JP6723032B2 - High altitude construction method using overhead crane - Google Patents

Description

The present invention relates to a method for constructing a long member such as a duct or a pipe in a high place of a building.

For example, for work in high places during renovation work, if a corridor or truss for maintenance such as a catwalk can be used, it is conceivable to carry out a scaffolding board for them. However, there are cases where the construction area is far from the corridor or truss, or the structure is such that no work other than inspection is scheduled. Further, in existing facilities, work may be performed on the ground, or equipment and fixtures may be installed, so work at heights may not be possible. The operator of the facility would like to avoid the suspension of such work and the temporary relocation of existing items for construction.

Here, Patent Document 1 discloses that a scaffolding plate is laid on a truss and installation work such as a duct is performed. Patent Document 2 discloses that a work floor for removing asbestos and the like is installed on a crane. Further, Patent Document 3 discloses that a scaffold for performing slate tensioning of a ceiling is provided on a moving carriage that moves on a truss. Further, Patent Document 4 discloses that a traveling rail of an overhead crane is used to move a scaffold for finishing an overhead space.

JP-A-11-36578 JP, 2009-235882, A Japanese Utility Model Publication No. 3-27052 JP, 2003-321932, A

However, in the technique of Patent Document 1, it is necessary to stretch a net for prevention of a worker's fall, such as a girder, before laying the work plate on the truss, and to put a sheet for preventing the tool member from falling before and after laying the work plate. There is. According to the inventor's knowledge, if this construction method is applied to a large space with a floor area of about 3300 m ² , it takes a few months for the preparatory work, and finally the main construction is started. Further, since the standing portions of the ceiling truss steel material interfere with each other, workability is difficult. In addition, it is difficult to apply when installing at a height below the truss. Ducts and pipes are connected in the longitudinal direction and may rise and fall, and some pipes, such as drain pipes, require a slope. Further, in any of the techniques of Patent Documents 2 to 4, the work position can be moved only on a straight line, and it is difficult to work by moving the entire ceiling two-dimensionally.

Therefore, according to the present invention, it is possible to omit preparation work such as a sheet for fall prevention, and to install a long object such as a duct or a pipe in the whole height of a building even in a facility with an obstacle on the ground such as an existing building. The purpose is to provide a construction method.

According to the present invention for solving the above problems, a pair of tracks provided on both side walls of a building, a crane garter provided so as to be movable over the pair of tracks arranged above the pair of tracks, and a fence provided on the crane garter, using an overhead crane having a trolley the installed Re travel freely provided et the upper rails off click is suspended on the crane garter, the altitude of the building A method of constructing a long member, wherein a fence having vertical rails and horizontal rails is attached above the trolley, and a scaffolding board serving as a footing for workers is installed on the rail to set a work stage. Mounting, a step of constructing a part of the member within the range of the work stage, and a step of moving the work stage are sequentially repeated to construct a long member at a high place of the building, the ceiling. An aerial construction method using a crane is provided.

In the aerial work method of the present invention, there are a plurality of long members extending in the same direction, and the work stage is reciprocally moved in the longitudinal direction of the long member for each system to perform the work. The construction may be performed when the stage moves forward, and the construction may be confirmed when the work stage moves backward. Further, there are a plurality of long members extending in the same direction, reciprocating the working stage in a direction intersecting with the long member, performing work when the working stage moves forward, By repeating the confirmation of the construction at the time of the return movement, it is possible to construct the long members of a plurality of systems simultaneously.

The work stage can be moved by an operator on the crane garter operating a remote control switch. Further, the work stage may be attached to a handrail provided on the carriage. Further, the long member is provided in a plurality of systems in a direction orthogonal to the crane garter, and after operating a part of the long member within the range of the work stage, the work stage is moved. Then, the following part may be constructed .

According to the present invention, by sequentially repeating the step of constructing a part of the member within the range of the work stage attached to the truck and the step of moving the work stage, it is possible to extend the length of ducts, pipes, etc., over the entire height of the building. Scale members can be constructed. In addition, since the work is performed within the range of the work stage, the work space immediately above the work stage becomes the work space, so preparatory work such as sheets for fall prevention can be omitted, even in facilities with obstacles on the ground such as existing buildings. , It becomes possible to construct long objects such as ducts and pipes all over the high places of the building.

