CN115901205A - Steel plate spring fatigue testing device and using method thereof - Google Patents
Steel plate spring fatigue testing device and using method thereof Download PDFInfo
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- CN115901205A CN115901205A CN202211381097.6A CN202211381097A CN115901205A CN 115901205 A CN115901205 A CN 115901205A CN 202211381097 A CN202211381097 A CN 202211381097A CN 115901205 A CN115901205 A CN 115901205A
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Abstract
The invention discloses a steel plate spring fatigue testing device and a using method thereof, belonging to the technical field of steel plate spring processing, and comprising a rack, wherein a working table plate is arranged on the rack, a stretching driver is arranged on the working table plate and used for realizing the tensile fatigue performance test of a steel plate spring, a linkage device is arranged on the working table plate, and the linkage device comprises a pressing driver, a power switching mechanism and two sliding frames; through setting up tensile driver and clutch, the driver of exerting pressure, the clutch is constituteed to power switching mechanism and carriage, tensile driver carries out tensile fatigue test, the driver of exerting pressure carries out the fatigue test of exerting pressure, tensile driver and the driver of exerting pressure are gone on in turn each other, can simulate the process that the one-on-one effort that automobile driving in-process leaf spring received deformation and carry out fatigue performance test, moreover, the steam generator is simple in structure, and convenient for operation, and can guarantee that the fatigue performance test result is partial to in-service use more, reach the process of a dynamic test.
Description
Technical Field
The invention belongs to the technical field of steel plate spring processing, and particularly relates to a steel plate spring fatigue testing device and a using method thereof.
Background
The steel plate spring is an elastic element which is most widely applied in the automobile suspension, and is an elastic beam which is approximately equal in strength and formed by combining a plurality of alloy spring pieces which are equal in width but unequal in length. At this point, the axle and frame are brought closer together. When the vehicle axle and the vehicle frame are far away from each other, the positive vertical load and deformation borne by the steel plate spring are gradually reduced and sometimes even reversed, and the steel plate spring has the functions of connecting the vehicle frame and the vehicle axle together in a suspension mode, exposing between the vehicle frame and the vehicle axle, bearing the load impact of wheels to the vehicle frame, reducing the violent vibration of a vehicle body, and keeping the running stability of the vehicle and the adaptability to different road conditions.
In order to guarantee normal cushioning effect after leaf spring processing has been made, need detect the biggest tolerance of elasticity of leaf spring, just need carry out fatigue performance test this time, current fatigue test device mostly can only carry out solitary tensile or exert pressure test, the car can appear bumping one by one and lead to leaf spring incurvation or outside tensile phenomenon in the in-process of traveling, and current equipment can not carry out the dynamic fatigue test that a drawing and exerting pressure go on in step to leaf spring.
Disclosure of Invention
The invention aims to provide a steel plate spring fatigue testing device and a using method thereof, and aims to solve the problems that most of the existing fatigue testing devices in the background art can only carry out independent tension or pressure test, the phenomenon that a steel plate spring bends inwards or stretches outwards due to the fact that an automobile jolts one by one in the driving process, and the existing equipment cannot carry out dynamic fatigue test on the steel plate spring synchronously by stretching and pressing.
In order to achieve the purpose, the invention provides the following technical scheme: a steel plate spring fatigue testing device comprises a frame;
the working table plate is arranged on the rack;
the tensile driver is arranged on the working table plate and used for realizing the tensile fatigue performance test of the steel plate spring;
the linkage device is arranged on the working table plate and comprises a pressure application driver, a power switching mechanism and two sliding frames, the power switching mechanism and the two sliding frames are symmetrically arranged on two sides of the pressure application driver respectively, and the power switching mechanism and the sliding frames on the same side are matched with each other for use.
By adopting the scheme, the tension driver and the linkage are arranged, the pressing driver, the linkage formed by the power switching mechanism and the sliding frame, the tension driver performs tension fatigue test, the pressing driver performs pressure fatigue test, the tension driver and the pressing driver are alternately arranged, the fatigue performance test can be performed by simulating the process of one-to-one acting force deformation of the steel plate spring in the driving process of an automobile, the structure is simple, the operation is convenient, the fatigue performance test result is more deviated to actual use, the dynamic test process is achieved, the power switching mechanism and the sliding frame are arranged to be matched for use, the tension block and the conflict block are matched for use when the tension fatigue test is performed, the tension block moves upwards to conflict with the block to form a conflict block when the pressure fatigue test is performed, further, the tension and the pressure are prevented from being crossed alternately, the integral linkage is ensured, the integral work is smooth, the position of the placing seat can be adaptively adjusted by arranging the screw rod for use, the steel plate spring testing of different specifications can be satisfied, the steel plate spring placing seat can be used for testing the steel plate spring with different specifications, the locking rod can be prevented from being inserted into the locking hole by arranging the inserting rod matching with the inserting rod, and the locking rod can be prevented from being loosened in the locking hole.
