JP5876428B2 - Roller gate - Google Patents

Description

  The present invention relates to a roller gate, and more particularly to a roller gate effective for a spillway gate, a water intake gate, etc. of a hydroelectric power plant.

  Roller gates used as spillway gates and intake gates for hydroelectric power stations are equipped with rollers on both sides of the door body, guided by roller guides on both side walls of the spillway and intake ports, and the operation of the winch By moving the wire rope attached to the door body up and down, the door body is moved up and down to open and close openings such as a flood outlet and a water intake.

  In this case, the door body includes a reinforcing girder configured by combining a plurality of main girders made of steel and vertical girder vertically and horizontally, and a skin plate made of steel plate attached to the front side of the reinforcing girder. Rollers are respectively attached to the outer sides of the end stringers, and wire ropes fed from the winch are connected to the upper ends of the main girders at the upper end (see, for example, Patent Document 1).

  By the way, in the roller gate configured as described above, the door body is lowered by its own weight by paying out the wire rope from the winch. However, the friction force between the roller and the roller guide acts on the skin plate. The door body may not be able to be lowered smoothly due to water pressure or the like.

  For this reason, ballast made of concrete, sand, etc. is placed on the upper part of the main girder of the reinforcing girder (excluding the main girder at the upper end) to increase the weight of the door body, but the upper surface of the main girder is covered with ballast. Therefore, maintenance of the main girder cannot be performed.

Utility Model Registration No. 3168348

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a roller gate capable of increasing the weight of a door body without affecting the maintenance of a main girder or the like. .

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a roller gate that opens and closes an opening such as a flood outlet and a water intake of a hydroelectric power plant, and is provided on a skin plate that receives water pressure and a surface opposite to the surface that receives the water pressure of the skin plate. , Comprising a reinforcing girder composed of a main girder and a vertical girder combined vertically and horizontally, and a door body that can be raised and lowered by its own weight at the opening of the flood outlet, intake port, etc., and left and right ends of the door body A roller provided rotatably, and provided on both side walls forming the opening, and a roller guide for rotatably guiding the roller , and at least one weight plate at a plurality of positions above the main girder The weight body to be mounted is detachably mounted.

  According to the roller gate of the present invention, the weight of the door body can be increased by placing the weight body made of at least one weight plate on the upper part of the main girder of the door body. The door body can be smoothly lowered without being affected by the frictional force between them, the water pressure acting on the skin plate, or the like. In the maintenance of the main beam and the like, the main beam and the like can be maintained by removing the weight plate of the weight body from the upper part of the main beam.

  Moreover, in this invention, it is good also as the support shaft which supports the said weight body in the several places of the upper part of the said main girder.

  According to the roller gate of the present invention, it is possible to adjust the position where the weight body on the upper part of the main girder is provided, so that the center of gravity of the door body is located upstream, downstream, or in the width direction of the river. In case of deviation, the position of the center of gravity of the door body can be restored by adjusting the position of the weight body provided on the upper part of the main girder according to the deviation, the door body is upstream of the river, It is possible to prevent the vertical movement of the door body from being hindered by being inclined in the downstream side or the width direction of the river.

  Further, in the present invention, the support shafts are provided at a plurality of locations at predetermined intervals in the longitudinal direction of the main beam and at least in one row in the width direction of the main beam on the main beam. It is good.

  According to the roller gate of the present invention, the position of the center of gravity of the door body is adjusted by selecting the support shaft that supports the weight body from the plurality of support shafts and attaching the weight body to the position of the selected support shaft. be able to.

  Further, in the present invention, the weight plate is provided with a notch or an insertion hole through which the support shaft is inserted, and the weight plate is inserted into the notch or the insertion hole so that the weight plate is inserted into the weight plate. It is good also as being supported in the state mounted in the upper part of the main girder.

  According to the roller gate of the present invention, the weight plate is supported in a state of being placed on the upper portion of the main beam by the support shaft by inserting the support shaft into the notch or the insertion hole of the weight plate. .

  In the present invention, the weight plate may be a metal plate.

  According to the roller gate of the present invention, by configuring the weight plate with a metal plate, a weight equivalent to that of ballast such as concrete or sand can be added to the door body in a volume smaller than that of ballast such as concrete or sand.

  As described above, according to the roller gate of the present invention, the weight of the door body can be increased to such an extent that the lowering is not hindered by frictional force, water pressure, or the like without affecting the maintenance of the main beam and the like.

It is the schematic which showed one Embodiment of the roller gate by this invention. It is sectional drawing seen along the AA line of FIG. It is the schematic which showed the adjustment method of the gravity center position of a roller gate. It is the schematic which showed the adjustment method of the gravity center position of a roller gate.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show an embodiment of a roller gate according to the present invention. The roller gate 1 of the present embodiment can be applied to a spillway gate, a water intake gate, etc. of a hydroelectric power plant, and without affecting the maintenance of the main girder 4 etc. of the roller gate 1, It is configured so that the weight of the door body 2 can be adjusted.

