JPH1111828A - Hydraulic power unit for hydraulic elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the leakage of oil even when a hydraulic power unit is swung by the earthquake or the like, by installing a wave breaking member comprising a narrow mouth for inhibiting the wave motion when the hydraulic oil is undulated, on an upper part of the oil face of the hydraulic oil in a tank. SOLUTION: The hydraulic oil 2 is stored in an oil tank 1. The other component equipments are a power unit 3, a control panel 4, a cover for covering an upper face of the oil tank, and a wire-gauze 6. The wire gauze 6 is mounted separately a little, so that it covers an upper face of the hydraulic oil 2. When the earthquake occurs, and the oil tank 1 is swung, the hydraulic oil 2 is undulated, but the wave motion is inhibited by being brought into contact with the wire-gauze 6. Whereby the leakage of the oil to an external part from a space between the cover 5 and an upper edge 7 over the wire-gauze can be prevented. Whereby the contamination of a floor surface, and the impossibility of the driving can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic system for a hydraulic elevator for preventing hydraulic oil from leaking from a hydraulic system for a hydraulic elevator.

[0002]

2. Description of the Related Art In general, a hydraulic system for a hydraulic elevator is composed of a tank for storing hydraulic oil and a lid which is detachably provided so as to cover an upper opening of the tank. And
A slight gap was provided between the lid and the upper edge of the tank to release air.

An example of this type of oil tank is disclosed in Japanese Utility Model Laid-Open No. 55-175601.

[0004]

In the conventional oil tank, no measures have been taken against fluctuations in the oil level of the hydraulic oil due to shaking due to an earthquake or the like.

[0005] That is, when an earthquake occurs, shaking is transmitted to the oil tank, and the hydraulic oil level stored in the oil tank fluctuates greatly. Hydraulic oil leaks from the gap of the, and soils the floor. In addition, if a large oil spill occurs,
There was also a problem that the hydraulic device could not be driven.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hydraulic elevator hydraulic system capable of preventing oil leakage even if the hydraulic system shakes due to an earthquake or the like in view of the above-mentioned drawbacks.

[0007]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention provides a hydraulic elevator having a tank for storing hydraulic oil of a hydraulic device of a hydraulic elevator and a lid which is detachably provided over an upper opening of the tank. In the hydraulic system of
A structure is provided above the oil level of the hydraulic oil in the front tank, where a wave preventing member having pores for suppressing the ripples of the hydraulic oil is provided.

Accordingly, even if the oil level of the hydraulic oil shakes due to the earthquake and tries to leak from the upper part of the tank, the wave of the hydraulic oil is suppressed by the wave preventing member, and the oil does not leak from the gap.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG.

FIG. 1 is an overall configuration diagram of an oil tank of a hydraulic device of a hydraulic elevator according to one embodiment of the present invention, and FIG. 2 is an overall configuration of an oil tank of a hydraulic device of a hydraulic elevator according to another embodiment of the present invention. FIG.

In FIG. 1, reference numeral 1 denotes an oil tank in which a hydraulic oil 2 is stored. 3 is a power unit, 4 is a control panel, 5 is a lid that covers the top of the oil tank 1,
Reference numeral 6 denotes a wire mesh attached to the upper edge 7 of the oil tank 1 by a U-shaped attachment piece 8. The wire mesh 6 is provided at a slightly distant position so as to cover the upper surface 9 of the hydraulic oil 2.

Now, when an earthquake occurs and the oil tank 1 shakes, the hydraulic oil 2 undulates, but by contacting the wire net 6, the undulation is suppressed. Therefore, it does not leak outside through the wire mesh 6 between the lid 5 and the upper edge 7.

FIG. 2 shows another embodiment. The difference from FIG.
The wire mesh 6A is attached to the inside of the lid 5 by the bolt 10, and the packing 11 is provided between the wire mesh 6A and the oil tank 1.
It is to have. Also in this embodiment, as in FIG. 1, when a wave occurs in the hydraulic oil 2, this vibration is suppressed by the wire mesh 6 </ b> A and does not leak to the outside. or,
In this embodiment, since the wire netting 6A and the lid 5 are integrated, removal is easy.

In the above embodiment of the present invention, a wire mesh is provided, but a cloth may be used, and a similar effect can be obtained by using a thin plate or the like having small holes.

[0015]

According to the present invention, even if the oil tank shakes due to the earthquake, it is possible to solve the problem that the floor surface is soiled and the driving becomes impossible without oil leakage.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an oil tank of a hydraulic device for a hydraulic elevator according to an embodiment of the present invention.

FIG. 2 is an overall configuration diagram of an oil tank of a hydraulic device for a hydraulic elevator according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil tank 2 Hydraulic oil 3 Power unit 5 Lid 6 Wire mesh 7 Oil tank upper edge 8 U-shaped mounting piece 9 Upper surface of hydraulic oil 10 Bolt 11 Packing

Claims (4)

[Claims] 1. A hydraulic elevator hydraulic system having a tank for storing hydraulic oil of a hydraulic system of a hydraulic elevator and a lid which is detachably provided covering an upper opening of the tank. A hydraulic device for a hydraulic elevator, further comprising a wave preventing member provided with pores for suppressing the wave when the hydraulic oil wave. 2. A hydraulic device for a hydraulic elevator according to claim 1, wherein said wave preventing member is fixed to an upper edge portion of said tank with a U-shaped member. 3. The hydraulic device for a hydraulic elevator according to claim 1, wherein said wave preventing member is fixedly arranged on an inner surface of said lid. 4. The hydraulic device for a hydraulic elevator according to claim 1, wherein said wave preventing member is a wire mesh.