A method for laying high voltage cables through pipes

Abstract

The present invention provides a method for laying high-voltage cables through pipes, belonging to the technical field of electric power construction, and comprising: S100 selecting a tray: selecting a tray according to the inner diameter of the pipe for laying the cable through pipes, the bottom of the tray having a plurality of rolling parts distributed on a circumferential surface determined by the inner diameter of the pipe; S200 installing a hoop body and a tray: detachably connecting the hoop body to the upper end of the tray, and then installing the hoop body on the cable; S300 laying through pipes. The present invention selects an adapted tray according to the inner diameter of the pipe, and the rolling parts at the bottom of the tray can all fit the inner wall of the pipe, thereby providing stable support, and the support stability is greatly improved, which helps to improve the connection stability between the hoop body and the cable, thereby preventing the hoop body from scratching the cable.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power construction, and in particular relates to a method for laying high-voltage cables through pipes. Background Art

[0002] As the size of cities expands, the demand for electricity consumption in cities continues to grow. The coordination of urban planning and power grid planning is becoming increasingly important. Among them, pipe laying is one of the commonly used methods in power grid planning. In the laying of cables through pipes, the conventional method is to directly insert the cable into the pipe. The cable is in direct contact with the inner wall of the pipe and generates sliding friction, and the magnitude of the friction is proportional to the weight of the cable. Since the cable is in direct contact with the inner wall of the pipe, it is easy to cause scratches on the outer wall of the cable during laying, affecting the service life of the cable. If the cable is too heavy and the tensile strength of the cable itself is limited, it may even cause relatively serious mechanical damage to the cable. In the relevant prior art, a clamping structure is provided on the cable, and rolling support is provided by the rollers provided on the clamping structure, so as to avoid contact and friction between the cable and the inner wall of the pipe during the pipe wearing process, but it cannot adapt to the diameter of the inner wall of the pipe, and it is easy to rotate left and right under the action of gravity and cable traction, resulting in a torsional force between the clamping hoop and the cable, which may cause the clamping hoop to loosen or twist relative to the cable and scratch the cable. Summary of the invention

[0003] The present invention aims to solve at least one of the above technical problems existing in the prior art. To this end, the present invention provides a method for laying high-voltage cables through pipes, which takes into account the influence of the inner diameter of the pipe and can effectively solve the problem of scratches caused by torsion between the clamp structure and the cable.

[0004] A method for laying a high-voltage cable through a pipe according to an embodiment of the present invention includes:

[0005] S100 Selecting a tray: selecting a tray according to the inner diameter of the pipe in which the cable is to be laid, wherein the bottom of the tray has a plurality of rolling parts distributed on a circumferential surface determined by the inner diameter of the pipe;

[0006] S200: installing the hoop body and the tray: detachably connecting the hoop body to the upper end of the tray, and then installing the hoop body on the cable;

[0007] S300 is laid through pipes.

[0008] The high-voltage cable pipe laying method according to the embodiment of the present invention has at least the following beneficial effects: the high-voltage cable pipe laying method of the present invention selects an adaptive tray according to the inner diameter of the pipe. Since the bottom of the tray is provided with a plurality of rolling parts along the circumferential surface determined by the inner diameter of the pipe, the rolling parts can all fit the inner wall of the pipe, thereby providing stable support. Compared with the prior art where the rollers of the clamping structure fail to all abut against the inner wall of the pipe, and may rotate circumferentially due to the gravity of the cable and the force applied during traction, the support stability is greatly improved, which helps to improve the connection stability between the clamp body and the cable, thereby preventing the clamp body from scratching the cable.

[0009] According to some embodiments of the present invention, in step S200 of installing the hoop body and the pallet, the hoop body is detachably connected to the pallet, including: a locking component is provided on at least one of the pallet and the hoop body, and a locking plate is rotatably provided on the locking component, and a keyhole for the locking plate to pass through is provided on the other corresponding one, and the locking plate is passed through the keyhole and rotated to a set angle for clamping.

[0010] According to some embodiments of the present invention, an adjusting plate is rotatably provided on the locking assembly, the adjusting plate is connected to the locking plate in a fixed angle manner or is transmission-connected to the locking plate, and the rotation of the locking plate is controlled by turning the adjusting plate.

