Front control arm bushing durability test tool

Abstract

The invention provides a front control arm bushing durability test tool. Relates to the technical field of automobile part performance test. The front control arm lining durability test tool comprises two folded supporting plates, the tops of the two folded supporting plates are fixedly provided with the same bearing platform, two arc-shaped rotating pieces are arranged below the bearing platform, simulation swing arms are arranged on the inner ring walls of the two arc-shaped rotating pieces, and the simulation swing arms are arranged on the inner ring walls of the two arc-shaped rotating pieces. A plurality of first teeth are fixedly installed on the outer ring walls of the two arc-shaped rotating pieces, two lifting strips are slidably installed on the bearing platform, a plurality of second teeth are fixedly installed on the sides, close to each other, of the two lifting strips, and the first teeth are meshed with the second teeth; the two simulation swing arms are both provided with bushing holes, and the tops of the two lifting strips are both fixedly provided with adapters. The device has the advantages that the test efficiency is remarkably improved, and the bushing is simple and quick to replace.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts performance testing, and in particular to a front control arm bushing durability testing tool. Background Art

[0002] Among automobile parts, the front control arm is one of the important parts in the entire automobile suspension system. Its main function is to transmit the force and torque between the wheel and the frame, while buffering the impact caused by uneven road surface, reducing vibration, and ensuring the smooth driving of the car. Usually, the front control arm is connected to the subframe at the bottom of the vehicle, and the connection between the two is generally formed by a bushing. This bushing is die-casted with two inner and outer steel rings and rubber in the middle. Through the ductility of rubber, the front control arm can swing while reducing the wear speed and degree of the connection with the subframe, thereby ensuring that the vehicle can maintain good driving performance on various road surfaces.

[0003] During the production process of bushings, in order to obtain the durability of the bushings, durability tests are generally carried out on them. First, a certain number of bushings in the same batch are selected as samples, and then they are placed in special durability test tooling equipment for testing. After the test, the strength of its durability is determined by observing the degree of wear.

[0004] However, when using the current test equipment, it was found that a large number of bushings need to be tested in the process of mass production of bushings, and each test process can only test one bushing. In addition, after each bushing is tested, it is necessary to remove the tested bushing through another pressure equipment, and then press the next bushing into the bushing hole before the next test can be carried out. The replacement of the bushing is relatively complicated, which leads to the fact that the test efficiency has not been improved, and the complexity of the operation during the test process is increased.

[0005] Therefore, it is necessary to provide a front control arm bushing durability test tool to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a front control arm bushing durability test tool with significantly improved test efficiency and simple and quick bushing replacement.

[0007] In order to solve the above technical problems, the front control arm bushing durability test tool provided by the present invention comprises: two folding support plates, the top of the two folding support plates is fixedly installed with the same bearing platform, two arc-shaped rotating plates are arranged below the bearing platform, the inner ring walls of the two arc-shaped rotating plates are provided with simulated swing arms, the outer ring walls of the two arc-shaped rotating plates are fixedly installed with a plurality of first teeth, two lifting bars are slidably installed on the bearing platform, a plurality of second teeth are fixedly installed on the sides of the two lifting bars close to each other, the first teeth are meshed with the second teeth, and the two mock swing arms are fixedly installed on the outer ring walls of the two arc-shaped rotating plates. Bushing holes are provided on the simulated swing arms, adapters are fixedly installed on the tops of the two lifting bars, a gantry is fixedly installed on the top of the carrying platform, first driven shafts are rotatably installed on both sides of the gantry, and the ends of the two first driven shafts close to each other are fixedly installed with object-carrying discs, and the sides of the two object-carrying discs close to each other are fixedly installed with eccentric shafts, and linkage bars are rotatably installed on the two eccentric shafts, and the bottoms of the two linkage bars are respectively hinged to the two adapters, and the same rotation center unit is provided between the two arc-shaped rotating sheets, which can provide a rotation center for the two simulated swing arms;

[0008] A suspended frame is provided above the rotating center unit, and a second bidirectional screw is rotatably installed in the suspended frame. A second driving motor is fixedly installed on one side of the suspended frame, and an output shaft of the second driving motor is fixedly connected to one end of the second bidirectional screw. Two connecting plates are threadedly installed on the second bidirectional screw, and a connecting frame is fixedly installed at the bottom of the two connecting plates. A placing plate is fixedly installed in the two connecting frames, and two main pressure columns are provided in the two placing plates, and two auxiliary pressure columns are provided in one of the placing plates. The two auxiliary pressure columns are coaxial with the two main pressure columns and are adapted, and a pushing unit is provided at the bottom of the two placing plates for pushing the main pressure column to move horizontally, so as to eject the tested bushing in the bushing hole, and then push the next bushing into the bushing hole.

[0009] Preferably, the two simulated swing arms are fixedly connected to the inner ring walls of the two arc-shaped rotating plates respectively, and the suspended top frame is fixedly connected to the bearing platform via two suspension arms.

[0010] Preferably, two connecting plates are fixedly installed at the bottom of the supporting platform, and arc-shaped supporting slide rods are slidably installed on the two connecting plates. Among the two arc-shaped rotating plates, a first connecting plate is fixedly installed on the inner ring wall of one of the arc-shaped rotating plates, and a second connecting plate is fixedly installed on the outer ring wall of the other arc-shaped rotating plate. The bottom ends of the two arc-shaped supporting slide rods are fixedly connected to the first connecting plate and the second connecting plate respectively.

