JPH0859123A - Earthquake control system for hydraulic elevator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an earthquake control device for a hydraulic elevator that is extremely simple and that can quickly return to normal operation. [Configuration] When the vibration sensor 1 operates, the inching means (door openable zone detection device 6, inching operation device 7, inching operation stop position detection device 8) performs control in an operable state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake control system for a hydraulic elevator in which a car is lifted or lowered directly by a hydraulic jack or by using a hydraulic jack and a rope together.

[0002]

2. Description of the Related Art As a conventional hydraulic elevator, as described in, for example, Japanese Unexamined Patent Publication (Kokai) No. 4-333482, a car, a hydraulic jack consisting of a plunger and a cylinder, a hydraulic pump, a drive motor, and the supply and discharge of hydraulic oil. A hydraulic power unit consisting of a control valve to control and a hydraulic tank, an inching means, a destination floor registration button in the car, etc. are provided, and the hydraulic oil sent from the hydraulic pump of the hydraulic power unit extends the plunger of the hydraulic jack to make this movement. Is conveyed to the car via a rope and the car is moved up and down, and when the car is stopped, the phenomenon of the car descending (subsidence phenomenon) occurs and the floor surface of the car and the floor surface of the hall deviate from each other. When it exceeds ~ 30 mm, the inching means operates to match the car floor surface with the landing floor surface (match the level). Operation which has become so as is known performed. It is also possible to install an earthquake control device that operates when a vibration that exceeds a predetermined reference value due to an earthquake or the like is detected, and stops the operation after operating the elevator car, for example, to the nearest floor. Has been done.

[0003]

In the above-mentioned conventional apparatus, there is described the procedure for returning the car that has sunk during a power failure to the floor level of the floor.
Nothing is mentioned about the case where vibration exceeding a predetermined value acts on the hydraulic elevator during an earthquake.

Further, in the above conventional earthquake control system, when vibration exceeding a reference value is detected while the car is running,
After stopping the car on the nearest floor, it was in the operation stopped state, that is, the hall call, door opening and closing, and other mechanisms did not operate at all, so if this is applied to the hydraulic elevator, after the earthquake control system operates , The car sinking phenomenon peculiar to the hydraulic elevator continues, and the car gradually descends. Therefore, when a specialist in charge makes a call to restore normal operation, it is necessary to first check how far the car is descending, and if the car is descending to the position where the emergency stop device operates, For example, the operation described in Japanese Patent Laid-Open No. 4-333482 is required, and normal operation cannot be restored unless a very troublesome operation is performed.

An object of the present invention is to provide an earthquake control device for a hydraulic elevator, which is extremely simple and can quickly return to normal operation.

[0006]

To achieve the above object, the present invention comprises a car, a hydraulic jack, a hydraulic power unit, an inching means, a vibration sensor, etc., and sends hydraulic oil from the hydraulic power unit to the hydraulic jack. Or by returning the car to raise and lower the car with a hydraulic jack, and when the car stop position deviates from the landing floor surface by more than the allowable range, the inching means operates to bring the car floor surface into contact with the landing floor surface. In addition, the hydraulic elevator operates when the vibration sensor detects a vibration exceeding a predetermined reference value during the operation of the car, and operates the car up to a predetermined floor and then stops the operation. Achieved by providing a mechanism in which the inching means is operable when the vibration sensor operates It is.

[0007]

Since the present invention has the above-described structure, the vibration sensor operates during the traveling of the car, the car is driven to the predetermined floor, and the passengers get off.
Although the hall call and door opening / closing are not performed, the inching means is in an operable state. Therefore, if a subsidence exceeding a predetermined allowable range occurs by the arrival of a specialized staff member, the car will be closed each time. A floor matching operation is performed to match the floor surface with the floor surface of the floor. Therefore, the specialist will manually reset the vibration sensor after arrival. As a result, the door is opened, and the condition for returning to normal operation is set by getting in the car and performing a predetermined operation to check the safety of running and whether or not there is an abnormality in the equipment.

