JP4214091B2 - Simple lifting device for steel tower assembly and dismantling and lifting method - Google Patents

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 fact that electricity is 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. A fixed rail, a manual swiveling device that swivels on the rail, and a hand that swivels the boom, and a spirit level are arranged, and the vertical positioning of the cylindrical main column and the level of the swivel are maintained by adjusting bolts. It consists of a horizontal adjustment mechanism that enables stable work and a lifting device that raises and lowers the boom via a swiveling device and winds up and down the hoisting and hoisting wires. The cylindrical body of the horizontal adjustment mechanism, swiveling device, and lifting device The steel tower assembly and dismantling simple lifting device was made by inserting it into the column and dividing the rail and lifting device into a single unit weight of 50 kg or less.

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. The rail is fixed to the side of the pylon, the hand swiveling device that swivels on the rail and is used to turn the boom, and the level. It consists of a horizontal adjustment mechanism that enables stable work by maintaining the vertical arrangement and the level of the swivel unit, and a lifting device that raises and lowers the boom via the swivel device, and the horizontal adjustment mechanism for the hoisting and hoisting wires , A steel tower assembly and dismantling simple lifting device, which is inserted into the cylindrical main column of the swivel device and lifting device and divided into a single unit weight of 50 kg or less, is assembled at the bottom of the steel tower, and the rail and front Install the device, elevated and fixed to the required height along the rail, in a live-line state, lifting the tower member, the turning, and the relief is brought to tower assembly or pylon assembly performing disassembly and the simple demolition lifting method.

The present invention provides a rail fixed to the side surface of a steel tower, a manual swing device that swings on the rail and is fixed, and a level, and a vertical arrangement of the cylindrical main body column by adjusting bolts. It consists of a leveling mechanism that maintains the level of the swivel unit and enables stable work, and a lifting device that raises and lowers the boom via the swiveling device. Since it is a steel tower assembly and dismantling simple lifting device that is inserted into the cylindrical main column of the lifting device and the rail and the lifting device are divided to a weight of 50 kg or less, it can be transported to places where transportation is difficult. It can be used in a line state or in a place where there are restrictions on the site.

  In the present invention, the rail and the lifting device are divided into a single weight of about 50 kg or less, and 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.

Also, the tower assembly and dismantling lifting device can be lifted and lowered on the rail fixed to the side of the steel tower, and the branch line can be eliminated by fixing the device at an arbitrary position. 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.

On top of that, a rail fixed to the side of the tower, a hand swiveling device that swivels on the rail and that pivots the boom, and a spirit level are arranged, and the cylindrical main body column is placed vertically by adjusting bolts. And a horizontal adjustment mechanism that maintains the level of the swivel unit and enables stable work, and a lifting device that raises and lowers the boom via the swivel device. The steel tower assembly and dismantling simple lifting device is assembled at the bottom of the tower, and the rail and the equipment are attached to the side of the tower. It was fixed elevated to the required height along the rail, in a live-line state, lifting the tower member, turning, tower assembly by undulations to assemble or dismantle the tower and dismantling for simple lifting Because it is a construction method, it can be transported to places where transportation is difficult, and it can be used in places where there are restrictions on the site, making it easy to work on live lines, and to safely assemble and disassemble towers it can.

  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 the support fittings 24 are attached to both ends of the support pillar fixing pipe 9 to be 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 base end portion of the cylindrical main 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. The cylindrical support column 3, the horizontal adjustment mechanism 21, the swivel 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. 11 is connected to the upper part of the cylindrical main body column 10 by a fixed pipe 12, and a boom 13 is connected to the base end of the cylindrical main body column 10.
Pivot pivoting freely. 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. When this is turned by the turning device 20, as shown in FIG. 4b, the undulation wire 18 and the lifting wire 19 are wound around the cylindrical support column 3 and the cylindrical main body column 10, and the undulation / lifting operation cannot be performed.

  When the undulation wire 18 and the lifting wire 19 of this apparatus shown in FIG. 5 a are inserted through 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 swiveling work by the swivel device 20 that can undulate and lift safely, it is possible to swivel 360 °, ensuring 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. It was a device that can.

  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 (2)

A rail fixed on the side of the steel tower, a manual swiveling device that swivels on the rail and that pivots the boom, and a spirit level are arranged. Level adjustment mechanism that enables stable work and a lifting device that raises and lowers the boom via the swivel device and winds up the members. The undulation and hoisting wires are connected to the horizontal adjustment mechanism, swivel device, and lifting device. A simple lifting device for assembling and dismantling a steel tower in which a rail and a lifting device are divided into a single unit weight of 50 kg or less by being inserted into a cylindrical main body column . A rail fixed on the side of the steel tower, a manual swiveling device that swivels on the rail and that pivots the boom, and a spirit level are arranged. Level adjustment mechanism that enables stable work and a lifting device that raises and lowers the boom via the swivel device and winds up the members. The undulation and hoisting wires are connected to the horizontal adjustment mechanism, swivel device, and lifting device. A steel tower assembly and demolition simple lifting device, which is inserted into the cylindrical main column support and divided into a single unit weight of 50 kg or less, is assembled at the bottom of the tower, the rail and the device are attached to the side of the tower, and along the rail Steel tower assembly and dismantling simple lifting method that raises and secures the tower to the required height , lifts, turns, and undulates steel tower members in a live state to assemble or disassemble the tower.

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