JP4721199B2 - Formwork unit for constructing elevator hoistway bottom end and method for constructing elevator hoistway lower end - Google Patents

Description

The present invention relates to a formwork unit for constructing the lowest end part of an elevator hoistway, and in particular, a formwork unit for constructing the lowest end part of an elevator hoistway and a lower end part of the elevator hoistway used for constructing the bottom end part of the elevator hoistway. It is related with the construction method of a department .

  The pit at the lowermost end portion of the elevator hoistway is formed by hitting a reinforced concrete wall body and a bottom board in the field as described in Patent Document 1 below, for example. Such reinforced concrete walls and bottoms are formed by combining a large number of formwork panels to form a formwork panel row, and placing concrete in a portion surrounded by the formwork panel row.

Utility Model Registration No. 3078195

  However, in the pit formation method described in Patent Document 1, it is necessary to remove the formwork panel after the concrete has dried, and it takes a lot of time and labor to remove the formwork panel.

  In addition, the formwork panel cannot be removed until the concrete is dry, and since various elevator parts are installed in the elevator hoistway after the formwork panel is removed, it takes a long time to install the elevator. It has become.

The present invention has been made to solve such a problem, and its purpose is to construct the lowest end of the elevator hoistway without lowering time and labor. It is to provide a building form unit and a building method for the lower end of the elevator hoistway .

The first feature is a hexahedron-shaped grid having six faces in which steel frames are combined in a grid, and a frame plate that is fixed to the grid and covers the other five faces except for one face facing upward. And is installed at the lowest end of the elevator hoistway construction pothole, and concrete is cast around it, so that the bottom and wall surfaces at the lowermost hoistway are formed by the frame plate covering the five surfaces. It is a formwork unit for the elevator hoistway lowest end part construction.
The second feature is that a hexahedral lattice body having six faces in which steel frames are combined in a lattice form, and a frame plate fixed to the lattice body and covering the other five faces except for one upward face. The elevator hoistway lowermost-end construction formwork unit is installed at the lowermost end of the elevator hoistway construction pothole, and the elevator hoistway lowermost-end construction formwork unit is installed in the surrounding concrete. And constructing the elevator hoistway lowermost end to construct an elevator hoistway lower end.
The third feature is a hexahedron-shaped lattice body having six faces obtained by combining steel frames in a lattice shape, and a frame plate that is fixed to the lattice body and covers the other five faces except for one upward face, Elevator hoistway building form unit comprising an opening formed in a portion of the frame plate facing the elevator hall and a removable detachable frame plate that closes the opening. Installing the formwork panel on the ceiling part of the elevator hall, forming a region for placing concrete for forming the ceiling of the elevator hall, In the state where the formwork unit for lower end construction is installed and the area for placing concrete to form the ceiling of the elevator hall is formed, concrete is placed around and A step of constructing a beta hoistway lowermost end, a method for constructing a elevator shaft bottom end with a.

  According to the present invention, when constructing the lowermost end portion of the elevator hoistway by placing concrete, there is no need to remove the formwork panel after placing the concrete inside the lowermost end portion of the elevator hoistway. The time and labor required for constructing the lowermost end part of the elevator hoistway can be reduced, and the period required for the installation work of the elevator can be shortened.

It is a perspective view which shows a part which shows the elevator hoistway lowest end part construction form unit of the 1st Embodiment of this invention. It is a longitudinal cross-sectional view which shows the elevator hoistway lowermost part construction formwork unit which was installed in the lowermost end part of the elevator hoistway construction pothole, and concrete was cast around it. It is a perspective view which shows the elevator hoistway bottom end part formwork unit of the 2nd Embodiment of this invention. It is a side view which shows the form unit for an elevator hoistway bottom end part construction | installation installed in the lowest end part of the shaft for elevator hoistway construction, and the formwork panel installed in the circumference | surroundings. It is a side view which shows the concrete placed in the circumference | surroundings and the elevator hoistway lower end part construction form unit installed in the lowermost end part of the elevator hoistway construction pothole. It is a perspective view which shows the elevator hoistway bottom end part formwork unit of the 3rd Embodiment of this invention. It is a perspective view which shows the elevator hoistway bottom end part formwork unit of the 4th Embodiment of this invention. It is a perspective view which shows the form unit for the elevator hoistway bottom end part construction | assembly of the 5th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the elevator hoistway bottom form construction form unit 1 has a hexahedron-shaped lattice body 2 having six faces obtained by combining steel frames in a lattice shape, and is fixed to the lattice body 2 so as to face upward. The frame plate 3 covers the other five surfaces (four side surfaces and one lower surface) excluding one surface (upper surface).

  As the frame plate 3, for example, an iron plate, a gypsum board, a lightweight concrete plate or the like is used. Further, for example, bolts, rivets or the like are used for fixing the frame plate 3 to the lattice body 2.

