CN104495635A - Hoisting apparatus for construction of 220 KV power transmission line cat-head type tower - Google Patents

Abstract

The hoisting device for the construction of the cat head tower of the 220KV transmission line includes a base on which the first hydraulic cylinder is vertically installed. The upper end of the first hydraulic cylinder is provided with a beam. The cross-section of the road is a rectangular structure, and two telescopic lifting mechanisms symmetrical to the first hydraulic cylinder are provided for horizontal sliding in the slideway. All components of the present invention are made of aluminum alloy material, which is flexible and light, and the length of the two hanging points can be adjusted horizontally, which is suitable for all cat head towers of 220KV transmission lines. Simultaneous hoisting with double hoisting points solves the balance problem in the hoisting process and greatly improves work efficiency. It has strong practicability and is easy to popularize and apply.

Description

Hoisting device for the construction of Maotou Tower of 220KV transmission line

technical field

The invention belongs to the technical field of construction in the electric power industry, and in particular relates to a hoisting device for the construction of a cat head tower of a 220KV transmission line.

Background technique

At present, the overhead ground wire maintenance, replacement of overhead ground wire clips, right-angle hanging plates, etc. The lifter used at that time had a complex structure and poor operability. It could only work on one side of the cat head tower once, and then work on the other side. The construction efficiency was low and the degree of automation was low. Therefore, there is an urgent need to improve existing lifters.

Contents of the invention

In order to solve the deficiencies in the prior art, the present invention provides a hoisting device for cattower construction of a 220KV transmission line with simple structure, easy operation, high degree of automation and high hoisting efficiency.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: the hoisting device for the construction of the cat head tower of 220KV transmission line, comprising a base, the base is vertically provided with a first hydraulic cylinder, the upper end of the first hydraulic cylinder is provided with a crossbeam, and the crossbeam is horizontally arranged, There are left and right transparent slides horizontally inside the beam. The cross-section of the slides is a rectangular structure. There are two telescopic lifting mechanisms that are symmetrical to the first hydraulic cylinder for horizontal sliding in the slides;

The telescopic lifting mechanism includes a telescopic square pipe, a second hydraulic cylinder and a third hydraulic cylinder. The telescopic square pipe is horizontally inserted and slidably connected in the slideway. The outer end of the telescopic square pipe is fixedly connected to the side of the second hydraulic cylinder. The hydraulic cylinder is installed vertically, the upper end of the second hydraulic cylinder is provided with a hook, the top of the beam is provided with a guide hole communicating with the slideway along the length direction, the third hydraulic cylinder is arranged in parallel on the beam, and the power output end of the third hydraulic cylinder passes through the bolt A connecting plate is connected, and the lower end of the connecting plate passes through the guide hole and is fixedly connected with the upper surface of the telescopic square tube.

A set of cooperating contraction limit switches is correspondingly provided between the inner side of the lower part of the second hydraulic cylinder and the top of the outer end of the beam, and a set of cooperating extension limit switches are correspondingly provided between the upper part of the connecting plate and the upper part of the beam at the outer end of the guide hole. limit switch.

A lower reinforcing rib is provided between the lower part of the first hydraulic cylinder and the upper surface of the base, and an upper reinforcing rib is provided between the upper part of the first hydraulic cylinder and the lower surface of the beam.

Adopt the above-mentioned technical scheme, when the present invention is used in work, the base is placed on the transport vehicle, and the transport vehicle is driven to park at the middle position below the cat head tower, and the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are all connected to the transport vehicle Connected to the hydraulic system on the upper body, hang the tools, wires or components that need to be hoisted upwards on the two hooks, first control the first hydraulic cylinder to extend upwards, and if the hooks reach the predetermined position, remove the objects hung on the hooks That’s it; if there is still a certain height, control the two second hydraulic cylinders to extend upwards, and after the hook rises to the predetermined position, remove the hanging object on the hook. If there is still a certain distance in the horizontal direction, respectively Control the extension or shortening of the two third hydraulic cylinders, the third hydraulic cylinder drives the telescopic square pipe through the connecting plate to move horizontally along the slideway, and the second hydraulic cylinder moves horizontally to the designated position along with the telescopic square pipe.

