KR20220165039A - Construction method for turbular supporting pole - Google Patents

Abstract

The present invention relates to an installation method of a tubular support, which can replace an existing steel tower with the tubular support without a temporary facility using a mobile crane apparatus. The installation method of the tubular support of the present invention comprises: a foundation construction step of constructing a base unit, which is a foundation of a support, at an inside space of the steel tower; an equipment installation step of installing the mobile crane apparatus in a position close to the steel tower; and a support assembly step of stacking and installing a plurality of pipe material units at an upside of the base unit. In the support assembly step, by using the mobile crane apparatus, the pipe materials are sequentially assembled at least twice from the lower side to the upper side, so that the existing steel tower can be replaced with the tubular support without any temporary facility.

Description

Installation method of tubular support {CONSTRUCTION METHOD FOR TURBULAR SUPPORTING POLE}

The present invention relates to a method for installing a tubular support, and more particularly, to a method for installing a tubular support that can replace an existing steel tower with a tubular support without a separate temporary facility using a mobile crane device.

In general, a column-shaped tubular support is applied as the simplest support that uses power generated in a power plant, such as a transmission tower for transmission and distribution. Tubular supports can be divided into modules to increase the convenience of transportation and installation, and can be constructed by connecting several cylindrical or rectangular pipes. Tubular supports for power transmission and distribution are generally composed of heavy materials with a thick thickness depending on the load supported by the used pipe material. In order to construct such a tubular support, it is necessary to transport prefabricated modular pipe materials at the factory to an installation site and then connect them using equipment.

In general, transmission and distribution steel towers are often installed in sloped or mountainous terrain where working conditions are difficult. Since the material of such a transmission and distribution tower is made of high-strength pipe or section steel, a crane is often used when installing the transmission and distribution tower. In addition, such transmission and distribution steel towers are generally installed only on flat land, and as an assembly method, a construction method in which members are lifted and assembled using a crane of about 100 tons is applied. Since the transmission and distribution steel tower is constructed in a flat area, it is not appropriate to install it in a mountainous area using a helicopter or in a mountainous area using a cable car. There are many problems in installing tubular support transmission towers in the helicopter and cable car transport section.

The modular tubing is manufactured in a divided form considering the load the tubular support receives when installing the tubular support. When transporting modular tubing to the installation site, the tubing divided according to the design is loaded onto a truck and transported. At this time, when the length of the pipe material is large, it is possible to solve the problem by laying the pipe material in case it encounters an upper and lower restricted place such as a tunnel during transportation. In this case, the pipe material must be divided in the transverse direction (direction perpendicular to the length direction) to make a shorter pipe material, and then transported standing upright. However, when the horizontal division of the pipe material increases, bolts are used to fasten the upper and lower pipe materials. To this end, flange welding is required at the end of the pipe, and a reinforcing rib plate is additionally required to reinforce the welded part. This method causes an increase in weight as well as difficulty in manufacturing and an increase in manufacturing cost, and has a disadvantage in that the appearance is poor because the coupling part protrudes from the pipe material and has a non-smooth surface.

The background art of the present invention is disclosed in Republic of Korea Patent Publication No. 1995-013970 (published on June 15, 1995, title of the invention: Climbing device and principle of a crane capable of lifting a cage equipped with a top crane up and down) have.

The present invention was created to improve the conventional problems as described above,

According to the installation method of the tubular support according to the present invention, it is possible to facilitate access in mountainous areas where access of large vehicles is difficult by using a mobile crane device and a tubular support.

In addition, the installation method of the tubular support according to the present invention, unlike the existing steel tower replacement method, can replace the steel tower without installing a separate facility.

Furthermore, the installation method of the tubular support according to the present invention can replace the existing steel tower while maintaining the live wire state.

The present invention is a method for installing a tubular support using a previously installed steel tower and a mobile crane device, comprising: a foundation construction step of constructing a base part, which is the foundation of the support, in the inner space of the steel tower; Equipment installation step of installing the mobile crane device in a position close to the steel tower; And a support assembly step of stacking and installing a plurality of pipe materials on the upper side of the base part; Including, in the support assembling step, the pipe materials may be sequentially assembled at least twice or more from the lower side to the upper side using the mobile crane device.

At this time, the support assembling step may include a tubular support arranging step of arranging a tubular member along the circumference of the cylinder portion; A tubular support stacking step of stacking a plurality of layers of tubular supports by assembling the tubular member on which the crane unit is disposed; Cylinder elongation step of raising the mast part and the crane part as the cylinder part elongates; a cylinder contraction step of rising toward the mast part while the cylinder part is contracted; and a step of checking the height of the tubular supports to determine whether or not the height of the stacked tubular supports has reached a target height.

In addition, in the step of arranging the tubular supports, in the step of checking the height of the tubular supports, when the height of the stacked tubular supports is equal to or less than the target height, it may be restarted.

On the other hand, the tubular support installation method according to the present invention includes a steel tower disassembly step of disassembling the existing steel tower using the mobile crane device after the support assembly step is finished; may further include.

At this time, the steel tower dismantling step may include an arm connecting step of connecting an arm member of the steel tower to a tubular support installed inside the existing steel tower; and a steel frame demolition step of sequentially removing the steel frame materials of the steel tower from the upper side. can include

On the other hand, the foundation construction step, the excavation work step of digging a space in which the base portion can be poured; Earth retaining work step of installing an earth plate on the outer wall of the space formed in the excavation work step; A reinforcing bar installation step of forming a framework of the base part in the formed space; and a concrete pouring step of introducing concrete into the formed space after the completion of the reinforcing bar excretion step. Including, the equipment installation step, after the end of the concrete pouring step, may be initiated after a predetermined time has elapsed.

