Arc-proof puncture wire clamp

Abstract

The utility model provides an arc-preventing puncture wire clamp, which comprises an upper cover and a lower seat which are matched with each other, an arc-shaped upper half groove and an arc-shaped lower half groove are arranged in parallel on the surfaces of the upper cover and the lower seat which are close to each other, and the upper cover and the lower seat are buckled to enable the upper half groove and the lower half groove to be combined to form a through groove for a circuit to pass through. A puncture blade and an elastic pad convenient for the puncture blade to pass through are arranged in the upper half groove and / or the lower half groove; positioning grooves are formed in the two sides of the lower end face of the upper cover, positioning protruding blocks are arranged on the two sides of the upper end face of the lower base, when the upper cover and the lower base are buckled, the positioning protruding blocks and the positioning grooves are embedded, and the upper cover or the lower base is further provided with an arc striking rod in an extending mode; according to the device, the upper cover and the lower seat of the puncture wire clamp are matched through the positioning groove and the positioning convex block, compared with positioning purely through a bolt, the positioning groove and the positioning convex block enable the positioning of the upper cover and the lower seat to be more stable, and the positioning convex block plays a role similar to a waterproof platform to enhance the waterproofness; and when the bolt is slightly loosened, the puncture blade cannot move along with the upper cover or the lower seat.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an arc puncture prevention wire clamp. Background Art

[0002] Insulated piercing wire clamps are often needed in power grids. Insulated piercing wire clamps are mainly composed of an insulating shell, a piercing blade, a waterproof rubber pad, and a bolt. When used as a cable branch connection, insert the branch cable into the branch cap and determine the main line branch position. Then, use a socket wrench to tighten the torque nut on the wire clamp. As the torque nut is tightened, the upper and lower insulators of the wire clamp with hidden piercing blades gradually close together. At the same time, the arc-shaped sealing rubber pad wrapped around the piercing blade gradually adheres to the cable insulation layer, and the piercing blade also begins to pierce the cable insulation layer and the metal conductor to achieve conductivity.

[0003] Insulated conductors suspended overhead are prone to breaking due to lightning strikes during thunderstorms. Therefore, lightning protection and maintenance of overhead insulated conductors have always been a key issue in the electrical industry. The primary method for preventing lightning-induced breakage of overhead insulated conductors is to partially expose the insulated conductor near the insulator, allowing the arc root to be transferred or fixed to specialized hardware and burned, thereby protecting the conductor from burns. Therefore, a widely adopted measure to prevent lightning-induced breakage both domestically and internationally is to install lightning protection hardware on the insulated conductors. However, the structure of existing piercing arc clamps is less than ideal and requires urgent improvement.

[0004] For example, the Chinese utility information patent with authorization announcement number CN 202340109 U provides a piercing arc-proof wire clamp, including a piercing wire clamp base, a piercing wire clamp upper cover, a bolt assembly for fixing the piercing wire clamp upper cover to the piercing wire clamp base, and an arc-proof rod fixed to the bottom of the piercing wire clamp base; the basic shape of the arc-proof rod is L-shaped, its top end is connected to the piercing wire clamp base, and an arc-strike ball is provided at its bottom end, and the bottom end of the arc-proof rod protrudes from the arc-strike ball; when lightning occurs, discharge occurs between the arc-strike ball and the grounding plate, causing the follow-flow power frequency arc to move to the arc-strike metal ball and burn, thereby protecting the insulated wire located in the wire clamp trough from damage; in addition, the utility model adopts piercing connection, which is convenient for installation and construction, and reduces the labor intensity of the operator.

[0005] In order to improve the stability of the fit between the base and the upper cover of the puncture wire clamp, the applicant has improved the design of the puncture anti-arc wire clamp to make the fit between the upper and lower parts more stable and the waterproof performance stronger. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and provide an arc puncture prevention wire clamp. The technical solutions adopted by this utility model are as follows:

[0007] An arc-proof puncture wire clamp comprises an upper cover and a lower seat which cooperate with each other, wherein an arc-shaped upper half groove and a lower half groove are arranged in parallel on the surface close to each other of the upper cover and the lower seat, and the upper cover and the lower seat are buckled together so that the upper half groove and the lower half groove are combined to form a through groove for the line to pass through, and a puncture blade and an elastic pad for facilitating the passage of the puncture blade are provided in the upper half groove and / or the lower half groove; positioning grooves are provided on both sides of the lower end surface of the upper cover, and positioning protrusions are provided on both sides of the upper end surface of the lower seat, and when the upper cover and the lower seat are buckled together, the positioning protrusions are engaged with the positioning grooves, and an arc-strike rod is extended from the upper cover or the lower seat.

[0008] Preferably, at least two positioning grooves are provided on one side of the lower end surface of the upper cover, and at least two positioning protrusions corresponding to the positioning grooves are provided on one side of the upper end surface of the lower seat.

