CN117213847A - Fatigue degree test device for automobile transmission shaft - Google Patents
Fatigue degree test device for automobile transmission shaft Download PDFInfo
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- CN117213847A CN117213847A CN202311474401.6A CN202311474401A CN117213847A CN 117213847 A CN117213847 A CN 117213847A CN 202311474401 A CN202311474401 A CN 202311474401A CN 117213847 A CN117213847 A CN 117213847A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 82
- 238000012360 testing method Methods 0.000 title abstract description 12
- 238000009661 fatigue test Methods 0.000 claims description 37
- 230000006978 adaptation Effects 0.000 claims description 5
- 238000007688 edging Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000000429 assembly Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The application belongs to the technical field of automobile power transmission experiment systems, and particularly relates to a fatigue degree test device for an automobile transmission shaft, which comprises a frame, wherein the upper end of the frame is provided with a first motor, a fixed fixing seat and a movable fixing seat, the lower end of the inside of the frame is fixedly provided with a supporting plate, the upper end of the supporting plate is fixedly provided with a second motor and a plurality of flange seats, and the fatigue degree test device further comprises: the floating parts are assembled at the upper end of the inside of the frame and are respectively connected with the first motor, the fixed fixing seat and the movable fixing seat, wherein the floating parts connected with the first motor are marked as first floating components. According to the application, the positions of the adjusting rod and the linkage rod are adjusted, so that the vibration condition of the automobile transmission shaft in various scenes can be simulated, and the vibration amplitudes of the driving shaft and the driven shaft can be respectively adjusted, so that the test data is more accurate and diversified.
Description
Technical Field
The application belongs to the technical field of automobile power transmission experiment systems, and particularly relates to a fatigue degree test device for an automobile transmission shaft.
Background
The transmission shaft of the automobile is one of the important parts of the automobile engine, and is used for transmitting the power generated by the engine to the wheels, and mainly comprises a driving shaft, a driven shaft, a telescopic shaft sleeve and a universal joint. Since automobiles are subjected to various complicated forces and vibrations during driving, the drive shaft must have sufficient strength and durability to ensure its normal operation, and it is necessary to perform fatigue test for the quality and reliability of the drive shaft.
At present, the fatigue test of the automobile transmission shaft is mainly carried out in a mode of simulating actual working conditions, specifically, the transmission shaft is arranged on a fatigue degree testing device, the running condition of the automobile is simulated by applying different loads and vibration frequencies, and whether the transmission shaft meets design requirements is judged by monitoring the strain and vibration conditions of the transmission shaft under different loads. In the prior art, when the fatigue test is performed on the automobile transmission shaft, most of fatigue data in an idle speed scene and a vibration scene of a single-shaft rod (a driving shaft or a driven shaft) can be tested, however, in the actual running process of an automobile, the driving shaft and the driven shaft of the automobile vibrate simultaneously with the same or different amplitudes under the influence of factors such as uneven road, obstacles and the like, so that the fatigue test data of the existing device deviate from the actual application scene.
Disclosure of Invention
The application aims to provide a fatigue test device for an automobile transmission shaft, which can simulate the vibration condition of the automobile transmission shaft in various scenes by adjusting the positions of an adjusting rod and a linkage rod, and can respectively adjust the vibration amplitude of a driving shaft and a driven shaft so that test data are more accurate and diversified.
The technical scheme adopted by the application is as follows:
the utility model provides a fatigue test device that car transmission shaft was used, includes the frame, the upper end of frame is equipped with first motor, stationary fixed seat and movable fixed seat, the inside lower extreme of frame is fixed with the layer board, the upper end of layer board is fixed with second motor and a plurality of flange seat, still includes:
the floating parts are assembled at the upper end of the inside of the frame and are respectively connected with the first motor, the fixed fixing seat and the movable fixing seat, wherein the floating parts connected with the first motor are marked as first floating assemblies, and the floating parts connected with the movable fixing seat are marked as second floating assemblies;
the amplitude adjusting parts are assembled at the upper end of the supporting plate, the amplitude adjusting parts are in one-to-one fit with the floating parts, one floating part is connected with the second motor, the amplitude adjusting part connected with the first floating assembly is marked as a first amplitude assembly, the amplitude adjusting part connected with the second floating assembly is marked as a second amplitude assembly, and the second motor is connected with the first amplitude assembly;
the linkage part is assembled in the first amplitude component, and when the linkage part is connected with the second amplitude component, the linkage part can limit the second amplitude component;
after the second motor runs, the amplitude adjusting part can drive the floating part to reciprocate in the vertical direction.