[0011] Preferably, a second driven shaft is rotatably installed on the top of the gantry, two bracket plates are fixedly installed on the top of the gantry, the same active transmission shaft is rotatably installed on the two bracket plates, first bevel teeth are fixedly installed on the two first driven shafts and the two second driven shafts, and the corresponding two first bevel teeth are meshed with each other, second bevel teeth are fixedly installed on the active transmission shaft and the two second driven shafts, and the corresponding two second bevel teeth are meshed with each other, a first driving motor is fixedly installed on the top of the gantry, circular gears are fixedly installed on the output shaft of the first driving motor and the active transmission shaft, and the two circular gears are meshed with each other.

[0012] Preferably, the rotating center unit includes a rectangular frame sleeve, which is arranged between two folding support plates, a hollow column is slidably installed on the top of the rectangular frame sleeve, a lifting screw is rotatably installed on the bottom of the rectangular frame sleeve, the top of the lifting screw extends into the hollow column and is threadedly connected to the bottom of the hollow column, a third drive motor is fixedly installed on the bottom of the rectangular frame sleeve, the output shaft of the third drive motor is fixedly connected to the bottom end of the lifting screw, a bearing seat is fixedly installed on the top of the hollow column, swing openings are opened on both sides of the bearing seat, and the sides of the two simulated swing arms close to each other extend to the two swing openings respectively. Inside, and the inner walls on both sides of the two swinging mouths are provided with through holes, the through holes are coaxial with the bushing holes, two first C-shaped frames are fixedly installed on the hollow column, and the first bidirectional screws are rotatably installed in the two first C-shaped frames, and two first transverse plates are threadedly installed on the two first bidirectional screws, and the corresponding two first transverse plates are fixedly installed with central axes on the sides close to each other, and the four central axes are coaxial with the corresponding bushing holes, and fourth drive motors are fixedly installed on the outer walls of one side of the two first C-shaped frames, and the output shafts of the two fourth drive motors are respectively fixedly connected to one end of the two first bidirectional screws.

[0013] Preferably, the rotating center unit is fixedly connected to two folding support plates via two connecting beams.

[0014] Preferably, any one of the pushing units includes a second C-shaped frame, which is fixedly mounted on the bottom of the placement plate, a one-way screw is rotatably mounted in the second C-shaped frame, a fifth drive motor is fixedly mounted on an outer wall of one side of the second C-shaped frame, an output shaft of the fifth drive motor is fixedly connected to one end of the one-way screw, a second transverse plate is threadedly mounted on the one-way screw, two pushing rods are fixedly mounted on the side of the second transverse plate close to the placement plate, and the two pushing rods are fixedly connected to the corresponding main pressure columns.

[0015] Preferably, a partition plate is fixedly installed on the top of the two placement plates, and the two main pressure columns and the two auxiliary pressure columns on the placement plates are separated by the partition plate.

[0016] Preferably, the suspended ceiling frame is detachably connected to the bearing platform, the simulated swing arm is separated from the arc-shaped rotating sheet, there are four groups of rotating center units, and the through holes and center axis diameters opened between each group are different, the bottoms of the two folding support plates are fixedly installed with the same bottom support, the top of the bottom support is fixedly installed with a back plate, a bearing shaft is rotatably installed on the back plate, a transposition disk is fixedly installed on one end of the bearing shaft, the transposition disk passes through the bottom support and is movably connected to the bottom support, a fixing seat is fixedly installed on the inner ring wall of the two arc-shaped rotating sheets, both of the fixing seats are provided with dovetail grooves, both of the dovetail grooves are inserted with dovetail inserts, and the two dovetail grooves are provided with dovetail inserts. The sides of the tail plug strips that are close to each other are fixedly connected with the two simulated swing arms respectively, and positioning countersunk holes are opened on the tops and bottoms of the two dovetail plug strips, and directional rods are fixedly installed on the tops and bottoms of the two fixing seats, and pull-connecting plates are slidably installed on the four directional rods, and positioning plug rods are slidably installed on the tops and bottoms of the two fixing seats, and the ends of the corresponding two positioning plug rods that are away from each other are fixedly connected with the corresponding pull-connecting plates, and the ends of the corresponding two positioning plug rods that are close to each other extend into the corresponding positioning countersunk holes, and baffles are fixedly installed on the ends of the four directional rods, and second compression springs are sleeved on the four directional rods, and the two ends of the second compression spring are respectively fixedly connected with the baffle and the pull-connecting plate.

[0017] Preferably, a flat top plate is fixedly installed on the top of the back plate, and a buckling groove is provided on the flat top plate, and four movable cavities are provided on the outer ring wall of the transposition disc, and a locking head is slidably installed in the four movable cavities, and the top of the locking head located at the top extends into the buckling groove, and a return spring is fixedly installed in the four movable cavities, and the ends of the four return springs away from each other are fixedly connected to the corresponding locking heads, and a slide is fixedly installed on the top of the flat top plate, and a tamping rod is slidably installed on the slide, and the tamping rod is adapted to the locking head, and a pressing piece is fixedly installed on the top of the tamping rod, and a first compression spring is sleeved on the tamping rod, and the top of the first compression spring is fixedly connected to the pressing piece, and the bottom end of the first compression spring is fixedly connected to the top of the slide.

[0018] Compared with the related art, the front control arm bushing durability test tool provided by the present invention has the following features:

[0019] Beneficial effects:

[0020] 1. The present invention can perform two simulation tests simultaneously in one test process by providing two arc-shaped rotating pieces, two simulation swing arms and a rotating center unit capable of carrying the two simulation swing arms, thereby improving the test efficiency;

[0021] 2. The present invention arranges a main pressure column and an auxiliary pressure column on the placement plate, as well as two groups of pushing units for pushing the bushing to move. After the previous bushing test is completed, the auxiliary pressure column is used to push it out, and then the main pressure column is used to push the next bushing to be tested into the bushing hole on the simulated swing arm. In this way, the bushing can be quickly replaced and quickly put into the next test work, which further improves the work efficiency of the test process and is more suitable for large-scale bushing production work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A front schematic diagram of a first embodiment of a front control arm bushing durability test tool provided by the present invention;

[0023] Figure 2 An oblique bottom view schematic diagram of a first embodiment of a front control arm bushing durability test tool provided by the present invention;

[0024] Figure 3 A schematic diagram of the assembly of the arc-shaped rotating piece and the lifting strip in the first embodiment of the front control arm bushing durability test tool provided by the present invention;

[0025] Figure 4 It is a schematic assembly diagram of a rotating center unit and a jacking unit in the first embodiment of the front control arm bushing durability test tool provided by the present invention;

[0026] Figure 5 A partial cross-sectional structural diagram of a rectangular frame sleeve and a hollow column in the first embodiment of the front control arm bushing durability test tool provided by the present invention;

[0027] Figure 6 A bottom view structural diagram of a rotating center unit and a pushing unit in a first embodiment of a front control arm bushing durability test tool provided by the present invention;

[0028] Figure 7 A schematic diagram of the connection structure of the hollow column and the first C-shaped frame in the first embodiment of the front control arm bushing durability test tool provided by the present invention;

[0029] Figure 8 It is a schematic diagram of assembling the main pressure column and the auxiliary pressure column of the first embodiment of the front control arm bushing durability test tool provided by the present invention;

[0030] Fig. 9A schematic diagram of the internal structure of the suspended top frame in the first embodiment of the front control arm bushing durability test tool provided by the present invention;

[0031] Fig.10 A front schematic diagram of a second embodiment of a front control arm bushing durability test tool provided by the present invention;

[0032] Fig.11 A schematic diagram of the rear structure of the second embodiment of the front control arm bushing durability test tool provided by the present invention;

[0033] Fig.12 A schematic diagram of assembling a simulated swing arm and a fixing seat in the second embodiment of the front control arm bushing durability test tool provided by the present invention;

[0034] Fig.13 A schematic diagram of the assembly of the bottom bracket and the transposition disc in the second embodiment of the front control arm bushing durability test tool provided by the present invention;

[0035] Fig.14 A schematic diagram of the connection structure of the bottom bracket and the back plate in the second embodiment of the front control arm bushing durability test tool provided by the present invention;

[0036] Fig.15 A schematic cross-sectional view of the transposition disc in the second embodiment of the front control arm bushing durability test tool provided by the present invention;

[0037] Fig.16 for Fig.15 A schematic diagram of the enlarged structure of part A shown;

[0038] Fig.17 A schematic diagram of the disassembled state of the dovetail groove and the dovetail insert in the second embodiment of the front control arm bushing durability test tool provided by the present invention;

[0039] Fig.18 This is a schematic diagram of the connection structure of the suspended top frame in the second embodiment of the front control arm bushing durability test tool provided by the present invention.

[0040] Numbers in the figure: 1, folding support plate; 2, bearing platform; 3, arc-shaped rotating piece; 4, simulated swing arm; 5, first tooth; 6, lifting bar; 7, second tooth; 8, bushing hole; 9, connecting plate; 10, arc-shaped support slide; 11, adapter; 12, gantry; 13, first driven shaft; 14, load-carrying disc; 15, eccentric shaft; 16, linkage bar; 17, second driven shaft; 18, active transmission shaft; 19, first bevel gear; 20, second bevel gear; 21, rectangular frame; 22, hollow column; 23, lifting screw; 24, bearing seat; 25, swing mouth; 26, connecting beam; 27, first U-shaped frame; 28, first bidirectional lead screw; 29, first transverse plate; 3 0. Central axis; 31. Suspended top frame; 32. Second bidirectional lead screw; 33. Frame connecting plate; 34. Connecting frame; 35. Placement plate; 36. Partition plate; 37. Second U-shaped frame; 38. One-way lead screw; 39. Second transverse plate; 40. Push rod; 41. Main pressure column; 42. Auxiliary pressure column; 43. Bottom bracket; 44. Back plate; 45. Bearing shaft; 46. Transposition disk; 47. Flat top plate; 48. Snap-in groove; 49. Movable cavity; 50. Positioning head; 51. Return spring; 52. Slide; 53. Ramming rod; 54. Fixed seat; 55. Dovetail groove; 56. Dovetail insert; 57. Positioning countersunk hole; 58. Directional rod; 59. Pulling plate; 60. Positioning insert. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0042] First embodiment:

