Front control arm bush durability test fixture

Abstract

The application provides a front control arm bushing durability test tool. It relates to the technical field of automobile accessory performance test. The front control arm bushing durability test tool comprises two folded support plates, a same bearing platform is fixedly installed on the top of the two folded support plates, two arc-shaped rotating pieces are arranged below the bearing platform, an imitation swing arm is arranged on the inner circle wall of each of the two arc-shaped rotating pieces, a plurality of first teeth are fixedly installed on the outer circle wall of each of the two arc-shaped rotating pieces, two lifting strips are slidingly installed on the bearing platform, a plurality of second teeth are fixedly installed on the side of each of the two lifting strips which is close to each other, the first teeth are engaged with the second teeth, a bushing hole is formed in each of the two imitation swing arms, and an adapter is fixedly installed on the top of each of the two lifting strips. The application has the advantages of significantly improved test efficiency and simple and quick bushing replacement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessory performance test, in particular to a front control arm bushing durability test tool. BACKGROUND

[0002] In automobile parts, the front control arm is one of the important parts in the whole automobile suspension system, and its main function is to transmit the force and torque between the wheel and the frame, and to buffer the impact caused by uneven road surface, reduce vibration and ensure smooth driving of the automobile. Generally, the front control arm is connected with the subframe at the bottom of the vehicle, and the connection between the two is generally formed by a bushing. The bushing is composed of two steel rings inside and outside, and a rubber middle part. Through the ductility of the rubber, the front control arm can swing while reducing the wear speed and degree of the connection part with the subframe, so as to ensure good driving performance of the vehicle on various road surfaces.

[0003] In the production process of the bushing, in order to obtain the durability of the bushing, durability test is generally carried out. A certain number of bushings in the same batch are selected as samples, and then they are placed in a special durability test tool for test. After the test is completed, the durability is determined by observing the degree of wear.

[0004] However, in the current test equipment, it is found that in the production process of a large number of bushings, a large number of bushings need to be tested, and each test process can only test one bushing. After each test is completed, the tested bushing needs to be removed by another pressure equipment, and then the next bushing is pressed into the bushing hole for the next test. The replacement of the bushing is complex, which leads to the fact that the test efficiency cannot be improved, and the operation in the test process is complicated.

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

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

[0007] In order to solve the above technical problems, the front control arm bushing durability test tool provided by the present application comprises two folded support plates, a same bearing platform is fixedly installed on the top of the two folded support plates, two arc-shaped rotating pieces are arranged below the bearing platform, a simulation swing arm is arranged on the inner wall of each of the two arc-shaped rotating pieces, a plurality of first teeth are fixedly installed on the outer wall of each of the two arc-shaped rotating pieces, two lifting bars are slidingly installed on the bearing platform, a plurality of second teeth are fixedly installed on the side of each of the two lifting bars which is close to each other, the first teeth are engaged with the second teeth, a bushing hole is formed in each of the two simulation swing arms, an adapter is fixedly installed on the top of each of the two lifting bars, a gantry is fixedly installed on the top of the bearing platform, a first driven shaft is rotatably installed on the side of the gantry, a load disc is fixedly installed on the end of each of the two first driven shafts which is close to each other, an eccentric shaft is fixedly installed on the side of each of the two load discs which is close to each other, a linkage bar is rotatably installed on each of the two eccentric shafts, the bottom of each of the two linkage bars is hingedly connected with the adapter, a same rotating center unit is arranged between the two arc-shaped rotating pieces, and the rotating center unit can provide a rotating center for the two simulation swing arms.

[0008] A suspension frame is arranged above the rotating center unit, a second bidirectional screw is rotatably installed in the suspension frame, a second driving motor is fixedly installed on the side of the suspension frame, the output shaft of the second driving motor is fixedly connected with one end of the second bidirectional screw, two frame connecting plates are threadedly installed on the second bidirectional screw, a connecting frame is fixedly installed on the bottom of each of the two frame connecting plates, a placing plate is fixedly installed in each of the two connecting frames, two main pressing columns are arranged in each of the two placing plates, two auxiliary pressing columns are arranged in one of the two placing plates, the two auxiliary pressing columns are coaxial with and matched with the two main pressing columns, respectively, a pushing unit is arranged on the bottom of each of the two placing plates, the pushing unit is used for pushing the main pressing column to move horizontally, the bushing which has been tested in the bushing hole can be pushed out, and the next bushing can be pushed into the bushing hole.

[0009] Preferably, each of the two simulation swing arms is fixedly connected with the inner wall of each of the two arc-shaped rotating pieces, and the suspension frame is fixedly connected with the bearing platform through two suspension arms.

