JPH03238280A - Power unit for hydraulic elevator - Google Patents

Abstract

PURPOSE:To reduce the arranging space in a machine room and to facilitate the installation of equipments so as to simplify the wiring thereof by arranging an oil tank, a control panel and a silencer at positions near to each other on a base, and by attaching a terminal box for control wires to a side surface of the control panel. CONSTITUTION:An oil tank 1, a control panel 15 and a silencer 13 are arranged near to each other on a base 22, and a terminal box 23 for relaying control wires from equipments is attached to a side surface of the control panel 15. With this arrangement, it is possible to facilitate the silencer 13. Further, the connection between the control wires can be made without opening a door on the control panel 15. Further, the maintenance of equipments in the oil tank or the replacement thereof can be made only by disconnecting terminals in the terminal box 23, and the disconnection of the wiring in the control panel 15 is not required. Further, since the lengths of the control wires are short, the working operation can be simplified, and it is possible to eliminate the necessity of a process for laying a cable rack or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a power unit of a hydraulic elevator disposed in a machine room of the hydraulic elevator.

[Prior Art] Hydraulic elevators use hydraulic jacks to directly or indirectly raise and lower an elevator car. Advances in hydraulic control methods and advantages in layout have been recognized, and these elevators have recently been used for passengers, luggage, and beds. The demand is likely to increase further in the future.

A hydraulic elevator uses a power unit consisting of an electric motor, a pump, a hydraulic valve, an oil tank, etc. to raise and lower a plunger by sending hydraulic oil to a cylinder of a hydraulic jack or returning it to an oil tank. Hydraulic elevators can be roughly divided into a direct plunger type, which directly pushes up the elevator car, and a side plunger type, which indirectly combines hydraulic elevators, depending on the method of transmitting the vertical movement of the plunger to the elevator car.

Incidentally, in recent years, some motors have been developed in which the above-mentioned electric motor and a pump for delivering hydraulic oil to the cylinder are housed in an oil tank in order to save space, reduce noise, and cool the electric motor.

As a conventional hydraulic elevator pump of this type, there is a technique disclosed in Japanese Patent Application Laid-Open No. 62-275986.

FIG. 3 is a longitudinal sectional view showing a power unit of a conventional hydraulic elevator.

In the figure, (1) is an oil tank disposed on the floor (3) of the machine room (2), (4) is a lid that covers the upper opening of the oil tank (1), and (5) is the oil tank located on the floor (3) of the machine room (2). This is hydraulic oil injected into the oil tank (1). (6) is an electric motor immersed in hydraulic oil (5) via a mounting bracket (7) and a mounting rod (8) attached to the wall of the oil tank (1); (9) is an electric motor immersed in hydraulic oil (5); ), and (10) is a filter attached to the suction port of the hydraulic oil (5) of the pump (9) to prevent impurities in the hydraulic oil (5) from flowing into the pump (9). This is to prevent (11) is the pump (9
) A hydraulic valve (12) is a pipe that communicates the pump (9) with the hydraulic valve (11). (13) is the hydraulic oil (5) generated from the pump (9) and the hydraulic valve (11).
(14) is a pipe that communicates the hydraulic valve (11) and the silencer (13);
5) a control panel (18) that supplies driving power to the electric motor (6) through a power line (16) and controls each device such as the pump (9) and the hydraulic valve (11) through a control line (17);
is a pipe that communicates the silencer (13) and the cylinder (19), (20) is a plunger that moves up and down within the cylinder (19), and (21) is directly connected to the plunger (20) in a hoistway (not shown). It is an elevator car that goes up and down. The cylinder (19) and plunger (20)
A pair of hydraulic jacks is constituted by.

Next, the operation of the conventional hydraulic elevator configured as described above will be explained.