[0043] Please refer to Figure 1-Figure 9In the first embodiment of the present invention, the front control arm bushing durability test tool comprises: two folding support plates 1, and the same bearing platform 2 is fixedly installed on the top of the two folding support plates 1, and two arc-shaped rotating pieces 3 are arranged below the bearing platform 2, and the inner ring walls of the two arc-shaped rotating pieces 3 are fixedly installed with simulated swing arms 4, and the outer ring walls of the two arc-shaped rotating pieces 3 are fixedly installed with a plurality of first teeth 5, and two lifting bars 6 are slidably installed on the bearing platform 2, and the sides of the two lifting bars 6 close to each other are fixedly installed with a plurality of second teeth 7, and the first teeth 5 are meshed with the second teeth 7. Through the meshing of the two teeth, the arc-shaped rotating piece 3 can rotate with the lifting and lowering of the lifting bar 6, and bushing holes 8 are opened on the two simulated swing arms 4 for inserting the bushing to be tested, and adapters 11 are fixedly installed on the tops of the two lifting bars 6. A gantry 12 is fixedly installed on the top of the carrying platform 2, and first driven shafts 13 are rotatably installed on both sides of the gantry 12. A loading disc 14 is fixedly installed on the ends of the two first driven shafts 13 close to each other, and an eccentric shaft 15 is fixedly installed on the sides of the two loading discs 14 close to each other. Linkage bars 16 are rotatably installed on the two eccentric shafts 15, and the bottoms of the two linkage bars 16 are respectively hinged to the two adapters 11. Through the rotation of the loading disc 14 and driven by the eccentric shaft 15, every time the loading disc 14 rotates one circle, the lifting bar 6 can achieve an ascending and descending movement cycle, so that the arc-shaped rotating piece 3 can reciprocate forward and reverse. The same rotation center unit is provided between the two arc-shaped rotating pieces 3, which can provide a rotation center for the two simulated swing arms 4, so that the simulated swing arms 4 can rotate with a fixed axis.A suspension frame 31 is provided above the rotating center unit, and the suspension frame 31 is fixedly connected to the bearing platform 2 through two suspension arms, and a second bidirectional lead screw 32 is rotatably installed in the suspension frame 31, and a second driving motor is fixedly installed on one side of the suspension frame 31, and its output shaft is fixedly connected to one end of the second bidirectional lead screw 32, and two frame connecting plates 33 are threadedly installed on the second bidirectional lead screw 32. In order to ensure that the frame connecting plates 33 have a linear motion tendency, two cross bars are fixed in the suspension frame 31, and the two cross bars penetrate the two frame connecting plates 33 and are slidably connected to the two. A connecting frame 34 is fixedly installed at the bottom of the two frame connecting plates 33, and a placing plate 35 is fixedly installed in the two connecting frames 34. Two main pressure columns 41 are provided in the two placing plates 35, and two auxiliary pressure columns 42 are provided in one of the placing plates 35. The two auxiliary pressure columns 42 are coaxial with and adapted to the two main pressure columns 41, and the main pressure The column 41, the auxiliary pressure column 42 and the bushing hole 8 are all of the same diameter as the bushing and are also coaxial, so that the bushing can be perfectly pushed into the bushing hole 8. In addition, a partition plate 36 is fixedly installed on the top of the two placement plates 35. The two main pressure columns 41 and the two auxiliary pressure columns 42 on the placement plate 35 are separated by the partition plate 36, that is, through the separation of the partition plate 36, the placement plate 35 has two slideways, each of which is provided with a main pressure column 41, and each slideway on one of the placement plates 35 has an auxiliary pressure column 42, which can ensure that the main pressure column 41 and the auxiliary pressure column 42 have a sliding limit so that they will not deviate, and the bushing can be perfectly guided into the bushing hole 8. A push unit is provided at the bottom of the two placement plates 35 to push the main pressure column 41 to move horizontally, so that the tested bushing in the bushing hole 8 can be ejected, and then the next bushing can be pushed into the bushing hole 8. ;

[0044] In the above method, in order to provide a fixed point for the arc-shaped rotating piece 3, two connecting plates 9 are fixedly installed at the bottom of the supporting platform 2, and arc-shaped supporting slide rods 10 are slidably installed on the two connecting plates 9. Among the two arc-shaped rotating pieces 3, a first connecting piece is fixedly installed on the inner ring wall of one of the arc-shaped rotating pieces 3, and a second connecting piece is fixedly installed on the outer ring wall of the other arc-shaped rotating piece 3. The bottom ends of the two arc-shaped supporting slide rods 10 are fixedly connected to the first connecting piece and the second connecting piece respectively, and the two arc-shaped supporting slide rods 10 are arranged at the same center of the arc-shaped rotating piece 3.

[0045] In this embodiment, in order to drive the two lifting bars 6 to lift and lower at the same time, a second driven shaft 17 is rotatably installed on the top of the gantry 12, and two bracket plates are fixedly installed on the top of the gantry 12. The same active transmission shaft 18 is rotatably installed on the two bracket plates. The two first driven shafts 13 and the two second driven shafts 17 are fixedly installed with first bevel teeth 19, and the corresponding two first bevel teeth 19 are meshed with each other. The active transmission shaft 18 and the two second driven shafts 17 are fixedly installed with second bevel teeth 20, and the corresponding two second bevel teeth 20 are meshed with each other. A first driving motor is fixedly installed on the top of the gantry 12, and circular gears are fixedly installed on its output shaft and the active transmission shaft 18, and the two circular gears are meshed with each other.

