JPH0147382B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an elevator monitoring device, and more specifically, the present invention relates to an elevator monitoring device, and more specifically, it detects the presence or absence of an abnormality by comparing the conditions in the elevator hoistway before and after an earthquake. This invention relates to a monitoring device that allows the elevator to resume operation afterward.

[Prior Art] In this type of elevator, a car and a counterweight connected to the car via a rope are suspended in the hoistway, and various landing devices and a large number of cables that easily swing are suspended. , ropes, etc. are installed. For this reason, when an earthquake with a magnitude of 4 occurs, there is usually no risk of damage to the building itself, but
Elevator ropes may get caught or become tangled in equipment in the hoistway, and the counterweight may even come off the rail that regulates the counterweight. It was dangerous to move the elevator without inspection, and it was necessary for an expert maintenance worker to inspect the inside of the elevator hoistway before the elevator could be restarted.

However, this inspection work is manual and requires a limited number of maintenance workers to inspect each elevator in turn, so in some buildings it may take a long time to restart the elevators. Particularly in countries like Japan, where earthquakes with a seismic intensity of around 4 occur frequently, inspections need to be carried out each time, which requires an enormous amount of time and effort.

Therefore, as a means to solve this problem, devices have been proposed that automatically detect when the rope becomes tangled or the meter comes off.
Although such devices can detect failures in specific parts, it is difficult to detect safety checks along the entire elevator operating route in the event of an earthquake with a seismic intensity of about 4 as described above. Ta.

[Summary of the Invention] Therefore, the present invention has been made to solve the above-mentioned drawbacks, and allows a building supervisor to display the situation in the elevator hoistway before and after an earthquake on an image comparison device, and to understand the situation after the earthquake. By checking quickly,
It is an object of the present invention to provide an elevator monitoring device that can determine the presence or absence of an abnormality in an elevator and shorten the time required to restart operation of the elevator.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings. Reference numeral 1 indicates a car that goes up and down in a hoistway, and cameras 2 and 3 are provided above and below the car to photograph the situation of the hoistway. ing. The car 1 is connected to a counterweight 4 via a rope 5 and to a governor 6 in a hoistway machine room via a governor rope 7. A pulse detector 8 is attached to the governor 6 to detect pulses obtained by rotation of the governor sheave, etc. when the car 1 moves up and down, and this pulse detector 8 is further connected to a control panel 9. The control panel 9 controls the pulse detector 8.
The position of the car 1, for example, which floor the car 1 is currently located on can be detected by receiving the detection signal from the car 1. This control panel 9 is connected to the cameras 2 and 3 of the car 1 via a cable 10,
and a video comparison device 11 installed in the monitoring room.
It is connected to the. This video comparison device 11 is 2
It consists of a pair of video cameras with zoom lenses and one color monitor, and one video camera is connected to camera 2 of car 1 based on information from control panel 9.
3, and the other video camera captures an image of the hoistway situation data 12 recorded in advance corresponding to the above-mentioned car positions in the hoistway. Two images showing the situation of the hoistway are displayed alternately on the monitor, and the two images can be compared using an overlay effect.

In addition, 13 is a connecting wheel, 14 is a deflection wheel, 15 is a balance wheel, and 16 is a tension wheel of the governor 6.

In the device having the above configuration, when a weak earthquake occurs, the car 1 is stopped, the upper and lower lights (not shown) of the car 1 are turned on, and the situation of the hoistway is monitored by the cameras 2 and 3 of the car 1. At the same time, the pulse detector 8 displays the position of the car 1 on the comparison device 11 via the control panel 9. And the watcher is this basket 1
It is possible to determine which floor of the hoistway is currently being photographed, and based on this, the condition of the hoistway taken in advance at the position closest to the car position is input to the comparison device 11 from the situation data 12, and the earthquake It compares the conditions of the hoistway before and after, and detects whether there is an abnormality in the condition of the hoistway. In this way, car 1 is gradually raised and lowered to determine whether or not there is an abnormality in the hoistway, and if no abnormality is found in the hoistway, the elevator is operated and the earthquake is quickly detected without requiring much manpower. Elevator operation can be resumed at a later time.

In the above embodiment, the cameras 2 and 3 are attached to the car 1, but the cameras can also be provided anywhere along the hoistway.

[Effects of the Invention] As described above, according to the present invention, when an earthquake occurs, the person monitoring the building can immediately determine whether there is an abnormality in the hoistway after the earthquake without the need for human intervention, so This has the effect that elevator operation can be restarted immediately.

[Brief explanation of drawings]

The figure is a schematic diagram showing an embodiment according to the present invention. 1... Car, 2, 3... Camera, 8... Pulse detector, 9... Control panel, 11... Video comparison device, 12... Status data.

Claims (1)

[Claims] 1. A camera attached to the elevator hoistway or car to capture the situation of the hoistway, a car position detection device to detect the car position in the hoistway, and a car position detection device that records the car position in advance in correspondence with the car position in the hoistway. situation data in the normal state of the hoistway, the situation of the hoistway at a specific position obtained based on the information from the camera and the car position detection device, and the situation in the normal state corresponding to the situation of the hoistway at the specific position. An elevator monitoring device comprising: an image comparison device that successively compares data with a hoistway condition; and the comparison device detects whether or not there is an abnormality in the hoistway.