[0011] According to some embodiments of the present invention, the locking assembly is disposed on the tray, the keyhole is disposed on the hoop body, a rotating shaft is provided on the locking assembly, and the upper end of the rotating shaft extends to the top of the tray, and the lower end of the rotating shaft extends to the bottom of the tray, the locking plate is connected to the upper end of the rotating shaft, and the adjusting plate is connected to the lower end of the rotating shaft, and the rotation of the locking plate is controlled by moving the adjusting plate below the tray.

[0012] According to some embodiments of the present invention, the locking assembly is further provided with a limiting portion, and the limiting portion is located in the rotation path of the adjusting plate and is used to limit the rotation angle range of the adjusting plate.

[0013] According to some embodiments of the present invention, a mounting hole is provided on the tray, and the locking assembly includes a mounting seat, a rotating shaft and an elastic member, the mounting seat is connected to the tray and at least partially fitted into the mounting hole, the lower end of the mounting seat is provided with a circular ring portion coaxially with the mounting hole, the lower end of the side wall of the circular ring portion is provided with a notch, the rotating shaft is coaxially distributed with the mounting hole and penetrates the mounting seat, the upper end of the rotating shaft is located above the tray, the lower end of the rotating shaft passes through the circular ring portion, the locking plate is connected to the upper end of the rotating shaft, the adjusting plate is connected to the lower end of the rotating shaft and passes through the notch laterally, and the elastic member is arranged between the adjusting plate and the mounting seat or between the rotating shaft and the mounting seat.

[0014] According to some embodiments of the present invention, the hoop body includes a first arm, a second arm and a bolt assembly, the lower ends of the first arm and the second arm are hinged, and the bolt assembly is arranged between the upper ends of the first arm and the second arm.

[0015] According to some embodiments of the present invention, positioning holes are provided at the lower ends of the first holding arm and the second holding arm, and a positioning pin capable of being inserted into the positioning hole is provided at the upper end of the tray.

[0016] According to some embodiments of the present invention, S200 installing the hoop and the tray includes:

[0017] S201, controlling the tray to approach the hoop body until the positioning pin is inserted into the positioning hole, thereby completing the positioning of the tray and the hoop body;

[0018] S202, rotating the adjusting plate from the bottom of the tray, driving the locking plate to rotate and engage with the hoop body, thereby completing the installation of the tray and the hoop body;

[0019] S203, controlling the first arm and the second arm to wrap the cable, and then connecting and tightening them through the bolt assembly, and controlling the first arm and the second arm to clamp the cable.

[0020] According to some embodiments of the present invention, the rolling portion is configured as a bull's eye bearing.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and some additional aspects and advantages will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 A schematic diagram of a process of the present invention;

[0024] Figure 2 It is a schematic diagram of an overall structure of the tray and the hoop body in the present invention;

[0025] Figure 3 It is a schematic diagram of an axial structure of a tray and a hoop body in the present invention;

[0026] Figure 4 A schematic diagram of a structural decomposition of the tray and the hoop body in the present invention;

[0027] Figure 5 A schematic diagram of the structure of the tray in the present invention;

[0028] Figure 6 A schematic diagram of a connection of the clamp in the present invention;

[0029] Figure 7 is a cross-sectional view of a lock assembly;

[0030] Figure 8 It is a schematic diagram of the overall structure of the lock assembly;

[0031] Fig. 9 It is a working schematic diagram of the tray and the hoop body in the present invention. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] As the size of cities expands, the demand for electricity consumption in cities continues to grow. The coordination of urban planning and power grid planning is becoming increasingly important. Among them, pipe laying is one of the commonly used methods in power grid planning. In the laying of cables through pipes, the conventional method is to directly insert the cable into the pipe. The cable is in direct contact with the inner wall of the pipe and generates sliding friction, and the magnitude of the friction is proportional to the weight of the cable. Since the cable is in direct contact with the inner wall of the pipe, it is easy to cause scratches on the outer wall of the cable during laying, affecting the service life of the cable. If the cable is too heavy and the tensile strength of the cable itself is limited, it may even cause relatively serious mechanical damage to the cable. In the relevant prior art, a clamping structure is provided on the cable, and rolling support is provided by the rollers provided on the clamping structure, so as to avoid contact and friction between the cable and the inner wall of the pipe during the pipe wearing process, but it cannot adapt to the diameter of the inner wall of the pipe, and it is easy to rotate left and right under the action of gravity and cable traction, resulting in a torsional force between the clamping hoop and the cable, which may cause the clamping hoop to loosen or twist relative to the cable and scratch the cable.

