Cutting device for insulated overhead cables

Abstract

The utility model belongs to cable cutting technical field discloses a kind of cutting device for insulating overhead cable, including the rack assembly for supporting the limit of insulating overhead cable, further including the cutting assembly for down pressure cutting insulating overhead cable installed on rack assembly, cutting assembly bottom two sides are provided with the auxiliary compression assembly for the fixed expansion of insulating overhead cable;Cutting assembly includes tool rest seat, and cutting tool is installed in tool rest seat bottom;Auxiliary compression assembly includes two fixed pivots of symmetrical arrangement, and fixed pivot is provided with the rolling mechanism for swinging and rolling expansion and pre-compression insulating overhead cable, and second spring is respectively installed between the both ends of two rolling mechanisms.The utility model discloses a kind of cutting device for insulating overhead cable, and rolling press roller uses first contact, and cutting is the step action of subsequent cutting, avoid cable and bounce due to sudden force, reduce security risk;Over mechanical linkage design integrates cutting, compression, reset function integrally, improves efficiency and security.

Description

Technical Field

[0001] This utility model belongs to the field of cable cutting technology, and in particular relates to a cutting device for insulated overhead cables. Background Technology

[0002] Insulated overhead cables are a type of conductor widely used in power transmission and distribution systems. Their core characteristic lies in the multi-layered insulation material surrounding the conductor, retaining the advantages of overhead lines while significantly improving safety performance. Insulated overhead cables typically consist of a conductive core, an insulation layer, an optional shielding layer, and an outer sheath. The conductive core is often made of aluminum or aluminum alloy to balance conductivity and mechanical strength; the insulation layer commonly uses cross-linked polyethylene (XLPE) or polyvinyl chloride (PVC), the former offering excellent high-temperature resistance and aging resistance, while the latter is less expensive; some medium- and high-voltage cables may include a metal shielding layer to ensure uniform electric field distribution; the outer sheath provides protection against ultraviolet radiation and corrosion. With advancements in materials technology, new products such as lightweight composite core insulated cables are gradually expanding their applications in special terrains and long-span scenarios. To achieve these applications, proper cutting of the insulated overhead cable is necessary.

[0003] Compared with Chinese Patent No. CN218192301U, which discloses a cable cutting device, this utility model provides a cable cutting device, including a first base, a second base, a fixing device, and a clamp. The first base has a flip-up cutting rod on its top, and both bases have fixing devices on their tops. The two fixing devices fix the two ends of the cable at the cut point. After the cable is cut by flipping the cutting rod, the two bases are pulled apart to straighten the cable and relieve the tension before removing the two ends of the cut cable. This prevents the unfixed end of the cable from springing up and causing a safety accident to the human body after being cut while the cable is straight.

[0004] However, the aforementioned patent requires the cable to be fixed by twisting and clamping before applying force to cut it. It is best to loosen and replace the cable, which increases the labor intensity of workers and the time spent on auxiliary disassembly and assembly. This is time-consuming and laborious, and seriously affects the speed of cable cutting operations. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a cutting device for insulated overhead cables to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cutting device for insulated overhead cables includes a frame assembly for supporting and limiting the insulated overhead cable, and a cutting component mounted on the frame assembly for pressing down and cutting the insulated overhead cable. Auxiliary clamping components for spring-loaded and stretched insulated overhead cables are provided on both sides of the bottom of the cutting component. The frame assembly includes a base, on which a limit block is mounted. An overtravel groove is provided in the middle of the limit block, and a cantilever frame is provided behind the base. The cutting component includes a blade holder, on which a cutting blade is mounted at the bottom, and a force-applying mechanism for pressing down and resetting is provided on the top surface of the blade holder. The auxiliary clamping components include two symmetrically arranged fixed rotating shafts, on which a rolling mechanism for swinging, rolling, stretching, and pre-pressing the insulated overhead cable is provided. Second springs are respectively installed between the two ends of the two rolling mechanisms.

