JP2013002097A - Gate opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gate opening/closing device which is compact, and can surely open and close a flow passage and also open and close a door body without a complicated mechanism nor control.SOLUTION: A gate opening/closing device 10 is provided with: a door body 16; a torque arm 11 which uses a hydraulic cylinder 21 as a driving device which opens and closes the door body 16, and converts linear motion of the hydraulic cylinder 21 into rotational motion; and a torque axis 12 which serves as a center axis of rotation. A stopper link 14 is coupled to the torque arm 11, and a door body metal fixture 15 provided on the door body 16 is coupled to the stopper link 14. A spring link for coupling a predetermined position of the torque arm 11 and a predetermined position of the stopper link 14 to each other is provided as a mechanism for moving the door body 16 in a substantially perpendicular direction. Further, a track of rotational operation of the door body 16 is adjusted by a roller guide 19 and a conversion roller guide 20.

Description

The present invention relates to a 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. 7 (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. 8 (conventional example 2) is a cross-sectional view showing a conventional flap gate. A flap gate 201 shown in FIG. 8 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. 8 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. 8 opens and closes the outlet by the rotation of the gate 210, it is impossible to completely seal the outlet if dust or other foreign matter is caught between the gate 210 and the lower part of the outlet. There is sex.

On the other hand, the over-link gate disclosed in Patent Document 1 controls two types of hydraulic cylinders, and first lifts the door body in a substantially vertical direction by the second hydraulic cylinder, The door is rotated by a hydraulic cylinder to open the water channel. Conversely, when closing the water channel, the door body is rotated by the first hydraulic cylinder so that the water channel is in a semi-closed state, and then the second hydraulic cylinder is used to push the door body against the outlet while pulling it down. Seal the outlet.
As a result, the uplink gate of Patent Document 1 can prevent foreign matters such as dust from being sandwiched between the flap gate of FIG.

  Further, the gate opening and closing device of Patent Document 2 is configured such that when the door body is rotated by chain driving to open and close, the door body moves along two types of guides provided on the gate. The guide is shaped to move the door body in a substantially vertical direction. Moreover, when the door body moves along the first guide, a pull-back device for pulling back the door body is provided so that the door body does not leave the outlet. As a result, the gate opening and closing device of Patent Document 2 can prevent foreign matters such as dust from being sandwiched between the lower part of the outlet that causes a problem in the flap gate of FIG.

Japanese Patent No. 3413598 Patent No. 4092024

  However, since the gate opening / closing device 101 shown in FIG. 7 includes the gate pillar 103, when the gate opening / closing device 101 is used as 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 and closing device 201 shown in FIG. 8 ensures that the gate 210 is closed in an incomplete state when the suspended matter or the like is sandwiched between the gate 210 and the water channel 202, so that the water channel 202 is reliably closed. 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 foreign substances such as dust from being caught, the use of two types of hydraulic cylinders increases the cost, and also controls the two types of hydraulic cylinders. However, although there is a degree of freedom in operation, the control circuit and the hydraulic circuit are complicated, which also contributes to an increase in cost and complexity of maintenance.

  In addition, the gate opening / closing device of Patent Document 2 mechanically realizes a vertical motion and a rotational motion of the door body by using one type of chain drive device and its driving force using a crank mechanism or the like. Adjustment of switching timing etc. becomes complicated, and because of chain drive, it is a drawback of the chain, it is easy to rust, dust may be caught in the chain part, opening and closing timing will shift because the chain extends due to secular change, There were problems such as.

  An object of the present invention is to provide a gate opening and closing device that is compact and can reliably open and close a flow path, and that can open and close a door without complicated mechanisms and control.

  The present invention has been made to solve the above-described problems, and the invention of the gate opening / closing device according to claim 1 is configured to drive a door body that opens and closes a flow path and the door body in a substantially vertical direction. Switching means for switching the flow path from the closed state to the half-open state and tilting the door body to switch the flow path from the half-open state to the full-open state, the switching means including the door body A driving unit for driving, a roller guide for guiding a roller provided in the door body in a substantially vertical direction, a shoulder unit connected from the roller guide and abutting and fixing the roller at one end; A turning roller guide provided with a rotation shaft for rotating at the end, and the drive unit is connected to the torque arm, and a hydraulic cylinder is connected to the torque arm and rotates the torque arm. The above A stopper link having a stopper for adjusting the rotation of the door body, and a spring connected to the stopper link and the torque arm to push the door body back in the flow path direction. It is characterized by including a link.

  According to the present invention, the door body that opens and closes the flow path is driven in a substantially vertical direction, the flow path is switched from the closed state to the half-open state, and the door body is tilted to change the flow path from the half-open state to the fully open state. Therefore, the apparatus can be made compact and the flow path can be opened and closed reliably.

  Further, in order to prevent the door body from leaving the guide surface until the flow path is changed from the closed state to the half-open state, the spring link pushes the door body back in the flow path direction while the torque arm rotates a predetermined rotation angle. As a result, the door body can be driven in a substantially vertical direction, so that it is possible to reliably prevent an accident that the floating material is sandwiched between the gate and the water channel and the gate cannot be closed.

