Device and method for auxiliary detection of on-orbit train traction motor bearing

Abstract

The invention relates to a device and method for auxiliary detection of an on-track train traction motor bearing, the device comprises a control box, a mobile platform and a mounting platform, the mobile platform is movably fixed on the mounting platform, the mounting platform is detachably fixed on a track, and the mobile platform is provided with a servo motor, a driving wheel and a synchronous belt; the servo motor is in transmission connection with the driving wheel through the synchronous belt, the control box is electrically connected with the servo motor and used for adjusting the rotating speed of the driving wheel, and the driving wheel movably contacts with the train wheel and drives the train wheel to rotate. A displacement adjusting mechanism and a guide mechanism are arranged on the mounting platform, the displacement adjusting mechanism is fixed on the mounting platform, the moving platform is slidably fixed on the mounting platform through the guide mechanism, and the output end of the displacement adjusting mechanism is connected with the moving platform and used for driving the moving platform to move along the guide mechanism. Compared with the prior art, the servo motor is matched with the driving wheel to drive the train wheels to rotate at a constant speed, and the advantages of higher accuracy, convenience in operation, high efficiency and the like are achieved.

Description

Technical Field

[0001] The present invention relates to the field of train bearing detection equipment, and in particular to a device and method for assisting in detecting the bearing of a traction motor of an on-track train. Background Art

[0002] During the overhaul of subway trains, there are many items that need to be inspected. In order to identify problematic parts more quickly and conveniently, a certain important part will be inspected on the track. This way, problematic parts can be identified in advance and targeted inspections can be performed. This simplifies the work of the train and shortens the inspection time of the entire train. When the train is on track, a bearing tester is needed to detect the condition of the bearings inside the traction motor. Because the train is in an unpowered state at this time, the output shaft of the traction motor cannot rotate. The bearing tester cannot detect if it cannot collect the pulse vibration signal.

[0003] The current operation method is to use a lifting device to support the outer axle box of the wheelset, lift the wheelset on the side of the traction motor to be tested, and make the wheelset suspended in the air. By manually turning the wheels, since the wheels are connected to the gear box, and the gear box is connected to the output shaft of the traction motor, turning the wheels can drive the output shaft of the traction motor to rotate, so that the bearing tester can collect pulse vibration signals and then detect the quality of the bearings inside the traction motor; however, manual wheel rotation will result in uneven speed and much interference when collecting signals. Therefore, it is urgent to provide a device that can drive the train wheels to rotate at a uniform speed to assist in detecting the bearings of the traction motors of on-track trains. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for assisting the detection of traction motor bearings of on-rail trains in order to overcome the defects of the above-mentioned prior art that the train wheels are manually rotated, the train wheels cannot be rotated at a uniform speed, too many interference signals are generated when the bearing vibration signals are collected, and the accuracy of the detection results is low.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The present invention provides a device for assisting in detecting the bearing of a traction motor of an on-track train, comprising a control box, a mobile platform and a mounting platform, wherein the mobile platform can be movably fixed on the mounting platform, the mounting platform can be detachably fixed on the track, a servo motor, a driving wheel and a synchronous belt are arranged on the mobile platform, the servo motor is fixed on the mobile platform, and the driving wheel can be rotatably fixed on the mobile platform;

[0007] The servo motor is connected to the driving wheel through a synchronous belt transmission, and the control box is electrically connected to the servo motor for adjusting the rotation speed of the driving wheel. The driving wheel movably contacts the train wheel and is used to drive the train wheel to rotate; a displacement adjustment mechanism and a guide mechanism are provided on the mounting platform, the displacement adjustment mechanism is fixed on the mounting platform, and the mobile platform can be slidably fixed on the mounting platform through the guide mechanism, and the output end of the displacement adjustment mechanism is connected to the mobile platform for driving the mobile platform to move along the guide mechanism;

[0008] The displacement adjustment mechanism comprises a screw nut mounting plate, a screw, a hand wheel and a screw mounting plate, wherein the screw is arranged parallel to the track;

[0009] The screw mounting plate is fixed on the mounting platform, the rod nut mounting plate is fixed on the side of the mobile platform close to the mounting platform, the screw can be rotatably fixed on the screw mounting plate, the handwheel is fixed on one end of the screw, and the other end of the screw is threadedly connected to the screw nut mounting plate.

