Automobile pull rod testing fixture

Abstract

The invention discloses an automobile pull rod testing fixture, and relates to the field of automobile pull rod size and appearance detection, and the automobile pull rod testing fixture comprises a workbench, the upper end part of the workbench is provided with a standard block, and the standard block is used for detecting the width of an opening of a U-shaped part of a tested pull rod; the positioning block and the detection rod are used for detecting the mounting hole of the detected pull rod and positioning the end, provided with the U-shaped part, of the detected pull rod; the detection block is located at one end, far away from the positioning block, of the workbench, after the pull rod is positioned, the pull rod rotates towards the detection block under the supporting action of the detection rod, so that the cylinder part gets close to the detection block, the detection block is provided with a measuring opening for detecting the length of the cylinder part and is further provided with a detection column, and the detection column is in sliding connection with the detection block in the axis direction; the detector is used for detecting the inner diameter of the through hole and the length of the detected pull rod; and the marking part is used for marking the pull rod which is detected to be qualified. The pull rod detection device has the effect of improving the detection efficiency of the pull rod.

Description

Technical Field

[0001] The present invention relates to the field of the detection of the dimensions and appearance of automotive tie rods, and more particularly to an automotive tie rod inspection fixture. Background Art

[0002] Automotive tie rods are an important part of vehicle components and play an important role in the automotive suspension system and steering system. They can be mainly divided into steering tie rods and system suspension tie rods. Among them, the suspension system tie rods are mainly used to connect the wheels and the vehicle body and bear the role of supporting and positioning the wheels.

[0003] The tie rod mainly includes a rod body part, a round tube part and a U-shaped part. The round tube part and the U-shaped part are respectively located at both ends of the rod body part along the length direction. The round tube part is hollow and is provided with a through hole along the axial direction. The end of the U-shaped part facing away from the rod body part is provided with an opening. The U-shaped part includes two side plates, and both side plates are provided with mounting holes for connecting bolts. The two mounting holes are located on the same axis, and the axis of the mounting holes is parallel to the axis of the through hole.

[0004] In view of the above related technologies, during the production process of the tie rod, it is necessary to inspect the length of the round tube part, the diameter of the through hole, the length of the rod body part, the width of the opening of the U-shaped part, the diameter of the mounting hole, etc. to ensure that the parts can be normally installed and used. However, due to the large number of parts to be inspected, it is more cumbersome to use measuring tools such as gauge blocks or vernier calipers for measurement, and the detection efficiency is relatively low. Summary of the Invention

[0005] In order to improve the detection efficiency of the tie rod, the present application provides an automotive tie rod inspection fixture.

[0006] The present application provides an automotive tie rod inspection fixture, adopting the following technical solutions: An automobile pull rod inspection tool, including a workbench, further comprising: a standard block located at the upper end of the workbench, and the width of the standard block is adapted to the open width of the U-shaped part of the standard pull rod, for detecting the open width of the U-shaped part of the pull rod to be measured; a positioning block positioned at the upper end of the workbench, and a through hole adapted to the diameter of the mounting hole is opened transversely in the positioning block, and the dimension of the positioning block along the axis direction of the through hole is not greater than the open width of the U-shaped part. The positioning block is provided with a detection rod, and the diameter of the detection rod is adapted to the inner diameter of the mounting hole on the standard pull rod; a detection block positioned at the upper end of the workbench and located on the side of the workbench away from the positioning block. A measuring port is opened at the upper end of the detection block along the direction from the positioning block to the detection block. The detection block is provided with a detection column, the detection column is parallel to the axis of the through hole, and the detection column passes through the positioning block along the axis direction and is slidably connected with the positioning block. The outer diameter of the detection column is adapted to the inner diameter of the through hole of the standard pull rod, and the distance between the axis of the detection column and the axis of the through hole is the same as the distance between the axis of the through hole and the axis of the mounting hole on the standard pull rod; a marking member located at the upper end of the workbench for marking the pull rod that passes the inspection.

[0007] By adopting the above technical solution, the open width of the U-shaped part is detected by the standard block. If the width meets the requirements, the U-shaped part is sleeved outside the positioning block. At this time, the positioning block is located between the two side plates of the pull rod to be measured. The detection rod is sequentially passed through the mounting holes on the side plates of the pull rod and the through hole of the positioning block. If the detection rod can pass through the two mounting holes while passing through the through hole, it means that the inner diameters of the two mounting holes are qualified and the two mounting holes are located on the same axis. Under the limiting action of the detection rod, the pull rod to be measured is rotated to make the cylindrical part approach the detection block. If the cylindrical part can enter the measuring port, it means that the circumferential dimension of the cylindrical part is qualified. At the same time, the detection column is pushed to make the detection column approach the through hole. If the detection column passes through the through hole and enters the cylindrical part, it means that the inner diameter of the through hole is qualified, and the distance between the axis of the through hole of the pull rod to be measured and the axis of the mounting hole meets the standard, that is, the length of the rod body part is qualified. After the inspection is completed and it is determined that the pull rod to be measured is qualified, the pull rod to be measured is marked by the marking member to complete the inspection. In the measurement process, manual measurement is not required for each link. If any link fails, the pull rod can be eliminated. There is no need to read the data during the measurement process, which is beneficial to improving the convenience of inspecting the pull rod.

