JPH09112502A - Hydraulic device for dwelling house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To excellently drive a plurality of devices including single acting hydraulic cylinders employed by a sky parking device and an elevator by one pump, and thereby try to lower cost and save spaces. SOLUTION: The hydraulic device for a dwelling house is equipped with one pump 43 delivering working fluid to a main line 70. The main line 70 is provided with a check valve 45, and a descending control valve 48 is provided for a return line 74 which is branched from the downstream side of the check valve 45 so as to be forwarded to a tank 50. A control valve 51 is provided for a branch line 71 which is branched from the downstream side of the check valve 45 so as to be connected to the port of a single acting hydraulic cylinder 12 for a sky parking device 10. A control valve 53 for an elevator is provided for a branch line 73 for the elevator, which is branched from the downstream side of the check valve 45 so as to be connected to the port of the single acting hydraulic cylinder 32 for the elevator 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residential hydraulic system. More specifically, the present invention relates to a hydraulic system for a house that drives a three-dimensional parking device that elevates and lowers a pallet on which an automobile is mounted by expanding and contracting a single-acting hydraulic cylinder, and an elevator device that elevates and lowers a car by expanding and contracting a single-acting hydraulic cylinder.

[0002]

2. Description of the Related Art Recently, a three-dimensional parking system for elevating and lowering a pallet on which an automobile is mounted by expanding and contracting a single-acting hydraulic cylinder,
Alternatively, a residential hydraulic system equipped with an elevator system for raising and lowering a passenger car by expanding and contracting a single-acting hydraulic cylinder is becoming widespread. For example, as shown in FIG. 9 (a), a single-acting hydraulic cylinder 102 is used as a residential elevator device 100.
The expansion and contraction of the passenger car 101 through the chain 109
It is known to lift and lower (actual fairness 5-2254).
No. 4). The elevator device 100 includes an electric motor 10
The hydraulic fluid from the pump 103 driven by 4 is supplied to the hydraulic cylinder 102 through the spring center 3-position electromagnetic directional control valve 106, the poppet type electromagnetic valve 107, and the throttle valve 108 so as to be driven. Has become. 10
5 is a relief valve. When the elevator apparatus 100 is stopped, the pump 103 is stopped, the electromagnetic directional control valve 106 is set to non-excitation (neutral position), and the poppet type solenoid valve 107 is set to non-excitation. In this stopped state, the working fluid is bypassed from the electromagnetic directional control valve 106 to the tank even if the pump 103 is started. During the ascending operation, the pump 103 is started and the electromagnetic directional control valve 10
6 is set to one offset position where the solenoid on the left side in the drawing is excited to form a straight flow path, and the poppet solenoid valve 107 is set to non-excitation. In this state,
The working fluid from the hydraulic pump is the electromagnetic directional control valve 106,
It is supplied to the hydraulic cylinder 102 through a poppet type solenoid valve 107 which becomes a free flow. During the descent operation, the pump 103 is stopped, the solenoid on the right side in the figure is energized to set the solenoid on the other side to the other offset position, and the poppet solenoid valve is set to energized. In this state, the working fluid becomes a reverse free flow from the hydraulic cylinder 102 due to the weight of the passenger car 101 supported by the hydraulic cylinder 102.
Return to the tank through the electromagnetic directional control valve 106.

Conventionally, when a multi-story parking system and an elevator system are installed in one house, each device is installed independently, and a hydraulic pump,
A switching valve is provided.

[0004]

However, when a multi-story parking system and an elevator system are provided in one house, it is desirable to make the drive circuits of the respective systems as common as possible from the viewpoint of cost reduction and space saving. desirable. In particular, for a pump that is more expensive than other components in the drive circuit and takes a large installation space, there is a strong demand for such commonization.

As shown in FIG. 9 (b), by simply adding the electromagnetic directional control valve 106B and the poppet type solenoid valve 107B for another device 200, one device 10 can be obtained.
When the pump 103 is started in an attempt to drive only 0, the working fluid bypasses to the tank through the electromagnetic directional control valve 106B for the other device 200 in the stopped state, which causes a problem.

Therefore, an object of the present invention is to favorably drive the multilevel parking system and the elevator system with a single pump,
It is an object of the present invention to provide a residential hydraulic device that can reduce costs and space.

[0007]

In order to achieve the above object, a residential hydraulic system according to a first aspect of the present invention comprises a multi-story parking system for raising and lowering a pallet on which an automobile is mounted by expanding and contracting a single-acting hydraulic cylinder. A residential hydraulic system including an elevator device that raises and lowers a passenger car by expanding and contracting a dynamic hydraulic cylinder, wherein one pump discharges a working fluid to a main line, a check valve provided on the main line, and A descending control valve provided on a return line branching from a downstream side of the check valve to reach the tank, and a branching control valve branching from a downstream side of the check valve to be connected to a port of the hydraulic cylinder of the multistory parking apparatus. And a control valve for a multistory parking device which is provided in a branch line for the multistory parking device and which can open and close the branch line, and a branch valve from a downstream side of the check valve. Elevator apparatus connected to a port of the hydraulic cylinder device provided in the branch line, characterized by comprising an elevator apparatus control valve capable of performing opening and closing of the branch line.

The residential hydraulic system according to claim 1 operates as follows.

In the stop mode, the control valve for the multilevel parking device is set to be closed, the control valve for the elevator device is set to be closed, and the control valve for the descent is set to be closed. Also, the pump is stopped. Therefore, there is no movement of the working fluid, and both the multilevel parking device and the elevator device are stopped.

In the multi-story parking apparatus raising mode for raising the pallet of the multi-story parking apparatus, the multi-story parking apparatus control valve is opened,
The control valve for the elevator device is set to be closed, and the control valve for the descent is set to be closed. Also, the pump is started. Therefore, the working fluid is supplied from the pump to the single-acting hydraulic cylinder of the multi-level parking device through the main line and the branch line for multi-level parking device. As a result, the single-acting hydraulic cylinder of the multi-level parking device extends and the pallet rises. At this time, since the elevator control valve is closed and the descending control valve is closed, the working fluid does not flow from the main line to the elevator branch line or the return line.

In the three-dimensional parking apparatus descending mode for lowering the pallet of the three-dimensional parking apparatus, the control valve for the three-dimensional parking apparatus is opened,
The control valve for the elevator system is set to be closed, and the control valve for the descent is set to be open. Also, the pump is stopped. In this state, the working fluid flows from the single-acting hydraulic cylinder of the multilevel parking device to the branch line for the multilevel parking device and part of the main line (the multilevel parking device branch line and the return line) depending on the weight of the pallet (and the vehicle). Part between) and return to the tank through the return line. As a result, the single-acting hydraulic cylinder of the multi-level parking device contracts and the pallet descends. At this time, since the elevator control valve is closed,
No working fluid flows from the main line to the elevator branch line. Also, the check valve provided in the main line prevents the working fluid from flowing back to the pump.

In the elevator device raising mode for raising the passenger car of the elevator device, the control valve for the multilevel parking device is set to be closed, the control valve for the elevator device is set to be opened, and the control valve for being lowered is set to be closed. Also, the pump is started. Therefore, the working fluid is supplied from the pump to the single-acting hydraulic cylinder of the elevator device through the main line and the branch line for the elevator device. As a result, the single-acting hydraulic cylinder of the elevator device extends to raise the passenger car.
At this time, since the control valve for the multilevel parking device is closed and the control valve for the lowering is closed, the working fluid does not flow from the main line to the multilevel parking device branch line or the return line.

In the elevator apparatus lowering mode for lowering the passenger car of the elevator apparatus, the control valve for the multilevel parking apparatus is set to be closed, the control valve for the elevator apparatus is set to open, and the control valve for lowering is set to open. Also, the pump is stopped. In this state, the working fluid flows from the single-acting hydraulic cylinder of the elevator system to the branch line for the elevator system and part of the main line (the branch line for the elevator system and the return line) depending on the weight of the passenger car (and passengers, cargo, etc.). Part between) and return to the tank through the return line. As a result,
The single-acting hydraulic cylinder of the elevator device contracts and the passenger car descends. At this time, since the control valve for the multilevel parking device is closed, the working fluid does not flow from the main line to the branch line for the multilevel parking device. Also, the check valve provided in the main line prevents the working fluid from flowing back to the pump.

