JP4588826B2 - Installation method of machine roomless elevator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator installation method, and more particularly to a novel machine room-less elevator installation method in which the number of centering reference lines of guide rails of a car frame and a counterweight is reduced.
[0002]
[Prior art]
In general, early elevators have a hoistway that penetrates each layer in the building, a machine room on the roof of the building, and elevator drive equipment is installed in the machine room, and the elevator car installed in the hoistway A counterweight was tied with a rope of a predetermined length, and the rope was hung around a sheave of an elevator drive device in the machine room. A special feature of this construction method is that a machine room is formed at the top of the hoistway, so that if a lift drive device is installed in the machine room, the car frame (car frame) or work table can be lifted and lowered using the drive device. It can be used to center and install guide rails for car frames and counterweights as well as other necessary equipment.
[0003]
However, recent elevators have avoided the provision of a machine room only for elevators on the roof of the hoistway, and a construction method in which the machine room is provided at the lowermost part of the hoistway has been adopted. Therefore, an elevator that does not have a machine room at the top of the hoistway is called a machine room-less elevator. The feature of this construction method is that there is no machine room at the top of the hoistway, so It is necessary to assemble the scaffolding up to the top, center the guide rail, install it, and install other necessary equipment.
[0004]
However, in the construction method of assembling the scaffolding, it is difficult to assemble the scaffolding in the narrow hoistway, and it is not easy to carry the scaffolding material, so in order to solve this, a temporary hoisting at the top of the hoistway The machine is installed, and the main or temporary frame is moved up and down by the hoisting machine, and an operator rides on the frame to center and install the guide rail and install other necessary equipment (NOW method) Called).
[0005]
[Problems to be solved by the invention]
However, in the NOW method, as shown in FIG. 5, the guide rails are centered using templates 20 at the uppermost and lowermost parts of the hoistway 1, respectively, and using the centering reference line 21 such as a piano wire as a reference. Do it hanging down. In addition, as shown in FIG. 6, the number of guide rails 11 is four in total, that is, a pair of two for the car frame 4 and a pair of two for the counterweight 14, and the center of the car frame 4 itself. 2 are also required for use, and a total of at least six centering reference lines 10 are required to be installed vertically. In addition, the laying of the guide rail had to be carried out from the lower floor to the upper floor one after another with the guide rail standing tool standing upright. Therefore, when the hoistway 1 is long, the guide rail centering and laying work consumes labor and time, resulting in high costs.
[0006]
Therefore, the present invention provides a novel machine room-less elevator installation method that can eliminate the disadvantages of the NOW method.
[0007]
[Means for Solving the Problems]
The machine room-less elevator installation method according to the present invention is such that, as described in claim 1 , the uppermost guide rail is fixed to a unit frame assembled integrally with a car frame in a hoistway , and a temporary hoisting machine is used. While raising the car frame together with the guide rail for the uppermost floor, the guide rail necessary for the lower floor is sequentially added to the uppermost guide rail, and at least a pair of centering provided on the unit frame is provided. in that the positioning the front and rear left and right within the hoistway at least a pair of centering units have baseline frame depending from each passage to hoistway top to bottom fixture, performing centering moth Idoreru It is characterized by that.
[0008]
Furthermore, as described in claim 2, the centering jig is characterized in that a mark for projecting the center of the concave portion is formed around the concave portion formed in the front portion of the unit frame .
[0010]
Therefore, the installation work of the centering reference line for centering can be reduced from 6 to 2, so that the man-hours can be reduced and work efficiency can be improved, and the guide rail from the top floor to the bottom floor can be improved. Can be suspended and laid on the unit frame, so that it is possible to omit a conventionally required rail stand tool.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a unit frame 2 is inserted into a machine room-less hoistway 1 in a building, and winches (winding machines) 3 and 3 are installed at the uppermost part of the hoistway so that the hoistway can be freely raised and lowered. . The unit frame 2 incorporates a car frame (car frame) 4 for installation, and the car frame 4 is connected to the winches 3 and 3 by an endless winder 5 and is connected to the unit frame 2 that moves up and down integrally with the car frame 4. As shown in FIG. 2, a centering jig 6 is provided.
[0012]
As shown in FIGS. 2 and 3, the centering jig 6 has a pair of left and right isosceles triangular recesses 8 at the front of the unit frame 2 (on the entrance / exit 7 side of the hoistway 1 provided in each layer, that is, the step side). The marks 9, 9 a, 9 b are attached to the apex side and the left and right sides of the recess 8, respectively, and a piano wire for centering is provided at the intersection of the extension lines of these three marks 9, 9 a, 9 b. When the center of the centering reference line 10 is located, the position of the unit frame 2 is determined. Therefore, when the pair of recesses 8 and 8 are the same, the front and rear and left and right positioning of the unit frame 2 is performed. All centering is possible.
