Live-line work insulation lock rod

Abstract

The utility model relates to the technical field of electric power facility maintenance, in particular to a live-line work insulation lock rod, which comprises a main rod and a pull rod, the head end of the main rod is provided with a clamp, the tail end of the main rod is provided with a first handle, the clamp is connected with the head end of the pull rod, and the tail end of the pull rod is provided with an operation part which is positioned on the main rod; the clamp comprises a fixed clamp body and a movable clamp body which are hinged to each other, and the top of the movable clamp body and the top of the fixed clamp body are each provided with a guide end used for guiding a clamped wire into the clamp. Compared with a jaw structure of a traditional lock rod, the top of the movable clamp and the top of the fixed clamp are each provided with a corresponding guide end, the jaw structure is in the trend that an opening is expanded, the clamping space is not changed, a clamped wire is guided and conveniently guided in, and the situation that the wire is difficult to enter due to the fact that a jaw is small is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power facility maintenance, in particular to an insulating locking rod for live working. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] An insulated locking rod is a tool used for live working. It is generally composed of an insulating rod body and accessory tools installed at the end of the insulating rod. Depending on the different working requirements, the end is equipped with different tool accessories, allowing complex operations such as disconnecting and connecting flow lines in live environments.

[0004] For example, an insulated locking rod equipped with a clamp requires operators to use the clamp at the end of the rod to secure the cable end and move it to the designated location. However, due to the complex cable routing and the close spacing between cables, operators can be hindered from performing their normal work. Furthermore, the clamp opening on the insulated locking rod is small, and the lack of a cable guide makes it difficult to accurately align the cable during clamping. Furthermore, due to the same clamping issues, after clamping the conductor, the cable often rotates within the jaws or escapes from the jaws. Utility Model Content

[0005] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides an insulating locking rod for live working. By improving the structure of the jaws, a structure for guiding the cable into the clamp is added on the basis of not changing the clamping space of the jaws, which helps the staff to clamp the cable quickly. By improving the structure of the flange and the dividing shaft in the operating part, the stability of the torsion spring during action is improved, and the reliability of the clamp action is indirectly improved. It can adapt to the high-voltage and static electricity environment on site, and improve the work efficiency of on-site operators while ensuring the safety of the workers.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an insulating lock rod for live working, comprising a main rod and a pull rod, wherein a clamp is provided at the head end of the main rod and a first handle is provided at the tail end, the clamp is connected to the head end of the pull rod, and an operating part is provided at the tail end of the pull rod, and the operating part is located on the main rod;

[0008] The clamp comprises a fixed clamp and a movable clamp which are hinged to each other. The tops of the movable clamp and the fixed clamp are both provided with guiding ends for guiding the clamped wires into the clamp.

[0009] Furthermore, the direction of the movable clamp's guide end is different from the direction of the movable clamp's top end, and the direction of the fixed clamp's guide end is different from the direction of the fixed clamp's top end. When the movable clamp and the fixed clamp are opened, the jaw structure formed shows a tendency to expand the opening.

[0010] Furthermore, a transverse pattern is provided on the inner side of the jaw area of the movable clamp.

[0011] Furthermore, the transverse pattern is serrated.

[0012] Furthermore, a vertical pattern is provided on the inner side of the jaw area of the fixed clamp.

[0013] Furthermore, the operating part includes a locking device connected to the main rod and a second handle movably connected to the tail end of the pull rod. The second handle is provided with a flange. The locking device has a dividing shaft. One end of the dividing shaft is connected to the torsion spring and is connected to the handle. The space between the inner side of the flange and the second handle accommodates the torsion spring.

[0014] Furthermore, the indexing shaft is a hollow shaft, one end of which is provided with ratchet teeth, the other end of which is provided with a groove that cooperates with the torsion spring, and the middle part of which is provided with a bearing mounting position.

[0015] Furthermore, the root of the fixed clamp is fixed to the end of the main rod, and the root of the movable clamp is movably connected to the end of the pull rod. A rotating shaft is provided on the fixed clamp. The root of the movable clamp is pulled by the pull rod, causing the top end to rotate around the rotating shaft, forming an opening and closing movement with the fixed clamp.

[0016] Furthermore, protective covers are provided on both the pull rod and the main rod.

