Tapping device for power transmission and distribution flat cables

Abstract

A tapping device of a power transmission and distribution flat cable comprises a groove block, a horn strip and a convex pressing strip, a groove is formed in the groove block in the length direction of the groove block, a plurality of supporting blocks used for containing peeled main cables are slidably connected to the bottom face of the groove in the length direction of the groove, the upper end faces of the supporting blocks are arc-shaped faces, the upper end faces of the supporting blocks are flush, and the horn strip is arranged on the horn strip. The position of the supporting block is adjustable in the length direction of the groove; the horn strip is located above the supporting block, matched with the groove and capable of being inserted into the groove in the vertical direction, the lower portion of the convex pressing strip is located in the groove, and the upper portion of the convex pressing strip is detachably connected with the upper portion of the groove block through a connecting piece. The positions of the plurality of supporting blocks are adjusted according to the exposed length of the wire core, the phenomenon that the exposed wire core is bent downwards and the horn strip cannot be normally conducted with the wire core is avoided, the device is suitable for the phenomenon that the exposed length of the wire core is larger than or smaller than the length of the groove, the insulation skin of the main cable does not need to be removed repeatedly according to the length of the groove, and the production efficiency is improved. And the efficiency of branching the main cable out of the branch cable is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power transmission and distribution cable arrangement technical field, concretely is a kind of power transmission and distribution cable arrangement tapping device. BACKGROUND

[0002] The power transmission and distribution cable arrangement tapping device is an electrical connection device for tapping branch cables from main cables or busbars, and is usually used for cable branching and connection in power distribution systems.

[0003] The existing tapping device is generally a cable T-junction box, which includes a groove block for placing a stripped main cable, a convex pressing strip and a horn strip capable of conducting electricity. The horn strip presses the stripped main cable tightly in the groove block, and a stripped branch cable is placed on the horn strip. The branch cable is pressed tightly with the horn strip through the convex pressing strip, realizing reliable connection of the main cable and the branch cable together and ensuring efficient transmission and distribution of electricity.

[0004] However, in the prior art, the lengths of different types of groove blocks are different, and the structure of the groove block is fixed. Each time, the main cable line needs to be stripped at a certain position according to the length of the groove block. The stripping is manually operated. After stripping, the lengths of the exposed cores of the main cable line are different. If the length of the exposed core is greater than the length of the groove block, the core will be exposed, which will cause a risk of electric shock. If the exposed core is relatively short, the insulating sheath of the main cable line will be located in the groove of the groove block, and the exposed core will bend downward, causing a certain gap between the horn strip and the exposed core, which will affect the phenomenon that the horn strip conducts electricity to the stripped branch cable, thereby affecting the efficient transmission and distribution of electricity. SUMMARY

[0005] To solve the technical problems in the background art, the utility model provides a power transmission and distribution cable arrangement tapping device.

[0006] The technical scheme of the utility model is as follows:

[0007] A power transmission and distribution cable arrangement tapping device includes a groove block, a horn strip and a convex pressing strip. The groove block has a groove along its length direction. A plurality of support blocks for placing a stripped main cable are slidably connected to the bottom surface of the groove along its length direction. The upper end surface of the support block is arc-shaped. The upper end surfaces of the plurality of support blocks are flush, and the position of the support block along the length direction of the groove is adjustable.

[0008] The horn strip is located above the support block and is adapted to the groove, and can be inserted into the groove along the vertical direction. The lower part of the convex pressing strip is located in the groove, and the upper part of the convex pressing strip is detachably connected to the upper part of the groove block through a connecting piece.

[0009] Further, the central angle of the arc-shaped surface is less than π.

[0010] The ratio of the length of the groove to the length of the support block along the length direction of the groove is 3-6.

[0011] The specific structure of the horn strip is that one side of the horn strip close to the support block is a lower pressing surface, and the other side close to the convex pressing strip is an upper pressing surface, and both the lower pressing surface and the upper pressing surface are arc surfaces.

