JP6022219B2 - Gate pillar-less gate opening and closing device - Google Patents

Description

The present invention relates to a gate post-less gate opening / closing device that opens and closes a drainage channel, a water intake channel, and the like.

  Conventionally, gate opening and closing devices for opening and closing river sluice gates and water gates are known. A gate opening / closing device 101 shown in FIG. 9 (conventional example 1) is connected to a gate pole 103, a switch 104 installed on the gate pole 103, a rack 105 that is moved up and down by the switch 104, and the rack 105. And a roller gate 110. The switch 104 lifts the roller gate 110 by moving the rack 105 up and down. The roller gate 110 slides in the vertical direction along the door groove 106 of the gate pillar 103 to open and close the water channel 102. Such a gate opening / closing device 101 discharges river water to prevent inflow when it is a gate lock, and takes water from an irrigation channel when it is a water intake gate.

In addition to the gate opening and closing device that pulls up the door body linearly as described above, a flap gate that rotates the door body to open and close the water channel is also known.
FIG. 10 (conventional example 2) is a cross-sectional view showing a conventional flap gate. A flap gate 201 shown in FIG. 10 includes a gate 210 and a hinge 203 that rotatably supports the upper portion of the gate 210. The flap gate 201 opens and closes the gate 210 by water pressure acting from the inside of the water channel 202.

  The flap gate shown in FIG. 10 has a relatively simple structure, is easy to install, and is compact so that it can be installed in a small water channel at low cost. Moreover, the gate 210 can be forcibly opened and closed by attaching a driving device to the gate.

  However, when the flap gate of FIG. 10 opens and closes the outlet by the rotation of the gate 210, if the foreign object such as dust is caught between the gate 210 and the lower part of the outlet, the outlet cannot be completely sealed. There is sex.

  On the other hand, the over-link gate disclosed in Patent Document 1 controls two types of hydraulic cylinders, a single-acting hydraulic cylinder and a double-acting hydraulic cylinder. To the second link of the four-bar linkage mechanism, the four-bar linkage mechanism is opened by the first double-acting hydraulic cylinder, the door body is pulled up in a substantially vertical direction, and then the door body is rotated to open the water channel. The structure is open. Conversely, when closing the water channel, the first double-acting hydraulic cylinder closes the four-bar linkage mechanism, rotates the door to make the water channel semi-closed, and then pulls it out in a substantially vertical direction. To seal.

Japanese Patent No. 3413598

  However, since the gate opening / closing device 101 shown in FIG. 9 includes the gate pillar 103, when the gate opening / closing device 101 is used for a lock gate, there is a possibility that the gate pillar 103 may be troubled when it is flooded. Moreover, when this gate opening / closing device 101 is used for a water channel, the load transmitted to the foundation ground by the gate pillar 103 becomes large, which may cause uneven settlement. Furthermore, in order to operate the opening / closing machine 104, it is necessary to provide a management bridge and the like, which together with the gate pillar 103 damages the surrounding landscape, and there is a problem that the construction cost becomes high.

  In addition, as described above, the gate opening / closing device 201 shown in FIG. 10 closes the water channel 202 reliably by closing the gate 210 in an incomplete state when a suspended matter or the like is sandwiched between the gate 210 and the water channel 202. There was a possibility that it could not be opened and closed. Moreover, if the closure of the flap gate 210 is incomplete, there is a possibility that the river water flows backward inside the bank. As a result, the use of the gate opening and closing device 201 is limited to a high ground area in the bank where no disaster occurs even if river water flows backward. Further, the gate opening and closing device 201 has a problem that it is not suitable for water intake because the opening cross section cannot be accurately determined when the gate 210 is rotated to an intermediate position.

  Furthermore, although the over-link gate of Patent Document 1 can prevent the inclusion of foreign substances such as dust to some extent, depending on the amount and size of the foreign substances, there is a possibility that pinching cannot be completely prevented. There was a problem in that respect. Further, since the second single-acting hydraulic cylinder cannot be controlled, there is room for improvement in the opening / closing control of the door according to the situation.