[0037] To this end, the present invention provides a method for laying high-voltage cables through pipes, which takes into account the influence of the inner diameter of the pipe and can effectively solve the problem of scratches caused by torsion between the clamp structure and the cable.

[0038] Reference Figure 1 As shown, a method for laying a high-voltage cable through a pipe according to an embodiment of the present invention includes:

[0039] S100 Selecting a tray 200: Selecting a tray 200 according to the inner diameter of the pipe in which the cable is to be laid, the bottom of the tray 200 has a plurality of rolling parts 201 distributed on a circumferential surface determined by the inner diameter of the pipe;

[0040] S200 installing the ferrule 100 and the tray 200: detachably connecting the ferrule 100 to the upper end of the tray 200, and then installing the ferrule 100 on the cable;

[0041] S300 is laid through pipes.

[0042] The high-voltage cable pipe laying method of the present invention selects an adapted tray according to the inner diameter of the pipe. Since a plurality of rolling parts are arranged on the bottom of the tray along a circumferential surface determined by the inner diameter of the pipe, the rolling parts can all fit the inner wall of the pipe, thereby providing stable support. Compared with the prior art in which the rollers of the clamping hoop structure fail to all abut against the inner wall of the pipe and may rotate circumferentially due to the gravity of the cable and the force applied during the traction process, the support stability is greatly improved, which helps to improve the connection stability between the clamp body and the cable, thereby preventing the clamp body from scratching the cable.

[0043] In the high-voltage cable pipe laying method of the present invention, the structural arrangement of the tray 200 and the hoop body 100 will be combined Figures 2 to 9This is described in the following examples.

[0044] Reference Figure 3 , Figures 4 to 8 In some embodiments of the present invention, a locking assembly 300 is provided on the tray 200, and a locking piece 303 is rotatably provided on the upper end of the locking assembly 300. A keyhole 108 for the locking piece 303 to pass through is correspondingly provided on the hoop body 100. The tray 200 is detachably connected to the hoop body 100 by the locking piece 303 passing through the keyhole 108 and rotating a set angle. The principle of the detachable connection in this embodiment is that the locking piece 303 will be misaligned with the keyhole 108 after rotating a set angle, so that it cannot be disengaged from the keyhole 108, thereby realizing the clamping. It should be noted that a plurality of locking assemblies 300 and corresponding keyholes 108 can be provided between the tray 200 and the hoop body 100, and the position of the locking assembly 300 is not limited to the tray 200, but can also be provided on the hoop body 100. Similarly, the keyhole 108 is not limited to being provided on the hoop body 100, but can also be provided on the tray 200.

[0045] Reference Figure 7 , Figure 8 In some embodiments of the present invention, the lock assembly 300 is also rotatably provided with an adjusting piece 306, and the adjusting piece 306 is connected to the locking piece 303 in a manner of fixed angle, and is used to drive the locking piece 303 to rotate during the rotation process. Since the locking piece 303 needs to cooperate with the keyhole 108 to achieve the snap connection, it is not convenient to directly contact the locking piece 303 for rotation control in practical applications. This embodiment controls the rotation of the locking piece 303 by setting the adjusting piece 306, which can improve the convenience of operation. It connects the locking piece 303 in a manner of fixed angle, that is, when the adjusting piece 306 rotates, the locking piece 303 rotates, and the operation is simple and reliable. Specifically, there are many ways of connecting with fixed angles, and those skilled in the art can flexibly set them according to needs.

[0046] In some embodiments of the present invention, the adjusting piece 306 is connected to the locking piece 303 in a transmission manner to control the rotation of the locking piece 303. By adopting the transmission connection method, on the basis of being able to realize the rotation control of the locking piece 303, other functions can be further configured, such as rotation amplification and reduction. For example, a gear set is set between the adjusting piece 306 and the locking piece 303, and the transmission ratio of the gear set is used to make the angle of rotation of the locking piece 303 greater or less than the rotation angle of the adjusting piece 306 after the adjusting piece 306 rotates an angle, so as to meet the possible needs.