As described above, the hydraulic elevator can be returned to the normal operation by the minimum necessary operation required in the event of an earthquake, such as manual return of the vibration sensor and confirmation of traveling safety.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

A vibration sensor 1, a vibration sensor operation detection relay 9, and a reset button 10 are connected in series between the DC power supply terminals P and N, and the normally open contact 9 of the vibration sensor operation detection relay 9 is connected.
a is connected in parallel with the vibration sensor to form a self-holding circuit. Further, the car call device 2, the hall call device 3, the high speed operation device 4, and the door opening / closing device 5 are connected in parallel via the normally closed contact 9b of the vibration sensor operation detection relay 9, and the door opening / closing device 5 Is a door openable zone detection device (which detects whether or not the car position is within a predetermined distance up and down from the normal landing level) 6 of the door openable zone detection device operation detection relay 11 The contacts 11a are connected in series. The door openable zone detection device 6 and the door openable zone detection device operation detection relay 11 are connected in series.
The inching operation device 7 is connected in series with the normally closed contact 11b of the door openable zone detection device operation detection relay 11 and the normally closed contact 12b of the inching operation stop position detection device operation detection relay 12. Inching operation stop position detection device 8 and inching operation stop position detection device operation detection relay 1
2 are connected in series.

When the vibration sensor 1 detects a vibration exceeding a predetermined reference value, the vibration sensor operation detection relay 9
Is turned on and the self-holding contact 9a is held until the reset button 10 is pressed.
Self-held by. The car call device 2, the hall call device 3, the high speed operation device 4, and the door opening / closing device 5 are opened by the normally closed contact 9b of the vibration sensor operation detection relay 9, and the operation of each device is stopped. Door openable zone detection device 6, inching operation device 7, inching operation stop position detection device 8
Is always valid regardless of the operation of the vibration sensor 1, and therefore the door openable zone detection device operation detection relay 11 is turned off when the car passes the door openable zone (preset allowable range) due to the sinking phenomenon. Since the normally closed contact 11b is closed, the inching operation device 7 operates. The inching operation stop position detection device 8 operates, the inching operation stop position detection device operation detection relay 12 is turned on, the normally closed contact 12b is opened, and the floor alignment operation of the inching operation device is stopped.

[0012]

According to the present invention, after the car is driven, the vibration sensor operates to drive the car to a predetermined floor and the passengers get off.
Although the doors will not be opened or closed, but the inching means will be in an operable state, so if subsidence exceeding the predetermined allowable range occurs before the arrival of the specialist,
In each case, a floor matching operation is performed to match the floor surface of the car with the floor surface of the floor. Therefore, the specialist will manually reset the vibration sensor after arrival. As a result, the door is opened, and the condition for returning to normal operation is set by getting in the car and performing a predetermined operation to check the safety of running and whether or not there is an abnormality in the equipment.

As described above, there is an effect that the hydraulic elevator can be returned to the normal operation by the minimum necessary operation required at the time of an earthquake such as the manual return of the vibration sensor and the confirmation of traveling safety.

[Brief description of drawings]

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

[Explanation of symbols]

 1 Vibration Sensor 2 Landing Call Device 3 Door Opening / Closing Device 6 Door Openable Zone Detection Device 7 Inching Operation Device 8 Inching Operation Stop Position Detection Device

Claims (1)

[Claims] 1. A car, a hydraulic jack, a hydraulic power unit, an inching means, a vibration sensor, etc. are provided, and hydraulic oil is sent to or returned from the hydraulic power unit to raise or lower the car by the hydraulic jack. When the car stop position deviates from the landing floor surface by more than the allowable range, the inching means operates to match the car floor surface with the landing floor surface, and the vibration sensor determines in advance while the car is operating. In the control device during an earthquake in a hydraulic elevator that operates when a vibration exceeding a specified reference value is detected, and is brought into a stopped state after operating a car to a predetermined floor, when the vibration sensor operates,
The seismic control device for a hydraulic elevator, wherein the inching means is operable.