JP2023129823A - Piping unit, working carriage, and construction method - Google Patents

Abstract

To install vertical piping extending over a plurality of floors for each of the floors in a building without the usage of a crane by a smaller number of workers than before.SOLUTION: A piping unit 1 for installing vertical piping extending over a plurality of floors for each of the floors in a building includes a base 10 installed on a floor slab of an installation target floor, a pair of rails 21, 22 attached to the base 10 and extending upward from the base 10 in parallel with each other, a first holding member 30 engaged with the pair of rails 21, 22 and holding piping 8, and a second holding member 40 arranged adjacently to the first holding member 30 and holding piping 9. The first holding member 30 can be moved to the upper side of the rails 21, 22, and the second holding member 40 can be moved to a position under the first holding member 30 when the first holding member 30 is moved to the upper side of the rails 21, 22 in a state of holing the piping 8.SELECTED DRAWING: Figure 1

Description

The present invention relates to a piping unit installed on each floor in a building, a work trolley used for construction thereof, and a method for constructing the piping unit.

In buildings with multiple floors, the outdoor unit for air conditioning is installed on the rooftop, and piping (vertical piping) is used to connect the outdoor unit to the air conditioners (e.g. indoor units) installed on each floor. will be installed vertically across multiple floors. Conventionally, a riser unit construction method is known as a construction method for this type of piping (for example, Patent Document 1). The riser unit method is to aggregate multiple pipes processed in a factory into a unit, transport the unitized pipes to the building construction site by truck, and transport the unitized pipes at the construction site using a crane. This is a construction method in which the structure is hoisted up and lowered into place inside the building where the framework is being constructed.

JP2013-139828A

However, conventional construction methods use cranes installed at the construction site, which requires a large number of workers, and delays in the process due to time-consuming installation of piping, which can lead to delays in the overall construction work. There is a problem of influence.

Therefore, the present invention provides a piping unit that can be installed on each floor by a smaller number of workers than before without using a crane, a work trolley used for the construction, and a piping unit that can be installed on each floor by a smaller number of workers than before. The purpose is to provide a construction method.

In order to achieve the above object, firstly, the present invention provides a piping unit for installing vertical piping across multiple floors in a building for each floor, the base being installed on the floor slab of the floor to be installed. and a pair of rail parts that are attached to the base and extend upward from the base in parallel to each other at a predetermined interval in the left-right direction; a first holding member that holds first piping arranged in the left-right direction, and a second holding member that is attached to the base adjacent to the first holding member and arranged vertically. a second holding member that holds the pipes arranged in the left-right direction; the first holding member is movable along the pair of rail parts to the upper part of the pair of rail parts; The second holding member is movable to a position below the first holding member when the first holding member is moved to the upper part of the pair of rail parts while holding the first pipe. , the upper end of the second pipe can be joined to the lower end of the first pipe.

Second, in the piping unit having the first configuration, the second holding member has left and right sides engaged with guide portions extending in the front-rear direction provided on both left and right sides of the base. and is movable to a position below the first holding member along the guide part when the first holding member is moved to the upper part of the pair of rail parts while holding the first piping. This is a configuration characterized by the following.

Thirdly, in the piping unit having the first or second configuration, the first holding member holds the upper end of the first piping to an upper floor when the first holding member moves to the upper part of the pair of rail parts. This configuration is characterized by being inserted into an opening formed in a floor slab.

Fourthly, in the piping unit having any one of the first to third configurations, the base is installed so as to surround an opening formed in a floor slab of the installation target floor, and the base is installed so as to surround an opening formed in a floor slab of the installation target floor, and When the second holding member moves to a position below the first holding member, the second holding member may join the lower end of the second pipe to the upper end of the pipe installed on the lower floor that protrudes upward from the opening. This configuration is characterized by the following features:

Fifth, the present invention provides a piping unit having any one of the first to fourth configurations, wherein casters are attachable to one of the left and right sides of the base, and the base This configuration is characterized in that the device can be carried to the installation target floor by laying it down on its side and bringing the casters into contact with the ground.

Sixthly, in the piping unit having any of the first to fifth configurations, the first holding member holds the first electric cable together with the first piping, and the second holding member holds the first electric cable together with the first piping. The member holds a second electric cable together with the second pipe, and connects the upper end of the second electric cable to the lower end of the first electric cable when moved to a position below the first holding member. This configuration is characterized in that it is possible to

Seventhly, the present invention provides a work trolley used when installing a piping unit having any one of the first to sixth configurations on an installation target floor, the work trolley surrounding the base of the piping unit. A trolley body that can be arranged as shown in FIG. It is possible to move the piping unit to the installation location by moving the trolley body while lifting the piping unit, and after installing the piping unit at the installation location, the pair of lifting The structure is characterized in that the first holding member can be moved to the upper part of the pair of rail parts by means of lifting the first holding member.

Eighthly, the present invention provides a working trolley having the seventh configuration, in which the trolley main body includes a pair of beams disposed on the front side and a rear side of the base of the piping unit, respectively, and The lifting means includes a first connecting beam that connects one ends of the beams to each other, and a second connecting beam that connects the other ends of the pair of beams to each other. This configuration is characterized in that it can be attached to each of the first connecting beam and the second connecting beam.

Ninthly, in the working trolley having the eighth configuration, the center portion of at least one of the pair of beams is provided at a higher position than both end portions, and the installation target floor This structure is characterized by being movable above piping installed on the lower floor that protrudes upward from an opening formed in the floor slab.