At this time, the space formed in the excavation operation step may have a substantially rectangular parallelepiped shape having a predetermined depth.

On the other hand, the equipment installation step, the basic assembly step of assembling each component of the mobile crane device; A wire connection step of connecting and fixing the supporting wire to the mast; a wire winding step of winding the supporter wire with a lifting winch; and an assembly lifting step of vertically erecting the components assembled in the basic assembly step using a lifting wire. can include

On the other hand, the tubular support installation method according to an embodiment of the present invention includes an equipment removal step of dismantling the mobile crane device after the completion of the tower dismantling step; may further include.

Meanwhile, in the support assembling step, the tubular support stacking step may be initiated prior to the tubular support arranging step.

On the other hand, the support assembling step, after the completion of the step of checking the height of the tubular support, an external support coupling step of detachably coupling a plurality of external supports to the circumference of the tubular support; And a working scaffold connecting step of connecting the working scaffold to the plurality of external supports; may further include.

According to the present invention, the existing steel tower can be removed using a mobile crane device, and the existing steel tower can be replaced using a detachable tubular support, so that the replacement work can be smoothly performed in mountainous areas where access is difficult.

In addition, according to the present invention, it is possible to replace the steel tower without a power failure or installation of temporary facilities, thereby reducing costs and shortening the work period.

Furthermore, according to the present invention, it is possible to replace an existing steel tower while maintaining a live wire state, thereby preventing problems in power supply.

1 is a configuration diagram schematically showing a mobile crane device according to an embodiment of the present invention.
Figure 2 is a perspective view showing the state of the base portion according to an embodiment of the present invention.
3 is a configuration diagram schematically showing a cylinder part in a mobile crane device according to an embodiment of the present invention.
4 is a configuration diagram showing a coupling structure of a rolling ball part and a cylinder support plate part in a cylinder part of a mobile crane device according to an embodiment of the present invention.
5 is an exploded view showing a coupling structure of a rolling ball part and a cylinder support plate part in a cylinder part of a mobile crane device according to an embodiment of the present invention.
6 is a configuration diagram schematically showing a mast in a mobile crane device according to an embodiment of the present invention.
7 is a perspective view schematically showing a mast in a mobile crane device according to an embodiment of the present invention.
8 is a perspective view schematically showing a lifting guide in a mobile crane device according to an embodiment of the present invention.
9 is a plan view schematically showing a lifting guide in a mobile crane device according to an embodiment of the present invention.
10 is a schematic configuration diagram of a crane unit in a mobile crane device according to an embodiment of the present invention.
11 is a plan view schematically showing an external support and a working scaffold in a mobile crane device according to an embodiment of the present invention.
12 is a side view schematically showing an external support and a working scaffold in a mobile crane device according to an embodiment of the present invention.
13 is a perspective view schematically showing an example of a tubular support in a mobile crane device according to an embodiment of the present invention.
14 is a perspective view schematically showing a structure in which a support bar is connected to a tubular support in a mobile crane device according to an embodiment of the present invention.
15 is a perspective view schematically showing another example of a tubular support in a mobile crane device according to an embodiment of the present invention.
16 is a side view schematically showing the structure of a support bar and a cylinder part in a mobile crane device according to an embodiment of the present invention.
17 is a configuration diagram schematically showing a state in which a cylinder part, a mast part, and a crane part are assembled and placed on the floor in a mobile crane device according to an embodiment of the present invention.
18 is a configuration diagram schematically showing a process in which a cylinder part is raised in a mobile crane device according to an embodiment of the present invention.
19 is a configuration diagram schematically showing the operation process of the support bar when the cylinder unit is raised in the mobile crane device according to an embodiment of the present invention.
20 is a perspective view showing a state in which the tubular support according to an embodiment of the present invention is installed in the inner space of the steel tower.
21 and 22 are flowcharts illustrating a method of installing a tubular support according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be construed as including all changes, equivalents, or substitutes included in the spirit and technical scope of the present invention.

In describing the present invention, terms such as first and second may be used to describe various components, but the components may not be limited by the terms. Terms are only for the purpose of distinguishing one element from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

The term “and/or” includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected or connected to the other component, but other components may exist in the middle. can be understood On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it may be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "having" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features It may be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, interpreted in an ideal or excessively formal meaning. It may not be.

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

Hereinafter, with reference to FIGS. 1 to 18, first, a mobile crane device and a tubular support used in an embodiment of the present invention will be described in detail.

Figure 1 is a configuration diagram schematically showing a mobile crane device according to an embodiment of the present invention, Figure 2 shows a base portion according to an embodiment of the present invention, Figure 3 is according to an embodiment of the present invention It is a configuration diagram schematically showing the cylinder part in the mobile crane device, and FIG. 4 is a configuration diagram showing the coupling structure of the rolling ball part and the cylinder support plate part in the cylinder part of the mobile crane device according to an embodiment of the present invention, and FIG. 5 is an exploded view showing the coupling structure of the rolling ball part and the cylinder support plate part in the cylinder part of the mobile crane device according to an embodiment of the present invention.