In a preferred scheme, the floating part comprises a lower bottom plate, a guide sleeve, guide posts, an upper bottom plate, a transmission rod and an elastic element, wherein the lower bottom plate is fixed in the frame, the guide sleeve is fixed in four end angles in the lower bottom plate, the guide posts are slidably connected in the guide sleeve, the upper bottom plate is fixed between a plurality of guide posts, the transmission rod is fixed at the lower end of the upper bottom plate, the transmission rod is slidably connected with the lower bottom plate, and the elastic element is assembled between the lower bottom plate and the upper bottom plate.
In a preferred scheme, the amplitude adjustment portion includes first axostylus axostyle, second axostylus axostyle, first rim plate, second rim plate, adjusts pole and drive cam, first axostylus axostyle and second rim plate rotate respectively and connect in the inside of a plurality of flange seats, first rim plate and second rim plate are fixed in the one end that second axostylus axostyle and first rim plate are close to each other respectively, adjust the pole and assemble between first rim plate and second rim plate, drive cam rotates to be connected in the regulation pole outside, just drive cam and drive lever rotate to be connected, wherein, the inside second axostylus axostyle of first amplitude subassembly and second motor fixed connection.
In a preferred scheme, the inside of first rim plate is fixed with the guide bar, just adjust pole and guide bar sliding connection, the inside rotation of second rim plate is connected with the threaded rod, just adjust pole and threaded rod threaded connection.
In a preferred scheme, a plurality of scale marks are arranged at one ends of the first wheel disc and the second wheel disc, which are close to each other, and a plurality of indication marks are arranged on the outer side of the adjusting rod and are matched with the scale marks.
In a preferred scheme, the external screw thread has been seted up to the lower extreme in the threaded rod outside, the lower extreme threaded connection in the threaded rod outside has the lock to pay the piece, the lock is paid the one end that the piece is close to the second rim plate and is provided with a plurality of anti-skidding lines, the limit surface with lock pair piece looks adaptation has been seted up in the outside of second rim plate.
In a preferred scheme, the linkage part comprises a linkage rod, a push rod and a positioning block, wherein the linkage rod is slidably connected inside a first shaft rod in the first amplitude component, the push rod is fixed on the outer side of the linkage rod, the push rod is slidably connected with the first shaft rod, the positioning block is in threaded connection with the outer side of the push rod, and a edging surface matched with the positioning block is arranged on the outer side of the first shaft rod.
In a preferred scheme, a plurality of keyways have been seted up to the outside annular of gangbar, the one end that first axostylus axostyle in the first amplitude subassembly and the first axostylus axostyle in the second amplitude subassembly are close to each other has all been seted up and has been stopped the commentaries on classics groove, just it changes groove and keyway looks adaptation to stop.
The application has the technical effects that:
according to the application, the vibration amplitude of the shaft lever can be adjusted by adjusting the position of the adjusting lever, when the vertical distance between the central axis of the adjusting lever and the central axis of the second shaft lever is zero, the device can perform fatigue test on the automobile transmission shaft in an idle speed scene, when the vertical distance is not zero and the linkage part and the second amplitude component are far away from each other, the device can perform single-shaft vibration fatigue test, when the vertical distance is not zero and the linkage part and the second amplitude component are connected, the device can perform double-shaft vibration fatigue test, so that the device can simulate the vibration condition of the automobile transmission shaft in various scenes, and the fatigue test data is more accurate;
according to the application, the vibration amplitude of the driving shaft and the driven shaft can be respectively adjusted by respectively adjusting the vertical distance between the central axis of the second shaft in the first amplitude component and the central axis of the adjusting rod in the second amplitude component, so that the test data is more diversified and more accurate.