Tenthly, the present invention provides a construction method for installing a piping unit having any one of the first to sixth configurations, comprising: carrying the piping unit in a horizontal position to a floor to be installed; changing the posture of the piping unit from the horizontal position to the standing position; lifting the piping unit in the standing position and moving the piping unit to the installation location; and moving the base of the piping unit to the installation location. a step of moving the first holding member to an upper part of the pair of rail parts by lifting the first holding member along the pair of rail parts; and a step of moving the first holding member to the upper part of the pair of rail parts; a step of moving the holding member to a lower position; and a step of connecting the lower end of the first pipe held by the first holding member and the upper end of the second pipe held by the second holding member. This configuration is characterized by having the following features.

According to the present invention, it is possible to install piping units on each floor with a smaller number of workers than in the past, without using a crane at a construction site.

FIG. 2 is a perspective view showing an example of the configuration of a piping unit. It is a figure showing a base and a rail part. It is a figure showing a 1st holding member. It is a figure which shows the 2nd holding member. It is a figure which shows the state which moved the 1st holding member to the upper part of a rail part. It is a figure showing the state where the 2nd holding member was moved to the lower position of the 1st holding member. FIG. 2 is a diagram showing a working trolley used when constructing a piping unit. FIG. 2 is a diagram showing a working trolley used when constructing a piping unit. It is a figure which shows the state before a work trolley is attached to the piping unit in a sideways posture. It is a figure showing the state where the work trolley is attached to the piping unit, and the state where the piping unit is lifted. It is a figure which shows the state which rotated the piping unit and made it into an upright posture. It is a figure which shows the state which lifts up a piping unit and moves it to an installation location. It is a figure which shows the state which attached the hook of a lifting means to the 1st holding member. FIG. 7 is a diagram showing a state in which the lifting means lifts the first holding member to the upper part of the rail part. It is a figure showing the state where a walkway floor is attached to a base. It is a side view which shows the piping unit which attached the walkway floor.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In each of the drawings referred to below, common members are given the same reference numerals, and overlapping explanations thereof will be omitted.

FIG. 1 is a perspective view showing a piping unit 1 in an embodiment of the present invention. This piping unit 1 is a unit in which a plurality of pipes (vertical pipes) arranged vertically across a plurality of floors of a building are aggregated, and a plurality of pipes can be installed on each floor. For example, the piping unit 1 can be installed one floor at a time from the lower floor to the upper floor in a newly constructed building.

This piping unit 1 includes a base 10 in which a plurality of frame members 11 are formed into a rectangular parallelepiped shape by welding or the like, and a pair of frames attached to the base 10 and extending above the base 10 in parallel to each other. rail parts 21 and 22, a first holding member 30 disposed inside the base 10, and a second holding member 40 disposed adjacent to the first holding member 30 inside the base 10. ing. The first holding member 30 and the second holding member 40 are members that hold a plurality of pipes 8 and 9 installed in the vertical direction inside the building. These pipes 8 and 9 are refrigerant pipes for air conditioning, and are used to circulate refrigerant between the outdoor unit installed on the roof of the building and the air conditioner (for example, indoor unit) installed on each floor. It's plumbing. The length of each of the pipes 8 and 9 held by the first holding member 30 and the second holding member 40 is, for example, a length obtained by dividing the length from the floor slab of the installation target floor to the floor slab of the upper floor into two. is formed as. The first holding member 30 and the second holding member 40 are capable of holding the plurality of pipes 8 in a state where they are arranged side by side in the left-right direction. Further, the first holding member 30 and the second holding member 40 hold the electric cables 39 and 49 together with the pipes 8 and 9. These electric cables 39 and 49 are cables for transmitting and receiving electric signals between an outdoor unit installed on the roof of a building and an air conditioner (for example, an indoor unit) installed on each floor.

FIG. 2 is a diagram showing the base 10 and the pair of rail parts 21 and 22. The base 10 has a plurality of frame members 11 made of steel such as angle iron or channel steel assembled into a rectangular parallelepiped shape by welding or the like, and has an upper opening 12 and a lower opening 13. The depth dimension of the base 10 in the front-rear direction is smaller than the width dimension in the left-right direction, and is smaller than the depth dimension of a temporary elevator installed at a construction site, for example, so that it can be loaded onto the temporary elevator. The height of the base 10 may be approximately half the length of the pipes 8 and 9 held by the first holding member 30 and the second holding member 40, for example.

Such a base 10 is installed in a state where it is fixed to a floor slab of the floor on which it is installed. Since the base 10 has high rigidity, it has a steady resting function that suppresses the pipes 8 and 9 from vibrating greatly in the lateral direction, for example, in the event of an earthquake.

The pair of rail portions 21 and 22 are fixed by welding or the like on both rear left and right sides inside the base 10, and extend further upward from the upper opening 12 of the base 10. The height of the pair of rail portions 21 and 22 is, for example, approximately 1.5 to 3 times higher than the height of the base 10, although it depends on the ceiling height of the floor to be installed. Therefore, a connecting member 25 that connects the pair of rail parts 21 and 22 to each other is installed at a predetermined height position above the base 10, and holds the pair of rail parts 21 and 22 in a parallel state. . Further, a slit 23 extending in the vertical direction is formed on the front side of each rail portion 21, 22. The slit 23 is continuously formed from the lower end to the upper end of the rail parts 21 and 22. Furthermore, ring-shaped engaging parts 24, 24 are provided at the upper ends of the pair of rail parts 21, 22.

