CN217738599U - Four-degree-of-freedom aircraft tire rigidity test bed - Google Patents
Four-degree-of-freedom aircraft tire rigidity test bed Download PDFInfo
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- CN217738599U CN217738599U CN202221764197.2U CN202221764197U CN217738599U CN 217738599 U CN217738599 U CN 217738599U CN 202221764197 U CN202221764197 U CN 202221764197U CN 217738599 U CN217738599 U CN 217738599U
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Abstract
The utility model discloses an aircraft tire rigidity test bench of four degrees of freedom, including Z to elevating system, X to translation mechanism, Y to translation mechanism and rotary mechanism, Z is equipped with slider two to elevating system including four square tubular stands that are fixed in the ground face to the guide rail two of square tubular stands, is fixed with the pneumatic cylinder roof between the slider two, install worm gear motor two on the ground face. The utility model discloses can realize that the tire is forward, the side direction, vertical and twist reverse the loading, satisfy aircraft tire dynamics test loading and test demand, the motion of four degrees of freedom all adopts worm gear to control and adjust, has the auto-lock nature, guarantees simultaneously that the output is low-speed big moment of torsion, guarantees the heavy load operation of aircraft tire test bench; the double-row double-chain-wheel chain mechanism and the guide rail sliding block mechanism are adopted, so that the transmission mode is simple and convenient to process, the lower support frame is in the inverted triangular square tube frame type, the strength is guaranteed, and meanwhile, the material and the damping function can be saved.
Description
Technical Field
The utility model relates to an aircraft tire field specifically is an aircraft tire rigidity test bench of four degrees of freedom.
Background
The research on the mechanics of the domestic aviation tires is carried out later, and the Guo Konghui of Jilin university establishes a combined tire model on the basis of the tire tensile line theory, can analyze the mechanical characteristics of the tire in the aspects of lateral deviation and lateral inclination, is a semi-physical and semi-empirical mechanical model, is well applied to the analysis of automobile tires, and is not applied to the dynamic analysis of landing gears because the research directions of automobiles and aircraft landing gears are different and the model is not used for the research on the aspect of lateral rigidity. In addition, a Guo Konghui team also establishes a tire cornering stiffness test bed, but the test bed has small load, can only test quasi-static cornering characteristics of rolling tires, and cannot meet the requirement of testing the dynamic performance of airplane tires. The torsional rigidity of the tire under different rolling speeds and different swing frequencies can show larger difference, but when the tire reaches a certain high speed, the torsional rigidity changes less along with the speed; the torsional rigidity of a non-rolling tire is greatly different from that of a rolling tire, so that how to enable the tire to be in different motion states in a test for testing the torsional rigidity of the tire is a problem to be solved by the current aircraft tire dynamic performance test.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides an aircraft tire rigidity test bench of four degrees of freedom, degree of mechanization is high, can realize the tire forward, the side direction, vertical and twist reverse the loading, satisfy aircraft tire dynamics test loading and test demand, it is less to have solved the test bench load, and can only test the quasi-static lateral deviation characteristic of rolling tire, can not satisfy the problem of aircraft tire dynamic behavior test demand, assurance test's accuracy.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a four degree of freedom aircraft tire stiffness test stand, comprising:
the Z-direction lifting mechanism comprises four square pipe stand columns fixed on a ground plane, a second sliding block is sleeved on a second guide rail of each square pipe stand column, a hydraulic cylinder top plate is fixed between the second sliding blocks, a second worm gear reduction motor is installed on the ground plane, the double-shaft end of the second worm gear reduction motor is connected with a first worm gear reducer through two first Z-direction transmission shafts, the second Z-direction transmission shaft at the output end of the first worm gear reducer is connected with a first jacking cylinder through a coupler, and the top end of the first jacking cylinder is connected with the hydraulic cylinder top plate;
the X-direction translation mechanism comprises an upper support frame and a lower support frame arranged on a top plate of the hydraulic cylinder, the top of the upper support frame is provided with a simulated ground, a first slide block at the top of the lower support frame is sleeved with a first guide rail at the bottom of the upper support frame, driven sprockets are arranged on X-direction transmission shafts at two ends of the lower support frame, a first double-row transmission chain is arranged between the driven sprockets, a chain fixing block on the double-row transmission chain is fixed with the bottom surface of the upper support frame, and a driving sprocket on one X-direction transmission shaft is connected with a driving sprocket of a first worm gear reduction motor on the lower support frame through a second double-row transmission chain;
the Y-direction translation mechanism comprises an upper top plate fixed to the top of the square tube stand column, the bottom of the upper top plate is provided with a third guide rail and a third worm gear speed reduction motor, the third guide rail is sleeved with a third slide block, the third slide block is fixedly provided with a tire load supporting plate, an output shaft of the third worm gear speed reduction motor is connected with an input shaft of a second jacking cylinder at the bottom of the upper top plate through a coupling, an output shaft of the second jacking cylinder is connected with a Y-direction push plate, and the Y-direction push plate is fixed with the tire load supporting plate;
the tire loading support plate comprises a rotating mechanism and a driving rotary support, wherein the rotating mechanism comprises a worm gear and worm speed reducing motor IV and the driving rotary support, the worm gear and worm speed reducing motor IV is installed at the bottom of the tire loading support plate, an output shaft of the worm gear and worm speed reducing motor IV is connected with an input end of the driving rotary support, a tire support is fixed on a turntable of the driving rotary support, and a tire to be tested is rotatably installed at the bottom end of the tire support.