[0047] Reference Figures 5 to 8In some embodiments of the present invention, the locking assembly 300 is disposed on the tray 200, and specifically includes a rotating shaft 305, a locking piece 303, and an adjusting piece 306. The rotating shaft 305 is penetrated on the tray 200, so that it can rotate relative to the tray 200. The upper end of the rotating shaft 305 extends to the top of the tray 200, and the lower end of the rotating shaft 305 extends to the bottom of the tray 200. The locking piece 303 is connected to the upper end of the rotating shaft 305, and the adjusting piece 306 is connected to the lower end of the rotating shaft 305. Since the upper end of the tray 200 is connected to and supports the hoop body 100, the adjusting piece 306 is disposed below the tray 200, which is convenient for operation, will not affect the connection of the hoop body 100, and will not form a protrusion that may scratch the cable.

[0048] It is understandable that when the locking piece 303 adopts a rotating body structure, such as a circular plate, it should be eccentrically arranged with respect to the rotating shaft 305, so that when the rotating shaft 305 rotates, it moves toward one side and is misaligned with the keyhole 108 for engagement. In the case of adopting other structures, it can be coaxially arranged with the rotating shaft 305. For example, when the locking piece 303 is arranged in a long strip structure, the keyhole 108 is also a long strip hole. When the rotating shaft 305 rotates, the locking piece 303 will rotate accordingly and be misaligned with the keyhole 108, and cannot be disengaged from the keyhole 108, so as to achieve engagement.

[0049] In some embodiments of the present invention, the locking assembly 300 is further provided with a limiting portion, which is located in the rotation path of the adjusting piece 306 and is used to limit the rotation angle range of the adjusting piece 306. Figures 5 to 7Specifically, a mounting hole is provided on the tray 200, and the mounting hole passes through the tray 200. The locking assembly 300 includes a mounting seat 301, a rotating shaft 305 and an elastic member 304. The upper end of the mounting seat 301 is fitted into the mounting hole, and a mounting plate is provided to fit the lower end surface of the tray 200. The four vertex positions of the mounting plate are connected to the tray 200 by screws. The lower end of the mounting seat 301 is coaxially provided with a circular ring portion 302 with the mounting hole, and a notch is provided at the lower end of the side wall of the circular ring portion 302. The rotating shaft 305 is coaxially distributed with the mounting hole and penetrates the mounting seat 301, and the upper end of the rotating shaft 305 extends to the top of the tray 200, and the lower end of the rotating shaft 305 extends into the circular ring portion 302. The locking piece 303 is fixedly connected to the upper end of the rotating shaft 305. The adjusting piece 306 is fixedly connected to the lower end of the rotating shaft 305, and the adjusting piece 306 extends through the notch along the radial direction of the rotating shaft 305. The elastic member 304 is arranged between the adjusting piece 306 and the mounting seat 301. With the structural setting of this embodiment, the adjusting piece 306 can only rotate within the central angle range corresponding to the notch, so as to limit the rotation range of the adjusting piece 306, and then limit the rotation angle of the locking piece 303, so as to avoid the difficulty of adjusting the locking piece 303 to align with the keyhole 108 when the worker controls the locking or unlocking, thereby improving the convenience of operation. The central angle corresponding to the notch is preferably set to 90°. The locking assembly 300 is installed on the pallet 200 through the mounting seat 301. Since the pallet 200 may need to be frequently disassembled and replaced, it is convenient to replace the locking assembly 300 separately in the case of wear and tear, which can reduce the cost of use. Through the setting of the elastic member 304, a pre-tightening force can be applied to the adjusting piece 306 and the rotating shaft 305, so as to avoid the locking assembly 300 from being automatically unlocked during the movement. The elastic member 304 may be further used to exert a downward force on the locking piece 303, thereby driving the locking piece 303 to press the tray 200 along the axial direction of the rotating shaft 305 to eliminate the gap. The elastic member 304 may also be arranged between the rotating shaft 305 and the mounting seat 301. The elastic member 304 may be a spring or other structures having the same function.