  As shown in FIG. 2, the elevator hoistway lowermost-end construction formwork unit 1 is installed at the lowermost end of the elevator hoistway construction dredging hole 4 formed at a construction site where the elevator is installed. And the concrete lower end part of the elevator hoistway is placed around the elevator hoistway lowermost part construction formwork unit 1 installed at the lowermost end of the elevator hoistway eaves hole 4 so that the lowermost end of the elevator hoistway is Has been built.

  In such a configuration, the elevator hoistway lowermost end construction formwork unit 1 is installed at the lowermost end of the elevator hoistway construction pothole 4, and the installed elevator hoistway lowermost end construction formwork unit 1 is surrounded by By placing concrete 5 on the bottom, the lowermost end of the elevator hoistway can be constructed.

  And when constructing the lowest end part of this elevator hoistway, it is not necessary to use the formwork panel used when constructing the lowermost end part of the conventional elevator hoistway, and after placing concrete The work of removing the formwork panel does not occur.

  Therefore, the time and labor required for constructing the lowermost end portion of the elevator hoistway can be reduced, and the period required for the elevator installation work can be shortened.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. Note that, in the second embodiment and other embodiments described below, the same components as those of the embodiments described above are denoted by the same reference numerals, and redundant descriptions are omitted.

  The basic configuration of the elevator hoistway bottom form construction unit 1A of the second embodiment is the same as the elevator hoistway bottom form construction form unit 1 of the first embodiment, and is different. These are the point in which the opening 6 is formed in the elevator hoistway lowermost end construction form unit 1A, and the removable frame plate 7 that closes the opening 6 is attached.

  The opening 6 is formed in the frame plate 3 of the elevator hoistway bottom end construction mold unit 1A, and the elevator hoistway bottom end construction formwork unit 1A is the bottom end of the elevator hoistway construction coffin hole 4. Is installed at a position facing the elevator hall 8 provided on a certain floor.

  As the removal frame plate 7, for example, an iron plate, a gypsum board, a lightweight concrete plate or the like is used. In addition, for example, bolts, rivets or the like are used to attach the detachment frame plate 7 to the frame plate 3.

  Formwork panels 9 are installed on the ceiling portion of the elevator hall 8, and an area for placing concrete for forming the ceiling 8 a of the elevator hall 8 is formed.

  After the installation of the elevator hoistway lowermost end construction formwork unit 1A at the lowermost end of the elevator hoistway construction dredging hole 4 is finished, concrete casting using the formwork panel 9 on the ceiling portion of the elevator hall 8 is completed. After the formation of the installation area is completed, the concrete 5 is placed. FIG. 5 shows a state in which the concrete 5 is placed, the formwork panel 9 is removed after the placed concrete is dried, and the removal frame plate 7 is removed.

  In such a configuration, the elevator installation work is completed. When the operation of the elevator is started, the opening 6 is used as an elevator boarding gate for getting on and off the elevator car from the elevator hall 8.

  During the installation work of the elevator, such as the installation work of the elevator hoistway lowermost end construction form unit 1A and the concrete 5 placement work, the opening 6 is closed by the removal frame plate 7. . For this reason, it is possible to prevent an accident in which an operator falls from the opening 6 into the elevator hoistway during the installation work of the elevator, and further, dust and dirt can enter the elevator hoistway from the opening 6. Can be prevented.

(Third embodiment)
A third embodiment of the present invention will be described with reference to FIG.

  The basic configuration of the elevator hoistway bottom form building unit 1B of the third embodiment is the same as the elevator hoistway bottom end building form unit 1 of the first embodiment, and is different. Is that the elevator hoistway bottom end construction formwork unit 1B is waterproofed.

  The waterproofing process is performed by applying a waterproof coating 10 on the outer surface of the frame plate 3 or by attaching a waterproof sheet.

  Further, the portion to be waterproofed is at least a portion embedded in the concrete when concrete is placed around the elevator hoistway lowermost end construction formwork unit 1B.

  In such a configuration, since the waterproof treatment is applied to the portion embedded in the cast concrete in the elevator hoistway lowermost end construction formwork unit 1B, the moisture in the soil is the lowermost end of the elevator hoistway. Intrusion can be prevented.

(Fourth embodiment)
A fourth embodiment of the present invention will be described with reference to FIG.

  The basic configuration of the elevator hoistway bottom end part formwork unit 1C of the fourth embodiment is the same as the elevator hoistway bottom end part formwork unit 1 of the first embodiment, and is different. Is the point that the reinforcing member 11 that can be removed is attached to the upper end portion of the lattice body 2 in the elevator hoistway lowermost end construction form unit 1C.

  The reinforcing member 11 is formed in a cross shape with a steel frame, and is attached to the upper surface portion of the lattice body 2 so as to be in a brace.

  The reinforcement member 11 is attached to the lattice body 2 using, for example, bolts.

