High-voltage cable aluminum sheath separating device

Abstract

A high-voltage cable aluminum sheath separating device comprises a hydraulic cylinder body and an ejector rod, the output end of the hydraulic cylinder body is provided with two pipelines, the two pipelines and the input end of the ejector rod are connected and provided with a connecting assembly, the connecting assembly is used for fixing the two pipelines, and the top end of the ejector rod is provided with a fixing mechanism. The fixing mechanism is used for fixedly connecting the ejector rod and a cable, the fixing mechanism comprises a first hoop assembly and a second hoop assembly, the first hoop assembly is installed on the periphery of the output end of the ejector rod, the second hoop assembly is installed on the periphery of the cable, and an adjusting assembly is installed between the first hoop assembly and the second hoop assembly; the device is installed at one end of a cable through the second hoop, the output end of the push rod abuts against one end of a cable core, the hydraulic cylinder is started, an aluminum sheath is separated from the cable through the push rod, manpower for separating the aluminum sheath is omitted, the separating time of the aluminum sheath of the cable is shortened, the construction efficiency of the cable is improved, and a cable body cannot be cut.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a device for detaching the aluminum sheath of a high-voltage cable. Background Technology

[0002] With limited urban road space, the construction of power transmission lines has been gradually shifted to underground cable laying. Along with the increase in the number of cables being laid and installed, the requirements for cable construction techniques and safety technologies are becoming increasingly stringent. Among these, stripping the aluminum sheath is an essential step in the process of opening high-voltage cables, and it is also the immediate preceding step in heating the cable itself. Ensuring that the cable body is not damaged during the removal of the aluminum sheath plays a crucial role in guaranteeing the safe and stable operation of the cable lines and power grid in the future.

[0003] Currently, construction sites typically use methods such as unscrewing with a chain wrench, pulling out with a hand lever, or cutting in half.

[0004] The chain wrench unscrewing method involves using a chain wrench fitted onto the aluminum sheath. One or two workers work together to rotate and twist the aluminum sheath, loosening it like a screw to peel the sheath off the cable body.

[0005] The manual lever hoist pulling method involves two construction workers simultaneously using two 0.25T manual lever hoists. One end is fixed to a sturdy object, and the other end is tied to the aluminum sheath that needs to be removed. They work together at a uniform speed to pull the aluminum sheath out of the cable body.

[0006] The half-cutting method involves a worker using tools to make radial cuts to the aluminum sheath that needs to be removed, completely severing it, and then using a pry bar to pry open the aluminum sheath.

[0007] The chain wrench unscrewing method and the hand-operated hoist pulling method require one or more people to work together to strip the aluminum sheath of the cable. The operation is difficult, time-consuming and labor-intensive, with low work efficiency, high manpower consumption, and long stripping time, ranging from 5 to 10 minutes. The half-cutting method is prone to cutting too deeply, damaging the cable body, causing quality accidents, and seriously affecting the construction progress.

[0008] Furthermore, during cable manufacturing or laying, the aluminum sheath will inevitably deform to some extent due to external pressure, which increases the difficulty and reduces efficiency of stripping. For project owners, the efficiency and quality of aluminum sheath removal are even more important, as they not only affect the construction progress but also the quality of cable termination, thus impacting cable operation safety. Utility Model Content

[0009] To address the above issues and overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a high-voltage cable aluminum sheath removal device. This device effectively solves the problem that during cable manufacturing or laying, the aluminum sheath is inevitably deformed to some extent due to external pressure, which increases the difficulty of stripping and reduces efficiency. For project owners, the efficiency and quality of aluminum sheath removal are paramount, as they not only affect construction progress but also the quality of cable termination, ultimately impacting cable operational safety.

[0010] The technical solution is a high-voltage cable aluminum sheath release device, comprising a hydraulic cylinder body and a push rod. The output end of the hydraulic cylinder body is equipped with two pipes, and the two pipes are connected to the input end of the push rod with a connecting assembly, which is used to fix the two pipes.