In the above scheme, it should be noted that the cylinder and the motor are both electrically connected to an external power supply.
As a preferred embodiment, the stretching driver comprises a cylinder installed on a rack, a rack frame installed at the end of a piston rod of the cylinder, a first rotating shaft installed on a working table plate in a rotating mode, a gear fixedly installed on the outer surface of the first rotating shaft and meshed with teeth on the inner wall of the rack frame, an elliptical plate installed on the outer surface of the first rotating shaft and located inside the working table plate, two hinged arms respectively hinged to two ends of the elliptical plate, a first guide plate installed at the end of the hinged arm in a hinged mode and two stretching blocks installed on the upper surface of the first guide plate, wherein two first guide bars are installed on the rack, a first guide groove for sliding of the first guide bar is formed in the lower surface of the rack frame, a plurality of first guide bars are fixedly installed on the left side surface and the right side surface of the inner wall of the working table plate, the first guide plates are installed on the outer surfaces of the plurality of first guide bars on the same side in a sliding mode, and the opposite surfaces of the left stretching block and the right block have arc-shaped surfaces.
Adopt above-mentioned scheme, the rack frame motion can be ordered about to piston rod of the cylinder when extension or shrink, and then utilize the cooperation of rack frame and gear to make a pivot drive elliptical plate rotate, thereby order about a baffle relative motion of both sides under the effect of articulated arm, and then drive the motion of conflict piece through tensile piece, thereby drive the sliding plate motion, and then can stretch the leaf spring both ends, setting up of guide bar can support leading to the motion of rack frame, make the rack frame motion stability better and be difficult for appearing the skew dislocation under the cylinder drive effect, guarantee the smooth meshing of rack board and gear, setting up of guide arm one can support the motion of guide bar one, make the guide plate one stability in the motion process better.
As a preferred embodiment, the pressure applying driver comprises an installation shell installed on the upper surface of the workbench plate, a screw rod, a motor, a moving plate and a connecting block, wherein a second rotating shaft is fixed at two ends of the screw rod, the screw rod is rotatably installed on the inner wall of the installation shell through the second rotating shaft, the motor is installed on the upper surface of the installation shell, an output shaft of the motor is fixedly connected with the second rotating shaft at the top end of the screw rod, the moving plate is installed on the outer surface of the screw rod in a threaded mode, the side surface of the installation shell is provided with a strip-shaped channel, the connecting block penetrates through the strip-shaped channel to extend out of the installation shell and is fixedly connected with the installation plate, a second guide rod is installed on the inner wall of the installation shell, and the moving plate is slidably installed on the outer surface of the second guide rod.
By adopting the scheme, the screw rod is driven to rotate by the second rotating shaft, the screw rod rotates to drive the movable plate to move up and down, the mounting plate is driven to move through the connecting block, the pressing block is driven to move to realize pressing fatigue testing, and the guide rod II can be used for carrying out limiting support on the up-and-down movement of the movable plate, so that the movable plate has better up-and-down movement stability under the rotating action of the screw rod.
As a preferred embodiment, the power switching mechanism comprises a square frame, two pull ropes and a track plate, wherein the square frame is sleeved outside the mounting shell and located below the mounting plate, the two pull ropes are respectively mounted on the left side and the right side of the upper surface of the square frame, the track plate is mounted at the other end of each pull rope, a plurality of guide bars II are fixed on the back surface of the mounting shell, a plurality of guide grooves II for the guide bars II to slide are formed in the inner wall of the square frame, and guide wheels for the pull ropes to pass through are fixedly mounted on the left side surface and the right side surface of the mounting shell.
By adopting the scheme, the square frame is matched with the pull rope and the track plate to apply pressure, the mounting plate can drive the square frame to synchronously move downwards when moving downwards, the track plate can be driven to move upwards through the pull rope when the square frame moves, and then the sliding frames on the two sides can be driven to synchronously move.
As a preferred embodiment, the sliding frame includes two sliding plates slidably mounted on the worktable, two sliding rods slidably mounted on the sliding plates, a connecting plate mounted at the top end of the sliding rods, a contact block mounted at the bottom end of the sliding rods and used in cooperation with the stretching block, a trapezoidal rail block slidably mounted on the inner wall of the rail plate and mounted at the end part of the connecting plate, and a second spring sleeved outside the sliding rods and having two ends respectively connected with the sliding plates and the connecting plate, wherein the sliding plates are provided with two adjusting units and are mounted with a placing seat through the adjusting units.
Adopt above-mentioned scheme, utilize trapezoidal track piece cooperation track board to exert pressure, the trapezoidal track piece of both sides can synchronous relative motion when the track board upward movement, and then can make conflict piece upward movement and form the dislocation state with tensile piece to realize exerting pressure fatigue test, the setting of spring two can make the conflict piece move the back and reset fast simultaneously.
