CN207730462U - A kind of rail engineering automobile dynamic test system - Google Patents
A kind of rail engineering automobile dynamic test system Download PDFInfo
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- CN207730462U CN207730462U CN201721280344.8U CN201721280344U CN207730462U CN 207730462 U CN207730462 U CN 207730462U CN 201721280344 U CN201721280344 U CN 201721280344U CN 207730462 U CN207730462 U CN 207730462U
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Abstract
The utility model discloses a kind of rail engineering automobile dynamic test systems, it is characterized in that, its transmission device is including a dynamometer motor, a gearbox and with subject rail engineering automobile wheel to the identical gear unit of quantity, each gear unit include a chassis, rail wheel to, rail wheel to axle box, rail wheel to axis and gear-box, the gear-box of adjacent drive unit is interconnected by universal shaft, and be connected on gearbox, gearbox connects dynamometer motor；Its shaft pitch adjusting device includes and is tested rail engineering automobile wheel to the identical wheelbase adjustment unit of quantity, and the wheelbase adjustment unit only includes one group of lead screw/screw.The utility model solves supporting roller operating and driving and each wheel to operating stationary problem by the linkage in length and breadth of multiple tooth roller box, be further simplified device, easy operation, reduce cost etc..
Description
Technical field
The utility model is related to railway locomotive rolling test equipment fields, dynamic more particularly, to a kind of rail engineering automobile
State pilot system.
Background technology
Rail engineering automobile there are many type and purposes, be mainly used for the construction of track engineering, maintenance, detection, rescue and
The traction of unpowered vehicle is shunt.The characteristics of rail engineering automobile is：Vehicle power is smaller, generally less than 600kw, and speed is less than
120km/h, point of each axis often dynamic axis and servo axis, line shaft is generally by electric transmission, hydraulic power, mechanical driving device etc.
Driving.Rail engineering automobile is required for carrying out vehicle manufacture test run, examines and examine its hauling ability, system after newly making or overhauling
The assembly operating condition of dynamic performance and each building block.
Currently used for locomotive whole-vehicle manufacture test run, there are mainly two types of methods：One is the test runs on railway operation line；It is another
Kind is to carry out simulation test run on dedicated indoor rolling rig.Above two method all surrounds a target, as locomotive
Vehicle provides testing inspection service condition, so that the tractive force of subject locomotive and brake force is can conveniently adjust, plays due work(
Rate and stabilization run under a certain speed.
The method of the first test run on railway operation line, specific method are：Carried additionally after being tested locomotive accompany test-run a machine vehicle and/
Or goods train.When test run, when front truck is operated in traction working condition, adjusts rear car and be operated in damped condition；Front truck is operated in braking
When operating mode, adjusts rear car and be operated in traction (push) operating mode.In this way by two locomotive change workings, it can draw or make each other
It is dynamic, two kinds of working condition tests are run in circuit condition is provided for locomotive.This method is presently the most common and most original test run
Method.It is clear that test run is extremely inconvenient on railway operation circuit, it is more that when experiment, is related to manpower, department and station section, association
Tune degree have it is many constant, and also have installation test equipment difficulty, the poor repeatability that goes wrong, need to be with accompanying test-run a machine vehicle, line
That road is observed and pinpoints the problems in running is inconvenient, is unfavorable for breakdown judge and many disadvantages such as processing, of high cost and efficiency are low
End.