Drawings
FIG. 1 is a schematic view of the overall structure of the present application;
FIG. 2 is a rear elevational view of the overall structure of the present application;
FIG. 3 is a schematic view of the structure of the floating portion of the present application;
fig. 4 is a schematic diagram of the structure of the amplitude adjusting section of the present application;
fig. 5 is a structural cross-sectional view of the amplitude adjusting section of the present application;
FIG. 6 is an exploded view of the structure of the amplitude adjusting section of the present application;
FIG. 7 is a schematic view of a partial assembly of the linkage of the present application;
fig. 8 is a schematic structural view of the linkage part of the present application.
In the drawings, the list of components represented by the various numbers is as follows:
10. a frame;
11. a first motor; 12. a fixed seat; 13. a movable fixing seat; 14. a supporting plate; 15. a second motor; 16. a flange seat;
20. a floating part; 20A, a first floating assembly; 20B, a second floating assembly;
21. a lower base plate; 22. guide sleeve; 23. a guide post; 24. an upper base plate; 25. a transmission rod; 26. an elastic element;
30. an amplitude adjustment unit; 30A, a first amplitude component; 30B, second amplitude component
31. A first shaft; 32. a second shaft; 33. a first wheel disc; 34. a second wheel disc; 35. an adjusting rod; 36. a drive cam; 37. a guide rod; 38. a threaded rod; 39. a locking block;
40. a linkage part;
41. a linkage rod; 42. a push rod; 43. and (5) positioning blocks.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one preferred embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
In describing the embodiments of the present application in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale, and the schematic drawings are only examples, which should not limit the scope of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Referring to fig. 1 and 2, the application provides a fatigue test device for an automobile transmission shaft, which comprises a frame 10, wherein a first motor 11, a fixed seat 12 and a movable seat 13 are assembled at the upper end of the frame 10, a supporting plate 14 is fixed at the lower end inside the frame 10, a second motor 15 and a plurality of flange seats 16 are fixed at the upper end of the supporting plate 14, and the fatigue test device further comprises:
the plurality of floating parts 20 are assembled at the upper end of the interior of the frame 10, and the plurality of floating parts 20 are respectively connected with the first motor 11, the fixed fixing seat 12 and the movable fixing seat 13, wherein the floating part 20 connected with the first motor 11 is marked as a first floating assembly 20A, and the floating part 20 connected with the movable fixing seat 13 is marked as a second floating assembly 20B;
the plurality of amplitude adjusting parts 30, the plurality of amplitude adjusting parts 30 are all assembled at the upper end of the supporting plate 14, the plurality of amplitude adjusting parts 30 are matched with the plurality of floating parts 20 one by one, one floating part 20 is connected with the second motor 15, wherein the amplitude adjusting part 30 connected with the first floating assembly 20A is marked as a first amplitude assembly 30A, the amplitude adjusting part 30 connected with the second floating assembly 20B is marked as a second amplitude assembly 30B, and the second motor 15 is connected with the first amplitude assembly 30A;
a link portion 40, wherein the link portion 40 is assembled inside the first amplitude component 30A, and when the link portion 40 is connected with the second amplitude component 30B, the link portion 40 can limit the second amplitude component 30B;
after the second motor 15 is operated, the floating unit 20 can be driven to reciprocate in the vertical direction by the amplitude adjusting unit 30.
Specifically, in the initial state, the highest points of the first floating assembly 20A and the second floating assembly 20B are located at the same horizontal plane.
It should be noted that, with supporting car transmission shaft and the monitoring module that uses of device still, the car transmission shaft mainly comprises driving shaft, driven shaft, flexible axle sleeve and universal knot fork, and the universal joint fork rotates to be connected between driving shaft and driven shaft, and flexible axle sleeve sets up inside the driven shaft, and the monitoring module can open and close first motor 11 and second motor 15, can also monitor and record load and stress on the car transmission shaft.