It is a front view of the building which implements the high-place construction method which concerns on embodiment of this invention. It is a top view which shows the positional relationship of the branch duct which is an example of the elongate member constructed in the high place of a building, and an overhead crane. It is explanatory drawing of the work stage attached to the trolley|bogie. It is explanatory drawing of one aspect of the moving procedure of a work stage. It is explanatory drawing of another aspect of the moving procedure of a work stage.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. In the present specification and the drawings, elements having substantially the same functional configuration are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIG. 1, on the ceiling of the building 1, a ceiling truss 11 that supports the roof 10 is constructed. An overhead crane 2 that horizontally moves below the ceiling truss 11 is installed above the inside of the building 1.

Tracks (runways) 16 are attached to the walls 15 on both sides of the building 1, and wheels 18 mounted on the left and right sides of a crane garter 17 of the overhead crane 2 are mounted on the tracks 16. The crane garter 17 of the overhead crane 2 travels on the track 16 by the rotation of the wheels 18, and horizontally moves in the direction perpendicular to the paper surface of FIG. 1 (vertical direction in the paper surface of FIG. 2).

The upper surface of the crane gutter 17 is surrounded by the fence 20, and an operator can walk on the upper surface of the crane gutter 17. As shown in FIG. 2, a rail 21 extending in the longitudinal direction of the crane gutter 17 is installed on the upper surface of the crane gutter 17. The longitudinal direction of the crane gutter 17 is the left-right direction of the paper surface in FIGS. 1 and 2, and the rail 21 is installed on the upper surface of the crane gutter 17 along the entire length in the longitudinal direction.

A carriage (club trolley) 22 traveling on a rail 21 is mounted on the upper surface of the crane gutter 17. As shown in FIG. 3, the cart 22 has a configuration in which a winding unit unit 24 is mounted on a base unit 23, and a handrail 25 is further mounted on the winding unit unit 24. Wheels 30 are attached to the lower portion of the base portion 23, and by traveling on the rails 21 with the wheels 30, the truck 22 is movable along the entire length in the longitudinal direction on the upper surface of the crane garter 17.

A motor 31 is built in the hoisting unit 24, and the wire 32 is hoisted by the operation of the motor 31 to raise and lower the hook 33 suspended on the carriage 22. The operation of the motor 31 (the raising and lowering of the hook 33) is operated by the remote control switch 34. The traveling of the carriage 22 on the upper surface of the crane gutter 17 is also operated by the remote control switch 34.

A work stage 40 on which a worker a can ride is mounted on the carriage 22. The work stage 40 has a structure in which a scaffold plate 41 is surrounded by a fence 42. In this embodiment, the work stage 40 is attached in contact with the handrail 25 provided on the upper portion of the carriage 22, and the upper end of the work stage 40 exceeds the height of the handrail 25.

By using, for example, a single pipe pipe as the vertical rails 42a and the horizontal rails 42b of the fence 42 of the work stage 40, by attaching the vertical rails 42a (single pipe pipe) of the rail 42 to the handrail 25 provided on the upper portion of the carriage 22, A work stage 40 is fixed on the carriage 22. In this case, the work stage 40 is erected inside and outside the fence 42. That is, the vertical rails 42a of the fence 42 are arranged inside and outside the handrail 25, and the vertical rails 42a arranged inside the handrail 25 are in contact with the inside of the handrail 25 and are stretched from the inside to the outside. Make sure that the stage 40 does not laterally shift.

The horizontal rail 42b of the fence 42 is fixed to the vertical rail 42a by using an orthogonal clamp. If measures against shaking during an earthquake are taken into consideration, it is advisable to tighten the vertical rails 42a and the horizontal rails 42b of the fence 42, which are in contact with the handrail 25, with clamps or rails.

The scaffolding plate 41 is formed by assembling the horizontal rails 42b of the fence 42 in a lattice shape at an appropriate height (for example, a position near the height of 1 m from the upper surface of the crane gutter 17), and is placed thereon. It may be bridged via a hook or the like. By adjusting the height of the scaffolding board 41 by straddling the horizontal rails 42b to an appropriate height of the vertical rails 42a, a space can be formed between the upper surface of the handrail 25 and the scaffolding board 41 does not contact the upper part of the hoisting unit portion 24.