[0008] Furthermore, the top surface of the limiting block is provided with a limiting groove, which is arc-shaped.

[0009] Furthermore, four anti-slip pads are evenly distributed at the four corners of the bottom of the base, and the anti-slip pads and the limiting blocks are respectively bolted to the base.

[0010] Furthermore: the force application mechanism includes two limiting slide rods symmetrically arranged on the tool holder seat, a first spring is provided on the outer periphery of the limiting slide rods, and a force application frame is installed between the top ends of the limiting slide rods, the top surface of the force application frame being arc-shaped.

[0011] Furthermore, the tool holder has four hinge seats evenly distributed at its four corners, the fixed rotating shaft is parallel to the cutting tool, and is rotatably mounted between two of the hinge seats.

[0012] Furthermore: the rolling mechanism includes two symmetrically mounted swing arms on the fixed rotating shaft, a central rotating shaft is installed between the bottoms of the swing arms, and a rolling roller is rotatably mounted on the central rotating shaft, the rolling roller being drum-shaped.

[0013] Furthermore, each of the swing arms is provided with a spring seat on its outer side, and the second spring is fixedly installed between the two corresponding spring seats.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] 1. The roller adopts a step-by-step action of contacting first and then cutting, which avoids the cable from bouncing due to sudden force and reduces safety hazards; the mechanical linkage design integrates the cutting, pressing and resetting functions into one, which improves the operating efficiency and safety while ensuring the cutting quality, and is especially suitable for the rapid cutting needs in the construction of overhead cables.

[0016] 2. The waist-shaped roller of the auxiliary pressing component rolls the cable in both directions before cutting. By stretching to both sides, it eliminates internal stress and avoids cable twisting or local deformation. At the same time, the preload of the second spring ensures uniform pressing force. The arc-shaped groove of the limiting block matches the outer diameter of the cable to achieve natural fit and limit, preventing the cable from rolling or shifting during cutting.

[0017] 3. The design of the cutting blade and the limit block overtravel groove ensures that the blade can completely penetrate the cable when it is pressed down, avoiding the presence of uncut parts and improving the thoroughness of the cut; the cutting component integrates a spring return function (first spring), which automatically resets after operation, reducing manual intervention and improving the efficiency of continuous operation.

[0018] 4. The arc-shaped design at the top of the force-applying frame is ergonomic and facilitates manual pressing operation; the spring return system (the first spring cooperates with the cantilever frame) automatically rebounds, reducing operator fatigue; the rolling mechanism achieves rotation buffering through the central rotating shaft, reducing mechanical wear and extending service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the cutting device for insulated overhead cables described in this utility model;

[0020] Figure 2 This is a schematic diagram of the frame assembly of the cutting device for insulated overhead cables described in this utility model;

[0021] Figure 3 This is a top axonometric view of the cutting component of the cutting device for an insulated overhead cable described in this utility model;

[0022] Figure 4 This is a bottom-view isometric view of the cutting component of the cutting device for cutting insulated overhead cables described in this utility model;

[0023] Figure 5 This is a schematic diagram of the auxiliary clamping component of the cutting device for insulated overhead cables described in this utility model;

[0024] Figure 6 This is a perspective view of the auxiliary clamping component of the cutting device for insulated overhead cables described in this utility model.

[0025] In the attached diagram, the following are the reference numerals: 101, base; 102, anti-slip pad; 103, cantilever frame; 104, limiting block; 105, limiting groove; 106, overtravel groove; 201, tool holder seat; 202, hinge seat; 203, cutting tool; 204, limiting slide bar; 205, first spring; 206, force application frame; 301, fixed rotating shaft; 302, swing arm; 303, central rotating shaft; 304, rolling roller; 305, spring seat; 306, second spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6 A cutting device for insulated overhead cables includes a frame assembly for supporting and limiting the insulated overhead cable, and a cutting component installed on the frame assembly for pressing down and cutting the insulated overhead cable. The bottom sides of the cutting component are provided with auxiliary clamping components for spring-loaded and stretched insulated overhead cables for fixing.

