Cable cutting device

Abstract

The invention discloses a cable cutting device which comprises a cable assembly and a fixing assembly, the cable assembly comprises a cable core, a cable inner sheath, a cable armor layer and a cable from inside to outside, the cable assembly is arranged in a layer-by-layer wrapping mode, the fixing assembly comprises a fixing support, the fixing support limits the cable assembly, and the fixing support is used for fixing the cable assembly. Two sets of limiting pieces and a cutting assembly are arranged on the annular surface of the fixed support in a penetrating mode, the cutting assembly is arranged at the end, away from the limiting pieces, of the cutting assembly and matched with the fixed support, and the cutting assembly comprises a rotating wheel disc which is connected with the fixed support through a bearing. The device has the beneficial effects that manpower is greatly saved, the labor intensity of operators is relieved, the transverse sawing time is greatly shortened, a saw bite is smooth, and the service life of a cable is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of cable cutting, in particular to a cable cutting device. Background Art

[0002] At present, medium-voltage overhead lines in power networks are laid with power cables to transmit electric energy in special areas, special places, and communities. However, due to the special cable body and use environment, the cable armor layer is two spiral metal coils that are coiled around the entire cable. When making cable accessories, the cable armor layer is cut using a saw bow for horizontal sawing to remove the cable armor layer. It is difficult to control the depth of the saw teeth when using a saw bow for horizontal sawing. If the saw is too shallow, the steel plate is difficult to remove, and if the saw is too deep, the inner sheath of the cable is easily damaged. In addition, the cut surface is uneven, jagged or wavy, and has spikes that affect the service life of the cable. In order to better remove the cable armor layer when making cable accessories (cable terminal heads or intermediate heads), experienced personnel have to perform horizontal sawing. However, since the cable armor layer is spiral and consists of two pieces wrapped around the inner sheath surface, it is relatively easy to operate the saw bow when sawing directly above and on the left and right sides, but when sawing to the bottom, it is necessary to use the opposite direction for horizontal sawing. The personnel need to bend down and squat or half squat, rotate the upper body 180 degrees, and use the saw bow in the opposite direction facing the sky to perform horizontal sawing on the cable armor layer at the bottom of the cable. Due to the personnel's posture, it is extremely difficult to use the saw bow, resulting in uneven sawing force and easy sawing. Since the cable is cylindrical, the cable armor layer is circular and spiral, and the saw blade of the saw bow is straight, it is difficult to control the depth and curvature of the horizontal saw when sawing the cable armor layer. If you are not careful, you may saw through the cable armor layer and damage the inner sheath of the cable, affecting the service life of the cable. In addition, the cable armor layer is accompanied by flying debris and spikes when it is sawed horizontally, which can easily cause harm to the human body (eyes or hands).

[0003] Using a saw bow to saw the cable armor layer horizontally not only consumes a lot of manpower, but also increases the difficulty of sawing horizontally when encountering a narrow space. Due to the influence of working conditions, environment and basis, the workers are faced with great work intensity, and several hours of work make the workers' physical strength reach the extreme. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above-mentioned prior art problems, the present invention is proposed.

[0006] The present invention aims to provide a cable cutting device, which aims to solve the problem that using a saw bow to cut a cable armor layer is not only labor-intensive and dangerous, but also more difficult to cut in a narrow space. Due to the influence of working conditions and environment, it brings great work intensity to the operator.

[0007] In order to solve the above-mentioned problem that using a saw bow to saw the cable armor layer horizontally not only consumes a lot of manpower but is also dangerous, and encountering a narrow space will increase the difficulty of sawing horizontally. Due to the influence of working conditions and environment and basis, it brings great working intensity to the operators. The present invention provides the following technical solutions: a cable cutting device, which includes a cable assembly, the cable assembly includes a cable core, a cable inner sheath, a cable armor layer and a cable from the inside to the outside, the cable assembly is wrapped in layers, a fixing assembly, the fixing assembly includes a fixing bracket, the fixing bracket limits the cable assembly, and the fixing bracket has two groups of limiting members through the annular surface, and a cutting assembly, the cutting assembly is arranged at the end away from the limiting member and cooperates with the fixing bracket, and includes a rotating wheel, and the rotating wheel and the fixing bracket are connected by a bearing.

