Gearbox running-in test bench for urban rail vehicle
By designing the urban rail vehicle gearbox running test bench, the support table, thimble tailstock and cross slide table are used to achieve stable clamping and transmission test of the gearbox, the problem that the existing technology cannot detect vehicle speeds above 80km/h is solved, and the problem of improving the speed of 80km/h is improved. Test stability and safety performance to ensure the detection accuracy of gearbox parts.
Patent Information
- Application Number
- CN202420020062.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-01-04
AI Technical Summary
The existing urban rail vehicle gearbox detection equipment cannot meet the speed detection of more than 80km/h, and the clamping mechanism is prone to failure at high speeds, resulting in gearbox falling off and safety hazards, and it is impossible to effectively detect the quality and assembly problems of the gearbox.
A test bench for the gearbox of the urban rail vehicle was designed, using a symmetrical support table and support frame to support the gear box, the thimble tail seat is clamped, the cross-sliding table drives the input shaft pulley transmission, and is equipped with vibration and temperature sensors , ensure the stable test of the gearbox at a speed of 0-160km/h.
Through this test bench, the transmission test of the gearbox at a speed of 0-160km/h is realized, which improves the test stability and safety performance, reduces vibration, and ensures the quality of gearbox parts and the inspection accuracy of assembly.
Smart Images
Figure CN222318445U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a running-in test bench for a gearbox of an urban rail vehicle, and belongs to the technical field of testing gearboxes of urban rail vehicles. Background Art
[0002] The gearbox is one of the most important parts in the running gear of urban rail vehicles. The quality and assembly of the gearbox parts directly affect the driving safety of subways and light rails. The weight of the railway locomotive gearbox itself is ≥500KG. The original clamping mechanism is prone to jumping and serious heating at a speed of 80km / h, so it cannot meet the gearbox detection at a speed above 80km / h. In addition, there is no support at the bottom of the gearbox when it is in motion. If the clamping device fails, the gearbox will automatically fall off, causing damage to the gearbox and even personal accidents. Utility Model Content
[0003] The utility model aims to provide a running-in test bench for a gearbox of an urban rail vehicle. The test bench has reliable operation and can realize transmission test of the gearbox of an urban rail vehicle at a speed of 0-160 km / h.
[0004] The technical solution adopted by the utility model is:
[0005] A running-in test bench for a gearbox of an urban rail vehicle comprises two symmetrically arranged support platforms and a support frame arranged on one side of the two support platforms, wherein the two support platforms are used to support the axle of the gearbox, and the support frame is used to support the side end of the gearbox, and the gearbox is placed in a stable horizontal suspended state through the two support platforms and the support frame;
[0006] Two ejector tailstocks are symmetrically arranged on the side of the two support platforms away from each other, and the top shafts of the two ejector tailstocks are embedded in the embedded grooves of the wheel shafts on the corresponding sides of the gear box;
[0007] A cross slide is also provided on the pulley side of the gearbox, which is used to fix the input shaft pulley drive and can drive the fixed input shaft pulley drive to move longitudinally or transversely;
[0008] The input shaft pulley is connected to the pulley of the gear box through a transmission belt, and drives the pulley of the gear box to rotate through the transmission belt when in action, and the pulley of the gear box can drive the wheel shaft to rotate relative to the ejector tailstock when rotating;
[0009] A sensor is also installed on the gearbox.
[0010] Preferably, the support platform comprises an axle box support and an axle bracket installed on the top of the axle box support, and a notch for the axle of the gear box to be embedded is formed on the top of the axle bracket.
[0011] Preferably, the support frame is a lifting support frame.
[0012] Preferably, the cross slide comprises a base, a linear module 1 is mounted on the base, and a linear module 2 is mounted on the slide of the linear module 1;
[0013] 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 supporting gear box;
[0014] The input shaft pulley drive is installed on the slide of linear module two.
[0015] Preferably, the linear module 1 and the linear module 2 are both hand-cranked linear modules.
[0016] Preferably, the two ejector tailstocks include a manual ejector tailstock and a pneumatic ejector tailstock.
[0017] Preferably, the input shaft pulley is a three-phase asynchronous motor.
[0018] Preferably, the sensor includes a vibration sensor and a temperature sensor.
[0019] The beneficial effects of the utility model are:
[0020] 1. A triangular structure is formed by two support platforms and a support frame, which can provide stability for the gearbox support and reduce vibration during testing; and the gearbox axle is clamped by two ejector tailstocks, which can meet the relative rotation requirements, improve the stability during testing, and improve safety performance;
[0021] 2. The use of a cross slide can drive the input shaft pulley to move longitudinally or transversely, which can facilitate the installation of the transmission belt and the adjustment of the tension, and improve the reliability of the transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is the main view of the running-in test bench;
[0023] Figure 2 This is a top view of the running-in test bench;
[0024] The main reference numerals in the figure have the following meanings:
[0025] 1. Support table, 2. Support frame, 3. Axle box support, 4. Axle bracket, 5. Manual ejector tailstock, 6. Pneumatic ejector tailstock, 7. Cross slide, 8. Base, 9. Linear module one, 10. Linear module two, 11. Input shaft pulley drive. DETAILED DESCRIPTION
[0026] The utility model is specifically introduced below in conjunction with the accompanying drawings and embodiments.
