A dry wheel rim lubrication device for railway vehicles

Abstract

The present invention discloses a dry wheel rim lubrication device for rail vehicles, which relates to the technical field of rail vehicle wheel rail lubrication. The device comprises an electronic control system and a mechanical adjustment system; the electronic control system comprises a PLC control unit and a sensor, the sensor being used to collect vehicle operating condition signals, the PLC control unit receiving and processing the operating condition signals collected by the sensor, and controlling the operation of the mechanical adjustment system; the mechanical adjustment system comprises a frame, a drive mechanism, a screw mechanism, a spring preload mechanism, and a lubrication mechanism, the drive mechanism being fixedly mounted on the frame, the screw mechanism being arranged at the output end of the drive mechanism, the spring preload mechanism being fixedly mounted on the slider of the screw mechanism, and the lubrication mechanism being arranged at the end of the spring preload mechanism away from the slider. The present invention can adjust the amount of lubrication to meet the lubrication requirements of rail vehicles under different operating paths and different speeds, thereby achieving a better lubrication effect, greatly saving lubricating materials, extending the life of the lubrication block, and improving lubrication efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rail vehicle wheel and rail lubrication, and in particular to a dry wheel rim lubrication device for a rail vehicle. Background Art

[0002] Rail transit systems primarily utilize a wheel-rail system. As a crucial component of rail vehicles, the wheel-rail system relies on rolling friction for traction, operation, and braking. During operation, the vehicle relies on the wheel flange for guidance. Due to the heavy bogie axle and long wheelbase of the locomotive, significant lateral forces act during operation, leading to premature wear of the wheel-rail tread. This can cause wear, fatigue, and even fracture of components between the wheel and rail, reducing their lifespan and impacting vehicle safety. The greater the vehicle's deviation angle during operation, the greater the wear on the wheel flange, and the higher the requirements for wheel flange lubrication.

[0003] The existing dry wheel rim lubrication device cannot meet the different lubrication needs of vehicles on straight and curved sections, that is, it cannot change the lubrication effect according to different operating conditions, resulting in waste of lubricating materials and low lubrication efficiency, while also increasing operation and maintenance costs. Summary of the Invention

[0004] The main purpose of the present invention is to provide a rail vehicle dry wheel rim lubrication device to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A rail vehicle dry wheel rim lubrication device comprises an electronic control system and a mechanical adjustment system;

[0007] The electronic control system includes a PLC control unit and a sensor, wherein the sensor is used to collect vehicle operating condition signals, and the PLC control unit receives and processes the operating condition signals collected by the sensor and controls the operation of the mechanical adjustment system;

[0008] The mechanical adjustment system includes a frame, a driving mechanism, a screw mechanism, a spring pre-tensioning mechanism and a lubrication mechanism. The driving mechanism is fixedly arranged on the frame, the screw mechanism is arranged at the output end of the driving mechanism, the spring pre-tensioning mechanism is fixedly arranged on the slider of the screw mechanism, and the lubrication mechanism is arranged at the end of the spring pre-tensioning mechanism away from the slider.

[0009] Furthermore, the sensor includes a speed sensor and an inclination sensor, both of which are mounted on the vehicle body bogie, and both of which are electrically connected to the PLC control unit.

[0010] Furthermore, a slide is provided on one side of the frame close to the lubrication mechanism, and the screw mechanism includes a screw support seat, a screw rod and a slider. The screw support seat is fixedly arranged on the frame, one end of the screw rod passes through the screw support seat and is connected to the output end of the driving mechanism, and the other end is rotatably connected to the side of the slide, and the slider is threadedly connected to the screw rod.

[0011] Furthermore, the spring pre-tensioning mechanism includes a spring guide sleeve, a spring guide rod and a spring. The spring guide sleeve is fixedly arranged on the side of the slider, one end of the spring guide rod is fixedly connected to the spring guide sleeve, and the other end is slidably connected to the lubrication mechanism. The spring sleeve is arranged on the outside of the spring guide rod, and the two ends of the spring are respectively in conflict with the spring guide sleeve and the lubrication mechanism.

[0012] Furthermore, the lubrication mechanism includes a lubrication block seat and a lubrication block, the lubrication block seat is slidably arranged on the slideway, the lubrication block is fixedly arranged at the end of the lubrication block seat, the side of the lubrication block seat away from the lubrication block is in contact with the spring, a through hole is provided on the lubrication block seat, one end of the spring guide rod passes through the through hole and is bolted to the spring guide sleeve, and the other end is provided with a frustum, the frustum is located on the side of the lubrication block seat away from the spring, and the diameter of the frustum is larger than the diameter of the through hole.

