T-shaped self-adaptive wedge-caulking type power connection lead wire clamp

Abstract

The invention is applicable to the technical field of distribution line connection, and particularly relates to a T-shaped self-adaptive wedge-caulking type power connection wire clamp, which comprises a first wire clamp body, a plurality of hinge columns are connected to two sides of the surface of the first wire clamp body, and one ends of the plurality of hinge columns are jointly connected with a support block. And an inserting square hole is formed between every two adjacent hinge columns. According to the invention, through the first wire clamp body, the second wire clamp body, the wedge block and the self-adaptive adjusting block, multi-point clamping of a main wire and a branch wire is realized by using multiple groups of clamping grooves, and automatic adaptation and reliable pressing of wires with different wire diameters are realized through fitting of a wedge structure and an arc-shaped matching groove. The device is compact in structure and convenient to assemble, wire diameter measurement or model replacement is not needed, the problems that a traditional wire clamp is poor in contact and tedious in installation are solved, the device is suitable for live-line connection operation of a 10kV distribution line, and the operation efficiency and the safety and stability of a power supply system are improved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution line connection, in particular to a T-shaped adaptive wedge-tightening power connection wire clamp. Background Art

[0002] With the rapid advancement of urban power grid construction and the increasing requirements of users for power supply stability, 10kV distribution lines play an increasingly critical role in power supply systems. In order to achieve efficient connection between trunk lines and branch lines, lead wire clamps are commonly used as connection devices and are particularly widely used in live operations. At present, common lead wire clamp types include parallel groove clamps, piercing clamps and C-type clamps. Among them, parallel groove clamps are usually fastened by bolts, but bolts are prone to loosening and breaking in long-term outdoor environments such as wind vibration and temperature difference changes, which poses a great safety hazard; although piercing clamps are easy to install, they are prone to insufficient piercing or piercing the conductor, and the contact surface is small and the current carrying capacity is weak, affecting the operational stability; C-type clamps have strong current carrying capacity and can achieve self-locking under ideal conditions, but due to differences in the outer diameter of the wire, when the wire is too small, it may cause poor contact, and when the wire is too large, it is difficult to compress it, and it is difficult to achieve unified and standardized use. In addition, due to the wide variety of models, C-type clamps have problems such as difficulty in selection and complex spare parts management during emergency repairs.

[0003] Under the current background of increasing power load and frequent power connection operations, the poor adaptability and unstable locking performance of the traditional connection clamp structure have made it difficult to meet the needs of high reliability and high efficiency connection. Therefore, it is urgent to provide a power connection clamp with a reasonable structure, strong versatility, and the ability to automatically adapt to wires of different wire diameters and achieve reliable clamping, so as to improve the safety, convenience and adaptability of live connection operations. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a T-shaped adaptive wedge-tightening power lead-in clamp, aiming to solve the technical problems mentioned in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A T-shaped adaptive wedge-tightening power lead-in clamp comprises a first clamp body, a plurality of hinged columns are connected to both sides of the surface of the first clamp body, and one end of the plurality of hinged columns is commonly connected to a support block, a plug-in square hole is provided between two adjacent hinged columns, a second clamp body is commonly sleeved on the outer sides of the plurality of hinged columns, and a first arc surface is provided on the lower surface of the second clamp body;

[0007] The second wire clamp body is provided with a first through hole penetrating both end surfaces, and a plurality of first clamping grooves are provided on the side surface of the second wire clamp body. On both sides of the lower surface of the first wire clamp body, a first clamping groove and a second clamping groove are respectively provided, and on both sides of the upper surface of the second wire clamp body, a third clamping groove and a fourth clamping groove are respectively provided;

[0008] The surface of the support block is provided with a wedge-shaped groove, and a wedge block is arranged inside the wedge-shaped groove. The surface of the wedge block is connected with an adaptive adjustment block, and a second arc surface and a third arc surface are respectively arranged on the lower surface of the adaptive adjustment block and the upper surface of the wedge block. The adaptive adjustment block is provided with a second through hole penetrating both end surfaces, and a plurality of second clamping grooves are provided on the lower surface of the adaptive adjustment block. A first arc-shaped mating groove is provided at the inner top of the second clamping groove. The wedge block is provided with a third through hole penetrating both end surfaces, and a plurality of third clamping grooves are provided on the upper surface of the wedge block. A second arc-shaped mating groove is provided at the inner bottom of the third clamping groove;

[0009] A first connecting pin is jointly arranged inside the third through hole and the second through hole, and a second connecting pin penetrates through the inside of the first through hole. Limiting components are arranged on the surfaces of the first connecting pin and the second connecting pin.

