Universal clamp for detecting meshing clearance of automobile steering device

Abstract

The utility model relates to a universal clamp for detecting the meshing clearance of an automobile steering device, and belongs to the technical field of steering device detection. The first sliding rail is fixedly installed at one end of the bottom plate, the first supporting plate is slidably installed on the first sliding rail, the first fixing piece is fixedly installed on the first supporting plate, the second sliding rail is fixedly installed at the other end of the bottom plate, the second supporting plate is slidably installed on the second sliding rail, and the second fixing piece is fixedly installed on the second supporting plate. A third sliding rail is fixedly installed on the bottom plate on one side of the first sliding rail, a third supporting plate is installed on the third sliding rail in a sliding mode, a fourth sliding rail is fixedly installed on the bottom plate on one side of the second sliding rail, a fourth supporting plate is installed on the fourth sliding rail in a sliding mode, and a dial indicator detection assembly is detachably installed on the third supporting plate and the fourth supporting plate. The universal clamp for detecting the meshing clearance of the automobile steering device can adapt to the automobile steering devices with different lengths, meanwhile, the stability of the dial indicator can be improved, and the accuracy of the meshing clearance detection is ensured.

Description

Technical Field

[0001] The utility model relates to a general fixture for detecting the meshing clearance of an automotive steering gear, belonging to the technical field of steering gear detection. Background Technique

[0002] In order to ensure the qualified rate of the product quality of the automotive steering gear, after the steering gear is assembled, the meshing clearance of each steering gear will be checked. If the meshing clearance is not detected, in case there is a problem of abnormal noise in the steering gear, it will directly affect the customer experience.

[0003] At present, the detection method for the meshing clearance of an automotive steering gear is to place the steering gear on a detection fixture for detection. The existing detection fixture includes a bottom plate. One end of the bottom plate is fixedly installed with a left positioning column, and the other end of the bottom plate is fixedly installed with a right positioning column. The left positioning column and the right positioning column can support and fix the automotive steering gear. Then, a dial indicator is inserted into the adjusting plug hole of the automotive steering gear assembly, the needle of the dial indicator is in contact with the outer circle of the rack of the automotive steering gear, and the dial indicator is pressed tightly by hand, and then the meshing clearance detection can be started. Since the bottom plate is fixedly installed with the left positioning column and the right positioning column, the positioning columns cannot be adjusted in position, so this detection fixture cannot be adjusted for automotive steering gears of different lengths, and the universality is poor. On the other hand, the manual pressing of the dial indicator has poor stability, which is easy to cause the dial indicator to shake, resulting in inaccurate measurement of the dial indicator. Therefore, it is necessary to improve it. Summary of the Invention

[0004] The purpose of the utility model is to provide a general fixture for detecting the meshing clearance of an automotive steering gear, which has a simple structure and is convenient to adjust to adapt to automotive steering gears of different lengths. At the same time, it can also improve the stability of the dial indicator and ensure the accuracy of the meshing clearance detection.

[0005] The technical solution of the utility model is as follows:

[0006] A general fixture for detecting the meshing clearance of an automotive steering gear includes a bottom plate, and is characterized in that: a first slide rail is fixedly installed at one end of the bottom plate, a first support plate is slidably installed on the first slide rail, a first fixing member is fixedly installed on the first support plate, a second slide rail is fixedly installed at the other end of the bottom plate, a second support plate is slidably installed on the second slide rail, a second fixing member is fixedly installed on the second support plate, a third slide rail is fixedly installed on the bottom plate on one side of the first slide rail, a third support plate is slidably installed on the third slide rail, a fourth slide rail is fixedly installed on the bottom plate on one side of the second slide rail, a fourth support plate is slidably installed on the fourth slide rail, and a dial indicator detection component is detachably installed on the third support plate and the fourth support plate.

[0007] The first support plate, the second support plate, the third support plate and the fourth support plate are in a "Z" - shaped cross - section.

[0008] One end of the described first support plate, second support plate, third support plate and fourth support plate is respectively provided with an upper threaded hole, and the upper threaded hole is connected to a fixing member through a first screw rod. The other ends of the first support plate, second support plate, third support plate and fourth support plate are respectively provided with lower fixing holes.

[0009] A plurality of adjusting threaded holes are provided on the bottom plate corresponding to the lower fixing holes, and a second screw rod is inserted into the lower fixing hole corresponding to the adjusting threaded hole. The second screw rod is in threaded connection with the adjusting threaded hole in a matching manner.