1 to 5, a mobile crane device according to an embodiment of the present invention includes a cylinder part 110, a mast part 130, a crane part 140, a plurality of pipe parts 150, and a plurality of support bars. 160 and a lifting guide portion 170.

The cylinder part 110 is supported on the base part 10 . A plurality of base bolt parts (not shown) are fixed to the base part 10 . At this time, the base part 10 is fixed to the base part 10 to support the lower end of the cylinder housing part 111, and the cylinder fixing part 120 in which the insertion hole 122 is formed to insert the cylinder support plate part 115. ) may further include.

Referring to FIG. 2 , the base part 10 may be formed in an approximate rectangular parallelepiped shape having a predetermined height. The base part 10 may be constructed through, for example, concrete pouring, and may be made of various materials in comprehensive consideration of the geographical location of the place to be constructed, the nature of soil, and the natural environment.

The base part 10 may be provided in the inner space of the existing steel tower (T). A detailed description of the construction process of the base portion 10 will be described later with reference to FIG. 21 .

The cylinder fixing part 120 may be formed in a circular frame shape in which an insertion hole 122 is formed in the center. Fixing holes (not shown) are formed on the upper and lower sides of the cylinder fixing part 120 so that the fixing bolt part is fastened. The fixing hole is arranged along the circumferential direction of the cylinder fixing part 120 .

The cylinder part 110 includes a cylinder housing part 111, a cylinder rod part 113 and a cylinder support plate part 115.

The cylinder housing part 111 forms the outer shape of the cylinder part 110 and may be connected to the mast part 130 .

The cylinder rod part 113 may be movably coupled to the cylinder housing part 111 . The cylinder rod part 133 is drawn out from the cylinder housing part 111 and can push the cylinder housing part 111 upward. That is, as the cylinder rod part 113 is withdrawn from the cylinder housing part 111, the cylinder housing part 111 rises upward to a certain height.

In addition, in a state where the cylinder housing part 111 is raised to a certain height, when the cylinder rod part 113 is raised and drawn into the cylinder housing part 111 and then slightly lowered again, the cylinder support plate part 115 is a support bar. It is stably supported by (160). Therefore, as the cylinder portion 110 lifts the tubular portion 150 while rising at a predetermined height, the cylindrical tubular supports 150a may be stacked.

A cylinder flange 112 may be provided below the cylinder housing 111 to be supported by the support bar 160 .

The diameter of the cylinder flange portion 112 may be longer than that of the cylinder housing portion 111 .

A plurality of cylinder hole parts 112a may be formed along the radial direction of the cylinder flange part 112 . A cylinder bolt portion 112b may be bolted to the cylinder hole portion 112a. Accordingly, the cylinder housing portion 111 is stable and constrained to the support bar 160 without moving.

An approximately spherical rolling ball portion 114 may be formed at the lower end of the cylinder rod portion 113 .

A rolling groove 116 is formed on the upper side of the cylinder support plate 115 so that the rolling ball 114 is rotatably coupled thereto. The rolling groove 116 may be recessed by a predetermined depth from the upper side of the cylinder support plate 115 to the lower side.

Since the rolling ball part 114 is rotatably coupled to the rolling groove part 116, the cylinder housing part 111, the mast part 130, and the crane part 140 can be slightly inclined and raised. Therefore, even if the plurality of support bars 160 are slightly inclined or not level with the horizontal direction due to assembly tolerances, etc., the cylinder support plate 115 can be seated on the support bar 160 (see FIG. 15) in a slightly inclined state. have.

6 is a configuration diagram schematically showing a mast part in a mobile crane device according to an embodiment of the present invention, and FIG. 7 is a perspective view schematically showing a mast part in a mobile crane device according to an embodiment of the present invention.

Referring to FIGS. 6 and 7 , the mast part 130 is connected to the cylinder part 110 so as to rise as the cylinder part 110 is extended. The mast portion 130 is formed in a columnar shape on the upper side of the cylinder portion 110 . The mast portion 130 includes a plurality of unit masts 131 and a mast flange portion 133 .

The plurality of unit masts 131 may be assembled along the longitudinal direction of the cylinder housing part 111 on the upper side of the cylinder housing part 111 . The mast flange portion 133 is formed at the upper and lower ends of the unit mast 131, and the mast flange portion 133 has a mast bolt hole portion 134 to be assembled to the cylinder housing portion 111 and the unit mast 131, respectively. can be formed

A plurality of mast bolt hole portions 134 may be provided along the radial direction of the mast flange portion 133 . Adjacent mast flange parts 133 are opposed to each other, and as the mast bolt part 135 is fastened to the mast bolt hole part 134, a plurality of unit masts 131 may be assembled along the longitudinal direction. The length of the unit mast 131 may be appropriately designed in consideration of the height of the pipe section 150.

A mast fixing hole 136 may be formed in the unit mast 131 disposed on the uppermost layer to be connected to the lifting cable 147 .

A worker may move the unit mast 131 to a desired position by connecting the lifting cable 147 to the mast fixing hole 136 and then driving the crane unit 140 . In addition, after assembling the cylinder part 110, the unit mast 131, and the crane part 140, the operator connects the ground supporting wire 30 (see FIG. 16) to the mast fixing hole 136, and lifts the winch ( 20), the assembly of the cylinder part 110, the mast part 130 and the crane part 140 can be erected vertically.

