A live-line clamp installation tool

Abstract

This invention provides a live-line installation tool for a wire clamp. The wire clamp includes a threaded metal rod that drives the movable wire clamp to move up and down. The bottom of the threaded metal rod has a plug-in portion, and the outer sides of the wire clamp also have snap-fit ​​portions. The live-line installation tool includes: a handheld torque meter; an insulated operating rod connected to the handheld torque meter, which has a drive shaft inside. The input end of the drive shaft is connected to the output end of the handheld torque meter, and the output end of the drive shaft is connected to a rotating head; and a clamp connected to the end of the insulated operating rod for clamping the wire clamp. This invention can improve the safety and reliability of live-line work.

Description

Technical Field

[0001] This invention relates to the field of grounding clamp technology, and in particular to a live-line installation tool for a clamp. Background Technology

[0002] In recent years, with the advancement and implementation of a series of measures such as increasing the intensity of power grid transformation, optimizing the business environment, and improving the management of live-line work in distribution networks, live-line work has become an important part of the distribution network maintenance system. As an important tool for live-line work in distribution networks, electrical connection clamps, especially distribution network lead wire connection clamps, are used more frequently.

[0003] In the application research of live-line working, the operation without direct human contact with live conductors is a widely studied topic in power systems. Currently, the research and development of insulated operating rods has entered the product pilot stage. However, traditional connecting clamps used for splicing lead wires have long been developed and produced based on the manual splicing method, which results in low work efficiency, low safety performance, and poor reliability. Summary of the Invention

[0004] The purpose of this invention is to provide a live-line clamp installation tool to improve the safety and reliability of uninterrupted power supply operations.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] A live-line installation tool for a wire clamp, the wire clamp including a threaded metal rod that drives the movable wire clamp to move up and down, the bottom of the threaded metal rod having a plug-in portion, and the outer sides of the wire clamp also having snap-fit ​​portions, the live-line installation tool comprising:

[0007] Handheld torque meter;

[0008] An insulated operating rod is connected to the handheld torque meter. It has a transmission shaft inside. The input end of the transmission shaft is connected to the output end of the handheld torque meter, and the output end of the transmission shaft is connected to a rotating head.

[0009] A clamp, connected to the end of the insulating operating rod, the clamp comprising:

[0010] A slide base is fitted onto the end of the insulating operating rod, and its upper surface is used to support the wire clamp. The top of the rotating head protrudes from the upper surface of the slide base and is used to cooperate with the insertion part at the bottom of the metal threaded rod.

[0011] The lower plate is located below the slide base, and a guide post is fixed on the slide base. The lower plate is slidably connected to the guide post.

[0012] An inclined panel is provided on the lower plate, and its two ends are provided with inclined surfaces facing outward and downward;

[0013] Two guide blocks, positioned opposite each other, are mounted on the slide base and have a vertical first guide groove on them;

[0014] Two L-shaped top blocks are respectively disposed in the guide block and can move along the first guide groove, with the first lateral extension of their side ends facing outward; the bottom of the two top blocks is provided with springs to return the top blocks to their initial positions;

[0015] Two guide rail plates, which are arranged opposite to each other, are mounted on the slide base and are provided with a second transverse guide groove.

[0016] Two F-shaped buckles are respectively disposed in the guide rail plate and can move along the second guide groove. The second lateral extension of the buckle at the upper end protrudes from the upper surface of the slide base and faces inward, for cooperating with the snap-fit ​​part of the wire clamp. The third lateral extension at the lower end faces inward and cooperates with the first lateral extension. Its bottom faces the inclined surface of the inclined panel. Springs are provided on the outer sides of the two buckles to return the buckles to their initial position.

[0017] The lower plate lifting assembly is used to control the lower plate to move upward along the guide post;

[0018] The clamp has a free state, a clamping state, and a released state: In the free state, the tops of the two top blocks protrude from the upper surface of the slide base, and the first lateral extension abuts against the third lateral extension; In the clamping state, the wire clamp is placed on the upper surface of the slide base, the tops of the two top blocks are lowered to be flush with the upper surface of the slide base, the two latches move inward, the second lateral extension locks the wire clamp, and the bottom of the latch abuts against the inclined surface of the inclined panel; In the released state, the lower plate lifting assembly controls the lower plate to move upward, the inclined panel drives the latches to move outward, the second lateral extension separates from the wire clamp, after the wire clamp is removed, the top blocks move upward, the lower plate lifting assembly controls the lower plate to return to its initial position, and the top blocks and the latches return to their initial positions.

