requirements of the brake electromagnet 4. If the length of the first strip hole 251 is too large, the vertical height of the fixed plate 25 will be increased, which will affect the appearance of the test bench and cause unnecessary waste, increasing the weight of the test bench. Similarly, if the length of the first strip hole 251 is too small, the adjustment range of the pull rod fixing seat in the vertical direction will be insufficient to meet the installation requirements of the brake electromagnet 4, which will give the brake electromagnet 4 additional pressure, which is not conducive to the accuracy of the verification.

[0041] Furthermore, a reinforced first reinforcing rib plate 27 is provided between the first hinged ear 26 and the fixed plate 25. The first reinforcing rib plate 27 is respectively located on two opposite sides of the two first hinged ears 26. This arrangement does not affect the installation of the brake rod 41, and can reinforce the stability of the connection between the first hinged ear 26 and the fixed plate 25.

[0042] The support seat includes a hollow square support 21 and an upper connecting plate. The square supports 21 of the two support seats are arranged opposite to each other. The upper connecting plate is arranged on the upper part of the square support 21. The lower part of the square support 21 is connected to the base 1. The square support 21 and the upper connecting plate are integrally formed. The hollow square support 21 can not only play a stable supporting role, but also save the use of materials and reduce the weight of the overall test bench. The square support 21 is provided with a third reinforcing rib 22 at both ends along the sliding direction of the guide plate 5. The third reinforcing rib 22 is respectively connected to the base 1 and the square support 21, and is used to further strengthen the stability of the support seat connected to the base 1.

[0043] Both ends of the crossbeam 28 are provided with crossbeam 28 supports, and the crossbeam 28 is connected to the support seat through the crossbeam 28 supports. The crossbeam 28 support or the support seat is provided with a second strip hole 241 for adjusting the front and rear position of the crossbeam 28 in the sliding direction of the guide plate 5. In the present specific embodiment, the second strip hole 241 is provided on the crossbeam 28 support, and a bolt mounting hole is provided on the support seat. The crossbeam 28 support and the support seat are fixedly connected by the second bolt, and the second bolt passes through the second strip hole 241 and the bolt mounting hole to fix the crossbeam 28 support and the support seat together. The setting of the second strip hole 241 can realize that the pull rod fixing seat can be adjusted forward and backward within a certain range in the horizontal direction (the sliding direction of the guide plate 5, the X direction), so that the brake electromagnet 4 is easier to install.

[0044] The support of the crossbeam 28 includes a lower connecting plate 24 and a second reinforcing rib plate 23 arranged on the lower connecting plate 24. The crossbeam 28 is fixedly connected to the lower connecting plate 24. The adjacent sides of the reinforcing rib plate are respectively connected to the crossbeam 28 and the lower connecting plate 24. The second reinforcing rib plates 23 are provided in four numbers, two of which are arranged in a group on both sides of the crossbeam 28 opposite to each other. The two groups of second reinforcing rib plates 23 are respectively arranged at both ends of the lower connecting plate 24. The two groups of second reinforcing rib plates 23, on the one hand, strengthen the stability of the connection between the crossbeam 28 and the lower connecting plate 24, and on the other hand, increase the aesthetics of the test bench. The second strip hole 241 is arranged on the lower connecting plate 24, and the second long strip hole is set to 4, which are respectively arranged at the four corners of the lower connecting plate 24, and the four lower connecting plates 24 are evenly divided on both sides of the cross beam 28. The second reinforcing rib plate 23 is arranged on the outer side of the second long strip hole. This distribution method realizes that the cross beam 28 is firmly connected to the support seat through the cross beam 28 support. The length direction of the second long strip hole is the same as the sliding direction of the guide plate 5 to realize the adjustment of the front and rear position of the cross beam 28 in the sliding direction of the guide plate 5.

[0045] Furthermore, as a preference of this specific embodiment, the length of the second strip hole 241 is 10 mm, so that the brake electromagnet 4 can have a 10 mm adjustment range in the longitudinal direction (X direction). The setting of the longitudinal position adjustment range is sufficient to meet the installation requirements of the brake electromagnet 4. If the length of the second strip hole 241 is too large, the longitudinal length of the lower mounting plate will increase, which will affect the appearance of the test bench and cause unnecessary waste, increasing the weight of the test bench. Similarly, if the length of the second strip hole 241 is too small, the longitudinal adjustment range of the crossbeam 28 support will not be sufficient to meet the installation requirements of the brake electromagnet 4, which is not conducive to the accuracy of the verification.

[0046] Furthermore, the bolt mounting holes on the support seat are arranged on the upper connecting plate, and the upper connecting plate and the lower connecting plate 24 are connected by a second bolt to realize the connection between the cross beam 28 support and the support seat.

[0047] There are two brake electromagnet fixing seats 2, and the two brake electromagnet fixing seats 2 are respectively arranged on the base 1 at both ends of the guide plate 5 along its sliding direction, and the two ends of the brake rod 41 are respectively hinged to the first hinge ears 26 of the two brake electromagnet fixing seats 2 to realize the hinge between the two ends of the brake rod 41 and the two rod fixing seats.

[0048] The position of the pull rod fixing seat on the cross beam 28 is adjustable up and down, and the cross beam 28 is adjustable forward and backward on the support seat along the sliding direction of the guide plate 5, so that the brake electromagnet 4 can be easily installed between the two brake electromagnet fixing seats 2. After the brake electromagnet 4 is installed between the two brake electromagnet fixing seats 2, when the brake electromagnet 4 is not energized, the brake electromagnet 4 is in a relatively free state and is not subject to the squeezing force and downward pressure between the two brake pull rod 41 mounting seats. In addition to the force it is subjected to, the brake electromagnet 4 is not subjected to any other force added, which ensures that during the brake fatigue test of the brake electromagnet 4, the brake pull rod 41 is not affected by other external forces, thereby ensuring the accuracy of the brake fatigue test.

[0049] When the brake electromagnet 4 is conducting a brake fatigue test, a large thrust needs to be applied to the guide plate 5. The guide plate 5 transfers the thrust to the brake rod 41, and the brake rod 41 transfers the force to the brake electromagnet fixing seat 2. Therefore, the stability of the brake electromagnet fixing seat 2 is very important. The structures of the various parts of the brake electromagnet fixing seat 2 and the settings of the first reinforcing rib plate 27, the second reinforcing rib plate 23 and the third reinforcing rib 22, and the various components cooperate with each other to achieve the stability of the brake electromagnet fixing seat 2, so that when the brake electromagnet 4 is conducting a brake fatigue test, the brake electromagnet fixing seat 2 is stable and does not deform, which provides the necessary conditions for the brake electromagnet 4 to smoothly conduct a brake fatigue test and prolongs the service life of the test bench.

[0050] The guide plate 5 is slidably connected to the base 1 through a plurality of mutually parallel guide rails 6, and the guide rails 6 are fixedly connected to the base 1. Figure 3 As shown, the base 1 is a frame structure, the guide rail 6 is a linear guide rail 6, and the lower end of the guide plate 5 is provided with multiple groups of sliders 61 corresponding to the multiple guide rails 6, and the guide plate 5 is slidably connected to the guide rail 6 through the sliders 61. As a preferred embodiment of this specific embodiment, the guide rail 6 is set to 2, and the 2 guide rails 6 are distributed below the guide plate 5 according to the center of gravity of the brake electromagnet 4 to achieve the same force on the 2 guide rails 6. Three sliders 61 are set on each guide rail 6, and the sliders 61 connected to the same guide rail 6 are evenly distributed at the lower part of the guide plate 5. This setting realizes the balanced force of each slider 61, and the brake electromagnet 4 is placed on the guide plate 5 without deviation, and the guide rail 6 is a linear guide rail 6. The direction of the driving force of the driving device 3 is the same as that of the linear guide 6, which ensures that the hydraulic pressure applied to the guide plate 5 can be transmitted in the longitudinal direction (X direction), and can also ensure that the force applied to the guide plate 5 will not be lost, thereby ensuring the accuracy of the test data and the safety of the test.

