Low-voltage overhead conductor drainage clamp
By improving the clamping components and fixing structure, the problems of inefficiency and wire damage caused by bolt clamping are solved, achieving efficient and stable wire connection, extending service life and reducing failure rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 深圳带电科技发展有限公司
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-15
AI Technical Summary
The bolt clamping method of existing low-voltage overhead conductor drain clamps requires multiple steps, which reduces installation efficiency and may damage the conductor surface, shorten its service life and become a potential fault.
It employs clamping and fixing components, including push posts, moving posts, annular toothed grooves, clamping blocks, and return springs, to automatically compensate for loosening caused by thermal expansion and contraction of the wires and vibration. Combined with a rain guard and locking structure, it ensures a stable connection and is adaptable to wires of different diameters and materials.
It improves installation efficiency, prevents wires from loosening and falling off, extends service life, reduces failure rate, adapts to different wires, and improves versatility and flexibility.
Smart Images
Figure CN224249124U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power tool technology, and specifically relates to a low-voltage overhead conductor drain clamp. Background Technology
[0002] Low-voltage overhead conductor clamps, as the name suggests, are mainly used for connecting or branching conductors in low-voltage, typically 1 kV and below, overhead lines. They are commonly used for temporary or permanent connections between distribution transformers and high-voltage lines, ensuring the continuity and reliability of power transmission. The clamps are made of high-strength, high-conductivity materials, such as high-quality aluminum alloy, possessing excellent mechanical and electrical properties, ensuring stable and reliable connections, reducing heat generation and contact resistance, and lowering safety risks. The clamps are rationally designed, compact in structure, and easy to carry and operate. In situations where power outages are not permitted or live-line working vehicles are inaccessible, live-line installation can be conveniently performed using an insulated rod.
[0003] Most wire clamps on the market currently use the tightening pressure of bolts to firmly clamp the wires. However, the bolt clamping method requires more operation steps and time to complete the clamping and fixing of the wires, which reduces installation efficiency, especially when rapid installation or large-scale installation is required. Moreover, if the bolt clamps too tightly, it will damage the surface of the wires, such as scratches and indentations. These damages may accelerate the aging and corrosion of the wires, shorten their service life, and the damaged areas may also become potential points for wire failure or breakage. Utility Model Content
[0004] In response to the problems mentioned in the background art, the purpose of this utility model is to provide a low-voltage overhead conductor drain clamp to solve the problem that bolt clamping requires more operation steps and time to complete the clamping and fixing of conductors, which reduces installation efficiency. Moreover, if the bolt clamps too tightly, it will cause damage to the surface of the conductor, such as scratches and indentations. These damages may accelerate the aging and corrosion of the conductor, shorten its service life, and the damaged area may also become a potential point for conductor failure or breakage.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] A low-voltage overhead conductor drain clamp includes an insulating tube, a connecting tube connected internally by threads, an insulating tube extending from the other end of the connecting tube, a fixing tube fixedly connected to the outside of the connecting tube, a clamping seat fixedly connected to the top of the fixing tube, a clamping assembly installed inside the insulating tube, and a fixing assembly installed on the outer wall of the insulating tube.
[0007] The clamping assembly includes a push post, a moving post, an annular toothed groove, a moving tube, a connecting post, a clamping block, and a first return spring. The moving post is slidably connected inside the insulating tube. The push post is fixedly connected to the bottom of the moving post, and the push post and the insulating tube are slidably connected. The first return spring is fixedly connected to the top of the push post, and the other end of the first return spring is fixedly connected to the inside of the insulating tube. The first return spring is sleeved on the outside of the moving post. An annular toothed groove is formed on the outside of the moving post. The moving tube is fixedly connected to the top of the moving post, and it is slidably connected to the inside of the connecting tube. The connecting post is fixedly connected to the top of the moving tube, and the other end of the connecting post is fixedly connected to the clamping block. This assembly ensures a reliable connection between the wire and the drainage clamp, automatically compensates for minor loosening caused by thermal expansion and contraction or vibration of the wire, thus maintaining a stable clamping effect. Furthermore, it can adapt to wires of different diameters and materials without requiring replacement of the clamping components, improving the versatility and flexibility of the drainage clamp.