[0050] In some embodiments of the present invention, the rolling part 201 is configured as a bull's eye bearing. Based on the 360° rotatable property of the bull's eye bearing, the tray 200 can move axially or radially during the process of laying the cable through the pipe, thereby avoiding wear between the hoop body 100 and the cable.

[0051] In some embodiments of the present invention, the tray 200 is provided with multiple groups of rolling parts 201 along the width direction, and each group of rolling parts 201 includes multiple rolling parts 201. It can be understood that the width direction of the tray 200 is the length direction of the cable. By providing multiple groups of rolling parts 201, it is beneficial to improve the stability of the support, and the number of groups of rolling parts 201 on the tray 200 can be flexibly set according to the supported weight of the cable. Each group of rolling parts 201 is provided with multiple rolling parts 201, that is, each group of rolling parts 201 is provided with multiple rolling parts 201 along the circumferential direction, which can improve the stability of the support, wherein the more rolling parts 201 are provided in each group of rolling parts 201, the greater the radial force strength of the tray 200 along the cable.

[0052] In some embodiments of the present invention, the hoop body 100 includes a first arm 102, a second arm 101 and a bolt assembly, one end of the first arm 102 and the second arm 101 are hinged, and the bolt assembly is arranged between the other ends of the first arm 102 and the second arm 101. The bolt assembly can be used to control the first arm 102 and the second arm 101 to clamp the cable, thereby increasing the clamping force and avoiding sliding damage between the hoop body 100 and the cable. In addition, the solution of two arms for clamping and one bolt assembly for installation has a simple structure and high disassembly and assembly efficiency.

[0053] In some embodiments of the present invention, the lower end of the hoop body 100 is provided with a positioning hole 106, and the upper end of the tray 200 is provided with a positioning pin 202 inserted into the positioning hole 106. The positioning hole 106 and the positioning pin 202 are used to perform positioning first, which can improve the installation efficiency of the lock assembly 300. In addition, the positioning hole 106 can also be provided on the tray 200, and the positioning pin 202 can be provided on the hoop body 100.

[0054] In some embodiments of the present invention, a semi-conductive rubber pad 105 is provided on the inner side of the first arm 102 and the second arm 101. The semi-conductive rubber pad 105 is used to wrap the cable, which can not only avoid damage to the outer wall of the cable, but also eliminate the potential difference on the surface of the cable after the cable is energized, thereby ensuring the safety of the cable operation.

[0055] Reference Figures 2 to 9In some embodiments of the present invention, the hoop body 100 includes a first arm 102 and a second arm 101. The left ends of the first arm 102 and the second arm 101 are hinged together. A live bolt 103 is hinged to the right end of the first arm 102. A nut 104 is installed on the live bolt 103. An opening slot for the live bolt 103 to pass through is provided at the right end of the second arm 101. Both the first arm 102 and the second arm 101 are arc-shaped structures. Two keyholes 108 are provided at the lower end of the first arm 102, and positioning holes 106 are provided on the outside of the keyholes 108. Semi-conductive rubber pads 105 are provided on the inner sides of the first arm 102 and the second arm 101. A clearance hole 107 is provided on the semi-conductive rubber pad 105 on the first arm 102 corresponding to the keyhole 108. The tray 200 is divided into a first support portion 203, a second support portion 204 and a third support portion 205 along the width direction. The three support portions are arranged in an arc structure along the length direction. A bull's eye bearing is respectively arranged at the middle position and the two end positions of the lower ends of the three support portions, and the lower ends of the nine bull's eye bearings are located on a circumferential surface. The upper end arc surfaces of the first support portion 203 and the third support portion 205 are kept flush, while the upper end arc surface of the second support portion 204 is concave relative to the upper end arc surfaces of the first support portion 203 and the third support portion 205, and the width of the second support portion 204 is consistent with the width of the first arm 102, so that the hoop body 100 is embedded between the first support portion 203 and the third support portion 205. The upper end of the second support portion 204 is provided with a positioning pin 202 inserted into the two positioning holes 106 on the first arm 102 and the second arm 101. And two lock components 300 are installed on the second support portion 204 corresponding to the two lock holes 108. The lock assembly 300 includes a mounting seat 301, a rotating shaft 305, an adjusting piece 306, a locking piece 303 and an elastic member 304, wherein two mounting holes are provided on the second support portion 204, and the mounting seat 301 is correspondingly installed in the mounting holes. The rotating shaft 305 is provided on the mounting seat 301, and the upper end of the rotating shaft 305 extends upward to the upper part of the second support portion 204, and the lower end extends downward to the lower part of the second support portion 204. The shape of the locking piece 303 is adapted to the keyhole 108, and is fixedly provided at the upper end of the rotating shaft 305. The adjusting piece 306 is provided at the lower end of the rotating shaft 305. The elastic member 304 abuts between the adjusting piece 306 and the mounting seat 301. At the same time, the mounting seat 301 is provided with a circular ring portion 302 on the circumferential side of the lower end of the rotating shaft 305, and the circular ring portion 302 is provided with a notch with a central angle of 90°, and the adjusting piece 306 is located in the notch. The locking piece 303 passes through the keyhole 108 and clamps the first arm 102 and the second arm 101 in the clearance hole 107. The adjusting piece 306 is located in the space between the bull's eye bearing and the lower end surface of the second support part 204 to avoid affecting the rolling of the bull's eye bearing. The first support part 203, the second support part 204 and the third support part 205 can be connected as an integral structure or a split connection structure. It is not limited to three support parts.