[0010] Preferably, a first connecting piece is fixedly installed on the inner wall of one of the two arc-shaped rotating pieces, a second connecting piece is fixedly installed on the outer wall of the other arc-shaped rotating piece, and the bottom end of each of the two arc-shaped support slides is fixedly connected with the first connecting piece and the second connecting piece, respectively.

[0011] Preferably, the top of the gantry is rotatably provided with a second driven shaft, the top of the gantry is fixedly provided with two support plates, the same driving shaft is rotatably provided on the two support plates, the first bevel gears are fixedly provided on the driving shaft and the two second driven shafts, the corresponding two first bevel gears are engaged, the second bevel gears are fixedly provided on the driving shaft and the two second driven shafts, the corresponding two second bevel gears are engaged, the first driving motor is fixedly provided on the top of the gantry, and the output shaft of the first driving motor and the driving shaft are fixedly provided with the circular gears, and the two circular gears are engaged.

[0012] Preferably, the rotating center unit comprises a rectangular frame sleeve, the rectangular frame sleeve is arranged between the two fold-shaped support plates, the hollow stand is slidably arranged on the top of the rectangular frame sleeve, the lifting screw is rotatably arranged on the bottom of the rectangular frame sleeve, the top end of the lifting screw extends into the hollow stand and is threadedly connected with the bottom of the hollow stand, the third driving motor is fixedly arranged on the bottom of the rectangular frame sleeve, the output shaft of the third driving motor is fixedly connected with the bottom end of the lifting screw, the bearing seat is fixedly arranged on the top of the hollow stand, the swing openings are formed in the two sides of the bearing seat, the two sides of the two simulation swing arms that are close to each other extend into the two swing openings respectively, the through holes are formed in the inner walls of the two sides of the swing openings, the through holes are coaxial with the bushing holes, the two first U-shaped frames are fixedly arranged on the hollow stand, the first bidirectional lead screws are rotatably arranged in the two first U-shaped frames, the two first transverse plates are threadedly arranged on the two first bidirectional lead screws, the center shafts are fixedly arranged on the sides of the corresponding two first transverse plates that are close to each other, the four center shafts are coaxial with the corresponding bushing holes, the fourth driving motors are fixedly arranged on the one side outer walls of the two first U-shaped frames, and the output shafts of the two fourth driving motors are fixedly connected with the one ends of the two first bidirectional lead screws.

[0013] Preferably, the rotating center unit is fixedly connected with the two fold-shaped support plates through the two connecting beams.

[0014] Preferably, the pushing unit comprises a second U-shaped frame, the second U-shaped frame is fixedly arranged on the bottom of the placing plate, the unidirectional lead screw is rotatably arranged in the second U-shaped frame, the fifth driving motor is fixedly arranged on the one side outer wall of the second U-shaped frame, the output shaft of the fifth driving motor is fixedly connected with the one end of the unidirectional lead screw, the second transverse plate is threadedly arranged on the unidirectional lead screw, the two pushing rods are fixedly arranged on the side of the second transverse plate that is close to the placing plate, and the two pushing rods are fixedly connected with the corresponding main pressure columns.

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

[0016] Preferably, the suspension roof frame is detachably connected with the bearing platform, the simulation swing arm is separated from the arc-shaped rotating piece, the number of the rotating center units is four groups, the penetrating holes and the center shafts of different groups are different in diameter, the bottom of the two folding support plates is fixedly provided with a same bottom supporting bracket, the top of the bottom supporting bracket is fixedly provided with a back connecting plate, the back connecting plate is rotatably provided with a bearing shaft, one end of the bearing shaft is fixedly provided with a transposition disc, the transposition disc penetrates through the bottom supporting bracket and is movably connected with the bottom supporting bracket, the inner wall of the inner ring of the two arc-shaped rotating pieces is fixedly provided with a fixed seat, the two fixed seats are provided with a dovetail groove, the two dovetail grooves are inserted with a dovetail plug, the two dovetail plugs are fixedly connected with the two simulation swing arms on the side close to each other, the top and the bottom of the two dovetail plugs are provided with a positioning counterbore, the top and the bottom of the two fixed seats are fixedly provided with a directional rod, the four directional rods are slidably provided with a pull plate, the top and the bottom of the two fixed seats are slidably provided with a positioning plug rod, the ends of the two positioning plug rods away from each other are fixedly connected with the corresponding pull plates, the ends of the two positioning plug rods close to each other are extended into the corresponding positioning counterbores, the end of the four directional rods is fixedly provided with a baffle, the four directional rods are sleeved with a second compression spring, and the two ends of the second compression spring are fixedly connected with the baffle and the pull plate.

