CN103983457A - High-speed railway bearing matched loose simulator stand - Google Patents
High-speed railway bearing matched loose simulator stand Download PDFInfo
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- CN103983457A CN103983457A CN201410223074.1A CN201410223074A CN103983457A CN 103983457 A CN103983457 A CN 103983457A CN 201410223074 A CN201410223074 A CN 201410223074A CN 103983457 A CN103983457 A CN 103983457A
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Abstract
The invention discloses a high-speed railway bearing matched loose simulator stand. A main system is installed at the upper portion of a fixed frame. A driving motor drives a main shaft to rotate through a synchronous belt. A radial loading device and an axial loading device are both connected with a measured bearing pedestal and located at the lower portion of the frame. Compared with the prior art, the high-speed railway bearing matched loose simulator stand has the advantages that loading is achieved through a weight-lever system, cost is low, the stand is easy to obtain, and axial loading can be achieved in a grading mode through a stepping motor, a lead screw and a dual-sliding-block mechanism in the stand and corresponds to the straight line running state, the corner running state and the crossway running state of an actual high-speed railway respectively.
Description
Technical field
The present invention relates to a kind of experimental provision for rolling bearing inner ring and axle journal matching loose are tested, specifically, relate to a kind of testing table of simulating high-speed railway bearing inner race and axle journal matching loose and testing.
Background technology
Along with the develop rapidly of high-speed railway, its security is more and more paid close attention to by people, high-speed railway rolling bearing is the important walking support component of rolling stock, it is loosening that its inner ring coordinates with main shaft axle journal is the one of the main reasons that causes the faults such as overheating of axle bearing, owing to can not directly measuring actual stress strain value at mating area, so be difficult to carry out early warning at the loosening initial stage occurring, China can only carry out on-line operation status monitoring by the method for infra-red detection axle temperature to Passenger Car Rolling Bearings in present stage, but temperature rise is the symptom in late period of bearing fault, temperature rise reaches after certain value, may there is at short notice overheating of axle bearing phenomenon, therefore must carry out analysis of experiments to this looseness fault process, find out the feature that changes fault, for Fault Mechanism Analysis and the Research on Nonlinear Dynamics of looseness fault provide related experiment data.
Existing bearing test device is mostly that bearing performance and life-span are tested, there is no special testing table for the matching loose of bearing inner race and axle journal, therefore be badly in need of a kind of testing table that can simulate this looseness fault of design, abnormal heating phenomenon while reproducing matching loose, provides tachnical storage for avoiding cutting the major accident such as axle and derailing.
Summary of the invention
The object of this invention is to provide a kind of testing table that can simulate high-speed railway bearing inner race and axle journal matching loose and test.
Technical scheme of the present invention is: a kind of testing table of simulating high-speed railway bearing inner race and axle journal matching loose and testing, it is characterized in that: this testing table comprises framework, main system, drive motor, radial loaded device and axial loading device, described main system is arranged on the top of fixed frame, main system comprises spring bearing, main shaft and measured bearing, main system is cantilever design, synchronous pulley is positioned at the centre of main shaft, spring bearing and measured bearing installation position respectively have two, be distributed in the both sides of main shaft, supporting bearing base is located between measured bearing installation position and synchronous pulley, measured bearing is positioned at main the tip of the axis, main shaft drives rotation by drive motor by Timing Belt, described radial loaded device is all connected with measured axis bearing with axial loading device, is positioned at the bottom of framework.
Preferably, described main system comprises spring bearing, main shaft and measured bearing, two measured bearing inner rings are different from the cooperation of main shaft axle journal, one is interference fit, another is transition fit, in two measured axis bearings, be respectively equipped with temperature sensor, bearing inner race speed probe, acceleration transducer, main shaft is provided with speed probe.
Preferably, described radial loaded device comprises 1 grade of lever, 2 grades of levers, loads counterweight, between 1 grade of lever and test bearing seat, have governor motion, the connecting rod between 1 grade of lever and 2 grades of levers has guiding mechanism, and the radial loaded device of two measured bearings is symmetrical.
Preferably, described axial loading device comprises pulley mechanism, 1 grade of lever, 2 grades of levers, loads counterweight, weight tray, double-slider mechanism, screw mandrel, stepper motor, loading counterweight is two, between pulley mechanism and test bearing seat, there is steel wire rope tensioning mechanism, connecting rod between 1 grade of lever and 2 grades of levers has guiding mechanism, the radial loaded device of two measured bearings is symmetrical, and the weight tray of both sides, double-slider mechanism, screw mandrel are driven by same stepper motor.
The present invention's beneficial effect is compared with prior art:
This testing table adopts counterweight-lever system to load, and low being easy to of cost realized, and axially loading can realize hierarchical loading by stepper motor, screw mandrel, double-slider mechanism wherein, corresponding to actual bullet train straight line, bend, three kinds, turnout running status.