[0010] Preferably, the displacement adjustment mechanism further includes a screw fixing block and a screw tightening handle;

[0011] The screw fixing block is provided with a threaded hole matched with the screw, the screw passes through the threaded hole, the screw fixing block is fixed to the side of the screw mounting plate close to the handwheel, and the screw locking handle is installed on the screw fixing block to lock the screw rotation.

[0012] Preferably, the guide mechanism comprises a linear guide rail and a linear guide rail mounting seat;

[0013] The linear guide rail is fixed on the side of the installation platform close to the mobile platform, the linear guide rail mounting seat is fixed on the side of the mobile platform close to the installation platform, and the linear guide rail mounting seat can be slidably clamped on the linear guide rail; the number of the guide mechanisms is multiple, and each guide mechanism is symmetrically arranged on both sides of the displacement adjustment mechanism.

[0014] Preferably, the driving wheel is provided with a rubber belt, and the rubber belt is sleeved on the circumference of the driving wheel.

[0015] Preferably, a T-shaped locking bolt and a rail clamping block are provided on the side of the mounting platform away from the mobile platform; a slot matching the shape of the rail is provided at the lower end of the rail clamping block, and threaded holes matching the T-shaped locking bolt are provided on both sides of the slot. There are multiple T-shaped locking bolts, which are symmetrically arranged on both sides of the groove, and the threaded ends of the T-shaped locking bolts are located in the groove.

[0016] Preferably, a servo motor mounting bracket is provided on the mobile platform, the servo motor mounting bracket can be movably fixed on the mobile platform, and the servo motor is fixed on the servo motor mounting bracket;

[0017] The first synchronous pulley arranged at the output end of the servo motor and the second synchronous pulley coaxially connected to the driving wheel are connected through a synchronous belt transmission. The moving direction of the servo motor mounting bracket is arranged parallel to the synchronous belt for tensioning the synchronous belt.

[0018] Preferably, the servo motor mounting bracket comprises a connecting movable plate and a motor fixing plate, and the motor fixing plate is vertically fixed on the connecting movable plate;

[0019] The servo motor is mounted on the motor fixing plate, the connecting movable plate is provided with a waist hole, the long axis direction of the waist hole is parallel to the track, and the connecting movable plate is movably fixed on the movable platform by bolts;

[0020] The mobile platform is provided with a tightening mechanism, which includes a tightening bolt and a bolt fixing plate. The bolt fixing plate is fixed on the mobile platform. The tightening bolt is threadedly connected to the bolt fixing plate, and the threaded end abuts against the connecting mobile plate, which is used to drive the connecting mobile plate to move along the waist hole. The tightening bolt is parallel to the track.

[0021] Preferably, a protective cover is provided on the mobile platform, a notch matching the driving wheel is provided on the protective cover, the protective cover is provided on a side of the mobile platform away from the mounting platform, and the driving wheel partially passes through the notch and is located outside the protective cover.

[0022] Preferably, a universal wheel is provided at the lower end of the control box, and there are multiple universal wheels, each universal wheel is evenly distributed at the lower end of the control box; a control panel and a handle are provided at the upper end of the control box, the control panel is used to adjust the rotation speed of the driving wheel, and the handle is a U-shaped structure.

[0023] The present solution also provides an operating method of a device for assisting in detecting the bearing of a traction motor of an on-rail train. Using the above-mentioned device for assisting in detecting the bearing of a traction motor of an on-rail train, the method comprises the following steps:

[0024] S1: Use the lifting equipment to support the outer axle box of the train wheelset, lift the train wheelset on the traction motor side to be tested, and make the train wheelset suspended in the air;

[0025] S2: placing the mounting platform of the device on the track near the train wheel corresponding to the traction motor bearing to be tested, and fixing the device on the track;

[0026] S3: The displacement adjustment mechanism is activated to drive the mobile platform to move, and cooperates with the guide mechanism to guide the driving wheel on the mobile platform to approach the train wheel. When the driving wheel abuts against the train wheel, the displacement adjustment mechanism stops.