[0008] Optionally, a support frame is provided at the upper end of the workbench. The standard block is located at the upper end of the support frame and is detachably connected to the support frame. Two sets of support mouth members are provided at the upper end of the support frame. The support mouth members are used to fix the side plates of the U-shaped part of the pull rod to be measured. Both sets of support mouth members are located at the upper end of the standard block and are arranged along the axis direction of the through hole. The support frame is provided with a driving member for driving the two support mouth members to approach or move away from each other. A fixing member for fixing the rod body part is also provided at the upper end of the support frame.

[0009] By adopting the above technical solution, the support frame positions the detection block, facilitating the operator to perform detection through the standard block. When the standard block cannot enter the opening of the U-shaped part of the tested pull rod, it indicates that the width of the opening is too narrow. At this time, the rod body part of the tested pull rod is fixed by the fixing piece, and the driving piece drives the two opening support pieces to approach each other, so that the two opening support pieces enter the inner side of the U-shaped part. Then, the driving piece drives the two opening support pieces to move away from each other, thereby expanding the width of the opening of the U-shaped part, fine-tuning the U-shaped part, and improving the qualification rate of the tested pull rod.

[0010] Optionally, the opening support piece includes a clamping block, a first elastic member, and a translation block. The translation block is located at the upper end of the standard block and is slidably connected to the support frame in the transverse direction. The driving piece is used to drive the two translation blocks to approach or move away from each other. The support frame is provided with a transverse groove for placing the translation block in the transverse direction. The clamping block is located above the translation block. The support frame is provided with a moving groove in the transverse direction. One side of the clamping block is located in the moving groove. The upper end of the translation block is provided with a jack. The lower end of the clamping block is fixedly connected with a plug block adapted to the jack. The support frame is provided with a vertical groove communicating with the moving groove in the vertical direction. The width of the vertical groove is adapted to the clamping block. When the clamping block is located in the vertical groove, the plug block and the translation block do not contact each other. The first elastic member is located between the support frame and the clamping block and applies a thrust to the clamping block away from the translation block.

[0011] By adopting the above technical solution, in the initial state, the clamping block is located in the vertical groove under the action of the elastic member. At this time, when the driving piece drives the translation block to move along the transverse groove, the clamping block remains stationary. When it is necessary to adjust any side plate of the tested pull rod, the clamping block corresponding to the corresponding side plate is moved out of the vertical groove, so that the clamping block enters the moving groove. At this time, the plug block enters the jack. When the translation block moves, it drives the clamping block to move, so that the clamping block finely adjusts the corresponding side plate. The two clamping blocks can work simultaneously or independently, improving the adjustment convenience.

[0012] Optionally, the power member includes two gears and a rotating member. The two gears mesh with each other and are both rotatably connected to the support frame in the vertical direction. The rotating member is arranged on one side of the support frame and is used to drive any gear to rotate. The gears correspond to the translation blocks one by one. The translation block is located at one end of the corresponding gear along the axis direction. A moving rod is fixedly connected to the side of the gear close to the translation block. The moving rod is arranged deviating from the axis of the gear. A connecting groove adapted to the moving rod is provided in the vertical direction on the side of the translation block close to the gear. The moving rod is located in the connecting groove and contacts the inner wall of the connecting groove.

[0013] By adopting the above technical solution, when the rotating member drives the gear to rotate, the gear drives the moving rod to move. When the moving rod moves in the transverse direction, it drives the translation block to move through the connection of the connecting groove, thereby realizing the synchronous movement and stop of the two translation blocks.

[0014] Optionally, a moving block is provided at the upper end of the workbench. The moving block is slidably connected to the workbench in the direction from the positioning block to the detection block. The detection block is provided at the upper end of the moving block and moves synchronously with the moving block. A chute for guiding the movement of the moving block is opened at the upper end of the workbench. The moving block is located in the chute and contacts the inner wall of the chute. A threaded rod is provided in the chute. The threaded rod is rotatably connected to the workbench, and the threaded rod passes through the moving block and is threadedly connected to the moving block.

[0015] By adopting the above technical solution, the workbench limits the moving block through the chute. When the threaded rod is rotated, the moving block drives the detection block to approach or move away from the positioning block, thereby adjusting the distance between the detection block and the positioning block, which is beneficial to measuring tie rods of different lengths and improving the convenience of measurement.

[0016] Optionally, a support plate is fixedly provided at the upper end of the workbench. The support plate is located on one side of the positioning block along the axis direction of the through hole. The detection rod passes through the support plate along the axis direction of the through hole and is slidably connected to the support plate. A moving plate is vertically provided at one end of the detection rod away from the positioning block. A sliding rod is fixedly connected to one end of the moving plate away from the detection rod. The sliding rod passes through the moving plate and is slidably connected to the moving plate. An avoidance hole adapted to the sliding rod is opened at the lower end of the positioning block. When the detection rod passes through the through hole, the sliding rod is located in the avoidance hole.

[0017] By adopting the above technical solution, the support plate supports and guides the sliding rod, so that the sliding plate and the moving plate cooperate to support and guide the detection rod, improving the convenience when moving the detection rod. The positioning block avoids the sliding rod through the avoidance hole, reducing the probability of collision between the sliding rod and the positioning block.