[0017] Preferably, the top of the back connecting plate is fixedly provided with a flat top plate, the flat top plate is provided with a buckling groove, the outer wall of the outer ring of the transposition disc is provided with four movable cavities, the four movable cavities are slidably provided with a clamping head, the top of the clamping head on the top is extended into the buckling groove, the four movable cavities are fixedly provided with a reset spring, the ends of the four reset springs away from each other are fixedly connected with the corresponding clamping heads, the top of the flat top plate is fixedly provided with a sliding frame, the sliding frame is slidably provided with a tamping rod, the tamping rod is matched with the clamping head, the top end of the tamping rod is fixedly provided with a pressing piece, the tamping rod is sleeved with a first compression spring, the top end of the first compression spring is fixedly connected with the pressing piece, and the bottom end of the first compression spring is fixedly connected with the top of the sliding frame.

[0018] Compared with the related art, the front control arm bush durability test tool has the following advantages

[0019] Beneficial effects:

[0020] One, the present application can carry out simulation test work on two at the same time in a test process through the setting of two arc-shaped rotating pieces, two simulation swing arms and the rotating center machine group capable of bearing two simulation swing arms, so as to improve the test efficiency;

[0021] Two, the present application can quickly form the replacement of the bushing and quickly put into the next test work after the previous bushing test is completed through the setting of the main pressure column and the auxiliary pressure column on the placing plate and the two groups of pushing machine groups for pushing the bushing to move, so as to further improve the work efficiency of the test process, and be more suitable for large quantities of bushing production work. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The front control arm bushing durability test tool first embodiment provided by the present application is shown in the main view;

[0023] Figure 2 The front control arm bushing durability test tool first embodiment provided by the present application is shown in the oblique view;

[0024] Figure 3 The assembly diagram of the arc-shaped rotating piece and the lifting bar in the front control arm bushing durability test tool first embodiment provided by the present application is shown;

[0025] Figure 4 The assembly diagram of the rotating center machine group and the pushing machine group in the front control arm bushing durability test tool first embodiment provided by the present application is shown;

[0026] Figure 5 The partial cross-sectional structure diagram of the rectangular frame sleeve and the hollow stand column in the front control arm bushing durability test tool first embodiment provided by the present application is shown;

[0027] Figure 6 The bottom view structure diagram of the rotating center machine group and the pushing machine group in the front control arm bushing durability test tool first embodiment provided by the present application is shown;

[0028] Figure 7 The connection structure diagram of the hollow stand column and the first U-shaped frame in the front control arm bushing durability test tool first embodiment provided by the present application is shown;

[0029] Figure 8 The assembly diagram of the main pressure column and the auxiliary pressure column in the front control arm bushing durability test tool first embodiment provided by the present application is shown;

[0030] Figure 9Internal structure schematic view of the suspension roof frame in the first embodiment of the front control arm bushing durability test tool provided by the present application;

[0031] Figure 10 Front view schematic view of the second embodiment of the front control arm bushing durability test tool provided by the present application;

[0032] Figure 11 Rear side structure schematic view of the second embodiment of the front control arm bushing durability test tool provided by the present application;

[0033] Figure 12 Assembly schematic view of the simulated swing arm and the fixed seat in the second embodiment of the front control arm bushing durability test tool provided by the present application;

[0034] Figure 13 Assembly schematic view of the bottom support bracket and the transposition disc in the second embodiment of the front control arm bushing durability test tool provided by the present application;

[0035] Figure 14 Connection structure schematic view of the bottom support bracket and the back contact plate in the second embodiment of the front control arm bushing durability test tool provided by the present application;

[0036] Figure 15 Sectional view structure schematic view of the transposition disc in the second embodiment of the front control arm bushing durability test tool provided by the present application;

[0037] Figure 16 For Figure 15 The enlarged structure schematic view of A part shown in the figure;

[0038] Figure 17 Split state schematic view of the dovetail groove and the dovetail plug in the second embodiment of the front control arm bushing durability test tool provided by the present application;

[0039] Figure 18 Connection structure schematic view of the suspension roof frame in the second embodiment of the front control arm bushing durability test tool provided by the present application.

[0040] The reference signs in the figure: 1, folding support plate; 2, bearing platform; 3, arc-shaped rotating piece; 4, simulation 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, object carrying disc; 15, eccentric shaft; 16, linkage bar; 17, second driven shaft; 18, driving shaft; 19, first bevel gear; 20, second bevel gear; 21, rectangular frame sleeve; 22, hollow stand column; 23, lifting screw; 24, bearing seat; 25, swing opening; 26, connecting beam; 27, first U-shaped frame; 28, first bidirectional screw; 29, first horizontal moving piece; 30, central shaft; 31, suspended roof frame; 32, second bidirectional screw; 33, frame connecting plate; 34, connecting frame; 35, placing plate; 36, partition plate; 37, second U-shaped frame; 38, one-way screw; 39, second horizontal moving piece; 40, push rod; 41, main pressing column; 42, auxiliary pressing column; 43, bottom support; 44, back connecting plate; 45, bearing shaft; 46, transposition disc; 47, flat top plate; 48, buckling groove; 49, movable cavity; 50, clamping head; 51, return spring; 52, slide; 53, tamping rod; 54, fixed seat; 55, dovetail groove; 56, dovetail insert; 57, positioning counterbore; 58, directional rod; 59, pull connecting plate; 60, positioning insert rod. DETAILED DESCRIPTION

[0041] The application will be further described below in conjunction with the drawings and embodiments.