[0027] S4: Adjust the position of the servo motor and tighten the synchronous belt;

[0028] S5: Control the servo motor through the control box, and then drive the train wheel to rotate at a constant speed;

[0029] S6: The pulse vibration signal of the traction motor bearing rotation is collected through the bearing tester for bearing health diagnosis.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] (1) This solution uses a mounting platform to detachably fix the device on the track. The displacement adjustment mechanism set on the mounting platform drives the mobile platform to move along the guide mechanism, so that the driving wheel on the mounting platform abuts against the train wheel. The control box controls the servo motor to drive the driving wheel to rotate, thereby driving the bearings of the train wheel and the traction motor to rotate, and obtains the pulse vibration signal corresponding to the bearing for subsequent fault diagnosis. Among them, the double-layer movable structure, the mounting platform is fixed on the track, and the mobile platform is used to install the components that drive the train wheel to rotate. Through the screw structure between the two layers, the mobile platform is driven to move toward the train wheel and abut against the train wheel.

[0032] The device is easy to install and disassemble and flexible to use. The base of the device adopts a double-layer movable structure, which improves the flexibility of the device structure and the convenience of operation. The driving wheel rotates at a constant speed under the drive of the servo motor to reduce the collected interference signal, improve the accuracy of detection, and avoid human contact with the train wheel. It saves manpower and improves the safety of operation. The control box can adjust the speed of the driving wheel, and the device has strong adaptability.

[0033] (2) This solution controls the speed of the servo motor through a control box, thereby adjusting the speed of the bearing connected to the train wheel. The control panel of the control box is provided with an adjustable speed knob, which can adjust the speed of the servo motor according to the speed requirements in different situations. The adjustment is flexible and has a wider range of applications. The control box is small in size and easy to move with universal wheels and handles, and can adapt to different working environments. It greatly facilitates the operation of on-site workers and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of the device for assisting in detecting the bearing of the traction motor of an on-track train provided by the present invention;

[0035] Figure 2 A schematic structural diagram of a device for assisting in detecting bearings of traction motors of on-track trains provided by the present invention with the protective cover removed from a first-view perspective;

[0036] Figure 3A schematic structural diagram of a device for assisting in detecting bearings of traction motors of on-track trains provided by the present invention, installed on a track from a first perspective;

[0037] Figure 4 A schematic structural diagram of a second perspective of the device for assisting in detecting bearings of traction motors of on-track trains provided by the present invention, which is installed on a track;

[0038] Figure 5 A schematic structural diagram of a second viewing angle of the device for assisting in detecting bearings of traction motors of on-track trains provided by the present invention with the protective cover removed;

[0039] In the figure: 1. control box, 2. control panel, 3. protective cover, 4. driving wheel, 5. handle, 6. T-type locking bolt (whether synchronous transmission on both sides is possible, the locking degree of left and right is different, whether the driving wheel will be tilted, affecting the transmission effect), 7. rail clamping block, 8. servo motor, 9. driving wheel mounting frame, 10. second synchronous pulley, 11. synchronous belt, 12. mobile platform, 13. linear guide, 14. linear guide mounting seat, 15. second synchronous pulley, 16. servo motor mounting bracket, 17. mounting platform, 18. screw nut mounting plate, 19. screw, 20. handwheel, 21. screw fixing block, 22. screw fixing handle, 23. screw mounting plate, 24. train wheel, 161. connecting moving plate, 162. motor fixing plate, 163. waist hole, 164. tightening bolt, 165. bolt fixing plate. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0044] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] Example 1