Further inject, the quantity of every side pipe stand upper guideway two is two and is located two adjacent faces of side pipe stand respectively, all is fixed with the L template on every slider, the pneumatic cylinder roof erects on the L template and through bolted connection.
Further inject, the carousel side that the drive gyration was supported is fixed with the carousel bearing mounting, the tire support is fixed in on the carousel bearing mounting, the tire that awaits measuring is installed in the pivot of tire support and spacing through round nut and fixed boss, and the summit of the tire that awaits measuring is located the axis of carousel.
Further prescribe that the both ends of bottom suspension strut all are provided with bearing support, X is connected with the bearing frame on the bearing support to the transmission shaft.
Further limiting, and limiting blocks are arranged at the tail ends of the first guide rail and the third guide rail.
Further limiting, the lower support frame comprises an upper frame and a lower frame, reinforcing square tubes which are connected end to end are welded between the upper frame and the lower frame, and a triangular structure is formed between each two adjacent reinforcing square tubes and the upper frame or the lower frame.
Further limiting, a sliding block base plate is arranged on the upper surface of the lower support frame, and the first sliding block is fixed on the upper surface of the sliding block base plate.
The utility model discloses possess following beneficial effect: the utility model discloses can realize that the tire is forward, the side direction, vertical and twist reverse the loading, satisfy aircraft tire dynamics test loading and test demand, the motion of four degrees of freedom all adopts worm gear to control and adjust, has the auto-lock nature, guarantees simultaneously that the output is low-speed big moment of torsion, guarantees the heavy load operation of aircraft tire test bench; the double-row double-chain-wheel chain mechanism and the guide rail sliding block mechanism are adopted, so that the transmission mode is simple and convenient to process, the lower support frame is in the inverted triangular square tube frame type, the strength is guaranteed, and meanwhile, the material and the damping function can be saved.
Drawings
FIG. 1 is an isometric view of the present invention;
fig. 2 is a top view of the X-direction translation mechanism of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a top view of the Z-direction lift mechanism;
fig. 5 is a bottom view of the rotating mechanism.