[0042] First embodiment:

[0043] Please refer to Figures 1-9In the first embodiment of the present application, the front control arm bushing durability test tool comprises two folded support plates 1, and a same bearing platform 2 is fixedly installed on the top of the two folded support plates 1, the bearing platform 2 is provided with two arc-shaped rotating pieces 3 below, the inner wall of the two arc-shaped rotating pieces 3 is fixedly installed with a simulation swing arm 4, the outer wall of the two arc-shaped rotating pieces 3 is fixedly installed with a plurality of first teeth 5, the bearing platform 2 is slidably installed with two lifting strips 6, the side close to each other of the two lifting strips 6 is fixedly installed with a plurality of second teeth 7, the first teeth 5 and the second teeth 7 are engaged, the arc-shaped rotating piece 3 can rotate with the lifting strip 6 through the engagement of the two kinds of teeth, the bushing hole 8 is formed on the two simulation swing arms 4 for inserting the bushing to be tested, the top of the two lifting strips 6 is fixedly installed with an adapter 11, the top of the bearing platform 2 is fixedly installed with a gantry 12, the two sides of the gantry 12 are rotatably installed with a first driven shaft 13, the end close to each other of the two first driven shafts 13 is fixedly installed with a load disc 14, the side close to each other of the two load discs 14 is fixedly installed with an eccentric shaft 15, the two eccentric shafts 15 are rotatably installed with a linkage strip 16, the bottom of the two linkage strips 16 is respectively hinged with the two adapters 11, through the rotation of the load disc 14 and the driving of the eccentric shaft 15, the lifting strip 6 can realize a rising and falling movement cycle every time the load disc 14 rotates one circle, so that the arc-shaped rotating piece 3 can reciprocatingly rotate forward and reverse, a same rotating center unit is arranged between the two arc-shaped rotating pieces 3, which can provide a rotating center for the two simulation swing arms 4, so that the simulation swing arm 4 can rotate around a fixed shaft.And the rotating center unit is provided with a suspended roof frame 31 above the bearing platform 2, the suspended roof frame 31 is fixedly connected with the bearing platform 2 through two suspension arms, a second bidirectional screw rod 32 is rotatably installed in the suspended roof frame 31, a second driving motor is fixedly installed on one side of the suspended roof frame 31, the output shaft of the second driving motor is fixedly connected with one end of the second bidirectional screw rod 32, two frame connecting plates 33 are threadedly installed on the second bidirectional screw rod 32, in order to ensure that the frame connecting plates 33 have a linear motion trend, two cross bars are fixedly installed in the suspended roof frame 31, the two cross bars penetrate through the two frame connecting plates 33 and are slidably connected with the two frame connecting plates 33, a connecting frame 34 is fixedly installed at the bottom of each of the two frame connecting plates 33, a placing plate 35 is fixedly installed in each of the two connecting frames 34, two main pressing columns 41 are arranged in each of the two placing plates 35, two auxiliary pressing columns 42 are arranged in one of the two placing plates 35, the two auxiliary pressing columns 42 are coaxial with the two main pressing columns 41 and are adapted to the two main pressing columns 41, the main pressing column 41, the auxiliary pressing column 42 and the bushing hole 8 have the same diameter as the bushing, and are coaxial, so that the bushing can be perfectly pushed into the bushing hole 8, a partition plate 36 is fixedly installed at the top of each of the two placing plates 35, the two main pressing columns 41 and the two auxiliary pressing columns 42 on the placing plate 35 are separated by the partition plate 36, that is, the placing plate 35 has two slides due to the separation of the partition plate 36, one main pressing column 41 is arranged in each of the slides, and one auxiliary pressing column 42 is arranged in each of the slides on one of the placing plates 35, so as to ensure that the main pressing column 41 and the auxiliary pressing column 42 have a sliding limit, so that they will not deviate, and the bushing can be perfectly guided into the bushing hole 8, and a pushing unit is arranged at the bottom of each of the two placing plates 35, which is used to push the main pressing column 41 to move horizontally, so as to push the bushing out of the bushing hole 8 after the test is completed, and then push the next bushing into the bushing hole 8.

