JP2006044927A - Steel tower assembling-disassembling simple lifting device and lifting method by device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely perform steel tower assembling-disassembling work, enabling easy hot-line job, use even in a site limited in land, and transportation even to a place hard to transport. <P>SOLUTION: This steel tower assembling-disassembling simple lifting device is composed of a rail fixed to a steel tower side surface, and a lifting device having a revolving device fixed by sliding on the rail and rolling up a member by revolving/derricking a boom; and is formed by dividing the rail and the lifting device into single body weight of about 50 kg or less. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a simple lifting device for assembling and dismantling a steel tower and a lifting method using the device.

  In the construction of towers for overhead power transmission lines, there are more restrictions on construction, such as the wide range of construction sites such as mountainous areas and residential areas, and the state of electricity being transmitted, compared to general construction.

  While there are many restrictions, tower assembly work requires a device for lifting and mounting members necessary for new installation or remodeling on the tower in a live state. Also, in the steel tower dismantling work, a device for dismantling the members and dropping the members to the ground is required.

In conventional steel tower assembly and dismantling work, mobile cranes, climbing cranes, and poles are used.
JP 09-012274 A JP 2002-281624 A

  In the case of a mobile crane, there are restrictions on the carry-in route, and it is impossible to carry on a narrow road such as a densely populated house or a mountain tower.

  In the case of a climbing crane, the climbing crane can be divided and transported to the mountainous area, but the weight of the climbing crane is heavy, and a large-scale temporary work for transporting the cableway or the like is necessary.

  In the case of a pedestal, transportation of the pedestal is relatively easy, but it is necessary to attach branch lines in three directions at the time of operation, and there is a limitation on turning. It is necessary to take a wide work site (rented land range) as a branch line installation range. Also, the construction of one-sided live lines, which has been carried out recently, could not be applied because of the need for branch lines.

  A steel tower that can be transported to places that are difficult to transport, can be used in places with limited land use, can be easily operated on the live line, and can be safely assembled and dismantled. There is a need to provide a simple lifting device for assembly and dismantling and a simple lifting method for assembling and dismantling steel towers.

  The present invention can be used in places where transportation is difficult, can be used in places where there are restrictions on the site, and on the side of the tower so that the tower can be assembled and disassembled safely. It consists of a fixed rail, a swivel device that pivots on the rail and that is fixed by sliding on the rail, a horizontal adjustment mechanism that raises and lowers, and a lifting device that winds up the members. The weight of the rail and the lifting device is about 50 kg. A simple lifting device for assembling and dismantling the tower was divided into the following.

  In addition, the present invention specifically relates to a tower assembly and a simple lifting device for dismantling in which a undulation / winding wire is inserted into a cylindrical main column of a horizontal adjustment mechanism, a turning device, and a lifting device.

  Furthermore, the present invention can be transported to places that are difficult to transport, and can be used in places where there are restrictions on the site, facilitating work on live lines, and also to safely assemble and disassemble towers. In order to make it possible to fix the rail on the side of the tower, slide the cylindrical support pillar, horizontal adjustment mechanism, swivel device and lifting device on the rail, and lift the tower member in the live line state, A simple lifting method for tower assembly and dismantling, in which the tower is assembled or dismantled by turning and raising and lowering, was adopted.

  The present invention includes a rail fixed to a side surface of a steel tower, a swivel device that swivels on the rail and that swings a boom, a horizontal adjustment mechanism that moves up and down, and a lifting device that winds up a member. Since the apparatus is a simple tower lifting and dismantling lifting apparatus in which the unit weight is divided into about 50 kg, it can be transported to places that are difficult to transport, and can be used in places where there are restrictions on the site even in a live line state.

  In the present invention, the single unit weight of the rail and the lifting device is divided into about 50 kg or less, so that it can be carried by a shoulder or a transport vehicle. Therefore, the steel tower assembly and dismantling lifting device that does not require temporary construction such as cableway is used for transportation to the mountain.

