High load anti-loose iron accessory

Abstract

The utility model belongs to iron accessory field, concretely is a kind of high bearing anti-loosening iron accessory, including A arc locating piece;Two ends of the A arc locating piece are provided with square extension piece, A mounting hole is formed in the surface of the square extension piece, fixed ring is fixedly connected at the bottom of the square extension piece just below A mounting hole, the inner wall of the fixed ring is provided with gear slot in annular array, fixed threaded bolt is connected in the inside of A mounting hole, the nut end of the fixed threaded bolt is provided with fixed sheet;Through the gear slot and tooth engagement design of fixed ring and fixed sheet, mechanical self-locking anti-loosening function is realized, the annular array engagement of gear slot and tooth forms multidirectional resistance, combined with the elastic pre-tightening force of locking nut and spring sheet, gear slot and tooth engagement form mechanical lock by geometric occlusion, spring sheet elastic pre-tightening compensates bolt creep, solve the loosening problem caused by vibration or load change of traditional bolt, improve the long-term stability and security of iron accessory.

Description

Technical Field

[0001] This utility model relates to the field of iron accessories, specifically a high-load-bearing anti-loosening iron accessory. Background Technology

[0002] Tower fittings are connecting components used on power transmission towers, primarily for fixing and supporting cables and other electrical equipment. Specifically, these fittings typically include a fixing block, a bracket, and a clamp unit. The fixing block has a bracket fixedly connected to its bottom. The clamp unit consists of an upper clamp and a lower clamp. The upper clamp is fixedly connected to the bracket, and the lower clamp is hinged to the bottom of the bracket. In use, the cable is placed on the lower clamp, and the clamp is rotated. Then, the fixing bolts are inserted into the threaded holes, and the locking nuts are tightened to secure the upper and lower clamps. This design effectively reduces the impact of cable sway on the fixing block, increasing the lifespan of the device.

[0003] In the prior art, such as in CN221747929U, a metal accessory clamping device is disclosed. It includes a metal accessory body that supports electrical cables and a clamp for clamping the metal accessory body to a pole. The outer end of the metal accessory body is provided with a clamping mechanism, which includes a connecting seat and a connecting rod that are rotatably connected to each other. The connecting seat is fixedly connected to one end of the metal accessory body.

[0004] While the aforementioned patents prevent electrical cables from detaching from the iron accessory body under external environmental factors, and the first clamping plate can be length-controlled through an extension component to accommodate electrical cables of different thicknesses and increase the stability of the iron accessory body in supporting the electrical cables, the fixing bolts loosen with increasing service life, leading to loosening and detachment of the iron accessory, affecting the safety and stability of the mounting. Furthermore, with different cable models and specifications, and an increase in the number of cables, the iron accessory deforms, affecting its use. Therefore, a high-load-bearing, anti-loosening iron accessory is proposed to address these issues. Utility Model Content

[0005] To address the shortcomings of existing technologies, which address the issue that as the service life increases, fixing bolts may loosen, leading to the loosening and detachment of iron accessories, thus affecting the safety and stability of the load, and that the deformation of iron accessories due to different cable models and specifications and an increase in the number of cables also affects their use, this invention proposes a high-load-bearing anti-loosening iron accessory.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The high load-bearing anti-loosening iron accessory of this utility model includes an A-shaped positioning piece; square extension pieces are provided at both ends of the A-shaped positioning piece; an A-mounting hole is opened on the surface of the square extension piece; a fixing ring is fixedly connected to the bottom of the square extension piece directly below the A-mounting hole; the inner wall of the fixing ring is provided with a ring-shaped array of tooth grooves; a fixing threaded bolt is connected through the A-mounting hole; a fixing piece is provided at the nut end of the fixing threaded bolt; the surface of the fixing piece is provided with a ring-shaped array of teeth that match the tooth grooves; one end of the fixing threaded bolt passes through the A-mounting hole and connects to a B-shaped positioning piece; a spring piece is provided at the other end of the fixing threaded bolt; a locking nut is provided at the top of the spring piece; arc-shaped reinforcing ribs are provided on both sides of the surface of the A-shaped positioning piece and the B-shaped positioning piece; and several reinforcing plates are distributed at equal arc intervals between the arc-shaped reinforcing ribs.

[0007] Preferably, the engagement depth between the teeth of the fixing plate and the grooves of the fixing ring is 1 / 2 to 2 / 3 of the groove height, and the tooth tip angle is 60° to 90°.

[0008] Preferably, the diameter of the spring sheet is larger than the outer diameter of the locking nut, and the elastic modulus of the spring sheet is larger than the elastic modulus of the locking nut material.

[0009] Preferably, the cross-section of the arc-shaped reinforcing rib is trapezoidal, and the thickness of the reinforcing plate decreases from the arc-shaped reinforcing rib towards the central region.

[0010] Preferably, the size of the B arc-shaped positioning piece is the same as that of the A arc-shaped positioning piece, and the inner arc surfaces of both the A arc-shaped positioning piece and the B arc-shaped positioning piece are provided with anti-slip textures.

[0011] Preferably, the fixing ring and the square extension piece are integrally die-cast, and the fixing ring is made of quenched alloy steel with a nitrided surface.