As a preferred embodiment, the adjusting unit comprises a screw rod which is installed on the sliding plate in a threaded manner and a handle which is installed at one end of the screw rod, the other end of the screw rod is rotatably connected with the placing seat, a guide rod four is fixedly installed on the side surface of the placing seat, and the guide rod four is installed on the sliding plate in a sliding manner.
By adopting the scheme, the handle is utilized to drive the screw rod to rotate, the screw rod is rotationally matched with the fourth guide rod to drive the placing seats to move under the limiting effect, and then the distance between the two placing seats can be adjusted in a adaptability manner, so that the steel plate spring with different length specifications can be used.
As a preferred embodiment, it is equipped with the inserted bar to set up through hole and through hole interpolation on the seat to place, the side of placing the seat is fixed with the fixed block, slidable mounting has the locking lever on the fixed block, the top of locking lever is fixed with the jam plate, the outside cover of locking lever is equipped with the spring three that both ends are connected with jam plate and fixed block respectively, set up on the inserted bar and supply lockbar male lockhole.
Adopt above-mentioned scheme, utilize the inserted bar cooperation locking lever to use, order about the locking lever under the elastic action of spring three and insert inside the lockhole on the inserted bar to can lock the inserted bar, and then accomplish the locking to leaf spring, it is not hard up to avoid in the test process leaf spring to appear unexpected, guarantees going on in order smoothly of test operation.
As a preferred embodiment, a guide plate II is installed on the back surface of the track plate, a guide rod III is installed on the guide plate II in a sliding mode, the guide rod III is fixedly installed on the upper surface of the working table plate, a limiting disc is fixed to the top end of the guide rod III, and a spring I with two ends respectively connected with the guide plate II and the limiting disc is sleeved outside the guide rod III.
Adopt above-mentioned scheme, two uses of cooperation baffles of setting up of guide arm three can vertically support the track board, make the track board good and difficult rocking of motion stability under the effect of stay cord, spring one receives the drawing when square frame downstream orders about the stay cord and drives track board upward movement, and then when the square frame of extrusion is not in the mounting panel upward movement, the elasticity that utilizes spring one orders about the track board and resets, and then orders about the square frame and resets, guarantees going on smoothly of next operation.
As a preferred embodiment, the front side surface and the rear side surface of the working table plate are both fixedly provided with a limiting rod, the front side surface and the rear side surface of the sliding plate are both fixedly provided with a connecting rod, the connecting rod is slidably arranged outside the limiting rod, and the outside of the limiting rod is sleeved with a spring four, two ends of the spring four are respectively connected with the working table plate and the connecting rod.
By adopting the scheme, the connecting rod is matched with the limiting rod and the spring for four uses, so that the movement of the sliding plate can be guided and supported, and the sliding plate can not incline in the movement of the working table plate.
A use method of the steel plate spring fatigue testing device comprises the following steps:
s1, adjusting the position of a placing seat, rotating a handle according to the length specification of a leaf spring, driving a screw rod to rotate by the handle to drive the placing seat to move left and right, adjusting to the state that the rolling lugs at two ends of the leaf spring can be placed in two opposite placing seats respectively, and stopping rotating the handle;
s2, placing the steel plate spring, pulling the locking plate upwards, driving the locking plate to move, separating the locking rod from a locking hole in the inserting plate, stretching a third spring, pulling out the inserting rod, placing a rolling lug at the end part of the steel plate spring into the placing seat, adjusting the position of the rolling lug, inserting the inserting rod, enabling the inserting rod to penetrate through the placing seat and the rolling lug, loosening the locking plate, driving the locking rod to reset and insert into the locking hole by utilizing the elasticity of the third spring, and sequentially placing and locking the steel plate spring;
s3, fatigue performance testing, starting a cylinder, driving a rack frame to move by extending a cylinder piston rod, driving a rotating shaft to rotate by a gear under the meshing action of teeth in the rack frame and the gear, driving an elliptical plate to rotate by the rotating shaft, driving two guide plates to move away from each other under the hinging action of a hinged arm, driving a stretching block to move when the guide plates move, driving a contact block to move by the stretching block, driving a sliding plate to move, further driving a placing seat to move, keeping the placing seats on two sides away from each other, then contracting and resetting the cylinder piston rod, realizing the tensile fatigue performance testing on a steel plate spring, starting the motor, driving a rotating shaft two to rotate by the motor, driving a lead screw to rotate by the rotating shaft two, driving a moving plate to move downwards, driving the moving plate to move downwards by a connecting block, driving a pressing block to move downwards by the connecting block through a mounting plate, driving a square frame to move downwards by a pulling rope, driving a track plate to move upwards and driving a sliding block to move upwards by a pulling rope when the track plate is moved downwards under the cooperation action of the track plate and the trapezoidal track block, and driving the motor to move upwards and to perform a reverse operation on the steel plate spring, and then performing a reverse operation process.
