Auxiliary device for overhead line wire to cross obstacle

Abstract

The utility model belongs to the technical field of power construction, and discloses an overhead line lead obstacle crossing auxiliary device, which comprises a connecting rope, a fixing unit and a control unit, the fixing unit comprises a fixed end bidirectional eye pulley and a load-bearing rope, the load-bearing rope is arranged in the fixed end bidirectional eye pulley in a penetrating manner, and the control unit is connected with the connecting rope. The control unit comprises a control end two-way eye pulley, a traction rope and an auxiliary control rope, the traction rope is arranged in the control end two-way eye pulley in a penetrating mode and can be fixedly connected with an overhead conductor, and the auxiliary control rope is connected with the control end two-way eye pulley; and two ends of the connecting rope are respectively connected with the fixed end bidirectional eye pulley and the control end bidirectional eye pulley. The device can be hung above an obstacle, and an overhead conductor penetrates through the two second bidirectional pulleys and keeps a safe distance from the obstacle, so that the obstacle-crossing construction is realized, the efficiency is improved, and the potential safety hazard is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power construction, and particularly relates to an auxiliary device for an overhead line conductor to cross an obstacle. Background Technique

[0002] Generally, the distance between two poles of a 35 kV overhead line is 200 - 600 meters. Currently, the normal construction method is to realize the laying and installation of the overhead line conductor through multiple traction ropes. However, in actual engineering applications, the laying and installation of the conductor are often affected due to ground obstacles or existing overhead lines that cannot be avoided. For such problems, the traditional method usually requires setting up avoidance frames or multiple truck cranes for auxiliary operations, which is inconvenient for construction operations. Especially in mountainous valleys, there are adverse factors such as poor terrain conditions, inconvenient operation of construction machinery or inability to reach, low installation efficiency, and high safety risks. The quality and safety of the project construction will be difficult to guarantee, affecting the overall installation acceptance qualification rate.

[0003] For example, in the patent document with the publication number: CN1042988C, a shielded high-voltage overhead line is disclosed. By erecting the line on a support pole, this method requires multiple truck cranes for operation, with inconvenient operation at the same time, and also requires setting up support poles, which is time-consuming and laborious and needs to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to provide an auxiliary device for an overhead line conductor to cross an obstacle. This device can be hung vertically above the obstacle, and the overhead conductor passes through two second double-direction pulleys, maintaining a safe distance from the obstacle, thereby realizing the construction of crossing the obstacle, improving the installation efficiency and the quality of project construction, and reducing potential safety hazards.

[0005] The technical solution adopted by the utility model is an auxiliary device for an overhead line conductor to cross an obstacle, including a connecting rope, a fixing unit, and a control unit. The fixing unit includes a fixed-end double-direction eye block and a load-bearing rope, and the load-bearing rope is threaded through the fixed-end double-direction eye block. The control unit includes a control-end double-direction eye block, a traction rope, and an auxiliary control rope. The traction rope is threaded through the control-end double-direction eye block and can be fixedly connected to the overhead conductor. The auxiliary control rope is connected to the control-end double-direction eye block, and both ends of the connecting rope are respectively connected to the fixed-end double-direction eye block and the control-end double-direction eye block.

[0006] Furthermore, locking rings are arranged at both ends of the connecting rope.

[0007] Furthermore, the fixed-end double-direction eye block includes a fixed-end frame and two first double-direction pulleys. The two first double-direction pulleys are rotatably installed in the fixed-end frame, and the load-bearing rope is threaded between the two first double-direction pulleys.

[0008] Further, the control end bidirectional eye pulley includes a control end frame and two second bidirectional pulleys. The two second bidirectional pulleys are rotatably installed in the control end frame, and the traction rope is threaded between the two second bidirectional pulleys and fixedly connected to the overhead conductor.

[0009] Further, a fixed end sling is provided at the bottom end of the fixed end frame, and the fixed end sling can be connected to the locking ring.

[0010] Further, a first control end sling is provided at the top end of the control end frame, and the first control end sling can be connected to the locking ring.

[0011] Further, a second control end sling is provided at the bottom end of the control end frame, and the auxiliary control rope is threaded through the second control end sling.

[0012] The beneficial effects of the present utility model are as follows:

[0013] In this device, the load-bearing rope cooperates with the fixed end bidirectional eye pulley to lift the whole device. Then, the auxiliary control rope is fixed on both sides of the obstacle to ensure that the whole device does not move during the traction process of the overhead conductor and always hangs vertically above the obstacle. The overhead conductor passes through the two second bidirectional pulleys and keeps a safe distance from the obstacle. Then, the overhead conductor is driven to move through the traction rope, so as to realize the construction across the obstacle, improve the efficiency, reduce the safety hazards, save the construction cost and improve the engineering installation quality at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Description of the reference numerals: 1, connecting rope; 2, locking ring; 3, fixed end frame; 4, first bidirectional pulley; 5, fixed end sling; 6, second bidirectional pulley; 7, control end frame; 8, second control end sling; 9, auxiliary control rope; 10, traction rope; 11, overhead conductor; 12, load-bearing rope; 13, first control end sling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the technical solutions of the present utility model will be further described in detail below with reference to the drawings.

[0017] Such as Figure 1As shown in the figure, an auxiliary device for an overhead line conductor to cross an obstacle provided by the utility model includes a connecting rope 1, a fixing unit and a control unit. The fixing unit includes a fixed-end double-eye pulley and a load-bearing rope 12. The load-bearing rope 12 is threaded through the fixed-end double-eye pulley. The control unit includes a control-end double-eye pulley, a traction rope 10 and an auxiliary control rope 9. The traction rope 10 is threaded through the control-end double-eye pulley and can be fixedly connected to the overhead conductor 11. The auxiliary control rope 9 is connected to the control-end double-eye pulley. Both ends of the connecting rope 1 are respectively connected to the fixed-end double-eye pulley and the control-end double-eye pulley.