When the ascending operation command is issued, the electric motor (6) rotates,
This drives the pump (9) and moves the oil tank (1)
The hydraulic oil (5) inside is sucked through the filter (10) and sent out from the pipe (12) to the hydraulic valve (11). Since the pressure of this hydraulic oil (5) is higher than the pressure on the cylinder (19) side, it overcomes the spring force of the hydraulic valve (11) and pushes up the valve. Then, the hydraulic oil (5) flows into the silencer (13) from the pipe (14). And this silencer (13)
After the pulsation generated from the pump (9) and hydraulic valve (11) is suppressed, the pipe (18) is injected into the cylinder (19).
flows inside, pushes up the plunger (20) and releases the plunger (
The elevator car 21) directly connected to 20) is raised.

On the other hand, when a descending operation command is issued, a solenoid valve (not shown) is energized and the hydraulic valve (11) is opened, and at this time, the pump (9) is stopped and the hydraulic oil (5) is not delivered. Therefore, the hydraulic oil (5) in the cylinder (19) is pushed by the weight of the plunger (20) and the elevator car (21) and flows back into the oil tank (1), and the elevator car (21) flows inside the hoistway. descend.

[Problem to be solved by the invention] Since the power unit of the conventional hydraulic elevator is configured as described above, the oil tank (1), the silencer (
13), the control panels (15) are individually placed in the machine room (2), and it takes a lot of time to fix each of the devices to the floor (3) of the machine room (2), and the machine room It was necessary to leave a large space for (2). Further, wiring during equipment installation is time-consuming, and in particular, the control line (17) requires a cable rack to be run inside the machine room (2).

Therefore, the present invention provides an oil tank in a machine room, a control panel,
The object of the present invention is to provide a power unit for a hydraulic elevator that saves space for installing a silencer, facilitates the installation of each of these devices, and allows easy connection of control lines and installation parts. .

[Means for solving the problem] A power unit of a hydraulic elevator according to the present invention has the following features:
an oil tank in which a hydraulic oil is sealed and a motor and a pump are immersed in the hydraulic oil; a control panel that supplies driving power to the motor and controls various devices such as the motor and the pump; A silencer that dampens the pulsation of hydraulic fluid generated from a hydraulic valve that adjusts the hydraulic pressure is placed on the base in close proximity to each other, and a connection box that relays control lines from each of the devices is installed on the control panel. It is attached to the side.

[Function] In the present invention, by placing the oil tank, control panel, and silencer close to each other on the base, the installation space of the machine room can be saved, and the installation of each of the above-mentioned devices becomes easy. . Additionally, by attaching a connection box to the side of the control panel that relays control lines from each device, connections can be made without opening the control panel door. When performing maintenance, inspection, or replacement of equipment in the oil tank, it is only necessary to disconnect the terminal terminals of the connection box, and there is no need to disconnect the equipment in the control panel. Furthermore, since the length of the control line is short, the work is easy and there is no need to take measures such as running a cable rack.

[Example 1] An example of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a front view showing a power unit of a hydraulic elevator according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1.

In the figure, the same reference numerals as in FIG. 3 indicate parts that are the same as or correspond to the conventional components, so their explanation will be omitted here.

In the figure, (22) is a base fixed on the floor (3) of the machine room (2) and has a rectangular plane, and (1), (13) and (15) are respectively close to the top of the base (22). The oil tank, silencer, and control panel are arranged as follows, and the control panel (15) is arranged above the silencer (13). (23) is attached to the maintenance/inspection surface on the side of the control panel (17), and controls from the pump, motor thermistor, hot water temperature sensor, coil of the oil pressure valve (11), pressure sensor, etc. in the oil tank (1). This is a junction box that relays the line (17). (24) is an intercom provided on the side of the control panel (15) at the bottom of the connection box (23), (25) is an additional panel provided on the side of the control panel (15) further below, (26) ) is the silencer (13) and cylinder (
19) is a stop valve attached to the pipe (18) that communicates with the pipe (19).