Since the work stage 40 is attached to the carriage 22 via the handrail 25, the work stage 40 moves on the upper surface of the crane garter 17 as the carriage 22 travels. A commercially available elevating step 43 is hung on the work stage 40 for the worker a to go up and down.

Here, as an example of the embodiment of the present invention, a case where the duct 3 is constructed in the high place of the building 1 by using the overhead crane 1 will be described. The illustrated duct 3 has a configuration in which a main duct 50 provided on the ceiling truss 11 is connected with branch ducts 51a, 51b, 51c of three systems arranged in parallel with each other. The illustrated main duct 50 is connected to an exhaust filter provided outdoors, and the duct 3 is an exhaust duct. Although not shown, a blower is provided near the exhaust filter.

Further, each branch duct 51a, 51b, 51c is connected to the main duct 50 via a falling duct 52 (elbow joint) as a connecting member. That is, the main duct 50 is laid inside the ceiling truss 11 on the scaffolding board laid on the ceiling truss 11, and the branch ducts 51a, 51b, 51c are installed on a height surface about 3 m lower than the main duct 50. .. The installation position of each branch duct 51a, 51b, 51c is directly below the ceiling truss 11. In addition, the construction of the falling duct 52 is performed by dividing the falling duct 52 into upper and lower pieces each having a height of about 1.5 m, bolting the upper end of the upper piece to the main duct 50, and then inserting it through a flange. , The upper end of the lower piece is bolted to the lower end of the upper piece. Further, the connecting work of the upper piece and the lower piece is performed on the work stage 40.

The branch ducts 51a, 51b, 51c of the three systems are extended in parallel from the portion connected to the main duct 50 so as to extend in the same direction toward the room along the ceiling of the building 1. In the embodiment of the present invention, the branch ducts 51a, 51b, 51c are constructed by the worker a on the work stage 40.

Construction of these branch ducts 51a, 51b, 51c is performed by stopping the work stage 40 at a desired position and constructing a part of the branch ducts 51a, 51b, 51c within the range of the work stage 40. It is performed by alternately repeating the moving step. That is, in the construction process, the work stage 40 is stopped at a desired position, and the worker a on the work stage 40 constructs part of the branch ducts 51a, 51b, 51c within the reach of the worker.

Then, when the process of constructing a part of the branch ducts 51a, 51b, 51c within the range of the work stage 40 is completed, the work stage 40 is moved to the next position. The process of moving the work stage 40 can be performed by the operator a on the crane garter 17 by operating the remote control switch 34.

The crane garter 17 of the overhead crane 2 can move from one end to the other above the building 1 by traveling on the track 16, and the carriage 22 can move the entire length in the longitudinal direction on the upper surface of the crane garter 17. Is. Therefore, by alternately repeating the step of constructing a part of the branch ducts 51a, 51b, 51c within the range of the work stage 40 attached to the carriage 22 and the step of moving the work stage 40, the building 1 It is possible to construct three systems of branch ducts 51a, 51b, 51c, which are long members, over the entire high place. Further, since the step of constructing a part of the branch ducts 51a, 51b, 51c at each position is performed within the range of the work stage 40, the construction work space is directly above the work stage 40, so that a fall prevention sheet, etc. It is possible to omit the preparatory work, and it is possible to construct the branch ducts 51a, 51b, 51c of the three systems in the entire high place of the building 1, even in a facility such as an existing building that has an obstacle on the ground.

In addition, the number of personnel required to construct such branch ducts 51a, 51b, 51c is one crane operator located near the work site, one supervisor on the ground (both are in contact by transceiver), and on the work stage 40. A worker a who works in the fence 42 is scheduled. If only duct 3 is installed, 4 to 6 people. If duct 3 is an air supply duct, or if a necessary fluid that requires heat insulation flows through duct 3, if the duct worker does not have the heat insulation coating skill, the same number. Alternatively, the heat insulating work may be arranged on the crane garter 17 to alternate the work on the work stage 40.

Further, the remote control switch 34 has a function of transmitting a signal for reciprocating the crane garter 17 and the carriage 22 of the overhead crane 2. Moreover, the remote control switch 34 transmits a signal for instructing the lifting and lowering of the hook 33 for lifting and lowering the load. Although the remote control switch 34 also has other functions, in order to prevent accidents due to erroneous operations, settings other than those for instructing these three operations can be changed in advance so as to invalidate instructed operations such as touch. desirable. Further, during the transfer of the crane gutter 17 and the trolley 22, the worker a descends from the work stage 40, puts a safety belt on the fence 20 surrounding the upper surface of the crane gutter 17, and stands by.