  In addition, the tower assembly and dismantling lifting device can be raised and lowered on the rail fixed to the side of the tower, and by fixing it at any position of the device, the branch line can be eliminated, and in a narrow place Work can be done with a limited work range.

  In addition, it is a steel tower assembly and dismantling simple lifting device in which the hoisting and winding wires are inserted into the cylindrical main body column of the horizontal adjustment mechanism, swiveling device, and lifting device, so that the wire becomes in the way and the boom cannot turn. There is nothing, and there is no restriction on the entanglement and turning of the wire, and the steel tower is tilted (inclination angle from the vertical line of the tower column 23), so that the simple lifting device for assembling and dismantling the tower is also inclined. If the load is lifted as it is, the boom and the suspended load will swing freely due to the weight of the suspended load, but the swiveling device can be kept horizontal by the leveling mechanism. The boom and suspended load do not swing freely due to the weight of the load, improving workability and safety.

  Furthermore, a rail is fixed to the side of the tower, and a cylindrical support column, a horizontal adjustment mechanism, a turning device and a lifting device are slid and mounted on the rail, and the tower member is lifted and swung in a live state. As the tower assembly and dismantling simple lifting method is used for assembling or dismantling the tower, it can be transported to places where transportation is difficult, and it can also be used in places where there are restrictions on the site, working on live lines In addition, the tower can be assembled and disassembled safely.

  The present invention will be described in detail below based on specific embodiments of the accompanying drawings.

  FIG. 1 is a side view of a state where a rail 2, a cylindrical support column 3, a turning device 20, a leveling mechanism 21, and a lifting device 4 are attached to a steel tower 1.

  FIG. 2 shows an example of steel tower assembly work by this apparatus. First, this apparatus is assembled at the lower part of the steel tower (above ground), and the rail 2 and this apparatus are attached to the side surface of the steel tower. Raise it to the required height along the rail 2 attached to the side of the steel tower, and fix this device. In this case, there is a live electric wire below the working position, and assembly is performed at the upper part. It is a construction method that allows the assembly of the upper part of the tower by sequentially raising it under these conditions.

  FIG. 3 is a front view of a state where the rail 2 and the cylindrical support pillar 3 are attached to the steel tower 1.

  The steel tower 1 includes a steel tower main pillar 23, a steel tower diagonal 5, a steel tower horizontal member 6, and the like.

  A rail 2 having a single length of 2 m is fixed to the side surface of the steel tower 1 with, for example, H-shaped steel H100 × 100 × 6 × 8. The rails 2 are connected to each other by bringing the connecting plates into contact with both sides and screwed with bolts and nuts, and the side of the tower 1 of the rail 2 is fixed to the tower diagonal 5 This is done by the clamp fitting 8 of the pipe 7.

  The cylindrical support pillar 3 is a square steel pipe of □ 175 × 175 × 6, for example, and is attached to the support pillar fixing pipe 9, and both ends of the support pillar fixing pipe 9 are attached to the support fittings 24 and fixed to the tower main pillar 23.

  A lifting device 4 is provided at the upper end of the cylindrical support column 3.

  The lifting device 4 erects the cylindrical main body column 10 at the upper end of the cylindrical support column 3 via the horizontal adjustment mechanism 21 and the turning device 20, and pivotally attaches the proximal end of the column 11 to the proximal end portion of the cylindrical main body column 10. Then, the middle part of the column 11 and the upper part of the cylindrical main body column 10 are connected by the fixed pipe 12, and the boom 13 is pivotally attached to the proximal end portion of the cylindrical body column 10 so as to be raised and lowered. Sheaves 14, 15, and 16 are provided at the upper end of the cylindrical main body column 10, the upper end of the column 11, and the upper end of the boom 13, respectively. The hoisting wire 18 and the lifting wire 19 are inserted through the cylindrical support column 3 and the cylindrical main body column 10, and the hoisting wire 18 passes through the sheave 14 and the sheave 15, and its end is attached to the upper upper end of the boom 13. Is hooked around a hook 17 through a sheave 14, a sheave 15, and a sheave 16, and its end is attached to the bottom upper end of the boom 13.

