JP2000238972A - Hoisting device for installation of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate transportation in a light weight and installation to a landing and safely perform a retracting work of a suspension load, in a hoisting device for installation used for hoisting of various bars in an installation process of an elevator having no machine room over a hoistway. SOLUTION: This hoisting device is provided with a pipe support 4 which is installed on the top floor landing 10 extending to a hoistway 1 by adding pressing pressure between a floor 3 of this landing 10 and a ceiling 2, an arm body 5 whose tip has a hoisting point 9 and base end is rotatably mounted to the pipe support 4, and a hoisting facility 7 supported at the hoisting point 9 of this arm body 5. Therefore, simplification of the structure and weight reduction are easily achieved, and driving of an anchor bolt into the floor of the landing 10 is not required because the pipe support 4 is interposed and fixed between the floor 3 and the ceiling 2 with pressing pressure. In addition, by rotating the arm body 5 rotatably mounted to the pipe support 4 to the landing 10 side, a hoisted load 8 hoisted on the hoisting facility 7 can be safely pulled to a landing of any floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for an elevator used in an installation process of a hydraulic elevator or the like having no machine room above a hoistway.

[0002]

2. Description of the Related Art In elevators installed on low floors, such as elevators and hydraulic elevators, generally,
Since there is no machine room above the hoistway where the car rises and lowers, when lifting various equipment to the upper floor during elevator installation, lifting equipment such as a hoist is supported by the machine room floor. I can't go. Therefore, when such an elevator is installed, a scaffold is set out from the landing on the top floor of the building into the hoistway, and a suspension point supported by the scaffold is provided in the hoistway. Conventionally, a method of hoisting equipment such as equipment in a hoistway by a hoisting equipment attached to a vehicle has been widely adopted.

[0003] However, in order to transport the bouncing scaffold to the top floor at the start of the elevator installation, a temporary lift or the like used for building is required, and the frequently used temporary lift is used for elevator installation work. If you try to borrow, you often have to wait a long time,
There was a risk that work efficiency would be significantly impaired. Further, at the start of the installation of the elevator, it is necessary to transport the curing material for curing the opening of the landing of the building to the landing, but for the same reason, relying on the temporary lift to transport the curing material also reduces the working efficiency. In some cases, workers were forced to go up the stairs with their curing materials because of the risk of damage.

Therefore, in order to solve such a problem, a technique has been proposed in which a lifting device for installing an elevator is installed at the landing on the top floor, as disclosed in, for example, Japanese Patent Application Laid-Open No. H4-129981. I have.

[0005]

The above-described conventional lifting device for installation is a heavy structure because it has a strong structure that is also used as a hanging point for moving a work floor attached to a platform. However, there is a problem that the transportability is poor. In addition, since such a conventional lifting device must be fixed to the landing floor with anchor bolts, if the anchor bolts cannot be driven due to the finishing of the floor of the building, it is difficult to install the anchor bolts on the top floor landing. There was a problem of becoming. Furthermore, the position of the suspended load (various equipment) lifted by such a conventional installation lifting device is lower than the floor of the top floor landing, so that the suspended load at a remote position in the hoistway. There is a problem that there is a danger in the pulling in work for drawing the vehicle to the top floor landing.

The present invention has been made in view of such problems of the prior art, and has as its object to be light in weight, easy to carry, easy to install in a landing, and to safely carry out a work of pulling a suspended load. It is an object of the present invention to provide a lifting device for installing an elevator.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is used for lifting various equipment in the process of installing an elevator having no machine room above a hoistway on which a car is lifted. In the lifting equipment for installation, a pipe support installed at the landing by applying a pressing force between the floor and the ceiling of the landing of the building that faces the hoistway, and a hanging point at the tip end is provided. The arm has a base end rotatably attached to the pipe support, and a lifting device supported by the hanging point of the arm so that the equipment can be lifted.

[0008] Such a lifting device for installation has a simple structure and can be easily reduced in weight, and the pipe support can be interposed and fixed between the floor and the ceiling of the landing such as the top floor by pressing the pipe support. There is no need to install anchor bolts on the landing floor. Furthermore, the suspended load can be safely drawn to the landing by rotating the arm rotatably attached to the pipe support toward the landing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a state where a suspended load is being lifted by an installation lifting device according to the embodiment. FIG. 2 is a plan view for explaining a work of pulling a suspended load by the lifting device.