  In such a configuration, when the elevator hoistway bottom form construction frame unit 1C is lifted using a lifting device to be installed at the bottom end of the elevator hoistway construction coffin hole 4, the elevator hoistway bottom end It is conceivable that the upper part of the part construction mold unit 1C is distorted and deformed. However, by attaching the reinforcing member 11, when the elevator hoistway bottom form construction unit 1C is lifted using a lifting device, the elevator hoistway bottom form construction unit 1C is prevented from being deformed. can do.

  After installing the elevator hoistway lowermost-end construction formwork unit 1C at the lowermost end of the elevator hoistway-building pothole 4, the reinforcing member 11 is removed from the grid body 2, and the elevator hoistway lowermost-end construction formwork A space for raising and lowering the car in the unit 1C is secured.

(Fifth embodiment)
A fifth embodiment of the present invention will be described with reference to FIG.

  The basic configuration of the elevator hoistway bottom form construction frame unit 1D of the fifth embodiment is the same as the elevator hoistway bottom end construction formwork unit 1 of the first embodiment, and is different. Before the elevator hoistway bottom form construction frame unit 1D is installed at the bottom end of the elevator hoistway construction pothole 4, the elevator hoistway bottom end construction formwork unit 1D is connected to the elevator part 12. Is pre-attached.

  Examples of the elevator component 12 include a guide rail, a shock absorber, and a car frame. The elevator parts 12 are attached to the elevator hoistway lowermost-end construction formwork unit 1D, for example, in a factory that manufactures the elevator hoistway lowermost-end construction formwork unit 1D.

  In such a configuration, the elevator parts 12 are attached to the elevator hoistway lowermost-end building form unit 1D, and the elevator hoistway lowermost-end building form unit 1D is installed in the elevator hoistway building eaves hole 4 This can be done before installing at the lower end. For this reason, the operation | work which attaches the components 12 for elevators with respect to the elevator hoistway lower end part construction formwork unit 1D installed in the lowermost end part of the elevator hoistway construction coffin hole 4 can be omitted.

  Therefore, there is no work of attaching the elevator component 12 to the elevator hoistway lowermost end construction formwork unit 1D at the work site where the elevator is installed, and the time required for the elevator installation work can be shortened.

DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C, 1D Elevator hoistway lower end part construction formwork unit 2 Grid body 3 Frame plate 4 Elevator hoistway construction hole 5 Concrete 6 Opening 7 Removal frame plate 8 Elevator hall 11 Reinforcement member 12 Elevator Parts for

Claims (7)

A hexahedron-shaped lattice body having six faces obtained by combining steel frames in a lattice shape;
A frame plate fixed to the lattice body and covering the other five surfaces excluding one upward surface;
Equipped with a,
It is installed at the lowermost end of the elevator hoistway construction pothole, and concrete is cast around it, so that the bottom and wall surfaces at the lowermost hoistway are formed by the frame plate covering the five surfaces. A formwork unit for constructing the lowest end of the elevator hoistway.   2. The elevator hoistway bottom end construction according to claim 1, wherein an opening is formed in a portion of the frame plate that faces the elevator landing, and a removable frame plate that closes the opening is attached. Formwork unit.   The formwork unit for constructing the elevator hoistway bottom end part construction according to claim 1 or 2, wherein a waterproof treatment is applied to a portion of the side plate embedded in the placed concrete.   The formwork unit for constructing the elevator hoistway lowermost end part according to any one of claims 1 to 3, wherein a detachable reinforcing member is attached to an upper part of the lattice body.   The elevator hoistway lowermost end according to any one of claims 1 to 4, wherein an elevator component is attached in advance before being installed at the lowermost end portion of the elevator hoistway construction pothole. Formwork unit for building parts. The lowermost end of an elevator hoistway comprising a hexahedron-shaped lattice body having six faces in which steel frames are combined in a lattice shape, and a frame plate fixed to the lattice body and covering the other five faces except for one face facing upward A step of installing the part building form unit at the lowest end of the elevator hoistway building hole,
  In the state where the elevator hoistway bottom end construction formwork unit is installed, a step of placing concrete around and constructing the elevator hoistway bottom end,
The construction method of the elevator hoistway lower end part characterized by comprising. A hexahedron-shaped lattice body having six faces obtained by combining steel frames in a lattice shape, a frame plate that is fixed to the lattice body and covers the other five surfaces other than one upward surface, and an elevator hall in the frame plate An elevator hoistway bottom end construction formwork unit having an opening formed in a portion directly facing the opening and a removable detachable frame plate that closes the opening is installed at the bottom end of the elevator hoistway construction pothole And a process of
  Installing a formwork panel on a ceiling portion of the elevator hall, and forming a region for placing concrete for forming the ceiling of the elevator hall;
  In the state where the formwork unit for constructing the lowest end of the elevator hoistway is installed and the area for placing concrete for forming the ceiling of the elevator hall is formed, concrete is placed around the elevator hoistway to Building the lower end,
The construction method of the elevator hoistway lower end part characterized by comprising.

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