Anti-following-rotation tool

Abstract

The utility model relates to an anti-following-rotation tool which is used for a frame structure provided with a positioning hole and comprises a tool base, a limiting bolt, a rotating shaft, a connecting plate and a sleeve. The limiting bolt penetrates through the tool base, can slide relative to the tool base and is inserted into the positioning hole; the rotating shaft is fixed to the tool base and perpendicular to the limiting plug pin, the rotating shaft penetrates through the connecting plate so that the connecting plate can rotate and translate relative to the rotating shaft, the sleeve is fixed to the connecting plate, and the axis direction of the sleeve is parallel to the rotating shaft. The sleeve can extend into the narrow position along with rotation and translation of the connecting plate and is attached to the bolt located in the narrow space, and therefore the use requirement under the condition that the installation space is small is met. After fitting is completed, the limiting plug pin perpendicular to the rotating shaft is inserted into the positioning hole of the frame structure, the to-be-tightened bolt, the follow-up rotation preventing tool and the frame structure can be relatively fixed in the circumferential direction of the to-be-tightened bolt, and therefore the effect of preventing follow-up rotation of the bolt is achieved when the nut end is tightened.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle frame assembly tools, and in particular to an anti-rotation tooling. Background Technology

[0002] In the development of new energy vehicles, the torque of key components in the chassis system is generally ≥100Nm. The anti-rotation of fasteners is generally solved by means of projection welding nuts, projection welding bolts, or integrating anti-rotation tooling on the tightening machine.

[0003] However, projection welding has relatively poor maintenance convenience and requires a certain gap between the bolt and the surrounding structure. On the other hand, the method of integrating anti-rotation tooling on the tightening machine has certain requirements for installation space. Therefore, for some frame structures that require certain maintenance convenience and have relatively small installation space, such as the bolt connection between the front link of the rear suspension and the rear subframe, neither of the above two commonly used anti-rotation methods can be applied.

[0004] Currently, for this type of frame structure, most operators need to use an open-end wrench to tighten the bolts and a tightening machine to tighten the nuts. On the one hand, the tightening efficiency is relatively low, and on the other hand, a huge reaction force is generated during the tightening process, which may cause the operator to "not be able to hold" the bolt end. The operator needs to exert a lot of force to hold the bolt, which does not meet the requirements of ergonomics and may even cause injury to the operator if the wrench slips out of their hand. Utility Model Content

[0005] Therefore, it is necessary to provide a tooling solution that offers high maintenance convenience and requires relatively little installation space, addressing the issue that currently used anti-rotation methods are not applicable to chassis structures that require convenient maintenance and have limited installation space.

[0006] This application first provides an anti-rotation fixture for a vehicle frame structure with a positioning hole, including a fixture base, a limiting pin, a rotating shaft, a connecting plate, and a sleeve; the limiting pin passes through the fixture base and can slide relative to the fixture base and be inserted into the positioning hole; the rotating shaft is fixed to the fixture base and perpendicular to the limiting pin, the rotating shaft passes through the connecting plate so that the connecting plate can rotate and translate relative to the rotating shaft, and the sleeve is fixed to the connecting plate and its axial direction is parallel to the rotating shaft.

[0007] In one embodiment, the tooling base includes a contoured surface that is contoured to the frame structure at the location of the positioning hole.

[0008] In one embodiment, the tooling base includes a nylon block and a base plate, the lower surface of the nylon block being the contoured surface, and the upper surface being detachably fixed to the base plate.

[0009] In one embodiment, a pin guide seat is fixed on the base plate, and the limiting pin passes through the pin guide seat, the base plate and the nylon block in sequence, and the limiting pin is slidably connected to the inner wall of the pin guide seat.

[0010] In one embodiment, a pin top plate is fixed to the top of the limiting pin, and the projection of the pin top plate along the axial direction completely covers the inner wall of the pin guide seat.

[0011] In one embodiment, the bottom end of the limiting pin has a chamfer along the circumferential direction.

[0012] In one embodiment, the rotating shaft is fixed to the side of the tooling base by an adapter block, so that the rotating shaft is parallel to the axial direction of the bolt to be tightened on the frame structure.

[0013] In one embodiment, a limiting end cap is detachably fixed to the end of the shaft, the limiting end cap being able to block the connecting plate.

[0014] In one embodiment, the tooling base, the adapter block, the rotating shaft, and the connecting plate are all made of carbon structural steel, and the tooling base, the adapter block, and the rotating shaft are welded and fixed in sequence.

[0015] In one embodiment, the tooling base is disposed on the side of the frame structure away from the bolt to be tightened, and the connecting plate is L-shaped.

