JPH0542272U - Maintenance operation equipment for elevators - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a maintenance operation device that allows one person to get on the car alone. [Structure] In an elevator that services multi-story floors and has upward and downward call registration buttons UP and DN at each hall, a low hall switch, SW2 is provided, and the low hall switch SW2 is closed to close the call registration button UP. , DN operation allows low speed operation during maintenance inspection.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a maintenance operation device for an elevator.

[0002]

[Prior Art]

 Generally, during maintenance and inspection, when you get on the car, operate the maintenance switch and the up (down) button provided in the operation panel inside the car. Maintenance work was performed after switching to operation.

[0003]

[Problems to be solved by the device]

 In the above conventional device, one person must be in the car to operate the maintenance switch and the up (down) button provided in the operation panel inside the car, and another person must be on the car from the landing. However, two people were required to get on the car and perform maintenance work, which was uneconomical and had a problem of poor operability.

In view of the above points, the present invention is to provide a maintenance operation device for an elevator that allows one person to get on the car alone.

[0005]

[Means for Solving the Problems]

 The purpose of this is to provide a low speed operation switch for a hall in an elevator maintenance operation device that services multiple floors and has call registration buttons for upward and downward calls at each stop, and closes the low speed operation switch for the hall. This is achieved by operating the call registration button to enable low-speed operation during maintenance and inspection.

[0006]

[Action]

 A hall low-speed switch that enables low-speed operation with the call registration button at the hall is provided.When this hall low-speed switch is operated, the operation of the upward call registration button or the downward call registration button is detected to raise or lower respectively. By driving, one person can easily get on the car.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an electric circuit diagram showing an embodiment of the present invention, FIG. 2 is a front view of a call registration device and an indicator installed at a landing, and FIG. 3 is a motor circuit diagram of an elevator including a three-phase power source. It

In the figure, SW1 is an in-car low-speed operation switch, which is used when performing maintenance work in the car. Reference numerals 1 and 2 respectively indicate the up and down buttons in the car, and operate the up button to move the elevator upward, and operate the down button to move the elevator downward. SW2 is a low-speed landing switch, which is used for low-speed driving at the landing. UP and DN are an upward call registration button and a downward call registration button, respectively, which normally register a landing call, but they function to move the elevator at a low speed when the landing low speed operation switch is operating. Reference numerals 11 and 12 are contactors for ascending operation and descending operation. P and N are DC power reduction terminals, 11b and 12b are 11 and 12 normally closed contacts, 11a and 12a are 11 and 12 normally open contacts, R, T and S are three-phase power supplies, IM is three-phase induction Indicates an electric motor. L1 and L2 are indicator parts that display the position and operating direction of the elevator with lamps.

Next, the operation of the present invention will be described. To make the explanation easier to understand, the conventional method and the method according to the present invention will be described in this order.

Up to now, one person operates the in-car low speed operation switch SW1 in the car as a method of getting on the car for performing maintenance work. Next, for example, when the up button 1 or the down button 2 is operated according to the direction in which the elevator is desired to move, a circuit of P-SW1-1-12b-11-N or P-SW1-2-11b-12-N is formed. Then, the contactor 11 for ascending operation or the contactor 12 for descending operation is energized. The normally-open contact 11a or 12a of the ascending operation contactor 11 or the descending operation contactor 12 is closed, and the three-phase induction motor IM is supplied with the three-phase power sources R, S, and T from FIG. 3, and the elevator is raised. Or perform descending operation. Two people are needed to get on the car, because if you stop the elevator at a position where you can easily get on the car from the landing, the other person will open the door of the landing and get on the car. .

Next, the method according to the present invention will be described. Operate the low speed landing switch SW 2 in the car. Next, if you want to move down to the hall and move the elevator down, for example, if you want to move it downwards, you can operate the downward call registration button DN installed at the hall to make the circuit of P-SW2-DN-11b-12-N. Are formed and the descending operation contactor 12 is energized. The rotation of the three-phase induction motor IM is similar to the description of the conventional method. If you want to drive in the upward direction, operating the upward call registration button UP installed at the landing will form a circuit of P-SW2-UP-12b-11-N, and the ascending operation contactor 11 will be energized. The elevator operates ascending. This is a method of stopping the elevator at a position where it is easy to get on the car from the landing and opening the door of the landing to get on the car.

As described above, according to the present invention, one person can easily get on the car.

[0013]

[Effect of the device]

 As described above, according to the present invention, one person can easily get on the car to perform maintenance work, and the maintenance work can be improved.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing an embodiment of the present invention.

FIG. 2 is a front view of a call registration device and an indicator installed at a landing.

FIG. 3 is a motor circuit diagram of an elevator including a three-phase power supply.

[Explanation of Codes] SW1 Low speed operation switch in car SW2 Low speed operation switch for landing 1 Up button 2 Down button UP Upward call registration button DN Downward call registration button 11 Upward contactor 12 Downward contactor 11a Upward operation Normally open contact of contactor 12a Normally open contact of contactor for descending operation 11b Normally closed contact of contactor for ascending operation 12b Normally closed contact of contactor for descending operation R, S, T Three-phase power supply IM Three-phase induction motor

Claims (1)

[Scope of utility model registration request] 1. A maintenance operation device for an elevator, which services a number of floors and has upward and downward call registration buttons at each landing, is provided with a landing low speed operation switch, and the landing low speed operation switch is closed. A maintenance operation device for an elevator, characterized in that a low-speed operation at the time of maintenance inspection is possible by operating the call registration button.