[0010] The first fixing member and the second fixing member include a positioning platform. The cross-section of the positioning platform is in a "convex" shape, the top surface of the positioning platform is inclined, a positioning column is fixedly installed on the inclined top surface, and a limiting cap is threadedly installed on the positioning column.

[0011] The dial indicator detection assembly includes a dial indicator body and a fixing plate. A support column is installed on the fixing plate, a circular platform is fixedly installed on the support column, a sleeve is fixedly installed on the circular platform, a third screw rod is installed on the sleeve, a sleeve is sleeved inside the sleeve, and the dial indicator body is fixedly installed inside the sleeve. The needle of the dial indicator body extends to the outside of the sleeve.

[0012] The beneficial effects of the present utility model compared with the prior art are as follows:

[0013] When the general fixture for detecting the meshing clearance of an automotive steering gear is used, first, according to the length of the automotive steering gears of the same batch, the distance between the first support plate and the second support plate is adjusted to adapt to the length of the automotive steering gears of this batch. The first support plate and the second support plate are locked on the bottom plate through the second screw rod, so as to align the foot holes of the automotive steering gear with the positioning columns of the first fixing member and the second fixing member, which is convenient for sleeving the foot holes of the automotive steering gear on the positioning columns. The further limitation of the automotive steering gear is realized through the limiting cap, effectively ensuring the stability of the automotive steering gear. The needle of the dial indicator body contacts the outer circle of the rack in the adjusting plug hole, and a torque is applied to the rack joint at one end of the automotive steering gear by using a torque wrench. Thus, when the rack moves, the dial indicator can measure the value of the meshing clearance, and thus the entire work of detecting the meshing clearance is completed. The general fixture for detecting the meshing clearance of an automotive steering gear has a simple structure, is convenient to adjust, can adapt to automotive steering gears of different lengths, and can also improve the stability of the dial indicator and ensure the accuracy of detecting the meshing clearance. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram when the present utility model is working;

[0015] Figure 2 It is a structural schematic diagram of the dial indicator body and the sleeve in the present utility model;

[0016] Figure 3 This is a partial three-dimensional structural schematic diagram of the dial indicator detection component in the present utility model;

[0017] Figure 4 This is a three-dimensional structural schematic diagram of the fixing part after decomposition in the present utility model.

[0018] In the figure: 1, bottom plate; 2, first slide rail; 3, second slide rail; 4, third slide rail; 5, fourth slide rail; 6, first support plate; 7, second support plate; 8, third support plate; 9, fourth support plate; 10, lower fixing hole; 11, adjusting threaded hole; 12, first screw rod; 13, second screw rod; 14, third screw rod; 15, fourth screw rod; 16, positioning table; 17, assembly hole; 18, upper threaded hole; 19, positioning column; 20, limit cap; 21, dial indicator body; 22, fixing plate; 23, support column; 24, mounting hole; 25, circular platform; 26, collar; 27, sleeve; 28, automotive steering gear; 29, torque wrench. Specific embodiments

[0019] As shown in the appendix Figures 1-4 shown

[0020] The general fixture includes a bottom plate 1. The bottom plate 1 is a rectangular plate. One end of the bottom plate 1 is fixedly installed with a first slide rail 2. A first support plate 6 is slidably installed on the first slide rail 2. The other end of the bottom plate 1 is fixedly installed with a second slide rail 3. A second support plate 7 is slidably installed on the second slide rail 3. A third slide rail 4 is fixedly installed on the bottom plate 1 on one side of the first slide rail 2. A third support plate 8 is slidably installed on the third slide rail 4. A fourth slide rail 5 is fixedly installed on the bottom plate 1 on one side of the second slide rail 3. A fourth support plate 9 is slidably installed on the fourth slide rail 5.

[0021] Referring to the appendix Figure 1 shown, the cross-sections of the first support plate 6, the second support plate 7, the third support plate 8, and the fourth support plate 9 are in a "Z" shape. During operation, by setting the support plates with a "Z" - shaped cross - section, it is convenient for the upper half of the support plate to slide along the axial direction of the slide rail on the slide rail, while the lower half of the support plate can be further fixed on the bottom plate 1.

