JP3026061B2 - Water gate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain-driven water gate in which a door for opening and closing a water channel is pulled up through a chain in a water gate installed as a river management facility.

[0002]

2. Description of the Related Art Conventionally, a chain-driven type water gate of this kind is disclosed in JP-A-59-38410 and Japanese Utility Model Laid-Open Publication No. 3-729.
There was one shown in No. 33.

[0003] The invention of JP-A-59-38410 is described
As shown in FIG. 5, a chain 13 is wound around a driving sprocket 12 provided on a pier 11 of a floodgate, and one end of the chain 13 is connected to the door body 14 and the other end is connected to the counterbalance 10. The lifting and lowering of the door body 14 can be easily performed manually.

In Japanese Utility Model Laid-Open Publication No. 3-73933, a driving shaft 16 is provided above an opening 15 of a gate and a driven shaft 17 is provided near an upper edge of the opening 15 as shown in FIG. Sprockets 16a fixed to 16, 17
A chain 18 is looped between 17a and a door 19 for opening and closing the opening 15 is connected to one side of the chain 18.

[0005]

Generally, floodgates used for controlling river flow are often installed in a natural environment such as a mountain area. In such a case, care must be taken not to impair the surrounding scenery. Was desired.

However, Japanese Patent Application Laid-Open No. Sho 59-38410 describes
No. 1 had a problem in that a large counterbalance protruded on the outer surface of the floodgate, and because it moved up and down as the door was raised and lowered, it was unsightly and spoiled the surrounding scenery. In addition, in this sluice gate, a double load is simply applied to the sprocket shaft and pier to suspend the counterbalance of the weight corresponding to the door body.To obtain the necessary strength, However, there is a problem that an increase in construction cost is unavoidable.

In Japanese Utility Model Application Laid-Open No. 3-73933, a driven shaft must be provided near the upper edge of the opening separately from the drive shaft, which complicates the structure and raises construction costs. There was also a problem that the height of the opening was limited by the shaft. Moreover, in this configuration, the door cannot be suspended vertically by the chain, and the door is connected to the side of the chain, so excessive force acts on the chain and its driving parts, and the operation is smooth. There was also a problem that it was not performed or a failure was easily caused.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a chain-driven floodgate with smooth operation and high reliability without increasing the construction cost and without compromising the scenery.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a door, a structural frame-shaped pier that holds the door in a vertically movable manner, and a drive installed on the pier. A chain-driven sluice gate comprising a device and a chain wound around a sprocket of the driving device and suspending and supporting the door body, and driving the door body up and down through the chain. On one lower side of the sprocket around which the chain is wound, a chain recovery unit consisting of a pair of parallel hanging members having a gap slightly wider than the width of the chain,
In addition to being provided with a downward inclination toward the outside, at a predetermined position of the chain, a hanging pin supported by the hanging member and hanging and supporting the chain is outwardly projected. is there.

[0010]

1 is a front view of a floodgate 1 according to the present invention, FIG. 2 is a partially cutaway side view thereof, FIG. 3 is an enlarged perspective view of a main part of FIG. 2, and FIG. 4 is a main part of FIG. It is an enlarged plan view. The floodgate 1 is a so-called two-stage gate type floodgate in which the amount of water flowing over is adjusted by individually driving up and down two door bodies 3 provided in an overlapping manner. As shown in the drawing, the water gate 1 of the present invention mounts the door body 3 on a pier 2 having a structural frame like a conventional water gate so that the door body 3 can move up and down, and provides a driving device 4 for the door body 3 on the pier 2. A chain 6 connected to the door 3 is wound around a sprocket 5 of the driving device 4.

Here, in the sluice 1 of the present invention, as shown in FIG. 3, a recovery part 8 of the chain 6 is provided on one side below the sprocket 5 (the side where the door body 3 is not located below).
The collecting portion 8 has a pair of hanging members 8a and 8b arranged in parallel with a gap slightly larger than the width of the chain, and its outer side (the left-right direction in FIG. 3) is inclined downward. One end is connected to the door 3, and the other end of the chain 6 wrapped around the sprocket 5 is connected to the outer end of the collection unit 8.

The chain 6 for suspending the door 3 is not different from a normal chain in which the individual pieces 6a are connected by pins 6b, but in the present invention, the pins 6 for connecting the pieces 6a are used.
b is long at a predetermined position, and is protruded outward as a support pin 7.

