JPH0583031U - Miter Gate - Google Patents

Abstract

(57) [Summary] [Purpose] Economically and labor-saving in management, it is possible to open and close automatically depending on the fluctuation of the internal and external water levels. [Configuration] A miter gate that opens and closes the left and right door bodies 11a and 11b in a double-door shape with a rotating hinge 13 as a fulcrum,
Guide rails 12 are installed on the back surfaces of the left and right door bodies 11a and 11b, respectively. The guide rails 12 are installed at line-symmetrical positions so that the guide surfaces 12a and 12b face each other, and the relative gap between the guide surfaces 12a and 12b becomes narrower toward the upper side. A float 14 is provided which is guided by the guide surfaces 12a and 12b of the guide rail 12 and moves up and down according to the water level difference between the inside and outside and the presence or absence of the inside water. The door main bodies 11a and 11b are opened and closed by the vertical movement of the float 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lock room gate of a ship or a fish, and more particularly to a miter gate of a type in which left and right doors are opened and closed like a double door with a rotating hinge as a fulcrum.

[0002]

[Prior Art]

 For example, a miter gate or a slide gate is adopted as the lock room gate, but when the fluctuation of the outside water level is large, the slide gate may be a high lift slide gate 1a as shown in FIG. As shown, it is necessary to use a porous slide gate 1b, which requires a large amount of equipment, and the opening and closing operation of the gate is complicated. In addition, 2 in FIG. 10 shows a winch.

[0003]

[Problems to be solved by the device]

 On the other hand, the miter gate does not have such a drawback, but the opening and closing of the miter gate is mechanically performed by using a hydraulic cylinder, a wire rope or the like.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a miter gate that enables economy and labor saving in management.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the miter gate according to the present invention is a miter gate that opens and closes the left and right doors in a double-opening manner with a rotating hinge as a fulcrum. The guide rails are arranged so that the relative distance between the guide surfaces becomes narrower toward the position and toward the top, and the guide rails are guided according to the water level difference between inside and outside the door and the presence or absence of internal water. It is said that it is equipped with a float that moves up and down and opens and closes the left and right doors.

[0006]

In the miter gate of the present invention having the above-described structure, when water is injected into the back side of the door body, buoyancy acts on the float, and the buoyancy causes the float to be pushed into the guide rail and rise. To do. At this time, as shown in FIG. 3, when the angle between the guide surfaces 12a and 12b of the guide rail 12 and the vertical line is θ, and the buoyancy of the guide surfaces 12a and 12b is F, (F / 2) ・ The force of sin θ acts. Therefore, when the distance between the action point of the force on the guide surfaces 12a and 12b and the rotary hinge 13 is L, the buoyancy F causes the left and right door bodies 11a and 11b to have (F / 2) sin θ · L, respectively. A rotation moment around the rotary hinge 13 acts.

On the other hand, when there is a water level difference between the inside and outside of the left and right door bodies 11a and 11b, the water level difference between the door bodies 11a and 11b is + when the water level on the front side of the door bodies 11a and 11b is high. Due to this water level difference between the inside and outside, a combined moment of the closing moment acting to close the doors 11a and 11b and the resistance moment acting when the doors 11a and 11b are opened is acting.

Therefore, if the combined moment of the rotational moments acting on the left and right door bodies 11a and 11b around the rotary hinge 13 becomes larger than the combined moment of the closing moment and the resistance moment, the float 14 is attached to the guide rail 12. It is guided and goes up, and the doors 11a and 11b are opened. On the contrary, if the combined moment of the rotational moment is smaller than the combined moment of the closing moment and the resistance moment, the door moves from the open state to the closed state, and if the closed state, the state is maintained.

[0009]

【Example】

 Hereinafter, a miter gate according to the present invention will be described based on an embodiment shown in FIGS. FIG. 1 is a view showing a miter gate of the present invention in a closed state. (A) is a rear view, (B) is a view taken along arrow BB in (A), and (C) is CC in (A). FIG. 2 is a cross-sectional view showing the miter gate of the present invention in an open state, (A) to (C) are the same views as (A) to (C) of FIG. 1, and FIG. 3 is a gate opening of the miter gate of the present invention. FIG. 4A to FIG. 8B are schematic views of the operation, FIG. 8A is a plan view, FIG. 8B is a front view of the float and the guide rail portion, and FIG. FIG. 7 is a schematic explanatory view of the opening / closing operation of FIG.

In the drawings, 11a and 11b are left and right door bodies that constitute the miter gate of the present invention, and are configured to be opened and closed by a rotary hinge 13 in a double door shape.

Reference numeral 12 denotes a guide rail which is arranged on the rear surface of the left and right door bodies 11a and 11b at line symmetrical positions so that the respective guide surfaces 12a and 12b face each other. These guide surfaces 12a and 12b are At the lower limit position, as shown in FIG. 1 (C), the bearings face each other in the fully closed state, and the relative spacing becomes narrower upward from the lower limit position, and the planar view gradually becomes a V-shape. As it curves, it is formed so as to face each other in the fully opened state at the upper limit position, as shown in FIG. 2 (C).