A scaffolding bolt unit (not shown) may be installed in the mast unit 130 to be detachable. In addition, a scaffolding bolt hole portion (not shown) may be formed in the mast portion 130 to fasten the scaffolding bolt portion. Therefore, the operator can climb up the mast part 130 while fastening the foothold bolt part to the foothold bolt hole part. In addition, before the mobile crane device 100 is completely installed, the scaffolding bolt portion may not be fastened to the scaffolding bolt hole portion for work convenience.

8 is a perspective view schematically showing a lifting guide part in a mobile crane device according to an embodiment of the present invention, and FIG. 9 is a plan view schematically showing a lifting guide part in a mobile crane device according to an embodiment of the present invention, 10 is a schematic configuration diagram of a crane unit in a mobile crane device according to an embodiment of the present invention, and FIG. 11 is a schematic diagram showing an external support and a working scaffolding unit in a mobile crane device according to an embodiment of the present invention. A plan view, and FIG. 12 is a side view schematically showing an external support and a working scaffold in a mobile crane device according to an embodiment of the present invention.

Referring to FIGS. 8 to 12 , the crane unit 140 is installed on the mast unit 130 and may perform a function of winding or unwinding the lifting cable 147 . The crane unit 140 includes a rotation motor unit 141, a rotation table 142, a crane boom 143, an angle adjusting cylinder unit 145, and a crane winch unit 146.

The rotation motor unit 141 is disposed above the mast unit 130 . The rotation motor unit 141 may generate rotational force for winding the lifting cable 147 .

The rotation table 142 is rotatably connected to the rotation motor unit 141 .

The crane boom 143 is pivotally connected to the rotation table 142, and the lifting cable 147 is supported.

The angle adjusting cylinder unit 145 is connected to the crane boom 143 to adjust the angle of the crane boom 143.

The crane winch unit 146 is installed on the rotary table 142 to wind or unwind the lifting cable 147.

A plurality of pulley parts (not shown) may be installed in the crane boom 143 so that the lifting cable 147 is supported. As described above, as the crane winch unit 146 is driven, the lifting cable 147 is wound or unwound. At this time, the plurality of pulleys are rotated by the lifting cable 147.

As the rotary motor unit 141 is driven, the direction of the lifting cable 147 is turned along the circumferential direction of the mast unit 130 . As the angle adjusting cylinder unit 145 expands and contracts, the vertical angle of the crane boom 143 is changed. In addition, as the crane winch unit 146 is driven, the lifting cable 147 may be lowered or raised.

The pipe section 150 and the support bar 160 will be described in detail below.

The lifting guide part 170 may be installed on the mast part 130 so as to be moved along the longitudinal direction of the mast part 130 . In addition, the lifting guide part 170 may be detachably coupled to the plurality of support bars 160 to support the mast part 130 when the mast part 130 moves. The lifting guide part 170 may be formed in an annular shape along the circumference of the mast part 130 . Since the lifting guide part 170 moves along the longitudinal direction of the mast part 130, the lifting guide part 170 is moved to the upper side of the mast part 130 and then coupled to the plurality of support bars 160 to fix the position. let it In addition, since the lifting guide part 170 supports the mast part 130 so that the mast part 130 does not tilt when the mast part 130 is raised together with the cylinder housing, the mast part 130 is smoothly and stably. can rise

In addition, since the lifting guide part 170 is separated from the support bar 160 when moving the mast part 130 to the tubular support 150a on the upper floor, while raising the position of the lifting guide part 170, the mast part 130 ) can be increased.

A lifting fixing hole 171 is formed on the circumference of the lifting guide 170 so that the free end of the support bar 160 is fastened by the lifting bolt 173. When the lifting fixing hole 171 corresponds to the free end of the support bar 160 and then the lifting bolt 173 is fastened to the lifting fixing hole 171, the support bar 160 and the lifting guide 170 are connected to each other. It is constrained so that the lifting guide part 170 does not move up and down.

A lifting ring part 175 is formed on the upper side of the lifting guide part 170 so that the lifting cable 147 is connected. After the lifting cable 147 is connected to the lifting ring part 175, when the crane winch part 146 winds the lifting cable 147, the lifting guide part 170 moves upward along the mast part 130. In addition, after the lifting guide part 170 and the support bar 160 are restrained by the lifting bolt part 173, the lifting cable 147 can be separated from the lifting ring part 175.

In one embodiment, the mobile crane device 100 may further include a plurality of external supports 181 and a work platform 183.

One or more external supports 181 may be detachably fastened to the circumference of the tubular support 150a. In addition, the external support 181 may be arranged to have a predetermined interval along the circumference of the tubular support (150a).

The work scaffold 183 is connected to a plurality of external supports 181 so as to be disposed along the circumference of the tubular support 150a. The work platform 183 may be formed in a mesh shape. The work scaffold 183 is a structure on which a worker can step on and work.

The mobile crane device 100 further includes an external reinforcing bar 185 coupled by a hinge portion 186 to the outer surface of the external support 181 and the tubular support 150a to support the plurality of external supports 181 can do.

The external reinforcing bar 185 may support the external support 181 in a downwardly inclined state. Since the external reinforcing bar 185 supports the external support 181, the rigidity of the external support 181 and the scaffold 183 can be reinforced to promote worker safety.

External fixing holes 182 may be formed in the plurality of external supports 181 so that the lifting cables 147 are connected thereto. The external fixing hole 182 may be formed at an outer end of the external support 181 .