Next, the installation of each device in the power unit of the hydraulic elevator of this embodiment configured as described above and the connection of the control line (17) will be explained.

Oil tank (1), silencer (13), control panel (15)
Because they are all placed close to each other on the base (22), they can be installed without having to anchor them individually to the floor (3) of the machine room (2).

Next, in connection of the control line (17), the terminal in the control panel (15) and the terminal of the connection box (23) attached to the side of the control panel (15) are connected in advance at the installation site or at the factory. Keep it connected.

At the installation site, connect the control lines (17) from the pump, motor thermistor, hot water temperature sensor, hydraulic valve (11) coil, pressure sensor, etc. in the oil tank (1) to the connection box (
Connect to the terminal of 23). By arranging this junction box (23), the oil tank (1) when transported
The control panel (15) can be easily divided and assembled.

In addition, the oil tank (1) and control panel (15) are attached to the base (22
), the control panel (15)
The length of the control line (17) connected between the and each device in the oil tank (1) and the hydraulic valve (11) is shortened, and the length of the control line (17) connected between the machine room (
2) There is no need to take measures such as installing a cable rack inside.

In addition, since the connection box (23) is provided on the maintenance/inspection surface of the control panel (15), there is no need to increase the space in the machine room (2). In addition, the intercom (24) and additional panel (25), which were conventionally attached to the wall of the machine room (2), have been installed on the side of the control panel (15), making it easier to inspect the machine room (2). It will not cause any trouble.

As described above, the power unit of the hydraulic elevator of the above embodiment includes an oil tank (1) in which hydraulic oil (5) is sealed and an electric motor (6) and a pump (9) immersed in the hydraulic oil (5). , a control panel (15) that supplies driving power to the electric motor (6) and controls the electric motor (6);
A silencer (for damping the pulsation of the hydraulic oil (5) generated from the pump (9) and the hydraulic valve (11) that adjusts the oil pressure)
13) are placed close to each other on the base (22), and a connection box (23) for relaying the control lines (17) from each of the devices is attached to the side of the control panel (15). It is something that

Therefore, according to the above embodiment, the installation space of the machine room (2) can be saved, and the oil tank (1), silencer (13), and control panel (15) can be easily installed. In addition, the connection box (23) makes it easy to connect the control line (17), and the length of the control line (17) is shortened, making it easier to take measures such as running a cable rack inside the machine room (2). It is not necessary and wiring can be done easily.

By the way, in the above embodiment, the silencer (13)
A control panel (15) is installed on the top of the control panel (15), and a connection box (23) and an intercom (24) are installed on the side of the control panel (15) from above.
, a layout is used in which an additional panel (25) is attached, but when implementing the present invention, the present invention is not limited to this, and each of these devices can be optimally used depending on the size, shape, etc. It should be placed in a suitable position.

[Effects of the Invention] As described above, the power unit of the hydraulic elevator of the present invention includes an oil tank in which an electric motor and a pump are immersed in hydraulic oil;
A control panel that supplies driving power to the electric motor and controls the electric motor, and a silencer that damps the pulsation of hydraulic oil generated from the hydraulic valve connected to the pump are arranged close to each other on a base. At the same time, a connection box for relaying control lines from each of the devices is attached to the side of the control panel. Therefore, the installation space in the machine room can be saved, and the oil tank, silencer, and control panel can be easily installed. In addition, the connection box makes it easy to connect control lines, and the length of the control lines is shortened, eliminating the need for measures such as running cable racks inside the machine room.
Wiring can be done easily.

In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] An oil tank in which an electric motor and a pump connected to the electric motor are immersed in sealed hydraulic oil, a control panel that controls the electric motor, and pulsations of the hydraulic oil generated from a hydraulic valve connected to the pump. a silencer that attenuates the noise; a base in which the oil tank, a control panel, and the silencer are arranged close to each other; and a connection box that is attached to a side surface of the control panel and relays control lines from each of the devices. A hydraulic elevator power unit featuring: