A ground wire lifting device for a power transmission line and a working method thereof

Abstract

The present invention relates to a ground wire lifting device for a power transmission line, comprising a vertical sleeve positioned on a ground wire cross arm through a clamp, a screw rod coaxially passing through the sleeve, an adjusting nut driven to rotate by a ratchet wrench is screwed on the screw rod above the sleeve, and a hanger for hooking the ground wire is provided at the bottom end of the screw rod. The structure of the ground wire lifting device for a power transmission line is simple.

Description

Technical Field

[0001] The invention relates to a ground wire lifting device for a power transmission line and a working method thereof. Background Art

[0002] Since high-voltage transmission lines are exposed to the outdoor environment for a long time, the ground wire fittings are prone to corrosion and wear due to factors such as climate, terrain, and mechanical vibration. If not handled in time, the ground wire will fall off, causing a serious accident in the transmission line. In order to prevent such accidents, the ground wire fittings need to be replaced in time.

[0003] At present, the method of lifting the ground wire of the "straight tower ground wire cross arm hanging point angle iron is a tower type in the direction of the line" is generally replaced by "short wire jack + hand hoist + long wire jack + U + overhead pulley". This method not only uses a large number of heavy tools and requires a large number of operators, but also the overhead pulley is prone to deformation of the angle iron after being stressed, affecting the safety of the operation. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a ground wire lifting device for a power transmission line and a working method thereof, which is not only simple in structure but also convenient and efficient.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a transmission line ground wire lifting device, including a vertical sleeve positioned on the ground wire cross arm through a clamp, a screw rod coaxially passed through the inside of the sleeve, an adjusting nut driven by a ratchet wrench for rotation is threaded on the screw rod above the sleeve, and a hanger for hooking the ground wire is provided at the bottom end of the screw rod.

[0006] Preferably, the clamp includes a clamping seat symmetrically hinged to the left and right outer peripheral parts of the sleeve through a pin axis, the axial direction of the pin axis is horizontal, and the bottom surface of the clamping seat is a top connection plane for connecting to the top of the two side plates of the ground wire crossbeam. The top connection plane is bolted with a clamping block that is embedded between the two side plates and at least one end of which is connected to the inner wall of one of the side plates.

[0007] Preferably, the clamping blocks are provided with grooves extending along the wide side direction between the two side plates, and the bolts pass through the grooves and are screwed to the bottom surface of the clamping seat.

[0008] Preferably, the top-connecting plane is evenly provided with a plurality of saw teeth along the wide side direction between the two side plates to form a rack, and the top surface of the clamping block is evenly provided with a plurality of saw teeth along the wide side direction between the two side plates to form a rack, and the rack of the clamping block meshes with the rack of the top-connecting plane.

[0009] Preferably, the hanger comprises a closed circular ring fixed at the bottom end of the screw rod, a U-shaped ring is passed through the closed circular ring, and the ring opening of the U-shaped ring is closed by a bolt passed through and a nut on the bolt.

[0010] A working method of a ground wire lifting device for a power transmission line is carried out according to the following steps: (1) a sleeve is placed on a ground wire cross arm of a ground wire to be lifted, so that the sleeve is located above between two side plates; (2) the bottom surfaces of the holders on the left and right sides of the sleeve, i.e., the top contact planes, are in contact with the tops of the two side plates, and the tops of the two side plates support the holders; (3) two clamping blocks are located between the two side plates, and at least one end of each clamping block is in top contact with the inner wall of one of the side plates; (4) the ground wire hook of the ground wire is hooked into a U-shaped ring, wherein the opening and closing of the U-shaped ring is realized by bolts and nuts; (5) under the action of the gravity of the ground wire, the screw rod is pulled downward, the adjusting nut is always in top contact with the top of the sleeve, and the sleeve and the holder are always pressed on the tops of the two side plates; (6) the adjusting nut is rotated by a ratchet wrench, the screw rod rises, and the ground wire is lifted.

[0011] Preferably, the position of the clamping block is adjustable after the bolt is loosened, and after the adjustment is completed, the rack of the clamping block re-engages with the rack of the top-connecting plane.

[0012] Preferably, when the same ends of the blocks are in contact with the inner wall of the same side plate, the rotating adjustment nut will cause the sleeve, the socket, and the block to rotate as a whole, until one end of a block is in contact with the inner wall of one side plate, and the other end of the other block is in contact with the inner wall of the other side plate, and the sleeve, the socket, and the block are restricted from rotating as a whole.

