Novel high-voltage cable aluminum sheath separating device
The hydraulically driven high-voltage cable aluminum sheath removal device solves the problems of time-consuming and labor-intensive aluminum sheath stripping and easy cable damage in existing technologies, achieving efficient and safe aluminum sheath removal, and improving construction efficiency and cable quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU FANDIAN ELECTRIC POWER CONSTR GROUP
- Filing Date
- 2024-12-11
- Publication Date
- 2026-04-14
AI Technical Summary
Existing technologies require multiple people to work together to remove the aluminum sheath of high-voltage cables, which is time-consuming and labor-intensive, and can easily damage the cable itself, affecting the construction progress and quality.
A novel high-voltage cable aluminum sheath detachment device is adopted, comprising a hydraulic cylinder body and a double-cylinder hydraulic rod assembly. The first clamp and the second clamp are respectively installed on the cable and the aluminum sheath. The aluminum sheath is detached from the cable by hydraulically driving the push rod, avoiding manual operation.
It simplifies the aluminum sheath stripping process, improves construction efficiency, avoids damage to the cable body, shortens operation time, and ensures the safety and quality of the cable.
Smart Images
Figure CN224123795U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable technology, and in particular to a novel aluminum sheath release device for high-voltage cables. 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 novel aluminum sheath removal device for high-voltage cables. This device effectively solves the problem that during cable manufacturing or laying, the aluminum sheath is often deformed due to external pressure, increasing the difficulty and reducing efficiency of stripping. 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 new type of high-voltage cable aluminum sheath release device, including a hydraulic cylinder body and a double-cylinder hydraulic rod assembly. The output end of the hydraulic cylinder body is equipped with two T-pipes, and the two T-pipes are fixedly connected to the double-cylinder hydraulic rod assembly through a connecting component.
[0011] The bottom of the dual-cylinder hydraulic rod assembly is hinged to a first clamp assembly, which is installed around the cable; the output end of the dual-cylinder hydraulic rod assembly is hinged to a second clamp assembly, which is installed around the aluminum sheath.
[0012] Preferably, the first clamp assembly includes two first clamps, each with a first positioning plate on both sides, and a first rotating shaft between the two first positioning plates. The bottom of the double-cylinder hydraulic rod assembly is hinged to the two first rotating shafts respectively, and the two first clamps are sleeved and installed on both sides of the cable periphery. Each of the two first clamps has a first positioning hole on both sides, and two first screws are installed through the four first positioning holes. A first nut is threaded onto one side of each first screw.
[0013] Preferably, the second clamp assembly includes two second clamps, each with a second positioning plate on both sides, and a second rotating shaft between the two positioning plates. The top of the dual-cylinder hydraulic rod assembly is hinged to the two second rotating shafts respectively, and the two second clamps are sleeved and installed on both sides of the outer periphery of the aluminum sheath. Each of the two second clamps has a second positioning hole on both sides, and two second screws are installed through the four second positioning holes. A second nut is threaded onto one side of each of the second screws.
[0014] Preferably, the dual-cylinder hydraulic rod assembly includes a first push rod and a second push rod, the bottoms of the first push rod and the second push rod are respectively hinged to the periphery of two first rotating shafts, and the output ends of the tops of the first push rod and the second push rod are respectively hinged to the periphery of two second rotating shafts.
[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 connecting assembly includes four connecting pipes, the bottom ends of which are respectively installed on both sides of the top of the first and second push rods. A positioning platform is provided inside each connecting pipe, and a sealing ring is installed on the inner top of each connecting pipe, with the bottom of the sealing ring abutting against the top of the positioning platform. One end of the tee pipe is inserted into the interior of the sealing ring. Multiple elastic clamping members are provided on the top of each connecting pipe, with barbs on the inner top of each elastic clamping member. The multiple elastic clamping members clamp the periphery of the tee pipe, and the barbs abut against the outer side of the tee pipe. Fastening nuts are threaded onto the periphery of each elastic clamping member, and the fastening nuts are threaded into the connecting pipe.
[0017] Preferably, the outer periphery of the first and second push rods is provided with multiple gripping grooves.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] This utility model uses a first clamp installed at one end of the cable and a second clamp installed at one end of the aluminum sheath. When the hydraulic cylinder is activated, its first and second push rods push against the aluminum sheath to detach from the cable. This eliminates the need for manual detachment of the aluminum sheath, avoiding the problem of difficult peeling caused by deformation of the aluminum sheath due to external pressure during cable manufacturing or laying. The operation is simple, shortens the cable aluminum sheath detachment time, improves cable construction efficiency, and avoids cutting the cable body. Attached Figure Description
[0020] Figure 1 This is a first-view structural schematic diagram of the novel high-voltage cable aluminum sheath release device of this utility model.
