Anti-following-rotation auxiliary tool for nut

Abstract

The utility model relates to an anti-following rotation assistive device for a nut, which is provided with a limiting hole used for sleeving a hexagon nut, and the shape of the hole wall of the limiting hole is configured to be capable of limiting the hexagon nut to rotate in the limiting hole; the outer wall surface is provided with a plurality of abutting surfaces, the abutting surfaces are sequentially connected end to end to form the annular outer wall surface, and the limiting hole is surrounded by the outer wall surface; when the hexagon nut is matched with the bolt to fasten a fastened part, the hex nut is sleeved with the follow-up rotation preventing assistive device through the limiting hole, the abutting face abuts against a supporting piece used for supporting the fastened part, the supporting piece limits rotation of the follow-up rotation preventing assistive device, and the follow-up rotation preventing assistive device limits rotation of the hexagon nut. The distances between the different abutting faces and the axis of the hexagon nut are different so as to adapt to the situation that the distances between the supporting piece and the axis of the hexagon nut are different. The following rotation prevention assistive device can prevent the nut from rotating along with the bolt, and is simple and small in structure, convenient to carry and convenient to operate.

Description

Technical Field

[0001] The utility model relates to a bolt tightening auxiliary structure technology field, in particular to an anti-rotation auxiliary device for nuts. Background Art

[0002] Tower cranes, also known as "tower cranes," are a type of lifting equipment commonly used on construction sites. They are used to lift construction materials such as rebar, wood planks, concrete, and steel pipes. The standard sections of a tower crane are fastened together using bolts and nuts. To tighten the bolts and nuts, a box-end wrench or open-end spanner is first used to tighten the nut to prevent it from rotating with the bolt. An electric wrench is then used to tighten the bolt against the nut. Box-end wrenches and open-end spanners are large and heavy, making them difficult to carry. Furthermore, tightening the bolts requires one hand to operate the box-end wrench or open-end spanner while the other hand operates the electric wrench, making it inconvenient. Utility Model Content

[0003] Based on the above-mentioned defects in the prior art, the purpose of the utility model is to provide an anti-rotation aid for nuts, which can prevent the nut from rotating along with the bolt. It has a simple and compact structure and is easy to carry. Users do not need to manually operate the anti-rotation aid when tightening the bolt with an electric tool, and the operation is convenient.

[0004] To this end, the present invention provides the following technical solutions.

[0005] The utility model provides an anti-rotation auxiliary tool for a nut, the anti-rotation auxiliary tool having:

[0006] A limiting hole for receiving a hexagonal nut, wherein the shape of the hole wall of the limiting hole is configured to limit the rotation of the hexagonal nut in the limiting hole;

[0007] An outer wall surface having a plurality of abutment surfaces, wherein the plurality of abutment surfaces are sequentially connected end to end to form an annular outer wall surface, and the outer wall surface surrounds the limiting hole;

[0008] When the hexagonal nut and the bolt cooperate to tighten the fastened component, the anti-rotation tool is sleeved on the hexagonal nut through the limiting hole, and the abutting surface abuts against a support member for supporting the fastened component. The support member limits the rotation of the anti-rotation tool, and the anti-rotation tool limits the rotation of the hexagonal nut.

[0009] The distances between different abutment surfaces and the axis of the hexagonal nut are different to adapt to scenarios in which the distances between the support member and the axis of the hexagonal nut are different.

[0010] Optionally, the abutting surface is a plane.

[0011] Optionally, the hole wall of the limiting hole includes a limiting plane, and the limiting plane is in contact with and pressed against the circumferential surface of the hexagonal nut to limit the rotation of the hexagonal nut in the limiting hole.

[0012] Optionally, the cross-section of the hole wall of the limiting hole is a regular hexagon, which has six limiting planes, and the six limiting planes respectively abut against the six circumferential surface walls of the hexagonal nut one by one.

[0013] Optionally, the cross section of the outer wall is hexagonal, and has six abutment surfaces in a planar structure, and the six abutment surfaces are arranged parallel to the six limiting planes one by one;

[0014] The distances between the six groups of mutually parallel abutting surfaces and the limiting plane are different, so that the distances between different abutting surfaces and the axis of the hexagonal nut are different.

[0015] Optionally, the wall thicknesses of the six side walls of the anti-rotation auxiliary device increase sequentially along the circumference of the limiting hole.

[0016] Optionally, the difference in wall thickness between two adjacent side arms is greater than or equal to 15 mm.