[0013] Preferably, when the adjusting nut rotates, the screw rod will rotate first, but because the closed ring, U-shaped ring, and ground wire hook will be tightly connected to each other after rotating to a certain angle and cannot continue to rotate, and the ground wire does not rotate either, the screw rod will stop rotating thereafter, and the rotation of the adjusting nut will drive the screw rod to rise without rotation.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the structure of the ground wire lifting device for power transmission lines is simple, the ground wire is lifted by a screw rod, the adjusting nut is always connected to the top of the sleeve under the downward pulling force of the ground wire, the sleeve does not move, and the screw rod can be driven up by rotating the adjusting nut to achieve ground wire lifting. The operation process is simplified, and the entire operation only needs one operator to complete it alone.

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of an embodiment of the present invention.

[0017] Figure 2 It is a side view of the connection between the card holder, card block and ground crossarm.

[0018] Figure 3 It is a schematic diagram of the state when the same end of the card block is in contact with the inner wall of the same side plate.

[0019] Figure 4 for Figure 3 Schematic diagram of working status. DETAILED DESCRIPTION

[0020] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description.

[0021] like Figures 1 to 4 As shown, a transmission line ground wire lifting device includes a vertical sleeve 2 positioned on the ground wire cross arm 1 by a clamp, a screw rod 3 is coaxially passed through the sleeve, an adjusting nut 5 driven by a ratchet wrench 4 for rotation is threaded on the screw rod above the sleeve, and a hanger for hooking the ground wire 6 is provided at the bottom end of the screw rod.

[0022] In an embodiment of the present invention, the clamp includes a clamping seat 8 which is symmetrically hinged on the left and right outer peripheral parts of the sleeve through a pin shaft 7. The axial direction of the pin shaft is horizontal. The bottom surface of the clamping seat is a top connection plane for connecting to the top of the two side plates of the ground wire crossbeam. The top connection plane is screwed with bolts 9 to form a clamping block 10 which is embedded between the two side plates and at least one end of which is connected to the inner wall of one of the side plates.

[0023] In the embodiment of the present invention, the clamping blocks are provided with grooves 11 extending along the wide side direction between the two side plates, and the bolts pass through the grooves and are screwed to the bottom surface of the clamping seat.

[0024] In the embodiment of the present invention, the top connecting plane is evenly distributed with a plurality of saw teeth along the wide side direction between the two side plates to form a rack 12, and the top surface of the clamping block is evenly distributed with a plurality of saw teeth along the wide side direction between the two side plates to form a rack, and the rack of the clamping block is meshed with the rack of the top connecting plane.

[0025] In the embodiment of the present invention, the hanger includes a closed ring 13 fixed to the bottom end of the screw rod, a U-shaped ring 14 is passed through the closed ring, and the ring opening of the U-shaped ring is closed by a bolt and a nut 15 on the bolt.

[0026] A working method of a ground wire lifting device for a power transmission line is carried out according to the following steps: (1) a sleeve is placed on a ground wire cross arm of a ground wire to be lifted, so that the sleeve is located above between two side plates; (2) the bottom surfaces of the holders on the left and right sides of the sleeve, i.e., the top contact planes, are in contact with the tops of the two side plates, and the tops of the two side plates support the holders; (3) two clamping blocks are located between the two side plates, and at least one end of each clamping block is in top contact with the inner wall of one of the side plates; (4) a ground wire hook 16 of the ground wire is hooked into a U-shaped ring, wherein the opening and closing of the U-shaped ring is realized by bolts and nuts; (5) under the action of the gravity of the ground wire, the screw rod is pulled down, the adjusting nut is always in top contact with the top of the sleeve, and the sleeve and the holder are always pressed on the tops of the two side plates; (6) the screw rod is raised by the ratchet wrench with the adjusting nut rotating, and the ground wire is lifted.

[0027] In the embodiment of the present invention, the position of the clamping block can be adjusted after the bolt is loosened, and after the adjustment is completed, the rack of the clamping block and the rack of the top-connecting plane are re-engaged.

[0028] In an embodiment of the present invention, when the same ends of the clamping blocks are in contact with the inner wall of the same side plate, the rotating adjustment nut will cause the sleeve, the clamping seat, and the clamping block to rotate as a whole, until one end of a clamping block is in contact with the inner wall of one side plate and the other end of the other clamping block is in contact with the inner wall of the other side plate, and the sleeve, the clamping seat, and the clamping block are restricted from rotating as a whole.