[0012] The advantages of this utility model are:

[0013] 1. This utility model achieves a mechanical self-locking and anti-loosening function through the toothed groove and tooth meshing design of the fixing ring and fixing plate. The ring array meshing of the toothed groove and tooth forms multi-directional resistance. Combined with the elastic preload of the locking nut and spring plate, the toothed groove and tooth meshing forms mechanical locking through geometric interlocking. The elastic preload of the spring plate compensates for bolt creep, solving the problem of loosening of traditional bolts due to vibration or load changes, and improving the long-term stability and safety of iron accessories.

[0014] 2. This utility model achieves high load-bearing capacity and deformation resistance of iron accessories through the composite structure design of arc-shaped reinforcing ribs and reinforcing plates. The trapezoidal cross-section of the arc-shaped reinforcing ribs and the reinforcing plates with decreasing thickness form a multi-level stress dispersion network, avoiding local stress concentration. The arc-shaped reinforcing ribs and reinforcing plates disperse stress through structural topology optimization, solving the problem of deformation of iron accessories caused by the increase in the number of cables or changes in specifications, and enhancing the overall structural strength and durability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the A-shaped positioning piece and the B-shaped positioning piece of this utility model;

[0018] Figure 3 This is a schematic diagram of the tooth groove and tooth structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the arc-shaped reinforcing rib and reinforcing plate structure of this utility model.

[0020] In the diagram: 1. A arc-shaped positioning piece; 2. Square extension piece; 3. A mounting hole; 4. retaining ring; 5. toothed groove; 6. threaded bolt; 7. fixing piece; 8. tooth; 9. B arc-shaped positioning piece; 10. spring plate; 11. lock nut; 12. arc-shaped reinforcing rib; 13. reinforcing plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figures 1-4As shown, a high-load-bearing anti-loosening iron accessory includes an A-shaped positioning piece 1; square extension pieces 2 are provided at both ends of the A-shaped positioning piece 1, and A mounting holes 3 are opened on the surface of the square extension pieces 2. The bottom of the square extension pieces 2 is located directly below the A mounting holes 3 and a fixing ring 4 is fixedly connected. The inner wall of the fixing ring 4 is provided with a ring array of toothed grooves 5. A fixing threaded bolt 6 is connected through the A mounting holes 3. A fixing piece 7 is provided at the nut end of the fixing threaded bolt 6. The surface of the fixing piece 7 is provided with a ring array of teeth 8 that are adapted to the toothed grooves 5. One end of the fixing threaded bolt 6 is connected to a B-shaped positioning piece 9 through the A mounting holes 3. A spring piece 10 is provided at the other end of the fixing threaded bolt 6. A locking nut 11 is provided at the top of the spring piece 10. Arc-shaped reinforcing ribs 12 are provided on both sides of the surface of the A-shaped positioning piece 1 and the B-shaped positioning piece 9. Several reinforcing plates 13 are distributed in an arc shape at equal intervals between the arc-shaped reinforcing ribs 12.

[0023] During operation, the fixing threaded bolt 6 is passed through the mounting hole 3 (A) and screwed into the arc-shaped positioning piece 9 (B). The teeth 8 of the fixing piece 7 engage and lock with the grooves 5 of the fixing ring 4. Tightening the locking nut 11 compresses the spring plate 10 to generate elastic preload. The arc-shaped reinforcing ribs 12 and reinforcing plates 13 of the A / B arc-shaped positioning pieces disperse the external load and form an anti-deformation support structure. The engagement of the grooves 5 and teeth 8, combined with the elastic preload, achieves double anti-loosening. The arc-shaped reinforcing ribs 12 and reinforcing plates 13 enhance the load-bearing capacity, making it suitable for high-load and vibration environments.

[0024] Furthermore, the engagement depth between the teeth 8 of the fixing plate 7 and the tooth groove 5 of the fixing ring 4 is 1 / 2 to 2 / 3 of the height of the tooth groove 5, and the tooth tip angle of the teeth 8 is 60° to 90°.

[0025] During operation, the tooth 8 is inserted into the tooth groove 5 at a depth of 1 / 2 to 2 / 3 of the height with a tooth tip angle of 60° to 90°. The tooth tip angle is adapted to the shear force direction, and the meshing depth balances the pull-out resistance and assembly tolerance to ensure locking stability. The optimized tooth profile parameters prevent the tooth groove 5 from cracking or slipping under extreme loads, thereby improving the reliability of mechanical locking.

[0026] Furthermore, the diameter of the spring plate 10 is larger than the outer circle diameter of the locking nut 11, and the elastic modulus of the spring plate 10 is greater than the elastic modulus of the material of the locking nut 11.

[0027] During operation, the diameter of the spring plate 10 is larger than the outer diameter of the locking nut 11. The high elastic modulus material provides continuous elastic support after pre-tightening, compensating for the pre-tightening force attenuation caused by bolt creep or vibration. The elastic modulus difference design extends the anti-loosening cycle and reduces the maintenance frequency.

