JPH0734038U - Gate opening / closing mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] Enlarge the opening / closing mechanism by rotating the door by opening and closing the gate by using the propulsion force of the propeller of the propulsion unit installed under the water surface of the door. Instead, it can be opened and closed securely even with a large gate. [Structure] In a gate 2 which is always installed at a place with a water level, and which opens and closes by rotating a door body 3 left and right around a vertical rotation fulcrum 4, around the center of the rotation fulcrum 4 of the door body 3. The propulsion device 5 for generating a rotation moment is provided on the door body 3, and the propellers 5c and 5d of the propulsion device 5 are provided below the water surface at a position apart from the rotation fulcrum 4 of the door body 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an opening / closing mechanism of a gate that is always installed at a place with a water level and rotates left and right with one side end of a door as a fulcrum to open and close. It relates to a gate opening / closing mechanism that is effective in the case of a large gate such as a breakwater gate, for example, by rotating the door using the propulsion force of the machine propeller to open and close the gate. is there.

[0002]

[Prior art]

 Conventionally, in a gate that opens and closes by turning left and right with one side end of a door as a turning fulcrum, the turning fulcrum part is generally linked to a drive motor through a speed reducer, etc. The structure is such that the door is rotated around its pivot point by the driving force of the motor to open and close.

As the gate becomes larger, the door body forming the gate also becomes larger and heavier, and the resistance of water received during the rotation of the door also increases, so that the door rotates. Since the torque becomes large, it is necessary to use a large horsepower drive motor for rotating the door.

[0004]

[Problems to be solved by the device]

 However, as mentioned above, as the gate becomes larger, the turning torque for turning the door to open and close the gate increases due to the weight of the door that makes up the gate and the resistance of water when opening and closing. In order to generate a large turning torque, the drive motor must use a large one with high horsepower, and the power that transmits the driving force from the drive motor to the turning fulcrum. The transmission mechanism is also large, and as a result, the opening / closing mechanism is generally large.

The present invention has been made in view of the above problems to solve the problems, and the purpose thereof is to propel a propeller of a propulsion device provided below the water surface of a door body. (EN) A door opening / closing mechanism that can open / close a gate by rotating the door body by using force to securely open / close even a large gate without making the opening / closing mechanism large. It is in.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is a gate that is always installed at a water level, and that opens and closes by rotating the door body left and right around a vertical rotation fulcrum. The door is provided with a propulsion unit that generates a rotational moment about the center of the pivot, and the propeller of the propulsion unit is provided below the water surface at a position apart from the pivot of the door. is there.

[0007]

[Action]

 The present invention having the above-mentioned structure operates as follows. That is, when the propeller of the door is driven to rotate the propeller of the propeller below the water surface, the propelling force of the propeller of the rotating propeller causes the door to rotate about the center of the pivot point. Due to this rotation moment, the door body is rotated around the rotation fulcrum and acts to open and close the gate.

[0008]

【Example】

 Hereinafter, the present invention will be described more specifically on the basis of the embodiments shown in the drawings. Here, FIG. 1 is a plan view of the gate, FIG. 2 is a front view of the gate, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG.

In the figure, for example, a breakwater 1 is provided on the open ocean side of the port. The breakwater 1 has a doorway 1a through which ships enter and leave. A gate 2 for opening and closing the entrance / exit 1a is provided at the entrance / exit 1a, and a door body 3 constituting the gate 2 is attached to the inside of the entrance / exit 1a and is rotatably attached to one side wall surface 1b of the entrance / exit 1a. It is installed. The doorway 1a of the breakwater 1 is horizontally wide and long, and the door body 3 for opening and closing the doorway 1a is also horizontally long and wide.

The door body 3 is made of a horizontally long and thick rectangular steel plate, and the inside of the door body 3 is hollow. This hollow portion functions as a so-called float and reduces the weight of the door body 3. ing. That is, since most of the door body 3 is submerged below the surface of the water, buoyancy acts on the door body 3, and the buoyancy reduces the own weight of the door body 3 itself. In addition, the resistance due to its own weight is reduced.

The door body 3 attached to the doorway 1a of the breakwater 1 is attached so as to open inside the doorway 1a. The door body 3 opens inwardly about a rotation fulcrum 4 provided on one end side 3a of the wide lateral direction and rotates to open and close the doorway 1a. The rotation fulcrum 4 is rotatably supported at the upper end thereof by an upper support piece 1c mounted on the upper surface of the doorway 1a near the side wall surface 1b. The upper support piece 1c partially extends inside the breakwater 1, and the upper side of the rotation fulcrum 4 is rotatably connected to and supported by the protruding portion.

A lower end side of the rotation fulcrum 4 is rotatably connected to and supported by a lower support board 1 d provided at the bottom of the breakwater 1. The lower support board 1d is located right below the upper support piece 1c inside the breakwater 1. The upper and lower end sides of the rotation fulcrum 4 are rotatably connected and supported by an upper support piece 1c and a lower support board 1d.

