Anti-loosening and anti-dismounting nut for power transmission line iron tower

Abstract

The utility model relates to the technical field of anti-loosening and anti-dismounting nuts, and provides an anti-loosening and anti-dismounting nut for a power transmission line iron tower, which comprises a first nut, a second nut and a third nut, the second nut is provided with a containing groove, and the first protruding part is detachably arranged in the containing groove; a semi-arc-shaped groove is formed in the second nut, and a rough-surface ball is movably arranged in the semi-arc-shaped groove; the flexible elastic rod is arranged in the semi-arc-shaped groove, and the flexible elastic rod abuts against the rough-surface ball. By means of the technical scheme, the problem that in the prior art, a ball anti-dismounting nut has an anti-loosening function or the anti-loosening function cannot meet the requirement is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-loosening and anti-disassembly nuts, specifically, to an anti-loosening and anti-disassembly nut for transmission line towers. Background Technology

[0002] Currently, ball-loaded anti-loosening nuts are commonly used in the construction of transmission line towers. These nuts either lack anti-loosening functionality or their anti-loosening functionality does not meet design requirements. With the continuous development of ultra-high voltage (UHV) transmission technology in China, higher requirements are being placed on the anti-loosening performance of fasteners in tower construction to ensure the safe operation of transmission line towers. Therefore, a nut with multiple anti-loosening functions is needed. Utility Model Content

[0003] This utility model proposes an anti-loosening and anti-disengagement nut for transmission line towers, which solves the problem that ball anti-disengagement nuts in related technologies either have anti-loosening functions or their anti-loosening functions do not meet the requirements.

[0004] The technical solution of this utility model is as follows:

[0005] A type of anti-loosening and anti-disassembly nut for transmission line towers, comprising:

[0006] The first nut has a first protrusion, and a groove is provided on one side of the first protrusion;

[0007] The second nut has a receiving groove, and the first protrusion is detachably disposed in the receiving groove; the second nut has a semi-circular groove inside;

[0008] The textured ball bearing is movably disposed within the semi-circular groove;

[0009] A flexible spring rod is disposed within the semi-circular groove, and the flexible spring rod abuts against the rough-surfaced ball.

[0010] Optionally, the second nut has a second threaded hole and further includes:

[0011] An inner plug is detachably disposed in the second threaded hole, and the inner plug is used to support the flexible spring bar and the rough ball bearing in the semi-circular groove.

[0012] Optionally, the first nut has a first threaded hole, the first protrusion is cylindrical, the first protrusion is concentrically arranged with the first threaded hole, and the groove is located on one side of the top of the first protrusion.

[0013] Optionally, the height of the first protrusion is greater than the depth of the receiving groove.

[0014] Optionally, the textured ball is made of metal, and the surface of the textured ball has burr marks.

[0015] Optionally, the textured ball is located at the apex of the semi-circular groove, and the flexible elastic rod is in close contact with the textured ball.

[0016] Optionally, the second nut has a marking protrusion on its top, which is used to distinguish the first nut from the second nut.

[0017] Optionally, the first nut has a first inclined surface, the second nut has a second inclined surface, and the first inclined surface and the second inclined surface are parallel to each other.

[0018] The working principle and beneficial effects of this utility model are as follows:

[0019] In this invention, when the tower vibrates, the interaction between the first protrusion, the groove, and the receiving groove of the second nut ensures that the threads at the contact surfaces of the first and second nuts are subjected to lateral shear force when the bolts and components are vibrated after installation, thus achieving a reliable anti-loosening function. Additionally, when subjected to vibration, the rough-surfaced ball bearings remain at the tip of the semi-circular groove due to the elastic pushing of the flexible spring rod, preventing slippage and thus achieving another anti-loosening function. When loosening is attempted, the flexible spring rod immediately pushes the rough-surfaced ball bearings to the deepest part of the semi-circular wedge groove, at which point the rough-surfaced ball bearings axially lock the loosening force, thereby achieving an anti-loosening function. Attached Figure Description

[0020] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0021] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 2 This is a front view of the internal structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the second nut structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the first nut structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the internal plug structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure of the bolt, components, first nut and second nut of this utility model.