[0011] A fixing mechanism is installed at the top of the top rod, which is used to fix the top rod to the cable.

[0012] The fixing mechanism includes a first clamp assembly and a second clamp assembly. The first clamp assembly is installed on the periphery of the top rod output end, and the second clamp assembly is installed on the periphery of the cable. An adjustment assembly is installed between the first clamp assembly and the second clamp assembly, and the adjustment assembly is used to adjust the distance between the first clamp assembly and the second clamp assembly.

[0013] Preferably, the first clamp assembly includes two first clamps, which are sleeved around the top rod. Each of the two first clamps has a first positioning hole on both sides, and a first screw is installed through the two first positioning holes. The first screw is threadedly connected to a first nut.

[0014] Preferably, the second clamp assembly includes two second clamps, which are sleeved around the periphery of the cable. Each of the two second clamps has a second positioning hole on both sides, and a second screw is installed through the two second positioning holes. The second screw is threadedly connected to a second nut.

[0015] Preferably, the inner walls of the two first clamps and the two second clamps are equipped with a protective layer, and the protective layer has anti-slip texture on the side opposite to the inner wall of the first clamp or the second clamp.

[0016] Preferably, the adjusting assembly includes two adjusting screws, which are respectively installed at the middle of the two second clamps on both sides. A fixing block is installed at the middle of one side of each of the two first clamps. An adjusting positioning hole is opened on one side of each fixing block. The two adjusting screws are respectively installed through the two adjusting positioning holes. Two adjusting nuts are threaded on one side of each of the two adjusting screws. The four adjusting nuts abut against the two sides of the two fixing blocks respectively.

[0017] Preferably, the connecting assembly includes a connecting pipe, the bottom end of which is installed on one side of the top rod. A positioning platform is provided inside the connecting pipe. A sealing ring is installed on the inner top of the connecting pipe and abuts against the top of the positioning platform. The pipe is inserted into the inside of the sealing ring. Multiple elastic clamping members are provided on the top of the connecting pipe. The inner top of the multiple elastic clamping members is provided with barbs. The multiple elastic clamping members clamp the outer periphery of the pipe. The barbs are inserted into one side of the pipe. Fastening nuts are installed on the outer threads of the multiple elastic clamping members, and the fastening nuts are threadedly engaged with the connecting pipe.

[0018] Preferably, the outer periphery of the top rod is provided with multiple gripping grooves.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This utility model is installed at one end of the cable via a second clamp, with the output end of the push rod pressing against one end of the cable core. The hydraulic cylinder is activated, causing the push rod to detach the aluminum sheath from the cable, thus eliminating the need for manual removal of the aluminum sheath, shortening the time required to detach the cable aluminum sheath, improving cable construction efficiency, and preventing damage to the cable body. Attached Figure Description

[0021] Figure 1 This is a first-view structural schematic diagram of the high-voltage cable aluminum sheath release device of this utility model.

[0022] Figure 2 This is a utility model Figure 2 A second-view structural diagram.

[0023] Figure 3 This is a schematic diagram of the top rod of this utility model.

[0024] Figure 4 This is a schematic diagram of the connecting pipe of this utility model.

[0025] Figure 5 This is a utility model Figure 4 A second-view structural diagram.

[0026] Figure 6 This is a structural schematic diagram of the fixing mechanism of this utility model.

[0027] Figure 7 This is a structural schematic diagram of the first clamp of this utility model.

[0028] Figure 8 This is a structural schematic diagram of the second clamp of this utility model.

[0029] Explanation of the labels in the diagram:

[0030] 1. Hydraulic cylinder body; 2. Top rod; 21. Grip groove; 3. Pipe; 4. First clamp; 41. First positioning hole; 42. First screw; 43. First nut; 5. Second clamp; 51. Second positioning hole; 52. Second screw; 53. Second nut; 6. Adjusting screw; 61. Fixing block; 62. Adjusting positioning hole; 63. Adjusting nut; 7. Connecting pipe; 71. Positioning platform; 72. Sealing ring; 73. Elastic clamping component; 74. Barb; 75. Fastening nut. Detailed Implementation

[0031] 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.

