Overhaul device for preventing power transmission line from entering live line by mistake

Abstract

The invention discloses an overhauling device for preventing a power transmission line from entering a live line by mistake, which comprises a rotary rod fixed on an iron tower, one end of the rotary rod is fixed with the rear end of a telescopic rod, the telescopic rod rotates around the rotary rod, a hook is fixed at the front end of the telescopic rod, and a bottom plate is fixed on the iron tower above the rotary rod. A first shaft rod is rotationally arranged between the bottom plate and the connecting plate and is vertically distributed, a second shaft rod is rotationally arranged between the connecting plate and the baffle and is transversely distributed, the weight of the end, close to the telescopic rod, of the baffle is smaller than that of the other end of the baffle, and the baffle is located above the connecting plate and the telescopic rod. The overhauling device for preventing the power transmission line from entering the live line by mistake further comprises a lock used for locking the telescopic rod. Compared with the prior art, the device is simple in structure and can be operated by one hand of an operator, and one operator can independently complete device hanging. And secondly, an operator can only use a maintenance line lock cylinder key to unlock to realize maintenance, and mistaken entry is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of line maintenance tools, and in particular to a maintenance device for preventing a transmission line from mistakenly entering live measurement. Background Art

[0002] At present, when inspecting and maintaining multiple transmission lines, the method of checking double names and color charts is often used to prevent accidental entry into the energized side. The protection form is relatively simple. At the same time, when personnel go down from the crossarm side to the conductor side, they need to complete many steps: ① Retract the bird-proof spikes or temporarily remove them to prevent punctures and scratches; ② The throwing-type personal safety line short-circuits the conductor, which cannot be hung by a novice at one time and requires multiple throwing to install; ③ When going down to the conductor side along the soft ladder, the bird-proof cover blocks the soft ladder from the conductor, making it difficult for personnel to enter and easy to step on air when stepping on the soft ladder; ④ When inspecting hardware or accessories, personnel cannot stand or sit steadily and cannot let go of their hands to work.

[0003] ⑤The maintenance personnel were careless and entered the live side by mistake.

[0004] Therefore, it is necessary to provide a maintenance device for preventing transmission line from accidentally entering live measurement to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and disclose a maintenance device for preventing transmission line from accidentally entering live measurement, so as to solve the problems of safety hazards and cumbersome operation when personnel go down from the crossarm side to the conductor side.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a maintenance device for preventing a transmission line from accidentally entering a live measurement, comprising a slewing rod fixed on an iron tower, one end of the slewing rod being fixed to the rear end of a telescopic rod, the telescopic rod rotating around the slewing rod, a hook being fixed to the front end of the telescopic rod, a base plate being fixed to the iron tower above the slewing rod, a first shaft rod being rotatably arranged between the base plate and the connecting plate, the first shaft rod being vertically distributed, a second shaft rod being rotatably arranged between the connecting plate and the baffle, the second shaft rod being horizontally distributed, the weight of one end of the baffle close to the telescopic rod being less than the weight of the other end, the baffle being located above the connecting plate and the telescopic rod, and the maintenance device for preventing a transmission line from accidentally entering a live measurement also comprises a lock for locking the telescopic rod.

[0007] Preferably, a cylinder is sleeved on the rotating rod, the cylinder rotates around the rotating rod, and the cylinder is fixed to the telescopic rod through an n-shaped piece.

[0008] Preferably, both ends of the rotating rod are provided with external threads, and both ends of the rotating rod are provided with stop nuts at the cylinder.

[0009] Preferably, the connecting plate rotates around the first shaft rod above the bottom plate, and a handle is provided at one end of the connecting plate away from the second shaft rod.

[0010] Preferably, two ear plates are provided on the connecting plate, the second shaft rod is rotatably arranged between the two ear plates, a stop rod is also fixed between the two ear plates, and the stop rod is located on a side of the second shaft rod close to the handle.

[0011] Preferably, the telescopic rod comprises a plurality of square tubes, two adjacent square tubes are slidably arranged, the square tube with the smallest diameter is fixedly connected to the rotating rod, and the square tube with the largest diameter is fixedly connected to the hook.

