Aerial line cable cutter

Abstract

The utility model discloses an overhead line cable cutter, which comprises a telescopic mechanism, a cutter assembly and a clamping assembly, and is characterized in that the telescopic mechanism is provided with a fixed end and a movable end and is used for driving the movable end to telescopically move by taking the fixed end as a reference; the cutter assembly comprises two cutter bodies which are crossed and hinged, the tail ends of the cutter bodies extend to form connecting rods, and the two connecting rods are hinged to the fixed end and the movable end respectively; the clamping assembly is arranged on one side of the cutter assembly, is coaxial with the cutting axes of the two cutter bodies, and is used for clamping an overhead line cable. According to the overhead line cable cutter provided by the utility model, the clamping assembly is coaxially arranged on the cutting axis of the cutter assembly, and the cable is synchronously clamped during cutting, so that a broken end of the cable is positioned and supported after being cut off, the cable is prevented from drooping or swinging, and the safety during cutting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power cable cutting, and particularly relates to an overhead line cable cutter. Background Art

[0002] A cable cutter is a tool for cutting cables. At present, there are various cable cutters on the market, generally hydraulic cutters or electric cutters. For example, Chinese Patent No. 201520175710.8 discloses a cable cutter for cutting cables, which includes a mounting frame, a driving oil cylinder connected to the mounting frame, and a fixed blade and a movable blade provided on the mounting frame.

[0003] For the above-mentioned existing technologies, most of the electric cable cutters on the market only have the function of cutting cables. However, overhead lines usually bear their own weight and the loads brought by the external environment (such as wind, ice and snow, etc.). After the unfixed cable is cut, it may suddenly sag or swing due to its own weight, which may not only cause injury to the operators, but also damage the objects below or touch other live lines. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies, and provide an overhead line cable cutter to solve the technical problem that the unfixed cable sags or swings after being cut in the prior art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an overhead line cable cutter, including:

[0007] A telescopic mechanism with a fixed end and a movable end, used to drive the telescopic movement of the movable end with the fixed end as a reference;

[0008] A cutter assembly, the cutter assembly includes two knife bodies that cross and are hinged, a connecting rod extends from the tail end of the knife body, and the two connecting rods are respectively hinged to the fixed end and the movable end; and

[0009] A clamping assembly, the clamping assembly is arranged on one side of the cutter assembly and is coaxial with the cutting axes of the two knife bodies, and is used to clamp the overhead line cable.

[0010] In some embodiments, the clamping assembly includes two cross-hinged clamping heads, and a torsion spring is arranged between the two clamping heads.

[0011] In some embodiments, an extension rod is arranged at the tail end of the clamping head, and a linkage rod extending towards the cutter assembly is arranged on one side of the extension rod, and the two linkage rods are respectively located on both sides of the two connecting rods.

[0012] In some embodiments, the telescopic mechanism includes a driving motor, a fixed cylinder, a lead screw, and a slider. The slider is threadedly connected to the lead screw, the lead screw is connected to the output shaft of the driving motor, and the fixed cylinder is sleeved outside the lead screw and fixed to the outside of the driving motor. Among them, the slider is the movable end of the telescopic mechanism, and the fixed cylinder is the fixed end of the telescopic mechanism.

[0013] In some embodiments, a guide frame parallel to the lead screw is provided on the driving motor. The guide frame is slidably connected to the slider and is used for guiding the sliding of the slider.

[0014] In some embodiments, a travel switch is provided on the guide frame and is opposite to the end face of the slider, for limiting the minimum distance between the movable end and the fixed end.

[0015] In some embodiments, a end seat is provided at the bottom of the guide frame away from the driving motor. The lead screw is rotatably connected to the end seat, for limiting the maximum distance between the movable end and the fixed end.

[0016] In some embodiments, the two tool bodies and the two clamping heads are respectively hinged through the same shaft rod. Four nuts are provided on the shaft rod. Two of the nuts respectively abut against the top and bottom of the two clamping heads, and the other two nuts respectively abut against the top and bottom of the two tool bodies.