In this way, according to this hydraulic system for a house, the multilevel parking system and the elevator system can be favorably driven by one pump. Therefore, compared with the case where the multi-level parking device and the elevator device are driven independently,
Cost reduction and space saving can be achieved.

According to a second aspect of the present invention, there is provided a residential hydraulic system according to the first aspect of the present invention, wherein the elevator bed device for raising and lowering a bed portion is driven by expanding and contracting a single-acting hydraulic cylinder. A lifting bed device control valve provided on a branch line for the lifting bed device that is branched from the downstream side of the stop valve and connected to the port of the hydraulic cylinder of the lifting bed device, and is capable of opening and closing the branch line. It is characterized by having.

The hydraulic system for a house according to claim 2 operates as follows.

In the stop mode, the control valve for the multilevel parking apparatus is set to be closed, the control valve for the lifting bed apparatus is set to be closed, the control valve for the elevator apparatus is set to be closed, and the lowering control valve is set to be closed. Also, the pump is stopped. Therefore, the working fluid does not move, and the multilevel parking device, the lifting bed device, and the elevator device are stopped.

In the multi-level parking device raising mode for raising the pallet of the multi-level parking device, the multi-level parking device control valve is opened,
The elevator bed control valve is set to be closed, the elevator control valve is set to be closed, and the descent control valve is set to be closed. Also,
The pump is started. Therefore, the working fluid is supplied from the pump to the single-acting hydraulic cylinder of the multi-level parking device through the main line and the branch line for multi-level parking device. As a result, the single-acting hydraulic cylinder of the multi-level parking device extends and the pallet rises. At this time, since the control valve for the lifting bed device is closed, the control valve for the elevator device is closed, and the control valve for the lowering device is closed, the working fluid moves from the main line to the branch line for the lifting bed device and the branch line for the elevator device. It does not flow to the line or return line.

In the multi-level parking device lowering mode for lowering the pallet of the multi-level parking device, the multi-level parking device control valve is opened,
The control valve for the elevator bed device is set to be closed, the control valve for the elevator device is set to be closed, and the control valve for the descending device is set to be open. Also,
The pump is stopped. In this state, the working fluid flows from the single-acting hydraulic cylinder of the multilevel parking device to the branch line for the multilevel parking device and part of the main line (the multilevel parking device branch line and the return line) depending on the weight of the pallet (and the vehicle). Part between) and return to the tank through the return line.
As a result, the single-acting hydraulic cylinder of the multi-level parking device contracts and the pallet descends. At this time, the control valve for the lifting bed apparatus is closed and the control valve for the elevator apparatus is closed, so that the working fluid does not flow from the main line to the lifting bed apparatus branch line or the elevator apparatus branch line. Also, the check valve provided in the main line is
Prevent working fluid from flowing back into the pump.

In the ascending / descending bed apparatus raising mode for raising the bed portion of the ascending / descending bed apparatus, the control valve for the multilevel parking apparatus is closed, the control valve for the ascending / descending bed apparatus is opened, the control valve for the elevator apparatus is closed, and the descending control valve is Each is set to closed. Also, the pump is started. Therefore, the working fluid is supplied from the pump to the single-acting hydraulic cylinder of the lifting bed apparatus through the main line and the branch line for the lifting bed apparatus. As a result, the single-acting hydraulic cylinder of the lifting bed device extends and the pallet rises. At this time, the control valve for the multilevel parking device is closed, the control valve for the elevator device is closed, and the control valve for the descent is closed, so the working fluid is branched from the main line to the multilevel parking device branch line and the elevator device branch line. It does not flow to the line or return line.

In the lifting bed device lowering mode for lowering the bed of the lifting bed device, the control valve for the multilevel parking device is closed, the control valve for the lifting bed device is opened, the control valve for the elevator device is closed, and the control valve for the lowering device is Each set to open. Also, the pump is stopped. In this state, the working fluid is
Depending on the weight of the bed (and the human body), the single-acting hydraulic cylinder of the lifting bed device, the branch line for the lifting bed device, a part of the main line (the part between the branch line for the lifting bed device and the return line), the return Return to the tank through the line. As a result, the single-acting hydraulic cylinder of the lifting bed device contracts and the pallet descends. At this time, since the control valve for the multilevel parking device is closed and the control valve for the elevator device is closed, the working fluid does not flow from the main line to the multilevel parking device branch line or the elevator device branch line. Also, the check valve provided in the main line prevents the working fluid from flowing back to the pump.

In the elevator device raising mode for raising the passenger car of the elevator device, the control valve for the multilevel parking device is closed, the control valve for the lifting bed device is closed, the control valve for the elevator device is open, and the control valve for the descending device is closed. Each is set. Also, the pump is started. Therefore, the working fluid is supplied from the pump to the single-acting hydraulic cylinder of the elevator device through the main line and the branch line for the elevator device. As a result, the single-acting hydraulic cylinder of the elevator device extends to raise the passenger car. At this time, since the control valve for the multi-level parking device is closed, the control valve for the lifting bed device is closed, and the control valve for the lowering position is closed, the working fluid moves from the main line to the branch line for the multi-level parking device and the lifting bed device. It does not flow to the branch line or return line.

In the elevator device lowering mode for lowering the elevator car, the control valve for the multilevel parking device is closed, the control valve for the lifting bed device is closed, the control valve for the elevator device is open, and the control valve for the lowering device is open. Each is set. Also, the pump is stopped. In this state, the working fluid is
Depending on the weight of the passenger car (and passengers, cargo, etc.), from the single-acting hydraulic cylinder of the elevator system to the branch line for the elevator system, part of the main line (the part between the branch line for the elevator system and the return line), the return Return to the tank through the line. As a result, the single-acting hydraulic cylinder of the elevator device contracts and the passenger car descends. At this time, since the control valve for the multilevel parking device is closed and the control valve for the lifting bed device is closed, the working fluid cannot flow from the main line to the branch line for the multilevel parking device or the branch line for the lifting bed device. Absent. Also, the check valve provided in the main line prevents the working fluid from flowing back to the pump.

In this way, according to this residential hydraulic system, the multi-story parking system, the lifting bed system and the elevator system can be favorably driven by one pump. Therefore, cost reduction and space saving can be achieved as compared with the case where the multi-level parking device, the lifting bed device, and the elevator device are independently driven.

According to a third aspect of the present invention, there is provided the residential hydraulic system according to the first or second aspect, wherein one of the control valves provided in each of the plurality of branch lines is opened. At this time, an interlock device is provided for prohibiting opening of the remaining control valves among the control valves respectively provided in the plurality of branch lines.

In the residential hydraulic system according to the present invention, when one of the control valves provided in each of the plurality of branch lines is opened, the interlock device is provided in each of the plurality of branch lines. Since the remaining control valves of the provided control valves are prohibited from opening, only one device corresponding to said one control valve can be activated. That is, when one of the plurality of devices is moving up and down, the working fluid is supplied or discharged only to the single-acting hydraulic cylinder of the device, and even if the user remains in the rest of the plurality of devices. Even if the switch operation for raising and lowering the device is performed, the working fluid is not supplied to or discharged from the single-acting hydraulic cylinders of the remaining devices. Therefore, the supply speed and the discharge speed of the working fluid with respect to the single-acting hydraulic cylinder of the one device during the lifting operation are stable, and the lifting operation of the device is smoothly performed.

According to a fourth aspect of the present invention, there is provided a residential hydraulic system according to the first aspect, wherein the three-dimensional parking system is provided between the multi-level parking system and the multi-level parking system control valve. A pilot operated opening / closing valve that is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder at a constant speed or more is provided, and the hydraulic cylinder of the elevator apparatus is provided between the elevator apparatus and the elevator apparatus control valve. It is characterized in that a pilot operated on-off valve is provided which is closed by the differential pressure between the front and rear when the fluid is discharged from the tank at a constant speed or more.

