Highly secure die cast aluminum wedge clip

Abstract

The application relates to the technical field of wedge-type wire clamps, and particularly discloses a high-fastening die-cast aluminum alloy wedge-type wire clamp which comprises a wire clamp body, a wedge block arranged in a wedge-shaped groove of the wire clamp body, a fixing mechanism arranged in the wire clamp body and used for fixing a steel strand, and a fastening mechanism arranged on the steel strand wound on the wedge block and used for fastening the steel strand. In the application, a double-locking system is formed by the fixing mechanism in the wire clamp body and the fastening mechanism on the steel strand, the arc surface of a pushing plate in the fixing mechanism is attached to the surface of the steel strand through the anti-skid convex points, the contact area and the friction force are increased, the core compression is realized in cooperation with the wedge block, the fastening ring is locked eccentrically through the lock head to realize secondary tightening, the problems of steel strand slippage and looseness are solved completely, the stability can be maintained under complex working conditions such as vibration, temperature difference and tension fluctuation, the line fault risk is greatly reduced, and the operation safety of the power transmission line is improved.

Description

Technical Field

[0001] This invention relates to the field of wedge clamp technology, and more particularly to a high-tightness die-cast aluminum alloy wedge clamp. Background Technology

[0002] Wedge clamps are core hardware used in power transmission and distribution lines to fix steel strands and achieve wire anchoring. Traditional wedge clamps are mostly made of cast iron or ordinary aluminum alloy, and the overall structure uses a single wedge shape to fix the steel strands.

[0003] During long-term use, traditional wire clamps generally suffer from the core problem of insecure fixing of steel strands, which makes them prone to loosening and slippage. Traditional structures rely solely on the squeezing action between the wedge and the clamp body, resulting in uneven stress on the surface of the steel strands. They lack auxiliary clamping and secondary locking structures. Under conditions such as wind vibration, temperature changes, and line tension fluctuations, gaps easily appear between the steel strands and the wedge and clamp body, causing the steel strands to slip slowly and even leading to safety hazards such as wire failure and line detachment. Therefore, in order to solve these problems, a high-tightness die-cast aluminum alloy wedge-shaped wire clamp is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-tightness die-cast aluminum alloy wedge-shaped wire clamp.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-tightness die-cast aluminum alloy wedge-shaped wire clamp includes a wire clamp body, wherein a wedge block is provided in the wedge-shaped groove of the wire clamp body;

[0007] The clamp body is provided with a fixing mechanism for fixing the steel strand.

[0008] The steel strand wound on the wedge is provided with a fastening mechanism for securing the steel strand.

[0009] Preferably, the fixing mechanism includes a mounting plate installed inside the clamp body, an internally threaded cylinder installed on the side of the mounting plate, a first threaded rod being threadedly connected to the internal threaded cylinder, and a pushing plate being rotatably installed at the end of the first threaded rod.

[0010] Preferably, the pushing plate has an arc-shaped surface that fits against the steel strand on the side away from the first threaded rod, and a number of anti-slip protrusions are provided on the arc-shaped surface.

[0011] Preferably, a sliding rod is installed on the side of the push plate away from the arc surface, and a mounting hole is opened on the side of the mounting plate. A sliding sleeve is installed in the mounting hole, the sliding rod is slidably sleeved in the sliding sleeve, and a limit block is installed at the end of the sliding rod.

[0012] Preferably, a mounting block is mounted on the side of the mounting plate near the internally threaded cylinder, and the internally threaded cylinder is mounted on the side of the mounting block.

[0013] Preferably, a rotating block is rotatably connected to the end of the first threaded rod, the rotating block is installed on the side of the push plate near the first threaded rod, and a rotating sleeve is fixedly sleeved on the first threaded rod.

[0014] Preferably, the fastening mechanism includes a plurality of fastening rings sleeved on the steel strand, the fastening rings having notches, and a first fixing block and a second fixing block respectively connecting the two ends of the fastening rings, and a shrinking component for shrinking the fastening rings is provided between the first fixing block and the second fixing block.

[0015] Preferably, the shrinking assembly includes fixing holes corresponding to the positions of the first fixing block and the second fixing block. A second threaded rod is provided in the two fixing holes. A first anti-slip nut and a second anti-slip nut are threaded onto the second threaded rod. The first anti-slip nut is located on the side of the second fixing block closer to the first fixing block, and the second anti-slip nut is located on the side of the second fixing block farther from the first fixing block. A through hole is provided at the end of the second threaded rod. A pin is provided in the through hole. A lock head is rotatably provided on the pin. The distances between the two sides where the top of the pin and the arc-shaped corner of the lock head are connected are not equal. An arc-shaped corner is provided at the corner of the lock head closer to the first fixing block.