[0047] like Figure 1 and Figure 2 As shown, this embodiment provides a device for assisting in detecting the bearing of a traction motor of an on-track train, comprising a control box 1, a mobile platform 12 and a mounting platform 17, wherein the mobile platform 12 is movably fixed on the mounting platform 17, and the mounting platform 17 is detachably fixed on the track, and a servo motor 8, a driving wheel 4 and a synchronous belt 11 are provided on the mobile platform 12, and the servo motor 8 is fixed on the mobile platform 12, and the driving wheel 4 is rotatably fixed on the mobile platform 12;

[0048] The servo motor 8 is connected to the driving wheel 4 through the synchronous belt 11, and the control box 1 is electrically connected to the servo motor 8 for adjusting the rotation speed of the driving wheel 4. The driving wheel 4 movably contacts the train wheel 24 for driving the train wheel 24 to rotate; a displacement adjustment mechanism and a guide mechanism are provided on the mounting platform 17, the displacement adjustment mechanism is fixed on the mounting platform 17, and the mobile platform 12 can be slidably fixed on the mounting platform 17 through the guide mechanism, and the output end of the displacement adjustment mechanism is connected to the mobile platform 12 for driving the mobile platform 12 to move along the guide mechanism.

[0049] Working principle: Before carrying out bearing inspection, the device is fixed on the track near the train wheel 24 corresponding to the bearing to be inspected through the mounting platform 17, and then the mobile platform 12 is driven to move toward the train wheel 24 through the displacement adjustment mechanism, so that the driving wheel 4 on the mobile platform 12 is against the wheel edge of the train wheel 24; the servo motor 8 is controlled by the control box 1 to drive the driving wheel to rotate, thereby driving the train wheel 24 to rotate, and the traction motor output shaft connected to the wheel gear rotates, and the corresponding traction motor bearing rotates, so that the bearing tester can collect the pulse vibration signal and diagnose the bearing; and according to the speed requirement, the speed of the servo motor 8 is adjusted through the control box 1.

[0050] The device is detachably fixed on the track through the installation platform 17. The displacement adjustment mechanism set on the installation platform 17 drives the mobile platform 12 to move along the guide mechanism, so that the driving wheel 4 on the installation platform 17 is against the train wheel 24. The control box 1 is used to control the servo motor 8 to drive the driving wheel 4 to rotate, and then drive the train wheel 24 and the bearing of the traction motor to rotate, obtain the pulse vibration signal corresponding to the bearing, and perform subsequent fault diagnosis. The device is easy to install and disassemble and flexible to use. The driving wheel 4 rotates at a uniform speed under the drive of the servo motor to reduce the collected interference signal, improve the accuracy of detection, avoid human contact with the train wheel, save manpower and improve the safety of the operation. The control box can adjust the speed of the driving wheel, and the device has strong adaptability.

[0051] Specifically, the displacement adjustment mechanism includes a screw nut mounting plate 18, a screw 19, a hand wheel 20 and a screw mounting plate 23;

[0052] The screw mounting plate 23 is fixed on the mounting platform 17, the rod nut mounting plate 18 is fixed on the side of the mobile platform 12 close to the mounting platform 17, the screw 19 is rotatably fixed on the screw mounting plate 23, the handwheel 20 is fixed on one end of the screw 19, and the other end of the screw 19 is threadedly connected to the screw nut mounting plate 18.

[0053] Optionally, the displacement adjustment mechanism further includes a screw fixing block 21 and a screw tightening handle 22;

[0054] The screw fixing block 21 is provided with a threaded hole matching the screw 19. The screw 19 passes through the threaded hole. The screw fixing block 21 is fixed to the side of the screw mounting plate 23 close to the handwheel 20. The screw locking handle 22 is installed on the screw fixing block 21 to lock the screw 19 from rotating.

[0055] The screw rod 19 is rotated by the hand wheel 20 to drive the screw nut mounting plate 18 on the screw rod 19, thereby driving the mobile platform 12 to make fine adjustments to the left and right positions, so that the driving wheel 4 can reliably rest against the wheel rim position of the train wheel 24, and then the position of the screw rod 19 is fixed by the screw rod tightening handle 22 to ensure the positive pressure between the driving wheel 4 and the train wheel 24, thereby ensuring sufficient friction to drive and higher stability during rotation.