In the figure: 1. an upper top plate; 2. a square tube column; 3. a second guide rail; 4. a second sliding block; 5. an L-shaped plate; 6. a ground plane; 7. a worm gear reducer; 8. a Z-direction transmission shaft I; 9. a coupling; 10. a worm gear and worm reduction motor II; 11. a first jacking cylinder; 12. a lower support frame; 13. a bearing support; 14. a bearing seat; 15. a limiting block; 16. a first sliding block; 17. a first guide rail; 18. an upper support frame; 19. simulating the ground; 20. a drive sprocket; 21. a first shaft sleeve; 22. an X-direction transmission shaft; 23. a second shaft sleeve; 24. a third shaft sleeve; 25. a first double-row transmission chain; 26. a chain fixing block; 27. a worm gear and worm reduction motor I; 28. a second double-row transmission chain; 29. a shaft end cover; 30. an I-shaped support bar; 31. a driven sprocket; 32. a round nut; 33. fixing the boss; 34. a tire to be tested; 35. a tire support; 36. a worm gear and worm reduction motor IV; 37. a turntable bearing fixing part; 38. a tire load support plate; 39. driving a rotary support; 40. a third sliding block; 41. a third guide rail; 42. a jacking cylinder fixing support; 43. a Y-direction push plate; 44. a bottom motor base; 45. a Z-direction transmission shaft II; 46. a hydraulic cylinder top plate; 47. a slide block backing plate; 48. a worm gear and worm reduction motor III; 49. a lateral fixing plate; 50. and a second jacking cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a four-degree-of-freedom airplane tire rigidity test bed is composed of the following structures:
the Z-direction lifting mechanism is characterized by comprising four square tube stand columns 2 fixed on a ground plane 6, two guide rails two 3 are vertically arranged on each square tube stand column 2 and are respectively positioned on two adjacent surfaces of each square tube stand column 2, two sliders 4 are sleeved on the guide rails two 3 of each square tube stand column 2, each slider is fixedly provided with an L-shaped plate 5, a hydraulic cylinder top plate 46 is erected on the L-shaped plate 5 and is connected with the L-shaped plate 5 through bolts, the movement of the hydraulic cylinder top plate 46 along the Z direction is ensured, the stress of the hydraulic cylinder top plate 46 in the X direction and the stress of the hydraulic cylinder top plate 46 in the Y direction under different load states of a tire can be borne, a worm and gear reduction motor two 10 is arranged on the ground plane 6 through a bottom motor base 44, and the shaft of the worm and gear reduction motor 7 and the shaft of the worm and gear reduction motor two 10 are ensured to be at the same height, the double-shaft end of a single-input double-output worm and gear speed reduction motor II 10 is connected with a worm and gear speed reducer 7 through two Z-direction transmission shafts I8, a Z-direction transmission shaft II 45 at the output end of the worm and gear speed reducer 7 is connected with a jacking cylinder I11 through a coupler 9, the top end of the jacking cylinder I11 is connected with a hydraulic cylinder top plate 46, the output shaft of the worm and gear speed reducer 7 is matched with one-end input shaft of the jacking cylinder I11 through the coupler 9, four corners of the four jacking cylinder I11 are placed, flange surfaces at the top ends of the four jacking cylinder I11 are fixedly connected with the bottom surface of the hydraulic cylinder top plate 46, the bottom of the hydraulic cylinder top plate 46 is guaranteed to be evenly stressed, and the coupler 9 and the Z-direction transmission shaft II 45 match one output shaft of the two jacking cylinder I11 together to enable the output shafts to synchronously rotate.
The controller controls a worm and gear speed reducing motor II 10 to rotate, the worm and gear speed reducing motor II 10 drives two worm and gear speed reducing devices and 4 jacking cylinders I11 to rotate simultaneously through a coupling 9,Z to a transmission shaft I8 and a transmission shaft II 45Z, flange surfaces of the 4 jacking cylinders I11 drive a hydraulic cylinder top plate 46 to lift, 8 guide rails II 3 and 8 sliding blocks II 4 fixed on the square pipe upright post 2 are installed with the hydraulic cylinder top plate 46 through 8L-shaped plates 5, the movement of the hydraulic cylinder top plate 46 along the Z direction is ensured, and the stress of the hydraulic cylinder top plate 46 in the X direction and the stress of the hydraulic cylinder top plate 46 in the Y direction under different tire load states can be borne;