In this embodiment, according to the test requirement, the driving shaft and the driven shaft in the automobile transmission shaft are respectively assembled in the fixed fixing seat 12 and the movable fixing seat 13, and one shaft lever is connected with the output end of the first motor 11, when the fatigue test is required to be performed on the automobile transmission shaft in an idling scene, the first motor 11 is started, the automobile transmission is driven to rotate through the output end of the first motor 11, and the strain and vibration conditions of the automobile transmission shaft under different loads are monitored through the monitoring module; when a single-shaft vibration fatigue test is required to be performed on the automobile transmission shaft, the shaft to be vibrated is assembled in the movable fixing seat 13, the shaft which is not required to be vibrated is connected with the output end of the first motor 11, the linkage part 40 is adjusted, so that the linkage part 40 is not contacted with the second vibration amplitude component 30B, the first motor 11 and the second motor 15 are started, the transmission shaft is driven to operate through the first motor 11, the first vibration amplitude component 30A is driven to operate through the output end of the second motor 15, the first floating component 20A and the shaft at the upper end of the first floating component are driven to vibrate through the first vibration amplitude component 30A, and at the moment, the second floating component 20B and the second vibration amplitude component 30B are in a relatively static state, and further the single-shaft vibration fatigue test is performed on the automobile transmission shaft through the device; when the automobile transmission shaft is required to be subjected to double-shaft vibration fatigue test, the linkage part 40 is adjusted, the linkage part 40 is connected with the second amplitude component 30B, the first motor 11 and the second motor 15 are started simultaneously, the transmission shaft is driven to operate through the first motor 11, the first amplitude component 30A is driven to rotate through the output end of the second motor 15, driving force is transmitted to the second amplitude component 30B through the linkage part 40, the second amplitude component 30B synchronously operates, the shaft rod at the upper end of the second amplitude component is driven to vibrate through the first floating component 20A and the second floating component 20B respectively, and further the double-shaft vibration fatigue test is carried out on the automobile transmission shaft through the device, so that fatigue data of an automobile in a running process can be simulated more accurately through the device, and the test data is more accurate.
The idling scene refers to a working condition that the automobile transmission shaft is not vibrated by external force.
Next, referring to fig. 3, the floating portion 20 includes a lower plate 21, a guide sleeve 22, guide posts 23, an upper plate 24, a transmission rod 25 and an elastic element 26, wherein the lower plate 21 is fixed inside the frame 10, the guide sleeve 22 is fixed at four end angles inside the lower plate 21, the guide posts 23 are slidably connected inside the guide sleeve 22, the upper plate 24 is fixed between the guide posts 23, the transmission rod 25 is fixed at the lower end of the upper plate 24, the transmission rod 25 is slidably connected with the lower plate 21, the transmission rod 25 is connected with the amplitude adjusting portion 30, and the elastic element 26 is assembled between the lower plate 21 and the upper plate 24.
Herein, referring to fig. 1 and 2, in the second floating assembly 20B, the upper base plate 24 is fixedly connected with the first motor 11, and the upper base plate 24 is fixedly connected with the fixed seat 12, in the second floating assembly 20B, a U-shaped avoiding groove is formed at one end of the upper base plate 24, which is close to the first motor 11, and the upper base plate 24 is rotatably connected with the movable seat 13.
In the initial state, the upper plates 24 inside the first floating assemblies 20A and the second floating assemblies 20B are all at the same level.
In this embodiment, when the dual-shaft vibration fatigue test is performed on the automobile transmission shaft, the linkage part 40 is adjusted, so that the linkage part 40 is connected with the second amplitude component 30B, the first motor 11 and the second motor 15 are started, the automobile transmission shaft is driven to rotate by the first motor 11, the amplitude adjusting part 30 is driven to operate by the second motor 15, the amplitude adjusting part 30 is connected with the transmission rod 25, the transmission rod 25 is driven to reciprocate in the vertical direction by the amplitude adjusting part 30, the transmission rod 25 is driven to reciprocate in the vertical direction by the fixed connection of the transmission rod 25 and the upper base plate 24, and the driving shaft and the driven shaft are driven to vibrate by the first floating component 20A and the second floating component 20B respectively, so that the device can perform the dual-shaft vibration fatigue test on the automobile transmission shaft.
