CN101813565B - Framework positioning device for comprehensive parameter detection table of rail vehicle bogie - Google Patents
Framework positioning device for comprehensive parameter detection table of rail vehicle bogie Download PDFInfo
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- CN101813565B CN101813565B CN2010191000046A CN201019100004A CN101813565B CN 101813565 B CN101813565 B CN 101813565B CN 2010191000046 A CN2010191000046 A CN 2010191000046A CN 201019100004 A CN201019100004 A CN 201019100004A CN 101813565 B CN101813565 B CN 101813565B
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Abstract
The invention relates to comprehensive parameter test equipment for a rail vehicle bogie, in particular to a framework positioning device for a comprehensive parameter detection table of a rail vehicle bogie. The device comprises a longitudinal framework positioning support (a), a transverse left framework positioning support (b) and a transverse right framework positioning support (c), and the three framework positioning supports are all fixed on a T-shaped groove ground rail (3) constructed in a concrete foundation through T-shaped bolts (2), wherein the longitudinal framework positioning support (a) is positioned on the front side of a test bed, and the transverse left framework positioning support (b) and the transverse right framework positioning support (c) are positioned on left and right sides of the test bed respectively. The device can quickly and accurately position the rail vehicle bogie frameworks of various specifications to meet the requirement for main kinetic parameter detection of the rail vehicle bogie in multiple running states.
Description
Technical field
The present invention relates to rail vehicle truck testing synthesis parameter equipment, particularly the location of bogie frame and fixing.
Background technology
Typical bogies for railway vehicles mainly is made up of framework, two stage suspension, wheel equity, and bearing body on it is the running mechanism of rail vehicle.The major parameter of rail vehicle truck comprise one be, two vertical stiffnesses that are, longitudinal rigidity, lateral stiffness, gyro rigidity, diamond resistant rigidity and revolution moment of friction etc., the size of each parameter and the whether reasonable quality that determines the bogie dynamic property of coupling, in service at circuit, these parameters directly influence speed, stationarity, comfortableness and the safe reliability of train.Therefore, each major parameter of bogies for railway vehicles is measured accurately and studied is very essential to exploitation bogie comprehensive parameter detection table.
Mensuration for parameter of bogie of railway car, tested bogie need be fixed on the special-purpose monitor station, at different test events, by the different actuator of Hydrauservo System control tested bogie or detection platform corresponding site are carried out simulation loading, make and produce corresponding displacement or distortion between each parts of tested bogie, measure the load that applied and the size of displacement by force transducer and displacement transducer respectively simultaneously, can calculate the bogie corresponding stiffness thus.
During location parameter, the install and fix general employing wheel of rail vehicle truck on testing table fixed fixing or framework.Utilize wheel to fixed form, to the framework application of force, make between framework and the bogie and produce relative displacement during test, but this fixed form can't to distinguish one be and the stiffness parameters of secondary suspension to carry out the measurement of bogie integral rigidity parameter.Utilize the framework fixed form, if during test to wheel to or the wheel shaft application of force, realize that wheel is to the stiffness parameters that can measure single stage suspension that moves with respect to framework; If to the car body or the simulated frame application of force, realize the move stiffness parameters that can measure secondary suspension of car body with respect to framework.In the rail vehicle truck comprehensive parameter measuring, adopt second method usually, this just requires testing table can carry out fast bogie frame, fix accurately, easily and reliably.If framework is not positioned in certain direction, then can not measure the stiffness parameters on this direction; If framework is located inaccurate on certain direction, then can cause measuring accuracy to descend, produce measuring error.Owing to present bogie model, of a great variety, particularly high-speed track vehicle bogie structure complexity, framework is various informative, and the chucking device of locating for framework requires to have certain versatility, and it is convenient to guarantee that the different model bogie frame is fixed.
