JPS602138Y2 - Elevator weighing device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improved structure of an elevator corner rod device.

First, a conventional elevator corner rod device will be explained with reference to FIG.

In the figure, 1 is a car, 1a is a car frame thereof, 2 is an elastic body made of anti-vibration rubber provided at the bottom of the car frame 1a, and 3 is a car floor supported by the elastic body 2 and placed on the car frame 1a. , 4 is a switch that is mounted on the car floor 1a and has an actuating part facing the car floor 3.

That is, the elastic body 2 is bent by the load on the car floor 3, and the switch 4 is operated by the vertical displacement of the car floor 3.

The load on the car floor 3 is detected by the operation of the switch 4 before starting the car 1, and the elevator is controlled via this, so that the operation of the switch 4 is cut off from the electrical circuit while the car 1 is being raised or lowered. Designed.

However, even while the car 1 is going up and down, the car floor 3 is displaced up and down due to acceleration and deceleration of the elevator and gear pulsation of a drive machine (not shown), which causes the switch 4 to repeat its mechanical operation.

This shortens the life of the switch 4, increases maintenance costs, and there is a fear that the desired effect may not be obtained.

This invention solves the above-mentioned drawbacks and aims to provide an elevator corner rod device that prevents the life of the switch for detecting the vertical displacement of the car floor from decreasing.

An embodiment of this invention will be described below with reference to FIGS. 2 and 3.

In the figure, the same reference numerals as those in FIG. A switch whose actuating part faces the car floor 3; 6 a moving device consisting of an electromagnet attached to the car frame 1a and facing the lower surface of the movable mechanism 5; 7 a moving device that is energized when the car 1 is stopped and deenergized when it is being raised or lowered. The normally open contacts of the electromagnetic relay, (+) and (-) are the power supply.

That is, when the car 1 is stopped, the contact 7 is opened and the moving device 6 is deenergized.

Therefore, the movable mechanism 5 is placed in the raised position, and the car floor 3
The switch 4 is operated by the vertical displacement of .

Also, contact 7 for starting car 1 is closed (+)-7-
The moving device 6 is energized by the circuit 6-(-).

As a result, the movable mechanism 5 is attracted and held at the retracted position.

The switch 4 is therefore held in a non-operating position away from the car floor 3.

Therefore, it is possible to prevent the switch 4 from being mechanically operated due to vertical displacement of the car floor 3 due to acceleration, deceleration, etc. of the elevator.

In addition, it is possible to avoid shortening the life of the switch 4 due to such wasteful operations.

In addition, as another embodiment, the switch 4 shown in FIG. 2 is mounted on the car floor 3, and the operating part of the switch 4 is moved by
By retracting the moving device 6 while the car 1 is being raised or lowered, the same effect as in the embodiment shown in FIGS. 2 and 3 can be obtained.

As explained above, in this invention, the switch, which is activated by the vertical displacement of the car floor that is elastically supported by the car frame, is made mechanically inoperable when the car is moving up and down, thereby reducing the load on the car floor. This prevents the switch from repeating unnecessary mechanical operations due to vertical displacement of the car floor due to car acceleration, deceleration, etc., which prevents shortening of the switch life, allows for inexpensive maintenance, and improves stability. The present invention is to realize an elevator surrounding frame device that can maintain the above-mentioned functions.

[Brief explanation of the drawing]

Fig. 1 is a conceptual front view of a car showing a conventional elevator surrounding frame device, Fig. 2 is an enlarged view of the main part of Fig. 1 showing an embodiment of the elevator surrounding frame device according to this invention, and Fig. 3 is an enlarged view of the main part of Fig. 1. 2 is a main part electric circuit diagram of FIG. 2. 1... Car, 1a... Car frame, 2...
...Elastic body, 3...Car floor, 4...
・Switch, 5...Movable mechanism, 6...
Mobile device. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A car having a car floor attached to the car frame via an elastic body, and a movable mechanism attached to one of the car frame and the car floor and disposed between the other and always at a predetermined position. , a switch that is attached to the other of the two and one of the movable mechanisms, and whose actuating part is arranged opposite to the other of the two, and is operated by vertical displacement of the car floor, and when the car is in an up-down state; An elevator corner rod device comprising: a moving device that is biased to move the movable mechanism to separate the switch from the other of the opposing actuating portions of the switch.