The invention adopts two hooks to lift objects to both sides of the cat head tower at the same time, greatly improving the work efficiency, and adopts the first hydraulic cylinder and the second hydraulic cylinder to lift in sections, so the stability and flexibility are better. And the third hydraulic cylinder drives the telescopic square tube to adjust the hoisting position horizontally, which can adapt to the operation of cat head towers of different sizes and models.

In the present invention, lubricating oil can be injected into the slideway through the guide hole, so as to reduce the resistance of the telescopic square tube during expansion and contraction, reduce energy consumption and prolong the service life.

The setting of the contraction limit switch can prevent the second hydraulic oil cylinder from contacting the crossbeam during the contraction process of the telescopic square tube, and the setting of the extension limit switch can prevent the telescopic square tube from falling off when extending out of the slideway.

The lower rib plate and the upper rib plate can fully improve the connection strength between the first hydraulic oil cylinder and the base and the crossbeam respectively.

The main function of the invention is to lift overhead ground wires. The overhead ground wire is an important guarantee to protect the line from lightning strikes. Under the action of wind force, the overhead ground wire swings and vibrates irregularly for a long time, causing serious wear and tear on the hardware carrying the overhead ground wire. The double lifting point overhead ground wire lifter reduces the labor intensity of operators and improves safety and reliability when inspecting and maintaining the overhead ground wire.

All components of the present invention are made of aluminum alloy material, which is flexible and light, and the length of the two hanging points can be adjusted horizontally, which is suitable for all cat head towers of 220KV transmission lines. Simultaneous hoisting with double hoisting points solves the balance problem in the hoisting process and greatly improves work efficiency. It has strong practicability and is easy to popularize and apply.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the telescopic lifting mechanism in Fig. 1 .

Detailed ways

As shown in Figure 1 and Figure 2, 220KV power transmission line cat head tower construction of the present invention is used for hoisting device, comprises base 1, is vertically provided with first hydraulic cylinder 2 on base 1, and first hydraulic cylinder 2 upper end is provided with crossbeam 3, The crossbeam 3 is arranged horizontally, and the inside of the crossbeam 3 is horizontally provided with a left and right transparent slideway 4. The cross section of the slideway 4 is a rectangular structure, and two telescopic lifting mechanisms symmetrical to the first hydraulic cylinder 2 are provided for horizontal sliding in the slideway 4 5.

The telescopic lifting mechanism 5 includes a telescopic square pipe 7, a second hydraulic cylinder 8 and a third hydraulic cylinder 9. The telescopic square pipe 7 is horizontally inserted and slidably connected in the slideway 4. The outer end of the telescopic square pipe 7 is connected to the second hydraulic cylinder 8. The side part is fixedly connected, the second hydraulic cylinder 8 is vertically arranged, the upper end of the second hydraulic cylinder 8 is provided with a hook 10, the top of the beam 3 is provided with a guide hole 6 communicating with the slideway 4 along the length direction, and the third hydraulic cylinder 9 is arranged in parallel On the beam 3, the power output end of the third hydraulic cylinder 9 is connected with a connecting plate 11 through bolts, and the lower end of the connecting plate 11 passes through the guide hole 6 and is fixedly connected with the upper surface of the telescopic square tube 7.

A set of contraction limit switches 12 that cooperate with each other is correspondingly provided between the inner side of the lower part of the second hydraulic cylinder 8 and the top of the outer end of the beam 3, and a set of mutual cooperation is provided between the upper part of the connecting plate 11 and the upper part of the beam 3 at the outer end of the guide hole 6. Cooperating extension limit switch 13.

A lower rib 14 is provided between the lower part of the first hydraulic cylinder 2 and the upper surface of the base 1 , and an upper rib 15 is provided between the upper part of the first hydraulic cylinder 2 and the lower surface of the beam 3 .

