CN108110674A - A kind of transmission line of electricity major diameter tackle pulley opening and closing structure - Google Patents

Abstract

The invention relates to an opening and closing structure of a large-diameter pulley block of a power transmission line. The structure of the large-diameter block block includes an upper beam, a fixed column, an opening column, a pulley, and an opening and closing assembly. The upper end and the upper end of the open column, a plurality of pulleys are installed between the fixed column and the middle part of the open column, and an opening and closing assembly is installed between the upper end of the open column and the upper beam. The invention can improve the safety degree during work, reduce the work intensity, shorten the opening and closing time during work, and save labor.

Description

An Opening and Closing Structure of Large-diameter Pulley Blocks for Transmission Lines

technical field

The invention relates to the construction field of high-voltage transmission lines above 110kV, in particular to an opening and closing structure of a large-diameter pulley block of a transmission line.

Background technique

In the process of laying out the wires, high-altitude operations are required. Open and close the large-diameter block block hanging on the pole tower. The traction rope used for pulling the lead is introduced into the large-diameter block and the lead is exported outside the large-diameter block. The "Structure Device for Opening and Closing the Large-diameter Pulley Group of Transmission Lines" is applied in this process.

When setting out high voltage transmission lines above 110kV, it is necessary to use large diameter pulley block to complete. During work, it is necessary to introduce the guide ropes of the large-diameter block blocks hung on each base tower, and then close the large-diameter block blocks. After the setting-out work is completed, the large-diameter block block is opened and then placed on the ground. Each group of large-diameter blocks needs to be opened and closed once in high altitude.

At present, two methods are usually used for the opening and closing of large-diameter tackle groups during high-altitude operations: ①Use a tool of 5 tons to reverse the chain and use the tower beam to lift the opened large-diameter tackle group side column, and carry out the operation with the large-diameter tackle group upper beam. Pin link. This closes the large diameter block. With the completion of the setting-out work, the large-diameter block block is opened in the same way. Remove the block block with large diameter and drop it to the ground. In this high-altitude operation, at least 2-3 people are required to complete the work. The work intensity is high and the time is long, and the tools used (5 tons of chains, 2 wire buckles, and 2 U rings with a total weight of about 40kg) are heavy. , Low security. Inconvenient to operate. ② Use the motorized winch mill under the tower to pass the steel wire rope through the turning pulley on the tower, and lift the side column of the large-diameter block block for opening and closing operations. Adopt this method to need two people to work on pole tower, and also will have ground personnel to cooperate, need the use of machinery simultaneously.

After searching and searching, it does not belong to the prior art; nor does any unit or individual have the same invention or application for the invention. Moreover, this structure not only changes the stress points of the open and close large-diameter pulley blocks, but also uses special tools. Has outstanding substantive features and notable progress. It is completely different from the existing technology, simple and easy to operate, and can be widely used in the construction of transmission lines. The transition between poles and towers is extremely convenient. After being popularized, it has wide application prospects and economic effects.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art, and provide a large-diameter pulley block opening and closing structure for a transmission line that is firm and reliable in installation, convenient in dismantling, and reliable in use.

The present invention solves its technical problem and realizes by taking the following technical solutions:

An opening and closing structure of a large-diameter pulley block for a power transmission line. The structure of the large-diameter block block includes an upper beam, a fixed column, an opening column, a pulley, and an opening and closing assembly. On the upper end of the column, a plurality of pulleys are installed between the fixed column and the middle part of the open column. It is characterized in that: an opening and closing assembly is installed between the upper end of the open column and the upper beam.

The opening and closing assembly includes an extension plate, a connecting hanging plate, an adjusting pin, a lead screw and an adjusting nut. An extending plate is fixed on the upper end of the opening column, and a lower end of the connecting hanging plate is hinged on one side of the upper part of the extending plate. The upper end of the extension plate is made with a pin hole and is equipped with an adjusting pin, and the upper beam is made with a pin hole matching the adjusting pin; the other side of the upper part of the extension plate is hinged with one end of the screw, and the middle part of the screw can pass through the upper beam. end, and an adjusting nut is engaged and installed on the lead screw above the upper beam.

Moreover, the width of the extension plate is greater than the width of the opening column.