[0012] Preferably, a lock buckle for preventing the telescopic rod from extending is provided between two adjacent square tubes.

[0013] Preferably, the lock comprises a buckle, one end of which is hinged on the wall of the square tube, and the other end of which cooperates with the end of the square tube inside the square tube; a clamping plate cooperating with the buckle is provided on the square tube with the smallest diameter.

[0014] Preferably, a pull ring is hinged on the free end of the buckle.

[0015] Preferably, the iron tower is provided with a third mounting plate below the slewing rod, a limiting plate is provided above the rear end of the third mounting plate, the lock is fixed below the front end of the third mounting plate, and the lock tongue of the lock cooperates with the limiting plate.

[0016] Compared with the prior art, in the present invention, when the operator climbs the pole tower to the cross-block device, he selects the key of the corresponding lock according to the line to be inspected, and uses the key to unlock it after checking that it is correct, so as to prevent the live side wire from being mistakenly entered. After the key is unlocked, the telescopic rod is rotated, and the rear end of the telescopic rod presses the baffle from top to bottom. After the baffle flips downward to avoid the telescopic rod, it flips upward under the action of gravity to the top of the telescopic rod, and the telescopic rod is released. The rear end of the telescopic rod is blocked by the baffle and cannot rotate. At this time, the front end of the telescopic rod is slightly tilted downward. After the telescopic rod is stretched, it is hung on the wire. The operator can move horizontally to the wire along the device to eliminate the defects of the lower end of the insulator such as the suspension wire clamp. After the defects are eliminated, the telescopic rod is retracted, the connecting plate is rotated to remove the baffle above the telescopic rod, and the telescopic rod is rotated downward to be retracted into the iron tower. The present invention has a simple structure and can meet the needs of the operator's one-handed operation. An operator can independently complete the device hanging without climbing up and down on the cross arm. Secondly, it is safer to use this device. The operator can only use the maintenance line lock cylinder key to unlock and perform maintenance. The color of the device on each side is consistent with the color of the line to prevent accidental entry. Third, the operator sits on the wire and the telescopic rod, which not only keeps the body stable, but also allows more efficient operation. Fourth, maintenance personnel do not need to climb to the cross arm above the wire and then go down to the wire to perform operations. Fifth, there is no need to perform complicated operations. Power outage maintenance operators do not need to hang various auxiliary equipment before performing maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 A structural schematic diagram of another angle of an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A magnified schematic diagram of the structure at center A;

[0020] Figure 4 It is a schematic structural diagram of a buckle according to an embodiment of the present invention;