  Furthermore, since the spring link can set the pushing force and stroke of the spring in advance, the door body can be pushed back without using a control circuit or a hydraulic circuit, so that there is an advantage that the configuration of the device is simplified.

  Further, after the roller of the door body is pulled up while being guided in a substantially vertical direction along the roller guide, the door body is brought into contact with and gripped by the shoulder portion of the turning roller guide, and the door body is centered on the rotating shaft of the turning roller guide. By rotating, the rotation angle of the torque arm can be reduced, and the stroke of the hydraulic cylinder can be reduced accordingly. Therefore, the hydraulic cylinder can be reduced in space and cost. It becomes. In addition, there is an advantage that maintenance is easier than the conventional guide method.

The front view of embodiment of the gate opening / closing apparatus which concerns on this invention is shown. The top view of embodiment of the gate opening / closing apparatus which concerns on this invention is shown. The side sectional view of the embodiment of the gate opening and closing device concerning the present invention is shown. It is a figure which shows the operation state of embodiment of the 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 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 opening / closing apparatus which concerns on this invention, and shows a 3rd operation state. 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 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 to 6 are schematic views showing an operation state until the door body of the gate opening / closing device is changed from the fully closed state to the fully open state.

The gate opening / closing device 10 is a device that opens and closes a drainage gate that discharges river water and the like to prevent inflow. The gate opening / closing device 10 uses a door body 16, a hydraulic cylinder 21 as a driving device for opening and closing the door body 16, a torque arm 11 for converting linear motion of the hydraulic cylinder 21 into rotational motion, and a central axis of rotation. A torque shaft 12 is provided. A stopper link 14 is connected to the torque arm 11, and a door body hanging bracket 15 provided on the upper portion of the door body 16 is connected to the stopper link 14.
As a mechanism for moving the door body 16 in a substantially vertical direction, a spring link for connecting a predetermined position of the torque arm 11 and a predetermined position of the stopper link 14 is provided.
Further, the trajectory of the rotation operation of the door body 16 is adjusted by the roller guide 19 and the turning roller guide 20.

  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 10 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 switch base 22 is a basic part for installing the gate switch 10. A bearing 12 a for the torque shaft 12, a hydraulic cylinder 21, a bearing 20 c for the turning roller guide 20, and the like are placed on the switch base 22. The switch base 22 is provided in the upper part of the water channel 2.

  The door body 16 is an opening / closing member that opens and closes the water channel 2. The door body 16 is a plate-like door having a larger area than the opening 2a. On the upper part of the door body 16, a door body hanging bracket 15 is provided. Further, an upper roller 17 and a lower roller 18 are provided on both side surfaces of the door body 16. A shaft hole for being connected to the stopper link 14 via a pin 14 a is formed in the upper part of the door body hanging bracket 15, and the shaft hole position is arranged on the lock box side of the center of gravity of the door body 16. ing. For this reason, the door body 16 is always subjected to a force for closing the lock box around the pin 14a.

  The upper roller 17 and the lower roller 18 are in rolling contact with the guide surface 2b like an automobile tire. During the opening / closing operation, the upper roller 17 is in rolling contact with the roller guide 19 and contacts the shoulder 20b of the turning roller guide 20. Abutted.

The torque arm 11 is a member that drives the door body 16 by a rotating operation. As shown in FIG. 3, the torque arm 11 is formed with a total of three shaft holes for rotatably mounting the torque shaft 12, the hydraulic cylinder 21, the spring link 13, and the stopper link 14.
The hydraulic cylinder 21 is rotatably attached via a pin 13a, and a torque shaft 12 serving as a rotation axis of the torque arm 11 is attached to the upstream side of the water channel 2 with respect to the shaft hole to which the pin 13a is attached. A stopper link 14 is attached via a pin 14a to the downstream side of the water channel 2 with respect to the shaft hole to which the pin 13a is attached.

  The spring link 13 is a link on which a force acts in the extending direction. One end of the rod is rotatably connected to the pin 13a of the torque arm 11, and the other end is rotatably connected to the pin 14b of the stopper link 14. ing. The spring link 13 is a spring link that acts on the stopper link 14 in the direction of closing the door 16 with the pin 14a as a fulcrum, and in the clockwise direction in FIG. Moreover, the spring link 13 is good also as a structure which can also set the stroke of a rod arbitrarily.

The stopper link 14 is rotatably connected to the torque arm 11 by a pin 14a. A shaft hole is formed in the upper part of the pin 14a and is connected to the spring link 13 via the pin 14b. A shaft hole is also formed in the lower portion of the pin 14a, and is connected to the door body hanging bracket 15 via the pin 14c.
The stopper link 14 is provided with a stopper 14d for adjusting the rotation of the door body 16 so that the door body 16 is driven in a substantially vertical direction so as to come into contact with the door body hanging bracket 15.

  The roller guide 19 is used to guide the upper roller 17 to the shoulder portion 20b of the turning roller guide 20 by bringing the upper roller 17 provided on the door body 16 into rolling contact to adjust the opening / closing locus of the door body 16. is there.