  The problem of the present invention is that it is compact and can reliably open and close the flow path, can open and close the door body without complicated mechanisms and controls, and can control the operation of the door body to further pinch impurities. It is an object of the present invention to provide a gate pillar-less gate opening / closing device that can be reliably prevented.

The present invention has been made to solve the above-described problems, and the invention of the gateless gate opening and closing device according to claim 1 includes a door body that opens and closes an opening of a flow path, and an opening for the door body. An opening / closing mechanism that switches the opening from the half-open state to the fully-open state by switching the opening from the closed state to the substantially half-open state by pulling it straight along the part and then pulling it up while rotating the door body. The opening / closing mechanism includes a rotating torque shaft that is horizontally provided on the upper surface of the water channel, a rotating shaft that is fixed to the torque shaft and rotates together with the torque shaft, and a distal end portion provided on an upper portion of the door body. A torque arm pivotally attached to the suspension fitting, a double-acting first hydraulic cylinder having one end pivotally attached to the torque arm and the other end pivotally attached to the upper part of the flow path; Torque arm A double-acting type second hydraulic cylinder having one end pivotably attached and the other end pivotably attached to a position above the position of the tip of the torque arm of the door suspension fitting. When the opening portion is switched from the closed state to the substantially half-open state by the opening / closing mechanism, the torque arm is rotated about the torque axis by the double-action first hydraulic cylinder and the double-action second When the door body is switched from the half-open state to the fully-open state by pressing the lower part of the door body against the opening centered on the connecting portion with the torque arm by extension of the hydraulic cylinder. The door body is rotated by rotating the torque arm about the torque axis by the double-acting first hydraulic cylinder and the double-acting second hydraulic cylinder. It is characterized in that switching to an open state.

The invention according to claim 2 is the gate pole-less gate opening and closing device according to claim 1,
The door body is swung by repeatedly expanding and contracting the double acting second hydraulic cylinder.

  According to the gateless gate opening and closing device of the present invention, the door body can be switched from the closed state to the half-open state, in particular, by opening and closing the door body in cooperation with two types of double-acting hydraulic cylinders. Therefore, it is possible to adjust the water flow and remove foreign substances such as dust accumulated at the bottom of the opening due to the water flow. Furthermore, since the door body is opened and closed in cooperation with the double-acting hydraulic cylinder, it is possible to control the opening and closing of the door body according to the situation.

  In addition, since the double-acting type second hydraulic cylinder is a double-acting type, it is possible to control various operations, and when the door body is closed, the opening is moved by swinging the door body back and forth. It is possible to sweep out the foreign matter accumulated in the lower portion, and more reliably prevent the foreign matter from being caught.

The front view of embodiment of the gate pole less gate opening and closing apparatus concerning the present invention is shown. The top view of the embodiment of the gate pole less gate opening and closing device concerning the present invention is shown. The side sectional view of the embodiment of the gate pole less gate opening and closing device concerning the present invention is shown. It is a figure which shows the operation state of embodiment of the gateless gate opening / closing apparatus which concerns on this invention, and shows a 1st operation state. It is a figure which shows the operation state of embodiment of the gate pole less gate opening / closing apparatus which concerns on this invention, and shows a 2nd operation state. It is a figure which shows the operation state of embodiment of the gate pole less gate opening / closing apparatus which concerns on this invention, and shows a 3rd operation state. It is a figure which shows the sand removal operation | movement of embodiment of the gate pole less gate opening / closing apparatus which concerns on this invention. It is a figure which shows the other Example of the opening / closing mechanism of embodiment of the gate pole less gate opening / closing apparatus which concerns on this invention. It is sectional drawing which shows the conventional gate opening / closing apparatus (conventional example 1). It is sectional drawing which shows the conventional gate opening / closing apparatus (conventional example 2).

