Low-voltage clamp with shock-absorbing buffer structure

Abstract

The utility model relates to a low -voltage wire clamp with shock attenuation buffer structure in power hardware technical field, especially the low -voltage wire clamp with shock attenuation buffer structure, including base, connecting block and slider, the both sides of base top left and right are all fixedly connected with connecting block, the sliding slot is all seted up in the two connecting blocks near the center end, the slider is all slidably connected in the sliding slot of two connecting blocks. The utility model discloses the elastic pressing plate of setting up in the inside of upper clamp block and lower clamp block, realizes the flexible fit clamping of the conductor, avoids the indentation, broken strand or aluminum conductor creep damage caused by traditional rigid compression, simultaneously, the continuous elastic pre -tightness of butterfly gasket is provided at the bolt connection, effectively compensates the clamping force attenuation caused by temperature cycle or vibration, and then through the cooperation of slider, connecting block and elastic pad, realizes the free sliding of certain distance, and the controllable frictional resistance provided by cooperation damping rubber strip, both allow necessary displacement, and inhibit uncontrolled swing, enhance the anti -shock and impact resistance, effectively reduce the conductor fatigue damage.

Description

Technical Field

[0001] This utility model relates to the field of power fittings technology, and in particular to a low-voltage wire clamp with a shock-absorbing and buffering structure. Background Technology

[0002] In low-voltage power distribution systems, wire clamps are key hardware for connecting and securing conductors, and are widely used in overhead lines, service lines, meter box downleads, and photovoltaic grid-connected applications. Their main function is to reliably clamp conductors onto insulators, crossarms, or equipment terminals while maintaining good electrical contact and mechanical stability.

[0003] Currently, most low-voltage clamps on the market are rigid structures, such as copper-aluminum crimp-type clamps, U-shaped screw clamps, or wedge clamps. Their bodies are usually made of one piece of metal or fastened by screws. Although these clamps have basic clamping and conductivity capabilities, rigid connections are prone to loosening or wire slippage due to resonance or instantaneous impact, threatening power supply continuity and personal safety. In addition, under dynamic loads such as wind vibration, vehicle traffic vibration, or equipment start-up and shutdown impact, continuous fretting friction occurs between the rigid clamp and the wire, which can cause wear, strand breakage, or even fracture of the wire surface over long-term operation.

[0004] Therefore, it is necessary to design a low-voltage clamp with a shock-absorbing and buffering structure to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of rigid clamps, such as weak shock and impact resistance and easy fatigue damage to conductors, this utility model provides a low-voltage clamp with a shock-absorbing and buffering structure.

[0006] The technical solution is as follows: A low-voltage cable clamp with a shock-absorbing and buffering structure includes a base, connecting blocks, sliders, limiting blocks, lower clamping blocks, elastic pads, fixing blocks, upper clamping blocks, fixing bolts, fixing nuts, and elastic pressure plates. Connecting blocks are fixedly connected to the left and right sides of the top of the base. Sliding grooves are opened near the center ends of the two connecting blocks. Sliding blocks are slidably connected to the inner sides of the sliding grooves of the two connecting blocks. Limiting blocks are fixedly connected to the outer ends of the two sliders away from the center. The two limiting blocks are slidably connected to the connecting blocks on the same side. A lower clamping block is fixedly connected between the tops of the two sliders. A groove is opened on the top of the base, and an elastic pad is placed in the groove. The top of the elastic pad contacts the bottom of the two sliders. A fixing block is fixedly connected to the right side of the lower clamping block. The top of the fixing block also slidably contacts another fixing block. An upper clamping block is fixedly connected to the left side of the upper fixing block. The upper clamping block is located directly above the lower clamping block. Fixing holes are opened in the middle of the two fixing blocks. Fixing bolts are inserted between the fixing holes of the two fixing blocks. Fixing nuts are threaded to the upper part of the fixing bolts. Elastic pressure plates are provided on the inner right sides of the upper and lower clamping blocks.

[0007] In addition, it is particularly preferred that the slide grooves of the two connecting blocks also include damping rubber strips, with damping rubber strips provided on both the front and rear sides of the slide grooves.

[0008] Furthermore, it is particularly preferred that the device also includes a screw and a positioning frame, with the screw located on the upper part of the elastic pad and the upper part of the screw threadedly connected to the lower part of the lower clamping block. The positioning frame is fixedly connected to the top of the base, and the elastic pad is located inside the positioning frame.

[0009] Furthermore, it is particularly preferred that the device also includes a butterfly washer, with the butterfly washer fitted on the upper part of the fixing bolt, and the butterfly washer being located between the fixing nut and the upper clamping block.

[0010] Furthermore, it is particularly preferred that the upper clamping block and the lower clamping block both contain conductive copper, with conductive copper provided on the inner left side of both the upper and lower clamping blocks.

