JPH0774074B2 - Elevator scaffoldingless installation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention is a worker who uses a car frame to construct various elevator devices in a hoistway without forming a scaffold in the elevator hoistway. The present invention relates to an elevator scaffold-less installation device used for installation work.

(Prior Art) Conventionally, this type of elevator-less scaffolding installation method
As shown in the figure, through a hoisting machine 1 installed in the machine room at the upper part of the building, a hoisting sheave 2 and a hoisting rope 4 wound around the deflecting sheave 3 of the hoisting machine 1. A car frame 5 and a counterweight 6 each having an elevator equipment installation work floor 5a suspended in the hoistway so as to be vertically movable relative to each other.
And a driving device 7 installed on the car frame 1 so that a worker can operate it, and a control of the main installation for operating the main installation hoisting machine 1 in a predetermined rotational drive direction by a lifting operation command of the operating device 7. A panel device 8 is provided, and in this state, a three-phase power source is supplied from the building, and while operating the operating device 7, the main hoisting machine 1 is operated to move the car frame 5 to a desired height. , The working floor 5a of the car frame 5 without forming a scaffold in the hoistway
The above work is to install various equipment for elevators in the hoistway.

(Problems to be solved by the invention) By the way, in the above case, in order to operate the hoisting machine 1 of the main installation to drive the car frame 5 up and down, the car frame 5 and the counterweight 6 are different from those in the main installation. Although it is light, it is necessary to supply about three-phase power source, which is about half of that at the time of main installation. However, especially in small buildings other than big cities, such as buildings under construction,
The supply start time of the three-phase power source is late, and there are many cases where the elevator is not installed in time, and even if it is supplied, the capacity of the temporary power supply equipment is insufficient, etc.
However, there were many cases where the above-mentioned elevator scaffoldless construction method could not be adopted due to the inability to operate.

The present invention has been made in view of the above circumstances, and a car frame having a work floor can be vertically driven by a small-capacity temporary power source or a single-phase power source such as lighting for general households, and a scaffold is installed in a hoistway. It is an object of the present invention to provide an elevator scaffolding-free installation device that can easily perform installation work of various types of equipment for elevators.

[Structure of Invention]

(Means for Solving the Problem) An elevator scaffolding-free installation device of the present invention, in order to achieve the above object, an elevator main hoist with a brake, a hoisting sheave of the main hoist, and A car frame having a work floor for installing equipment for elevators suspended in the hoistway relative to each other in the hoistway via a hoisting rope wound around the deflecting sheave, and a counterweight that is lighter than the car frame weight, A temporary lifting machine such as a winch that is installed in the lower part of the hoistway and connects the rope end to the lower part of the counterweight to drive the counterweight up and down with the car frame, and a worker operably installed on the car frame. And a temporary control device for releasing the brake of the main hoisting machine and operating the temporary yard heavy machine in a predetermined driving direction in response to a lifting operation command of the operating device. To collect.

(Operation) With the above configuration, a worker on the work floor of the car frame operates the operation device to issue an operation command to the temporary control device,
The brake of the hoisting machine installed permanently is released, and the temporary lifting machine operates in the predetermined driving direction based on the operation command to move the counterweight up and down via the rope, thereby the car with the work floor. The frame moves up and down to a desired height at a low speed, and a worker on the frame can safely and simply install the elevator various equipment in the hoistway.

(Embodiment) An embodiment of the present invention will be described below with reference to FIG. In the drawing, the same parts as those shown in FIG. 3 are designated by the same reference numerals to simplify the description.

First, a brake 10 is provided in the main hoisting machine 1 installed in the machine room at the upper end of the hoistway, and this brake 10 is connected to the cable 11
It is connected to a temporary control device 12 described later via. The hoisting rope 2 wound around the hoisting sheave 2 and the deflecting sheave 3 of the main hoisting machine 1 and hung in the hoistway has a working frame 5a at one end of which a car frame 5 is suspended. At the other end, a counterweight 6 is suspended, and the car frame 5 and the counterweight 6 are guided by left and right guide rails (not shown) in the hoistway, respectively, and can be relatively moved up and down. ing. In addition, when the brake 10 of the hoisting machine 1 that is permanently installed is released, the car frame 5 is lowered at a very low speed.
The counterweight 6 is slightly lighter than the total weight of.