According to another aspect of the hydraulic system for a house of the present invention, when fluid is discharged from the hydraulic cylinder of the multi-story parking apparatus at a constant speed or more between the multi-story parking apparatus and the multi-story parking apparatus control valve. Since a pilot operated on-off valve that is closed by the differential pressure between the front and rear is provided, in the case where the upstream side of the pilot operated on-off valve in the main line or the branch line for the multilevel parking device bursts during ascending operation, By closing the pilot operated on-off valve, the pallet is prevented from dropping suddenly. Further, between the elevator device and the control valve for the elevator device,
Since a pilot operated on-off valve that is closed by the differential pressure between the front and rear when the fluid is discharged from the hydraulic cylinder of the elevator device at a constant speed or more, the main line and the branch line for the elevator device during the ascending operation are provided. When the upstream side of the pilot operated on-off valve is ruptured, the pilot operated on-off valve is closed to prevent the passenger car from being suddenly dropped. Therefore, the safety of the multilevel parking system and the elevator system is enhanced.

According to a fifth aspect of the present invention, there is provided the residential hydraulic system according to the second aspect, wherein the three-dimensional parking device is provided with a space between the multi-level parking device and the multi-level parking device control valve. A pilot operated opening / closing valve that is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder at a certain speed or more is provided, and between the lifting bed device and the lifting bed device control valve, the lifting bed device is provided. A pilot operated opening / closing valve that is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder at a constant speed or more is provided, and the hydraulic pressure of the elevator apparatus is provided between the elevator apparatus and the elevator apparatus control valve. It is characterized in that a pilot operated on-off valve is provided which is closed by a differential pressure across the fluid when the fluid is discharged from the cylinder at a certain speed or more.

According to another aspect of the hydraulic system for a house of the present invention, when fluid is discharged from the hydraulic cylinder of the multi-story parking device at a certain speed or more between the multi-story parking device and the multi-story parking device control valve. Since a pilot operated on-off valve that is closed by the differential pressure between the front and rear is provided, in the case where the upstream side of the pilot operated on-off valve in the main line or the branch line for the multilevel parking device bursts during ascending operation, By closing the pilot operated on-off valve, the pallet is prevented from dropping suddenly. Further, between the lifting bed device and the control valve for the lifting bed device,
Since a pilot operated opening / closing valve is provided which is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder of the lifting bed apparatus at a certain speed or more, a main line or a branch for the lifting bed apparatus is provided during ascending operation. When the upstream side of the line above the pilot operated on-off valve is ruptured, the pilot operated on-off valve is closed to prevent a sudden drop of the bed portion. Also,
Since a pilot operated on-off valve is provided between the elevator device and the elevator device control valve, the fluid is discharged from the hydraulic cylinder of the elevator device at a speed equal to or higher than a certain speed, and the pilot operated on-off valve is closed by a differential pressure between the front and the rear. When the main line or the branch line for the elevator system upstream of the pilot operated on-off valve bursts during ascending operation, the pilot operated on-off valve is closed and the passenger car suddenly drops. Is prevented.
Therefore, the safety of the multilevel parking apparatus, the lifting bed apparatus, and the elevator apparatus is enhanced.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the hydraulic system for a house according to the present invention will be described in detail below.

FIG. 1 shows the schematic construction of a hydraulic system 40 for a house, which embodies the present invention, for driving the multi-level parking apparatus 10, the lifting bed apparatus 20, and the home elevator apparatus 30. Here, the multi-level parking device 10 is configured to elevate and lower the pallet 11 on which an automobile is mounted via the chain 13 by expanding and contracting the single-acting hydraulic cylinder 12. The lift bed device 20 is configured to lift and lower the upper body part 21 of the bed by expanding and contracting the single-acting hydraulic cylinder 22. Specifically, the upper body portion 21 rotates with respect to the bed body via a hinge (not shown). A home elevator device (hereinafter, simply referred to as “elevator device”) 30 is configured to elevate and lower the passenger car 31 via a chain 33 by expanding and contracting a single-acting hydraulic cylinder 32. Limit switches LS1a and LS1b are provided at the rising and falling ends of the hydraulic cylinder 12, respectively, and limit switches LS2a and LS2b are provided at the rising and falling ends of the hydraulic cylinder 22, respectively. Limit switches LS3a and LS3b are provided at the rising end and the falling end, respectively.

The residential hydraulic system 40 includes a hydraulic unit 41 for discharging the working fluid to the main line 70. In the hydraulic unit 41, a tank 50 that stores working fluid, one variable displacement hydraulic pump 43 that pumps the working fluid from the tank 50 through a strainer 42 and discharges it to the main line 70, and the hydraulic pump 43. A motor 44 for driving the motor and a pressure gauge 46 for measuring the fluid pressure in the main line 70 are housed. Main line 70
Is provided with a check valve 45 for preventing the working fluid from flowing back to the hydraulic pump 43. Hydraulic unit 4
1, the downstream side of the check valve 45 of the main line 70,
In this example, the return line 74 branches from the place 70a to which the pressure gauge 46 is connected. In this return line 74,
A flow control valve 47 with a temperature compensation function and a descending control valve 48 composed of a spring return type 4-port 2-position electromagnetic directional control valve are provided in this order from the main line 70 side, and the end of the return line 74 is a strainer 49. To the tank 50 via. The two ports of the lowering control valve 48 are closed, and the return line 74 is connected to the remaining two ports. The lowering control valve 48 is a solenoid SOL4.
Is in a non-excited and normal position, the return line 74 is closed, and when the solenoid SOL4 is excited and in an operating position, the return line 74 is in an open state. The throttle of the flow rate adjusting valve 47 is preset to adjust the return flow rate of the working fluid during the descent operation.

Downstream of the check valve 45 of the main line 70, in this example, from the end 70b of the main line 70 extending outside the hydraulic unit 41, a branch line 71 for a multilevel parking device, and a branch line for a lift bed device. 72 and an elevator installation branch line 73 are branched. The end of the branch line 71 for the multilevel parking device is connected to the port 12 a of the hydraulic cylinder 12 of the multilevel parking device 10. The end of the lifting bed device branch line 72 is connected to the port 22 a of the hydraulic cylinder 22 of the lifting bed device 20. In addition, the branch line 7 for elevator equipment
The end of 3 is the hydraulic cylinder 3 of the elevator device 30.
2 is connected to the port 32a.

In the multi-level parking device branch line 71, in order from the upstream side, the multi-level parking device control valve 51 consisting of a spring return type two-port two-position electromagnetic directional control valve (with a check valve function) and a pilot operating spring. Return type 2
A pilot operated on-off valve (hereinafter referred to as “fuse valve”) 61 including a port 2 position directional control valve is provided. The control valve 51 for the multilevel parking device is a solenoid SOL1.
Is in a non-excited and normal position, the solenoid valve SOL1 is in a "closed" state in which the multi-level parking device branch line 71 is shut off.
Is excited and is in the operating position, it is in an "open" state in which the multi-level parking device branch line 71 is circulated. Fuse valve 6
No. 1 is closed by the pressure difference between the front and rear when the fluid is discharged from the hydraulic cylinder 12 of the multi-level parking device 10 at a certain speed or higher, and thereafter is not opened until the front and rear pressure difference becomes a certain value or less. . Therefore, if the upstream side of the fuse valve 61 in the main line 70 or the branch line 71 for the multilevel parking device is ruptured during the ascending operation, the pallet 11 can be prevented from being suddenly dropped, and the multilevel parking device 10 can be prevented.
Safety can be improved.

