Integrated anti-loosening nut for transmission tower

Abstract

The utility model discloses an integrated anti-loose nut for a transmission tower, which comprises a first nut and a second nut, the first nut comprises a first main body, an eccentric boss arranged at one end of the first main body and a first screw hole penetrating through the eccentric boss and the first main body; the central axis of the first main body is eccentrically arranged with the central axis of the eccentric boss and coincides with the central axis of the first screw hole; the second nut comprises a second main body, a second screw hole extending from one end of the second main body to the inner side and an eccentric hole extending from the other end of the second main body to the inner side to be communicated with the second screw hole, and the central axis of the second main body is eccentrically arranged with the central axis of the eccentric hole and coincides with the central axis of the second screw hole; wherein the inner diameters and the thread parameters of the two screw holes are the same, the eccentric hole is matched with the eccentric boss, a wedge-shaped groove is formed in the first screw hole and / or the second screw hole, and a ball is arranged in the wedge-shaped groove. The anti-loosening device has the advantages of being convenient to install, low in cost, good in anti-loosening effect and stable in performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transmission and transformation engineering, and particularly relates to an integrated anti-loosening nut for a power transmission tower. Background Art

[0002] Due to the dispersion of power sources, many lines in power grid facilities are located in sparsely populated areas, making maintenance inconvenient; although relevant departments have increased maintenance investment, due to the geographical location of the power transmission line site, the long lines, and other characteristics, especially the current power grid construction has always lagged behind the power source construction, and once the power grid facilities have problems, distribution network failures will follow. Therefore, in the construction of power grid facilities, the anti-theft and anti-loosening of the connections between the components are particularly important.

[0003] Power transmission and transformation facilities such as iron towers and power transformers are often subject to changing wind loads, and the working environment temperature changes greatly; in some areas, parts on iron towers are often stolen and damaged. Therefore, reliable measures must be taken to prevent nuts from loosening.

[0004] In the related art, there are two common solutions. First, when connecting by bolts, ordinary threads of single or double nuts are used to meet the self-locking conditions, and the friction between the supporting surfaces such as the nut and the bolt head has an anti-loosening effect; second, anti-disassembly bolts such as ball-type and anti-theft caps are mainly used.

[0005] In the first option, when the static load and working temperature do not change much, the connection will generally not loosen, but when there is impact, vibration, variable load and large temperature changes, the connection may loosen, and it cannot prevent human theft and unloading; in the second option, due to structural limitations, it does not have anti-loosening performance. In order to meet the anti-unloading and anti-loosening requirements, it needs to be used in combination with other anti-loosening measures, which not only increases the cost, but also makes the installation more troublesome and the anti-loosening performance unstable.

[0006] Therefore, the anti-loosening nut in the related art has technical problems such as inconvenient installation, high cost, poor anti-loosening effect and unstable performance. Utility Model Content

[0007] In order to solve the technical problems of inconvenient installation, high cost, poor anti-loosening effect and unstable performance of existing locking nuts in the related technology mentioned in the above background technology, the purpose of the utility model is to provide an integrated anti-loosening nut for transmission tower.

[0008] The utility model is realized by the following technical solutions:

[0009] An integrated anti-loosening nut for a transmission tower, comprising:

[0010] A first nut, the first nut comprising a first body, an eccentric boss provided at one end of the first body, and a first screw hole penetrating the eccentric boss and the first body, wherein a central axis of the first body is eccentrically arranged with a central axis of the eccentric boss and coincides with a central axis of the first screw hole;

[0011] a second nut, the second nut comprising a second body, a second screw hole extending inwardly from one end of the second body, and an eccentric hole extending inwardly from the other end of the second body to communicate with the second screw hole, wherein the central axis of the second body is eccentrically arranged with the central axis of the eccentric hole and coincides with the central axis of the second screw hole;

[0012] Among them, the inner diameters of the first screw hole and the second screw hole are equal and their thread parameters are the same, the outer diameter of the eccentric boss is larger than the inner diameter of the first screw hole, the inner diameter of the eccentric hole is larger than the inner diameter of the second screw hole, the eccentric hole and the eccentric boss are adapted, and a wedge-shaped groove is provided in the first screw hole and / or the second screw hole, and a ball is provided in the wedge-shaped groove.