Compared with the prior art, the invention has the beneficial effects that:
the steel plate spring fatigue testing device and the using method thereof are characterized in that the tension driver and the linkage are arranged, the pressing driver, the power switching mechanism and the sliding frame form the linkage, the tension driver performs tension fatigue testing, the pressing driver performs pressing fatigue testing, and the tension driver and the pressing driver are alternately performed, so that the fatigue performance testing can be performed by simulating the process of deformation of an upper acting force and a lower acting force applied to a steel plate spring in the driving process of an automobile, the structure is simple, the operation is convenient, the fatigue performance testing result can be ensured to be more biased to actual use, and a dynamic testing process is achieved;
according to the steel plate spring fatigue testing device and the using method thereof, the power switching mechanism is matched with the sliding frame, the stretching block and the abutting block are matched for use when the stretching fatigue test is carried out, the stretching block moves upwards to form dislocation with the abutting block when the pressing fatigue test is carried out, so that the stretching and pressing operations can be alternately carried out without crossing, and the integral linkage is ensured while the integral operation is ensured to be smooth;
the steel plate spring fatigue testing device and the using method thereof can carry out adaptive adjustment on the positions of the placing seats by arranging the screw rods to be matched with each other, meet the requirement of testing steel plate springs with different length specifications, and can carry out comparison testing on two steel plate springs by arranging the four placing seats, thereby further improving the precision of a testing result;
the steel plate spring fatigue testing device and the using method thereof are used by arranging the insertion rod to be matched with the lock rod, the insertion rod is used for placing the seat to limit the steel plate spring eye placed in the placing seat, the spring three-matched lock rod is used for locking after being inserted into the lock hole, looseness cannot occur in the testing process, and smooth and orderly running of testing operation is guaranteed.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is a schematic view of the construction of the frame and worktop of the present invention;
FIG. 4 is a schematic structural view of a cross-section of the inventive work table;
FIG. 5 is a schematic view of the configuration of the stretch driver of the present invention;
FIG. 6 is a schematic view of the linkage of the present invention;
FIG. 7 is a schematic structural diagram of a power switching mechanism and a sliding frame according to the present invention;
FIG. 8 is a schematic view of the carriage of the present invention;
FIG. 9 is a schematic view of the construction of the pressurizing driver of the present invention;
FIG. 10 is a schematic structural view of a cross section of the mounting housing of the present invention;
FIG. 11 is an enlarged view of the structure of FIG. 7 at A.
In the figure: 1. a frame; 2. a work table; 3. a tension driver; 4. a linkage; 5. a pressure application driver; 6. a power switching mechanism; 7. a carriage; 8. mounting a plate; 9. pressing a block; 10. a cylinder; 11. a rack frame; 12. conducting strips I; 13. a first rotating shaft; 14. a gear; 15. an elliptical plate; 16. an articulated arm; 17. a first guide rod; 18. a first guide plate; 19. stretching the block; 20. mounting a shell; 21. a second rotating shaft; 22. a motor; 23. a lead screw; 24. moving the plate; 25. a second guide rod; 26. connecting blocks; 27. a square frame; 28. conducting strips II; 29. pulling a rope; 30. a guide wheel; 31. a track plate; 32. a second guide plate; 33. a third guide rod; 34. a limiting disc; 35. a first spring; 36. a trapezoidal track block; 37. a sliding plate; 38. a slide bar; 39. a contact block; 40. a connecting plate; 41. a second spring; 42. a placing seat; 43. a screw; 44. a guide rod IV; 45. a rod is inserted; 46. a fixed block; 47. a lock lever; 48. a locking plate; 49. a third spring; 50. a fourth spring; 51. a connecting rod; 52. a limiting rod.
Detailed Description
Referring to fig. 1 to 11, the present invention provides a device for testing fatigue of a leaf spring, which includes a frame 1;
the working table plate 2 is arranged on the frame 1;
the tensile driver 3 is arranged on the working table plate 2 and used for realizing the tensile fatigue performance test of the steel plate spring;
the linkage device 4 is arranged on the working table plate 2, the linkage device 4 comprises a pressure application driver 5, a power switching mechanism 6 and two sliding frames 7, the power switching mechanism 6 and the two sliding frames 7 are symmetrically arranged on two sides of the pressure application driver 5 respectively, and the power switching mechanism 6 and the sliding frames 7 on the same side are matched with each other for use.
