An overhead optical cable winding preformed wire auxiliary lifting device for iron towers and its lifting method

Abstract

The present invention relates to an overhead optical cable winding preformed wire auxiliary lifting device for iron towers and a lifting method thereof, which are widely used in line construction and maintenance, and belong to the technical field of power maintenance construction equipment. It includes a vehicle-mounted jack and a U-shaped clamping plate fixed to the bottom of the vehicle-mounted jack. The opening of the U-shaped clamping plate is fastened to the iron tower by a top screw. A horizontal support rod is installed at the top of the vehicle-mounted jack. A rigging with the same structure is hung at both ends of the horizontal support rod. A suspension clamp is hung at the bottom of each of the two riggings. The length direction of the suspension clamp is the same as the length direction of the horizontal support rod. The present invention can easily lift the optical cable to an appropriate height, leaving enough space for the winding of the preformed wire, saving time and effort, reducing the risk factors in the work to the lowest level, and avoiding personal injuries to construction workers.

Description

Technical Field

[0001] The present invention relates to an overhead optical cable winding preformed wire auxiliary lifting device for iron towers and a lifting method thereof, which are widely used in line construction and maintenance, and belong to the technical field of electric power maintenance construction equipment. Background Art

[0002] During the construction of OPGW optical cable laying for transmission overhead lines, after the optical cable is tightened to the designed sag, it is necessary for the staff to first wind the optical cable protection preformed wire around the optical cable, and then lift the optical cable from the laying pulley to the hanging point of the iron tower. Due to the lack of suitable working tools, the tower operators often use the method of carrying on the shoulder to perform the above operations. During the entire lifting process, the shoulders and waists of the staff need to bear a great deal of force, and the shoulders are often scratched by the conductors, and waist sprains often occur. When winding the preformed wire, due to the narrow working space, it is often necessary for the operators to move the optical cable back and forth, and for large span and top span sections, often two people need to cooperate to complete it.

[0003] In order to avoid the occurrence of the above dangerous situations, as well as reduce the labor intensity and construction cost, it is urgent to develop a new auxiliary lifting device to minimize the risk factors in the work and avoid personal injuries to construction workers. Summary of the Invention

[0004] The purpose of the present invention is to provide an overhead optical cable winding preformed wire auxiliary lifting device for iron towers and a lifting method thereof. This lifting device can easily lift the optical cable to an appropriate height, leaving enough space for the winding of the preformed wire, saving time and effort, minimizing the risk factors in the work, and avoiding personal injuries to construction workers.

[0005] An overhead optical cable winding preformed wire auxiliary lifting device for iron towers is characterized in that it includes a vehicle-mounted jack and a U-shaped clamping plate fixed to the bottom of the vehicle-mounted jack. The opening of the U-shaped clamping plate is fastened to the iron tower by a jackscrew. A horizontal support rod is installed on the top of the vehicle-mounted jack. At both ends of the horizontal support rod, a rigging with the same structure is hung. At the bottom of both riggings, a suspension clamp is hung. The length direction of the suspension clamp is the same as the length direction of the horizontal support rod;

[0006] The horizontal support rod is welded to the top of the vehicle-mounted jack by an angle steel;

[0007] Hanging rings are provided at both ends of the horizontal support rod, and the hanging rings are hooked to the hooks at the top of the riggings;

[0008] The rigging is a turnbuckle. The turnbuckle includes a left-handed threaded adjusting rod and a right-handed threaded adjusting rod arranged vertically. Both the left-handed threaded adjusting rod and the right-handed threaded adjusting rod are screwed onto a pull rod. A hook is installed at the top of the pull rod, and a hanging ring for hanging the suspension clamp is installed at the bottom of the pull rod.

[0009] One end of the screw rod of the vehicle jack is welded and fixed with a nut for cooperating with an electric wrench.

[0010] An auxiliary lifting device for overhead optical cable winding preformed strands of a iron tower of the present invention is characterized by including the following steps:

[0011] 1) Fixing on the iron tower angle steel

[0012] The operating personnel on the iron tower place the auxiliary lifting device at an appropriate position on the iron tower, so that the horizontal support rod is directly above the position where the preformed strands are to be installed, the U-shaped clamping plate is wrapped around the iron tower angle steel, and the top screw 3 on the U-shaped clamping plate is tightened to realize the fixation between the lifting device and the iron tower;

[0013] 2) Adjusting the height of the suspension clamp

[0014] Shrink the vehicle jack to the lowest position, hang the two turnbuckles on the hanging rings at both ends of the horizontal support rod respectively, and adjust the lengths of the two turnbuckles, so that the suspension clamp is slightly lower than the optical cable, which is convenient for installing the optical cable;