[0010] Further, the width of the plugging square hole is the same as the width of the first clamping groove, and the inner diameter of the first through hole is the same as the outer diameter of the second connecting pin.

[0011] Further, the positions of the first clamping groove and the third clamping groove correspond to each other, and the positions of the second clamping groove and the fourth clamping groove correspond to each other.

[0012] Further, the shape of the wedge block is adapted to the shape of the wedge-shaped groove.

[0013] Further, the lower region of the adaptive adjustment block is embedded inside a plurality of third clamping grooves and is in fit with the first arc-shaped mating groove. The upper region of the wedge block is embedded inside a plurality of second clamping grooves and is in fit with the second arc-shaped mating groove. The second arc surface of the adaptive adjustment block has the same radian as the second arc-shaped mating groove of the wedge block, and the third arc surface of the wedge block has the same radian as the first arc-shaped mating groove of the adaptive adjustment block.

[0014] Further, the limiting component includes: limiting rings are arranged at one ends of the first connecting pin and the second connecting pin, and limiting annular grooves are respectively arranged at the other ends. Elastic snap rings are sleeved outside the limiting annular grooves.

[0015] A T-shaped adaptive wedge-tightening type power connection wire clamp provided by the present invention has the following beneficial effects:

[0016] The present invention provides a T-shaped adaptive wedge-tightening power lead-in wire clamp, comprising a first wire clamp body, a second wire clamp body, a wedge-tightening block and an adaptive adjustment block, using multiple groups of clamping grooves to achieve multi-point clamping of the main line and the branch line, and through the fit of the wedge-tightening structure and the arc-shaped matching groove, automatic adaptation and reliable compression of wires with different wire diameters are achieved. The device has a compact structure and is easy to assemble. It does not require measuring the wire diameter or changing the model. It overcomes the problems of poor contact and cumbersome installation of traditional wire clamps. It is suitable for live lead-in operations of 10kV distribution lines, improving operating efficiency and the safety and stability of the power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural schematic diagram of a T-shaped adaptive wedge-tightening power lead clamp.

[0018] Figure 2 The present invention is a schematic structural diagram of a first wire clamp body, a hinged column and a support block in a T-shaped adaptive wedge-tightening power lead-in wire clamp.

[0019] Figure 3 The present invention is a front elevation view of a first clamp body, a hinged column and a support block in a T-shaped adaptive wedge-tightening power lead clamp.

[0020] Figure 4 The present invention is a rear elevation view of a first clamp body, a hinged column and a support block in a T-shaped adaptive wedge-tightening power lead clamp.

[0021] Figure 5 The present invention is a schematic structural diagram of a second wire clamp body in a T-shaped adaptive wedge-tightening power lead clamp.

[0022] Figure 6 The present invention is a structural schematic diagram of an adaptive adjustment block, a wedging block and a first connecting pin in a T-shaped adaptive wedging type electric power lead-in clamp in an assembled state.

[0023] Figure 7 The present invention is a front structural schematic diagram of an adaptive adjustment block and a wedge-tightening block in a T-shaped adaptive wedge-tightening power lead-in clamp in a separated state.

[0024] Figure 8 The present invention is a schematic diagram of the upward structure of an adaptive adjustment block and a wedge-tightening block in a T-shaped adaptive wedge-tightening power lead-in clamp in a separated state.

[0025] Figure 9 The present invention is a schematic structural diagram of a second connecting pin and an elastic retaining spring in a T-shaped adaptive wedge-tightening power lead-in clamp.

[0026] Figure 10 The present invention is a schematic diagram of the overall structure of a T-shaped adaptive wedge-tightening power lead-in clamp when clamping the main conductor and the branch conductor.

