JP6666382B2 - Water gate switchgear - Google Patents

Description

  The present invention relates to a water gate opening / closing device that opens / closes a water gate and lowers a door body by its own weight.

  Usually, in order to open and close the water gate, the door is moved up and down by driving an electric motor connected to the door in the opening and closing direction. In addition, conventionally, a water gate opening / closing device in which a pair of electric motors connected to the door body are independently arranged on both sides in the width direction of the door body is employed. In this sluice gate opening and closing device, a pair of electric motors (such as an electric motor and a hydraulic cylinder whose power source is an electric motor) are arranged independently on both sides in the width direction of the door body. A situation where the width direction of the door body is inclined with respect to the width direction of the floodgate during the elevating may occur. In order to correct this inclination posture, in the conventional water gate opening / closing device, the drive of the electric motor connected to one end in the width direction of the door body that is moving up and down in advance is turned on and off (in the case of a hydraulic cylinder, the hydraulic cylinder By turning on / off the hydraulic oil to the right side, the inclination posture is corrected without hindering the elevating operation.

  In addition, when a large-scale disaster occurs, for example, when a tsunami occurs due to a storm surge, a local heavy rain, a flood, or an earthquake, it is necessary to quickly close the floodgate with a door. Therefore, in the conventional floodgate opening and closing device, in order to quickly close the floodgate, i.e., to shorten the time of closing the floodgate, the lowering speed of the floodgate is relatively increased by using the weight of the floodgate to close the floodgate. Is configured. In such a water gate opening / closing device, a self-weight drop braking device that adjusts the self-weight descent speed to an appropriate speed with respect to the self-weight descent of the door body is attached to each of the pair of electric motors. When the door body is lowered by its own weight, the width direction of the door body is inclined with respect to the width direction of the water gate during the descent of its own weight by the operation of the pair of weight descent braking devices (assisted by the electric motor). A situation may occur. In this case, as in the case of the water gate opening / closing device, the drive of the motor connected to one end in the width direction of the door body that has previously dropped by its own weight is turned ON / OFF. In addition, the inclination posture is corrected without hindering the elevating operation (see Patent Document 1).

Japanese Patent No. 5936589

  However, in the conventional floodgate opening and closing device, when a three-phase power supply (power supply) is lost in a disaster or the like, the electric motor cannot be driven, and it is difficult to even move the door up and down. Further, in the conventional floodgate opening / closing device, when the three-phase power supply (power supply) is lost, the motor cannot be driven, so that the door body can be maintained in an equilibrium state when the door body is moved up and down. However, there is a possibility that a serious problem may occur. Therefore, even when the three-phase power supply is lost, the door body can be raised and lowered as usual even when the door body is moving up and down and the width direction of the door body is inclined with respect to the width direction of the floodgate. It was necessary to smoothly (smoothly) correct the inclined posture during the ascent and descent (including the own weight descent).

  The present invention has been made in view of such a point, and provides a water gate opening / closing device that can stably move up and down while maintaining the equilibrium state of the door body even when the three-phase power supply is lost. Aim.

(Aspect of the invention)
The aspects of the invention described below exemplify the configuration of the present invention, and are described separately in order to facilitate understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and, while taking into consideration the best mode for carrying out the invention, partially replaces, deletes, or deletes some of the components of each section. The components added with the above components are also included in the technical scope of the present invention.

(1) When opening and closing the water gate, a rotating shaft that rotates as the door body moves up and down, a differential device having an output shaft connected to the rotating shaft, and a first input shaft of the differential device. An electric motor, connected to a second input shaft of the differential device, when power to the electric motor is lost, by controlling the supply of hydraulic fluid to control the rotation of the second input shaft, A hydraulic elevating device that raises and lowers the door body by adjusting its elevating speed, a hydraulic supply device that supplies hydraulic fluid to the hydraulic elevating device, and an engine that is provided as a power source of the hydraulic pressure supply device, A pair of opening and closing device bodies each having an independent arrangement are disposed independently on both sides in the width direction of the door body, and when the power to the electric motor is lost , the width direction of the door body is changed during the raising and lowering of the door body. When it is inclined with respect to the width direction, the supply amount of hydraulic fluid in each of the hydraulic pressure raising / lowering devices is controlled. To (corresponding to the invention of claim 1) the inclined posture sluice switchgear, characterized in that it comprises a control device for correcting a.
In the gate opening / closing device described in (1), even if the three-phase power supply is lost in a disaster or the like, each hydraulic pressure supply device can be driven by the engine. The body can be raised and lowered as usual by adjusting the lifting speed as appropriate. In addition, when the door body is raised and lowered by each hydraulic elevating device and the width direction of the door body is inclined with respect to the width direction of the water gate, the control device controls the supply amount of the hydraulic fluid in each hydraulic elevating device. By performing the control, the inclination posture can be corrected while continuing the elevating operation of the door body. As a result, even when the three-phase power supply is lost, it is possible to smoothly (smoothly) reduce the lifting speed at one end in the width direction of the door body that has been previously raised and lowered, and as a result, the door body can be raised and lowered. Even during the course, the door body can be smoothly corrected from the inclined posture to the normal posture.