[0056] Further, the guide mechanism includes a linear guide rail 13 and a linear guide rail mounting seat 14;

[0057] The linear guide 13 is fixed on the side of the installation platform 17 close to the mobile platform 12, and the linear guide mounting seat 14 is fixed on the side of the mobile platform 12 close to the installation platform 17. The linear guide mounting seat 14 can be slidably clamped on the linear guide 13; the number of guide mechanisms is multiple, and each guide mechanism is symmetrically arranged on both sides of the displacement adjustment mechanism.

[0058] By arranging linear guide rails 13 on both sides of the screw rod 19 and cooperating with the linear guide rail mounting seat 14 arranged under the mobile platform 12, the moving trajectory of the mobile platform 12 is guided to ensure that the driving wheel 4 can contact the preset position of the train wheel 24.

[0059] Optionally, a rubber belt is provided on the driving wheel 4, and the rubber belt sleeve is provided on the circumference of the driving wheel 4. By providing the rubber belt between the driving wheel 4 and the train wheel 24, the friction between the two can be increased, the friction between the two can be improved, the driving wheel and the train wheel can be prevented from slipping during operation, and the reliability of transmission can be ensured.

[0060] Specifically, a T-shaped locking bolt 6 and a rail clamping block 7 are provided on the side of the mounting platform 17 away from the mobile platform 12; a groove matching the shape of the rail is provided at the lower end of the rail clamping block 7, and threaded holes matching the T-shaped locking bolt 6 are provided on both sides of the groove. There are multiple T-shaped locking bolts 6, which are symmetrically arranged on both sides of the groove, and the threaded ends of the T-shaped locking bolts 6 are located in the groove.

[0061] Adjust the T-locking bolt 6 to open the groove on the rail clamping block 7, use the groove to clamp the rail clamping block 7 on the track, then adjust the T-locking bolt 6 so that the opposite ends of the T-locking bolt 6 are against the two sides of the track to complete the installation of the device on the track.

[0062] Among them, a servo motor mounting bracket 16 and a driving wheel mounting bracket 9 are provided on the mobile platform 12, the servo motor mounting bracket 16 is movably fixed on the mobile platform 12, the servo motor 8 is fixed on the servo motor mounting bracket 16, the driving wheel mounting bracket 9 is fixed on the mobile platform 12, and the driving wheel 4 is rotatably fixed on the driving wheel mounting bracket 9;

[0063] The first synchronous pulley 15 arranged at the output end of the servo motor 8 and the second synchronous pulley 10 coaxially connected to the driving wheel 4 are connected through a synchronous belt 11. The moving direction of the servo motor mounting bracket 16 is set parallel to the synchronous belt 11 for tensioning the synchronous belt 11.

[0064] Alternatively, if Figure 5 As shown, the servo motor mounting bracket 16 includes a connecting movable plate 161 and a motor fixing plate 162, and the motor fixing plate 162 is vertically fixed on the connecting movable plate 161;

[0065] The servo motor is mounted on the motor fixing plate 162, and a waist hole 163 is provided on the connecting movable plate 161. The long axis direction of the waist hole 163 is parallel to the track. The connecting movable plate 161 is movably fixed on the movable platform 12 by bolts.

[0066] A tightening mechanism is provided on the mobile platform 12, and the tightening mechanism includes a tightening bolt 164 and a bolt fixing plate 165. The bolt fixing plate 165 is fixed on the mobile platform 12. The tightening bolt 164 is threadedly connected to the bolt fixing plate 165, and the threaded end abuts against the connecting mobile plate 161, which is used to drive the connecting mobile plate 161 to move along the waist hole 163. The tightening bolt 164 is parallel to the track.

