JPH11292425A - Elevator installation method - Google Patents

Abstract

(57) [Summary] [Problem] Marking line 3a of hanging weight and floor 5 of the top floor landing
There was a problem that the horizontal alignment with a could not be performed with high accuracy, and the rope length had to be adjusted again in setting the rope flow. SOLUTION: From the value obtained by adding the distance from the top floor landing floor 5a to the floor surface 4a of the temporarily fixed car and the counter clearance H, a value excluding the amount of rope elongation is obtained, and the value is obtained from the upper surface of the buffer 2 upward. Since the hanging weight 3 is lifted while measuring only the calculated value, the lifting position of the hanging weight 3 can be accurately determined.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator installation method.

[0002]

2. Description of the Related Art Conventionally, a scaffoldless construction method has been used in which an elevator is installed, particularly when a car and a hanging weight are connected by a rope, without assembling a scaffold in a hoistway.

An example of this method will be described with reference to FIG.

FIG. 3 is a vertical sectional view of a hoistway showing a conventional elevator installation method.

[0005] First, a buffer 2 (hereinafter referred to as a buffer) is provided at the bottom of the hoistway 1 to alleviate the impact of the hanging weight 3 falling.
The suspension weight 3 is temporarily fixed with a distance H from the upper surface of the buffer 2 to the lower limit of the suspension weight 3 determined by the model of the elevator.

Then, the car 4 is temporarily fixed near the bottom of the hoistway 1 shown in the figure.

Next, a marking line 3a is marked on a portion of the temporarily fixed hanging weight 3 which is located horizontally from the lowest landing floor 5b.

Thereafter, the weight 3 is suspended by a winch (not shown).
Is temporarily lifted and fixed to a position where the marking line 3a is horizontal with the top floor landing floor 5a.

Finally, the hanging weight 3 and the car 4 are connected to each other by a rope (not shown) via a hoisting machine 7, and the car 4 is raised and lowered by the hoisting machine 7, and the equipment in the hoistway is installed. I was

An example of this kind of installation method is disclosed in Japanese Patent Application Laid-Open No. 62-285885.

[0011]

In the prior art, however, the horizontal dimension of the hoistway 1 is determined by using a horizontal bar 6 made of wood or the like to adjust the horizontal position of the marking 3a and the landing floors 5a and 5b. Is large, the marking operation of the marking line 3a and the positioning operation of the floor surface 5a and the marking line 3a cannot be performed with high accuracy.

If the temporary fixing position of the hanging weight 3 is not accurate, the length of the rope connecting the car 4 and the hanging weight 3 will also be inaccurate. There was a problem that it had to be adjusted.

Further, the rope elongates when a load is applied, but the prior art does not take this elongation into consideration, so that there is a problem in that a rope length adjusting operation is required.

Further, the winch is located at the lowest floor landing 5b.
Therefore, in the above-mentioned prior art, there is a problem that an operator who operates the winch and an operator who checks the position of the hanging weight are required, and the operation cost is high.

The present invention has been made in view of these problems, and an object of the present invention is to provide an elevator installation method capable of efficiently performing the operation without adjusting the length of a rope.

[0016]

According to the present invention, in order to achieve the above object, a car is temporarily fixed near the bottom of the hoistway, and a hanging weight is temporarily fixed near the top of the hoistway. In the elevator installation method of installing the equipment in the hoistway while driving the car with the hoist, the counterweight and the rope are connected via the hoist, and from the floor of the top floor landing Measure the distance between the temporarily fixed car floor and the measured value from the lower limit position of the hanging weight set for each model to the upper surface of the shock absorber installed at the bottom of the hoistway. The distance value is added, and the value obtained by subtracting the amount of elongation of the rope from the added value is obtained. Thereafter, one end of a measuring device made of a long body is attached to the bottom surface of the hanging weight, and With the other end side facing the upper surface of the shock absorber, Gastric weight, the lifting from one end to the value of the to the other end becomes a value obtained above, characterized in that it temporarily fixed to the hoistway top portion.

According to the present invention, as described above, the distance from the floor of the top floor of the landing to the floor of the temporarily fixed car, that is, the distance required for raising and lowering the car, and the lower limit position of the hanging weight From the distance to the upper surface of the shock absorber, that is, the value obtained by adding the clearance that allows the hanging weight to safely move up and down, a value excluding the amount of elongation of the rope is obtained, and the obtained value is measured upward from the upper surface of the shock absorber to the measuring device Since the hanging weight is lifted and temporarily fixed while measuring, the position of the hanging weight can be accurately determined and the hanging weight can be lifted and temporarily fixed.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIGS. 1 and 2 are vertical sectional views of a hoistway showing an elevator installation method according to an embodiment of the present invention.

