Wire clamp

Abstract

The invention discloses a wire clamp which comprises a main box body, a wire clamp shell and a wire clamp seat arranged in the wire clamp shell, an installation groove is formed in the wire clamp shell, the wire clamp seat is placed in the installation groove, two inner wire clamping through holes are formed in the wire clamp seat, more than one first insertion groove is formed above each inner wire clamping through hole in parallel, and the first insertion groove and the second insertion groove are arranged in parallel. An upper aluminum pressing column is inserted in each first inserting groove, more than one upper thorn piece is vertically arranged below each upper aluminum pressing column, an aluminum sliding block is connected below each inner wire clamping through hole in an up-down sliding mode, more than one second inserting groove is formed in the upper portion of each aluminum sliding block in parallel, and a lower aluminum pressing column is inserted in each second inserting groove. More than one lower stabbing piece is vertically arranged above each lower aluminum pressing column, the lower stabbing pieces and the upper stabbing pieces are symmetrically arranged, a torque screw rod is rotatably connected below each aluminum sliding block, and the screw rod part of the torque screw rod is in threaded connection with the bottom of the wire clamp seat. According to the structure, the cable clamping effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution equipment, in particular to a wire clamp. Background Art

[0002] The cable is installed on the pole or building through the fixing device. The cable terminal is generally fixed by bending the cable end around the insulator (street code porcelain roll) and bundling or fixing the separated cable ends under tension. The existing cable is fixed by the wire clamp.

[0003] Existing wire clamps, such as the one disclosed in patent application number: 201710947422.3, are composed of a wire clamping spring and a support seat; the support seat is provided with a support shaft, and an insertion port is provided below the support shaft; the wire clamping spring is in a circular shape, surrounding the support shaft, and is used to press down the wire inserted in the insertion port. Press the top of the wire clamping spring, and the wire clamping spring rotates around the support shaft, and the bottom end of the wire clamping spring presses down the wire, and the wire is clamped between the bottom end of the wire clamping spring and the support seat. The present invention utilizes the principle of leverage to enable the wire clamping spring to exert a large downward pressure on the wire inserted into the insertion port to prevent it from loosening. When withdrawing the wire, the wire withdrawal lever is pushed to loosen the wire clamping spring and the buckling mechanism on the support seat. The operation is simple and convenient. However, this type of wire clamp is generally made of iron material. However, considering that when using iron material to clamp the cable, after long-term use, the stability of thermal expansion and contraction of iron material is poor, and it is easy to loosen and cannot clamp the cable. In addition, this type of wire clamp has the problem of insufficient clamping force when clamping the cable, so it needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a wire clamp to solve the problem mentioned in the background art that the existing wire clamps are easy to loosen after long-term use and cannot clamp the cable, and this type of wire clamp has insufficient clamping force when clamping the cable.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wire clamp, including a main box body, including a wire clamp shell and a wire clamp seat arranged in the wire clamp shell, the wire clamp shell is provided with a mounting groove, the wire clamp seat is placed in the mounting groove, the wire clamp seat is provided with two inner wire clamping through holes that penetrate the wire clamp seat longitudinally, one or more slots are arranged in parallel above each inner wire clamping through hole, an upper aluminum pressure column is inserted in each slot, and one or more upper thorns are vertically arranged below each upper aluminum pressure column, and one or more upper thorns are arranged in each inner wire clamping through hole. An aluminum slider is connected to slide up and down below, and one or more slots are arranged in parallel above the aluminum slider, and a lower aluminum pressure column is inserted in each slot, and one or more lower thorns are vertically arranged above each lower aluminum pressure column, and the lower thorns are symmetrically arranged with the upper thorns. A torque screw is rotatably connected below each aluminum slider, and the screw portion of the torque screw is threadedly connected to the bottom of the wire clamp seat, the screw portion of the torque screw is partially located on the outside of the bottom of the wire clamp shell, and the head of the torque screw is placed on the outside of the bottom of the wire clamp shell.