[0018] Optionally, the marking member includes a marking pen, a mounting seat and an elastic member II. The mounting seat is located at the upper end of the workbench and is slidably connected to the workbench in the direction from the positioning block to the detection block. The marking pen is located at the upper end of the mounting seat and points to the tie rod to be detected. The marking pen is slidably connected to the mounting seat in the direction of approaching or moving away from the tie rod to be detected. The elastic member II is located between the marking pen and the mounting seat and is used to drive the marking pen away from the tie rod to be detected.

[0019] By adopting the above technical solution, the workbench supports the marking pen through the mounting seat. In the initial state, the elastic member II drives the marking pen away from the tie rod to be detected, thereby preventing the detection pen from accidentally touching the tie rod to be detected. When it is necessary to mark that the tie rod to be detected is qualified, the marking pen is pushed towards the tie rod to be detected and the mounting seat is moved, thereby completing the marking.

[0020] Optionally, both the detection block and the detection column are made of insulating materials. A first electrode plate is provided on one side of the detection block away from the detection column. The detection block is provided with an avoidance groove for installing the first electrode plate. The avoidance groove communicates with the measurement port. The first electrode plate protrudes towards the detection column in its natural state. A movable block is slidably connected to the outer circumference of the detection column in the radial direction. A third elastic member is provided between the movable block and the detection column. The third elastic member applies a thrust force to the movable block away from the axis of the detection column. In the natural state of the third elastic member, the distance between the side of the movable block away from the axis of the detection column and the axis of the detection column is within the maximum error range of the radius of the standard pull rod through hole. The movable block is electrically connected to the first electrode plate, and both are connected to an indicator light. The movable block is made of a conductive material. When both the movable block and the first electrode plate are in contact with the cylindrical part, the indicator light lights up.

[0021] By adopting the above technical solution, when the cylindrical part enters the measurement port, the first electrode plate is pressed into the avoidance groove and contacts the cylindrical part. The pull rod is made of metal and has conductivity. If the inner diameter of the through hole is not greater than the allowable error range, at this time, the movable block contacts the inner wall of the through hole under the action of the elastic member. The first electrode plate is connected to the movable block through the cylindrical part, so that the circuit is closed and the indicator light lights up, indicating that the inner diameter of the through hole of the measured pull rod is not too large, thus improving the detection accuracy.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The open width of the U-shaped part is detected by the standard block. If the width meets the requirements, the U-shaped part is sleeved outside the positioning block. At this time, the positioning block is located between the two side plates of the measured pull rod. The detection rod is sequentially passed through the mounting holes on the side plates of the pull rod and the through holes of the positioning block. If the detection rod can pass through the two mounting holes while passing through the through hole, it means that the inner diameters of the two mounting holes are qualified and the two mounting holes are on the same axis. Under the limiting action of the detection rod, the measured pull rod is rotated to make the cylindrical part approach the detection block. If the cylindrical part can enter the measurement port, it means that the circumferential dimension of the cylindrical part is qualified. At the same time, the detection column is pushed to make the detection column approach the through hole. If the detection column passes through the through hole and enters the cylindrical part, it means that the inner diameter of the through hole is qualified, and the distance between the axis of the through hole of the measured pull rod and the axis of the mounting hole meets the standard, which means that the length of the rod body part is qualified. After the detection is completed and it is determined that the measured pull rod is qualified, the measured pull rod is marked by the marking part to complete the detection. During the measurement process, manual measurement is not required for each link. If any link fails, the pull rod can be eliminated. There is no need to read the data during the measurement process, which is beneficial to improving the convenience of detecting the pull rod; 2. When the cylindrical part enters the measuring port, the first electrode sheet is pressed into the avoidance groove and contacts the cylindrical part. The pull rod is made of metal and is conductive. If the inner diameter of the through hole is not greater than the allowable error range, the movable block will contact the inner wall of the through hole under the action of the elastic part. The first electrode sheet is connected to the movable block through the cylindrical part, so that the circuit is closed and the indicator light is on, indicating that the inner diameter of the through hole of the measured pull rod is not too large, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the embodiment.

[0024] Figure 2 It is a schematic diagram intended to highlight the installation structure of the clamping block.

[0025] Figure 3 is a schematic diagram intended to highlight the structure of the positioning block.

[0026] Figure 4 It is a schematic diagram intended to highlight the structure of the detection block.

[0027] Description of the accompanying drawings: 1. workbench; 11. moving block; 12. slide groove; 13. threaded rod; 14. support plate; 2. standard block; 3. positioning block; 31. through hole; 32. detection rod; 33. moving plate; 34. slide rod; 35. avoidance hole; 4. detection block; 41. measuring port; 42. detection column; 43. avoidance groove; 5. marking part; 51. marking pen; 52. mounting seat; 521. clamping ring; 53. elastic part 2; 6. support frame; 61. support part; 611. clamping block; 61 2. Elastic member one; 613. Translation block; 614. Plug-in block; 615. Socket; 616. Connecting slot; 62. Driving member; 621. Gear; 622. Rotating member; 623. Moving rod; 64. Fixing member; 65. Horizontal slot; 66. Moving slot; 67. Vertical slot; 71. First electrode sheet; 72. Movable block; 73. Elastic member three; 74. Indicator light; 75. Second electrode sheet; 110. Shaft portion; 120. U-shaped portion; 121. Mounting hole; 130. Cylindrical portion; 131. Through hole. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0029] The embodiment of the present application discloses an automobile tie rod inspection fixture.

