JPH0464996B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a scaffold-less installation device for an elevator.

[Conventional technology]

Conventionally, the method of installing elevators without scaffolding was as shown in Japanese Patent Publication No. 16287-1987, for example.
By operating the hoisting machine built into the elevator, raising and lowering the car frame, and using the car frame as a work floor, it is possible to install equipment in the hoistway without assembling scaffolding.

[Problem that the invention seeks to solve]

However, in small buildings outside of large cities,
The three-phase power supply to operate the hoisting machine was not supplied in time for the elevator installation work, or the temporary power supply equipment lacked capacity, so a scaffold-less installation method was adopted for the elevator. There was a drawback that I couldn't do it.

This invention was made to solve this problem, and is an elevator scaffold-less installation device that enables elevator equipment to be installed without a scaffold by using a small-capacity temporary power supply facility or a single-phase power source for the hoisting motor. The purpose is to obtain.

[Means for solving problems]

An elevator scaffold-less installation device according to the present invention includes a reduction gear that reduces and transmits the rotational speed of an auxiliary motor to a hoisting motor, a driving device that gives a lifting command, and a driving device that rotates the auxiliary motor in a predetermined direction and applies a brake. It is equipped with a temporary control device that releases the car and a counterweight that is somewhat unbalanced with the car frame.

[Effect]

In this invention, in response to a command from the operating device, the temporary control device releases the brake, rotates the auxiliary motor in a predetermined direction, reduces the rotational speed of the auxiliary motor using the reduction gear, and transmits the speed to the hoisting motor. The hoisting motor moves the car frame up and down the hoistway at low speed, and the elevator equipment is installed in the hoistway using the car frame as a work floor.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the scaffold-less elevator installation device of the present invention will be described below with reference to the drawings. 1st
The figure is a diagram showing the configuration of one embodiment. In FIG. 1, reference numeral 1 denotes a permanent hoisting machine, to which a brake 2 and a hoisting motor 3 are attached.

These main hoisting machine 1, brake 2, and hoisting motor 3 are attached to a machine beam 4. The machine beam 4 is for installing the main hoist 1 in the machine room of the elevator.

A mounting bracket 8 is attached to this machine beam 4. A temporary auxiliary electric motor 5 is attached to the mounting bracket 8 . This temporary auxiliary electric motor 5
A deceleration device 6 is connected to the deceleration device 6. This speed reducer 6
is connected to the hoisting motor 3 via a coupling ring 7.

On the other hand, 10 is a car frame, and this car frame 10 is attached to one end of a wire rope 14.
The wire rope 14 is wound around the main hoist 1, and a counterweight 11 is attached to the other end of the wire rope 14.

A car top operating device 12 is attached to the car frame 10. This on-car operating device 12 is connected to the temporary control device 9 via a cable 13.

FIG. 2 is a control circuit diagram of the temporary control device 3 that controls the auxiliary motor 5, and 15 and 16 are power lines of a single-phase AC power source. This power line 15 and 1
Connected between 6 and 6 are a run-stop switch contact 17 of the on-car operating device 12, a normally closed contact group 20 in which the normally closed contacts of each safety device of the elevator equipment are connected in series, and a series circuit of an operation relay 21. . This operating relay 21 has normally open contacts 21a to 21e.

Run-stop switch contact 17 and normally closed contact group 20
The connection point is the normally open contact 21 of the operation relay 21
a, the normally open contact 18 of the lift command button, and the lift operation relay 22 are connected to the power supply line 16 via a series circuit.

A series circuit between the normally open contact 19 of the lower command button and the lower operation relay 23 is connected in parallel to the series circuit between the normally open contact 18 and the lower operation relay 22 .

24 is a DC power supply for the brake coil 2A, and the AC side input end of the DC power supply 24 is connected to the power supply lines 15 and 16. This DC power supply 24
A normally open contact 21b and a normally open contact 22a of the rising operation relay 22 are connected between the positive output terminal and the negative output terminal of
A series circuit of the coil 2A of the brake 3 is connected, and a normally open contact 23a of the descending operation relay 23 is connected in parallel to the normally open contact 22a.