Still further, referring to fig. 4 to 6, the amplitude adjusting portion 30 includes a first shaft 31, a second shaft 32, a first wheel 33, a second wheel 34, an adjusting lever 35, and a driving cam 36, wherein the first shaft 31 and the second shaft 32 are respectively rotatably connected to the inside of the plurality of flange seats 16 through ball bearings, the first wheel 33 and the second wheel 34 are respectively fixed to one ends of the second shaft 32 and the first wheel 33, which are close to each other, the adjusting lever 35 is assembled between the first wheel 33 and the second wheel 34, the driving cam 36 is rotatably connected to the outside of the adjusting lever 35 through the ball bearings, and the driving cam 36 and the driving lever 25 are rotatably connected through pins, wherein the second shaft 32 and the second motor 15 inside the first amplitude component 30A are fixedly connected.
In this embodiment, the second motor 15 is started, through the fixed connection between the second motor 15 and the second shaft 32 in the first amplitude component 30A, the second motor 15 drives the second shaft 32 to rotate, through the fixed connection between the second shaft 32 and the second wheel disc 34, the second shaft 32 drives the second wheel disc 34 to rotate, because the adjusting rod 35 is assembled between the first wheel disc 33 and the second wheel disc 34 and the transmission cam 36 is rotationally connected to the outer side of the adjusting rod 35, the second wheel disc 34 drives the first wheel disc 33, the adjusting rod 35 and the transmission cam 36 to rotate around the axis of the second shaft 32, wherein when the central axis of the adjusting rod 35 and the central axis of the second shaft 32 do not coincide, the second shaft 32 drives the adjusting rod 35 to do circular motion around the central axis of the second shaft 32, and then drives the first floating component 20A to do reciprocating motion in the vertical direction through the transmission cam 36, so that the device can perform fatigue test on the automobile transmission shaft under the vibration environment; when the central axis of the adjusting rod 35 is coincident with the central axis of the second shaft 32, the adjusting rod 35 is located in the extending direction of the second shaft 32, at this time, the adjusting rod 35 rotates under the driving of the second shaft 32, the transmission cam 36 is in a static state in the vertical direction, meanwhile, the floating part 20 is also in a static state, the automobile transmission shaft is not displaced in the vertical direction, and further the device can perform fatigue test on the automobile transmission shaft in an idling scene.
Further, a guide rod 37 is fixed inside the first wheel 33, an adjusting rod 35 is slidably connected with the guide rod 37, a threaded rod 38 is rotatably connected inside the second wheel 34, and the adjusting rod 35 is in threaded connection with the threaded rod 38.
In this embodiment, in order to better describe the operation process of the device, the vertical distance between the central axis of the second shaft 32 and the central axis of the adjusting rod 35 is denoted as L, the threaded rod 38 is rotated, the threaded rod 38 drives the adjusting rod 35 to move through the threaded connection of the threaded rod 38 and the adjusting rod 35, and the size of L is adjusted, where when L is 0, the central axis of the second shaft 32 and the central axis of the adjusting rod 35 coincide, the amplitude adjusting part 30 cannot drive the floating part 20 to vibrate in the vertical direction, when L is greater than 0, the central axis of the second shaft 32 and the central axis of the adjusting rod 35 do not coincide, the amplitude adjusting part 30 drives the floating part 20 to vibrate in the vertical direction, and the larger the value of L is, the larger the vibration amplitude of the floating part 20 in the vertical direction is, and the larger the vibration amplitude of the transmission shaft is, so that the device can simulate the vibration condition of the automobile transmission shaft under various scenes by adjusting the value of L, and the fatigue test data is more accurate.
Further, a plurality of scale marks are arranged at the ends, close to each other, of the first wheel disc 33 and the second wheel disc 34, a plurality of indication marks are arranged on the outer side of the adjusting rod 35, and the indication marks are matched with the scale marks.
In this embodiment, through the cooperation of scale mark and instruction sign, can accurate regulation L's size, and then accurate regulation and control transmission shaft's vibration amplitude.