[0017] In some embodiments, the shape of the clamping head is arc-shaped.

[0018] In some embodiments, an anti-slip layer is provided on the inner side of the clamping head.

[0019] Compared with the prior art, the overhead line cable cutter provided by the present utility model coaxially arranges a clamping component on the cutting axis of the cutter assembly. During cutting, the cable is clamped synchronously, so as to form a positioning support for the disconnected end of the cable after cutting, avoid its sagging or swinging, and improve the safety during cutting. Description of the Drawings

[0020] Figure 1 is a three-dimensional structure diagram of the overhead line cable cutter provided by the embodiment of the present utility model;

[0021] Figure 2 is another three-dimensional structure diagram of the overhead line cable cutter provided by the embodiment of the present utility model from another perspective;

[0022] Figure 3 is a top view of the overhead line cable cutter provided by the embodiment of the present utility model.

[0023] Description of the Reference Numerals:

[0024] 1. Telescopic mechanism; 11. Driving motor; 12. Fixed cylinder; 13. Screw lever; 14. Slide block; 15. Guide frame; 16. Travel switch; 17. End seat;

[0025] 2. Cutting tool assembly; 21. Tool body; 22. Connecting rod;

[0026] 3. Clamping assembly; 31. Clamping end; 32. Torsion spring; 33. Extension rod; 34. Linking rod;

[0027] 4. Shaft rod; 401. Nut. Specific embodiments

[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] In order to solve the technical problem that the cable sags or swings after being cut without being fixed, the present utility model provides an overhead line cable cutter, which can clamp and fix the cable at the cut end to avoid the cable dropping or swinging after being cut.

[0030] It should be noted that the overhead line cable cutter described in the present utility model is used for but not limited to the cutting of overhead line cables, etc. For the convenience of description, in the present utility model, only the case where the overhead line cable cutter is applied to the cutting of overhead line cables is taken as an example for description, and the principle of the overhead line cable cutter applied to the cutting of other types of cables is essentially the same as that applied to the cutting of overhead line cables, and will not be elaborated herein one by one.

[0031] Please refer to Figure 1 , Figure 1This is a three-dimensional structure diagram of an overhead line cable cutter in an embodiment of the present invention. The overhead line cable cutter includes a telescopic mechanism 1, a cutter assembly 2, and a clamping assembly 3. The telescopic mechanism 1 has a fixed end and a movable end, and is used to drive the telescopic movement of the movable end with the fixed end as a reference; the cutter assembly 2 includes two intersecting and hinged cutter bodies 21. A connecting rod 22 extends from the tail end of the cutter body 21. The two connecting rods 22 are respectively hinged to the fixed end and the movable end. Under the telescopic drive of the telescopic mechanism 1 on the movable end, the connecting rod 22 and the cutter body 21 are driven to open and close, forming a shearing action for cutting the cable; the clamping assembly 3 is arranged on one side of the cutter assembly 2 and is coaxial with the cutting axes of the two cutter bodies 21, and is used to clamp the overhead line cable. When the cutter assembly 2 performs a shearing action on the cable, the clamping assembly 3 clamps the cable passing through the cutting axes between the two cutter bodies 21, forming the support and fixation of the cable, providing stability during cutting, and, after cutting, clamping and positioning the cable at this end to prevent it from dropping or swinging.

[0032] It can be understood that during operation, for the cable cut into two sections, one section is clamped and positioned by the clamping assembly 3, and the other section can be manually held and positioned. During cutting, no additional support tool is required, and a single person can perform the cutting operation; specifically, during cutting, one hand holds the overhead line cable cutter to perform the cutting action and clamps and positions one section of the cable with the clamping assembly 3, and the other hand can hold and position the other section of the cable, which can effectively prevent the cable from drooping or swinging after being cut, improving the safety of the cutting operation.