Main shaft can be simulated high-speed railway bearing inner race and axle journal matching loose and carry out contrast test from the different cooperations of two measured bearings, abnormal heating phenomenon can reproduce matching loose time, can be to the rotating speed of main shaft, the temperature of bearing, inner ring rotating speed, acceleration signal are monitored, for Fault Mechanism Analysis and the Research on Nonlinear Dynamics of looseness fault provide related experiment data.
Brief description of the drawings
Fig. 1 is testing table one-piece construction schematic diagram of the present invention;
Fig. 2 is testing table main system structural representation of the present invention;
Fig. 3 is testing table radial loaded apparatus structure schematic diagram of the present invention;
Fig. 4 is testing table axial loading device structural representation of the present invention;
In figure, 1-framework, 2-axial loading device, 3-main system, 4-drive motor, 5-radial loaded device, 6-acceleration transducer, 7-temperature sensor, 8-inner ring speed probe, 9-spring bearing, 10-synchronous pulley, 11-main shaft, 12-measured bearing, 13-governor motion, 14-1 level lever, 15-connecting rod, 16-guiding mechanism, 17-2 level lever, 18-loads counterweight, 19-strainer, 20-pulley mechanism, 21-1 level lever, 22-connecting rod, 23-guiding mechanism, 24-2 level lever, 25-loads counterweight, 26-weight tray, 27-double-slider mechanism, 28-screw mandrel, 29-stepper motor.
Embodiment
Referring to Fig. 1, a kind of testing table of simulating high-speed railway bearing inner race and axle journal matching loose and testing, this testing table comprises that framework 1, main system 3, drive motor 4, radial loaded device 5 and axial loading device 2 form, main system 3 is arranged on the top of fixed frame 1, and drive motor 4 rotates by Timing Belt drive shaft 11; Radial loaded device 5 is all connected with measured axis bearing with axial loading device 2, is positioned at the bottom of framework 1.
Referring to Fig. 2, main system 3 comprises spring bearing 9, main shaft 11 and measured bearing 12, main system 3 is cantilever design, synchronous pulley 10 is positioned at the centre of main shaft 11, spring bearing 9 and measured bearing 12 installation positions respectively have two, be distributed in the both sides of main shaft 11, supporting bearing base is located between measured bearing installation position and synchronous pulley 10, measured bearing 12 is positioned at the end of main shaft 11, main shaft 11 drives rotation by drive motor 4 by Timing Belt, in measured axis bearing, there are temperature sensor 7 and acceleration transducer 6, inner ring speed probe 8 is installed on bearing (ball) cover, rotating speed contrast by inner ring and main shaft judges loosening situation.
Referring to Fig. 3, radial loaded device 5 comprises 13,1 grade of lever 14 of governor motion, connecting rod 15,16,2 grades of levers 17 of guiding mechanism and loads counterweight 18, two-stage lever altogether can reinforcement 50 times, the end of governor motion 13 connects 1 grade of lever 14,1 grade of lever 14 is by connecting rod 15 connection guiding mechanisms 16, guiding mechanism 16 connects one end of 2 grades of levers 17 of level, and 2 grades of lever 17 other ends connect loading counterweight 18
Governor motion 13 is vertically adjustable, and range of adjustment is ± 5mm that guiding mechanism 16 can limit the direction of motion of pull bar 15.
Referring to Fig. 4, axial loading device 2 comprises strainer 19, pulley mechanism 20, 1 grade of lever 21, pull bar 22, guiding mechanism 23, 2 grades of levers 24, load counterweight 25, weight tray 26, double-slider mechanism 27, screw mandrel 28 and stepper motor 29, strainer 19 and pulley mechanism 20 can be by the steel wire tensionings between connecting test bearing seat and 1 grade of lever 21, pulley mechanism 15 is used for changing the direction of transfer of power, two-stage lever altogether can reinforcement 50 times, guiding mechanism 23 can limit the direction of motion of pull bar 22, guiding mechanism 23 connects one end of 2 grades of levers 24, the other end of 2 grades of levers 24 connects loading counterweight 25, stepper motor 29 drives screw mandrel 28, by double-slider mechanism 27, weight tray 26 is moved up and down, realize hierarchical loading.
Claims (4)
1. the loosening simulator stand of high-speed railway bearing fit, this testing table comprises framework, main system, drive motor, radial loaded device and axial loading device, it is characterized in that: main system is arranged on the top of fixed frame, drive motor rotates by Timing Belt drive shaft; Radial loaded device is all connected with measured axis bearing with axial loading device, is positioned at the bottom of framework.
2. the loosening simulator stand of high-speed railway bearing fit according to claim 1, it is characterized in that: main system comprises spring bearing, main shaft and measured bearing, main system is cantilever design, synchronous pulley is positioned at the centre of main shaft, spring bearing and measured bearing installation position respectively have two, be distributed in the both sides of main shaft, supporting bearing base is located between measured bearing installation position and synchronous pulley, measured bearing is positioned at main the tip of the axis, main shaft drives rotation by drive motor by Timing Belt, in measured axis bearing, there are temperature sensor and acceleration transducer, inner ring speed probe is installed on bearing (ball) cover, rotating speed contrast by inner ring and main shaft judges loosening situation.