[0012] Further, the middle part of the lower pressing surface is provided with a lower pressing strip group, and the lower pressing strip group comprises a plurality of lower pressing strips arranged along the length direction of the horn strip.

[0013] Further, the two sides of the lower pressing strip group are symmetrically provided with a piercing part, and the piercing part comprises a plurality of piercing heads capable of conducting electricity, the plurality of piercing heads can be integrally formed with the horn strip, the bottom of the piercing head is connected with the lower pressing surface, and the sharp part of the piercing head extends outward.

[0014] The structure of the piercing head is that the piercing head is a conical structure, and the length of the piercing head is greater than the thickness of the lower pressing strip by 1-6mm.

[0015] Further, the convex pressing strip is a T-shaped structure, and the position of the convex pressing strip in the part of the groove along the vertical direction is adjustable.

[0016] The beneficial effects of the utility model lie in:

[0017] When the branch cable is branched from the main cable, the middle part of the main cable needs to be peeled first to form a peeled main cable, and the line core of the peeled main cable part is exposed, the main cable with the exposed line core is placed on the plurality of support blocks, the plurality of support blocks are adjusted in position according to the length of the exposed line core, so that the plurality of support blocks can be distributed equidistantly under the corresponding support of the main cable along the length of the exposed line core, the phenomenon that the exposed line core bends downward is avoided, the horn strip on it cannot conduct electricity normally, the phenomenon that the length of the exposed line core is greater than or less than the length of the groove is applicable, the insulating sheath of the main cable does not need to be removed many times according to the length of the groove, and the efficiency of branching the branch cable from the main cable is improved.

[0018] The convex pressing strip is pressed downward through the connecting piece, the peeled main cable and the peeled branch cable are reliably connected together, and the efficient transmission and distribution of electric power are ensured.

[0019] If the length of the exposed line core is less than the length of the groove, the two ends of the lower end surface of the horn strip also directly contact the insulating sheath of the main cable, so that the middle part of the lower end surface of the horn strip and the main cable with the exposed line core have a spacing of the thickness of the insulating sheath, and cannot be in good contact with the conductor, therefore, the piercing head is arranged on the lower pressing surface of the horn strip, the insulating sheath is pierced by the piercing head, the piercing head contacts the line core to conduct electricity, and the piercing head can also play a role in pressing and limiting the main cable, so that the phenomenon that the main cable moves or shakes in the groove is prevented. DRAWINGS

[0020] In the drawings:

[0021] Figure 1 is a structural schematic diagram;

[0022] Figure 2 is a front view;

[0023] Figure 3 is a partial structural schematic diagram;

[0024] Figure 4 is a structural schematic diagram of a horn strip;

[0025] Figure 5 is a Figure 4 front view;

[0026] Figure 6 is a Figure 5 enlarged structural schematic diagram at A in the middle;

[0027] Figure 7 is a structural schematic diagram of a support block, a stripping main cable, a horn strip, a branch cable and a convex pressing strip installation structure;

[0028] Figure 8 is a structural schematic diagram of a support block;

[0029] The components represented by the reference numerals in the drawings are as follows:

[0030] 1, groove block; 11, groove; 12, sliding groove; 2, support block; 21, sliding strip; 22, arc surface; 3, horn strip; 31, upper pressing surface; 32, lower pressing surface; 4, convex pressing strip; 41, horizontal block; 42, vertical block; 5, lower pressing strip; 6, piercing head; 7, stripping main cable; 8, branch cable; 9, connecting piece. DETAILED DESCRIPTION

[0031] Referring to Figure 1 , Figure 2 and Figure 3 , a tapping device for power distribution wire is provided, which comprises a groove block 1, a horn strip 3 and a convex pressing strip 4. The groove block 1 is provided with a groove 11 along its length direction. A plurality of support blocks 2 for placing a stripping main cable 7 are slidably connected to the bottom surface of the groove 11 along its length direction. The upper end surface of the support block 2 is an arc surface 22. The central angle of the arc surface 22 is less than π, which is convenient for placing most of the stripping main cables 7 of different models. The upper end surfaces of the plurality of support blocks 2 are flush, and the position of the support block 2 along the length direction of the groove 11 is adjustable.

