CN208476709U - A kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism - Google Patents
A kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism Download PDFInfo
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- CN208476709U CN208476709U CN201821112690.XU CN201821112690U CN208476709U CN 208476709 U CN208476709 U CN 208476709U CN 201821112690 U CN201821112690 U CN 201821112690U CN 208476709 U CN208476709 U CN 208476709U
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Abstract
The utility model provides a kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism, it is equipped with rail including vertical depression mechanism, Level Promoting mechanism, wheel power mechanism, trolley, wheel, trolley, vertical depression mechanism is connected with wheel and vertical depression mechanism makes pressure wheel on rail；Wheel power mechanism is mounted in vertical depression mechanism, and wheel power mechanism driving wheel is rotated；Level Promoting mechanism is connected with trolley and Level Promoting mechanism trailer wagon is moved；The wheel-rail friction fatigue experimental device further includes the trolley anticollision mechanism for preventing trolley to be damaged.The beneficial effects of the utility model are: the trolley anticollision mechanism of the utility model uses hydraulic damper, load can be absorbed impact, trolley is formed and is protected, convenient for the long-time service of trolley.
Description
Technical field
The utility model relates to fatigue test system class more particularly to a kind of wheel-rail friction with trolley anticollision mechanism are tired
Labor experimental rig.
Background technique
Traffic power, railway are leading, since 21 century, with China's economy and science and technology greatly develop, for improve
The increasingly efficient living environment of people, railway passenger transport system is by original Maximum speed limit 120km/h till now most fast
350km/h, the transport of Heavy-Haul Railway high-volume also increasingly frequently, while obtaining efficient, damage by railway system's Wheel Rail Contact fatigue
It is also more prominent to hurt problem, heavily loaded, high speed premise is to must assure that traffic safety.Up to the present, Wheel/rail friction connects
The micromechanism of damage for touching fatigue forms a unified conclusion not yet, and the detection device of energy actual monitoring wheel track fatigue damage is even more
Blank.
The fatigue crack of rail is major hidden danger to traffic safety, and countries in the world have carried out greatly wheel rail rolling contact fatigue
The analysis and research of amount.The foundation for theoretically and testing link is provided for research wheel rail rolling contact fatigue, but domestic at present
The outer wheel track fatigue rig used is all single pass flexural fatigue mostly, and alternating download can not be arranged according to the actual situation
Lotus, various amplitude, the actual wheel rail rolling contact fatigue conditions of different frequency Imitating.
Utility model content
The utility model provides a kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism, including it is vertical under
Press mechanism, Level Promoting mechanism, wheel power mechanism, trolley, wheel, the trolley are equipped with rail, the vertical depression mechanism
It is connected with the wheel and the vertical depression mechanism makes the pressure wheel on the rail；The wheel power mechanism peace
In the vertical depression mechanism, the wheel power mechanism drives the wheel to be rotated；The Level Promoting mechanism
It is connected with the trolley and the Level Promoting mechanism draws the trolley and moved；The wheel-rail friction fatigue experimental device
It further include the trolley anticollision mechanism for preventing the trolley to be damaged.
The vertical depression mechanism includes bearing frame, first sensor, first axle, vertical hydraulic oil cylinder, the second hinge
Chain, compression crossbeam, pressure head, the bearing frame are equipped with the first sensor, install below the first sensor
First axle is stated, the vertical hydraulic oil cylinder is installed below the first axle, is equipped with below the vertical hydraulic oil cylinder
The second hinge, the second hinge lower section are equipped with the compression crossbeam, and the pressure head is mounted on the compression crossbeam,
The wheel is mounted on the pressure head.
The wheel power mechanism includes deceleration support, speed reducer, servo motor, and the deceleration support is mounted on the pressure head
On, the speed reducer is mounted on the deceleration support, the speed reducer is connected with the wheel, and the servo motor subtracts with described
Fast machine is connected.
The wheel-rail friction fatigue experimental device further includes reaction frame, and the reaction frame includes the first reaction frame, the
Five hinges, crossbeam, the second reaction frame, reaction beam, the compression crossbeam pass through the 5th hinge and the first counter-force frame
Frame connection, first reaction frame are connect by the crossbeam with second reaction frame, and the reaction beam is mounted on institute
It states on the second reaction frame.
The Level Promoting mechanism includes cross cylinder, second sensor, third hinge, cross cylinder push plate, the water
Flat oil cylinder one end is connected with the second sensor, and the pistons end of the cross cylinder is equipped with the third hinge, described
The cross cylinder push plate is installed, the cross cylinder push plate is mounted on the trolley in third hinge.