[0021] Figure 2 This is a structural schematic diagram of the first clamp assembly and the second clamp assembly of this utility model.
[0022] Figure 3 This is a utility model Figure 2 A schematic diagram of the explosion structure.
[0023] Figure 4 This is a structural schematic diagram of the first clamp assembly of this utility model.
[0024] Figure 5 This is a structural schematic diagram of the second clamp assembly of this utility model.
[0025] Figure 6 This is a schematic diagram of the connecting pipe of this utility model.
[0026] Figure 7 This is a structural schematic diagram of the positioning platform of this utility model.
[0027] Explanation of the labels in the diagram:
[0028] 1. Hydraulic cylinder body; 2. First push rod; 21. Second push rod; 22. Grip groove; 3. T-pipe; 4. First clamp; 41. First positioning hole; 42. First screw; 43. First nut; 44. First positioning plate; 45. First rotating shaft; 5. Second clamp; 51. Second positioning hole; 52. Second screw;
[0029] 53. Second nut; 54. Second positioning plate; 55. Second rotating shaft; 6. Connecting pipe; 61. Positioning platform; 62. Sealing ring; 63. Elastic clamping element; 64. Barb; 65. Fastening nut. Detailed Implementation
[0030] 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.
[0031] Depend on Figures 1 to 2 A novel high-voltage cable aluminum sheath release device is provided, comprising a hydraulic cylinder body 1, a double-cylinder hydraulic rod assembly, two T-pipes 3, a connecting assembly, a first clamp assembly, and a second clamp assembly.
[0032] The dual-cylinder hydraulic rod assembly is connected to the output end of the hydraulic cylinder body 1 via two T-pipes 3. One end of each T-pipe 3 is connected to the output end of the hydraulic cylinder body 1, and the other end of each T-pipe 3 is connected to the dual-cylinder hydraulic rod assembly via a connecting assembly. The connecting assembly is used to fix the two T-pipes 3.
[0033] The first clamp assembly is hinged to the bottom of the double-cylinder hydraulic rod assembly and is sleeved around the cable; the second clamp assembly is hinged to the output end of the top of the double-cylinder hydraulic rod assembly and is sleeved around the aluminum sheath; the double-cylinder hydraulic rod assembly moves against the second clamp assembly, and the second clamp assembly, along with the aluminum sheath, detaches from the cable.
[0034] Depend on Figures 1 to 2 It is given that the main body 1 of the hydraulic cylinder 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, thus meeting the requirements of reducing the burden of technology.
[0035] Depend on Figures 2 to 3The dual-cylinder hydraulic rod assembly includes a first push rod 2 and a second push rod 21. The first push rod 2 and the second push rod 21 are hydraulic oil push rods, and the power output of the first push rod 2 and the second push rod 21 is ≥25Mpa. Multiple gripping grooves 22 are provided on the periphery of the first push rod 2 and the second push rod 21. The gripping grooves 22 facilitate the clamping of the first push rod 2 and the second push rod 21 by auxiliary clamps, so as to facilitate the workers to lift the first push rod 2 and the second push rod 21 by hand.
[0036] Depend on Figures 1 to 3 As shown, one end of each of the two T-pipes 3 is installed at the output end of the hydraulic cylinder body 1, and the other end of each T-pipe 3 has two interfaces. The two interfaces of one T-pipe 3 are respectively connected to the side of the first push rod 2 and the second push rod 21 near the output end, and the two interfaces of the other T-pipe 3 are respectively connected to the side of the first push rod 2 and the second push rod 21 away from the output end.
[0037] Depend on Figure 1 , Figure 6 and Figure 7 The connecting assembly includes four connecting pipes 6, a positioning platform 61, a sealing ring 62, multiple elastic clamps 63, multiple barbs 64, and a fastening nut 65.
[0038] Four connecting pipes 6 are respectively installed on both sides of the top of the first push rod 2 and the second push rod 21, and the four connecting pipes 6 are connected to the interior of the first push rod 2 and the second push rod 21; the positioning platform 61 is set inside the connecting pipe 6, and the top of the positioning platform 61 is lower than the top of the connecting pipe 6; the sealing ring 62 is snapped into the inner top end of the connecting pipe 6, and the bottom of the sealing ring 62 abuts against the top of the positioning platform 61; the lower half of the sealing ring 62 is installed inside the connecting pipe 6, and the upper half of the sealing ring 62 is sleeved around the tee pipe 3; the sealing ring 62 prevents leakage at the connection of the tee pipe 3.
[0039] Specifically, the outer diameter of the sealing ring 62 is the same as the inner diameter of the connecting pipe 6.