[0006] Preferably, in order to facilitate disassembly, the wire clamp housing includes an insulating shell and a side flip cover which is sleeved on the outside of the insulating shell, the wire clamp seat is placed in the insulating shell, the mounting groove is placed in the insulating shell, the insulating shell is provided with two transversely penetrating first through holes, the first through holes are located in the mounting groove, two second through holes are longitudinally arranged below the insulating shell, and each second through hole is connected to a first through hole, a mounting notch is provided on the side of one of the first through holes, the side flip cover is hinged to one side of the insulating shell by a hinge shaft and is used to close the mounting notch, a limiting protrusion is provided on the other side of the insulating shell, a limiting through groove which is engaged with the limiting protrusion is provided on the side flip cover, two transversely penetrating lower half U-shaped notches are provided on the side flip cover, the lower half U-shaped notches cooperate with the upper half of the first through hole to form a wire groove for plugging in cables, the inner clamp wire through hole is placed in the wire groove, and the torque screw passes through the second through hole.

[0007] Preferably, in order to facilitate assembly, an installation notch 2 is provided on one side of one of the inner wire clamping through holes and is aligned with the installation notch 1, an assembly notch is provided at the front and rear of the other side of the inner wire clamping through hole provided with the installation notch 2, a raised guide strip is provided above each assembly notch, an insertion groove is provided on the side of one of the aluminum sliders, and sliding guide grooves cooperating with the guide strip are provided on the front and rear sides of the insertion groove.

[0008] Preferably, in order to reduce resistance, a layer of grease capable of reducing resistance is coated inside the inner wire clamping through hole, and a layer of silver plating is coated on the surface of the torque screw.

[0009] Preferably, in order to facilitate the limiting of the torque screw and the aluminum slider and facilitate later disassembly, a positioning groove is provided at the bottom of the aluminum slider, and a guide notch connected to the positioning groove is provided on the side of the aluminum slider, and one end of the guide notch is placed on the side of the aluminum slider, and a lifting column is provided at the head of the torque screw, and a limiting column that can be inserted into the guide notch is provided below the lifting column. After the limiting column is inserted from the guide notch, it can be clamped in the positioning groove, and a retaining spring that is clamped on the outside of the lifting column is also inserted on the aluminum slider, and the retaining spring includes two spaced-apart retaining strips, and a clamping opening for clamping the lifting column is formed between the two retaining strips, and the moving direction of the retaining spring is perpendicular to the moving direction of the torque screw on the guide notch.

[0010] Preferably, in order to compress the cable, the lower end of the upper thorn piece and the upper end of the lower thorn piece are both pointed structures.

[0011] Preferably, in order to improve the fixing effect, the upper thorn piece is interference fit with the first slot, and the lower thorn piece is interference fit with the second slot.

[0012] Preferably, in order to achieve positioning of the outside of the cable, an upper semicircular limiting ring is provided on the upper outer sides of each first through hole, and a lower semicircular limiting ring is provided on the upper outer sides of each lower half U-shaped notch. Each upper semicircular limiting ring cooperates with the lower semicircular limiting ring to form a circular limiting ring for limiting the cable.

[0013] Preferably, in order to facilitate closing the unused second through hole, a screw cap is screwed onto the outside of the second through hole, two L-shaped positioning grooves are symmetrically arranged front to back on the outside of the second through hole, and a positioning block cooperating with the L-shaped positioning groove is arranged on the inside of the screw cap.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The distance between the lower thorn piece and the upper thorn piece can be adjusted by rotating the torque screw exposed below, so that cables with different diameters can be clamped. Compared with the existing wire clamps, this structure clamps the passed cables by puncturing up and down, making the final clamping force stronger and less likely to loosen;

[0016] 2. In this structure, since the aluminum slider is made of aluminum and the wire clamp seat is also made of aluminum alloy, the overall thermal expansion and contraction stability is better, and a second installation notch is set on the side of the wire clamp seat, so that the deformation stress of the elastic aluminum alloy conforms to Hooke's theorem, and can rebound to compensate for the deformation of the wire clamp seat, so that it deforms slowly, shortens the deformation time, and finally ensures that its clamping effect on the cable is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the wire clamp housing disclosed in Example 1 when two screw caps are separated from other components;

[0018] Figure 2 It is a schematic structural diagram of a wire clamp disclosed in Example 1 when the clamp base insulating shell, the side flip cover and other components are separated;

[0019] Figure 3 It is a structural schematic diagram of the clamp base insulating housing disclosed in Example 1;