[0032] according to Figures 1 to 2 A high-voltage cable aluminum sheath release device includes a hydraulic cylinder body 1, a push rod 2, two pipes 3, a connecting component, and a fixing mechanism.

[0033] The main body of the hydraulic cylinder 1 is an electric hydraulic pump with a power output of ≥25Mpa. The power source of the electric hydraulic pump is electricity, which has higher work efficiency and saves more manpower, meeting the requirements of technology to reduce burden.

[0034] Depend on Figures 2 to 3 It is provided that the push rod 2 is a hydraulic push rod with a power output of ≥25Mpa; the push rod 2 is provided with multiple gripping grooves 21 on its periphery, which facilitates the auxiliary clamp to hold the push rod 2, so as to make it convenient for the staff to lift the push rod 2 by hand.

[0035] Depend on Figures 3 to 5 As shown, the hydraulic cylinder body 1 and the push rod 2 are connected together by two pipes 3. The hydraulic oil in the hydraulic cylinder body 1 enters the push rod 2 through the pipes 3 to provide power to the push rod 2.

[0036] There are two sets of connecting components. The two sets of connecting components are installed on the outer wall of the top rod 2 and fix one end of the pipe 3.

[0037] Each connecting assembly includes a connecting tube 7, a positioning platform 71, a sealing ring 72, multiple elastic clamps 73, multiple barbs 74, and a fastening nut 75.

[0038] The connecting pipe 7 is installed on the outer wall of the top rod 2 and communicates with the inside of the top rod 2. The positioning platform 71 is set inside the connecting pipe 7, and the top of the positioning platform 71 is lower than the top of the connecting pipe 7. The sealing ring 72 is snapped into the inner top of the connecting pipe 7, and the bottom of the sealing ring 72 abuts against the top of the positioning platform 71. The lower half of the sealing ring 72 is installed inside the connecting pipe 7, and the upper half of the sealing ring 72 is sleeved around the outside of the pipe 3. The sealing ring 72 prevents leakage at the connection of the pipe 3.

[0039] Multiple elastic clamping elements 73 are disposed on the top of the connecting pipe 7, and multiple barbs 74 are disposed on the inner top wall of the multiple elastic clamping elements 73 respectively. The fastening nut 75 is threadedly installed on the outer periphery of the multiple elastic clamping elements 73. The outer periphery of the connecting pipe 7 is provided with threads that cooperate with the fastening nut 75. When the fastening nut 75 is tightened, the fastening nut 75 compresses the elastic clamping elements 73. When the elastic clamping elements 73 fix the pipe 3, the barbs 74 will press against the surface of the pipe 3 to further fix the pipe 3 and prevent the pipe 3 from detaching.

[0040] When the pipe 3 is not connected, the multiple elastic clamps 73 are funnel-shaped to facilitate the insertion of the pipe 3; the fastening nut 75 is installed on the connecting pipe 7. After the pipe 3 is inserted into the sealing ring 72, the fastening nut 75 is turned. The fastening nut 75 compresses the elastic clamps 73 during rotation, so that the elastic clamps 73 are clamped around the pipe 3. At the same time, the barbs 74 press against the surface of the pipe 3.

[0041] The barb 74 has a shape similar to a fishhook.

[0042] Depend on Figures 1 to 2 As shown, the fixing mechanism is installed on the periphery of the top end of the top rod 2, and the fixing mechanism is used to fix the top rod 2 to the cable.

[0043] The fixing mechanism includes a first clamp assembly, a second clamp assembly, and an adjusting assembly. The first clamp assembly is installed on the outer periphery of the top of the top rod 2, and the second clamp assembly is installed on the outer periphery of the cable. The first clamp assembly and the second clamp assembly are connected together by the adjusting assembly, which is used to adjust the distance between the first clamp assembly and the second clamp assembly. This distance is the length from the aluminum sheath to the first clamp assembly that needs to be stripped.

