Urban rail vehicle wheel set running-in and friction transmission test bed

Abstract

The utility model discloses an urban rail vehicle wheel set running-in and friction transmission test bench, which comprises two symmetrically arranged support frames and a fixed frame arranged on one side of the two support frames, a wheel set is arranged on wheel shafts on two sides of a gear box, and the gear box and the wheel set are in a stable horizontal suspension state through the two support frames and the fixed frame; a cross-shaped sliding table is further arranged on the belt wheel side of the gear box, and the input shaft belt wheel transmission is in transmission connection with the belt wheel of the gear box through a transmission belt; a fixed base is arranged on the other sides of the two supporting frames, and a friction transmission mechanism is installed on the fixed base in a sliding mode. After the wheel edges of the two power friction wheels on the friction transmission mechanism are attached to the wheel edges of the wheel pairs, the two power friction wheels are driven to rotate through the double-shaft driving motor, and the wheel pairs are driven to rotate through friction force. According to the utility model, the stability during a running-in test and a friction transmission test can be improved, the friction transmission pressure can be balanced, the abrasion of the friction wheel is reduced, and the service life of the friction wheel is prolonged.

Description

Technical Field

[0001] The utility model relates to a running-in and friction transmission test bench for urban rail vehicle wheelsets, belonging to the technical field of wheelset performance testing. Background Art

[0002] The gearbox wheelset is one of the most important components in the running gear of urban rail vehicles, so it is necessary to conduct running-in and stability tests on the wheelset. However, during the running-in test of the existing gearbox wheelset, the transmission mode is a rigid connection, which causes large vibrations when running at high speeds. And when performing stability testing (friction transmission), the transmission output power sources of the two friction wheels are different, resulting in unstable transmission, which can easily cause the radial pressure of the two friction wheels to increase, resulting in increased wear of the friction wheels, especially under high-speed operation. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model provides a running-in and friction transmission test bench for urban rail vehicle wheelsets, which can improve the stability during the running-in test and the friction transmission test, balance the friction transmission pressure, reduce the wear of the friction wheels, and extend the service life of the friction wheels.

[0004] The technical solution adopted by the utility model is:

[0005] A running-in and friction transmission test bench for urban rail vehicle wheelsets, comprising two symmetrically arranged support frames and a fixing frame arranged on one side of the two support frames, wherein the two support frames are used to fix the bearing seats at the ends of the wheel axles at both ends of the gear box; the wheelset is installed on the wheel axles at both sides of the gear box; the fixing frame is used to fix the side end of the gear box; the gear box and the wheelset are in a stable horizontal suspended state through the two support frames and the fixing frame;

[0006] A cross slide is also provided on the pulley side of the gear box, which is used to fix the input shaft pulley transmission and can drive the input shaft pulley transmission to move longitudinally or transversely; the input shaft pulley transmission is connected to the pulley transmission of the gear box through a transmission belt, and drives the pulley of the gear box to rotate through the transmission belt when in motion, and the pulley of the gear box can drive the wheel axle and the wheelset to rotate relative to the support frame when rotating;

[0007] A fixed base is provided on the other side of the two support frames, and a friction transmission mechanism capable of approaching or moving away from the wheelset is slidably installed on the fixed base; the friction transmission mechanism comprises a sliding base and two power friction wheels symmetrically mounted on both sides of the sliding base and arranged corresponding to the wheelset; a dual-axis drive motor is installed on the sliding base between the two power friction wheels, and the output shafts at both ends of the dual-axis drive motor are fixedly connected to the shaft body of the power friction wheel on the corresponding side;

[0008] After the wheel edges of the two power friction wheels are fitted with the wheel edges of the wheelset, the two power friction wheels are driven to rotate by the dual-axis driving motor and the wheelset is driven to rotate by the friction force.

[0009] Preferably, the fixing frame is a lifting type fixing frame, and the side end of the gear box is fixedly connected to the top end of the lifting type fixing frame.