[0016] Preferably, the side of the lock head contacts the first fixing block, and a handle is installed on the side of the lock head away from the first fixing block.

[0017] Preferably, the lock head has a slot on the side away from the first fixing block, the handle is inserted into the slot, the inner ring of the fastening ring is provided with a rubber ring, and the wire clamp body and the wedge are both integrally formed by die-cast aluminum alloy.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this invention, a double locking system is formed by the fixing mechanism inside the clamp body and the fastening mechanism on the steel strand. In the fixing mechanism, the arc-shaped surface of the pushing plate and the anti-slip protrusions are in contact with the surface of the steel strand, increasing the contact area and friction, and the core is pressed together with the wedge block; the fastening ring achieves secondary tightening through the eccentric locking of the lock head, which completely solves the problem of steel strand slippage and loosening. It can still remain stable under complex working conditions such as vibration, temperature difference, and tension fluctuation, greatly reducing the risk of line faults and improving the safety of power transmission line operation.

[0020] 2. In this invention, the main body of the wire clamp and the wedge are integrally formed from die-cast aluminum alloy, which reduces the weight by more than 30% compared with traditional cast iron wire clamps, reducing the labor intensity of installation and improving construction efficiency. At the same time, the die-cast aluminum alloy has a dense structure and excellent mechanical properties, with tensile strength and vibration resistance far exceeding those of ordinary cast aluminum alloy. Combined with the guide structure of the sliding rod and sliding sleeve, it avoids the push plate from shifting and jamming. The overall structure is durable and has excellent corrosion resistance, which can adapt to the harsh outdoor environment for a long time, extending the service life of the wire clamp and reducing replacement and maintenance costs.

[0021] 3. In this invention, the fixing mechanism, through the threaded engagement of the first threaded rod and the inner threaded cylinder, can precisely adjust the clamping force of the pushing plate to adapt to the fixing requirements of steel strands of different diameters; the fastening mechanism adopts a combination of the second threaded rod and the eccentric lock head, which can quickly complete the fastening and anti-loosening locking without special tools. The rubber ring avoids damage to the surface of the steel strand, and the anti-slip nut and the eccentric lock head provide double anti-loosening to prevent the threads from loosening. The installation and maintenance operation is simple and efficient, improving the convenience of construction and operation and maintenance, and reducing labor costs. Attached Figure Description

[0022] Figure 1 This is a partial cross-sectional view of the clamp body of a high-tightness die-cast aluminum alloy wedge clamp proposed in this invention;

[0023] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0024] Figure 3 This is a schematic diagram of the fastening ring of a high-tightness die-cast aluminum alloy wedge-shaped wire clamp proposed in this invention;

[0025] Figure 4 for Figure 3 Enlarged view of part B in the middle;

[0026] Figure 5 This is a schematic diagram showing the connection between the fastening ring and the rubber ring of a high-tightness die-cast aluminum alloy wedge-shaped wire clamp proposed in this invention.

[0027] Figure 6 for Figure 5 Enlarged view of a section in the middle C;

[0028] Figure 7 This is a schematic diagram showing the connection between the lock head and the pin of a high-tightness die-cast aluminum alloy wedge-shaped wire clamp proposed in this invention.

[0029] In the diagram: 1. Wire clamp body; 2. Wedge block; 3. Fastening ring; 4. Mounting plate; 5. Mounting block; 6. Internal threaded cylinder; 7. First threaded rod; 8. Rotating block; 9. Pushing plate; 10. Arc-shaped surface; 11. Anti-slip protrusion; 12. Rotating sleeve; 13. Sliding rod; 14. Sliding sleeve; 15. Limiting block; 16. Rubber ring; 17. First fixing block; 18. Second fixing block; 19. Second threaded rod; 20. First anti-slip nut; 21. Second anti-slip nut; 22. Lock head; 23. Hand lever; 24. Pin shaft; 25. Through hole; 26. Arc-shaped corner; 27. Insertion groove. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Reference Figure 1-7 A high-tightness die-cast aluminum alloy wedge-shaped wire clamp includes a wire clamp body 1, and a wedge block 2 is provided in the wedge groove of the wire clamp body 1;

[0033] The clamp body 1 is equipped with a fixing mechanism for fixing the steel strand;

[0034] The steel strand wound on the wedge 2 is equipped with a fastening mechanism for securing the steel strand.

