JPH0346985A - Maintenance operating device for elevator - Google Patents

Abstract

PURPOSE:To enable an inspector to proceed appropriately and improve its cost and safety by actuating an alarm device when a previously provided slow- down switch is turned on. CONSTITUTION:In the proximity of the upper terminal position in an elevating path 1, a final limit switch 2, an up-limit switch 3 and an upper slow-down switch 4 are provided in order from the top. In the proximity of the lower terminal position, limit switches 5, 6 and a lower slow-down switch 7 are provided in order form the bottom. A cage 8 is decelerated by the operation of the slow-down switches 4, 7. When the up-button or down-button of a switch box 10 is operated by a maintenance inspector 16, and the slow-down switch 4 or 7 is operated by the cam 9 of the cage 8, the cage 8 is decelerated by these operations, as well as an alarm buzzer is actuated to emit an alarm. The inspector can therefore recognize the arrival of the cage at the proximity of the upper or lower end so as to proceed appropriately.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an elevator maintenance and operation system, and more particularly.

The present invention relates to an elevator maintenance operation device that uses a slow down switch to issue an alarm.

[Conventional technology]

Various types of safety devices for elevators have been known, one of which is disclosed in Japanese Utility Model Application No. 58-67862. This technology is equipped with a position detection device that detects whether the distance between the elevator heel and the counterweight is within a predetermined dimension, and an alarm device that is attached to the top of the elevator corner and responds to the position detection device. This patent relates to a device and discloses an example in which a position detection pressure limit switch is provided as a position detection device. This position detection limit switch is installed at a position where it can detect the intersection of the car and the counterweight.
By attaching it to the lower punch end position, it is possible to easily prevent accidents such as accidents on the ceiling of the hoistway and accidents such as pushing up or falling down to the terminal floor when not adjusted. The configuration is also included.

(Problems to be Solved by the Invention) In the above conventional example, 1. position detection limit switches must be installed according to the necessity of detection, which increases the cost.

On the other hand, elevators are generally pre-installed with a slow down switch and a two-stage limit switch. It is set to detect the position and slow down, and is eventually stopped by a limit switch. Moreover, the slow down switch is not used during maintenance and inspection, and the car is set so that even if the slow down switch is turned on, the car will not decelerate.

Therefore, if the distance between the top of the car and the ceiling of the hoistway is close, even if the limit switch is activated and the car stops, the maintenance inspector will be caught between the ceiling of the hoistway and the top of the car. This situation arises.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator maintenance operation device that uses a slow down switch that is pre-installed in the elevator and can reliably notify the upper and lower end positions of the hoistway at low cost. It is in.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a slow down switch provided in the hoistway with an alarm activated by turning on the slow down switch during maintenance inspection. Connected the device.

[Effect]

According to the above means, slow down,
Even if the switch is turned off, the slow
When the car turns on the slow-down switch installed near the top of the hoistway or the lower punch end, an alarm device such as a buzzer installed on the car will be activated. The maintenance and inspection worker then reports the location of the car. This allows maintenance and inspection workers to take appropriate measures depending on the position of the car.

〔Example〕

Hereinafter, two embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 are explanatory diagrams showing the state inside the elevator hoistway, and FIG. 3 is an electric circuit diagram.

1 and 2, in the vicinity of the upper punch end position inside the elevator hoistway 1, there are an upper final limit switch 2, an up limit switch 3. An upper slow down switch 4 is provided. 4a in FIG. 3 is a contact a of a relay (not shown) of the slow down switch.

Near the lower end position, there is a lower final limit switch 5. A down limit switch 6 and a lower slow down switch 7 are provided. 78 in Figure 3
is a contact a of a relay (not shown) of the slow down switch. The slow down switches 4 and 7 are activated during normal operation in the event of a failure of the speed reducer. They are activated by the contact pressure action of the limit switch cam 9 provided on the car seat 8, and the elevator is operated. The device forcibly slows down the vertical speed of the carriage 8 and then stops it. The up limit switch 3 and the down limit switch 6 are used to stop the ride and 8 when it has not stopped due to the operation of the slow down limit switch 4゜7, and the same limit'' switch cam The upper and lower final limit switches 2 and 5 are provided as final safety devices, and are activated by the operation of the up limit switch 3 and the down limit switch 6. , is provided for the purpose of finally stopping when it does not stop. 1° is a close-up during maintenance inspection,
In the down operation box, 13a in FIG. 3 is the a contact of the up button switch, 14a is the a contact of the down button switch, and 118 is the a contact of the switch that is turned on during maintenance and inspection.

In FIG. 3, a relay 12 is energized when the switch 11a is turned on and the contact 4a or 7a of the slow down switch is closed during maintenance and inspection. That is, this is a relay that detects that the ride heel 8 is approaching the end of the hoistway/lower road during maintenance inspection. Reference numeral 15 is a buzzer that sounds to alert maintenance personnel when the car 8 approaches the upper or lower end of the hoistway. Next, the present invention will be explained in detail. The maintenance and inspection switch 11 is operated by the maintenance and inspection person 16.
Suppose that a is inserted and the up button is pressed.

The switch 13a closes and the upper punch is placed in the end position.
When , the slow down switch 4 is activated, its contacts 4a are closed, a circuit of P-4a-11a-12-N is formed, and the relay 12 is energized. When the relay 12 is energized, its contact 12a is closed and P -12a
-13a -15-N circuit is formed, the buzzer 15 is activated, and the maintenance inspector 16 is alerted. This also applies to the lower slow down switch 7.
When the down button of the operation box 1o is operated, the ride heel 8 descends and the slow down switch 7 is activated, a buzzer is activated and a maintenance inspector 17 at the lower punch end position in the hoistway is alerted. In this way, the operation box 10 can be
When the down button is operated and the rider and rider 8 are raising and lowering, the first rider and rider 8 are pressing the slow down switch 4. Alternatively, when 7 is activated, the buzzer 15 is energized and a warning can be issued to the maintenance inspector 16 or 17 without fail. Therefore, it is possible to alert the maintenance inspector and prevent accidents that cause injury or the like.

〔Effect of the invention〕

According to the present invention, when the elevator car reaches a position close to the upper or lower punch end of the hoistway, the slow down switch detects the position and issues an alarm. By using the slow down switch that has been developed, it is possible to provide an elevator maintenance and operation device that is equipped with an alarm device that operates reliably at a low cost.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are explanatory diagrams of an embodiment of the present invention showing conditions in an elevator hoistway, and FIG. 3 is a circuit diagram showing an example of an alarm device. 1... Hoistway, 2, 3, 5, 6... Limit switch, 4, 7... Slow down switch, 4a.

Claims (1)

[Claims] 1. At positions near the upper and lower ends of the hoistway, respectively,
In an elevator maintenance operation device that performs maintenance operations on an elevator device equipped with a slow-down switch via an up-down switch, when the up-down switch is operated, the slow-down switch is activated by turning on the slow-down switch. An elevator maintenance and operation device characterized by being equipped with an alarm device.