3. the loosening simulator stand of high-speed railway bearing fit according to claim 1, it is characterized in that: described radial loaded device comprises governor motion, 1 grade of lever, connecting rod, guiding mechanism, 2 grades of levers and load counterweight, two-stage lever altogether can reinforcement 50 times, the end of governor motion connects 1 grade of lever, 1 grade of lever is by connecting rod connection guiding mechanism, guiding mechanism connects one end of 2 grades of levers of level, 2 grades of lever other ends connect loading counterweight, governor motion is vertically adjustable, range of adjustment is ± 5mm, guiding mechanism can limit the direction of motion of pull bar.
4. the loosening simulator stand of high-speed railway bearing fit according to claim 1, it is characterized in that: described axial loading device comprises strainer, pulley mechanism, 1 grade of lever, pull bar, guiding mechanism, 2 grades of levers, load counterweight, weight tray, double-slider mechanism, screw mandrel and stepper motor, strainer and pulley mechanism can be by the steel wire tensionings between connecting test bearing seat and 1 grade of lever, pulley mechanism is used for changing the direction of transfer of power, two-stage lever altogether can reinforcement 50 times, guiding mechanism can limit the direction of motion of pull bar, guiding mechanism connects one end of 2 grades of levers, the other end of 2 grades of levers connects loading counterweight, stepper motor drives screw mandrel, pass through double-slider mechanism, weight tray is moved up and down, realize hierarchical loading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223074.1A CN103983457A (en) | 2014-05-26 | 2014-05-26 | High-speed railway bearing matched loose simulator stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223074.1A CN103983457A (en) | 2014-05-26 | 2014-05-26 | High-speed railway bearing matched loose simulator stand |
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| CN103983457A true CN103983457A (en) | 2014-08-13 |
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| CN201410223074.1A Pending CN103983457A (en) | 2014-05-26 | 2014-05-26 | High-speed railway bearing matched loose simulator stand |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136470A (en) * | 2015-08-17 | 2015-12-09 | 南京汽车集团有限公司 | Automotive back door over-open loading device |
| CN110736673A (en) * | 2019-11-08 | 2020-01-31 | 中国矿业大学 | multi-wire spiral contact testing device and method in hoisting steel wire rope |
| CN113758707A (en) * | 2020-06-02 | 2021-12-07 | 株洲中车时代电气股份有限公司 | Axial force loading device for railway axle box bearing test |
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| JP2006017674A (en) * | 2004-07-05 | 2006-01-19 | Sumikin Kansai Kogyo Kk | Turning gear for detecting vibration of abnormality in bearing of railway rolling stock truck |
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| CN203858110U (en) * | 2014-05-26 | 2014-10-01 | 华东交通大学 | Simulation test bench for bearing cooperation and looseness of high speed railway |
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2014
- 2014-05-26 CN CN201410223074.1A patent/CN103983457A/en active Pending
Patent Citations (7)
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| JP2006017674A (en) * | 2004-07-05 | 2006-01-19 | Sumikin Kansai Kogyo Kk | Turning gear for detecting vibration of abnormality in bearing of railway rolling stock truck |
| JP2008082720A (en) * | 2006-09-26 | 2008-04-10 | Ntn Corp | Testing device of railway vehicle axle bearing |
| CN102445344A (en) * | 2011-12-26 | 2012-05-09 | 瓦房店轴承集团有限责任公司 | Heavy axle load railway bearing tester |
| CN102889991A (en) * | 2012-10-26 | 2013-01-23 | 浙江大学 | Bearing axially-symmetric loading mechanism of high speed railway |
| CN103353398A (en) * | 2013-07-29 | 2013-10-16 | 洛阳Lyc轴承有限公司 | Radial loading mechanism for high-speed heavy haul railway bearing testing stand |
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| 邢晓东 等: ""铁路轴承综合性能试验台机械结构设计与仿真"", 《铁道车辆》, vol. 52, no. 2, 28 February 2014 (2014-02-28), pages 29 - 32 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136470A (en) * | 2015-08-17 | 2015-12-09 | 南京汽车集团有限公司 | Automotive back door over-open loading device |
| CN110736673A (en) * | 2019-11-08 | 2020-01-31 | 中国矿业大学 | multi-wire spiral contact testing device and method in hoisting steel wire rope |
| CN110736673B (en) * | 2019-11-08 | 2021-06-08 | 中国矿业大学 | Device and method for testing internal multi-wire spiral contact of hoisting steel wire rope |
| CN113758707A (en) * | 2020-06-02 | 2021-12-07 | 株洲中车时代电气股份有限公司 | Axial force loading device for railway axle box bearing test |
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Application publication date: 20140813 |
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