[0016] The aforementioned anti-rotation fixture, by fixing the sleeve to the connecting plate and fitting the connecting plate onto the rotating shaft, allows the sleeve to extend into a narrow position as the connecting plate rotates and translates, and to engage with the bolt located in the narrow space, thus meeting the usage requirements when the installation space is small; after engagement, by inserting the limiting pin perpendicular to the rotating shaft into the positioning hole of the frame structure, the bolt to be tightened, the anti-rotation fixture, and the frame structure can be relatively fixed along the circumferential direction of the bolt to be tightened, thereby preventing the bolt from rotating when tightening the nut end. Attached Figure Description

[0017] Figure 1 This is a perspective view of the anti-spinning tooling of this application after it has been installed onto the vehicle frame structure.

[0018] Figure 2 This is a perspective view of the anti-spinning tooling of this application;

[0019] Figure 3 for Figure 2 Top view.

[0020] Reference numerals: 10, tooling base; 11, nylon block; 111, contoured surface; 12, base plate; 13, pin guide seat; 14, adapter block; 20, limiting pin; 21, pin top plate; 30, rotating shaft; 31, limiting end cap; 40, connecting plate; 50, sleeve. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Please combine Figure 1 as well as Figure 2 As shown, this application first provides an anti-rotation tooling for a frame structure with a positioning hole, including a tooling base 10, a limiting pin 20, a rotating shaft 30, a connecting plate 40, and a sleeve 50; the limiting pin 20 passes through the tooling base 10 and can slide relative to the tooling base 10 and be inserted into the positioning hole; the rotating shaft 30 is fixed to the tooling base 10 and is perpendicular to the limiting pin 20, and the rotating shaft 30 passes through the connecting plate 40 so that the connecting plate 40 can rotate and translate relative to the rotating shaft 30; the sleeve 50 is fixed to the connecting plate 40 and its axial direction is parallel to the rotating shaft 30.

[0028] In this application, by fixing the sleeve 50 to the connecting plate 40 and sleeve the connecting plate 40 on the rotating shaft 30, the sleeve 50 can extend into a narrow position as the connecting plate 40 rotates and translates, and fit with the bolt located in the narrow space, thereby meeting the usage requirements when the installation space is small; after the fit is completed, by inserting the limiting pin perpendicular to the rotating shaft 30 into the positioning hole of the frame structure, the bolt to be tightened, the anti-rotation tooling and the frame structure can be relatively fixed in the circumferential direction of the bolt to be tightened, thereby preventing the bolt from rotating when tightening the nut end.

[0029] The specific assembly process is as follows: Place the tooling base 10 in the corresponding position of the frame structure so that the limit pin 20 corresponds to the positioning hole of the frame structure. Rotate and move the connecting plate 40 until the sleeve 50 fits with the bolt to be tightened. Insert the limit pin 20 into the positioning hole to prevent rotation. After the operator tightens the nut end with a tightening machine, remove the limit pin 20. Move and rotate the connecting plate 40 to remove the tooling base 10.

[0030] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, the tooling base 10 includes a contoured surface 111, which is contoured to the frame structure at the location of the positioning hole; the contoured surface 111 can play a positioning role, making it easy for the operator to place the tooling base 10 at the corresponding position of the frame structure.

[0031] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, the tooling base 10 includes a nylon block 11 and a base plate 12. The lower surface of the nylon block 11 is a contoured surface 111, and the upper surface is detachably fixed to the base plate 12.

[0032] The processing cost of the nylon block 11 is relatively low. By setting the contour surface 111 on the nylon block 11, the nylon block 11 with the corresponding contour surface 111 can be manufactured according to different frame structures. In actual use, it is only necessary to fix the corresponding nylon block 11 to the base plate 12 according to the frame structure to be processed, which effectively improves the versatility of the anti-rotation tooling of this application.

[0033] Specifically, the base plate 12 and the nylon block 11 are fixed by bolts so that the nylon block 11 with different contoured surfaces 111 can be replaced to adapt to different frame structures. Of course, other fixing methods can also be used between the two, as long as they can be disassembled as needed.

[0034] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, a pin guide seat 13 is fixed on the base plate 12, and a limiting pin 20 passes through the pin guide seat 13, the base plate 12 and the nylon block 11 in sequence, and the limiting pin 20 is slidably connected to the inner wall of the pin guide seat 13.

[0035] Specifically, the top of the limiting pin 20 is fixed with a pin top plate 21. The projection of the pin top plate 21 along the axial direction completely covers the inner wall of the pin guide seat 13. The pin top plate 21 can play a limiting role in the vertical direction on the one hand, and facilitates the operator's grip and operation on the other hand.