Guide portions 15 are provided on both left and right side surfaces of the base 10, which are arranged in the horizontal direction (front-back direction). For example, the guide portion 15 is formed of a metal plate having a horizontally (front-to-back) elongated guide hole 15a formed at a central height position. Such guide portions 15 are installed at two locations on both left and right sides of the base 10: a first height position and a second height position higher than the first height position. . Further, a ring-shaped engagement portion 16 is provided at the upper part of the guide portion 15 installed at the first height position.

A caster mounting portion 14 is provided on one of the left and right sides of the base 10 to which a caster 19 (see FIG. 9), which will be described later, can be mounted. Note that FIG. 2 shows an example in which the caster attachment portion 14 is provided on the right side surface of the base 10.

Further, support members 17 are attached to both the front and rear surfaces of the base 10, which extend horizontally. For example, the support member 17 is attached at a central height position of the base 10. The support member 17 has both left and right ends fixed to the pillars of the base 10, and a ring-shaped engagement portion 18 is provided at the center position in the left and right direction.

FIG. 3 is a diagram showing the first holding member 30. As shown in FIG. The first holding member 30 has a pair of holding parts 31 and 32 arranged at a predetermined interval in the left-right direction inside the base 10. The pair of holding parts 31 and 32 are made of, for example, a steel material having a U-shaped cross section, and are arranged to face each other. Moreover, the pair of holding parts 31 and 32 are long in the vertical direction, and connecting members 33 extending in the horizontal direction (left-right direction) are connected to three places, the upper part, the center part, and the lower part. They are integrated by a connecting member 33 so as to maintain a parallel state at a predetermined distance from each other. Note that the number of locations where the connecting member 33 is disposed is not limited to three locations, but may be two or more locations.

The first holding member 30 holds the pipe 8 by attaching the pipe 8 (first pipe) to a plurality of connecting members 33 that are horizontally suspended between the pair of holding parts 31 and 32. That is, the first holding member 30 can be assembled by attaching the piping band 34 to the outer peripheral surface of the piping 8 with the piping 8 attached to the connecting member 33, and fixing both ends of the piping band 34 to the connecting member 33. Hold the pipe 8. Further, the first holding member 30 can hold a plurality of pipes 8 between the pair of holding parts 31 and 32. For example, since three refrigerant pipes 8a, 8b, 8c are installed on one floor, the first holding member 30 holds the three refrigerant pipes 8a, 8b, 8c bundled together in the pipe band 34. It is fixed to the connecting member 33 by. Note that each of the refrigerant pipes 8a, 8b, and 8c has a structure in which the outer peripheral surface of a copper pipe is coated with a heat insulating material. The first holding member 30 can arrange a bundle of such refrigerant pipes 8a, 8b, and 8c side by side in the left-right direction, and can hold the pipes 8 for a plurality of floors.

Further, the first holding member 30 holds an electric cable 39 (first electric cable) together with the piping 8. That is, the first holding member 30 has a cylindrical sleeve 38 together with the pipe 8 fixed to the connecting member 33 by the pipe band 34, and holds the electric cable 39 inserted inside the sleeve 38. This electric cable 39 is a cable that electrically connects an air conditioner (for example, an indoor unit) to which the pipes 8 bundled by the pipe band 34 are connected, and an outdoor unit. As shown in enlarged view A1 of FIG. 3, the upper end of the electric cable 39 extends from the upper end opening of the sleeve 38, and a connector 39a is provided at the tip thereof. Further, as shown in the enlarged view A2 of FIG. 3, the lower end of the electric cable 39 extends from the lower end opening of the sleeve 38. When the electric cable 39 is longer than the piping 8, it is preferable to hold the electric cable 39 in a wound state using a binding band or the like. A connector 39b is provided at the lower end of the electric cable 39.

Furthermore, the first holding member 30 is provided with engaging metal fittings 35 and 36 at two positions, one in the center and one below the pair of holding parts 31 and 32. These engagement fittings 35 and 36 are attached to the outer side surfaces of the pair of holding parts 31 and 32.

The engaging metal fitting 35 is attached to the center of the pair of holding parts 31 and 32. This engagement tool 35 has a flat joint part 35a that is joined to the front surfaces of the rail parts 21 and 22, and the joint part 35a is engaged with the slit 23 formed in the front surface of the rail parts 21 and 22. An engaging portion 35b is provided. This engaging portion 35b is constituted by a fastening member consisting of, for example, a bolt and a nut. That is, the engaging portion 35b has a shaft portion that protrudes to the rear side of the joint portion 35a, and the shaft portion is inserted into the slit 23 of the rail portions 21 and 22, and a nut is attached to the tip of the shaft portion. As a result, the rail portions 21 and 22 are engaged with each other. When the bolt and nut are loosely tightened, the engagement fitting 35 is not fixed to the rail parts 21 and 22. Therefore, the engagement fitting 35 is slidable along the longitudinal direction of the slit 23 of the rail portions 21 and 22. Moreover, when the bolt and nut are tightly tightened, the engaging fitting 35 is fixed to the rail parts 21 and 22.

The engaging metal fitting 36 is attached to the lower part of the pair of holding parts 31 and 32. This engagement fitting 36 also has a flat joint part 36a joined to the front surfaces of the rail parts 21 and 22, and the joint part 36a is engaged with the slit 23 formed in the front surface of the rail parts 21 and 22. An engaging portion 36b is provided. This engaging portion 36b is configured by a fastening member made of, for example, a bolt and a nut, as described above. That is, the engaging portion 36b has a shaft portion that protrudes to the rear side of the joint portion 36a, and the shaft portion is inserted through the slit 23 of the rail portions 21 and 22, and a nut is attached to the tip of the shaft portion. As a result, the rail portions 21 and 22 are engaged with each other. When the bolt and nut are loosely tightened, the engagement fitting 36 is not fixed to the rail parts 21 and 22. Therefore, the engagement fitting 36 is slidable along the longitudinal direction of the slit 23 of the rail portions 21 and 22. Moreover, when the bolt and nut are tightly tightened, the engagement fitting 36 is fixed to the rail parts 21 and 22. This engagement fitting 36 is provided with a ring-shaped engagement portion 37 .