[0028] In this embodiment: the frame assembly includes a base 101, a limiting block 104 is installed on the base 101, the limiting block 104 is provided with an overtravel groove 106 in the middle, and a cantilever 103 is provided at the rear of the base 101; the top surface of the limiting block 104 is provided with a limiting groove 105, which is arc-shaped; four anti-slip pads 102 are evenly distributed at the four corners of the bottom of the base 101, and the anti-slip pads 102 and the limiting block 104 are respectively bolted to the base 101; the base 101 is fixed by the anti-slip pads 102, and the insulated overhead cable is laid flat from the front into the limiting groove 105 of the upper limiting block 104 of the base 101; the cantilever 103 supports the limiting slide rod 204 to move up and down, and at the same time supports the first spring 205 to release the elastic force; the overtravel groove 106 ensures that the cutting tool 203 is inserted to completely cut the insulated overhead cable;

[0029] In this embodiment: the cutting assembly includes a blade holder 201, a cutting blade 203 is mounted on the bottom of the blade holder 201, and a force-applying mechanism for applying downward force and resetting is provided on the top surface of the blade holder 201; the force-applying mechanism includes two symmetrically arranged limiting slide rods 204 on the blade holder 201, a first spring 205 is provided on the outer periphery of the limiting slide rods 204, and a force-applying frame 206 is installed between the top ends of the limiting slide rods 204, the top surface of the force-applying frame 206 being arc-shaped; four hinge seats 202 are evenly distributed at the four corners of the blade holder 201, the fixed rotating shaft 301 is parallel to the cutting blade 203, and is rotatably mounted on two of them. Between the hinge seats 202; the downward force-applying frame 206 compresses the first spring 205, and pushes the force-applying frame 206 to drive the cutting tool 203 to descend through the limiting slide rod 204, so that the cutting tool 203 presses down to cut the insulated overhead cable and passes through the overtravel groove 106 in the middle of the limiting block 104 to ensure the thorough cutting of the insulated overhead cable. The force-applying frame 206 is released, the cantilever frame 103 supports the first spring 205 to release the elastic force, and pushes the force-applying frame 206 to drive the knife holder seat 201 to reset through the limiting slide rod 204. The hinge seat 202 is used to drive the swing arm 302 to move down through the fixed rotating shaft 301.

[0030] In this embodiment: the auxiliary pressing assembly includes two symmetrically arranged fixed rotating shafts 301. Each fixed rotating shaft 301 is equipped with a rolling mechanism for swinging and rolling to stretch and pre-press the insulated overhead cable. A second spring 306 is installed between the two ends of each rolling mechanism. The rolling mechanism includes two symmetrically arranged swing arms 302 on the fixed rotating shafts 301. A central rotating shaft 303 is installed between the bottoms of the swing arms 302. A rolling roller 304, which is drum-shaped, is rotatably mounted on the central rotating shaft 303. A spring seat 305 is provided on the outer side of each swing arm 302, and the second spring 306 is fixedly installed on the corresponding two spring seats 305. During the downward press, the force-applying frame 206 pushes the fixed rotating shaft 301 through the hinge seat 202, causing the swing arm 302 to press down. Under the support of the central rotating shaft 303, the rolling roller 304 first contacts the cutting tool 203 with the insulated overhead cable. Under the support of the central rotating shaft 303 and the swing arm 302, the two rolling rollers 304 extend along the limit block 104 to both sides of the insulated overhead cable with the fixed rotating shaft 301 as the center. At the same time, the second spring 306 is stretched through the spring seat 305. When released, the second spring 306 pulls the swing arm 302 in reverse with the fixed rotating shaft 301 as the center, so that the two rolling rollers 304 move closer to each other and reset.

