JPH024723B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to an overturning weir in which a door body is raised and lowered by winding up and unwinding a wire tied to a rope wheel. This is to prevent underwater debris from adhering to the wire.

(Conventional Example) In an overturning weir where the gate body is pivoted on the riverbed and is raised and lowered by a link chain driven by a hydraulic device, this is to prevent dirt from entering the guide groove of the link chain. , Jikko 52-
As disclosed in Japanese Patent No. 36442, a link chain is known in which a large number of closing plates are attached.

(Problems to be Solved by the Invention) However, since this device has a large number of closing plates pivoted in a link shape, it not only has a complicated structure, but also allows dirt to adhere to the pivoting portion. In addition, extremely large loads such as the water pressure acting on the door body and the closing plate are likely to be applied to the closing plate, which may cause damage and deformation, and the undulation of the door body and the smooth opening and closing of the guide groove by the closing plate. There were problems such as not being able to do it.

Incidentally, there is known an overturning weir in which a door body is raised and lowered by winding up and unwinding a wire tied to a rope wheel. This type of overturning weir has an extremely useful advantage of having a simple structure and being able to raise and lower the door body with a small force.
Although this method has been widely used for a long time, it has had a major problem in that underwater debris tends to adhere to the rope wheels and wires, making it difficult to raise and lower the gate. In order to solve this problem, it is conceivable to use some means to prevent dirt from adhering to the rope wheel or wire when the gate body is lowered, but in the conventional method described above, the rope wheel is used as a means for raising and lowering the gate body. This method could not be directly applied to this type of overturning weir that uses wires and wires.

(Means for Solving the Problems) The present invention provides a storage member 4 for storing the rope sheave 3 and the door body raising/lowering operation wire 5 tied to the rope sheave 3, which is arranged along the arcuate trajectory of the rope sheave 3. It is set up. An inlet/outlet portion 1 for the wire 5 is provided at the upper part of the storage member 4.
0 and allows the rotation of the attachment shaft 7 of the rope pulley 3 in the storage member 4.
is formed. Further, a cover member 8 made of an arc-shaped long plate that opens and closes the arc-shaped opening 4' in conjunction with the rope sheave 3 is provided, and the downstream end of the cover member 8 is connected to the rope sheave 3, and the upstream rear end is connected to the rope sheave 3. The part is the free end.

(Function) With this configuration, when the door falls down, the arc-shaped opening 4' of the storage member 4 is closed by the cover member 8, and the rope wheel 3 inside the cover member is closed.
This is to prevent dirt in the water from adhering to the wires 5 and 5. In particular, by connecting the downstream end of the cover member 8 made of an arc-shaped long plate to the rope pulley 3 and making the upstream rear end a free end, the cover member 8 can be attached to the door body 1 or the like. This prevents deformation and damage due to unnecessary loads such as water pressure acting on the door body 1, and enables smooth undulation of the door body 1 and smooth opening and closing of the arc-shaped opening 4' with a small force. .

(Example) FIG. 1 is a side view of an overturning weir, in which the lower end of a door body 1 is rotatably supported by a hinge part 2 fixed to a river bed. Reference numeral 3 denotes a rope wheel installed on the upper side of the door body 1;
It is attached to the tip of a mounting shaft 7 provided on the side (see also Fig. 3). The rope wheel 3 rotates around the hinge portion 2 as the door body 1 rises and falls, and an arcuate storage member 4 for storing the rope wheel 3 is disposed along its arcuate trajectory.
Reference numeral 5 denotes a wire for raising and lowering the door body 1, which is tied to the rope wheel 3. One end of the wire is attached to the fixture 9, and the other end is wound around the hoist wheel 6. As the body 1 rises and falls, the storage member 4 enters and exits through the entrance and exit part 10 formed at the upper part. Reference numeral 8 denotes a cover member made of a single arc-shaped long plate having the same curvature as the storage member 4, and is connected to the attachment shaft 7 of the rope wheel 3, and rotates together with the rope wheel 3. An arcuate opening 4', which will be described later, is opened and closed. The downstream end of the cover member 8 is connected to the mounting shaft 7, and the upstream rear end is a free end. Therefore, the cover member 8 is integrally attached to the rope sheave 3 along the storage member 4. As shown in FIG. 1, the cover member 8 projects toward the upstream side when the door body 1 is in the upright state.

FIG. 2 is a side view of the main part, and FIG. 3 is a cross-sectional view. The storage member 4 has a substantially box-shaped cross section, and the rope wheel 3 and the wire 5 tied thereto are connected to the storage member 4. It is stored in 4. Further, an arcuate opening 4' is formed in the side plate of the storage member 4 to allow rotation of the attachment shaft 7 of the rope pulley 3, and the cover member 8 is provided with this opening 4' when the door body 1 is folded down. ' to prevent underwater debris from entering the storage member 4 and adhering to the rope car 3 and wire 5.

This overturning weir consists of the above structure, and the door body 1
1 and 2, the cover member 8 protrudes upstream and the opening 4' of the storage member 4 is open. When folding the door body 1, the winding wheel 6 is rotated clockwise in FIG. 1 to unwind the wire 5, and the door body 1 is rotated clockwise and folded down. At this time, the rope pulley 3 also rotates within the storage member 4 as the door body 1 falls down, and the cover member 8 also rotates along the opening 4'. After the door body 1 has been completely lowered, the rope car 3
When the wire 5 reaches the lower end of the storage member 4, the opening 4' is completely closed by the cover member 8 (see the chain line in FIG. 2), and the wire 5, which has expanded as the rope pulley 3 rotates, also moves along the chain line in FIG. It is stored in the storage member 4 as shown in FIG. Further, when the wire 5 is wound up, the door body 1 rotates counterclockwise and stands up, and the cover member 8 projects toward the upstream side.

(Effects of the Invention) As explained above, according to the present invention, it is possible to easily and reliably prevent underwater debris from adhering to the rope car 3 and wire 5 when the gate body is collapsed, which was a drawback of this type of overturning weir. In addition, since the structure is simple, the initial cost and running cost are low. Furthermore, the downstream end of the cover member 8 made of an arcuate long plate is connected to the rope wheel 3, and the upstream rear end is connected to the rope wheel 3. Since the end is a free end, it is possible to prevent the cover member 8 from being deformed and damaged due to unnecessary loads such as water pressure acting on the door body 1 and the cover member 8 being applied thereto. The arc-shaped opening 4' can be opened and closed smoothly and reliably.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
The figure is a side view, FIG. 2 is a side view of the main part, and FIG. 3 is a sectional view of the vicinity of the rope wheel. DESCRIPTION OF SYMBOLS 1... Door body, 2... Hinge part, 3... Rope wheel, 4... Storage member, 4'... Arc-shaped opening, 5...
...Wire for gate body raising/lowering operation, 6...Hoisting wheel, 7...
...Mounting shaft, 8...Cover member, 10...Ingress/exit portion.

Claims (1)

[Claims] 1. A rope wheel attached to the side of the door body is tied with a gate body raising/lowering operation wire wound around a hoisting wheel, and the door body is rotated around the hinge section by operating the hoisting wheel. In the overturning weir configured to be raised and lowered, a storage member for storing the rope car and the wire is disposed along the arcuate trajectory of the rope car, and an entrance/exit part for the wire is formed in the upper part of the storage member, and An arcuate opening is formed in the storage member to allow rotation of the attachment shaft of the rope wheel, and a cover member is provided which is an arcuate elongated plate that opens and closes the arcuate opening in conjunction with the rope wheel. An overturning weir, characterized in that the downstream end of the cover member is connected to the rope wheel, and the upstream rear end is a free end.