On the other end side 3 b of the door body 3, that is, on the opposite side in the left-right lateral direction of the one end side 3 a provided with the rotation fulcrum 4, the door body 3 of the gate 2 is closed when the gate 2 is closed. A fixing pin 1e for fixing the other end 3b is attached. The other side end side 3b of the door body 3 when closed is fixed by the fixing pin 1e to the upper fixing piece 1g that partially protrudes inside the breakwater 1 from the upper surface near the other side wall surface 1f side of the entrance / exit 1a of the breakwater 1. It is like this.

On the door body 3 of the gate 2 attached to the doorway 1 a of the breakwater 1, a propulsion device 5 for rotating the door body 3 by using propulsive force is attached. The propulsion unit 5 includes, for example, a drive unit 5a including an engine and an electric motor, a drive shaft 5b that transmits the drive force from the drive unit 5a, and propellers 5c and 5d that rotate by the drive force transmitted from the drive shaft 5b. ,,.

The propellers 5c and 5d are always attached to locations below the water surface. In this embodiment, the propellers 5c and 5d are attached to the rear parts of the warp-shaped shaft storage cases 5e and 5f. Further, the propellers 5c and 5d are mounted in the through passages 3c and 3d formed near the other end 3b of the door body 3.

The through passages 3c and 3d are formed in a cylindrical shape so as to be parallel to the thickness direction of the door body 3 in a direction orthogonal to the laterally long direction of the door body 3. One end side of each of the through passages 3c and 3d communicates with the harbor inside the breakwater 1, and the other end side communicates with the open ocean outside the breakwater 1.

In this embodiment, two through passages 3c and 3d are formed, an opening propeller 5c is installed in the through passage 3c, and a closing propeller 5d is attached in the through passage 3d. There is. The opening propeller 5c is a propeller that gives a propulsive force to rotate the door body 3 in the direction to open the gate 2, and the closing propeller 5d is a propeller to give a propulsive force to rotate the door body 3 in the direction to close the gate 2. is there.

The through passages 3 c and 3 d formed in the door body 3 are always provided at positions below the water surface, and the through passageways 3 c and 3 d are located as far as possible from the rotation fulcrum 4, that is, the door body 3 It is formed at a position close to the other side end side 3b. By providing the through passages 3c, 3d to which the propellers 5c, 5d are attached at positions as far as possible from the rotation fulcrum 4, a large turning moment can be generated around the center of the rotation fulcrum 4 with a small propulsive force. You can

In this embodiment, the drive unit 5 a, the drive shaft 5 b, the propellers 5 c, 5 d, etc., which compose the propulsion device 5, are all mounted inside the door body 3. For example, the drive unit 5a is attached to a cavity inside the upper portion of the door body 3. The drive unit 5a is provided right above the through passages 3c and 3d, and a drive shaft 5b for transmitting a driving force is vertically mounted between the drive unit 5a and the through passages 3c and 3d.

Next, the operation based on the configuration of the above embodiment will be described below. When the gate 2 that closes the breakwater 1 is opened, the fixing pin 1e that fixes the other end 3b of the door 3 is removed, and the drive unit 5a of the propulsion device 5 is driven to open the propeller for opening. 5c is driven. When the drive unit 5a is driven, the driving force of the drive unit 5a causes the opening propeller 5c to rotate via the drive shaft 5b.

The rotating opening propeller 5c pushes the water in the through passage 3c rearward, that is, toward the outside of the breakwater 1. The rotating propeller 5c pushes the water in the through passage 3c to the outside of the breakwater 1 at the rear, so that the propeller 5c for opening gives a propulsive force to the door body 3 toward the front, that is, the inside of the breakwater 1. It will be. As a result, a force is applied to the door body 3 toward the inside of the front breakwater 1, that is, in the direction of opening the gate 2, and the door body 3 is centered on the rotation fulcrum 4 on one side end 3a thereof. It begins to rotate toward the inside of 1.

Due to the weight of the door body 3 and the resistance of water to the door body 3 that has started to rotate, the door body 3 rotates in the opposite direction around the center of the rotation fulcrum 4 in the direction of closing the door body 3. The resistance rotation moment of works. However, at this time, a rotational moment is generated at the rotation fulcrum 4 in the direction of opening at the rotation fulcrum 4 due to the propulsive force of the opening propeller 5c, and this rotation moment must overcome the resistance resistance moment in the opposite direction. As a result, the door body 3 rotates in the direction to open it. In other words, the door body 3 rotates around the rotation fulcrum 4 toward the inside of the breakwater 1 to open the entrance / exit 1a of the breakwater 1.