[0013] Optionally, the wedge-shaped groove extends circumferentially along the inner wall of the first screw hole or the second screw hole, and when the first nut or the second nut is screwed into the mating bolt in the forward direction, the ball is squeezed to the deeper end of the wedge-shaped groove, and when the first nut or the second nut is screwed out of the mating bolt in the reverse direction, the ball is squeezed to the shallower end of the wedge-shaped groove, and when the ball is located at the shallower end of the wedge-shaped groove, at least part of the contour of the ball protrudes outside the wedge-shaped groove.

[0014] Optionally, the wedge-shaped groove is provided in the first screw hole, and the wedge-shaped groove is not provided in the second screw hole; or the wedge-shaped groove is provided in the second screw hole, and the wedge-shaped groove is not provided in the first screw hole.

[0015] Optionally, the ball is made of steel.

[0016] Optionally, the first body and the second body have the same outer contour and the same outer diameter.

[0017] Optionally, the sum of the height of the first body and the height of the eccentric boss is greater than the height of the second body.

[0018] Optionally, the height of the first body is equal to the height of the second body.

[0019] Optionally, the outer contours of the first body and the second body are in the shape of hexagonal nuts.

[0020] Optionally, the depth of the eccentric hole is greater than the height of the eccentric boss.

[0021] Optionally, both the first body and the second body are provided with indicator marks, and the indicator marks are used to indicate the up and down directions of the relative positions of the first nut and the second nut, and to judge the relative torsion angle between the first nut and the second nut according to the relative offset position of the indicator line.

[0022] The beneficial effects of the utility model are as follows: the integrated anti-loosening nut for transmission pole tower of the utility model solves the technical problems of inconvenient installation, high cost, poor anti-loosening effect and unstable performance of the existing locking nuts in the prior art, and achieves the following beneficial effects: 1) through the split design of the first nut and the second nut and the eccentric structure design of the first nut and the second nut, when in use, the eccentric structure of the first nut and the second nut cooperates to achieve stable and effective locking after installation, prevent loosening after locking, and improve the anti-loosening performance; 2) through the ingenious structure of the wedge groove matching the ball in the first nut and / or the second nut, the first nut and the second nut can be locked stably and effectively after installation, and the loosening after locking can be prevented, thereby improving the anti-loosening performance; When the first nut and the second nut are locked with the bolt, they can be smoothly rotated to achieve locking. When disassembling, the wedge groove and the ball structure can lock the nut on the bolt to prevent disassembly, and have good anti-disassembly performance; 3) From the mechanical and structural perspectives, the combination of the nut anti-disassembly function and the anti-loosening function is completed, and the dependence of the anti-loosening performance on the axial preload of the bolt is avoided, the anti-loosening durability of the bolt is improved, and the good anti-disassembly and anti-loosening functions of the bolt are integrated into a design, making the anti-loosening nut easy to install and lower in cost; 4) By adapting the size of the eccentric boss and the eccentric hole of the first nut and the second nut, the performance of the anti-loosening nut is more stable after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a top view of an integrated anti-loosening nut for a transmission tower according to an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 Sectional view of AA.

[0026] Among them, 1. first main body; 2. eccentric boss; 3. first screw hole; 4. wedge-shaped groove; 5. ball; 6. second main body; 7. eccentric hole; 8. second screw hole. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0028] In the description of the embodiments of the present invention, it needs to be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0029] Below, refer to Figure 1-2 The integrated anti-loosening nut for a transmission pole tower according to an embodiment of the utility model is described in detail.

[0030] like Figure 1-2 As shown, a transmission tower integrated anti-loosening nut includes a first nut and a second nut, the first nut includes a first body 1, an eccentric boss 2 provided at one end of the first body 1, and a first screw hole 3 penetrating the eccentric boss 2 and the first body 1, the central axis of the first body 1 is eccentrically arranged with the central axis of the eccentric boss 2 and coincides with the central axis of the first screw hole 3; the second nut includes a second body 6, a second screw hole 8 extending inwardly from one end of the second body 6, and a second screw hole 8 extending inwardly from the other end of the second body 6 to coincide with the central axis of the eccentric boss 2. The eccentric hole 7 is connected to the second screw hole 8, and the central axis of the second body 6 is eccentrically arranged with the central axis of the eccentric hole 7 and coincides with the central axis of the second screw hole 8; wherein the inner diameters of the first screw hole 3 and the second screw hole 8 are equal and their thread parameters are the same, the outer diameter of the eccentric boss 2 is larger than the inner diameter of the first screw hole 3, the inner diameter of the eccentric hole 7 is larger than the inner diameter of the second screw hole 8, the eccentric hole 7 and the eccentric boss 2 are adapted, and a wedge groove 4 is provided in the first screw hole 3 and / or the second screw hole 8, and a ball 5 is provided in the wedge groove 4.