[0044] In the above manner, 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 bearing platform 2, an arc-shaped support slide 10 is slidably installed on each of the two connecting plates 9, a first connecting piece is fixedly installed on the inner circumferential wall of one of the two arc-shaped rotating pieces 3, a second connecting piece is fixedly installed on the outer circumferential wall of the other arc-shaped rotating piece 3, the bottom ends of the two arc-shaped support slides 10 are fixedly connected with the first connecting piece and the second connecting piece respectively, and the two arc-shaped support slides 10 are arranged at the same center as the arc-shaped rotating piece 3.

[0045] In the mode, in order to drive two lifting bars 6 to lift simultaneously, a second driven shaft 17 is rotatably installed on the top of the portal frame 12, and two support plates are fixedly installed on the top of the portal frame 12, and a same driving transmission shaft 18 is rotatably installed on the two support plates, and a first bevel gear 19 is fixedly installed on each of the two first driven shafts 13 and the two second driven shafts 17, and the corresponding two first bevel gears 19 are engaged with each other, and a second bevel gear 20 is fixedly installed on the driving transmission shaft 18 and the two second driven shafts 17, and the corresponding two second bevel gears 20 are engaged with each other, and a first driving motor is fixedly installed on the top of the portal frame 12, and a round gear is fixedly installed on the output shaft of the first driving motor and the driving transmission shaft 18, and the two round gears are engaged with each other.

[0046] And in the above-mentioned rotating center unit, a rectangular frame sleeve 21 is arranged between the two fold-shaped support plates 1, a hollow column 22 is slidably installed on the top of the rectangular frame sleeve 21, the sliding relationship between the two is formed by a sliding groove and a sliding strip, two sliding grooves are formed on the top of the rectangular frame sleeve 21, and two sliding strips are fixedly installed on the outer wall of the hollow column 22, the two sliding strips are respectively located in the two sliding grooves and in contact with the inner walls of the sliding grooves, so that the hollow column 22 can only be linearly lifted, a lifting screw 23 is rotatably installed on the bottom of the rectangular frame sleeve 21, the top end of the lifting screw 23 extends into the hollow column 22 and is threadedly connected with the bottom of the hollow column 22, a third driving motor is fixedly installed on the bottom of the rectangular frame sleeve 21, the output shaft of the third driving motor is fixedly connected with the bottom end of the lifting screw 23, a bearing seat 24 is fixedly installed on the top of the hollow column 22, swing openings 25 are formed on the two sides of the bearing seat 24, two sides of the two simulated swing arms 4 respectively extend into the two swing openings 25, and through holes are formed on the inner walls of the two sides of the two swing openings 25, the through holes are coaxial with the bushing holes 8, two first U-shaped frames 27 are fixedly installed on the hollow column 22, first bidirectional screws 28 are rotatably installed in the two first U-shaped frames 27, two first transverse pieces 29 are threadedly installed on the two first bidirectional screws 28, center shafts 30 are fixedly installed on the sides of the corresponding two first transverse pieces 29, the four center shafts 30 are coaxial with the corresponding bushing holes 8, fourth driving motors are fixedly installed on the sides of the two first U-shaped frames 27, the output shafts of the two fourth driving motors are fixedly connected with one ends of the two first bidirectional screws 28, and in the rotating center unit, the rectangular frame sleeve 21 is fixedly connected with the two fold-shaped support plates 1 through the two connecting beams 26, and limit rods are further fixedly installed in the two first U-shaped frames 27, the two limit rods penetrate through the corresponding first transverse pieces 29 and are slidably connected with the first transverse pieces 29.

[0047] The second U-shaped frame 37 is fixedly installed at the bottom of the placing plate 35, and the one-way lead screw 38 is rotatably installed in the second U-shaped frame 37. The fifth driving motor is fixedly installed on the outer wall of one side of the second U-shaped frame 37, and the output shaft of the fifth driving motor is fixedly connected with one end of the one-way lead screw 38. The second transverse moving plate 39 is threadedly installed on the one-way lead screw 38. The two pushing rods 40 are fixedly installed on the side of the second transverse moving plate 39 close to the placing plate 35, and the two pushing rods 40 are fixedly connected with the corresponding main pressure columns 41.

[0048] In the embodiment

[0049] In the initial state, two bushings are placed on the placing 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 bushings need to be tested, the third driving motor is started in the forward direction, and the output shaft of the third driving motor drives the lifting screw 23 to rotate. At this time, the hollow column 22 drives the bearing seat 24 to descend, so that the simulation swing arm 4 is moved out of the swing opening 25. At this time, the simulation swing arm 4 is located between the two placing plates 35. Then, the second driving motor is started in the forward direction, and the output shaft of the second driving motor drives the second bidirectional lead screw 32 to rotate. The two frame connecting plates 33 move towards each other until the two placing plates 35 respectively contact the two sides of the simulation swing arm 4. Then, the second driving motor is turned off. Immediately, the corresponding fifth driving motor is started in the forward direction. The corresponding second transverse moving plate 39 drives the corresponding two main pressure columns 41 to move horizontally, so that the two main pressure columns 41 and the two bushings move. When the bushings contact the auxiliary pressure column 42 during the movement, the auxiliary pressure column 42 is pushed, so that the two auxiliary pressure columns 42 gradually approach the bushing hole 8. Finally, the two auxiliary pressure columns 42 pass through the corresponding bushing hole 8 and move to the other placing 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. Then, the corresponding fifth driving motor is started in the reverse direction to drive the corresponding main pressure column 41 back to the original position. Then, the second bidirectional lead screw 32 is started in the reverse direction to return the two placing plates 35 to the original position.