[0027] In the figure: 1. First wire clamp body; 2. Second wire clamp body; 3. Adaptive adjustment block; 4. First connecting pin; 5. Wedging block; 6. Support block; 7. Hinge column; 8. Second connecting pin; 9. Plugging square hole; 10. Wedge-shaped groove; 11. First clamping groove; 12. Second clamping groove; 13. Third clamping groove; 14. Fourth clamping groove; 15. First card slot; 16. First through hole; 17. First arc-shaped mating groove; 18. Second through hole; 19. Second card slot; 20. Second arc-shaped mating groove; 21. Third card slot; 22. Third through hole; 23. Limit annular groove; 24. Elastic snap ring; 25. Limit ring. Specific implementation manner

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] As Figures 1-9 shown, a T-shaped adaptive wedging type power connection wire clamp provided by an embodiment of the present invention includes a first wire clamp body 1. Both sides of the surface of the first wire clamp body 1 are connected with a plurality of hinge columns 7, and one ends of the plurality of hinge columns 7 are jointly connected with a support block 6. A plugging square hole 9 is arranged between two adjacent hinge columns 7. The outside of the plurality of hinge columns 7 is jointly sleeved with a second wire clamp body 2, and the lower surface of the second wire clamp body 2 is provided with a first arc surface;

[0031] The second wire clamp body 2 is provided with a first through hole 16 penetrating through both ends of the surface. The side surface of the second wire clamp body 2 is provided with a plurality of first card slots 15. The width of the plugging square hole 9 is the same as the width of the first card slots 15.

[0032] Both sides of the lower surface of the first wire clamp body 1 are respectively provided with a first clamping groove 11 and a second clamping groove 12, and both sides of the upper surface of the second wire clamp body 2 are respectively provided with a third clamping groove 13 and a fourth clamping groove 14. The positions of the first clamping groove 11 and the third clamping groove 13 correspond to each other, and the positions of the second clamping groove 12 and the fourth clamping groove 14 correspond to each other.

[0033] The surface of the support block 6 is provided with a wedge-shaped groove 10, and a wedging block 5 is arranged inside the wedge-shaped groove 10. The shape of the wedging block 5 is adapted to the shape of the wedge-shaped groove 10.

[0034] The surface of the wedging block 5 is connected with an adaptive adjustment block 3. The lower surface of the adaptive adjustment block 3 and the upper surface of the wedging block 5 are respectively provided with a second arc surface and a third arc surface. The adaptive adjustment block 3 is provided with a second through hole 18 penetrating through both end surfaces, and a plurality of second clamping grooves 19 are provided on the lower surface of the adaptive adjustment block 3. A first arc-shaped mating groove 17 is provided at the inner top of the second clamping groove 19. The wedging block 5 is provided with a third through hole 22 penetrating through both end surfaces, and a plurality of third clamping grooves 21 are provided on the upper surface of the wedging block 5. A second arc-shaped mating groove 20 is provided at the inner bottom of the third clamping groove 21.

[0035] The lower region of the adaptive adjustment block 3 is embedded into the inside of a plurality of third clamping grooves 21 and is in fit with the first arc-shaped mating groove 17. The upper region of the wedging block 5 is embedded into the inside of a plurality of second clamping grooves 19 and is in fit with the second arc-shaped mating groove 20. The second arc surface of the adaptive adjustment block 3 has the same radian as the second arc-shaped mating groove 20 of the wedging block 5. The third arc surface of the wedging block 5 has the same radian as the first arc-shaped mating groove 17 of the adaptive adjustment block 3. The outer diameter of the first connecting pin is the same as the inner diameters of the second through hole and the third through hole.

[0036] A first connecting pin 4 is jointly arranged inside the third through hole 22 and the second through hole 18. A second connecting pin 8 is penetratingly arranged inside the first through hole 16. Limiting components are arranged on the surfaces of the first connecting pin 4 and the second connecting pin 8. The inner diameter of the first through hole 16 is the same as the outer diameter of the second connecting pin 8.

[0037] The limiting components include: limiting rings 25 are arranged at one ends of the first connecting pin 4 and the second connecting pin 8, and limiting annular grooves 23 are opened at the other ends. Elastic snap rings 24 are sleeved on the outer sides of the limiting annular grooves 23.

[0038] In an embodiment of the present invention, a T-shaped adaptive wedging type power connection lead clamp includes a first wire clamp body 1, a second wire clamp body 2, an adaptive adjustment block 3, a first connecting pin 4, a wedging block 5, a support block 6, a plurality of connecting columns 7, a second pin 8, and structural cooperation components matching with the above components. The two sides of the lower surface of the first wire clamp body 1 are respectively connected with the support block 6 through a plurality of connecting columns 7 to form an integral body. Plugging square holes 9 are arranged between the connecting columns 7 for cooperating with the insertion and clamping of the second wire clamp body 2. The second wire clamp body 2 is sleeved outside a plurality of connecting columns 7, and the lower surface of the second wire clamp body 2 is in the shape of a first arc surface.

