Quick insertion type strain clamp

Abstract

The invention discloses a quick-insertion type strain clamp which comprises an insulating shield, a clamp pressing plate, a wedge block sliding groove, a wedge-shaped sliding block, a compression spring, a pressing type plug pin assembly, an insulator connecting block, an end insulator, a wire plug, a jumper plug, a nylon nut, a T-shaped copper wire clamp and a spring contact finger. The wedge block sliding groove, the pressing type plug pin assembly, the T-shaped copper wire clamp and the insulator connecting block are sequentially installed on the wire clamp pressing plate and are combined into a whole through the wire clamp pressing plate, and the insulating protective cover wraps the outer side of the whole structure. The strain clamp designed by the invention forms a whole body, a wire is pressed during construction, and the installation can be completed by inserting a plug according to requirements. An integral insulation form is adopted, the insulation performance is better, the U-shaped structure is adopted at the end part, and the cable can be suitable for tower types of various angles, and the universality is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power fittings, in particular to a fast-plug type strain clamp. BACKGROUND

[0002] At present, most of the existing insulating strain clamps are bolt type or wedge type, and it is difficult to meet the standard requirements for the holding force.

[0003] In the prior art, CN 222636947 U is an integrated fitting insulator strain string, and the specific clamp part is still a wedge clamp, and the connection structure of the clamp and the insulator paper is also different. SUMMARY

[0004] The purpose of the present application is to provide a fast-plug type strain clamp, which can solve the technical problems of insufficient holding force of the strain clamp, adaptability to the tower type, convenience of installation, and operation efficiency of power outage maintenance.

[0005] To achieve the above-mentioned purpose, the present application provides a fast-plug type strain clamp, which comprises an insulating cover, a clamp pressing plate, a wedge block sliding groove, a wedge-shaped sliding block, a compression spring, a press-type latch assembly, an insulator connecting block, an end insulator, a wire plug, a jumper plug, a nylon nut, a T-shaped copper clamp and a spring contact finger, wherein the T-shaped copper clamp and the spring contact finger comprise a T-shaped copper clamp and a spring contact finger, the wedge block sliding groove, the press-type latch assembly, the T-shaped copper clamp and the insulator connecting block are sequentially installed on the clamp pressing plate, and the wedge block sliding groove, the press-type latch assembly, the T-shaped copper clamp and the insulator connecting block are combined into a whole through the clamp pressing plate, a compression spring is installed between the press-type latch assembly and the T-shaped copper clamp, the wedge-shaped sliding block is placed in the wedge block sliding groove, the spring contact finger is placed in the T-shaped copper clamp, the wire plug is inserted into the T-shaped copper clamp after being crimped to the wire through the wedge-shaped sliding block, the two jumper plugs are inserted into the two ends of the T-shaped copper clamp after being crimped to the jumper, the nylon nut is connected and fixed to the jumper plug inserted into the T-shaped copper clamp, and the insulating cover is wrapped outside the whole structure.

[0006] A ring of protrusions is arranged outside the jumper plug, the nylon nut is installed after the jumper plug is inserted into the T-shaped copper clamp, the nylon nut is pressed outside the protrusions, and the jumper plug is fixed by the nylon nut.

[0007] The press-type latch assembly comprises a latch, a handle and a U-shaped hoop, the handle and the latch are installed on the U-shaped hoop, and the U-shaped hoop is fixed on the clamp pressing plate; when the handle is pressed, the handle drives the latch to open, and when the handle is released, the spring in the latch automatically closes; the latch on the press-type latch assembly is clamped in the rectangular notch on the wedge-shaped sliding block to fix the wedge-shaped sliding block.

[0008] The fast-plug type strain clamp is equipped with a wire plug and a jumper plug, which are respectively used for connecting the wire and the jumper.

[0009] When the wire plug is installed, the wire is inserted into the wire plug hole, and the wire plug is crimped to make it integrated with the wire; the wedge-shaped slider is pushed to make the catch pin on the press-in pin assembly catch the rectangular notch on the wedge-shaped slider to fix the wedge-shaped slider; the wire plug is inserted into the T-shaped copper wire clamp; the press-in pin assembly is pressed to make the wedge-shaped slider rebound by the force of the spring to clamp the wire plug and the wire.

[0010] When the handle is pressed, the handle pushes the catch pin to make the catch pin open; when the handle is released, the spring in the catch pin makes it automatically close.

[0011] The connecting block of the insulator is in the shape of a ball socket, which cooperates with the end insulator.

