JPH07125942A - Oil level detecting device for hydraulic elevator - Google Patents

Abstract

PURPOSE:To display an optional level in a tank and reduce the cost by providing a partition plate in the tank of a hydraulic power unit, applying upper and lower marks on the plate face of the partition plate, and displaying the height of the oil level. CONSTITUTION:This hydraulic elevator is provided with a hydraulic jack constituted of a cylinder and a plunger and the hydraulic power oil connected to the hydraulic jack via an oil feed pipe. The tank 6 of a hydraulic power unit is provided with a suction pipe 8 feeding oil to a pump which is a hydraulic apparatus and having a strainer 10 at the suction tip section, a return pipe 9 returning oil to the tank 6, a partition plate 7 concurrently serving as an oil level detecting device and displaying the highest/lowest positions of the oil level, and a cover 11 opened when the display of the oil level is confirmed. Level marks are applied at the highest/lowest positions of the oil level of the partition plate 7, which can be used as an oil level gauge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil level gauge for a power unit of a hydraulic elevator, and more particularly to an oil level detecting device suitable when it is not provided outside a tank by law.

[0002]

2. Description of the Related Art In a conventional apparatus, an oil level gauge in a tank of a hydraulic power unit is mounted on the outside of the tank, that is, on the side surface to check the height of the oil level. However, Japanese Patent Application No. 47-67398 is an invention related to this type of device, which may not satisfy local regulations in each delivery area.

[0003]

In the prior art described above, the oil level of the tank is displayed on the outside and the side of the tank. Therefore, it is necessary to install an oil level gauge on the outside of the tank according to the customer's request and local regulations. There was a flaw called impossible.

An object of the present invention is to provide an arbitrary display mark on a partition plate in a tank so that the oil level can be displayed.

[0005]

In order to solve the above problems of the conventional one, the oil level detecting device according to the present invention has the following structure. That is, a partition plate is provided in the tank of a hydraulic power unit that is connected to the hydraulic jack by a hydraulic elevator cylinder, a plunger, and the hydraulic jack, and a vertical mark is provided on the plate surface of the partition plate. Enabled to display the level of oil level.

[0006]

[Operation] An oil level gauge (oil level gauge) is provided in the tank of the hydraulic power unit to check the level of the oil level. The oil level gauge decided to use a partition plate to separate the flow of oil sucked into the hydraulic equipment pump, which was previously placed in the tank, and the flow of return oil into the tank. Hydraulic elevators come in various structures, from small to large-capacity models, and various tank structures come out. Therefore, the indication of the oil level will change, and it will be necessary to design and manufacture each time. Since the partition plate is on a steel plate and can be easily processed, the position to mark on the plate surface can be easily manufactured. As for the marking method, holes or grooves may be cut out. By the above method, an oil level gauge can be installed to check the level of the oil level.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 2 shows an overall view of the hydraulic elevator. 1 is a car, 2 is a plunger that slides up and down in the cylinder 3,
3 is a cylinder, 4 is an oil feed pipe, 5 is a hydraulic power unit,
6 is a tank.

A structural view of the inside of the tank is shown in FIG. Reference numeral 7 is a partition plate which doubles as the oil level detection device of the present invention and can display the highest and lowest oil levels. Reference numeral 8 is a suction pipe for feeding oil to a pump which is a hydraulic device, 9 is a return pipe for feeding oil into the tank, 10 is a strainer, and 11 is a lid which is opened when confirming the display of the oil level. As can be seen from FIG. 1, it can be used as an oil level gauge by attaching a level mark to the leveling partition plate 7.

According to the present embodiment, since the manufacturing is easy, the design can be changed, an arbitrary level can be displayed, the cost can be reduced, and it is not pointed out by laws and regulations.

[0010]

According to the present invention, by providing an oil level indicator in the tank, the same function as that of the conventional oil level gauge can be provided, and the structure can be simplified, so that the design change and the manufacture can be easily performed. It can be done, cost can be reduced, and it will not be pointed out by laws and regulations.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a structural view of a tank.

FIG. 2 is an explanatory view of a hydraulic elevator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Car, 2 ... Plunger that slides up and down in the cylinder 3, 3 ... Cylinder, 4 ... Oil supply pipe, 5 ... Hydraulic power unit, 6 ... Tank.

Claims (1)

[Claims] 1. In a hydraulic jack including a cylinder of a hydraulic elevator and a plunger, and a hydraulic power unit connected from the hydraulic jack by an oil feed pipe, a partition plate is provided in a tank of the hydraulic power unit, and a plate of the partition plate. An oil level detection device for a hydraulic elevator characterized in that the surface is marked vertically so that the height of the oil level can be displayed.