an X-direction translation mechanism, as shown in figures 1 and 2, which comprises an upper support frame 18 and a lower support frame 12 mounted on the top plate 46 of the hydraulic cylinder, the lower support frame 12 comprises an upper frame and a lower frame, reinforced square pipes which are connected end to end are welded between the upper frame and the lower frame, a triangular structure is formed between two adjacent reinforced square pipes and the upper frame or the lower frame, the lower support frame 12 adopts an inverted triangular square pipe frame form, the strength is ensured, meanwhile, the material can be saved and the damping function is achieved, the simulated ground 19 is arranged on the top of the upper support frame 18, the first slide block 16 on the top of the lower support frame 12 is sleeved with the first guide rail 17 on the bottom of the upper support frame 18, the first guide rail 17 is divided into two rows, the limiting block 15 is arranged at the tail end of the first guide rail 17 to realize limiting, the upper surface of the lower support frame 12 is provided with a slide block base plate 47, the first slide block 16 is fixed on the upper surface of the slide block base plate 47, the number of the first slide blocks 16 is ten, and five of the upper support frames are matched with the first guide rail 17 in a group to ensure the movement of the upper support frame 18 along the X direction, bearing supports 13 are arranged at two ends of the lower support frame 12, an X-direction transmission shaft 22 is arranged on a bearing seat 14 of each bearing support 13, driven sprockets 31 are arranged on the X-direction transmission shaft 22 through a first shaft sleeve 21, a second shaft sleeve 23 and a third shaft sleeve 24, a first duplex transmission chain 25 is arranged between the driven sprockets 31, chain fixing blocks 26 on the duplex transmission chain are fixed with the bottom surface of the upper support frame 18, a first worm and gear speed reducing motor 27 is arranged on the lower support frame 12 through an I-shaped support lever 30, a first driving sprocket 20 is arranged at the end part of the first worm and gear speed reducing motor 27 and is limited through a shaft end cover 29, the first driving sprocket 20 is connected with the driving sprocket 20 on one X-direction transmission shaft 22 through a double-row transmission chain II 28;
a Y-direction translation mechanism, as shown in fig. 1, 3 and 5, the Y-direction translation mechanism includes an upper top plate 1 fixed on the top of a square tube column 2, the bottom of the upper top plate 1 is provided with a worm gear speed-reducing motor three 48 through a jacking cylinder fixing support 42, a guide rail three 41 is fixed on the upper top plate 1 through a lateral fixing plate 49, two ends of the guide rail three 41 are provided with limit blocks 15 for limiting, each guide rail three 41 is sleeved with a slide block three 40, a tire load supporting plate 38 is fixed on the slide block three 40, the guide rail three 41 and the slide block three 40 are matched to ensure that the tire load supporting plate 38 moves along the Y direction, an output shaft of the worm gear speed-reducing motor three 48 is connected with an input shaft of a jacking cylinder two 50 at the bottom of the upper top plate 1 through a coupler 9, an output shaft of the jacking cylinder two 50 is connected with a Y-direction push plate 43, and the Y-direction push plate 43 is fixed with the tire load supporting plate 38;
the rotating mechanism comprises a worm and gear speed reducing motor four 36 and a driving rotary support 39 which are arranged at the bottom of the tire load supporting plate 38, an output shaft of the worm and gear speed reducing motor four 36 is connected with an input end of the driving rotary support 39, a rotary disc bearing fixing part 37 is fixed on the side face of a rotary disc of the driving rotary support 39, a tire support 35 is fixed on the rotary disc bearing fixing part 37, the tire 34 to be tested is arranged on a rotating shaft of the tire support 35 and limited by a round nut 32 and a fixing boss 33, and the top point of the tire 34 to be tested is located on the axis of the rotary disc.
The specific working process of the application is as follows:
according to the actual condition of the tire 34 to be tested of the airplane under stress load:
1. aircraft tires are only loaded vertically, and while moving in the X direction:
the controller controls the second worm gear speed reducing motor 10 to rotate and vertically load, the second worm gear speed reducing motor 10 drives the first transmission shaft 8 and the second Z transmission shaft 45 through the shaft coupling 9,Z, simultaneously, the two worm gear speed reducing gears and the first 4 jacking cylinders 11 are driven to rotate, the flange surfaces of the first 4 jacking cylinders 11 drive the hydraulic cylinder top plate 46 to lift, the second 8 guide rails 3 and the second 8 sliding blocks 4 fixed on the square pipe upright post 2 pass through the 8L-shaped plates 5 and the hydraulic cylinder top plate 46, the movement of the hydraulic cylinder top plate 46 along the Z direction is ensured, and the stress of the X direction and the stress of the Y direction, which are applied to the hydraulic cylinder top plate 46 under different load states of the tire 34 to be tested, can be borne.