At home, the research of bogie measuring technology is mainly undertaken by institution of higher learning and rail vehicle manufacturing plant.Southwest Jiaotong University is as domestic unique institution of higher learning with the national key lab of rail vehicle, have the certain experience basis aspect the bogie detection technique, it has two steering frame parameter detection equipments and has multinomial patent of invention in the rail vehicle field tests.And Qiqihar orbit Transport equipment, limited liability Co.ltd develops the bogie characterisitic parameter test board that has independent intellectual property right, and has obtained utility model patent.Jilin University was also obtaining certain progress in nearly 2 years aspect the rail vehicle truck test, disclose and applied for multinomial patent at present.But the above-mentioned parameter testing table aspect the framework location more or less all have certain problem:
1, the patent patent No. of Southwest Jiaotong University: ZL200610022671.3; Denomination of invention: rail vehicle truck parameter measuring table; Granted publication number: CN100445721C; Granted publication day: on Dec 24th, 2008; The applying date: on Dec 27th, 2006.This patent provides a kind of rail vehicle bogie rigidity parameter measuring table, the mensuration platform that comprises base and base top, it is mainly set forth the structure of the floating support seat between base and the mensuration platform, the bogie frame supporting and positioning device is not described.
2, the patent patent No. of Southwest Jiaotong University: ZL 200810044274.5; Denomination of invention: a kind of determination test platform that can measure railway stock bogie three-way rigidity simultaneously; Granted publication number: CN100526843C; Granted publication day: on August 12nd, 2009; The applying date: on April 23rd, 2008.This patent disclosure a kind of determination test platform that can measure railway stock bogie three-way rigidity simultaneously, its structure by planer-type realizes vertical, the horizontal and vertical loading to bogie, measure each to acting force by the load transducer between back up pad and the mobile platform, also the structure of bogie frame locating device is not set forth.
3, the patent of Qiqihar orbit Transport equipment, limited liability Co.ltd: ZL 200820133107.3; Denomination of invention: bogie characterisitic parameter test board; Granted publication number: CN201247155Y; Granted publication day: on May 27th, 2009; The applying date: on August 29th, 2008.This utility model discloses a kind of bogie characterisitic parameter test board, and it can carry out located lateral to framework and car body, and can be to wheel to carrying out horizontal and vertical location, but can not carry out longitudinal register to framework, thereby influence respectively is the measurement of hanging longitudinal rigidity.By to integrally-built analysis, this patent only is applicable to traditional three-major-items formula roller bearing adapter stabilizer bar, especially taking turns does not have versatility to longitudinal positioning device to the Modern High-Speed bogie of car, because existing hot-short bogie axle complex structure, wheel influences being installed of this device to being provided with associate members such as brake disc on the axletree more.
4, the patent of Jilin University: application number 200810050261.9; Denomination of invention: four-column type rail vehicle bogie rigidity test macro; Publication number: CN101216376A; Open day: on July 9th, 2008; The applying date: on January 16th, 2008.The version of the test macro in this patent is four-column type, by the five degree of freedom force application system in this system bogie is carried out the rational application of force, but this patent is not seen the structure to the framework location.
Summary of the invention
The objective of the invention is to overcome the above-mentioned shortcoming that prior art exists, a kind of framework positioning device that can be used for comprehensive parameter detection table of rail vehicle bogie is provided, this device can position various model rail vehicle truck frameworks, to satisfy the needs that the major impetus mathematic(al) parameter of rail vehicle truck under multiple running status detects.
Above-mentioned purpose of the present invention is achieved through the following technical solutions, and accompanying drawings is as follows.
A kind of framework positioning device that is used for comprehensive parameter detection table of rail vehicle bogie, this device comprises longitudinal frame positioning support a, horizontal left framework positioning support b and horizontal right framework positioning support c, described three framework positioning supports are all by being bolted on the T type trough rail of building in concrete foundation 3, wherein longitudinal frame positioning support a is positioned at the testing table front side, horizontal left framework positioning support b and horizontal right framework positioning support c lay respectively at the testing table left and right sides, each framework positioning support is respectively by a frame supports holder 1, article two, T type trough rail 3, framework thrust crossbeam 4 and two cover thrust screw mechanisms 5 are formed, frame supports holder 1 is installed on the T type trough rail 3 that is cast in the concrete foundation by several bolts 2, framework thrust crossbeam 4 rear side end faces are connected in by bolt on the front end face of frame supports holder 1, and two cover thrust screw mechanisms 5 are installed on framework thrust crossbeam 4 anterior end surface and adjustable positions.
Described framework thrust crossbeam 4 anterior end surface are provided with T type groove guide rail and tooth bar 6, and thrust screw mechanism 5 is slidingly matched by thrust nut seat slide plate on it 15 and T type groove guide rail, and by T type bolt 16 and T type groove guide rail positioning and fixing.