Second of method that simulation test run is carried out on dedicated indoor rolling rig, is similar to locomotive at " treadmill "
Upper operation.Its principle be locomotive by dedicated guiding boom device uplink into making locomotive wheel pair and rolling rig foundation pit
In rail wheel center vertical centering up and down, so that train wheel is seated at rail wheel top by jack up unit, at the top of rail wheel
Profile is identical as practical railroad track top surface profile, is equivalent to locomotive and is run in endless track, subject locomotive wheel driving examination
Test the rotation of platform rail wheel, by rail wheel-step-up gear-dynamometer motor transmission system, to subject locomotive apply tractive force or
Brake force, power to wasted work resistance or are fed back on power grid eventually by dynamometer motor output electric energy.This method was in recent years
It is gradually used, is primarily adapted for use in high-power visitor, freight locomotive.Specifically, as shown in Figure 1, locomotive in the prior art rolls
Pilot system includes mainly transmission device, positioning device and shaft pitch adjusting device, wherein positioning device includes fixed tractive force
Platform meter 102, packaged type tractive force platform meter 101, standard trajectory 103 and guide beam 104, lead in use, first removing packaged type
Gravitation platform meter 101, locomotive enters guide beam 104 along standard trajectory 103, in the traction force effect of fixed tractive force platform meter 102
Under slowly along guide beam 104 advance.Transmission device is made of separate transmission unit identical with train wheel quantity, each to be driven
Unit include rail wheel pair 201, rail wheel to axle box 203, rail wheel to axis 202, gear-box 204, dynamometer motor 205 and flywheel
Machine 206, rail wheel pair 201 are located at rail wheel on axis 202, with locomotive wheel to upper and lower vertical centering, being equivalent to endless rail
Road, rail wheel position supporting track wheel to axis 202 to axle box 203, and rail wheel is to axis 202 and gear-box 204, dynamometer motor 205
It is sequentially connected with Flywheel machine 206, providing power by gear-box 204, dynamometer motor 205 and Flywheel machine 206 transmits.As shown in Figure 1,
Rail wheel is fixedly mounted on chassis 1 axle box 203, and gear-box 204, dynamometer motor 205 and Flywheel machine 206 are mounted on bottom
On frame 2 208, chassis 1 and chassis 2 208 are ridden respectively on two longitudinal screw mandrel holders 301/302 and 303/304.Often
Group shaft pitch adjusting device includes two groups of 305/306/ screws of leading screw, is separately mounted on chassis 1 and chassis 2 208, passes through
Roll-out tray 1 and chassis 2 208 realize wheelbase adjustment.The shortcomings that system is first, since each gear unit is
It is independent, operation power cannot be provided for supporting roller；Second, all dynamometer motors are controlled by electric synchronizing device, to make each vehicle
Wheel speed is consistent, and is influenced by electric synchronizing device control accuracy and sensor accuracy, and each vehicle wheel rotational speed synchronization accuracy is deteriorated；
Third, shaft pitch adjusting device component is more, increases the difficulty of wheelbase adjustment；4th, hall space needed for system is big, and equipment is whole
Body cost is high.
Since the vehicle power of rail engineering automobile is smaller, and point of dynamic wheel and supporting roller, using above-mentioned indoor special
Rolling test system is that rail engineering automobile carries out vehicle test run, cannot fully meet the demand of rail engineering automobile, each wheel
Rotating speed synchronization accuracy is poor, and wheelbase adjustment is complicated, and cost is excessively high.
Invention content
The purpose of the utility model is to overcome drawbacks described above, provide a kind of rail engineering automobile dynamic test system, to existing
There is technology to carry out structure optimization, improve the economical of pilot system, convenience and reliability comprehensively, makes the rail engineering automobile be at this
Operation can replace running on the line substantially on system, meet the requirement of test run technology, rail engineering automobile is made and overhauled to solution newly
Development, verification experimental verification, examination problem, with important promotional value.
To achieve the above object, the technical solution of the utility model is as follows：
A kind of rail engineering automobile dynamic test system, including transmission device, positioning device and shaft pitch adjusting device, it is described fixed
Position device includes fixed tractive force platform meter, packaged type tractive force platform meter, standard trajectory and guide beam, it is characterised in that：
The transmission device is including a dynamometer motor, a gearbox and with subject rail engineering automobile wheel to quantity
Identical gear unit, each gear unit include a chassis, rail wheel to, rail wheel to axle box, rail wheel to axis
And gear-box, the rail wheel is to being fixedly mounted on the rail wheel on axis, the rail wheel is mounted on the track to axis
Wheel is on axle box, the rail wheel connect axis with the gear-box, and the rail wheel is mounted on axle box and the gear-box
On the chassis, the chassis is ridden on two longitudinal screw mandrel holders, is interconnected between the adjacent gear-box, and connect
Onto the gearbox, the gearbox connects the dynamometer motor；
The shaft pitch adjusting device include with subject rail engineering automobile wheel to the identical wheelbase adjustment unit of quantity, it is described
Wheelbase adjustment unit includes one group of lead screw/screw, and the lead screw is mounted on the chassis of the transmission unit and the longitudinal screw mandrel
On holder.
Further, the rail wheel to axle box be Liftable rail wheel to axle box.