[0019] Optionally, the lower plate lifting assembly includes:

[0020] A fixed pulley is disposed on the slide table base;

[0021] A turntable is provided, and a bracket is mounted on the handheld torque meter. The turntable is mounted on the bracket via a bearing clamp, and a handle is mounted on the side of the turntable.

[0022] A rope, one end of which is wound and fixed to the turntable, and the other end of which passes over the fixed pulley and is fixed to the lower plate.

[0023] Optionally, the second lateral extension, the third lateral extension, and the bottom of the buckle are provided with rollers.

[0024] Optionally, the end face of the first lateral extension is provided with an arc-shaped groove that matches the roller of the second lateral extension.

[0025] Optionally, the two buckles are provided with rollers on their sides, and the guide rail plate is also provided with transverse raceways that match the rollers.

[0026] Optionally, the two top blocks are provided with rollers on their sides, and the guide block is also provided with vertical raceways that match the rollers.

[0027] Optionally, the upper surface of the slide base is provided with a wire clamp guide block for coarse positioning of the wire clamp.

[0028] Optionally, the clamp further includes a lower bearing seat disposed under the slide seat to provide support for the rotating head.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The live-line clamp installation tool provided by this invention enables direct pole-mounted live-line installation, ensuring the safety and reliability of uninterrupted power supply operations. It also simplifies the operation for personnel and tools, improves work efficiency, and reduces equipment operating costs. Attached Figure Description

[0031] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0032] Figure 1 This is a structural diagram of a live-line clamp installation tool according to an embodiment of the present invention;

[0033] Figure 2 A structural diagram showing the installation of wire clamps on a live-line installation tool;

[0034] Figure 3 This is a structural diagram of the clamp;

[0035] Figure 4a , 4b Figures 4c and 4c show the gripper in the free state, gripping state, and released state, respectively.

[0036] Figure 5 This is a structural diagram of the top block;

[0037] Figure 6 This is a structural diagram of the snap fastener;

[0038] Figure 7 A schematic diagram showing the fit between the guide block, top block, guide rail plate, and buckle;

[0039] Figure 8 This is a schematic diagram of a wire clamp. Detailed Implementation

[0040] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the solution proposed by the present invention. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of the present invention. Please refer to the drawings to make the objectives, features, and advantages of the present invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the present invention, should still fall within the scope of the technical content disclosed in the present invention.

[0041] First, the wire clamps applicable to the live-line installation tools provided by this invention are as follows: Figure 2 and 8As shown, the wire clamp 100 includes a metal threaded rod 20 that drives the movable wire clamp 30 to move up and down. The bottom of the metal threaded rod 20 is provided with a plug-in part 21, and the outer sides of the wire clamp 100 are also provided with snap-fit ​​parts 53. The clamp 100 further includes: a fixed clamp 10, which has an opening on one side to form an inner cavity 12 for accommodating the main conductor A; the side wall of the fixed clamp 10 has a third guide groove 13 and a through hole penetrating the top and bottom surfaces of the fixed clamp 10; a metal threaded rod 20, which passes through the through hole from bottom to top; a movable clamp 30, which is disposed in the inner cavity 12, with one end inserted into the third guide groove 13 and threadedly connected to the metal threaded rod 20; when the metal threaded rod 20 rotates, it drives the movable clamp 30 to move upward along the metal threaded rod 20 to clamp and secure the main conductor A; a quick-connect connector 40, which is connected to the fixed clamp 10; a drain wire B passes through the quick-connect connector 40 and then contacts the fixed clamp 10; and an insulating layer, which includes an insulating wrapper and two insulating side blocks; the insulating wrapper covers the outer surface of the fixed clamp 10 to achieve insulation; and the two insulating side blocks are installed on both sides of the movable clamp 30. The snap-fit ​​portion 53 is disposed on both sides of the outer surface of the insulating wrapper.