Described thrust screw mechanism 5 is mainly formed by thrust leading screw Universal-head 7, radial force cell 9, thrust leading screw 10 with framework thrust crossbeam 4 coupling assemblings, described radial force cell 9 is connected in the front end of thrust leading screw 10 by screw thread, described thrust leading screw Universal-head 7 connects the front end that dish 8 is contained in radial force cell 9 by the sensor bulb, it is ball head structure that the sensor bulb connects dish 8 heads, cooperates assembling with the ball recess activity of thrust leading screw Universal-head 7.
Thrust is housed on the described thrust leading screw 10 rotates screw 21, thrust is rotated screw 21 and is contained in the thrust nut seat adapter 12 by thrust screw support set 22, and screw 21 is rotated in thrust be pressed in thrust screw support set 22 front ends by being connected in thrust screw door 20 on the thrust screw support set 22, thrust screw support set 22 is connected in the thrust nut seat and takes over 12 front end flange place, and thrust is rotated on the screw 21 front end outer walls and is fixed with thrust feed screw nut handwheel 11.
Described and framework thrust crossbeam 4 coupling assemblings comprise: the thrust nut seat slide plate 15 that is slidingly matched with framework thrust crossbeam 4 guide rails, be connected in the eccentric nut seat pressure ring 14 of thrust and eccentric nut seat 13 of thrust and gear shaft block 18 on the thrust nut seat slide plate 15 by bolt, the eccentric nut seat 13 1 side outer rims of described thrust cooperate with the inboard of the eccentric nut seat gear ring 23 of thrust and are fixed together by bolt, be pressed on the thrust nut seat slide plate 15 by the eccentric nut seat pressure ring 14 of thrust, the eccentric nut seat 13 of thrust is taken over 12 by bolt and thrust nut seat and is connected, described gear shaft block 18 is connected on the thrust nut seat slide plate 15, gear shaft 24 and gear shaft block 18 are connected by revolute pair, its front end thrust nut seat that is being connected shakes handle 17, rear end and thrust nut seat gear 19 are connected, gear shaft 24 can move axially in gear shaft block 18, drive thrust nut seat gear 19 respectively with tooth bar 6 engagements of eccentric nut seat gear ring 23 of thrust or framework thrust crossbeam 4 anterior end surface.
The technique effect of invention: the present invention compared with prior art, this device has adopted compact, reasonable structural design, can be quickly and easily the tested bogie of different model be positioned, and can fix bogie frame, can satisfy the dynamic and static detection requirement of the different parameters such as vertical stiffness, longitudinal rigidity, lateral stiffness, gyro rigidity and revolution moment of friction of bogie primary and secondary suspension device.Guarantee in the test process one be and the secondary suspension parameters is measured accurately, reliable.This parameter of bogie test board versatility is stronger, can be easily and quickly according to the structural adjustment anchor point of different model bogie frame, and can apply certain constraining force to bogie frame, simple to operate, the location rapidly, and is easy to maintenance, dependable performance.For testing table carry out one be, testing synthesis parameter such as secondary suspension provides sound assurance.
Description of drawings
Fig. 1 bogie comprehensive parameter detection table main body figure;
Fig. 2 bogie frame locating device position view;
Fig. 3 framework positioning support synoptic diagram;
Fig. 4 framework thrust crossbeam synoptic diagram;
Fig. 5 thrust screw mechanism synoptic diagram;
Fig. 6 (a) thrust screw mechanism cut-open view;
Fig. 6 (b) is that Fig. 6 (a) A-A is to view.
Among the figure: the tested rail vehicle truck of I-; A-bogie frame locating device; B-three-degree-of-freedom motion platform and bogie primary parameter measuring apparatus; C-test simulation vehicle frame and bogie two are parameter measuring apparatus;
A-longitudinal frame positioning support; The horizontal left framework positioning support of b-; The horizontal right framework positioning support of c-;
1-frame supports holder; 2-T type bolt; 3-T type trough rail; 4-framework thrust crossbeam; 5-thrust screw mechanism; The 6-tooth bar; 7-thrust leading screw Universal-head; 8-sensor bulb connects dish; 9-radial force cell; 10-thrust leading screw; 11-thrust feed screw nut handwheel; 12-thrust nut seat is taken over; The eccentric nut seat of 13-thrust; The eccentric screw pressure ring of 14-thrust; 15-thrust nut seat slide plate; 16-T type bolt; 17-thrust nut seat shakes handle; The 18-gear shaft block; 19-thrust nut seat gear; 20-thrust screw door; Screw is rotated in the 21-thrust; 22-thrust screw support set; The eccentric nut seat gear ring of 23-thrust; The 24-gear shaft.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment, further specify particular content of the present invention.