[0027] In the diagram: 1. Second nut; 11. Second inclined surface; 101. Second threaded hole; 102. Semi-circular groove; 103. Marking protrusion; 104. Receiving groove; 2. First nut; 21. First inclined surface; 201. First protrusion; 202. First threaded hole; 203. Groove; 3. Bolt; 4. Component; 5. Flexible spring rod; 6. Inner hole plug; 7. Textured ball bearing. Detailed Implementation

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0029] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Reference Figures 1-6 As an embodiment of this utility model, an anti-loosening and anti-disassembly nut for transmission line towers is proposed, comprising: a first nut 2 having a first protrusion 201, and a groove 203 on one side of the first protrusion 201; a second nut 1 having a receiving groove 104, the first protrusion 201 being detachably disposed in the receiving groove 104; the second nut 1 having a semi-arc groove 102 inside; a rough-surfaced ball 7 being movably disposed in the semi-arc groove 102; and a flexible spring rod 5 being disposed in the semi-arc groove 102, the flexible spring rod 5 abutting against the rough-surfaced ball 7.

[0033] In the above scheme, the first nut 2 has a first protrusion 201, and a groove 203 is provided on one side of the first protrusion 201. The first protrusion 201 can be detachably installed in the receiving groove 104 of the second nut 1. The second nut 1 also has a semi-circular groove 102 inside, which provides installation space for the rough-surfaced ball bearing 7 and the flexible spring rod 5. The rough-surfaced ball bearing 7 is movably installed in the semi-circular groove 102 of the second nut 1. The surface of the rough-surfaced ball bearing 7 has a certain roughness, which increases the friction between it and other components. During the tightening of the nut, the rough-surfaced ball bearing 7 can roll freely in the semi-circular groove 102. When the nut is subjected to vibration or has a tendency to loosen, the rough-surfaced ball bearing 7 will generate a reverse force under the action of the flexible spring rod 5, thereby achieving the effect of preventing loosening. The flexible spring rod 5 is installed in the semi-circular groove 102 of the second nut 1 and abuts against the rough-surfaced ball bearing 7. The flexible spring rod 5 has a certain elasticity and can apply continuous pressure to the rough-surfaced ball bearing 7 after the nut is tightened. When the nut is subjected to a loosening external force, the flexible spring rod 5 will deform, further increasing the force on the rough-surfaced ball 7, so that the rough-surfaced ball 7 tightly abuts against the thread of the nut, preventing the nut from loosening.

[0034] When installing fasteners on transmission line towers, first align the receiving groove 104 of the second nut 1 with the first protrusion 201 of the first nut 2. Then, screw the first nut 2 and the second nut 1 onto the bolt 3. As the nuts are tightened further, the rough-surfaced ball bearings 7 roll within the semi-circular groove 102 and gradually come into close contact with the threads of the bolt 3 under the action of the flexible spring rod 5. During use, when the tower is affected by factors such as wind vibration and temperature changes, the anti-loosening and anti-dislodgement nuts can effectively prevent the nuts from loosening and falling off through the synergistic action of the rough-surfaced ball bearings 7 and the flexible spring rod 5, ensuring the safe operation of the transmission line tower.

[0035] Specifically, during tower vibration, due to the interaction of the first protrusion 201, the groove 203, and the receiving groove 104 of the second nut 1, the threads at the contact surfaces of the first nut 2 and the second nut 1 will be subjected to lateral shear force when the installed bolt 3 and components 4 are vibrated, thus achieving a reliable anti-loosening function. Additionally, during vibration, the rough-surfaced ball bearing 7 remains at the tip of the semi-circular groove 102 without slippage due to the elastic pushing of the flexible spring rod 5, thus achieving another anti-loosening function. When loosening occurs, the flexible spring rod 5 immediately pushes the rough-surfaced ball bearing 7 to the deepest part of the semi-circular wedge groove, at which point the rough-surfaced ball bearing 7 axially locks the loosening force, thus achieving an anti-loosening function.

[0036] Furthermore, the second nut 1 has a second threaded hole 101 and also includes an inner hole plug 6, which is detachably disposed in the second threaded hole 101. The inner hole plug 6 is used to support the flexible spring bar 5 and the rough ball 7 in the semi-arc groove 102.