[0031] It should be noted that the first body 1 is the nut body of the first nut, and the second body 6 is the nut body of the second nut. The first body 1 and the second body 6 can be nuts of the same model, and can be non-standard nuts or standard nuts. For example, they can be the nut shape of a standard hexagonal nut. When the first body 1 and the second body 6 are the nut bodies of standard nuts, the inner diameter of the screw holes and the thread parameters in the first screw hole 3 and the second screw hole 8 correspond to the standard parameters; when the first body 1 and the second body 6 are the nut bodies of non-standard nuts, the inner diameter of the screw holes and the thread parameters in the first screw hole 3 and the second screw hole 8 correspond to the parameters of the bolts connected thereto. For example, the outer contours of the first body 1 and the second body 6 are hexagonal nut shapes.

[0032] In this embodiment, the first nut can be a lower nut, and the second nut can be an upper nut. During production, the first nut and the second nut are produced as an integral part, so that the eccentric boss 2 is embedded in the eccentric hole 7, but the first nut and the second nut can rotate relative to each other. During assembly, the first nut and the second nut are screwed into the matching bolts. After the two nuts are tightened, the first nut is kept stationary, and the second nut is rotated 60 degrees in the positive direction to complete the self-locking. Here, the first nut and the second nut are set as an integral part, that is, the first body 1 and the second body 6 can be connected as a whole, or the eccentric boss 2 and the eccentric hole 7 are connected so that the first nut and the second nut are connected as a whole, but the first nut and the second nut can rotate relative to each other, thereby realizing the integration of the first nut and the second nut.

[0033] In this embodiment, the eccentricity between the central axis of the eccentric boss 2 and the central axis of the first body 1 can be the same as the eccentricity between the central axis of the eccentric hole 7 and the central axis of the second body 6. In order to enable the first nut and the second nut to rotate during installation, the shapes of the eccentric boss 2 and the eccentric hole 7 are both circular. The thickness of the first body 1, the thickness of the second body 6, the height of the eccentric boss 2, and the depth of the eccentric hole 7 can all be set according to the specific scene to meet the strength requirements of the first nut and the second nut. The wedge groove 4 (i.e., the V-shaped groove) can extend along the inner wall of the first screw hole 3 or the second screw hole 8, and the ball 5 is arranged in the wedge groove 4 and can slide in the wedge groove 4, so that when the nut is rotated forward and reversely, the ball 5 is squeezed to different ends of the wedge groove 4, thereby achieving the jamming of the nut and achieving anti-disassembly.

[0034] In this embodiment, the wedge groove 4 can be set only in the first screw hole 3, or only in the second screw hole 8, or the wedge groove 4 can be set in both the first screw hole 3 and the second screw hole 8, thereby achieving anti-removal of the first nut or the second nut, or achieving anti-removal of the first nut and the second nut at the same time.

[0035] Therefore, through the split design of the first nut and the second nut and the eccentric structure design of the first nut and the second nut, the eccentric structure of the first nut and the second nut is cooperated during use to achieve stable and effective locking after installation, prevent loosening after locking, and improve the anti-loosening performance; by designing the ingenious structure of the wedge groove 4 and the ball 5 in the first nut and / or the second nut, it is achieved that when the first nut and the second nut are locked with the bolt, they can be smoothly rotated to achieve locking, and when disassembled, the wedge groove 4 and the ball 5 structure can clamp the nut on the bolt to prevent disassembly, and has good anti-disassembly performance; from the mechanical and structural perspectives, the combination of the nut anti-disassembly function and the anti-loosening function is completed, and the dependence of the anti-loosening performance on the axial preload of the bolt is avoided, the anti-loosening durability of the bolt is improved, and the good anti-disassembly and anti-loosening functions of the bolt are integrated, so that the anti-loosening nut is easy to install and has a lower cost of use; through the size adaptation design of the eccentric boss 2 and the eccentric hole 7 of the first nut and the second nut, the performance of the anti-loosening nut is more stable after installation.