Here, for example, the following two modes are conceivable as the manner of laying the branch ducts 51a, 51b, 51c of these three systems and the procedure of moving the work stage 40.

One aspect of the moving procedure is a procedure in which the work stage 40 is reciprocally moved in the longitudinal direction for each branch duct 51a, 51b, 51c of each system, and the branch ducts 51a, 51b, 51c of each system are sequentially installed. .. As an example, as shown in FIG. 4, a case will be described in which the branch duct 51a is first installed, the branch duct 51b is installed second, and the branch duct 51c is installed third.

First, the work stage 40 is moved to the connection position A1 of the first branch duct 51a with respect to the main duct 50. Then, at this position A1, first, the falling duct 52 is connected to the main duct 50, and further, the base end portion of the first branch duct 51a is connected to the falling duct 52. In addition, the construction of the falling duct 52 is performed by dividing the falling duct 52 into upper and lower pieces each having a height of about 1.5 m, bolting the upper end of the upper piece to the main duct 50, and then inserting it through a flange. , The upper end of the lower piece is bolted to the lower end of the upper piece. Then, in the construction work space on the work stage 40, a duct piece that is a part of the branch duct 51 a is connected to the lower end of the falling duct 52.

Next, the work stage 40 is moved by the width of the work stage 40 (the length of the work stage 40 in the direction in which the branch duct 51a extends), and is moved to the next position A2. Then, in this placement A2, the duct pieces that are a part of the branch duct 51a are sequentially connected, and the first branch duct 51a is extended by the width of the work stage 40. These operations are similarly performed in the construction work space on the work stage 40.

After that, by repeating the same operation, the work stage 40 is moved to the position An of the tip portion of the branch duct 51a, and the duct piece is connected to the position An so that the first branch duct 51a having a predetermined length is formed. It will be constructed. After that, the work stage 40 is returned in the order of positions An,..., Position A2, and position A1. In this way, when the work stage 40 is returned from the position An to the position A1, the construction confirmation is performed for each part of the branch duct 51a at each position An,..., Position A2, position A1.

In this way, the work stage 40 is reciprocally moved along the longitudinal direction (extension direction) of the first branch duct 51a, and the branch duct 51a is sequentially constructed when the work stage 40 moves forward. The construction and confirmation of the first branch duct 51a is completed by confirming the construction during the return movement.

After the construction and confirmation of the first branch duct 51a are completed in this way, the work stage 40 is then moved to the connection position B1 of the second branch duct 51b with respect to the main duct 50. Then, similarly, first, the falling duct 52 is connected to the main duct 50, and then the duct pieces that are a part of the branch duct 51b are sequentially connected at each position B1, B2,..., Bn to have a predetermined length. The second branch duct 51b is constructed. Similarly, when the work stage 40 is returned from the position Bn to the position B1, the construction confirmation is performed for each part of the branch duct 51b at each position Bn,..., Position B2, and position B1.

In this way, the work stage 40 is reciprocally moved along the longitudinal direction (extension direction) of the second branch duct 51b, and the branch duct 51b is sequentially constructed when the work stage 40 moves forward, so that the work stage 40 The construction and confirmation of the second branch duct 51b are completed by confirming the construction during the return movement.

Further, similarly, the work stage 40 is reciprocally moved along the longitudinal direction (extending direction) of the third branch duct 51c, and the branch duct 51c is sequentially constructed when the work stage 40 moves forward. The construction and the confirmation of the second branch duct 51c are completed by confirming the construction when the stage 40 moves back.

In this way, the branch ducts 51a, 51b, and 51c of three systems, which are long structures, are constructed at a high place of the building 1 according to one mode of movement procedure.

Next, as another aspect of the moving procedure, the work stage 40 is reciprocated in a direction intersecting with the branch ducts 51a, 51b, 51c of the respective systems, and the branch ducts 51a, 51b, 51c of the three systems are simultaneously constructed. It is a procedure to do.