[0028] Furthermore, the cross-section of the arc-shaped reinforcing rib 12 is trapezoidal, and the thickness of the reinforcing plate 13 decreases from the arc-shaped reinforcing rib 12 towards the central region;

[0029] During operation, the arc-shaped reinforcing rib 12 adopts a trapezoidal cross section to increase the moment of inertia, and the thickness of the reinforcing plate 13 decreases from the edge to the center, forming a gradient load-bearing structure. This disperses stress and avoids local deformation. The gradient structure optimizes stress distribution and prevents the iron accessories from bending and breaking due to the increase in the number of cables.

[0030] Furthermore, the dimensions of the B arc-shaped positioning piece 9 are the same as those of the A arc-shaped positioning piece 1, and both the A arc-shaped positioning piece 1 and the B arc-shaped positioning piece 9 have anti-slip textures on their inner arc surfaces.

[0031] During operation, the inner arc surface of the A / B arc positioning plate is processed with anti-slip texture. The texture is in the form of interlaced grooves. When the cable is clamped, the texture is embedded in the surface to increase friction resistance. The anti-slip texture prevents the cable from sliding and shifting, ensuring the stability of the load.

[0032] Furthermore, the fixing ring 4 and the square extension piece 2 are integrally die-cast, and the fixing ring 4 is made of quenched alloy steel with nitriding treatment on the surface.

[0033] During operation, the fixing ring 4 and the square extension piece 2 are integrally die-cast. After quenching and nitriding treatment of the alloy steel, a nitrided layer is generated on the surface, which improves hardness and corrosion resistance. The nitriding process enhances surface properties, making it suitable for harsh outdoor environments such as humidity and salt spray, and extending its service life.

[0034] Working principle: During installation, the threaded bolt 6 passes through the mounting hole 3 (A) and connects to the arc-shaped positioning piece 9 (B). The teeth 8 of the fixing piece 7 are embedded in the grooves 5 of the fixing ring 4 to form a mechanical lock. Tightening the locking nut 11 compresses the spring plate 10 to generate a continuous elastic preload, which counteracts bolt loosening caused by vibration or load changes. The arc-shaped reinforcing ribs 12 of the A / B arc-shaped positioning pieces and the reinforcing plates 13 with decreasing thickness form a gradient load-bearing structure to disperse external stress. The anti-slip texture on the inner arc surface increases the friction resistance of the cable. The integral die-cast quenched alloy steel fixing ring 4 is nitrided to improve surface hardness and corrosion resistance, achieving an integrated function of anti-loosening, high load-bearing capacity and durability.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-load-bearing anti-loosening iron accessory, characterized in that: The system includes an arc-shaped positioning piece (1); square extension pieces (2) are provided at both ends of the arc-shaped positioning piece (1); an A mounting hole (3) is opened on the surface of the square extension piece (2); a fixing ring (4) is fixedly connected to the bottom of the square extension piece (2) directly below the A mounting hole (3); the inner wall of the fixing ring (4) is provided with toothed grooves (5) in a ring array; a fixing threaded bolt (6) is connected through the A mounting hole (3); a fixing piece (7) is provided at the nut end of the fixing threaded bolt (6); the fixing piece (7) The surface is arranged in a ring array with teeth (8) that are compatible with the tooth groove (5). One end of the fixing threaded bolt (6) passes through the mounting hole (3) of A and connects to the arc-shaped positioning piece (9) of B. The other end of the fixing threaded bolt (6) is provided with a spring piece (10). A locking nut (11) is provided on the top of the spring piece (10). Arc-shaped reinforcing ribs (12) are provided on both sides of the surface of the arc-shaped positioning piece (1) of A and the arc-shaped positioning piece (9). Several reinforcing plates (13) are distributed in an arc shape at equal intervals between the arc-shaped reinforcing ribs (12).

2. The high load-bearing anti-loosening iron accessory according to claim 1, characterized in that: The engagement depth between the teeth (8) of the fixing plate (7) and the grooves (5) of the fixing ring (4) is 1 / 2 to 2 / 3 of the height of the grooves (5), and the tooth tip angle of the teeth (8) is 60° to 90°.

3. The high load-bearing anti-loosening iron accessory according to claim 1, characterized in that: The diameter of the spring sheet (10) is greater than the outer circle diameter of the locking nut (11), and the elastic modulus of the spring sheet (10) is greater than the elastic modulus of the material of the locking nut (11).

4. The high load-bearing anti-loosening iron accessory according to claim 1, characterized in that: The cross-section of the arc-shaped reinforcing rib (12) is trapezoidal, and the thickness of the reinforcing plate (13) decreases from the arc-shaped reinforcing rib (12) towards the central region.

5. The high load-bearing anti-loosening iron accessory according to claim 1, characterized in that: The size of the B arc-shaped positioning piece (9) is the same as that of the A arc-shaped positioning piece (1), and the inner arc surfaces of both the A arc-shaped positioning piece (1) and the B arc-shaped positioning piece (9) are provided with anti-slip textures.

6. The high load-bearing anti-loosening iron accessory according to claim 1, characterized in that: The fixing ring (4) and the square extension piece (2) are integrally die-cast. The fixing ring (4) is made of quenched alloy steel and its surface is nitrided.

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