[0030] Example: Reference Figure 1 and Figure 2, An automobile pull rod inspection tool, including a workbench 1. At the upper end of the workbench 1, a standard block 2 is provided. The width of the standard block 2 is adapted to the width of the opening of the U-shaped part 120 on the standard pull rod. At the upper end of the workbench 1, a support frame 6 is fixedly connected. One end of the standard block 2 along the length direction is provided with a mounting plate. The mounting plate is attached to the support frame 6, and the mounting plate is detachably connected to the support frame 6 by bolts. The standard block 2 is detachably arranged, which is convenient for replacement.

[0031] Refer to Figure 1 and Figure 2 , When detecting the pull rod, first align one end of the pull rod with the U-shaped part 120 with the standard block 2. If the standard block 2 enters the opening of the U-shaped part 120, it means that the width of the opening of the U-shaped part 120 meets the usage requirements at this time. If the standard block 2 cannot enter the opening of the U-shaped part 120, it means that the width dimension of the opening of the U-shaped part 120 is unqualified. The support frame 6 is provided with two sets of support mouth parts 61. The two sets of support mouth parts 61 are both located above the standard block 2 and are slidably connected to the support frame 6 along the transverse direction.

[0032] Refer to Figure 1 and Figure 2 , The support mouth part 61 includes a clamping block 611, a first elastic part 612 and a translation block 613. The support frame 6 is provided with a transverse groove 65 adapted to the translation block 613 along the transverse direction. The translation block 613 is located in the transverse groove 65 and is slidably connected to the support frame 6 along the length direction of the transverse groove 65. The support frame 6 is provided with a driving part 62 for driving the two translation blocks 613 to approach or move away from each other. The driving part 62 includes two gears 621 and a rotating part 622. The two gears 621 mesh with each other and are both rotatably connected to the support frame 6 along the vertical direction.

[0033] Refer to Figure 1 and Figure 2 , The rotating part 622 is used to drive any one of the gears 621 to rotate. It can be a motor, an electric push rod, a turning handle or other components. In this embodiment, the rotating part 622 is a turning handle. One end of the turning handle is fixedly connected to any one of the gears 621, and the turning handle is located outside the support frame 6, which is convenient for the operator to rotate. The rotation of the gear 621 is manually operated, which is convenient for controlling the rotation speed and strength.

[0034] Refer to Figure 1 and Figure 2, the gears 621 correspond to the translation blocks 613 one by one. The gears 621 are located at one end of the corresponding translation blocks 613 in the axial direction, and a moving rod 623 is fixedly connected to the side of the gear 621 close to the translation block 613. The translation block 613 is vertically provided with a connection groove 616 adapted to the moving rod 623. The moving rod 623 is located in the connection groove 616 and is slidably connected to the translation block 613 along the length direction of the connection groove 616. In the initial state, the rotating rod is located at the upper end of the gear 621. When the operator rotates the gear 621, the gear 621 drives the translation block 613 to move along the transverse groove 65 through the moving rod 623.

[0035] Refer to Figure 1 and Figure 2 , the clamping block 611 is located at the upper end of the translation block 613. The support frame 6 is vertically provided with vertical grooves 67 corresponding to the clamping blocks 611 one by one. The distance between the two vertical grooves 67 is the same as the distance between the two side plates on the standard pull rod. In the initial state, the clamping block 611 is located in the vertical groove 67 and is slidably connected to the support frame 6 along the length direction of the vertical groove 67. The first elastic member 612 includes a first spring and a vertically moving plate. The vertically moving plate is slidably connected to the support frame 6 vertically. One end of the first spring is fixedly connected to the vertically moving plate, and the other end is fixedly connected to the support frame 6. The first spring applies an upward pulling force to the vertically moving frame.

[0036] Refer to Figure 1 and Figure 2 , the clamping block 611 is fixedly connected with a clamping block. The clamping block is slidably connected to the vertically moving plate transversely. Under the action of the first spring, the translation plate applies a pulling force to the clamping block 611 through the clamping block, so that the clamping block 611 has a tendency to move away from the translation block 613, and further makes the clamping block 611 stay at a position in the vertical groove 67 far from the translation block 613. A plug is fixedly connected to the lower end of the clamping block 611. The translation block 613 is vertically provided with a jack 615 adapted to the plug. In the initial state, the translation block 613 is located directly below the clamping block 611, and the plug is aligned with the jack 615.

[0037] Refer to Figure 1 and Figure 2 , a clamping groove is vertically opened on the side of the clamping block 611 away from the support frame 6. The clamping groove is adapted to the side plate of the pull rod. When it is detected that the opening width of the U-shaped part 120 of the pull rod is too small, the state of any one or two side plates is usually adjusted. The two clamping blocks 611 correspond to the two side plates respectively. For the side plate that needs to be adjusted, the corresponding clamping block 611 is pushed along the vertical groove 67 towards the translation block 613. The support frame 6 is horizontally provided with a moving groove 66 communicating with the vertical groove 67. The moving groove 66 is located at one end of the vertical groove 67 close to the transverse groove 65.