Reference numeral 14 denotes a float, and guide rollers 15 are rotatably pivoted on both sides of the float. The entire width including the guide rollers 15 is, as shown in FIG. 1A, both guide surfaces in a fully closed state. The distance is equal to the distance between 12a and 12b, and the lift of the float 14 based on the buoyancy causes the guide rollers 15 to open the door bodies 11a and 11b by the force pushing the guide surfaces 12a and 12b. Reference numeral 16 is also a guide roller rotatably provided on both sides of the float 14, and this guide roller 16 is for maintaining the relative positional relationship between the float 14 and the door bodies 11a and 11b.

The miter gate according to the present invention has the above-mentioned structure. Next, the movement of the float 14 when opening and closing the miter gate will be described with reference to FIGS. 4 to 8.

4 to 8 are views when the miter gate of the present invention is used in the lock room 17, where 18 is a water injection valve and 19 is a drain valve.

FIG. 4 shows a case where the water level inside the lock room 17 is lower than the water level outside the lock room 17, and in this case, the left and right door bodies 11a and 11b are closed. When the water injection valve 18 is opened in this state to inject water into the lock chamber 17, as shown in FIG. 5, the water level difference Δh inside and outside the lock chamber 17 gradually decreases, and the float 14 is submerged and the float 14 floats. Works.

When this buoyancy is F, the angle between the guide surfaces 12a and 12b of the guide rail 12 and the vertical line is θ, and the distance between the action point of the buoyancy on the guide surfaces 12a and 12b and the rotary hinge 13 is L, Due to the buoyancy F acting on the float 14, a rotational moment of (F / 2) · sin θ · L acts on the left and right door bodies 11a and 11b, respectively.

On the other hand, when the water level outside the lock chamber 17 is higher, the left and right door bodies 11a and 11b are provided with a closing motion for closing the left and right door bodies 11a and 11b due to the water level difference Δh. To work.

Therefore, the rotational moment of opening and closing the left and right door bodies 11a and 11b generated by pouring water into the lock room 17 causes the closing moment and the left and right door bodies 11a and 11b to be generated by the water level difference Δh. As shown in FIG. 6, the float 14 begins to move diagonally upward along the guide surfaces 12a and 12b of the guide rail 12 to move to the left and right door bodies 11a if it becomes larger than the combined moment generated when the opening operation is performed.・ Open 11b.

Further, from the state shown in FIG. 6, the drain valve 19 is opened to discharge the water in the lock chamber 17, and the closing moment and the left and right of the lock chamber 17 generated by the water level difference Δh ′ between the inside and the outside of the lock chamber 17 are changed. When the combined moment with the resistance moment generated when the doors 11b and 11b are closed is smaller than the rotational moment due to the buoyancy of the float 14, the float 14 is pushed downward along the guide surfaces 12a and 12b of the guide rail 12. As shown in FIG. 8, the left and right door bodies 11a and 11b are closed.

[0020]

[Effect of the device]

 As described above, the miter gate according to the present invention does not require power to open and close, which is economical and simplifies management. In particular, the mitigation device of the present invention is effective when the fluctuation of the external water level is large. That is, as shown in FIG. 9, by setting the ascending / descending range of the float 14 below the minimum water level of the outside water level, the opening / closing operation can be automatically performed according to the fluctuation of the water level at any position of the outside water level. It will be.

[Brief description of drawings]

FIG. 1 is a view showing a miter gate of the present invention in a closed state,
(A) is a rear view, (B) is a view from BB in FIG.
(C) is CC sectional drawing of (A) figure.

FIG. 2 is a view showing the miter gate of the present invention in an open state,
(A)-(C) is a figure similar to (A)-(C) of FIG.

3A and 3B are explanatory views of a miter gate of the present invention during a gate opening operation, FIG. 3A is a plan view, FIG. 3B is a front view of a float and a guide rail portion, and FIG. 3C is an enlarged view of a main part of FIG. is there.

FIG. 4 is a schematic view of opening / closing operation of the miter gate of the present invention.

FIG. 5 is a schematic explanatory view of opening / closing operation of the miter gate of the present invention.

FIG. 6 is a schematic view of opening / closing operation of the miter gate of the present invention.

FIG. 7 is a schematic view of opening / closing operation of the miter gate of the present invention.

FIG. 8 is a schematic view of opening / closing operation of the miter gate of the present invention.

FIG. 9 is a diagram for explaining the effect of the present invention.

FIG. 10 is an explanatory diagram of a high-lift slide gate.

FIG. 11 is an explanatory diagram of a porous slide gate.

[Explanation of symbols]

 11a ・ 11b Door 12 Guide rail 12a ・ 12b Guide surface 13 Rotating hinge 14 Float

Claims (1)

[Scope of utility model registration request] 1. A miter gate that opens and closes the left and right doors in a double-opening manner with a rotary hinge as a fulcrum. The guide rails are arranged so that the relative distance between the guide surfaces becomes narrower, and the guide rails move up and down to open and close the left and right door bodies depending on the water level difference between the inside and outside of the door and the presence or absence of internal water. A miter gate characterized by having a float.