[0020] Figure 4 It is a structural schematic diagram of the side flip cover disclosed in Example 1;

[0021] Figure 5 This is a schematic diagram of the structure of a wire clamp in Example 1 when no wire clamp housing is installed;

[0022] Figure 6 for Figure 5 Schematic diagram of the structure when the center line clamp seat is separated from other components;

[0023] Figure 7 It is a schematic diagram of the structure when one of the aluminum sliders disclosed in Example 1 is combined with the lower aluminum pressure column and the retaining spring is separated from the aluminum slider;

[0024] Figure 8 This is a schematic diagram of the structure of the aluminum slider, the retaining spring and the torque screw when they are separated in Example 1. ;

[0025] Fig. 9 It is a structural schematic diagram of the retaining spring in Example 1;

[0026] Fig.10 Schematic diagram of the bottom structure of the aluminum slider in Example 1.

[0027] In the figure: the wire clamp housing 1, the insulating shell of the clamp seat 101, the side flip cover 102, the first through hole 103, the installation notch 104, the wire clamp seat 2, the inner wire clamping through hole 201, the installation slot 3, the slot 1 4, the upper aluminum pressure column 5, the upper thorn piece 6, the aluminum slider 7, the plug-in slot 701, the slot 2 8, the lower aluminum pressure column 9, the lower thorn piece 10, the torque screw 11, the limiting protrusion 12, the limiting through groove 13, the lower U-shaped notch 14, the installation notch 2 15, the guide strip 16, the plug-in groove 17, the sliding guide groove 18, the assembly notch 19, the positioning groove 20, the guide notch 21, the limiting column 22, the rising column 23, the retaining spring 24, the clamping strip 25, the clamping mouth 26, the upper semicircular limiting ring 27, the lower semicircular limiting ring 28, the screw cap 29, the L-shaped positioning groove 291, the positioning block 292, and the hinge shaft 30. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] See also Figure 1-10 A wire clamp disclosed in this embodiment includes a wire clamp housing 1 and a wire clamp seat 2 arranged in the wire clamp housing 1, wherein the wire clamp housing 1 is provided with a mounting groove 3, and the wire clamp seat 2 is placed in the mounting groove 3, and the wire clamp seat 2 is provided with two inner wire clamping through holes 201 which penetrate the wire clamp seat 2 longitudinally, and above each inner wire clamping through hole 201, one or more slots 4 are arranged in parallel, and an upper aluminum pressure column 5 is inserted in each slot 4, and below each upper aluminum pressure column 5, one or more upper thorn pieces 6 are vertically arranged, and below each inner wire clamping through hole 201, an aluminum slider 7 is connected to slide up and down, and above the aluminum slider 7, one or more slots 8 are arranged in parallel, and in each slot 8, a lower aluminum pressure column 9 is inserted, and the upper There are more than one lower thorn piece 10 vertically arranged on the square, and the lower thorn piece 10 is symmetrically arranged with the upper thorn piece 6. A torque screw 11 is rotatably connected to the bottom of each aluminum slider 7, and the screw portion of the torque screw 11 is threadedly connected to the bottom of the wire clamp seat 2. The screw portion of the torque screw 11 is partially located on the outside of the bottom of the wire clamp housing 1, and the head of the torque screw 11 is placed on the outside of the bottom of the wire clamp housing 1. In this embodiment, a torque nut is arranged below the torque screw 11 to control the rotational torque of the torque screw 11 and ensure that the torque of the torque screw 11 is not too large during the rotation process. When it is too large, it is easy to cause the upper lower thorn piece 10 to be inserted too deeply into the cable and easily puncture and damage the cable surface. When it is too small, it is easy to make the contact area between the lower thorn piece 10 and the cable too small to clamp the cable.