[0046] In the above-mentioned rotating center unit, it includes a rectangular frame sleeve 21 arranged between two folding support plates 1, and a hollow column 22 is slidably installed on the top of the rectangular frame sleeve 21, and the sliding relationship between the two is formed by a slide groove and a slide bar. Two slide grooves are provided at the top of the rectangular frame sleeve 21, and two slide bars are fixed on the outer ring wall of the hollow column 22, and the two slide bars are respectively located in the two slide grooves and contact with the inner wall of the slide groove, so that it can be ensured that the hollow column 22 can only be lifted and lowered in a straight line, and a lifting screw 23 is rotatably installed at the bottom of the rectangular frame sleeve 21, and the top end of the lifting screw 23 extends into the hollow column 22 and is threadedly connected to the bottom of the hollow column 22, and a third driving motor is fixedly installed at the bottom of the rectangular frame sleeve 21, and its output shaft is fixedly connected to the bottom end of the lifting screw 23, and a bearing seat 24 is fixedly installed on the top of the hollow column 22, and swing openings 25 are provided on both sides of the bearing seat 24, and the sides of the two simulated swing arms 4 close to each other extend to the two The hollow column 22 is provided with two first U-shaped frames 27, and the first bidirectional lead screws 28 are rotatably installed in the two first U-shaped frames 27. Two first transverse plates 29 are threadedly installed on the two first bidirectional lead screws 28. The two corresponding first transverse plates 29 are fixedly installed with a central axis 30 on the side close to each other. The four central axes 30 are coaxial with the corresponding bushing holes 8. The fourth drive motors are fixedly installed on the outer wall of one side of the two first U-shaped frames 27. The output shafts of the two fourth drive motors are respectively fixedly connected to one end of the two first bidirectional lead screws 28. In addition, in the rotating center unit, the rectangular frame sleeve 21 is fixedly connected to the two folding support plates 1 through two connecting beams 26. In addition, limit rods are fixed in the two first U-shaped frames 27, and the two limit rods pass through the corresponding first transverse plates 29 and are slidably connected thereto.

[0047] Any of the above-mentioned pushing units includes a second C-shaped frame 37, which is fixedly installed at the bottom of the placement plate 35, and a one-way screw 38 is rotatably installed in the second C-shaped frame 37. A fifth drive motor is fixedly installed on the outer wall of one side of the second C-shaped frame 37, and its output shaft is fixedly connected to one end of the one-way screw 38, and a second transverse plate 39 is threadedly installed on the one-way screw 38. Two pushing rods 40 are fixedly installed on the side of the second transverse plate 39 close to the placement plate 35, and the two pushing rods 40 are fixedly connected to the corresponding main pressure column 41.

[0048] In this embodiment

[0049] In the initial state, two bushings are placed on the placement plate 35 on which the auxiliary pressure column 42 is placed, and the two bushings are respectively located between the corresponding main pressure column 41 and the auxiliary pressure column 42;

[0050] When the bushing needs to be tested, first start the third drive motor in the positive direction, and its output shaft drives the lifting screw 23 to rotate. At this time, the hollow column 22 will bring the bearing seat 24 down, so that the simulated swing arm 4 moves out of the swing mouth 25. At this time, the simulated swing arm 4 is between the two placement plates 35. Then, start the second drive motor in the positive direction first, and its output shaft drives the second bidirectional lead screw 32 to rotate, and the two mounting plates 33 move toward each other until the two placement plates 35 respectively contact the two sides of the simulated swing arm 4. Then turn off the second drive motor, and then start the corresponding fifth drive motor in the positive direction, and the corresponding second transverse plate 39 will bring the corresponding The two corresponding main pressure columns 41 move horizontally, and then can move with the two bushings thereon. When the bushing contacts the auxiliary pressure column 42 during movement, it will push the auxiliary pressure column 42, so that the two auxiliary pressure columns 42 gradually approach the bushing hole 8, and finally make the two auxiliary pressure columns 42 pass through the corresponding bushing hole 8 and move to another placement plate 35. At the same time, with the continuous movement of the main pressure column 41, the two bushings are pushed into the corresponding bushing hole 8, and then the corresponding fifth drive motor is started in reverse to bring the corresponding main pressure column 41 back to the original position, and then the second bidirectional screw 32 is started in reverse to return the two placement plates 35 to their original positions.

[0051] Subsequently, the third driving motor is started in the reverse direction, and its output shaft drives the lifting screw 23 to rotate, so that the hollow column 22 and the bearing seat 24 are raised, and finally brought back to the original height position. At this time, the two simulated swing arms 4 are again in the corresponding swing openings 25. Then, the two fourth driving motors are started in the forward direction, and the output shafts of both of them drive the corresponding first bidirectional lead screws 28 to rotate, so that the corresponding two first transverse plates 29 move in a direction close to each other, and finally the four central shafts 30 pass through their respective corresponding insertion holes and enter into the corresponding inner holes of the bushings, so as to form a blocking position for the bushings, so that the bushings and the simulated swing arms 4 have a rotation axis;

[0052] Then, the first driving motor is started, and the active transmission shaft 18 can be driven to rotate through the meshing of the two circular gears. At the same time, under the meshing of the second bevel gear 20 and the first bevel gear 19, the two second driven shafts 17 and the two first driven shafts 13 start to rotate, and then can drive the two object-carrying discs 14 to rotate. At this time, with the rotation of the object-carrying disc 14, the lifting bar 6 will be reciprocatedly lifted and lowered under the linkage bar 16. In the process of the reciprocating lifting and lowering of the lifting bar 6, the meshing between the first teeth 5 and the second teeth 7 will drive the two arc-shaped rotating pieces 3 to reciprocate in forward and reverse rotation. In the reciprocating rotation of the arc-shaped rotating piece 3, the two simulated swing arms 4 will reciprocate in forward and reverse rotation on the central shaft 30, thereby simulating the action state of the bushing in actual use.