[0009] Preferably, both sides of the upper cover and the lower seat are arc-shaped and the outer surfaces of both sides are arc surfaces, the positioning protrusion is an arc-shaped block, and the positioning groove is an arc-shaped groove that cooperates with the arc-shaped block.

[0010] Preferably, both sides of the upper cover and the lower seat are arc-shaped and the outer surfaces of both sides are arc surfaces, the positioning protrusion is an arc-shaped block, and the positioning groove is an arc-shaped groove that cooperates with the arc-shaped block. When the upper cover and the lower seat are buckled together, the arc surfaces on both sides just fit together to form a large arc surface, and the outer surfaces of the upper cover and the lower seat are provided with rainproof covers that fit their shapes to facilitate the rapid flow of rainwater.

[0011] Preferably, a limiting slide groove is provided at the end of the upper half groove, a positioning piece is slidingly provided in the limiting slide groove, the lower end of the positioning piece has a positioning arc groove, and the positioning piece is driven by a spring so that its positioning arc groove cooperates with the lower half groove to press and position the cable.

[0012] Preferably, a guide groove is provided on the inner wall of the limiting sliding groove, and a guide protrusion that cooperates with the guide groove is provided on the positioning piece.

[0013] Preferably, the arc-striking rod has an extension portion extending relative to the upper cover or the lower seat, and a bent portion bent relative to the extension portion, and an insulating sleeve is provided on the arc-striking rod.

[0014] Preferably, a rain cover is provided outside the upper cover and the lower seat, and a wire hole is reserved on the rain cover for the cables to pass through. The wire hole is combined with the upper half groove and the lower half groove to form a corresponding through groove for the line to pass through.

[0015] The beneficial effects of the present utility model are as follows: the present device enables the upper cover and the lower seat of the puncture wire clamp to cooperate with each other through the positioning groove and the positioning protrusion. Compared with simple positioning by bolts, the positioning groove and the positioning protrusion make the positioning of the upper cover and the lower seat more stable. The positioning protrusion acts like a waterproof platform to enhance the waterproof performance, and also ensures that the puncture blade will not move with the upper cover or the lower seat when the bolts are slightly loosened. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0017] Figure 1 This is a stereogram of Example 1;

[0018] Figure 2 This is a three-dimensional view from another angle of Example 1;

[0019] Figure 3 This is an exploded view of Example 1;

[0020] Figure 4 Schematic diagram of the upper cover structure of the embodiment;

[0021] In the figure, 1-upper cover, 101-bolt, 11-upper half groove, 12-positioning groove, 13-limiting slide groove, 131-guide groove, 14-positioning piece, 2-lower seat, 21-lower half groove, 22-positioning protrusion. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the embodiments and the accompanying drawings.

[0023] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0024] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0025] Example 1

[0026] like Figure 1-4As shown, an arc-proof puncture wire clamp includes an upper cover 1 and a lower seat 2 that cooperate with each other, and an arc-shaped upper half groove 11 and a lower half groove 21 are arranged in parallel on the surface where the upper cover 1 and the lower seat 2 are close to each other. The upper cover 1 and the lower seat 2 are buckled together so that the upper half groove 11 and the lower half groove 21 are combined to form a through groove for the line to pass through, and the upper half groove 11 and / or the lower half groove 21 are provided with a puncture blade and an elastic pad that facilitates the passage of the puncture blade; positioning grooves 12 are provided on both sides of the lower end surface of the upper cover 1, and positioning protrusions 22 are provided on both sides of the upper end surface of the lower seat 2. When the upper cover 1 and the lower seat 2 are buckled together, the positioning protrusions 22 are engaged with the positioning grooves 12, and an arc-strike rod is extended from the upper cover 1 or the lower seat 2.

[0027] This device enables the upper cover 1 and the lower seat 2 of the puncture wire clamp to cooperate with each other through the positioning groove 12 and the positioning protrusion 22. Compared with simply positioning by the bolt 101, the positioning groove 12 and the positioning protrusion make the positioning of the upper cover 1 and the lower seat 2 more stable. The positioning protrusion acts like a waterproof platform to enhance the waterproofness, and also ensures that the puncture blade will not move with the upper cover 1 or the lower seat 2 when the bolt is slightly loosened.

[0028] The lower end surface of the upper cover 1 is provided with at least two positioning grooves 12 on one side, and the upper end surface of the lower seat 2 is provided with at least two positioning protrusions 22 corresponding to the positioning grooves 12 on one side, so that the lower end surface of the upper cover 1 and the upper end surface of the lower seat 2 are tooth-shaped matched.

[0029] A limiting slide groove 13 is provided at the end of the upper half groove 11, and a positioning piece 14 is slidingly provided in the limiting slide groove 13. The lower end of the positioning piece 14 has a positioning arc groove. The positioning piece 14 is driven by a spring so that its positioning arc groove cooperates with the lower half groove 21 to press and position the cable.

[0030] A guide groove 131 is provided on the inner wall of the limiting sliding groove 13 , and a guide protrusion that cooperates with the guide groove 131 is provided on the positioning piece 14 .