(2) The water gate opening / closing device according to the above mode (1), wherein the hydraulic pressure lifting device lowers the door body by its own weight by rotating the second input shaft accompanying the lowering of the door body by its own weight . A water gate opening / closing device (corresponding to the invention of claim 2), which has a function as a hydraulic braking device that controls a discharge amount of the generated hydraulic fluid to adjust a lowering speed of the door body under its own weight.
In the sluice gate opening / closing device described in (2), since the hydraulic lifting device has a function as a hydraulic braking device, the opening / closing device main body can be made compact.

  ADVANTAGE OF THE INVENTION According to the floodgate opening / closing apparatus of this invention, even if a three-phase power supply is lost, a door body can be raised / lowered stably, maintaining the equilibrium state.

Drawing 1 is a mimetic diagram of a floodgate opening and closing device concerning an embodiment of the present invention. FIG. 2 is a hydraulic circuit diagram of a hydraulic circuit unit of the hydraulic lifting device employed in the water gate opening / closing device according to the embodiment of the present invention. FIG. 3 is a diagram showing a first control flow of the control device employed in the water gate opening / closing device according to the embodiment of the present invention. FIG. 4 is a diagram showing a second control flow of the control device employed in the water gate opening / closing device according to the embodiment of the present invention.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1, in a water gate opening / closing device 1 according to an embodiment of the present invention, a pair of opening / closing device main bodies 15, 15 described later are independently arranged on both sides in the width direction of the door body 3. In the floodgate opening and closing device 1 according to the present embodiment, the door 3 can be moved up and down without any trouble even when the three-phase power supply is lost in a disaster or the like. In this case, even when the width direction of the door body 3 is inclined with respect to the width direction of the water gate 2, the inclination posture can be corrected smoothly while continuing to move up and down the door body 3.

  Hereinafter, the water gate opening and closing device 1 according to the present embodiment will be described in detail. As shown in FIG. 1, a sluice gate opening / closing device 1 according to the present embodiment supports a door body 3 between a pair of left and right gate posts 5, 5 constituting a sluice 2 so as to be able to move up and down. A pair of right and left sheaves 6 and 6 are arranged on the upper part of the door body 3. Wire rope winding drums 7, 7 are arranged above a pair of left and right gate posts 5, 5, respectively. Independent wire ropes 10, 10 are wound around the sheaves 6, 6, respectively. One of the wire ropes 10 is wound around the corresponding sheave 6, one end of the wire rope 10 is locked on the upper end of one of the portal posts 10, and the other end is wound around the corresponding wire rope winding drum 7. I have. Similarly, the other wire rope 10 is wound around the corresponding sheave 6, one end of the wire rope 10 is locked to the upper end of the other portal 10, and the other end of the wire rope 10 is connected to the corresponding wire rope. It is wound around a winding drum 7.

  In the sluice gate opening and closing device 1 according to the present embodiment, as described above, the opening and closing device main bodies 15 and 15 are independently arranged in a pair on both sides in the width direction of the door body 3. The opening / closing device main body 15 has a rotating shaft 17 integrally connected to the corresponding wire rope winding drum 7, and a differential device 19 having an output shaft 18 for transmitting rotational torque between the rotating shaft 17 and the rotating shaft 17. An electric motor (main power) 23 connected to the first input shaft 21 of the differential device 19; first brake means 25 for releasing or restraining the rotational motion of the first input shaft 21; A hydraulic elevating device (preliminary power) 27 as a hydraulic elevating device that adjusts the elevating speed of the door body 3 by controlling the supply amount of the hydraulic oil and connected to the second input shaft 22; A second brake means 26 for releasing or restraining the second input shaft 22, an opening deviation meter 75 for detecting an inclination posture of the door body 3 with respect to the width direction of the water gate 2, and a door body for each hydraulic elevating device 27. 3, the width of the door 3 is the same as the width of the gate 2 If inclined, by controlling the supply amount of hydraulic oil in the hydraulic lifting device 27, and a control unit 76 to correct the inclined position, the relative. In the present embodiment, the control devices 76 of the switchgear main bodies 15 are connected to each other by wireless communication. However, the present invention is not limited thereto, and the control devices 76, 76 of the switching device main bodies 15, 15 may be connected to each other by wired communication.

