JP2007146609A - Gate device, and method of replacing main watertight member of gate device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely replace a watertight member without separately installing a temporary gate for maintenance. <P>SOLUTION: A derricking gate device installed in a river or a waterway comprises a main bottom part watertight member 12a installed upstream of a rotating shaft part 11a of a door body 11 constituting the derricking gate device, and a main side part watertight member 13a installed upstream of a side part 11b of the door body 11 so that both watertight members can be replaced from the upstream side. When replacing the main bottom part watertight member 12a and the main side part watertight member 13a, replacement is performed in a state of installing an auxiliary bottom part watertight member 12b and an auxiliary side part watertight member 13b downstream of the main bottom part watertight member 12a and the main side part water tight member 13a from the downstream side. Since watertightness is kept by the auxiliary watertight members, a water stream is not generated even if the main watertight members are removed, and underwater replacement work of the main watertight members can be performed without being attended with danger. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an undulating gate device that is installed in, for example, a river and is used for water intake such as agricultural water, and a method for replacing a main watertight member of the gate device.

For example, in order to prevent backflow and water leakage, the undulating gate device is provided with a watertight member on the rotating shaft portion and the side portion of the door body as disclosed in Patent Document 1. FIG. 5 is an enlarged view of the vicinity of the watertight member of the undulating gate device, where (a) shows the watertight member 2a installed on the rotating shaft 1a of the door body 1, and (b) is a cross section taken along the line BB of FIG. FIG. 4C is a cross-sectional view taken along the line CC of FIG. 2A, and shows watertight members 2b and 2c installed on the rotating shaft and the side, respectively.
JP-A-11-117271

Moreover, in the roller gate, as disclosed in Patent Document 2, a watertight member is provided between the door body and the watertight wall. FIG. 6 is an enlarged view of the vicinity of the watertight member 4 installed on the door body 3 of the roller gate. FIG. 6A is a plan view, and FIG. 6B is an enlarged view of the watertight member 4.
Japanese Patent No. 3484654

  Since the watertight member of the gate device as described above is worn and deteriorated with use, it is necessary to replace it periodically.

  However, in the state where the watertight member is submerged at the time of replacement, when the watertight member is removed, a water flow is generated from the upstream side to the downstream side. Therefore, it is dangerous to replace the watertight member with the door submerged, and a separate temporary gate for maintenance is installed to replace the watertight member. However, there is a problem in terms of cost.

  The problem to be solved by the present invention is that in the conventional gate device, there is a danger when replacing the watertight member, and therefore a temporary gate for maintenance must be separately installed.

The gate device of the present invention is
In order to be able to replace the watertight member safely without installing a temporary gate for maintenance separately,
In gate devices installed in rivers and waterways,
On the upstream side of the door body constituting the gate device, a main watertight member is installed so that it can be replaced from the upstream side,
At least when the main watertight member is replaced, the main feature is that a sub watertight member that can be attached and detached from the downstream side can be installed on the downstream side of the main watertight member.

When the gate device is an undulating gate device, the gate device of the present invention is
A main bottom watertight member can be exchanged from the upstream side of the rotating shaft portion of the door body constituting the undulating gate device, and a main side watertight member can be exchanged from the upstream side of the door body side portion. Installed as
At least when replacing the main water-tight member, a sub-bottom water-tight member and a sub-side water-tight member that can be attached and detached from the downstream side can be installed on the downstream side of the main bottom water-tight member and the main side water-tight member, respectively. It will be configured.

  In the gate device of the present invention, “at least when the main watertight member is replaced” may be configured so that the auxiliary watertight member can be installed when the main watertight member is replaced, except when the main watertight member is replaced. In this case, it means that the auxiliary watertight member is not necessarily installed.

When replacing the main watertight member of the gate device of the present invention,
What is necessary is just to replace | exchange the said main watertight member in the state which installed the said secondary watertight member in the downstream of the said main watertight member. This is the main watertight member replacement method for the gate device of the present invention.