[0022] Referring to the appendix Figure 1 shown, the lower parts of the first support plate 6, the second support plate 7, the third support plate 8, and the fourth support plate 9 are respectively provided with lower fixing holes 10. Multiple adjusting threaded holes 11 are provided on the bottom plate 1 corresponding to the lower fixing holes 10. A second screw rod 13 is inserted into the lower fixing hole 10 corresponding to the adjusting threaded hole 11. The second screw rod 13 is in threaded connection with the adjusting threaded hole 11. During operation, by the cooperation of the second screw rod 13 and the adjusting threaded hole 11, it is convenient to adjust the position of the support plate, so as to adapt to automotive steering gears 28 of different lengths.

[0023] Referring to the appendixFigures 1-4 As shown, a first fixing member is fixedly installed on the first support plate 6, and a second fixing member is fixedly installed on the second support plate 7. The first fixing member and the second fixing member include a positioning table 16. The cross-section of the positioning table 16 is in a "convex" shape. Assembly holes 17 are respectively arranged at both ends of the positioning table 16. Upper threaded holes 18 are respectively arranged at one ends of the first support plate 6, the second support plate 7, the third support plate 8, and the fourth support plate 9.

[0024] Refer to the appendix Figure 1 As shown, the upper threaded holes 18 of the first support plate 6 and the second support plate 7 are correspondingly arranged with the assembly holes 17. The first screw rod 12 passes through the assembly holes 17 and is threadedly connected to the upper threaded holes 18 of the first support plate 6 and the second support plate 7. During operation, through the threaded cooperation between the first screw rod 12 and the upper threaded holes 18, the positioning table 16 is fixed on the first support plate 6 and the second support plate 7.

[0025] Refer to the appendix Figure 1 and 4 As shown, the top surface of the positioning table 16 is inclined. A positioning column 19 is fixedly installed on the inclined top surface. A limit cap 20 is threadedly installed on the positioning column 19. During operation, the foot hole of the vehicle steering gear 28 can be inserted in cooperation with the positioning column 19, so as to fix the vehicle steering gear 28 through the positioning column 19.

[0026] Refer to the appendix Figures 1-4 As shown, a dial indicator detection assembly is detachably installed on the third support plate 8 and the fourth support plate 9. According to the position of the plug hole of the vehicle steering gear 28, it is selected to be installed on the third support plate 8 or the fourth support plate 9. The dial indicator detection assembly includes a dial indicator body 21 and a fixing plate 22. The fixing plate 22 is a rectangular plate. A support column 23 is fixedly installed on the fixing plate 22. Mounting holes 24 are arranged on the fixing plate 22 on both sides of the support column 23. The mounting holes 24 correspond to the upper threaded holes 18 of the third support plate 8 and the fourth support plate 9. Fourth screw rods 15 are installed in the upper threaded holes 18 of the third support plate 8 and the fourth support plate 9. The fourth screw rods 15 pass through the mounting holes 24 and are threadedly connected to the upper threaded holes 18 of the third support plate 8 and the fourth support plate 9. During operation, through the threaded cooperation between the fourth screw rods 15 and the upper threaded holes 18, the positioning table 16 is fixed on the third support plate 8 and the fourth support plate 9.

[0027] Refer to the appendix Figures 2-3 As shown, a circular platform 25 is fixedly installed on the support column 23. A collar 26 is fixedly installed on the circular platform 25. A third screw rod 14 is threadedly installed on the collar 26. A sleeve 27 is sleeved inside the collar 26. The dial indicator body 21 is fixedly installed inside the sleeve 27. The needle of the dial indicator body 21 extends to the outside of the sleeve 27.

[0028] When the general fixture is in use, first, adjust the distance between the first support plate 6 and the second support plate 7 according to the length of the automotive steering gear 28 in the same batch to adapt to the length of the automotive steering gear 28 in this batch. After the distance between the first support plate 6 and the second support plate 7 is adjusted, then lock the first support plate 6 and the second support plate 7 on the bottom plate 1 through the second screw 13. After the first support plate 6 and the second support plate 7 are locked, align the foot holes of the automotive steering gear 28 with the positioning posts 19 of the first fixing member and the second fixing member, and sleeved the foot holes of the automotive steering gear 28 on the positioning posts 19. After the sleeving is completed, threadedly install a limit cap 20 on the top of the positioning post 19. The limit cap 20 is composed of a bolt and a limit disc. The limit disc is fixedly installed on the circumference of the bolt. The limit cap 20 is used to further limit the automotive steering gear 28, effectively ensuring the stability of the automotive steering gear 28.