The second sensor is installed, the cross cylinder is mounted on described by the 4th hinge on the reaction beam
On two sensors.
The trolley anticollision mechanism includes the anticollision reaction frame positioned at the small front side, is equipped on the anticollision reaction frame
Hydraulic damper.
The rolling guide block of anti-lateral force is housed among the compression crossbeam and bearing frame.
The rail is pressed on the trolley by rail Anchor plate kit.
The beneficial effects of the utility model are: the trolley anticollision mechanism of the utility model uses hydraulic damper, can bear
Shock loading forms trolley and protects, convenient for the long-time service of trolley.
Detailed description of the invention
Fig. 1 is the wheel-rail friction fatigue experimental device structure chart of the utility model；
Fig. 2 is the wheel-rail friction fatigue experimental device side view of the utility model；
Fig. 3 is the trolley guide frame figure of the utility model.
Specific embodiment
As shown in Figure 1-3, the utility model discloses a kind of, the wheel-rail friction fatigue test with trolley anticollision mechanism is filled
It sets, including vertical depression mechanism, Level Promoting mechanism, wheel power mechanism, trolley 18, wheel 27, reaction frame, the trolley
18 are equipped with rail 19, and the vertical depression mechanism is connected with the wheel 27 and the vertical depression mechanism makes the wheel 27
It is pressed on the rail 19；The wheel power mechanism is mounted in the vertical depression mechanism, and the wheel power mechanism drives
The wheel 27 is moved to be rotated；The Level Promoting mechanism is connected with the trolley 18 and the Level Promoting mechanism is drawn
The trolley 18 is moved；The wheel-rail friction fatigue experimental device further includes the trolley anticollision for preventing the trolley 18 to be damaged
Mechanism, the wheel-rail friction fatigue experimental device further include the anti-laterally offset machine of trolley for preventing the trolley 18 from side offset occurs
Structure.
The vertical depression mechanism includes bearing frame 1, first sensor 2, first axle 3, vertical hydraulic oil cylinder 4,
Two hinge 5, compression crossbeam 6, pressure head 26, the bearing frame 1 are equipped with the first sensor 2, under the first sensor 2
Side is equipped with the first axle 3, and the vertical hydraulic oil cylinder 4, the vertical hydraulic oil are equipped with below the first axle 3
The second hinge 5 is installed below cylinder 4, the compression crossbeam 6 is installed below the second hinge 5, the pressure head 26 is pacified
On the compression crossbeam 6, the wheel 27 is mounted on the pressure head 26.
The wheel power mechanism includes deceleration support 28, speed reducer 29, servo motor 30, and the deceleration support 28 is mounted on institute
It states on pressure head 26, the speed reducer 29 is installed, the speed reducer 29 is connected with the wheel 27, described on the deceleration support 28
Servo motor 30 is connected with the speed reducer 29.
The reaction frame includes the first reaction frame 8, the 5th hinge, crossbeam 9, the second reaction frame 10, reaction beam 11,
The compression crossbeam 6 is connect by the 5th hinge with first reaction frame 8, and first reaction frame 8 passes through institute
It states crossbeam 9 to connect with second reaction frame 10, the reaction beam 11 is mounted on second reaction frame 10.
The Level Promoting mechanism includes cross cylinder 14, second sensor, third hinge 16, cross cylinder push plate 17,
Described 14 one end of cross cylinder is connected with the second sensor, and 15 end of piston of the cross cylinder 14 is equipped with described
Three hinges 16 are equipped with the cross cylinder push plate 17 in the third hinge 16, and the cross cylinder push plate 17 is mounted on institute
It states on trolley 18.
The second sensor is installed on reaction beam 11, the cross cylinder 14 by the 4th hinge, be mounted on it is described
In second sensor.
The trolley anticollision mechanism includes the anticollision reaction frame 24 positioned at 18 front of trolley, the anticollision reaction frame 24
It is upper that hydraulic damper 23 is housed.
The wheel-rail friction fatigue experimental device further includes bottom plate 25, and the anti-laterally offset mechanism of trolley includes guided way
21, guide wheel assemblies 22, the guided way 21 are mounted on the bottom plate 25, and the trolley 18 is equipped with guide wheel assemblies 22,
The guide wheel assemblies 22 cooperate with the guided way 21 to prevent the trolley 18 generation when moving on the guided way 21
Laterally offset.