FIG. 4 is a diagram showing the second holding member 40. As shown in FIG. The second holding member 40 has a pair of holding parts 41 and 42 arranged at a predetermined interval in the left-right direction inside the base 10. The pair of holding parts 41 and 42 are made of, for example, a steel material having a U-shaped cross section, and are arranged to face each other. Moreover, the pair of holding parts 41 and 42 are long in the vertical direction, and connecting members 43 extending in the horizontal direction (left-right direction) are connected to three places, the upper part, the center part, and the lower part. They are integrated by a connecting member 43 so as to maintain a parallel state at a predetermined distance from each other. Note that the number of locations where the connecting member 33 is disposed is not limited to three locations, but may be two or more locations.

The second holding member 40 holds the pipe 9 by attaching the pipe 9 (second pipe) to a plurality of connecting members 43 that are horizontally suspended between the pair of holding parts 41 and 42. That is, the second holding member 40 can be achieved by attaching the piping band 44 to the outer peripheral surface of the piping 9 with the piping 9 attached to the connecting member 43, and fixing both ends of the piping band 44 to the connecting member 43. Hold the pipe 9. Further, the second holding member 40 can hold a plurality of pipes 9 between the pair of holding parts 41 and 42. That is, like the first holding member 30, the second holding member 40 is fixed to the connecting member 33 by the pipe band 34 in a state where three refrigerant pipes 9a, 9b, 9c installed on one floor are bundled together. do. The second holding member 40 can arrange a bundle of such refrigerant pipes 9a, 9b, and 9c side by side in the left-right direction, and can hold the pipes 9 for a plurality of floors. Note that the pipe diameters of the refrigerant pipes 9a, 9b, and 9c are the same as the pipe diameters of the refrigerant pipes 8a, 8b, and 8c, respectively.

Further, the second holding member 40 holds an electric cable 49 (second electric cable) together with the piping 9. That is, the second holding member 40 has a cylindrical sleeve 48 together with the pipe 9 fixed to the connecting member 33 by the pipe band 44, and holds the electric cable 49 inserted inside the sleeve 48. This electric cable 49 is a cable that electrically connects an air conditioner (for example, an indoor unit) to which the pipes 9 bundled by the pipe band 44 are connected, and an outdoor unit. As shown in the enlarged view B1 of FIG. 4, the upper end of the electric cable 49 extends from the upper end opening of the sleeve 48, and a connector 49a is provided at the tip thereof. Further, as shown in the enlarged view B2 of FIG. 4, the lower end of the electric cable 49 extends from the lower end opening of the sleeve 48. When the electric cable 49 is longer than the piping 9, it is preferable to hold the electric cable 49 in a wound state using a binding band or the like. A connector 49b is provided at the lower end of the electric cable 49.

Further, the second holding member 40 is provided with engaging metal fittings 45 and 46 at two positions, one in the center and one below the pair of holding parts 41 and 42. These engaging fittings 45 and 46 are attached to the outer side surfaces of the pair of holding parts 41 and 42.

The engaging metal fitting 45 is attached to the center of the pair of holding parts 41 and 42. Moreover, the engaging metal fitting 46 is attached to the lower part of the pair of holding parts 41 and 42. These engaging fittings 45 and 46 have the same shape and engage with guide portions 15 provided on both left and right side surfaces of the base 10. That is, the engagement tool 45 has a flat joint part 45a that is joined to the inner surface of the guide part 15 provided at the upper part of both left and right side surfaces of the base 10, and the joint part 45a has a joint part 45a formed on the guide part 15. An engaging portion 45b that engages with the guide hole 15a in the front-rear direction is provided. Further, the engagement fitting 46 has a flat plate-shaped joint part 46a that is joined to the inner surface of the guide part 15 provided at the lower part of both left and right side surfaces of the base 10. An engaging portion 46b that engages with the guide hole 15a in the front-rear direction is provided. These engaging portions 45b, 46b are configured by fastening members made of bolts and nuts, for example. That is, the engaging portions 45b, 46b have shaft portions that protrude outside the joint portions 45a, 46a, and the shaft portions are inserted into the guide holes 15a of the guide portions 15, and nuts are attached to the tips of the shaft portions. By doing so, it engages with the guide portion 15. When the bolts and nuts are loosely tightened, the engagement fittings 45 and 46 are not fixed to the guide portion 15. Therefore, the engaging metal fittings 45 and 46 are slidable along the longitudinal direction (back and forth direction) of the guide hole 15a of the guide portion 15. Further, when the bolt and nut are tightly tightened, the engaging fittings 45 and 46 are fixed to the guide portion 15.

In the piping unit 1 configured as described above, as shown in FIG. Engagement fittings 35 and 36 provided on the rails are engaged with the slits 23 of the pair of rail parts 21 and 22. Further, in the piping unit 1, a second holding member 40 that holds the pipe 9 is arranged on the front side of the base 10, and engaging fittings 45 and 46 provided on both left and right sides of the second holding member 40 are attached to the base. 10 guide portions 15 are engaged with each other.