[0008] As a preferred technical solution, a rain shield is fixedly connected to the top of the clamping seat, and a protective plate is provided at the bottom of the rain shield. This can directly block rainwater from directly contacting the wire and prevent corrosive substances in the rainwater from eroding the surface of the wire, thereby maintaining the good conductivity and mechanical properties of the wire.
[0009] As a preferred technical solution, locking holes are provided on both sides of the rain shield, and locking blocks are fixedly connected to both sides of the protective plate. The top of the locking block is provided with an inclined surface, and the locking block and the locking hole are engaged, which facilitates the installation and disassembly of the protective plate and improves the operating efficiency.
[0010] As a preferred technical solution, a threaded hole is provided on one side of the clamping seat, and a limit bolt is connected inside the threaded hole. This ensures that the clamping block maintains a stable position when clamping the wire, preventing the clamping block from shifting or loosening during the clamping process. This helps to improve the clamping effect and ensures that the wire is firmly clamped in the drain clamp.
[0011] As a preferred technical solution, the fixing component includes an assembly block, an assembly groove, a push block, a through groove, and a second return spring. The assembly block is fixedly connected to the outer wall of the insulating pipe. An assembly groove is opened on one side of the assembly block. A push block is rotatably connected inside the assembly groove. A second return spring is fixedly connected to the bottom of the assembly groove. The other end of the second return spring is fixedly connected to the push block. A through groove is opened at the bottom of the assembly groove, and the through groove communicates with the inside of the insulating pipe. One end of the push block is slidably connected to the through groove. A toothed block is symmetrically fixedly connected to one end of the push block. The toothed block and the annular toothed groove are inserted into each other. This can ensure a stable connection between the conductor and the power facility, effectively prevent the conductor from loosening or falling off under the action of wind, vibration, and other factors, thereby ensuring the stable operation of the power system. It can also reduce faults caused by loose or falling conductors and reduce the incidence of power accidents.
[0012] In summary, the present invention has the following main advantages:
[0013] First, in this utility model, the wire is placed between the clamping seat and the clamping block. The button is pressed, and then the push post is pushed, so that the push post pushes the moving tube through the moving post. At the same time, the first return spring is compressed. When the moving tube moves, it drives the connecting post to move. The connecting post drives the clamping block to move. The wire is clamped by the clamping block and the clamping seat, which can ensure a reliable connection between the wire and the drainage clamp. It can automatically compensate for the slight looseness caused by the thermal expansion and contraction or vibration of the wire, thereby maintaining a stable clamping effect. Moreover, it can adapt to wires of different diameters and materials without replacing the clamping parts, which improves the versatility and flexibility of the drainage clamp.
[0014] Secondly, in this utility model, pressing the button causes it to move, and simultaneously, the toothed block at one end of the button engages with the annular toothed groove. The button presses against the second return spring, which compresses it. Then, after the clamping assembly clamps the conductor, the button is released, the second return spring returns to its original position, and the button moves to engage with the annular toothed groove at one end. This ensures a stable connection between the conductor and the power facility, effectively preventing the conductor from loosening or falling off under the influence of wind, vibration, and other factors, thereby ensuring the stable operation of the power system. Furthermore, it reduces faults caused by loose or fallen conductors and lowers the incidence of power accidents. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0016] Figure 2 This is the utility model Figure 1 Enlarged view of part A;
[0017] Figure 3 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;
[0018] Figure 4 This is the utility model Figure 3 Enlarged view of part B;
[0019] Figure 5 This is the utility model Figure 3 Enlarged view of part C;
[0020] Figure 6 This is a cross-sectional three-dimensional structural diagram of the fixing component of this utility model.
[0021] Reference numerals: 1. Insulating pipe fitting; 2. Connecting pipe fitting; 3. Fixing pipe fitting; 4. Clamping seat; 5. Rain shield; 6. Protective plate; 7. Locking block; 8. Locking hole; 9. Threaded hole; 10. Limiting bolt; 11. Clamping assembly; 111. Push column; 112. Moving column; 113. Annular toothed groove; 114. Moving tube; 115. Connecting column; 116. Clamping block; 117. First return spring; 12. Fixing assembly; 121. Assembly block; 122. Assembly groove; 123. Press block; 124. Through groove; 125. Second return spring; 13. Toothed block. Detailed Implementation
[0022] Example
[0023] refer to Figures 1 to 6 The low-voltage overhead conductor drain clamp described in this embodiment includes an insulating tube 1, a connecting tube 2 threadedly connected inside the insulating tube 1, the other end of the connecting tube 2 extending out of the insulating tube 1, a fixing tube 3 fixedly connected to the outside of the connecting tube 2, a clamping seat 4 fixedly connected to the top of the fixing tube 3, a clamping assembly 11 installed inside the insulating tube 1, and a fixing assembly 12 installed on the outer wall of the insulating tube 1.