[0031] Preferably, in order to facilitate disassembly, the wire clamp housing 1 includes an insulating shell 101 and a side flip cover 102 sleeved outside the insulating shell 101, the wire clamp seat 2 is placed in the insulating shell 101, the mounting groove 3 is placed in the insulating shell 101, and the insulating shell 101 is provided with two transversely penetrating first through holes 103, the first through holes 103 are located in the mounting groove 3, and two second through holes 202 are longitudinally arranged below the insulating shell 101, and each second through hole 202 is connected to a first through hole 103, and a mounting notch 10 is arranged on the side of one of the first through holes 103. 4. The side flip cover 102 is hinged to one side of the insulating shell 101 through a hinge shaft 30 and is used to close the installation notch 104. A limiting protrusion 12 is set on the other side of the insulating shell 101. A limiting through groove 13 engaged with the limiting protrusion 12 is set on the side flip cover 102. Two lower half U-shaped notches 14 that pass through horizontally are set on the side flip cover 102. The lower half U-shaped notches 14 cooperate with the upper half of the first through hole 103 to form a wire groove for plugging in cables. The inner clamping through hole 201 is placed in the wire groove, and the torque screw 11 passes through the second through hole 202.

[0032] Preferably, in order to facilitate assembly, a mounting notch 2 15 aligned with the mounting notch 104 is provided on one side of one of the inner wire clamping through holes 201, and an assembly notch 19 is provided at the front and rear of the other side of the inner wire clamping through hole 201 provided with the mounting notch 2 15, and a raised guide bar 16 is provided above each assembly notch 19, and a plug-in groove 17 is provided on the side of one of the aluminum sliders 7, and sliding guide grooves 18 cooperating with the guide bar 16 are provided on the front and rear sides of the plug-in groove 17. In this embodiment, the assembly notch 19 can facilitate installation and assembly, and at the same time, it can increase the contact area between the aluminum slider 7 and the inner wire clamping through hole 201, thereby reducing the conductive resistance.

[0033] Preferably, in order to reduce resistance, a layer of grease capable of reducing resistance is coated inside the inner wire clamping through hole 201, and a silver plating layer is coated on the surface of the torque screw 11, which can reduce resistance. The grease is an electrical composite grease.

[0034] like Figure 7-10As shown, as a preference, in order to facilitate the limiting of the torque screw 11 and the aluminum slider 7 and facilitate later disassembly, a positioning groove 20 is provided at the bottom of the aluminum slider 7, and a guide notch 21 connected to the positioning groove 20 is provided on the side of the aluminum slider 7, and one end of the guide notch 21 is placed on the side of the aluminum slider 7, and the head of the torque screw 11 is provided with an along-lifting column 23, and a limiting column 22 capable of being inserted into the guide notch 21 is provided below the along-lifting column 23, and the limiting column 22 can be stuck in the positioning groove 20 after being inserted from the guide notch 21, and a retaining spring 24 stuck outside the along-lifting column 23 is also inserted on the aluminum slider 7, and the retaining spring 24 includes two spaced-apart clamping strips 25, and a clamping opening 26 for clamping the along-lifting column 23 is formed between the two clamping strips 25, and the moving direction of the retaining spring 24 Perpendicular to the moving direction of the torque screw 11 on the guide notch 21, in this embodiment, the retaining spring 24 is a U-shaped structure as a whole, and a plug-in groove 701 for plugging with the clamping strip 25 is provided on the side of the aluminum slider 7. During installation, the torque screw 11 is first inserted into the second through hole 202 and then screwed with the threaded hole on the wire clamp seat 2. The head inserted into the inner wire clamp through hole 201 is inserted from the side of the guide notch 21 and moved into the positioning groove 20 and placed in the positioning groove 20. Then, the clamping strip 25 on the retaining spring 24 is inserted from the plug-in groove 701, and the clamp 26 is used to limit the entire torque screw 11 in the aluminum slider 7 so that it will not fall out, but it can rotate. During operation, by rotating the torque screw 11, the corresponding aluminum slider 7 is moved up and down in the inner wire clamp through hole 201 to clamp the wire inserted in the first through hole 103.

[0035] Preferably, in order to compress the cable, the lower end of the upper thorn piece 6 and the upper end of the lower thorn piece 10 are both pointed structures. In this embodiment, since the lower end of the upper thorn piece 6 and the upper end of the lower thorn piece 10 are both pointed, they can be directly inserted into the cable in the first through hole 103 to compress and fix the cable. Preferably, in order to improve the fixing effect, the upper thorn piece 6 has an interference fit with the slot 1 4, and the lower thorn piece 10 has an interference fit with the slot 2 8. The lower thorn piece 10 and the upper thorn piece 6 are both made of tin bronze alloy with silver-plated surface. The wire clamp seat 2 is made of 6061 alloy (i.e., aluminum alloy) with silver-plated surface, and the coating thickness of the lower thorn piece 10 and the upper thorn piece 6 should not be less than 10μm.