[0027] like Figure 1-2As shown: This embodiment is a running-in test bench for gearboxes of urban rail vehicles, comprising two symmetrically arranged support platforms 1 and a lifting support frame 2 arranged on one side of the two support platforms 1, each support platform 1 comprises an axle box support 3 and an axle bracket 4 installed on the top of the axle box support 3, and a groove for embedding the axle of the gearbox is formed on the top of the axle bracket 4; the support frame 2 is used to support the side end of the gearbox, and the gearbox is in a stable horizontal suspended state through the two support platforms 1 and the support frame 2.
[0028] Two ejector tailstocks are symmetrically arranged on the side away from each other of the two support platforms 1. The two ejector tailstocks are respectively a manual ejector tailstock 5 and a pneumatic ejector tailstock 6. Both the manual ejector tailstock 5 and the pneumatic ejector tailstock 6 are Woyuan WY350 models. In actual operation, firstly, an ejector tailstock with a suitable top shaft diameter is selected according to the stress and fatigue strength of the gearbox, and then the wheel axle on one side of the gearbox is clamped by adjusting the manual ejector tailstock 5, and then the wheel axle on the other side of the gearbox is clamped by the pneumatic ejector tailstock 6, and the state of the ejector shaft is locked by the locking device of the manual ejector tailstock 5 and the pneumatic ejector tailstock 6 to prevent the locking of the pneumatic ejector tailstock 6 from failing. The two ejector tailstocks lock the gearbox axle by embedding the top shaft into the groove of the corresponding side axle of the gearbox. The continuous air intake of the pneumatic ejector tailstock 6 can ensure that the top shaft can still keep the wheel axle clamped when the gearbox runs at a speed of 160km / h.
[0029] A cross slide 7 is also provided on the pulley side of the gear box, and the cross slide 7 includes a 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 is vertically arranged with the linear module 2 10, and the linear module 2 10 is parallelly arranged with the gear box.
[0030] An input shaft pulley drive 11 is installed on the slide of the linear module 2 10. The input shaft pulley drive 11 is connected to the pulley of the gear box through a transmission belt, and the pulley of the gear box is driven to rotate through the transmission belt when in motion, and the pulley of the gear box can drive the wheel shaft to rotate relative to the ejector tailstock when rotating; the longitudinal or lateral displacement of the input shaft pulley drive 11 can be achieved through the cross slide 7, which can facilitate the installation of the transmission belt and the adjustment of the tension of the transmission belt, and improve the reliability of the transmission effect. In actual application, the input shaft pulley drive 11 uses a three-phase asynchronous motor, and the transmission belt uses a V-belt. The running-in test of the gear box is achieved through the acceleration, deceleration and forward and reverse rotation of the three-phase asynchronous motor.
[0031] The gearbox is also equipped with sensors, including vibration sensors and temperature sensors, which are connected to external processors. During the test, the data from the vibration sensors and temperature sensors are analyzed to verify the correctness of the assembly process of each component and the processing of the installed parts, ensuring that the entire gearbox can operate safely and effectively after being installed on the vehicle.
[0032] The running-in test bench has excellent stability and safety performance, can reduce the vibration generated during operation, and can realize the transmission test of urban rail vehicle gearboxes at 0-160km / h.
[0033] 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 test bench for urban rail vehicle gearbox, characterized in that: It includes two symmetrically arranged support platforms and a support frame arranged on one side of the two support platforms, the two support platforms are used to support the axle of the gear box, and the support frame is used to support the side end of the gear box, and the gear box is in a stable horizontal suspended state through the two support platforms and the support frame; Two ejector tailstocks are symmetrically arranged on the side of the two support platforms away from each other, and the top shafts of the two ejector tailstocks are embedded in the embedded grooves of the wheel shafts on the corresponding sides of the gear box; A cross slide is also provided on the pulley side of the gearbox, which is used to fix the input shaft pulley drive and can drive the fixed input shaft pulley drive to move longitudinally or transversely; The input shaft pulley is connected to the pulley of the gear box through a transmission belt, and drives the pulley of the gear box to rotate through the transmission belt when in action, and the pulley of the gear box can drive the wheel shaft to rotate relative to the ejector tailstock when rotating; A sensor is also installed on the gearbox.
2. The urban rail vehicle gearbox running-in test bench according to claim 1, characterized in that: The support platform comprises an axle box support and an axle bracket installed on the top of the axle box support, and a notch for embedding the axle of the gear box is formed on the top of the axle bracket.
3. The urban rail vehicle gearbox running-in test bench according to claim 1, characterized in that: The support frame is a lifting support frame.
4. The urban rail vehicle gearbox running-in test bench according to claim 1, characterized in that: The cross slide comprises a base, a linear module 1 is installed on the 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 supporting gear box; The input shaft pulley drive is installed on the slide of linear module two.
5. The urban rail vehicle gearbox running-in test bench according to claim 4, characterized in that: The linear module 1 and the linear module 2 are both hand-cranked linear modules.
6. The urban rail vehicle gearbox running-in test bench according to claim 1, characterized in that: The two ejector tailstocks include a manual ejector tailstock and a pneumatic ejector tailstock.
7. A running-in test bench for urban rail vehicle gearbox according to any one of claims 1 or 4, characterized in that: The input shaft pulley drive is a three-phase asynchronous motor.
8. The urban rail vehicle gearbox running-in test bench according to claim 1, characterized in that: The sensors include a vibration sensor and a temperature sensor.