An operating device 7 is installed on the work floor 5a of the car frame 5 so that an operator can operate it, and the operating device 7 is also connected to the temporary control device 12 via a cable 13.

On the other hand, on the lower wall surface inside the hoistway, a temporary lifting machine 15 is installed by an anchor bolt 14 so as to be located directly below the counterweight 6, and a rope 15a for driving the temporary lifting machine 15 is installed.
The tip is connected to the lower part of the counterweight 6, and the counterweight 6 is driven up and down by winding or loosening the rope 15a. This temporary lifting machine
15 is also connected to the temporary control device 12 via a cable 16. The temporary lifting machine 15 is an ordinary gear-type winch for unloading, and includes a speed detector (not shown) and a control device (not shown) that operates when an abnormal speed is detected.

The temporary control device 12 is installed near a doorway on an appropriate floor of the hoistway, and is operated by a hoisting operation command from a driving device 7 on the work floor 5a of the car frame 5 to operate the main hoisting machine. It has a function of releasing the first brake 10 and operating the temporary lifting machine 15 in a predetermined driving direction based on the lifting operation command.

In order to further enhance the safety of this system, an emergency stop device 17 is installed on the car frame 5 as in the case of the installation, and a safety link 18 for operating this is also provided.
On the other hand, a governor (governor device) 19 is installed in the machine room, and a governor rope 21 is stretched around the governor rope 21 by hanging it on the tensioner 20 in the lower part of the hoistway.
The safety link 18 is connected to the.
Further, a car buffer 22 located directly below the car frame 5 and a counterweight buffer 23 located directly below the counterweight 6 are provided upright at the lower end pit portion in the hoistway.

Thus, in the elevator scaffolding-free installation device having the above-described configuration, when a worker on the work floor 5a of the car frame 5 operates the operation device 7 and issues an operation command to the temporary control device 12, the temporary installation is performed. The brake 10 of the main hoisting machine 1 is released by the action of the control device 12. As a result, the car frame 5, which is slightly heavier than the counterweight 6, descends at a very low speed, but at the same time as the brake 10 is released, the temporary lifting machine 15 operates and rotates at a low speed in the predetermined driving direction based on the operation command. Comes to
As a result, the counterweight 6 moves up and down via the rope 15a, and the car frame 5 moves up and down to a desired height at a low speed in conjunction with this via the hoisting rope 4. When the driver 7 is operated when the vehicle arrives at the destination floor and the temporary lifting machine 15 is stopped, at the same time, the brake 10 of the permanent hoisting machine 1 moves and the car frame 5 stops completely. This allows the worker on the work floor 5a of the car frame 5 to safely and simply install the elevator various equipment in the hoistway.

Here, the operating speed of the car frame 5 is set to a low speed such as several meters / minute, and the car load is suppressed to the necessary minimum, so that the temporary lifting machine 15 has a small capacity of several hundred watts. Then, the car frame 5 can be moved up and down. Therefore, even when the installation site where the three-phase power supply cannot be supplied or the capacity is too small to operate the main hoisting machine 1, a small capacity power supply such as a single-phase 100V power supply for lighting can be used to move the car frame 5 up and down. The operation can be performed accurately, and the elevator scaffold-less installation work can be simplified. Further, for such a small capacity temporary lifting machine 15, it is easy to use the winch or the like used for unloading other equipment as it is.

Next, regarding the safety of this system, it can be said that the car frame 5 is slightly heavier than the counterweight 6,
Since the hoisting sheave 2 is stopped when the brake 10 of the permanent hoisting machine 1 set to the car load is operating, a stable stopped state can be obtained without the car frame 5 moving too much. Installation work can be carried out safely.