In a specific embodiment, when the value of L is 2cm, after the second motor 15 is started, the second shaft 32 and the adjusting rod 35 are driven to rotate by the second motor 15, wherein the adjusting rod 35 performs a circular motion around the axis of the second shaft 32, the diameter of the motion track is 4cm, and then the driving cam 36 is driven by the adjusting rod 35 to perform a reciprocating motion with a stroke of 4cm in the vertical direction, the floating part 20 and the driving shaft are driven by the driving cam 36 to vibrate, and the vibration amplitude of the driving shaft is 4cm.
Further, an external thread is provided at the lower end of the outer side of the threaded rod 38, a locking block 39 is connected at the lower end of the outer side of the threaded rod 38 in a threaded manner, a plurality of anti-slip threads are provided at one end of the locking block 39, which is close to the second wheel disc 34, and a limiting surface adapted to the locking block 39 is provided at the outer side of the second wheel disc 34.
In this embodiment, rotate threaded rod 38, through the cooperation of scale mark and instruction sign, adjust the position of adjusting lever 35, after adjusting, rotate lock and pay piece 39, through the threaded connection of lock pay piece 39 and threaded rod 38, make lock pay piece 39 remove, make lock pay piece 39 and the spacing face in the second rim plate 34 outside closely laminate, form spacing to threaded rod 38 through lock pay piece 39, avoid the device operation in-process, threaded rod 38 takes place to rotate, the value that leads to L changes, causes the car transmission shaft vibration range to change.
Referring to fig. 1, 7 and 8 again, the linkage portion 40 includes a linkage rod 41, a push rod 42 and a positioning block 43, the linkage rod 41 is slidably connected inside the first shaft rod 31 in the first amplitude component 30A, the push rod 42 is fixed on the outer side of the linkage rod 41, the push rod 42 is slidably connected with the first shaft rod 31, the positioning block 43 is threadably connected on the outer side of the push rod 42, and a trimming surface adapted to the positioning block 43 is provided on the outer side of the first shaft rod 31.
In this embodiment, the positioning block 43 is rotated, such that the positioning block 43 and the chamfered surface on the outer side of the first shaft 31 are far away from each other, the push rod 42 is pushed, the linkage rod 41 is driven to slide by the push rod 42, after the linkage rod 41 slides to a proper position, the positioning block 43 is reversely rotated, such that the positioning block 43 is closely attached to the chamfered surface, and a limit is formed on the linkage rod 41 by the positioning block 43, wherein when one end of the linkage rod 41 is located inside the second shaft 32 in the second amplitude component 30B and L is not 0, the linkage rod 41 can transmit the driving force of the second motor 15 to the second amplitude component 30B, and further drive the second amplitude component 30B, the second floating component 20B and the shaft on the upper end of the second floating component 20B to vibrate, and when one end of the linkage rod 41 and the second shaft 32 in the second amplitude component 30B are separated and L is not 0, only the shaft on the upper end of the first floating component 20A vibrates.
It should be noted that, when the linkage rod 41 is connected with the second amplitude component 30B, the vibration amplitude of the two shafts can be adjusted by adjusting the values of L in the first amplitude component 30A and the second amplitude component 30B, so that the test data is more diversified and more accurate.
Referring to fig. 8 again, a plurality of keyways are formed on the outer side of the linkage rod 41 in an annular manner, and rotation stopping grooves are formed at the ends of the first shaft rod 31 in the first amplitude component 30A and the first shaft rod 31 in the second amplitude component 30B, which are close to each other, and are matched with the keyways.
In this embodiment, the link lever 41 can limit the second shaft 32 in the second amplitude block 30B by engagement between the key groove and the rotation groove, and further, the drive force of the second motor 15 is transmitted to the second amplitude block 30B by the link lever 41.