[0013] Furthermore, the driving mechanism includes a stepper motor, a reducer and a coupling. The stepper motor is fixedly mounted on the frame, the reducer is arranged at the output end of the stepper motor, the output end of the reducer is connected to the screw rod through the coupling, and the stepper motor is electrically connected to the PLC control unit.

[0014] Furthermore, the slide is fixedly connected to the frame, and the side walls of the slide and the frame are both provided with through grooves, and the through grooves of the two form a slide rail, and the spring guide rod and the lubrication block seat are both provided with a slide rod, and the slide rod is slidably matched with the slide rail.

[0015] Furthermore, the lubrication block seat includes a seat body and a unilateral OK clamp, the unilateral OK clamp is fixedly connected to the seat body, a groove is provided on the seat body, the tail end of the lubrication block is arranged in the groove, the front end of the lubrication block protrudes from the groove, and the unilateral OK clamp is pressed on the top of the lubrication block.

[0016] Furthermore, a limit block is provided on a side of the slideway away from the slider, the limit block is provided with a mounting hole, and the end of the screw rod is rotatably disposed in the mounting hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By setting sensors to collect operating condition signal parameters, the operating conditions of rail vehicles can be accurately detected. The PLC control unit is used to receive and process signals, thereby controlling the forward and reverse rotation of the stepper motor and the extension and retraction of the lubrication block. Accurate operation can achieve precise adjustment of the lubrication effect of the lubrication block. By changing the spring preload, the lubrication amount is adjusted to meet the lubrication needs of rail vehicles at different operating paths and speeds, making the lubrication effect better, greatly saving lubrication materials, extending the life of the lubrication block, improving lubrication efficiency, and reducing operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the mechanical adjustment system of the present invention.

[0021] Figure 3 This is a schematic diagram of the assembly structure of the frame and drive mechanism of the present invention.

[0022] Figure 4 This is a schematic diagram of the assembly structure of the screw mechanism and the spring pre-tightening mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the assembly structure of the spring preload mechanism and the lubrication mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of the exploded structure of the spring preload mechanism and lubrication mechanism of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the lubrication mechanism of the present invention.

[0026] Figure 8 This is a structural schematic diagram of the lubricating block seat of the present invention.

[0027] Figure 9 It is a schematic diagram of the slide structure of the present invention.

[0028] Figure 10 It is a partial structural diagram of the mechanical adjustment system of the present invention.

[0029] Among them, 1-lubrication block, 2-slide, 3-spring, 4-frame, 5-coupling, 6-reducer, 7-stepping motor, 8-speed sensor, 9-tilt sensor, 10-PLC control unit, 11-slider, 12-screw support seat, 13-spring guide sleeve, 14-spring guide rod, 141-round table, 15-lubrication block seat, 151-seat body, 152-unilateral OK fixture, 153-groove, 154-through hole, 16-screw, 17-limit block, 18-mounting hole. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0031] Combine Figures 1 to 10 , the present invention provides a rail vehicle dry wheel rim lubrication device, including an electronic control system and a mechanical adjustment system;

[0032] The electronic control system includes a PLC control unit 10 and a sensor, wherein the sensor is used to collect vehicle operating condition signals, and the PLC control unit 10 receives and processes the operating condition signals collected by the sensor and controls the operation of the mechanical adjustment system;

[0033] The mechanical adjustment system includes a frame 4, a driving mechanism, a screw mechanism, a spring 3 pre-tightening mechanism and a lubrication mechanism. The driving mechanism is fixedly arranged on the frame 4, the screw mechanism is arranged at the output end of the driving mechanism, the spring 3 pre-tightening mechanism is fixedly arranged on the slider 11 of the screw mechanism, and the lubrication mechanism is arranged at the end of the spring 3 pre-tightening mechanism away from the slider 11.

[0034] In this embodiment, the sensors include a speed sensor 8 and an inclination sensor 9, both of which are mounted on the vehicle bogie and are electrically connected to the PLC control unit 10. During vehicle travel, the speed sensor 8 detects the speed and direction of the driving wheelset, and the inclination sensor 9 detects the lateral inclination of the bogie. When the PLC control unit 10 determines that the rail vehicle is about to enter a curve, it precisely controls the drive mechanism to operate in the forward direction based on the curve radius and vehicle speed. When the PLC control unit 10 determines that the rail vehicle has completed the curve, it controls the drive mechanism to operate in the reverse direction.