[0032] Referring to Figure 3 , Figure 6 and Figure 8As shown in the drawings, the size of the support block 2 along the width direction of the groove 11 is adapted to the width of the groove 11, the two sides of the bottom surface of the groove 11 are provided with sliding grooves 12 along the length direction, and the two sides of the support block 2 are provided with sliding strips 21 adapted to the sliding grooves 12, so that the support block 2 can be slidably connected in the groove 11, and the positions of the plurality of support blocks 2 can be adjusted according to the length of the exposed core of the stripping main cable 7, so that the plurality of support blocks 2 can be distributed equidistantly along the length of the exposed core under the main cable, avoiding the downward bending of the exposed core, so that the phenomenon that the horn strip 3 on it cannot normally conduct electricity with the core, is avoided, and it is suitable for the phenomenon that the length of the exposed core is greater than or less than the length of the groove 11, and the insulation skin of the main cable does not need to be removed many times according to the length of the groove 11, thereby improving the efficiency of the main cable tapping the branch cable 8.

[0033] The structure of the groove 11 is that the ratio of the length of the groove 11 to the length of the support block 2 along the length direction of the groove 11 is 3-6, that is, two or more support blocks 2 can be placed in the groove 11.

[0034] As shown in the drawings, Figure 1 , Figure 3 and Figure 7 , the convex pressing strip 4 is a T-shaped structure, and the position of the convex pressing strip 4 located in the part of the groove 11 along the vertical direction is adjustable. The convex pressing strip 4 includes a transverse block 41 and a vertical block 42 connected vertically, the vertical block 42 is adapted to the groove 11, the transverse block 41 is arranged above the groove 11, the connecting piece 9 is a fastening bolt, the fastening bolt is connected with the transverse block 41, and the fastening bolt is screwed with the upper part of the groove block 1 through the transverse block 41, that is, the convex strip block can be adjusted in position in the groove 11 along the vertical direction through the connecting piece 9.

[0035] As shown in the drawings, Figure 1 , Figure 3 and Figure 4 , the horn strip 3 is a strip-shaped structure of conductive material, the length and width of the horn strip 3 are adapted to the length and width of the groove 11, the horn strip 3 is located above the support block 2, and it is adapted to the groove 11, and can be inserted in the groove 11 along the vertical direction, the lower part of the convex pressing strip 4 is located in the groove 11, and the upper part of the convex pressing strip 4 is detachably connected with the upper part of the groove block 1 through the connecting piece 9.

[0036] As shown in the drawings, Figure 4 , the specific structure of the horn strip 3 is that one side of the horn strip 3 close to the support block 2 is a lower pressing surface 32, and the other side close to the convex pressing strip 4 is an upper pressing surface 31, both the lower pressing surface 32 and the upper pressing surface 31 are arc surfaces 22. The middle part of the lower pressing surface 32 is provided with a group of lower pressing strips 5, and the group of lower pressing strips 5 includes a plurality of lower pressing strips 5 arranged along the length direction of the horn strip 3.

[0037] In the process of placing the stripped main cable 7 on the support block 2, the horn strip 3 is placed above the stripped main cable 7, so that the lower pressing surface 32 is in contact with the exposed core of the main cable 7, and then the stripped branch cable 8 is placed on the upper pressing surface 31 of the horn strip 3. The stripped branch cable 8 is stripped at the end, and there is no need to consider the phenomenon that the insulation of the branch cable 8 is in contact with the upper pressing surface 31, so that the stripped branch cable 8 is directly placed on the upper pressing surface 31. Finally, the lower end of the convex pressing strip 4 is pressed on the stripped branch cable 8, and the convex pressing strip 4 is pressed downward by the connecting piece 9, so that the stripped main cable 7 and the stripped branch cable 8 are reliably connected together, and the efficient transmission and distribution of power are ensured.

