阅读说明：本技术 一种螺栓式楔形并沟线夹 (Bolt type wedge-shaped parallel groove clamp ) 是由 刘胜春 王景朝 周立宪 司佳钧 张军 牛海军 孙娜 于 2020-04-21 设计创作，主要内容包括：本发明涉及一种螺栓式楔形并沟线夹,包括：线夹本体(1)和楔形块(3)；其中,所述线夹本体(1)的两端开设有C形槽(2),所述楔形块(3)可滑动的置于所述C形槽(2)内,所述楔形块(3)与所述C形槽(2)相对的两个侧壁形成了用于容纳导线的两个线槽(7),所述线槽(7)的内径与导线外径相匹配,本发明提供一种螺栓式楔形并沟线夹,有效解决螺栓式并沟线夹中螺栓易松弛,紧固力下降的技术问题。(The invention relates to a bolt type wedge-shaped parallel groove clamp, which comprises: the wire clamp comprises a wire clamp body (1) and a wedge-shaped block (3); the invention provides a bolt type wedge parallel groove clamp, which effectively solves the technical problems that a bolt in the bolt type parallel groove clamp is easy to loose and fastening force is reduced.)

1. A bolt-type wedge-shaped parallel groove clamp, comprising: the wire clamp comprises a wire clamp body (1) and a wedge-shaped block (3); the cable clamp comprises a cable clamp body (1), wherein C-shaped grooves (2) are formed in two ends of the cable clamp body (1);

wedge (3) slidable arrange in C groove (2), wedge (3) with two lateral walls that C groove (2) is relative have formed two wire casings (7) that are used for holding the wire, the internal diameter and the wire external diameter phase-match of wire casing (7).

2. The bolted wedge-shaped parallel groove clamp according to claim 1, characterized in that the section of the wedge block (3) in the direction a-a is of trapezoidal configuration.

3. The bolted wedge parallel groove clamp according to claim 2, characterized in that the two side walls of the wedge block (3) opposite the C-shaped groove (2) are concavely curved (8), the inner diameter of the concavely curved (8) being adapted to the outer diameter of a conductor.

4. The bolted wedge parallel groove clamp according to claim 3, characterized in that the clamp body (1) comprises a boss (5), said boss (5) being located at one end of the inside middle of the C-shaped groove (2);

the wedge block (3) and the boss (5) are provided with a slotted structure corresponding to the boss (5) in size.

5. The bolted wedge-shaped parallel groove clamp according to claim 4, characterized in that said boss (5) has a boss threaded hole (6), said boss threaded hole (6) being located in the center of said boss (5) in the same direction as said wire groove (7);

the wedge-shaped block (3) is provided with a wedge-shaped block threaded hole (10) and is positioned on the same axis with the boss threaded hole (6).

6. The bolted wedge parallel groove clamp of claim 5, characterized in that said wedge block (3) comprises: a pulley (9);

the pulleys (9) are arranged on the concave arcs (8) on two sides of the wedge-shaped block (3) and are respectively arranged in parallel with the two wire grooves (7).

7. The bolted wedge parallel groove clamp of claim 6, wherein said wedge block (3) further comprises a bolt (4);

the bolt (4) sequentially penetrates through the wedge-shaped block threaded hole (10) and the boss threaded hole (6) to fix the wire clamp body (1) and the wedge-shaped block (3), and then wires are fixed in the two wire grooves (7) respectively.

8. The bolted wedge-shaped parallel groove clamp according to claim 7, characterized in that the C-shaped groove (2), the wedge block (3) and the bolt (4) are all of aluminum alloy material.

Technical Field

The invention belongs to the technical field of parallel groove clamps, and particularly relates to a bolt type wedge-shaped parallel groove clamp.

Background

The parallel groove clamp is a contact fitting for parallelly connecting wires to transmit electrical load, has wide application range, and can be applied to jumper connection of non-linear towers, T connection, branch line and the like at non-bearing connection positions of an electric power system, down lead connection of electrical equipment such as switches, transformers and the like, ground down lead connection of lightning conductors and the like.

At present, a parallel groove clamp is frequently adopted in overhead distribution lines of 10kV and below to continue a lead, the parallel groove clamp is fastened by an upper aluminum alloy cover and a lower aluminum alloy cover through steel bolts, the bolts and the cover plates are made of different materials, the linear expansion coefficients of the bolts and the cover plates are greatly different, the thermal elongation of the bolts and the cover plates is asynchronous during temperature change, the bolts are easy to loosen after long-term high and low temperature change, the fastening force is reduced, so that the continuous resistance is large, the temperature rise exceeds the standard, the fault that the parallel groove clamp fails due to heating is frequently generated in actual lines, and the safe and stable operation of the lines is seriously influenced.