[0035] Preferably, a slideway 2 is provided on the side of the frame 4 close to the lubrication mechanism, and the screw mechanism includes a screw support seat 12, a screw rod 16, and a slider 11. The screw support seat 12 is fixedly arranged on the frame 4. One end of the screw rod 16 passes through the screw support seat 12 and is connected to the output end of the drive mechanism, and the other end is rotatably connected to the side of the slideway 2. The slider 11 is threadedly connected to the screw rod 16. During operation, the drive mechanism drives the screw rod 16 to rotate, causing the slider 11 to perform linear motion on the screw rod 16.

[0036] In this embodiment, a limit block 17 is provided on the side of the slideway 2 away from the slider 11. The limit block 17 has a mounting hole 18, and the end of the screw rod 16 is rotatably disposed in the mounting hole 18. The setting of the limit block 17 plays a role in supporting the end of the screw rod 16.

[0037] Preferably, the spring 3 pre-tightening mechanism includes a spring guide sleeve 13, a spring guide rod 14, and a spring 3. The spring guide sleeve 13 is fixedly mounted on the side of the slider 11. One end of the spring guide rod 14 is fixedly connected to the spring guide sleeve 13, and the other end is slidably connected to the lubrication mechanism. The spring 3 is sleeved on the outside of the spring guide rod 14, and the two ends of the spring 3 respectively contact the spring guide sleeve 13 and the lubrication mechanism. During operation, when the slider 11 makes a linear motion on the screw rod 16, the spring guide sleeve 13 moves forward accordingly, thereby compressing the spring 3, changing the elastic force of the spring 3, and pushing the lubrication mechanism forward, causing it to contact the wheel rim for lubrication.

[0038] In this embodiment, the slider 11 is connected to the spring guide sleeve 13 by screws; the spring guide rod 14 is arranged inside the spring 3 and plays a role of spring guidance.

[0039] Preferably, the lubrication mechanism includes a lubrication block seat 15 and a lubrication block 1. The lubrication block seat 15 is slidably mounted on the slideway 2, and the lubrication block 1 is fixedly mounted at the end of the lubrication block seat 15. The side of the lubrication block seat 15 away from the lubrication block 1 is in contact with the spring 3. The lubrication block seat 15 is provided with a through hole 154. One end of the spring guide rod 14 passes through the through hole 154 and is bolted to the spring guide sleeve 13. The other end is provided with a round platform 141. The round platform 141 is located on the side of the lubrication block seat 15 away from the spring 3, and the diameter of the round platform 141 is larger than the diameter of the through hole 154. During operation, when the lubrication block 1 is required for lubrication, the spring 3 pushes the lubrication block seat 15 forward, causing the lubrication block 1 to extend. When the lubrication block 1 is retracted, the round platform 141 at the end of the spring guide rod 14 pulls the lubrication block seat 15 back, causing the lubrication block 1 to retract.

[0040] In this embodiment, the lubricating block holder 15 includes a holder 151 and a single-sided OK clamp 152. The single-sided OK clamp 152 is fixedly connected to the holder 151. The holder 151 is provided with a groove 153. The tail end of the lubricating block 1 is disposed within the groove 153, while the front end of the lubricating block 1 protrudes from the groove 153. The single-sided OK clamp 152 is pressed against the top of the lubricating block 1. The groove 153 on the holder 151 and the single-sided OK clamp 152 work together to clamp the lubricating block 1 and secure it.

[0041] Preferably, the driving mechanism includes a stepper motor 7, a reducer 6, and a coupling 5. The stepper motor 7 is fixedly mounted on the frame 4. The reducer 6 is disposed at the output end of the stepper motor 7. The output end of the reducer 6 is connected to the screw 16 via the coupling 5. The stepper motor 7 is electrically connected to the PLC control unit 10. During operation, the sensor collects vehicle operating condition signals, which are processed and controlled by the PLC control unit 10 to drive the stepper motor 7 in forward and reverse rotation. The stepper motor 7 transmits torque to the screw 16 via the reducer 6 and the coupling 5. The rotation of the screw 16 causes the slider 11 to perform a linear feed motion, thereby changing the compression stroke of the spring 3, causing the lubrication block 1 to contact the wheel rim, and changing the preload force of the lubrication block 1 to adjust the degree of lubrication.

[0042] Preferably, the slide 2 is fixedly connected to the frame 4, and the side walls of the slide 2 and the frame 4 are both provided with through grooves, and the through grooves of the two form a slide rail, and the spring guide rod 14 and the lubrication block seat 15 are both provided with a slide rod, and the slide rod is slidably matched with the slide rail.

[0043] In this embodiment, the slide 2 and the frame 4 are connected by bolts, and the slide rods provided on the spring guide sleeve 13 and the lubrication block seat 15 are cylindrical guide rods, which can move along the slide rails on the frame 4 and the slide 2 cavity, making the movement smoother and more precise.