After the lifting cable 147 is connected to the external fixing hole 182, the external support 181 and the external reinforcing bar 185 are separated from the tubular support 150a, and the crane winch 146 lifts the cable 147. As it is wound, the external support 181, the working scaffold 183 and the external reinforcing bar 185 may be pulled and raised. Therefore, as the stacking height of the tubular support 150a increases, the installation height of the external support 181, the working scaffold, and the external reinforcing bar 185 can be increased.

13 is a perspective view schematically showing an example of a tubular support in a mobile crane device according to an embodiment of the present invention, and FIG. 14 is a support bar connected to a tubular support in a mobile crane device according to an embodiment of the present invention. A perspective view schematically showing a structure, Figure 15 is a perspective view schematically showing another example of a tubular support in a mobile crane device according to an embodiment of the present invention, Figure 16 is a mobile crane according to an embodiment of the present invention It is a side view schematically showing the structure of the support bar and the cylinder part in the device.

13 to 16, a plurality of tubular parts 150 are connected to the lifting cable 147 and assembled to surround the cylinder part 110 and the mast part 130 by driving the crane part 140, and , It is possible to form a tubular support (150a) that is stacked in a plurality of layers.

The tubular member 150 may be formed in an arc shape along the circumferential direction of the tubular support 150a. A plurality of tubular parts 150 are assembled along the circumferences of the cylinder part 110 and the mast part 130 to form a cylindrical tubular support 150a. At this time, one tubular support (150a) may be formed by assembling two tubular members (150) or by assembling three or more tubular members (150).

A plurality of layers of the tubular support 150a may be stacked along the longitudinal direction of the cylinder portion 110 and the mast portion 130 . The pipe section 150 is divided in the longitudinal direction and is a divided panel in a round shape. Since the canning unit 150 is divided in the longitudinal direction, even if the canning unit 150 is loaded on a vehicle, the vehicle loaded with the canning unit 150 can sufficiently pass through an upper and lower restricted area such as a tunnel. In addition, since the weight of the tubing unit 150 is significantly reduced, the tubing unit 150 can be easily transported in a flat or mountainous area, and can be transported using a helicopter or cable car. Furthermore, the height of the tubular support 150a can be adjusted by selecting the number of stacked tubular supports 150, so that the height can be conveniently adjusted according to the location and terrain where the tubular support 150a is installed.

A plurality of assembly holes 157 are formed on the circumference of the pipe member 150, and assembly bolts (not shown) may be fastened to the assembly holes 157.

The plurality of support bars 160 may be rotatably coupled to the pipe member 150 so as to protrude toward the inside of the pipe member 150 . The support bar 160 supports the cylinder portion 110 so that the cylinder portion 110 moves upward of the tubular support 150a when the cylinder portion 110 is driven.

At this time, the support block part 151 may be fixed to the inner surface of the pipe material part 150.

The support bar 160 is coupled to the support block portion 151 by the support bolt portion 152, and the support block portion 151 has a stopper portion 154 to limit the rotation of the support bar 160 downward. It can be formed to protrude.

In addition, a rotation allowance part 155 may be formed above the support bar 160 in the support block part 151 to limit the upper rotation range of the support bar 160 .

A free end of the support bar 160 may be inclined upward. Accordingly, when the cylinder part 110 moves upward, the cylinder support plate part 115 of the cylinder part 110 pushes up the support bar 160, and the cylinder support plate part 115 moves the support bar 160 If out of the support bar 160 can be horizontally returned to the lower side by its own weight. In addition, when the support bar 160 is returned to the lower side by its own weight, the free end of the support bar 160 may support the cylinder support plate 115 . Therefore, since it is possible to prevent the cylinder support plate portion 115 from falling to the lower side of the support bar 160, the cylinder portion 110 can maintain an elevated state.

The stopper part 154 may be formed in multiple stages in the vertical direction on the support block part 151, and the rotation permitting part 155 may be formed on the lower surface of the stopper part 154 to be inclined upward toward the cylinder part 110.

The stopper portion 154 may be formed substantially parallel to the support block portion 151 in a horizontal direction so as to horizontally support the support bar 160 .

The rotation allowing portion 155 may refer to an inclined surface portion formed to be inclined upward toward the inside of the pipe material portion 150 . Since the stopper part 154 supports the support bar 160 so that it does not rotate downward, the cylinder support plate part 115 of the cylinder part 110 supports the support bar 160 when the cylinder part 110 moves upward. After moving upward, it can be stably supported on the upper side of the support bar 160 . Therefore, since the cylinder part 110 and the crane part 140 are moved upward by a certain height, the tubular support 150a can be formed by assembling the tubular part 150 while the crane part 140 is raised by a certain height. . In addition, even if the height of the tubular support 150a increases to a certain height or more, the lengths of the cylinder part 110 and the crane part 140 do not need to be increased.

According to an embodiment of the present invention configured as described above, a mobile crane device and a method for installing a tubular support using the mobile crane device will be described.

17 is a configuration diagram schematically showing a state in which a cylinder part, a mast part, and a crane part are assembled on the floor in a mobile crane device according to an embodiment of the present invention, and FIG. 18 is an embodiment of the present invention. It is a configuration diagram schematically showing the process of raising the cylinder part in the mobile crane device according to the present invention, and FIG. 19 is a configuration schematically showing the operation process of the support bar when the cylinder part is raised in the mobile crane device according to an embodiment of the present invention. FIG. 20 shows a state in which a tubular support according to an embodiment of the present invention is installed inside a steel tower, and FIG. 21 is a flowchart showing a method of installing a tubular support according to an embodiment of the present invention, and FIG. 22 is It is a flow chart showing a detailed installation method of a mobile crane device and a tubular support according to an embodiment of the present invention.