The elevator installation lifting device shown in these figures is a top floor landing 10 of a building that faces the hoistway 1.
By applying a pressing force between the floor 3 and the ceiling 2, a pipe support 4 installed at the landing 10, and a hanging point 9 at the tip end so that the base end can rotate on the pipe support 4. The arm body 5 is attached, and a lifting equipment 7 attached to a hanging point 9 of the arm body 5 to lift a suspended load 8 (various equipment) is provided.

The pipe support 4 includes an upper pipe 4a having a stopper plate 6a at an upper end, a lower pipe 4b having a stopper plate 6b at a lower end and a male screw part 4d at an upper end, and a male screw part 4d. The upper pipe 4a is roughly constituted by a seat 4e which can be pushed up via a screwing engagement pin 4f, and the outer diameter of the upper pipe 4a is lower pipe 4b.
The lower end of the upper pipe 4a is inserted into the lower pipe 4b.
A long hole 4c extending in the longitudinal direction is formed in the male screw portion 4d of the lower pipe 4b. A pin insertion hole (not shown) that can face the long hole 4c is formed in the upper pipe 4a in the longitudinal direction. A plurality is drilled along. That is, the pipe support 4 is screwed into the male screw portion 4d after inserting the locking pin 4f into the pin insertion hole via the elongated hole 4c to connect the upper and lower pipes 4a and 4b. By screwing the seat 4e upward, the upper pipe 4a can be pushed up via the locking pin 4f, so that the upper pipe 4a is raised between the floor 3 and the ceiling 2 of the landing to push with the screwing of the seat 4e. If the pressure is applied to the ceiling 2 and the floor 3 via the non-slip plates 6a and 6b, the pipe support 4 can be easily and reliably installed at the landing. In addition, if the pipe support 4 is installed in the top floor landing 10 as shown in FIG. 1, the suspended load 8 can be lifted to all landings.
Although the distance between the floor 3 and the ceiling 2 of the landing varies depending on the site, the upper pipe 4a is provided with the above-mentioned pin insertion holes at a plurality of positions, and the pipe support depends on which pin insertion hole the locking pin 4f is inserted. Since the total length of 4 changes greatly,
The pipe support 4 can easily cope with variations in the height dimension between the floor 3 and the ceiling 2.

On the other hand, the arm 5 is roughly constituted by a main beam 5a, a slide beam 5b, a breath 5c, and a column 5d, and is a tube rotatably loosely fitted to the upper pipe 4a of the pipe support 4. The main beam 5a on the pillar 5d
Is connected to the main beam 5a, a slide beam 5b is slidably inserted into the main beam 5a, and a breath 5c having both ends connected to the support 5d and the main beam 5a is connected to the main beam 5a. Supporting. That is,
Since the inner diameter of the support 5d is designed to be larger than the outer diameter of the upper pipe 4a and smaller than the outer diameter of the lower pipe 4b, the pipe support 4 is desired after the upper pipe 4a is inserted through the support 5d. Figure 2
As shown in (1), the parent beam 5a can be moved in an arc around the axis of the pipe support 4. Also, positioning holes (not shown) are formed in the main beam 5a at a plurality of locations, and the slide beam 5b can be fixed by the fixing bolts 5e inserted into these positioning holes.
By appropriately selecting the slide amount, the slide beam 5 can be adjusted.
b can be kept in a state of protruding from the parent beam 5a by a desired length. A suspension point 9 provided at the tip of the slide beam 5b projecting from the parent beam 5a.
, A lifting equipment 7 is attached.

Next, a description will be given of an operation procedure for lifting the suspended load 8 by installing the thus-installed lifting device on the top floor landing 10.