Further, even if the rope 15a of the temporary construction site heavy machine 15 is completely damaged, the weight of the counterweight 6 is set so that the car frame 5 always descends at a very low speed. Therefore, the car frame 5 rapidly descends. I do not do it, and I am scared for some reason 5
Even if the vehicle descends at an abnormal speed, the governor 19 and safety link 18
By the action of, the emergency stop device 17 is activated and the car frame 5 can be stopped safely.

Furthermore, since the temporary lifting machine 15 includes a speed detector and a braking device that operates when an abnormal speed is detected, the temporary lifting machine 15 itself automatically brakes when the car frame 5 has an abnormal speed. The car frame 5 can be safely stopped before the speed governor 19 operates, and the safety can be further improved.

Even if the temporary lifting machine 15 winds the rope 15a too much,
The lower end of the counterweight 6 hits the buffer 23 and becomes mechanically stopped.

As described above, the safety of the worker on the work floor 5a of the car frame 5 can be maintained no matter what kind of abnormality occurs.

Note that the present invention is not limited to the above-described embodiment, and for example, the temporary lifting machine 15 includes anchor bolts 14 on the wall surface of the hoistway.
It was fixed with a rail clip (not shown) on the pair of left and right guide rails 24 for counterweight as shown in FIG.
It is also possible to fix the angle member 25 by means such as above, and to fix the pair of front and rear machine beams 26 between the left and right angle members 25, and to attach the temporary lifting machine 15 thereto. In this case, the temporary lifting machine 15 can be easily installed at a predetermined position regardless of the building frame regardless of the structure.

Although not shown, it is also possible to provide a plate or beam on the counterweight buffer stand and attach the temporary lifting machine 15 thereto.

Further, although not shown, a parent rope is stretched over the entire height in the hoistway so that the car frame 5 can be connected thereto, and the car frame 5 stopped at various height positions is used for installing equipment for elevators. Further safety can be achieved by connecting to the master rope and preventing the fall during the work.

〔The invention's effect〕

As described above, the present invention does not use the main control panel, but provides the counterweight so that the car frame descends at a very low speed when the brake of the main hoist is released, and is connected to the lower part of the counterweight. Since the car frame was moved up and down at a relatively low speed together with the counterweight by the temporary lifting machine via the rope, the three-phase power source could not be supplied or the capacity was too small to operate the main hoisting machine. Even in an installation site that cannot be operated, a small-capacity power supply such as a single-phase 100V power supply for lighting can be used to properly perform the elevator operation of the car frame, making it easy and safe to perform elevator-less installation work. The effect is obtained.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of the entire apparatus showing an embodiment of the present invention, FIG. 2 is a mounting state diagram of a temporary lifting machine showing another embodiment of the present invention, and FIG. 3 is a schematic diagram showing a conventional example. It is a block diagram. 1 …… Permanent hoisting machine, 2 …… Hoisting sheave, 3 …… Deflecting sheave, 4 …… Hoisting rope, 5 …… Car frame, 5a …… Work floor, 6 …… Balance weight, 7 …… Driving device, 10 ... Brake, 12 ... Temporary control device, 15 ... Temporary lifting machine.

Claims (3)

[Claims] 1. An elevator main hoist with a brake, and a hoisting sheave and a hoisting rope wound around the deflecting sheave of the main hoist to move up and down relative to each other in a hoistway. A car frame having a work floor for elevator equipment installation that can be suspended, and a counterweight that is lighter than the weight of the car frame, and a rope end that is installed in the lower part of the hoistway and connects the rope end to the bottom of the counterweight. A temporary lifting machine such as a winch that drives the frame and the counterweight up and down, an operating device installed on the car frame so that a worker can operate it, and a brake of the main hoisting machine according to a lifting operation command of this operating device. An elevator scaffolding-free installation device, comprising: a hypothetical control device for releasing and operating the temporary lifting machine in a predetermined driving direction. 2. The elevator scaffolding-free installation device according to claim 1, wherein the temporary hoist includes a speed detector and a control device that operates when an abnormal speed is detected. 3. The car frame is connected to a fall prevention temporary main line stretched vertically in the hoistway during installation work of elevator equipment at various height positions. The scaffold-less installation device for elevators according to claim 1.