[0015] 3) Installing the optical cable

[0016] Remove the connecting bolt between the turnbuckle and the suspension clamp, put the two suspension clamps on the optical cable, and reinsert the connecting bolt between the turnbuckle and the suspension clamp. Shrink the turnbuckle to an appropriate length to make the forces on both sides of the entire lifting device balanced;

[0017] 4) Winding the preformed strands

[0018] Rotate the screw rod of the vehicle jack with an electric wrench to raise the vehicle jack to a suitable height. The horizontal support rod drives the optical cable through the turnbuckle to make it leave the pulley by a sufficient distance, leaving enough space for winding the preformed strands. Align the fixed point of the optical cable with the center point of the preformed strands, and install the preformed strands according to the installation requirements of the preformed strands;

[0019] 5) Loosening the optical cable

[0020] After the work of winding the preformed strands is completed, operate the electric wrench to make the optical cable fall back to the installation position. After installing the optical cable fixing clamp, operate the electric wrench to unload the device, and remove the auxiliary lifting device to complete the entire installation process.

[0021] The technical effects and advantages of the present invention:

[0022] 1. Convenient installation: The auxiliary lifting device can be fastened to the iron tower by simply tightening two fastening bolts, and the installation is fast and convenient.

[0023] 2. Simple and efficient operation: In practical applications, only one operator at a high place is required to complete the winding of the preformed strands and the lifting of the optical cable, which is convenient and fast.

[0024] 3. It can ensure personal safety and improve the working conditions of the staff: In the original construction operations, due to the lack of appropriate lifting tools, the method of workers carrying on their shoulders was often adopted, which easily led to consequences such as lumbar sprains and shoulder contusions for workers working at heights. After using this device, the staff can easily lift the optical cable in place with the help of mechanical force, improving the working conditions of the staff, reducing the labor intensity, reducing potential safety hazards during construction, and thus ensuring personal safety. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of an auxiliary lifting device for an overhead optical cable winding preformed wire used for a steel tower according to the present invention.

[0026] In the figure: 1, vehicle-mounted jack; 2, U-shaped clamping plate; 3, jackscrew; 4, steel tower; 5, horizontal support rod; 6, rigging; 7, suspension clamp; 8, angle steel; 9, hanging ring; 10, hook; 11, left-handed threaded adjusting rod; 12, right-handed threaded adjusting rod; 13, pull rod; 14, hanging connection ring; 15, lead screw; 16, nut. Detailed Embodiment

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] The present invention provides an auxiliary lifting device for an overhead optical cable winding preformed wire used for a steel tower as shown in Figure 1 , which includes a vehicle-mounted jack 1 and a U-shaped clamping plate 2 fixed to the bottom of the vehicle-mounted jack 1. The opening of the U-shaped clamping plate 2 is fastened to the steel tower 4 through a jackscrew 3. A horizontal support rod 5 is installed at the top of the vehicle-mounted jack 1. Two riggings 6 with the same structure are hung at both ends of the horizontal support rod 5. A suspension clamp 7 is hung at the bottom of each of the two riggings 6. The length direction of the suspension clamp 7 is the same as the length direction of the horizontal support rod 5;

[0029] For the convenience of installation, the horizontal support rod 5 is welded to the top of the vehicle-mounted jack 1 through an angle steel 8;

[0030] For the convenience of hanging, hanging rings 9 are provided at both ends of the horizontal support rod 5, and the hanging rings 9 are hung with the hooks 10 at the top of the riggings 6;

[0031] Specific structure of the rigging: The rigging 6 is a turnbuckle. The turnbuckle includes a left-handed threaded adjusting rod 11 and a right-handed threaded adjusting rod 12 arranged vertically. Both the left-handed threaded adjusting rod 11 and the right-handed threaded adjusting rod 12 are screwed onto a pull rod 13. A hook 10 is installed at the top of the pull rod 13, and a hanging ring 14 for hanging the suspension clamp 7 is installed at the bottom of the pull rod 13.

[0032] A nut 16 for cooperating with an electric wrench is welded and fixed to one end of the screw rod 15 of the vehicle jack 1.

[0033] The lifting method of an auxiliary lifting device for overhead optical cable winding preformed wire of a steel tower in this embodiment includes the following steps:

[0034] 1) The operator on the steel tower places the auxiliary lifting device at an appropriate position on the steel tower, so that the horizontal support rod 5 is directly above the position where the preformed wire is to be installed, and the U-shaped clamping plate 2 wraps around the steel tower angle steel. Tighten the top screw 3 on the U-shaped clamping plate to fix the lifting device to the steel tower.

[0035] 2) Retract the vehicle jack 1 to the lowest position, hang the two turnbuckles on the hanging rings 9 at both ends of the horizontal support rod 5 respectively, and adjust the lengths of the two turnbuckles, so that the suspension clamp 7 is slightly lower than the optical cable, which is convenient for installing the optical cable.

