CN203859451U - Wire stripper specially used for secondary cables - Google Patents

Abstract

The utility model relates to a special peeling pliers for secondary cables, which comprises two pliers bodies whose middle parts are hinged together. The front end of the pliers head is correspondingly provided with a pliers blade, and the inner sides of the two pliers heads are respectively provided with half arc grooves, and the two half arc grooves can be buckled correspondingly to form a circular through hole suitable for the outer diameter of the secondary cable. Rollers are installed on the inner wall of half of the arc groove; at least one of the two pincers is equipped with a blade with the edge facing inward, and one end of the blade is inserted into the semi-arc groove on the pincer where it is located. The protruding end forms the blade. The utility model has the advantages of simple structure, convenient operation, high working efficiency and improved standardization of the secondary cable stripping operation.

Description

Special stripping pliers for secondary cables

technical field

The utility model relates to the field of power cable wiring tools, in particular to a special stripping pliers for secondary cables.

Background technique

The secondary cable is the channel connecting the secondary system and the primary equipment in the power system. Its structure can be roughly divided into four parts from the inside to the outside, namely the cable core, shielded copper layer, steel armor protection layer and insulating rubber. It is hoped to use the cable core in the project, so when using the cable for electrical connection, it is necessary to peel off the insulating rubber and steel armor protective layer at both ends of the cable, and then tear off the shielded copper skin. This process is the secondary cable. the peeling process.

During the above-mentioned cable stripping process, the shielding copper skin can be easily peeled off, while the insulating rubber and steel armor need to be removed with the help of tools. The current operation process is to first cut the insulating rubber at both ends of the cable along the cable circumference with a utility knife, and then cut perpendicular to the circumference (along the cable extension direction) to the end of the cable, remove the stripped insulating rubber, and expose the steel armor protection layer , and then use the diagonal pliers to cut the steel armor, and twist it in the opposite direction of the steel armor to remove it. In the process of peeling, care should be taken not to damage other structural layers when peeling and cutting any structural layer, so as not to cause hidden dangers to safe operation in the future.

The difficulty of the current operation is that the material used for the insulating rubber is generally polyvinyl chloride (PVC), which is hard and thick. The difference in experience and technology, work efficiency is uneven. Moreover, to peel off the insulating rubber and the protective layer of steel armor, a utility knife and diagonal pliers should be used respectively, which adds a set of tool usage procedures. Therefore, the existing secondary cable stripping operation is not standardized, and the construction personnel lack standardized training during operation. The stripped wire ends are messy and unsightly, which affects the progress of the project and also brings potential safety hazards to future power connections.

Utility model content

The technical problem to be solved by the utility model is to provide a special stripping pliers for secondary cables. The pliers are simple in structure, easy to operate, high in work efficiency and improve the standardization of secondary cable stripping operations.

In order to solve the above-mentioned technical problems, the special peeling pliers for secondary cables of the present utility model includes two pliers bodies hinged together in the middle. , the front ends of the two pliers are correspondingly provided with pliers blades, and its structural feature is that the inner sides of the two pliers are each provided with a half-arc groove, and the two half-arc grooves can be buckled correspondingly to form a Adaptive circular through holes, rollers are installed on the inner wall of each semi-arc groove; at least one of the two pliers is equipped with a blade with the edge facing inward, and one end of the blade is inserted into the pliers where it is located. A knife edge is formed in the semicircular arc groove and at the protruding end.

With the above structure, first open the pliers, place the cable at the knife edge, hold the pliers handle so that the knife edge is against the insulating rubber and rotate to cut the insulating rubber, then loosen the pliers handle, and put the section of cable into the In the circular through hole, put the cut end of the cable slightly behind the inner wall of the semi-circular groove opened by the stripping pliers, use the blade to cut the insulating rubber, and hold the handle of the pliers tightly to buckle the two pliers heads. Pull it along the length of the cable, pull the stripping pliers out of the cable end from the cut, the insulating rubber is cut off, then use the pliers blade to cut the protective steel armor, and peel off the steel armor in the opposite direction of the steel armor winding to complete the whole Cable stripping work. In the process of pulling the stripping pliers along the length of the cable, the inner wall of the semicircular arc groove may block the insulating rubber. The setting of the roller makes the sliding friction between the insulating rubber and the semicircular arc groove become rolling friction with the roller. It can greatly reduce the frictional resistance, avoid the occurrence of the above phenomenon, and the operation is smoother, and the peeling efficiency is higher. It can be seen that the stripping pliers can be used to perform the secondary cable stripping operation very simply and conveniently. It is only necessary to use each part to peel off the layers of the cable layer by layer according to the steps. There will be no damage to the internal cable or injury to the operator during the process. Phenomenon.

Blades are installed on the two pincer heads, and the edges of the two blades can be engaged correspondingly.

A blade is installed on one of the two pincer heads, and an arc-shaped notch opposite to the edge of the blade is provided on the other pincer head that is not equipped with a blade.

