Automatic tightening device for automobile shock absorber assembly

Abstract

The automatic tightening device for the automobile shock absorber assembly comprises a base and tightening gun rotating shafts, at least three tightening gun rotating shafts are evenly distributed below the base, a sliding groove is formed in the surface of the base, a traction block is horizontally connected into the sliding groove in a sliding mode, and the traction block is connected with the base in a sliding mode. The bottom of the traction block is rotationally connected with a driving shaft, and the bottom end of the driving shaft is fixedly connected with the top end of the tightening gun rotating shaft. By means of the mode that the first bevel gear drives the three second bevel gears at the same time, three tightening gun rotating shafts can be synchronously driven through one motor so that three nuts can be tightened at the same time, the tightening degrees of the three nuts can be the same, the position of a shock absorber does not need to be manually adjusted or the three nuts do not need to move around the shock absorber, and the working efficiency is improved. And the linear distance from the second bevel gear to the main shaft can be adjusted by adjusting the height of the first bevel gear, so that shock absorbers of different specifications can be conveniently handled.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorber nut tightening technology, specifically an automatic tightening device for automotive shock absorber assemblies. Background Technology

[0002] As an important component of automobiles, the quality of the tightening of the shock absorber nuts and the assembly efficiency have a great impact on automobiles.

[0003] The announcement number "CN218964640U" provides an automatic tightening device for shock absorber nuts. It uses a magnet placed in a groove in the non-fixed end of the tightening sleeve to automatically pick up the shock absorber nut. In the tightening process, after the tightening gun outputs power, it drives the first gear in the gearbox and the second gear meshing with the first gear to rotate in sequence. The second gear drives the movable shaft and the tightening sleeve to rotate, so that the nut in the tightening sleeve can be automatically tightened. This solves the technical problem that the current automotive shock absorber nut tightening usually involves manual pre-tightening followed by manual tightening with a tightening gun, which is inefficient, has high labor costs, and is not conducive to the overall automated production and assembly process.

[0004] However, the above solutions and existing technologies still have the following problems:

[0005] There are at least three nuts evenly distributed on a shock absorber. When tightening these nuts with a tightening gun, they need to be tightened in sequence. This requires the operator to manually adjust the position of the shock absorber or walk around the shock absorber to tighten the nuts. It can also cause the three nuts to be tightened to different degrees. Utility Model Content

[0006] The purpose of this invention is to provide an automatic tightening device for automotive shock absorber assemblies to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic tightening device for automotive shock absorber assemblies includes a base and tightening gun shafts. At least three tightening gun shafts are evenly distributed below the base. The surface of the base is provided with a groove. A traction block is horizontally slidably connected inside the groove. A drive shaft is rotatably connected to the bottom of the traction block. The bottom end of the drive shaft is fixedly connected to the top end of the tightening gun shaft. A main shaft is rotatably connected through the center of the base. The main shaft is connected to the three drive shafts through a transmission structure. A power unit is provided on the top of the base.

[0009] The transmission structure includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly mounted on the surface of the main shaft, and the second bevel gear is fixedly mounted on the surface of the drive shaft. The first bevel gear and the second bevel gear mesh with each other. The pitch cone angle of the first bevel gear and the second bevel gear are both °, and the tooth width of the first bevel gear is twice the tooth width of the second bevel gear.

[0010] Preferably, the power unit includes a bracket, a motor, a splined shaft, and a spline groove. The spline groove is located on the top of the main shaft. The bracket is fixedly installed on the top of the base. The splined shaft is rotatably connected to the bottom of the bracket, and the end of the splined shaft extends into the interior of the spline groove. The motor is fixedly installed on the top of the bracket and connected to the top of the splined shaft.

[0011] Preferably, the inner wall of the chute is provided with an elastic structure, the elastic structure including an elastic element and a guide rod, the guide rod is horizontally fixedly installed on the inner wall of the chute, the traction block is slidably connected to the surface of the guide rod, and the elastic element is disposed inside the chute and connected to the traction block.

[0012] Preferably, the elastic element is a spring, which is fixedly connected between the inner wall of the slide and the traction block, and the spring is sleeved on the surface of the guide rod.

[0013] Preferably, an adjustment plate is rotatably connected to the bottom of the main shaft, and the adjustment plate is fixedly connected to the base by a vertical telescopic rod. A threaded rod is rotatably connected to the top of the adjustment plate, and the top end of the threaded rod passes through and is threaded to the surface of the base. A knob is fixedly installed on the top end of the threaded rod.

[0014] Preferably, a gap of 1cm-2cm is left between the spindle and the base.

[0015] Preferably, at least three of the grooves extend along the radial direction of the base.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model uses a first bevel gear to simultaneously drive three second bevel gears, enabling a single motor to synchronously drive three tightening gun shafts. This allows for the simultaneous tightening of three nuts to the same degree, eliminating the need for manual adjustment of the shock absorber's position or movement around it. Furthermore, by adjusting the height of the first bevel gear, the linear distance from the second bevel gear to the main shaft can be adjusted to accommodate shock absorbers of different specifications. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a top view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the bottom structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the splined shaft and the main shaft of this utility model;

[0022] Figure 5 This is a schematic diagram of the first bevel gear driving the second bevel gear according to this utility model.