Therefore, in an actual line, 2 or 3 parallel groove clamps are often used at the same time, and in order to prevent loosening of the bolts, the bolts need to be fastened regularly, so that the operation is troublesome, and the maintenance workload is large.

Disclosure of Invention

In order to solve the problems that bolts in a bolt type parallel groove clamp are easy to loose and the fastening force is reduced in the prior art, the invention provides a bolt type wedge-shaped parallel groove clamp, which comprises: the wire clamp comprises a wire clamp body (1) and a wedge-shaped block (3); the cable clamp comprises a cable clamp body (1), wherein C-shaped grooves (2) are formed in two ends of the cable clamp body (1);

wedge (3) slidable arrange in C groove (2), wedge (3) with two lateral walls that C groove (2) is relative have formed two wire casings (7) that are used for holding the wire, the internal diameter and the wire external diameter phase-match of wire casing (7).

Preferably, the section of the wedge-shaped block (3) along the A-A direction is of a trapezoidal structure.

Preferably, two side walls of the wedge-shaped block (3) opposite to the C-shaped groove (2) are in an inner concave arc shape (8), and the inner diameter of the inner concave arc shape (8) is matched with the outer diameter of the lead.

Preferably, the wire clamp body (1) comprises a boss (5), and the boss (5) is positioned at one end of the middle part of the inner side of the C-shaped groove (2);

the wedge block (3) and the boss (5) are provided with a slotted structure corresponding to the boss (5) in size.

Preferably, the boss (5) is provided with a boss threaded hole (6), and the boss threaded hole (6) is positioned in the center of the boss (5) and is consistent with the direction of the wire casing (7);

the wedge-shaped block (3) is provided with a wedge-shaped block threaded hole (10) and is positioned on the same axis with the boss threaded hole (6).

Preferably, said wedge-shaped block (3) comprises: a pulley (9);

the pulleys (9) are arranged on the concave arcs (8) on two sides of the wedge-shaped block (3) and are respectively arranged in parallel with the two wire grooves (7).

Preferably, the wedge block (3) further comprises a bolt (4);

the bolt (4) sequentially penetrates through the wedge-shaped block threaded hole (10) and the boss threaded hole (6) to fix the wire clamp body (1) and the wedge-shaped block (3), and then wires are fixed in the two wire grooves (7) respectively.

Preferably, the C-shaped groove (2), the wedge-shaped block (3) and the bolt (4) are all made of aluminum alloy materials.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention provides a bolt type wedge-shaped parallel groove clamp, which comprises: the wire clamp comprises a wire clamp body (1) and wedge-shaped blocks (3), wherein C-shaped grooves (2) are formed in two ends of the wire clamp body (1), the wedge-shaped blocks (3) are arranged in the C-shaped grooves (2) in a sliding mode, two side walls, opposite to the C-shaped grooves (2), of the wedge-shaped blocks (3) form two wire grooves (7) used for containing wires, and the inner diameter of each wire groove (7) is matched with the outer diameter of each wire.

2. The bolt type wedge-shaped parallel groove clamp provided by the invention is simple in structure, convenient to install, easy to realize and reliable in effect.

3. The bolt type wedge-shaped parallel groove clamp provided by the invention does not need to be maintained regularly, and the workload is reduced.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a bolt-type wedge-shaped parallel groove clamp of the present invention;

FIG. 2 is a schematic view of a wire clamp body of the present invention;

FIG. 3 is a schematic view of a wedge of the present invention;

in the figure: 1-a wire clamp body; 2-C-shaped grooves; 3-a wedge-shaped block; 4-a bolt; 5-boss; 6-boss threaded holes; 7-a wire groove; 8-concave arc shape; 9-a pulley; 10-wedge block threaded hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As is known, a parallel groove clamp is a contact fitting for connecting wires in parallel to transmit electrical loads, has a wide application range, and can be applied to jumper connection of non-linear towers, connection of T-connection, branch lines and the like at non-bearing connection positions of an electric power system, down lead connection of electrical equipment such as switches, transformers and the like, and ground down lead connection of lightning conductors and the like.