[0038] Refer to Figure 1 and Figure 2, when the clamping block 611 is located in the vertical groove 67, its lateral displacement is restricted. When the clamping block 611 disengages from the vertical groove 67 and enters the moving groove 66, the restriction on the lateral displacement of the clamping block 611 is released. Move the clamping plate laterally so that the position of the clamping plate corresponds to the position of the side plate to be adjusted. And after the clamping block 611 disengages from the vertical groove 67, the insertion block is inserted into the insertion hole 615 of the corresponding translation block 613. At this time, the two side plates of the pull rod are respectively inserted into the clamping grooves of the corresponding clamping blocks 611. Rotate the turning handle so that the translation block 613 drives the corresponding clamping block 611 to move laterally, and the clamping block 611 corrects the side plate when moving. When the clamping block 611 moves, it drives the clamping block to move along the vertical moving plate. When the adjustment is completed, both clamping blocks 611 are aligned with the vertical groove 67 and enter the vertical groove 67 under the action of the first elastic member 612.

[0039] Refer to Figure 1 and Figure 2 , the support frame 6 is provided with a fixing member 64 for supporting the pull rod. The fixing member 64 includes a support arm and a fixing arm. The fixing arm is fixedly connected to the support frame 6. The support arm is located on the side of the fixing arm away from the support frame 6 and is hinged to the fixing arm vertically. The fixing arm is fixedly connected with a support portion, and is in a horizontal state when the support arm contacts the support portion. The support arm is fixedly connected with a support claw, and the support claw is adapted to the diameter of the rod body portion 110. When adjusting the side plate, the rod body portion 110 is placed in the support claw so that the fixing member 64 positions the rod body portion 110. And during the process of adjusting the side plate, the two clamping blocks 611 can move simultaneously or separately, improving the adjustment convenience.

[0040] Refer to Figure 1 and Figure 3 , a positioning block 3 is further provided at the upper end of the workbench 1. The positioning block 3 is located at a position on the workbench 1 close to the support frame 6, and the width of the positioning block 3 along the length direction of the transverse groove 65 is not greater than the width of the opening of the U-shaped portion 120. A through hole 31 is opened in the positioning block 3 along the length direction of the transverse groove 65, and the inner diameter of the through hole 31 is the same as the inner diameter of the mounting hole 121 on the standard pull rod. A detection rod 32 is further provided at the upper end of the workbench 1. The detection rod 32 is located at one end of the positioning block 3 and is coaxial with the through hole 31. The workbench 1 is fixedly connected with a support plate 14 for supporting the detection rod 32. The detection rod 32 passes through the support plate 14 and is slidably connected with the support plate 14.

[0041] Refer to Figure 1 and Figure 3, the outer diameter of the detection rod 32 is adapted to the inner diameter of the through hole 31. After detecting that the opening of the U-shaped part 120 on the tested pull rod meets the standard, the U-shaped part 120 is sleeved outside the positioning block 3, and the mounting hole 121 is aligned with the through hole 31. At this time, the detection rod 32 is pushed so that the detection rod 32 sequentially passes through the mounting hole 121 and the through hole 31. If the detection rod 32 can still smoothly pass through the two mounting holes 121 while passing through the through hole 31, it indicates that the aperture of the mounting hole 121 meets the standard, and at the same time, the two mounting holes 121 of the tested pull rod are on the same axis.

[0042] Refer to Figure 1 and Figure 3 , a moving plate 33 is fixedly connected to the side of the detection rod 32 away from the positioning block 3. A sliding rod 34 is vertically fixed at one end of the moving plate 33 away from the detection rod 32. The sliding rod 34 is parallel to the detection rod 32. When the detection rod 32 moves, it drives the sliding rod 34 to move. The sliding rod 34 passes through the support plate 14 and is slidably connected to the support plate 14. The positioning block 3 is provided with an avoidance hole 35 adapted to the sliding rod 34. The sliding rod 34 cooperates with the support plate 14 to improve the moving stability of the detection rod 32. And when the detection rod 32 passes through the through hole 31, the sliding rod 34 is located in the avoidance hole 35.

[0043] Refer to Figure 1 and Figure 4 , a detection block 4 is provided at the upper end of the workbench 1. The detection block 4 is located on the side of the workbench 1 away from the standard block 2. A moving block 11 is provided at the upper end of the workbench 1. The workbench 1 is provided with a chute 12 in the direction from the detection block 4 to the positioning block 3. The moving block 11 is located in the chute 12 and is slidably connected to the workbench 1 along the length direction of the chute 12. A threaded rod 13 is arranged in the chute 12. The threaded rod 13 passes through the moving block 11 along the length direction of the chute 12 and is threadedly connected to the moving block 11, and the threaded rod 13 is rotatably connected to the workbench 1 around its own axis. When the threaded rod 13 is rotated, the threaded rod 13 drives the moving block 11 to move along the chute 12. The detection block 4 is located at the upper end of the moving block 11 and moves synchronously with the moving block 11, thereby facilitating the adjustment of the position of the detection block 4. In the initial state, the distance between the positioning block 3 and the detection block 4 is the same as the distance between the cylindrical part 130 and the U-shaped part 120 on the standard pull rod.

