JP5979492B2 - Opening and closing device for land and sluice using compressed gas - Google Patents

Description

  The present invention is a device that opens and closes a land sluice and sluice gate using compressed gas as a power source in an emergency such as a typhoon or tsunami.

  The land anchor or sluice gate is driven by electric power or an emergency generator in addition to human power, but in the event of an emergency, it will not be closed / open due to time constraints or disasters due to loss of power or difficulty in starting backup equipment, etc. There was much loss of life.

  There is a need for a device that automatically and quickly opens and closes the shore or sluice gates in the event of an emergency such as a tsunami, storm surge, or river increase without relying on externally supplied energy such as electric power.

  There is a need for a device for operating the land or sluice to prevent earthquakes, tsunamis caused by typhoons, etc., urban damage due to increased water, river flooding, and the like.

JP-A-11-343617 Japanese Patent Laid-Open No. 2006-9882

Conventionally, the opening and closing of the land or sluice in an emergency has been operated by a person going directly, and there have been remote operations including radio, but there have been cases where the supply of energy including the power supply is cut off and the operation is not performed.
Patent Document 1 describes a system in which a gate is lowered to some extent in an emergency such as an earthquake or tsunami, and stopped after safety is confirmed. However, when a power failure occurs, automatic operation cannot be expected with a sluice other than the one with its own weight drop type.

  Patent Document 2 describes an adjustment device by controlling the hydraulic flow rate for the speed of descent due to the weight of the gate, but it cannot be operated actively (acceleration or reverse operation).

  In the event of a disaster, it is difficult to communicate with the outside or get energy from a power outage or other infrastructure breakdown, difficult to operate quickly from the remote, and the person in charge may be at risk and sacrificed such as going to the site. There were many.

  Therefore, in the present invention, even in the event of an emergency such as a disaster, even when electricity for operating the land anchor or sluice is not supplied, the land anchor or sluice can be driven without using external electric energy. An object of the present invention is to provide an open / close device for a landlock or a sluice.

(1) That is, the present invention is provided in a compressed gas tank, a motor using a compressed gas stored in the compressed gas tank as a power source, a drive mechanism for driving a land anchor or a sluice by the motor, and the motor. A drive gear that can mesh with the motor gear and a wheel that is included in the drive mechanism and that transmits power by rotation of the drive gear, and the motor swings by an actuator that can be expanded and contracted by the compressed gas. It is possible to open and close the compressed gas and drive the land or sluice gate.

( 2 ) An operating gear that can mesh with the motor gear is provided, and the wheel is provided so as to be housed inside the land or sluice by rotation of the operating gear, and outside the land or sluice. The land / sluice gate opening and closing device according to ( 1 ), characterized in that the opening / closing device is provided so as to be capable of advancing.

( 3 ) A locking member that interlocks with the operating gear and can be locked with the levee is provided, and the locking member is locked with the levee when the wheel advances by rotation of the operating gear. The open / close device for a land anchor or sluice according to ( 2 ), wherein the switch is provided so as to be unlocked, and is provided so as to be engaged with a bank when the wheel is stored.

( 4 ) The land / sluice gate opening / closing device according to any one of ( 1 ) to ( 3 ), wherein a retreat door is provided so that a person can pass therethrough.

According to the land / sluice gate opening / closing device described in (1) above, in the event of an emergency such as a disaster, even when electricity to operate the land / sluice gate is not supplied, external electrical energy should be used. The land anchor or sluice can be driven.
Furthermore, if a device capable of releasing compressed gas by an external signal is provided at the landside or sluice, the wired or wireless remote control is performed without the operator approaching a dangerous place to operate the landside or sluice. Can do.
Further, by automating the land anchor or sluice with an emergency sensor (such as an earthquake sensor or a water level sensor), safety and labor saving can be drastically improved.
Furthermore , it can be driven by an electric motor provided separately during normal times, and can be used by switching compressed gas as a power source in an emergency.
According to the land anchor or sluice gate opening / closing device described in ( 2 ) above, the gap generated between the land anchor and the land can be reduced in a state where the land anchor or the sluice is closed. Infiltration of water can be suppressed.
According to the open / close device of the land anchor or sluice described in ( 3 ) above, the movement of the storage or advancement of the wheel and the movement of the locking member with the levee or the unlocking movement are linked to each other. The weight of the entire switchgear can be reduced, and the time for completing the predetermined movement can be shortened.
According to the land / sluice open / close device described in ( 4 ) above, even if there are people, livestock, etc. left on the water side after the land / sluice is closed, the land / sluice gate is not operated. Those who are left behind, livestock, etc. can easily evacuate to the land side, and those who are left behind can be rescued from the land side.