[0039] A first through hole 16 penetrating both sides thereof is formed in the second wire clamp body 2. The through hole 16 is used for inserting a second pin 8, and the pin 8 is used to form a rotatable or limited connection between the second wire clamp body 2 and the connecting column 7. A plurality of first clamping grooves 15 are formed on the side surface of the second wire clamp body 2. The widths of these clamping grooves 15 are the same as the width of the plug-in square hole 9, so as to achieve accurate plug-in positioning. A first clamping groove 11 and a second clamping groove 12 are formed on the lower surface of the first wire clamp body 1. Corresponding positions on the upper surface of the second wire clamp body 2 are provided with a third clamping groove 13 and a fourth clamping groove 14. The four groups of clamping grooves are arranged in an up-and-down pairing manner. After the main wire or branch wire is placed in the clamping groove area, a four-point clamping state can be formed during subsequent wedging operations, thereby improving the positioning stability and contact area of the wire.

[0040] A wedge-shaped groove 10 is formed in the support block 6, and the wedge-shaped groove 10 is used for inserting a wedge block 5. The outer shape of the wedge block 5 matches the wedge-shaped groove 10, and a gradually pressing locking effect can be formed during the insertion process. An adaptive adjustment block 3 is connected to the upper surface of the wedge block 5. A plurality of second clamping grooves 19 are provided on the lower surface of the adaptive adjustment block 3. A first arc-shaped mating groove 17 is provided at the top inside the second clamping grooves 19, which forms a surface fit with the arc-shaped structure (third arc surface) on the upper part of the wedge block 5. A plurality of third clamping grooves 21 are correspondingly arranged on the upper surface of the wedge block 5. A second arc-shaped mating groove 20 is provided at the bottom of the third clamping grooves 21, which fits with the lower structure (second arc surface) of the adjustment block 3. A second through hole 18 and a third through hole 22 are respectively formed in the adaptive adjustment block 3 and the wedge block 5 for passing through a first connecting pin 4. A limiting annular groove 23 and an elastic snap ring 24 are provided outside the first connecting pin 4. After insertion, it is limited by the snap ring 24 to ensure firm and reliable connection and not easy to loosen.

[0041] During the installation process, the construction personnel first place the main wire and the branch wire in the clamping spaces formed by the first clamping groove 11 and the third clamping groove 13, and the second clamping groove 12 and the fourth clamping groove 14 respectively. After the main wire and the branch wire are clamped between the clamp bodies, the wedging assembly composed of the wedge block 5 and the adaptive adjustment block 3 is inserted into the wedge-shaped groove 10 of the support block 6 from the outside to the inside. During the insertion process, the second arc surface of the adaptive adjustment block 3 fits with the third arc surface of the wedge block 5. At the same time, under the action of force, the adjustment block 3 can perform angle adaptive adjustment according to the actual distance between the first wire clamp body 1 and the second wire clamp body 2, so as to ensure that the pressing and fitting can still be guaranteed in the case of inconsistent wire diameters or different installation postures of the wires. The first connecting pin 4 penetrates into the second through hole 18 and the third through hole 22 to complete the limit locking of the wedging assembly. The first connecting pin 4 is fixed firmly in the structure through the limiting annular groove 23 and the elastic snap ring 24. The second pin 8 is then arranged through the first through hole 16 to complete the assembly and fixation of the second wire clamp body 2.

[0042] When the overall structure is gradually tightened by the wedging block 5, the clamping grooves between the first wire clamp body 1 and the second wire clamp body 2 press the wire towards each other, achieving multi-point synchronous locking. Through the cooperation of the adaptive adjustment block 3 and the first arc surface structure on the lower surface of the second wire clamp body 2, the wire diameter deviation of the wire can be effectively compensated, ensuring that the wire surface fits with the groove, reducing the contact resistance, and preventing problems such as overheating or loosening caused by excessive gaps. This structure is quickly assembled, and the degree of standardization of components is high. There is no need to replace the wire clamp model according to different wire diameters, simplifying the on-site operation process.