[0035] As a technical optimization of the present invention, the fixing mechanism includes a mounting plate 4 installed inside the wire clamp body 1. An internally threaded cylinder 6 is mounted on the side of the mounting plate 4. A first threaded rod 7 is internally threaded onto the internally threaded cylinder 6. A pushing plate 9 is rotatably mounted at the end of the first threaded rod 7. An arc-shaped surface 10, which conforms to the steel strand, is provided on the side of the pushing plate 9 away from the first threaded rod 7. Several anti-slip protrusions 11 are provided on the arc-shaped surface 10. A sliding rod 13 is mounted on the side of the pushing plate 9 away from the arc-shaped surface 10. A mounting hole is provided on the side of the mounting plate 4, and a sliding sleeve 14 is installed in the mounting hole. The sliding rod 13 is slidably sleeved onto the sliding sleeve. Inside sleeve 14, a limiting block 15 is installed at the end of slide rod 13; a mounting block 5 is installed on the side of mounting plate 4 near the internal threaded cylinder 6, and the internal threaded cylinder 6 is installed on the side of mounting block 5; a rotating block 8 is rotatably connected to the end of the first threaded rod 7, and the rotating block 8 is installed on the side of pushing plate 9 near the first threaded rod 7, and a rotating sleeve 12 is fixedly sleeved on the first threaded rod 7; through the cooperation of slide rod 13 and sliding sleeve 14, a guide can be provided for pushing plate 9, so that pushing plate 9 can move laterally, and limiting block 15 can limit slide rod 13 to prevent slide rod 13 and sliding sleeve 14 from separating.

[0036] As a technical optimization of the present invention, the fastening mechanism includes a plurality of fastening rings 3 sleeved on the steel strand. The fastening rings 3 have notches. A first fixing block 17 and a second fixing block 18 are respectively connected to both ends of the fastening rings 3. A shrinking assembly for shrinking the fastening rings 3 is provided between the first fixing block 17 and the second fixing block 18. The shrinking assembly includes fixing holes corresponding to the sides of the first fixing block 17 and the second fixing block 18. A second threaded rod 19 is provided in each of the two fixing holes. A first anti-slip nut 20 and a second anti-slip nut 21 are threaded onto the second threaded rod 19. The first anti-slip nut 20 is located on the side of the second fixing block 18 closer to the first fixing block 17, and the second anti-slip nut 21 is located on the side of the second fixing block 18 away from the first fixing block 17. A through hole 25 is provided at the end of the second threaded rod 19. A pin 24 is provided in the through hole 25. A lock head 22 is rotatably mounted on the pin 24. The top of the pin 24 is connected to the arc-shaped bend 26 of the lock head 22. The two sides of the lock head 22 are not equidistant. An arc-shaped corner 26 is provided at the corner of the lock head 22 near the first fixing block 17. The side of the lock head 22 contacts the first fixing block 17, and a lever 23 is installed on the side of the lock head 22 away from the first fixing block 17. A insertion groove 27 is provided on the side of the lock head 22 away from the first fixing block 17, and the lever 23 is inserted into the insertion groove 27. A rubber ring 16 is provided inside the fastening ring 3. The wire clamp body 1 and the wedge block 2 are both integrally formed from die-cast aluminum alloy. The alloy is integrally molded without splicing or welding seams. The main body 1 of the clamp and the wedge block 2 are highly compact and free from defects such as air holes and shrinkage. Its mechanical properties are significantly better than those of ordinary casting and welding structures. Under the conditions of high tension of steel strand and continuous vibration of the line, the overall stress is uniform and there will be no problems such as stress concentration, cracking, or deformation. The tensile strength and fatigue resistance are greatly improved. It can withstand the line tension and outdoor vibration impact for a long time. It avoids clamp breakage failure from the structural root and ensures the safety and stability of the transmission line anchorage.

[0037] When using this invention:

[0038] Steel strand insertion and initial positioning: During use, the end of the steel strand to be fixed is inserted into the wedge-shaped groove inside the clamp body 1 from one side, allowing the steel strand to wrap around the wedge block 2 inside the wedge-shaped groove, and then exit from the same side of the clamp body 1. This allows the steel strand to form a winding layout on the wedge block 2, using the wedge-shaped structure of the wedge block 2 to achieve initial positioning, providing a foundation for subsequent tightening and fixing. At this time, the steel strand is located between the mounting plate 4 and the wedge block 2 inside the clamp body 1, in a state awaiting tightening, ensuring that the steel strand is in a straight position without twisting or offset.

