JPH0419068Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a water gate opening/closing device, and particularly to a water gate opening/closing device that can operate the upper and lower gate bodies of a two-stage gate at the same time.

[Conventional technology]

Conventionally, two-stage gates used for water management in agricultural water dams, etc. generally have a lower gate closed completely and an upper gate moved up and down to adjust the water level.
In addition, in the event of a flood, etc., the upper and lower door bodies are pulled up together.

[Problem that the invention attempts to solve]

The device used in the above conventional method is either a combination of opening/closing machines for the upper door body and a lower door body, and the operation is controlled by an actuating device or a clutch, or if there is only one opening/closing machine, the opening/closing machine for the upper door body is controlled by a clutch. Methods such as using a hook to connect the body and the lower door body not only complicate the mechanical equipment, but also complicate the means to control the operation, increasing costs.

[Means for solving problems]

This invention was developed with the aim of solving the conventional problems and providing a water gate opening/closing device with a simple structure, low cost, and easy operation. In the floodgates that open and close,
Lifting rods are hung down from drive supports provided on both sides of the water gate, the lower ends of the lifting rods are inserted into guides provided on the lower door body, and a stopper is fixed to the lower edge at a position in contact with the lower surface of the guide. At the same time, when the stopper is in contact with the guide, the lower end surface of the lower gate body is positioned so as to be in contact with the bottom surface of the water gate, and the lower gate body is set as a water gate. The water gate section is configured to be opened and closed by the upper door body, and a pair of double cylinders are installed below both side edges of the lower door body, and the upper and lower ends of each cylinder are connected with connecting pipes. The piston rods of each double cylinder are connected upward, the upper end of the piston rod of the main cylinder is connected to the lower part of the elevating rod, and the upper end of the piston rod of the sub cylinder is connected to the upper end of both sides of the upper door body. This constitutes a water gate opening/closing device characterized in that the water gate is connected to the water gate.

[Effect]

According to the present invention having the above configuration, by raising and lowering the elevator rod to a certain height, the upper door body can be moved up and down in order to open and close the water gate section of the lower door body.

Furthermore, by raising the elevator rod, the lower door body and the upper door body can be raised and lowered.

〔Example〕

Embodiments of the present invention will be described based on the drawings. FIG. 1 is a front view of the device. The lower door body 1 is formed into a rectangular plate shape at the front, and is fitted into the dam water gate 9 so as to be vertically movable with the bottom surface being vertical. A rectangular water gate 1A is cut out in the upper center of the front face of the lower door body 1, and the upper door body 2 is disposed in front of the water gate 1A so as to be movable up and down and to close the water gate 1A. .

A pair of twin cylinders 3, 3', 3, 3' are erected and fixed at the lower part of both side edges 1B, 1B of the lower door body 1. Each double cylinder 3, 3' has a main cylinder 3 and a sub cylinder 3' disposed in parallel, and their upper and lower end edges are connected through connecting pipes 4, 4, respectively.

Further, the main cylinders 3, 3 have piston rods 3A, 3A facing upward, and sub cylinders 3',
3' has piston rods 3'A, 3'A facing upward,
The upper end portions of the piston rods 3'A, 3'A are connected to engaging portions 2A, 2A formed on the upper side of the upper door body 2 by pins 2B.

Guides 5, 5 are disposed at the upper ends of both side edges 1B, 1B corresponding to the upper parts of the main cylinders 3, 3. The guides 5, 5 have guide holes 5A, 5A.
are formed in the guide holes 5A, 5A, and lifting rods 6,
6 is fitted into the interior so that it can be raised and lowered while being prevented from rotating with a sliding key or the like. The lower end portions of the lifting rods 6, 6 are connected to the tips of the piston rods 3A of the main cylinders 3, 3 via connecting portions 6A, 6A, and when the piston rods 3A, 3A are extended, the lifting rods 6 , 6 are fixed at positions in contact with the lower surfaces of the guides 5, 5.
Further, upper stoppers 8, 8 are fixed to the upper portions of the lifting rods 6, 6 at a certain distance from the stoppers 7, 7. The distance between the vertical stoppers 7 and 8 is set to the vertical interval of the upper door body 2. Further, the upper ends of the lifting rods 6, 6 are connected to drive supports 10, 10 provided above the dam water gate, so that they can move up and down together.