[0042] like Figures 1-7 As shown, an embodiment of the present invention provides a live-line installation tool suitable for the above-mentioned wire clamp 100. The live-line installation tool includes: a handheld torque meter 200; an insulated operating rod 300 connected to the handheld torque meter 200, which is hollow inside and has a drive shaft. The input end of the drive shaft is connected to the output end of the handheld torque meter 200, and the output end of the drive shaft is connected to a rotating head 310; and a clamp 400 connected to the end of the insulated operating rod 300 for clamping the wire clamp 100. When the wire clamp 100 is placed on the clamp 400, the rotating head 310 is inserted into the insertion part 21 at the bottom of the metal threaded rod 20 of the wire clamp 100. The handheld torque meter 200 is turned on, and the torque is transmitted to the metal threaded rod 20 through the drive shaft and the rotating head 310, causing the metal threaded rod 20 to rotate and drive the movable wire clamp 30 to move upward, thereby tightly clamping the main wire A between the movable wire clamp 30 and the fixed wire clamp 10. The handheld torque meter 200 can be equipped with a digital display instrument to display the torque value, so that the operator can easily judge whether the torque value has reached the set value. The set value is the torque value that can tighten the main guide line A by means of test obtained in advance.

[0043] Specifically, the clamp 400 includes: a slide base 410, a lower plate 420, an inclined plate 430, two guide blocks 440, two L-shaped top blocks 450, two guide rail plates 460, two F-shaped buckles 470, and a lower plate lifting assembly.

[0044] The slide base 410 is sleeved on the end of the insulating operating rod 300, and its upper surface is used to support the wire clamp 100. The top of the rotating head 310 protrudes from the upper surface of the slide base 410 and is used to cooperate with the insertion part 21 at the bottom of the metal threaded rod 20.

[0045] The lower plate 420 is located below the slide base 410. A guide post 411 is fixed on the slide base 410, and the lower plate 420 is slidably connected to the guide post 411.

[0046] An inclined panel 430 is disposed on the lower plate 420, and its two ends are provided with inclined surfaces facing outward and downward.

[0047] Two guide blocks 440 are arranged opposite to each other on the slide base 410, and each has a vertical first guide groove 441.

[0048] Two L-shaped top blocks 450 are respectively disposed within the guide block 440 and can move along the first guide groove 441, with their first lateral extensions 451 facing outward. It should be noted that "outer side" here refers to the direction away from the position between the two top blocks 450, while "inner side" in the following text refers to the direction towards the position between the two top blocks 450.

[0049] Two guide rail plates 460 are arranged opposite to each other on the slide base 410, and a second guide groove 461 is provided on them.

[0050] Two F-shaped buckles 470 are respectively disposed in the guide rail plate 460 and can move along the second guide groove 461. The second lateral extension 471 with its side end located above protrudes from the upper surface of the slide base 410 and faces inward, for cooperating with the snap-fit ​​part 53 of the wire clamp 100. The third lateral extension 472 located below faces inward and cooperates with the first lateral extension 451, and its bottom faces the inclined surface of the inclined panel 430.

[0051] The lower plate lifting assembly is used to control the lower plate 420 to move upward along the guide post 411.

[0052] The gripper 400 has a free state, a gripping state, and a released state. For example... Figure 4aAs shown, in the free state (without the wire clamp 100), the tops of the two top blocks 450 protrude from the upper surface of the slide base 410, and the first lateral extension 451 abuts against the third lateral extension 472. Specifically, the bottom of the two top blocks 450 is provided with a spring, the bottom of the spring abuts against the bottom of the first guide groove 441, and the top abuts against the top block 450. The spring provides an upward elastic force to the top block 450, causing the tops of the two top blocks 450 to protrude from the upper surface of the slide base 410. The outer sides of the two latches 470 are also provided with springs, one end of the spring abuts against the guide rail plate 460, and the top of the other end abuts against the latch 470. The spring provides an inward elastic force to the latch 470, causing the third lateral extension 472 on the latch 470 to abut against the first lateral extension 451 of the top block 450 (i.e., the third lateral extension 472 engages the first lateral extension 451).

[0053] like Figure 4b As shown, in the clamping state, the wire clamp 100 is placed on the upper surface of the slide base 410. Figure 4b (Not shown, wire clamp 100) The weight of the wire clamp 100 causes the tops of the two top blocks 450 to drop to be flush with the upper surface of the slide base 410. The first lateral extension 451 moves down, and the third lateral extension 472 is unrestricted. As a result, under the action of the spring, the two latches 470 will move inward. Then, the second lateral extension 471 will cooperate with the latching part 53 of the wire clamp 100 to lock the wire clamp 100. At this time, the bottom of the latch 470 is exactly abutting the inclined surface of the inclined panel 430 (the contact point is located at the upper part of the inclined surface). The third lateral extension 472 is located above the first lateral extension 451.

