JP2004001969A - Hydraulic elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify an operation for rescuing passengers locked in a car at the time of blackout, malfunction and the like while saving a space occupying a building. <P>SOLUTION: A rescuing operation panel 20 having a manual lowering valve 19 is installed at a riding place of any floor, where a car is seated. When the car is stopped by blackout, malfunction and the like and the passengers are locked in the car, an operator operates the manual lowering valve 19 of the rescuing operation panel 20 installed at the riding place to move the car towards a nearest down floor, so that the passengers locked in the car are rescued to the riding place. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a hydraulic elevator having a structure in which a hydraulic power unit and a control device are installed in a pit below a hoistway.
[0002]
[Prior art]
Hydraulic elevators supply hydraulic oil pressurized by a hydraulic power unit into a cylinder of a hydraulic jack, and push up a plunger by the pressure of the hydraulic oil to raise a car in a hoistway. By collecting hydraulic oil from a cylinder into an oil tank of a hydraulic power unit, a car is lowered in a hoistway.
[0003]
In such a hydraulic elevator, a separate machine room is provided in the building separately from the hoistway where the car rises and lowers.In this machine room, a hydraulic power unit for supplying and recovering hydraulic oil and a hydraulic elevator as a whole are provided. Generally, a control device or the like for controlling the operation is provided.
[0004]
However, if an independent machine room is provided in the building separately from the hoistway, the use space of the building is reduced correspondingly, so it is disadvantageous for effective use of the building, and in consideration of vibration from the hydraulic power unit, There are also design restrictions such as the inability to place a living room or the like near the machine room.
[0005]
Therefore, in recent years, a hydraulic elevator in which a hydraulic power unit and a control device are installed in a space called a pit below the hoistway has been proposed. In this hydraulic elevator, there is no need to provide an independent machine room separately from the hoistway, so that the space occupied by the hydraulic elevator can be reduced, and the use efficiency of the building can be improved. Constraints will also be relaxed.
[0006]
[Problems to be solved by the invention]
By the way, in the above-mentioned hydraulic elevator, when the car stops at a place other than the landing due to power failure or failure, etc., and passengers are trapped inside the car, the car is moved to the nearest floor at low speed. They are moving to rescue the passengers in the car.
[0007]
Such an operation is generally performed in the following procedure. That is, first, an electrical abnormality of the hydraulic elevator is checked using a check terminal provided in the control device. If there is no electrical abnormality, operate the hydraulic power unit using the power from the emergency power supply, etc., move the car to the nearest floor at low speed, and open the car door and landing door. The passengers in the car are rescued to the landing. When an electrical abnormality of the hydraulic elevator is detected, the manual lowering valve provided in the hydraulic power unit is operated to collect a predetermined amount of hydraulic oil from the cylinder of the hydraulic jack so that the car can be lifted. Move to the nearest lower floor. Then, the car door and the landing door are opened to rescue the passengers in the car to the landing.
[0008]
As described above, when rescuing a passenger trapped in a car at the time of a power outage or breakdown, check the electrical abnormality of the hydraulic elevator using the check terminal provided in the control device, The car is manually lowered by operating the manual lowering valve provided in the hydraulic power unit according to the conditions, so the operator needs to work in the place where the control device and the hydraulic power unit are installed. Was.
[0009]
For this reason, in particular, in a hydraulic elevator having a structure in which a control device and a hydraulic power unit are installed in a pit below a hoistway, workers are required to work in a pit, which is a narrow space, which is a problem in terms of workability. Was the cause of the decline. In addition, if the pit is enlarged in order to improve workability, there is a problem that the advantage of space saving of a building occupied space realized by not providing a machine room is impaired.
[0010]
The present invention has been made in view of the above-described conventional circumstances, and rescues passengers trapped in a car at the time of a power outage or breakdown while reducing the space occupied by a building. It is an object of the present invention to provide a hydraulic elevator capable of easily performing the work of performing the above operation.
[0011]
[Means for Solving the Problems]
In the present invention, a hydraulic jack for raising and lowering the car is erected in a hoistway, and a hydraulic power unit and a control device for supplying and recovering hydraulic oil to and from the hydraulic jack are provided in a pit below the hoistway. In a hydraulic elevator installed, a rescue operation panel having a manual descending valve for manually collecting hydraulic oil from the hydraulic jack to the power unit at at least one of landings where the car is to land. Is provided.