[0038] Referring to Figure 4 and Figure 5 As shown in the figure, if the length of the exposed core is less than the length of the groove 11, the two ends of the lower end surface of the horn strip 3 will also be in direct contact with the insulation of the main cable, so that the middle part of the lower end surface of the horn strip 3 is spaced apart from the main cable by the thickness of the insulation, and cannot be in good contact with the conductor. Therefore, the two sides of the lower pressing strip 5 group are symmetrically provided with a piercing part, which includes a plurality of piercing heads 6 capable of conducting electricity. The plurality of piercing heads 6 can be integrally formed with the horn strip 3. The piercing head 6 is a conical structure, the bottom of the piercing head 6 is connected with the lower pressing surface 32, and the sharp part of the piercing head 6 extends outward.

[0039] The piercing head 6 is arranged on the lower pressing surface 32 of the horn strip 3, which pierces the insulation and makes the piercing head 6 in contact with the core for conducting electricity. The piercing head 6 also has the function of pressing and limiting the main cable, preventing the main cable from moving or shaking in the groove 11. The structure of the piercing head 6 is that the piercing head 6 is a conical structure, and the length of the piercing head 6 is greater than the thickness of the lower pressing strip 5 by 1-6mm, which is suitable for piercing the insulation of low-voltage or medium-voltage main cables in this range.

Claims

1. A tapping device for power distribution cables, characterized in that The utility model relates to a cable stripping device, including recess block (1), horn strip (3) and convex pressure strip (4), recess block (1) is equipped with recess (11) along its length direction, the bottom surface of recess (11) is slid along its length direction and is connected with a plurality of support blocks (2) for placing the main cable (7) of stripping, the upper end surface of support block (2) is arc surface (22), the upper end surface of a plurality of support blocks (2) is flush, and support block (2) is adjustable along the length direction position of recess (11); Horn strip (3) is located above support block (2), and it is adapted with recess (11), can be inserted in recess (11) along the vertical direction, the lower part of convex pressure strip (4) is located in recess (11), and the upper part of convex pressure strip (4) is detachably connected with the upper part of recess block (1) through connecting piece (9).

2. A tapping device for power and telecommunications cables according to claim 1, characterized in that, The central angle corresponding to the arc surface (22) is less than pi.

3. A tapping device for power and communication cables according to claim 1, characterized in that The ratio of the length of the recess (11) to the length of the support block (2) along the length of the recess (11) is 3-6.

4. A tapping device for power and communication cables according to claim 1, characterized in that The side of horn strip (3) close to support block (2) is lower pressing surface (32), and the side close to convex pressure strip (4) is upper pressing surface (31), and the lower pressing surface (32) and upper pressing surface (31) are arc surface (22).

5. A tapping device for power and telecommunications cables according to claim 4, characterized in that The middle part of the lower pressing surface (32) is provided with a lower pressing strip (5) group, and the lower pressing strip (5) group includes a plurality of lower pressing strips (5) arranged along the length direction of the horn strip (3).

6. A tapping device for power and telecommunications cables according to claim 5, characterized in that The two sides of the lower pressing strip (5) group are symmetrically provided with a puncture part, and the puncture part includes a plurality of puncture heads (6) capable of conducting electricity, the bottom of the puncture head (6) is connected with the lower pressing surface (32), and the sharp part of the puncture head (6) extends outward.

7. A tapping device for power and telecommunications cables according to claim 6, characterized in that, The puncture head (6) is a conical structure, and the length of the puncture head (6) is greater than the thickness of the lower pressing strip (5) by 1-6mm.

8. A tapping device for power and communication cables according to claim 1, characterized in that The convex pressure strip (4) is a T-shaped structure, and the position of the convex pressure strip (4) in the vertical direction is adjustable.

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