[0012] Three cold shrink sleeves are arranged, which wrap the non-insulated parts of the wire plug and the jumper plug.

[0013] The side of the wedge block sliding groove is opened T-shaped notch (female), which cooperates with the convex slot, i.e. T-shaped notch (male) on the wedge-shaped slider, to ensure the accuracy of the sliding of the wedge-shaped slider on the wedge block sliding groove.

[0014] The part of the wedge-shaped slider holding the wire is set as a bevel gear type to increase the holding force on the wire.

[0015] Three cold shrink sleeves of a certain length are arranged, which wrap the outside of the wire plug and the two jumper plugs after installation, playing an insulating role. The cold shrink sleeves wrap the non-insulated parts of the wire plug and the jumper plug. When the jumper plug is installed, the jumper is inserted into the jumper plug hole, and the jumper plug is crimped to make it integrated with the jumper; the jumper plug is inserted into the T-shaped copper wire clamp; the nylon nut is rotated to fix the jumper plug.

[0016] The spring contact finger is placed in the T-shaped copper wire clamp, and the inserted wire plug and jumper plug are connected through the spring contact finger and the T-shaped copper wire clamp to make the current flow form a loop.

[0017] The end insulator is installed on the hanging point, playing an insulating role and keeping a certain electrical distance between the quick plug type strain clamp and the iron tower.

[0018] The insulating shield wraps the entire strain clamp to ensure the overall insulation.

[0019] The wedge-shaped slider is made of insulating material.

[0020] The present application relates to the field of distribution network line strain clamp assembly, in particular to a fast insertion type strain clamp suitable for on-site rapid installation. The strain clamp designed by the present application constitutes a whole, and the installation can be completed by pressing the wire, inserting the plug according to the requirements. The whole insulation form is adopted, the insulation performance is better, the end adopts U-shaped structure, and can be applied to various angle towers, and the universal performance is good.

[0021] The fast insertion type strain clamp designed by the present application is a whole insulation form. The wedge-shaped sliding block is placed in the wedge sliding groove, the spring contact finger is placed in the T-shaped copper wire clamp, the wire plug is pressed to the wire and then inserted into the T-shaped copper wire clamp, the jumper plug is pressed to the jumper and then inserted into the T-shaped copper wire clamp, and the insulation cover is wrapped outside the whole product, and the cold shrink sleeve is wrapped around the non-insulation part of the wire plug and the jumper plug.

[0022] Compared with the prior art, the present application provides a fast insertion type strain clamp, which has the following beneficial effects: The whole insulation form is adopted, the insulator is provided, and the sufficient electrical distance is ensured.

[0023] On-site construction only needs to press the plug into the strain clamp, which greatly improves the on-site operation efficiency.

[0024] The end and the iron tower hanging point connection adopt U-shaped structure, which is suitable for various angle corner towers and meets the use of multiple working conditions.

[0025] The wedge-shaped structure holds the wire, and the press-wired mode is adopted, so that the safety is ensured in multiple forms. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the front view of the invention Figure 2 is the top view of the invention Figure 3 is the structure schematic diagram of the clamp pressing plate of the invention Figure 4 is the structure schematic diagram of the wedge sliding groove of the invention Figure 5 is the structure schematic diagram of the wedge-shaped sliding block of the invention Figure 6 is the structure schematic diagram of the press-type latch assembly of the invention Figure 7 is the structure schematic diagram of the insulation cover of the invention Figure 8 is the structure schematic diagram of the nylon nut of the invention Figure 9 is the structure schematic diagram of the cold shrink sleeve of the invention Figure 10 is the structure schematic diagram of the insulator connecting block of the invention Figure 11is the schematic diagram of the end insulator structure of the invention Figure 12 is the schematic diagram of the wire plug structure of the invention Figure 13 is the schematic diagram of the T-shaped copper wire clamp and spring contact finger structure of the invention Figure 14 is the schematic diagram of the jumper plug structure of the invention Figure 15 is the schematic diagram of the spring structure of the invention Wherein, 1-wire clamp pressing plate, 2-wedge block sliding groove, 3-wedge-shaped sliding block, 4-pressing type latch assembly, 5-insulating cover, 6-nylon nut, 7-cold shrink sleeve, 8-insulator connecting block, 9-end insulator, 10-wire plug, 11-T-shaped copper wire clamp and spring contact finger, 12-jumper plug, 13-compression spring, 2-1-T-shaped notch (female), 3-1-rectangular notch, 3-2-T-shaped notch (male), 3-3-bevel tooth type, 4-1-latch, 4-2-handle, 4-3-U-shaped hoop, 11-1-T-shaped copper wire clamp, 11-2-spring contact finger. DETAILED DESCRIPTION

[0027] The preferred technical solutions of the present application are described in detail below in combination with the drawings.