  The lifting of the load suspended from the hook 17 is performed by a winch through the lifting wire 19, and the boom 13 is also lifted by the winch through the lifting wire 19.

  The lifting device 4 is turned by a manual turning device 20 provided at the lower end of the cylindrical main body column 10 of the lifting device 4. The swivel device 20 is configured such that a worm wheel is externally fitted and fixed to the cylindrical main body column 10, a worm gear is engaged with the worm wheel, and an operation lever is fixed to an end portion of the worm gear.

  Moreover, the horizontal adjustment mechanism 21 is provided in the lower part of the turning apparatus 20, and a turning part is kept horizontal according to the rolling of the steel tower 1 (inclination angle from the vertical line of the steel tower column 23), thereby enabling stable work. The level adjustment mechanism 21 is provided with a level and maintains level by an adjustment bolt or the like.

  The load of the lifting device 4 is set to 490 kg or less, which is not applicable to safety regulations such as cranes, and the cylindrical support column 3, the horizontal adjustment mechanism 21, the turning device 20, and the lifting device 4 are configured by dividing members. It can be transported to the tower site with shoulders and transport vehicles.

  For example, the cylindrical main body column 10 of the lifting device 4 is a steel pipe φ165.2 × 7t and has a two-joint total length of 1.6 m. The strut 11 is a steel pipe φ114.3 × 4.5 t and has a total length of 2.3 m with two joints. The boom 13 is a steel pipe φ114.3 × 4.5 t and has a total length of three joints of 5.0 m.

  The strut 3 is a square steel pipe □ 175 × 175 × 6t and has a total length of 3.67 m with three joints. The rail 2 is H-shaped steel H100 × 100 × 6 × 8 and has a single length of 2.0 m.

  Next, the effect of the processing of the undulating wire 18 and the lifting wire 19 will be described with reference to FIGS.

  On the cylindrical support column 3, the cylindrical main body column 10 is erected via the horizontal adjustment mechanism 21 and the turning device 20, and the proximal end of the column 11 is pivotally attached to the proximal end portion of the cylindrical body column 10. The intermediate part 11 and the upper part of the cylindrical main body column 10 are connected by a fixed pipe 12, and the boom 13 is pivotally attached to the proximal end part of the cylindrical main body column 10 so as to be raised and lowered. Sheaves 14, 15, and 16 are provided at the upper end of the cylindrical main body column 10, the upper end of the column 11, and the upper end of the boom 13, respectively. The undulation wire 18 and the lifting wire 19 are inserted through the cylindrical support column 3 and the cylindrical main body column 10. The undulation wire 18 is attached to the upper end of the boom 13 through the sheave 14 and the sheave 15. The sheave 14, the sheave 15, and the sheave 16 are passed around the hook 17, and its end is attached to the lower end of the boom 13. Reference numeral 20 denotes a turning device.

  In FIG. 4 a, the undulation wire 18 and the lifting wire 19 are arranged on the outer peripheral surface of the cylindrical support column 3 and the cylindrical main body column 10 without being inserted through the cylindrical support column 3 and the cylindrical main body column 10. If this is turned by the turning device 20, the undulation wire 18 and the lifting wire 19 are wound around the cylindrical support column 3 and the cylindrical main body column 10 as shown in FIG.

  When the undulation wire 18 and the lifting wire 19 of the present apparatus shown in FIG. 5 a are inserted into the cylindrical support column 3, the horizontal adjustment mechanism 21, the turning device 22, and the cylindrical main body column 10, the cylindrical body column 10 is rotated by the turning device 20. Even if the support column 11 and the boom 13 are swung, as shown in FIG. 5b, the hoisting wire 18 and the lifting wire 19 are not wound around the cylindrical support column 3 and the cylindrical main body column 10 and can be swung infinitely. Since it is possible to perform the revolving operation by the revolving device 20 that can perform the undulation and lifting operations with peace of mind, it is possible to revolve 360 ° and to ensure stable workability and safety.