[0017] Furthermore, the first handle is provided with anti-slip textures.

[0018] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0019] 1. Compared with the jaw structure of the traditional locking rod, corresponding guide ends are set on the top of the movable clamp and the fixed clamp to guide the clamped wire and easily introduce the wire, avoiding the difficulty of wire entry caused by the small jaws.

[0020] 2. Compared with the jaw structure of the traditional locking rod, by setting horizontal and vertical patterns on the inner side of the jaw area of the two clamps, the contact friction with the wire is increased, which prevents the wire from rotating in the jaws and avoids the problem of the wire easily falling out of the jaws due to insufficient clamping force or clamping deformation.

[0021] 3. Compared with the torsion spring limiting structure of the traditional locking rod, the torsion spring is located in the space between the inner side of the flange and the second handle. The two sides of the torsion spring are respectively limited by the inner side of the flange and the second handle, which can avoid the swing problem of the torsion spring and thus improve the clamping stability of the clamp.

[0022] 4. An integrated indexing shaft is used to replace the split indexing shaft structure in the traditional locking rod. That is, the groove required for assembling the torsion spring is processed on a hollow indexing shaft to match the ratchet teeth of the locking device and the bearing mounting position for supporting the rotation action. This reduces the assembly concentricity requirements and avoids the problem of easy loosening caused by the split structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 This is a structural diagram of the insulating lock rod provided by the utility model;

[0025] Figure 2 This is a structural diagram of the insulated locking rod clamp provided by the utility model;

[0026] Figure 3 This is a structural diagram of the insulating lock rod operating portion provided by the utility model;

[0027] Figure 4 This is a structural diagram of the second handle of the insulating lock rod provided by the utility model;

[0028] Figure 5 It is a structural schematic diagram of the insulating lock rod indexing shaft provided by the utility model.

[0029] Figure 1 Middle: 1 clamp, 2 main rod, 3 pull rod, 4 protective cover, 5 operating part, 6 first handle, 7 second handle;

[0030] Figure 2 Middle: 11 rotating shaft, 12 transverse pattern, 13 movable clamp, 14 movable clamp guide end, 15 fixed clamp guide end, 16 vertical pattern, 17 fixed clamp, 18 upper joint;

[0031] Figure 3-Figure 4 Middle: 51 flange, 52 torsion spring, 53 indexing shaft;

[0032] Figure 5 Middle: 531 ratchet teeth, 532 bearing mounting position, 533 groove. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] It should be noted that the terms herein are only used to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] As introduced in the background technology, the insulating locking rod in the existing technology (CN202020902408.9 A self-locking insulating operating rod) lacks a cable guiding mechanism in the clamp opening, which makes it difficult to accurately align the cable during the cable clamping operation; after clamping the wire, the cable often rotates in the jaws or the cable falls out of the jaws.

[0037] Therefore, the following embodiment provides an insulating locking rod for live working. By improving the structure of the jaws, a structure for guiding the cable into the clamp is added without changing the clamping space of the jaws, which helps the staff to quickly clamp the cable. By improving the structure of the flange and the dividing shaft in the operating part, the stability of the torsion spring during action is improved, and the reliability of the clamp action is indirectly improved. It can adapt to the high-voltage and static electricity environment on site, and improve the work efficiency of on-site operators while ensuring the safety of the workers.

[0038] like Figure 1 As shown, the live working insulating lock rod includes a main rod 2 and a pull rod 3. A clamp 1 is provided at one end of the main rod 2, and a first handle 6 is provided at the other end of the main rod 2. The clamp 1 is connected to one end of the pull rod 3, and an operating part 5 is provided at the other end of the pull rod 3. The operating part 5 is connected to the main rod 2.

[0039] The pull rod 3 and the main rod 2 are made of insulating pipes, and protective covers 4 are provided on the pull rod 3 and the main rod 2 for isolating arc discharge.

[0040] Preferably, the number of protective covers on the main rod and the pull rod is not less than 2.

[0041] The first handle 6 is provided with a mesh anti-skid pattern and is made of rubber, so that the staff can hold it easily without slipping.