The stretching driver 3 comprises an air cylinder 10 arranged on a rack 1, a rack frame 11 arranged at the end part of a piston rod of the air cylinder 10, a first rotating shaft 13 rotatably arranged on the working bedplate 2, a gear 14 fixedly arranged on the outer surface of the first rotating shaft 13 and meshed with teeth on the inner wall of the rack frame 11, an oval plate 15 arranged on the outer surface of the first rotating shaft 13 and positioned inside the working bedplate 2, two hinged arms 16 respectively hinged at two ends of the oval plate 15, a first guide plate 18 hinged at the end part of the hinged arm 16 and two stretching blocks 19 arranged on the upper surface of the first guide plate 18, wherein two first guide bars 12 are arranged on the rack 1, a first guide groove for sliding the first guide bar 12 is arranged on the lower surface of the rack frame 11, a plurality of first guide rods 17 are fixedly arranged on the left side surface and the right side surface of the inner wall of the working bedplate 2, and the first guide plates 18 are slidably arranged on the outer surfaces of the plurality of first guide rods 17 on the same side, the opposite surfaces of two opposite stretching blocks 19 on the left and right sides all have arc surfaces, the piston rod of the cylinder 10 can drive the rack frame 11 to move when being stretched or contracted, and then the rotating shaft 13 drives the elliptical plate 15 to rotate by utilizing the matching of the rack frame 11 and the gear 14, so that the guide plate 18 on two sides is driven to move relatively under the action of the hinged arm 16, and then the stretching block 19 drives the contact block 39 to move, so that the sliding plate 37 is driven to move, and then the two ends of the steel plate spring can be stretched, the guide bar 12 can support and guide the movement of the rack frame 11, so that the rack frame 11 has better movement stability under the driving action of the cylinder 10 and is not easy to deviate and misplace, the smooth meshing of the rack plate and the gear 14 is ensured, the guide bar 18 can be supported by the arrangement of the guide bar 17, and the guide plate 18 has better stability in the movement process.
The pressing driver 5 comprises an installation shell 20 installed on the upper surface of the working platen 2, a screw 23, a motor 22, a moving plate 24 and a connecting block 26, wherein two ends of the screw 23 are fixed with two rotating shafts 21, the screw 23 is rotatably installed on the inner wall of the installation shell 20 through the two rotating shafts 21, the motor 22 is installed on the upper surface of the installation shell 20, an output shaft is fixedly connected with the two rotating shafts 21 at the top end of the screw 23, the moving plate 24 is installed on the outer surface of the screw 23 in a threaded mode, a strip-shaped channel is formed in the side surface of the installation shell 20, the connecting block 26 penetrates through the strip-shaped channel to extend out of the installation shell 20 and is fixedly connected with the installation plate 8, a guide rod two 25 is installed on the inner wall of the installation shell 20, the moving plate 24 is installed on the outer surface of the guide rod two 25 in a sliding mode, the screw 23 is driven to rotate by the two rotating shafts 21, the moving plate 24 moves up and down, the connecting block 26 drives the installation plate 8 to move, the pressing block 9 to move to achieve a pressing fatigue test, the guide rod two 25 can limit and support the up and down movement of the moving plate 24, and the moving stability of the moving plate is better under the rotating action of the screw 23.
The power switching mechanism 6 comprises a square frame 27 which is sleeved outside the installation shell 20 and is located below the installation plate 8, two pull ropes 29 which are respectively installed on the left side and the right side of the upper surface of the square frame 27 and a track plate 31 which is installed at the other end of the pull ropes 29, a plurality of guide bars two 28 are fixed on the back surface of the installation shell 20, a plurality of guide grooves two for the guide bars two 28 to slide are formed in the inner wall of the square frame 27, guide wheels 30 for the pull ropes 29 to pass through are fixedly installed on the left side surface and the right side surface of the installation shell 20, the square frame 27 is matched with the pull ropes 29 and the track plate 31 to exert pressure, the installation plate 8 can drive the square frame 27 to move downwards synchronously when moving downwards, the square frame 27 can drive the track plate 31 to move upwards through the pull ropes 29 when moving, and further can drive the sliding frames 7 to move synchronously on the two sides.
The sliding frame 7 comprises two sliding plates 37 slidably mounted on the workbench plate 2, two sliding rods 38 slidably mounted on the sliding plates 37, a connecting plate 40 mounted at the top end of the sliding rods 38, a contact block 39 mounted at the bottom end of the sliding rods 38 and used in cooperation with the stretching block 19, a trapezoidal track block 36 slidably mounted on the inner wall of the track plate 31 and mounted at the end part of the connecting plate 40, and a second spring 41 sleeved outside the sliding rods 38 and having two ends respectively connected with the sliding plates 37 and the connecting plate 40, wherein two adjusting units are arranged on the sliding plates 37, a placing seat 42 is mounted through the adjusting units, pressure is applied by using the trapezoidal track block 36 to cooperate with the track plate 31, the trapezoidal track blocks 36 on two sides synchronously move relatively when the track plate 31 moves upwards, and then the contact block 39 can move upwards and form a dislocation state with the stretching block 19, so that a pressure-applied fatigue test is realized, and the contact block 39 can quickly reset after moving due to the arrangement of the second spring 41.
The adjusting unit comprises a screw 43 and a handle, wherein the screw 43 is installed on the sliding plate 37 in a threaded mode, the handle is installed at one end of the screw 43, the other end of the screw 43 is rotatably connected with the placing seat 42, the side face of the placing seat 42 is fixedly provided with a guide rod four 44, the guide rod four 44 is slidably installed on the sliding plate 37, the handle is utilized to drive the screw 43 to rotate, the screw 43 is rotatably matched with the guide rod four 44 under the limiting effect to drive the placing seat 42 to move, and therefore the distance between the two placing seats 42 can be adjusted adaptively, and the use requirements of the steel plate springs with different length specifications are met.
Place and offer through hole and through hole interpolation on the seat 42 and be equipped with inserted bar 45, the side of placing seat 42 is fixed with fixed block 46, slidable mounting has locking lever 47 on fixed block 46, locking lever 47's top is fixed with jam plate 48, locking lever 47's outside cover is equipped with the spring three 49 that both ends are connected with jam plate 48 and fixed block 46 respectively, offer on the inserted bar 45 and supply locking lever 47 male lockhole, utilize 45 cooperation locking levers 47 of inserted bar to use, it is inside to order about locking lever 47 to insert the lockhole on inserted bar 45 under spring three 49's the elastic reaction, thereby can lock inserted bar 45, and then accomplish the locking to leaf spring, it is not hard up to appear unexpectedly to avoid leaf spring in the testing process, guarantee to test the smooth orderly the going on of operation.
The back of the track plate 31 is provided with a guide plate II 32, the guide plate II 32 is provided with a guide rod III 33 in a sliding manner, the guide rod III 33 is fixedly arranged on the upper surface of the working table plate 2, the top end of the guide rod III 33 is fixedly provided with a limiting disc 34, the outer portion of the guide rod III 33 is sleeved with a spring I35, two ends of the spring I are respectively connected with the guide plate II 32 and the limiting disc 34, the guide rod III 33 is arranged to be matched with the guide plate II 32 for use, the track plate 31 can be longitudinally supported, the track plate 31 is good in movement stability and not prone to shaking under the action of the pull rope 29, the spring I35 is stretched when the pull rope 29 drives the track plate 31 to move upwards under the downward movement of the square frame 27, and then when the mounting plate 8 moves upwards and is not extruding the square frame 27, the track plate 31 is driven to reset by the elasticity of the spring I35, so that the smooth operation of the next time is ensured.
The equal fixed mounting of the front and back both sides face of work platen 2 has gag lever post 52, the equal fixed mounting of the front and back both sides face of sliding plate 37 has connecting rod 51, connecting rod 51 slidable mounting is in the outside of gag lever post 52, the outside cover of gag lever post 52 is equipped with four 50 of spring that both ends are connected with work platen 2 and connecting rod 51 respectively, utilize four 50 uses of connecting rod 51 cooperation gag lever post 52 and spring, can carry out the direction support to the motion of sliding plate 37, make sliding plate 37 can not appear inclining in the motion of work platen 2.
The use method of the steel plate spring fatigue testing device comprises the following steps:
s1, adjusting the position of a placing seat 42, rotating a handle according to the length specification of a leaf spring, driving a screw 43 to rotate by the handle to drive the placing seat 42 to move left and right, and stopping rotating the handle after adjusting the eye curls at the two ends of the leaf spring to be respectively placed into two opposite placing seats 42;
s2, placing the steel plate spring, pulling the locking plate 48 upwards, enabling the locking plate 48 to drive the locking rod 47 to move, enabling the locking rod 47 to be separated from a locking hole in the inserting plate, stretching the third spring 49, pulling out the inserting rod 45, placing a rolling lug at the end part of the steel plate spring into the placing seat 42, adjusting the position of the rolling lug, then inserting the inserting rod 45, enabling the inserting rod 45 to penetrate through the placing seat 42 and the rolling lug, loosening the locking plate 48, driving the locking rod 47 to reset and insert into the locking hole by utilizing the elasticity of the third spring 49, and sequentially placing and locking the steel plate spring;
s3, fatigue performance testing, starting the air cylinder 10, enabling a piston rod of the air cylinder 10 to extend to drive the rack frame 11 to move, enabling the gear 14 to drive the rotating shaft I13 to rotate under the meshing action of the internal teeth of the rack frame 11 and the gear 14, enabling the rotating shaft I13 to drive the elliptical plate 15 to rotate, driving the two guide plates I18 to move away from each other under the hinging action of the hinged arm 16, driving the stretching block 19 to move when the guide plates move, driving the abutting block 39 to move by the stretching block 19, driving the sliding plate 37 to move, further driving the placing seats 42 to move, enabling the placing seats 42 on two sides to be away from each other, then contracting and resetting the piston rod of the air cylinder 10 to realize the tensile fatigue performance testing of the steel plate spring, starting the motor 22, driving the rotating shaft II 21 to rotate by the motor 22, driving the screw rod 23 to rotate by the rotating shaft II to drive the moving plate 24 to move downwards, the moving plate 24 moves downwards through the connecting block 26, the connecting block 26 drives the pressing block 9 to move downwards through the mounting plate 8, the pressing block 9 moves downwards to achieve a pressing fatigue performance test on the steel plate spring, meanwhile, the mounting plate 8 can drive the square frame 27 to move downwards when moving downwards, the square frame 27 moves downwards to drive the track plate 31 to move upwards through the pull rope 29, the connecting plate 40 can move upwards and outwards synchronously when the track plate 31 moves upwards under the matching effect of the track plate 31 and the trapezoidal track block 36, the sliding rod 38 can further drive the contact block 39 to move upwards to form a dislocation state with the stretching block 19, then the motor 22 rotates reversely to reset, the air cylinder 10 and the motor 22 work alternately, and the fatigue performance test operation is performed in the process that the steel plate spring is deformed when the automobile runs by being stressed one on top of another.