[0051] Subsequently, the third drive motor is started in reverse, the output shaft of which drives the lifting screw 23 to rotate, thereby lifting the hollow column 22 with the carrier seat 24, and finally bringing it back to the original height position, at which time the two simulated swing arms 4 are again in the corresponding swing openings 25. Then, the fourth drive motors are started in forward direction, the output shafts of which both drive the corresponding first bidirectional screw 28 to rotate, so that the corresponding two first horizontal moving pieces 29 move towards each other, and finally the four center shafts 30 all pass through the corresponding insertion holes and enter the corresponding bush inner holes, thereby clamping the bush and making the bush and the simulated swing arm 4 have a rotation axis;

[0052] Then, the first drive motor is started, which drives the driving shaft 18 to rotate through the engagement of the two circular gears, and at the same time, the two second driven shafts 17 and the two first driven shafts 13 start to rotate under the sequential engagement of the second bevel gear 20 and the first bevel gear 19, thereby driving the two carrier discs 14 to rotate. At this time, with the rotation of the carrier disc 14, the lifting bar 6 will reciprocate under the linkage of the linkage bar 16. During the reciprocating process of the lifting bar 6, the two arc-shaped rotating pieces 3 will reciprocate under the engagement of the first tooth 5 and the second tooth 7. During the reciprocating process of the arc-shaped rotating piece 3, the two simulated swing arms 4 will reciprocate on the center shaft 30, thereby simulating the action state of the bush in actual use;

[0053] Until the simulated swing arm 4 swings for a period of time, the test process is completed, and then the fourth drive motors are started in reverse, the corresponding two first horizontal moving pieces 29 move away from each other, and finally the center shaft 30 is brought out of the bush, and at the same time, it is separated from the carrier seat 24. Immediately, the third drive motor is started in forward direction, the hollow column 22 drives the carrier seat 24 to descend, and finally to the lowest position. At this time, the simulated swing arm 4 is between the two placing plates 35.

[0054] At this time, two bushings to be tested can be placed on the placement plate 35 with the auxiliary pressing column 42 in the same way as described above, then the second drive motor is started in the forward direction, the output shaft drives the second bidirectional screw 32 to rotate until the two placement plates 35 respectively contact the two sides of the simulated swing arm 4, the second drive motor is turned off, then the corresponding fifth drive motor is started in the forward direction, the corresponding second horizontal moving piece 39 moves horizontally with the corresponding two main pressing columns 41, so that the two bushings start to move, when the bushings contact the auxiliary pressing column 42, the auxiliary pressing column 42 is pushed to move together, when the two auxiliary pressing columns 42 contact the bushings in the bushing hole 8 that have been tested, the bushings are gradually pushed out of the bushing hole 8 and pushed onto the other placement plate 35, and with the continuous movement of the main pressing column 41, the two auxiliary pressing columns 42 are also pushed onto the other placement plate 35, at the same time, the two bushings to be tested are pushed into the corresponding bushing hole 8, then the corresponding fifth drive motor is started in the reverse direction to bring the main pressing column 41 that has completed the bushing pressing back to the original position, then the second bidirectional screw 32 is started in the reverse direction to return the two placement plates 35 to the original position for the next use, and then the test work continues.

[0055] Then, the tested bushing pushed down from the other placement plate 35 is taken out, and a new bushing is placed on it, and so on, so as to form a continuous test and replacement work flow.

[0056] Compared with the related art, the front control arm bushing durability test tool has the following advantages

[0057] Beneficial effects:

[0058] Firstly, the two arc-shaped rotating pieces 3, the two simulated swing arms 4 and the rotating center unit capable of bearing the two simulated swing arms 4 are arranged, so that two simulated test work can be performed at the same time in one test process, thereby improving the test efficiency.

[0059] Secondly, the main pressing column 41 and the auxiliary pressing column 42 are arranged on the placement plate 35, and the two groups of pushing units are arranged to push the bushing to move, so that after the previous bushing test is completed, the auxiliary pressing column 42 is used to push it out, and then the main pressing column 41 is used to push the next bushing to be tested into the bushing hole 8 on the simulated swing arm 4, thereby quickly replacing the bushing and quickly entering the next test work, further improving the work efficiency in the test process, and being more suitable for large-scale bushing production work.