[0037] In the above scheme, the second nut 1 has a second threaded hole 101. The inner plug 6, as an independent component, is detachably installed in the second threaded hole 101. The main function of the inner plug 6 is to support the flexible spring rod 5 and the roughened ball bearing 7 located in the semi-circular groove 102. The inner plug 6 ensures that the flexible spring rod 5 and the roughened ball bearing 7 can be stably positioned in the semi-circular groove 102, preventing them from falling off. During the tightening of the first nut 2, the second nut 1, and the bolt 3, the inner plug 6 is slowly squeezed out, allowing the roughened ball bearing 7 and the flexible spring rod 5 to better perform their anti-loosening function. As the nut is further tightened, the roughened ball bearing 7 rolls in the semi-circular groove 102 and gradually comes into close contact with the threads of the bolt 3 under the action of the flexible spring rod 5. During use, when the tower is affected by factors such as wind vibration and temperature changes, the anti-loosening and anti-dislodging nut can effectively prevent the nut from loosening and falling off through the synergistic action of the rough-surfaced ball bearing 7 and the flexible spring rod 5, thus ensuring the safe operation of the transmission line tower.

[0038] Furthermore, the first nut 2 has a first threaded hole 202, a first protrusion 201 is cylindrical, the first protrusion 201 and the first threaded hole 202 are arranged concentrically, and the groove 203 is located on one side of the top of the first protrusion 201.

[0039] In the above design, the first protrusion 201 is cylindrical, and it is concentrically arranged with the first threaded hole 202 to ensure the stability and symmetry of the structure. Meanwhile, a groove 203 is located on one side of the top of the first protrusion 201. This groove 203 engages with the second protrusion 103 of the second nut 1 during the assembly process to prevent loosening and disassembly of the nut.

[0040] Furthermore, the height of the first protrusion 201 is greater than the depth of the receiving groove 104.

[0041] Furthermore, the textured ball bearing 7 is made of metal, and its surface has burr-like textures.

[0042] In the above solution, on the one hand, the burr marks increase the surface roughness of the roughened ball bearing 7. When the nut is in use, the roughened ball bearing 7 can generate greater friction when it comes into contact with the threads of the bolt 3 and other internal components of the nut, thereby effectively preventing the nut from loosening. On the other hand, the burr marks make the movement of the roughened ball bearing 7 within the semi-circular groove 102 more irregular. When the nut is subjected to vibration or an external force attempts to loosen it, the roughened ball bearing 7 can generate a counterforce through its irregular movement, further enhancing the nut's anti-loosening performance.

[0043] Furthermore, the textured ball 7 is located at the apex of the semi-circular groove 102, and the flexible spring rod 5 is in close contact with the textured ball 7.

[0044] In the above scheme, the flexible spring rod 5 is in close contact with the roughened ball bearing 7, ensuring that the flexible spring rod 5 can promptly transmit the force to the roughened ball bearing 7. When the nut is tightened, the flexible spring rod 5 applies continuous pressure to the roughened ball bearing 7, causing the roughened ball bearing 7 to tightly press against the thread of the bolt 3, increasing friction and preventing the nut from loosening. During the operation of the nut, the flexible spring rod 5 and the roughened ball bearing 7 cooperate with each other, playing an important role in realizing the nut's anti-loosening and anti-unloading function.

[0045] Furthermore, the top of the second nut 1 has a marking protrusion 103, which is used to distinguish the first nut 2 from the second nut 1.

[0046] In the above scheme, the marking protrusion 103 can help users quickly distinguish the first nut 21 and the second nut 1, and quickly distinguish the front and back of the second nut 1.

[0047] Furthermore, the first nut 2 has a first inclined surface 21, and the second nut 1 has a second inclined surface 11, with the first inclined surface 21 and the second inclined surface 11 being parallel to each other.

[0048] In the above scheme, when the first nut 2 and the second nut 1 are tightened, the first inclined surface 21 and the second inclined surface 11 will guide the first nut 2 and the second nut 1 to be concentric.