Claims (10)
1. The utility model provides a leaf spring fatigue test device which characterized in that: comprises a frame (1);
the workbench plate (2) is arranged on the frame (1);
the tensile driver (3) is arranged on the working table plate (2) and used for realizing the tensile fatigue performance test of the steel plate spring;
the linkage device (4) is arranged on the working table plate (2), the linkage device (4) comprises a pressing driver (5), a power switching mechanism (6) and two sliding frames (7), the power switching mechanism (6) and the two sliding frames (7) are symmetrically arranged on two sides of the pressing driver (5) respectively, and the power switching mechanism (6) and the sliding frames (7) on the same side are matched with each other for use.
2. The leaf spring fatigue test apparatus according to claim 1, wherein: the stretching driver (3) comprises a cylinder (10) installed on a rack (1), a rack frame (11) installed at the end part of a piston rod of the cylinder (10), a first rotating shaft (13) installed on a working table plate (2) in a rotating mode, a gear (14) fixedly installed on the outer surface of the first rotating shaft (13) and meshed with teeth on the inner wall of the rack frame (11), an oval plate (15) installed on the outer surface of the first rotating shaft (13) and located inside the working table plate (2), two hinged arms (16) respectively hinged to the two ends of the oval plate (15), a first guide plate (18) installed at the end part of the hinged arm (16) in a hinged mode and two stretching blocks (19) installed on the upper surface of the first guide plate (18), two first guide plates (12) are installed on the rack (1), a first guide groove (12) for the first guide plate (12) to slide is formed in the lower surface of the rack frame (11), a plurality of first guide rods (17) are fixedly installed on the left side surface and the right side surface of the inner wall of the working table plate (2), and a plurality of first guide plate (18) are installed on the outer surface of the plurality of the first guide rods (17) in a same side, and the left side and the two opposite sides of the stretching blocks (19) are provided with arc-shaped surfaces.
3. The leaf spring fatigue test apparatus of claim 2, wherein: the pressing driver (5) comprises an installation shell (20) installed on the upper surface of the working table plate (2), a lead screw (23) with two ends fixed with two rotating shafts (21) and installed on the inner wall of the installation shell (20) in a rotating mode through the two rotating shafts (21), a motor (22) installed on the upper surface of the installation shell (20) and fixedly connected with the two rotating shafts (21) at the top end of the lead screw (23) through the output shafts, a moving plate (24) installed on the outer surface of the lead screw (23) in a threaded mode, and a connecting block (26) installed on the side face of the moving plate (24), a strip-shaped channel is formed in the side face of the installation shell (20), the connecting block (26) penetrates through the strip-shaped channel to extend out of the installation shell (20) and is fixedly connected with the installation plate (8), a second guide rod (25) is installed on the inner wall of the installation shell (20), and the moving plate (24) is installed on the outer surface of the second guide rod (25) in a sliding mode.
4. The leaf spring fatigue test apparatus according to claim 3, wherein: power switching mechanism (6) establish square frame (27), install two stay cords (29) in square frame (27) upper surface left and right sides and install track board (31) at the stay cord (29) other end respectively at the outside square frame (27) that just is located mounting panel (8) below of installing shell (20) including the cover, the back of installing shell (20) is fixed with a plurality of conducting bar two (28), the gliding guide slot two of a plurality of confession conducting bar two (28) is seted up to the inner wall of square frame (27), the equal fixed mounting of the left and right sides face of installing shell (20) has guide pulley (30) that confession stay cord (29) passed.
5. The leaf spring fatigue test apparatus of claim 4, wherein: the sliding frame (7) comprises two sliding plates (37) slidably mounted on the working table plate (2), two sliding rods (38) slidably mounted on the sliding plates (37), a connecting plate (40) mounted at the top end of the sliding rods (38), a contact block (39) mounted at the bottom end of the sliding rods (38) and used with the stretching block (19) in a matched mode, a trapezoidal track block (36) slidably mounted on the inner wall of the track plate (31) and mounted at the end portion of the connecting plate (40), and a second spring (41) sleeved outside the sliding rods (38) and connected with the sliding plates (37) and the connecting plate (40) at two ends respectively, wherein two adjusting units are arranged on the sliding plates (37) and a placing seat (42) is mounted through the adjusting units.