Such a piping unit 1 is assembled in a factory in the state shown in FIG. 1, transported to a construction site, and transported to a floor to be installed using a temporary elevator installed at the construction site. When transported to the installation target floor, the piping unit 1 is installed at the installation location. The piping unit 1 is then fixed in a state in which the first holding member 30 is moved along the pair of rail parts 21, 22 to the upper part of the pair of rail parts 21, 22, as shown in FIG. As shown in FIG. 5, when the first holding member 30 moves to the upper part of the pair of rail parts 21 and 22, a space is formed below the first holding member 30 in which the second holding member 40 can be accommodated. Therefore, in the piping unit 1, after the first holding member 30 is fixed to the upper part of the pair of rail parts 21 and 22, the second holding member 40 is moved to the rear side of the base 10 along the guide part 15. is possible. As shown in FIG. 6, the piping unit 1 is fixed in a state in which the second holding member 40 is moved downward from the first holding member 30, so that the piping 8 held by the first holding member 30 and The pipe 9 held by the second holding member 40 can be arranged on a straight line in the vertical direction, and the upper end of the pipe 9 can be joined to the lower end of the pipe 8.

Next, a work trolley for efficiently carrying out the above-mentioned work at a construction site will be described. FIGS. 7 and 8 are diagrams showing a working trolley 2 used when constructing the piping unit 1 described above. This work trolley 2 can be arranged so as to surround the base 10 of the piping unit 1, and is arranged so as to face a trolley body 60 having casters 63 attached to the lower surface thereof and the upper surface side of the trolley body 60. A pair of lifting means 71 and 72 are provided.

The truck body 60 has a pair of beams 61 and 62 arranged to face each other on the front side and the rear side of the base 10 of the piping unit 1, and interconnects one ends of the pair of beams 61 and 62. and a second connecting beam 65 that connects the other ends of the pair of beams 61 and 62 to each other. Casters 63 are attached to the lower surfaces of both ends of the pair of beams 61 and 62. The casters 63 are equipped with wheels that can turn around a vertical axis, and support the work cart 2 so as to be movable in any direction.

For example, the first connecting beam 64 is fixed to one end of the pair of beams 61, 62 by welding or the like, and is attached to the pair of beams 61, 62 in a non-removable state. On the other hand, the second connecting beam 65 is attached to the other ends of the pair of beams 61, 62 by a fastening member 66 consisting of a bolt and a nut, so that it can be attached to and detached from the pair of beams 61, 62. When the second connecting beam 65 is attached to the other ends of the pair of beams 61 and 62, the truck body 60 has a rectangular shape in plan view. Further, when the second connecting beam 65 is removed from the other end of the pair of beams 61, 62, the other end of the pair of beams 61, 62 is opened, so that the truck body 60 becomes U-shaped in plan view.

Moreover, one beam 62 of the pair of beams 61 and 62 is configured as an arch-shaped (gate-shaped) beam. That is, the beam 62 is provided at a position where the center portion 62a is higher than both end portions 62b, 62b. Although FIGS. 7 and 8 show an example in which only one beam 62 of the pair of beams 61 and 62 is arch-shaped, both beams 61 and 62 may be configured as arch-shaped. do not have.

The truck body 60 can be fitted with lifting means 71, 72 fitted into the center of the upper surface of each of the pair of beams 61, 62, the first connecting beam 64, and the second connecting beam 65. A sleeve 68 is provided. The pair of lifting means 71 and 72 are fitted into their sleeves 68 and fixed to the truck body 60 with screws or the like.

The pair of lifting means 71 and 72 are configured by, for example, a manual lifting device. The lifting means 71 and 72 are provided with an opening 73 at the upper front side of a casing 70 having a predetermined height, and an operating handle 79 at the back side of the casing 70. The operating handle 79 rotates the winder 78 provided inside the housing 70 in the R direction. An end of a cable 74 such as a chain or wire rope is connected to the winder 78 . Therefore, when the operating handle 79 is rotated in the R direction, the winder 78 rotates together with the operating handle 79 to wind up or let out the cable 74. For example, the operating handle 79 is provided with a switchable one-way clutch, and has a structure that prevents the operating handle 79 from rotating in the opposite direction even if the operating handle 79 is released during a winding operation or a feeding operation. The cable 74 extending from the winder 78 is hung on a pulley 77 attached to the upper part of the housing 70, and a hook 75 is provided at the tip thereof. The hook 75 hangs down from the opening 73 of the housing 70 to the front side of the lifting means 71 and 72. Furthermore, the pulley 77 can be attached to and detached from an engaging portion 76 provided at the upper part of the housing 70.

The lower portions of the lifting means 71 and 72 as described above can be fitted into a sleeve 68 provided on the truck body 60, and the front surfaces provided with the openings 73 are placed opposite each other on the upper surface side of the truck body 60. It will be installed in the same condition. For example, as shown in FIG. 7, the lifting means 71 and 72 are fitted into sleeves 68 provided on the upper surfaces of the pair of beams 61 and 62 with their respective front sides facing inside of the work trolley 2. It can be fixed in a closed position. Further, as shown in FIG. 8, the lifting means 71 and 72 are provided on the upper surfaces of the first connecting beam 64 and the second connecting beam 65, with their respective front sides facing inside the work trolley 2. It is also possible to fix it by fitting it into the sleeve 68. That is, the working trolley 2 is configured such that the installation positions of the lifting means 71 and 72 relative to the trolley body 60 can be easily changed between the position shown in FIG. 7 and the position shown in FIG. 8.