  The effect of the horizontal adjustment mechanism 21 will be described with reference to FIGS.

  The cylindrical support pillar 3 is attached to the tower main pillar 23 where the tower 1 is rolled as shown in FIG. 6a. Since the cylindrical support pillar 3 is attached to the rolling tower main pillar 23 and has an oblique shape, as shown in FIG. 6b, the boom 13 turns freely by the weight of the load 22, and the load 22 is on the live line side. There is a possibility of swinging, which is dangerous.

  In the present invention, as shown in FIG. 7 a, a horizontal adjustment mechanism 21 is provided at the lower end of the cylindrical main body column 10. Since the cylindrical main body column 10 is vertically arranged by the horizontal adjustment mechanism 21, as shown in FIG. 7b, even if the load 22 is lifted, the boom 13 does not swing, and the lifting work of the load 22 can be performed stably. 20 can be designed to handle the minimum load.

  The boom 13 has a total length of 3.2 m with two joints, a working radius of 3.0 m, and a maximum lifting load of 490 kg. However, the boom 13 has a total length of 5.0 m, a working radius of 4.5 m, and a 154 kV class steel tower. A device that can be used.

  In the present invention, since the lifting device 4 is lifted through the rail 2, it can be lifted safely even in a live line state.

  In the present invention, since there is no need for a branch line, the present invention can be applied to construction in a narrow place or construction on a live line.

  The present invention can be used not only for a simple lifting device for assembling and dismantling steel towers but also for a simple lifting device for assembling and dismantling building steel frames.

It is a side view of the state which attached the rail of this invention, the cylindrical support pillar, and the lifting apparatus to the steel tower. It is a schematic diagram of the assembly method by this apparatus of the present invention. It is a front view of the state which attached the rail of this invention, and the cylindrical support pillar to the steel tower. FIG. 4A is a schematic view before turning, and FIG. 4B is a schematic view after turning, where a conventional undulation wire and a lifting wire are not inserted into the cylindrical support column and the cylindrical main body support. FIG. 5A is a schematic view before turning, and FIG. 5B is a schematic view after turning, in a state where the undulation wire and the lifting wire of the present invention are inserted through the cylindrical support column and the cylindrical main body support. 6A and 6B are schematic diagrams for explaining the effect of a conventional horizontal adjustment mechanism, in which FIG. 6a is a schematic diagram before lifting, and FIG. 6b is a schematic diagram after lifting. FIG. 7A is a schematic view of the lifting device in a horizontal state by the horizontal adjustment mechanism of the present invention, FIG. 7A is a schematic view before lifting, and FIG. 7B is a schematic view after lifting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Steel tower 2 ... Rail 13 ... Boom 4 ... Lifting device 18 ... Rising wire 19 ... Lifting wire 10 ... Cylindrical main body support | pillar

Claims (3)

  It consists of a rail fixed to the side of the tower, a swivel device that pivots on the rail that is fixed by sliding on the rail, a leveling mechanism that raises and lowers, and a lifting device that winds up the members. Is a simple lifting device for assembling and dismantling steel towers divided into about 50 kg or less.   The steel tower assembling and disassembling simple lifting device according to claim 1, wherein the undulation and winding wires are inserted into the horizontal main body, the swiveling device, and the cylindrical main body column of the lifting device. The rail is fixed to the side of the tower, and the cylindrical support pillar, horizontal adjustment mechanism, swiveling device and lifting device are slid and mounted on the rail, and the tower member is lifted, swung and undulated in the live line state. A simple lifting method for assembling and dismantling steel towers for assembling or dismantling.

Images