  A spur gear 17a is integrally connected to the rotating shaft 17. A spur gear 18a is also integrally connected to the output shaft 18 extending from the differential device 19. The spur gear 17a of the rotating shaft 17 and the spur gear 18a of the output shaft 18 mesh with each other, and the rotating shaft 17 and the output shaft 18 are configured to mutually transmit rotational torque. A motor 23 is connected to the first input shaft 21 of the differential device 19. The electric motor 23 is driven by a three-phase power supply (power supply). The electric motor 23 is connected to the operation panel 78 for transmitting a signal from the operation panel 78. The driving of the electric motor 23 rotates the first input shaft 21. The first input shaft 21 is provided with first brake means 25 between the differential 19 and the electric motor 23. The first brake means 25 is for restraining and releasing the rotational movement of the first input shaft 21. As the first brake means 25, a hydraulic lifting brake, an electromagnetic brake, a disk brake, or the like is employed. The first brake means 25 is operated by a three-phase power supply or a single-phase power supply. The first brake means 25 is connected to the operation panel 78 for transmitting a signal from the operation panel 78. The operation panel 78 operates with a single-phase power supply or a DC power supply.

  Further, the second input shaft 22 of the differential 19 is connected to the hydraulic motor 30 of the hydraulic elevating device 27. The second input shaft 22 is provided with a second brake means 26 between the differential device 19 and the hydraulic elevating device 27. The second brake means 26 is for restraining and releasing the rotational movement of the second input shaft 22. As the second brake means 26, similarly to the first brake means 25, a hydraulic lifting brake, an electromagnetic brake, a disk brake, or the like is employed. The second brake means 26 is operated by a single-phase power supply or a DC power supply. The second brake means 26 is connected to the control device 76 for transmitting a signal from the control device 76. In the present embodiment, the wire rope 10 and the wire rope winding drum 7 are employed, but a chain and a sprocket may be employed.

  As shown in FIGS. 1 and 2, the hydraulic elevating device 27 communicates with the hydraulic motor 30 and communication paths 34 and 35 of the hydraulic motor 30 to adjust the supply amount of hydraulic oil to the hydraulic motor 30. And a unit 31. The second input shaft 22 of the differential 19 is connected to the shaft of the hydraulic motor 30. In the hydraulic circuit unit 31, a suction path 41 and a discharge path 42 of a hydraulic pump 40 that supplies hydraulic oil are connected to a pipe 38 thereof. The hydraulic pump 40 corresponds to a hydraulic pressure supply device as a hydraulic pressure supply device. The rotating shaft of an engine 45, which is a power source, is connected to the shaft of the hydraulic pump 40. Then, the hydraulic pump 40 is driven by the driving of the engine 45. The engine 45 is connected to the control device 76 for transmitting a signal from the control device 76.

  As can be seen from FIG. 2, a relief valve 48, first to sixth electromagnetic switching valves 51 to 56, a counter balance valve 59, a first to sixth flow regulating valves (check valves) are provided in the pipeline 38 of the hydraulic circuit unit 31. ), Check valves 68, 68, brake valve 70, pressure reducing valve 71, return filter 72, and suction filter 73. As the hydraulic pump 40 is driven by the engine 45 as a power source, the hydraulic circuit unit 31 supplies the hydraulic fluid from the discharge path 42 of the hydraulic pump 40 to the pipeline 38, that is, the first and second hydraulic pumps when the door 3 rises. The flow control valves 61, 62, when descending, pass through the third and fourth flow control valves 63, 64, whereby the supply amount to the hydraulic motor 30 is adjusted to reach the hydraulic motor 30 and discharged from the hydraulic motor 30. The hydraulic oil returns to the oil tank 39 through the pipe 38, and the hydraulic oil from the oil tank 39 is sucked into the suction path 41 of the hydraulic pump 40 through the pipe 38. The hydraulic circuit unit 31 is connected to the control device 76 for transmitting a signal from the control device 76. The hydraulic circuit unit 31 operates with a single-phase power supply or a DC power supply.

  The opening deviation meter 75 indicates that the open area of the floodgate 2 is deviated right or left, that is, the door body 3 is not maintained in an equilibrium state, and the width direction of the door body 3 is in the width direction of the floodgate 2. This is to detect a state of inclination. The opening deviation meter 75 is connected to the corresponding control device 76 for signal transmission to the corresponding control device 76. The opening deviation meter 75 and the control device 76 are connected by wired communication. Then, the opening degree deviation meter 75 measures the phase of the rotating shaft 17 of the switching device main body 15 and transmits the measurement result to the corresponding control device 76. Then, based on the phases of the rotating shafts 17 of the switchgear main bodies 15, 15 shared by the respective control devices 76, 76, the phase difference between the rotating shafts 17, 17 is calculated. Calculate the tilt posture. The opening deviation meter 75 is operated by a single-phase power supply or a DC power supply.

  Although substantially the same, the difference between the rotation speeds of the rotation shafts 17 of the switchgear bodies 15 may be measured to calculate the inclination posture of the door 3. When the three-phase power supply is lost in a disaster or the like, the control device 76 controls the raising and lowering operation of the door body 3 when the door body 3 is moved up and down by the hydraulic elevating device 27. Is controlled by the hydraulic braking device 27 to be described later when the door body 3 is lowered. As described above, the control devices 76 are connected to each other by wireless communication. The control device 76 is connected to a control panel 78 for signal transmission. The control device 76 is operated by a single-phase power supply or a DC power supply. The detailed control flow of the control device 76 will be described below.