The compression crossbeam 6 and the rolling guide block 31 that anti-lateral force is housed among bearing frame 1.
The rail 19 is pressed on the trolley 18 by rail Anchor plate kit 20.
The utility model is specially the wheel-rail friction fatigue experimental device of 30km/h a kind of, and the utility model uses binary channels
As a source of power, the cross cylinder 14 of a 200kN pushes trolley 18 to do with the rail 19 on trolley 18 to hydraulic cylinder back and forth
It moves back and forth, there is guided way 21 below trolley 18, guarantee that lateral displacement does not occur for trolley 18, directive wheel is housed on 18 bottom plate of trolley
22, directive wheel 22 is with the adjustable adhesive force with guided way 21 of strainer.The vertical hydraulic oil cylinder 4 of one 500kN passes through
Hinge beam mechanism compressed steel rail 19, rotation during upper pushing of wheel 27, by changing different frequencies with load, energy mould
Wheel-rail friction situation is drawn up, and then analyzes generated reason.0 °~5 ° of angle tune may be implemented in rail 19 on trolley 18
Section, can effectively simulate the stress condition of train during the turn, at the same can and the situation of train normal straight traveling carry out pair
Than obtaining data for analytical reason.14 rear of cross cylinder is equipped with reaction frame, reaction frame and cross cylinder 14 and is connected using hinge
It connects, can effectively prevent trolley 18 is caused oil cylinder stuck when moving back and forth by lateral force.18 end of trolley is equipped with trolley anticollision
Mechanism, trolley anticollision mechanism use hydraulic damper, can absorb impact load, are equipped in the lower section of trolley anticollision mechanism secondary anti-
Rubber is hit, double insurance is played the role of, trolley anticollision mechanism is mounted on reaction frame.Between vertical hydraulic oil cylinder 4 and wheel 27
It is connected using compression crossbeam 6 and pressure head 6, big load can be born to simulate heavy haul train stress of wheel track under different loads and rub
Wipe tired situation.Because wheel 27 and the tyre tread of 19 face contact of rail are outer circumference surfaces, there is certain gradient, therefore actual wheel
The stress condition of rail has the generation of lateral force, to solve influence of the lateral force to test result, below vertical hydraulic oil cylinder 4
Compression crossbeam 6 and bearing frame 1 between 4 rolling guide blocks 31 are housed, single rolling guide block 31 can bear maximum static
Pressurized system not sideslip under the action of by lateral force can be effectively ensured in 840kN, dynamic load 620kN.Because 27 diameter of wheel is huge
Greatly, therefore with wheel 27 compression member connected, which uses, breaks locking type structure, facilitates the later period with wheel change.
Guide wheel assemblies 22 are housed on trolley 18, move back and forth trolley 18 on guided way 21 lateral without generating
Offset.Anticollision reaction frame 24 is housed in front of trolley 18, hydraulic damper 23 is housed on anticollision reaction frame 24, whole system all connects
On bottom plate 25.
When this wheel track fatigue under scrubbing experimental rig works, 4 maximum working pressure (MWP) 500kN of vertical hydraulic oil cylinder passes through test
Software is adjustable in 0-500kN test pressure, and servo motor 30 makes the linear velocity speed 0- of wheel 27 after the deceleration of speed reducer 29
30km/h is adjustable, revolving speed 0-200 turns/min of wheel 27, speed to introduce >=5m/s of cross cylinder 14, needed for 1.5m total travel
Time 300ms, control valve fastest response time about 10ms is wanted to reach pre- fixed displacement, starting and deceleration, which amount to, needs the 20ms time,
The theoretical time that can be used for measuring is 280ms.If sample frequency is in 4K/s, total single valid data amount about 1.12K, about 0.8
Point/mm.This wheel track fatigue under scrubbing experimental rig is illustrated above.
The beneficial effects of the utility model are: this wheel track fatigue under scrubbing experimental rig is acted on using binary channels, use simultaneously
Powerful 30 acceleration and deceleration machine 29 of servo motor is rotated with motor car wheel 27, is able to achieve the rail 19 while wheel 27 rotates and is also existed
It moves reciprocatingly, increases wheel-rail friction loss in the unit time, test efficiency is significantly greatly increased, reduce energy consumption, comparison is previous
The sharpest edges of single channel testing equipment are can multi-faceted, multi-angle simulation wheel-rail friction fatigue test.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (9)
1. a kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism, it is characterised in that: including vertical depression mechanism,
Level Promoting mechanism, wheel power mechanism, trolley (18), wheel (27), the trolley (18) are equipped with rail (19), described vertical
Press mechanism is connected with the wheel (27) and the vertical depression mechanism makes the wheel (27) be pressed in the rail (19)
On；The wheel power mechanism is mounted in the vertical depression mechanism, and the wheel power mechanism drives the wheel (27)
It is rotated；The Level Promoting mechanism is connected with the trolley (18) and the trolley draws in the Level Promoting mechanism
(18) it is moved；The wheel-rail friction fatigue experimental device further includes the trolley anti-collision machine for preventing the trolley (18) to be damaged
Structure.