[0036] 3) Remove the connecting bolt between the turnbuckle and the suspension clamp 7, put the two suspension clamps 7 on the optical cable, and reinsert the connecting bolt between the turnbuckle and the suspension clamp 7. Retract the turnbuckle to an appropriate length to make the forces on both sides of the entire lifting device balanced.

[0037] 4) Rotate the screw rod 15 of the vehicle jack with an electric wrench to raise the vehicle jack 1 to a suitable height. The horizontal support rod 5 drives the optical cable through the turnbuckle to keep it at a sufficient distance from the pulley, leaving enough space for winding the preformed wire. Align the fixed point of the optical cable with the center point of the preformed wire, and install the preformed wire according to the installation requirements of the preformed wire.

[0038] 5) After the work of winding the preformed wire is completed, operate the electric wrench to lower the optical cable to the installation position. After installing the optical cable fixing fixture, operate the electric wrench to unload the device, and remove the auxiliary lifting device to complete the entire installation process.

[0039] The entire optical cable lifting process in this embodiment is simple to operate and convenient to install. It improves the working conditions of workers, avoids personal injuries to construction workers, saves labor, reduces the labor intensity of workers, and improves the winding efficiency of the optical cable preformed wire.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An overhead optical cable wrapping pre-twisted wire auxiliary lifting device for a steel tower, characterized in that It includes a vehicle-mounted jack (1) and a U-shaped clamping plate (2) fixed to the bottom of the vehicle-mounted jack (1). The opening of the U-shaped clamping plate (2) is fastened to the iron tower (4) by a setscrew (3). A horizontal support rod (5) is installed at the top of the vehicle-mounted jack (1). A rigging (6) with the same structure is hung at both ends of the horizontal support rod (5). A suspension clamp (7) is hung at the bottom of each of the two riggings (6). The length direction of the suspension clamp (7) is the same as the length direction of the horizontal support rod (5). The horizontal support rod (5) is welded to the top of the vehicle-mounted jack (1) by an angle steel (8). Hanging rings (9) are provided at both ends of the horizontal support rod (5), and the hanging rings (9) are hooked to the hooks (10) at the top of the rigging (6). The rigging (6) is a turnbuckle. The turnbuckle includes a left-handed threaded adjusting rod (11) and a right-handed threaded adjusting rod (12) arranged vertically. Both the left-handed threaded adjusting rod (11) and the right-handed threaded adjusting rod (12) are screwed onto a pull rod (13). The hook (10) is installed at the top of the pull rod (13), and a hanging ring (14) for hanging the suspension clamp (7) is installed at the bottom of the pull rod (13). One end of the lead screw (15) of the vehicle-mounted jack (1) is welded and fixed with a nut (16) for use with an electric wrench.

2. A method for using the overhead optical cable winding pre-twisted wire auxiliary lifting device for a steel tower according to claim 1, characterized in that It includes the following steps: 1) Fixed to the angle steel of the iron tower The operator on the iron tower places the auxiliary lifting device at an appropriate position on the iron tower, so that the horizontal support rod (5) is directly above the position where the preformed wire is to be installed. The U-shaped clamping plate (2) wraps around the angle steel of the iron tower, and the setscrew (3) on the U-shaped clamping plate is tightened to achieve the fixation between the lifting device and the iron tower. 2) Adjust the height of the suspension clamp The vehicle-mounted jack (1) is retracted to the lowest position. The two turnbuckles are respectively hung on the hanging rings (9) at both ends of the horizontal support rod (5). The lengths of the two turnbuckles are adjusted, so that the suspension clamp (7) is slightly lower than the optical cable, which is convenient for installing the optical cable. 3) Install the optical cable Remove the connecting bolt between the turnbuckle and the suspension clamp (7), put the two suspension clamps (7) on the optical cable, and reinsert the connecting bolt between the turnbuckle and the suspension clamp (7). The turnbuckle is retracted to an appropriate length to make the forces on both sides of the entire lifting device balanced. 4) Wind the preformed wire Rotate the lead screw (15) of the vehicle-mounted jack with an electric wrench to raise the vehicle-mounted jack (1) to a suitable height. The horizontal support rod (5) drives the optical cable through the turnbuckle to keep it at a sufficient distance from the pulley, leaving enough space for winding the preformed wire. Align the optical cable fixing point with the center point of the preformed wire, and install the preformed wire according to the installation requirements of the preformed wire. 5) Loosen the optical cable After the work of winding the preformed wire is completed, operate the electric wrench to lower the vehicle-mounted jack, driving the optical cable to fall back to the installation position. After installing the optical cable fixing clamp, fix the optical cable on the iron tower through the optical cable fixing clamp. Operate the electric wrench to unload the vehicle-mounted jack, and remove the auxiliary lifting device to complete the entire installation process.

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