[0053] After the simulated swing arm 4 swings for a period of time, the test process ends, and then the two fourth drive motors are started in the reverse direction, and the corresponding two first transverse shifting plates 29 move in the direction away from each other, and finally bring the central shaft 30 out of the bushing, and also separate from the bearing seat 24, and then the third drive motor is started in the forward direction, and the hollow column 22 brings the bearing seat 24 down, and finally drops to the lowest position, at which time, the simulated swing arm 4 is again between the two placement plates 35;

[0054] At this time, two bushings to be tested can be placed on the placement plate 35 with the auxiliary pressure column 42 in the same manner as described above. Subsequently, the second drive motor is started in the positive direction, and its output shaft drives the second bidirectional lead screw 32 to rotate until the two placement plates 35 respectively contact the two sides of the simulated swing arm 4, and then the second drive motor is turned off. Then, in the same way as the above-mentioned operating principle, the corresponding fifth drive motor is started in the positive direction first, and the corresponding second transverse plate 39 moves horizontally with the corresponding two main pressure columns 41, so that the two bushings start to move. When the bushing contacts the auxiliary pressure column 42, it pushes the auxiliary pressure column 42 to move together. When the two auxiliary pressure columns 4 When the main pressure column 41 contacts the tested bushing in the bushing hole 8, the bushing will be gradually pushed out of the bushing hole 8 and pushed onto another placement plate 35. As the main pressure column 41 continues to move, the two auxiliary pressure columns 42 will also be pushed onto another placement plate 35. At the same time, the two prepared bushings to be tested are pushed into the corresponding bushing holes 8. Then, the corresponding fifth drive motor is started in reverse to bring the main pressure column 41, which has completed the bushing pressing, back to the original position. Then, the second bidirectional lead screw 32 is started in reverse to return the two placement plates 35 to their original positions, ready for the next use, and then the test work is continued.

[0055] Afterwards, the tested bushing pushed down from another placement plate 35 is taken out, and a new bushing is replaced, and this process is repeated repeatedly, thereby forming a continuous workflow for testing and replacing bushings.

[0056] Compared with the related art, the front control arm bushing durability test tool provided by the present invention has the following features:

[0057] Beneficial effects:

[0058] 1. The present invention can perform two simulation tests simultaneously in one test process by providing two arc-shaped rotating pieces 3, two simulation swing arms 4 and a rotating center unit capable of carrying the two simulation swing arms 4, thereby improving the test efficiency;

[0059] 2. The present invention arranges a main pressure column 41 and an auxiliary pressure column 42 on the placement plate 35, as well as two groups of pushing units for pushing the bushing to move. After the previous bushing test is completed, the auxiliary pressure column 42 is used to push it out, and then the main pressure column 41 is used to push the next bushing to be tested into the bushing hole 8 on the simulated swing arm 4, so that the bushing can be quickly replaced and quickly put into the next test work, which further improves the work efficiency of the test process and is more suitable for large-scale bushing production work.

[0060] Second embodiment:

[0061] Based on the front control arm bushing durability test fixture provided by the first embodiment of the present application, the second embodiment of the present application proposes another front control arm bushing durability test fixture. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0062] The second embodiment of the present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0063] Please refer to Figure 10-Figure 18 In the second embodiment of the front control arm bushing durability test tool proposed by the present invention: the suspended top frame is detachably connected to the bearing platform, the simulated swing arm 4 is separated from the arc-shaped rotating plate 3, and the number of the rotating center units is four groups, and the diameters of the interlaced holes and the center axis 30 are different between each group, and the diameters of the main pressure column 41 and the auxiliary pressure column 42 are also different between each group, so as to meet the test work of bushings of different specifications and models and improve the scope of application;

[0064] The same bottom bracket 43 is fixedly installed at the bottom of the two folding support plates 1. The top of the bottom bracket 43 is provided with a U-shaped avoidance groove, which can provide a rotation space for the transposition disc 46 mentioned below. A back plate 44 is fixedly installed on the top of the bottom bracket 43, on which a bearing shaft 45 is rotatably installed, and a transposition disc 46 is fixedly installed at one end of the bearing shaft 45. A fixing seat 54 is fixedly installed on the inner ring wall of the two arc-shaped rotating plates 3. The two fixing seats 54 are provided with dovetail grooves 55. Dovetail inserts 56 are inserted in the two dovetail grooves 55. The two dovetail inserts 56 are fixedly connected to the two simulated swing arms 4 on their respective sides close to each other. Positioning countersunk holes 57 are provided on the top and bottom of the two dovetail inserts 56. , directional rods 58 are fixedly installed on the top and bottom of the two fixed seats 54, and pull-connecting plates 59 are slidably installed on the four directional rods 58. Positioning rods 60 are slidably installed on the top and bottom of the two fixed seats 54, and the ends of the corresponding two positioning rods 60 that are far away from each other are fixedly connected to the corresponding pull-connecting plates 59, and the ends of the corresponding two positioning rods 60 that are close to each other extend into the corresponding positioning countersunk holes 57. Baffles are fixedly installed on the ends of the four directional rods 58, and second compression springs are sleeved on the four directional rods 58. The two ends of the second compression spring are fixedly connected to the baffle and the pull-connecting plate 59 respectively. Through the elastic top force of the second compression spring, the positioning rod 60 can be tightly inserted into the positioning countersunk hole 57.

[0065] In the above-mentioned manner, in order to provide a positioning effect for the transposition disc 46, a flat top plate 47 is fixedly installed on the top of the back plate 44, and a buckle slot 48 is opened on it. Four movable cavities 49 are opened on the outer ring wall of the transposition disc 46. A locking head 50 is slidably installed in each of the four movable cavities 49. The top of the locking head 50 located at the top extends into the buckle slot 48, thereby forming a locking position to prevent the transposition disc 46 from rotating naturally. Reset springs 51 are fixedly installed in each of the four movable cavities 49. The ends of the four reset springs 51 that are away from each other are They are all fixedly connected with the corresponding positioning heads 50, a slide 52 is fixedly installed on the top of the flat top plate 47, a tamping rod 53 is slidably installed on the slide 52, the tamping rod 53 is adapted to the positioning head 50, a pressing piece is fixedly installed on the top of the tamping rod 53, a first compression spring is sleeved on the tamping rod 53, the top of the first compression spring is fixedly connected to the pressing piece, and the bottom end of the first compression spring is fixedly connected to the top of the slide 52, by pressing the pressing piece downward, the positioning head 50 can be pushed out and buckled into the groove 48, so that the transposition disk 46 can be rotated to replace the rotating center unit.