First, before starting the lifting operation, the guide rope 1 is attached to the distal end of the main beam 5a of the arm 5 as shown in FIG.
1 is attached. By rotating the arm 5 around the axis of the pipe support 4 toward the inside of the hoistway 1, the lifting equipment 7 suspended at the tip of the slide beam 5b is arranged at an appropriate position. At this time, one end of the guide rope 11 is left at the landing 10 on the top floor. In addition,
The arm 5 can be extended and contracted by changing the amount of protrusion of the slide beam 5b with respect to the parent beam 5a, so that the lifting equipment 7 is arranged at a desired position according to the shape of the suspended load 8 and the like. Is set in advance. Next, after the suspended load 8 is connected to the wire 7a of the lifting equipment 7 at the landing on the first floor or the like, by operating the lifting equipment 7, the suspended load 8 is moved to the top floor or another arbitrary floor in the hoistway 1. And lift it up.

When the suspended load 8 has been lifted to a desired height position in this manner, the worker can use the guide rope 1 at the landing 10 on the top floor.
By pulling the arm 1, the arm 5 is rotated around the axis of the pipe support 4 toward the landing 10. This allows
As shown by the broken line in FIG. 2, the suspended load 8 suspended by the lifting equipment 7 can be safely drawn into the landing on a desired floor.

The above-described lifting device for installation employs a mounting structure in which the pipe support 4 is interposed and fixed between the floor 3 and the ceiling 2 of the landing with a pressing force, so that the anchor bolt is mounted on the landing floor. There is no need to cast. In addition, the lifting device for installation is not only lightweight, but also has good transportability because the pipe support 4 and the arm body 5 can expand and contract. Accordingly, the worker first transports the lifting device for installation to the top floor landing 10 using stairs, and interposes and fixes a pipe support 4 between the floor 3 and the ceiling 2 to lift the lifting device. As long as the device is installed at the landing 10 on the top floor, various equipment such as equipment in the hoistway and curing materials necessary for the installation of the elevator will be installed on the desired floor using the lifting device for installation. It can be easily and safely transported to the landing, eliminating the need to rely on temporary lifts for building construction.

[0017]

The present invention is embodied in the form described above, and has the following effects.

A pipe support is provided at the landing by applying a pressing force between the floor and the ceiling of the landing of the building that faces the hoistway. Since it is a lifting device for installation comprising an arm body rotatably attached to the support and a lifting device supported by the hanging point of the arm body and capable of lifting various equipment (hanging load), The structure is simple, lightweight and easy to carry, and excellent in transportability. In addition, since the pipe support can be fixed to the landing by the pressing force, it is not necessary to install an anchor bolt on the landing floor, and therefore, the pipe support can be easily installed in a landing where an anchor bolt cannot be installed. Further, when pulling the suspended load to the landing, the arm body rotatably attached to the pipe support may be rotated to the landing side, for example, by installing the pipe support at the top floor landing. By doing so, the work of pulling the suspended load into the landing on any floor can be performed safely.

If the arm is configured to be extendable, the lifting equipment can be arranged at a desired position in the hoistway according to the shape of the suspended load.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where a suspended load is being lifted by an installation lifting device according to an embodiment of the present invention.

FIG. 2 is a plan view for explaining a work of pulling a suspended load by the lifting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Ceiling 3 Floor 4 Pipe support 4a Upper pipe 4b Lower pipe 4c Long hole 4d Male screw part 4e Seat 4f Locking pin 5 Arm 5a Parent beam 5b Slide beam 5c Breath 5d Strut 5e Fixing bolt 6a, 6b 7 Lifting equipment (lifting machine) 8 Suspended load (various equipment) 9 Hanging point 10 Top floor landing 11 Guide rope

Claims (3)

[Claims] 1. An installation lifting device used for lifting various equipment in the process of installing an elevator that does not have a machine room above a hoistway on which a car ascends and descends, wherein the elevator is exposed to the hoistway. A pipe support installed at the landing by applying a pressing force between the floor and the ceiling of the landing of the building, and a hanging point is provided at the distal end so that the base end is rotatably attached to the pipe support. A lifting device for installing an elevator, comprising: an arm which is lifted; and a lifting device supported by the hanging point of the arm and capable of lifting the equipment. 2. An elevator lifting device according to claim 1, wherein said arm body is configured to be extendable and contractible. 3. An elevator lifting apparatus according to claim 1, wherein said pipe support can be installed in a landing on a top floor of a building.