[0051] Furthermore, the guide plate 5 is a Q235B steel plate, and the surface roughness of the guide plate 5 is Ra20. This setting simulates the conditions during the braking process of an actual vehicle, making the experimental results more reliable.

[0052] like Figure 5As shown, the driving device 3 is arranged on the base 1 at one end of the guide plate 5 along its sliding direction, and the driving device 3 includes a hydraulic cylinder 32, a hydraulic cylinder mounting seat 31 for mounting the hydraulic cylinder 32, and a connecting seat for connecting the piston rod of the hydraulic cylinder 32 to the guide plate 5. The hydraulic cylinder mounting seat 31 is connected to the base 1, the hydraulic cylinder 32 is fixedly connected to the hydraulic cylinder mounting seat 31, one end of the connecting seat is hinged to the piston rod of the hydraulic cylinder 32, and the other end is connected to the guide plate 5.

[0053] The connecting seat includes a push plate 34 and two second hinged ears 35 and two clamps 37 respectively arranged on two opposite sides of the push plate 34. The two second hinged ears 35 are arranged oppositely for hinged connection with the piston rod of the hydraulic cylinder 32. The two clamps 37 are arranged oppositely and a space for the guide plate 5 is left between the two clamps 37. The middle part of the guide plate 5 is placed between the two clamps 37 and the end part is against the push plate 34 and then fixedly connected by bolts and nuts. The bolts are arranged in two numbers and symmetrically arranged on both sides of the center line of the clamps 37. This arrangement enables the guide plate 5 to be stably connected to the driving device 3, and the force at each connection is uniform, so that the driving device 3 can stably transmit the thrust to the guide plate 5. The setting of the connecting seat can stably connect the hydraulic cylinder 32 with the guide plate 5 on the one hand, and increase the force contact surface of the guide plate 5 on the other hand, which can effectively prevent the damage of the piston rod of the hydraulic cylinder 32 or the deformation of the guide plate 5.

[0054] Furthermore, a fourth reinforcing rib plate 36 is provided on the clamping plate 37 , and the fourth reinforcing rib plate 36 is connected to the push plate 34 to enhance the stability of the clamping plate 37 connected to the push plate 34 .

[0055] Furthermore, the hydraulic cylinder 32 is hinged to the connecting seat through the sleeve 33. The outer end of the piston rod of the hydraulic cylinder 32 is set to an external thread structure. One end of the sleeve 33 is set with an internal thread mounting hole, and the other end is set to a hinge structure that cooperates with two second hinge ears 35. The sleeve 33 is threadedly connected to the piston rod of the hydraulic cylinder 32. This setting realizes the application of different hydraulic cylinders 32. The connection structure is stable. The sleeve 33 and the connecting seat are processed as standard parts for easy assembly.

[0056] Furthermore, the pressure output by the hydraulic cylinder 32 is greater than 60KN. This setting uses the hydraulic cylinder 32 to apply hydraulic pressure to the guide plate 5, and the maximum pressure can reach 60KN. Because the guide plate 5 is firmly adsorbed after the brake electromagnet 4 is energized, the guide plate 5 transmits force to the brake rod 41, which simulates the transmission of force during the braking process of the actual vehicle. It can effectively test the performance of the brake rod 41 and the wear plate 42 of the brake electromagnet 4, and ensure the accuracy of the brake fatigue test, which has effective reference value.