2. wheel-rail friction fatigue experimental device according to claim 1, it is characterised in that: the vertical depression mechanism includes
Bearing frame (1), first sensor (2), first axle (3), vertical hydraulic oil cylinder (4), second hinge (5), compression crossbeam
(6), pressure head (26), the bearing frame (1) are equipped with the first sensor (2), installation below the first sensor (2)
Have the first axle (3), the vertical hydraulic oil cylinder (4), the vertical hydraulic oil are installed below the first axle (3)
It is equipped with the second hinge (5) below cylinder (4), the compression crossbeam (6) is installed below the second hinge (5), it is described
Pressure head (26) is mounted on the compression crossbeam (6), and the wheel (27) is mounted on the pressure head (26).
3. wheel-rail friction fatigue experimental device according to claim 2, it is characterised in that: the wheel power mechanism includes
Deceleration support (28), speed reducer (29), servo motor (30), the deceleration support (28) is mounted on the pressure head (26), described to subtract
It is mounted on the speed reducer (29) on fast frame (28), the speed reducer (29) is connected with the wheel (27), the servo motor
(30) it is connected with the speed reducer (29).
4. wheel-rail friction fatigue experimental device according to claim 2, it is characterised in that: wheel-rail friction fatigue test dress
Setting further includes reaction frame, and the reaction frame includes the first reaction frame (8), the 5th hinge, crossbeam (9), the second counter-force frame
Frame (10), reaction beam (11), the compression crossbeam (6) are connect by the 5th hinge with first reaction frame (8), institute
It states the first reaction frame (8) to connect by the crossbeam (9) with second reaction frame (10), reaction beam (11) installation
On second reaction frame (10).
5. wheel-rail friction fatigue experimental device according to claim 4, it is characterised in that: the Level Promoting mechanism includes
Cross cylinder (14), second sensor, third hinge (16), cross cylinder push plate (17), described cross cylinder (14) one end with
The second sensor is connected, and piston (15) end of the cross cylinder (14) is equipped with the third hinge (16), described
The cross cylinder push plate (17) is installed, the cross cylinder push plate (17) is mounted on the trolley in third hinge (16)
(18) on.
6. wheel-rail friction fatigue experimental device according to claim 5, it is characterised in that: installed on the reaction beam (11)
There is the second sensor, the cross cylinder (14) is mounted in the second sensor by the 4th hinge.
7. wheel-rail friction fatigue experimental device according to claim 1, it is characterised in that: the trolley anticollision mechanism includes
Anticollision reaction frame (24) in front of the trolley (18) is equipped with hydraulic damper (23) on the anticollision reaction frame (24).
8. wheel-rail friction fatigue experimental device according to claim 3, it is characterised in that: the compression crossbeam (6) with hold
Carry the rolling guide block (31) that anti-lateral force is housed among frame (1).
9. wheel-rail friction fatigue experimental device according to claim 1, it is characterised in that: the rail (19) passes through rail
Anchor plate kit (20) is pressed on the trolley (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821112690.XU CN208476709U (en) | 2018-07-13 | 2018-07-13 | A kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821112690.XU CN208476709U (en) | 2018-07-13 | 2018-07-13 | A kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208476709U true CN208476709U (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821112690.XU Active CN208476709U (en) | 2018-07-13 | 2018-07-13 | A kind of wheel-rail friction fatigue experimental device with trolley anticollision mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166667A (en) * | 2021-11-19 | 2022-03-11 | 广东石油化工学院 | Multidirectional physical impact test equipment for testing fatigue of metal material |
-
2018
- 2018-07-13 CN CN201821112690.XU patent/CN208476709U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166667A (en) * | 2021-11-19 | 2022-03-11 | 广东石油化工学院 | Multidirectional physical impact test equipment for testing fatigue of metal material |
| CN114166667B (en) * | 2021-11-19 | 2023-09-29 | 广东石油化工学院 | Multidirectional physical impact test equipment for testing fatigue degree of metal material |
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