As shown in FIG. 5, first, the work stage 40 is moved to the connection position A1 of the first branch duct 51a with respect to the main duct 50. Then, at this position A1, first, the falling duct 52 is connected to the main duct 50, and further, the base end portion of the first branch duct 51a is connected to the falling duct 52. In addition, the construction of the falling duct 52 is performed by dividing the falling duct 52 into upper and lower pieces each having a height of about 1.5 m, bolting the upper end of the upper piece to the main duct 50, and then inserting it through a flange. , The upper end of the lower piece is bolted to the lower end of the upper piece. Then, in the construction work space on the work stage 40, a duct piece that is a part of the branch duct 51 a is connected to the lower end of the falling duct 52.

Next, the work stage 40 is moved to the connection position B1 of the second branch duct 51b with respect to the main duct 50. Then, at this position B1, the falling duct 52 is connected to the main duct 50, and further, the base end portion of the second branch duct 51b is connected to the falling duct 52. Note that the construction of the falling duct 52 is performed by the upper and lower pieces, as in the case of the position A1, and the duct piece forming a part of the branch duct 51b is connected to the lower end of the falling duct 52.

Next, the work stage 40 is moved to the connection position C1 of the third branch duct 51c with respect to the main duct 50. Then, at this position C1, the falling duct 52 is connected to the main duct 50, and further, the base end portion of the third branch duct 51c is connected to the falling duct 52. As in the case of the positions A1 and B1, the construction of the falling duct 52 is performed by the upper and lower pieces, and the duct piece which is a part of the branch duct 51c is connected to the lower end of the falling duct 52.

In this way, the construction of the base end portions of the three-system branch ducts 51a, 51b, 51c is completed. After that, the work stage 40 is returned in the order of the position C1, the position B1, and the position A1. In this way, when the work stage 40 is returned from the position C1 to the position A1, at each of the positions C1, B1, and A1, confirmation of the construction is performed for each base end portion of the branch ducts 51a, 51b, 51c of the three systems. I do.

In this way, the work stage 40 is reciprocated in the direction intersecting with the branch ducts 51a, 51b, 51c of each system, and when the work stage 40 moves forward, the base end portions of the branch ducts 51a, 51b, 51c of the three systems are moved. Construction is performed, and the construction is confirmed when the work stage 40 moves back.

Then, after the construction and confirmation of the respective base end portions of the branch ducts 51a, 51b, 51c of the three systems are completed, next, the work stage 40 is moved to the width of the work stage 40 (the work stage 40 in the direction in which the branch duct 51a extends). The length of the first branch duct 51a is moved to a position A2 next to the first branch duct 51a. Then, at this position A2, the duct pieces forming a part of the branch duct 51a are sequentially connected, and the first branch duct 51a is extended by the width of the work stage 40. These operations are similarly performed in the construction work space on the work stage 40.

Next, the work stage 40 is caused to travel in a direction intersecting with the branch ducts 51a, 51b, 51c of each system, and the work stage 40 is moved to the position B2 next to the second branch duct 51b. Then, at this position B2, the duct pieces forming a part of the branch duct 51b are sequentially connected, and the second branch duct 51b is extended by the width of the work stage 40. These operations are similarly performed in the construction work space on the work stage 40.

Next, the work stage 40 is moved in a direction intersecting the branch ducts 51a, 51b, 51c of each system, and the work stage 40 is moved to the position C2 next to the third branch duct 51c. Then, at this position C2, the duct pieces forming a part of the branch duct 51c are sequentially connected, and the third branch duct 51c is extended by the width of the work stage 40. These operations are similarly performed in the construction work space on the work stage 40.

In this way, the construction of the next portion in each of the three branch ducts 51a, 51b, 51c is completed. Then, the work stage 40 is returned to the position C2, the position B2, and the position A2 in this order. In this way, when the work stage 40 is returned from the position C2 to the position A2, at each position C2, position B2, and position A2, confirmation of the construction of the next portion in each of the three branch ducts 51a, 51b, 51c is confirmed. I do.

After that, while repeating the same operation, the branch ducts 51a, 51b of the three systems are repeatedly installed and confirmed up to the positions An, Bn, Cn of the tip portions of the branch ducts 51a, 51b, 51c of the three systems. , 51c construction and confirmation is completed.

In this way, according to another mode of the moving procedure, the branch ducts 51a, 51b, 51c of three systems, which are long members, are simultaneously installed at a high place of the building 1.