[0044] Refer to Figure 1 and Figure 4, a measuring port 41 is provided at the upper end of the detection block 4. When the detection rod 32 passes through the mounting hole 121 of the to-be-tested drawbar and the through hole 31, one end of the to-be-tested drawbar provided with the U-shaped part 120 is restricted. Rotate the drawbar around the detection rod 32 so that one end of the drawbar provided with the cylindrical part 130 approaches the detection block 4. The width of the measuring port 41 is the same as the length of the cylindrical part 130 of the standard drawbar along the axial direction. If the cylindrical part 130 can smoothly enter the measuring port 41, it indicates that the length of the cylindrical part 130 meets the standard. If the cylindrical part 130 cannot enter the measuring port 41, it indicates that the length of the cylindrical part 130 is too long and does not meet the standard.

[0045] Refer to Figure 1 and Figure 4 , a detection post 42 is provided on one side of the detection block 4. The detection post 42 is parallel to the axis of the through hole 31, and the detection post 42 passes through the positioning block 3 and is slidably connected to the positioning block 3. The outer diameter of the detection post 42 is the same as the diameter of the through hole 131 on the standard drawbar. When the cloud synchronously enters the measuring port 41 and contacts the inner wall of the measuring port 41. The through hole 131 is aligned with the detection post 42, and the detection post 42 is pushed to make the detection post 42 approach the cylindrical part 130. If the detection post 42 can smoothly enter the through hole 131, it indicates that the diameter of the through hole 131 of the cylindrical part 130 of the to-be-tested drawbar meets the usage requirements, and at this time the distance between the axis of the detection post 42 and the axis of the through hole 31 is the same as the distance between the axis of the through hole 131 and the axis of the mounting hole 121 on the standard drawbar. After the detection post 42 enters the through hole 131, it indicates that the length of the rod body part 110 of the to-be-tested drawbar meets the detection standard.

[0046] Refer to Figure 1 and Figure 4 , the detection block 4 is further provided with a first electrode plate 71. The first electrode plate 71 is located on the side of the measuring port 41 away from the detection post 42. The detection block 4 is provided with an avoidance groove 43 adapted to the first electrode plate 71. The first electrode plate 71 is located in the avoidance groove 43 and is fixedly connected to the detection block 4. The first electrode plate 71 is made of elastic conductive metal, such as iron and copper, which is prior art and will not be elaborated here. When the cylindrical part 130 does not enter the measuring port 41, the first electrode plate 71 passes through the avoidance groove 43 and approaches the detection post 42. After the cylindrical part 130 enters the measuring port 41, the first electrode plate 71 is deformed by the extrusion of the cylindrical part 130, and at this time the first electrode plate 71 is in contact with the cylindrical part 130.

[0047] Refer to Figure 1 and Figure 4, a cavity is provided inside the detection column 42. The detection column 42 is also provided with a round hole in the diameter direction, and the round hole communicates the cavity with the outside. An active block 72 is arranged in the round hole. In this embodiment, the active block 72 is spherical. The active block 72 is located in the round hole and is slidably connected to the detection column 42 in the radial direction. A third elastic member 73 is arranged in the cavity. The third elastic member 73 is a spring. A second electrode plate 75 is also fixedly connected in the cavity. The second electrode plate 75 is also made of elastic conductive metal. One end of the spring is fixedly connected to the second electrode plate 75, and the other end abuts against the active block 72. A wire is connected between the active block 72 and the second electrode plate 75.

[0048] Refer to Figure 1 and Figure 4 , the third elastic member 73 exerts a thrust on the active block 72 in a direction away from the axis of the detection column 42, so that one side of the active block 72 passes through the round hole and extends to the outside of the detection column 42. In the natural state of the third elastic member 73, the distance between the side of the active block 72 away from the axis of the detection column 42 and the axis of the active column is the maximum value within the allowable error range of the radius of the through hole 131. An indicator light 74 is installed outside the detection column 42, and a power supply for supplying power to the indicator light 74 is provided. Wires are connected between the indicator light 74 and the second electrode plate 75 and the first electrode plate 71 respectively.

[0049] Refer to Figure 1 and Figure 4 , the pull rod is made of metal and has conductivity. When the detection column 42 enters the through hole 131, if the active block 72 contacts the inner wall of the through hole 131, then at this time, the first electrode plate 71 is connected to the second electrode plate 75 through the cylindrical part 130 and the active block 72, and a closed loop is formed between the indicator light 74 and the power supply, and the indicator light 74 lights up. If the active block 72 cannot contact the inner wall of the through hole 131, the indicator light 74 does not light up. At this time, it means that the inner diameter of the through hole 131 of the measured pull rod is too large. It should be noted that the voltage required by the indicator light 74 is within a safe range and is harmless to the operator. At the same time, both the detection block 4 and the detection column 42 are made of insulating materials, such as plastics.