[0031] The arc-striking rod has an extension portion extending relative to the upper cover 1 or the lower seat 2, and a bent portion bent relative to the extension portion. An insulating sleeve is sleeved on the arc-striking rod.

[0032] In addition to what is shown in the patent documents provided in the background technology, the setting of the arc-starting rod in this device can also refer to (CN210693393U), a protective device for preventing overhead insulated wires from being broken by lightning strikes. The arc-starting rod is not shown in the drawings of this embodiment, but those skilled in the art can implement it by themselves according to the description of this technical solution in combination with the existing technology.

[0033] The upper cover 1 and the lower seat 2 are matched with a rain cover, and a wire hole is reserved on the rain cover for the cables to pass through. The wire hole is combined with the upper half groove 11 and the lower half groove 21 to form a through groove for the line to pass through. The technicians in this field can design the shape of the rain cover by themselves, and the material is insulating, wear-resistant and corrosion-resistant material.

[0034] Example 2

[0035] Example 2 is based on Example 1, in which both sides of the upper cover 1 and the lower seat 2 are designed to be arc-shaped and the outer surfaces of both sides are arc surfaces, the positioning protrusion 22 is an arc block, and the positioning groove 12 is an arc groove that cooperates with the arc block. When the upper cover 1 and the lower seat 2 are buckled together, the arc surfaces on both sides just fit together to form a large arc surface, and the outer surfaces of the upper cover 1 and the lower seat 2 are provided with rainproof covers that fit their shapes to facilitate the rapid flow of rainwater.

[0036] Example 3

[0037] In Example 3, based on Example 1, the positioning protrusion 22 is an elongated protrusion provided along both sides of the upper end surface of the lower seat 2, and the positioning groove 12 is a long groove cooperating with the elongated protrusion, so that the positioning protrusion 22 can play a better water-blocking effect.

[0038] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An arc-proof puncture wire clamp, comprising an upper cover (1) and a lower seat (2) that cooperate with each other, wherein an arc-shaped upper half groove (11) and a lower half groove (21) are arranged in parallel on a side of the upper cover (1) and the lower seat (2) that are close to each other, and the upper cover (1) and the lower seat (2) are buckled together so that the upper half groove (11) and the lower half groove (21) are combined to form a through groove for the line to pass through, and a puncture blade and an elastic pad for facilitating the passage of the puncture blade are provided in the upper half groove (11) and / or the lower half groove (21); characterized in that Positioning grooves (12) are provided on both sides of the lower end surface of the upper cover (1), and positioning protrusions (22) are provided on both sides of the upper end surface of the lower seat (2). When the upper cover (1) and the lower seat (2) are buckled together, the positioning protrusions (22) are engaged with the positioning grooves (12), and an arc-starting rod is extended from the upper cover (1) or the lower seat (2).

2. The arc puncture prevention clamp according to claim 1, characterized in that: At least two positioning grooves (12) are provided on one side of the lower end surface of the upper cover (1), and at least two positioning protrusions (22) corresponding to the positioning grooves (12) are provided on one side of the upper end surface of the lower seat (2).

3. The arc puncture prevention clamp according to claim 1, characterized in that: The positioning protrusion (22) is a long convex strip arranged along both sides of the upper end surface of the lower seat (2), and the positioning groove (12) is a long groove matched with the long convex strip.

4. The arc puncture prevention clamp according to any one of claims 1 to 3, characterized in that: Both sides of the upper cover (1) and the lower seat (2) are arc-shaped and the outer surfaces of both sides are arc surfaces. The positioning protrusion (22) is an arc-shaped block, and the positioning groove (12) is an arc-shaped groove that matches the arc-shaped block.

5. The arc puncture prevention clamp according to claim 1, characterized in that: Limiting slide grooves (13) are provided at both ends of the upper half groove (11), and a positioning piece (14) is slidingly provided in the limiting slide groove (13). The lower end of the positioning piece (14) has a positioning arc groove, and the positioning piece (14) is driven by a spring so that its positioning arc groove cooperates with the lower half groove (21) to press and position the cable.

6. The arc puncture prevention clamp according to claim 5, characterized in that: A guide groove (131) is provided on the inner wall of the limiting sliding groove (13), and a guide protrusion matched with the guide groove (131) is provided on the positioning piece (14).

7. The arc puncture prevention clamp according to claim 1, characterized in that: The arc-starting rod comprises an extension portion extending relative to the upper cover (1) or the lower seat (2), and a bent portion bent relative to the extension portion; an insulating sleeve is sleeved on the arc-starting rod.

8. The arc puncture prevention clamp according to claim 1, characterized in that: The upper cover (1) A rain cover with a matching shape is provided outside the lower seat (2), and a wire hole is reserved on the rain cover for the wire to pass through. The wire-passing hole is combined with the upper half groove (11) and the lower half groove (21) to form a through groove for the line to pass through.

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