[0036] More specifically, in some embodiments, the bottom end of the limiting pin 20 is chamfered in the circumferential direction to provide a certain guiding function, so as to facilitate the insertion of the limiting pin 20 into the positioning hole.

[0037] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the rotating shaft 30 is fixed to the side of the tooling base 10 by the adapter block 14, so that the rotating shaft 30 is parallel to the axial direction of the bolt to be tightened on the frame structure.

[0038] Preferably, the cross-section of the adapter block 14 is a right trapezoid, with the right-angled side of the trapezoid fixed to the base plate 12 and the hypotenuse fixed to the rotating shaft 30.

[0039] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, a limiting end cap 31 is detachably fixed to the end of the rotating shaft 30, and the limiting end cap 31 can block the connecting plate 40.

[0040] By detachably fixing the limiting end cap 31 to the end of the rotating shaft 30, the operator can remove the connecting plate 40 from the rotating shaft 30 and replace different connecting plates 40 by removing the limiting end cap 31. This allows the anti-rotation tooling of this application to be replaced with different connecting plates 40 according to the different structures of the location of the bolt to be tightened, thereby further improving the versatility of the anti-rotation tooling of this application.

[0041] Specifically, the limiting end cap 31 is fixed to the end of the rotating shaft 30 by bolts.

[0042] In some embodiments, the tooling base 10, the adapter block 14, the rotating shaft 30, and the connecting plate 40 are all made of carbon structural steel, and the tooling base 10, the adapter block 14, and the rotating shaft 30 are welded and fixed in sequence.

[0043] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, the tooling base 10 is disposed on the side of the frame structure away from the bolt to be tightened, the connecting plate 40 is L-shaped, and there is sufficient space on the side of the frame structure away from the bolt to be tightened, which facilitates the installation of the tooling base 10. The L-shaped connecting plate 40 can avoid other parts in the frame structure and extend the sleeve 50 to the location of the bolt to be tightened.

[0044] Of course, in some other embodiments, the setting position of the tooling base 10 and the shape of the connecting plate 40 can be adjusted according to the actual vehicle frame structure, and this application will not give examples of them one by one.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heel-rotation prevention tooling for a vehicle frame structure with positioning holes, characterized in that, It includes a tooling base (10), a limiting pin (20), a rotating shaft (30), a connecting plate (40), and a sleeve (50); The limiting pin (20) passes through the tooling base (10) and can slide relative to the tooling base (10) and be inserted into the positioning hole; The rotating shaft (30) is fixed to the tooling base (10) and perpendicular to the limiting pin (20). The rotating shaft (30) passes through the connecting plate (40) so that the connecting plate (40) can rotate and translate relative to the rotating shaft (30). The sleeve (50) is fixed to the connecting plate (40) and its axial direction is parallel to the rotating shaft (30).

2. The anti-rotation tooling according to claim 1, characterized in that, The tooling base (10) includes a contoured surface (111), which is contoured to the frame structure at the location of the positioning hole.

3. The anti-rotation tooling according to claim 2, characterized in that, The tooling base (10) includes a nylon block (11) and a base plate (12). The lower surface of the nylon block (11) is the contour surface (111), and the upper surface is detachably fixed to the base plate (12).

4. The anti-rotation tooling according to claim 3, characterized in that, A pin guide seat (13) is fixed on the base plate (12). The limiting pin (20) passes through the pin guide seat (13), the base plate (12) and the nylon block (11) in sequence, and the limiting pin (20) is slidably connected to the inner wall of the pin guide seat (13).

5. The anti-rotation tooling according to claim 4, characterized in that, The top of the limiting pin (20) is fixed with a pin top plate (21), and the projection of the pin top plate (21) along the axial direction completely covers the inner wall of the pin guide seat (13).

6. The anti-rotation tooling according to claim 4, characterized in that, The bottom end of the limiting pin (20) has a chamfer along the circumferential direction.

7. The anti-rotation tooling according to claim 3, characterized in that, The rotating shaft (30) is fixed to the side of the tooling base (10) by the adapter block (14) so ​​that the rotating shaft (30) is parallel to the axis direction of the bolt to be tightened on the frame structure.

8. The anti-rotation tooling according to claim 7, characterized in that, The end of the rotating shaft (30) is detachably fixed with a limiting end cap (31), which can block the connecting plate (40).

9. The anti-rotation tooling according to claim 7, characterized in that, The tooling base (10), the adapter block (14), the rotating shaft (30), and the connecting plate (40) are all made of carbon structural steel. The tooling base (10), the adapter block (14), and the rotating shaft (30) are welded and fixed in sequence.

10. The anti-rotation tooling according to claim 1, characterized in that, The tooling base (10) is located on the side of the frame structure away from the bolt to be tightened, and the connecting plate (40) is L-shaped.

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