[0056] Based on the hoop body 100 and the tray 200 of the above-mentioned structure, the high-voltage cable pipe laying method of this embodiment includes:

[0057] S100 Selecting a tray 200: selecting a tray 200 according to the inner diameter of the pipe in which the cable is to be laid, and the selected tray 200 satisfies: the bottom of the tray 200 has a plurality of rolling parts 201 distributed on a circumferential surface determined by the inner diameter of the pipe;

[0058] S200 installs the ferrule 100 and the tray 200: the ferrule 100 is detachably connected to the upper end of the tray 200, and then the ferrule 100 is installed on the cable, specifically including:

[0059] S201, control the tray 200 to be close to the hoop body 100, and use two positioning pins 202 to insert into two positioning holes 106 to complete the positioning of the tray 200 and the hoop body 100, and the two locking pieces 303 pass through the two aligned keyholes 108 during the positioning process;

[0060] S202, rotating the adjusting plate 306 from the bottom of the tray 200, driving the locking plate 303 to rotate to be misaligned with the keyhole 108, so as to be engaged with the hoop body 100, and completing the installation of the tray 200 and the hoop body 100;

[0061] S203, controlling the first arm 102 and the second arm 101 to wrap the cable, and then controlling the movable bolt 103 to rotate into the open slot, and gradually tightening the nut 104 to clamp the cable;

[0062] S300 is laid through pipes.

[0063] After the laying is completed, the nut 104 is loosened to remove the entire hoop body 100 and the tray 200. The adjusting piece 306 can also be rotated first to remove the tray 200 from the hoop body 100, and then the nut 104 is loosened to disassemble the hoop body 100.

[0064] It can be understood that the present invention has the following advantages:

[0065] 1. The installation steps of the hoop body 100 are simple and easy to operate;

[0066] 2. With the bull's eye bearing as the support point, the spherical structure inside can rotate 360°, with low resistance and good flexibility when laying pipes;

[0067] 3. The arc-shaped distribution of multiple rows of bull's eye bearings can reduce the force per unit area of ​​the pipeline and ensure the stability of the cable laying process;

[0068] 4. The hoop body 100 and the tray 200 can be quickly assembled and disassembled, and the bottom tray 200 can be selected according to the specific pipe diameter, which can effectively reduce the product development cost;

[0069] 5. The positioning holes 106 of the first holding arm 102 and the second holding arm 101 cooperate with the positioning pins 202 on the tray 200 to achieve fast and accurate installation;

[0070] 6. The lock assembly 300 is designed with a 90° limit notch, which allows installers to quickly identify the installation status and avoid manual misoperation;

[0071] 7. Using semi-conductive rubber to wrap the cable can not only avoid damage to the outer wall of the cable, but also eliminate the potential difference on the surface of the cable after the cable is energized, thereby ensuring the safety of cable operation.