Consult Fig. 1, the bogie comprehensive parameter detection table is that parameter measuring apparatus C forms by bogie frame locating device A, three-degree-of-freedom motion platform and bogie primary parameter measuring apparatus B and test simulation vehicle frame and bogie two.Consult Fig. 2, wherein bogie frame locating device A comprises longitudinal frame positioning support a, horizontal left framework positioning support b, horizontal right framework positioning support c.Each framework positioning support a, b, c all are fixed on the T type trough rail of building in concrete foundation 3 by M36T type bolt 2.Longitudinal frame positioning support a is positioned at the testing table front side, can play longitudinal register to bogie frame, and the effect of support is played in action to the vertical actuator of simulated frame; Horizontal left framework positioning support b and horizontal right framework positioning support c lay respectively at the testing table left and right sides, can play located lateral to bogie frame, and the effect of support is played in action to the horizontal actuator of simulated frame.
Consult Fig. 3, wherein framework positioning support a, b, c are made up of a frame supports holder 1, some M36T type bolts 2, two T type trough rails 3, framework thrust crossbeam 4 and two cover thrust screw mechanisms 5.Frame supports holder 1 is installed on the T type trough rail 3 that is cast in the concrete foundation by some M36T type bolts 2, and many row's threaded holes are arranged on its front end face, is convenient to fixing vertical or horizontal actuator and framework thrust crossbeam 4.Framework thrust crossbeam 4 rear sides are connected in by bolt on the front end face of frame supports holder 1, can regulate the height of framework thrust crossbeam 4 according to the position of different threaded holes, to adapt to the bogie frame of different model.
Consult Fig. 4,5, wherein framework thrust crossbeam 4 front sides are provided with T type groove guide rail, and T type groove guide rail cooperates the effect that thrust screw mechanism 5 is played the location and fixes with the M24T type bolt 16 of thrust screw mechanism 5; T type guide rail bar cooperates with sliding pair with thrust nut seat slide plate 15 can guarantee that thrust screw mechanism 5 slides in framework thrust crossbeam 4 upper edge guide rail directions, by regulating the distance between the two cover thrust screw mechanisms 5, to adapt to the bogie frame of different length or width.A tooth bar 6 is being fixed by hexagon socket head cap screw in front end face middle part at framework thrust crossbeam 4, thrust nut seat gear 19 engagements in tooth bar 6 and the thrust screw mechanism 5, and shake handle 17 by the thrust nut seat and can realize the fast moving of thrust screw mechanism 5 on framework thrust crossbeam 4.
Consult Fig. 5,6, wherein thrust screw mechanism 5 comprises that thrust leading screw Universal-head 7, sensor bulb connect that dish 8, radial force cell 9, thrust leading screw 10, thrust feed screw nut handwheel 11, thrust nut seat take over 12, the eccentric nut seat 13 of thrust, the eccentric screw pressure ring 14 of thrust, thrust nut seat slide plate 15, M24T type bolt 16, thrust nut seat shake handle 17, gear shaft block 18, thrust nut seat gear 19, thrust nut seat door 20, thrust rotate screw 21, thrust screw support set 22, the eccentric nut seat gear ring 23 of thrust and gear shaft 24.The guide rail bar of thrust nut seat slide plate " recessed " type and framework thrust crossbeam 4 in adopt at two ends about in the of 15 cooperates with the form of sliding pair; Cooperate with the T type groove of framework thrust crossbeam 4 by M24T type bolt 16 thrust screw mechanism 5 is connected on the framework thrust crossbeam 4.The eccentric nut seat pressure ring 14 of thrust is connected on the thrust nut seat slide plate 15 by hexagon socket head cap screw.The outside of the eccentric nut seat of thrust 13 rear ends cooperates with the inboard of the eccentric nut seat gear ring 23 of thrust and is fixed together by hexagon socket head cap screw, is pressed on the thrust nut seat slide plate 15 by the eccentric nut seat pressure ring 14 of thrust.The adapter 12 of thrust nut seat is connected on the eccentric nut seat 13 of thrust by hexagon socket head cap screw.Because eccentric effect, when the engagement of tooth is rotated the eccentric nut seat 13 of thrust in the eccentric nut seat pressure ring 14 of thrust on by the eccentric