[0011] In addition, it is particularly preferred that the base also includes a rubber pad, with two mounting holes on both the left and right sides of the base, and a rubber pad on the bottom of the base.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model achieves flexible clamping of the conductor by using the elastic pressure plates set on the inner sides of the upper and lower clamping blocks, avoiding the indentation, broken strands, or creep damage of aluminum conductors caused by traditional rigid crimping. At the same time, the butterfly washer provides continuous elastic preload at the bolt connection, effectively compensating for the attenuation of clamping force caused by temperature cycling or vibration. Then, through the cooperation of the slider, connecting block, and elastic pad, a certain distance of free sliding is achieved. Combined with the controllable frictional resistance provided by the damping rubber strip, it allows necessary displacement while suppressing uncontrolled swaying, enhancing shock resistance and impact resistance, and effectively reducing conductor fatigue damage.

[0013] 2. This utility model prevents the main contact surface from deteriorating due to fretting wear or oxidation by setting conductive copper, maintains a low-resistance conductive path, and prevents faults such as local overheating and arc erosion. Furthermore, the screw and positioning frame work together to absorb the impact energy from the upper wire or bracket. In addition, a rubber pad is set at the bottom of the base to further isolate the high-frequency vibration transmitted by the mounting base. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the planar structure of the components of this utility model, such as the fixing bolt, fixing nut, and butterfly washer.

[0016] Figure 3 This is a three-dimensional cross-sectional view of the connecting block, slider, and limiting block components of this utility model.

[0017] Figure 4This is a three-dimensional cross-sectional view of the components of this utility model, including the lower clamping block, elastic pad, and screw.

[0018] In the attached diagram: 1-base, 2-connecting block, 3-slider, 4-lower clamping block, 5-limiting block, 6-damping rubber strip, 7-elastic pad, 8-screw, 9-positioning frame, 10-fixing block, 11-fixing bolt, 12-upper clamping block, 13-fixing nut, 14-butterfly washer, 15-elastic pressure plate, 16-conductive copper, 17-mounting hole, 18-rubber pad. Detailed Implementation

[0019] Example: A low-voltage cable clamp with a shock-absorbing and buffering structure, such as Figures 1-4 As shown, the system includes a base 1, connecting block 2, slider 3, limiting block 5, lower clamping block 4, elastic pad 7, fixing block 10, upper clamping block 12, fixing bolt 11, fixing nut 13, and elastic pressure plate 15. Connecting blocks 2 are welded to the left and right sides of the top of the base 1. Each connecting block 2 has a groove near its center end, and sliders 3 are slidably connected to the inner sides of the grooves of each connecting block 2. Limiting blocks 5 are welded to the ends of each slider 3 away from the center, and both limiting blocks 5 are slidably connected to the connecting blocks 2 on the same side. A lower clamping block 4 is fixedly connected between the tops of the two sliders 3. The top of the base 1 has... A groove is provided, and an elastic pad 7 is provided in the groove. The top of the elastic pad 7 contacts the bottom of the two sliders 3. A fixing block 10 is welded to the right side of the lower clamping block 4. The top of the fixing block 10 also slides in contact with another fixing block 10. An upper clamping block 12 is welded to the left side of the upper fixing block 10. The upper clamping block 12 is located directly above the lower clamping block 4. Fixing holes are provided in the middle of the two fixing blocks 10. Fixing bolts 11 are inserted between the fixing holes of the two fixing blocks 10. Fixing nuts 13 are threadedly connected to the upper part of the fixing bolts 11. Elastic pressure plates 15 are provided on the right side of the inner side of the upper clamping block 12 and the lower clamping block 4.

[0020] like Figure 3 As shown, it also includes damping rubber strips 6, and damping rubber strips 6 are provided on both the front and rear sides of the sliding grooves of the two connecting blocks 2.

[0021] like Figure 1 , Figure 2 and Figure 4 As shown, it also includes a screw 8 and a positioning frame 9. The upper part of the elastic pad 7 is provided with the screw 8, and the upper part of the screw 8 is threadedly connected to the lower part of the lower clamping block 4. The positioning frame 9 is welded to the top of the base 1, and the elastic pad 7 is located inside the positioning frame 9.

[0022] like Figure 2 As shown, it also includes a butterfly washer 14. The butterfly washer 14 is fitted on the upper part of the fixing bolt 11. The butterfly washer 14 is located between the fixing nut 13 and the upper clamping block 12.

[0023] like Figure 1 and Figure 2As shown, it also includes conductive copper 16, and conductive copper 16 is provided on the inner left side of both the upper clamping block 12 and the lower clamping block 4.

[0024] like Figure 1 and Figure 2 As shown, it also includes a rubber pad 18. Two mounting holes 17 are opened on both the left and right sides of the base 1, and a rubber pad 18 is provided at the bottom of the base 1.