[0049] In summary, this utility model is composed of a first nut 2, a second nut 1, a roughened ball bearing 7, a flexible spring rod 5, and an inner hole plug 6. A first protrusion 201 is formed on the outer end face of the first nut 2, and the top surface of the first protrusion 201 has a spherical arc. Two symmetrical semi-circular grooves are formed in the inner hole on one side of the outer end face of the second nut 1, and the flexible spring rod 5 and the roughened ball bearing 7 are respectively placed in the grooves. The flexible spring rod 5 is close to the deepest part of the semi-circular groove, and the roughened ball bearing 7 is placed on the outside of the flexible spring rod 5. Then, the inner hole plug 6 is used to support the flexible spring rod 5 and the roughened ball bearing 7 in the semi-circular groove to prevent them from falling out. A receiving groove 104 is formed on the inner end face of the second nut 1 to cooperate with the boss of the second nut 1, and its depth is less than the height of the boss of the first nut 2.

[0050] During installation, first screw the first protrusion 201 end face of the first nut 2 into the external thread of the bolt and tighten it to the required torque. Then screw the end face of the second nut 1 into the external thread of the bolt. During the screwing of the second nut 1, the rough-faced ball 7 will be pushed into the depth of the semi-circular groove 102 along the tightening force direction. The inner hole plug 6 will be gradually pushed out of the inner hole of the nut by the bolt thread, and the rough-faced ball 7 and the flexible spring 5 will be sealed in the semi-circular groove 102. Finally, tighten the second nut 1 to the required tightening torque to complete the installation.

[0051] After installation, the unique design of the inner and outer contact surfaces of this invention ensures reliable anti-loosening during tower vibration. Due to the interaction between the first protrusion 201 on the end face of the first nut 2, the groove of the first protrusion 201, and the receiving groove of the second nut 1, the external threads at the contact surfaces of the first nut 2 and the second nut 1 are subjected to lateral shear force. Furthermore, when this invention is subjected to vibration, the roughened ball bearing 7 remains at the tip of the semi-circular groove 102 due to the elastic pushing of the flexible spring rod 5, preventing slippage and thus achieving another anti-loosening function. When this invention is loosened, the flexible spring rod 5 immediately pushes the roughened ball bearing 7 to the deepest part of the semi-circular groove, at which point the roughened ball bearing 7 axially locks the loosening force, thereby achieving anti-loosening function.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A type of anti-loosening and anti-disassembly nut for transmission line towers, characterized in that, include: The first nut (2) has a first protrusion (201) and a groove (203) on one side of the first protrusion (201); The second nut (1) has a receiving groove (104), and the first protrusion (201) is detachably disposed in the receiving groove (104); the second nut (1) has a semi-circular groove (102) inside. The rough-surfaced ball bearing (7) is movably disposed within the semi-circular groove (102); A flexible spring rod (5) is disposed in the semi-circular groove (102) and abuts against the rough-surfaced ball (7).

2. The anti-loosening and anti-disassembly nut for transmission line towers according to claim 1, characterized in that, The second nut (1) has a second threaded hole (101) and further includes: An inner hole plug (6) is detachably disposed in the second threaded hole (101). The inner hole plug (6) is used to support the flexible spring bar (5) and the rough ball (7) in the semi-arc groove (102).

3. The anti-loosening and anti-disassembly nut for transmission line towers according to claim 1, characterized in that, The first nut (2) has a first threaded hole (202), the first protrusion (201) is cylindrical, the first protrusion (201) and the first threaded hole (202) are arranged concentrically, and the groove (203) is located on one side of the top of the first protrusion (201).

4. The anti-loosening and anti-disassembly nut for transmission line towers according to claim 1, characterized in that, The height of the first protrusion (201) is greater than the depth of the receiving groove (104).

5. The anti-loosening and anti-disassembly nut for transmission line towers according to claim 1, characterized in that, The textured ball (7) is made of metal and has burr marks on its surface.

6. The anti-loosening and anti-disassembly nut for transmission line towers according to claim 1, characterized in that, The textured ball (7) is located at the top corner of the semi-circular groove (102), and the flexible elastic rod (5) is in close contact with the textured ball (7).

7. The anti-loosening and anti-disassembly nut for transmission line towers according to claim 1, characterized in that, The second nut (1) has a marking protrusion (103) on its top, which is used to distinguish the first nut (2) from the second nut (1).

8. The anti-loosening and anti-disassembly nut for transmission line towers according to claim 1, characterized in that, The first nut (2) has a first inclined surface (21), and the second nut (1) has a second inclined surface (11). The first inclined surface (21) and the second inclined surface (11) are parallel to each other.

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