[0039] Precise clamping of the internal fixing mechanism: After the steel strand is threaded, the rotating sleeve 12 on the first threaded rod 7 is rotated. The rotating sleeve 12 drives the first threaded rod 7 to rotate synchronously. The first threaded rod 7 and the internal threaded cylinder 6 on the mounting block 5 form a threaded transmission. Under the limiting action of the internal threaded cylinder 6, the first threaded rod 7 moves axially towards the wedge block 2. The end of the first threaded rod 7 is rotatably connected to the pushing plate 9 through the rotating block 8. The rotational force is not transmitted to the pushing plate 9, but only pushes the pushing plate 9 to move in a straight line. The sliding rod 13 on the back of the pushing plate 9 slides synchronously in the sliding sleeve 14 of the mounting plate 4. The sliding sleeve 14 guides and limits the sliding rod 13 to prevent the pushing plate 9 from deflecting or jamming during movement. The limiting block 15 at the end of the sliding rod 13 prevents the sliding rod 13 from falling out of the sliding sleeve 14, ensuring transmission stability. When the pushing plate 9 approaches the steel strand, its arc-shaped surface 10 completely fits against the outer wall of the steel strand. Several anti-slip protrusions 11 on the arc-shaped surface 10 are embedded in the gaps of the steel strand, greatly increasing the contact friction and preventing the steel strand from sliding axially. The rotating sleeve 12 is continuously rotated until the pushing plate 9 tightly presses the steel strand between the wedge block 2 and the pushing plate 9, completing the core fixation of the steel strand inside the clamp and ensuring that the steel strand is not loose or displaced within the clamp body 1.

[0040] Secondary locking of the external fastening mechanism: After the internal fixing is completed, several fastening rings 3 with rubber rings 16 are sequentially fitted onto the steel strand outside the wedge block 2, so that the winding end of the steel strand and the steel strand body are in the same fastening ring 3. The rubber rings 16 directly contact the outer wall of the steel strand, avoiding rigid compression damage to the surface of the steel strand by the fastening rings 3, while improving the anti-slip performance. The second threaded rod 19 is sequentially passed through the corresponding fixing holes on the first fixing block 17 and the second fixing block 18 at both ends of the fastening ring 3, so that the second threaded rod 19 passes through the two fixing blocks to form a contraction base; the first anti-slip nut 20 and the second anti-slip nut 21 are respectively threaded onto the second threaded rod 19. The first anti-slip nut 20 is tightened to fit the inner side of the second fixing block 18, and the second anti-slip nut 21 is tightened to fit the outer side of the second fixing block 18, forming a double nut anti-loosening base to prevent the threads from loosening. Then, insert the lever 23 into the insertion slot 27 of the lock head 22, and rotate the lock head 22 by holding the lever 23. The lock head 22 is rotatably connected to the through hole 25 of the second threaded rod 19 through the pin 24. Since the distance from the top of the pin 24 to the two sides of the arc corner 26 of the lock head 22 is not equal, the lock head 22 has an eccentric structure. When rotating, the wider side of the lock head 22 gradually squeezes the first fixing block 17, pushing the first fixing block 17 and the second fixing block 18 closer to each other, thereby causing the fastening ring 3 to shrink as a whole, the inner diameter gradually decreases, and the steel strand is tightly clamped, firmly binding the end of the steel strand to the steel strand body, realizing external secondary fastening.

[0041] Double anti-loosening and long-term stability: In the internal fixing mechanism, the threaded engagement between the first threaded rod 7 and the internal threaded cylinder 6 has self-locking properties. The guiding structure of the sliding rod 13 and the sliding sleeve 14 prevents the push plate 9 from rebounding, and the anti-slip protrusion 11 further prevents the steel strand from slipping. In the external fastening mechanism, the first anti-slip nut 20 and the second anti-slip nut 21 form a double-nut anti-loosening system. After the eccentric lock head 22 presses against the first fixing block 17, the eccentric self-locking principle prevents the lock head 22 from reversing and loosening. The double anti-loosening structure ensures that the clamp will not experience thread loosening or fastening failure under harsh working conditions such as long-term vibration, temperature difference changes, and line tension fluctuations. At the same time, the clamp body 1 and the wedge block 2 are integrally formed from die-cast aluminum alloy, which has high material strength, corrosion resistance, and vibration resistance. The overall structure is weld-free and spliced, with uniform stress distribution, avoiding structural damage caused by stress concentration, and is suitable for long-term outdoor use. The entire process requires no special tools, is simple to operate, and the clamping force and tightness can be flexibly adjusted to accommodate steel strands of different diameters and specifications, achieving high tightness, high reliability, and long-term stable anchoring of the steel strands.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-tightness die-cast aluminum alloy wedge-shaped wire clamp, comprising a wire clamp body (1), characterized in that, The wedge-shaped groove of the clamp body (1) is provided with a wedge block (2); The clamp body (1) is provided with a fixing mechanism for fixing the steel strand; The steel strand wound on the wedge (2) is provided with a fastening mechanism for fastening the steel strand.