Next, an opening / closing control method using the water gate opening / closing device 1 according to the present embodiment will be described.
First, in the floodgate opening / closing device 1, based on FIG. 3, a detailed description will be given of an opening / closing control method for raising and lowering the door body 3 when three-phase power is lost in a disaster or the like with reference to FIGS. Will be described. In a state where the three-phase power supply is lost, the electric motor 23 does not function, and thus the hydraulic elevating device 27 as a reserve power is operated by the hydraulic pump 40 and the engine 45. Note that even when the three-phase power supply is lost, the operation panel 78, the control device 76, the second brake means 26, the hydraulic elevating device 27 (the hydraulic circuit unit 31), and the opening degree deviation meter 75 are connected to the uninterruptible power supply or the small-sized It can be operated with a single-phase power source of a portable generator, a DC power source of a battery, or a power source generated by a dynamo driven by the engine 45. At the time of raising / lowering operation of the door body 3 by the hydraulic lifting / lowering device 27, the fourth electromagnetic switching valve 54 of the hydraulic circuit unit 31 of each opening / closing device main body 15 is operated to be closed.

Then, referring to FIG. 3, in step S <b> 1, the operator performs a switch operation for starting the engine on operation panel 78. Then, the signal is transmitted from the operation panel 78 to the engines 45, 45 via the control devices 76, 76 of the switchgear main bodies 15, 15, and the engines 45, 45 are started. In addition, you may start by the recoil starter of each engine 45. Subsequently, in step S2, an unload valve (not shown) is opened by a signal from the control device 76 of each opening / closing device main body 15, and hydraulic oil is discharged from the discharge path 42 of the hydraulic pump 40 to the hydraulic circuit unit 31. The liquid is discharged into the pipe 38. Subsequently, in step S3, the control device 76 of each opening / closing device body 15 outputs the discharge path 42 of the hydraulic pump 40 based on the detection result of a hydraulic pressure sensor (not shown) for detecting the oil pressure in the pipeline 38. To the first electromagnetic switching valve 51 and the sixth electromagnetic switching valve 56, it is confirmed that the inside of the pipeline 38 has reached a predetermined oil pressure value. Subsequently, in step S4, the sixth electromagnetic switching valve 56 of the hydraulic circuit unit 31 is operated in an open state (direction toward the hydraulic motor 30) by a signal from the control device 76 of each switching device main body 15, The hydraulic pressure from the discharge path 42 of the hydraulic pump 40 is applied as a predetermined boost pressure to the hydraulic motor 30 while being reduced by the pressure reducing valve 71. Thereafter, the controller 76 confirms that a predetermined boost pressure has been applied to the hydraulic motor 30 by a hydraulic pressure sensor or the like.

  Subsequently, in step S5, the operator operates the lifting switch, here the lifting switch, on the operation panel 78. Subsequently, in step S6, the first electromagnetic switching valve 51 of the hydraulic circuit unit 31 is opened (when the door 3 is opened) by a signal from the control device 76 of each opening / closing device main body 15 based on the operator's operation of the ascent switch. (Upward direction). Subsequently, in step S7, the second brake means 26 is released by a signal from the control device 76 of each switching device body 15, and the rotational motion of the second input shaft 22 is released. Then, in step S8, the door body 3 is adjusted to an appropriate ascending speed by the operation of the hydraulic elevating device 27 of each opening / closing device main body 15, and moves up.

  That is, in step S8, the hydraulic oil discharged from the discharge path 42 of the hydraulic pump 40 passes through the first and second flow rate adjustment valves 61 and 62 (the second electromagnetic switching valve 52 is in an open state) and passes through the communication path 34. The flow reaches the hydraulic motor 30 via the communication path 35, and returns to the oil tank 39 through the check valves of the third and fourth flow control valves 63 and 64 (the third electromagnetic switching valve 53 is in an open state). Then, the supply amount of the hydraulic oil to the hydraulic motor 30 is controlled by passing the hydraulic oil through the first and second flow control valves 61 and 62 (the third and fourth flow control valves 63 and 64 at the time of descent). Then, the door body 3 is adjusted to an appropriate ascending speed and raised. When the opening / closing speed of the floodgate 2 is increased / decreased, that is, when the elevating speed of the door body 3 is increased / decreased, the first and second flow rate adjusting valves are used at the time of ascending according to a signal from the control device 76 of each opening / closing device main body 15. By controlling the opening of the third and fourth flow control valves 63 and 64 at the time of opening and lowering of the opening 61 and 62, the speed at which the door 3 moves up and down can be increased or decreased. Further, while the door body 3 is descending, the opening speed of the third and fourth flow control valves 63 and 64 is controlled by the height of the door body 3 from the landing surface, so that the descending speed is appropriately changed. Can also.