First, referring to Figure 21, the installation method of the tubular support of the present invention, foundation construction step (S100), equipment installation step (S200), support assembly step (S300), steel tower disassembly step (S400 and equipment removal step (S500)) can include

In the foundation construction step (S100), the base part 10 may be constructed in the internal space of the existing steel tower.

As described above with reference to FIG. 2, the base portion 10 is a configuration for supporting the mobile crane device 100, more specifically, the cylinder portion 110. In order to install the tubular support 150a, a worker may construct the base part 10 in the inner space of the steel tower.

Workers can primarily perform excavation work in the inner space of the steel tower. (S110) The excavation work may mean an operation of digging soil to a predetermined depth in the inner space of the steel tower. A space to which the base part 10 can be fixed may be provided through the excavation work.

After the excavation work is finished, the worker may perform earth retaining work to block the wall of the empty space in which the soil is excavated. (S120) In the retaining work, the worker may install a soil board to prevent the soil from flowing down again in the empty space. The soil plate may be selected from various materials capable of blocking wood and other soil. For example, the soil plate may be formed as a flat plate having a rectangular cross section, and may be formed in various shapes in consideration of soil properties and geographic space.

After the completion of the earth retaining work, the worker may install the reinforcing bars constituting the framework of the base part 10 in the excavated inner space (S130). The same construction material can be hardened and formed. The discharged reinforcing bars may form the frame of the base part 10 .

After completion of the rebar excretion work, a concrete pouring step (S140) in which the worker introduces the molten concrete into the internal space may be initiated. The introduced concrete may be solidified after a certain period of time.

On the other hand, the concrete can be replaced with other materials in consideration of the climatic conditions and soil conditions of the site, and it is natural that these modified examples are also included in the scope of the present invention.

When the concrete pouring step (S140) ends, the construction of the base part 10 is completed, and preparation for installing the mobile crane device 100 is completed.

In the equipment installation step (S200), the mobile crane device 100 may be installed in a location close to the previously installed steel tower. Specifically, in the foundation construction step (S100), the mobile crane device 100 may be installed on the upper side of the cast-completed base portion 10.

22, in detail, the equipment installation step (S200) includes a basic assembly step (S210), a wire connection step (S220), a wire winding step (S230), a wire fixing step (S240) and an assembly lifting step (S250). can include

First, in the basic assembly step (S210), the cylinder part 110, the mast part 130, and the crane part 140 of the mobile crane device 100 described above may be assembled. At this time, assemblies of the cylinder part 110, the mast part 130 and the crane part 140 are arranged in a line. In addition, the cylinder fixing part 120 is assembled to the lower part of the cylinder housing part 111.

When the assembly of the cylinder part 110, the mast part 130, and the crane part 140 is completed in the basic assembly step (S210), the wire connection step (S220) may be initiated.

In the wire connection step (S220), the operator connects the supporting wire 30 to the mast fixing hole 136 of the mast unit 130. At this time, in order to maintain the support force of the mast part 130 at a certain strength or higher, a plurality of, preferably three or more supporting wires 30 may be connected to the mast fixing hole 136 .

When the connection of the supporting wire 30 is completed in the wire connection step (S220), the wire winding step (S230) may be initiated.

In the wire winding step (S230), the lifting winch unit 20 winds the supporting wire 30. As the supporting wire 30 is wound, that is, rolled around the lifting winch 20, the assembly of the cylinder part 110, the mast part 130, and the crane part 140 is erected substantially vertically.

In the wire fixing step (S240), the operator fixes the lifting wire to the ground. When the lifting wire is fixed to the ground, the assembly lifting step (S250) may be initiated.

In the assembly lifting step (S250), the assembly of the cylinder part 110, the mast part 130 and the crane part 140 is erected vertically by a lifting wire. Accordingly, the installation of the mobile crane device 100 is completed.

In the support assembly step (S300), a plurality of pipe parts 150 may be stacked and installed on the upper side of the base part 10. That is, it is possible to assemble and install a tubular support by stacking a plurality of tubular members 150.

Referring to FIG. 20, the support assembly step (S300) includes a tubular support arrangement step (S310), a tubular support stacking step (S320), a cylinder extension step (S330), a cylinder contraction step (S340), and a tubular support height check step (S350). ) may be included.

First, in the step of arranging the tubular support (S310), the operator connects the pipe section 150 to the lifting cable 147 and drives the crane winch section 146. The crane winch unit 146 winds the lifting cable 147 to position the tubing unit 150 at the circumference of the cylinder unit 110. At this time, the pipe material part 150 is located on the circumference of the cylinder part 110 in the crane winch part 146, and a worker assembles an assembly bolt part (not shown) into the assembly hole part 157 of the pipe material part 150.

In the tubular support stacking step (S320), the tubular supports 150a may be stacked by assembling the plurality of tubular members 150 arranged in the tubular support arranging step (S310).