[0067] When the synchronous belt 11 is tensioned, the bolts in the waist hole 163 of the connecting movable plate 161 are loosened, and then the tightening bolts 164 are rotated to push the connecting movable plate 161 to move along the waist hole 163 to the side away from the driving wheel, thereby increasing the distance between the servo motor on the motor fixing plate 162 and the driving wheel, and the synchronous belt 11 between the two is tensioned. Thereafter, the bolts in the waist hole 163 are tightened to fix the servo motor mounting bracket 16 to ensure the transmission reliability and the transmission capacity of the synchronous belt 11. The structure is simple and reliable, and the adjustment is convenient.

[0068] The mobile platform 12 is provided with a protective cover 3, which is provided with a notch matched with the driving wheel 4. The protective cover 3 is provided on the side of the mobile platform 12 away from the mounting platform 17, and the driving wheel 4 partially passes through the notch and is located on the outside of the protective cover 3. Handles 5 are also provided on both sides of the protective cover 3, and the device can be lifted by the handles 5 for easy later transportation. The protective cover 3 provided on the outside of the mobile platform 12 can protect the servo motor or driving wheel and other structures provided on the mobile platform 12, thereby improving the reliability of the device.

[0069] In a preferred embodiment, a universal wheel is provided at the lower end of the control box 1, and the number of the universal wheels is multiple, and each universal wheel is evenly distributed at the lower end of the control box 1; a control panel 2 and a handle are provided at the upper end of the control box 1, the control panel 2 is used to adjust the rotation speed of the driving wheel 4, and the handle is a U-shaped structure.

[0070] The speed of the servo motor is controlled by the control box, and then the speed of the bearing connected to the train wheel is adjusted. The control panel of the control box is provided with an adjustable speed knob, which can adjust the speed of the servo motor according to the speed requirements in different situations. The adjustment is flexible and has a wider range of applications. The control box is small in size and easy to move with universal wheels and handles to adapt to different working environments. It greatly facilitates the operation of on-site operators and improves work efficiency.

[0071] like Figure 3 and Figure 4 As shown, this embodiment also provides an operation method of a device for assisting in detecting the bearing of a traction motor of an on-rail train, using the above-mentioned device for assisting in detecting the bearing of a traction motor of an on-rail train, comprising the following steps:

[0072] S1: Use the lifting equipment to support the outer axle box of the train wheelset, lift the train wheelset on the traction motor side to be tested, and make the train wheelset suspended in the air;

[0073] S2: placing the mounting platform of the device on the track near the train wheel corresponding to the traction motor bearing to be tested, and fixing the device on the track;

[0074] S3: The displacement adjustment mechanism is activated to drive the mobile platform to move, and cooperates with the guide mechanism to guide the driving wheel on the mobile platform to approach the train wheel. When the driving wheel abuts against the train wheel, the displacement adjustment mechanism stops.

[0075] S4: Adjust the position of the servo motor and tighten the synchronous belt;

[0076] S5: Control the servo motor through the control box, and then drive the train wheel to rotate at a constant speed;

[0077] S6: The pulse vibration signal of the traction motor bearing rotation is collected through the bearing tester for bearing health diagnosis.

[0078] In combination with the above preferred implementation modes, this embodiment provides a more specific implementation process, including:

[0079] Use lifting equipment to support the outer axle boxes of the pair of wheelsets that need to be tested, lift the wheelsets off the track, and leave them suspended in the air.

[0080] The mechanical transmission part of the equipment is mounted on the rails, and the mounting platform 17 is mounted near the train wheels using T-shaped locking bolts 6 and rail clamping blocks 7, and then firmly locked;

[0081] By shaking the hand wheel 20, the screw rod 19 rotates, and the mobile platform 12 and the components installed on it can be moved closer to the train wheel through the linear guide rail 13 and the linear guide rail mounting seat 14. After the driving wheel 4 is reliably against the train wheel 24, the screw rod tightening handle 22 is operated to fix the position of the screw rod 19, ensuring that the position of the mobile platform 12 and the components installed on it does not change, and the driving wheel and the train wheel are closer to each other, thereby increasing the friction force;

[0082] By adjusting the position of the servo motor mounting bracket 16, the synchronous belt 11 is kept in a tensioned state;

[0083] After the mobile platform 12 is adjusted, the cable of the servo motor is connected to the control box, and then the power is turned on; press the start switch, the drive wheel will rotate at the set speed, and if speed adjustment is required, the speed adjustment switch on the control panel can be turned to complete the speed adjustment.