In the present invention having the above structure, when the cylinders 3 and 3' are filled with hydraulic oil and are in the state shown in Fig. 1, when it becomes necessary to store a large amount of water in the dam water gate, the lifting rods 6 and 6 are moved. lower it. Then, the piston rods 3A, 3A descend, and the hydraulic oil in the main cylinders 3, 3 moves to the sub cylinders 3', 3' via the lower connecting pipes 4, 4, and as a result, the hydraulic oil in the main cylinders 3, 3 moves to the sub cylinders 3', 3'.
3' piston rods 3'A, 3'A rise.
The upper ends of the piston rods 3'A, 3'A are connected to the engaging parts 2A, 2A of the upper door body 2 via pins 2B, 2B, so the water gate part 1A of the lower door body 1 can be adjusted to any height. It gets blocked. When the upper stoppers 8, 8 are lowered to the guides 5, 5, the upper door body 2 completely closes the upper part of the water gate section 1A.

Also, raise the lifting rods 6, 6, stopper 7,
7 is raised until it touches the guides 5, 5, and the lifting rods 6, 6 are further raised, the lower door body 1 is raised to the upper door with the guides 5, 5 hanging on the stoppers 7, 7 of the lifting rods 6, 6. It can be raised together with body 2. Thereby, the water gate 9 can be fully opened, and the water gate 9 can be closed by the lower door body 1 and the upper door body 2 simply by lowering the lifting rods 6, 6.

As described above, the present invention moves the upper door body 2 up and down within the height range of the water gate section 1A of the lower door body 1 by moving the lifting rods 6 and 6 up and down only between the upper and lower stoppers 7 and 8. be able to.

Further, by raising the stoppers 7, 7 of the lifting rods 6, 6 above the height of the guides 5, 5, the lower door body 1 can be raised to the upper part of the dam water gate. Note that the present invention is not limited to the above configuration, and the design can be changed as appropriate. for example,
The lifting rod may not be a screw-type spindle, but may be a regular rod, and may have a lock tooth formed on its upper portion to engage with a pinion.

〔effect〕

The present invention has excellent effects as described above.

A: Since the upper door body is moved up and down by the twin cylinders, the piston rod faces upward, and the upper door body can be moved up and down simply by raising and lowering the piston rod with the elevating rod.

B. By raising the lifting rod above a certain position, the lower door body and the upper door body can be raised together, so the device structure is extremely simple, less prone to failure, low manufacturing cost, and easy to operate. Therefore, it is possible to automatically control the opening and closing of the water gate by automatically operating the vertical movement of the lifting rod according to changes in the water level using a water level gauge.

[Brief explanation of drawings]

The drawings relate to the present invention, and Fig. 1 is a front view, Fig. 2 is a plan view of the main part of the A-A-B-B cross section in Fig. 1, and Fig. 3 is a front view showing the upper door body being raised. . 1...Lower door body, 1A...Sluice gate part, 1B...Side edge part, 2...Upper door body, 2A...Engaging part, 2B...Pin, 3, 3'...Double cylinder, 3 ...Main cylinder, 3'...Sub-cylinder, 3A, 3'A...Piston rod, 4...Connecting pipe, 5...Guide, 5A...
... Guide hole, 6 ... Lifting rod, 6A ... Connection part,
7, 8...Stopper, 9...Sluice gate, 10...Drive support.

Claims (1)

[Scope of utility model registration request] In water gates that open and close dam water gates with upper and lower gate bodies,
Lifting rods are hung down from drive supports provided on both sides of the water gate, the lower ends of the lifting rods are inserted into guides provided on the lower door body, and a stopper is fixed to the lower edge at a position in contact with the lower surface of the guide. At the same time, when the stopper is in contact with the guide, the lower end surface of the lower gate body is positioned so as to be in contact with the bottom surface of the water gate, and the lower gate body is set as a water gate. The water gate section is configured to be opened and closed by an upper door body, and a pair of double cylinders are installed below both side edges of the lower door body, and the upper and lower ends of each double cylinder are connected. The piston rods of each double cylinder are connected upward, and the upper end of the piston rod of the main cylinder is connected to the lower part of the elevating rod, and the upper end of the piston rod of the sub cylinder is connected to the upper edge of both sides of the upper door body. A water gate opening/closing device characterized by being connected to an engaging portion.