[0024] The clamping assembly 11 includes a push post 111, a movable post 112, an annular toothed groove 113, a movable tube 114, a connecting post 115, a clamping block 116, and a first return spring 117. The movable post 112 is slidably connected inside the insulating tube 1. The push post 111 is fixedly connected to the bottom of the movable post 112, and the push post 111 is slidably connected to the insulating tube 1. The first return spring 117 is fixedly connected to the top of the push post 111, and the other end of the first return spring 117 is fixedly connected to the inside of the insulating tube 1. The first return spring 117 is sleeved on the outside of the movable post 112. An annular toothed groove 113 is formed on the outside of the movable post 112. The top of the movable post 112 is fixedly connected to the outside of the movable post 112. A movable tube 114 is connected, and the movable tube 114 is slidably connected to the connecting tube 2. A connecting post 115 is fixedly connected to the top of the movable tube 114, and a clamping block 116 is fixedly connected to the other end of the connecting post 115. When the wire is placed between the clamping seat 4 and the clamping block 116, the button 123 is pressed, and then the push post 111 is pushed, so that the push post 111 pushes the movable tube 114 to move through the movable post 112. At the same time, the first reset spring 117 is compressed. When the movable tube 114 moves, it drives the connecting post 115 to move. The connecting post 115 drives the clamping block 116 to move. The wire is clamped by the clamping block 116 and the clamping seat 4.
[0025] refer to Figure 1The top of the clamping base 4 is fixedly connected to a rain shield 5, and the bottom of the rain shield 5 is provided with a protective plate 6. The rain shield 5 can directly block rainwater from directly contacting the wire, preventing corrosive substances in the rainwater from eroding the surface of the wire, thereby maintaining the good conductivity and mechanical properties of the wire.
[0026] refer to Figure 2 The rain shield 5 has locking holes 8 on both sides, and locking blocks 7 are fixedly connected to both sides of the protective plate 6. The top of the locking block 7 has a slope, and the locking block 7 is engaged with the locking hole 8. When the protective plate 6 is inserted into the bottom of the rain shield 5, the squeezing force is applied to the slope of the locking block 7. When the locking block 7 moves to the locking hole 8, the locking block 7 pops out and engages with the locking hole 8, thus completing the installation of the protective plate 6.
[0027] refer to Figure 4 The clamping seat 4 has a threaded hole 9 on one side, and a limit bolt 10 is threadedly connected inside the threaded hole 9. When the clamping block 116 clamps and fixes the wire, the limit bolt 10 is rotated, and the limit bolt 10 rotates with the threaded hole 9, thereby controlling the limit bolt 10 to move forward. The limit bolt 10 abuts against the connecting column 115, thereby limiting the clamping block 116.
[0028] refer to Figures 5 to 6 The fixing component 12 includes an assembly block 121, an assembly groove 122, a push block 123, a through groove 124, and a second return spring 125. The assembly block 121 is fixedly connected to the outer wall of the insulating tube 1. An assembly groove 122 is opened on one side of the assembly block 121. The push block 123 is rotatably connected inside the assembly groove 122. The second return spring 125 is fixedly connected to the bottom of the assembly groove 122. The other end of the second return spring 125 is fixedly connected to the push block 123. A through groove 124 is opened at the bottom of the assembly groove 122, and the through groove 124 communicates with the inside of the insulating tube 1. One end of the push block 123 is connected to the push block 125. The through slot 124 is a sliding connection. One end of the push block 123 is symmetrically fixed with a toothed block 13. The toothed block 13 is inserted into the annular toothed groove 113. When the push block 123 is pressed, the push block 123 moves. At the same time, the toothed block 13 at one end of the push block 123 is inserted into the annular toothed groove. The push block 123 presses against the second return spring 125. The second return spring 125 is compressed. Then, after the wire is clamped by the clamping assembly 11, the push block 123 is released. The second return spring 125 is reset. The push block 123 moves so that the toothed block 13 at one end is inserted into the annular toothed groove 113.