[0021] Figure 5 It is a schematic structural diagram of a buckle locking a square tube according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Angle iron, 2. Rotating mechanism, 3. Telescopic rod, 4. Hook, 5. Limiting mechanism, 6. Lock, 7. Third mounting plate, 8. Limiting plate, 21. Rotating rod, 22. Cylinder, 23. N-shaped part, 24. Stop nut, 31. Square tube, 32. Lock buckle, 321. Buckle ring, 322. Card plate, 33. Pull ring, 5.1 bottom plate, 52. Connecting plate, 53. First shaft rod, 54. Baffle, 55. Second shaft rod, 56. Handle, 57. Ear plate, 58. Stop rod, 61. Lock tongue. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0025] The following is combined with Figure 1 and attached Figure 2The present invention is further described. A maintenance device for preventing a transmission line from accidentally entering a live line includes a slewing rod 21 fixed to an iron tower. Specifically, the slewing rod 21 is fixed to an angle iron 1 of the iron tower. One end of the slewing rod 21 is fixed to the rear end of a telescopic rod 3. The telescopic rod 3 rotates around the slewing rod 21. A hook 4 is fixed to the front end of the telescopic rod 3. When maintenance is required, a personal safety line is hung on the telescopic rod 3 near the hook 4. A bottom plate 51 is fixed to the iron tower above the slewing rod 21. A rotation arrangement is provided between the bottom plate 51 and the connecting plate 52. There is a first shaft 53, the first shaft 53 is vertically distributed, a second shaft 55 is rotatably arranged between the connecting plate 52 and the baffle 54, the second shaft 55 is horizontally distributed, the weight of the end of the baffle 54 close to the telescopic rod 3 is less than the weight of the other end, the baffle 54 is located above the connecting plate 52 and the telescopic rod 3, under the action of gravity, the end of the baffle 54 away from the telescopic rod 3 will fall on the connecting plate 52, and the maintenance device for preventing the transmission line from accidentally entering the live measurement also includes a lock 6 for locking the telescopic rod 3, and the lock 6 is arranged one by one with the wire. An implementation method of the lock 6: the lock 6 is arranged on the rotating rod 21, and is used to lock the telescopic rod 3 so that it cannot rotate around the rotating rod 21. In the present invention, when the operator climbs the pole tower to the device, he selects the key of the corresponding lock 6 according to the line to be repaired, and uses the key to unlock it after checking that it is correct, so as to prevent the live side wire from being accidentally entered. After the key is unlocked, the telescopic rod 3 is rotated, and the rear end of the telescopic rod 3 presses the right end of the baffle 54 from top to bottom. The right end of the baffle 54 flips downward to avoid the telescopic rod 3 and then flips upward under the action of gravity to the top of the telescopic rod 3. The telescopic rod 3 is released, and the rear end of the telescopic rod 3 is blocked by the right end of the baffle 54 and cannot rotate. At this time, the front end of the telescopic rod 3 is slightly tilted downward. After the telescopic rod 3 is stretched, it is hung on the wire. The operator can move horizontally along the telescopic rod 3 to the wire to eliminate the defects of the lower end of the insulator such as the suspension wire clamp. During the operation, the operator can sit astride the connection between the wire and the telescopic rod 3. This design can effectively maintain body balance, make it more convenient to carry out maintenance work, and save the physical strength of the operator. Different from previous maintenance, the use of this device can not only save the physical strength of the operator, avoiding going from the cross arm to the wire, but also does not need to install personal safety lines, hang small soft ladders, remove bird-proof spikes, etc., which is conducive to improving the efficiency of maintenance work. After the defect is eliminated, the telescopic rod 3 is retracted, the connecting plate 52 is rotated to remove the baffle 54 above the telescopic rod 3, and the telescopic rod 3 is rotated downward and retracted into the iron tower. The present invention has a simple structure and can meet the needs of one-handed operation by operators, thereby facilitating operators to work on the iron tower.

[0026] Specifically, the operator stretches the unlocked telescopic rod 3 toward the power-off conductor side, makes the hook 4 on the telescopic rod 3 reliably contact with the conductor, and checks the sealing rope stopping device before moving toward the conductor under the protection of the safety belt.

[0027] Specifically, the device can be used only after the grounding terminal of the personal safety wire at the front end of the telescopic rod 3 is reliably grounded.

[0028] As another embodiment of the present invention: a cylinder 22 is sleeved on the rotating rod 21, the rotating rod 21 is inserted into the cylinder 22, the cylinder 22 rotates around the rotating rod 21, and the cylinder 22 is fixed to the telescopic rod 3 through an n-shaped piece 23. Bolts are respectively provided on both sides of the n-shaped piece 23, and the bolts are threadedly connected to the telescopic rod 3, so that the telescopic rod 3 and the rotating rod 21 are fixed together. This structural design is simple and can quickly fix the telescopic rod 3 on the cylinder 22.

[0029] As another embodiment of the present invention: Figure 3 External threads are provided at both ends of the rotating rod 21 , and stop nuts 24 are provided at both ends of the cylinder 22 of the rotating rod 21 , and the stop nuts 24 prevent the cylinder 22 from moving horizontally on the rotating rod 21 .

[0030] An implementation method of fixing the slewing rod 21 on the iron tower: a first mounting plate is fixed to both ends of the slewing rod 21, and the first mounting plate is fixed to the angle iron 1 on the iron tower by bolts. The slewing rod 21, the cylinder 22, the n-shaped member 23, the stop nut 24 and the first mounting plate constitute the rotating mechanism 2. In the present invention, the rotating mechanism 2 has a simple structure and is easy to manufacture.