The controller controls a first worm gear speed reducing motor 27 to rotate to drive the upper support frame 18 and the simulated ground 19 to move along the X direction, the first worm gear speed reducing motor 27 drives an X-direction transmission shaft 22 to rotate through a chain wheel and chain mechanism of a driving chain wheel 20, a shaft end cover 29 plays a role in fixing the shaft end of the driving chain wheel 20, the X-direction transmission shaft 22 drives a chain wheel and chain mechanism where a driven chain wheel 31 is located to rotate, bearing seats 14 are located at two ends of the chain wheel and chain and play a role in fixing the shaft end with a first shaft sleeve 21, a second shaft sleeve 23 and a third shaft sleeve 24, the chain fixing blocks 26 on the second double-row chain drive the upper support frame 18 to move in the X direction, a pair of first guide rails 17 are fixed on the upper support frame 18, 10 slide blocks are symmetrically arranged, one surface is five, the one surface is fixed on a hydraulic cylinder top plate 46 through a slide block base plate 47 and matched with the pair of first guide rails 17, and movement of the upper support frame 18 along the X direction is guaranteed.
2. Aircraft tire is subjected to vertical, lateral, torsional loading, and X-direction movements:
the controller controls the second worm gear speed reducing motor 10 to rotate for vertical loading, the second worm gear speed reducing motor 10 drives the first transmission shaft 8 and the second transmission shaft 45 in the Z direction through the coupler 9,Z, the two worm gear speed reducing motors and the first 4 jacking cylinders 11 are driven to rotate simultaneously, the flange surfaces of the first 4 jacking cylinders 11 drive the hydraulic cylinder top plate 46 to lift, 8 guide rails two 3 and 8 sliding blocks two 4 mechanisms fixed on the square pipe upright post 2 pass through 8L-shaped plates 5 and the hydraulic cylinder top plate 46, the movement of the hydraulic cylinder top plate 46 in the Z direction is guaranteed, and the stress in the X direction and the stress in the Y direction, which are received by the hydraulic cylinder top plate 46 under different load states of the tire to be tested, can be borne.
The controller controls a worm and gear speed reducing motor four 36 to twist and load, the worm and gear speed reducing motor four 36 drives the driving turntable bearing to rotate, and the turntable bearing fixing part 37, the tire support 35, the tire to be tested 34, the fixing boss 33 and the round nut 32 rotate together with the driving rotary support 39.
The controller controls a worm gear speed reducing motor III 48 to be laterally loaded, the worm gear speed reducing motor III 48 drives output shafts of two jacking cylinders II 50 to ascend through a coupler 9, flange surfaces of the jacking cylinders II 50 push a Y-direction push plate 43 and a tire load supporting plate 38 to achieve Y-direction translation movement, a guide rail III 41 is fixed on an upper top plate 1 through a lateral fixing plate 49, a sliding block III 40 is fixed on the tire load supporting plate 38, and the guide rail III 41 and the sliding block III 40 are matched to ensure that the tire load supporting plate 38 moves along the Y direction.
The controller controls a first worm gear speed reducing motor 27 to rotate to drive the upper support frame 18 and the simulated ground 19 to move along the X direction, the first worm gear speed reducing motor 27 drives an X-direction transmission shaft 22 to rotate through a chain wheel and chain mechanism of a driving chain wheel 20, a shaft end cover 29 plays a role of fixing the shaft end of the driving chain wheel 20, the X-direction transmission shaft 22 drives a chain wheel and chain mechanism where a driven chain wheel 31 is located to rotate, a chain fixing block 26 on a double-row chain II drives the upper support frame 18 to move in a translation mode, a pair of first guide rails 17 is fixed on the upper support frame 18, a plurality of sliding blocks are symmetrically arranged, one side is five, the sliding blocks are fixed on a hydraulic cylinder top plate 46 through sliding block base plates 47 and matched with the pair of first guide rails 17, and the movement of the upper support frame 18 along the X direction is guaranteed.