Which of the two movement procedures described above is used depends on the balance with the work on the ground. That is, if the work that may be suspended during the construction of the branch ducts 51a, 51b, 51c is set as the moving direction of the crane garter 17, the former can be selected, and if the work is set in the direction orthogonal to the moving direction of the crane garter 17, the latter can be selected. .. In addition, when the latter movement procedure is adopted, the fence 42 of the work stage 40 is temporarily moved in order to prevent the fence 42 of the work stage 40 from being laterally moved by being obstructed by the branch ducts 51a, 51b, 51c that have been constructed. It may be troublesome to remove it, and these are also factors to consider when selecting a construction method. In the trial of the inventor, a single branch duct of about 50 m was laid by the former transfer procedure (without heat insulation, including suction port installation described later), but no nighttime work was included. I need it.

The lifting of the upper and lower pieces of the falling duct 52 and the duct pieces of the branch ducts 51a, 51b, and 51c is performed by, for example, a worker who places each member on the loading platform of a truck-type aerial work vehicle and arranges it on the overhead crane 2. It is delivered to and from the vehicle and placed on the track (runway) 16. When the aerial work vehicle cannot be entered, a temporary winch may be provided in advance on the steel frame of the building 1 along the overhead crane 2 and each member temporarily placed at a predetermined position may be lifted. The temporary winch can be installed on the existing steel frame by a worker crossing the catwalk in the ceiling truss 11.

Further, in constructing the branch ducts 51a, 51b, 51c, it is necessary to support the duct pieces (branch ducts 51a, 51b, 51c) on the ceiling truss 11 with hanging bolts or steel materials. In this case, the existing steel material can be used for support. First, prior to the construction of the branch ducts 51a, 51b, 51c, a steel material such as a hanging bolt is hung on the ceiling truss 11. That is, a metal fitting is attached to the flange of the structural steel of the ceiling truss 11. This metal fitting has a groove to be fitted in the flange portion and is fixed by tightening an attached bolt, and a general-purpose product such as S-HBRH of Negros Electric Works Co., Ltd. can be used. The duct piece is laid on the suspension bolt and the duct receiver set in the bolt hole of this metal fitting.

Further, the inventor mainly used a duct piece having a length of 900 mm, and in one construction process on the work stage 40, four duct pieces were extended, and the construction range of one unit was 3600 mm. The suspension pitch of steel material was 3 m. However, in the vicinity of the main duct 50, the branch ducts 51a, 51b, 51c become thicker and the duct pieces become thicker and heavier. Therefore, the division width of the duct pieces and the hanging pitch are made small. On the other hand, it goes without saying that the duct pieces may be thinned at the tip ends of the branch ducts 51a, 51b, 51c far from the blower. It should be noted that 3600 mm, which is the construction range of one unit, is about half the width of the crane gutter 17, and the work stage 40 may be moved in small steps according to the progress of work, or the width of the crane gutter 17 may be moved by about half each. Alternatively, the movement may be performed twice in one construction unit.

Further, the above-described embodiment exemplifies an exhaust duct as the duct 3, and suction ports for sucking indoor air are provided on the lower surfaces (inside the room) of the branch ducts 51a, 51b, 51c. If the suction port is manufactured integrally with the duct piece and transported by truck, the suction port may be damaged. Therefore, it is preferable that a duct piece to which a short pipe for connecting the suction port is attached is manufactured in a factory, and the suction port separately carried in is dug up. If the duct 3 is an air-conditioning air supply duct, a blowout port is provided instead of the suction port. A general air control port such as HS as the suction port and VHS as the air outlet can be adopted, but it may be replaced with a wire mesh, or slits may be formed on the lower surface of each branch duct 51a, 51b, 51c along the longitudinal direction. In some cases, the opening may be sufficient.

In addition, as a seismic anti-sway of the duct 3, a structure using a C-shaped steel bolt or a method of assembling the bolt material in a bracing manner with the suspension bolt can be adopted.

In addition, in the work for confirming the construction, for example, it is confirmed whether or not the bolt nuts of the flange have been forgotten to be tightened. Here, if a sealer is applied to the protruding portion of the bolt thread at the time of connecting the duct piece, the confirmation can be done only by visual inspection. Sealer application is recommended as it has a marking effect as well as a screw lock effect.