[0008] As a preferred solution of the cable cutting device of the present invention, two groups of limit members are symmetrically arranged at both ends of the cable, and the limit members include a clamp lifting handle, a first rotating handle and a fixed clamp, and the inner annular surfaces of the two groups of fixed clamps fix the cable.

[0009] As a preferred solution of the cable cutting device of the present invention, a spring is arranged on the clamp lifting handle, the spring is limited between the fixed bracket and the fixed clamp, and a fastening bolt is arranged on the first rotating handle to connect with the fixed clamp.

[0010] As a preferred solution of the cable cutting device of the present invention, wherein: an adjusting cross bar and a second rotating handle are respectively extended on both sides of the rotating wheel, and a cutting component is movably provided on the surface of the adjusting cross bar.

[0011] As a preferred solution of the cable cutting device of the present invention, wherein: a thread groove and a limit groove are provided on the adjusting cross bar, a rotating handle is provided on the second rotating handle, and a bearing is provided on the inner ring surface of the rotating handle.

[0012] As a preferred solution of the cable cutting device of the present invention, wherein: a rotating handle is provided on the second rotating handle, and a bearing is provided on the inner ring surface of the rotating handle.

[0013] As a preferred solution of the cable cutting device of the present invention, the cutting component includes a limit nut, an inner adjustment handle, an outer adjustment handle and a saw frame from the inside to the outside on the adjustment cross bar.

[0014] As a preferred solution of the cable cutting device of the present invention, the inner adjustment handle is connected to the cable mating end and is provided with two sets of lifting ears, the inner adjustment handle is limited by a limiting groove, and the outer adjustment handle is displaced through a threaded groove.

[0015] As a preferred solution of the cable cutting device of the present invention, the saw frame includes a saw frame lifting handle sliding in two sets of lifting ears.

[0016] As a preferred solution of the cable cutting device of the present invention, a spring is connected between the saw frame lifting handle and the inner adjustment handle, a saw blade fixing frame is provided to connect the saw frame and the cable mating end, and an arc-shaped saw blade is provided between the saw blade fixing frames.

[0017] The cable cutting device of the present invention has the following beneficial effects: the cable armor layer cross-cutting tool is improved during the production of cable accessories, which not only saves time and effort during the cable armor layer cutting process, but is also convenient and quick, improves the cross-cutting level of the cable armor layer, and greatly increases the service life of the cable. The entire device is made of conventional lightweight materials with good mechanical properties, and the traditional cross-cutting method of the cable armor layer with a full squat, half squat or bent waist is changed to a rotary circular arc saw blade, which greatly improves the comfort of the operators and reduces the risk of injury to the operators. In addition, the cross-cutting of the cable armor layer is improved, which not only makes the fracture of the cable armor layer flat and smooth, but also greatly saves manpower and time, and the process is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is an overall side view of the present invention.

[0021] Figure 3 This is a schematic diagram of the disassembly of the cable assembly in the present invention.

[0022] Figure 4 It is a schematic diagram of the overall disassembly of the present invention.

[0023] Figure 5 It is a detailed schematic diagram of the cutting assembly in the present invention. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Example 1

[0028] Reference Figures 1 to 5 , which is the first embodiment of the present invention, and this embodiment provides a cable cutting device, including a cable assembly 100 including a cable core 101, a cable inner sheath 102, a cable armor layer 103 and a cable 104 from the inside out, the cable assembly is wrapped layer by layer, a fixing assembly 200, the fixing assembly 200 includes a fixing bracket 201, the fixing bracket 201 limits the cable assembly 100, and two groups of limiting members 202 are opened through the annular surface of the fixing bracket 201.

[0029] Furthermore, two groups of limit members 202 are symmetrically arranged at both ends of the cable 104, and the limit members 202 include a clamp lifting handle 202a, a first rotating handle 202b and a fixed clamp 202c. The inner annular surfaces of the two groups of fixed clamps 202c fix the cable 104. A spring T is arranged on the clamp lifting handle 202a, and the spring T is limited between the fixed bracket 201 and the fixed clamp 202c. A fastening bolt 202b-1 is arranged on the first rotating handle 202b and connected to the fixed clamp 202c.

[0030] The whole set of the device is composed of a fixed bracket 201, a fixed clamping plate 202c, a rotating wheel 301, a saw frame 304d and the like.