[0057] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0058] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A brake electromagnet brake fatigue test bench, characterized in that: It includes a base, a guide plate slidably connected to the base, a driving device for driving the guide plate to slide on the base, and a brake electromagnet fixing seat for fixing a brake electromagnet, the brake electromagnet fixing seat is connected to the base, the driving device is arranged on the base, the brake electromagnet is fixedly connected to the brake electromagnet fixing seat and then energized, the brake electromagnet is adsorbed on the guide plate, the driving device drives the guide plate to slide on the base, the brake electromagnet reacts on the guide plate to prevent the guide plate from sliding on the base to implement a brake fatigue test on the brake electromagnet; The brake electromagnet includes an electromagnet, a wear plate arranged at the bottom of the electromagnet and a brake rod arranged at the top of the electromagnet. The brake electromagnet fixing seat includes a support seat connected to the base, a crossbeam connected to the support seat and adjustable in front and back position along the sliding direction of the guide plate, and a rod fixing seat connected to the crossbeam and adjustable in up and down position for fixing the brake rod. The crossbeam is horizontally arranged above the guide plate.

2. The brake electromagnet brake fatigue test bench according to claim 1 is characterized in that: The number of the brake electromagnet fixing seats is two, and the two brake electromagnet fixing seats are respectively arranged on the bases at the two ends of the guide plate along its sliding direction, the two ends of the brake pull rod are respectively hinged on the two brake electromagnet fixing seats, the number of the support seats of the brake electromagnet fixing seat is two, and the two support seats are respectively arranged on the bases on both sides of the length direction of the guide plate, and the two ends of the crossbeam are respectively connected to the two support seats.

3. The brake electromagnet brake fatigue test bench according to claim 2 is characterized in that: The pull rod fixing seat includes a fixing plate and two first hinged ears arranged opposite to each other on the fixing plate. A first strip hole for adjusting the upper and lower positions of the pull rod fixing seat is arranged on the fixing plate or the cross beam. The fixing plate and the cross beam are fixedly connected by a first bolt. The first bolt passes through the first strip hole. The two ends of the brake pull rod are respectively hinged at the first hinged ears of the two pull rod fixing seats.

4. The brake electromagnet brake fatigue test bench according to claim 1, characterized in that: Both ends of the beam are provided with beam supports, and the beam is connected to the support seat through the beam supports. The beam support or the support seat is provided with a second strip hole for adjusting the front and rear position of the beam in the sliding direction of the guide plate. The beam support and the support seat are fixedly connected by a second bolt, and the second bolt passes through the second strip hole.

5. The brake electromagnet brake fatigue test bench according to claim 1, characterized in that: The guide plate is slidably connected to the base via a plurality of mutually parallel guide rails, the guide rails are fixedly connected to the base, a plurality of sets of sliders are arranged at the lower end of the guide plate corresponding to the plurality of guide rails, and the guide plate is slidably connected to the guide rails via the sliders.

6. The brake electromagnet brake fatigue test bench according to claim 5, characterized in that: The guide rails are provided with two, and the two guide rails are distributed below the guide plate according to the center of gravity of the brake electromagnet so that the forces on the two guide rails are the same.

7. The brake electromagnet brake fatigue test bench according to claim 1, characterized in that: The guide plate is a Q235B steel plate, and the surface roughness of the guide plate is Ra20.

8. The brake electromagnet brake fatigue test bench according to claim 1, characterized in that: The driving device is arranged on a base at one end of the guide plate along its sliding direction, and the driving device includes a hydraulic cylinder, a hydraulic cylinder mounting seat for mounting the hydraulic cylinder, and a connecting seat for connecting the piston rod of the hydraulic cylinder to the guide plate. The hydraulic cylinder mounting seat is connected to the base, and the hydraulic cylinder is fixedly connected to the hydraulic cylinder mounting seat. One end of the connecting seat is hinged to the piston rod of the hydraulic cylinder, and the other end is connected to the guide plate.

9. The brake electromagnet brake fatigue test bench according to claim 8, characterized in that: The connecting seat includes a push plate and two second hinged ears and two clamping plates respectively arranged on two opposite sides of the push plate. The two second hinged ears are arranged opposite to each other for hinged connection with the piston rod of the hydraulic cylinder. The two clamping plates are arranged opposite to each other and a space for the guide plate to be placed is left between the two clamping plates. The middle part of the guide plate is placed between the two clamping plates and the end part is against the push plate.

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