[0025] When it is necessary to fix the low-voltage conductor to this clamp, first place the conductor in the clamping space between the lower clamping block 4 and the upper clamping block 12, and then tighten the fixing nut 13 on the fixing bolt 11 so that the upper and lower fixing blocks 10 move closer to each other, thereby driving the upper clamping block 12 to press the conductor down.

[0026] During this process, the butterfly washer 14 is compressed, providing a continuous elastic preload to effectively compensate for the relaxation of the clamping force and prevent loosening of the contact. At the same time, the elastic pressure plate 15 provided on the inner right side of the upper clamping block 12 and the lower clamping block 4 fits against the surface of the wire and generates flexible contact when clamping, avoiding rigid pressure damage to the wire. Meanwhile, the conductive copper 16 on the inner left side of the upper clamping block 12 and the lower clamping block 4 prevents oxidation of the main contact surface due to micro-movement, ensuring low resistance conductivity.

[0027] When the clamp is subjected to external vibration and undergoes axial displacement, the lower clamp block 4 slides slightly horizontally in the groove of the connecting block 2 through the sliders 3 on both sides of the bottom. The damping rubber strips 6 set on the front and rear sides of the groove provide moderate frictional resistance, suppress uncontrolled shaking, and avoid repeated friction damage to the wire.

[0028] In the vertical direction, the bottom of the slider 3 is always pressed on the elastic pad 7, and the elastic pad 7 is placed in the groove of the base 1 and is limited by the positioning frame 9 to prevent displacement. When subjected to impact or vibration, the elastic pad 7 is compressed and deformed to absorb energy and play a shock absorption and buffering role. The screw 8 above it is threadedly connected to the lower clamping block 4 to enhance the structural stability.

[0029] In addition, the rubber pad 18 at the bottom of the base 1 further isolates the vibration transmitted by the mounting base, while increasing friction to prevent the wire clamp from slipping. The mounting holes 17 on both sides of the base 1 make it easy to fix it firmly to the support structure with bolts.

Claims

1. A low-voltage cable clamp with a shock-absorbing and buffering structure, characterized in that, It includes a base (1), connecting block (2), slider (3), limiting block (5), lower clamping block (4), elastic pad (7), fixing block (10), upper clamping block (12), fixing bolt (11), fixing nut (13) and elastic pressure plate (15). The top left and right sides of the base (1) are fixedly connected to the connecting block (2). The two connecting blocks (2) have a sliding groove near the center end. The slider (3) is slidably connected to the inner side of the sliding groove of the two connecting blocks (2). The two sliders (3) are fixedly connected to the limiting block (5) away from the center end. The two limiting blocks (5) are slidably connected to the connecting block (2) on the same side. The lower clamping block (4) is fixedly connected between the tops of the two sliders (3). A groove is provided at the top, and an elastic pad (7) is provided in the groove. The top of the elastic pad (7) contacts the bottom of the two sliders (3). A fixing block (10) is fixedly connected to the right side of the lower clamping block (4). The top of the fixing block (10) also slides in contact with another fixing block (10). An upper clamping block (12) is fixedly connected to the left side of the upper fixing block (10). The upper clamping block (12) is located directly above the lower clamping block (4). Fixing holes are provided in the middle of the two fixing blocks (10). A fixing bolt (11) is inserted between the fixing holes of the two fixing blocks (10). A fixing nut (13) is threaded on the upper part of the fixing bolt (11). An elastic pressure plate (15) is provided on the right side of the inner side of the upper clamping block (12) and the lower clamping block (4).

2. A low-voltage cable clamp with a shock-absorbing and buffering structure according to claim 1, characterized in that, It also includes damping rubber strips (6), and damping rubber strips (6) are provided on both the front and rear sides of the sliding grooves of the two connecting blocks (2).

3. A low-voltage cable clamp with a shock-absorbing and buffering structure according to claim 2, characterized in that, It also includes a screw (8) and a positioning frame (9). The upper part of the elastic pad (7) is provided with a screw (8). The upper part of the screw (8) is threadedly connected to the lower part of the lower clamping block (4). The top of the base (1) is fixedly connected with a positioning frame (9). The elastic pad (7) is located inside the positioning frame (9).

4. A low-voltage cable clamp with a shock-absorbing and buffering structure according to claim 3, characterized in that, It also includes a butterfly washer (14), with the butterfly washer (14) fitted on the upper part of the fixing bolt (11), and the butterfly washer (14) located between the fixing nut (13) and the upper clamping block (12).

5. A low-voltage cable clamp with a shock-absorbing and buffering structure according to claim 4, characterized in that, It also includes conductive copper (16), and conductive copper (16) is provided on the left side of the inner side of the upper clamping block (12) and the lower clamping block (4).

6. A low-voltage cable clamp with a shock-absorbing and buffering structure according to claim 5, characterized in that, It also includes a rubber pad (18), and two mounting holes (17) are opened on both the left and right sides of the base (1). A rubber pad (18) is provided at the bottom of the base (1).

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