Preferably, the Liftable rail wheel includes rail wheel to axle box, the package rail wheel to axle box to axle box
Rectangular drawing strickle guide, in the rectangular drawing strickle guide and positioned at the rail wheel to below axle box support device, be located at it is described rectangular
Peace is fixed in the bottom of the rectangular flat roller bearing of side wall and the rail wheel between axle box in drawing strickle guide, the rectangular drawing strickle guide
On the chassis.
Preferably, the rail wheel in the rectangular drawing strickle guide is to also having pressure sensor below axle box.
Preferably, the support device is hydraulic jack.
Further, the guide beam is fixed guide beam.
Preferably, the fixed guide beam is the rectangular body support frame of rectangle, and the rectangle cuboid rack upper surface is indulged
To edge by being separated out the track of same size with rail engineering automobile vehicle wheel rim between a link stopper with certain altitude.
Preferably, the gear-box is connected by shaft by universal shaft and the rail wheel.
Preferably, the gear-box is conical tooth gear-box.
Preferably, the dynamometer motor is that it encourages direct current generator, three-phase synchronous generator or variable-frequency motor.
The protrusion effect of the utility model is：
1, by the linkage in length and breadth of multiple tooth roller box, supporting roller operating and driving problems is solved, track can be carried out comprehensively
The inspection examination for the dynamic property that engineering truck is advanced, avoids and motor driving is separately provided for supporting roller, keep device simple, energy saving
Efficiently, at low cost.
2, by the linkage in length and breadth of multiple tooth roller box, also solving rail engineering automobile, respectively wheel synchronizes problem in the same direction to rotating speed, more
Real simulation actual track operating status avoids the drawbacks of electric synchronization controls complexity, low precision.
3, the chassis for devising integral type keeps wheelbase adjustment more simple, efficient.
4, newly-designed Liftable rail wheel shaft box, the method for using raising track wheel shaft box make locomotive appear on the stage mode
More a kind of selections, while increasing axle load test function, save the higher axis remeasurement special equipment of cost, save at
This.
5, there is each gear-box interchangeability, the transit bridge using equipment gear case as speciality wheelbase to realize gear-box
It is longitudinally connected, be easy or can reach service condition of the special shaft away from vehicle through a little change.
6, more set gearboxes are cut and dynamometer motor, structure optimize significantly, with the other structures equipment for reaching effect same
It compares, former cost 40% can be saved.
7, system global structure is rationally distributed, compact-sized, and wheel mechanical synchronization is reliable for operation, precision is high, same without electricity
The complex controls devices such as step use convenient for on-site maintenance.
Description of the drawings
Fig. 1 is the structural schematic diagram of locomotive rolling test system in the prior art；
Fig. 2 is the structural schematic diagram of the rail engineering automobile dynamic test system of the utility model；
Fig. 3 is the signal that complete vehicle test is carried out on rail engineering automobile rail engineering automobile dynamic test system shown in Fig. 2
Figure；
Fig. 4 is that the structure of the chassis and gear unit in hole in one specific embodiment of the utility model on basic platform is shown
It is intended to；
Fig. 5 is structural schematic diagram of the Liftable rail wheel in one specific embodiment of the utility model to axle box；
Fig. 6 is the process schematic of guide beam on rail engineering automobile in one specific embodiment of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in further detail.
It should be noted that in following specific implementation modes, when the embodiment of the utility model is described in detail, in order to
The structure of the utility model is clearly showed that in order to illustrate, spy does not draw to the structure in attached drawing according to general proportion, goes forward side by side
Gone partial enlargement, deformation and simplify processing, therefore, should avoid in this, as the restriction to the utility model to understand.
In following specific embodiment of the present utility model, by taking four axis locomotives, two line shaft and two servo axis as an example, ask
Refering to Fig. 2~Fig. 4.As shown in Fig. 2, the rail engineering automobile dynamic test system of the utility model includes transmission device, positioning dress
It sets and shaft pitch adjusting device.
Positioning device includes fixed tractive force platform meter 12, packaged type tractive force platform meter 11, standard trajectory 13 and guiding
Beam 14.Before rail engineering automobile drives into pilot system, packaged type tractive force platform meter 11 is first removed, rail engineering automobile is along standard trajectory
13 initially enter guide beam 14, and under the traction force effect of fixed tractive force platform meter 12, slowly drive into, sail along guide beam 14
After entering, packaged type tractive force platform meter 11 sets back, and two tractive force platform meters carry out horizontal longitudinal register to rail engineering automobile.