In addition, in the branch line 72 for the lifting bed apparatus, in order from the upstream side, the spring return type 2 port 2 is provided.
A lift bed apparatus control valve 52 including a position electromagnetic directional control valve (with a check valve function) and a fuse valve 62 including a pilot operated spring return type two-port two-position directional control valve are provided. Control valve 52 for lifting bed device
Is "closed" that shuts off the lift bed device branch line 72 when the solenoid SOL2 is not excited and is in the normal position.
In the state, when the solenoid SOL2 is excited and is in the operating position, it is in the "open" state in which the lift bed device branch line 72 is circulated. The fuse valve 62 is closed by the differential pressure between the front and rear when the fluid is discharged from the hydraulic cylinder 22 of the lifting bed device 20 at a certain speed or more, and thereafter, the fuse valve 62 is not opened until the differential pressure between the front and the rear reaches a certain value or less. ing. Therefore, if the upstream side of the fuse valve 62 of the main line 70 or the lifting / lowering bed device branch line 72 is ruptured during the ascending operation, the upper half of the bed 2
1 can be prevented from dropping suddenly, and the safety of the lifting bed apparatus 20 can be enhanced.

Similarly, an elevator branch line 73
The elevator control valve 53 is a spring return type two-port two-position electromagnetic directional control valve (with check valve function) and a pilot operated spring return type two-port two-position directional control valve in order from the upstream side. And a fuse valve 63. Elevator control valve 5
3 is a "closed" state in which the elevator system branch line 73 is shut off when the solenoid SOL3 is not excited and is in the normal position, and an "open" state in which the elevator system branch line 73 is circulated when the solenoid SOL3 is excited and in the operating position. It becomes a state. The fuse valve 63 is closed by the differential pressure between the front and rear when the fluid is discharged from the hydraulic cylinder 32 of the elevator device 30 at a certain speed or higher, and thereafter, the fuse valve 63 is not opened until the differential pressure between the front and rear becomes a certain value or less. There is. Therefore, when the upstream side of the fuse valve 63 in the main line 70 or the elevator system branch line 73 is ruptured during the ascending operation, it is possible to prevent the passenger car 31 from abruptly dropping, and the safety of the elevator device 30 is improved. Can be increased.

Incidentally, the drain ports 12b, 22b of the hydraulic cylinders 12, 22, 32 of the respective devices 10, 20, 30 are
Drain pipe lines 81, 82, and 83 are connected to 32b, respectively. The end of the drain conduit 80 where these drain conduits 81, 82, 83 merge is open to the tank 50 in the hydraulic unit 41. Each hydraulic cylinder 12, 22,
The working fluid overflowing from 32 is drained by these drain pipes 81,
It is guided to the tank 50 in the hydraulic unit 41 by 82, 83 and 80.

As shown in FIG. 2, the above-mentioned multilevel parking system 1
The operation panel 16, the operation panel 26, and the operation panel 36 are provided in the 0, the lifting bed apparatus 20, and the elevator apparatus 30, respectively.

Multi-level parking device operation panel 1 shown in FIG. 2 (a)
6 is a rotary type select switch SS1 for the user to select one of the stop (off) mode, the ascending mode, and the descending mode, and the select switch SS1 is set to the ascending mode or the descending mode. 1 has a self-returning start switch PB1 for starting the hydraulic pump 43 shown in FIG. 1 to raise or lower the pallet 11.

Similarly, the lifting bed apparatus operation panel 26 shown in FIG. 2B has a rotary select switch SS2 for selecting one of a stop (off) mode, an ascending mode, and a descending mode. When the select switch SS2 is set in the ascending mode or the descending mode, it has a self-returning activation switch PB2 for activating the hydraulic pump 43 to raise or lower the upper half of the bed 21.

The elevator device operation panel 36 shown in FIG. 2 (c) is a self-return type raising switch PB3 for raising the passenger car 31 by activating the hydraulic pump 43.
And a self-returning lowering switch PB4 for activating the hydraulic pump 43 to lower the passenger car 31. The up switch PB3 and the down switch PB4 are
Each is an illumination type with built-in pilot lamps PL3, PL4.

FIG. 3 shows an electric circuit of the hydraulic system 40 for a house. Power supply line 9 to which AC power supply voltage is applied
Between the 2 and the ground line 91, the electromagnetic relay (coil)
CR1, CR2, CR1a, CR1b, CR2a, CR
2b, CR3a, CR3b, the solenoid SOL1 of the control valve 51 for the multi-level parking device shown in FIG. A coil (motor coil) MC, a solenoid SOL4 of the lowering control valve 48, and wires W1, W2, ..., W13 for respectively energizing them are provided. In addition, in FIG. 3, a plurality of contacts of one relay are denoted by “CR1”, “CR2”, ...
They are distinguished by adding 2 ", ...

The wiring W1 for energizing the relay CR1 is provided with the starting switch PB1 and the normally closed contact CR2-.
2, CR3a-3 and CR3b-3 are provided. These normally closed contacts CR2-2, CR3a-3 and CR3b-3 are relays CR2, CR3a, CR3b.
When any one of them is turned on, it works as an interlock that prohibits turning on of the relay CR1.

The wiring W2 for energizing the relay CR2 is provided with the start switch PB2 and the normally closed contact CR1-.
2, CR3a-4 and CR3b-4 are provided. These normally closed contacts CR1-2, CR3a-4 and CR3b-4 are relays CR1, CR3a, CR3b.
When any one of them is turned on, it works as an interlock that prohibits turning on of the relay CR2.

Wiring W3 for energizing the relay CR1a
Is provided with a rising mode selection contact of the select switch SS1 and a limit switch LS1a, while the relay CR
Select switch S is provided on wiring W4 for energizing 1b.
S1 descending mode selection contact, limit switch LS1b
Are provided, and these wirings W3 and W4 are commonly connected to the power supply line 92 via the normally open contact CR1-1.

Similarly, the wiring W5 for energizing the relay CR2a is provided with the ascending mode selection contact of the select switch SS2 and the limit switch LS2a, while the wiring W6 for energizing the relay CR2b is lowered by the select switch SS2. A mode selection contact and a limit switch LS2b are provided, and these wirings W5 and W6 are commonly connected to the power supply line 92 via a normally open contact CR2-1.

Wiring W7 for energizing the relay CR3a
Includes a raising switch PB3 and normally closed contacts CR1-3.
CR2-3 and CR3b-5 and limit switch L
S3a and are provided. These normally closed contacts CR1
-3, CR2-3 and CR3b-5 are relay CR
It functions as an interlock for prohibiting ON of the relay CR3a when any one of 1, CR2 and CR3b is ON. A pilot lamp PL3 is connected in parallel to the relay CR3a, and when the relay CR3a is excited, the pilot lamp PL3 is turned on. Further, the normally open contact CR3a-0 is connected in parallel to the raising switch PB3. This normally open contact CR3a-0
When the relay CR3a is once turned on, the relay closes, and unless the limit switch LS3a is turned off to forcibly stop the energization, the closed state is maintained and the relay CR3a is kept on.

Similarly, the wiring W8 for energizing the relay CR3b has a lower switch PB4 and a normally closed contact CR.
1-4, CR2-4 and CR3a-5, and a limit switch LS3b are provided. These normally-closed contacts CR1-4, CR2-4, and CR3a-5 function as interlocks that prohibit ON of relay CR3b when any of relays CR1, CR2, CR3a is ON. Pilot lamp PL for relay CR3b
4 are connected in parallel, and the pilot lamp PL4 is turned on when the relay CR3b is excited. Further, the lowering switch PB4 has a normally open contact CR3b.
-0 is connected in parallel. This normally open contact CR3b
-0 is closed once relay CR3b is turned on,
Unless the limit switch LS3b is turned off and the energization is forcibly stopped, the closed state is maintained and the relay CR3b is kept on.

Solenoids SOL1, SOL2, SOL3
Normally connected contacts CR1a-1, CR1b-1; CR2 are respectively connected to the wirings W9, W10, W11 for energizing
a-1, CR2b-1; CR3a-1, CR3b-1 are provided in parallel with each other.

Wiring W for energizing the motor coil MC
12 are normally open contacts CR1a-2, CR2a-2, CR
3a-2 are provided in parallel with each other.

Further, the wiring W13 for energizing the solenoid SOL4 has normally open contacts CR1b-2, CR2b-.
2, CR3b-2 are provided in parallel with each other.