nut seat gear ring 23 of thrust nut seat gear 19 and thrust, realization thrust screw mechanism 5 fine setting within a certain height.Thrust screw support set 22 is connected in the thrust nut seat by hexagon socket head cap screw and takes over 12 front end flange place, and thrust leading screw 10 is played the effect of supporting and leading, and guarantees that thrust leading screw 10 does not rotate when precession and back-out.Thrust screw door 20 is connected on the thrust screw support set 22 and screw 21 is rotated in thrust by bolt and is pressed in thrust screw support set 22 front ends, thrust feed screw nut handwheel 11 is connected in thrust by bolt and rotates on the screw 21 front end outer walls, rotation thrust feed screw nut handwheel 11 can drive thrust rotation screw 21 and rotate between thrust screw door 20 and thrust screw support set 22, thereby makes 10 precessions of thrust leading screw or the back-out of rotating screw 21 screw-internal thread fit with thrust.Thrust leading screw 10 front ends are screw-like, and radial force cell 9 is connected in the front end of thrust leading screw 10 by screw thread.The sensor bulb connects dish 8 is connected in radial force cell 9 by hexagon socket head cap screw front end face; its head is a ball head structure; cooperate the flexible motion that realizes thrust leading screw Universal-head 7 with the ball recess of thrust leading screw Universal-head 7; there is the situation of various angles in plane of orientation when locating bogie frame to adapt to; and there is certain activity surplus, protection test platform and tested bogie between thrust screw mechanism 5 and the bogie frame in the assurance test process.Gear shaft block 18 is connected on the thrust nut seat slide plate 15 by hexagon socket head cap screw, and gear shaft 24 and gear shaft block 18 are connected by revolute pair, and its front end thrust nut seat that is being connected shakes handle 17, and rear end and thrust nut seat gear 19 are connected.Gear shaft 24 can move axially in gear shaft block 18, when needs thrust screw mechanism 5 when framework thrust crossbeam 4 guide rail bar directions move, thrust nut seat gear 19 and tooth bar 6 engagements shake handle 17 by rotation thrust nut seat and make thrust screw mechanism 5 move quickly into the position location; When needs thrust screw mechanism 5 anchor points are finely tuned on short transverse, eccentric nut seat gear ring 23 engagements of thrust nut seat gear 19 and thrust are shaken handle 17 by rotation thrust nut seat the eccentric nut seat 13 drive thrust leading screws of thrust are finely tuned on short transverse.Can determine anchor point on bogie frame rapidly and accurately by the adjusting of thrust screw mechanism 5, and thrust leading screw 10 is screwed out bogie frame is carried out pretension by rotating thrust feed screw nut handwheel 11, reliable the reaching that bogie frame is located in test process stablized, the independence that assurance one is and each stiffness parameters of secondary suspension is measured.Can monitor the size of power between bogie frame and the positioning support by radial force cell 9, thereby guarantee to measure the accuracy of data when respectively being rigidity.
Claims (5)
1. framework positioning device that is used for comprehensive parameter detection table of rail vehicle bogie, this device comprises longitudinal frame positioning support (a), horizontal left framework positioning support (b) and horizontal right framework positioning support (c), it is characterized in that: longitudinal frame positioning support (a) is positioned at the testing table front side in described three framework positioning supports, horizontal left framework positioning support (b) and horizontal right framework positioning support (c) lay respectively at the testing table left and right sides, each framework positioning support is respectively by a frame supports holder (1), article two, T type trough rail (3), a framework thrust crossbeam (4) and two cover thrust screw mechanisms (5) are formed, frame supports holder (1) is installed on the T type trough rail (3) that is cast in the concrete foundation by several bolts (2), many row's threaded holes are arranged on its front end face, framework thrust crossbeam (4) rear side end face is connected in by bolt on the front end face of frame supports holder (1), and two cover thrust screw mechanisms (5) are installed on framework thrust crossbeam (4) anterior end surface and adjustable positions.