[0028] As shown in the drawings, the fast-plug type strain clamp of the present application comprises an insulating cover 5, a wire clamp pressing plate 1, a wedge block sliding groove 2, a wedge-shaped sliding block 3, a compression spring 13, a pressing type latch assembly 4, an insulator connecting block 8, an end insulator 9, a wire plug 10, a jumper plug 12, a nylon nut 6, a T-shaped copper wire clamp and spring contact finger 11, and a T-shaped copper wire clamp, wherein the T-shaped copper wire clamp and spring contact finger 11 comprises a T-shaped copper wire clamp 11-1 and a spring contact finger 11-2, the wedge block sliding groove 2, the pressing type latch assembly 4, the T-shaped copper wire clamp 11-1, and the insulator connecting block 8 are sequentially installed on the wire clamp pressing plate 1, the wedge block sliding groove 2, the pressing type latch assembly 4, the T-shaped copper wire clamp 11-1, and the insulator connecting block 8 are combined into a whole through the wire clamp pressing plate 1, a compression spring is installed between the pressing type latch assembly 4 and the T-shaped copper wire clamp 11-1, the wedge-shaped sliding block 3 is placed in the wedge block sliding groove 2, the spring contact finger 11-2 is placed in the T-shaped copper wire clamp 11-1, the wire plug 10 is inserted into the T-shaped copper wire clamp after being crimped to the wire, the wire plug is inserted into the T-shaped copper wire clamp after being crimped to the wire, the wire is located in the wedge-shaped sliding block and is clamped by the wedge-shaped sliding block, two jumper plugs 12 are respectively inserted into the two ends of the T-shaped copper wire clamp 11-1 after being crimped to the jumper wires, the nylon nut 6 is connected with the T-shaped copper wire clamp 11-1 and fixes the jumper plugs 12 inserted into the T-shaped copper wire clamp, and the insulating cover 5 is wrapped outside the whole structure.

[0029] A circle of protrusions is arranged outside the jumper plug 12, and a nylon nut 6 is installed after the jumper plug 12 is inserted into the T-shaped copper wire clamp, the nylon nut 6 is pressed outside the protrusions, and the jumper plug is fixed by the nylon nut.

[0030] The press-type latch assembly 4 includes a latch 4-1, a handle 4-2, and a U-shaped hoop 4-3; the handle and the latch are installed on the U-shaped hoop, and the U-shaped hoop is fixed on the wire clamp pressing plate; when the handle is pressed, the handle drives the latch to open, and when the handle is released, the spring in the latch makes it automatically close; the latch on the press-type latch assembly is clamped in the rectangular notch 3-1 on the wedge-shaped slider, and the wedge-shaped slider 3 is fixed.

[0031] The quick-insert type strain clamp is equipped with a wire plug and a jumper plug, which are used to connect the wire and the jumper respectively.

[0032] When the wire plug is installed, the wire is inserted into the wire plug hole, and the crimped wire plug is integrated with the wire; the wedge-shaped slider is pushed, and the latch on the press-type latch assembly is clamped in the rectangular notch on the wedge-shaped slider to fix the wedge-shaped slider; the wire plug is inserted into the T-shaped copper wire clamp; the press-type latch assembly is pressed, and the wedge-shaped slider is rebounded by the force of the spring to clamp the wire plug and the wire.

[0033] When the handle is pressed, the handle drives the latch to open, and when the handle is released, the spring in the latch makes it automatically close.

[0034] The inside of the insulator connecting block 8 is in the shape of a ball socket, which cooperates with the end insulator 9.

[0035] Three cold shrink sleeves 7 are arranged, which wrap around the non-insulated parts of the wire plug 10 and the jumper plug 12 respectively.

[0036] The side of the wedge block sliding groove 2 is opened T-shaped notch (female) 2-1, which cooperates with the convex groove on the wedge-shaped slider 3, i.e. T-shaped notch (male) 3-2, to ensure the accuracy of the sliding of the wedge-shaped slider 3 on the wedge block sliding groove 2.

[0037] The part of the wedge-shaped slider 3 holding the wire is set as bevel gear type 3-3, which increases the holding force on the wire.