  Hereinafter, an example of an embodiment of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a front view of a gate opening / closing device according to an embodiment of the present invention. FIG. 2 is a plan view of the gate post-less gate opening / closing device according to the embodiment of the present invention. FIG. 3 is a side cross-sectional view of the gate opening / closing device according to the embodiment of the present invention in a closed state. 4-6 is a schematic diagram which shows the operation state until the door body of a gate pole less gate opening / closing apparatus changes from a fully closed state to a fully open state. FIG. 7 is a view showing a sand removal operation of the gate pillar-less gate opening / closing device. FIG. 8 is a view showing another embodiment of the opening / closing mechanism of the gate pole-less gate opening / closing device.

  The gate pillar-less gate opening and closing device 10 is a device that opens and closes a drain gate gate that discharges river water and the like to prevent inflow. The gate pillar-less gate opening / closing device 10 includes a door body 20 and an opening / closing mechanism 30 for opening and closing the door body 20. The opening / closing mechanism 30 includes a double-acting type first hydraulic cylinder 33 for rotating the door body 20, and a double-acting type second hydraulic cylinder for moving the door body 20 in a substantially vertical direction and performing a sand discharging operation. A hydraulic cylinder 34 is provided on the door body via a torque arm 32 so as to be rotatable. In this embodiment, the door body 20 is opened and closed by using two sets of the double-acting type first hydraulic cylinder 33 and the double-acting type second hydraulic cylinder 34. However, the present invention is not limited to this. The number should be determined by ability.

  The water channel 2 is a channel through which river water and the like flow. The water channel 2 includes an opening 2a and a guide surface 2b. The guide surface 2b is a portion that guides the door body 20 so as to be movable in a substantially vertical direction. The guide surfaces 2b are formed at both ends in the width direction of the opening 2a.

  The switchgear base 40 is a basic part for installing the gate pole-less gate switchgear 10. A bearing 35 for the torque shaft 31 and a double-acting first hydraulic cylinder 33 are placed on the switchgear base 40. The switchgear base 40 is provided in the upper part of the water channel 2.

The door body 20 is an opening / closing member that opens and closes the water channel 2. The door body 20 is a plate-like door having a larger area than the opening 2a. On the upper part of the door body 20, a door body hanging bracket 21 is provided. Further, an upper roller 22 and a lower roller 23 are provided on both side surfaces of the door body 20.
In addition, the door hanging bracket 21 is provided with a shaft 32a for rotatably connecting to the torque arm 32 and a shaft 34b for rotatably connecting to the double-acting second hydraulic cylinder 34. Yes. In this embodiment, the shaft 34b is provided above the shaft 32a, and the double-acting type second hydraulic cylinder 34 assists the movement of the door body 20 in the substantially vertical direction and performs sand removal operation with the shaft 32a as a fulcrum. Be able to.

  The upper roller 22 and the lower roller 23 are in rolling contact with the guide surface 2b like an automobile tire, and have a role of assisting the smooth opening and closing of the door body 20.

The torque arm 32 is a member that drives the door body 20 by a rotating operation. The torque arm 32 is rotatably attached to the door body hanging bracket 21 by a shaft 32a, and has a structure for opening and closing the door body 20 with the shaft 32a as a fulcrum.
Further, as shown in FIG. 3, the torque arm 32 is provided with shafts 31, 33a, 33a, 33a, 33a, 33b, and the shafts for rotatably mounting the torque shaft 31, the double-acting type first hydraulic cylinder 33, and the double-acting type second hydraulic cylinder 34. A total of three shafts 34a are provided. By rotating the torque arm 32 in cooperation with the double acting first hydraulic cylinder 33 and the double acting second hydraulic cylinder 34, the door body 20 is moved to a half-open state in a substantially vertical direction, and then the door body 20 is moved. It can be rotated to switch to the fully open state.

