JP2000282443A - Master and slave gate and method for driving the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide master and slave gates capable of simplifying hydraulic facilities without requiring a hydraulic line between the hydraulic facilities and a separately installed hydraulic pressure generator, facilitating construction and maintenance of the facilities, avoiding malfunctioning of the facilities due to damage to hydraulic lines, increasing the width of a door without increasing the deformation rigidity of a structure, and eliminating the need for a separately installed aperture detection device for the slave gate so that tuning control is simplified and maintenance of equipment is facilitated. SOLUTION: The invention includes a master gate 2a which moves up and down and a slave gate 2b rotatably journaled on the top of the master gate 2a. The back face of the slave gate 2b is connected to the top of the master gate 2a by at least one hydraulic cylinder 3 of the type integrated with a drive source, comprising a hydraulic pump 5 driven by a servomotor 4b and a hydraulic operating end directly connected to the hydraulic pump 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an up-and-down parent-child gate used for dams, weirs, sluice gates, etc., and more particularly to a parent-child gate capable of opening and closing a heavy child gate with a simple mechanism. About.

[0002]

2. Description of the Related Art FIG. 5 is a front view and a side view schematically showing a conventional drive system for raising and lowering a parent gate of a dam, a movable weir of a river, a floodgate and a raising and lowering of a child gate are wire rope winch type parent and child gates. FIG. In the figure, reference numeral 1 denotes a weir pillar erected at a desired interval on the ground. Reference numeral 2a denotes a parent gate provided between the weir columns 1 so as to be movable up and down. Reference numeral 2b denotes a child gate. The child gate opening / closing device 21 provided above the weir pillar 1 has a lower end pivotally supported on the parent gate 2a by a rotation shaft 2c.
Up and down with the wire rope 21a hung on the winch of the. Reference numeral 14 denotes a child gate opening detection device, which detects the opening based on the winding amount of the messenger wire rope 21b. In the parent-child gate configured as described above, the child gate opening detection device 1 is used to adjust the rotation of the child gate 2b.
The rotation amount (inclination) is detected by receiving a signal from the control unit 4 and the correction is performed when the rotation amount exceeds the allowable amount (prior art 1).

FIG. 6 shows that the child gate 2b moves up and down in the vertical plane of the parent gate 2a. The opening and closing device 20 for the parent gate that moves up and down the parent gate 2a is of a wire rope winch type. It is a hydraulic cylinder type that moves up and down. The hydraulic cylinder 15 and the hydraulic pressure generating device 8 are connected by the hydraulic piping 10, and an operation signal is sent to the hydraulic pressure generating device 8 to be operated. At this time, the operation amounts of the plurality of hydraulic cylinders 15, that is, the elevation of the child gate 2b, are detected and synchronized by the child gate opening detection device 14 using the messenger wire 21b (prior art 2).

FIGS. 7 and 8 show the operation of raising and lowering the parent gate 2a and raising and lowering the child gate 2b using a hydraulic cylinder. The child gate 2b rotates by pushing and pulling the torque arm 2d fixed to the rotation shaft 2c with the hydraulic cylinder 15. 9 is a controller provided in the operation room, 10 is a hydraulic pipe, 11 is operation signal wiring, 12 is control signal wiring,
13 is a power wiring. A hydraulic cylinder 15 is connected to a hydraulic pressure generating device 8 housed in an operation room or the like by a hydraulic pipe 10,
An operation signal is sent from the controller 9 to the hydraulic pressure generator 8 to perform an operation. At this time, the operation amounts of the plurality of hydraulic cylinders 15, that is, the rotation amounts of the child gates 2b are detected by the child gate opening detector 14, and the undulating operation is performed in synchronization (prior art 3).

[0005]

In the prior art 1 configured as described above, (1) the opening / closing device itself becomes long, so that an operation room having a large space is required. (2) Since the opening / closing device is a wire rope winch type, the number of parts is large and the number of regular maintenance targets is large. (3) Future replacement work of equipment will be large-scale. (4) Since the wire rope is interposed between the child gate 2b and the operation room or the like, it is necessary to adjust the initial extension of the wire rope. And so on.