[0042] like Figure 2As shown, the clamp 1 includes a fixed clamp 17 and a movable clamp 13 that are hinged to each other. The root of the fixed clamp 17 is fixed to the end of the main rod 2 by a pin, and the root of the movable clamp 13 is movably connected to the end of the pull rod 3 through an upper joint 18. A rotating shaft 11 is provided on the fixed clamp 17. The root of the movable clamp 13 is pulled by the pull rod 2, causing the top end to rotate around the rotating shaft 11, forming an opening and closing movement with the fixed clamp 17, thereby achieving cable clamping.

[0043] The tops of the movable clamp 13 and the fixed clamp 17 are both provided with guiding ends, and the direction of the guiding ends is different from the direction of the jaws formed by the two, which is used to guide the clamped wires, facilitate the introduction of the wires, and avoid difficulties in wire entry due to small jaws.

[0044] Specifically, the direction pointed by the guide end 14 of the movable clamp is different from the direction pointed by the top end of the movable clamp 13, and the direction pointed by the guide end 15 of the fixed clamp is different from the direction pointed by the top end of the fixed clamp 17. This structure makes the jaw structure formed by the movable clamp 13 and the fixed clamp 17 show a tendency to expand the opening without affecting the internal space of the opening, so that the cable can be more easily fed into the jaws and clamped and fixed.

[0045] The inner side of the jaw area of the movable clamp 13 is provided with a transverse pattern 12, which is serrated and is used to prevent the wire from rotating;

[0046] The inner side of the jaw area of the fixed clamp 17 is provided with a vertical pattern 16. Preferably, the pattern thickness is 2mm to 4mm, and there are 2 to 4 lines. The vertical pattern 16 is sharpened to achieve a firm clamping of the wire insulation layer or bare wire to prevent the wire from falling out of the jaws.

[0047] By arranging transverse patterns 12 and vertical patterns 16 on the inner side of the jaws of the two clamps, the contact friction with the wire is increased, thereby preventing the wire from rotating in the jaws. After the clamps are closed, the patterns in the two directions are staggered to form a cross locking structure, further preventing the wire from rotating in the jaws, and at the same time avoiding the problem of the wire escaping from the jaws due to insufficient clamping force or clamping deformation.

[0048] The transverse and vertical patterns are only provided in the inner area of the jaws, but not on the surface of the guide end, in order to make the guide end have relatively smaller friction, so as to facilitate the cable to quickly pass through the guide area to the jaw area.

[0049] like Figure 3-Figure 4As shown, the operating part 5 includes a locking device connected to the main rod 2, and a second handle 7 movably connected to the tail end of the pull rod 3. The second handle 7 is provided with a flange 51. The locking device has a dividing shaft 53. The dividing shaft 53 is connected to one end of the torsion spring 52 connected to the handle 7. The space between the inner side of the flange 51 and the second handle 7 accommodates the torsion spring 52.

[0050] like Figure 5 As shown, the indexing shaft 53 is a hollow shaft, one end of which is provided with ratchet teeth 531, the other end of which is provided with a groove 533 that cooperates with the torsion spring 52, and the middle part of which is provided with a bearing mounting position.

[0051] During operation, the second handle 7 rotates around the axis of the indexing shaft 53, pulling the pull rod 3 through the lever action, driving the movable clamp 13 to move, so that the movable clamp 13 and the fixed clamp 17 are closed to clamp and fix the cable.

[0052] The locking device is used to lock the closing action of the movable clamp 13 and the fixed clamp 17. The locking rod in the locking device extends into the middle of the ratchet teeth 531. When the second handle 7 rotates around the axis of the indexing shaft 53, it drives the indexing shaft 53 to rotate, preventing the reset movement trend brought by the torsion spring 52, thereby achieving locking; when the locking rod in the locking device moves out from the middle of the ratchet teeth 531, the locking state is released.

[0053] The specific structure of the locking device is prior art and will not be described in detail in this embodiment. The specific technical principles can be referred to the prior art CN202020902408.9. Based on the prior art, this embodiment changes the limiting structure of the torsion spring 52 and the structure of the indexing shaft 53, thereby improving the clamping stability of the clamp. Specifically:

[0054] In traditional locking rods, a flat-plate-shaped part is generally used to limit the torsion spring, and the flat-plate-shaped part is fixed to the second handle by screws. During use, the swing of the torsion spring will cause the screws of the flat-plate-shaped part to loosen, thereby losing the limiting function, resulting in unstable clamping action of the clamp. In this embodiment, the space between the inner side of the flange 51 and the second handle 7 accommodates the torsion spring 52, and the two sides of the torsion spring 52 are respectively limited by the inner side of the flange 51 and the second handle 7, which can avoid the swing problem of the torsion spring 52, thereby improving the clamping stability of the clamp.