  When the door body 3 is being raised at an appropriate speed by the respective hydraulic elevating devices 27, the phases of the rotating shafts 17, 17 of the respective opening / closing device main bodies 15, 15 are always maintained by the respective opening degree deviation meters 75, 75. The measurement is performed, the measurement result is transmitted to each of the control devices 76, 76, and the measurement result is shared by the control devices 76, 76. Subsequently, in step S9, the controller 76 of each switchgear main body 15 sets the phase difference between the rotation axes 17, 17 of each switchgear main body 15, 15 based on the measurement result from each opening deviation meter 75 as the reference value. Is exceeded, it is determined that the inclination correction of the door body 3 is necessary, and the process proceeds to step S10. On the other hand, in step S9, the controller 76 of each switchgear main body 15 sets the reference value to the phase difference between the rotating shafts 17, 17 of each switchgear main body 15, 15 based on the measurement result from each opening degree deviation meter 75. If not, it is determined that the inclination correction of the door 3 is not necessary, and the process proceeds to step S14.

  In step S <b> 14, the door 3 moves up at an appropriate ascending speed by the operation of the hydraulic elevating device 27 of each opening / closing device main body 15 to reach the upper limit position. Subsequently, in step S15, based on a detection signal of a detection sensor (not shown) that detects that the door body 3 has reached the upper limit position, a hydraulic circuit unit is provided by a signal from the control device 76 of each opening / closing device main body 15. The first electromagnetic switching valve 31 is operated in a closed state. Thereby, the supply amount of the hydraulic oil to the hydraulic motor 30 becomes substantially zero, and the door body 3 stops as the hydraulic motor 30 stops. During this stop, the brake valve 70 of the hydraulic circuit unit 31 is temporarily opened to reduce the impact on the communication paths 34 and 35 and the hydraulic motor 30, and the hydraulic pressure in the hydraulic motor 30 is reduced by the oil tank 39. I try to escape to. Naturally, in step S14, the operator can intentionally operate the stop switch of the operation panel 78 or the like, and the process can proceed to step S15.

  Subsequently, in step S16, the second brake means 26 is operated by a signal from the control device 76 of each switching device main body 15, and the rotational movement of the second input shaft 22 is restricted. Subsequently, in step S17, the lifting operation of the door body 3 is completely stopped. Subsequently, in step S18, the sixth electromagnetic switching valve 56 of the hydraulic circuit unit 31 is operated in the open state (the direction in which the hydraulic oil is directed to the oil tank 39) by a signal from the control device 76 of each switching device main body 15. Then, the boost pressure in the hydraulic motor 30 is released into the oil tank 39. Subsequently, in step S19, the unload valve is operated to be closed by the signal from the control signal 76 of each switching device main body 15, and the hydraulic oil is supplied from the hydraulic pump 40 to the pipeline 38 of the hydraulic circuit unit 31. Discharge is shut off. Finally, in step S20, the operation of the engine 45 is stopped by a signal from the control device 76 of each switching device main body 15.

  On the other hand, in step S10, the second electromagnetic switching valve 52 of the hydraulic circuit unit 31 is controlled by a signal from the control device 76 of the opening / closing device main body 15 connected to the one end portion of the door body 3 that has risen earlier in the width direction. (When descending, the third electromagnetic switching valve 53) is operated in the closed state to shut off the flow of the hydraulic oil to the first flow control valve 61 (when descending). At this time, the rotation speed of the engine 45 of each switchgear main body 15 does not change, and as a result, the discharge amount of hydraulic oil from the hydraulic pump 40 does not change. As a result, the supply amount supplied to the hydraulic motor 30 decreases, and in step S11, the rising speed of the one end portion of the door body 3 that has risen earlier in the width direction decreases. Subsequently, in step S12, the control device 76 of each opening / closing device main body 15 determines whether or not the inclination correction of the door 3 has been completed based on the measurement result from the opening degree deviation meter 75. As a result, if it is determined in step S12 that the tilting posture of the door 3 has not been corrected by the control device 76 of each opening / closing device main body 15, the process returns to before step S12.

  On the other hand, if it is determined in step S12 that the control device 76 of each opening / closing device main body 15 has corrected the inclination posture of the door body 3, the process proceeds to step S13. Subsequently, in step S13, the signal from the control device 76 of the switchgear body 15 connected to one end in the width direction of the door body 3, which has been raised earlier, is again turned on and off by the switchgear body 15 (the hydraulic elevating device 27). ), The second electromagnetic switching valve 52 (the third electromagnetic switching valve 53 at the time of descending) of the hydraulic circuit unit 31 is operated to be in an open state, and the first flow regulating valve 61 (the third flow regulating valve 63 at the time of descending) is actuated. Resume oil flow. As a result, the amount of supply supplied to the hydraulic motor 30 increases, so that the door 3 rises again at an appropriate rising speed. Thereafter, the process returns to the step before step S9.

  In step S10, the first and second flow rates of the hydraulic circuit unit 31 are determined by a signal from the control device 76 of the opening / closing device body 15 connected to one of the widthwise ends of the door body 3 that has risen earlier. The opening of the regulating valves 61 and 62 (the third and fourth flow regulating valves 63 and 64 at the time of descent) is reduced (the second and third electromagnetic switching valves 52 and 53 remain open) and supplied to the hydraulic pump 30. In step S11, the rising speed of the one end portion in the width direction of the door body 3, which is rising earlier, can be suppressed. In step S10, the first electromagnetic switching valve 51 of the hydraulic circuit unit 31 is operated by a signal from the control device 76 of the opening / closing device main body 15 connected to the one end of the door body 3 that has risen earlier in the width direction. In the closed state to shut off the flow of the operating oil to the first and second flow control valves 61 and 62 (when descending), the hydraulic motor 30 It is also possible to make the supplied amount substantially zero, and to stop one end in the width direction of the door body 3 that has been rising earlier in step S11.

  Switching of the first and second solenoid-operated switching valves 51 and 52 (first and third solenoid-operated switching valves 51 and 53 when descending) for controlling the supply amount of the hydraulic oil to the hydraulic motor 30, The degree of opening of the second flow control valves 61 and 62 (the third and fourth flow control valves 63 and 64 at the time of descent) is required for the degree (size) of the inclination posture of the door 3 and the inclination correction. It can be appropriately selected depending on conditions such as time. The amount of discharge from the hydraulic pump 40 is varied (controlled) (the number of revolutions of the engine 45 is varied (controlled), or the amount of discharge is varied (controlled) by the hydraulic pump 40), and the operation to the hydraulic motor 30 is performed. The amount of oil supply can also be controlled.

  As described above, when the width direction of the door body 3 is inclined with respect to the width direction of the floodgate 2 during the lifting and lowering of the door body 3 by the hydraulic lifting / lowering device 27 of each opening / closing apparatus main body 15, By controlling the supply amount of the hydraulic oil to the hydraulic motor 30 of each hydraulic elevating device 27 without changing the rotation speed of each engine 45 by the signal from 76, the inclination posture can be corrected. As a result, it is possible to smoothly reduce the lifting speed of the one end portion in the width direction of the door body 3 that has been previously raised and lowered, and to move the door body 3 from its inclined posture to the normal posture while continuing the lifting / lowering operation. Can be corrected smoothly.

  By the way, in the water gate opening / closing device 1 according to the present embodiment, when the water gate 2 is normally opened / closed, the first brake means 25 is released and only the rotational movement of the first input shaft 21 is released by a signal from the operation panel 78. To release. The doors 3 are moved up and down by driving the electric motors 23 in the opening and closing directions according to signals from the operation panel 78. Further, when the door body 3 is moved up and down, the control device 76 determines that the width direction of the door body 3 is inclined with respect to the width direction of the floodgate 2 based on the measurement result from each opening degree deviation meter 75. In this case, the motor 23 of the opening / closing device main body 15 connected to one end in the width direction of the door body 3 that has been previously moved up and down is turned on / off by a signal from the operation panel 78, and the door body 3 Is corrected for inclination.

  Next, in the sluice gate opening / closing apparatus 1 according to the present embodiment, an opening / closing control method for lowering the door body 3 by its own weight when the three-phase power supply is lost in a disaster or the like based on FIG. This will be described in detail with reference to FIG. When the door 3 is lowered by its own weight, the above-described hydraulic elevating device 27 (the hydraulic motor 30 and the hydraulic circuit unit 31) is used as a hydraulic braking device as a hydraulic braking device that adjusts the speed of its own weight descent of the door 3 to an appropriate speed. It functions as the device 27 (the hydraulic pump 30 and the hydraulic circuit unit 31). When the three-phase power supply is lost in a disaster or the like, the electric motor 23 does not function, and the operation panel 78, the control device 76, the second brake means 26, the hydraulic braking device 27 (the hydraulic circuit unit 31), and the opening deviation The total 75 can be operated by an uninterruptible power supply, a single-phase power supply of a small portable generator, a DC power supply of a battery, or a power supply generated by a dynamo driven by the engine 45. When the weight of the door body 3 falls, the first electromagnetic switching valve 51 is closed and the fifth electromagnetic switching valve 55 is opened in the hydraulic circuit unit 31 of each switching device body 15.

  Referring to FIG. 4, in step S <b> 31, the operator performs an operation of lowering the weight of the door body 3 using the operation panel 78, and the like. Then, this signal is transmitted to the control devices 76, 76 of the respective opening / closing device main bodies 15, 15, and the lowering of the weight of the door 3 is started. Subsequently, in step S32, in the hydraulic circuit unit 31 of each switchgear main body 15, the fourth electromagnetic switching valve 54 is operated in an open state by a signal from the controller 76 of each switchgear main body 15. Subsequently, in step S33, the second brake means 26 of each switching device main body 15 is released by a signal from the control device 76 of each switching device main body 15, and the rotational motion of the second input shaft 22 is released. On the other hand, the first input shaft 21 cannot rotate because the motor 23 does not function due to the loss of power. Then, in step S34, the door body 3 descends by its own weight at an appropriate descending speed by the operation of the hydraulic braking device 27 of each opening / closing device main body 15.

  That is, in step S34, the rotating shaft 17 of each switchgear main body 15 rotates and the second input shaft 22 of the differential gear 19 rotates with the lowering of the weight of the door body 3. Hydraulic oil discharged from the hydraulic pump 30 of each hydraulic braking device 27 via the communication path (discharge path) 34 along with the rotational movement of the second input shaft 22 is transmitted to the hydraulic circuit unit 31 by the fifth and sixth hydraulic fluids. The fluid passes through the flow control valves 65 and 66 (the fourth and fifth electromagnetic switching valves 54 and 55 are open) and is sucked into the hydraulic pump 30 via the communication path (suction path) 35. In this way, when the door body 3 descends under its own weight, the hydraulic oil from the hydraulic pump 30 circulates in the closed circuit.

  Then, the hydraulic oil discharged from the hydraulic pump 30 of the hydraulic braking device 27 of each switching device body 15 passes through the fifth and sixth flow control valves 65 and 66 of the hydraulic circuit unit 31, and Is controlled, and the door body 3 is lowered under its own weight after the speed at which the door body 3 descends is suppressed to an appropriate speed. In addition, when increasing or decreasing the closing speed of the floodgate 2, that is, increasing or decreasing the descending speed of the door body 3, the fifth and sixth flow rate adjusting valves 65, By controlling the opening degree 66, the descending speed of the door body 3 can be increased or decreased. Further, during the descent of the door body 3 by its own weight, the opening speed of the fifth and sixth flow control valves 65 and 66 is controlled by the height of the door body 3 from the landing surface, so that the descent speed is appropriately changed. You can also. Subsequently, in step S35, the door body 3 is landed. Subsequently, in step S36, when the landing of the door body 3 is detected by the detection sensor (not shown), the second brake means 26 of each of the opening / closing device main bodies 15 is received by a signal from the control device 76 of each of the opening / closing device main bodies 15. Is operated, and the rotational movement of the second input shaft 22 is restrained. Subsequently, in step S37, in the hydraulic circuit unit 31 of each switching device main body 15, the fourth electromagnetic switching valve 54 is operated to be closed by a signal from the control device 76 of each switching device main body 15. Then, in step S38, the self-weight drop of the door body 3 is completed.

  In addition, when the door body 3 is descending under its own weight at an appropriate descending speed by the operation of each hydraulic braking device 27, the opening shaft deviation meters 75, 75 always use the rotating shafts 17 of the opening / closing device main bodies 15, 15 at all times. , 17 are measured, the measurement results are transmitted to the control devices 76, 76, respectively, and the measurement results are shared by the control devices 76, 76. Then, when the phase difference between the rotation shafts 17 of the switchgear bodies 15 based on the measurement results from the opening deviation meters 75 exceeds the reference value, the controller 76 of the switchgear main body 15 Is determined that the inclination correction of the door 3 is necessary.

  At this time, the fifth signal of the hydraulic circuit unit 31 of the hydraulic braking device 27 is received by a signal from the control device 76 of the opening / closing device main body 15 connected to the widthwise one end portion of the door body 3 that has been previously lowered. By switching the electromagnetic switching valve 55 and reducing the opening degrees of the fifth and sixth flow regulating valves 65 and 66, the discharge amount discharged from the hydraulic pump 30 is reduced, and the door body 3 descends earlier. The inclination speed of the door body 3 can be corrected by suppressing the descending speed of the one end portion in the width direction. The fourth electromagnetic switching valve of the hydraulic circuit unit 31 of the hydraulic braking device 27 is controlled by a signal from the control device 76 of the opening / closing device main body 15 connected to one end of the door body 3 that has been lowered earlier in the width direction. By operating the valve 54 in the closed state or operating the second brake means 26 (restricting the rotational movement of the second input shaft 22), the discharge amount discharged from the hydraulic pump 30 is reduced to substantially zero, It is also possible to stop the self-weight descent of one end in the width direction of the body 3 that has been previously lowered, and correct the inclination posture of the door body 3.

  As described above, when the width direction of the door body 3 is inclined with respect to the width direction of the floodgate 2 during the lowering of the weight of the door body 3 by the hydraulic braking device 27 of each opening / closing apparatus body 15, the control of each opening / closing apparatus body 15 is performed. By controlling the discharge amount of hydraulic oil from the hydraulic pump 30 of each hydraulic braking device 27 according to a signal from the device 76, the inclination posture of the door body 3 can be corrected while continuing its own weight drop. This makes it possible to smoothly reduce the descent speed of the one end in the width direction of the door body 3 that has been descending earlier, so that the door body 3 that is descending at its own weight at a relatively high speed can be normally moved from its inclined posture. The posture can be corrected smoothly. When the door body 3 is lowered by its own weight in a state where the three-phase power supply can be used, the motors 23 of the respective opening / closing device bodies 15 are driven in the closing direction to assist the own weight drop by the operation of the hydraulic braking device 27. It may be.