[0029] In the embodiment of the present invention, when the adjusting nut rotates, the screw will rotate first, but because the closed ring, the U-shaped ring, and the ground wire hook will be locked together and cannot continue to rotate after rotating to a certain angle, and the ground wire will not rotate either, the screw will stop rotating thereafter, and the adjusting nut will rotate to drive the screw to rise without rotation. The ground wire fittings can be replaced after the ground wire is lifted. The design is reasonable, easy to carry and install, the operation process has low labor intensity, requires fewer people, has high labor efficiency, has good on-site application effects, and has strong practicality.

[0030] The present invention is not limited to the above-mentioned best implementation mode. Anyone can derive other forms of transmission line ground wire lifting devices and working methods under the enlightenment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A ground wire lifting device for a power transmission line, characterized in that: It includes a vertical sleeve positioned on the ground wire crossarm by a clamp, a screw rod is coaxially passed through the interior of the sleeve, an adjusting nut driven for rotation by a ratchet wrench is screwed on the screw rod above the sleeve, and a hanger for hooking the ground wire is provided at the bottom end of the screw rod; the clamp includes a clamping seat symmetrically hinged on the left and right outer peripheral parts of the sleeve by a pin axis, the axial direction of the pin axis is horizontal, the bottom surface of the clamping seat is a top connection plane for top connection to the top of the two side plates of the ground wire crossarm, and a clamping block is screwed on the top connection plane by bolts for embedding between the two side plates and at least one end of which is top connection with the inner wall of one of the side plates; the clamping block is provided with a groove extending along the wide side direction between the two side plates, and the bolt passes through the groove and is screwed on the bottom surface of the clamping seat; the top connection plane is evenly provided with a plurality of saw teeth to form a rack along the wide side direction between the two side plates, and the top surface of the clamping block is evenly provided with a plurality of saw teeth to form a rack along the wide side direction between the two side plates, and the rack of the clamping block is meshed with the rack of the top connection plane.

2. The ground wire lifting device for a power transmission line according to claim 1, characterized in that: The hanging part comprises a closed circular ring fixed at the bottom end of the screw rod, a U-shaped ring is passed through the closed circular ring, and the ring opening of the U-shaped ring is closed by a passed bolt and a nut on the bolt.

3. A working method of the ground wire lifting device for a power transmission line according to any one of claims 1-2, characterized in that: The following steps are followed: (1) The sleeve is placed on the ground wire crossbar of the ground wire to be lifted, so that the sleeve is located above the two side plates; (2) The bottom surfaces of the holders on the left and right sides of the sleeve, i.e., the top contact planes, are in contact with the tops of the two side plates, and the tops of the two side plates support the holders; (3) The two clamping blocks are located between the two side plates, and at least one end of each clamping block is in top contact with the inner wall of one of the side plates; (4) The ground wire hook of the ground wire is hooked into the U-shaped ring, and the opening and closing of the U-shaped ring is achieved by bolts and nuts; (5) Under the action of the gravity of the ground wire, the screw rod is pulled down, and the adjusting nut is always in top contact with the top of the sleeve, and the sleeve and the holder are always pressed on the tops of the two side plates; (6) The ratchet wrench rotates the adjusting nut, the screw rod rises, and the ground wire is lifted.

4. The working method of the ground wire lifting device for a power transmission line according to claim 3 is characterized in that: After the bolt is loosened, the position of the clamping block can be adjusted. After the adjustment is completed, the rack of the clamping block and the rack of the top contact plane are re-engaged.

5. The working method of the ground wire lifting device for a power transmission line according to claim 3 is characterized in that: When the same ends of the clamping blocks are in contact with the inner wall of the same side plate, the rotating adjusting nut will cause the sleeve, the clamping seat, and the clamping block to rotate as a whole until one end of a clamping block is in contact with the inner wall of one side plate and the other end of the other clamping block is in contact with the inner wall of the other side plate, and the sleeve, the clamping seat, and the clamping block are restricted from rotating as a whole.

6. The working method of the ground wire lifting device for a power transmission line according to claim 3 is characterized in that: When the adjusting nut rotates, the screw rod will rotate first. However, after the closed ring, U-shaped ring, and ground wire hook rotate to a certain angle, they will be tightly connected to each other and cannot continue to rotate. The ground wire also does not rotate. Therefore, the screw rod will stop rotating. As the adjusting nut rotates, the screw rod will rise without rotating.

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