The above structure is aimed at the problem of setting the number of blades. Two blades can be set or one blade can be set. When two blades are set, it can only be rotated half a circle when cutting the insulating rubber ring, and when one blade is set, it needs to be rotated one However, since the cylindrical shape of the cable is circular, it is easy to slip during ring cutting. Setting an arc-shaped notch can prevent the cable from slipping, so that the circular cut of the ring cut will not be deflected, ensuring the beauty of the cut and facilitating the follow-up wiring work.

A roller groove is provided on the inner wall of the semicircular arc groove, and the roller is installed in the roller groove through the rotation of the roller shaft, and the upper part of the roller protrudes out of the notch of the roller groove.

A compression spring is connected between the two pliers handles near the hinge point. Setting the compression spring is helpful for opening and fastening the pliers, which facilitates the operation of the staff.

The blade is installed in a sinking groove through bolts, the sinking groove is close to the inner surface of the pliers head and the edge of the blade is flush with the inner surface of the pliers head, and a slot is provided on the inner surface of the pliers head at the bottom of the edge of the knife. The blade adopts the above-mentioned hidden installation structure, which avoids accidental injury to the staff due to the exposure of the knife edge and blade, and increases the safety of use.

The pliers handle of one of the pliers is equipped with a rotating rod near the hinge point, and the other pliers head is provided with a rotating rod near the hinge point, which can cooperate with the rotating rod to fasten the two pliers. position-locked positioning table. With this kind of locking structure, when it is necessary to fasten the two pliers, you only need to turn the rotating rod to the position against the positioning table, and you don't need to hold the pliers handle tightly all the time, so the operation is more labor-saving. When the cable needs to be stripped for a long period of time, the process of pulling the stripping pliers along the length of the cable needs to hold the pliers handle tightly all the time, and other operations cannot be performed. The locking structure can keep the pliers in a buckled state, and the stripping pliers can be put down during operation for other operations. Operation and use are more convenient.

In summary, the utility model has the advantages of simple structure, convenient operation, high work efficiency and improved standardization of secondary cable stripping operations.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the enlarged structure of one of the pliers;

Fig. 3 is the sectional enlarged view of A-A direction in Fig. 2;

Fig. 4 is the sectional enlarged view of B-B direction in Fig. 2;

Fig. 5 is a schematic structural view of another embodiment of the present invention.

Detailed ways

With reference to the accompanying drawings, the special peeling pliers for secondary cables of the present utility model includes two pliers bodies 1 whose middle parts are hinged together. Two pliers 3. In order to facilitate the opening and fastening of the two pliers bodies, a compression spring 9 is connected between the two pliers handles 2 near the hinge point 10 . The front ends of the two pliers 3 are correspondingly provided with pliers blades 4, and the inner sides of the two pliers 3 are each provided with a half-arc groove 5, and the two half-arc grooves 5 can be buckled correspondingly to form a joint that is compatible with the outer diameter of the secondary cable. Circular through hole, roller 6 is all installed on the inner wall of every semi-arc groove 5. At least one of the two pliers 3 is equipped with a blade 7 with a knife edge 71 inward, and one of the ends of the blade 7 penetrates into the semicircular arc groove 5 on the pliers 3 where it is located and forms a blade 72 at the protruding end .

When the utility model is in use, first open the pliers, place the cable at the knife edge 71, hold the pliers handle 2 tightly so that the knife edge 71 is against the insulating rubber and rotate to cut the insulating rubber around, then loosen the pliers handle 2, Put this section of cable into the circular through hole, put the cut cable end slightly behind the inner wall of the semi-circular groove 5 opened by the stripping pliers, use the blade 72 to cut the insulating rubber, hold Tighten the pliers handle 1 so that the two pliers heads 3 are buckled together, pull along the length of the cable, and pull the stripping pliers out of the cable end from the cut, the insulating rubber is cut off, and then use the pliers blade 4 to cut the protective steel armor, along the steel The armor is wound in the opposite direction to peel off the steel armor to complete the stripping of the entire secondary cable. In the process of pulling the peeling pliers along the length of the cable, the inner wall of the semicircular arc groove 5 may block the insulating rubber. Friction can greatly reduce frictional resistance and avoid the occurrence of the above phenomenon.

Regarding the setting of the number of blades, the blade 7 can be provided with two blades or one blade. Figure 1 and Figure 5 respectively show the situation when two blades are set and one blade is set. As shown in FIG. 1 , blades 7 are installed on both pliers heads 3 and the edges 71 of the two blades 7 can be engaged correspondingly. As shown in FIG. 5 , a blade 7 is installed on one of the two pliers 3 , and an arc-shaped notch 8 opposite to the edge 71 of the blade 7 is provided on the other pliers 3 without the blade 7 . When two pieces are set, it can only be rotated half a turn when cutting the insulating rubber ring, and when one piece is set, it needs to be turned one turn. However, since the cylindrical shape of the cable is circular, it is easy to slip when the ring is cut. Arranging the arc notch 8 can prevent the cable from slipping, so that the circular cut of the ring cut will not be deflected, which ensures the beauty of the cut and facilitates the follow-up. Wiring work.

