CN204397649U - Pincers special for sleeve conductive screw - Google Patents

Abstract

The utility model discloses a special pliers for casing conductive screw, which comprises a left pliers body and a right pliers body composed of a pliers head and a pliers handle which are symmetrically intersected and hinged. The pliers head includes a jaw and a jaw seat. The left jaw seat and the right jaw seat are composed of the left jaw seat is a part of the right jaw body, and the right jaw seat is a part of the left jaw body. On the jaw seat and the right jaw seat, semicircular internal threads are respectively arranged on the symmetrical positions of the opposite faces of the left jaw and the right jaw. When the utility model is used, the inner thread on the jaws cooperates with the outer thread of the screw rod to increase the contact area, and there is no slip between the screw rod and the jaws, so that the screw thread of the screw rod is not damaged while clamping is realized. The jaws and the jaw seat are connected by screws, which is convenient for replacing jaws of different sizes and specifications to adapt to screws of different sizes and specifications. The center line of the internal thread on the jaw is parallel or perpendicular to the center line of the hinge shaft, which is convenient for use.

Description

Special pliers for casing conductive screw

technical field

The utility model relates to an electrical tool, in particular to a special pliers for casing conductive screw rods.

Background technique

In the daily work of substation power electrical equipment maintenance, technical transformation, installation, etc., the staff often need to disassemble the nuts on the bushing conductive screws in the equipment (transformers, current transformers, voltage transformers, lightning arresters, etc.), because there is no special Tools, often use ordinary adjustable wrench to tighten the nut, in order to prevent the screw from rotating during the process of tightening the nut, often use electrician's pliers to clamp the screw, and pad cotton silk cloth on the screw to prevent damage to the screw thread, but even if this is done, the loose and tight The screw nut can not solve the problem of screw rod rotation. It often causes the screw rod to rotate during the process of loosening and tightening the nut and damages the threaded thread. The nut is not easy to be removed. oil, loose internal contacts, etc., or even damage the equipment.

Utility model content

The technical problem to be solved by the utility model is to provide a special pliers for casing conductive screw rods that can easily clamp the screw rod without damaging the screw thread of the screw rod.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of special pliers for casing conductive screw, including cross-hinged left pliers body and right pliers body. It includes a jaw seat and a jaw fixed on the jaw seat. The jaw seat is composed of a symmetrical left jaw seat and a right jaw seat. The left jaw seat is a part of the right jaw body, and the right jaw seat is a part of the left jaw body. , the jaws are composed of symmetrically arranged left jaws and right jaws, which are respectively fixed on the left jaw base and the right jaw base by screws, and semicircular inner jaws are respectively set on the symmetrical positions of the left jaws and the right jaws. When the centerlines of the semicircular internal threads on the left and right jaws coincide when the jaws tend to close, the two semicircular internal threads and their extensions form an overall circular internal thread.

Further, two semicircular internal threads with different nominal diameters are respectively arranged on the symmetrical positions of the opposite faces of the left jaw and the right jaw, and are arranged in the semicircle on the left jaw and the right jaw during the closing process of the jaws. When the centerlines of the threads coincide, the two semicircular internal threads and their extensions form a whole circular internal thread.

Further, the centerlines of the semicircular internal threads provided on the left jaw and the right jaw are parallel to the centerline of the hinge shaft.

Further, the centerlines of the semicircular internal threads provided on the left and right jaws are perpendicular to the centerline of the hinge shaft.

Furthermore, among the two semicircular internal threads provided on the left jaw and the right jaw, the centerline of one close to the hinge axis is parallel to the centerline of the hinge axis, and the centerline of the other is perpendicular to the centerline of the hinge axis.

Owing to having adopted above-mentioned technical scheme, the technical progress that the utility model obtains is:

The utility model arranges internal threads on the jaws, so that when the pliers are clamping the screw, the internal threads on the jaws cooperate with the external threads of the screw to increase the contact area, and there is no slip between the screw and the jaws. The screw thread of the screw rod is not damaged, and the nut on the screw rod is conveniently disassembled. The jaws and the jaw base are connected by screws, which is convenient for replacing jaws of different sizes and specifications to adapt to screws of different sizes and specifications. The center line of the internal thread on the jaw is parallel or perpendicular to the center line of the hinge shaft, which is convenient for use.

Description of drawings

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

Fig. 2 is the structural representation of the utility model embodiment 2;

Fig. 3 is the A-A sectional structure schematic diagram of the utility model embodiment 2;

Fig. 4 is the structural representation of the utility model embodiment 3;

Fig. 5 is a schematic structural view of Embodiment 4 of the present utility model;

Fig. 6 is a schematic structural view of Embodiment 5 of the present utility model;

Among them, 1. Right jaw seat, 2. Hinge shaft, 3. Right jaw body, 4. Right jaw, 5. Left jaw seat, 6. Left jaw body, 7. Screw, 8. Semicircle internal thread, 9. Left Jaws.