Transmission device is including 21, gearboxes 22 of a dynamometer motor and with subject rail engineering automobile wheel to quantity
The gear unit of identical (being four groups in the present embodiment), each gear unit includes a chassis 27, rail wheel pair 23, rail wheel
To axle box 24, rail wheel to axis 25 and gear-box 26.Rail wheel pair 23 is fixedly mounted on rail wheel on axis 25, by rail wheel
Movement is driven to the rotation of axis 25.Rail wheel is mounted on rail wheel on axle box 24, rail wheel is to axle box 24 to track to axis 25
Wheel plays support and horizontal location to axis 25.Rail wheel connect axis 25 with gear-box 26, for turning to gearing.Often
Group gear unit is mounted on the chassis 27 of an entirety, which rides on two longitudinal screw mandrel holders 28.Adjacent teeth
It realizes and interconnects between roller box 26, continue the transmission of power, be finally all connected on gearbox 22, gearbox 22 connects measurement of power electricity
Machine 21.Gearbox 22 is matched for coordinating between extension locomotive speed and 21 speed of dynamometer motor, realizes larger velocity interval
Speed change.Dynamometer motor 21 is used to measure the hauling capacity of a locomotive and mechanical output in generator operating mode, is measured in motor working condition
Locomotive brake force and braking power.Using DC power measurement motor, there are two types of regulative modes：When exciting current adjustment, second is that armature
DC current is adjusted.The adjusting of excitation and armature supply can be realized by adjusting DC loop resistance.It also can be according to need
To use three-phase synchronous generator or asynchronous motor supplied with variable frequency measurement of power form, realize electric energy recycling or dry resistance consumption, carry out dilatation and
Transformation.
Shaft pitch adjusting device includes four groups of wheelbase adjustment units, and every group of wheelbase adjustment unit includes one group of lead screw/screw 31/
32, lead screw 31 is mounted on chassis 27 and longitudinal screw mandrel holder 28, rotates screw 32, lead screw 31 is along the longitudinal shifting of screw rod bracket 28
It is dynamic, realize wheelbase adjustment.
From the foregoing, it will be observed that the dynamic test system of the utility model is compared to the prior art, main contributions are：Transmission is filled
It sets and has done larger improvement, independent gear unit is improved to linkage transmission, only by the output of gearbox or input power,
So that the rotating speed of each rail wheel pair is consistent by the linkage of each gear-box, there is higher control accuracy, simple in structure, operation side
Just, and the use number of dynamometer motor and gearbox is greatly reduced, reduces cost, meanwhile, also overcome the prior art not
Can be the drawbacks of supporting roller applies power.On the other hand, structure optimization has also been carried out to Undercarriage structure, by the prior art two
Group chassis merges into an integrated bottom frame, and structure is compacter, further simplifies shaft pitch adjusting device, wheelbase adjustment difficulty drop
It is low.
The utility model also improves axle box 24 and guide beam 14 rail wheel, keeps dynamic test system further
It is optimised.
Specifically, rail wheel can be improved to Liftable rail wheel to axle box to axle box.Referring to Fig. 5, Liftable rail wheel
To axle box 24 in rail wheel to one rectangular drawing strickle guide 242 of axle box outer wrapping, rail wheel is placed in drawing strickle guide 242 axle box, rail wheel pair
Rectangular flat roller bearing 241, horizontal position of the constraint tracks wheel to axle box are clamped between 242 madial wall of axle box and drawing strickle guide.Often
Angle, which is erect, is disposed vertically two, and four angles are 8 total.The bottom of drawing strickle guide 242 is connected with chassis 27.Rail wheel to axle box with
Hydraulic jack 243 is housed between 242 bottom of drawing strickle guide, is used for raising axle box.Two pieces of pads can be added in side and bottom angle
Block 244 can prevent pressure release landing when locomotive operation from causing danger.Two pressure can be reserved in 243 both sides of hydraulic jack
Axle box is seated at measurement axis weight on pressure sensor 245, can calculate Locomotive Axle Load by sensor 245.The to sum up drawing strickle guide formula axis
For case there are two function, one can make rail wheel to lifting；Two can measure Locomotive Axle Load, increase a new function.