[0040] Multiple elastic clamping elements 63 are circumferentially arranged on the top of the connecting pipe 6, and multiple barbs 64 are respectively arranged on the inner top wall of the multiple elastic clamping elements 63. The barbs 64 are shaped like fishhooks. The fastening nut 65 is threadedly installed on the outer periphery of the multiple elastic clamping elements 63. The outer periphery of the connecting pipe 6 is provided with threads that cooperate with the fastening nut 65. When the fastening nut 65 is tightened, the fastening nut 65 compresses the elastic clamping elements 63. When the elastic clamping elements 63 fix the tee pipe 3, the barbs 64 will press against the surface of the tee pipe 3 to further fix the tee pipe 3 and prevent the tee pipe 3 from detaching.
[0041] When the tee tube 3 is not connected, the multiple elastic clamps 63 are funnel-shaped, which facilitates the insertion of the tee tube 3. The fastening nut 65 is installed on the connecting pipe 6. After the tee tube 3 is inserted into the sealing ring 62, the fastening nut 65 is turned. The fastening nut 65 compresses the elastic clamps 63 during rotation, so that the elastic clamps 63 are clamped around the tee tube 3. At the same time, the barbs 64 press against the surface of the tee tube 3.
[0042] Depend on Figures 2 to 4 The first clamp assembly is provided to include two first clamps 4, four first positioning holes 41, two first screws 42, a first nut 43, four first positioning plates 44, and two first rotating shafts 45.
[0043] Four first positioning plates 44 are respectively set at the upper and lower ends of one side of the two first clamps 4, and two first rotating shafts 45 are respectively set between the four first positioning plates 44. The bottom of the cylinder of the first push rod 2 and the second push rod 21 are respectively hinged to the periphery of the two first rotating shafts 45. The first push rod 2 and the second push rod 21 can rotate along the two first rotating shafts 45, which facilitates the installation of the first clamps 4 on the periphery of the cable.
[0044] The first clamp 4 has an arc-shaped structure. Two first clamps 4 are symmetrically clamped and installed on both sides of the cable periphery. Four 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 one end of the two first screws 42. The mutual cooperation of the first screws 42 and the first nuts 43 makes the two first clamps 4 clamp and fix them to the periphery of the cable.
[0045] The first clamp 4 conforms to the cylindrical shape of the cable, and its size can be changed according to different cable models.
[0046] Depend on Figures 3 to 5 The second clamp assembly is provided to include two second clamps 5, four second positioning holes 51, two second screws 52, two second nuts 53, four second positioning plates 54, and two second rotating shafts 55.
[0047] Four second positioning plates 54 are respectively set at the upper and lower ends of one side of the two second clamps 5, and two second rotating shafts 55 are respectively set between the four second positioning plates 54. The top of the output end of the first push rod 2 and the second push rod 21 are respectively hinged to the periphery of the two second rotating shafts 55. The first push rod 2 and the second push rod 21 can rotate along the two second rotating shafts 55, which facilitates the installation of the second clamps 5 on the periphery of the aluminum sheath.
[0048] The second clamp 5 has an arc-shaped structure. The two second clamps 5 are symmetrically clamped and installed on both sides of the outer periphery of the aluminum sheath. The four 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 one end of the two second screws 52. The mutual cooperation of the second screws 52 and the second nuts 53 makes the two second clamps 5 clamp and fix them on the outer periphery of the aluminum sheath.
[0049] The second clamp 5 conforms to the cylindrical shape of the aluminum sheath, and the size of the second clamp 5 can be changed according to different models of aluminum sheaths.
[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 facing away from the first clamp 4 and the second clamp 5 is provided with anti-slip texture. The protective layer can protect the surface of the cable and the surface of the aluminum sheath, and prevent the surface of the cable and the surface of the aluminum sheath 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 cable and the aluminum sheath, so as to play an anti-slip role and reduce the pull-out rate.
[0051] Specifically, the average time for this device to peel off the aluminum sheath is 4 min 43 s < 5 min.
[0052] The beneficial effects of the hydraulic cylinder body 1, double-cylinder hydraulic rod assembly, two T-pipes 3, connecting assembly, first clamp assembly, and second clamp assembly are as follows: The first clamp 4 is installed at one end of the cable, and the second clamp 5 is installed at one end of the aluminum sheath. When the hydraulic cylinder body 1 is activated, its first push rod 2 and second push rod 21 push against the aluminum sheath to detach from the cable. There is no need for manual detachment of the aluminum sheath, which avoids the problem of deformation caused by external pressure during cable manufacturing or laying, which makes peeling difficult. The operation is simple, shortens the cable aluminum sheath detachment time, improves cable construction efficiency, and avoids cutting the cable body.