[0036] Preferably, in order to achieve positioning of the outside of the cable, an upper semicircular limiting ring 27 is provided on the upper outer sides of each first through hole 103, and a lower semicircular limiting ring 28 is provided on the upper outer sides of each lower half U-shaped notch 14. Each upper semicircular limiting ring 27 cooperates with the lower semicircular limiting ring 28 to form a circular limiting ring for limiting the cable. By setting the circular limiting ring, the exposed wires can be limited, and it has a waterproof effect to prevent rainwater from entering the first through hole 103.

[0037] like Figure 1 As shown, preferably, in order to facilitate closing the unused second through hole 202, a screw cap 29 is screwed onto the outside of the second through hole 202, and two L-shaped positioning grooves 291 are symmetrically arranged on the front and back of the outer side of the second through hole 202, and a positioning block 292 cooperating with the L-shaped positioning groove 291 is arranged on the inner side of the screw cap 29. When the second through hole 202 is not needed, the positioning block 292 in the screw cap 29 can be first inserted into the notch of the L-shaped positioning groove 291, and then after rotation, the positioning block 292 can be stuck in the groove of the L-shaped positioning groove 291 to achieve the closure of the second through hole 202.

[0038] The structure is provided with a novel wire clamp, which includes a wire clamp housing 1 and a wire clamp seat 2 arranged in the wire clamp housing 1, and the wire clamp seat 2 is provided with two inner wire clamping through holes 201, an upper thorn piece 6 is provided above the inner wire clamping through hole 201, and an aluminum slider 7 made of aluminum material is slidably connected in the inner wire clamping through hole 201, and an upwardly extending lower thorn piece 10 is provided above the aluminum slider 7, and the lower thorn piece 10 and the upper thorn piece 6 matched up and down are used to clamp the cable inserted into the inner wire clamping through hole 201 horizontally up and down, and the torque screw 11 exposed below is rotated to adjust the position between the lower thorn piece 10 and the upper thorn piece 6 Spacing, so that it can clamp cables of different diameters. Compared with the existing wire clamps, this structure clamps the passed cables by piercing up and down, so that the final clamping force is stronger and less likely to loosen. In addition, in this structure, since the aluminum slider 7 is made of aluminum and the wire clamp seat 2 is also made of aluminum alloy, the overall thermal expansion and contraction stability is better, and an installation notch 15 is set on the side of the wire clamp seat 2, so that the deformation stress of the elastic aluminum alloy conforms to Hooke's law, and can rebound to compensate for the deformation of the wire clamp seat 2, so that it deforms slowly, shortens the deformation time, and finally ensures that its clamping effect on the cable is more stable.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wire clamp, comprising a wire clamp housing (1) and a wire clamp seat (2) arranged in the wire clamp housing (1), characterized in that: The wire clamp housing (1) is provided with a mounting groove (3), the wire clamp seat (2) is placed in the mounting groove (3), the wire clamp seat (2) is provided with two inner wire clamping through holes (201) which penetrate the wire clamp seat (2) longitudinally, one or more slots (4) are arranged in parallel above each inner wire clamping through hole (201), an upper aluminum pressure column (5) is inserted into each slot (4), and one or more upper thorn pieces (6) are vertically arranged below each upper aluminum pressure column (5), and an aluminum slider (7) is slidably connected to the bottom of each inner wire clamping through hole (201), and the upper portion of the aluminum slider (7) is provided with a plurality of upper thorn pieces (6). One or more slots (8) are arranged in parallel on each side, a lower aluminum pressure column (9) is inserted into each slot (8), one or more lower thorns (10) are arranged vertically above each lower aluminum pressure column (9), the lower thorns (10) are arranged symmetrically with the upper thorns (6), a torque screw (11) is rotatably connected below each aluminum slider (7), the screw portion of the torque screw (11) is threadedly connected to the bottom of the wire clamp seat (2), the screw portion of the torque screw (11) is partially located on the outside of the bottom of the wire clamp housing (1), and the head of the torque screw (11) is placed on the outside of the bottom of the wire clamp housing (1).