[0072] Therefore, the use of this method for cable pipe laying can isolate the direct contact between the outer wall of the cable and the inner wall of the pipe, and there will be no relative sliding between the clamp and the cable, thus avoiding cable wear and reducing laying resistance, thus preventing the cable from being pulled apart. At the same time, it can be installed quickly, ensuring the efficiency of cable laying construction.

[0073] The present invention has been described in detail above in conjunction with the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A method for laying high-voltage cables through pipes, characterized in that: include: S100 Selecting a tray: selecting a tray according to the inner diameter of the pipe in which the cable is to be laid, wherein the bottom of the tray has a plurality of rolling parts distributed on a circumferential surface determined by the inner diameter of the pipe; S200: installing the hoop body and the tray: detachably connecting the hoop body to the upper end of the tray, and then installing the hoop body on the cable; S300 pipe laying; In step S200 of installing the hoop body and the tray, the hoop body is detachably connected to the tray, including: providing a locking assembly on at least one of the tray and the hoop body, and rotating a locking plate on the locking assembly, providing a keyhole for the locking plate to pass through on the other corresponding hoop body, and locking the locking plate by passing through the keyhole and rotating the locking plate to a set angle; An adjusting piece is rotatably arranged on the lock assembly, the adjusting piece is connected to the lock piece in a fixed angle manner or is transmission-connected to the lock piece, and the lock piece is controlled to rotate by turning the adjusting piece; The tray is provided with a mounting hole, and the locking assembly includes a mounting seat, a rotating shaft and an elastic member. The mounting seat is connected to the tray and at least partially fitted into the mounting hole. The lower end of the mounting seat is provided with a circular ring portion coaxially with the mounting hole, and the lower end of the side wall of the circular ring portion is provided with a notch. The rotating shaft is coaxially distributed with the mounting hole and penetrates the mounting seat. The upper end of the rotating shaft is located above the tray, and the lower end of the rotating shaft passes through the circular ring portion. The locking plate is connected to the upper end of the rotating shaft, and the adjusting plate is connected to the lower end of the rotating shaft and passes through the notch laterally. The elastic member is arranged between the adjusting plate and the mounting seat or between the rotating shaft and the mounting seat.

2. The method for laying high-voltage cables through pipes according to claim 1, characterized in that: The locking assembly is arranged on the tray, the keyhole is arranged on the hoop body, a rotating shaft is arranged on the locking assembly, and the upper end of the rotating shaft extends to the top of the tray, and the lower end of the rotating shaft extends to the bottom of the tray, the locking plate is connected to the upper end of the rotating shaft, and the adjusting plate is connected to the lower end of the rotating shaft, and the rotation of the locking plate is controlled by moving the adjusting plate under the tray.

3. The method for laying high-voltage cables through pipes according to claim 1, characterized in that: The locking assembly is also provided with a limiting portion, which is located in the rotation path of the adjusting piece and is used to limit the rotation angle range of the adjusting piece.

4. The method for laying high-voltage cables through pipes according to claim 1, characterized in that: The hoop body comprises a first arm, a second arm and a bolt assembly, the lower ends of the first arm and the second arm are hinged, and the bolt assembly is arranged between the upper ends of the first arm and the second arm.

5. The method for laying high-voltage cables through pipes according to claim 4 is characterized in that: Positioning holes are provided at the lower ends of the first holding arm and the second holding arm, and a positioning pin capable of being inserted into the positioning hole is provided at the upper end of the tray.

6. The method for laying high-voltage cables through pipes according to claim 5, characterized in that: S200 Mounting Hoop and Tray Includes: S201, controlling the tray to approach the hoop body until the positioning pin is inserted into the positioning hole, thereby completing the positioning of the tray and the hoop body; S202, rotating the adjusting plate from the bottom of the tray, driving the locking plate to rotate and engage with the hoop body, thereby completing the installation of the tray and the hoop body; S203, controlling the first arm and the second arm to wrap the cable, and then connecting and tightening them through the bolt assembly, and controlling the first arm and the second arm to clamp the cable.

7. The method for laying high-voltage cables through pipes according to claim 1, characterized in that: The rolling part is configured as a bull's eye bearing.

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