[0066] In this embodiment

[0067] There are a large number of simulated swing arms 4, and the inner diameter of the bushing hole 8 of each simulated swing arm 4 is different. Moreover, when it is necessary to test bushings of different specifications, it is only necessary to remove the suspended top frame and replace it with a top-pushing unit of the corresponding model. The diameters of the main pressurizing column 41 and the auxiliary pressurizing column 42 in the top-pushing unit can meet the requirements of actual use.

[0068] In the initial state, the four hollow columns 22 are all retracted into the corresponding rectangular frame sleeves 21;

[0069] In later use, when it is necessary to test bushings of different specifications and models, in order to improve the universality of the present invention, the corresponding specification of the jacking unit can be replaced first, and then the corresponding two pull-connecting plates 59 are directly restrained and pulled away from each other, so that the corresponding two positioning rods 60 are moved out of the corresponding positioning countersunk holes 57. At this time, the corresponding two second clamping springs are in a compressed state, and the dovetail insert 56 on the simulated swing arm 4 is immediately pulled out, and then the dovetail insert 56 on the simulated swing arm 4 with the inner diameter of the bushing hole 8 that meets the requirements is inserted into the dovetail groove 55, and then the two pull-connecting plates 59 are loosened, and the compressed second clamping spring directly releases the elastic force, bringing the corresponding positioning rod 60 into the corresponding positioning countersunk hole 57, and then the other simulated swing arm 4 is replaced in the same way, thus completing the replacement of the two simulated swing arms 4;

[0070] Then, firstly, pressure is applied downward to the pressing sheet to make the tamping rod 53 descend. When it contacts the positioning head 50, it pushes the positioning head 50 downward, and finally ejects the positioning head 50 into the buckled groove 48. At this time, the first compression spring is in a compressed state. Then, the bearing shaft 45 is rotated. As the bearing shaft 45 rotates, the transposition disc 46 rotates with the four rotating center units. Whenever the positioning head 50 of one of the rotating center units contacts the flat top plate 47, it is automatically pressed into the corresponding active cavity 49. The corresponding return spring 51 is in a compressed state until it is separated from the flat top plate 47, and then the positioning head 50 is automatically ejected.

[0071] After the rotating center unit that meets the requirements rotates to the top, release the pressing piece, and the tamping rod 53 automatically rebounds to its original position. At the same time, the buckling groove 48 is opened, and the corresponding locking head 50 will automatically rebound into the buckling groove 48 under the rebound action of the corresponding first compression spring, thereby completing the adjustment of the rotating center unit, and then continue the test work.

[0072] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A front control arm bushing durability test fixture, comprising two folding support plates, characterized in that: The top of the two folding support plates is fixedly installed with a same bearing platform, and two arc-shaped rotating sheets are arranged below the bearing platform, and the inner ring walls of the two arc-shaped rotating sheets are provided with simulated swing arms, and the outer ring walls of the two arc-shaped rotating sheets are fixedly installed with a plurality of first teeth, and two lifting bars are slidably installed on the bearing platform, and the sides of the two lifting bars close to each other are fixedly installed with a plurality of second teeth, and the first teeth are meshed with the second teeth, and bushing holes are provided on the two simulated swing arms, and the tops of the two lifting bars are fixedly installed with adapters, and the top of the bearing platform is fixedly installed with a gantry, and the two sides of the gantry are rotatably installed with first driven shafts, and the ends of the two first driven shafts close to each other are fixedly installed with loading discs, and the sides of the two loading discs close to each other are fixedly installed with eccentric shafts, and linkage bars are rotatably installed on the two eccentric shafts, and the bottoms of the two linkage bars are respectively hinged with the two adapters, and the same rotation center unit is arranged between the two arc-shaped rotating sheets, which can provide a rotation center for the two simulated swing arms; A suspended frame is provided above the rotating center unit, and a second bidirectional screw is rotatably installed in the suspended frame. A second driving motor is fixedly installed on one side of the suspended frame, and an output shaft of the second driving motor is fixedly connected to one end of the second bidirectional screw. Two connecting plates are threadedly installed on the second bidirectional screw, and a connecting frame is fixedly installed at the bottom of the two connecting plates. A placing plate is fixedly installed in the two connecting frames, and two main pressure columns are provided in the two placing plates, and two auxiliary pressure columns are provided in one of the placing plates. The two auxiliary pressure columns are coaxial with the two main pressure columns and are adapted, and a pushing unit is provided at the bottom of the two placing plates for pushing the main pressure column to move horizontally, so as to eject the tested bushing in the bushing hole, and then push the next bushing into the bushing hole.

2. The front control arm bushing durability test tool according to claim 1, characterized in that: The two simulated swing arms are respectively fixedly connected to the inner ring walls of the two arc-shaped rotating plates, and the suspended top frame is fixedly connected to the bearing platform through two suspension arms.

3. The front control arm bushing durability test tool according to claim 1, characterized in that: Two connecting plates are fixedly installed on the bottom of the supporting platform, and arc-shaped supporting sliding rods are slidably installed on the two connecting plates. Among the two arc-shaped rotating plates, a first connecting plate is fixedly installed on the inner ring wall of one of the arc-shaped rotating plates, and a second connecting plate is fixedly installed on the outer ring wall of the other arc-shaped rotating plate. The bottom ends of the two arc-shaped supporting sliding rods are fixedly connected to the first connecting plate and the second connecting plate respectively.