[0053] In use, two first clamps 4 are held on both sides of the cable, two first screws 42 are inserted into the first positioning holes 41, and a first nut 43 is screwed onto one end of the first screw 42, with the first nut 43 abutting against the outer wall of one side of the first clamp 4, so that the two first clamps 4 are clamped and fixed on the outer surface of both sides of the cable; two second clamps 5 are placed on both sides of the aluminum sheath, two second screws 52 are inserted into the second positioning holes 51, and a second nut 53 is screwed onto one end of the second screw 52, with the second nut 53 abutting against the outer wall of one side of the second clamp 5, so that the two second clamps 5 are clamped and fixed on the outer surface of both sides of the cable. After installation, the hydraulic cylinder body 1 is activated, and the hydraulic cylinder body 1 drives the output ends of the first push rod 2 and the second push rod 21 to extend out of the rod body. The output ends of the first push rod 2 and the second push rod 21 move with the second clamps 5, and the second clamps 5 clamp the aluminum sheath and detach from the cable, thus completing the aluminum sheath detachment process.
[0054] 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 novel high voltage cable aluminium sheath disengaging device comprising a hydraulic cylinder body (1) and a double cylinder hydraulic lever assembly, characterized in that, The output end of the hydraulic cylinder body (1) is provided with two three-way pipes (3), and the two three-way pipes (3) are fixedly connected with the double-cylinder hydraulic rod assembly through connecting assemblies. The bottom of the double-cylinder hydraulic rod assembly is hingedly provided with a first hoop assembly, and the first hoop assembly is arranged on the periphery of the cable; and the output end of the double-cylinder hydraulic rod assembly is hingedly provided with a second hoop assembly, and the second hoop assembly is arranged on the periphery of the aluminum sheath.
2. A novel high voltage cable aluminium sheath disengaging device as claimed in claim 1, wherein, The first hoop assembly comprises two first hoops (4), and the two first hoops (4) are provided with first positioning plates (44) on the two sides, respectively, and a first rotating shaft (45) is arranged between the two first positioning plates (44), the bottom of the double-cylinder hydraulic rod assembly is hingedly connected with the two first rotating shafts (45), respectively, and the two first hoops (4) are sleeved and arranged on the two sides of the periphery of the cable, first positioning holes (41) are formed in the two sides of the two first hoops (4), two first screw rods (42) are arranged through the four first positioning holes (41), and a first nut (43) is threadedly arranged on one side of the first screw rod (42).
3. A novel high voltage cable aluminium sheath disengaging device as claimed in claim 2, wherein, The second hoop assembly comprises two second hoops (5), and the two second hoops (5) are provided with second positioning plates (54) on the two sides, respectively, and a second rotating shaft (55) is arranged between the two second positioning plates (54), the top of the double-cylinder hydraulic rod assembly is hingedly connected with the two second rotating shafts (55), respectively, and the two second hoops (5) are sleeved and arranged on the two sides of the periphery of the aluminum sheath, second positioning holes (51) are formed in the two sides of the two second hoops (5), two second screw rods (52) are arranged through the four second positioning holes (51), and a second nut (53) is threadedly arranged on one side of the second screw rod (52).
4. A novel high voltage cable aluminium sheath disengaging device as claimed in claim 3, wherein, The double-cylinder hydraulic rod assembly comprises a first top rod (2) and a second top rod (21), the bottom of the first top rod (2) and the second top rod (21) is hingedly connected with the periphery of the two first rotating shafts (45), respectively, and the output end of the top of the first top rod (2) and the second top rod (21) is hingedly connected with the periphery of the two second rotating shafts (55), respectively.
5. A novel high voltage cable aluminium sheath disengaging device as claimed in claim 4, wherein, The inner walls of the two first hoops (4) and the two second hoops (5) are provided with protective layers, and the protective layers are provided with anti-skid lines on the sides away from the inner walls of the first hoops (4) or the second hoops (5).
6. A novel high voltage cable aluminum sheath disengaging device according to claim 1, characterized in that, The connecting assembly comprises four connecting pipes (6), the bottom ends of the four connecting pipes (6) are respectively installed on both sides of the top of the first top rod (2) and the second top rod (21), the inside of the connecting pipe (6) is provided with a positioning table (61), the inner top of the connecting pipe (6) is provided with a sealing ring (62), the bottom of the sealing ring (62) abuts against the top of the positioning table (61), one end of the tee pipe (3) is inserted into the inside of the sealing ring (62), the top of the connecting pipe (6) is provided with a plurality of elastic clamping pieces (63), the inner top of the plurality of elastic clamping pieces (63) is provided with a barb (64), the plurality of elastic clamping pieces (63) are clamped on the periphery of the tee pipe (3), the barb (64) abuts against the outer side of the tee pipe (3), the periphery of the plurality of elastic clamping pieces (63) is screw-mounted with a fastening nut (65), and the fastening nut (65) is screw-engaged with the connecting pipe (6).
7. A novel high voltage cable aluminium sheath disengaging device as claimed in claim 6, wherein, The periphery of the first top rod (2) and the second top rod (21) is provided with a plurality of gripping grooves (22).