The sluice gate 1 of the present invention thus constructed operates the driving device 4 to rotate the sprocket 5 in one direction in the same manner as a conventional sluice gate, thereby turning the chain 6 wound around the sprocket 5 on. By pulling up the door body 3 connected to the chain 6 through the above, and by reversing the rotation direction of the sprocket 5, the door body 3 suspended and supported by the chain 6 is lowered by its own weight. At this time, in the sluice 1 of the present invention, the chain 6 wound up by the sprocket 5 has a low volume and is automatically stored in the collecting section 8 provided on one side below the sprocket 5.

Next, a chain collecting section 8 which is an essential part of the present invention.
Will be described in detail with reference to an enlarged perspective view of a main part in FIG.

First, when the right driving device 4 is operated to rotate the sprocket 5 clockwise, the chain 6 wound around the sprocket 5 is wound up, and the lower end of the chain 6 is connected to the door. The body 3 is raised. At this time, one side of the sprocket 5 (left side in FIG. 3)
The chain 6 wound up from below hangs down on the other side of the sprocket 5 and enters between the pair of hanging members 8a, 8b of the collecting unit 8. At this time, since the hanging pin 7 is provided at a predetermined position of the chain 6 so as to protrude outward, when the top 6 a provided with the hanging pin 7 comes on the collecting portion 8,
The support pins 7 are left and right (front and rear directions in the drawing) support members 8a, 8
b and cannot contact the upper surfaces of the support members 8a and 8b. Therefore, the chain 6 hangs down in a U-shape at the collecting section 8. In this way, the chain 6 hangs down sequentially in a U-shape at the position where the hanging pin 7 is provided, and is compactly stored in a zigzag folded shape.
At this time, since the outer side of the collecting unit 8 is inclined downward, the hanging pins 7 abutting on the upper surfaces of the hanging members 8a and 8b are sequentially moved.
It slides outside the collection unit 8 (to the right in the figure) and does not hinder the collection operation of the subsequent chain 6.

When the sprocket 5 is rotated in the reverse direction, the door 3 suspended by the chain 6 descends by its own weight.
At this time, the chain 6 housed in the collecting section 8 is sequentially wound around the sprocket 5 from the left, and the chain 6 is suspended by the hanging pins 7 which are in contact with the hanging members 8a and 8b. The winding operation is not hindered at all.

In this manner, in the floodgate 1 of the present invention, the chain 6 connected to the door 3 is automatically folded low and pulled out of this state, and the door 3 is raised and lowered. Although the above description has been made on the door 3 inside the two-stage gate, the operation of the door 3 on the outside is exactly the same. In the embodiment, the two doors 3,
Although the two-stage gate type floodgate 1 provided with the superposed 3 is exemplified, in the present invention, it is sufficient that the chain 6 hanging the door 3 is folded and stored in the collection unit 8.
Needless to say, the door body 3 may be a single ordinary floodgate.

In the above description, the pin 6b for connecting the frame 6a of the chain 6 is also used as the hanging pin 7, but this hanging pin 7 is a pair of the hanging members 8a,
What is necessary is just to protrude outside the chain 6 so that it cannot pass between 8b, and it may be directly erected outside the top 6a.

[0019]

As described above, in the sluice gate of the present invention,
The chain that drives the door up and down is compactly folded and stored under the sprocket, so that an unsightly counterbalance or the like is not exposed outside the pier, and the outer shape can be formed simply. Therefore, the construction is easy, and the surrounding scenery is not spoiled so much.

Further, since the door is suspended vertically by a chain, its operation is smooth, and there is little possibility of failure.
The reliability of floodgates used in emergencies such as floods is increased.

[Brief description of the drawings]

FIG. 1 is a front view of a floodgate according to the present invention.

FIG. 2 is a partially cutaway side view of FIG.

FIG. 3 is an enlarged perspective view of a main part of FIG. 2;

FIG. 4 is an enlarged plan view of a main part of FIG. 1;

FIG. 5 is a simplified side view of a conventional example.

FIG. 6 is a simplified front view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sluice gate 2 Pier 3 Door body 4 Drive device 5 Sprocket 6 Chain 7 Hanging pin 8 Collection part 8a, 8b Hanging member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02B 7/20 E02B ⁷ /26-7/36 101

Claims (1)

(57) [Claims] 1. A door, a structural frame-shaped pier that holds the door so as to be able to move up and down, a driving device installed on the peer, and the door that is wound around a sprocket of the driving device. A chain-driven sluice gate having a hanging chain and the door body being driven up and down via the chain, wherein a sprocket around which the door-body driving chain is wound is directed outward at one side below. A collection portion for the chain that is inclined downward and is provided with a pair of parallel hanging members having a gap slightly larger than the width of the chain, and is supported at a predetermined position of the chain by the hanging member. A sluice gate, wherein a hanging pin for hanging and hanging the chain is protruded outward.