The perspective view which shows an example of the whole structure in the opening / closing apparatus of the land anchor or sluice of this invention. In the other example of the opening / closing device of the land anchor or sluice of this invention, the partially broken front view at the time of the electric motor EM1 action | operation which is normal time. The partial fracture top view at the time of the electric motor EM1 action | operation which is normal time in the other example of the opening / closing device of the land anchor or sluice of this invention. FIG. 7 is a partially cutaway front view showing unlocking of a locking claw CR and an operation of moving a wheel 9 when an air motor 8 is operated in an emergency in another example of a landing gear or sluice gate opening / closing device of the present invention. In another example of the landing gear or sluice gate opening and closing device of the present invention, a partially broken enlarged front view showing unlocking of the locking claw CR when the air motor 8 is in operation and the operation of the wheel 9 being advanced. . FIG. 6 is a partially cutaway side view showing unlocking of a locking claw CR and an operation of moving a wheel 9 when an air motor 8 is operated in an emergency in another example of a landing gear or sluice gate opening / closing device of the present invention. In the other example of the landing gear or the sluice gate opening and closing device of the present invention, a partially broken front view showing after the driving of the landing gear 2 by the wheels 9 when the air motor 8 is in operation. In the other example of the landing gear or sluice gate opening and closing device of the present invention, a partially broken enlarged front view showing after the driving of the landing gear 2 by the wheel 9 when the air motor 8 is in operation. (A) The partial fracture | rupture enlarged plan view which shows the latching state of the latching claw CR at the time of the air motor 8 action | operation which is an emergency in the other example of the opening / closing device of the land anchor or sluice of this invention. (B) The partially broken enlarged plan view which shows the unlocking state of the latching claw CR at the time of the air motor 8 action | operation which is an emergency in the other example of the land / sluice gate opening / closing device of this invention. The conceptual diagram regarding the flow path and control of the compressed gas of the compressed gas tank.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments relating to a land anchor or sluice switch according to the present invention will be described below in detail with reference to the accompanying drawings. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is intended to limit the invention particularly in the following description. Unless specifically stated, the present invention is not limited to this form.

Example 1
There is a land drive 2 that can be driven at the opening of the bank 1. In FIG. 1, the land anchor 2 is shown as a horizontal sliding door type, but can be adapted to a vertical gate type, a single-opening / double-opening door type, etc. by changing the mechanical actuator.

  The land ridge 2 shown in FIG. 1 is located on the right levee 1 when the gate is opened, and proceeds to the left when the gate is closed, and closes the opening of the levee 1. The land ridge 2 includes a compressed gas tank 12, an air motor 8 that is a motor that uses compressed gas stored in the compressed gas tank 12 as a power source, a water level sensor 14 that is an emergency sensor, an earthquake sensor 19, It comprises. When the water level sensor 14 or the earthquake sensor 19 detects an emergency, a signal is sent to the control panel 13 via the power supply / communication cable 17, and the direction control valve 10 that switches the direction in which the compressed gas flows is connected to the air motor 8. The compressed air is released so that the compressed gas flows, and the driving mechanism interlocked with the rotation of the air motor 8 is operated to rotate the wheel 9 to drive the land anchor 2.

  In addition, the land anchor 2 further includes a land anchor full open point detection sensor 3, a land anchor open deceleration point detection sensor 4, a land anchor closed deceleration point detection sensor 6, a land anchor full closure point detection sensor 7, etc. Various sensors for detecting driving may be provided.

  The land anchor full open detection sensor 3 placed on one end of the land anchor 2 is a means for detecting whether the land anchor 2 is closed, and when the left bank 1 is detected at the time of closing the gate, A signal is sent, the direction control valve 10 is adjusted to stop the supply of compressed gas, the rotation of the air motor 8 is stopped, the drive of the drive mechanism is stopped, and the drive of the land anchor 2 is stopped. Then, the land anchor closing deceleration point detection sensor 6 placed on the other end side of the land anchor 2 is a means for detecting that the land anchor 2 is immediately before the gate is completely closed. When it is no longer detected, a signal is sent to the control panel 13 to adjust the direction control valve 10 so as to reduce the supply amount of compressed gas, and the speed of the land ridge 2 interlocked with the rotation of the air motor 8 is reduced. By providing this land anchor closing deceleration point detection sensor 6, a large impact is applied to the land anchor 2 when the gate is closed, and various internal components are prevented from being damaged. And can be prevented from being caught between the levee 1.