[0010] Preferably, the cross slide comprises a support base, a linear module 1 is mounted on the support base, and a linear module 2 is mounted on the slide of the linear module 1;

[0011] The linear module 1 and the linear module 2 are arranged vertically, and one of the linear module 1 and the linear module 2 is arranged parallel to the gear box;

[0012] The input shaft pulley drive is installed on the slide of linear module two.

[0013] Preferably, the linear module 1 and the linear module 2 are both hand-cranked linear modules.

[0014] Preferably, the input shaft pulley is a three-phase asynchronous motor.

[0015] Preferably, two linear guide rails parallel to the wheel set are arranged at both ends of the fixed base, and a sliding block slidably connected to the corresponding side linear guide rails is installed under the sliding base;

[0016] A plurality of telescopic devices connected to the sliding base and used for driving the sliding base to slide along the linear guide rail are also installed on the side of the fixed base away from the gear box.

[0017] Preferably, the power friction wheel is mounted on the sliding base via a bearing bracket, and the power friction wheel is connected to the bearing bracket for relative rotation.

[0018] Preferably, the two actuator shafts of the dual-shaft drive motor are fixedly connected to the shafts of the power friction wheels on the corresponding sides via a spline coupling.

[0019] Preferably, a protective cover is installed outside the spline coupling and the power friction wheel.

[0020] The beneficial effects of the utility model are:

[0021] 1. A triangular structure is formed by two support frames and a fixed frame, which can provide stability for the gearbox and wheel set support, and can reduce the vibration effect generated during the test by belt transmission drive; and the use of a cross slide can drive the input shaft pulley to drive longitudinal or lateral displacement, which can facilitate the installation of the transmission belt and the adjustment of the tension, and improve the reliability of the transmission effect;

[0022] 2. The dual-axis drive motor is used to drive the two power friction wheels with the same axis and power transmission, which can realize the 0-160km / h power friction transmission of urban rail vehicle wheels. It has stable operation, can effectively reduce the wear of the transmission friction wheels, and extend the life of the friction wheels; and the shafts of the two power friction wheels and the output shafts at both ends of the dual-axis drive motor are connected and driven by spline couplings, which is convenient for the axial adjustment of the power friction wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a top view of the test bench (the transmission belt is omitted);

[0024] Figure 2 This is the front view of the partial structure of the test bench;

[0025] Figure 3 It is a three-dimensional diagram of some structures of the test bench;

[0026] Figure 4 This is a three-dimensional diagram of some structures of the test bench.

[0027] The main reference numerals in the figure have the following meanings:

[0028] 1. Support frame, 2. Fixed frame, 3. Gear box, 4. Axle, 5. Bearing seat, 6. Wheel set, 7. Cross slide, 8. Support base, 9. Linear module one, 10. Linear module two, 11. Input shaft pulley drive, 12. Drive belt, 13. Fixed base, 14. Linear guide, 15. Sliding base, 16. Telescopic device, 17. Power friction wheel, 18. Bearing bracket, 19. Dual-axis drive motor, 20. Spline coupling, 21. Protective cover. DETAILED DESCRIPTION

[0029] The utility model is specifically introduced below in conjunction with the accompanying drawings and embodiments.

[0030] This embodiment is a running-in and friction transmission test bench for urban rail vehicle wheelsets. Figure 1-2 As shown, it includes two symmetrically arranged support frames 1 and a fixing frame 2 arranged on one side of the two support frames 1, the two support frames 1 are used to fix the bearing seats 5 at the ends of the wheel axles 4 at both ends of the gear box 3; the wheel set 6 is installed on the wheel axles 4 on both sides of the gear box 3; the fixing frame 2 is used to fix the side end of the gear box 3, and the side end of the gear box 3 is fixedly connected to the top of the fixing frame 2. In actual application, the fixing frame 2 can adopt a lifting structure to meet the needs of fixing different types of gear boxes 3, so that it can cooperate with the two support frames 1 to make the gear box 3 and the wheel set 6 in a stable horizontal suspended state.