[0012]
In the hydraulic elevator according to the present invention as described above, a rescue operation panel is provided in at least one of the landings on which the car landing, and a manual descending valve is provided in the rescue operation panel. If passengers are trapped in the car during a power outage or breakdown, operate the manual lowering valve at the landing to land the car on the nearest lower floor, The passengers trapped in the can be rescued.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
1 and 2 show a configuration example of a hydraulic elevator to which the present invention is applied. The hydraulic elevator 1 shown in FIGS. 1 and 2 is configured as a so-called indirect hydraulic elevator, and the force of a hydraulic jack 3 erected in a hoistway 2 of a building is controlled by a rope 4 (or a chain). , The car 5 is moved up and down in the hoistway 2 to land on the destination floor. FIG. 1 is a plan view of the inside of the hoistway 2 of the hydraulic elevator 1 to which the present invention is applied, as viewed from above, and FIG. 2 is a side view of the inside of the hoistway 2 as viewed from the direction of arrow A in FIG.
[0015]
The hydraulic jack 3 erected in the hoistway 2 is composed of a cylinder 3a and a plunger 3b. The cylinder 3a of the hydraulic jack 3 is connected to the hydraulic power unit 6 via a piping member (not shown). The hydraulic jack 3 supplies the hydraulic oil pressurized by the hydraulic power unit 6 into the cylinder 3 a under the control of the control device 7 which controls the operation of the entire hydraulic elevator 1. , The plunger 3b is raised. Also, the working oil in the cylinder 3a is collected in an oil tank provided in the hydraulic power unit 6, so that the plunger 3b is lowered.
[0016]
A plunger sheave 8 is attached to the upper end of the plunger 3 b of the hydraulic jack 3. The plunger sheave 8 has an intermediate portion of the rope 4 for transmitting the vertical movement of the plunger 3 b to the car 5.
[0017]
The car 5 has a structure in which a car room 5a for carrying a load is supported by a lower beam member 5b. The car room 5a is provided with a car door 9, and when the car 5 arrives at the destination floor, the car door 9 is linked with the landing door 11 provided at the landing 10 on the destination floor. It is designed to be opened and closed. Further, a pair of lower car sheaves 12a and 12b are attached to the lower beam member 5b below. As in the case of the plunger sheave 8, an intermediate portion of the rope 4 for transmitting the up-and-down movement of the plunger 3 b to the car 5 is laid over the lower sheaves 12 a and 12 b of the car.
[0018]
One end of the rope 4 is fixed to a locking member 13 provided on the hydraulic jack 3, an intermediate portion thereof is hung over the plunger sheave 8 and the pair of car sheaves 12 a, 12 b, and the other end is formed. It is fixed to the upper part of the hoistway 2 by a rope fastener 14. The rope 4 causes the vertical movement of the plunger 3b of the hydraulic jack 3 to act on the car 5 via a pair of lower car sheaves 12a and 12b, and causes the car 5 to perform a vertical movement in the hoistway 2. Has become.
[0019]
As shown in FIG. 3, the hydraulic power unit 6 has an oil tank 15 for storing hydraulic oil. The hydraulic oil stored in the oil tank 15 is supplied to a hydraulic pump 17 driven by a motor 16. Thus, suction is performed in a state where the pressure is increased to a predetermined pressure. Then, the hydraulic oil sucked from the oil tank 15 is supplied into the cylinder 3a of the hydraulic jack 3 via a piping member. A control valve 18 is provided in the middle of a pipe member connecting the hydraulic pump 17 and the cylinder 3a of the hydraulic jack 3, and the opening of the control valve 18 is adjusted under the control of the control device 7. Thus, the flow rate of the working oil supplied into the cylinder 3a of the hydraulic jack 3 is controlled. The control valve 18 is also connected to a piping member for collecting hydraulic oil, and the opening of the control valve 18 connected to the piping member for collecting hydraulic oil is adjusted under the control of the control device 7. Thus, a predetermined amount of hydraulic oil in the cylinder 3a of the hydraulic jack 3 is recovered to the oil tank 15 via the piping member.
[0020]
Further, in the hydraulic power unit 6, a piping member for collecting hydraulic oil is branched before the control valve 18, and a part of the branched piping member for collecting hydraulic oil is provided outside the hydraulic power unit 6. It is to be led to. A manual lowering valve 19 is provided in the middle of the piping member for collecting hydraulic oil which is routed outside the hydraulic power unit 6. The manual lowering valve 19 allows the operating oil in the cylinder 3a of the hydraulic jack 3 to be transferred to the oil tank 15 even when the control valve 18 cannot be electrically controlled due to a power failure or a failure due to manual operation by an operator. It is for collecting and lowering the car 5. In the hydraulic elevator 1 to which the present invention is applied, the manual lowering valve 19 is disposed on a rescue operation panel 20 described later installed in the hall 10, and an operator operates the manual lowering valve 19 from the hall 10 side. I can do it.
[0021]
The control device 7 controls the entire operation of the hydraulic elevator 1 such as control of the operating state of the car 5 and speed control, and control of opening and closing of the car door 9 and the landing door 10, and includes a control circuit, a safety circuit, and a door circuit. And other various electric circuits are incorporated. Various electric circuits incorporated in the control device 7 can detect an electric abnormality by a check terminal. In the hydraulic elevator 1 to which the present invention is applied, a check terminal for detecting an electrical abnormality of various electric circuits incorporated in the control device 7 is connected to the landing 10 in the same manner as the above-described manual lowering valve 19. It is arranged on the installed rescue operation panel 20 so that an operator can check an electrical abnormality of various electric circuits incorporated in the control device 7 from the landing 10 side.
[0022]
The hydraulic elevator 1 to which the present invention is applied has a structure in which the hydraulic power unit 6 and the control device 7 are installed in a pit 21 provided below the hoistway 2. The hydraulic power unit 6 and the control device 7 are disposed in the pit 21 so as not to overlap with the car 5 in a plan view, and when the car 5 descends further below the lowest floor for some reason. However, interference with the car 5 is prevented beforehand. In the hydraulic elevator 1, as described above, the hydraulic power unit 6 and the control device 7 are installed in the pit 21 below the hoistway 2 so that an independent machine room for installing the hydraulic power unit 6 and the control device 7 is provided. Need not be provided separately from the hoistway 2, and the space occupied by the building can be saved.
[0023]
The rescue operation panel 20 is configured to rescue the passengers in the car 5 when the car 5 stops at a place other than the landing 10 due to a power failure or a failure and the passengers are trapped in the car 5. It is for performing various inspection work, and is disposed at a predetermined position of the landing 10, specifically, for example, below a landing operation panel 22 provided on the side of the landing door 11 as shown in FIG. ing. The rescue operation panel 20 can be operated by a worker from the landing 10 side. The rescue operation panel 20 may be provided on all the landings 10 on each floor of the building, or may be provided only on the landing 10 on any one floor. When the rescue operation panel 20 is provided at the landing 10 on any one of the floors, the rescue operation panel 20 is installed in consideration of the layout of piping and wiring from the hydraulic power unit 6 and the control device 7 installed in the pit 21. The operation panel 20 is desirably provided at the landing 10 on the lowest floor.
[0024]
When the rescue operation panel 20 is not in use, as shown in FIG. 5, the inside is closed by a lid 23 and locked by a cylinder lock 24 or the like. Operation is prevented. The rescue operation panel 20 allows the operator to operate the manual lowering valve 19 and the like by releasing the lock of the cylinder lock 24 and the like and opening the lid 23 as shown in FIG. Has become.
[0025]
In addition to the manual descending valve 19, the rescue operation panel 20 includes a pressure gauge 25, a normal / stop changeover switch 26, a normal / inspection changeover switch 27, an interphone connector 28, a remote control connector 29, and the above-described check terminal 30. Is provided.
[0026]
The pressure gauge 25 indicates the pressure of hydraulic oil supplied from the hydraulic power unit 6 into the cylinder 3a of the hydraulic jack 3. In the hydraulic elevator 1 to which the present invention is applied, such a pressure gauge 25 is provided on the rescue operation panel 20 installed on the landing 10, so that the worker can move inside the pit 21 on which the hydraulic power unit 6 is installed. The pressure of the hydraulic oil can be checked from the landing 10 without entering.
[0027]
The normal / stop switch 26 is a switch for switching between normal operation and operation stop of the hydraulic elevator 1. The normal / stop changeover switch 26 is connected to the control device 7 installed in the pit 2, and the operation of the normal / stop changeover switch 26 is reflected on the control by the control device 7. In an emergency or the like, the operator operates the normal / stop changeover switch 26 to stop the operation of the hydraulic elevator 1 to ensure safety. In the hydraulic elevator 1 to which the present invention is applied, such a normal / stop changeover switch 26 is provided on the rescue operation panel 20 installed on the landing 10, so that the operator can operate the pit on which the control device 7 is installed. The switching between the normal operation and the operation stop of the hydraulic elevator 1 can be performed from the landing 10 without entering the inside of the hall 10.