Detailed ways

Below in conjunction with embodiment the utility model is described in further detail:

The utility model relates to a special pliers used for clamping a screw rod so as to loosen the nut on the screw rod. As shown in Figure 1, the utility model comprises the left pincer body 6 and the right pincer body 3 of cross hinge, and the left pincer body 6 and the right pincer body 3 are symmetrically hinged by the hinge shaft 2, and the hinge shaft 2 is a part of the left pincer body 6, Above the hinge is the pincer head, and below is the pincer handle. The pincer head includes a jaw seat and a jaw fixed on the jaw seat. The jaw seat is composed of a symmetrically arranged left jaw seat 5 and a right jaw seat 1. The jaw base 5 is a part of the right jaw body 3, and the right jaw base 1 is a part of the left jaw body 6. The jaws are composed of symmetrically arranged left jaws 9 and right jaws 4, which are respectively fixed on the left jaws by screws 7. On the mouth seat 5 and the right jaw seat 1, semicircular internal threads 8 are respectively arranged on the symmetrical positions of the left jaw 9 and the right jaw 4, and are arranged on the left jaw 9 and the right jaw when the jaws tend to close. When the centerlines of the semicircle internal threads 8 on the 4 coincided, two semicircle internal threads and extension lines thereof constituted an integral circular internal thread. The center line of the semicircular internal thread 8 provided on the left jaw 9 and the right jaw 4 is parallel to the center line of the hinge shaft 2 . The size, shape and structure of the left jaw and the right jaw are exactly the same and can be interchanged. When producing the left jaws and the right jaws, only the left jaws or the right jaws need to be produced in batches to get final product. When in use, for screws with different diameters and different pitches, only the left jaw and the right jaw need only be replaced.

The above is a specific embodiment of the utility model, the center line of the semicircular internal thread 8 provided on the left jaw 9 and the right jaw 4 is parallel to the center line of the hinge shaft 2 . As shown in Figure 2 and Figure 3, it is another specific embodiment of the present utility model, the centerline of the semicircular internal thread 8 provided on the left jaw 9 and the right jaw 4 described in this embodiment and the centerline of the hinge shaft 2 vertical. The size, shape and structure of the left jaw and the right jaw are exactly the same and can be interchanged.

In the process of use, some specifications of the screw are commonly used screws. For these screws, it is troublesome to frequently replace the jaws. Two semicircular internal threads 8 with different nominal diameters are respectively provided. When the centerlines of the semicircular internal threads 8 arranged on the left jaw 9 and the right jaw 4 coincide when the jaws tend to close, the left jaw 9 The two semicircular internal threads and the two semicircular internal threads on the right jaw 4 and their extensions form two overall circular internal threads with different nominal diameters, so that a pair of pliers can clamp two kinds of screw rods. The method of setting two semicircular internal threads 8 on the left jaw 9 and the right jaw 4 can either adopt the mode that its center line is parallel to the center line of the hinge shaft 2 (as shown in Figure 4 ), or use its center line Orthogonal to the centerline of hinge axis 2 (as shown in Figure 5), it is also possible to adopt a method in which one centerline is parallel to the centerline of hinge axis 2, and the other centerline is perpendicular to the centerline of hinge axis 2, and the centerline of hinge axis 2 The position of the semicircular internal thread parallel to the line is located on the side close to the hinge axis 2 (as shown in Figure 6).

Claims (5)

1. A special pliers for casing conductive screws, including cross-hinged left pliers (6) and right pliers (3), the left pliers (6) and right pliers (3) are symmetrically hinged by the hinge shaft (2) , above the hinge is the pliers head, and below is the pliers handle, characterized in that: the pliers head includes a jaw seat and a jaw fixed on the jaw seat, and the jaw seat is composed of symmetrically arranged left jaw seats (5), The right jaw seat (1) is composed of the left jaw seat (5) which is a part of the right jaw body (3), the right jaw seat (1) is a part of the left jaw body (6), and the jaws are composed of symmetrically arranged left jaws The jaw (9) and the right jaw (4) are respectively fixed on the left jaw seat (5) and the right jaw seat (1) by screws, on the opposite side of the left jaw (9) and the right jaw (4) Semicircle internal threads (8) are respectively arranged at symmetrical positions. When the jaws tend to close, when the centerlines of the semicircle internal threads (8) on the left jaw (9) and the right jaw (4) coincide, the two semicircles The internal thread and its extension form an integral circular internal thread. 2. The special pliers for casing conductive screw according to claim 1, characterized in that: two semicircles with different nominal diameters are respectively arranged on the symmetrical positions of the opposite surfaces of the left jaw (9) and the right jaw (4). Internal thread (8), when the centerlines of the semicircular internal threads (8) on the left jaw (9) and right jaw (4) coincide when the jaws tend to close, the two semicircular internal threads and their extensions The thread constitutes an overall circular internal thread. 3. The special pliers for casing conductive screw according to claim 1 or 2, characterized in that: the center line of the semicircular internal thread (8) provided on the left jaw (9) and the right jaw (4) is in line with the The hinge axis (2) center line is parallel. 4. The special pliers for casing conductive screw according to claim 1 or 2, characterized in that: the center line of the semicircular internal thread (8) provided on the left jaw (9) and the right jaw (4) is in line with the The hinge axis (2) center line is vertical. 5. The special pliers for casing conductive screw according to claim 2, characterized in that: among the two semicircular internal threads (8) provided on the left jaw (9) and the right jaw (4), the two semicircular internal threads (8) close to the hinge The center line of one of the shafts (2) is parallel to the center line of the hinge shaft (2), and the center line of the other is perpendicular to the center line of the hinge shaft (2).