Guide beam can be improved to fixed guide beam.As shown in fig. 6, fixed guide beam 14 includes rectangle cuboid branch
Frame (square beam being welded) 141, and rectangular 141 upper surface of body support frame of rectangle longitudinal edge pass through one with certain altitude shelves
The track 143 of same size with rail engineering automobile vehicle wheel rim 0112 is separated out between block 142.
As shown in fig. 6, making rail engineering automobile appear on the stage on axle box and fixed guide beam using above-mentioned Liftable rail wheel
Method is：First, the tread 0111 of the wheel 011 of rail engineering automobile is normally contacted with 13 top surface of standard trajectory；Secondly, standard is allowed
The inward flange of track 13 is mutually connected with the outer edge of fixed guide beam 14, constitutes standard trajectory 13 and 14 switching phase of guide beam,
After rail engineering automobile drives into guide beam 14, what the wheel rim 0112 of locomotive was separated out between the link stopper 142 of fixed guide beam upper surface
The track 143 at edge is advanced；Then, about the 0111 vertical alignment rail wheel pair 23 of wheel wheel tread of rail engineering automobile is allowed
Tread, rail wheel pair 23 are equivalent to standard trajectory, i.e. shown in figure b in Fig. 6；Finally, after upper and lower vertical alignment, in Fig. 6
Scheme to rise rail wheel shown in c to axle box 23, the total weight of such rail engineering automobile is seated at rail wheel top surface.This method positions
Accurately, easy to operate, accelerate locating speed, saves the working time.
After using Liftable rail wheel to axle box, rail wheel 26 can be connected between axis 25 and gear-box by universal shaft 29
It connects.Specifically, selection passes through lateral input flange there are one the conical tooth gear-box of laterally input and two longitudinal output flanges
Universal shaft is connected, universal axis connection rail wheel passes through flexible axis by longitudinal output flange and adjacent conical tooth gear-box
Formula universal shaft is sequentially connected, and end is connected to gearbox 22, through gearbox 22 become backward with dynamometer motor 21 (AC or DC)
Connection.What gearbox 22 was used to coordinate to coordinate between subject track engineering vehicle speed and dynamometer motor rotating speed.
Rail engineering automobile is seated at rail wheel to rear, carries out the test of power performance to it, detailed process is：
a：Traction working condition is tested：Start locomotive handle load operating, tractive force transmits transmission process and is when traction working condition：
Train wheel-rail wheel is to 23- rail wheels to axis 25- universal shaft 29- conical tooth roller box 26- universal shaft 29- change gear boxs 22-
Dynamometer motor 21.
b：Damped condition is tested：Brake force transmits transmission process and transmits transmission process on the contrary, being with tractive force：Dynamometer motor
21- change gear box 22- universal shaft 29- conical tooth roller box 26- universal shaft 29- rail wheels are to axis 25- rail wheels to 23- locomotive wheels
It is right.
c：Machinery inertial braking test：When rail engineering automobile operates in certain speed, 21 field switch of dynamometer motor is disconnected,
Deterministic simulation locomotive brake operating mode.The rotation of supporting roller can provide some mechanical inertia in this programme one side transmission system, separately
On the one hand, flywheel can be installed additional in change gear box output end when needing.
When the tractive force that rail engineering automobile provides is equal with the resistance that testing equipment provides, system reaches balance, track work
Journey vehicle travels at the uniform speed in a certain speed point stabilization.The power that rail engineering automobile plays can pass through pull tension gauge platform show value and track
Wheel speed value is calculated.
In conclusion the utility model provides the experiment of analog line trial operation, test platform for rail engineering automobile, fit
Research and development, design, the maintenance etc. of rail engineering automobile are closed, overall system architecture is simple, compact, and simple operation, performance test is reliable, greatly
Assembly overall cost has been saved greatly, there is actual application value outstanding.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its inventive concept is subject to equivalent substitution or change, should all cover the scope of protection of the utility model it
It is interior.