The utility model discloses can realize the 34 forward of the tire that awaits measuring, the side direction, vertical and twist reverse the loading, satisfy aircraft tire dynamics test loading and test demand, the motion of four degrees of freedom all adopts worm gear to control and adjust, has auto-lock nature, guarantees simultaneously that the output is the big moment of torsion of low-speed, guarantees the heavy load operation of aircraft tire test bench.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A four-degree-of-freedom aircraft tire rigidity test bed is characterized by comprising:
the Z-direction lifting mechanism comprises four square pipe stand columns fixed on a ground plane, a second sliding block is sleeved on a second guide rail of each square pipe stand column, a hydraulic cylinder top plate is fixed between the second sliding blocks, a second worm gear reduction motor is installed on the ground plane, the double-shaft end of the second worm gear reduction motor is connected with a first worm gear reducer through two first Z-direction transmission shafts, the second Z-direction transmission shaft at the output end of the first worm gear reducer is connected with a first jacking cylinder through a coupler, and the top end of the first jacking cylinder is connected with the hydraulic cylinder top plate;
the X-direction translation mechanism comprises an upper support frame and a lower support frame arranged on a top plate of the hydraulic cylinder, the top of the upper support frame is provided with a simulated ground, a first slide block at the top of the lower support frame is sleeved with a first guide rail at the bottom of the upper support frame, driven sprockets are arranged on X-direction transmission shafts at two ends of the lower support frame, a first double-row transmission chain is arranged between the driven sprockets, a chain fixing block on the double-row transmission chain is fixed with the bottom surface of the upper support frame, and a driving sprocket on one X-direction transmission shaft is connected with a driving sprocket of a first worm gear reduction motor on the lower support frame through a second double-row transmission chain;
the Y-direction translation mechanism comprises an upper top plate fixed to the top of the square tube stand column, the bottom of the upper top plate is provided with a third guide rail and a third worm gear speed reduction motor, the third guide rail is sleeved with a third slide block, the third slide block is fixedly provided with a tire load supporting plate, an output shaft of the third worm gear speed reduction motor is connected with an input shaft of a second jacking cylinder at the bottom of the upper top plate through a coupling, an output shaft of the second jacking cylinder is connected with a Y-direction push plate, and the Y-direction push plate is fixed with the tire load supporting plate;
the tire loading support plate comprises a rotating mechanism and a driving rotary support, wherein the rotating mechanism comprises a worm gear and worm speed reducing motor IV and the driving rotary support, the worm gear and worm speed reducing motor IV is installed at the bottom of the tire loading support plate, an output shaft of the worm gear and worm speed reducing motor IV is connected with an input end of the driving rotary support, a tire support is fixed on a turntable of the driving rotary support, and a tire to be tested is rotatably installed at the bottom end of the tire support.
2. The four degree-of-freedom aircraft tire stiffness test stand of claim 1, wherein: the number of the second guide rail on each square tube stand column is two, the second guide rail on each square tube stand column is located on two adjacent faces of each square tube stand column respectively, an L-shaped plate is fixed on each sliding block, and the hydraulic cylinder top plate is erected on the L-shaped plate and connected through bolts.
3. The four degree of freedom aircraft tire stiffness test rig of claim 2, wherein: the carousel side that the drive gyration was supported is fixed with the carousel bearing mounting, the tire support is fixed in on the carousel bearing mounting, the tire that awaits measuring is installed in the pivot of tire support and spacing through round nut and fixed boss, and the summit of the tire that awaits measuring is located the axis of carousel.
4. The four degree of freedom aircraft tire stiffness test rig of claim 3, wherein: bearing supports are arranged at two ends of the lower support frame, and the X-direction transmission shaft is connected with bearing seats on the bearing supports.
5. The four degree of freedom aircraft tire stiffness test rig of claim 4, wherein: and the tail ends of the first guide rail and the third guide rail are provided with limiting blocks.
6. The four degree-of-freedom aircraft tire stiffness test stand of claim 5, wherein: the lower support frame comprises an upper frame and a lower frame, reinforcing square tubes which are connected end to end are welded between the upper frame and the lower frame, and a triangular structure is formed between each two adjacent reinforcing square tubes and the upper frame or the lower frame.
7. A four degree of freedom aircraft tire stiffness test rig according to any one of claims 1 to 6, wherein: the upper surface of the lower support frame is provided with a sliding block base plate, and the first sliding block is fixed on the upper surface of the sliding block base plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221764197.2U CN217738599U (en) | 2022-07-08 | 2022-07-08 | Four-degree-of-freedom aircraft tire rigidity test bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221764197.2U CN217738599U (en) | 2022-07-08 | 2022-07-08 | Four-degree-of-freedom aircraft tire rigidity test bed |
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| CN217738599U true CN217738599U (en) | 2022-11-04 |
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| CN202221764197.2U Active CN217738599U (en) | 2022-07-08 | 2022-07-08 | Four-degree-of-freedom aircraft tire rigidity test bed |
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