JPS6122933Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in an elevator system that includes a roller guide and on which a relatively large unbalanced load acts.

First, a conventional elevator system will be explained with reference to FIG.

In the figure, 1 is an elevating body consisting of a cage, 2 is a driving device consisting of a main rope that suspends the lower part of one side of the elevating body, 3 is a guide rail erected on both sides of the elevating body 1, and 4 is an elevating body. 1 is a guide roller made of an elastic body, and is arranged on the drive device 2 side on the upper side of the elevating body 1. 4' is also a guide roller similar to the guide roller 4, and is arranged on the lower side of the elevating body 1 opposite to the drive device 2.

That is, the elevating body 1 is supported by the drive device 2 and moves up and down, and the unbalanced load at this time is supported by the guide rollers 4, 4'. Due to this unbalanced load, when the elevating body 1 is stopped for a long time, the guide rollers 4, 4' are partially bent, which is difficult to restore. Due to this bending, when the elevating body 1 is restarted, the guide rollers 4, 4' do not roll smoothly, resulting in a problem that the riding comfort of the elevator becomes worse. In order to prevent such a phenomenon, each time the elevating object 1 stops or when the elevating object 1 stops at a predetermined position, the elevating object 1 is supported by a device separate from the guide rollers 4 and 4'. It is conceivable to prevent uneven loads from acting on local portions of the guide rollers 4, 4' for a long time. However, since the support device operates even during normal operation of the elevator, there is a disadvantage in that the elevator body 1 experiences unpleasant oscillations due to this.

This invention eliminates the above-mentioned drawbacks, and provides an elevator system in which the guide rollers are not bent in local areas that are difficult to restore due to long-term suspension of the elevating body, and which does not interfere with normal operation. This is what we are trying to provide.

One embodiment of this invention will be explained with reference to FIGS. 2 and 3.

In the figure, the same reference numerals as in FIG. 8 is a command device consisting of a time-limited relay, 8a is a normally-open contact for time-limited operation, 9 is a control device for operating the elevating body 1 in a downward motion, (+) and (-) are It is a power source.
If the elevating body 1 is now stopped, the contact 7 is closed and the command device 8 is energized by the (+)-7-8-(-) circuit. Then, when the elevating body 1 is restarted in a short time, the command device 9 is deenergized, but the elevating body 1
When a predetermined period of time, for example, about one hour has elapsed after the stop, the contact 8a is closed. This results in (+)-8a
The control device 9 is energized by the circuit -9-(-), and the elevating body 1 is operated to descend below the landing 6, that is, pushed down and supported by the support device 5. As a result, the unbalanced load acting on the guide rollers 4, 4' is reduced, and the guide rollers 4, 4'
It is possible to prevent the occurrence of failures caused by uneven loads acting on local areas. Note that the control device 9
The pushing-down operation of the elevating body 1 is performed at a low speed with the door (not shown) of the elevating body 1 closed.
Further, when the elevating body 1 supported by the support device 5 is restarted, the control device 9 in which the command device 8 was deenergized is also deenergized, so that the elevator returns to its normal state.

Note that the support devices 5 in this embodiment are provided near the guide rollers 4 and 4' of the elevating body 1, and operate via a command device 8 and a suitable control device to press the guide rail 3 and move the elevating body. It is clear that the same effect can be obtained even if it supports 1.

Further, by applying the embodiments shown in FIGS. 2 and 3, the elevating body 1 is controlled to move continuously upward and downward by the operation of the command device 8, and the local part of the guide rollers 4 and 4' is extended. It is also possible to prevent time-biased loads from acting.

As explained above, this invention prevents a relatively large unbalanced load from acting on the guide rollers of the roller guide through a command device that operates when the elevator is stopped for a long time. Since the control device that functions as the support device is energized, the disturbance in riding comfort caused by long-term unbalanced loads acting on local parts of the guide rollers is eliminated without affecting the normal operation of the elevator. This is to realize an elevator system that can.

[Brief explanation of the drawing]

Figure 1 is a conceptual diagram of the main parts of a conventional elevator system.
FIG. 2 is a principal electrical circuit diagram showing an embodiment of the elevator system according to this invention, and FIG. 3 is a diagram corresponding to FIG. 1 explaining the operation of FIG. 2. 1... Lifting body, 3... Guide rail, 4, 4'...
...Guide roller, 5...Support device, 8...Command device, 9...Control 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] In an apparatus having an elevating body guided via a roller guide engaged with a guide rail, and in which a relatively large unbalanced load acts on the guide roller of the roller guide, the elevating body is supported when necessary to remove the unbalanced load. a support device that prevents the action of An elevator device comprising a control device.