  The double acting first hydraulic cylinder 33 is rotatably attached to the torque arm 32 via a shaft 33a, and the other end shaft 33b is rotatably attached to the switchgear base 40. When the double-acting type first hydraulic cylinder 33 is contracted, the door body 20 is opened, and when the extension is extended, the door body 20 is closed.

The double-acting second hydraulic cylinder 34 is double-acting and can control expansion and contraction. One end of the double-acting type second hydraulic cylinder 34 is rotatably attached to a shaft 34 a provided on the torque arm 32, and the other end is rotatably attached to a shaft 34 b of the door body hanging bracket 21.
The position of the shaft 34b is connected to the upper side of the shaft 32a to which the torque arm 32 is connected. When the double-acting type second hydraulic cylinder 34 is expanded and contracted, the door body 20 can be rotated about the shaft 32a. . Therefore, when the torque arm 32 rotates in the opening direction of the door body 20 and the double-acting type second hydraulic cylinder 34 is extended in cooperation with the operation, the lower end of the door body 20 is pressed against the opening 2a. The body 20 can be moved in a substantially vertical direction. Further, when the door body 20 is swung by extending and contracting the double-acting type second hydraulic cylinder 34 with the shaft 32a as a fulcrum, it is possible to perform a sand removal operation of foreign substances such as sand accumulated on the bottom of the opening 2a. . Accordingly, there is an advantage that the incomplete closing of the door body 20 can be prevented.

  As in the other embodiment of FIG. 8, the opening / closing mechanism 30 is configured such that the double-acting type second hydraulic cylinder 34 is attached to the first torque arm 50 and the torque arm 32, and the connecting link 52 is connected to the second torque arm 51 and the door body. If it is attached to the hanging bracket 21 and a torque arm and a connecting link are used, it is possible to easily change specifications such as the stroke width of the double-acting type second hydraulic cylinder 34 and to save space. When the stroke width is changed, the movement width in the substantially vertical direction of the door body 20 and the width of the sand removal operation can be changed.

Next, the operation of the portal post-less gate opening / closing device 10 according to the present invention will be described with reference to FIGS. 4 to 6 are operations for releasing from the fully closed state.
First, an operation state where the water channel 2 is fully closed as shown in FIG. 3 and the door body 20 of FIG. 4 is driven in a substantially vertical direction will be described. The torque arm 32 has the torque shaft 31 as the center of rotation, the shaft 33a to which the double-acting first hydraulic cylinder 33 is connected is the power point, and the shaft 32a of the door body hanging bracket 21 is the operating point. Rotate clockwise.

As shown in FIG. 4, when the torque arm 32 rotates in the A direction, the door body 20 tries to rotate clockwise about the shaft 32a.
Here, the door body 20 is pressed against the opening 2a in the B direction in the direction in which the double acting second hydraulic cylinder 34 connected to the upper portion of the door suspension bracket 21 by the shaft 34b extends, that is, the shaft 32a.
As a result, while the double-acting type second hydraulic cylinder 34 extends to a predetermined stroke, the door body 20 moves in the C direction (substantially vertical direction), and only the lower part of the opening 2a is in a half-open state. The upper roller 22 and the lower roller 23 provided on the door body 20 move in a substantially vertical direction while being in rolling contact with the guide surface 2b, and assist the smooth movement of the door body 20.
The moving distance in the substantially vertical direction can be arbitrarily controlled by the stroke length of the double-acting second hydraulic cylinder 34.

Second, the operation state from the state of FIG. 4 to FIG. 5 will be described.
After the door body 20 has moved a predetermined distance in a substantially vertical direction, the door body 20 is rotated about the shaft 32a as a fulcrum by contracting the double acting second hydraulic cylinder 34 as shown in FIG. Accordingly, the door body 20 can be opened without greatly rotating the torque arm 32, so that the stroke of the double-acting first hydraulic cylinder 33 can be shortened, and the apparatus can be configured more compactly. .