[0038] Three cold shrink sleeves of a certain length are arranged, which wrap around the wire plug and the two jumper plugs after installation, playing an insulating role, and the cold shrink sleeves wrap around the non-insulated parts of the wire plug and the jumper plug When the jumper plug is installed, the jumper is inserted into the jumper plug hole, and the crimped jumper plug is integrated with the jumper; the jumper plug is inserted into the T-shaped copper wire clamp; and the nylon nut is rotated to fix the jumper plug.

[0039] The spring contact finger is placed in the T-shaped copper wire clamp, and the inserted wire plug and jumper plug are connected through the spring contact finger and the T-shaped copper wire clamp, so that the current forms a loop.

[0040] The end insulator is installed on the hanging point, plays an insulating role, and makes the fast-insertion type strain clamp and the iron tower keep a certain electrical distance.

[0041] The insulating shield wraps the entire strain clamp, so that the integral insulation is ensured.

[0042] The wedge-shaped sliding block is made of insulating material.

[0043] The fast-insertion type strain clamp designed by the application is an integral insulating form. The wedge-shaped sliding block is placed into the wedge sliding groove, the spring contact finger is placed into the T-shaped copper clamp, the wire plug is inserted into the T-shaped copper clamp after being crimped to the wire, the jumper plug is inserted into the T-shaped copper clamp after being crimped to the jumper, the insulating shield is wrapped outside the entire product, and the cold shrink sleeve is wrapped around the non-insulating parts of the wire plug and the jumper plug.

[0044] The strain clamp designed by the application constitutes an integral body, is suitable for fast installation on site, and can be installed by crimping the wire and inserting the plug according to requirements. The integral insulating form is adopted, so that the insulation performance is better. The end part adopts a U-shaped structure, so that the strain clamp can be applied to towers of various angles and has good universal performance.

Claims

1. A quick-connect tension clamp, characterized in that: The system includes an insulating cover, a wire clamp plate, a wedge block groove, a wedge-shaped slider, a compression spring, a press-type pin assembly, an insulator connecting block, an end insulator, a wire plug, a jumper plug, a nylon nut, a T-type copper wire clamp and spring contact finger, and a T-type copper wire clamp. The wedge block groove, press-type pin assembly, T-type copper wire clamp, and insulator connecting block are sequentially installed on the wire clamp plate. The clamp and insulator connecting block are assembled into a whole by the clamp pressure plate. A compression spring is installed between the press-type plug assembly and the T-type copper wire clamp. The wedge-shaped slider is placed into the wedge block groove, and the spring contact finger is placed into the T-type copper wire clamp. After the wire plug is crimped with the wire, it is inserted into the T-type copper wire clamp through the wedge-shaped slider. The two jumper plugs are crimped with the jumper wires and then inserted into both ends of the T-type copper wire clamp. The nylon nut is connected to the T-type copper wire clamp and fixes the jumper plug inserted into the T-type copper wire clamp. The insulating cover covers the outside of the entire structure.

2. The quick-connect tension clamp as described in claim 1, characterized in that: A raised ring is provided on the outside of the jumper plug. After the jumper plug is inserted into the T-shaped copper wire clamp, a nylon nut is installed. The nylon nut is pressed against the outside of the raised ring, which makes it easy for the nylon nut to fix the jumper plug.

3. A quick-connect tension clamp as described in claim 1 or 2, characterized in that: The push-button pin assembly includes a locking pin, a handle, and a U-shaped clamp. The handle and locking pin are mounted on the U-shaped clamp, which is fixed to the line clamping plate. When the handle is pressed, the handle pushes the locking pin to open it. When the handle is released, the spring inside the locking pin automatically closes it. The locking pin on the push-button pin assembly engages with the rectangular slot on the wedge-shaped slider to fix the wedge-shaped slider.

4. The quick-connect tension clamp as described in claim 3, characterized in that: The inside of the insulator connecting block is shaped like a ball socket, which mates with the end insulator.

5. A quick-connect tension clamp as described in claim 4, characterized in that: Three cold shrink tubing units are installed, which are respectively wrapped around the uninsulated parts of the wire plug and jumper plug.

6. A quick-connect tension clamp as described in claim 5, characterized in that: The wedge block slide has a T-shaped groove (female) on its side, which matches the convex groove (male) on the wedge slider to ensure the accuracy of the wedge slider sliding on the wedge block slide.

7. A quick-connect tension clamp as described in claim 6, characterized in that: The wedge-shaped slider's gripping part is designed with helical teeth to increase its gripping force on the wire.

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