4 to 5 with reference to FIGS.
The operation of the residential hydraulic device 40 will be described with reference to the flow shown in FIG.

In the initial state, the starting switches PB1, PB2, the raising switch PB3, and the lowering switch PB4 shown in FIG. 2 are all off, and the residential hydraulic device 40 is set in the stop mode.

In this case, since the starting switch PB1 in FIG. 3 is off (S1 in FIG. 4), the relay CR1 is off (non-excitation) (S2). As a result, normally open contact C
R1-1 is opened and the relays CR1a and CR1b are off. As a result, the normally open contacts CR1a-1, CR
1b-1 is opened and the solenoid SOL1 is off (S3). In addition to this, relays CR2a, CR2
Since b, CR3a and CR3b are off, the normally open contacts C1b-2, CR2b-2, CR3b-2 are all open and the solenoid SOL4 is off (S4), and the normally open contacts C1a-2, CR2a are also open. -2, CR
All of 3a-2 are opened and the motor coil MC is turned off (S5). Further, since the starting switch PB2 is off (S6), the relay CR2 is off (non-excitation) (S7). As a result, the normally open contact CR2-1 is opened and the relays CR2a and CR2b are turned off. As a result, the normally open contacts CR2a-1 and CR2b-1 are opened and the solenoid SOL2 is turned off (S8). In addition to this, since the relays CR1a, CR1b, CR3a and CR3b are off, the normally open contact C1b-
2, CR2b-2, CR3b-2 are all opened to turn off the solenoid SOL4 (S9), and normally open contacts C1a-2, CR2a-2, CR3a-2 are all opened to turn off the motor coil MC. (S1
0). In addition, the up switch PB3 and the down switch P
Since B4 is off (S11, S12), relay C
R3a and CR3b are never turned on. Therefore, the normally open contacts CR3a-1 and CR3b-1 are all open and the solenoid SOL3 is off.

As described above, in the stop mode, the solenoids SOL1, SOL2, SOL3 and SOL4 are all turned off, the control valve 51 for the multilevel parking apparatus shown in FIG. 1 is closed, and the control valve 52 for the lifting bed apparatus is closed. , The elevator control valve 53 is set to be closed, and the descending control valve 48 is set to be closed. Further, the motor coil MC is turned off and the hydraulic pump 43 is stopped. Therefore, the working fluid does not move, and the multilevel parking device 10, the lifting bed device 20, and the elevator device 30 are all stopped.

Next, it is assumed that the user sets the select switch SS1 of the multi-level parking device operation panel 16 shown in FIG. 2 to the raising mode and turns on the activation switch PB1.

Even when the starting switch PB1 is turned on in FIG. 3 (S1 in FIG. 4), the relays CR2, CR are provided.
If either 3a or CR3b is on (S13-S
15), normally closed contacts CR2-2, CR3a-3, CR3
Any one of b-3 is opened and the relay CR1 is held off. In other words, the interlock is activated,
Turning on the relay CR1 is prohibited. Therefore, the relays CR1a and CR1b do not turn on, the solenoid SOL1 does not turn on, the control valve 51 for the multilevel parking device remains closed, and the multilevel parking device 10 maintains the stopped state.

On the other hand, the relays CR2, CR3a, CR3b
If all are off (S13 to S15), the normally closed contacts CR2-2, CR3a-3, CR3b-3 are all closed, so the relay CR1 is turned on (S16). As a result, the normally open contact CR1-1 is closed.

When the select switch SS1 is set to the rising mode (S31 in FIG. 5) and the limit switch LS1a is inactive (contact closed) (S32), the relay CR1a is turned on. . As a result, the normally open contact CR1a-1 is closed and the solenoid SOL1 is closed.
Is turned on (S35), the normally open contact CR1a-
2 is closed and the motor coil MC is turned on (S3
6). As a result, the three-dimensional parking apparatus raising mode for raising the pallet 11 of the three-dimensional parking apparatus 10 shown in FIG. 1 is set, and the three-dimensional parking apparatus control valve 51 is opened, the lifting bed apparatus control valve 52 is closed, and the elevator apparatus is used. The control valve 53 is closed and the lowering control valve 48 is closed.
Further, the hydraulic pump 43 is activated. Therefore, the working fluid is supplied from the hydraulic pump 43 through the main line 70 and the multi-level parking device branch line 71.
Is supplied to the hydraulic cylinder 12. As a result, the hydraulic cylinder 12 of the multilevel parking device 10 extends and the pallet 11 rises. At this time, the control valve 52 for the lifting bed device
Is closed, the elevator system control valve 53 is closed, and the descending control valve 48 is closed, so that the working fluid is the main line 7
It does not flow from 0 to the lift bed device branch line 72, the elevator device branch line 73, or the return line 74.

Even if the select switch SS1 is set to the up mode in FIG. 3 (S31 in FIG. 5), the pallet 11
Rises and the limit switch LS1a operates (contact opens) (S32), the relay CR1a turns off. As a result, the normally open contact CR1a-1 is opened to turn off the solenoid SOL1 (S33), and the normally open contact CR1a-2 is opened to turn off the motor coil MC (S34). Therefore, the control valve 51 for the multilevel parking device is closed, and the hydraulic pump 43 is stopped.
After that, when the user releases the start switch PB1 and turns it off, the stop mode is set.

Next, it is assumed that the user sets the select switch SS1 of the multi-level parking device operation panel 16 shown in FIG. 2 to the descending mode and turns on the activation switch PB1.

In FIG. 3, when the select switch SS1 is set to the descending mode (S31 in FIG. 5) and the limit switch LS1b is inactive (contact closed) (S37), the relay CR1b is turned on. . As a result, the normally open contact CR1b-1 is closed and the solenoid SOL1 is closed.
Is turned on (S38), and normally open contact CR1b-
2 is closed and the solenoid SOL4 is turned on (S3
9). As a result, the multi-level parking device lowering mode for lowering the pallet 11 of the multi-level parking device 10 shown in FIG. 1 is entered, the multi-level parking device control valve 51 is opened, the lift bed device control valve 52 is closed, and the elevator device is used. The control valve 53 is set to be closed and the lowering control valve 48 is set to be open.
Further, the hydraulic pump 43 is stopped. In this state, the working fluid flows from the hydraulic cylinder 12 of the multi-level parking device 10 to the multi-level parking device branch line 71 and a part of the main line 70 (the end 70b and the return line branch point) depending on the weight of the pallet 11 (and the vehicle). 70a) and return to the tank 50 through the return line 74. As a result, the hydraulic cylinder 12 of the multilevel parking device 10 contracts and the pallet 11 descends. At this time, since the control valve 52 for the lifting bed apparatus is closed and the control valve 53 for the elevator apparatus is closed, the working fluid is transferred from the main line 70 to the branch line 72 for the lifting bed apparatus or the branch line 73 for the elevator apparatus. It doesn't flow. Further, the check valve 45 provided in the main line 70 prevents the working fluid from flowing back to the hydraulic pump 43.

Even if the select switch SS1 is set to the descending mode in FIG. 3 (S31 in FIG. 5), the pallet 11
Is lowered and the limit switch LS1b is actuated (contacts are opened) (S37), the relay CR1b is turned off. As a result, the normally open contact CR1b-1 is opened to turn off the solenoid SOL1 (S40), and the normally open contact CR1b-2 is opened to turn off the solenoid SOL4 (S41). Therefore, the control valve 51 for the multilevel parking device is closed and the lowering control valve 48 is closed. After that, when the user releases the start switch PB1 and turns it off, the stop mode is set.

Next, the select switch SS2 of the lifting bed apparatus operation panel 26 shown in FIG. 2 is selected by the user.
Is set to the ascending mode and the activation switch PB2 is turned on.

Even when the starting switch PB2 is turned on in FIG. 3 (S6 in FIG. 4), the relays CR1 and CR are provided.
If either 3a or CR3b is on (S17-S
19), normally closed contacts CR1-2, CR3a-4, CR3
Any one of b-4 is opened and the relay CR2 is held off. In other words, the interlock is activated,
Turning on relay CR2 is prohibited. Therefore, the relays CR2a and CR2b do not turn on, the solenoid SOL2 does not turn on, the lift-bed device control valve 52 remains closed, and the lift-bed device 20 maintains the stopped state.