2. the framework positioning device that is used for comprehensive parameter detection table of rail vehicle bogie according to claim 1, it is characterized in that: described framework thrust crossbeam (4) anterior end surface is provided with T type groove guide rail and tooth bar (6), thrust screw mechanism (5) is slidingly matched by thrust nut seat slide plate (15) on it and T type groove guide rail, and by T type bolt (16) and T type groove guide rail positioning and fixing.
3. the framework positioning device that is used for comprehensive parameter detection table of rail vehicle bogie according to claim 1 and 2, it is characterized in that: described thrust screw mechanism (5) is mainly by thrust leading screw Universal-head (7), radial force cell (9), thrust leading screw (10) is formed with the assembly that is connected with framework thrust crossbeam (4), described radial force cell (9) is connected in the front end of thrust leading screw (10) by screw thread, described thrust leading screw Universal-head (7) connects the front end that dish (8) is contained in radial force cell (9) by the sensor bulb, it is ball head structure that the sensor bulb connects dish (8) head, cooperates assembling with the ball recess activity of thrust leading screw Universal-head (7).
4. the framework positioning device that is used for comprehensive parameter detection table of rail vehicle bogie according to claim 3, it is characterized in that: thrust is housed on the described thrust leading screw (10) rotates screw (21), thrust is rotated screw (21) and is contained in the thrust nut seat adapter (12) by thrust screw support set (22), and screw (21) is rotated in thrust be pressed in thrust screw support set (22) front end by being connected in thrust screw door (20) on the thrust screw support set (22), thrust screw support set (22) is connected in the front end flange place that the thrust nut seat is taken over (12), and thrust is rotated on screw (21) the front end outer wall and is fixed with thrust feed screw nut handwheel (11).
5. the framework positioning device that is used for comprehensive parameter detection table of rail vehicle bogie according to claim 3, it is characterized in that: the described assembly that is connected with framework thrust crossbeam (4) comprises: the thrust nut seat slide plate (15) that is slidingly matched with framework thrust crossbeam (4) guide rail, be connected in the eccentric nut seat pressure ring (14) of thrust and eccentric nut seat (13) of thrust and gear shaft block (18) on the thrust nut seat slide plate (15) by bolt, eccentric nut seat (13) the one side outer rims of described thrust cooperate with the inboard of the eccentric nut seat gear ring of thrust (23) and are fixed together by bolt, be pressed on the thrust nut seat slide plate (15) by the eccentric nut seat pressure ring of thrust (14), the eccentric nut seat of thrust (13) is taken over (12) by bolt and thrust nut seat and is connected, described gear shaft block (18) is connected on the thrust nut seat slide plate (15), gear shaft (24) is connected by revolute pair with gear shaft block (18), its front end thrust nut seat that is being connected shakes handle (17), rear end and thrust nut seat gear (19) are connected, gear shaft (24) can move axially in gear shaft block (18), drive thrust nut seat gear (19) respectively with tooth bar (6) engagement of eccentric nut seat gear ring (23) of thrust or framework thrust crossbeam (4) anterior end surface.
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| CN2010191000046A CN101813565B (en) | 2010-02-08 | 2010-02-08 | Framework positioning device for comprehensive parameter detection table of rail vehicle bogie |
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| CN2010191000046A CN101813565B (en) | 2010-02-08 | 2010-02-08 | Framework positioning device for comprehensive parameter detection table of rail vehicle bogie |
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| CN102004041B (en) * | 2010-11-08 | 2011-12-28 | 吉林大学 | Semi-vehicle mass simulation state based bogie hanging natural vibration characteristic test bed |
| CN102384853B (en) * | 2011-10-10 | 2013-10-30 | 吉林大学 | Vertical positioning device of rail vehicle body |
| CN102944433B (en) * | 2012-11-07 | 2015-01-07 | 吉林大学 | Architecture locating device for bogie parameter test bench |
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| CN107515126B (en) * | 2017-09-23 | 2024-01-16 | 吉林大学 | Six-degree-of-freedom simulation loading test bed for bogie of monorail train |
| CN110907203B (en) * | 2018-09-18 | 2022-12-06 | 中国北方车辆研究所 | Simulation device for transverse motion platform of railway vehicle |
| CN112349173A (en) * | 2020-09-25 | 2021-02-09 | 中国直升机设计研究所 | General type mounting platform of flight training simulator motion system |
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