CN204361307U - A puncture fastener for following electric transmission line gets electricity - Google Patents

Abstract

The utility model provides a puncture fastener for following electric transmission line and get electricity, includes: the plastic C-shaped fixing frame (2) is provided with a transverse V-shaped groove on the surface of one opening end, a stepped vertical hole and a stepped transverse hole which are mutually communicated are formed at the bottom of the V-shaped groove, and an axial threaded hole pointing to the V-shaped groove is formed at the other opening end; a bolt-shaped plastic pressing handle (3) screwed on the threaded hole of the C-shaped fixing frame; the wiring terminal (4) is arranged in a hole at the bottom of the V-shaped groove of the C-shaped fixing frame; a puncture handle (1); the puncture handle 1 penetrates into the C-shaped fixing frame from the large end of the stepped vertical hole at one end of the C-shaped fixing frame, the outer surface threads of the threaded sleeve are matched with the vertical threaded hole of the wiring terminal, and the thimble penetrates out of the V-shaped groove of the C-shaped fixing frame. The utility model discloses can install on power transmission line and get the electricity under the condition of not breaking cable insulation sheath, and structural design makes the thimble obtain a pressure that lasts to it can not become flexible to have ensured the reliable contact of thimble and cable conductor, gets the electrical contact good.

Description

A piercing clip for taking power from transmission lines

technical field

The utility model relates to a puncture clamp which can take power from a low-voltage power cable with an insulating sheath and complete power supply to equipment without changing the power transmission line.

Background technique

Sometimes it is necessary to install some measuring equipment on the transmission line. Some measuring equipment needs to take power from the transmission line, and generally low-voltage power cables have insulating sheaths. In the past, the insulation sheath of the cable was broken, and the power supply was drawn out through the break through the cable, and then connected to the equipment for power supply. This approach not only has the possibility of poor contact, but also destroys the integrity of the cable, and it is necessary to cut off the power supply for safe operation.

The Chinese Utility Model Patent No. ZL200820057939.1 discloses "A Wire Piercing Clip". There is the possibility of poor contact in the wire clip, especially when installed on an overhead line that is easily blown by the wind, the problem is more serious.

Contents of the invention

The technical problem to be solved by the utility model is to provide a puncture clamp for taking power from the transmission line, which can be installed on various specifications of the power transmission line without breaking the cable insulation sheath and can be used to get power from the cable. The power is taken from the top, and the structural design enables the thimble to obtain a continuous pressure, thus ensuring that the reliable contact between the thimble and the cable wire will not be loosened, and the electrical contact is good.

To solve the problems of the technologies described above, the technical scheme adopted by the utility model is as follows:

A puncture clamp for taking power from a transmission line, characterized by comprising:

A plastic C-shaped fixing frame 2, in the shape of a C, with a horizontal V-shaped groove on the surface of one opening end, and a stepped vertical hole and a stepped horizontal hole connected to each other at the bottom of the V-shaped groove, and a pointing V-shaped hole at the other open end. Axial threaded hole of the slot;

A plastic compression handle 3, which is bolt-shaped, is screwed on the axial threaded hole at one end of the C-shaped fixed frame;

A connecting terminal 4 is a conductive stepped square cylinder, which is detachably installed in the ladder vertical hole and the ladder horizontal hole at the bottom of the V-shaped groove at the open end of the C-shaped fixed frame. The large end of the connecting terminal is provided with a vertical screw thread The hole and the small end are provided with counterbore holes, which can be used to fix the electric wires with crimping screws to realize electrical connection;

A puncture handle 1, including a plastic shell, is a cylinder with a cover, with a round hole at the bottom of the cylinder, and a non-circular hole in the inner hole of the cylinder; a screw sleeve b, which is threaded on the outside and has an axial circle in the middle A tubular structure with a through-hole, the tail is a flat cylinder with a non-circular inner hole and a plastic handle, and the front end of the screw sleeve passes through the round hole at the bottom of the cylinder from the plastic shell; a thimble a is a pointed and slender cylinder, It is a flat cylinder with a non-circular inner hole slidingly fitted with a plastic handle. The thimble passes through the inner hole of the screw sleeve from the plastic shell and exposes a needle tip of a certain length; a compression spring c is installed on the back end of the thimble in the plastic shell and the seal between covers;

The puncture handle 1 penetrates through the big end of the stepped vertical hole at one end of the C-shaped fixed frame, the outer thread of the screw sleeve matches the vertical threaded hole of the terminal, and the thimble passes through the V-shaped groove of the C-shaped fixed frame.