[0054] like Figure 4c As shown, in the released state, the lower plate lifting assembly controls the lower plate 420 to move upward, that is, the inclined panel 430 moves upward. The inclined surface of the inclined panel 430 causes the buckle 470 to move outward, and the second lateral extension 471 separates from the wire clamp 100 (that is, the wire clamp 100 is automatically released). After the wire clamp 100 is released, the top block 450 moves upward under the action of the spring, so that the wire clamp 100 is subjected to a push-out force when it is released, which can reduce the jamming phenomenon. At this time, the top block 450 returns to the initial position (that is, the position in the free state, such as...). Figure 4a (As shown). Then, the lower plate lifting assembly controls the lower plate 420 to return to its initial position (i.e., the lower plate 420 moves downward). At this time, the latch 470 returns to its initial position (i.e., its free state position, as shown) under the action of the spring. Figure 4a (As shown).

[0055] Preferably, such as Figure 6 As shown, the second lateral extension 471, the third lateral extension 472, and the bottom of the buckle 470 are provided with rollers. This ensures that the second lateral extension 471 has rolling contact with the engaging portion 53 of the wire clamp 100, the third lateral extension 472 has rolling contact with the first lateral extension, and the bottom of the buckle 470 has rolling contact with the inclined panel 430, thereby reducing friction on the contact surfaces. Furthermore, as... Figure 5 As shown, the end face of the first lateral extension 451 is provided with an arc-shaped groove that matches the roller of the second lateral extension 471, so that the second lateral extension 471 can lock the first lateral extension 451.

[0056] like Figure 6 , Figure 7 As shown, the two latches 470 are provided with rollers on their sides, and the guide rail plate 460 is also provided with transverse raceways that match the rollers. The two top blocks 450 are provided with rollers on their sides, and the guide block 440 is also provided with vertical raceways that match the rollers. This allows the latches 470 and the top blocks 450 to move more smoothly.

[0057] In this embodiment, the upper surface of the slide base 410 is provided with a wire clamp guide block 480 for positioning the wire clamp 100 so that the wire clamp 100 can be accurately placed.

[0058] In this embodiment, the clamp also includes a lower bearing seat 490, which is fixed to the lower part of the slide seat 410 to provide support for the rotating head 310.

[0059] In this embodiment, the lower shelf lifting assembly includes: a fixed pulley 510 disposed on the slide base 401; a turntable 520, on which a bracket 530 is mounted on the handheld torque meter 200, the turntable 520 being mounted on the bracket 530 via a bearing clamp 540, and a handle 550 mounted on the side of the turntable 520; and a rope 560, one end of which is wound and fixed to the turntable 520, and the other end of which passes around the fixed pulley 510 and is fixed to the lower shelf 420. In this embodiment, a hand-cranked lower shelf lifting assembly is used to control the upward movement of the lower shelf 420, thereby controlling the opening and closing of the buckle 470. After the wire clamp 100 is installed, it is possible to manually release the wire clamp 100, thus ensuring that the buckle 470 can be easily released without the slide base 410 being stationary, allowing the wire clamp 100 to fall off smoothly. In other embodiments, the lower shelf lifting assembly may also adopt other methods, which are not limited by this invention.

[0060] The method of using the live-line installation tool provided by the present invention is as follows: First, with the clamp 400 in a free state, the wire clamp 100 is placed on the upper surface of the slide base 410, so that the wire clamp is converted to a clamping state. The operator sends the wire clamp 100 to the position to be installed, and fixes the main wire in the wire clamp 100 by controlling the handheld torque meter 200. Then, the lower plate 420 is moved upward by the lower plate lifting assembly, so that the clamp 400 releases the wire clamp 100.