[0044] Depend on Figures 6 to 8 As shown, the first clamp assembly includes two first clamps 4, a first positioning hole 41, two first screws 42 and two first nuts 43.

[0045] The first clamp 4 has an arc-shaped structure. Two first clamps 4 are clamped and fixed on the periphery of the top rod 2. The first positioning holes 41 are respectively opened on both sides of the two first clamps 4. The first positioning holes 41 are set one-to-one. Two first screws 42 are respectively inserted into the four first positioning holes 41. Two first nuts 43 are threaded onto the two first screws 42. The mutual cooperation of the first screws 42 and the first nuts 43 enables the two first clamps 4 to be installed on the periphery of the top rod 2.

[0046] The first clamp 4 conforms to the shape of the top rod 2.

[0047] The second clamp assembly includes two second clamps 5, a second positioning hole 51, a second screw 52, ​​and a second nut 53.

[0048] The second clamp 5 has an arc-shaped structure. The two second clamps 5 are clamped and fixed on the periphery of the top rod 2. The second positioning holes 51 are respectively opened on both sides of the two second clamps 5. The second positioning holes 51 are set one-to-one. The two second screws 52 are respectively inserted into the four second positioning holes 51. The two second nuts 53 are threaded onto the two second screws 52. The mutual cooperation of the second screws 52 and the second nuts 53 enables the two second clamps 5 to be installed on the periphery of the cable.

[0049] Measure the length of the aluminum sheath that needs to be peeled off, cut the aluminum sheath at this point, and fix the two second clamps 5 at the cut point.

[0050] The inner walls of the first clamp 4 and the second clamp 5 are equipped with a protective layer. The side of the protective layer opposite to the first clamp 4 and the second clamp 5 is provided with anti-slip texture. The protective layer can protect the top rod 2 and the cable surface and prevent the top rod 2 and the cable surface from being scratched during pulling. The anti-slip texture can increase the friction between the first clamp 4 and the second clamp 5 and the top rod 2 and the cable, so as to play an anti-slip role and reduce the pull-out rate.

[0051] The second clamp 5 conforms to the cylindrical shape of the cable, and its size can be changed according to different cable models.

[0052] Depend on Figures 6 to 8 The adjustment assembly includes two adjusting screws 6, two fixing blocks 61, two adjusting positioning holes 62, and four adjusting nuts 63.

[0053] Two adjusting screws 6 are respectively installed in the middle of one side of the two second clamps 5, two fixing blocks 61 are respectively set in the middle of one side of the two first clamps 4, two adjusting positioning holes 62 are respectively opened in the middle of the two fixing blocks 61, two adjusting screws 6 are respectively inserted through the two adjusting positioning holes 62, four adjusting nuts 63 are respectively threaded on the two adjusting screws 6, and the four adjusting nuts 63 abut against the two sides of the two fixing blocks 61. By turning the four adjusting nuts 63, the position of the four adjusting nuts 63 on the adjusting screws 6 is adjusted, thereby adjusting the distance between the first clamps 4 and the second clamps 5.

[0054] Adjusting screw 6 is a galvanized screw, which can withstand a tensile force of 25 MPa. The 25 MPa tensile force that the galvanized screw can withstand is not limited to this. Different materials can be changed according to the corresponding cable size. No deformation, cracks or breaks occurred in the tensile test.

[0055] Specifically, the average time for this device to peel off the aluminum sheath is 4 min 43 s < 5 min.

[0056] In use, the length of the aluminum sheath to be stripped is first measured, and then the cable surface is radially cut. The push rod 2 and the cable are fixed in a straight line. The push rod 2 is connected to the hydraulic cylinder body 1 through the pipe 3. Two first clamps 4 are fixed to the front end of the push rod 2, and two second clamps 5 are clamped at one end of the cable surface cut. The two second clamps 5 are fixed to the surface of the aluminum sheath by the second screw 52 and the second nut 53. The output end of the push rod 2 is pressed against the cable core, and the cable body is fixed. Next, two adjusting nuts 63 are installed on the two adjusting screws 6, and then the two adjusting screws 6 are inserted into the adjusting positioning hole 62. The two adjusting nuts 63 are installed on the two adjusting screws 6 again. Finally, the hydraulic cylinder body 1 is activated to provide power to the push rod 2, so that the output end of the push rod 2 extends out of the push rod 2. The push rod 2 moves, and the push rod 2 pulls the aluminum sheath away from the cable body.