[0060] Second embodiment:

[0061] The second embodiment of the front control arm bushing durability test device provided in the present application is another front control arm bushing durability test device. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the separate implementation of the first embodiment.

[0062] The second embodiment of the present application will be further described below in combination with the drawings and embodiments.

[0063] Please refer to Figures 10-18 In the second embodiment of the front control arm bushing durability test device provided in the present application, the suspension roof frame is detachably connected with the bearing platform, the simulated swing arm 4 is separated from the arc-shaped rotating piece 3, and there are four groups of rotating center units, the diameters of the through holes and the center shaft 30 are different between each group, and the diameters of the main pressing column 41 and the auxiliary pressing column 42 are also different between each group, so as to meet the test work of bushings of different specifications and types and improve the application range.

[0064] The bottom of the two fold-shaped support plates 1 is fixedly installed with the same bottom support 43, the top of the bottom support 43 is provided with a U-shaped avoiding slot, which can provide a rotating space for the transposition disc 46 mentioned below, the top of the bottom support 43 is fixedly installed with a back contact plate 44, the bearing shaft 45 is rotatably installed on the back contact plate 44, one end of the bearing shaft 45 is fixedly installed with the transposition disc 46, the inner circle wall of each of the two arc-shaped rotating pieces 3 is fixedly installed with a fixed seat 54, the two fixed seats 54 are each provided with a dovetail groove 55, the two dovetail grooves 55 are each inserted with a dovetail plug 56, the two dovetail plugs 56 are each fixedly connected with the two simulated swing arms 4 on the side close to each other, the top and the bottom of each of the two dovetail plugs 56 are each provided with a positioning counterbore 57, the top and the bottom of each of the two fixed seats 54 are each fixedly installed with a directional rod 58, the four directional rods 58 are each slidably installed with a pull plate 59, the top and the bottom of each of the two fixed seats 54 are each slidably installed with a positioning plug rod 60, the ends of the two positioning plug rods 60 away from each other are each fixedly connected with the corresponding pull plate 59, the ends of the two positioning plug rods 60 close to each other are each extended into the corresponding positioning counterbore 57, the ends of the four directional rods 58 are each fixedly installed with a baffle, the four directional rods 58 are each sleeved with a second compression spring, the two ends of the second compression spring are respectively fixedly connected with the baffle and the pull plate 59, and the positioning plug rod 60 can be tightly inserted into the positioning counterbore 57 through the elastic top force of the second compression spring.

[0065] In the above manner, in order to provide positioning effect for the transposition disc 46, a flat top plate 47 is fixedly installed on the top of the back interface plate 44, a buckling groove 48 is formed on the flat top plate 47, four movable cavities 49 are formed on the outer wall of the transposition disc 46, four clamping heads 50 are slidably installed in the four movable cavities 49, the top of the upper clamping head 50 extends into the buckling groove 48, thereby forming a clamping position to prevent the transposition disc 46 from rotating naturally, four return springs 51 are fixedly installed in the four movable cavities 49, the ends of the four return springs 51 away from each other are fixedly connected with the corresponding clamping heads 50, a sliding frame 52 is fixedly installed on the top of the flat top plate 47, a tamping rod 53 is slidably installed on the sliding frame 52, the tamping rod 53 is matched with the clamping head 50, a pressing piece is fixedly installed on the top end of the tamping rod 53, a first compression spring is sleeved on the tamping rod 53, the top end of the first compression spring is fixedly connected with the pressing piece, and the bottom end of the first compression spring is fixedly connected with the top of the sliding frame 52. By pressing the pressing piece, the clamping head 50 can be pushed out of the buckling groove 48, so that the transposition disc 46 can be rotated to exchange the rotating center unit.

[0066] In the present embodiment

[0067] The number of simulation swing arms 4 is large, and the inner diameters of the bushing holes 8 of each simulation swing arm 4 are different. When different specifications of bushings need to be tested, the suspension top frame is only needed to be disassembled and replaced with a corresponding top pushing unit. The diameters of the main pressing column 41 and the auxiliary pressing column 42 of 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 the later use, when different specifications of bushings need to be tested, in order to improve the universality of the present application, the corresponding top pushing unit can be replaced first, then the corresponding two pull plates 59 are directly restrained, and are pulled away from each other, so that the corresponding two positioning rods 60 are moved out of the corresponding positioning counterbores 57. At this time, the two second compression springs are in a compressed state. Then, the dovetail insertion strips 56 on the simulation swing arms 4 are pulled out, the dovetail insertion strips 56 on the simulation swing arms 4 with the required inner diameter of the bushing hole 8 are inserted into the dovetail grooves 55, then the two pull plates 59 are loosened, the compressed second compression springs directly release the elastic force, and the corresponding positioning rods 60 are brought into the corresponding positioning counterbores 57. Then, the other simulation swing arm 4 is replaced in the same way. In this way, the replacement of the two simulation swing arms 4 is completed.