The working principle of the application is as follows:
when the fatigue test is required to be carried out on the automobile transmission shaft, a driving shaft and a driven shaft in the automobile transmission shaft are respectively assembled in the fixed fixing seat 12 and the movable fixing seat 13, a shaft lever (driving shaft or driven shaft) close to the first motor 11 is connected with the first motor 11, when the fatigue test is required to be carried out on the automobile transmission shaft in an idling scene, adjusting rods 35 in a first amplitude component 30A and a second amplitude component 30B are respectively adjusted, so that L in the first amplitude component 30A and the second amplitude component 30B are 0, at the moment, the upper bottom plates 24 in a plurality of floating parts 20 are positioned in the same horizontal plane, the first motor 11 is started, the automobile transmission shaft is driven to rotate by the first motor 11, and then the fatigue test is carried out on the automobile transmission shaft in the idling scene by the device; when a single-shaft vibration fatigue test is required to be performed on an automobile transmission shaft, connecting the shaft (a driving shaft or a driven shaft) to be vibrated with a first motor 11, adjusting the position of a linkage rod 41 to enable the linkage rod 41 to be separated from a second shaft 32 in a second amplitude component 30B, adjusting L in the first amplitude component 30A to enable L to be different from 0, simultaneously starting the first motor 11 and the second motor 15, driving the automobile transmission shaft to rotate through the first motor 11, driving the first amplitude component 30A to operate through the second motor 15, further driving the first motor 11 and the shaft connected with the first motor 11 to vibrate in the vertical direction, and enabling the other shaft to be in a relatively static state in the vertical direction, and further performing the single-shaft vibration fatigue test on the automobile transmission shaft through the device; when the dual-shaft vibration fatigue test is required to be performed on the automobile transmission shaft, the position of the linkage rod 41 is adjusted, so that the linkage rod 41 is connected with the second shaft 32 in the second amplitude component 30B, the adjusting rods 35 in the first amplitude component 30A and the second amplitude component 30B are respectively adjusted, so that L in the first amplitude component 30A and L in the second amplitude component 30B are not 0, and meanwhile the first motor 11 and the second motor 15 are started, and the dual-shaft vibration fatigue test is performed on the automobile transmission shaft through the device; when the vibration amplitude of the shaft rod needs to be adjusted, the adjusting rods 35 in the first amplitude component 30A and the second amplitude component 30B can be adjusted respectively, the larger the value of L is, the larger the vibration amplitude of the shaft rod is, the smaller the value of L is, the smaller the vibration amplitude of the shaft rod is, and when L is 0, the vibration amplitude of the shaft rod is 0.
It should be noted that, when the vibration amplitudes of the two shafts in the automobile transmission shaft are different, the shaft lever located at the upper end of the first amplitude component 30A is kept in a horizontal state in the vibration process, and the shaft lever located at the upper end of the second amplitude component 30B drives the movable fixing seat 13 to incline, and at this time, the U-shaped avoiding groove is set, so that the shaft lever and the upper base plate 24 can be prevented from colliding.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (8)
1. The utility model provides a fatigue test device that car transmission shaft was used, includes frame (10), its characterized in that: the upper end of frame (10) is equipped with first motor (11), stationary fixed seat (12) and movable fixed seat (13), the inside lower extreme of frame (10) is fixed with layer board (14), the upper end of layer board (14) is fixed with second motor (15) and a plurality of flange seat (16), still includes:
the plurality of floating parts (20) are assembled at the upper end of the inside of the frame (10), the plurality of floating parts (20) are respectively connected with the first motor (11), the fixed base (12) and the movable base (13), wherein the floating parts (20) connected with the first motor (11) are marked as a first floating assembly (20A), and the floating parts (20) connected with the movable base (13) are marked as a second floating assembly (20B);
a plurality of amplitude adjusting parts (30), wherein the plurality of amplitude adjusting parts (30) are assembled at the upper end of the supporting plate (14), the plurality of amplitude adjusting parts (30) are in one-to-one fit with the plurality of floating parts (20), one floating part (20) is connected with the second motor (15), the amplitude adjusting part (30) connected with the first floating assembly (20A) is marked as a first amplitude assembly (30A), the amplitude adjusting part (30) connected with the second floating assembly (20B) is marked as a second amplitude assembly (30B), and the second motor (15) is connected with the first amplitude assembly (30A);
a linkage part (40), wherein the linkage part (40) is assembled in the first amplitude component (30A), and when the linkage part (40) is connected with the second amplitude component (30B), the linkage part (40) can limit the second amplitude component (30B);
after the second motor (15) runs, the amplitude adjusting part (30) can drive the floating part (20) to reciprocate in the vertical direction.