[0055] The flange 51 in this embodiment refers to a part protruding from the surface of the second handle. The protruding part includes a limit piece with an L-shaped cross-section. The opening formed after the L-shaped limit piece is connected to the second handle is used to accommodate the torsion spring 52. The torsion spring 52 moves in the space formed by the opening. When the torsion spring 52 swings, it is blocked by the limit piece, thereby avoiding the tendency to swing.

[0056] In conventional locking rods, the indexing shaft is typically designed as a split-piece design, where the torsion spring mounting position, bearing mounting position, and ratchet teeth are assembled from multiple separate parts. This approach, in order to ensure coaxiality during machining and assembly, places high demands on the precision of the mating surfaces of the various parts during assembly, which can easily lead to loosening during use. However, the indexing shaft 53 of this embodiment integrates the transmission shaft and indexing teeth into an integrated design. Specifically, a groove 533 for mounting the torsion spring 52 is machined into a hollow indexing shaft 53, which is used to mate with the ratchet teeth 531 of the locking device, and a bearing mounting position 532 for supporting the rotational movement. This avoids the problems of conventional split-piece designs, such as difficulty in ensuring coaxiality, high precision requirements for mating surfaces, and easy loosening during use.

[0057] The insulating locking rod of the above structure improves the structure of the jaws and adds a structure to guide the cable into the clamp without changing the clamping space of the jaws, which helps the staff to clamp the cable quickly. By improving the structure of the flange and the dividing shaft in the operating part, the stability of the torsion spring during action is improved, and the reliability of the clamp action is indirectly improved. It can adapt to the high-voltage and static electricity environment on site, and improve the work efficiency of on-site operators while ensuring the safety of the operators.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An insulating lock rod for live working, characterized in that: It includes a main rod and a pull rod, wherein the main rod is provided with a clamp at the head end and a first handle at the tail end, the clamp is connected to the head end of the pull rod, and the tail end of the pull rod is provided with an operating part, which is located on the main rod; The clamp comprises a fixed clamp and a movable clamp which are hinged to each other. The tops of the movable clamp and the fixed clamp are both provided with guiding ends for guiding the clamped wires into the clamp.

2. The live working insulating lock rod according to claim 1, characterized in that: When the movable clamp and the fixed clamp are opened, the guide end causes the formed jaw structure to show a tendency of opening to expand.

3. The live working insulating lock rod according to claim 1, characterized in that: The inner side of the jaw area of the movable clamp is provided with a transverse pattern.

4. The live working insulating lock rod according to claim 3, characterized in that: The transverse pattern is serrated.

5. The live working insulating lock rod according to claim 1, characterized in that: The inner side of the jaw area of the fixed clamp is provided with a vertical pattern.

6. The live working insulating lock rod according to claim 1, characterized in that: The operating part includes a locking device connected to the main rod and a second handle movably connected to the tail end of the pull rod. The second handle is provided with a flange. The locking device has a dividing shaft. The dividing shaft is connected to one end of a torsion spring connected to the handle. The space between the inner side of the flange and the second handle accommodates the torsion spring.

7. The live working insulating lock rod according to claim 6, characterized in that: The indexing shaft is a hollow shaft, one end of which is provided with ratchet teeth, the other end of which is provided with a groove that matches the torsion spring, and the middle part of which is provided with a bearing installation position.

8. The live working insulating lock rod according to claim 1, characterized in that: The root of the fixed clamp is fixed to the end of the main rod, and the root of the movable clamp is movably connected to the end of the pull rod. A rotating shaft is provided on the fixed clamp. The root of the movable clamp is pulled by the pull rod, causing the top end to rotate around the rotating shaft, forming an opening and closing movement with the fixed clamp.

9. The live working insulating lock rod according to claim 1, characterized in that: The pull rod and the main rod are both provided with protective covers.

10. The live working insulating lock rod according to claim 1, characterized in that: The first handle is provided with anti-slip patterns.

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