[0028]
The normal / inspection switch 27 is a switch for switching the operation mode of the hydraulic elevator 1 between the normal operation and the inspection operation. The normal / inspection changeover switch 27 is connected to the control device 7 installed in the pit 2, and the operation of the normal / inspection changeover switch 27 is reflected in the control by the control device 7. At the time of inspection, the operator operates the normal / inspection changeover switch 27 to switch the operation mode of the hydraulic elevator 1 to the inspection operation mode, and moves the car 5 up and down in the inspection operation mode. In the hydraulic elevator 1 to which the present invention is applied, such a normal / inspection changeover switch 27 is provided on the rescue operation panel 20 installed on the landing 10, so that the operator can operate the pit on which the control device 7 is installed. The operating mode between the normal operation and the inspection operation of the hydraulic elevator 1 can be switched from the landing 10 without entering the inside of the landing 10.
[0029]
The interphone connector 28 is connected to an interphone 31 as shown in FIG. 7 for communicating with a passenger in the car 5. In the hydraulic elevator 1 to which the present invention is applied, such an interphone connector 28 is provided on the rescue operation panel 20 installed in the hall 10, so that the worker can get on the hall 10 using the interphone 31. It is possible to communicate with the passengers in the car 5 to check the status in the car 5 and to inform the passengers in the car 5 of the work contents and the like.
[0030]
The remote control connector 29 is connected to a remote control device 32 as shown in FIG. 8 for remotely controlling the raising / lowering operation of the car 5. The remote control device 32 is provided with an up button 32a, a down button 32b, and an erroneous operation prevention button 32c. The remote control device 32 is connected to the remote control connector 29 of the rescue operation panel 20, and the erroneous operation prevention button 32c is provided. By pressing the up button 32a while pressing the button, the car 5 can be raised, and by pressing the up button 32b while pressing the erroneous operation prevention button 32c, the car 5 can be lowered. ing. In the hydraulic elevator 1 to which the present invention is applied, such a remote control connector 29 is provided on the rescue operation panel 20 installed in the landing 10, so that an operator can use the remote control device 32 to , The elevator operation of the car 5 can be remotely controlled.
[0031]
The check terminal 30 is for checking an electrical abnormality of various electric circuits incorporated in the control device 7 as described above. As shown in FIG. 9, the check terminal 30 is connected to an electric circuit such as a control circuit, a safety circuit, and a door circuit incorporated in the control device 7. In the example shown in FIG. The current and voltage of the control circuit are measured by inserting the jack of the measuring instrument into the terminal 30b, and the current and voltage of the safety circuit are measured by inserting the jack of the measuring instrument into the check terminal 30a and the check terminal 30c. The current and voltage of the door circuit are measured by inserting a jack of a measuring instrument into the terminal 30a and the check terminal 30d. Then, by judging whether the current value or the voltage value measured by these measuring instruments is a predetermined value, it is possible to check for an electrical abnormality of these electric circuits. In the hydraulic elevator 1 to which the present invention is applied, such a check terminal 30 is provided on the rescue operation panel 20 installed in the landing 10, so that the worker can be installed in the pit 21 where the control device 7 is installed. It is possible to check the electrical abnormality of various electric circuits incorporated in the control device 7 from the landing 10 without entering the hall.
[0032]
Here, in the hydraulic elevator 1 configured as described above, when the car 5 stops at a place other than the landing 10 due to a power failure, a failure, or the like, and a passenger is trapped in the car 5, The work procedure for rescuing passengers in the building will be described.
[0033]
When a passenger is trapped in the car 5, the worker first uses the check terminals 30 of the rescue operation panel 20 installed in the landing 10 to control the electric terminals of various electric circuits incorporated in the control device 7. And check the pressure of the hydraulic oil with reference to the pressure gauge 25. Then, when no abnormality is found in these and it is determined that normal operation is possible, the worker connects the interphone 31 to the interphone connector 28 of the rescue operation panel 20 and communicates with the passenger in the car 5. A call is made to check the status of the car 5 and to inform the details of the work.
[0034]
Next, the worker operates the normal / inspection switch 27 of the rescue operation panel 20 to switch the operation mode of the hydraulic elevator 1 to the inspection operation mode. Then, a remote control device 32 is connected to the remote control connector 29 of the rescue operation panel 20, and the elevator 5 is remotely operated by the remote control device 32 to move the car 5 to the nearest floor at a low speed. To move. When the car 5 has landed on the nearest floor, the worker opens the car door 9 and the hall door 11 to rescue the passengers in the car 5 to the hall 10.
[0035]
On the other hand, as a result of checking the electrical abnormalities of various electric circuits incorporated in the control device 7 using the check terminals 30 of the rescue operation panel 20, electrical abnormalities are found in these electric circuits, and the power from the power supply is detected. When it is determined that the supply is not performed normally, the operator operates the normal / stop switch 26 of the rescue operation panel 20 to completely stop the operation of the hydraulic elevator 1.