  In the main water-tight member replacement method of the gate device of the present invention, “in the installed state” means that the sub-water-tight member may be installed when the main water-tight member is replaced. This means that the auxiliary watertight member is not necessarily installed.

  In the present invention, since the watertightness is maintained by the auxiliary watertight member, no water flow is generated even if the main watertight member is removed, and the replacement work of the main watertight member in water can be performed without danger. Therefore, it is not necessary to install a temporary gate for maintenance, and the time and cost required for replacing the main watertight member can be reduced.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to FIGS.
1 and 2 are schematic diagrams for explaining a first example of the present invention, and FIGS. 3 and 4 are schematic diagrams for explaining a second example of the present invention.

  FIG. 1 and FIG. 2 are views showing the undulating gate device of the present invention, and 11 is a door body having a buoyancy sufficient to lift itself. The structure for providing the door body 11 with buoyancy is not particularly limited. For example, a structure in which buoyancy is obtained at the pipe portion by forming the door body 11 with a pipe and a plate material or the like is employed.

  The door body 11 is configured such that the rotation shaft portion 11a on the base end side is pivotally supported on a base B provided at the bottom of the port, for example, by a bearing such as a slide bearing or a roller bearing, so that the rotation shaft portion The front end side of the door body 11 is undulated with 11a as a fulcrum.

  Further, the undulating gate device may be configured to forcibly undulate with a hydraulic cylinder.

  By the way, in the undulating gate device as described above, a watertight member is provided on the rotating shaft portion 11a and the side portion 11b of the door body 11 in order to prevent backflow and water leakage.

In the present invention, the watertight member is configured to be installed at two locations on the upstream side and the downstream side for each of the rotating shaft portion 11a and the side portion 11b.
Of these, the main bottom watertight member 12a and the main side watertight member 13a installed on the upstream side have the same functions as the conventional bottom watertight member and side watertight member. Accordingly, the main bottom watertight member 12a and the main side watertight member 13a are made of, for example, rubber having the same high watertightness as the conventional bottom watertight member and side watertight member.

  However, in the present invention, the main bottom watertight member 12a and the main side watertight member 13a can be exchanged from the upstream side at least at the time of exchanging them because a watertight member described later is also installed on the downstream side. It is installed as follows.

  12b is a sub-bottom watertight member, and 13b is a sub-side watertight member. These prevent the occurrence of water flow from the upstream side toward the downstream side when replacing the main bottom watertight member 12a and the main side watertight member 13a, and in order to perform the replacement work safely, It is installed on the downstream side of the main bottom watertight member 12a and the main side watertight member 13a, respectively.

Accordingly, the sub-bottom watertight member 12b and the sub-side watertight member 13b are configured to be detachable from the downstream side. Further, these sub-bottom water-tight members 12b and sub-side water-tight members 13b do not have to be completely water-tight as long as the above replacement work can be performed safely, so that the water-tightness may not be high, and the rubber In addition, resin, metal, etc. can be used.
In addition, 14 in FIG. 1 shows the watertight member of the rotating shaft part 11a.

  In the undulating gate device of the present invention having the above-described configuration, when replacing the main bottom watertight member 12a and the main side watertight member 13a, the subbottom watertight member 12b, the subside watertight member 13b, and the watertight member 14 of the rotating shaft portion 11a. Thus, the water tightness is maintained (thick line portion in FIG. 2A) and no water flow is generated. Therefore, the main bottom watertight member 12a and the main side watertight member 13a may be removed and replaced from the upstream side.

  In addition, when replacing the watertight member 14 of the rotating shaft portion 11a, watertightness is maintained by the main bottom watertight member 12a and the main side watertight member 13a (thick line portion in FIG. 2 (b)), and no water flow is generated. The watertight member 14 may be removed and replaced.

  These sub-bottom water-tight members 12b and sub-side water-tight members 13b are installed only when the main bottom water-tight member 12a and the main side water-tight member 13a are replaced as shown in FIG. You may do it. In this case, needless to say, prior to the replacement of the main bottom watertight member 12a and the main side watertight member 13a, the subbottom watertight member 12b and the subside watertight member 13b are installed from the downstream side.