Use process:

Use the C-shaped bracket and the compression handle to fix the cable clamp and the cable, place the cable at the bottom of the V-shaped limit groove of the C-type bracket, turn the compression handle until the cable is compressed; the C-type bracket is placed inside The connection terminal is connected with the power-taking wire and has a threaded hole matched with the screw sleeve of the puncture handle. When the puncture handle rotates, the handle is screwed into the cable direction due to the action of the thread, and when the thimble is screwed in until the thimble touches the cable insulation sleeve, the thimble retreats, and the spring compresses. The thimble cannot retreat until the cover boss in the handle pushes against the end of the thimble, and the thimble continues to turn the handle to penetrate the insulating sleeve of the cable and touch the wire.

Beneficial effects: the core of the utility model is that when the thimble contacts the cable conductor, the spring is in a compressed state to provide the thimble with a pressure on the cable conductor, ensuring that the thimble will not cause poor contact between the thimble and the conductor due to the swing of the cable. Because the thimble, screw sleeve and terminal are all metal parts, the voltage of the cable conductor can be transmitted to the power-taking wire through these parts, and the power-taking wire is connected to the equipment to complete the power supply .

The utility model can be used to take electricity conveniently from the cable with the insulating sheath, easy to install and operate, allows electrified operation, has the advantages of long-term operation and reliable contact when the cable swings. At the same time, the damage to the cable is small, and the puncture hole can be blocked by the shrinkage of the insulating sheath of the cable after the wire-taking clamp is removed.

Description of drawings

Fig. 1 is the structural representation of the puncture handle 1 provided by the utility model;

Fig. 2 is a schematic diagram of the overall structure of the puncture clip provided by the utility model;

Fig. 3 is a schematic diagram of the connection between the puncture handle and the terminal provided by the utility model.

The meanings of reference numerals in the figure are: 1-puncture handle, 2-C-type fixed frame, 3-compression handle, 4-connection terminal, a-thimble, b-screw sleeve, c-spring, d-plastic handle.

Detailed ways

As shown in Figure 2, the embodiment of the puncture wire clip for taking power from the transmission line of the present utility model includes:

A plastic C-shaped fixing frame 2, in the shape of a C, with a horizontal V-shaped groove on the surface of one opening end, and a stepped vertical hole and a stepped horizontal hole connected to each other at the bottom of the V-shaped groove, and a pointing V-shaped hole at the other open end. Axial threaded hole of the slot;

A plastic compression handle 3, which is bolt-shaped, is screwed on the axial threaded hole at one end of the C-shaped fixed frame;

A connecting terminal 4 is a conductive stepped square cylinder, which is detachably installed in the ladder vertical hole and the ladder horizontal hole at the bottom of the V-shaped groove at the open end of the C-shaped fixed frame. The large end of the connecting terminal is provided with a vertical screw thread The hole and the small end are provided with counterbore holes, which can be used to fix the electric wires with crimping screws to realize electrical connection;

A puncture handle 1, including a plastic shell, is a cylinder with a cover, with a round hole at the bottom of the cylinder, and a non-circular hole in the inner hole of the cylinder; a screw sleeve b, which is threaded on the outside and has an axial circle in the middle A tubular structure with a through-hole, the tail is a flat cylinder with a non-circular inner hole and a plastic handle, and the front end of the screw sleeve passes through the round hole at the bottom of the cylinder from the plastic shell; a thimble a is a pointed and slender cylinder, It is a flat cylinder with a non-circular inner hole slidingly fitted with a plastic handle. The thimble passes through the inner hole of the screw sleeve from the plastic shell and exposes a needle tip of a certain length; a compression spring c is installed on the back end of the thimble in the plastic shell and the seal between covers;

The puncture handle 1 penetrates from the large end of the stepped vertical hole at one end of the C-shaped fixed frame, the outer thread of the screw sleeve matches the vertical threaded hole of the terminal, and the thimble passes through the V-shaped groove of the C-shaped fixed frame.