On the other hand, the relays CR1, CR3a, CR3b
If all are off (S17 to S19), the normally closed contacts CR1-2, CR3a-4, CR3b-4 are all closed, so the relay CR2 is turned on (S20). As a result, the normally open contact CR2-1 is closed.

When the select switch SS2 is set to the rising mode (S51 in FIG. 6) and the limit switch LS2a is inactive (contact closed) (S52), the relay CR2a is turned on. . As a result, the normally open contact CR2a-1 is closed and the solenoid SOL2 is closed.
Is turned on (S55), and normally open contact CR2a-
2 is closed and the motor coil MC is turned on (S5
6). As a result, the elevator bed device raising mode for raising the bed upper body portion 21 of the elevator bed device 20 shown in FIG. 1 is set, and the control valve 51 for the multilevel parking device device is closed and the control valve 52 for the elevator bed device is opened. The elevator control valve 53 is set to be closed, and the descending control valve 48 is set to be closed. Further, the hydraulic pump 43 is activated. Therefore, the working fluid is supplied from the hydraulic pump 43 to the hydraulic cylinder 22 of the lifting bed apparatus 20 through the main line 70 and the lifting bed apparatus branch line 72.
As a result, the hydraulic cylinder 22 of the lifting bed device 20 extends and the upper half of the bed 21 rises. At this time, the control valve 51 for the multilevel parking device is closed, the control valve 53 for the elevator device is closed, and the lowering control valve 48 is closed.
The working fluid does not flow from the main line 70 to the multi-level parking device branch line 71, the elevator device branch line 73, or the return line 74.

Even when the select switch SS2 is set to the raising mode in FIG. 3 (S51 in FIG. 6), when the upper half of the bed 21 is raised and the limit switch LS2a is activated (contacts are opened) (S52), Relay CR2a turns off. As a result, the normally open contact CR2a-1 is opened to turn off the solenoid SOL2 (S53), and the normally open contact CR2a-2 is opened to turn off the motor coil MC (S54). Therefore, the lifting bed device control valve 52 is closed, and the hydraulic pump 43 is stopped. After that, when the user releases the start switch PB2 to turn it off, the stop mode is set.

Next, the select switch SS2 of the lifting bed apparatus operation panel 26 shown in FIG. 2 by the user.
Is set to the descending mode, and the starting switch PB2 is turned on.

In FIG. 3, when the select switch SS2 is set to the descending mode (S51 in FIG. 6) and the limit switch LS2b is inactive (contact closed) (S57), the relay CR2b is turned on. . As a result, the normally open contact CR2b-1 is closed and the solenoid SOL2 is closed.
Is turned on (S58), the normally open contact CR2b-
2 is closed and the solenoid SOL4 is turned on (S5
9). As a result, the elevator bed device lowering mode for lowering the bed upper body portion 21 of the elevator bed device 20 shown in FIG. 1 is entered, and the control valve 51 for the multilevel parking device device is closed and the control valve 52 for the elevator bed device is opened. The elevator control valve 53 is set to be closed and the lowering control valve 48 is set to be open. Further, the hydraulic pump 43 is stopped. In this state, the working fluid flows from the hydraulic cylinder 22 of the lifting / lowering bed apparatus 20 to the lifting / lowering bed apparatus branch line 72 and a part of the main line 70 (the terminal end 70b and the return line) depending on the weight of the bed upper body portion 21 (and the human body). Branch point 7
0a), the tank 5 through the return line 74
Return to 0. As a result, the hydraulic cylinder 22 of the lifting bed device 20 contracts, and the upper half of the bed 21 is lowered. At this time, since the control valve 51 for the multi-level parking device is closed and the control valve 53 for the elevator device is closed, the working fluid is branched from the main line 70 to the multi-level parking device branch line 71.
Alternatively, it does not flow to the elevator system branch line 73. In addition, the check valve 45 provided in the main line 70
Prevents the working fluid from flowing back to the hydraulic pump 43.

Even when the select switch SS2 is set to the descending mode in FIG. 3 (S51 in FIG. 6), when the upper body part 21 of the bed descends and the limit switch LS2b operates (contact opens) (S57), Relay CR2b turns off. As a result, the normally open contact CR2b-1 is opened and the solenoid SOL2 is turned off (S60), and the normally open contact CR2b-2 is opened and the solenoid SOL4 is opened.
Turns off (S61). Therefore, the control valve 52 for the lifting bed device is closed and the control valve 48 for the lowering device is closed. After this, when the user releases the start switch PB2 and turns it off,
It becomes the stop mode.

Next, it is assumed that the user turns on the raising switch PB3 of the elevator device operation panel 36 shown in FIG. When the user releases his / her finger, the raising switch PB3 immediately returns to the off state by itself.
At this time, the passenger car 31 of the elevator apparatus 30 is in the lowered position, and the limit switch LS3a is inactive (contacts are closed).

Even if the raising switch PB3 is turned on in FIG. 3 (S11 in FIG. 4), the relays CR1, CR2, CR are provided.
If any of 3b is turned on (S21 to S23), one of normally closed contacts CR1-3, CR2-3, CR3b-5 is opened and relay CR3a is held off. In other words, the interlock operates and relay CR
Turning on 3a is prohibited. Therefore, the solenoid SO
L3 does not turn on, the elevator apparatus control valve 53 remains closed, and the elevator apparatus 30 maintains the stopped state.

On the other hand, if the relays CR1, CR2, CR3b are all off (S21 to S23), the normally closed contact C
Since R1-3, CR2-3 and CR3b-5 are all closed, the relay CR3a is turned on (S24). Relay C
Since the normally open contact CR3a-0 is closed once R3a is turned on, unless the limit switch LS3a operates (contact opens) and the energization is forcibly stopped, the relay CR
The ON state of 3a is maintained. Further, since the limit switch LS3a is inactive (contact is closed) (S7 in FIG. 7).
1), the rising lamp PL3 is turned on (S72). Further, as a result of the relay CR3a turning on, the normally open contact CR3
While a-1 is closed and the solenoid SOL3 is turned on (S73), the normally open contact CR3a-2 is closed and the motor coil MC is turned on (S74). This allows
In the elevator device raising mode for raising the passenger car 31 of the elevator device 30 shown in FIG. 1, the control valve 51 for the multilevel parking device device is closed, and the control valve 52 for the lifting bed device 52.
Is closed, the elevator control valve 53 is opened, and the lowering control valve 48 is closed. Further, the hydraulic pump 43 is activated. Therefore, the working fluid is supplied from the hydraulic pump 43 to the hydraulic cylinder 32 of the elevator device 30 through the main line 70 and the elevator device branch line 73. As a result, the hydraulic cylinder 32 of the elevator device 30 extends and the passenger car 31 rises. At this time, the control valve 51 for the multilevel parking device is closed,
Since the lifting bed device control valve 52 is closed and the lowering control valve 48 is closed, the working fluid is transferred from the main line 70 to the multilevel parking device branch line 71, the lifting bed device branch line 72, or the return line 74. It doesn't flow.

When the passenger car 31 is raised and the limit switch LS3a is actuated (contacts are opened) (S7 in FIG. 7).
1), the relay CR3a shown in FIG. 3 is turned off (S75), and the rising lamp PL3 is turned off (S7).
6). Normally open contact CR as a result of relay CR3a turning off
3a-1 is opened to turn off the solenoid SOL3 (S77), and the normally open contact CR3a-2 is opened to turn off the motor coil MC (S78). Therefore, the elevator system control valve 53 is closed and the hydraulic pump 43 is stopped. As a result, the stop mode is automatically set.

Next, it is assumed that the user turns on the lowering switch PB4 of the elevator device operation panel 36 shown in FIG. When the user releases the finger, the lowering switch PB4 immediately returns to the off state by itself.
At this time, the passenger car 31 of the elevator apparatus 30 is in the raised position, and the limit switch LS3b is inactive (contacts are closed).