[0050] Refer to Figure 1 and Figure 3, a marking member 5 is further provided at the upper end of the workbench 1. The marking member 5 includes a marking pen 51, a mounting seat 52 and a second elastic member 53. The mounting seat 52 is slidably connected to the workbench 1 along the length direction of the chute 12, and a clamping ring 521 is provided at the upper end of the mounting seat 52. The clamping ring 521 is slidably connected to the mounting seat 52 in a direction perpendicular to the chute 12, and the clamping ring 521 moves when the mounting seat 52 moves. The marking pen 51 is located inside the clamping ring 521 and is snap-connected to the clamping ring 521. The clamping ring 521 drives the marking pen 51 to move when it moves. The second elastic member 53 is a spring. One end of the spring is fixedly connected to the mounting seat 52, and the other end is fixedly connected to the clamping ring 521. In the natural state of the second elastic member 53, the clamping ring 521 is driven to move away from the positioning block 3.

[0051] Referring to Figure 1 and Figure 3 , when the detection column 42 passes through the through hole 131 of the tested pull rod, the marking pen 51 is aligned with the rod body portion 110 of the tested pull rod. After the detection is completed and it is confirmed that the tested pull rod is qualified. Push the marking pen 51 towards the rod body portion 110 so that the marking pen 51 contacts the rod body portion 110, and move the mounting seat 52 so that the mounting seat 52 drives the marking pen 51 to move along the rod body portion 110, thereby marking the rod body portion 110 through the marking pen 51. Further, a prediction bolt is also placed at the upper end of the workbench 1. Before detecting the U-shaped portion 120, the prediction bolt is sequentially fitted with the two mounting holes 121, and then it is tested whether the mounting holes 121 meet the usage requirements of bolt connection.

[0052] The implementation principle of an automotive pull rod inspection tool according to an embodiment of the present application is as follows: First, the detection block 4 is used to detect the open width of the U-shaped portion 120 of the tested pull rod. After the detection is qualified, the positioning block 3 and the detection rod 32 are used in cooperation to detect the aperture and position of the mounting hole 121. Then, under the cooperation of the detection rod 32 and the positioning block 3, the U-shaped portion 120 of the tested pull rod is positioned, the pull rod is rotated around the detection rod 32, and the cylindrical portion 130 is moved closer to the measuring port 41. The length of the cylindrical portion 130 is detected through the measuring port 41. When the cylindrical portion 130 enters the measuring port 41, the detection column 42 is pushed to detect the inner diameter of the through hole 131 and the distance between the through hole 131 and the mounting hole 121. After the detection is completed, the tested pull rod is marked through the marking pen 51. During the detection process, there is no need to read specific values, and unqualified products can be eliminated if any link fails. The detection process is simple, which is beneficial to improving the detection convenience of the pull rod.

[0053] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vehicle tie rod inspection fixture, comprising a workbench (1), characterized in that: Also includes: A standard block (2), the standard block (2) is located at the upper end of the workbench (1), and the width of the standard block (2) is adapted to the width of the opening of the U-shaped portion (120) of the standard pull rod, and is used to detect the width of the opening of the U-shaped portion (120) of the pull rod to be tested; A positioning block (3) is positioned at the upper end of the workbench (1), and the positioning block (3) is provided with a through hole (31) in the transverse direction, which is adapted to the diameter of the mounting hole (121). The dimension of the positioning block (3) along the axial direction of the through hole (31) is not greater than the width of the opening of the U-shaped portion (120). The positioning block (3) is provided with a detection rod (32), and the diameter of the detection rod (32) is adapted to the inner diameter of the mounting hole (121) on the standard pull rod; A detection block (4) is positioned at the upper end of the workbench (1) and is located on a side of the workbench (1) away from the positioning block (3). A measuring port (41) is opened at the upper end of the detection block (4) along the direction from the positioning block (3) to the detection block (4). The detection block (4) is provided with a detection column (42). The detection column (42) is parallel to the axis of the through hole (31). The detection column (42) passes through the positioning block (3) along the axis and is slidably connected to the positioning block (3). The outer diameter of the detection column (42) is matched with the inner diameter of the through hole (131) of the standard pull rod. The distance between the axis of the detection column (42) and the axis of the through hole (31) is the same as the distance between the axis of the through hole (131) on the standard pull rod and the axis of the mounting hole (121). The marking part (5) is located at the upper end of the workbench (1) and is used to mark the pull rods that have passed the inspection.

2. The automobile tie rod inspection fixture according to claim 1, characterized in that: The upper end of the workbench (1) is provided with a support frame (6), the standard block (2) is located at the upper end of the support frame (6) and is detachably connected to the support frame (6), the upper end of the support frame (6) is provided with two groups of support members (61), the support members (61) are used to fix the side plates of the U-shaped portion (120) of the measured pull rod, the two groups of support members (61) are both located at the upper end of the standard block (2) and are arranged along the axial direction of the through hole (31), the support frame (6) is provided with a driving member (62) for driving the two support members (61) to move closer to or away from each other, and the upper end of the support frame (6) is also provided with a fixing member (64) for fixing the rod body (110).