2. The high-tightness die-cast aluminum alloy wedge clamp according to claim 1, characterized in that, The fixing mechanism includes a mounting plate (4) installed inside the online clamp body (1), an internal threaded cylinder (6) is installed on the side of the mounting plate (4), a first threaded rod (7) is threadedly connected to the internal threaded cylinder (6), and a push plate (9) is rotatably installed at the end of the first threaded rod (7).

3. The high-fastness die-cast aluminum alloy wedge clamp according to claim 2, characterized in that, The push plate (9) has an arc-shaped surface (10) on the side away from the first threaded rod (7) that fits with the steel strand, and a number of anti-slip protrusions (11) are provided on the arc-shaped surface (10).

4. The high-tightness die-cast aluminum alloy wedge clamp according to claim 3, characterized in that, A sliding rod (13) is installed on the side of the push plate (9) away from the arc surface (10). An installation hole is opened on the side of the mounting plate (4), and a sliding sleeve (14) is installed in the installation hole. The sliding rod (13) is slidably sleeved in the sliding sleeve (14), and a limit block (15) is installed at the end of the sliding rod (13).

5. A high-tightness die-cast aluminum alloy wedge-shaped wire clamp according to claim 2, characterized in that, The mounting plate (4) has a mounting block (5) installed on the side near the internal threaded cylinder (6), and the internal threaded cylinder (6) is installed on the side of the mounting block (5).

6. A high-tightness die-cast aluminum alloy wedge-shaped wire clamp according to claim 2, characterized in that, The first threaded rod (7) is rotatably connected to a rotating block (8) at its end. The rotating block (8) is installed on the side of the push plate (9) near the first threaded rod (7). A rotating sleeve (12) is fixedly sleeved on the first threaded rod (7).

7. The high-tightness die-cast aluminum alloy wedge clamp according to claim 1, characterized in that, The fastening mechanism includes several fastening rings (3) sleeved on the steel strand. The fastening rings (3) have notches. The two ends of the fastening rings (3) are respectively connected to a first fixing block (17) and a second fixing block (18). A shrinking component for shrinking the fastening rings (3) is provided between the first fixing block (17) and the second fixing block (18).

8. A high-tightness die-cast aluminum alloy wedge clamp according to claim 7, characterized in that, The shrinking assembly includes fixing holes corresponding to the positions of the first fixing block (17) and the second fixing block (18) on the sides. A second threaded rod (19) is provided in the two fixing holes. A first anti-slip nut (20) and a second anti-slip nut (21) are threaded onto the second threaded rod (19). The first anti-slip nut (20) is located on the side of the second fixing block (18) close to the first fixing block (17), and the second anti-slip nut (21) is located on the side of the second fixing block (18) away from the first fixing block (17). A through hole (25) is provided at the end of the second threaded rod (19). A pin (24) is provided in the through hole (25). A lock head (22) is rotatably provided on the pin head (24). The distances between the two sides connected by the top of the pin head (24) and the arc corner (26) of the lock head (22) are not equal. An arc corner (26) is provided at the corner of the lock head (22) close to the first fixing block (17).

9. A high-tightness die-cast aluminum alloy wedge-shaped wire clamp according to claim 8, characterized in that, The lock head (22) is in contact with the first fixing block (17) on its side, and a handle (23) is installed on the side of the lock head (22) away from the first fixing block (17).

10. A high-tightness die-cast aluminum alloy wedge clamp according to claim 9, characterized in that, The lock head (22) has a plug groove (27) on the side away from the first fixing block (17), the handle (23) is inserted into the plug groove (27), the inner ring of the fastening ring (3) is provided with a rubber ring (16), and the wire clamp body (1) and the wedge block (2) are both integrally formed by die-cast aluminum alloy.

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