[0044] Working Principle: When the PLC control unit 10 determines that the rail vehicle is about to enter a curve, it precisely controls the stepper motor 7 to work in the forward direction according to the curve radius and vehicle speed. The motor transmits torque to the screw 16 through the reducer 6 and coupling 5. The screw 16 rotates, causing the slider 11 to move forward along its axis. The spring guide sleeve 13 connected to the slider 11 moves forward accordingly, and the spring 3 is compressed. The elastic force of the spring 3 changes, pushing the lubrication block seat 15 forward, pushing the lubrication block 1 into contact with the wheel rim for lubrication.

[0045] When the PLC control unit 10 determines that the rail vehicle has completed the curve, the PLC control unit 10 controls the stepping motor 7 to work in the reverse direction, and the round table 141 at the end of the spring guide rod 14 pulls the lubricating block seat 15 back, and the lubricating block 1 is separated from the wheel rim, and lubrication is ended;

[0046] The present invention can accurately achieve wheel rim lubrication when rail vehicles are traveling on curved sections, and can also adjust the lubrication degree according to different curve radii and vehicle speeds, thereby optimizing the lubrication effect under different working conditions, greatly saving lubricating materials, extending the lubrication life, and improving lubrication efficiency.

[0047] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A dry wheel rim lubrication device for a railway vehicle, characterized in that: Including electronic control system and mechanical adjustment system; The electronic control system includes a PLC control unit and a sensor, wherein the sensor is used to collect vehicle operating condition signals, and the PLC control unit receives and processes the operating condition signals collected by the sensor and controls the operation of the mechanical adjustment system; The mechanical adjustment system includes a frame, a drive mechanism, a screw mechanism, a spring pre-tightening mechanism, and a lubricating mechanism. The drive mechanism is fixedly mounted on the frame, the screw mechanism is disposed at the output end of the drive mechanism, the spring pre-tightening mechanism is fixedly mounted on the slider of the screw mechanism, and the lubricating mechanism is disposed at the end of the spring pre-tightening mechanism away from the slider. The sensors include a speed sensor and an inclination sensor, both of which are mounted on the vehicle body bogie, and are electrically connected to the PLC control unit; A slideway is provided on one side of the frame close to the lubrication mechanism, and the screw mechanism includes a screw support seat, a screw rod and a slider. The screw support seat is fixedly arranged on the frame, one end of the screw rod passes through the screw support seat and is connected to the output end of the driving mechanism, and the other end is rotatably connected to the side of the slideway, and the slider is threadedly connected to the screw rod; The spring pre-tightening mechanism includes a spring guide sleeve, a spring guide rod and a spring, wherein the spring guide sleeve is fixedly arranged on the side of the slider, one end of the spring guide rod is fixedly connected to the spring guide sleeve, and the other end is slidably connected to the lubrication mechanism, the spring sleeve is arranged on the outside of the spring guide rod, and the two ends of the spring are respectively in conflict with the spring guide sleeve and the lubrication mechanism; The lubrication mechanism includes a lubrication block seat and a lubrication block, the lubrication block seat is slidably arranged on the slideway, the lubrication block is fixedly arranged at the end of the lubrication block seat, the side of the lubrication block seat away from the lubrication block is in contact with the spring, a through hole is provided on the lubrication block seat, one end of the spring guide rod passes through the through hole and is bolted to the spring guide sleeve, and the other end is provided with a round table, the round table is located on the side of the lubrication block seat away from the spring, and the diameter of the round table is larger than the diameter of the through hole.

2. A rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that: The driving mechanism includes a stepper motor, a reducer and a coupling. The stepper motor is fixedly mounted on the frame. The reducer is arranged at the output end of the stepper motor. The output end of the reducer is connected to the lead screw through the coupling. The stepper motor is electrically connected to the PLC control unit.

3. A rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that: The slide is fixedly connected to the frame, and the side walls of the slide and the frame are both provided with through slots, and the through slots of the two form a slide rail. The spring guide rod and the lubrication block seat are both provided with a slide rod, and the slide rod is slidably matched with the slide rail.

4. A rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that: The lubrication block seat includes a seat body and a unilateral OK clamp, the unilateral OK clamp is fixedly connected to the seat body, a groove is provided on the seat body, the tail end of the lubrication block is arranged in the groove, the front end of the lubrication block protrudes from the groove, and the unilateral OK clamp is pressed on the top of the lubrication block.

5. A rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that: A limiting block is provided on a side of the slideway away from the sliding block. The limiting block is provided with a mounting hole. The end of the screw rod is rotatably arranged in the mounting hole.

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