[0017] Optionally, the limiting hole is a through hole.

[0018] Optionally, the limiting hole includes a first hole segment and a second hole segment with different cross-sectional sizes to accommodate hexagonal nuts of two different sizes.

[0019] Optionally, a lifting ring is provided on one end surface of the anti-rotation auxiliary device.

[0020] The utility model has the following technical effects:

[0021] The utility model provides an anti-rotation aid. The anti-rotation aid is provided with a limit hole to limit the rotation of the hexagonal nut following the bolt. Moreover, by limiting the distances between different abutting surfaces of the outer wall and the axis of the hexagonal nut to be different, it adapts to scenarios with different distances between the axis of the support member and the hexagonal nut, thereby expanding the application range of the anti-rotation aid. The anti-rotation aid of this solution has a simple and compact structure and is easy to carry. Moreover, the user does not need to manually operate the anti-rotation aid when tightening the bolt with an electric tool, making it easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the anti-heel rotation auxiliary device in the first embodiment of the present utility model;

[0023] Figure 2 This is a top view of the anti-heel rotation assistive device in the first embodiment of the present invention;

[0024] Figure 3This is a structural relationship diagram of various components of the anti-rotation auxiliary device in the first embodiment of the present invention in an anti-rotation application scenario;

[0025] Figure 4 This is a cross-sectional view of the structure of each component of the anti-rotation auxiliary device in the first embodiment of the present invention in the anti-rotation application scenario;

[0026] Figure 5 This is an exploded schematic diagram of the structure of each component of the anti-rotation auxiliary device in the first embodiment of the present invention in the anti-rotation application scenario;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the anti-heel rotation auxiliary device in the second embodiment of the present invention. Figure 1 ;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the anti-heel rotation auxiliary device in the second embodiment of the present invention. Figure 2 .

[0029] Description of Reference Numerals

[0030] 1. Anti-heel rotation assistive device;

[0031] 11. Limiting hole; 111. Limiting plane; 112. First hole section; 113. Second hole section; 12. Abutting surface; 13. Lifting ring;

[0032] 2. Hexagonal nut;

[0033] 3. Bolts;

[0034] 4. Fastened parts;

[0035] 5. Support parts. DETAILED DESCRIPTION

[0036] To make the technical solutions and beneficial effects of the present invention more clearly understood, the following describes the present invention in detail by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0037] In the description of the present invention, unless otherwise expressly defined, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description of the present invention, and do not indicate that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation to the present invention.

[0038] In this utility model, the terms "first" and "second" are used solely for descriptive clarity and should not be construed as indicating the relative importance of the features indicated or the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, and "several" means at least one, unless expressly specified otherwise.

[0039] In this utility model, unless otherwise expressly defined, the terms "install," "connect," "connect," "fix," "dispose," etc. should be understood broadly. For example, "connection" can mean fixed connection, detachable connection, or integral molding; it can be mechanical or electrical; it can be direct connection or indirect connection through an intermediary; it can also refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0040] In the present invention, unless otherwise clearly defined, when a first feature is “on,” “above,” “above,” “above,” “below,” “below,” or “below” a second feature, the first feature and the second feature may be in direct contact, or the first feature and the second feature may be in indirect contact via an intermediate medium. Moreover, when a first feature is “on,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0041] The following is based on Figures 1 to 7 The anti-heel rotation auxiliary device of the utility model is described in detail.

[0042] In this embodiment, if Figures 1 to 5 As shown, the anti-rotation aid 1 has a limiting hole 11 and an outer wall. The limiting hole 11 is configured to be sleeved onto the outer periphery of the hexagonal nut 2. The shape of the hole wall of the limiting hole 11 is configured to restrict the rotation of the hexagonal nut 2 within the limiting hole 11. The outer wall has multiple abutment surfaces 12, which are connected end to end to form an annular outer wall. The outer wall surrounds the limiting hole 11, and the distances between different abutment surfaces 12 and the axis of the hexagonal nut 2 are different.