The non-circular section of this embodiment is a flat cylinder, and two sides are cut off to form a "waist" shape. This shape cooperates with the inner hole of the plastic handle d to prevent the thimble a and the screw sleeve b from rotating freely. , that is, when the puncture handle 1 is rotated, the thimble a and the screw sleeve b will rotate together with the handle.

In the free state, the thimble a and the screw sleeve b are pushed tightly by the spring c. If the needle point of the thimble a is pressed hard, the thimble a will retreat until it touches the boss inside the handle.

When in use, the cable is placed at the bottom of the triangular limiting groove of the C-shaped holder 2, and the compression handle 3 is rotated until the cable is compressed. The terminal 4 is placed inside the C-shaped fixed frame 2 and connected to the electric wire. Screw the puncture handle 1 into the threaded hole of the terminal 4, turn the puncture handle 1, and the thimble a of the handle will move toward the cable. When the thimble a When contacting the cable insulation sleeve, the thimble a retreats, and the spring compresses. Continue to turn the puncture handle 1 until the boss in the puncture handle 1 pushes against the tail of the thimble a and the thimble a cannot move back. The thimble a penetrates the insulating sleeve of the cable and touches the wire part of the cable, and the voltage of the wire can pass through the thimble a, screw The sleeve b and the connection terminal 4 are transmitted to the power-taking wire, and the power supply is completed by the power-taking wire connected to the equipment.

As shown in FIG. 3 , the connection between the puncture handle 1 and the terminal 4 of the present invention is described. The connecting terminal 4 is placed inside the C-shaped fixing frame 2 and is a stepped square column. There is a threaded hole from bottom to top, and this threaded hole cooperates with the external thread of the screw sleeve b of the puncture handle 1. The end face of the first step of the connecting terminal 4 has a circular counterbore, and the connector of the power-taking wire can be put into the counterbore and is fixed with the crimping screw on the top to get the power-feeding wire and realize electrical connection simultaneously.

Claims (1)

1., for the penetrating cable clamp from power transmission line electricity taking, it is characterized in that comprising:

One plastics C type fixed mount (2), c-shaped, an openend surface is provided with horizontal V-shaped groove, and have the stepped vertical hole and ladder transverse holes that are interconnected bottom V-shaped groove, another openend has the axial threaded hole pointing to V-shaped groove;

One plastics pressing handle (3) is bolt shape, is screwed in the axial threaded hole of described C type fixed mount one end;

One binding post (4), for the ladder square cylinder of conduction, detachably be arranged in the middle of stepped vertical hole bottom described C type fixed mount one openend V-shaped groove and ladder transverse holes, the large end of binding post has perpendicular screwed hole, small end has counterbore and can fix power taking electric wire by line pressing bolt and realize electrical connection;

One puncture handle (1), comprise a plastic housing (d), be the cylindrical shell with capping, have circular hole at the bottom of cylinder, cylinder bore is non-circular hole; One swivel nut (b), for appearance car has the tubular structure having axial manhole in the middle of screw thread, afterbody is the sliding flat cylinder of joining plastic handle not rounded endoporus in cross section, and circular hole at the bottom of cylinder is passed in swivel nut front end from plastic housing; One thimble (a) is tip elongate cylinder, and afterbody is the sliding flat cylinder of joining plastic handle not rounded endoporus in cross section, and thimble exposes the needle point of certain length through the endoporus of swivel nut from plastic housing; One Compress Spring (c), to be arranged in plastic housing between thimble rear end and capping;

Described puncture handle (1) is pierced into from the large end in stepped vertical hole of C type fixed mount one end, and the appearance screw thread of swivel nut coordinates with binding post perpendicular screwed hole, and thimble passes C type fixed mount V-shaped groove.