[0031] A cross slide 7 is also provided on the pulley side of the gear box 3, and the cross slide 7 includes a supporting base 8, on which a hand-cranked linear module 1 9 is installed, and on the slide of the linear module 1 9 a hand-cranked linear module 2 10 is installed; the linear module 1 9 and the linear module 2 10 are vertically arranged, and the linear module 2 10 and the gear box 3 are parallelly arranged.

[0032] An input shaft pulley transmission 11 is installed on the slide of the linear module 2 10. The input shaft pulley transmission 11 is connected to the pulley of the gear box 3 through the transmission belt 12, and the pulley of the gear box 3 is driven to rotate through the transmission belt 12 during operation, and the pulley of the gear box 3 can drive the wheel axle 4 and the wheel set 6 to rotate when rotating; the longitudinal or lateral displacement of the input shaft pulley transmission 11 can be achieved through the cross slide 7, which can facilitate the installation of the transmission belt 12 and the adjustment of the tension of the transmission belt 12, so as to improve the reliability of the transmission effect. In actual application, the input shaft pulley transmission 11 uses a three-phase asynchronous motor, and the transmission belt 12 uses a V-belt, and the running-in test of the wheel set 6 is achieved through the acceleration and deceleration and forward and reverse rotation of the three-phase asynchronous motor.

[0033] In actual application, the wheelset 6, the gearbox 3, and the axle 4 are an integrated structure. After the integrated structure is fixed to the two support frames 1 and the fixing frame 2, the input shaft pulley transmission 11 is started to realize the running-in test of the wheelset 6.

[0034] See also Figure 1 , 3 As shown in , 4, a fixed base 13 is provided on the other side of the two support frames 1, two linear guide rails 14 parallel to the wheel set 6 are provided at both ends of the fixed base 13, a sliding base 15 is provided above the linear guide rail 14 through a sliding block, and two telescopic devices 16 connected to the sliding base 15 and used for driving the sliding base 15 to slide along the linear guide rail 14 are also installed on the side of the fixed base 13 away from the gear box 3.

[0035] Two power friction wheels 17 corresponding to the wheelset 6 on the axle 4 of the gear box 3 are symmetrically mounted on both sides of the sliding base 15. The power friction wheels 17 are mounted on the sliding base 15 through a bearing bracket 18, and the power friction wheels 17 are connected to the bearing bracket 18 for relative rotation; a dual-axis drive motor 19 is installed on the sliding base 15 between the two power friction wheels 17, and the output shafts at both ends of the dual-axis drive motor 19 are fixedly connected to the shaft body of the power friction wheel 17 on the corresponding side through a spline coupling 20; after the wheel edges of the two power friction wheels 17 are fitted with the wheel edges of the wheelset 6, the two power friction wheels 17 are driven to rotate by the dual-axis drive motor 19 and the wheelset 6 is driven to rotate by friction.

[0036] In actual application, a cylinder can be selected for the telescopic device 16, and the feeding and retracting actions of the power friction wheel 17 are realized by double cylinders, and the synchronization of the actions of the two cylinders is realized by a speed regulating valve; due to the different wheel diameter tolerances of the wheelset 6, different points on the contact surface of the wheelset 6 will produce different pressures on the surface of the power friction wheel 17, but the cylinder startup compression amount is large, which can alleviate the pressure change.

[0037] After the running-in test of the wheelset 6 is completed, the telescopic device 16 is started to drive the sliding base 15 to move toward the wheelset 6, so that the power friction wheel 17 fits with the wheelset 6, and then the dual-axis output motor is started to drive the two power friction wheels 17 to rotate synchronously, and the friction transmission test can be carried out by driving the wheelset 6 to rotate through friction force.

[0038] In actual application, there is no specific order for running-in test and friction transmission test.

[0039] Since the power friction wheel 17 is made of ultra-high molecular polyethylene, it will melt due to heat during the friction transmission test, and the melt will splash under high-speed rotation. In order to avoid burns to the human body caused by the splashing, a protective cover 21 is also installed outside the spline coupling 20 and the power friction wheel 17.

