JPH10245176A - Stopping position detecting device of hydraulic elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confirm a car position in a machine room, and landing on the designated floor be possible without increasing the cost of an oil tank by arrang ing a car position display range to display a landing car position corresponding to a liquid level, on an inner wall of the oil tank. SOLUTION: A car position display gauge 6 is installed in an oil tank 7 in a power unit 3. A landing car 1 is raised by pushing up a plunger 2 by supplying pressure oil generated by the power unit 3 to a cylinder 5 through a pipe 4. It is lowered by returning oil in the cylinder 5 to the oil tank 7 in the power unit 3 by dead weight of the landing car 1 and the plunger 2. In this way, since an oil level in the oil tank 7 vertically moves by following raising/lowering operation of the landing car 1, when oil level positions according to respective floor stopping positions of the landing car 1 are clearly preexpressed in the car position display gauge 6 by some method, a position of the landing car 1 can be instantly confirmed by the car position display gauge 6 in a machine room.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a car position detecting device for a hydraulic elevator.

[0002]

2. Description of the Related Art In the case of a hydraulic elevator, the position of the machine room does not necessarily have to be at the top of the hoistway, and the installation position can be freely selected. It is very difficult in terms of structure to provide a device that controls the level adjustment at the time of landing mechanically and displays the position of the car at the same time. The landing selector is not used.

Japanese Patent Laying-Open No. 48-53456 discloses an oil level gauge that allows the inside of an oil tank to be seen with glass or the like.

[0004]

However, recently, the oil tank with an oil level gauge has become expensive and has not been adopted recently.

For this reason, the position of the car cannot be detected in the machine room. Therefore, the car cannot be stopped on the desired floor by operating the machine room at the time of emergency installation or maintenance adjustment, which is very inconvenient. there were.

Further, when the car is lowered to the lowest floor during the emergency descent by the worker, the level difference between the floor of the car and the floor of the lowest floor is so large that passengers who get off the car are uneasy. There was also a disadvantage of giving.

An object of the present invention is to enable a worker to confirm the position of a car while staying in a machine room at the time of installation, maintenance and adjustment, and emergency response without increasing the price of an oil tank, and at the same time, depending on the type of work. Car position detection of hydraulic elevators that facilitates landing on a designated floor such as the nearest floor or the lowest floor, and as a result minimizes the level difference at the landing floor and does not give passengers anxiety. It is to provide a device.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to supplying oil in an oil tank to a cylinder through a pipe by a power unit, and moving the car up and down through a plunger. In the hydraulic elevator described above, a car position indicator indicating the position of the car corresponding to the liquid level is provided on the inner wall of the oil tank.

The car position indicator has a magnet on the back surface.

[0010] According to this structure, the oil tank can be attached to an existing oil tank having no oil level gauge, and can be provided to the convenience of an operator while keeping the price of the oil tank high.

Also, when the magnet is attached, it can be easily attached to the inner wall of the oil tank, and at the same time, when the elevator is stopped at the reference floor, the oil level is displaced from the car position indicator. But it can be easily corrected to the correct position.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 and 2, reference numeral 1 denotes a car, 2 denotes a plunger, 3 denotes a power unit, 4 denotes a pipe for sending pressure oil generated by the power unit to a cylinder 5, and 6 denotes a car position indicator which is inside the power unit 3. Oil tank 7
Mounted on

The car 1 is raised by supplying the pressurized oil generated by the power unit 3 to the cylinder 5 through the pipe 4 and pushing up the plunger 2, and the car 1 is lowered by the weight of the car 1 and the plunger 2 in the cylinder 5. Is returned to the oil tank 7 in the power unit 3. When a power failure or other emergency occurs during the operation of the elevator and the power of the elevator is turned off, the emergency lowering is performed by a manually operated valve (not shown) provided in the power unit.

As can be seen from the above description, the oil level in the oil tank 7 moves up and down following the raising and lowering operation of the car 1, so that the car position indicator 6 provided on the oil tank 7 as shown in FIG. If the oil level position corresponding to each floor stop position of the car 1 is specified in some way, the operator opens the oil tank lid in the machine room and looks at the car position indicator 6 to position the car 1 Can be confirmed immediately.

According to this embodiment, the position of the car 1 can be immediately confirmed in the machine room without increasing the price of the oil tank, and the car 1 is desired to be operated by the machine room at the time of emergency installation and maintenance adjustment. The work can be stopped on the floor, and even in the event of an emergency descent, the vehicle can be accurately stopped on the desired floor, and can be safely rescued without giving passengers anxiety.

[0017]

According to the present invention, it is possible to provide maintenance work without increasing the price of the oil tank.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hydraulic elevator according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of an oil tank according to one embodiment of the present invention.

FIG. 3 is a perspective view of a car position indicator according to an embodiment of the present invention.

[Description of Signs] 1 car 2 plunger 3 power unit 5 cylinder 6 car position indicator 7 oil tank

Claims (2)

[Claims] 1. A hydraulic elevator in which oil in an oil tank is supplied into a cylinder via a pipe by a power unit, and a car is moved up and down via a plunger. A stop position detecting device for a hydraulic elevator, comprising a car position indicator for displaying the position of the car in which the vehicle has been moved. 2. The apparatus for detecting a stop position of a hydraulic elevator according to claim 1, wherein the car position indicator has a magnet on a back surface.