  As described above, in the sluice opening / closing device 1 according to the embodiment of the present invention, the sluice gate 2 is connected to the door body 3 that opens and closes the sluice gate 2, and by controlling the supply amount of hydraulic oil, the door body 3 is moved up and down. An opening / closing unit that includes a hydraulic elevating device 27 that adjusts and raises and lowers, a hydraulic pump 40 (hydraulic supply device) that supplies hydraulic oil to the hydraulic elevating device 27, and an engine 45 that is provided as a power source of the hydraulic pump 40. A pair of device main bodies 15 are independently arranged on both sides in the width direction of the door body 3. Thus, even if the three-phase power supply is lost in a disaster or the like, each hydraulic pump 40 can be driven by the engine 45, and as a result, the door body 3 can be appropriately raised and lowered by the hydraulic lifting devices 27 as usual. It can be adjusted and raised and lowered.

  Further, when the width direction of the door body 3 is inclined with respect to the width direction of the water gate 2 during the elevation of the door body 3, the water gate opening / closing device 1 controls the supply amount of the hydraulic oil in each hydraulic elevating apparatus 27. And a control device 76 for correcting the inclination posture. As a result, when the width direction of the door body 3 is inclined with respect to the width direction of the water gate 2 when the door body 3 is raised and lowered at an appropriate speed by the hydraulic elevating device 27 of each opening and closing apparatus body 15, With the control device 76 of the main body 15, it is possible to correct the inclination posture of the door body 3 while continuing to move up and down. As a result, even if the three-phase power supply is lost, it is possible to smoothly (smoothly) reduce the ascending and descending speed of one end in the width direction of the door body 3 that has been previously ascending and descending. However, the door body 3 can be smoothly corrected from the inclined posture to the normal posture.

  Further, in the water gate opening / closing device 1 according to the embodiment of the present invention, the hydraulic lifting / lowering device 27 provided as a reserve power has a function as a hydraulic braking device 27 for appropriately adjusting the own body descent speed of the door body 3. The size of the device main body 15 can be made compact, and thus the size of the water gate opening / closing device 1 as a whole can be made compact.

  In addition, in the water gate opening and closing device 1 according to the embodiment of the present invention, the electric motor 23 is provided as main power and the hydraulic elevating device 27 is provided as reserve power. However, only the hydraulic elevating device 27 is provided without the electric motor 23. It may be provided as power. In this embodiment, a hydraulic elevating device (hydraulic braking device) 27 and a hydraulic pump 30 as a hydraulic supply device are employed as the hydraulic elevating device (hydraulic braking device) and the hydraulic pressure supply device. A lifting / lowering device (hydraulic braking device) and a hydraulic pump as a hydraulic pressure supply device may be employed. In this embodiment, the hydraulic elevating device (hydraulic braking device) communicates with a hydraulic motor (hydraulic pump) and a communication path (discharge path and suction path) of the hydraulic motor (hydraulic pump) to supply water to the hydraulic motor. And a hydraulic circuit unit for adjusting the supply amount of water (discharge amount of water from the hydraulic pump).

  1 floodgate opening / closing device, 2 floodgate, 3 door body, 15 opening / closing device main body, 27 hydraulic lifting device (hydraulic braking device), 30 hydraulic motor (hydraulic pump), 31 hydraulic circuit unit, 40 hydraulic pump (hydraulic pressure supply device), 45 engine, 76 control unit

Claims (2)

When opening and closing the water gate, a rotating shaft that rotates as the door body moves up and down,
A differential device having an output shaft connected to the rotating shaft;
An electric motor coupled to a first input shaft of the differential;
The door body is connected to the second input shaft of the differential device, and controls the rotation of the second input shaft by controlling a supply amount of hydraulic fluid when power to the electric motor is lost. A hydraulic lifting device that raises and lowers the lifting speed by adjusting the lifting speed,
A hydraulic pressure supply device for supplying hydraulic fluid to the hydraulic pressure lifting device,
An engine provided as a power source of the hydraulic pressure supply device;
, A pair of switchgear bodies each independently disposed on both sides in the width direction of the door body,
When the power to the electric motor is lost, during raising and lowering of the door body , when the width direction of the door body is inclined with respect to the width direction of the water gate, the supply amount of the hydraulic fluid in each of the hydraulic elevating devices is reduced. A water gate opening / closing device comprising a control device for controlling and correcting the inclination posture. When lowering the door by its own weight, the hydraulic pressure raising and lowering device controls the discharge amount of the hydraulic fluid generated by the rotation of the second input shaft accompanying the lowering of the weight of the door, thereby lowering the weight of the door. The water gate opening / closing device according to claim 1, which has a function as a hydraulic braking device for adjusting a speed.

Images