[0036]
Then, the operator operates the manual lowering valve 19 of the rescue operation panel 20 to collect a predetermined amount of hydraulic oil from the cylinder 3 a of the hydraulic jack 3 into the oil tank 15 of the hydraulic power unit 6, whereby the car 5 To the nearest lower floor. When the car 5 has landed on the nearest lower floor, the worker opens the car door 9 and the landing door 11 to rescue the passengers in the car 5 to the landing 10.
[0037]
As described above, in the hydraulic elevator 1 to which the present invention is applied, the operation of rescuing the passengers trapped in the car 5 at the time of a power failure or a failure is performed by using the rescue operation panel 20 installed at the landing 10. Such a rescue operation can be extremely performed because it is not necessary to enter the narrow pit 21 and perform the operation as conventionally performed in a hydraulic elevator of this type in the past. It can be performed simply and efficiently. Further, in the hydraulic elevator 1, there is no need to enlarge the pit 21 in consideration of the work in the pit 21, and therefore the building occupied space realized by not providing a machine room due to the enlargement of the pit 21 The problem that the advantage of space saving is lost can be avoided beforehand.
[0038]
Further, in the hydraulic elevator 1 to which the present invention is applied, since the rescue operation panel 20 provided in the landing 10 is also provided with the pressure gauge, the check terminal 30 and the like, the passengers trapped in the car 5 are rescued. Not only work, but also periodic check of hydraulic oil pressure, check of electric circuit, and the like can be easily performed at the landing 10.
[0039]
In the above description, the rescue operation panel 20 installed at the landing 10 has a manual lowering valve 19, a pressure gauge 25, a normal / stop switch 26, a normal / inspection switch 27, an interphone connector 28, and a remote control connector 29. Although specific examples have been described in which each operating means of the check terminal 30 is provided, the rescue operation panel 20 may be necessary depending on the environment in which the hydraulic elevator 1 is installed and the like. Other operation means may be added, or operation means that are deemed unnecessary according to the environment in which the hydraulic elevator 1 is installed or the like may be removed.
[0040]
In the above, an example in which the present invention is applied to an indirect hydraulic elevator is specifically described. However, the present invention is not limited to the above example. For example, the force of the hydraulic jack 3 is directly applied to the car 5. The present invention can be effectively applied to other types of hydraulic elevators such as a so-called direct hydraulic elevator.
[0041]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the hydraulic elevator which concerns on this invention, by operating the manual descending valve of the rescue operation panel installed in the landing, the car stopped by the power failure, failure, etc. can be moved to the nearest lower floor. Therefore, the work of rescuing the passengers trapped in the car can be easily and efficiently performed at the landing.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing the inside of a hoistway of a hydraulic elevator to which the present invention is applied.
FIG. 2 is a side view of the inside of the hoistway of the hydraulic elevator as viewed in the direction of arrow A in FIG.
FIG. 3 is a diagram showing a schematic configuration of a hydraulic power unit provided in the hydraulic elevator.
FIG. 4 is a front view showing a landing of the hydraulic elevator.
FIG. 5 is a front view showing a rescue operation panel installed at the landing of the hydraulic elevator, showing a state in which the inside is closed by a lid.
FIG. 6 is a front view showing a state in which a lid of the rescue operation panel is opened.
FIG. 7 is a diagram showing an intercom connected to an intercom connector of the rescue operation panel.
FIG. 8 is a view showing a remote control device connected to a remote control connector of the rescue operation panel.
FIG. 9 is a view for explaining the operation of a check terminal of the rescue operation panel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hydraulic elevator 2 Hoistway 3 Hydraulic jack 5 Riding car 6 Hydraulic power unit 7 Control device 10 Platform 19 Manual lowering valve 20 Rescue operation panel 21 Pit 25 Pressure gauge 29 Remote control connector 30 Check terminal

Claims (4)

A hydraulic jack for raising and lowering the car is erected in a hoistway, and a hydraulic power unit and a control device for supplying and recovering hydraulic oil to and from the hydraulic jack are provided in a pit at a lower portion of the hoistway. In the elevator,
A rescue operation panel having a manual descending valve for manually collecting hydraulic oil from the hydraulic jack to the power unit is provided on at least one of the landings on which the car landings. Hydraulic elevator. The hydraulic elevator according to claim 1, wherein the rescue operation panel is provided with a check terminal for detecting an electrical abnormality of the hydraulic elevator. The hydraulic elevator according to claim 1 or 2, wherein the rescue operation panel is provided with a remote control connector to which a remote control device for operating the car up and down from the landing is connected. The hydraulic elevator according to any one of claims 1 to 3, wherein the rescue operation panel is provided at a landing on the lowest floor.

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