6. The leaf spring fatigue test apparatus of claim 5, wherein: the adjusting unit comprises a screw rod (43) and a handle, wherein the screw rod (43) is installed on the sliding plate (37) in a threaded mode, the handle is installed at one end of the screw rod (43), the other end of the screw rod (43) is rotatably connected with the placing seat (42), a guide rod four (44) is fixedly installed on the side face of the placing seat (42), and the guide rod four (44) is installed on the sliding plate (37) in a sliding mode.
7. The leaf spring fatigue test apparatus of claim 6, wherein: it is equipped with inserted bar (45) to have seted up through hole and through hole interpolation on seat (42) to place, the side of placing seat (42) is fixed with fixed block (46), slidable mounting has locking lever (47) on fixed block (46), the top of locking lever (47) is fixed with jam plate (48), the outside cover of locking lever (47) is equipped with three (49) of spring that both ends are connected with jam plate (48) and fixed block (46) respectively, offer on inserted bar (45) and supply locking lever (47) male lockhole.
8. The leaf spring fatigue testing apparatus of claim 7, wherein: the back surface of the track plate (31) is provided with a guide plate II (32), the guide plate II (32) is provided with a guide rod III (33) in a sliding mode, the guide rod III (33) is fixedly arranged on the upper surface of the workbench plate (2) and the top end of the guide rod III (33) is fixedly provided with a limiting disc (34), and a spring I (35) with two ends respectively connected with the guide plate II (32) and the limiting disc (34) is sleeved outside the guide rod III (33).
9. The leaf spring fatigue testing apparatus of claim 8, wherein: limiting rods (52) are fixedly mounted on the front side face and the rear side face of the working table plate (2), connecting rods (51) are fixedly mounted on the front side face and the rear side face of the sliding plate (37), the connecting rods (51) are slidably mounted outside the limiting rods (52), and four springs (50) with two ends respectively connected with the working table plate (2) and the connecting rods (51) are sleeved outside the limiting rods (52).
10. A method for using the device for testing fatigue of a leaf spring according to any one of claims 1 to 9, wherein: the method comprises the following steps:
s1, adjusting the position of a placing seat (42), rotating a handle according to the length specification of a leaf spring, driving a screw rod (43) to rotate by the handle to drive the placing seat (42) to move left and right, adjusting the position until the rolling ears at the two ends of the leaf spring can be respectively placed into the two opposite placing seats (42), and stopping rotating the handle;
s2, placing a steel plate spring, pulling a locking plate (48) upwards, driving a locking rod (47) to move by the locking plate (48), separating the locking rod (47) from a locking hole in the inserting plate and stretching a third spring (49), pulling out an inserting rod (45), placing a rolling lug at the end part of the steel plate spring into a placing seat (42), adjusting the position of the rolling lug, inserting the inserting rod (45), enabling the inserting rod (45) to penetrate through the placing seat (42) and the rolling lug, loosening the locking plate (48), driving the locking rod (47) to reset and insert into the locking hole by the elasticity of the third spring (49), and sequentially placing and locking the steel plate spring;
s3, testing fatigue performance, starting an air cylinder (10), enabling a piston rod of the air cylinder (10) to extend to drive a rack frame (11) to move, enabling a gear (14) to drive a first rotating shaft (13) to rotate under the meshing action of internal teeth of the rack frame (11) and the gear (14), enabling the first rotating shaft (13) to drive an elliptic plate (15) to rotate, enabling two first guide plates (18) to move away relatively under the hinging action of a hinged arm (16), driving a stretching block (19) to move when the guide plates move, enabling the stretching block (19) to drive a contact block (39) to move, driving a sliding plate (37) to move, further driving a placing seat (42) to move, enabling placing seats (42) on two sides to be away from each other, then enabling the piston rod of the air cylinder (10) to contract and reset, realizing the tensile fatigue performance test on a steel plate spring, starting a motor (22), enabling the motor (22) to drive a second rotating shaft (21) to rotate, driving a lead screw (23) to rotate, driving a moving plate (24) to move downwards, enabling the moving plate (24) to move downwards through a connecting block (26), enabling the mounting plate (9) to move downwards through a pressing block (9), and enabling a pressing block (8) to move downwards when the mounting plate (9), square frame (27) downstream drives track board (31) upward movement through stay cord (29), make track board (31) upward movement when the mating reaction of track board (31) and trapezoidal track piece (36) down, connecting plate (40) can be synchronous upward movement and outside motion, and then can drive through slide bar (38) and support touch multitouch (39) upward movement and tensile piece (19) formation dislocation state, then motor (22) reversal resets, cylinder (10) and motor (22) work in turn, the steel sheet spring atress is one on the other the deformation process carries out fatigue performance test operation among the simulation automobile driving process.
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| CN202211381097.6A CN115901205B (en) | 2022-11-06 | 2022-11-06 | Leaf spring fatigue test device and use method thereof |
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| CN202211381097.6A CN115901205B (en) | 2022-11-06 | 2022-11-06 | Leaf spring fatigue test device and use method thereof |
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| CN117249992A (en) * | 2023-09-27 | 2023-12-19 | 济南成宇试验设备有限公司 | Spring test device |
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