[0031] As another embodiment of the present invention: the connecting plate 52 rotates around the first shaft 53 above the bottom plate 51, and a handle 56 is provided at one end of the connecting plate 52 away from the second shaft 55. The handle 56 is provided to facilitate the rotation of the connecting plate 52 so that the baffle 54 is located directly above the telescopic rod 3 or avoids the telescopic rod 3.

[0032] As another embodiment of the present invention: the first shaft rod 53 is fixedly connected to the connecting plate 52 , and the first shaft rod 53 passes through the bottom plate 51 and is threadedly connected to the nut.

[0033] As another embodiment of the present invention: two ear plates 57 are provided on the connecting plate 52, the second shaft rod 55 is rotatably set between the two ear plates 57, and a stop rod 58 is also fixed between the two ear plates 57. The stop rod 58 is located on the side of the second shaft rod 55 close to the handle 56. The design of the stop rod 58 ensures that the rotation angle of the baffle 54 is less than 90°.

[0034] As another embodiment of the present invention: nuts are respectively provided at both ends of the second shaft rod 55 , and the second shaft rod 55 is restricted on the ear plate 57 by the nuts.

[0035] An implementation method of fixing the bottom plate 51 to the iron tower: a second mounting plate is fixed to one end of the bottom plate 51 , and the second mounting plate is fixed to the iron tower by bolts, and two bolts on the second mounting plate are respectively distributed on the upper and lower sides of the bottom plate 51 .

[0036] The bottom plate 51, the connecting plate 52, the first shaft 53, the baffle plate 54, the second shaft 55, the handle 56, the ear plate 57, the stop rod 58 and the second mounting plate constitute the limiting mechanism 5. In the present invention, the limiting mechanism 5 has a simple structure and is easy to manufacture.

[0037] As another embodiment of the present invention: the telescopic rod 3 includes a plurality of square tubes 31, which are designed to facilitate operators to walk on them. Two adjacent square tubes 31 are slidably arranged, the square tube 31 with the smallest diameter is fixedly connected to the rotating rod 21, and the square tube 31 with the largest diameter is fixedly connected to the hook 4. Specifically, the square tube 31 is a carbon steel seamless steel pipe, which has iron as the main element and a carbon content of generally less than 2.0%, and has good strength, plasticity and toughness. The telescopic rod 3 is 2.5 meters long after being stretched, and its bearing capacity can reach 230KG, which meets the bearing capacity standard of operators.

[0038] Specifically, the telescopic rod 3 is provided with a personal safety line clamp at the hook 4, which is made of aluminum alloy and integrated with the personal safety in the square tube 31. When the wire is contacted and sealed, the personal safety line is installed synchronously and the operator can start work.

[0039] As another embodiment of the present invention, a lock buckle 32 for preventing the telescopic rod 3 from extending is provided between two adjacent square tubes 31. After the telescopic rod 3 is retracted, the two adjacent square tubes 31 are locked by the lock buckle 32. When the telescopic rod 3 is rotated to a vertical posture, sliding between the square tubes 31 is prevented.

[0040] As another embodiment of the present invention: the lock buckle 32 includes a buckle ring 321, one end of which is hinged on the wall of the square tube 31, and the other end of which is matched with the end of the square tube 31 inside it; a clamping plate 322 matched with the buckle ring 321 is provided on the square tube 31 with the smallest diameter. Figure 5 When the free end of the buckle 321 is placed on the end of the inner square tube 31 or on the clamping plate 322, the two square tubes 31 cannot be pulled apart from each other. This structural design makes it convenient for operators to pull apart the buckle 321 or buckle the buckle 321 with one hand.

[0041] As another embodiment of the present invention: the hinged end of the buckle 321 is lower than the other end. Through this structural design, the locking effect of the lock buckle 32 can be better.

[0042] As another embodiment of the present invention: Figure 4 A pull ring 33 is hinged on the free end of the buckle ring 321 , and the design of the pull ring 33 makes it convenient for operators to pull open the buckle ring 321 .