In the installation method of the present invention as well, the work up to temporarily fixing the hanging weight 3 and the car 4 near the bottom of the hoistway 1 described above is the same, and the subsequent work will be described.

First, using a measuring instrument made of a long body, for example, a tape measure 8, the floor 4a of the car 4 is moved from the floor 5a of the top floor landing.
Measure the distance to

As shown in FIG. 1, the end surface 8a of the tape measure 8 is suspended from the floor surface 5a to the floor surface 4a.
If a method is adopted in which the value of the portion facing a is read from the tape measure 8, accurate and efficient measurements can be made.

Next, the value of the distance H (hereinafter referred to as a counter clearance) from the lower limit position of the hanging weight 3 to the upper surface of the buffer 2 as a shock absorber is added to the above-mentioned measured value. Calculate the excluded value.

Here, the counter clearance H is set to a predetermined value in consideration of safety for each elevator model, and the amount of rope elongation can be made substantially the same as the rope length required at the time of completion. It can be obtained by multiplying the measured value by an elongation percentage of 0.3%.

Next, a worker measures the tape measure 8 at the bottom of the hoistway 1.
Of the tape measure 8 is attached to the bottom of the hanging weight 3.
Is held in a state of facing the upper surface of the buffer 2.

In this state, a winch (not shown) is driven and lifted until the other end of the tape measure 8 indicates the calculated value, and the hanging weight 3 is temporarily fixed at a position indicating the calculated value.
The installation method is completed by connecting the temporarily fixed hanging weight 3 and the car 4 with a rope (not shown).

In the present embodiment, as described above, the floor surface 5a,
The distance between the ropes 4a, that is, the distance required for raising and lowering the car 4 and the counter clearance H set between the hanging weight 3 and the upper surface of the buffer 2 for safely lifting and lowering, were added to reduce the amount of rope elongation. Since the weight is calculated and the weight 3 is lifted upward from the upper surface of the buffer 2 while measuring the calculated value at the bottom of the hoistway 1, the weight 3 is accurately measured.
Can be determined and temporarily fixed.

Therefore, it is not necessary to adjust the length of the rope again after the installation is completed, and the efficiency of the installation work is greatly improved as a whole.

If the measured value and the calculated value are recorded on the tape measure 8 in the present method, the lifting position of the hanging weight 3 can be more easily determined at the time of lifting operation.

In this method, the lifting operation can be performed by driving the winch while confirming the lifting position of the hanging weight 3 at the bottom of the hoistway 1, so that one worker can perform the lifting work. The cost can be halved from the conventional two-person operation.

[0031]

As described above, the present invention adopts the above-described installation method, so that the elevator can be efficiently installed without the need for adjusting the rope length.

[Brief description of the drawings]

FIG. 1 is a hoistway longitudinal sectional view showing an elevator installation method according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a hoistway showing an elevator installation method according to an embodiment of the present invention.

FIG. 3 is a vertical sectional view of a hoistway showing a conventional elevator installation method.

[Explanation of symbols]

Reference Signs List 1 hoistway 2 buffer 3 hanging weight 4 car 4a car floor 5a floor of the top floor 7 hoisting machine 8 measuring machine H from the lower limit position to the upper surface of the shock absorber installed at the bottom of the hoistway distance

Claims (1)

[Claims] 1. The car is temporarily fixed near the bottom of the hoistway, and the hanging weight is temporarily fixed near the top of the hoistway. In this state, the car and the hanging weight are connected by a rope via a hoist. And
In the elevator installation method of installing equipment in the hoistway while driving the car by the hoist, measure the distance from the floor of the top floor landing to the floor of the temporarily fixed car. Then, add the value of the distance from the lower limit position of the hanging weight set for each model to the upper surface of the shock absorber installed at the bottom of the hoistway to the measured value, and calculate the extension of the rope from the added value. Obtain the value excluding the quantity value, then, with one end of the measuring device made of a long body attached to the bottom surface of the hanging weight and the other end of the measuring device facing the upper surface of the shock absorber, An elevator installation method, wherein the hanging weight is lifted until the value from the one end to the other end becomes the calculated value, and is temporarily fixed to the top of the hoistway.