  On the other hand, the land receding decelerating point detection sensor 4 placed on one end of the land anchor 2 is a means for detecting that the land anchor 2 is almost fully open, and no longer detects the left bank 1 at the time of opening. At this time, a signal is sent to the control panel 13 to adjust the direction control valve 10 so as to reduce the supply amount of the compressed gas, and to reduce the speed of the land 2 in conjunction with the rotation of the air motor 8. By providing the land-opening decelerating point detection sensor 6, it is possible to prevent a large impact from being applied to the land 2 at the time of opening and damage to various internal components. In addition, an operation command is given by a land cover opening / closing command 5 (manual / wireless remote control, etc.). The land anchor closing point detection sensor 7 placed on the other end side of the land anchor 2 is a means for detecting whether the land anchor 2 is open. When the right embankment 1 is detected at the time of opening, the control is performed. A signal is sent to the board 13 and the direction control valve 10 is adjusted to stop the supply of compressed gas, the rotation of the air motor 8 is stopped, the drive mechanism is stopped, and the land drive is stopped.

  Although the entire drive mechanism is not shown in FIG. 1, a motor gear attached to the air motor 8 by rotation of the air motor 8, a chain formed in a ring shape to be locked to the motor gear, and the chain. What is necessary is just to be able to transmit the rotational movement of the air motor 8 to the wheel 9 and to be able to rotate, such as comprising the wheel 9 to be stopped.

  The regulator 11 is attached to the compressed gas tank 12 and holds the pressure on the air motor 8 side at a predetermined constant pressure when the pressure of the compressed gas is high. The compressed gas tank 12 stores inactive pressure gas such as compressed air, compressed nitrogen, and compressed argon, and uses the compressed gas as a power source for the land anchor 2. The control panel 13 provided in the land anchor 2 is a device for controlling the driving of the land anchor 2 in sequence, the land anchor full open detection sensor 3, the land anchor open deceleration point detection sensor 4, the land anchor closed deceleration point detection. It is connected to the sensor 6, the landlock full-closed point detection sensor 7, the direction control valve 10, and the like.

  The water level sensor 14 is detection means for detecting rivers and sea water that have increased in water. The power supply device 15 supplies electricity to the control panel 13 and the directional control valve 10 when everything is controlled by gas. A combination of a primary battery, a solar battery, and a secondary battery, a commercial AC 100V power source, etc. A combination such as backup by can be used. The installation location is preferably provided with a structure such as a place that is not damaged by flooding, a watertight waterproof structure, and the like before the land 2 is driven.

  The power supply / communication cable reel 16 appropriately extends and entrains the cable as the land 2 is driven. The power supply and communication cable 17 sends power and signals necessary for the operation of the land anchor 2.

  The solar cell panel 18 supplies power to the power supply device 15 to charge the secondary battery. The earthquake sensor 19 is a detecting means for detecting an earthquake exceeding a standard such as a seismic intensity of 4, for example.

  The safety light 20 is turned on at night by a sensor for safety and monitors the soundness of the power supply 15. The siren / red rotating light 21 warns the surroundings by the siren and red rotating light when the land 2 is driven.

  Although not shown in FIG. 1, an electric motor that transmits power to the wheels 9 is provided inside the land anchor 2, and the land anchor 2 is driven by the electric motor in a normal state and is driven by the air motor 8 in an emergency.

(Example 2)
As shown in FIGS. 2 to 8, the landfill 2 includes a compressed gas tank 12, an air motor 8 that is a motor that uses compressed gas stored in the compressed gas tank 12 as a power source, and an earthquake that is an emergency sensor. And a sensor 19. When the earthquake sensor 19 detects an emergency, a signal is sent to the control panel 13 to open the direction control valve 10 for switching the flow direction of the compressed gas so that the compressed gas flows to the air motor 8. As a result, the wheel 9 is rotated by driving the driving mechanism linked to the vehicle, so that the land 2 can be driven. In the present embodiment, the emergency sensor uses the earthquake sensor 19, but is not limited thereto.