[0029] After the automotive steering gear 28 is fixed, fix the dial indicator detection assembly on the third support plate 8 according to the position of the adjusting plug hole of the automotive steering gear 28, and slide the third support plate 8 so that the collar 26 of the dial indicator detection assembly corresponds to the adjusting plug hole. When the collar 26 corresponds to the adjusting plug hole, lock the third support plate 8 through the fourth screw 15. After the third support plate 8 is locked, insert the sleeve 27 equipped with the dial indicator body 21 into the collar 26 so that the needle of the dial indicator body 21 contacts the outer circle of the rack in the adjusting plug hole, and lock the sleeve 27 through the third screw 14, thereby realizing the fixation of the dial indicator body 21. Take the torque wrench 29 and apply torque to the rack joint at one end of the automotive steering gear 28. Thus, when the rack moves, the dial indicator can measure the value of the meshing clearance, and thus complete the work of the entire meshing clearance detection.

[0030] The general fixture for detecting the meshing clearance of the automotive steering gear has a simple structure and is convenient to adjust. It can adapt to automotive steering gears 28 of different lengths, and at the same time can improve the stability of the dial indicator and ensure the accuracy of the meshing clearance detection.

Claims

1. A universal fixture for detecting the meshing clearance of an automobile steering gear, comprising a base plate (1), characterized in that: A first slide rail (2) is fixedly mounted on one end of the bottom plate (1), a first support plate (6) is slidably mounted on the first slide rail (2), a first fixing member is fixedly mounted on the first support plate (6), a second slide rail (3) is fixedly mounted on the other end of the bottom plate (1), a second support plate (7) is slidably mounted on the second slide rail (3), a second fixing member is fixedly mounted on the second support plate (7), a third slide rail (4) is fixedly mounted on the bottom plate (1) on one side of the first slide rail (2), a third support plate (8) is slidably mounted on the third slide rail (4), a fourth slide rail (5) is fixedly mounted on the bottom plate (1) on one side of the second slide rail (3), a fourth support plate (9) is slidably mounted on the fourth slide rail (5), and a dial indicator detection component is detachably mounted on the third support plate (8) and the fourth support plate (9).

2. A universal fixture for detecting the meshing clearance of an automobile steering gear according to claim 1, characterized in that: The first support plate (6), the second support plate (7), the third support plate (8) and the fourth support plate (9) have a "Z"-shaped cross section.

3. The universal fixture for detecting the meshing clearance of a steering gear of an automobile according to claim 1, characterized in that: The first support plate (6), the second support plate (7), the third support plate (8) and the fourth support plate (9) are respectively provided with an upper threaded hole (18) at one end, the upper threaded hole (18) being connected to the fixing member via a first screw rod (12), and the first support plate (6), the second support plate (7), the third support plate (8) and the fourth support plate (9) are respectively provided with a lower fixing hole (10) at the other end.

4. A universal fixture for detecting the meshing clearance of an automobile steering gear according to claim 3, characterized in that: A plurality of adjusting threaded holes (11) are arranged on the bottom plate (1) corresponding to the lower fixing holes (10), a second screw rod (13) is inserted into the lower fixing holes (10) corresponding to the adjusting threaded holes (11), and the second screw rod (13) is threadably connected to the adjusting threaded holes (11).

5. The universal fixture for detecting the meshing clearance of an automobile steering gear according to claim 1, characterized in that: The first fixing member and the second fixing member comprise a positioning platform (16), the positioning platform (16) having a cross section in the shape of a "convex" character, the top surface of the positioning platform (16) being arranged in an inclined manner, a positioning column (19) being fixedly mounted on the inclined top surface, and a limit cap (20) being threadedly mounted on the positioning column (19).

6. The universal fixture for detecting the meshing clearance of a steering gear of an automobile according to claim 1, characterized in that: The dial gauge detection assembly comprises a dial gauge body (21) and a fixing plate (22), the fixing plate (22) being provided with a support column (23), the support column (23) being provided with a circular platform (25), the circular platform (25) being provided with a sleeve (26), the sleeve (26) being provided with a third screw (14), the sleeve (27) being provided inside the sleeve (26), the dial gauge body (21) being provided inside the sleeve (27), and the needle of the dial gauge body (21) extending to the outside of the sleeve (27).

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