Moreover, the other end of the lead screw is fixedly equipped with a lifting ring.

Moreover, the end of the upper beam used for installing and fitting the lead screw is fixed/made into a plug-in open slot, and the lead screw can be swung into or out of the upper beam from the side of the plug-in open slot.

Moreover, the connecting hanging board is a two-piece structure, and the two connecting hanging boards with the same structure are symmetrically arranged at the front and rear ends of the upper beam.

Moreover, evenly distributed reinforcement rings are installed at the pin holes at the top of the connecting hanging plate.

Moreover, solid rectangular steel blocks are welded and reinforced between the open column and the extension plate.

Moreover, the upper end surface of the plug-in open slot is an adjustment platform, on which projections are installed.

Advantage and positive effect of the present invention are:

1. The present invention can improve the safety level during work: because the high-altitude operation area becomes smaller, the high-altitude cross operation is reduced. The force point when the large-diameter block block is opened and closed has been changed. The force of the original tower beam and the side column of the large-diameter tackle group is changed to the force of the steel plate beam of the large-diameter tackle group and the side column of the large-diameter tackle group, and the shaking of the large-diameter tackle group in the high altitude is reduced.

2. The present invention reduces the work intensity: because the present invention only needs a wrench to complete, the original participating tools are not needed, saving transportation, and the vertical transportation of climbing poles and towers is very light and convenient.

3. The present invention shortens the opening and closing time during work: due to the reduction of construction procedures compared with the original one, the operation is simple, so the time is greatly compressed.

4. The present invention saves labor: only one operator is needed to complete the entire process by adopting the present invention, which saves manpower input, eliminates the use of machinery, and reduces consumption.

5. Some components of the device of the present invention are connected with large-diameter block blocks, so there is no risk of separation and falling of individual components during operation, and the occurrence of falling objects during high-altitude operations is kept, thereby further improving the safety of the construction process.

Description of drawings

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

Fig. 2 is the right view of Fig. 1;

Fig. 3 is a schematic diagram of a usage state of Fig. 1;

Fig. 4 is a schematic diagram of another usage state of Fig. 1;

Fig. 5 is a partially enlarged schematic diagram of the opening and closing assembly.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

An opening and closing structure of a large-diameter block block for a power transmission line. The structure of the large-diameter block block includes an upper beam 1, a fixed column 11, an opening column 9, a pulley 10, and an opening and closing assembly. , the upper end of the open column is installed on the other lateral end of the upper beam, and a beam (not shown) is connected between the fixed column and the middle part of the open column, and a plurality of pulleys are installed on the upper limit of the beam;

The innovation point of the present invention is:

An opening and closing assembly is installed between the upper end of the opening column and the upper beam. The specific structure of the opening and closing assembly is shown in Figures 1 to 4. The opening and closing assembly includes an extension plate 8, a connecting hanging plate 5, an adjustment pin 2, a wire Bar 6 and adjusting nut 4 are fixedly equipped with an extension plate at the upper end of the opening column. The width of the extension plate is greater than the width of the opening column. There are pin holes and adjusting pins are installed, and the upper beam is formed with pin holes 13 matching the adjusting pin holes;

The other side of the upper part of the extension plate is hinged with a pressure bearing bracket 7, the upper end of the pressure bearing bracket is hinged with one end of the lead screw, and the other end of the lead screw is fixed with a lifting ring 3, which can be used with a crane as required to facilitate large-scale travel. The opening and closing operation of the amplitude;

The middle part of the screw can pass through the end of the upper beam, and an adjusting nut 4 is engaged on the screw above the upper beam. Turning the adjusting nut can adjust the screw to move up and down, thereby tightening or releasing the upper beam and the upper beam. Opening column: Through the interaction between the beams and columns of the large-diameter block block itself, the upper and lower ranges of the opening column are adjusted, so that the connecting hanging plate can be loosened for opening and closing.

Referring to shown in accompanying drawing 2, be used for installing the upper crossbeam end that cooperates to install lead screw and fix/make plug-in type opening groove 12, leading screw can swing and insert or break away from the upper crossbeam by the side of this plug-in type open groove.