[0018] The fixed-end double-eye pulley includes a fixed-end frame 3 and two first double pulleys 4. The two first double pulleys 4 are rotatably installed in the fixed-end frame 3 and there is a gap between them. The load-bearing rope 12 is threaded between the two first double pulleys 4.

[0019] The control-end double-eye pulley includes a control-end frame 7 and two second double pulleys 6. The two second double pulleys 6 are rotatably installed in the control-end frame 7 and there is a gap between them. The traction rope 10 is threaded between the two second double pulleys 6 and is fixedly connected to the overhead conductor 11.

[0020] Locking rings 2 are provided at both ends of the connecting rope 1. A fixed-end hanging ring 5 is provided at the bottom end of the fixed-end frame 3, and the fixed-end hanging ring 5 can be connected to the locking ring 2. A first control-end hanging ring 13 is provided at the top end of the control-end frame 7, and the first control-end hanging ring can be connected to the locking ring 2. A second control-end hanging ring 8 is provided at the bottom end of the control-end frame 7, and the auxiliary control rope 9 is threaded through the second control-end hanging ring 8.

[0021] Preferably, the total length of the device is 1600 - 2000 mm. The connecting rope 1 is a Dyneema load-bearing rope, 1.5 m long and 20 mm in diameter. The Dyneema load-bearing rope has better load-bearing effect compared with other steel strands, steel pipes, etc., is not easy to loosen, and is more convenient to carry and operate.

[0022] Before the operation of the overhead line conductor, first adjust the load-bearing rope 12 and the traction rope 10 to an appropriate diameter through multiple tractions according to the conventional method. It should be noted that after the last adjustment is completed, fix the two ends of the load-bearing rope 12 firmly after threading the load-bearing rope 12 through the fixed-end double-eye pulley, connect the traction rope 10 to the overhead conductor 11 after threading it through the control-end double-eye pulley, thread the auxiliary control rope 9 through the second control-end hanging ring 8, and then perform the traction.

[0023] The specific working process of this device is as follows: First, pass the load-bearing rope 12 through between the two first double pulleys 4 (during construction, at least two auxiliary devices need to be passed through, and the number of auxiliary devices should be increased according to the increase in the range of obstacles), and firmly fix both ends of the load-bearing rope 12. Then, pass the traction rope 10 through between the second double pulleys 6 and connect and fix it to the overhead conductor 11. Next, pass the auxiliary control rope 9 out through the second control end hanging ring 8. Then, start to tow the auxiliary device to near the obstacle, and fix the auxiliary control rope 9 on both sides of the obstacle to ensure that the auxiliary device does not move during the traction of the conductor and always hangs above the obstacle. Since the overhead conductor 11 passes through between the second double pulleys 6 and maintains a certain safety distance from the obstacle, it is ensured that the overhead conductor 11 will never sag above the obstacle. Finally, carry out the conductor traction work again until the overhead conductor is towed to another iron tower and fixed, then the construction of the overhead line conductor crossing the obstacle can be completed, improving the construction efficiency, reducing the safety risk, saving the construction cost, and at the same time improving the engineering installation quality.

[0024] As mentioned above, the above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An overhead line conductor crossing obstacle auxiliary device, characterized in that: It includes a connecting rope, a fixing unit and a control unit. The fixing unit includes a fixed-end two-way eye pulley and a load-bearing rope. The load-bearing rope is passed through the fixed-end two-way eye pulley. The control unit includes a control-end two-way eye pulley, a traction rope and an auxiliary control rope. The traction rope is passed through the control-end two-way eye pulley and can be fixedly connected to the overhead wire. The auxiliary control rope is connected to the control-end two-way eye pulley. Both ends of the connecting rope are respectively connected to the fixed-end two-way eye pulley and the control-end two-way eye pulley.

2. The overhead line conductor crossing obstacle auxiliary device according to claim 1, characterized in that: Both ends of the connecting rope are provided with locking rings.

3. The overhead line conductor crossing obstacle auxiliary device according to claim 2, characterized in that: The fixed-end bidirectional eye pulley comprises a fixed-end frame and two first bidirectional pulleys, wherein the two first bidirectional pulleys are rotatably mounted in the fixed-end frame, and the load-bearing rope is passed between the two first bidirectional pulleys.

4. The overhead line conductor crossing obstacle auxiliary device according to claim 2, characterized in that: The control end bidirectional eye pulley comprises a control end frame and two second bidirectional pulleys, the two second bidirectional pulleys are rotatably mounted in the control end frame, the traction rope is passed between the two second bidirectional pulleys and is fixedly connected to the overhead wire.

5. The overhead line conductor crossing obstacle auxiliary device according to claim 3, characterized in that: A fixed end lifting ring is arranged at the bottom end of the fixed end frame, and the fixed end lifting ring can be connected with a locking ring.

6. The overhead line conductor crossing obstacle auxiliary device according to claim 4, characterized in that: A first control end lifting ring is arranged at the top of the control end frame, and the first control end lifting ring can be connected with the locking ring.

7. The overhead line conductor crossing obstacle auxiliary device according to claim 4, characterized in that: A second control end lifting ring is arranged at the bottom end of the control end frame, and the auxiliary control rope is passed through the second control end lifting ring.

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