3. The automobile tie rod inspection fixture according to claim 2, characterized in that: The support member (61) comprises a clamping block (611), an elastic member (612) and a translation block (613); the translation block (613) is located at the upper end of the standard block (2) and is slidably connected to the support frame (6) in the transverse direction; the driving member (62) is used to drive the two translation blocks (613) to move closer to or farther from each other; the support frame (6) is provided with a transverse groove (65) for accommodating the translation block (613) in the transverse direction; the clamping block (611) is located above the translation block (613); the support frame (6) is provided with a moving groove (66) in the transverse direction; one side of the clamping block (611) is located in the moving groove (66) The upper end of the translation block (613) is provided with a plug hole (615), and the lower end of the clamping block (611) is fixedly connected with a plug-in block (614) adapted to the plug hole (615). The support frame (6) is provided with a vertical groove (67) connected to the movable groove (66) in the vertical direction. The vertical groove (67) is adapted to the width of the clamping block (611). When the clamping block (611) is located in the vertical groove (67), the plug-in block and the translation block (613) do not contact each other. The elastic member 1 (612) is located between the support frame (6) and the clamping block (611), and applies a thrust to the clamping block (611) away from the translation block (613).

4. The automobile tie rod inspection fixture according to claim 3, characterized in that: The power member comprises two gears (621) and a rotating member (622). The two gears (621) are meshed with each other and are both rotatably connected to the support frame (6) in the vertical direction. The rotating member (622) is arranged on one side of the support frame (6) and is used to drive any gear (621) to rotate. The gears (621) correspond to the translation blocks (613) in a one-to-one manner. The translation blocks (613) are located at one end of the corresponding gears (621) along the axial direction. A moving rod (623) is fixedly connected to a side of the gear (621) close to the translation block (613). The moving rod (623) is arranged to deviate from the axis of the gear (621). A connecting groove (616) adapted to the moving rod (623) is vertically opened on a side of the translation block (613) close to the gear (621). The moving rod (623) is located in the connecting groove (616) and contacts the inner wall of the connecting groove (616).

5. The automobile tie rod inspection fixture according to claim 1, characterized in that: A moving block (11) is provided at the upper end of the workbench (1). The moving block (11) is slidably connected to the workbench (1) along the direction in which the positioning block (3) points to the detection block (4). The detection block (4) is arranged at the upper end of the moving block (11) and moves synchronously with the moving block (11). A sliding groove (12) for guiding the movement of the moving block (11) is provided at the upper end of the workbench (1). The moving block (11) is located in the sliding groove (12) and contacts the inner wall of the sliding groove (12). A threaded rod (13) is provided in the sliding groove (12). The threaded rod (13) is rotatably connected to the workbench (1), and the threaded rod (13) passes through the moving block (11) and is threadedly connected to the moving block (11).

6. The automobile tie rod inspection fixture according to claim 1, characterized in that: A support plate (14) is fixedly arranged at the upper end of the workbench (1), and the support plate (14) is located on one side of the positioning block (3) along the axial direction of the through hole (31). The detection rod (32) passes through the support plate (14) along the axial direction of the through hole (31) and is slidably connected to the support plate (14). A moving plate (33) is vertically arranged at one end of the detection rod (32) away from the positioning block (3). A sliding rod (34) is fixedly connected to one end of the moving plate (33) away from the detection rod (32). The sliding rod (34) passes through the moving plate (33) and is slidably connected to the moving plate (33). A avoidance hole (35) adapted to the sliding rod (34) is opened at the lower end of the positioning block (3). When the detection rod (32) passes through the through hole (31), the sliding rod (34) is located in the avoidance hole (35).

7. The automobile tie rod inspection fixture according to claim 1, characterized in that: The marking component (5) comprises a marking pen (51), a mounting seat (52) and a second elastic member (53); the mounting seat (52) is located at the upper end of the workbench (1) and is slidably connected to the workbench (1) along the direction from the positioning block (3) to the detection block (4); the marking pen (51) is located at the upper end of the mounting seat (52) and points to the pull rod to be detected; the marking pen (51) is slidably connected to the mounting seat (52) along the direction approaching or moving away from the pull rod to be detected; the second elastic member (53) is located between the marking pen (51) and the mounting seat (52) and is used to drive the marking pen (51) away from the pull rod to be detected.

8. The automobile tie rod inspection fixture according to claim 1, characterized in that: The detection block (4) and the detection column (42) are both made of insulating material. A first electrode sheet (71) is provided on a side of the detection block (4) away from the detection column (42). The detection block (4) is provided with an avoidance groove (43) for installing the first electrode sheet (71). The avoidance groove (43) is communicated with the measuring port (41). The first electrode sheet (71) protrudes in a direction close to the detection column (42) in a natural state. The outer circle of the detection column (42) is radially slidably connected with a movable block (72). An elastic member (73) is provided between the movable block (72) and the detection column (42). The elastic member (73) (73) A thrust is applied to the movable block (72) away from the axis of the detection column (42). When the elastic member (73) is in a natural state, the distance between the side of the movable block (72) away from the axis of the detection column (42) and the axis of the detection column (42) is within the maximum error range of the radius of the standard pull rod through hole (131). The movable block (72) is electrically connected to the first electrode sheet (71) and both are connected to an indicator light (74). The movable block (72) is made of a conductive material. When the movable block (72) and the first electrode sheet (71) are in contact with the cylindrical portion (130), the indicator light (74) lights up.

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