  Further, in an emergency, the air motor 8 fixed to the fixed plate 81 has an actuator A in which the compressed gas released from the compressed gas tank 12 is fixed to the fixed plate 81 at one end via the cylinder direction control valve 10A. By extending and contracting, the upper and lower sides of the fixed plate 81 can be swung left and right. When the air motor 8 swings to one side, the motor gear MG attached to the air motor 8 meshes with the operating gear WG, and when the air motor 8 swings to the other side, the motor attached to the air motor 8 The gear MG meshes with the drive gear DG. In addition, by controlling the direction in which the compressed gas flows inside the air motor 8, the motor gear MG can be rotated not only in the normal direction but also in the reverse direction.

  The operating gear WG is not normally linked to the bevel gear BG1 that is linked to the rotation of the electric motor EM2 that is operated by external power and the bevel gear BG2 that is linked to the rotation of the electric motor EM3. The power of EM2 and EM3 is not transmitted. However, in an emergency, the working gear WG causes the compressed gas released from the compressed gas tank 12 to actuate the actuator A via the cylinder direction control valve 10A and swings the fixed plate 81 to the working gear WG side. The motor gear MG attached to the motor 8 can be interlocked. At the same time, as shown in FIG. 6, the compressed gas actuates the cylinder CY1 via the cylinder direction control valve 10B and resists the biasing force of the spring located between the bevel gear BG1 and the bevel gear BG2. The operating gear WG can be interlocked with the bevel gear BG1 and the bevel gear BG2. Then, when the operating gear WG meshed with the motor gear MG rotates the bevel gear BG1, the wheel 9 attached to the substantially L-shaped wheel support member 91 screwed with the interlocking shaft S1 is It can be stored inside or can advance to the outside of the land 2. Further, when the operating gear WG meshed with the motor gear MG rotates the bevel gear BG2, a locking claw CR that is a locking member is provided at the end of the levee 1 by a member that meshes with the interlocking shaft S2. The locking receiving member 1Z can be locked, or the locking can be unlocked.

  In this emergency, by the rotation of the operating gear WG, the locking claw CR is provided to unlock the locking receiving member 1Z provided at the end of the bank 1 when the wheel 9 advances, and The locking claw CR is provided so as to be locked with the locking receiving member 1Z provided at the end of the bank 1 when the wheel 9 is stored. Further, since the joints are provided on the sides of the bevel gears BG1 and BG2 in the shafts S1 and S2, the power generated by the rotation of the operation gear WG can be transmitted even if the inclination angles of the shafts S1 and S2 change. The operating gear WG is provided with a handle H1 extending from the center thereof, and when the air motor 8 is not operated for some reason as well as the electric motors EM2 and EM3, the operating gear WG is manually operated. Can be rotated.

  The drive gear DG is engaged with a gear attached to the electric motor EM1 in a normal state, and power generated by the rotation of the electric motor EM1 that is operated by external electric power is transmitted. In an emergency, the drive gear DG is configured such that the compressed gas released from the compressed gas tank 12 swings the fixed plate 81 toward the drive gear DG via the actuator A, and the motor gear MG attached to the air motor 8. Can be engaged. A chain CH is attached to the drive gear DG, and the power generated by the rotation of the electric motor EM1 or the air motor 8 can be transmitted to the wheel 9 via the chain CH to rotate the wheel 9. The drive gear DG is provided with a handle H2 extending from the center thereof, and not only the electric motor EM1 but also the air motor 8 is not operated for some reason, the drive gear DG is manually rotated. Can be made.

  In addition, a retreat door ED provided so that a person can pass is provided on one end side of the land raft 2, and the compressed gas released from the compressed gas tank 12 in an emergency is a cylinder direction control valve 10 </ b> C. By retracting the cylinder CY2, one end of which is fixed to the lock of the retracting door ED, the lock can be released and the retracting door ED can be manually opened and closed. The expansion / contraction operation of the cylinder CY2 can be operated by a predetermined button provided in the switch group SW.