Although the embodiments of the present invention have been illustrated and described above, the present invention is not limited to such examples. It is obvious to those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and of course, the technical scope of the present invention is also applicable to them. Understood to belong to.

In the above embodiment, the size of the main duct 50 is large and exceeds 1 m particularly in the height direction, and if this construction method is adopted for construction of the main duct 50, it interferes with the ceiling truss 11 (in the upper space of the overhead crane 2). Therefore, the branch ducts 51a, 51b, and 51c are planned to be installed below the ceiling truss 11, but if the construction environment and conditions permit, all of the ducts 3 may be implemented by this method.

Further, for example, in the above embodiment, an example is shown in which the branch ducts 51a, 51b, 51c are laid along the reciprocating movement direction of the crane garter 17, but the longitudinal direction of the crane garter 17 may be the working area. Therefore, it is also possible to take a branch from the branch ducts 51a, 51b, 51c and construct a branch small-diameter duct in a direction horizontal or eccentric with the crane garter 17. Further, as the long member, piping such as SGP can be installed. In this case, the piping unit may be one in which a pipe through which a different fluid such as cold water, hot water, a CFC-based refrigerant, and a drain flows is attached to the frame material. The pipe types there are bundled with different types such as copper pipes for refrigerants and vinyl pipes.

Further, as an accessory of the member, there may be an air flow measuring port for the duct or a measuring instrument such as a thermometer. If a damper for a duct and a valve for a pipe are automatically controlled, a unit equipped with a motor and a signal receiver may be used. The most precise members are carried into the site separately from the main unit and assembled on a crane. The same applies to wiring work for automatic control.

If independent equipment is scattered at high places in the building 1, work using aerial work vehicles may be possible, but the work range is wide, and ducts and piping work that causes continuous work in the vicinity The present invention is particularly effective.

1 Building 2 Ceiling Crane 3 Duct 10 Roof 11 Ceiling Truss 15 Wall 16 Track 17 Crane Garter 18 Wheel 20 Fence 21 Rail 22 Bogie 23 Base Unit 24 Hoisting Unit 25 Handrail 30 Wheel 31 Motor 32 Wire 33 Hook 34 Remote Control Switch 40 Work Stage 41 Scaffolding board 42 Fence 42a Vertical bar 42b Horizontal bar 43 Lifting step 50 Main ducts 51a, 51b, 51c Branch duct 52 Falling duct a Worker

Claims (6)

A pair of tracks provided on the walls on both sides of the building, a crane garter which is arranged so as to straddle the pair of tracks and is movable on the track, a fence provided on the crane garter, and the crane a carriage the installed Re et disposed for free travel on rails off click is suspended garter, using an overhead crane with a method of installing a member of the elongate in altitude of the building ,
A fence having vertical rails and horizontal rails is attached above the carriage, and a scaffolding board serving as a foothold for workers is installed on the fence to attach a work stage,
A step of constructing a part of a member within the range of the work stage and a step of moving the work stage are sequentially repeated to construct a long member at a high place of the building, High-place construction method used. There are multiple long members that extend in the same direction,
For each system, reciprocating the working stage in the longitudinal direction of the long member,
Performing construction when moving the work stage on the outward path,
The method for constructing a high place using an overhead crane according to claim 1, wherein the construction is confirmed when the work stage is moved back. There are multiple long members that extend in the same direction,
Reciprocating the working stage in a direction intersecting the long member,
By performing the construction at the time of the forward movement of the work stage, and by repeating the confirmation of the construction at the time of the return movement of the work stage, it is possible to construct a long member of a plurality of systems simultaneously. The method for constructing a high place using the overhead crane according to claim 1. The method for constructing a high place using an overhead crane according to claim 1, wherein the work stage is moved by an operator on a crane garter operating a remote control switch. A vertical rail using a ceiling crane according to any one of claims 1 to 4, characterized in that a vertical rail constituting the fence of the work stage is attached to a handrail provided on the carriage. Construction method. The long member is provided in a plurality of systems in a direction orthogonal to the crane garter, and after operating a part of the long member within the range of the work stage, the work stage is moved to the next position. The method for constructing a high place using the overhead crane according to any one of claims 1 to 5, wherein a part of the above is constructed .

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