Specifically, the first tubular support 150a may be formed by assembling a plurality of tubular members 150 . When the single-layer tubular support 150a is completed, a plurality of tubular members 150 are assembled on the upper side of the tubular support 150a to form the upper (second layer) tubular support 150a. A worker may assemble a plurality of tubular parts 150 again on the upper side of the tubular support 150a of the second layer to form a tubular support 150a of a higher layer. (See Fig. 10)

In the tubular support stacking step (S320), when the tubular support 150a is stacked above a certain height in the cylinder part 110, the components of the mobile crane device 100 reach a height at which the tubular support 150a can no longer be stacked. will do When the height of the tubular support 150a reaches the non-stacking height, the tubular support stacking step (S320) ends.

Meanwhile, in another embodiment of the present invention, the tubular support stacking step (S320) may be performed prior to the tubular support arranging step (S310).

That is, after assembling the first layer tubular support (150a) first, it is possible to form a second layer tubular support (150a) having a shorter diameter by first assembling the unassembled tubular member 150 on the ground. The second layer tubular support 150a having a smaller diameter than the diameter of the first layer tubular support 150a may be raised by passing through the first layer tubular support 150a.

According to another embodiment of the present invention, problems that may occur when a worker assembles the pipe unit 150 in the sky can be prevented.

Specifically, due to the characteristics of the tubular support 150a assembled at high altitude, there may be a problem in that the work efficiency of the operator decreases or it is difficult to disassemble and reassemble the tubular support 150a in case of malfunction.

However, in the case of assembling and raising the tubular support 150a on the ground, this problem can be prevented.

When the tubular support stacking step (S320) ends, the cylinder extension step (S330) may be initiated.

In the cylinder extension step (S330), the mast section 130 and the crane section 140 are raised as the cylinder section 110 is extended. At this time, the lifting guide part 170 is moved to the upper side of the mast part 130, the lifting guide part 170 is fastened to the upper support bar 160, and the cylinder housing part 111 of the cylinder part 110 is raised by the withdrawal of the cylinder rod portion 113. At this time, after the free end of the support bar 160 corresponds to the lifting fixing hole 171 of the lifting guide part 170, the lifting bolt part 173 is fastened to the lifting fixing hole 171 to lift the lifting guide part 170 Is constrained to the support bar 160.

In the cylinder contraction step (S340), the cylinder part 110 is contracted and raised toward the mast part 130 side. That is, the cylinder rod part 113 of the cylinder part 110 rises while being drawn into the cylinder housing part 111 . At this time, the cylinder support plate portion 115 is raised to pass through the support bar 160 of the lower layer, and the support bar 160 is lowered by its own weight and returned horizontally. Therefore, since the cylinder support plate portion 115 can pass through the support bar 160 but does not fall down from the support bar 160, the cylinder portion 110 can be moved upward by a certain height.

Meanwhile, as the cylinder rod part 113 descends, the cylinder support plate part 115 may be supported by the support bar 160 . At this time, when the cylinder rod part 113 is slightly lowered after the support bar 160 is returned, the cylinder support plate part 115 is stably seated on the upper side of the support bar 160. Therefore, since it is possible to prevent the cylinder support plate portion 115 from falling to the lower side of the support bar 160, the cylinder portion 110 can maintain an elevated state.

In the step of checking the height of the tubular support (S350), the operator can check and determine whether the height of the tubular support (150a) installed so far has reached the target height.

In the step of checking the height of the tubular support (S350), when the height of the tubular support (150a) does not reach the target height, the worker may start the tubular support stacking step (S320) again. Accordingly, the height of the tubular support 150a may be increased until reaching a target value.

An object of the present invention is to install a tubular support (150a) that can replace an existing steel tower, and in particular, to install a tubular support (150a) that can replace a steel tower for high voltage wires installed in a mountainous area.

Steel towers for high voltage wires need to be designed high in height to prevent safety accidents caused by contact by ordinary people and to avoid interference from other vehicles or buildings. Therefore, the height of the tubular support 150a to replace it also needs to be formed above a certain height.

In the installation method of the tubular support 150a according to the present invention, the operator can determine and adjust the height of the tubular support 150a, so that the tubular support 150a having a target height or higher can be provided.

In an embodiment of the present invention, the support assembling step (S300) may end when the height of the tubular support (150a) reaches the target height in the tubular support height check step (S350).

In another embodiment, the support assembling step (S300) may further include an external support coupling step (S360) and a working scaffold connection step (S370) after the end of the tubular support height checking step (S350).

In the external support coupling step (S360), the operator may detachably couple the plurality of external supports 181 to the circumference of the tubular support 150a.

After the combination of the external supports 181 is completed, the operator can connect the working scaffolds to the plurality of external supports 181 in the step of connecting the scaffolds (S370). Since the work scaffold 183 is a structure that a worker can step on and work on, it is possible to significantly reduce the possibility of a worker's accident.

When the tubular support 150a of a certain height is assembled to the circumference of the cylinder part 110, the cylinder part 110 is further raised to a certain height as described above, and then the tube member 150 is reassembled. Therefore, since the cylinder part 110 and the crane part 140 are moved upward by a certain height, a tubular support can be formed by assembling the pipe member 150 while the crane part 140 is raised by a certain height. In addition, even if the height of the tubular support increases, the lengths of the cylinder part 110 and the crane part 140 do not need to be increased.

Referring to FIG. 20 , a tubular support 150a may be installed inside the existing steel tower T in a state in which the support assembly step (S300) is completed. Meanwhile, after the support assembling step (S300) is finished, a steel tower disassembly step (S400) of disassembling the existing steel tower using the mobile crane device 100 may be initiated.

The steel tower dismantling step (S400) includes an arm connecting step (S410) and a steel frame demolition step (S420).