2. The fatigue test device for an automotive transmission shaft according to claim 1, wherein: the floating part (20) comprises a lower base plate (21), guide sleeves (22), guide posts (23), an upper base plate (24), a transmission rod (25) and an elastic element (26), wherein the lower base plate (21) is fixed in the frame (10), the guide sleeves (22) are fixed at four end angles in the lower base plate (21), the guide posts (23) are slidably connected in the guide sleeves (22), the upper base plate (24) is fixed between the guide posts (23), the transmission rod (25) is fixed at the lower end of the upper base plate (24), the transmission rod (25) is slidably connected with the lower base plate (21), and the elastic element (26) is assembled between the lower base plate (21) and the upper base plate (24).
3. The fatigue test device for an automotive transmission shaft according to claim 2, wherein: the amplitude adjusting part (30) comprises a first shaft rod (31), a second shaft rod (32), a first wheel disc (33), a second wheel disc (34), an adjusting rod (35) and a transmission cam (36), wherein the first shaft rod (31) and the second shaft rod (32) are respectively connected with the interiors of the flange seats (16) in a rotating mode, the first wheel disc (33) and the second wheel disc (34) are respectively fixed at one ends, close to each other, of the second shaft rod (32) and the first wheel disc (33), the adjusting rod (35) is assembled between the first wheel disc (33) and the second wheel disc (34), the transmission cam (36) is connected with the outer side of the adjusting rod (35) in a rotating mode, and the transmission cam (36) is connected with the transmission rod (25) in a rotating mode, and the second shaft rod (32) in the first amplitude assembly (30A) is fixedly connected with the second motor (15).
4. A fatigue test apparatus for an automotive propeller shaft according to claim 3, wherein: the inside of first rim plate (33) is fixed with guide bar (37), just adjust pole (35) and guide bar (37) sliding connection, the inside rotation of second rim plate (34) is connected with threaded rod (38), just adjust pole (35) and threaded rod (38) threaded connection.
5. A fatigue test apparatus for an automotive propeller shaft according to claim 3, wherein: the one end that first rim plate (33) and second rim plate (34) are close to each other all is provided with a plurality of scale mark, the outside of adjusting pole (35) is provided with a plurality of instruction marks, just instruct sign and scale mark looks adaptation.
6. The fatigue test device for an automotive transmission shaft according to claim 4, wherein: the lower extreme in threaded rod (38) outside has seted up the external screw thread, the lower extreme threaded connection in threaded rod (38) outside has locking piece (39), the one end that locking piece (39) is close to second rim plate (34) is provided with a plurality of anti-skidding lines, the spacing face with locking piece (39) looks adaptation has been seted up in the outside of second rim plate (34).
7. A fatigue test apparatus for an automotive propeller shaft according to claim 3, wherein: the linkage part (40) comprises a linkage rod (41), a push rod (42) and a positioning block (43), wherein the linkage rod (41) is slidably connected inside a first shaft rod (31) in a first amplitude component (30A), the push rod (42) is fixed on the outer side of the linkage rod (41), the push rod (42) is slidably connected with the first shaft rod (31), the positioning block (43) is in threaded connection with the outer side of the push rod (42), and a edging surface matched with the positioning block (43) is arranged on the outer side of the first shaft rod (31).
8. The fatigue test device for an automotive transmission shaft according to claim 7, wherein: a plurality of key grooves are annularly formed in the outer side of the linkage rod (41), and rotation stopping grooves are formed in one ends, close to each other, of the first shaft rod (31) in the first amplitude component (30A) and one ends, close to each other, of the first shaft rod (31) in the second amplitude component (30B), and are matched with the key grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311474401.6A CN117213847B (en) | 2023-11-08 | 2023-11-08 | Fatigue degree test device for automobile transmission shaft |
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| CN202311474401.6A CN117213847B (en) | 2023-11-08 | 2023-11-08 | Fatigue degree test device for automobile transmission shaft |
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| CN117213847B (en) | 2024-01-30 |
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