[0033] In one embodiment, please refer to Figure 1 , in order to facilitate clamping and detaching of the cable, the clamping assembly 3 includes two intersecting and hinged clamping heads 31. A torsion spring 32 is arranged between the two clamping heads 31. The two clamping heads 31 are elastically tightened by the torsion spring 32 to close, thereby clamping the cable between them. By pulling apart the two clamping heads 31, the cable can be detached, facilitating elastic clamping of the cable.

[0034] Furthermore, please refer to Figure 1 and Figure 3, in order to perform the clamping opening and closing of the clamping assembly 3 following the shearing opening and closing of the cutter assembly 2, an extension rod 33 is provided at the tail end of the clamping head 31. A linkage rod 34 extending towards the cutter assembly 2 is provided on one side of the extension rod 33. The two linkage rods 34 are respectively located on both sides of the two connecting rods 22. When the two cutter bodies 21 of the cutter assembly 2 open, the two connecting rods 22 rotate away from each other, thereby forming a pushing force away from each other on the two linkage rods 34, driving the extension rod 33 and the clamping head 31 to move, forming an opening action of the two clamping heads 31, opening the clamping mouth for sleeving it onto the cable. When the two cutter bodies 21 of the cutter assembly 2 close for the cutting action, the two connecting rods 22 gradually approach, and under the elastic action of the torsion spring 32 of the clamping assembly 3, the two clamping heads 31 also synchronously approach until the cable is clamped.

[0035] In this embodiment, when the cutter body 21 of the cutter assembly 2 cuts and closes, the included angle between the two connecting rods 22 is smaller than the included angle between the two extension rods 33.

[0036] In one of the embodiments, please refer to Figure 1 and Figure 3 , the telescopic mechanism 1 includes a driving motor 11, a fixed cylinder 12, a lead screw 13 and a slider 14. The slider 14 is threadedly connected to the lead screw 13. The lead screw 13 is connected to the output shaft of the driving motor 11. The fixed cylinder 12 is sleeved outside the lead screw 13 and fixed to the outside of the driving motor 11. Among them, the slider 14 is the movable end of the telescopic mechanism 1, and the fixed cylinder 12 is the fixed end of the telescopic mechanism 1, that is, the slider 14 is hinged to one connecting rod 22, and the fixed cylinder 12 is hinged to the other connecting rod 22. Under the restriction of the cutter assembly 2, the driving motor 11 drives the lead screw 13 to rotate, and the slider 14 moves telescopically along the length direction of the lead screw 13, driving the two connecting rods 22 to perform the opening and closing actions, thereby forming the opening and closing shearing actions of the two cutter bodies 21.

[0037] Furthermore, a guide frame 15 parallel to the lead screw 13 is provided on the driving motor 11. The guide frame 15 is slidably connected to the slider 14 for guiding the sliding of the slider 14 and improving the stability of the sliding of the slider 14.

[0038] Furthermore, a travel switch 16 is provided on the guide frame 15. The travel switch 16 is electrically connected to the driving motor 11 and faces the end face of the slider 14 for limiting the minimum distance between the movable end and the fixed end.

[0039] It can be understood that the model of the travel switch 16 is the travel switch of the JLXK1 series, which is used to control the stroke of the slider 14.

[0040] Further, a end seat 17 is provided at the bottom end of the guide frame 15 away from the drive motor 11. The lead screw 13 is rotatably connected to the end seat 17 for restricting the maximum distance between the movable end and the fixed end.

[0041] It can be understood that the drive motor 11 can be a remote control motor with the model DT52, which can realize remote control operation, or a traditional stepper motor, and the forward and reverse rotations can be controlled through a switch. Both are mature existing technologies and will not be elaborated here too much.

[0042] In one embodiment, please refer to Figure 2 , in order to facilitate the assembly of the cutter assembly 2 and the clamping assembly 3 and adjust the distance between the two, the two cutter bodies 21 and the two clamping heads 31 are respectively hinged through the same shaft rod 4. Through holes are provided on both the cutter body 21 and the clamping head 31, and they can be sleeved on the shaft rod 4 for assembly. Four nuts 401 are provided on the shaft rod 4. Two of the nuts 401 respectively abut against the top and bottom of the two clamping heads 31, and the other two nuts 401 respectively abut against the top and bottom of the two cutter bodies 21. By adjusting the positions of the nuts 401, the relative positions of the cutter assembly 2 and the clamping assembly 3 on the shaft rod 4 can be adjusted.