[0043] As another embodiment of the present invention: the iron tower is provided with a third mounting plate 7 below the slewing rod 21, a limiting plate 8 is provided above the rear end of the third mounting plate 7, the lock 6 is fixed below the front end of the third mounting plate 7, and the lock tongue 61 of the lock 6 cooperates with the limiting plate 8. When the lock 6 is opened, the lock tongue 61 rotates downward, the telescopic rod 3 rotates downward to fit with the limiting plate 8, and then the lock 6 is closed, the lock tongue 61 rotates upward to clamp the telescopic rod 3 between the lock tongue 61 and the limiting plate 8.

[0044] Specifically, the lock 6 is a triangular telescopic lock or a quadrangular telescopic lock.

[0045] The present invention has a simple structure and can be operated with one hand by the operator. One operator can independently complete the installation of the device without climbing up and down the cross arm. Secondly, it is safer to use this device, and the operator can only use the maintenance line lock cylinder key to unlock and carry out maintenance. The color of the device on each side is consistent with the color of the line color code to prevent accidental entry. Third, the operator sits on the conductor and the telescopic rod 3, which not only keeps the body stable, but also enables more efficient operation. Fourth, maintenance personnel do not need to climb to the cross arm above the conductor and then go down to the conductor to perform operations. Fifth, there is no need to perform complicated operations, and power outage maintenance operators do not need to hang up various auxiliary equipment before performing maintenance.

[0046] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A maintenance device for preventing transmission line from accidentally entering live measurement, characterized in that: It includes a slewing rod fixed on the iron tower, one end of the slewing rod is fixed to the rear end of the telescopic rod, the telescopic rod rotates around the slewing rod, a hook is fixed to the front end of the telescopic rod, and the iron tower is fixed with a base plate above the slewing rod, a first shaft rod is rotatably arranged between the base plate and the connecting plate, the first shaft rod is vertically distributed, a second shaft rod is rotatably arranged between the connecting plate and the baffle, the second shaft rod is horizontally distributed, the weight of one end of the baffle close to the telescopic rod is less than the weight of the other end, the baffle is located above the connecting plate and the telescopic rod, and the maintenance device for preventing the transmission line from accidentally entering the live measurement also includes a lock for locking the telescopic rod.

2. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 1 is characterized in that: A cylinder is sleeved on the rotating rod, and the cylinder rotates around the rotating rod. The cylinder is fixed to the telescopic rod through an n-shaped piece.

3. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 2 is characterized in that: External threads are arranged at two ends of the rotating rod, and stop nuts are arranged at two ends of the cylinder of the rotating rod.

4. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 1 is characterized in that: The connecting plate rotates around the first shaft rod above the bottom plate, and a handle is provided at one end of the connecting plate away from the second shaft rod.

5. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 4 is characterized in that: The connecting plate is provided with two ear plates, the second shaft rod is rotatably arranged between the two ear plates, a stop rod is also fixed between the two ear plates, and the stop rod is located on a side of the second shaft rod close to the handle.

6. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 1 is characterized in that: The telescopic rod comprises a plurality of square tubes, two adjacent square tubes are slidably arranged, the square tube with the smallest diameter is fixedly connected to the rotating rod, and the square tube with the largest diameter is fixedly connected to the hook.

7. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 6 is characterized in that: A lock buckle for preventing the telescopic rod from extending is arranged between two adjacent square tubes.

8. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 7 is characterized in that: The lock comprises a buckle ring, one end of which is hinged on the wall of the square tube, and the other end of which matches with the end of the square tube inside the square tube; a clamping plate matching with the buckle ring is arranged on the square tube with the smallest diameter.

9. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 8, characterized in that: A pull ring is hinged on the free end of the buckle.

10. The maintenance device for preventing transmission line from mistakenly entering live measurement according to claim 1, characterized in that: The iron tower is provided with a third mounting plate below the slewing rod, a limiting plate is provided above the rear end of the third mounting plate, the lock is fixed below the front end of the third mounting plate, and the lock tongue of the lock cooperates with the limiting plate.

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