[0036] In one embodiment, the wedge-shaped groove 4 extends circumferentially along the inner wall of the first screw hole 3 or the second screw hole 8. When the first nut or the second nut is screwed into the matching bolt in the forward direction, the ball 5 is squeezed to the deeper end of the wedge-shaped groove 4. When the first nut or the second nut is screwed out of the matching bolt in the reverse direction, the ball 5 is squeezed to the shallower end of the wedge-shaped groove 4. When the ball 5 is located at the shallower end of the wedge-shaped groove 4, at least part of the outline of the ball 5 protrudes outside the wedge-shaped groove 4. In this way, when the nut is rotated in the forward and reverse directions, the thread on the bolt squeezes the ball 5 at different ends in the wedge-shaped groove 4. When the ball 5 is located at the shallow end of the wedge-shaped groove 4, the nut is stuck. When the ball 5 is located at the deep end of the wedge-shaped groove 4, the nut moves, thereby achieving the goal of sticking the nut on the bolt when the nut is disassembled to prevent disassembly, and having good anti-disassembly performance.

[0037] Here, the ball 5 can be made of steel, or other hard and rust-resistant materials.

[0038] In one embodiment, the wedge-shaped groove 4 is provided in the first screw hole 3, and the wedge-shaped groove 4 is not provided in the second screw hole 8; or the wedge-shaped groove 4 is provided in the second screw hole 8, and the wedge-shaped groove 4 is not provided in the first screw hole 3. When the wedge-shaped groove 4 is provided in one of the screw holes, it can not only prevent the nut from being disassembled, but also reduce the material cost and installation cost, thereby reducing the cost of the entire device. In this embodiment, preferably, the wedge-shaped groove 4 is provided only in the first screw hole 3.

[0039] In one embodiment, the outer contours of the first body 1 and the second body 6 are the same and their outer diameters are equal. The sum of the height of the first body 1 and the height of the eccentric boss 2 is greater than the height of the second body 6. The height of the first body 1 and the height of the second body 6 can be equal, or the heights of the first body and the second body can be adjusted according to the actual application, so that the heights of the first body and the second body are different to adapt to the installation scenario. The depth of the eccentric hole 7 is greater than the height of the eccentric boss 2. Therefore, by adapting the size of the eccentric boss 2 and the eccentric hole 7 of the first nut and the second nut, the performance of the anti-loosening nut is more stable after installation. At the same time, from the mechanical and structural perspectives, the combination of the nut anti-loosening function and the anti-loosening function is completed, and the anti-loosening performance is avoided. The dependence of the anti-loosening performance on the axial preload of the bolt is avoided, the anti-loosening durability of the bolt is improved, and the good anti-loosening and anti-loosening functions of the bolt are integrated, so that the anti-loosening nut is easy to install and has a lower cost of use.

[0040] In one embodiment, both the first body 1 and the second body 6 are provided with an indicator mark, which is used to indicate the up-down direction of the relative position of the first nut and the second nut, and to judge the relative torsion angle between the first nut and the second nut according to the relative displacement position of the indicator line. Here, the indicator mark can be an arrow indicator mark, thereby indicating the up-down direction of the relative position of the double nuts to the construction personnel, and at the same time, when tightening the second nut, the torsion angle can be judged according to the relative displacement position of the indicator line, which is more convenient and conducive to fast and safe construction.

[0041] Therefore, the integrated anti-loosening nut for the transmission pole tower provided in this embodiment solves the technical problems of inconvenient installation, high cost, poor anti-loosening effect and unstable performance of the existing locking nuts in the existing related technologies, and achieves beneficial effects: 1) Through the split design of the first nut and the second nut and the eccentric structure design of the first nut and the second nut, when in use, the eccentric structure of the first nut and the second nut cooperates to achieve stable and effective locking after installation, prevent loosening after locking, and improve the anti-loosening performance; 2) Through the ingenious structure of the wedge groove 4 and the ball 5 designed in the first nut and / or the second nut, it is achieved that when the first nut and the second nut are locked with the bolt, they can be smoothly rotated to achieve locking, and when disassembled, the wedge groove 4 and the ball 5 structure can lock the nut. On the bolt, it prevents disassembly and has good anti-disassembly performance; 3) From the mechanical and structural perspectives, it completes the combination of the nut anti-disassembly function and the anti-loosening function, and avoids the dependence of the anti-loosening performance on the axial preload of the bolt, improves the anti-loosening durability of the bolt, and integrates the good anti-disassembly and anti-loosening functions of the bolt, so that the anti-loosening nut is easy to install and has lower use cost; 4) Through the size adaptation design of the eccentric boss 2 and the eccentric hole 7 of the first nut and the second nut, the performance of the anti-loosening nut is more stable after installation; 5) By setting an indicator mark on the first body 1 and the second body 6, the installer can determine the torsion angle according to the position of the arrow indicator line of the indicator mark, which is beneficial to ensure that the tightening torque of the double nut meets the construction tightening requirements and is conducive to fast and safe construction.