[0031] In summary, a stainless steel hollow cylinder with an outer diameter of 110 mm, an inner diameter of 100 mm, and a length of 40 mm is used, and the two symmetrical ends of the cylinder are extended by 80 mm and 20 mm in width to form a fixed bracket 201; The hole is used as a limit hole for the clamp lifting handle 202a (the hole is smooth, which is convenient for lifting the fixed clamp 202c upward through the clamp lifting handle 202a), and then two holes are opened at 60mm from the port. The hole is used as a fastening bolt hole (internal thread, which is convenient for fastening and fixing the clamping plate 202c).

[0032] Then, two semicircular stainless steel panels with a length of 60 mm, a thickness of 10 mm, and a R of 20 mm are respectively taken as fixing clamps 202c for fixing on the cable, and two panels with a length of 60 mm, a thickness of 10 mm, and a R of 20 mm are respectively welded at 20 mm of the fixing clamps 202c. The cylinder has a T-shaped top as a clamp lifting handle 202a, and a spring T is installed between the lifting handle and the fixed bracket 201 (the elastic force and contraction force of the two springs T must be consistent, otherwise the circular force will be offset; the compression stroke of the spring T is used to fix the fixed bracket 201 on the cable in the center position to avoid the deviation of the center of the fixed bracket 201 when the fastening bolts are tightened to tighten the fixed clamp 202c, resulting in uneven cross-cutting depth caused by the deviation of the center of the circle when the bracket rotates 360 degrees). Circular positioning grooves are processed at the corresponding positions of the fixing clamp 202c and the fixing bracket 201 fastening bolt holes, respectively. The bolt has a T-shaped first rotating handle 202b at the top and a conical bottom, which respectively cooperate with the positioning grooves of the fixed clamping plate 202c to serve as a tightening bolt (when the free travel of the spring T pushes the fixed clamping plate 202c to clamp the cable, the first rotating handle 202b of the fixing bolt is twisted to firmly fix the cable on the fixed bracket 201).

[0033] Example 2

[0034] Reference Figures 1 to 5 , which is the second embodiment of the present invention, and is different from the previous embodiment in that it also includes

[0035] An adjusting cross bar 302 and a second rotating handle 303 are respectively extended on both sides of the rotating wheel 301. A cutting component is movably provided on the surface of the adjusting cross bar 302. A threaded groove 302a and a limiting groove 302b are opened on the adjusting cross bar 302. A rotating handle 303a is provided on the second rotating handle 303, and a bearing is provided on the inner ring surface of the rotating handle 303a.

[0036] Furthermore, a rotating handle 303a is provided on the second rotating handle 303, and a bearing is provided on the inner ring surface of the rotating handle 303a. The cutting component 304 includes a limit nut 304a, an inner adjusting handle 304c, an outer adjusting handle 304c and a saw frame 304d from the inside to the outside on the adjusting cross bar 302.

[0037] In summary, a cylinder with a diameter of 120 mm is inserted into the outer periphery of the cylinder of the fixed bracket 201, and the cylinder and the fixed bracket 201 cylinder are connected with a rotating wheel 301 with a bearing (the transition connection of the bearing can ensure flexible rotation), and a 80 mm long, 20 mm long, connecting one end of the rotating wheel 301 to the wheel 20 mm away. The full-thread cylinder serves as the adjusting cross bar 302, and the adjusting cross bar 302 has symmetrical strip grooves of 60mm in length, 2mm in width and 2mm in depth as the limiting grooves 302b; the adjusting cross bar 302 is equipped with a matching limiting nut 304a, an inner adjusting handle 304c and an adjusting dial, and the limiting nut 304a and the adjusting dial are respectively equipped with a second rotating handle 303 for adjusting and locking the inner adjusting handle 304c, and the two sides of the inner adjusting handle 304c are respectively equipped with convex drums that match the limiting grooves 302b of the adjusting cross bar 302, and the inner circle is smooth and matches the outer circle of the adjusting handle 304c, which serves as the forward and backward movement of the entire saw frame 304d; a 110mm long, The smooth cylinder serves as the second rotating handle 303, on which a rotating handle 303a is mounted, and bearings are mounted at both ends of the rotating handle 303a (when the rotating handle 303a is held, the rotating wheel 301 is driven by the rolling of the bearings, so that the second rotating handle 303 will not cause excessive friction and damage the palm when rotating).