Further, the prior art 2 configured as described above
In (1) and (3), a hydraulic pipe is required between a separately provided hydraulic pressure generating device and a hydraulic cylinder. Moreover, the hydraulic piping for the child gate is once extended to the center of the parent gate and distributed to the left and right in consideration of synchronization, so that the piping becomes longer. In addition, since the parent gate moves up and down, a flexible tube is required for piping between the gate and the concrete dam. -Large pressure loss due to long piping length.・ Maintenance of the piping section is difficult because it is also piped inside the parent gate.・ It is necessary to take measures to protect the exposed flexible tube. -Hydraulic oil is flowing in the piping, and appropriate measures for oil leakage are required. -If there is a part submerged in the piping, appropriate anticorrosion measures are required. (2) A separate hydraulic pressure generator is required, and an installation space for the operation room or the like is required. There are cases where the hydraulic pressure generating device is also used as separate cases for the parent and child. (3) The hydraulic pressure generating device is composed of many parts, and the number of objects for periodic maintenance increases, and it takes time to investigate the cause when a problem occurs. And so on. (4) Since a hydraulic pipe is provided between the child gate 2b and the operation room, when an opening detection device for a child gate using a messenger wire rope is used for opening detection, the messenger wire rope is connected between the child gate and the operation room. Is required.

As described above, the conventional hydraulic cylinder itself does not have a function of correcting a tuning error, and as a countermeasure when the tuning of each hydraulic cylinder is lost, the hydraulic flow rate to any one of the hydraulic cylinders is shut off by the control valve. Thus, adjusting the displacement and restoring the tuning are performed, but tuning of a large number of hydraulic cylinders is difficult. In order to achieve synchronization, a complicated device configuration such as a child gate opening detector, a hydraulic control valve, and an arithmetic device that controls these devices is required. Damage to the hydraulic piping causes malfunction of the equipment, so special care must be taken in laying and maintaining the hydraulic piping.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and to provide a parent-child gate which has a simple structure and whose gate itself can be easily tuned right and left, and a driving method thereof.

[0009]

A first aspect of the present invention comprises a parent gate which moves up and down, and a child gate rotatably supported above the parent gate, and a back surface of the child gate and a parent gate. Is connected by at least one drive source-integrated hydraulic device comprising a hydraulic pump driven by a servomotor and a hydraulic operating end directly connected to the hydraulic pump. The drive-source-integrated hydraulic device is compact and can be mounted on the main gate body. Since the servomotor and the hydraulic pump, which are the hydraulic pressure generating sources, are directly connected to the hydraulic operating end, there is no need to separately install a hydraulic pressure generating device, and it is not necessary to lay hydraulic piping on the hydraulic cylinder. In addition, by using the tuning control function of the drive-source-integrated hydraulic device to operate a number of drive-source-integrated hydraulic devices, a parent-child gate with a wide child gate can be realized without increasing the rigidity of the child gate. And equipment can be simplified.

A second aspect of the present invention is that a parent gate moves up and down,
With a child gate that can move up and down in the vertical plane of the parent gate,
The upper end of the child gate and the upper part of the parent gate are connected by a drive source integrated hydraulic device comprising a hydraulic pump driven by a servomotor and a hydraulic operating end directly connected to the hydraulic pump. Since the above drive source integrated hydraulic device is compact,
The equipment to the main gate body becomes possible. Since the servomotor and the hydraulic pump, which are the hydraulic pressure generating sources, are directly connected to the hydraulic operating end, there is no need to separately install a hydraulic pressure generating device, and it is not necessary to lay hydraulic piping on the hydraulic cylinder.

A third aspect of the present invention is that a parent gate moves up and down,
A hydraulic pump having a child gate rotatably supported above the parent gate, and a torque arm fixed to the rotation axis of the child gate being driven by a servomotor provided on one or both sides of the parent gate And a hydraulic source integrated with a drive source comprising a hydraulic operating end directly connected to the hydraulic pump. The drive-source-integrated hydraulic device is compact and can be mounted on the main gate body. Since the servomotor and the hydraulic pump, which are the hydraulic pressure generating sources, are directly connected to the hydraulic operating end, there is no need to separately install a hydraulic pressure generating device, and it is not necessary to lay hydraulic piping on the hydraulic cylinder.

A fourth aspect of the present invention is a method of driving a parent-child gate using a drive source-integrated hydraulic device, wherein a hydraulic operating end is a hydraulic cylinder having a piston rod displacement detector built-in, and the displacement signal is generated by the displacement signal. By controlling the servomotor of the drive source integrated hydraulic device, tuning control of the child gate is performed. Each of the above hydraulic cylinders detects a piston rod displacement with a built-in displacement detector, and directly controls a servomotor by an arithmetic unit to perform hydraulic flow rate control and perform child gate tuning control. A separate opening detector for the child gate,
A separate hydraulic pressure generator is not required.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a rear view and a side view showing an outline of a parent-child gate according to Embodiment 1 of the present invention, and FIG. 2 is a plan view and an explanatory view of a drive source integrated hydraulic cylinder. As shown in the figure, a wire rope 2 hung on a winch of a parent gate opening / closing device 20 provided above a weir post 1.
A drive source integrated hydraulic cylinder 3 is installed as a drive source integrated hydraulic device for operating the rotation of a child gate 2b rotatably supported on the upper part of the parent gate 2a that moves up and down at 0a.
The distal end of the piston rod is configured to axially support the child gate 2b on the back (downstream side) on both upper sides thereof. The operation signal wiring 10, the control signal wiring 11, and the power wiring 13 are wired from the drive source integrated hydraulic cylinder 3 to the controller 9, and the controller 9 performs the tuning control operation of the child gate 2b. The drive source-integrated hydraulic cylinder 3 includes a controller 4a as an independent control device, a hydraulic pump 5 driven by a servo motor 4b operated by a command of the controller 4a, and an operation as a hydraulic operating end directly connected to the hydraulic pump 5. Unit (actuator), an oil tank 6 and a displacement detector 7 are integrally provided. The oil tank 6 is provided to absorb a change in the amount of internal oil when the drive source integrated hydraulic cylinder 3 is displaced, and may have a small capacity. Also,
Since only one of the corresponding actuators (actuators) needs to be moved at a low speed, the servomotor 4b and the hydraulic pump 5 are extremely compact as compared with the conventional hydraulic pressure generator, and are integrated with the actuators (actuators). Parent gate 2
Can be equipped on a.

The operation of adjusting the tilt by rotating the child gate 2b of the parent-child gate configured as described above so as not to cause deformation is performed by the operation signal of the controller 9 of the hydraulic cylinder 3 integrated with the drive source. The servomotor 4b is operated at 4a, and the hydraulic pump 5 is rotated to generate hydraulic pressure.

The tuning of the operation amount for rotating the child gate 2b is as follows.
The displacement of each drive-source-integrated hydraulic cylinder 3 is measured by a displacement detector 7 integrally provided in the drive-source-integrated hydraulic cylinder 3, and a displacement signal is sent to the controller 9 via the controller 4a. The feedback amount obtained by the tuning calculation in the controller 9 is sent from the controller 4a to the servo motor 4b to perform motor control, and
Since the two or more drive-source-integrated hydraulic cylinders 3 for rotating b are synchronized, no error occurs in the operation amount, and the child gate 2
Unnecessary deformation of b can be prevented from occurring.

When the present invention is applied to a parent-child gate under severe environmental conditions such as splashing, the drive source-integrated hydraulic cylinder 3 may be a cylinder in which the surface of a cylinder rod (metal rod) is covered with ceramic. preferable. In this case, corrosion of the rod can be prevented, and irregularities on the metal rod can be easily detected from the ceramic coating with a magnetic detector, etc., so the cylinder stroke position detection operation of the built-in cylinder type detector Is more certain.

Embodiment 2 FIG. FIG. 3 is a front view and a side view showing an outline of a pull-up parent-child gate according to Embodiment 2 of the present invention. As shown in the figure, the distal end of the piston rod of the drive source integrated hydraulic cylinder 3 vertically suspended above the parent gate 2a is connected to the upper ends on both sides of the child gate 2b. The operation signal wiring, the control signal wiring, and the power wiring are wired, and the vertical movement of the child gate 2b is tuned by a controller (not shown). The drive source integrated type hydraulic cylinder 3 is equipped with a controller 4a, a servo motor 4b, a hydraulic pump 5, an oil tank 6, and a displacement detector 7, as in the first embodiment. The operation of adjusting the vertical movement of the child gate 2b of the parent-child gate configured as described above so that no deformation occurs is the same as in the first embodiment.

Embodiment 3 FIG. 4 is a plan view showing an outline of a parent-child gate according to a third embodiment of the present invention and an explanatory view of driving a child gate by a drive source-integrated hydraulic cylinder. As shown in the drawing, a drive source integrated hydraulic cylinder 3 is installed as a drive source integrated hydraulic device for operating the rotation of a child gate 2b in a storage portion provided on both sides of the parent gate 2a, and the tip of a piston rod is set to a child. The gate 2b is configured to be axially mounted on the end of a torque arm 2d that is pivotally supported on a rotation shaft 2c. The operation signal wiring 10, the control signal wiring 11, and the power wiring 13 are wired from the drive source integrated hydraulic cylinder 3 to the controller 9,
The child gate 2b is tuned and controlled by a controller (not shown). The drive source integrated hydraulic cylinder 3 includes a controller 4a as an independent control device and a controller 4a.
The hydraulic pump 5 driven by the servo motor 4b operated by the command of the above, an actuator (actuator) as a hydraulic operating end directly connected to the hydraulic pump 5, an oil tank 6 and a displacement detector 7 are integrally provided. This is the same as in the first embodiment. The operation of adjusting the inclination by rotating the child gate 2b of the parent-child gate configured as described above so that the driving source integrated hydraulic cylinder 3 does not deform is the same as in the first embodiment.