The turning roller guide 20 has a rotating shaft 20a at one end rotatably connected to a bearing 20c, and a semi-cylindrical shoulder portion 20b formed at the other end. The shape of the inner surface of the semi-cylindrical portion of the shoulder portion 20b is a semi-cylindrical shape having an inner diameter substantially equal to the outer diameter of the upper roller 17 so that the upper roller 17 provided on the door body 16 contacts.
Further, when the rotation shaft 20a of the turning roller guide 20 is provided on the downstream side and the upper side with respect to the torque shaft 12 of the torque arm 11, as shown in FIG. The distance) is much smaller than that of a door guide method such as a conventional gate opening / closing device (eg, Patent Document 2). As a result, the amount of expansion and contraction of the hydraulic cylinder is reduced, so that the hydraulic cylinder can be reduced in size, space and cost.

Next, the operation of the 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 16 shown in FIG. 4 is driven in a substantially vertical direction will be described. The torque arm 11 rotates about the torque shaft 12 in the direction A (counterclockwise) in FIG. 4 with the pin 13a connected to the hydraulic cylinder 21 as a force point and the pin 14a of the stopper link 14 as the action point. Go.

  As shown in FIG. 4, when the torque arm 11 rotates in the A direction, the door body 16 connected to the stopper link 14 via the door body hanging bracket 15 tends to rotate clockwise about the pin 14a. For this reason, since the lower part of the door body 16 contacts the opening part 2a and the upper part tends to leave | separate, the door body 16 will incline as it is.

Here, the spring link 13 connected to the upper portion of the stopper link 14 pushes the stopper link 14 clockwise around the pin 14a by the force in the direction in which the spring extends, that is, the B direction. For this reason, the stopper 14d provided on the stopper link 14 abuts against the door body hanging bracket 15 and pushes it in a clockwise direction, so that the upper portion of the door body 16 is pushed back to the opening 2a.
As a result, while the spring link 13 extends to a predetermined stroke, the door body 16 is driven in the C direction (substantially vertical direction), and only the lower part of the opening 2a is in a half-open state. The moving distance in the substantially vertical direction can be arbitrarily set by the stroke length of the spring link 13.

Second, the operation state from the state of FIG. 4 to FIG. 5 will be described.
After the door body 16 has moved a predetermined distance in the substantially vertical direction, as shown in FIG. 5, the upper roller 17 provided on the door body 16 moves along the roller guide 19, and the shoulder portion of the turning roller guide 20. 20b.

Third, the operation from the state of FIG. 5 to the fully open state of FIG. 6 will be described.
After the upper roller 17 provided on the door body 16 is fitted into the shoulder 20b of the turning roller guide 20, the torque arm 11 further moves in the direction D (counterclockwise) around the torque shaft 12 as shown in FIG. When rotated, the turning roller guide 20 rotates in the direction E around the rotation shaft 20a in cooperation with the movement, and the door body 16 fitted in the shoulder portion 20b is rotated in an arc shape and is fully opened. It becomes.

  The rotation angle (movement distance) of the torque arm 11 associated with the opening and closing of the door body 16 is such that the turning roller guide 20 rotates about the rotation shaft 20a to open the door body 16, thereby causing a conventional gate opening and closing device (Patent Document 2). The rotation angle of the torque arm in the door guide method such as the above can be made very small. As a result, since the amount of expansion and contraction of the hydraulic cylinder 21 is reduced, the hydraulic cylinder 21 can be reduced in size, space and cost. In addition, compared with the conventional guide method, there is also an advantage that guide adjustment at the time of installation and maintenance are facilitated.

  Switching the opening 2a of the gate opening / closing device 10 from the fully open state to the fully closed state is closed in the reverse procedure of the operations shown in FIGS. Since the door body 16 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 16 and the water channel 2.

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

2 Flow path 2a Opening 2b Guide surface 10 Gate opening / closing device 11 Torque arm 12 Torque shaft 13 Spring link 14 Stopper link 15 Door body hanging bracket 16 Door body 17 Upper roller 18 Lower roller 19 Roller guide 20 Turning roller guide 20a Rotating shaft guide 20b Shoulder 21 Hydraulic cylinder 22 Switch base

Claims (1)

A door that opens and closes the flow path;
Switching means for driving the door body in a substantially vertical direction to switch the flow path from a closed state to a half-open state, and tilting the door body to switch the flow path from a half-open state to a full-open state. ,
The switching means is
A drive unit for driving the door body;
A roller guide for guiding a roller provided in the door body in a substantially vertical direction;
Including a shoulder portion connected to the roller guide for fixing the roller in contact with one end, and a turning roller guide provided with a rotation shaft for rotation at the other end;
The drive unit is
A rotating torque arm;
A hydraulic cylinder coupled to the torque arm for rotating the torque arm;
A stopper link having a stopper for connecting the torque arm and the door body and adjusting the rotation of the door body;
Including a spring link connected to the stopper link and the torque arm for pushing back the door body in the flow path direction;
A gate opening and closing device.

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