At present, a parallel groove clamp is frequently adopted in overhead distribution lines of 10kV and below to continue a lead, the parallel groove clamp is fastened by an upper aluminum alloy cover and a lower aluminum alloy cover through steel bolts, the bolts and the cover plates are made of different materials, the linear expansion coefficients of the bolts and the cover plates are greatly different, the thermal elongation of the bolts and the cover plates is asynchronous during temperature change, the bolts are easy to loosen after long-term high and low temperature change, the fastening force is reduced, so that the continuous resistance is large, the temperature rise exceeds the standard, the fault that the parallel groove clamp fails due to heating is frequently generated in actual lines, and the safe and stable operation of the lines is seriously influenced. Therefore, in an actual line, 2 or 3 parallel groove clamps are often used at the same time, and in order to prevent loosening of the bolts, the bolts need to be fastened regularly, so that the operation is troublesome, and the maintenance workload is large.

As shown in fig. 1 and 2, the present invention provides a bolt-type wedge-shaped parallel groove clamp, including: the wire clamp comprises a wire clamp body 1 and a wedge-shaped block 3; the cable clamp comprises a cable clamp body 1, a cable clamp body and a cable clamp body, wherein C-shaped grooves 2 are formed in two ends of the cable clamp body 1;

the wedge-shaped block 3 is slidably arranged in the C-shaped groove 2, and two side walls of the wedge-shaped block 3 opposite to the C-shaped groove 2 form two wire slots 7 for accommodating wires;

the inner diameter of the wire slot 7 is matched with the outer diameter of a wire, so that the wire can be in close contact with the C-shaped slot 2 and the wedge-shaped block 3, and the contact resistance is reduced;

in addition, the invention can effectively solve the technical problems that the bolt in the bolt type parallel groove clamp is easy to loose and the fastening force is reduced;

the wires on the two sides are arranged in the wire grooves 7 and have a certain angle, the purpose is to play the role of the wedge-shaped block 3, the wedge-shaped block 3 is pushed forward under the action of the driving mechanism, and the wedge-shaped block 3 generates larger extrusion force on the wires due to the fact that the included angle of the wires is smaller, so that the C-shaped groove 2 and the wedge-shaped block 3 can be in close contact, and contact resistance is reduced;

moreover, the wire clamp is simple in structure, convenient to install, easy to realize, reliable in effect, free of regular maintenance and reduced in workload;

as shown in fig. 3, the section of the wedge-shaped block 3 along the direction a-a is a trapezoidal structure;

two side walls of the wedge-shaped block 3 opposite to the C-shaped groove 2 are in an inward concave arc shape 8, and the inner diameter of the inward concave arc shape 8 is matched with the outer diameter of a lead;

the wire clamp body 1 comprises a boss 5, and the boss 5 is positioned at one end of the middle part of the inner side of the C-shaped groove 2;

the wedge-shaped block 3 and the boss 5 are provided with a slotted structure matched with the boss 5 in size at the corresponding position;

the boss 5 is provided with a boss threaded hole 6, and the boss threaded hole 6 is positioned in the center of the boss 5 and is consistent with the direction of the wire slot 7;

the wedge-shaped block 3 is provided with a wedge-shaped block threaded hole 10 and is positioned on the same axis with the boss threaded hole 6;

the wedge block 3 includes: a pulley 9;

the pulleys 9 are arranged on the concave arcs 8 on the two sides of the wedge-shaped block 3 and are respectively arranged in parallel with the two wire grooves 7;

the wedge block 3 further comprises a bolt 4;

the bolt 4 sequentially penetrates through the wedge-shaped block threaded hole 10 and the boss threaded hole 6 to fix the wire clamp body (1) and the wedge-shaped block 3, so that wires are respectively fixed in the two wire grooves 7;

the C-shaped groove 2, the wedge-shaped block 3 and the bolt 4 are all made of aluminum alloy materials.

Example 2

Based on the same invention concept, the invention also provides a using method of the bolt type wedge-shaped parallel groove clamp,

during the use, put into wire casing 7 of C groove 2 with the wire earlier, then pass wedge screw hole 10 with bolt 4, on the boss screw hole 6 of screw in boss 5, along with the screw in of bolt 4, drive wedge 3 through pulley 9 and remove to the boss 5 direction gradually, will be located the wire of C groove 2 both sides wire casing 7 and compress tightly at last, realize continuing of wire.

Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art will appreciate that various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention is included in the scope of the claims of the present invention filed as filed.