  FIG. 9A shows a state in which the locking claw CR, which is a locking member, is locked with the locking receiving member 1Z provided at the end of the levee 1 in a normal time or an emergency. ing. And in FIG.9 (b), the latching claw CR which is a latching member is the state which the latching | locking with the latching receiving member 1Z provided in the edge part of the levee 1 was unlocked in the normal time or emergency Is shown. As shown in FIG. 9 (b), when the shaft S2 rotates, the member engaged with the shaft S2 moves on the shaft S2, so that the engaging claw CR interlocked with the member moves to the base of the engaging claw CR. It can be pivoted about a shaft on the side and unlocked with the locking receiving member 1Z provided at the end of the bank 1.

  FIG. 10 is a conceptual diagram relating to the flow and control of the compressed gas in an emergency, including the components connected to the contents of the valve box VB shown in FIGS. 2, 4, and 7. The compressed gas flowing out from the compressed gas tank 12 reaches the solenoid valve SV via the regulator 11. The solenoid valve SV is controlled to release the compressed gas downstream from the control panel 13 based on information detected by the earthquake sensor 19 shown in FIG. Then, the direction control valve 10 is controlled from the control panel 13 to flow the compressed gas so as to rotate the air motor 8 in a predetermined direction. Then, the cylinder direction control valve 10A is controlled to flow compressed gas from the control panel 13 so as to operate the actuator A in a direction in which the motor gear MG meshes with the operation gear WG. Then, the cylinder direction control valve 10B resists the urging force of the spring located between the bevel gear BG1 and the bevel gear BG2, that is, the direction in which the bevel gear BG1 and the bevel gear BG2 are interlocked with the operation gear WG. The compressed gas is controlled to flow so as to operate the cylinder CY1. Thereafter, the cylinder direction control valve 10A is controlled from the control panel 13 to flow the compressed gas so as to operate the actuator A in the direction in which the motor gear MG meshes with the drive gear DG. Thus, in an emergency, the wheel 9 can advance to the outside of the land anchor 2 using compressed gas, and then the wheel 9 can be rotated and closed by the land anchor 2. Regarding the subsequent operation, the direction control valve 10 and the cylinder direction control valves 10A, 10B, and 10C are appropriately controlled from the control panel 13. Further, a throttle valve shown in the figure can be attached to the flow path connected to the direction control valve 10. 2, 4, and 7, the solenoid valve SV, the direction control valve 10, and the cylinder direction control valves 10 </ b> A, 10 </ b> B, and 10 </ b> C can be accommodated in the box-shaped valve box VB. You don't have to.

  In the present embodiment, a siren / red rotating lamp 21 is provided on the upper surface of the land anchor 2. Further, although not shown, the land anchor full open point detection sensor 3, the land anchor open deceleration point detection sensor 4, the land anchor closed deceleration point detection sensor 6, and the land anchor full closure point detection sensor 7 described in the first embodiment are included in the control panel. 13 is preferably connected.

Next, the usage method of a present Example is demonstrated.
First, in a normal time when external electric energy can be used, the motor gear MG attached to the air motor 8 does not mesh with the operation gear WG and the drive gear DG, and the wheel 9 is landed by the electric motor EM2. The vehicle advances to the outside of the anchor 2 and then the wheel 9 is rotated by the electric motor EM1 and closed by the land anchor 2. Further, as shown in FIG. 1 and FIG. 2, the wheel 9 is housed in the land anchor 2 by the electric motor EM2, and the locking claw CR is provided at the end of the levee 1 by the electric motor EM3. Locks with the receiving member 1Z. In this normal time, the control panel 13 appropriately controls the electric motors EM1, EM2, and EM3 by pressing a button of the switch group SW or by a wired or wireless remote operation using a personal computer, a mobile phone, or the like. can do.

  In an emergency where electric energy from the outside cannot be used, if an earthquake occurs with the land 2 being vacant, control is performed based on the shaking information detected by the earthquake sensor 19 shown in FIG. The solenoid valve SV is controlled so as to release the compressed gas from the panel 13 to the downstream side. As shown in FIGS. 4 and 5, the air motor 8 rotates in a predetermined direction via the direction control valve 10, and further, the actuator A is operated via the cylinder direction control valve 10A to fix the fixed plate. The motor gear MG attached to the air motor 8 is meshed with the operating gear WG. Then, as shown in FIG. 6, the cylinder CY1 is operated via the cylinder direction control valve 10B, and the bevel gear BG1 and the bevel gear BG2 are interlocked with the operation gear WG. In this way, the power generated by the rotation of the air motor 8 is transmitted to the motor gear MG, the working gear WG, the bevel gear BG1, the bevel gear BG2, the shaft S1, and the shaft S2, and the wheel 9 advances outside the land cage 2. The locking claw CR moves in the direction to unlock. In order to operate the solenoid valve SV, the direction control valve 10, and the cylinder direction control valves 10A, 10B, and 10C, a power supply device 15 (not shown) is housed in the land.