[0084] Through the settings in the control box, the knob switch is used to control the speed of the servo motor to meet the requirements of various working conditions; the friction force can be used to make the driving wheel drive the train wheel to rotate, and in order to maximize the friction between the driving wheel and the train wheel, a close-fitting function is also provided. By operating on the track, the trouble of train marshaling and decomposition operations is eliminated, and the fault point can be quickly determined; at the same time, it replaces manual operation, eliminates interference during data collection, greatly improves accuracy, improves work efficiency, and improves work safety. This equipment fully considers the diversity of the on-site working environment, and can be used together with other tools to efficiently complete on-site inspection operations.

[0085] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A device for assisting in detecting the bearings of traction motors of on-track trains, characterized in that: The invention comprises a control box (1), a mobile platform (12) and a mounting platform (17); the mobile platform (12) is movably fixed on the mounting platform (17); the mounting platform (17) is detachably fixed on a track; a servo motor (8), a driving wheel (4) and a synchronous belt (11) are provided on the mobile platform (12); the servo motor (8) is fixed on the mobile platform (12); and the driving wheel (4) is rotatably fixed on the mobile platform (12); The servo motor (8) is connected to the driving wheel (4) through a synchronous belt (11), and the control box (1) is electrically connected to the servo motor (8) for adjusting the rotation speed of the driving wheel (4). The driving wheel (4) movably contacts the train wheel (24) for driving the train wheel (24) to rotate; a displacement adjustment mechanism and a guide mechanism are provided on the mounting platform (17), the displacement adjustment mechanism is fixed on the mounting platform (17), and the mobile platform (12) is slidably fixed on the mounting platform (17) through the guide mechanism; the output end of the displacement adjustment mechanism is connected to the mobile platform (12) for driving the mobile platform (12) to move along the guide mechanism; The displacement adjustment mechanism comprises a screw nut mounting plate (18), a screw (19), a hand wheel (20) and a screw mounting plate (23), wherein the screw (19) is arranged parallel to the track; The screw rod mounting plate (23) is fixed on the mounting platform (17), the rod nut mounting plate (18) is fixed on a side of the mobile platform (12) close to the mounting platform (17), the screw rod (19) is rotatably fixed on the screw rod mounting plate (23), the hand wheel (20) is fixed on one end of the screw rod (19), and the other end of the screw rod (19) is threadedly connected to the screw rod nut mounting plate (18).

2. The device for assisting in detecting the bearing of a traction motor of an on-track train according to claim 1, characterized in that: The displacement adjustment mechanism also includes a screw fixing block (21) and a screw tightening handle (22); The screw fixing block (21) is provided with a threaded hole matched with the screw (19), the screw (19) passes through the threaded hole, the screw fixing block (21) is fixed to a side of the screw mounting plate (23) close to the hand wheel (20), and the screw locking handle (22) is installed on the screw fixing block (21) for locking the screw (19) from rotating.

3. The device for assisting in detecting the bearing of a traction motor of an on-track train according to claim 1, characterized in that: The guide mechanism comprises a linear guide rail (13) and a linear guide rail mounting seat (14); The linear guide rail (13) is fixed on a side of the installation platform (17) close to the mobile platform (12), the linear guide rail mounting seat (14) is fixed on a side of the mobile platform (12) close to the installation platform (17), and the linear guide rail mounting seat (14) can be slidably clamped on the linear guide rail (13); the number of the guide mechanisms is multiple, and each guide mechanism is symmetrically arranged on both sides of the displacement adjustment mechanism.

4. The device for assisting in detecting the bearing of a traction motor of an on-track train according to claim 1, characterized in that: The driving wheel (4) is provided with a rubber belt, and the rubber belt sleeve is sleeved on the circumference of the driving wheel (4).