2. A wire clamp according to claim 1, characterized in that: The wire clamp housing (1) comprises an insulating shell (101) and a side flip cover (102) sleeved on the outside of the insulating shell (101); the wire clamp seat (2) is placed in the insulating shell (101); the mounting groove (3) is placed in the insulating shell (101); two transversely extending first through holes (103) are arranged on the insulating shell (101); the first through holes (103) are located in the mounting groove (3); two second through holes (202) are longitudinally arranged below the insulating shell (101); each second through hole (202) is connected to a first through hole (103); a mounting notch (104) is arranged on the side of one of the first through holes (103); The side flip cover (102) is hinged to one side of the insulating shell (101) through a hinge shaft (30) and is used to close an installation notch (104). A limiting protrusion (12) is provided on the other side of the insulating shell (101). A limiting through groove (13) engaged with the limiting protrusion (12) is provided on the side flip cover (102). Two lower half U-shaped notches (14) extending transversely therethrough are provided on the side flip cover (102). The lower half U-shaped notches (14) cooperate with the upper half of the first through hole (103) to form a wire groove for plugging in cables. The inner wire clamping through hole (201) is placed in the wire groove, and the torque screw (11) passes through the second through hole (202).

3. A wire clamp according to claim 2, characterized in that: A second mounting notch (15) aligned with the first mounting notch (104) is provided on one side of one of the inner wire clamping through holes (201), and an assembly notch (19) is provided at the front and rear of the other side of the inner wire clamping through hole (201) provided with the second mounting notch (15), and a raised guide bar (16) is provided above each assembly notch (19), and a plug-in groove (17) is provided on the side of one of the aluminum slide blocks (7), and sliding guide grooves (18) cooperating with the guide bar (16) are provided at the front and rear sides of the plug-in groove (17).

4. A wire clamp according to claim 3, characterized in that: A layer of lubricating grease capable of reducing electrical resistance is coated inside the inner wire clamping through hole (201), and a layer of silver plating is coated on the surface of the torque screw (11).

5. A wire clamp according to claim 1 or 2, characterized in that: A positioning groove (20) is provided at the bottom of the aluminum slide block (7), a guide notch (21) connected to the positioning groove (20) is provided on the side of the aluminum slide block (7), and one end of the guide notch (21) is placed on the side of the aluminum slide block (7), a lifting column (23) is provided at the head of the torque screw (11), and a limiting column (22) capable of being inserted into the guiding notch (21) is provided below the lifting column (23), and the limiting column (22) ) can be stuck in the positioning groove (20) after being inserted from the guide notch (21), and a retaining spring (24) that is stuck outside the lifting column (23) is also inserted on the aluminum slider (7), and the retaining spring (24) includes two spaced-apart retaining strips (25), and a clamping opening (26) for clamping the lifting column (23) is formed between the two retaining strips (25), and the moving direction of the retaining spring (24) is perpendicular to the moving direction of the torque screw (11) on the guide notch (21).

6. A wire clamp according to claim 1 or 2, characterized in that: The lower end of the upper thorn piece (6) and the upper end of the lower thorn piece (10) are both pointed structures.

7. A wire clamp according to claim 1, 2 or 3, characterized in that: The upper thorn piece (6) is interference fit with the first slot (4), and the lower thorn piece (10) is interference fit with the second slot (8).

8. A wire clamp according to claim 2, characterized in that: An upper semicircular limiting ring (27) is provided on the upper outer sides of each first through hole (103), and a lower semicircular limiting ring (28) is provided on the upper outer sides of each lower half U-shaped notch (14). Each upper semicircular limiting ring (27) cooperates with the lower semicircular limiting ring (28) to form a circular limiting ring for limiting the cable.

9. A wire clamp according to claim 2, 3 or 4, characterized in that: A screw cap (29) is screwed onto the outside of the second through hole (202), two L-shaped positioning grooves (291) are symmetrically arranged on the outside of the second through hole (202), and a positioning block (292) matching the L-shaped positioning groove (291) is arranged on the inside of the screw cap (29).

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