The rotating door body 3 rotates about 180 degrees, and when the other side end side 3 b rotates to a position where it abuts on the inner inner wall of the breakwater 1, the rotation of the opening propeller 5 c is stopped. . Then, the completely opened door 3 is fixed to the inner wall of the breakwater 1. As a result, the gate 2 that closes the entrance / exit 1a of the breakwater 1 is opened.

On the other hand, when the doorway 1a of the open breakwater 1 is closed, the door body 3 fixed to the inner wall of the breakwater 1 is unfixed and the drive unit 5a of the propulsion device 5 is driven. Then, the closing propeller 5d is driven. When the driving unit 5a is driven, the driving force of the driving unit 5a causes the closing propeller 5d to rotate via the driving shaft 5b.

The closing propeller 5 d rotates to push the water in the through passage 3 d rearward, that is, toward the inside of the breakwater 1. The rotating closing propeller 5d pushes the water in the through-passageway 3d to the inside of the rear breakwater 1, whereby the closing propeller 5d gives a propulsive force to the door body 3 toward the front, that is, the outside of the breakwater 1. It will be. As a result, a force is applied to the door body 3 toward the outside of the front breakwater 1, that is, in the direction of closing the gate 2, and the door body 3 is centered on the pivotal fulcrum 4 on one side end 3a thereof. Start to rotate toward the outside of 1.

Due to the weight of the door body 3 and the resistance of water to the door body 3 that has started to rotate, the door body 3 rotates in the opposite direction around the center of the rotation fulcrum 4 in the direction of opening the door body 3. The resistance rotation moment of works. However, at this time, a turning moment is generated in the turning fulcrum 4 in the closing direction by the propulsive force of the closing propeller 5d, and this turning moment becomes a resistance turning moment in the opposite direction. By overcoming, the door body 3 rotates in the direction of closing it. That is, the door body 3 rotates around the rotation fulcrum 4 toward the outside of the breakwater 1 and closes the entrance / exit 1a of the breakwater 1.

When the door body 3 is completely opened and rotated by about 180 degrees, and the other side end side 3b is rotated to a position where the other side end side 3b comes into contact with the inner side wall of the side wall surface 1f of the entrance / exit 1a of the breakwater 1. Stop the rotation of the closing propeller 5d. Then, the other end 3b of the door body 3 is fixed to the upper fixing piece 1g by the fixing pin 1e, and the work of closing the doorway 1a of the breakwater 1 is completed.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. For example, in the above-mentioned embodiment, the case where the propeller is divided into the two propellers for opening 5c and the propeller for closing 5d has been described, but the present invention is not limited to this. Alternatively, one propeller may be used for both. Alternatively, the through passages 3c and 3d may not be formed in the door body 3 and the propeller may be attached to the outside of the side edge of the door body 3 so as to be exposed.

[0029]

[Effect of device]

 As is clear from the above description, according to the gate opening / closing mechanism according to the present invention, the gate is always installed at a place with a water level, and the door body is rotated left and right around the vertical rotation fulcrum to open and close. At the gate, a propulsion unit that creates a rotational moment around the center of the pivotal fulcrum of the door is installed on the door, and the propeller of the propulsion unit is placed below the water surface at a position away from the pivotal fulcrum of the door. As a result, when the underwater propulsion unit provided on the door is driven, the propulsive force of the driving propulsion unit causes the door to generate a rotational moment about the center of the rotation fulcrum. Due to the moment, the door body is rotated around the rotation fulcrum, and the gate can be opened and closed.

Moreover, since the position of the propulsion unit increases in proportion to the distance from the rotation fulcrum even when the propulsion force of the propulsion unit is constant, the magnitude of the rotation moment is such that the mounting position of the propulsion unit is set to the rotation fulcrum. Away from the door, a large turning torque necessary for turning a large door can be generated without increasing the propulsion force of the propulsion unit. Therefore, without increasing the size of the opening / closing mechanism, Even a large gate can be opened and closed with certainty.

[Brief description of drawings]

FIG. 1 is a plan view of a gate showing an embodiment of the present invention.

FIG. 2 is a front view of a gate showing an embodiment of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an overall plan view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Breakwater 1a Doorway 1b One side wall surface 1c Upper supporting piece 1d Lower supporting board 1e Fixing pin 1f Other side wall surface 1g Upper fixing piece 2 Gate 3 Door body 3a One side end side 3b Other side end side 3c Through path 3d Through path 4 times Dynamic fulcrum 5 Propulsion device 5a Drive part 5b Drive shaft 5c Open propeller 5d Closing propeller 5e Shaft storage case 5f Shaft storage case

Claims (1)

[Scope of utility model registration request] 1. A gate, which is always installed at a place with a water level and which opens and closes by rotating a door body left and right around a vertical rotation fulcrum, has a rotation moment around the center of the rotation fulcrum of the door body. An opening / closing mechanism for a gate, wherein a propulsion device for generating the above is provided on the door body, and a propeller of the propulsion device is provided below the water surface at a position apart from a pivot fulcrum of the door body.