Next, a procedure for constructing the piping unit 1 using the work trolley 2 as described above will be explained. First, the piping unit 1 is assembled at a factory, and then the casters 19 are attached to the caster attachment portions 14 provided on the side surface of the base 10. Then, as shown in FIG. 9, the posture of the piping unit 1 is changed to a state in which the base 10 is laid down and the casters 19 are grounded. This piping unit 1 is loaded onto a truck in a horizontal position and transported to a construction site. When arriving at the construction site, the piping unit 1 is unloaded from the truck while lying on its side, and transported to the installation target floor using a temporary elevator at the construction site. In other words, the piping unit 1 of this embodiment can be transported to the installation target floor without using a crane at the construction site. Therefore, the piping unit 1 can be transported to the installation target floor with fewer people than when using a crane.

When the piping unit 1 is carried to the installation target floor, a work cart 2 is prepared as shown in FIG. At this time, the second connecting beam 65 of the work truck 2 is removed from the truck body 60. Further, the lifting means 71 and 72 are installed on the upper surfaces of the pair of beams 61 and 62, as shown in FIG. Then, the work trolley 2 is moved in the direction indicated by the arrow F1, and the piping unit 1 is inserted inside the open end of the pair of beams 61 and 62. Thereby, the base 10 of the piping unit 1 is housed between the pair of beams 61 and 62.

FIG. 10A shows a state in which the base 10 of the piping unit 1 is accommodated between a pair of beams 61 and 62 of the work trolley 2. At this time, each of the lifting means 71 and 72 of the work trolley 2 is in a state opposite to the front and rear surfaces of the base 10, respectively. In this state, the second connecting beam 65 is attached to the truck body 60 to increase the rigidity of the working truck 2.

Subsequently, the hooks 75 of the lifting means 71 and 72 are engaged with the engaging portions 18 provided on both the front and rear surfaces of the base 10. Then, the operating handles 79 of the lifting means 71 and 72 are simultaneously rotated in a predetermined direction to wind up the cable 74. As a result, as shown in FIG. 10(b), the piping unit 1 is lifted up by the lifting means 71, 72 of the working trolley 2.

After the piping unit 1 is lifted up to a predetermined height, the piping unit 1 is then rotated as shown in FIG. 11 to change the posture of the piping unit 1 from the horizontal position to the standing position. Thereafter, by rotating the operating handles 79 of the lifting means 71 and 72 in the opposite direction to the above while maintaining the upright position of the piping unit 1, the cables 74 are let out and the piping unit 1 is lowered to the floor. Temporarily place it on the surface. When the piping unit 1 is temporarily placed on the floor, the casters 19 attached to the side surface of the base 10 are removed. Further, the lifting means 71 and 72 are removed from the pair of beams 61 and 62 and installed on the upper surfaces of the first connecting beam 64 and the second connecting beam 65. Then, the hooks 75 of the lifting means 71 and 72 are engaged with the engaging portions 16 provided on both left and right side surfaces of the base 10. At this time, if the casters 19 are removed first, the casters 19 will not get in the way when the hook 75 is engaged with the engaging portion 16, improving work efficiency.

Thereafter, the operating handles 79 of the lifting means 71 and 72 are simultaneously rotated in a predetermined direction to wind up the cable 74 again. As a result, as shown in FIG. 12, the piping unit 1 is lifted up again by the lifting means 71, 72 of the working trolley 2. Then, with the piping unit 1 held up, the work trolley 2 is moved to the installation location 90 of the piping unit 1 as shown by arrow F2.

As shown in FIG. 12, an opening 91 is formed in the floor slab at the installation location 90 of the piping unit 1 on the installation target floor, and the upper end of the piping 93 installed on the lower floor protrudes upward from the opening 91. ing. The base 10 of the piping unit 1 is fixed to anchors 92 installed around the opening 91 thereof.

Here, in the truck main body 60 of the work truck 2, the arch-shaped beam 62 is provided with its center portion 62a located higher than the upper end of the pipe 93 that projects upward from the opening 91. When the lifting means 71 and 72 lift the piping unit 1, they lift it until the bottom of the base 10 is at a higher position than the center part 62a of the arched beam 62. Thereby, when moving the work trolley 2 in the direction of arrow F2, the beam 62 and the base 10 do not interfere with the pipe 93 protruding upward from the opening 91. That is, the arch-shaped beam 62 and the base 10 move above the pipe 93 in the direction of arrow F2. The piping unit 1 can then be moved to a position above the opening 91.

When the piping unit 1 is moved to a position above the opening 91, the operating handles 79 of the lifting means 71, 72 are operated, and the piping unit 1 is lowered to the installation location 90. Then, the bottom peripheral edge of the base 10 is fixed to the anchor 92. Thereby, the base 10 is installed so as to surround the opening 91. Further, by fixing the base 10 to the floor slab with the anchors 92, the base 10 becomes an integral structure with the frame (floor slab).

After installing the base 10 of the piping unit 1 at the installation location 90, as shown in FIG. A pulley 77 is attached to 24. Further, the hooks 75 of the lifting means 71 and 72 are engaged with engagement portions 37 provided on the engagement fittings 36 on both the left and right sides of the first holding member 30. After loosening the bolts and nuts of the engaging portions 35b and 36b, the operating handles 79 of the lifting means 71 and 72 are simultaneously rotated in a predetermined direction to wind up the cable 74. Thereby, the lifting means 71 and 72 can raise the first holding member 30 along the rail parts 21 and 22.