  The roller gate 1 according to the present embodiment includes a skin plate 7 and a door body including a reinforcing girder 3 formed by combining a plurality of main girders 4 and vertical girder 6 vertically and horizontally, which are provided on the back side of the skin plate 7. 2, rollers 8 that are rotatably provided on the outer sides of the vertical beams 6 at the left and right ends of the reinforcing beam 3, weights 13 that are detachably attached to the main beam 4, and both side walls 16 such as a flood outlet and a water intake. And a roller guide 9 that rotatably guides the roller 8 and a winch (not shown) that raises and lowers the door body 2.

  The skin plate 7 is made of a steel plate, and the main girder 4 and the vertical girder 6 of the reinforcing girder 3 formed of a steel material such as H-shaped steel are formed on the back side of the skin plate 7 in a lattice shape or the like. It is provided in a state where it is combined vertically and horizontally, and receives the water pressure from the upstream side of the river on the front side of the skin plate 7.

  Support shafts 12 are vertically provided at a plurality of positions on the upper surface 5 a of the web 5 of each main girder 4 (excluding the upper main girder 4) of the reinforcing girder 3, and the web of each main girder 4 is supported by these support shafts 12. The weight body 13 placed on the upper surface 5a of the main body 5 is supported, and the weight body 13 is prevented from falling off from the upper surface 5a of the web 5 of each main girder 4.

  The support shaft 12 is composed of a bar screw or the like, and is fixed to the upper part 5a of the web 5 of each main girder 4 by means such as welding. The support shaft 12 may be fixed directly to the upper surface 5a of the web 5 of each main girder 4, or may be fixed using an existing drain hole provided in the web 5, or the web 5 A hole through which the support shaft 12 is inserted may be provided and fixed using this hole.

  The support shafts 12 are provided on the upper surface 5 a of the web 5 of each main girder 4 at a plurality of locations at predetermined intervals in the longitudinal direction and in a plurality of rows in the width direction of the web 5. Thus, by arranging the support shaft 12 on the upper surface 5a of the web 5 of each main girder 4, the adjustment range of the position of the center of gravity of the door body 2 by the weight body 13 can be widened.

  In the present embodiment, three support shafts 12 are provided in two rows (6 in total) at the center of the upper surface 5a of the web 5 of the second and third main girders 4 from the top. Support shafts 12 may be provided in a similar arrangement on the upper surface 5a of the web 5 of the fourth and fifth main girders 4.

  The weight body 13 is configured by stacking a plurality of weight plates 14 made of steel plates, and is configured to be placed at positions corresponding to the support shafts 12 on the upper surface 5a of the web 5 of each main girder 4. ing. The weight plate 14 has a rectangular plate shape, and is provided with a notch 15 extending from the center to one side, and the support shafts 12 of the upper surface 5a of the web 5 of each main girder 4 are inserted into the notch 15. By doing so, the main girder 4 is supported in a state of being placed on the upper surface 5 a of the web 5.

  By configuring the weight plate 14 of the weight body 13 with a steel plate, the specific gravity can be made larger than the ballast made of concrete, sand, etc., so that the ballast of concrete, sand, etc. has a smaller volume than the ballast of concrete, sand, etc. Similar weight can be obtained.

  The weight plate 14 is not limited to a rectangular plate shape, and may be formed in other shapes such as a disk shape. Further, an insertion hole may be provided in the center of the weight plate 14 instead of the notch 15, and the support shaft 12 may be inserted into the insertion hole. The weight plate 14 is not limited to a steel plate, and may be formed of a metal having a large specific gravity such as copper or lead.

  A wire rope 11 fed from a winch (not shown) is connected to the main girder 4 at the upper end of the reinforcing girder 3, and the door plate 2 is moved up and down by operating the winch and moving the wire rope 11 up and down. The door plate 2 can open and close the openings 17 such as a flood outlet and a water intake.

  From a predetermined number of weight plates 14 at positions corresponding to the support shafts 12 on the upper surface 5a of the web 5 of each main beam 4 of the door 2 of the roller gate 1 of the present embodiment configured as described above. Each weight body 13 is placed, and each support shaft 12 is inserted into the notch 15 of each weight plate 14 so that the notch 15 of each weight plate 14 of each weight body 13 faces the skin plate 7 side. Thus, each weight plate 14 of each weight body 13 is supported in a state where it is placed on the upper surface 5 a of the web 5 of each main girder 4. In this case, the weight body 13 is fixed by screwing and tightening a nut (not shown) to a portion of the support shaft 12 protruding upward from the weight plate 14 at the upper end of the weight body 13. Also good.