Even if the lowering switch PB4 is turned on in FIG. 3 (S12 in FIG. 4), the relays CR1, CR2, CR are provided.
If any of 3a is on (S25 to S27), one of normally closed contacts CR1-4, CR2-4, CR3a-5 is opened and relay CR3b is kept off. In other words, the interlock operates and relay CR
Turning on 3b is prohibited. Therefore, the solenoid SO
L3 does not turn on, the elevator apparatus control valve 53 remains closed, and the elevator apparatus 30 maintains the stopped state.

On the other hand, if the relays CR1, CR2 and CR3a are all off (S25 to S27), the normally closed contact CR is used.
Since all of 1-4, CR2-4 and CR3a-5 are closed, relay CR3b is turned on (S28). Relay CR
Since the normally open contact CR3b-0 is closed once 3b is turned on, unless the limit switch LS3b operates (contact opens) to forcibly stop the energization, the relay CR3b-0 is closed.
The ON state of 3b is maintained. Further, since the limit switch LS3b is inactive (contact is closed) (S8 in FIG. 8).
1), the descending lamp PL3 is turned on (S82). Furthermore, as a result of the relay CR3b turning on, the normally open contact CR3
While b-1 is closed to turn on the solenoid SOL3 (S83), the normally open contact CR3b-2 is closed to turn on the solenoid SOL4 (S84). As a result, the elevator device lowering mode for lowering the passenger car 31 of the elevator device 30 shown in FIG. 1 is entered, the control valve 51 for the multilevel parking device device is closed, the control valve 52 for the lifting bed device is closed, and the elevator valve device control valve 52 is closed. The control valve 53 is set to open and the lowering control valve 48 is set to open. Also,
The hydraulic pump 43 is stopped. In this state, the working fluid flows from the hydraulic cylinder 32 of the elevator device 30 to the elevator device branch line 73 and a part of the main line 70 (terminal 7) depending on the weight of the passenger car 31 (and passengers, etc.).
0b and the return line branch point 70a) and the return line 74 to return to the tank 50. As a result, the hydraulic cylinder 32 of the elevator device 30 contracts and the passenger car 31 descends. At this time, since the control valve 51 for the multilevel parking device is closed and the control valve 52 for the lifting bed device is closed, the working fluid is branched from the main line 70 to the branch line 71 for the multilevel parking device or the branch line for the lifting bed device. It does not flow to line 72. Further, the check valve 45 provided in the main line 70 prevents the working fluid from flowing back to the hydraulic pump 43.

When the passenger car 31 descends and the limit switch LS3b operates (contacts open) (S8 in FIG. 8).
1), the relay CR3b shown in FIG. 3 is turned off (S85), and the descending lamp PL4 is turned off (S8).
6). Normally open contact CR as a result of relay CR3b turning off
3b-1 is opened to turn off the solenoid SOL3 (S87), and the normally open contact CR3b-2 is opened to turn off the solenoid SOL4 (S88). Therefore, the elevator control valve 53 is closed and the lowering control valve 4 is
8 is closed. As a result, the stop mode is automatically set.

In this way, this residential hydraulic system 40
Can satisfactorily drive the multi-level parking device 10, the lifting bed device 20, and the elevator device 30 with one hydraulic pump 43. Therefore, as compared with the case where the multi-level parking device 10, the lifting bed device 20, and the elevator device 30 are independently driven, cost reduction and space saving can be achieved.

Further, the relays CR1, CR2, CR3a,
When one of the relays CR3b is on, the interlock prohibits the rest of the relays CR1, CR2, CR3a, and CR3b from turning on. Therefore, the solenoids SOL1, SOL2, S
When one solenoid of OL3 is on,
The remaining solenoids of these solenoids SOL1, SOL2 and SOL3 are prohibited from turning on. That is, when one of the three-dimensional parking apparatus control valve 51, the lift bed apparatus control valve 52, and the elevator apparatus control valve 53 is open, those control valves 51, 52,
The remaining control valves of 53 are prohibited from opening. Therefore, for example, when the multi-level parking device 10 is moving up and down, the working fluid is supplied or discharged only to the hydraulic cylinders 12 of the multi-level parking device 10, even if the user moves the lifting bed device 20 and the elevator device 30 up and down. Even if the switches are operated, those devices 2
The working fluid is not supplied to or discharged from the hydraulic cylinders 22 and 32 of 0 and 30. Similarly, when the lift bed device 20 is moving up and down, the working fluid is supplied or discharged only to the hydraulic cylinders 22 of the lift bed device 20, and even if the user moves the multi-level parking device 10 and the elevator device 30 up and down. Even if the switch operation is performed, the working fluid is not supplied to or discharged from the hydraulic cylinders 12 and 32 of these devices 10 and 30, respectively. Similarly, the elevator device 30
When the vehicle is moving up and down, the working fluid is supplied or discharged only to the hydraulic cylinders 32 of the elevator apparatus 30, and even if the user performs a switch operation for moving up and down the multi-level parking apparatus 10 and the lifting bed apparatus 20. Also the hydraulic cylinders 12, 2 of those devices 10, 20
With respect to No. 2, the working fluid is not supplied or discharged. Thus, when one of the multi-level parking device 10, the lifting bed device 20, and the elevator device 30 is moving up and down, the working fluid is supplied or discharged only to the hydraulic cylinders of the device, and the remaining devices. The working fluid is neither supplied to nor discharged from the hydraulic cylinders. Therefore, the supply speed and the discharge speed of the working fluid with respect to the hydraulic cylinder of the device 10, 20 or 30 during the lifting operation can be stabilized, and the lifting operation of the device 10, 20 or 30 can be smoothly performed.

In the hydraulic system 40 for a house, the control valve 51 for the multilevel parking device, the control valve 52 for the lifting bed device,
To prevent the remaining control valves of the control valves 51, 52, 53 from opening when one of the elevator control valves 53 is open, ie
When one of the solenoids SOL1, SOL2, SOL3 is turned on, the relay relay CR is provided to prevent the remaining solenoids of the solenoids SOL1, SOL2, SOL3 from being turned on.
An interlock device consisting of 1, CR2, CR3a and CR3b was adopted. However, the interlock device is not limited to the relay. For example, an interlock device using software such as a microcomputer may be adopted.

The operation of the entire hydraulic system 40 for a house may be controlled by software such as a microcomputer instead of the relay circuit shown in FIG.

Further, branch lines similar to the above branch lines 71, 72, 73 are added downstream of the check valve 45 of the housing device 40, and other home automation equipment such as a lifting table, an attic, and the like. You may make it drive a storage, an underground storage, etc.

[0086]

EFFECTS OF THE INVENTION As is clear from the above, in the hydraulic system for a house according to claim 1, one pump for discharging the working fluid to the main line, the check valve provided in the main line, and the check valve are provided. A descending control valve that is provided on the return line that branches from the downstream side of the valve to the tank, and a three-dimensional structure that branches from the downstream side of the check valve and that is connected to the port of the single-acting hydraulic cylinder of the three-dimensional parking device. A control valve for a multi-storey parking device, which is provided on a parking device branch line and can open and close this branch line, and a branch from a downstream side of the check valve to connect to a port of a single-acting hydraulic cylinder of an elevator device. Since it is equipped with a control valve for elevator equipment that is installed in the branch line for elevator equipment that can open and close this branch line, a single pump is sufficient for the multi-level parking device and the elevator device. It can be driven to. Therefore, as compared with the case where the multi-level parking device and the elevator device are independently driven, cost reduction and space saving can be achieved.

According to a second aspect of the present invention, there is provided the residential hydraulic system according to the first aspect, wherein the check valve is used to drive an elevating bed device that elevates and lowers a bed by expanding and contracting a single-acting hydraulic cylinder. Is provided on a lift line bed branch line branched from a downstream side and connected to the port of the hydraulic cylinder of the lift bed device, and is provided with a lift bed device control valve capable of opening and closing the branch line. Therefore, the multilevel parking device, the lifting bed device, and the elevator device can be favorably driven by one pump. Therefore, cost reduction and space saving can be achieved as compared with the case where the multi-level parking device, the lifting bed device, and the elevator device are independently driven.

