CN109282994B - Test device for vibration damping test of railway vehicle - Google Patents
Test device for vibration damping test of railway vehicle Download PDFInfo
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- CN109282994B CN109282994B CN201710601250.4A CN201710601250A CN109282994B CN 109282994 B CN109282994 B CN 109282994B CN 201710601250 A CN201710601250 A CN 201710601250A CN 109282994 B CN109282994 B CN 109282994B
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- jacking
- connecting rod
- jacking rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
Abstract
The invention provides a test device for vibration damping test of a railway vehicle, which comprises: the lifting rod, the guide frame, the telescopic mechanism and the locking/releasing mechanism; the guide frame is provided with a through hole for accommodating the jacking rod; the telescopic mechanism is arranged below the jacking rod, can extend to the lowest point of the jacking rod and can further extend to push the jacking rod to move in the through hole, so that a vehicle body of a tested vehicle positioned above the guide frame is lifted to a preset height by the jacking rod; the locking/releasing mechanism is used for locking the jacking rod after the jacking rod lifts the vehicle body to a preset height, and releasing the jacking rod after the telescopic mechanism retracts. The vehicle body is lifted to the preset height by abutting against the lifting parking place of the vehicle body through the lifting rod, the lifting rod is released by the locking/releasing mechanism after the vehicle body is lifted to the preset height, the wheels of the tested vehicle bogie are always in contact with the track in the whole process, and damage to the wheels due to collision between the wheels and the track is avoided.
Description
Technical Field
The invention relates to the technical field of rail vehicle testing, in particular to a testing device for rail vehicle vibration damping testing.
Background
The rail vehicle is a multi-rigid-body multi-degree-of-freedom system, and the vibration characteristics of the vehicle can influence the riding comfort and the driving safety of a train. The rail vehicle vibration damping test is a rail vehicle vibration characteristic test performed in a static environment of a laboratory, can avoid the influence of rail line conditions on the vibration characteristics of vehicles, and is used for detecting the characteristics of the vehicles. The test method comprises the following steps: the method comprises the steps of providing an excitation for a tested vehicle by using a testing device, enabling the vehicle to simulate vibration working conditions such as sinking and floating, nodding or rolling, respectively detecting a first-system vertical and transverse vibration attenuation curve and a second-system vertical and transverse vibration attenuation curve after the whole vehicle enters a free oscillation state, and calculating a damping coefficient and a damping ratio of a vehicle system according to the curves.
In the prior art, a wedge method is generally adopted for simulating the vibration working condition of a vehicle: the wedge-shaped cushion block is arranged on the track and is provided with a guide inclined plane which forms a certain angle with the track, a vertical plane which is vertical to the track and a bearing surface which is parallel to the track and is arranged between the guide inclined plane and the vertical plane; during the test, the tested vehicle is pushed, so that the wheels move to the bearing surface from the guide inclined surface and then fall onto the rail from the vertical surface, and the whole vehicle vibrates freely.
Although the method can well simulate the vibration state of the vehicle, the mass of the railway vehicle is large, and the wheel set suddenly falls off from the wedge-shaped block, so that the tread of the wheel is easily injured by smashing.
Disclosure of Invention
In view of this, the invention provides a testing device for vibration damping test of a railway vehicle, which aims to solve the technical problem that a wheel falls behind from a wedge block during testing and easily damages a wheel set tread.
The invention provides a test device for vibration damping test of a railway vehicle, which comprises: the lifting rod, the guide frame, the telescopic mechanism and the locking/releasing mechanism; the guide frame is provided with a through hole for accommodating the jacking rod; the telescopic mechanism is arranged below the jacking rod, can extend to the lowest point of the jacking rod and can further extend to push the jacking rod to move in the through hole, so that a tested vehicle body above the guide frame is lifted to a preset height by the jacking rod; the locking/releasing mechanism is used for locking the jacking rod after the jacking rod lifts the vehicle body to a preset height, and releasing the jacking rod after the telescopic mechanism retracts.