[0038] Example 3

[0039] Reference Figures 1 to 5 , which is the third embodiment of the present invention, further provides a cable cutting device. It includes an inner adjustment handle 304c connected to the mating end of the cable 104 and provided with two sets of lifting ears 304b-1, the inner adjustment handle 304c is limited by the limiting groove 302b, the outer adjustment handle 304c is displaced through the thread groove 302a, and the saw frame 304d includes a saw frame 304d lifting handle 304d-1 sliding in the two sets of lifting ears 304b-1.

[0040] Furthermore, a spring T is connected between the lifting handle 304d-1 of the saw frame 304d and the inner adjustment handle 304c, a saw blade fixing frame 304d-2 is provided at the mating end connecting the saw frame 304d and the cable 104, and an arc-shaped saw blade 304d-3 is provided between the saw blade fixing frame 304d-2.

[0041] Specifically, two 30mm long hanging ears 304b-1 are connected directly below the inner adjustment handle 304c, and the middle of the hanging ears 304b-1 is a rectangular hole for hanging the saw frame 304d, and the two sides are extended to serve as the saw frame 304d lifting handles (used to lift the entire saw frame 304d up), and the saw frame 304d and the hanging ears 304b-1 are embedded (because they are embedded in each other, they will not be misaligned or separated from the inner adjustment handle 304c due to different forces during operation), and the outer periphery is wrapped with a spring T (the tension of the spring T is used to push the saw frame 304d downward, and the elastic force of the spring T must be appropriate and not too strong. If it is too strong, it may cause difficulty in rotation or even jamming of the saw; if it is too weak, the thrust is insufficient, resulting in powerlessness of the horizontal saw, The rear part of the saw frame 304d is in the shape of a door, which is 30mm high, 160mm wide, 40mm wide at both ends, 80mm clear, and a saw blade 160mm long. The two ends of the saw blade are fixed to the two ends of the door with bolts (the saw blade is fixed with bolts, which makes it easy to replace the saw blade). The middle 80mm of the saw blade is toothed and arc-shaped (the arc-shaped saw teeth match the arc of the cable armor layer 103 and can rotate 360 ​​degrees with the circular armor layer. Since the arc-shaped saw teeth match the circular armor layer, the contact area between the saw teeth and the armor layer is large, the cross-cutting depth is small, and only a very small part of the saw teeth are contacted, which increases the service life of the saw teeth, and the saw cut is smooth); the above components and various principles constitute a power cable armor layer 103 cutting saw.

[0042] Furthermore, when in use, first straighten one end of the cable to be made according to the required size, cut off the cable outer sheath according to the size required for the cable accessories to expose the cable armor layer 103, and mark the part of the cable armor layer 103 that needs to be cut; then lift the power cable armor layer 103 cutting saw plywood lifting handle 202a to the maximum so that the fixed plywood 202c is in the maximum open state and the saw frame 304d lifting handle to lift the saw frame 304d to the maximum state, and then put the power cable armor layer 103 cutting saw on the appropriate cable outer sheath, and at the same time lower the plywood lifting handle 202a, and use the free compression force of the plywood spring T to fix the two fixed plywood 202c on the cable, and turn the first rotating handle 202b of the fastening bolt respectively to fix the fixed plywood 202c tightly on the cable, so that the entire device is tightly fixed on the cable through the fixed plywood 202c; then adjust the limit nut on the cross bar 304a is rotated clockwise to a suitable position, and the outer adjustment handle 304c is rotated clockwise to make the adjustment dial fit with the inner adjustment handle 304c, and then the outer adjustment handle 304c of the adjustment dial is slowly rotated clockwise to push the inner adjustment handle 304c (because the inner adjustment handle 304c and the adjustment cross bar 302 are mutually embedded in the convex and concave grooves, the inner adjustment handle 304c will not rotate with the rotation of the adjustment dial, but will only move forward or backward). When the cable armor layer 103 is aligned with the horizontal sawing marking line, put down the saw frame 304d and lift the spring T on the handle, and use the free tension of the spring T to push the saw frame 304d to make the saw blade aligned with the cable armor layer 103; then rotate the limit nut 304a counterclockwise to fit the inner adjustment handle 304c, and apply force to the limit nut 304a counterclockwise and the adjustment dial clockwise at the same time to firmly fix the inner adjustment handle 304c between the limit nut 304a and the adjustment dial. Then hold the rotating handle 303a and rotate it 360 degrees to rotate the rotating wheel 301, driving the saw blade and the cable armor layer 103 to rub against each other to achieve the purpose of cross-cutting. Due to the tension of the spring T, a gradual progressive effect is achieved according to the horizontal sawing depth of the saw teeth.