FIG. 14 shows a state in which the first holding member 30 has been raised to a predetermined height position. As shown in FIG. 14, the lifting means 71 and 72 are capable of lifting the first holding member 30 along the rail parts 21 and 22 until the engagement fitting 35 reaches a position near the upper end of the rail parts 21 and 22. can. As shown in FIG. 14, when the first holding member 30 is raised, the bolts and nuts of the engaging parts 35b and 36b are tightened, and the first holding member 30 is fixed to the rail parts 21 and 22. Thereby, the pipe 8 held by the first holding member 30 is fixed to the upper part of the rail parts 21 and 22, and a steady rest effect is also provided. That is, the pipe 8 is fixed to the rail parts 21 and 22 with sufficient seismic performance.

When the first holding member 30 can be fixed to the upper part of the rail parts 21, 22, the hook 75 is removed from the engaging part 37, and the pulley 77 is removed from the engaging part 24 of the rail parts 21, 22. Then, the second connecting beam 65 of the working truck 2 is removed from the truck main body 60, and the working truck 2 is removed from around the piping unit 1. Thereby, the piping unit 1 will be in the state shown in FIG. 5. Thereafter, by loosening the bolts and nuts of the engaging parts 45b and 46b provided on both left and right sides of the second holding member 40, and moving the second holding member 40 toward the rear side of the base 10 along the guide part 15. , the second holding member 40 is arranged below the first holding member 30, as shown in FIG. Then, the bolts and nuts of the engaging portions 45b and 46b are tightened to fix the second holding member 40 to the base 10. By fixing the second holding member 40 to the base 10, the piping 9 held by the second holding member 40 is also fixed to the base 10, and a steady rest effect is also provided. That is, the pipe 9 is fixed to the base 10 with sufficient seismic performance.

When the second holding member 40 is fixed at a position below the first holding member 30, an empty space is created on the front side of the upper part of the base 10. It is possible to install a walkway floor in this empty space. FIG. 15 is a perspective view showing an example in which a hallway floor 81 is attached to the upper front side of the base 10. Moreover, FIG. 16 is a side view showing the piping unit to which the walkway floor 81 is attached. As shown in FIGS. 15 and 16, the walkway floor 81 is fixed to a frame member 11 placed at the upper end of the base 10. As shown in FIGS. By attaching the walkway floor to the upper part of the base 10, when connecting the lower end of the pipe 8 and the upper end of the pipe 9 by brazing or the like, a worker can ride on the walkway floor 81 as shown in FIG. can perform the work. Further, when connecting the connector 39b provided at the lower end of the electric cable 39 and the connector 49a provided at the upper end of the electric cable 49, the user can ride on the walkway floor 81 and perform the connection work. Therefore, there is an advantage that the work of connecting the pipes 8 and 9 and the work of connecting the electric cables 39 and 49 can be performed efficiently. Furthermore, since the work performed while riding on the walkway floor 81 involves work at a height, it is preferable to attach a handrail 82 to the walkway floor 81.

On the other hand, the lower end of the pipe 9 is connected to the upper end of a pipe 93 installed on the lower floor. Moreover, the connector 49b provided at the lower end of the electric cable 49 is connected to the connector provided at the upper end of the electric cable bundled together with the piping 93 installed on the lower floor.

When the piping unit 1 is installed at the installation location 90 as described above, the upper end of the piping 8 is inserted into the opening 96 formed in the floor slab 95 of the upper floor, and further upward from the opening 96. It stands out. Furthermore, the connector 39a provided at the upper end of the electric cable 39 also protrudes upward from an opening 96 formed in the floor slab 95 of the upper floor. Therefore, by proceeding with the same steps as above on the upper floor, a similar piping unit 1 can be installed on the upper floor as well.

As described above, the piping unit 1 according to the present embodiment has a configuration in which vertical piping can be installed on each floor across multiple floors in a building. This piping unit 1 is formed into a rectangular parallelepiped shape and includes a base 10 having an upper opening 12 and a lower opening 13. It is formed so as to be supported while being inserted into the lower opening 13. The piping unit 1 fixes the pipes 8 and 9 installed vertically inside the building to the base 10 and the pair of rail parts 21 and 22, so the piping unit 1 fixes the pipes 8 and 9 in the horizontal direction when an earthquake occurs. It is possible to suppress vibrations. In other words, since the piping unit 1 of this embodiment exhibits the function of preventing the piping 8 and 9 from steadying when installed on the floor to be installed, after the piping unit 1 is installed, the function of preventing the piping 8 and 9 from steadying is performed. There is no need to perform separate work, and work efficiency is excellent.

In addition, the piping unit 1 has a first holding member 30 and a second holding member 40 arranged adjacent to each other in the front-rear direction inside the base 10. Each of the pipes 8 and 9 has a length obtained by dividing the length of one floor into two, thereby reducing the size when transported from the factory to the installation target floor at the construction site. Therefore, it is possible to transport the product to the installation target floor using a temporary elevator without using a crane installed at the construction site, and the number of workers can be kept small.

Further, the working trolley 2 used when installing the piping unit 1 is moved to the installation location 90 by moving the trolley body 60 with the pair of lifting means 71 and 72 lifting the piping unit 1. After the piping unit 1 is installed at the installation location 90, the pair of lifting means 71, 72 lifts the first holding member 30, so that the first holding member 30 can be moved to the pair of rails. It is possible to move it to the upper part of parts 21 and 22. If such a work trolley 2 is used, the number of people required to install the piping unit 1 can be kept to about 3 to 4 people, which has the advantage of being able to perform construction efficiently at low cost.