[0043] The device of the present invention cleverly combines the fixture structure with the adaptive wedging structure to form a highly versatile and excellent pressing effect connecting wire clamp structure. Through the cooperation of the hinge column 7 and the slot 15, the assembly guidance of the main and branch line docking structure is realized. The wedging block 5 and the adjustment block 3 form an automatically adapted locking unit, enhancing the overall clamping stability. The four groups of clamping grooves are distributed in an upper and lower paired manner, effectively increasing the contact area and avoiding the problem of resistance concentration and overheating caused by point contact. The overall structure is applicable to wires with different diameters, without on-site measurement and selection, improving the emergency repair and installation efficiency. It is especially suitable for urban distribution networks, industrial power systems and other scenarios with high requirements for power supply continuity, and has good application and promotion prospects.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A T-shaped self-adaptive wedge-tightening type electric power connection lead clamp, comprising a first line clamp body, characterized in that, On both sides of the surface of the first wire clamp body, a number of hinge columns are connected, and one end of the number of hinge columns is commonly connected with a support block. A plugging square hole is arranged between two adjacent hinge columns. The outer sides of the number of hinge columns are commonly sleeved with a second wire clamp body, and a first arc surface is arranged on the lower surface of the second wire clamp body; The second wire clamp body is provided with a first through hole penetrating through both end surfaces. A number of first clamping grooves are arranged on the side surface of the second wire clamp body. On both sides of the lower surface of the first wire clamp body, a first clamping groove and a second clamping groove are respectively arranged. On both sides of the upper surface of the second wire clamp body, a third clamping groove and a fourth clamping groove are respectively arranged; A wedge-shaped groove is arranged on the surface of the support block, and a wedge-tightening block is arranged inside the wedge-shaped groove. An adaptive adjustment block is connected to the surface of the wedge-tightening block. Second arc surfaces and third arc surfaces are respectively arranged on the lower surface of the adaptive adjustment block and the upper surface of the wedge-tightening block. The adaptive adjustment block is provided with a second through hole penetrating through both end surfaces. A number of second clamping grooves are arranged on the lower surface of the adaptive adjustment block, and a first arc-shaped mating groove is arranged at the inner top of the second clamping groove. The wedge-tightening block is provided with a third through hole penetrating through both end surfaces. A number of third clamping grooves are arranged on the upper surface of the wedge-tightening block, and a second arc-shaped mating groove is arranged at the inner bottom of the third clamping groove; A second connecting pin is penetratingly arranged inside the first through hole. A first connecting pin is commonly arranged inside the third through hole and the second through hole. Limit assemblies are arranged on the surfaces of the first connecting pin and the second connecting pin.

2. The T-shaped adaptive wedge-tightening type electric power connecting lead clamp according to claim 1, wherein, The width of the plugging square hole is the same as the width of the first clamping groove. The inner diameter of the first through hole is the same as the outer diameter of the second connecting pin.

3. The T-shaped self-adaptive wedge-tightening type electric power connection lead clamp according to claim 1, wherein The positions of the first clamping groove and the third clamping groove correspond to each other. The positions of the second clamping groove and the fourth clamping groove correspond to each other.

4. The T-shaped adaptive wedge-tightening type electric power connection lead clamp according to claim 1, characterized in that, The shape of the wedge-tightening block is adapted to the shape of the wedge-shaped groove.

5. The T-shaped self-adaptive wedge-tightening type electric power connection lead clamp according to claim 1, characterized in that, The lower region of the adaptive adjustment block is embedded inside a number of third clamping grooves and is in fit with the first arc-shaped mating groove. The upper region of the wedge-tightening block is embedded inside a number of second clamping grooves and is in fit with the second arc-shaped mating groove. The second arc surface of the adaptive adjustment block has the same radian as the second arc-shaped mating groove of the wedge-tightening block. The third arc surface of the wedge-tightening block has the same radian as the first arc-shaped mating groove of the adaptive adjustment block; The outer diameter of the first connecting pin is the same as the inner diameters of the second through hole and the third through hole.

6. The T-shaped self-adaptive wedge-tightening type electric power connection lead clamp according to claim 1, wherein The limit assembly includes: limit rings are arranged at one ends of the first connecting pin and the second connecting pin, and limit annular grooves are arranged at the other ends. Elastic clamping rings are sleeved outside the limit annular grooves.

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