[0013]
In addition, although the recessed part 8 was provided in the front part, you may provide in a rear part or a side part, and is good also as providing one each in a front part and a side part. In short, it is only necessary that the unit frame 2 can be accurately positioned, and the minimum number of units is two (two). Moreover, the recessed part 8 is not restricted to an isosceles triangle, but may be a ring through which the centering reference line 10 is inserted or other shapes that are easily centered.
[0014]
Therefore, the flow of construction according to the present invention will be described with reference to FIG. 4. First, a material is carried into the hoistway 1 (S 1). This material includes various materials such as the unit frame 2, the car frame 4, the guide rail 11, and jigs such as the endless winder 5.
[0015]
Next, winches 3 and 3 are attached to the top of the hoistway (S2).
[0016]
Also, the pit base at the bottom of the hoistway is installed (S3).
[0017]
Then, the uppermost guide rails 11a, 11a for the car frame are erected and temporarily fixed on the lowermost layer of the hoistway (S4).
[0018]
Next, the car frame 4 having rollers that engage with the guide rails 11 is assembled in the hoistway, and the unit frame 2 is assembled integrally with the car frame 4 (S5). The car frame 4 is connected to the winch 3 by an endless winder 5.
[0019]
The upper end portion of the temporarily fixed guide rail 11a is fixed to the unit frame 2 and the O / H beam 12 and the hitch 13 are attached (S6).
[0020]
Therefore, the unit frame 2 is wound up by the winch 3, and centering reference lines 10 and 10 for centering such as piano wires are vertically installed in the recesses 8 and 8 of the unit frame 2, respectively. Further, the guide rails 11 necessary for the downstairs are sequentially added to the suspended uppermost guide rails 11a, 11a while raising the unit frame 2 (S7).
[0021]
When the centering reference lines 10, 10 are located at the intersections of the marks 9, 9a, 9b of the recesses 8, 8, all the centering is possible, whereby the guide rail 11 is centered (S8).
[0022]
Next, the guide rail for the counterweight 14 is fixed to the unit frame 2 (S9). The guide rail is centered (S10), and the O / H sheave is fixed and centered (S11).
[0023]
After that, the doorway is attached (S12), the pit of the machine is installed (S13), and the hoistway wiring is connected (S14).
[0024]
Thereafter, the counterweight frame 15 and the counter are attached (S15), the rope is hung (S16), and then the temporary material is removed (S17).
[0025]
Thus, when the construction of the machine roomless elevator is completed, a trial run is performed (S18), the elevator car is assembled to the car frame 4 (S19), and each part is adjusted (S20).
[0026]
Thus, by using the centering jig 6 provided on the side of the hoistway entrance 7 on the front part of the unit frame 2, the guide rail 11 and all other members can be centered. In addition, the centering reference line suspending work is sufficient with at least two, so that the work can be omitted and the installation time can be shortened, and the work efficiency can be improved.
[0027]
【The invention's effect】
According to the present invention described above, the centering by the centering reference line required for laying the guide rails of the car frame and the counterweight can be omitted, and the work man-hour can be reduced as much as the work efficiency. Improves and shortens installation time. Also, lift the unit frame up to the top layer with the guide rail for the top floor fixed to the unit frame, fix the guide rail in the hoistway on the top floor, and then lift the unit frame along the guide rail Since the lower guide rails can be sequentially added and installed while being centered, the rail standing tools and the like necessary for the NOW method can be omitted.
[Brief description of the drawings]
FIG. 1 is a schematic side sectional view of a hoistway showing an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional plan view of a hoistway showing an embodiment of the present invention.
FIG. 3 is an enlarged view of a main part of FIG. 2;
FIG. 4 is a flowchart of the construction method of the present invention.
FIG. 5 is a schematic side sectional view of a hoistway according to a conventional construction example.
6 is a schematic cross-sectional plan view of FIG. 5;
[Explanation of symbols]
1 ... Machine roomless hoistway 2 ... Unit frame 3 ... Winch 4 ... Car frame (cage frame)
5 ... Endless winder 6 ... Centering jig 7 ... Entrance / exit 8 ... Recesses 9, 9a, 9b ... Mark 10 ... Centering reference line 11 ... Guide rail

Claims (2)

The top floor guide rail is fixed to the unit frame assembled integrally with the car frame in the hoistway, and the top floor guide rail is lifted together with the top floor guide rail by a temporary hoisting machine. After sequentially adding the guide rail necessary for the downstairs to the guide rail,
Positioning of the front and rear left and right within the hoistway in which at least a pair of at least a pair of centering unit frame with a reference line passing through the respective centering the fixture depending from the hoistway top to bottom provided on the unit frame by performing, installation method of the machine room less elevator which is characterized in that the centering of the moth Idoreru. 2. The machine room-less elevator according to claim 1 , wherein the centering jig is provided with a mark for projecting a center of the recess around a recess formed in a front portion of the unit frame . Installation method.

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