Claims (10)
1. a kind of rail engineering automobile dynamic test system, including transmission device, positioning device and shaft pitch adjusting device, the positioning
Device includes fixed tractive force platform meter, packaged type tractive force platform meter, standard trajectory and guide beam, it is characterised in that：
The transmission device is identical to quantity including a dynamometer motor, a gearbox and with rail engineering automobile wheel is tested
Gear unit, each gear unit include a chassis, rail wheel to, rail wheel to axle box, rail wheel to axis and tooth
Roller box, the rail wheel is to being fixedly mounted on the rail wheel on axis, the rail wheel is mounted on the rail wheel pair to axis
On axle box, the rail wheel connect axis with the gear-box, and the rail wheel is mounted on axle box and the gear-box described
On chassis, the chassis is ridden on two longitudinal screw mandrel holders, is interconnected between the adjacent gear-box, and be connected to institute
It states on gearbox, the gearbox connects the dynamometer motor；
The shaft pitch adjusting device includes with subject rail engineering automobile wheel to the identical wheelbase adjustment unit of quantity, the wheelbase
Adjustment unit includes one group of lead screw/screw, and the lead screw is mounted on the chassis of the gear unit and the longitudinal screw mandrel holder
On.
2. a kind of rail engineering automobile dynamic test system according to claim 1, which is characterized in that the rail wheel is to axis
Case is Liftable rail wheel to axle box.
3. a kind of rail engineering automobile dynamic test system according to claim 2, which is characterized in that the Liftable rail
To take turns to axle box include rail wheel to axle box, the package rail wheel to the rectangular drawing strickle guide of axle box, be located in the rectangular drawing strickle guide and
Positioned at the rail wheel to the support device below axle box, the side wall in the rectangular drawing strickle guide and the rail wheel to axle box
Between rectangular flat roller bearing, the bottom of the rectangular drawing strickle guide is fixedly mounted on the chassis.
4. a kind of rail engineering automobile dynamic test system according to claim 3, which is characterized in that in the rectangular drawing strickle guide
Rail wheel to also having pressure sensor below axle box.
5. a kind of rail engineering automobile dynamic test system according to claim 3, which is characterized in that the support device is
Hydraulic jack.
6. a kind of rail engineering automobile dynamic test system according to claim 2 or 3, which is characterized in that the guide beam
For fixed guide beam.
7. a kind of rail engineering automobile dynamic test system according to claim 6, which is characterized in that the fixed guiding
Beam is the rectangular body support frame of rectangle, and the longitudinal edge of the rectangle cuboid rack upper surface passes through a link stopper with certain altitude
Between be separated out the track of same size with rail engineering automobile vehicle wheel rim.
8. a kind of rail engineering automobile dynamic test system according to claim 2 or 3, which is characterized in that the gear-box
It is connected by shaft by universal shaft and the rail wheel.
9. a kind of rail engineering automobile dynamic test system according to claim 1, which is characterized in that the gear-box is cone
Shape gear case.
10. a kind of rail engineering automobile dynamic test system according to claim 1, which is characterized in that the dynamometer motor
Direct current generator, three-phase synchronous generator or variable-frequency motor are encouraged for it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721280344.8U CN207730462U (en) | 2017-09-30 | 2017-09-30 | A kind of rail engineering automobile dynamic test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721280344.8U CN207730462U (en) | 2017-09-30 | 2017-09-30 | A kind of rail engineering automobile dynamic test system |
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| Publication Number | Publication Date |
|---|---|
| CN207730462U true CN207730462U (en) | 2018-08-14 |
Family
ID=63090940
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| CN201721280344.8U Active CN207730462U (en) | 2017-09-30 | 2017-09-30 | A kind of rail engineering automobile dynamic test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515128A (en) * | 2017-09-30 | 2017-12-26 | 中车大连机车研究所有限公司 | A kind of rail engineering automobile dynamic test system |
| CN110626381A (en) * | 2019-09-19 | 2019-12-31 | 中铁第四勘察设计院集团有限公司 | Dynamic detection platform for running part of power-concentrated motor train unit |
-
2017
- 2017-09-30 CN CN201721280344.8U patent/CN207730462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515128A (en) * | 2017-09-30 | 2017-12-26 | 中车大连机车研究所有限公司 | A kind of rail engineering automobile dynamic test system |
| CN110626381A (en) * | 2019-09-19 | 2019-12-31 | 中铁第四勘察设计院集团有限公司 | Dynamic detection platform for running part of power-concentrated motor train unit |
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