When the present invention is used in work, the base 1 is placed on the transport vehicle, and the transport vehicle is driven to park at the middle position below the cat head tower, and the first hydraulic cylinder 2, the second hydraulic cylinder 8 and the third hydraulic cylinder 9 are all connected to the transport vehicle. Connected to the hydraulic system, hang the tools, wires or components that need to be hoisted upwards on the two hooks 10, first control the first hydraulic cylinder 2 to extend upwards, if the hook 10 reaches the predetermined position, hang the hook 10 The object can be removed; if there is still a certain height, control the two second hydraulic cylinders 8 to extend upwards, and after the hook 10 rises to the predetermined position, the object hung on the hook 10 will be removed. There is still a distance to control the extension or shortening of the two third hydraulic cylinders 9 respectively. The third hydraulic cylinder 9 drives the telescopic square tube 7 through the connecting plate 11 to move horizontally along the slideway 4, and the second hydraulic cylinder 8 expands and contracts with it. The square tube 7 moves horizontally to the designated position.

The present invention adopts two hooks 10 to lift objects to both sides of the cat head tower at the same time, greatly improving the work efficiency, and adopts the first hydraulic cylinder 2 and the second hydraulic cylinder 8 to lift in sections, so the stability and flexibility are better. And drive the telescopic square tube 7 horizontally to adjust the hoisting position by the third hydraulic cylinder 9, so that the operation of the cat head tower with different sizes and models can be adapted.

Lubricating oil can be injected into the slideway 4 through the guide hole 6 in the present invention, so that the resistance when the telescopic square tube 7 is stretched is reduced, energy consumption is reduced, and the service life is prolonged.

The setting of contraction limit switch 12 can avoid that telescopic square pipe 7 contacts with crossbeam 3 in the shrinking process, and the setting of extension limit switch 13 can avoid that telescopic square pipe 7 stretches out slideway 4 and falls off phenomenon.

The lower rib plate 14 and the upper rib plate 15 can fully improve the connection strength between the first hydraulic cylinder 2 and the base 1 and the beam 3 respectively.

Claims (3)

1.220KV transmission line of electricity cat-head transmission tower construction hanging apparatus, it is characterized in that: comprise base, base is vertically provided with the first hydraulic ram, first hydraulic ram upper end is provided with crossbeam, crossbeam is horizontally disposed with, crossbeam inner horizontal is provided with the penetrating slideway in left and right, and the transversal surface of slideway is rectangular configuration, and in slideway, horizontal slip is provided with two flexible lift systems about the first hydraulic ram symmetry;

Described flexible lift system comprises telescopic square tube, the second hydraulic ram and the 3rd hydraulic ram, telescopic square tube level plugs and is slidably connected in slideway, telescopic square tube outer end is fixedly connected with the second hydraulic ram sidepiece, second hydraulic ram is vertically arranged, second hydraulic ram upper end is provided with suspension hook, cross rail top is provided with the pilot hole communicated with slideway along its length, 3rd hydraulic ram is set in parallel on crossbeam, the clutch end of the 3rd hydraulic ram has been bolted connecting plate, and connecting plate lower end is fixedly connected with telescopic square tube upper surface through pilot hole.

2. 220KV transmission line of electricity cat-head transmission tower construction hanging apparatus according to claim 1, it is characterized in that: described second hydraulic ram lower inside is corresponding with between top, crossbeam outer end is provided with one group of contraction limit switch cooperatively interacted, connecting plate top and crossbeam top are corresponding between the place of pilot hole outer end is provided with one group of elongation limit switch cooperatively interacted.

3. 220KV transmission line of electricity cat-head transmission tower construction hanging apparatus according to claim 1 and 2, it is characterized in that: be provided with lower reinforcement gusset between described first hydraulic ram bottom and base upper surface, between the first hydraulic ram top and crossbeam lower surface, be provided with reinforcement gusset.