[0057] The output end of the push rod 2 pushes against the cable core to detach from the aluminum sheath, and the aluminum sheath peels off the cable body.

[0058] 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 high-voltage cable aluminum sheath release device, characterized in that, It includes a hydraulic cylinder body (1) and a push rod (2). The output end of the hydraulic cylinder body (1) is equipped with two pipes (3). The two pipes (3) are connected to the input end of the push rod (2) and a connecting assembly is installed. The connecting assembly is used to fix the two pipes (3). A fixing mechanism is installed at the top of the top rod (2), which is used to fix the top rod (2) to the cable. The fixing mechanism includes a first clamp assembly and a second clamp assembly. The first clamp assembly is installed on the periphery of the output end of the top rod (2), and the second clamp assembly is installed on the periphery of the cable. An adjustment assembly is installed between the first clamp assembly and the second clamp assembly, and the adjustment assembly is used to adjust the distance between the first clamp assembly and the second clamp assembly.

2. The high-voltage cable aluminum sheath release device according to claim 1, characterized in that, `(4), the two first clamps (4) are sleeved on the periphery of the top rod (2), and the two first clamps (4) are provided with first positioning holes (41) on both sides. A first screw (42) is installed through the two first positioning holes (41), and the first screw (42) is threadedly connected to a first nut (43).

3. The high-voltage cable aluminum sheath release device according to claim 2, characterized in that, The second clamp assembly includes two second clamps (5), which are sleeved around the cable. Each of the two second clamps (5) has a second positioning hole (51) on both sides. A second screw (52) is installed through the two second positioning holes (51), and a second nut (53) is threaded onto the second screw (52).

4. The high-voltage cable aluminum sheath release device according to claim 3, characterized in that, The inner walls of the two first clamps (4) and the two second clamps (5) are all equipped with a protective layer, and the protective layer has anti-slip texture on the side opposite to the inner wall of the first clamp (4) or the second clamp (5).

5. A high-voltage cable aluminum sheath release device according to claim 4, characterized in that, The adjustment assembly includes two adjustment screws (6), which are respectively installed in the middle of the two second clamps (5) on both sides. A fixing block (61) is installed in the middle of one side of each of the two first clamps (4). An adjustment positioning hole (62) is opened on one side of the fixing block (61). The two adjustment screws (6) are respectively installed through the two adjustment positioning holes (62). Two adjustment nuts (63) are threaded on one side of each of the two adjustment screws (6). The four adjustment nuts (63) abut against the two sides of the two fixing blocks (61).

6. The high-voltage cable aluminum sheath release device according to claim 1, characterized in that, The connecting assembly includes a connecting pipe (7), the bottom end of which is installed on one side of the top rod (2). A positioning platform (71) is provided inside the connecting pipe (7). A sealing ring (72) is installed on the inner top of the connecting pipe (7) and abuts against the top of the positioning platform (71). The pipe (3) is inserted into the inside of the sealing ring (72). A plurality of elastic clamping parts (73) are provided on the top of the connecting pipe (7). A barb (74) is provided on the inner top of the plurality of elastic clamping parts (73). The plurality of elastic clamping parts (73) are clamped on the periphery of the pipe (3). The barb (74) is inserted into one side of the pipe (3). A fastening nut (75) is threaded on the periphery of the plurality of elastic clamping parts (73), and the fastening nut (75) is threadedly engaged with the connecting pipe (7).

7. A high-voltage cable aluminum sheath release device according to claim 1, characterized in that, The top rod (2) has multiple gripping grooves (21) on its periphery.

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