Furthermore, in the piping unit 1 of this embodiment, when installing the piping 8, 9 on each floor, the electric cables 39, 49 can also be wired at the same time. Therefore, after installing the piping unit 1, there is no need to separately perform the work of laying electric cables across a plurality of floors, and it is possible to significantly improve work efficiency.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to what has been described in the above embodiments. That is, the present invention includes various modifications of the embodiments described above.

For example, in the embodiment described above, the lifting devices 71 and 72 are manual lift devices. However, the lifting means 71 and 72 are not limited to manual types.

Furthermore, in the embodiment described above, an example was explained in which the casters 19 are attached to the side surface of the base 10 when it is transported from a factory to a floor to be installed at a construction site. However, the above-mentioned work trolley 2 may be used when transporting from the factory to the installation target floor at the construction site. In this case, the work trolley 2 carries the piping unit 1 to the installation target floor in a state where the piping unit 1 is laid down on its side.

Furthermore, in the embodiment described above, the first connecting beam 64 is fixed to one end of the pair of beams 61 and 62 by welding or the like in the truck main body 60 of the work truck 2, and is not detachable. However, the present invention is not limited to this, and the first connecting beam 64 may be configured to be detachable from the pair of beams 61 and 62, similarly to the second connecting beam 65.

DESCRIPTION OF SYMBOLS 1... Piping unit, 2... Work trolley, 8, 9... Piping, 10... Base, 15... Guide part, 19... Caster, 21, 22... Rail part, 30... First holding member, 39... Electric cable ( (first electrical cable), 40... second holding member, 49... electrical cable (second electrical cable), 60... trolley body, 61, 62... beam, 63... caster, 64... first connecting beam, 65... Second connecting beam, 71, 72...lifting means (lifting device).

Claims (10)

A piping unit that installs vertical piping for each floor across multiple floors in a building,
A base installed on the floor slab of the floor to be installed,
a pair of rail parts attached to the base and extending upward from the base in parallel to each other at a predetermined interval in the left-right direction;
a first holding member that is attached to the pair of rail parts in an engaged state and holds the first pipes arranged in the vertical direction in a state in which they are lined up in the left-right direction;
a second holding member that is attached to the base in a state adjacent to the first holding member and holds second pipes arranged in the vertical direction in a state in which they are lined up in the left-right direction;
Equipped with
The first holding member is movable along the pair of rail parts to the upper part of the pair of rail parts,
The second holding member is movable to a position below the first holding member when the first holding member is moved to the upper part of the pair of rail parts while holding the first pipe. A piping unit characterized in that the upper end of the second piping can be joined to the lower end of the first piping. The second holding member has left and right sides engaged with guide portions extending in the front-rear direction provided on both left and right side surfaces of the base, and the first holding member holds the first pipe. The piping unit according to claim 1, wherein the piping unit is movable along the guide portion to a position below the first holding member when the piping unit is moved to the upper part of the pair of rail portions. Claim 1, wherein when the first holding member moves to the upper part of the pair of rail parts, the upper end of the first pipe is inserted into an opening formed in the upper floor slab. Or the piping unit according to 2. The base is installed so as to surround an opening formed in a floor slab of the installation target floor,
When the second holding member moves to a position below the first holding member, the lower end of the second pipe is joined to the upper end of the pipe installed on the lower floor projecting upward from the opening. 4. The piping unit according to claim 1, wherein the piping unit is capable of: Casters can be attached to one of the left and right sides of the base,
The piping unit according to any one of claims 1 to 4, wherein the piping unit can be transported to the installation target floor by laying down the base and grounding the casters. The first holding member holds a first electric cable together with the first piping,
The second holding member holds a second electric cable together with the second piping, and when moved to a position below the first holding member, the upper end of the second electric cable is connected to the first electric cable. 6. The piping unit according to claim 1, wherein the piping unit can be connected to the lower end of the piping unit. A working trolley used when installing the piping unit according to any one of claims 1 to 6 on a floor to be installed,
a trolley body that can be arranged to surround the base of the piping unit and has casters attached to its lower surface;
a pair of lifting means arranged opposite to each other on the upper surface side of the truck body;
Equipped with
It is possible to move the piping unit to the installation location by moving the trolley body with the pair of lifting means lifting the piping unit, and after installing the piping unit at the installation location. The work trolley is characterized in that the pair of lifting means can lift the first holding member to move the first holding member to the upper part of the pair of rail parts. The trolley body is
a pair of beams arranged on the front side and the rear side of the base of the piping unit, respectively;
a first connecting beam that interconnects one ends of the pair of beams;
a second connecting beam that interconnects the other ends of the pair of beams;
Equipped with
The work trolley according to claim 7, wherein the lifting means can be attached to each of the pair of beams, the first connecting beam, and the second connecting beam. At least one of the pair of beams is installed on a lower floor where the center portion is provided at a higher position than both end portions and projects upward from an opening formed in a floor slab of the installation target floor. 9. The work trolley according to claim 8, wherein the work trolley is movable above the pipe. A construction method for installing the piping unit according to any one of claims 1 to 6, comprising:
a step of transporting the piping unit to the installation target floor in a horizontal position;
changing the posture of the piping unit from the horizontal position to a standing position;
lifting the piping unit in the upright position and moving the piping unit to an installation location;
fixing the base of the piping unit to the installation location;
moving the first holding member to an upper part of the pair of rail parts by lifting the first holding member along the pair of rail parts;
moving the second holding member to a position below the first holding member;
connecting the lower end of the first piping held by the first holding member and the upper end of the second piping held by the second holding member;
A construction method characterized by having.

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