The connecting hanging plate 5 is a two-piece structure, and the two connecting hanging plates with the same structure are symmetrically arranged on the front and rear ends of the upper beam, and jointly bear the force to ensure the supporting strength; The reinforcement ring prolongs the service life, and the reinforcement process does not change the stress state and strength of the original large-diameter block block.

The opening column and the extension plate are reinforced, and solid rectangular steel blocks are welded firmly.

Referring to the accompanying drawing 5, the upper end surface of the plug-in open slot is an adjustment platform, and a bump 14 is installed on the adjustment platform as a protection positioning structure for the adjustment platform.

This structure is modified on the basis of large-diameter block beams and side columns. A part of the original large-diameter block upper beam steel plate is extended at one end, and the upper end of the original side columns is designed as a hanging plate connection. A part of the side column extends outward to form a lower hinge. The socket plane of the beam head extended from the upper cross beam is connected by a lead screw and a fastening bolt at the upper end.

It works like this:

After the work starts, the inner side connects the hanging plate to work, and the outer leading screw opens. Place the traction rope between the lead screw and the connecting hanging plate, and this position is used as a transition zone.

Close the lead screw and use the fastening bolts at the upper end to adjust the vertical range of the side column of the large-diameter tackle group, so that the lead screw can bear the weight of the tackle and loosen the connecting bolts on the inner connecting plate;

Disassemble the connecting hanging plate and guide the traction rope into the block, then restore it, and reinstall the connecting hanging plate.

Loosen the lead screw bolts to make the large-diameter block block work normally, and complete the whole process of the traction rope entering the block block, and the whole process is smooth and safe.

This structure can completely replace the use of the original 5-ton down chain and steel wire buckle, replace the use of machinery, and reduce the investment of operators.

Although the embodiments and drawings of the present invention are disclosed for the purpose of illustration, those skilled in the art can understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims Therefore, the scope of the present invention is not limited to what is disclosed in the embodiments and drawings.

Claims (8)

1. A large-diameter pulley group opening and closing structure of a transmission line. The structure of the large-diameter blockage block includes an upper beam, a fixed column, an opening column, a pulley, and an opening and closing assembly. As well as the upper end of the open column, a plurality of pulleys are installed between the fixed column and the middle part of the open column, and it is characterized in that: an opening and closing assembly is installed between the upper end of the open column and the upper beam, The opening and closing assembly includes an extension plate, a connecting hanging plate, an adjusting pin, a lead screw and an adjusting nut. An extending plate is fixed on the upper end of the opening column, and a lower end of the connecting hanging plate is hinged on one side of the upper part of the extending plate. The upper end of the extension plate is made with a pin hole and is equipped with an adjusting pin, and the upper beam is made with a pin hole matching the adjusting pin; the other side of the upper part of the extension plate is hinged with one end of the screw, and the middle part of the screw can pass through the upper beam. end, and an adjusting nut is engaged and installed on the lead screw above the upper beam. 2. The opening and closing structure of the large-diameter block block of the transmission line according to claim 1, characterized in that: the width of the extension plate is greater than the width of the opening column. 3. The opening and closing structure of the large-diameter block block of the power transmission line according to claim 1, characterized in that: the other end of the screw is fixed with a lifting ring. 4. The opening and closing structure of the large-diameter block block of the power transmission line according to claim 1, characterized in that: the end of the upper beam used for installing and installing the lead screw is fixed/made into a plug-in open slot, and the lead screw can Swivelly insert or disengage the upper beam from the side of the plug-in open slot. 5. The opening and closing structure of the large-diameter block block of the transmission line according to claim 1, characterized in that: the connecting hanging plate is a two-piece structure, and the two connecting hanging plates with the same structure are arranged symmetrically in front of the upper beam, rear ends. 6. The opening and closing structure of the large-diameter block block of the transmission line according to claim 1, characterized in that: uniformly distributed reinforcing rings are installed at the pin holes at the top of the connecting hanging plate. 7. The opening and closing structure of the large-diameter block block of the transmission line according to claim 1, characterized in that: the opening column and the extension plate are reinforced by welding solid rectangular steel blocks. 8. The opening and closing structure of the large-diameter block block of the power transmission line according to claim 1, characterized in that: the upper end surface of the plug-in open slot is an adjustment platform, and a bump is installed on the adjustment platform.