In the arm connecting step (S410), the arm member of the steel tower may be connected to the arm member 150b provided on the upper side of the tubular support 150a installed inside the existing steel tower. Therefore, the high voltage wire connected to the arm member may be connected to the tubular support 150a.

After the end of the arm connection step (S410), a steel tower demolition step (S420) of sequentially removing steel frame materials of the steel tower may be initiated. In the steel tower demolition step (S420), the steel tower may be dismantled from the upper side to the lower side.

In the steel tower demolition step (S420), the demolition may proceed by utilizing the previously installed mobile crane device 100. In another embodiment, the steel tower may be removed using a helicopter.

In the equipment removal step (S500), the installed mobile crane device 100 may be removed.

As such, it will be understood that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art to which the present invention pertains.

Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the foregoing detailed description, and the meaning and scope of the claims And all changes or modified forms derived from the equivalent concept should be construed as being included in the scope of the present invention.

10: base part 20: lifting winch part
100: mobile crane device 110: cylinder part
111: cylinder housing portion 112: cylinder flange portion
112a: cylinder hole portion 112b: cylinder bolt portion
113: cylinder rod part 114: rolling ball part
115: cylinder support plate part 116: rolling hole part
120: cylinder fixing part 122: insertion hole part
130: mast part 131: unit mast
133: mast flange portion 134: mast bolt hole portion
135: mast bolt part 136: mast fixing hole part
137: scaffolding bolt part 137a: scaffolding bolt hole part
140: crane unit 141: rotation motor unit
142: rotary table 143: crane boom
145: angle adjusting cylinder part 146: crane winch part
147: lifting cable 150: administration department
150a: tubular support 151: support block
152: support bolt part 154: stopper part
155: rotation allowance part 157: assembly hole part
158: assembly bolt part 160: support bar
170: lifting guide part 171: lifting fixing hole part
173: lifting bolt part 175: lifting hook part
181: external support 182: external fixing hole
183: work scaffold 185: external reinforcing bar
186: hinge part
S100: foundation construction step S200: equipment installation step
S300: support assembly step S400: steel tower disassembly step
S500: equipment demolition step

Claims (11)

In the method of installing a tubular support using an existing steel tower and a mobile crane device,
A foundation construction step of constructing a base part, which is a foundation of a support, in the inner space of the steel tower;
Equipment installation step of installing the mobile crane device in a position close to the steel tower; and
A support assembly step of stacking and installing a plurality of pipe materials on the upper side of the base part;
Including,
The step of assembling the support is
Tubular support installation method, characterized in that the pipe materials are sequentially assembled at least twice or more from the lower side to the upper side using the mobile crane device. According to claim 1,
The step of assembling the support is
A tubular support arranging step of arranging a tubular member along the circumference of the cylinder portion;
A tubular support stacking step of stacking a plurality of layers of tubular supports by assembling the tubular member on which the crane unit is disposed;
Cylinder elongation step of raising the mast part and the crane part as the cylinder part elongates;
a cylinder contraction step of rising toward the mast part while the cylinder part is contracted; and
a height checking step of the tubular support to determine whether or not the height of the stacked tubular supports has reached a target height;
Tubular support installation method comprising a. According to claim 2,
In the step of arranging the tubular support,
In the step of checking the height of the tubular support, when the height of the stacked tubular supports is less than the target height, the method of installing the tubular support, characterized in that the start again. According to claim 1,
A steel tower disassembly step of disassembling an existing steel tower using the mobile crane device after the support assembly step is finished;
Tubular support installation method further comprising a. According to claim 4,
The steel tower dismantling step,
An arm connection step of connecting an arm member of the steel tower to a tubular support installed inside the existing steel tower; and
A steel frame demolition step of sequentially removing the steel frame materials of the steel tower from the upper side;
Tubular support installation method comprising a. According to claim 1,
The foundation construction stage,
Excavation work step of digging a space in which the base part can be poured;
Earth retaining work step of installing an earth plate on the outer wall of the space formed in the excavation work step;
A reinforcing bar installation step of forming a framework of the base part in the formed space; and
A concrete pouring step of introducing concrete into the formed space after the completion of the reinforcing bar excretion step;
Including,
The equipment installation step,
Tubular support installation method, characterized in that the start after the elapse of a predetermined time after the end of the concrete pouring step. According to claim 6,
The tubular support installation method, characterized in that the space formed in the excavation step has a substantially rectangular parallelepiped shape having a predetermined depth. According to claim 1,
The equipment installation step,
A basic assembly step of assembling each component of the mobile crane device;
A wire connection step of connecting and fixing the supporting wire to the mast;
a wire winding step of winding the supporting wire with a lifting winch; and
An assembly lifting step of vertically erecting the components assembled in the basic assembly step using a lifting wire;
Tubular support installation method comprising a. According to claim 4,
Equipment demolition step of dismantling the mobile crane device after the completion of the tower dismantling step;
Tubular support installation method further comprising a. According to claim 2,
The step of assembling the support is
The tubular support installation method, characterized in that the step of stacking the tubular support is initiated prior to the step of arranging the tubular support. According to claim 2,
The step of assembling the support is
An external support coupling step of detachably coupling a plurality of external supports to the circumference of the tubular support after completion of the step of checking the height of the tubular support; and
Working scaffold connecting step of connecting the working scaffold to the plurality of external supports;
Tubular support installation method further comprising a.

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