The test device for rail vehicle vibration damping test as described above, preferably, the locking/releasing mechanism includes: a connecting rod assembly and a first electromagnet; the connecting rod assembly includes: the lifting device comprises a first connecting rod and a second connecting rod which are hinged together, wherein the connecting end of the first connecting rod is hinged with the lifting rod, and the connecting end of the second connecting rod is hinged with the bottom of the guide frame; the first electromagnet is used for controlling the state of the connecting rod assembly so as to lock or release the jacking rod.
According to the test device for the vibration damping test of the railway vehicle, preferably, the two pairs of connecting rod assemblies are respectively arranged on two opposite sides of the through hole.
Preferably, the hole wall of the through hole is provided with a groove, and the fixing part of the jacking rod penetrates through the groove to be hinged to the connecting end of the first connecting rod.
The test device for vibration damping test of railway vehicle as described above, preferably, the locking/releasing mechanism further comprises: the propping block, the spring and the supporting plate are matched with the first electromagnet; the supporting plate is arranged on the outer side of the guide frame; the propping block is connected with the supporting plate through the spring and is used for propping against the connecting rod assembly; the first electromagnet is arranged on the supporting plate, and when the first electromagnet releases the connecting rod assembly, the abutting block pushes the connecting rod assembly to release the jacking rod.
According to the test device for the vibration damping test of the railway vehicle, preferably, the support plate is provided with a threaded hole, a bolt is arranged in the threaded hole, and the abutting block is connected with the bolt through a spring.
The test device for vibration damping test of railway vehicle as described above, preferably, the locking/releasing mechanism is a clamping jaw capable of controlling clamping or releasing the jacking rod.
Preferably, the jacking rod is a magnetic rod, and the locking/releasing mechanism is a second electromagnet.
According to the test device for the vibration damping test of the rail vehicle, preferably, a threaded hole is formed in the top end of the jacking rod, and a jacking bolt for jacking the vehicle body is arranged in the threaded hole.
The test device for the vibration damping test of the railway vehicle is preferably characterized in that the telescopic mechanism is a hydraulic cylinder.
According to the test device for the vibration damping test of the rail vehicle, the jacking rod is arranged in the through hole of the guide frame, the telescopic mechanism pushes the jacking rod to move in the through hole, and the jacking rod abuts against the vehicle body of the tested vehicle to lift the vehicle body to the preset height; the locking/releasing mechanism locks the jacking rod after the vehicle body is lifted to a preset height; after the telescopic mechanism is controlled to retract, the locking/releasing mechanism releases the jacking rod, so that the vehicle body naturally falls and the whole vehicle vibrates. The wheels of the vehicle to be tested are always in contact with the rails in the whole process, so that the wheels are prevented from being damaged due to collision between the wheels and the rails.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a block diagram of a testing apparatus for vibration damping test of a rail vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a connecting rod assembly in a testing apparatus for vibration damping test of a rail vehicle according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating an installation of an abutting block and a spring in the testing apparatus for testing vibration damping of a rail vehicle according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a jacking rod of the testing device for vibration damping test of the rail vehicle according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a jacking rod of the testing device for vibration damping test of the rail vehicle, which is provided by the embodiment of the invention, being locked.
Description of reference numerals:
10. a jacking rod; 20. A guide frame;
30. a telescoping mechanism; 40. A first link;
50. a second link; 60. A first electromagnet;
70. a bolt; 80. A spring;
90. a propping block; 101. A fixed part;
102. a butting bolt; 201. A support plate;
202. and (7) mounting a seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a structural diagram of a testing apparatus for a rail vehicle vibration damping test according to an embodiment of the present invention, and fig. 1 is referred to. The test device comprises: a jacking rod 10, a guide frame 20, a telescopic mechanism 30 and a locking/releasing mechanism; the guide frame 20 is formed with a through hole for receiving the lift pin 10; the telescopic mechanism 30 is arranged below the jacking rod 10, can extend to the lowest point of the jacking rod 10 and can further extend to push the jacking rod 10 to move in the through hole, so that the vehicle body of the vehicle to be tested above the guide frame 20 is lifted to a preset height by the jacking rod 10; the locking/releasing mechanism serves to lock the lift pin 10 after the lift pin 10 lifts the vehicle body to a preset height, and to release the lift pin 10 after the telescopic mechanism 30 is retracted.
Specifically, the rail vehicle is a multi-rigid-body multi-degree-of-freedom system, and the test device is used for providing an excitation for the vehicle so as to simulate the vibration state of the vehicle. Therefore, during testing, one or more testing devices for testing the vibration damping of the rail vehicle are arranged under the lifting parking space of the vehicle body of the tested vehicle according to different testing working conditions; the axis of the through hole on the guide frame 20 is vertical to the ground, and the lifting rod 10 is arranged in the through hole and can slide in the through hole along the direction of the axis of the through hole; the telescoping mechanism 30 may be any powered device capable of providing telescoping movement, such as: the telescoping mechanism 30 may include a lead screw and a motor; the screw rod of lead screw is connected with the main shaft transmission of motor, and the axis of lead screw is parallel with the axis of through-hole, and the nut of lead screw have with jacking rod 10 bottom butt boss, and when the motor drove the screw rod and rotates, the axis upward movement of screw rod can be followed with screw rod complex nut, and then support jacking rod 10 upward movement.
Specifically, the preset height at which the lifting rod 10 is lifted up against the car body may be a distance that can ensure that wheels on the bogie do not leave the track and meet the test requirements, and the preset height may be selected according to different test conditions. Preferably, the lock/release mechanism may comprise a latch; a first pin hole perpendicular to the axis of the through hole is formed in the guide frame 20, a second pin hole is formed in the jacking rod 10, and the second pin hole is reasonably arranged in a position such that the first pin hole is over against the second pin hole when the jacking rod 10 lifts the car body to a preset height, and at the moment, the bolt is inserted into the first pin hole and the second pin hole, so that the jacking rod 10 is locked; then controlling the telescoping mechanism 30 to stop abutting against the jacking rod 10 and retracting the telescoping mechanism 30; the bolts in the first pin hole and the second pin hole are pulled out, the jacking rod 10 and the vehicle body rapidly fall under the action of gravity, and then the whole vehicle enters a free vibration state.
According to the test device for the vibration damping test of the rail vehicle, the jacking rod 10 is arranged in the through hole, the telescopic mechanism 30 pushes the jacking rod 10 to move in the through hole, and the jacking rod 10 abuts against the vehicle body and lifts the vehicle body to a preset height; the locking/releasing mechanism releases the jacking rod 10 after the vehicle body is lifted to a preset distance, the vehicle body freely falls, and then the whole vehicle freely vibrates. The wheels of the vehicle to be tested are always in contact with the rails in the whole process, so that the wheels are prevented from being damaged due to collision between the wheels and the rails.
Fig. 2 is a schematic structural diagram of a link assembly in a testing apparatus for a vibration damping test of a rail vehicle according to an embodiment of the present invention, and fig. 2 is referred to. Preferably, the locking/releasing mechanism comprises: a connecting rod assembly and a first electromagnet 60; the link assembly includes: the lifting device comprises a first connecting rod 40 and a second connecting rod 50 which are hinged together, wherein the connecting end of the first connecting rod 40 is hinged with the lifting rod 10, and the connecting end of the second connecting rod 50 is hinged with the bottom of the guide frame 20; the first electromagnet 60 is used to control the state of the link assembly to lock or release the lift pin 10. The connecting rod assembly has strong bearing capacity, and the stability of locking the jacking rod 10 is ensured. Specifically, the connecting end of the first link 40 may be hinged to the top end of the lifting rod 10, and the connecting end of the second link 50 is hinged to the bottom of the guide frame 20; when the lifting rod 10 moves upwards along the through hole, the first connecting rod 40 and the second connecting rod 50 are driven to move until the first connecting rod 40 and the second connecting rod 50 form a vertical straight line. Specifically, the first connecting rod 40 may be an iron rod or other connecting rods capable of being attracted by an electromagnet, and when the lifting rod 10 abuts against the vehicle body and rises to a preset height, the first electromagnet 60 is energized, the first electromagnet 60 applies an attraction force perpendicular to the hinge shaft to the first connecting rod 40, and the first connecting rod 40 contacts with the iron core of the first electromagnet 60, so that the first connecting rod 40 and the second connecting rod 50 maintain a stable vertical state, and the locking of the lifting rod 10 is further achieved. When the telescoping mechanism 30 is retracted, the linkage assembly is subjected to all of the pressure from the jacking rod 10; after the first electromagnet 60 is powered off, the connecting rod assembly cannot keep a stable vertical state, the first connecting rod 40 and the second connecting rod 50 move relatively under the pressure action of the jacking rod 10, the jacking rod 10 is released, the jacking rod 10 falls along the through hole, and the vehicle body falls naturally under the action of gravity.
Preferably, the hinge shafts between the first link 40 and the second link 50, between the first link 40 and the lift rod 10, and between the second link 50 and the guide frame 20 are connected to the corresponding first link 40 or the second link 50 by a first sliding bearing, so as to reduce the friction force of the link assembly in movement.
Preferably, the connecting rod assemblies are arranged in two pairs and symmetrically arranged on two sides of the through hole. The jacking rod 10 is uniformly stressed, and the jacking rod 10 is prevented from inclining during action.
Furthermore, a groove is formed in the wall of the through hole, fixing portions 101 are arranged on two sides of the jacking rod 10, and the fixing portions 101 penetrate through the groove to be hinged to the connecting end of the first connecting rod 40. The connection of the lock/release mechanism to the lift pin 10 is achieved.
Fig. 3 is a schematic view illustrating an installation of an abutting block and a spring in a testing apparatus for a rail vehicle vibration damping test according to an embodiment of the present invention, and fig. 3 is shown. Specifically, the lock/release mechanism further includes: an abutting block 90, a spring 80 and a support plate 201 which are matched with the first electromagnet 60; the support plate 201 is disposed outside the guide frame 20; the propping block 90 is connected with the supporting plate 201 through a spring 80 and is used for propping against the connecting rod assembly; the first electromagnet 60 is installed on the supporting plate 201, and when the first electromagnet 60 releases the connecting rod assembly, the abutting block 90 pushes the connecting rod assembly to release the jacking rod 10 so that the release of the jacking rod 10 is smooth and rapid, and the locking and the release of the jacking rod 10 can be realized through the power-on/power-off of the first electromagnet 60, so that the controllability of the test device for the vibration damping test of the railway vehicle is improved.
Preferably, the support plate 201 is parallel to the hinge shaft between the first link 40 and the second link 50 and is vertically arranged, the support plate 201 is provided with a mounting seat 202, and a guide channel perpendicular to the support plate 201 is opened inside the mounting seat 202; the spring 80 and the abutting block 90 are arranged in the guide channel; one end of the spring 80 abuts against the abutting block 90; when the jacking rod 10 moves upwards in the through hole and drives the connecting rod assembly to enter a vertical state, the first connecting rod 40 abuts against the abutting block 90, and the abutting block 90 compresses the spring 80; when the first electromagnet 60 is powered off, the propping block 90 props against the connecting rod assembly under the action of the elastic force of the spring 80, the connecting rod assembly is pushed to rapidly leave the vertical state, and then the jacking rod 10 is released.
More preferably, a threaded hole is formed in the support plate 201, a bolt 70 is disposed in the threaded hole, and the abutting block 90 is connected to the bolt 70 through a spring 80. By adjusting the screwing distance of the bolt 70 in the threaded hole, the compression amount of the compression spring 80 of the connecting rod assembly when the first electromagnet 60 locks the connecting rod assembly can be changed, and the abutting force of the abutting block 90 on the connecting rod assembly can be further adjusted.
Preferably, the lifting rod 10 is cylindrical, and the lifting rod 10 and the guide frame 20 are connected by a second sliding bearing, so as to reduce the friction between the lifting rod 10 and the guide frame 20.
Fig. 4 is a schematic structural diagram of a lifting rod of a testing apparatus for a rail vehicle vibration damping test according to an embodiment of the present invention, and fig. 4 is referred to. Preferably, a threaded hole is opened at the top end of the lifting rod 10, and a jacking bolt 102 for jacking against the bogie is arranged in the threaded hole. The length of the jacking rod 10 can be adjusted by adjusting the screwing distance of the jacking bolt 102 into the threaded hole, so that the test device meets the requirements of different vehicles on jacking height.
Preferably, the telescoping mechanism 30 is a hydraulic cylinder. The piston rod of the hydraulic cylinder abuts against the jacking rod 10 and enables the jacking rod to move in the through hole.
Fig. 5 is a schematic view illustrating a lifting rod of the testing apparatus for testing vibration damping of a rail vehicle according to an embodiment of the present invention is locked, and fig. 5 is a schematic view illustrating the lifting rod. The working process of the test device for the vibration damping test of the railway vehicle provided by the embodiment is as follows: a piston rod of the hydraulic cylinder extends into the through hole and abuts against the jacking rod 10, the jacking rod 10 extends out of the guide frame 20 and abuts against the body of the vehicle to be tested to be lifted to a preset height, meanwhile, the connecting rod assembly is driven to gradually enter a vertical state, meanwhile, the first connecting rod 40 abuts against the jacking block 90, the jacking block 90 compresses the spring 80, then, the first electromagnet 60 is controlled to be electrified to attract the first connecting rod 40, the connecting rod assembly is ensured to be in a stable vertical state, and the jacking rod 10 is locked; the piston rod of the hydraulic cylinder is controlled to be completely retracted, and at the moment, the jacking rod 10 applies all pressure from the vehicle body of the tested vehicle to the connecting rod assembly; and controlling the first electromagnet 60 to be powered off, and enabling the abutting block 90 to abut against the connecting rod assembly, so that the connecting rod assembly is rapidly away from the vertical state, releasing the jacking rod 10, further enabling the body of the tested vehicle to freely fall, and enabling the whole vehicle to enter a free vibration state.
In other embodiments, the lock/release mechanism may be a jaw that can control the clamping or release of the lift pins 10. The jacking rod 10 is provided with a clamping groove matched with the clamping jaw, and when the clamping jaw clamps the jacking rod 10, the clamping jaw can be clamped in the clamping groove to lock the jacking rod 10. The locking of the position of the jacking rod is realized through the clamping jaw, the clamping jaw can release the jacking rod instantly, and the device is simple in structure and convenient to operate.
In other embodiments, the lifting rod 10 may be a magnetic rod and the lock/release mechanism may be a second electromagnet. Through the arrangement of the second electromagnet and the magnetic rod which are matched with each other, the position of the jacking rod 10 can be conveniently and simply locked and the jacking rod 10 can be released instantly. Preferably, the second electromagnet is arranged at the top end of the guide frame 20, a flange for the second electromagnet to attract is arranged on the jacking rod 10, when the telescopic mechanism 30 drives the jacking rod 10 to abut against the body of the tested vehicle to ascend to a preset height, the second electromagnet is electrified, the second electromagnet exerts upward attraction on the jacking rod 10, so that the flange is attached to the second electromagnet, and the locking of the jacking rod 10 is realized; when the second electromagnet is powered off, the attraction of the second electromagnet to the jacking rod 10 disappears, and the jacking rod 10 contracts towards the inside of the through hole.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A test apparatus for a rail vehicle vibration damping test, comprising: the lifting rod, the guide frame, the telescopic mechanism and the locking/releasing mechanism;
the guide frame is provided with a through hole for accommodating the jacking rod;
the telescopic mechanism is arranged below the jacking rod, can extend to the lowest point of the jacking rod and can further extend to push the jacking rod to move in the through hole, so that a tested vehicle body above the guide frame is lifted to a preset height by the jacking rod;
the locking/releasing mechanism is used for locking the jacking rod after the jacking rod lifts the vehicle body to a preset height, and releasing the jacking rod after the telescopic mechanism retracts;
the lock/release mechanism includes: a connecting rod assembly and a first electromagnet;
the connecting rod assembly includes: the lifting device comprises a first connecting rod and a second connecting rod which are hinged together, wherein the connecting end of the first connecting rod is hinged with the lifting rod, and the connecting end of the second connecting rod is hinged with the bottom of the guide frame;
the first electromagnet is used for controlling the state of the connecting rod assembly so as to lock or release the jacking rod;
the lock/release mechanism further comprises: the propping block, the spring and the supporting plate are matched with the first electromagnet;
the supporting plate is arranged on the outer side of the guide frame;
the propping block is connected with the supporting plate through the spring and is used for propping against the connecting rod assembly;
the first electromagnet is arranged on the supporting plate, and when the first electromagnet releases the connecting rod assembly, the abutting block pushes the connecting rod assembly to release the jacking rod.