[0070] Subsequently, first to the press piece to apply pressure, so that the ram 53 down, when it contacts the detent head 50, push the detent head 50 down, eventually the detent head 50 out of the buckle into the slot 48, the first compression spring at this time is in a compressed state, then rotate the carrier shaft 45, with the rotation of the carrier shaft 45, the change disk 46 with four rotating center machine group rotation, and whenever one of the rotating center machine group of detent head 50 contact to the flat plate 47, will automatically be pressed into the corresponding movable cavity 49, the corresponding reset spring 51 is in a compressed state, until separated from the flat plate 47, will automatically pop out the detent head 50;

[0071] And until the rotating center machine group meets the requirements of the rotation to the top, release the press piece, the ram 53 automatically rebound to the original position, at the same time, the buckle into the slot 48 is opened, the corresponding detent head 50 will be automatically pop to the buckle into the slot 48 under the corresponding first compression spring rebound, thereby completing the rotating center machine group adjustment, then continue to carry on the test work can.

[0072] The above described only for the embodiment of the present application, not therefore limit the patent range of the present application, any equivalent structure or equivalent flow transformation, or directly or indirectly applied in other related technical fields, using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

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 mounted with a same bearing platform, and two arc-shaped rotating pieces are provided below the bearing platform, and the inner ring walls of the two arc-shaped rotating pieces are provided with simulated swing arms, and the outer ring walls of the two arc-shaped rotating pieces are fixedly mounted with a plurality of first teeth, and two lifting bars are slidably mounted on the bearing platform, and a plurality of second teeth are fixedly mounted on the sides of the two lifting bars close to each other, and the first teeth are meshed with the second teeth, and bushing holes are provided on the two simulated swing arms, and adapters are fixedly mounted on the top of the two lifting bars, and a gantry is fixedly mounted on the top of the bearing platform, and first driven shafts are rotatably mounted on both sides of the gantry, and loading discs are fixedly mounted on the ends of the two first driven shafts close to each other, and eccentric shafts are fixedly mounted on the sides of the two loading discs close to each other, and linkage bars are rotatably mounted on the two eccentric shafts, and the bottoms of the two linkage bars are hinged to the two adapters respectively, and a same rotation center unit is provided between the two arc-shaped rotating pieces, which can provide a rotation center for the two simulated swing arms; A suspended top frame is provided above the rotating center unit, and a second bidirectional screw is rotatably installed in the suspended top frame. A second driving motor is fixedly installed on one side of the suspended top 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 on 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 and adapted to the two main pressure columns respectively, 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 fixture according to claim 1, characterized in that: The two simulated swing arms are fixedly connected to the inner ring walls of the two arc-shaped rotating pieces respectively, 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 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 arc-shaped rotating plate, 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.

4. The front control arm bushing durability test tool according to claim 1, characterized in that: A second driven shaft is rotatably mounted on the top of the gantry, two bracket plates are fixedly mounted on the top of the gantry, the same active transmission shaft is rotatably mounted on the two bracket plates, first bevel gears are fixedly mounted on the two first driven shafts and the two second driven shafts, and the corresponding two first bevel gears are meshed with each other, second bevel gears are fixedly mounted on the active transmission shaft and the two second driven shafts, and the corresponding two second bevel gears are meshed with each other, a first driving motor is fixedly mounted on the top of the gantry, circular gears are fixedly mounted 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, and 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, and 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, and swing openings are opened on both sides of the bearing seat. The sides of the two simulated swing arms close to each other extend into the two swing openings respectively. And there are through holes on the inner walls of both sides of the two swinging mouths, 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 a central axis on the side 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 one side outer wall of the second C-shaped frame, the 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, and 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 bracket, the top of the bottom bracket is fixedly installed with a back plate, a bearing shaft is rotatably installed on the back plate, one end of the bearing shaft is fixedly installed with a transposition disc, the transposition disc passes through the bottom bracket and is movably connected to the bottom bracket, 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 plugged with dovetail inserts, and the two dovetail inserts The sides of the bars that are close to each other are respectively fixedly connected to the two simulated swing arms, and positioning countersunk holes are provided on the tops and bottoms of the two dovetail strips. 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. Positioning plug-ins are slidably installed on the tops and bottoms of the two fixing seats, and the corresponding two ends of the positioning plug-ins that are away from each other are fixedly connected to the corresponding pull-connecting plates, and the corresponding two ends of the positioning plug-ins 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 a second compression spring is sleeved on the four directional rods, and the two ends of the second compression spring are respectively fixedly connected to the baffle and the pull-connecting plate.

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 above 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. 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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