[0043] When the hexagonal nut 2 and the bolt 3 are used to tighten the fastened component 4, first, according to the size of the distance between the support member 5 for supporting the fastened component 4 and the axis of the hexagonal nut 2, the corresponding abutting surface 12 is selected to be opposite to the support member 5, and then the anti-rotation aid 1 is sleeved on the outer periphery of the hexagonal nut 2 through the limiting hole 11. At this time, the abutting surface 12 abuts against the support member 5, and the anti-rotation aid 1 is limited to rotate by the surface-to-surface abutment or surface-line abutment between the support member 5 and the abutting surface 12. In this way, during the process of tightening the bolt 3 with the power tool, since the anti-rotation aid 1 will not rotate, the anti-rotation aid 1 can limit the rotation of the hexagonal nut 2 through the limiting hole 11.

[0044] By adopting the above technical solution, the anti-rotation aid 1 is provided with a limiting hole 11 to restrict the hexagonal nut 2 from rotating with the bolt 3. Moreover, by limiting the spacing between different abutting surfaces 12 of the outer wall and the axis of the hexagonal nut 2 to different distances, it adapts to scenarios with different spacings between the support member 5 and the axis of the hexagonal nut 2, thereby expanding the application range of the anti-rotation aid 1. The anti-rotation aid 1 of this solution has a simple and compact structure and is easy to carry. Moreover, the user does not need to manually operate the anti-rotation aid 1 when using the power tool, making it easy to operate.

[0045] When the anti-rotation aid 1 of this solution is applied to a high tower crane, the standard section of the crane includes a vertical rod and a connecting sleeve arranged on the outside of the vertical rod. The vertical rod is the support member 5, and the connecting sleeve is the fastened component 4. When two adjacent standard sections are assembled together, the two connecting sleeves are aligned in the vertical direction, the bolts 3 are passed through the two connecting sleeves in turn, the hexagonal nuts 2 are put on the outer periphery of the bolts 3, and then the anti-rotation aid 1 is put on the outer periphery of the hexagonal nuts 2. The bolts 3 are tightened with an electric tool, and the anti-rotation aid 1 is removed after tightening is completed.

[0046] Of course, the supporting member 5 and the fastened component 4 can be two independent components or an integrated structure.

[0047] In one embodiment, if Figures 1 to 5 As shown, the abutment surface 12 is a plane, and the surface wall of the support member 5 (such as the vertical rod of the standard section of the tower crane) that is usually used to support the fastened component 4 is a plane. The abutment surface 12 abuts against the plane surface wall of the support member 5, and the abutment is stable and not easy to slip.

[0048] In one embodiment, if Figures 1 to 4 As shown, the hole wall of the limiting hole 11 includes a limiting plane 111, which is in contact with and tightly abuts against the circumferential surface of the hexagonal nut 2 to limit the rotation of the hexagonal nut 2 in the limiting hole 11. The limiting plane 111 can be one, two, or even more.

[0049] Furthermore, the cross-section of the hole wall of the limiting hole 11 is a regular hexagon, and the hole wall of the limiting hole 11 has six limiting planes 111. The six limiting planes 111 are respectively against the six circumferential walls of the hexagonal nut 2. In this way, each circumferential wall of the hexagonal nut 2 is limited by the hole wall of the limiting hole 11, ensuring the limiting stability.

[0050] Furthermore, the cross-section of the outer wall is hexagonal, and the outer wall has six planar abutment surfaces 12, and the six abutment surfaces 12 are arranged parallel to the six limiting planes 111. There is a spacing between the abutment surfaces 12 and the limiting planes 111 arranged in parallel, and the spacing between the six groups of mutually parallel abutment surfaces 12 and the limiting planes 111 is different, that is, the wall thicknesses of the six side walls of the anti-rotation aid 1 are different, so that the spacings between different abutment surfaces 12 and the axis of the hexagonal nut 2 are different. By limiting the anti-rotation aid 1 to have different side arm wall thicknesses to adapt to scenarios with different spacings between the support member 5 and the axis of the hexagonal nut 2, the anti-rotation aid 1 has a simple structure and is easy to process.

[0051] Furthermore, if Figure 2 As shown, the thicknesses of the six side walls of the anti-heel rotation aid 1 increase sequentially along the circumference of the limiting hole 11 , so that the user can quickly select the matching abutting surface 12 to face the support member 5 .

[0052] Furthermore, the thickness difference between two adjacent side arms is greater than or equal to 15 mm. In addition, in order to facilitate the user to understand the thickness difference of the side arms of the anti-rotation assistive device 1, the thickness difference between any two adjacent side arms is the same.

[0053] In one embodiment, if Figure 1 As shown, the limiting hole 11 is a through hole, so that the user can align the anti-rotation auxiliary device 1 and the hexagonal nut 2.