4. The front control arm bushing durability test tool according to claim 1, characterized in that: A second driven shaft is rotatably installed on the top of the gantry, two bracket plates are fixedly installed on the top of the gantry, and the same active transmission shaft is rotatably installed on the two bracket plates. First bevel teeth are fixedly installed on the two first driven shafts and the two second driven shafts, and the corresponding two first bevel teeth are meshed with each other. Second bevel teeth are fixedly installed on the active transmission shaft and the two second driven shafts, and the corresponding two second bevel teeth are meshed with each other. A first driving motor is fixedly installed on the top of the gantry, and circular gears are fixedly installed on the output shaft of the first driving motor and the active transmission shaft, and the two circular gears are meshed with each other.

5. The front control arm bushing durability test tool according to claim 1, characterized in that: The rotating center unit includes a rectangular frame sleeve, which is arranged between two folding support plates, a hollow column is slidably installed on the top of the rectangular frame sleeve, a lifting screw is rotatably installed on the bottom of the rectangular frame sleeve, the top of the lifting screw extends into the hollow column and is threadedly connected to the bottom of the hollow column, a third drive motor is fixedly installed at the bottom of the rectangular frame sleeve, the output shaft of the third drive motor is fixedly connected to the bottom end of the lifting screw, a bearing seat is fixedly installed on the top of the hollow column, swing openings are opened on both sides of the bearing seat, and the sides of the two simulated swing arms close to each other extend into the two swing openings respectively. And the inner walls on both sides of the two swinging mouths are provided with through holes, and the through holes are coaxial with the bushing holes. Two first C-shaped frames are fixedly installed on the hollow column, and the first bidirectional screws are rotatably installed in the two first C-shaped frames. Two first transverse plates are threadedly installed on the two first bidirectional screws, and the corresponding two first transverse plates are fixedly installed with central axes on the sides close to each other. The four central axes are coaxial with the corresponding bushing holes. A fourth drive motor is fixedly installed on the outer wall of one side of the two first C-shaped frames, and the output shafts of the two fourth drive motors are respectively fixedly connected to one end of the two first bidirectional screws.

6. The front control arm bushing durability test tool according to claim 5, characterized in that: The rotating center unit is fixedly connected to the two folding support plates via two connecting beams.

7. The front control arm bushing durability test tool according to claim 1, characterized in that: Any one of the pushing units includes a second C-shaped frame, which is fixedly mounted on the bottom of the placement plate, a one-way screw is rotatably mounted in the second C-shaped frame, a fifth drive motor is fixedly mounted on an outer wall of one side of the second C-shaped frame, an output shaft of the fifth drive motor is fixedly connected to one end of the one-way screw, a second transverse plate is threadedly mounted on the one-way screw, two pushing rods are fixedly mounted on the side of the second transverse plate close to the placement plate, and the two pushing rods are fixedly connected to the corresponding main pressure columns.

8. The front control arm bushing durability test tool according to claim 1, characterized in that: A partition plate is fixedly installed on the top of the two placement plates, and the two main pressure columns and the two auxiliary pressure columns on the placement plates are separated by the partition plate.

9. The front control arm bushing durability test tool according to claim 5, characterized in that: The suspended top frame is detachably connected to the bearing platform, the simulated swing arm is separated from the arc-shaped rotating piece, there are four groups of rotating center units, and the through holes and center axis diameters opened between each group are different, the bottoms of the two folding support plates are fixedly installed with the same bottom support, the top of the bottom support is fixedly installed with a back plate, a bearing shaft is rotatably installed on the back plate, a transposition disk is fixedly installed on one end of the bearing shaft, the transposition disk passes through the bottom support and is movably connected to the bottom support, a fixing seat is fixedly installed on the inner ring wall of the two arc-shaped rotating pieces, both of the fixing seats are provided with dovetail grooves, both of the dovetail grooves are inserted with dovetail inserts, and the two dovetail inserts are The sides of the strips that are close to each other are fixedly connected with the two simulated swing arms respectively, the tops and bottoms of the two dovetail strips are provided with positioning countersunk holes, the tops and bottoms of the two fixing seats are fixedly installed with directional rods, and the four directional rods are slidably installed with pulling plates, and the tops and bottoms of the two fixing seats are slidably installed with positioning plugs, the ends of the corresponding two positioning plugs that are away from each other are fixedly connected with the corresponding pulling plates, and the ends of the corresponding two positioning plugs that are close to each other extend into the corresponding positioning countersunk holes, the ends of the four directional rods are fixedly installed with baffles, and the four directional rods are sleeved with second compression springs, and the two ends of the second compression springs are respectively fixedly connected with the baffles and the pulling plates.

10. The front control arm bushing durability test tool according to claim 9, characterized in that: A flat top plate is fixedly installed on the top of the back-connecting plate, and a buckling groove is provided on the flat top plate. Four movable cavities are provided on the outer ring wall of the transposition disc, and a locking head is slidably installed in the four movable cavities. The top of the locking head located at the top extends into the buckling groove, and a return spring is fixedly installed in the four movable cavities. The ends of the four return springs away from each other are fixedly connected to the corresponding locking heads. A slide is fixedly installed on the top of the flat top plate, and a tamping rod is slidably installed on the slide, and the tamping rod is adapted to the locking head. A pressing piece is fixedly installed on the top of the tamping rod, and a first compression spring is sleeved on the tamping rod, and the top of the first compression spring is fixedly connected to the pressing piece, and the bottom end of the first compression spring is fixedly connected to the top of the slide.

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