In the hydraulic system for a house according to claim 3, when one of the control valves provided in each of the plurality of branch lines is open, an interlock device is provided in each of the plurality of branch lines. The remaining control valves of the control valves are prevented from opening, so that when one of the plurality of devices is moving up and down, the working fluid is supplied only to the single-acting hydraulic cylinder of the device. It is supplied or discharged, and even if the user operates the switch for raising and lowering the rest of the plurality of devices, the working fluid is supplied or discharged to the single-acting hydraulic cylinders of the remaining devices. It will not be done. Therefore, it is possible to stabilize the supply speed and the discharge speed of the working fluid with respect to the single-acting hydraulic cylinder of the one device during the elevating operation, and the elevating operation of the device can be smoothly performed.

According to another aspect of the hydraulic system for a house of the present invention, when fluid is discharged from the hydraulic cylinder of the multi-story parking apparatus at a certain speed or more between the multi-story parking apparatus and the multi-story parking apparatus control valve, Since a pilot operated opening / closing valve that is closed by the differential pressure is provided, if the upstream side of the pilot operating opening / closing valve of the main line or the branch line for the multilevel parking device bursts, the pilot operated opening / closing valve is opened. By closing the valve, it is possible to prevent the pallet from dropping suddenly. In addition, a pilot operated on-off valve is provided between the elevator apparatus and the elevator apparatus control valve, which is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder of the elevator apparatus at a certain speed or more. Therefore, if the upstream side of the pilot operated opening / closing valve in the main line or the branch line for elevators is ruptured, the pilot operated opening / closing valve is closed to prevent a sudden fall of the passenger car. it can. Therefore, the safety of the multilevel parking device and the elevator device can be improved.

According to another aspect of the hydraulic system for a house of the present invention, when fluid is discharged from the hydraulic cylinder of the multi-story parking device at a certain speed or more between the multi-story parking device and the multi-story parking device control valve, Since a pilot operated opening / closing valve that is closed by the differential pressure is provided, if the upstream side of the pilot operating opening / closing valve of the main line or the branch line for the multilevel parking device bursts, the pilot operated opening / closing valve is opened. By closing the valve, it is possible to prevent the pallet from dropping suddenly. Further, between the lifting bed apparatus and the lifting bed apparatus control valve, a pilot operated on-off valve which is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder of the lifting bed apparatus at a certain speed or more. Since the main line and the branch line for the lifting bed device upstream of the pilot operated opening / closing valve are ruptured, the pilot operated opening / closing valve is closed and the bed portion is suddenly closed. Can be prevented from falling. In addition, a pilot operated on-off valve is provided between the elevator apparatus and the elevator apparatus control valve, which is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder of the elevator apparatus at a certain speed or more. Therefore, if the upstream side of the pilot operated opening / closing valve in the main line or the branch line for elevators is ruptured, the pilot operated opening / closing valve is closed to prevent a sudden fall of the passenger car. it can. Therefore, the safety of the multilevel parking device, the lifting bed device, and the elevator device can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a hydraulic circuit of a residential hydraulic device embodying the present invention.

FIG. 2 is a diagram showing an operation panel for a multi-level parking apparatus, an operation panel for a lifting bed apparatus, and an operation panel for an elevator apparatus.

FIG. 3 is a diagram showing an electric circuit of the residential hydraulic device.

FIG. 4 is a diagram showing an operation flow of the residential hydraulic device.

FIG. 5 is a diagram showing an operation flow of the residential hydraulic device.

FIG. 6 is a diagram showing an operation flow of the residential hydraulic device.

FIG. 7 is a diagram showing an operation flow of the residential hydraulic device.

FIG. 8 is a diagram showing an operation flow of the residential hydraulic device.

FIG. 9 is a diagram showing a conventional hydraulic system for a house.

[Explanation of Codes] 10 multi-level parking device 12, 22, 32 single-acting hydraulic cylinder 20 lift bed device 30 elevator device 41 hydraulic unit 43 hydraulic pump 45 check valve 48 lowering control valve 51 multi-level parking device control valve 52 lift bed Control valve for equipment 53 Control valve for elevator equipment 61, 62, 63 Fuse valve

Claims (5)

[Claims] 1. A multilevel parking device (10) for elevating and lowering a pallet (11) on which an automobile is mounted by expanding and contracting a single-acting hydraulic cylinder (12), and a passenger car (31) by expanding and contracting a single-acting hydraulic cylinder (32). A hydraulic system for a house, comprising an elevator device (30) for raising and lowering a pump, comprising: a pump (43) for discharging a working fluid to a main line (70); and a check valve provided on the main line (70). Valve (45)
And a lowering control valve (48) provided in a return line (74) branching from the downstream side of the check valve (45) to reach the tank (50), and more than the check valve (45). It is provided on a branch line (71) for a multilevel parking device that branches from the downstream side and is connected to the port of the hydraulic cylinder (12) of the multilevel parking device (10), and the branch line (71) can be opened and closed. A control valve (51) for a multi-level parking device that can be used, and a branch line for an elevator device that branches from a downstream side of the check valve (45) and is connected to a port of the hydraulic cylinder (32) of the elevator device (30). A hydraulic apparatus (40) for a house, comprising a control valve (53) for an elevator device, which is provided in (73) and can open and close the branch line (73). 2. The residential hydraulic system according to claim 1, wherein the bed portion (2) is formed by expanding and contracting a single-acting hydraulic cylinder (22).
1) is branched from the downstream side of the check valve (45) and connected to the port of the hydraulic cylinder (22) of the lifting bed device (20) so as to drive the lifting bed device (20) that lifts and lowers 1). A hydraulic system for a house, characterized by comprising a control valve (52) for a lifting bed apparatus, which is provided in the branch line (72) for a lifting bed apparatus and is capable of opening and closing the branch line (72). 3. The residential hydraulic system according to claim 1 or 2, wherein one of the control valves (51, 52, 53) provided in each of the plurality of branch lines (71, 72, 73) is provided. When the control valve is open, the branch lines (7
1, 72, 73) provided with control valves (51,
52, 53) interlock devices (CR2-2, CR3a-3, CR) that prevent the remaining control valves from opening.
3b-3; CR1-2, CR3a-4, CR3b-4;
CR1-3, CR2-3, CR3b-5; CR1-4
CR2-4, CR3a-5) is provided, the hydraulic system for a house characterized by the above-mentioned. 4. The hydraulic system for a house according to claim 1, wherein the hydraulic pressure of the multi-level parking device (10) is provided between the multi-level parking device (10) and the multi-level parking device control valve (51). A pilot operated opening / closing valve (61) that is closed by a differential pressure between the front and rear when fluid is discharged from the cylinder (12) at a certain speed or higher is provided, and the elevator device (30) and the elevator device control valve (53) are provided. A pilot operated on-off valve (63) which is closed between the hydraulic cylinders (32) of the elevator device (30) at a constant speed or higher by a differential pressure between the front and the rear. Hydraulic system for housing. 5. The hydraulic system for a house according to claim 2, wherein the hydraulic pressure of the multi-level parking device (10) is provided between the multi-level parking device (10) and the multi-level parking device control valve (51). A pilot operated on-off valve (61) is provided which is closed by a differential pressure between the front and rear when fluid is discharged from the cylinder (12) at a certain speed or more, and the lift bed device (20) and the lift bed device control valve (52) are provided. ) Is provided with a pilot operated on-off valve (62) which is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder (22) of the lifting bed device (20) at a constant speed or more, and Elevator equipment (30)
Between the control valve (53) and the elevator control valve (53) is closed by a differential pressure between the front and rear when fluid is discharged from the hydraulic cylinder (32) of the elevator apparatus (30) at a constant speed or higher. A hydraulic system for a house, which is provided with a valve (63).