  Then, as shown in FIGS. 7 and 8, the actuator A is operated via the cylinder direction control valve 10 </ b> A, and the fixed plate 81 is swung to the drive gear DG side and attached to the air motor 8. Motor gear MG is meshed with drive gear DG. In this way, the power generated by the rotation of the air motor 8 is transmitted to the motor gear MG, the drive gear DG, and the chain CH, and the wheels 9 can be rotated and closed by the land anchor 2.

  After that, the actuator A is actuated via the cylinder direction control valve 10A, the fixed plate 81 is swung to the working gear WG side, and the motor gear MG attached to the air motor 8 meshes with the working gear WG. Be done. Then, from the state shown in FIGS. 7 and 8, the directional control valve 10 is switched to rotate the air motor 8 in the reverse direction, and the power generated by the rotation of the air motor 8 is the motor gear MG, the operating gear WG, the bevel gear BG1, the umbrella It is transmitted to the gear BG2, the shaft S1, and the shaft S2, the wheel 9 is housed inside the land anchor 2, and the locking claw CR moves in a direction to lock the locking receiving member 1Z provided at the end of the levee 1. . Thus, even when electric energy from the outside can no longer be used, by using the compressed gas in the compressed gas tank 12, it can be closed by the land anchor 2. On the contrary, when opening with the land anchor 2, by pressing a predetermined button of the switch group SW, an operation reverse to that when closing with the land anchor 2 is performed, and the opening is driven.

DESCRIPTION OF SYMBOLS 1 ... Embankment 2 ... Land anchor 3 ... Land anchor full opening detection sensor 4 ... Land anchor opening deceleration point detection sensor 5 ... Land anchor opening / closing command (manual / wireless remote etc.)
6 ... Landlock closed deceleration point detection sensor 7 ... Landlock fully closed point detection sensor 8 ... Air motor 9 ... Wheel 10 ... Direction control valve 11 ... Regulator 12 ... Compressed gas tank 13 · · Control panel 14 · · Water level sensor 15 · · Power supply device 16 · · Power supply · Communication cable reel 17 · · Power supply · Communication cable 18 · · Photovoltaic panel 19 · · Earthquake sensor 20 · · Security light 21 · · Siren · Red rotating lamp 81 · · Fixed plate 91 · · Wheel support A · · · actuator MG · · motor gear DG · · drive gears H1 and H2 · · · handle WG · · operating gears EM1, EM2, EM3 ·・ Electric motors BG1, BG2 ・ ・ Bevel gears S1 and S2 ・ ・ Shaft CR ・ ・ Locking claw CH ・ ・ Chain ED ・ ・ Retracting doors CY1, CY2 ・ ・ ・ Cylinder

Claims (4)

A compressed gas tank, a motor that uses compressed gas stored in the compressed gas tank as a power source, a drive mechanism that drives the land or sluice by the motor, and a drive that can mesh with a motor gear provided in the motor A gear, and a wheel included in the drive mechanism, to which power is transmitted by rotation of the drive gear ,
The motor is swingable by an actuator that can be expanded and contracted by the compressed gas;
An open / close device for a land anchor or a sluice, wherein the compressed gas is released to drive the land anchor or a sluice. Comprising an operating gear meshable with the motor gear;
2. The wheel according to claim 1, wherein the wheel is provided so as to be housed inside a land anchor or a sluice by rotation of the operating gear, and is provided so as to be able to advance outside the land anchor or the sluice. Terrestrial or sluice gate opening and closing device. Interlocking with the operating gear, comprising a locking member that can be locked with the levee;
The locking member is provided so as to be unlocked from the embankment when the wheel is advanced by rotation of the operation gear, and to be engaged with the embankment when the wheel is stored. The opening / closing device for a land anchor or a sluice according to claim 2. The open / close device for a land anchor or a sluice according to any one of claims 1 to 3, wherein a retreat door is provided so that a person can pass therethrough.

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