JPH07215609A - Car transfer system - Google Patents

Abstract

PURPOSE:To provide a system for running a car by itself to the uppermost floor only by releasing an electromagnetic brake with using a conventional apparatus without newly arranging any controlling apparatus. CONSTITUTION:An electric circuit for a car transfer system is provided with a switch 18, a maintenance purpose electromagnetic brake forcibly releasing condition circuit 19, which intemtittently releases an electromagnetic brake forcibly when the switch 18 is tuned on, an electromagnetic brake releasing B relay coil 17a, which is picked up when the condition circuit 19 is operated, and a B relay contact 17b which is turned on by a pickup of the coil 17a, in addition to a conventional up traveling relay contact 12, a down traveling relay contact 13, and the like. Therefore, the B relay coil 17a is picked up when a condition in the condition circuit 19 is established, the B relay contact 17b is turned on, current flows in the coil, an electromagnetic brake coil 15 is excited, the electromagnetic brake is released, and consequently, the car travels by itself to the uppermost floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car moving system, and more particularly to a system for releasing an electromagnetic brake by using existing equipment to allow an elevator to run up to the top floor.

[0002]

2. Description of the Related Art Generally, an elevator has a structure as shown in FIG. FIG. 1 is a side view of the entire elevator.

The car 3 moves up and down the hoistway 1. A machine room 2 is provided on the hoistway 1, and a control panel 8 for controlling the movement of the car 3 and a hoisting electric motor 7 for hoisting the car 3 are installed in the machine room 2. . Also,
The hoisting electric motor 7 is provided with a hoisting machine sheave 6 and a position detecting tacho 7a for detecting the movement of the car 3. Also,
Suspended weight 4 is hoisting rope 5 from hoisting rope 5
Is disposed on the back side of the car 3, that is, on the wall side of the hoistway 1 via the. Therefore, when the hoisting electric motor 7 is operated, the hoisting machine sheave 6 rotates and the car 3 and the hanging weight 4 move up and down in a slipping manner.

An electromagnetic brake 9 provided in the machine room 2 holds the car 3 so that it does not move due to a load balance between the car 3 and the hanging weight 4 while the elevator is not operating. Further, a door zone detection device 10a is provided on the back surface of the car 3, while a door zone detection plate 10b is provided on the wall side of the hoistway 1 so that the car 3 stops at a fixed position of the landing for each floor. ing. Therefore, if the door zone detection device 10a detects the door zone detection plate 10b and stops at that position, the door can be opened and closed.

Next, the operation of the elevator having the above structure will be described. FIG. 4 shows an electric circuit for controlling the operation of the elevator. Note that this electric circuit is shown in FIG.
It is arranged on the control panel 8 shown in FIG.

As shown in FIG. 4, in the electric circuit, an up traveling relay contact 12 which is turned on when the elevator is traveling up, and a down traveling relay contact 13 which is turned off when the elevator is traveling down. And are provided.
When the up travel relay contact 12 or the down travel relay contact 13 is turned “ON”, the A relay coil 1
4a picks up and A relay contact 14b is "ON".
become. When the A relay contact 14b is turned "ON", the electromagnetic brake coil 15 is released and a current flows through the coil.
When the electromagnetic brake 9 shown in FIG. 1 is released, the car 3 shown in FIG.
Can be moved up and down.

[0007]

However, in the above configuration, for example, when the car 3 is pushed up for repair work, the power source is temporarily cut off, and then the lever for manually releasing the electromagnetic brake 9 is used. However, the hanging weight 4 had to be lowered to a position where it hits the shock absorber 11 provided at the bottom of the hoistway 1.

However, this operation was complicated.

Therefore, it is conceivable to newly provide a controller dedicated to the maintenance operation for driving the hoisting motor.

However, if the control device dedicated to maintenance transfer is newly installed, there is a problem that the cost is increased, the installation space is taken, and the system is complicated.

The present invention has been made in view of the above conventional problems, and an object thereof is to release an electromagnetic brake by using an existing device without newly installing a control device, and to remove a car. It is to provide a system that allows the vehicle to run to the top floor.

[0012]

In order to achieve the above object, a car moving system according to the present invention is an electromagnetic brake that stops the operation of a car by a load balance between a car and a hanging weight while the elevator is not operating. And a control unit for controlling the operation of the electromagnetic brake, wherein the control unit has an electromagnetic brake forced release means forcibly releasing the electromagnetic brake and pushing up the car to the top floor. To do.

[0013]

According to the configuration of the car moving system described above, the car can be easily moved to the top floor by including the electromagnetic brake forcibly releasing means for forcibly releasing the electromagnetic brake and pushing up the car to the top floor.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of the entire elevator. FIG. 2 is a diagram showing an electric circuit having an electromagnetic brake forced release means according to the present invention. The same components as those of the conventional elevator are designated by the same reference numerals and the description thereof will be omitted.

A feature of the present embodiment is that the control section for controlling the operation of the electromagnetic brake is provided with an electromagnetic brake forced release means for forcibly releasing the electromagnetic brake and pushing up the car to the uppermost floor. As a result, the car can be self-propelled to the top floor without newly installing a control device dedicated to driving the electromagnetic brake for operating the car of the elevator for maintenance and repair work.