[0043] When sawing horizontally, the depth of the horizontal sawing of the cable armor layer 103 should be observed at any time. When the appropriate depth is reached, the rotation is stopped, the device is removed, and the cable armor layer 103 can be removed using tools such as clamps.

[0044] The strip groove of the adjusting crossbar 302 should be regularly maintained and lubricated with lubricating oil to keep it lubricated at all times so that the inner adjusting handle 304c can be extended and retracted freely. When the arc-shaped saw blade 304d-3 is seriously worn, it should be replaced in time to achieve a fast cross-cutting effect.

[0045] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0046] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0047] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cable cutting device, characterized in that: The cable assembly (100) comprises a cable core (101), a cable inner sheath (102), a cable armor layer (103) and a cable (104) from the inside to the outside, and the cable assembly is arranged in layers; A fixing assembly (200), the fixing assembly (200) comprising a fixing bracket (201), the fixing bracket (201) limiting the position of the cable assembly (100), and two groups of limiting members (202) are provided through the annular surface of the fixing bracket (201); A cutting assembly (300) is arranged at an end away from the limiting member (202) and cooperates with the fixed bracket (201), and comprises a rotating wheel disc (301), wherein the rotating wheel disc (301) and the fixed bracket (201) are connected via a bearing.

2. The cable cutting device according to claim 1, characterized in that: The two groups of limit members (202) are symmetrically arranged at both ends of the cable (104), and the limit members (202) include a clamp lifting handle (202a), a first rotating handle (202b) and a fixed clamp (202c), and the inner annular surfaces of the two groups of fixed clamps (202c) fix the cable (104).

3. The cable cutting device according to claim 2, characterized in that: The clamp lifting handle (202a) is provided with a spring (T), and the spring (T) is limited between the fixed bracket (201) and the fixed clamp (202c). The first rotating handle (202b) is provided with a fastening bolt (202b-1) connected to the fixed clamp (202c).

4. The cable cutting device according to claim 1 or 3, characterized in that: The rotating wheel (301) is extended to both ends and is respectively provided with an adjusting cross bar (302) and a second rotating handle (303), and a cutting component (304) is movably provided on the surface of the adjusting cross bar (302).

5. The cable cutting device according to claim 4, characterized in that: The adjusting cross bar (302) is provided with a thread groove (302a) and a limit groove (302b), the second rotating handle (303) is provided with a rotating handle (303a), and a bearing is provided on the inner ring surface of the rotating handle (303a).

6. The cable cutting device according to claim 5, characterized in that: The second rotating handle (303) is provided with a rotating handle (303a), and the inner ring surface of the rotating handle (303a) is connected to the handle (303) via a bearing.

7. The cable cutting device according to claim 6, characterized in that: The cutting component (304) comprises, from the inside to the outside, a limiting nut (304a), an inner adjustment handle (304b), an outer adjustment handle (304c) and a saw frame (304d) on the adjustment crossbar (302).

8. The cable cutting device according to claim 7, characterized in that: The inner adjustment handle (304b) is connected to the mating end of the cable (104) and is provided with two sets of lifting ears (304b-1); The inner adjustment handle (304b) is limited by the limiting groove (302b), and the outer adjustment handle (304c) is displaced through the thread groove (302a).

9. The cable cutting device according to claim 7, characterized in that: The saw frame (304d) includes a saw frame lifting handle (304d-1) that slides within two sets of lifting ears (304b-1).

10. The cable cutting device according to claim 9, characterized in that: A spring (T) is connected between the saw frame lifting handle (304d-1) and the inner adjustment handle (304b), and a saw blade fixing frame (304d-2) is provided at the mating end connecting the saw frame (304d) and the cable (104); An arc-shaped saw blade (304d-3) is arranged between the saw blade fixing frames (304d-2).

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