A normally open contact 21 is connected between power lines 15 and 16.
A series circuit of c, auxiliary motor 5, normally open contact 21b, and power supply line 16 is connected. This auxiliary motor 5 has a normally open contact 22 of a lift operation relay 22.
b, 22e, descending operation relays 23b, 2c, and capacitor 25 are connected.

Next, the operation of the elevator scaffold-less installation device of the present invention will be explained. After installing the main hoist 1, car frame 10, counterweight 11, etc. as in the conventional scaffold-less installation method, as shown in Fig. is attached using the coupling ring 7 and the mounting bracket 8. By this time, the counterweight 11 is 125Kg with the car frame 10.
Load the items so that the weight is moderately unbalanced.

Next, the temporary control device 9 and the power lines 15, 1
6. Connect the auxiliary electric motor 5 and the brake 6, and also connect the car operating device 12 and the normally closed contact group 20 of the safety device, which were connected to the permanent control panel in the conventional scaffold-less installation method, to the temporary control device 9. do.

At this time, the reduction ratio of the reduction gear 6 is changed to the main hoist 1.
Considering the reduction ratio of
By selecting a low speed of ~3 m/min, combined with the installation of the counterweight described above, the auxiliary motor 5 can move up and down the elevator system with an output of several hundred W. Become.

Therefore, when the run-stop switch contact 17 of the on-car operation device 12 is turned on in this state, the power line 15 - the run-stop switch contact 17 - the normally closed contact group 20 - the run relay 21 - the power line 16
The operation relay 21 is energized by the circuit, and its normally open contacts 21a to 21d are closed, allowing ascending and descending operations. Here, when the lift command button of the car on-car operation device 12 is pressed, its normally open contact 18 is closed, and the power line 15 - operation - stop switch contact 17 - normally open contact 21a - normally open contact 18 - rise operation relay 22-The circuit of the power supply line 16 energizes the lift operation relay 22, and the closing of its normally open contact 22a energizes the brake coil 2A, releasing the brake 2, and closing the other normally open contacts 22b, 22c.
is closed, the auxiliary motor 5 rotates in the upward direction,
The car frame 10 rises at a low speed while the rise command button is pressed. Further, the descending operation is performed in the same manner.

In the above embodiment, only the car on-car operation device 12 was used as the operation command device, but if a similar device is connected to a temporary control panel in the machine room, it is possible to operate the car frame up and down in the machine room. Needless to say.

〔Effect of the invention〕

As explained above, this invention sets the unbalanced weight of the car frame and counterweight to the minimum necessary for installation work, drives this auxiliary electric motor with a temporary control device based on commands from the driving device, and The rotation is transmitted to the hoisting motor via a reduction gear to raise and lower the car frame into the hoistway at low speed, and the elevator equipment is installed inside the hoistway using the car frame as a working platform. Even at installation sites where a power source cannot be obtained, or where the capacity of temporary power supply equipment is small and the electric motor of the permanent elevator hoisting machine cannot be used, a small capacity power source such as a single-phase 100V power source for lighting can be used. This has the effect of enabling a scaffold-free installation method for elevators.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the structure of an embodiment of the elevator scaffold-less installation device of the present invention, and FIG. 2 is a circuit diagram of a temporary control device in the elevator scaffold-less installation device. 1...Main hoist, 2...Brake, 2A...
Coil, 3...Hoisting machine motor, 4...Machine beam, 5...Auxiliary motor, 6...Reduction device, 8...
Mounting bracket, 9... temporary control device, 10... car frame, 11... counterweight, 12... car top operating device. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. The brake and hoisting motor attached to the main hoisting machine of the elevator are used to lift and lower the work floor attached to the above mentioned main hoisting machine via a rope to install scaffolding in the hoistway. A car frame that allows elevator equipment to be installed in the hoistway without any problems.
A counterweight attached to the above-mentioned permanent hoist via a rope so that it is slightly unbalanced with the above-mentioned car frame, a temporary auxiliary electric motor attached to the above-mentioned hoisting motor, A reduction gear that decelerates the rotation of the auxiliary motor and transmits it to the hoisting motor in order to reduce the rotation speed, a driving device installed on the car or in the machine room, and a lifting operation command of this driving device to release the brake and control the auxiliary electric motor. An elevator scaffold-less installation device comprising a temporary control device for raising and lowering the car frame by rotating the car frame in a predetermined direction.