Referring to Fig. 4, the inner wall of the semicircular arc groove 5 is provided with a roller groove 60, and the roller 6 is rotated and installed in the roller groove 60 by the roller shaft 61 and the top of the roller 6 protrudes out of the notch of the roller groove 60.

With reference to Fig. 3, for the installation structure of blade 7, blade 7 is installed in a sinker 13 by bolt 15, and this sinker 13 is close to the inner surface of pliers 3 and the edge 71 of blade 7 is flush with the inner surface of pliers 3, A slot 14 is provided at the bottom of the knife edge 71 on the inner side of the pliers head 3 . The edge of a knife 71 of blade 7 is flush with the inner surface of pliers 3 and means that edge 71 does not exceed the inner surface of pliers 3 and that edge 71 is parallel to the inner edge of pliers 3. When pliers edge 4 was closed, edge 71 also just can Do not touch the pliers head 3 on the opposite side. Simultaneously, except the blade at the rear end, the whole blade is hidden in the sinking groove. This hidden installation structure prevents the blade 71 from being exposed and accidentally injuring the staff. Meanwhile, the blade 72 is located in the semicircular groove 5, and No accidental injury to staff. the

With reference to the accompanying drawings, the handle 2 of one of the pliers body 1 is provided with a rotating rod 11 near the hinge point 10, and the pliers head 3 of the other pliers body 1 is provided with a rotating rod near the hinge point 10. The rod 11 cooperates with the positioning platform 12 that locks the positions of the two pliers bodies 1 after they are fastened together. When it is necessary to fasten the two pliers bodies 1, it is only necessary to rotate the rotating rod 11 to a position on the positioning platform 12, and it is not necessary to hold the pliers handle 2 tightly all the time. When the cable needs to be peeled for a long period of time, the process of pulling the stripping pliers along the length of the cable needs to hold the pliers handle 2 tightly all the time, and other operations cannot be performed. The locking structure can keep the pliers body 1 in a buckled state, and the stripping pliers can be put down during operation It is more convenient to use for other operations.

To sum up, the utility model is not limited to the above specific embodiments. Those skilled in the art can make several changes and modifications without departing from the spirit and scope of the present utility model. The protection scope of the utility model should be based on the claims of the utility model.

Claims (7)

1. A kind of peeling pliers for secondary cables, including two pliers bodies (1) hinged together in the middle, the two pliers bodies (1) form two pliers handles (2) at the rear of the hinge point (10), and at the hinge point The front part of (10) forms two pincer heads (3), and the front ends of the two pincer heads (3) are correspondingly provided with pincer blades (4). The groove (5) and the two semi-arc grooves (5) can be buckled correspondingly to form a circular through hole suitable for the outer diameter of the secondary cable. Rollers ( 6); At least one of the two pliers (3) is equipped with a blade (7) with a knife edge (71) facing inward, and one end of the blade (7) penetrates into the semicircle on the pliers (3) where it is located A knife edge (72) is formed in the arc groove (5) and at the protruding end. 2. The special stripping pliers for secondary cables according to claim 1, characterized in that blades (7) are installed on the two pliers heads (3), and the edges (71) of the two blades (7) can be engaged correspondingly. 3. The special stripping pliers for secondary cables according to claim 1, characterized in that a blade (7) is installed on one of the two pliers (3), and the other pliers (3) without a blade (7) is installed ) is provided with an arc-shaped notch (8) opposite to the knife edge (71) of the above-mentioned blade (7). 4. The special stripping pliers for secondary cables according to claim 1, characterized in that a roller groove (60) is opened on the inner wall of the semicircular arc groove (5), and the roller (6) passes through the roller shaft (61 ) Turn the notch installed in the roller groove (60) and the upper part of the roller (6) protrudes out of the roller groove (60). 5. The special stripping pliers for secondary cables according to claim 1, characterized in that a compression spring (9) is connected between the two pliers handles (2) near the hinge point (10). 6. The special stripping pliers for secondary cables according to claim 1, characterized in that the blade (7) is installed in a sinker (13) through a bolt (15), and the sinker (13) is close to the clamp head ( 3) and the edge (71) of the blade (7) is flush with the inner surface of the pliers (3), and the inner surface of the pliers (3) is provided with a slot (14) at the bottom of the edge (71). 7. The special stripping pliers for secondary cables according to any one of claims 1 to 6, characterized in that the handle (2) of one of the pliers body (1) is rotated and installed at a position close to the hinge point (10) There is a rotating rod (11), and the pliers head (3) of the other pliers body (1) is provided at a position close to the hinge point (10), which can cooperate with the rotating rod (11) to fasten the two pliers bodies (1). position locking positioning table (12).