[0061] In summary, the live-line clamp installation tool provided by this invention enables direct pole-mounted live-line installation operations, ensuring the safety and reliability of uninterrupted power supply operations. It also simplifies the work for personnel and tools, improves work efficiency, and reduces equipment operating costs.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0063] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A live-line clamp installation tool, characterized in that, The wire clamp includes a threaded metal rod that drives the movable wire clamp to move up and down. The bottom of the threaded metal rod has a insertion part, and the outer sides of the wire clamp also have locking parts. The live-line installation tool includes: Handheld torque meter; An insulated operating rod is connected to the handheld torque meter. It has a transmission shaft inside. The input end of the transmission shaft is connected to the output end of the handheld torque meter, and the output end of the transmission shaft is connected to a rotating head. A clamp, connected to the end of the insulating operating rod, the clamp comprising: A slide base is fitted onto the end of the insulating operating rod, and its upper surface is used to support the wire clamp. The top of the rotating head protrudes from the upper surface of the slide base and is used to cooperate with the insertion part at the bottom of the metal threaded rod. The lower plate is located below the slide base, and a guide post is fixed on the slide base. The lower plate is slidably connected to the guide post. An inclined panel is provided on the lower plate, and its two ends are provided with inclined surfaces facing outward and downward; Two guide blocks, positioned opposite each other, are mounted on the slide base and have a vertical first guide groove on them; Two L-shaped top blocks are respectively disposed in the guide block and can move along the first guide groove, with the first lateral extension of their side ends facing outward; the bottom of the two top blocks is provided with springs to return the top blocks to their initial positions; Two guide rail plates, which are arranged opposite to each other, are mounted on the slide base and are provided with a second transverse guide groove. Two F-shaped buckles are respectively disposed in the guide rail plate and can move along the second guide groove. The second lateral extension of the buckle at the upper end protrudes from the upper surface of the slide base and faces inward, for cooperating with the snap-fit ​​part of the wire clamp. The third lateral extension at the lower end faces inward and cooperates with the first lateral extension. Its bottom faces the inclined surface of the inclined panel. Springs are provided on the outer sides of the two buckles to return the buckles to their initial position. The lower plate lifting assembly is used to control the lower plate to move upward along the guide post; The clamp has a free state, a clamping state, and a released state: In the free state, the tops of the two top blocks protrude from the upper surface of the slide base, and the first lateral extension abuts against the third lateral extension; In the clamping state, the wire clamp is placed on the upper surface of the slide base, the tops of the two top blocks are lowered to be flush with the upper surface of the slide base, the two latches move inward, the second lateral extension locks the wire clamp, and the bottom of the latch abuts against the inclined surface of the inclined panel; In the released state, the lower plate lifting assembly controls the lower plate to move upward, the inclined panel drives the latches to move outward, the second lateral extension separates from the wire clamp, after the wire clamp is removed, the top blocks move upward, the lower plate lifting assembly controls the lower plate to return to its initial position, and the top blocks and the latches return to their initial positions.

2. The live-line installation tool for the wire clamp as described in claim 1, characterized in that, The lower plate lifting assembly includes: A fixed pulley is disposed on the slide table base; A turntable is provided, and a bracket is mounted on the handheld torque meter. The turntable is mounted on the bracket via a bearing clamp, and a handle is mounted on the side of the turntable. A rope, one end of which is wound and fixed to the turntable, and the other end of which passes over the fixed pulley and is fixed to the lower plate.

3. The live-line installation tool for the wire clamp as described in claim 1, characterized in that, The second lateral extension, the third lateral extension, and the bottom of the buckle are provided with rollers.

4. The live-line installation tool for the wire clamp as described in claim 3, characterized in that, The end face of the first lateral extension is provided with an arc-shaped groove that matches the roller of the second lateral extension.

5. The live-line installation tool for the wire clamp as described in claim 1, characterized in that, The two buckles are provided with rollers on their sides, and the guide rail plate is also provided with transverse raceways that match the rollers.

6. The live-line installation tool for the wire clamp as described in claim 1, characterized in that, The two top blocks are provided with rollers on their sides, and the guide block is also provided with vertical raceways that match the rollers.

7. The live-line installation tool for the wire clamp as described in claim 1, characterized in that, The upper surface of the slide base is provided with a wire clamp guide block for coarse positioning of the wire clamp.

8. The live-line installation tool for the wire clamp as described in claim 1, characterized in that, The clamp also includes a lower bearing seat, which is disposed at the lower part of the slide seat to provide support for the rotating head.

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