[0023] In the diagram: 1. Base; 2. Tightening gun shaft; 3. Slide groove; 4. Traction block; 5. Drive shaft; 6. Main shaft; 7. First bevel gear; 8. Second bevel gear; 9. Bracket; 10. Motor; 11. Splined shaft; 12. Splined groove; 13. Guide rod; 14. Spring; 15. Adjusting plate; 16. Telescopic rod; 17. Threaded rod; 18. Knob. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution: an automatic tightening device for automotive shock absorber assemblies, including a base 1 and three tightening gun shafts 2. Three tightening gun shafts 2 are evenly distributed below the base 1. The surface of the base 1 is provided with a sliding groove 3. The three sliding grooves 3 extend along the radial direction of the base 1. A traction block 4 is horizontally slidably connected inside the sliding groove 3. A drive shaft 5 is rotatably connected to the bottom of the traction block 4. The bottom end of the drive shaft 5 is fixedly connected to the top end of the tightening gun shaft 2. A main shaft 6 is rotatably connected through the center of the base 1. A gap of 1cm-2cm is left between the main shaft 6 and the base 1. The main shaft 6 is connected to the three drive shafts 5 through a transmission structure. A power unit is provided on the top of the base 1.

[0026] In this embodiment, three tightening gun shafts 2 are set. The number of tightening gun shafts 2 is adjusted according to the actual number of nuts on different specifications of shock absorbers, so as to tighten the nuts on different specifications of shock absorbers.

[0027] The transmission structure includes a first bevel gear 7 and a second bevel gear 8. The first bevel gear 7 is fixedly mounted on the surface of the main shaft 6, and the second bevel gear 8 is fixedly mounted on the surface of the drive shaft 5. The first bevel gear 7 and the second bevel gear 8 mesh with each other. The pitch cone angle of the first bevel gear 7 and the second bevel gear 8 is 45°, and the tooth width of the first bevel gear 7 is twice the tooth width of the second bevel gear 8.

[0028] Please see Figure 1 , Figure 2 and Figure 3 The power unit can drive the main shaft 6, so that the main shaft 6 drives the first bevel gear 7 to rotate. The first bevel gear 7 can simultaneously drive the three second bevel gears 8 to rotate, which in turn drives the three drive shafts 5 to rotate. At this time, the three drive shafts 5 can drive the three tightening gun shafts 2 to rotate synchronously, and can tighten the three nuts at the same time, and the tightening degree is the same. When it is necessary to tighten the nuts on the shock absorbers of different specifications, the first bevel gear 7 can be moved upward along the main shaft 6. At this time, the first bevel gear 7 can push the second bevel gear 8 to move outward along the direction of the slide groove 3 to the base 1, so that the tightening gun can adapt to the nuts on the shock absorbers of different specifications.

[0029] It should be noted that the tightening gun shaft 2 is the shaft that transmits power in the tightening gun in the prior art. In this embodiment, after the power unit transmits power to the tightening gun shaft 2, the tightening gun shaft 2 then transmits power to the tightening gun to tighten the nut. The specific structure of the tightening gun and the technical means are well known to those skilled in the art, and will not be described in detail here.

[0030] The power unit includes a bracket 9, a motor 10, a splined shaft 11, and a splined groove 12. The splined groove 12 is located on the top of the main shaft 6. The bracket 9 is fixedly installed on the top of the base 1. The splined shaft 11 is rotatably connected to the bottom of the bracket 9, and the end of the splined shaft 11 extends into the interior of the splined groove 12. The motor 10 is fixedly installed on the top of the bracket 9 and connected to the top of the splined shaft 11.

[0031] Please see Figure 1 and Figure 4 The motor 10 can drive the spline shaft 11 to rotate, and the spline shaft 11 drives the main shaft 6 to rotate through the spline groove 12. The spline shaft 11 can transmit power to the main shaft 6 through the spline groove 12, and the main shaft 6 can translate (i.e., vertically translate) in the axial direction of the spline shaft 11 through the spline groove 12, thus realizing the vertical adjustment of the first bevel gear 7.

[0032] The inner wall of the slide 3 is provided with an elastic structure, which includes an elastic element and a guide rod 13. The guide rod 13 is horizontally fixedly installed on the inner wall of the slide 3. The traction block 4 is slidably connected to the surface of the guide rod 13. The elastic element is set inside the slide 3 and connected to the traction block 4. The elastic element is set as a spring 14. The spring 14 is fixedly connected between the inner wall of the slide 3 and the traction block 4, and the spring 14 is sleeved on the surface of the guide rod 13.