2. The testing apparatus according to claim 1, wherein the connecting rod assemblies are provided in two pairs, respectively on opposite sides of the through hole.
3. The testing device according to claim 1, wherein a groove is formed in a wall of the through hole, and the fixing portion of the lifting rod is hinged to the connecting end of the first connecting rod through the groove.
4. The testing device of claim 1, wherein the support plate is provided with a threaded hole, a bolt is arranged in the threaded hole, and the abutting block is connected with the bolt through a spring.
5. Testing device according to claim 1, characterized in that the locking/releasing mechanism is a jaw which can control the clamping or releasing of the lifting bar.
6. The testing device of claim 1, wherein the lifting rod is a magnetic rod and the locking/releasing mechanism is a second electromagnet.
7. The test device according to any one of claims 1 to 6, wherein a threaded hole is formed in the top end of the lifting rod, and a jacking bolt for jacking the vehicle body is arranged in the threaded hole.
8. Test device according to any of claims 1-6, characterized in that the telescoping mechanism is a hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601250.4A CN109282994B (en) | 2017-07-21 | 2017-07-21 | Test device for vibration damping test of railway vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601250.4A CN109282994B (en) | 2017-07-21 | 2017-07-21 | Test device for vibration damping test of railway vehicle |
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| CN109282994A CN109282994A (en) | 2019-01-29 |
| CN109282994B true CN109282994B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710601250.4A Active CN109282994B (en) | 2017-07-21 | 2017-07-21 | Test device for vibration damping test of railway vehicle |
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| CN110261144A (en) * | 2019-07-03 | 2019-09-20 | 成都工业学院 | A kind of test method of suspension damping ratio |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1307277A1 (en) * | 1985-12-04 | 1987-04-30 | Харьковский Тракторный Завод Им.С.Орджоникидзе | Bench for testing vehicles |
| CN102156050A (en) * | 2011-02-18 | 2011-08-17 | 吉林大学 | Manipulator pull-down quick vehicle release device |
| CN202049056U (en) * | 2011-02-18 | 2011-11-23 | 吉林大学 | Suspension vibration damping experimental system for rail vehicle |
| CN102252815A (en) * | 2011-06-29 | 2011-11-23 | 上海磁浮交通发展有限公司 | Maglev vehicle unilateral track coupling vibration test bed device |
| CN202547922U (en) * | 2012-05-15 | 2012-11-21 | 吉林大学 | Lifting device for test bench of traction transmission system of high-speed train frame suspension type bogie |
-
2017
- 2017-07-21 CN CN201710601250.4A patent/CN109282994B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1307277A1 (en) * | 1985-12-04 | 1987-04-30 | Харьковский Тракторный Завод Им.С.Орджоникидзе | Bench for testing vehicles |
| CN102156050A (en) * | 2011-02-18 | 2011-08-17 | 吉林大学 | Manipulator pull-down quick vehicle release device |
| CN202049056U (en) * | 2011-02-18 | 2011-11-23 | 吉林大学 | Suspension vibration damping experimental system for rail vehicle |
| CN102252815A (en) * | 2011-06-29 | 2011-11-23 | 上海磁浮交通发展有限公司 | Maglev vehicle unilateral track coupling vibration test bed device |
| CN202547922U (en) * | 2012-05-15 | 2012-11-21 | 吉林大学 | Lifting device for test bench of traction transmission system of high-speed train frame suspension type bogie |
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