[0031] Working principle: The base 101 is fixed by the anti-slip pad 102. First, the insulated overhead cable is laid flat from the front and enters the limiting groove 105 of the upper limit block 104 of the base 101. Then, the force applying frame 206 is pressed down to compress the first spring 205. The limiting slide rod 204 pushes the force applying frame 206 to drive the cutting tool 203 to descend. At the same time, the force applying frame 206 pushes the fixed rotating shaft 301 through the hinge seat 202 to drive the swing arm 302 to press down. Under the support of the central rotating shaft 303, the rolling roller 304 first contacts the insulated overhead cable with the cutting tool 203. And the two rolling rollers 304, under the support of the central rotating shaft 303 and the swing arm 302, move... Centered on the fixed rotating shaft 301, the insulated overhead cable is rolled out to both sides along the limiting block 104. At the same time, the second spring 306 is stretched through the spring seat 305. Then, the cutting tool 203 presses down to cut the insulated overhead cable and passes through the overtravel groove 106 in the middle of the limiting block 104 to ensure the thorough cutting of the insulated overhead cable. Finally, the force-applying frame 206 is released, and the cantilever frame 103 supports the first spring 205 to release its elastic force, pushing the force-applying frame 206 to drive the tool holder 201 to reset through the limiting slide rod 204. At the same time, the second spring 306 pulls the swing arm 302 to reverse around the fixed rotating shaft 301, so that the two rolling rollers 304 move closer to each other and reset.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for insulated overhead cables, comprising a frame assembly for supporting and limiting the insulated overhead cable, characterized in that: It also includes a cutting assembly installed on the frame assembly for pressing down and cutting insulated overhead cables, and auxiliary clamping assemblies for spring-loaded and stretched insulated overhead cables are provided on both sides of the bottom of the cutting assembly. The frame assembly includes a base (101), a limit block (104) is installed on the base (101), an overtravel groove (106) is provided in the middle of the limit block (104), and a cantilever (103) is provided behind the base (101). The cutting assembly includes a blade holder (201), a cutting blade (203) is mounted on the bottom of the blade holder (201), and a force application mechanism for pressing down and resetting is provided on the top surface of the blade holder (201). The auxiliary pressing assembly includes two symmetrically arranged fixed rotating shafts (301). The fixed rotating shafts (301) are provided with rolling mechanisms for swinging, rolling, stretching, and pre-pressing the insulated overhead cable. A second spring (306) is installed between the two ends of the two rolling mechanisms.

2. The cutting device for insulated overhead cables according to claim 1, characterized in that: The top surface of the limiting block (104) is provided with a limiting groove (105), and the limiting groove (105) is arc-shaped.

3. The cutting device for insulated overhead cables according to claim 2, characterized in that: The base (101) has four anti-slip pads (102) evenly distributed at the four corners of its bottom. The anti-slip pads (102) and the limiting blocks (104) are respectively bolted to the base (101).

4. The cutting device for insulated overhead cables according to claim 1, characterized in that: The force-applying mechanism includes two symmetrically arranged limiting slide rods (204) on the tool holder (201). A first spring (205) is provided on the outer periphery of the limiting slide rods (204). A force-applying frame (206) is installed between the top ends of the limiting slide rods (204). The top surface of the force-applying frame (206) is arc-shaped.

5. A cutting device for insulated overhead cables according to claim 4, characterized in that: The tool holder (201) has four hinge seats (202) evenly distributed at its four corners. The fixed rotating shaft (301) is parallel to the cutting tool (203) and is rotatably mounted between two of the hinge seats (202).

6. A cutting device for insulated overhead cables according to claim 1, characterized in that: The rolling mechanism includes two swing arms (302) symmetrically mounted on the fixed rotating shaft (301), a central rotating shaft (303) is installed between the bottoms of the swing arms (302), and a rolling roller (304) is rotatably mounted on the central rotating shaft (303). The rolling roller (304) is in the shape of a waist drum.

7. A cutting device for insulated overhead cables according to claim 6, characterized in that: Each of the swing arms (302) is provided with a spring seat (305) on its outer side, and the second spring (306) is fixedly installed between the two corresponding spring seats (305).

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