5. The device for assisting in detecting the bearing of the traction motor of an on-track train according to claim 1, characterized in that: A T-shaped locking bolt (6) and a rail clamping block (7) are provided on the side of the mounting platform (17) away from the moving platform (12); a groove matching the shape of the rail is provided at the lower end of the rail clamping block (7); threaded holes matching the T-shaped locking bolt (6) are provided on both sides of the groove; the T-shaped locking bolts (6) are provided in plurality and are symmetrically arranged on both sides of the groove; the threaded ends of the T-shaped locking bolts (6) are located in the groove.

6. The device for assisting in detecting the bearing of the traction motor of an on-track train according to claim 1, characterized in that: A servo motor mounting bracket (16) is provided on the mobile platform (12), the servo motor mounting bracket (16) is movably fixed on the mobile platform (12), and the servo motor (8) is fixed on the servo motor mounting bracket (16); A first synchronous pulley (15) provided at the output end of the servo motor (8) and a second synchronous pulley (10) coaxially connected to the drive wheel (4) are connected through a synchronous belt (11). The moving direction of the servo motor mounting bracket (16) is arranged parallel to the synchronous belt (11) and is used to tension the synchronous belt (11).

7. The device for assisting in detecting the bearing of the traction motor of an on-track train according to claim 6, characterized in that: The servo motor mounting bracket (16) comprises a connecting movable plate (161) and a motor fixing plate (162), wherein the motor fixing plate (162) is vertically fixed on the connecting movable plate (161); The servo motor is mounted on a motor fixing plate (162), a waist hole (163) is provided on the connecting movable plate (161), the long axis direction of the waist hole (163) is parallel to the track, and the connecting movable plate (161) is movably fixed on the movable platform (12) by bolts; The movable platform (12) is provided with a tightening mechanism, the tightening mechanism comprising a tightening bolt (164) and a bolt fixing plate (165), the bolt fixing plate (165) being fixed on the movable platform (12), the tightening bolt (164) being threadedly connected to the bolt fixing plate (165), and the threaded end abutting against the connecting movable plate (161), and being used for driving the connecting movable plate (161) to move along the waist hole (163), the tightening bolt (164) being parallel to the track.

8. The device for assisting in detecting the bearing of a traction motor of an on-track train according to claim 1, characterized in that: The mobile platform (12) is provided with a protective cover (3), and the protective cover (3) is provided with a notch that matches the driving wheel (4). The protective cover (3) is arranged on a side of the mobile platform (12) away from the mounting platform (17), and the driving wheel (4) partially passes through the notch and is located outside the protective cover (3).

9. The device for assisting in detecting the bearing of a traction motor of an on-track train according to claim 1, characterized in that: The lower end of the control box (1) is provided with a universal wheel, the number of the universal wheels being multiple and each of the universal wheels being evenly distributed at the lower end of the control box (1); the upper end of the control box (1) is provided with a control panel (2) and a handle, the control panel (2) being used to adjust the rotation speed of the driving wheel (4), and the handle being a U-shaped structure.

10. An operating method of a device for assisting in detecting the bearing of a traction motor of an on-rail train, using the device for assisting in detecting the bearing of a traction motor of an on-rail train according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Use the lifting equipment to support the outer axle box of the train wheelset, lift the train wheelset on the traction motor side to be tested, and make the train wheelset suspended in the air; S2: placing the mounting platform of the device on the track near the train wheel corresponding to the traction motor bearing to be tested, and fixing the device on the track; S3: The displacement adjustment mechanism is activated to drive the mobile platform to move, and cooperates with the guide mechanism to guide the driving wheel on the mobile platform to approach the train wheel. When the driving wheel abuts against the train wheel, the displacement adjustment mechanism stops. S4: Adjust the position of the servo motor and tighten the synchronous belt; S5: Control the servo motor through the control box, and then drive the train wheel to rotate at a constant speed; S6: The pulse vibration signal of the traction motor bearing rotation is collected through the bearing tester for bearing health diagnosis.

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