[0019]

As described above, according to the present invention, there is no need for a hydraulic pipe between the hydraulic pressure generating device and the hydraulic cylinder or a separate hydraulic pressure generating device, so that the hydraulic equipment can be simplified, and the construction and maintenance of the equipment can be achieved. Becomes easier. Equipment malfunction due to hydraulic piping damage can also be avoided. In addition, since tuning control of a large number of hydraulic equipment can be performed, the width of the child gate can be increased without increasing the deformation rigidity of the structure, and the equipment can be simplified. The facility construction and maintenance can be facilitated and the economy can be improved. In addition, by controlling the synchronization of the child gate using the displacement detector and the servo motor built into the drive source-integrated hydraulic device, a separate displacement detection device for the child gate and a separate hydraulic pressure generation device are not required. For example, the tuning control is simplified, and the maintenance of the device becomes easy.

[Brief description of the drawings]

FIGS. 1A and 1B schematically show a parent-child gate according to a first embodiment of the present invention, wherein FIG. 1A is a rear view and FIG.

FIGS. 2A and 2B schematically show a parent-child gate according to the first embodiment of the present invention, wherein FIG. 2A is a plan view and FIG. 2B is an explanatory view of a drive source integrated hydraulic cylinder.

FIGS. 3A and 3B schematically show a parent-child gate according to a second embodiment of the present invention, wherein FIG. 3A is a front view and FIG.

4 (a) is a plan view, FIG. 4 (b) is a side view, and FIG. 4 (c) is an explanatory view of a drive source integrated hydraulic cylinder according to Embodiment 3 of the present invention.

5A and 5B schematically show an embodiment of a conventional parent-child gate, wherein FIG. 5A is a rear view and FIG. 5B is a side view.

6 (a) is a front view and FIG. 6 (b) is a side view showing the outline of another embodiment of the conventional parent-child gate.

7 (a) is a perspective view showing an outline of still another embodiment of a conventional parent-child gate, and FIG. 7 (b) is an explanatory view of driving a child gate by a hydraulic cylinder.

FIG. 8 is a plan view showing an outline of still another embodiment of the conventional parent-child gate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weir pole 2a Parent gate 2b Child gate 2c Rotating axis 2d Torque arm 3 Drive source integrated hydraulic cylinder 4a Controller 4b Servo motor 5 Hydraulic pump 6 Oil tank 7 Displacement detector 8 Oil pressure generator 9 Controller 10 Hydraulic piping 11 Operation signal Wiring 12 Control signal wiring 13 Power wiring 14 Child gate opening detection device 15 Hydraulic cylinder 20 Parent gate opening / closing device 20a Wire rope 21 Child gate opening / closing device 21a Wire rope 21b Messenger wire rope

Continuation of the front page (72) Inventor Makoto Kataoka 1-2-1 Marunouchi, Chiyoda-ku, Tokyo F-term (reference) 2D019 AA11 BA02

Claims (4)

[Claims] 1. A hydraulic system, comprising: a parent gate that moves up and down; and a child gate rotatably supported above the parent gate. A hydraulic pressure driven by a servomotor on the back surface of the child gate and above the parent gate. A parent-child gate connected by at least one drive source-integrated hydraulic device comprising a pump and a hydraulic operating end directly connected to the hydraulic pump. 2. A hydraulic pump, comprising: a parent gate that moves up and down; and a child gate that can move up and down in a vertical plane of the parent gate. A parent-child gate connected by at least one drive source-integrated hydraulic device having a hydraulic operating end directly connected to a pump. 3. A parent gate that moves up and down, and a child gate rotatably supported above the parent gate, and a torque arm fixed to a rotation axis of the child gate is attached to one or both sides of the parent gate. A parent-child gate connected to a drive-source-integrated hydraulic device comprising a hydraulic pump driven by a servomotor provided in the vehicle and a hydraulic operating end directly connected to the hydraulic pump. 4. A method of driving a parent-child gate using a drive source-integrated hydraulic device, wherein a hydraulic operating end is a hydraulic cylinder with a built-in piston rod displacement detector, and the displacement signal is used to control the drive source-integrated hydraulic pressure. A method for driving a parent-child gate, comprising performing tuning control of a child gate by controlling a servomotor of a device.