[0033] Please see Figure 1 , Figure 2 and Figure 5 When the position of the first bevel gear 7 moves upward, the first bevel gear 7 can push the drive shaft 5 to move from the side of the second bevel gear 8. At this time, the drive shaft 5 can drive the traction block 4 to move along the axial direction of the guide rod 13 inside the slide groove 3. At this time, the traction block 4 can compress the spring 14 inside the slide groove 3. The spring 14 can drive the traction block 4 to have a tendency to move in the opposite direction through its own elastic force, so that the traction block 4 can drive the second bevel gear 8 to always mesh with the first bevel gear 7, thereby ensuring the drive of the tightening gun by the motor 10.

[0034] An adjustment plate 15 is rotatably connected to the bottom of the main shaft 6. The adjustment plate 15 is fixedly connected to the base 1 by a vertical telescopic rod 16. A threaded rod 17 is rotatably connected to the top of the adjustment plate 15. The top end of the threaded rod 17 passes through and is threaded to the surface of the base 1. A knob 18 is fixedly installed on the top end of the threaded rod 17.

[0035] Please see Figure 1 and Figure 3 The threaded rod 17 can be driven to rotate by rotating the knob 18. When the threaded rod 17 rotates, it will drive the adjusting plate 15 to rotate synchronously. However, the adjusting plate 15 is horizontally fixed to the bottom of the base 1 by the telescopic rod 16. Therefore, when the threaded rod 17 rotates, it can only move vertically on the surface of the base 1. Adjusting the rotation direction of the knob 18 will cause the threaded rod 17 to move upward. At this time, the threaded rod 17 can drive the adjusting plate 15 to move upward synchronously. Meanwhile, the overall length of the telescopic rod 16 is continuously shortening. When the adjusting plate 15 moves upward, it can drive the main shaft 6 to move synchronously on the surface of the spline shaft 11. At this time, the main shaft 6 can drive the first bevel gear 7 to move upward synchronously.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic tightening device for automotive shock absorber assemblies, comprising a base (1) and a tightening gun shaft (2), characterized in that: At least three tightening gun shafts (2) are evenly distributed below the base (1). The surface of the base (1) is provided with a groove (3). A traction block (4) is horizontally slidably connected inside the groove (3). A drive shaft (5) is rotatably connected to the bottom of the traction block (4). The bottom end of the drive shaft (5) is fixedly connected to the top end of the tightening gun shaft (2). A main shaft (6) is rotatably connected through the center of the base (1). The main shaft (6) is connected to the three drive shafts (5) through a transmission structure. A power unit is provided on the top of the base (1). The transmission structure includes a first bevel gear (7) and a second bevel gear (8). The first bevel gear (7) is fixedly mounted on the surface of the main shaft (6), and the second bevel gear (8) is fixedly mounted on the surface of the drive shaft (5). The first bevel gear (7) and the second bevel gear (8) mesh with each other. The pitch cone angle of the first bevel gear (7) and the second bevel gear (8) is 45°, and the tooth width of the first bevel gear (7) is twice the tooth width of the second bevel gear (8).

2. The automatic tightening device for an automotive shock absorber assembly according to claim 1, characterized in that: The power unit includes a bracket (9), a motor (10), a spline shaft (11), and a spline groove (12). The spline groove (12) is located on the top of the main shaft (6). The bracket (9) is fixedly installed on the top of the base (1). The spline shaft (11) is rotatably connected to the bottom of the bracket (9), and the end of the spline shaft (11) extends into the interior of the spline groove (12). The motor (10) is fixedly installed on the top of the bracket (9) and connected to the top of the spline shaft (11).

3. An automatic tightening device for an automotive shock absorber assembly according to claim 1, characterized in that: The inner wall of the chute (3) is provided with an elastic structure, which includes an elastic element and a guide rod (13). The guide rod (13) is horizontally fixedly installed on the inner wall of the chute (3). The traction block (4) is slidably connected to the surface of the guide rod (13). The elastic element is provided inside the chute (3) and connected to the traction block (4).

4. An automatic tightening device for an automotive shock absorber assembly according to claim 3, characterized in that: The elastic element is configured as a spring (14), which is fixedly connected between the inner wall of the slide (3) and the traction block (4), and the spring (14) is sleeved on the surface of the guide rod (13).

5. An automatic tightening device for an automotive shock absorber assembly according to claim 1, characterized in that: The bottom of the main shaft (6) is rotatably connected to an adjustment plate (15). The adjustment plate (15) and the base (1) are fixedly connected by a vertical telescopic rod (16). The top of the adjustment plate (15) is rotatably connected to a threaded rod (17). The top end of the threaded rod (17) passes through and is threaded to the surface of the base (1). A knob (18) is fixedly installed on the top end of the threaded rod (17).

6. An automatic tightening device for an automotive shock absorber assembly according to claim 1, characterized in that: A gap of 1cm-2cm is left between the main shaft (6) and the base (1).

7. An automatic tightening device for an automotive shock absorber assembly according to claim 1, characterized in that: At least three of the grooves (3) extend along the radial direction of the base (1).

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