[0029] Operating principle and advantages: First, press the button 123 to move it. At the same time, the toothed block 13 at one end of the button 123 is inserted into the annular toothed groove, placing the wire between the clamping seat 4 and the clamping block 116. Then, push the push column 111, which pushes the moving tube 114 through the moving column 112. At the same time, the first return spring 117 is compressed. When the moving tube 114 moves, it drives the connecting column 115 to move. The connecting column 115 drives the clamping block 116 to move. The wire is clamped by the clamping block 116 and the clamping seat 4. Release the button 123, and the second return spring 125 returns to its original position. The button 123 moves so that the toothed block 13 at one end is inserted into the annular toothed groove 113. Finally, rotate the limiting bolt 10. The limiting bolt 10 rotates with the threaded hole 9, controlling the limiting bolt 10 to move forward. The limiting bolt 10 abuts against the connecting column 115, limiting the clamping block 116.
[0030] This invention ensures a reliable connection between the wire and the drainage clamp, automatically compensates for minor loosening caused by thermal expansion and contraction or vibration of the wire, thus maintaining a stable clamping effect. It can also adapt to wires of different diameters and materials without the need to replace clamping components, improving the versatility and flexibility of the drainage clamp.
Claims
1. A low-voltage overhead conductor drain clamp, comprising an insulating tube (1), characterized in that: The insulating pipe (1) is internally threaded with a connecting pipe (2), and the other end of the connecting pipe (2) extends out of the insulating pipe (1). A fixing pipe (3) is fixedly connected to the outside of the connecting pipe (2). A clamping seat (4) is fixedly connected to the top of the fixing pipe (3). A clamping assembly (11) is installed inside the insulating pipe (1), and a fixing assembly (12) is installed on the outer wall of the insulating pipe (1). The clamping assembly (11) includes a push post (111), a moving post (112), an annular toothed groove (113), a moving tube (114), a connecting post (115), a clamping block (116), and a first return spring (117). The moving post (112) is slidably connected inside the insulating tube (1). The push post (111) is fixedly connected to the bottom of the moving post (112). The push post (111) is slidably connected to the insulating tube (1). The first return spring (117) is fixedly connected to the top of the push post (111). The other end of the reset spring (117) is fixedly connected to the inside of the insulating tube (1). The first reset spring (117) is sleeved on the outside of the moving column (112). The outside of the moving column (112) is provided with an annular toothed groove (113). The top of the moving column (112) is fixedly connected to the moving tube (114). The moving tube (114) is slidably connected to the inside of the connecting tube (2). The top of the moving tube (114) is fixedly connected to the connecting column (115). The other end of the connecting column (115) is fixedly connected to the clamping block (116).
2. The low-voltage overhead conductor drain clamp according to claim 1, characterized in that: The top of the clamping seat (4) is fixedly connected to a rain shield (5), and the bottom of the rain shield (5) is provided with a protective plate (6).
3. A low-voltage overhead conductor drain clamp according to claim 2, characterized in that: The rain shield (5) has locking holes (8) on both sides, and the protective plate (6) has locking blocks (7) fixedly connected to both sides. The top of the locking block (7) has an inclined surface, and the locking block (7) and the locking hole (8) are snapped together.
4. The low-voltage overhead conductor drain clamp according to claim 1, characterized in that: The clamping seat (4) has a threaded hole (9) on one side, and a limit bolt (10) is threaded inside the threaded hole (9).
5. A low-voltage overhead conductor drain clamp according to claim 1, characterized in that: The fixing component (12) includes an assembly block (121), an assembly groove (122), a push block (123), a through groove (124), and a second return spring (125). The assembly block (121) is fixedly connected to the outer wall of the insulating tube (1). An assembly groove (122) is provided on one side of the assembly block (121). The push block (123) is rotatably connected inside the assembly groove (122). The second return spring (125) is fixedly connected to the bottom of the assembly groove (122). The other end of the second return spring (125) is fixedly connected to the push block (123). A through groove (124) is provided at the bottom of the assembly groove (122). The through groove (124) communicates with the inside of the insulating tube (1). One end of the push block (123) is slidably connected to the through groove (124).
6. A low-voltage overhead conductor drain clamp according to claim 5, characterized in that: One end of the push block (123) is symmetrically fixedly connected with a toothed block (13), and the toothed block (13) and the annular toothed groove (113) are inserted into each other.