Third, the operation from the state of FIG. 5 to the fully open state of FIG. 6 will be described.
By further shrinking the double-acting type first hydraulic cylinder 33 and the double-acting type second hydraulic cylinder 34, the full-open state is entered.

  The rotation angle (movement distance) of the torque arm 32 accompanying opening and closing of the door body 20 is such that a double-acting type second hydraulic cylinder 34 is provided to guide the door body as in a conventional gate opening / closing device (eg, Patent Document 2). The rotation angle of the torque arm in the method can be made very small. As a result, the amount of expansion and contraction of the double-acting first hydraulic cylinder 33 is reduced, so that the double-acting first hydraulic cylinder 33 can be reduced in size and space and cost. Further, compared to the conventional guide method, there is an advantage that guide adjustment at the time of installation is unnecessary and maintenance is easy.

  Switching the opening 2a of the gate post-less gate opening / closing device 10 from the fully open state to the fully closed state is closed in the reverse procedure of the operations of FIGS. Since the door body 20 closes the lower part of the opening 2a by a substantially vertical movement, it is possible to prevent floating substances and the like from being sandwiched between the door body 20 and the water channel 2.

  Further, just before the opening 2a is fully closed, as shown in FIG. 7, the double-acting type second hydraulic cylinder 34 is expanded and contracted a plurality of times to swing the door 20 around the shaft 32a as a fulcrum. It is possible to perform sand removal operation of foreign substances such as sand accumulated on the bottom of 2a. Accordingly, there is an advantage that the incomplete closing of the door body 20 can be prevented.

  Although the gateless gate opening and closing device of the present invention has been described by taking the drainage lock gate as an example, the present invention is not limited to this and can also be applied as an opening and closing device for a water channel or a water intake gate.

2 Flow path 2a Opening portion 2b Guide surface 10 Gate pillar-less gate opening / closing device 20 Door body 21 Door body hanging bracket 22 Upper roller 23 Lower roller 30 Opening / closing mechanism 31 Torque shaft 32 Torque arm 32a Shaft 33 Double acting first hydraulic cylinder 33a Shaft 33b Shaft 34 Double-acting type second hydraulic cylinder 34a Shaft 34b Shaft 35 Bearing 40 Switchgear base 50 First torque arm 51 Second torque arm 52 Connection link

Claims (2)

A door body for opening and closing the opening of the flow path;
By switching the opening from a closed state to a substantially half-open state by pulling up the door body linearly along the opening, the opening is changed from a half-open state to a fully-open state by rotating the door body. An opening and closing mechanism to switch,
The opening / closing mechanism is
A rotating torque shaft horizontally provided on the upper surface of the water channel;
A torque arm that is fixed to the torque shaft and rotates together with the torque shaft, and a tip end portion of which is rotatably attached to a door body hanging bracket provided at an upper portion of the door body;
A double acting first hydraulic cylinder having one end rotatably attached to the torque arm and the other end rotatably attached to the upper part of the flow path;
A double-acting type second hydraulic cylinder having one end rotatably attached to the torque arm and the other end rotatably attached to a position above the position where the front end of the torque arm of the door hanging bracket is attached; ,
Have
When the opening is switched from the closed state to the substantially half-open state by the opening / closing mechanism, the torque arm is rotated about the torque axis by the double-acting first hydraulic cylinder and the double-acting second hydraulic pressure By switching the door body into a substantially half-open state by pressing the lower part of the door body against the opening centered on the connecting portion with the torque arm by extending the cylinder,
When the opening is switched from the half-open state to the fully-open state, the door body is formed by rotating the torque arm about the torque axis by the double-acting first hydraulic cylinder and the double-acting second hydraulic cylinder. The gate pillar-less gate opening and closing device characterized in that it is turned to a fully open state by rotating the door. The gate post-less gate opening and closing device according to claim 1,
A gate post-less gate opening and closing device that swings the door body by repeatedly expanding and contracting the double acting second hydraulic cylinder.

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