[0054] In one embodiment, if Figure 6 and Figure 7 As shown, the limiting hole 11 includes a first hole section 112 and a second hole section 113. The cross-sectional dimension of the first hole section 112 is larger than that of the second hole section 113. The first hole section 112 and the second hole section 113 are respectively adapted to two different sized hexagonal nuts 2. When the hexagonal nut 2 is adapted to the first hole section 112, the first hole section 112 of the anti-rotation aid 2 is aligned with the hexagonal nut 2 and then sleeved. When the hexagonal nut 2 is adapted to the second hole section 113, the second hole section 113 of the anti-rotation aid 2 is aligned with the hexagonal nut 2 and then sleeved.

[0055] In one embodiment, if Figure 1 As shown, a lifting ring 13 is provided on one end surface of the anti-rotation auxiliary device 1, and the lifting ring 13 is used to pass a rope or a buckle to assist in carrying and prevent it from falling from a high altitude.

[0056] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations of the claims. Various modifications and variations may be made to the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form additional embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments merely represent several implementations of the present invention and do not limit the scope of protection of the present utility model patent.

Claims

1. A nut anti-rotation auxiliary device, characterized in that: The anti-heeling assistive device (1) comprises: A limiting hole (11) for receiving a hexagonal nut (2), wherein the shape of the hole wall of the limiting hole (11) is configured to limit the rotation of the hexagonal nut (2) in the limiting hole (11); An outer wall surface having a plurality of abutment surfaces (12), wherein the plurality of abutment surfaces (12) are sequentially connected end to end to form an annular outer wall surface, and the outer wall surface surrounds the limiting hole (11); Wherein, when the hexagonal nut (2) and the bolt (3) cooperate to tighten the fastened component (4), the anti-rotation auxiliary device (1) is sleeved on the hexagonal nut (2) through the limiting hole (11), and the abutting surface (12) abuts against the support member (5) for supporting the fastened component (4), the support member (5) limits the rotation of the anti-rotation auxiliary device (1), and the anti-rotation auxiliary device (1) limits the rotation of the hexagonal nut (2); The distances between different abutment surfaces (12) and the axis of the hexagonal nut (2) are different, so as to adapt to scenarios in which the distances between the support member (5) and the axis of the hexagonal nut (2) are different.

2. The anti-rotation auxiliary device for nuts according to claim 1, characterized in that: The abutting surface (12) is a plane.

3. The anti-rotation auxiliary device for nuts according to claim 1, characterized in that: The hole wall of the limiting hole (11) includes a limiting plane (111), and the limiting plane (111) is in contact with and pressed against the circumferential surface of the hexagonal nut (2) to limit the rotation of the hexagonal nut (2) in the limiting hole (11).

4. The anti-rotation auxiliary device for nuts according to claim 3, characterized in that: The cross section of the hole wall of the limiting hole (11) is a regular hexagon, and it has six limiting planes (111). The six limiting planes (111) respectively abut against the six circumferential surface walls of the hexagonal nut (2).

5. The anti-rotation auxiliary device for nuts according to claim 4, characterized in that: The cross section of the outer wall is hexagonal, and has six abutment surfaces (12) in a planar structure, and the six abutment surfaces (12) are arranged parallel to the six limiting planes (111); The spacings between the six groups of mutually parallel abutment surfaces (12) and the limiting plane (111) are different, so that the spacings between different abutment surfaces (12) and the axis of the hexagonal nut (2) are different.

6. The anti-rotation auxiliary device for nuts according to claim 5, characterized in that: The wall thicknesses of the six side walls of the anti-heel rotation auxiliary device (1) increase sequentially along the circumference of the limiting hole (11).

7. The anti-rotation auxiliary device for nuts according to claim 6, characterized in that: The difference in wall thickness between two adjacent side arms is greater than or equal to 15mm.

8. The anti-rotation auxiliary device for nuts according to any one of claims 1 to 7, characterized in that: The limiting hole (11) is a through hole.

9. The anti-rotation auxiliary device for nuts according to any one of claims 1 to 7, characterized in that: The limiting hole (11) comprises a first hole section (112) and a second hole section (113) having different cross-sectional dimensions, so as to be adapted to two hexagonal nuts (2) of different dimensions.

10. The anti-rotation auxiliary device for nuts according to any one of claims 1 to 7, characterized in that: A lifting ring (13) is provided on one end surface of the anti-rotation auxiliary tool (1).

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