The gate device of the present invention is not limited to the undulating gate device shown in FIG. 1, but can also be applied to a roller gate device as shown in FIG.
In the case of the roller gate device as shown in FIG. 3, the main watertight member 22 a and the auxiliary watertight member 22 b are extended in the height direction of the door body 21 at both the upstream and downstream edges 21 a of the door body 21. And install.

  Also in this case, the upstream main watertight member 22a is installed so as to be exchangeable from the upstream side, and the downstream secondary watertight member 22b is exchanged from the downstream side. Further, the main watertight member 22a is made of, for example, rubber having high watertightness, and the secondary watertight member 22b may not be high in watertightness, so that resin, metal, etc. can be used in addition to rubber. It is the same. Furthermore, the sub-watertight member 22b may be installed only when the main watertight member 22a is replaced, even if it is not always installed.

The present invention is not limited to the above examples, and it is needless to say that the embodiments may be appropriately changed within the scope of the technical idea described in each claim.
For example, in the case of the roller gate device, the upstream side or the downstream side edge 21a as shown in FIG. 4 may be used instead of the upstream side and the downstream side edge 21a as shown in FIG. For example, the main watertight member 22a and the subwatertight member 22b may be installed on the downstream side.

  The gate device of the present invention can be installed not only in rivers and waterways for water intake such as agricultural water, but also in harbors as a countermeasure against tsunamis and storm surges.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic explaining the 1st example of this invention applied to the undulating gate apparatus, (a) is sectional drawing seen from the side surface in order to demonstrate a bottom part watertight part, (b) demonstrates a side part watertight part It is sectional drawing seen from the arrow BB direction of (a) figure in order to do. It is the figure which showed the watertight line at the time of watertight member replacement | exchange, (a) is a watertight line when exchanging a main bottom part watertight member and a main side watertight member, (b) is watertight when exchanging a rotating shaft part watertight member. It is the figure which showed the line. It is the schematic explaining the 2nd example of the present invention applied to a roller gate device, (a) is a figure seen from the plane, (b) is an expansion explanatory view of the watertight part installed in the edge part of the upstream, c) is an enlarged explanatory view of a watertight portion installed at a downstream edge portion. It is a figure explaining the other example of the 2nd example of this invention. It is an enlarged view near the watertight member of the undulating gate device, (a) is a watertight member installed on the rotating shaft portion of the door body, (b) is a cross-sectional view along the line BB in (a), (c) is (A) It is the figure which showed CC sectional drawing of a figure. It is the enlarged view of the watertight member vicinity installed in the door body of a roller gate, (a) is the figure seen from the plane, (b) is an enlarged view of a watertight member.

Explanation of symbols

11, 21 Door 11a Rotating shaft 11b Side 12a Main bottom watertight member 12b Subbottom watertight member 13a Main side watertight member 13b Subside watertight member 21a Edge 22a Main watertight member 22b Subwatertight member

Claims (3)

In gate devices installed in rivers and waterways,
On the upstream side of the door body constituting the gate device, a main watertight member is installed so that it can be replaced from the upstream side,
A gate device characterized in that a sub-watertight member that can be attached and detached from the downstream side can be installed on the downstream side of the main watertight member at least when the main watertight member is replaced. In undulating gate devices installed in rivers and waterways,
The main watertight member is a main bottom watertight member installed on the rotating shaft portion of the door body, and a main side watertight member installed on the door body side portion,
2. The gate according to claim 1, wherein the secondary watertight member is a secondary bottom watertight member and a secondary side watertight member that can be installed downstream of the primary bottom watertight member and the primary side watertight member, respectively. apparatus. A method for replacing a main watertight member of a gate device according to claim 1 or 2,
A main watertight member replacement method for a gate device, wherein the main watertight member is replaced in a state where the sub watertight member is installed on the downstream side of the main watertight member.

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