  Thereby, since the weight of the weight body 13 can be added to the dead weight of the door body 2 and the weight of the door body 2 can be increased, when the door body 2 is lowered and the openings 17 such as the flood outlet and the intake port are closed. The door body 2 can be smoothly lowered without being affected by the frictional force between the roller 8 and the roller guide 9, the water pressure from the upstream side of the river acting on the front surface of the skin plate 7, and the like.

  Further, during maintenance of the main girder 4 and the like of the door body 2, each main girder 4 is removed by removing the weight body 13 from the upper surface 5 a of the web 5 of each main girder 4 with the door body 2 raised. Since the upper surface 5a of the web 5 can be exposed, the maintenance and the like of each main girder 4 can be performed.

Also, as shown in FIG. 3, when the center of gravity of the door body 2 is shifted to the upstream side (Y1 direction) of the river, the weight body 13 is placed on the front side of the web 5 of each main girder 4. By adding weight to the front side of the door 2, the center of gravity shifted to the upstream side (Y1 direction) of the river can be moved to the downstream side (Y2 direction) of the river. It is possible to prevent the vertical movement of the door body 2 from becoming slanted toward the upstream side (Y1 direction), and to smoothly move the door body 2 up and down.
In addition, in FIG. 3, illustration of the back side support shaft 12 is abbreviate | omitted.

As shown in FIG. 4, when the center of gravity of the door body 2 is shifted to the downstream side (Y2 direction) of the river, the weight body 13 is placed on the back side of the web 5 of each main girder 4. By adding weight to the back side of the door body 2, the center of gravity shifted to the downstream side (Y2 direction) of the river can be moved to the upstream side (Y1 direction) of the river. It is possible to prevent the vertical movement of the door body 2 from being slanted toward the downstream side (Y2 direction) and to smoothly move the door body 2 up and down.
In FIG. 4, illustration of the support shaft 12 on the near side is omitted.

  Although not shown, when the center of gravity of the door body 2 is shifted in the width direction of the river, the weight of the weight body 13 in each row of the web 5 of each main girder 4 is adjusted to be different on the left and right. Thus, the center of gravity of the door body 2 can be moved in a direction opposite to the direction in which the door body 2 is displaced. Therefore, it is possible to prevent the door body 2 from being inclined in the river width direction and the vertical movement of the door body 2 from becoming dull. 2 can be smoothly moved up and down.

  In the roller gate 1 of the present embodiment configured as described above, since the weight body 13 is detachably mounted on the upper surface 5a of the web 5 of each main beam 4 of the door body 2, When performing maintenance of the main girder 4 and the like of the door body 2, the main girder 4 and the like can be maintained by removing the weight body 13 from the upper surface 5 a of the web 5 of each main girder 4.

  Further, when the position of the center of gravity of the door body 2 is shifted in the upstream direction (Y1 direction), the downstream direction (Y2 direction) of the river, and the width direction of the river, the upper surface 5a of the web 5 of each main girder 4 of the door body 2. The position of the center of gravity can be corrected by adjusting the position of the weight body 13 to be placed on the left side or the balance between the left and right sides, so that the door body 2 is located in the upstream direction (Y1 direction) and downstream direction (Y2 direction) of the river. ), It is possible to prevent the vertical movement of the door body 2 from being slanted in the width direction of the river, and to smoothly move the door body 2 up and down.

DESCRIPTION OF SYMBOLS 1 Roller gate 2 Door body 3 Reinforcement girder 4 Main girder 5 Web 5a Upper surface 6 Vertical girder 7 Skin plate 8 Roller 9 Roller guide 11 Wire rope 12 Support shaft 13 Weight body 14 Weight plate 15 Notch 16 Side wall 17 Opening

Claims (5)

A roller gate that opens and closes the openings of flood outlets and intakes of hydroelectric power plants,
It consists of a skin plate that receives water pressure and a reinforcing girder that is formed on the surface opposite to the surface that receives the water pressure of the skin plate, and is composed of a main girder and a vertical girder combined vertically and horizontally, such as the flood outlet, intake port, etc. A door body that can be raised and lowered by its own weight, a roller that is rotatably provided at the left and right ends of the door body, and a roller that is provided on both side walls forming the opening and that rotatably guides the roller. With a roller guide ,
A roller gate characterized in that a weight body composed of at least one weight plate is detachably mounted at a plurality of positions above the main girder.   2. The roller gate according to claim 1, wherein a support shaft that supports the weight body is provided at a plurality of locations above the main girder.   The support shafts are provided at a plurality of locations at predetermined intervals in the longitudinal direction of the main girder and at least in one row in the width direction of the main girder on the main girder. 2. The roller gate according to 2.   The weight plate is provided with a notch or an insertion hole through which the support shaft is inserted, and the weight plate is mounted on the upper part of the main beam by inserting the support shaft into the notch or the insertion hole. The roller gate according to claim 2, wherein the roller gate is supported in a placed state.   The roller gate according to claim 1, wherein the weight plate is made of a metal plate.

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