[0042] In the description of the present invention, in addition, the terms "first", "second", "another", and "yet another" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An integrated anti-loosening nut for a transmission tower, characterized in that: include: A first nut, the first nut comprising a first body (1), an eccentric boss (2) provided at one end of the first body (1), and a first screw hole (3) penetrating the eccentric boss (2) and the first body (1), wherein a central axis of the first body (1) is eccentrically arranged with a central axis of the eccentric boss (2) and coincides with a central axis of the first screw hole (3); a second nut, the second nut comprising a second body (6), a second screw hole (8) extending inwardly from one end of the second body (6), and an eccentric hole (7) extending inwardly from the other end of the second body (6) to communicate with the second screw hole (8), wherein the central axis of the second body (6) is eccentrically arranged with the central axis of the eccentric hole (7) and coincides with the central axis of the second screw hole (8); The inner diameters of the first screw hole (3) and the second screw hole (8) are equal and their thread parameters are the same; the outer diameter of the eccentric boss (2) is larger than the inner diameter of the first screw hole (3); the inner diameter of the eccentric hole (7) is larger than the inner diameter of the second screw hole (8); the eccentric hole (7) and the eccentric boss (2) are adapted to each other; a wedge-shaped groove (4) is provided in the first screw hole (3) and / or the second screw hole (8); and a ball (5) is provided in the wedge-shaped groove (4).

2. The integrated anti-loosening nut for transmission tower according to claim 1, characterized in that: The wedge-shaped groove (4) extends circumferentially along the inner wall of the first screw hole (3) or the second screw hole (8); when the first nut or the second nut is screwed into the bolt that matches it in the forward direction, the ball (5) is squeezed to the deeper end of the wedge-shaped groove (4); when the first nut or the second nut is screwed out of the bolt that matches it in the reverse direction, the ball (5) is squeezed to the shallower end of the wedge-shaped groove (4); when the ball (5) is located at the shallower end of the wedge-shaped groove (4), at least part of the contour of the ball (5) protrudes outside the wedge-shaped groove (4).

3. The integrated anti-loosening nut for transmission tower according to claim 2, characterized in that: The first screw hole (3) is provided with the wedge-shaped groove (4), while the second screw hole (8) is not provided with the wedge-shaped groove (4); or the second screw hole (8) is provided with the wedge-shaped groove (4), while the first screw hole (3) is not provided with the wedge-shaped groove (4).

4. The integrated anti-loosening nut for transmission tower according to claim 2, characterized in that: The ball (5) is made of steel.

5. The integrated anti-loosening nut for transmission tower according to claim 1, characterized in that: The first body (1) and the second body (6) have the same outer profile and the same outer diameter.

6. The integrated anti-loosening nut for transmission tower according to claim 5, characterized in that: The sum of the height of the first body (1) and the height of the eccentric boss (2) is greater than the height of the second body (6).

7. The integrated anti-loosening nut for a transmission tower according to claim 6, characterized in that: The height of the first body (1) is equal to the height of the second body (6).

8. The integrated anti-loosening nut for a transmission tower according to claim 5, characterized in that: The outer contours of the first body (1) and the second body (6) are in the shape of hexagonal nuts.

9. The integrated anti-loosening nut for a transmission tower according to claim 1, characterized in that: The depth of the eccentric hole (7) is greater than the height of the eccentric boss (2).

10. The integrated anti-loosening nut for a transmission tower according to claim 1, characterized in that: The first body (1) and the second body (6) are both provided with indicator marks, which are used to indicate the up and down direction of the relative position of the first nut and the second nut, and to judge the relative torsion angle between the first nut and the second nut according to the relative displacement position of the indicator line.

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