[0040] The above is only a preferred implementation of the utility model patent. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model patent. These improvements and modifications should also be regarded as the protection scope of the utility model patent.

Claims

1. A running-in and friction transmission test bench for urban rail vehicle wheelsets, characterized in that: It includes two symmetrically arranged support frames and a fixing frame arranged on one side of the two support frames, the two support frames are used to fix the bearing seats at the ends of the wheel axles at both ends of the gear box; the wheelset is installed on the wheel axles on both sides of the gear box; the fixing frame is used to fix the side end of the gear box; the gear box and the wheelset are in a stable horizontal suspended state through the two support frames and the fixing frame; A cross slide is also provided on the pulley side of the gear box, which is used to fix the input shaft pulley transmission and can drive the input shaft pulley transmission to move longitudinally or transversely; the input shaft pulley transmission is connected to the pulley transmission of the gear box through a transmission belt, and drives the pulley of the gear box to rotate through the transmission belt when in motion, and the pulley of the gear box can drive the wheel axle and the wheelset to rotate relative to the support frame when rotating; A fixed base is provided on the other side of the two support frames, and a friction transmission mechanism capable of approaching or moving away from the wheelset is slidably installed on the fixed base; the friction transmission mechanism comprises a sliding base and two power friction wheels symmetrically mounted on both sides of the sliding base and arranged corresponding to the wheelset; a dual-axis drive motor is installed on the sliding base between the two power friction wheels, and the output shafts at both ends of the dual-axis drive motor are fixedly connected to the shaft body of the power friction wheel on the corresponding side; After the wheel edges of the two power friction wheels are fitted with the wheel edges of the wheelset, the two power friction wheels are driven to rotate by the dual-axis driving motor and the wheelset is driven to rotate by the friction force.

2. The urban rail vehicle wheelset running-in and friction transmission test bench according to claim 1, characterized in that: The fixing frame is a lifting type fixing frame, and the side end of the gear box is fixedly connected to the top end of the lifting type fixing frame.

3. The urban rail vehicle wheelset running-in and friction transmission test bench according to claim 1, characterized in that: The cross slide comprises a support base, a linear module 1 is installed on the support base, and a linear module 2 is installed on the slide of the linear module 1; The linear module 1 and the linear module 2 are arranged vertically, and one of the linear module 1 and the linear module 2 is arranged parallel to the gear box; The input shaft pulley drive is installed on the slide of linear module two.

4. The urban rail vehicle wheelset running-in and friction transmission test bench according to claim 3, characterized in that: The linear module 1 and the linear module 2 are both hand-cranked linear modules.

5. A running-in and friction transmission test bench for urban rail vehicle wheelsets according to any one of claims 1 or 3, characterized in that: The input shaft pulley drive is a three-phase asynchronous motor.

6. The urban rail vehicle wheelset running-in and friction transmission test bench according to claim 1, characterized in that: Two linear guide rails parallel to the wheel set are arranged at both ends of the fixed base, and a sliding block slidably connected to the corresponding linear guide rails is installed under the sliding base; A plurality of telescopic devices connected to the sliding base and used for driving the sliding base to slide along the linear guide rail are also installed on the side of the fixed base away from the gear box.

7. The urban rail vehicle wheelset running-in and friction transmission test bench according to claim 1, characterized in that: The power friction wheel is mounted on the sliding base via a bearing bracket, and the shaft body of the power friction wheel is connected to the bearing bracket for relative rotation.

8. The urban rail vehicle wheelset running-in and friction transmission test bench according to claim 1, characterized in that: The two execution shafts of the dual-shaft drive motor are fixedly connected to the shaft bodies of the power friction wheels on the corresponding sides through a spline coupling.

9. The urban rail vehicle wheelset running-in and friction transmission test bench according to claim 8, characterized in that: A protective cover is also installed outside the coupling and the power friction wheel.

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