[0043] Further, the shape of the clamping head 31 is arc-shaped, which is convenient for clamping the circular cable.

[0044] Further, an anti-slip layer is provided on the inner side of the clamping head 31 to provide anti-slip performance and avoid slipping during clamping.

[0045] For a better understanding of the present invention, the technical solution of the present invention will be described in detail below in conjunction with Figures 1 to 3 : Under the telescopic drive of the telescopic mechanism 1, the two cutter bodies 21 are opened. During the opening process, the connecting rod 22 pushes against the linkage rod 34, driving the two clamping heads 31 to open. When the cutter assembly 2 is sleeved onto the cable and the cable is located at the cutting axis, the cable is also synchronously inserted between the two clamping heads 31; under the reverse drive of the telescopic mechanism 1, the two cutter bodies 21 are closed for cutting. At the same time, under the elastic action of the torsion spring 32, the clamping heads 31 are also closed to clamp and position the cable, thereby realizing clamping of the cable while cutting.

[0046] The above specific implementation manners of the present invention do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An overhead line cable cutter, characterized in that: include: A telescopic mechanism having a fixed end and a movable end, for driving the movable end to telescopically move with the fixed end as a reference; A cutter assembly, the cutter assembly comprising two crossed and hinged cutter bodies, a connecting rod extending from the tail end of the cutter body, and the two connecting rods are respectively hinged to the fixed end and the movable end; and A clamping assembly is arranged on one side of the cutter assembly and is coaxial with the cutting axes of the two cutter bodies, and is used for clamping overhead line cables.

2. The overhead line cable cutter according to claim 1, characterized in that: The clamping assembly comprises two crossed and hinged clamping ends, and a torsion spring is arranged between the two clamping ends.

3. The overhead line cable cutter according to claim 2, characterized in that: An extension rod is arranged at the tail end of the clamping end head, a linkage rod extending toward the cutter assembly is arranged on one side of the extension rod, and two linkage rods are respectively located on both sides of the two connecting rods.

4. The overhead line cable cutter according to claim 3, characterized in that: The telescopic mechanism includes a driving motor, a fixed cylinder, a wire lever and a slider, wherein the slider is threadedly connected to the wire lever, the wire lever is connected to the output shaft of the driving motor, the fixed cylinder is sleeved on the outside of the wire lever and fixed to the outside of the driving motor, wherein the slider is the movable end of the telescopic mechanism, and the fixed cylinder is the fixed end of the telescopic mechanism.

5. The overhead line cable cutter according to claim 4, characterized in that: The driving motor is provided with a guide frame parallel to the wire lever, and the guide frame is slidably connected with the slider and is used for sliding guidance of the slider.

6. The overhead line cable cutter according to claim 5, characterized in that: A travel switch is arranged on the guide frame and is opposite to the end surface of the slide block, and is used to limit the minimum distance between the movable end and the fixed end.

7. The overhead line cable cutter according to claim 6, characterized in that: An end seat is arranged at the bottom end of the guide frame away from the driving motor, and the wire lever is rotatably connected to the end seat to limit the maximum distance between the movable end and the fixed end.

8. The overhead line cable cutter according to claim 7, characterized in that: The two blades and the two clamping ends are hinged correspondingly through the same shaft rod, and four nuts are arranged on the shaft rod, two of which are respectively abutted against the top and bottom of the two clamping ends, and the other two nuts are respectively abutted against the top and bottom of the two blades.

9. The overhead line cable cutter according to claim 8, characterized in that: The clamp end is in the shape of an arc.

10. The overhead line cable cutter according to claim 9, characterized in that: The inner side of the clamp end is provided with an anti-slip layer.

Images