That is, in this embodiment, as shown in FIG. 2, a switch 18 for forcibly releasing the electromagnetic brake 9 in an electric circuit for elevator operation control, and this switch 18 is turned "ON". Then, the maintenance electromagnetic brake forced release condition circuit 19 forcibly and intermittently releasing the electromagnetic brake 9 for 4 seconds and the B relay for electromagnetic brake release picked up when the maintenance electromagnetic brake forced release condition circuit 19 operates. Coil 17a and coil 17
B relay contact 1 that turns on by picking up a
7b are provided. Therefore, when the condition of the maintenance electromagnetic brake forced release condition circuit 19 is satisfied, the B relay coil 17a picks up, and the B relay contact 17b is turned "ON". B relay contact 17b is "O
When it becomes “N”, a current flows through the coil and the electromagnetic brake coil 15 is excited. Therefore, the electromagnetic brake 9 shown in FIG. 1 is released, the car 3 in FIG. 1 moves upward, and the car 3 can self-propel to the top floor.

When the car position detecting octopus 7a detects that the car 3 has been pushed up and cannot move, the movement of the car 3 is terminated. As a result, the car can be easily pushed up. Further, this electric circuit is provided inside a control panel 8 installed in the machine room 2.

If the electromagnetic brake release condition 16 at the time of canning failure is provided, the electromagnetic brake release condition 1 at the time of canning failure is set.
When the condition 6 is satisfied, the B relay coil 17a picks up and the B relay contact 17b is turned "ON". When the B relay contact 17b is turned “ON”, a current flows through the coil, the electromagnetic brake coil 15 is excited, the electromagnetic brake 9 shown in FIG. 1 is released, and the car 3 in FIG. 1 can move up and down. It is possible to drive to the nearest floor due to the unbalanced load between 3 and the hanging weight 4.

Next, the operation of the car moving system using the maintenance electromagnetic brake forced release condition circuit of this embodiment will be described. FIG. 3 shows a flowchart for explaining the operation of the system.

A description will be given below with reference to FIGS. 1 and 3. First, the switch 18 is turned “ON” to forcibly release the electromagnetic brake 9. As a result, the electromagnetic brake 9 is forcibly released (step S20), and the car 3 runs by itself (step S21). At this time, the electromagnetic brake 9 is intermittently released for 4 seconds in order to prevent the elevator from running out of control. Then, it is determined whether or not 4 seconds have elapsed after the release of the electromagnetic brake 9 (step S22). If the electromagnetic brake 9 is released before 4 seconds have elapsed, the electromagnetic brake 9 is released and the car 3 continues to run (step 2).
1). On the other hand, when 4 seconds have elapsed, the release of the electromagnetic brake 9 is terminated (step S23). As a result, the electromagnetic brake is applied and the elevator stops (step S
24). After that, the car position detecting octopus 7a detects whether or not the car 3 has been pushed up (so-called on the uppermost floor) and stopped moving (step S25). If the position of the car 3 is not on the uppermost floor in the car position detecting octopus 7a, the elevator is allowed to run again (step S21). On the other hand, when the car position detection octopus 7a determines that the position of the car 3 is the uppermost floor, the self-propelled elevator is terminated.

[0022]

As described above, the car moving system according to the present invention has the electromagnetic brake forcibly releasing means for forcibly releasing the electromagnetic brake and pushing up the car to the uppermost floor. Can be moved to the floor. That is, since the electromagnetic brake forced release means operates so as to release the electromagnetic brake when the switch is turned "ON", the complicated work of manually releasing the electromagnetic brake during maintenance / repair work is eliminated. It

[Brief description of drawings]

FIG. 1 is a side view of the entire elevator.

FIG. 2 is a diagram showing an electric circuit having an electromagnetic brake forced release means in the car moving system according to the present invention.

FIG. 3 is a flow chart for explaining the operation of the system in the car moving system according to the present invention.

FIG. 4 is a diagram showing an electric circuit for controlling the operation of a conventional elevator.

[Explanation of symbols]

 1 Hoistway 2 Machine room 3 Basket 4 Suspended weight 5 Hoisting rope 6 Hoisting machine sheave 7 Hoisting electric motor 7a Car position detection octopus 8 Control panel 9 Electromagnetic brake 10a Door zone detection device 10b Door zone detection plate 12 For running up Relay contact 13 Down travel relay contact 14a A relay coil 14b A relay contact 15 Electromagnetic brake coil 17a B Relay coil 17b B relay contact 18 Switch 19 Maintenance electromagnetic brake forced release condition circuit

Claims (1)

[Claims] 1. An elevator having an electromagnetic brake that stops the operation of a car by a load balance between a car and a hanging weight while the elevator is not operating, and a control unit that controls the operation of the electromagnetic brake. An elevator car moving system, wherein the section has an electromagnetic brake forced release means for forcibly releasing the electromagnetic brake and pushing up the car to the uppermost floor.