JP2008025169A - Derricking gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a derricking gate which makes costs low by dispensing with the use of a high-strength rubber material, a high-performance compressor, etc. by devising a shape of a bag body so as to increase an area of contact with a door body. <P>SOLUTION: The bag body 4 for turning the door body 3 is constituted by bonding face portions 4B and 4C at both ends, which almost flatly close openings 4b and 4c at both ends in the expanded state of a central body portion 4A, to the central body portion 4A which is expanded in an approximately cylindrical shape long in the width direction of the door body 3. This enables the bag body 4 to be three-dimensionally formed by a so-called three-dimensional cutting method. Thus, both the ends are turned into an approximately flat shape even if the bag body 4 is expanded by the supply of air. This brings the bag body 4 into contact with the door body 3 in such a manner that the width of the door body 3 is almost equal to that of the bag body 3, when the bag body 4 almost equal in width to the door body 3 is installed. Consequently, the area (pressurization area) of the contact of the bag body 4 with the door body 3 is increased. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a relief gate.

  Conventionally, as shown in FIGS. 6 (a) and 6 (b), at the bottom 11a of the water channel 11, a door body 13 clamped to be rotatable between an upstream standing position U and a downstream lying position D; The bag body 14 is provided on the downstream side of the door body 13, and the bag body 14 is rotated in the upright direction by the expansion of the bag body 14 by the supply of air, and the bag body is formed by discharging the air. There is a raising / lowering gate 12 in which the door body 13 is rotated in the lying down direction by contraction of 14 (see Patent Document 1).

  In the undulation gate 12 as described above, the bag body 14 is usually formed into an envelope shape by bonding the four perimeters of two rubber sheets that are overlapped, as shown in FIG. Therefore, when the bag body 14 is inflated by the supply of air, it becomes a substantially circular shape in the side view of FIG. 7 (c), but in the front view of FIG. 7 (b), the substantially crescent moon with both ends 14a greatly recessed inward. It becomes a shape.

  For this reason, as shown in FIG. 6B, even when the bag body 14 having a width substantially the same as the width W of the door body 13 is installed, the width is substantially half the width W of the door body 13. Only the central part of the bag body 14 comes into contact with the door body 13 at W / 2 (see hatching a).

Thus, since the contact area of the bag body 14 with respect to the door body 13 is small, in order to support the dead weight and water pressure of the door body 13, it is necessary to make the air pressure in the bag body 14 high.
JP 2002-309547 A

  However, when the air pressure in the bag body 14 is increased, a high-strength rubber material must be used as the tension acting on the bag body 14 increases. Since a high-capacity one must be used, there was a problem of high price.

  The present invention was made to solve the above problems, and by devising the shape of the bag body to increase the contact area with the door body, a high-strength rubber material, a high-performance compressor, etc. An object of the present invention is to provide an undulating gate that can be used at low cost without the need to use it.

  In order to solve the above problems, the present invention provides a door body clamped to be rotatable between an upstream standing position and a downstream lying position at the bottom of a water channel, and on the downstream side of the door body. And the door body is rotated in the upright direction by the expansion of the bag body due to the supply of air, and the door body is rotated in the lying down direction by the contraction of the bag body due to the discharge of air. In the undulating gate, the bag body has both ends that close the opening of both ends of the central body portion in a substantially flat shape at the center body portion that expands in a substantially cylindrical shape that is long in the width direction of the door body. The present invention provides a undulating gate characterized in that a mirror part is bonded together.

  According to a second aspect of the present invention, it is preferable that the central body portion at the time of expansion has a substantially flat shape along the bottom of the water channel and a substantially flat shape along the back portion of the door body.

  According to a third aspect of the present invention, it is preferable that a fin-like fixing portion that is fixed to the bottom portion of the water channel is provided at the both end mirror portions.

  According to the present invention, the bag body can be three-dimensionally molded by a so-called three-dimensional cutting method by sticking both end mirrors to the both end openings in the expanded state of the central body portion of the bag body and closing it with a substantially flat shape. Therefore, even if the bag body expands due to the supply of air, both ends are not nearly crescent shaped as in the past, but are almost flat, so a bag body with the same width as the door body width is installed. When it is, the bag body comes into contact with the door body with a width substantially the same as the width of the door body.

  Therefore, since the contact area (pressurized area) of the bag body with respect to the door body increases, it is not necessary to increase the air pressure in the bag body in order to support the dead weight or water pressure of the door body. There is no need to use materials, high-performance compressors, etc., making it possible to reduce costs.

  As in claim 2, as a result of three-dimensional molding of the bag body, by making the portion along the bottom of the water channel of the central trunk part into a substantially flat shape, the area in contact with the bottom of the water channel increases, and it is fixed to the bottom of the water channel While a state is stabilized, the contact area (pressurization area) with respect to a door body increases more by making the part along the back part of the door body of a center trunk | drum into a substantially flat shape.

  Since the bag body can be fixed to the bottom portion of the water channel by the fin-shaped fixing portions at both ends, the fixing operation can be easily performed.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 (a) and 1 (b), the undulating gate 2 provided so as to cross the river and the water channel 1 is the bottom 1a of the water channel 1, with an upstream standing position U and a downstream lodging position D. A door body 3 clamped so as to be rotatable between the door body 3 and a bag body 4 installed on the downstream side of the door body 3. The door body 3 is erected by the expansion of the bag body 4 by the supply of air. As shown in FIGS. 2A, 2B, and 2C, the door body 3 is rotated in the lying down direction due to the shrinkage of the bag body 4 by the discharge of air.

  An air supply / exhaust pipe 6 is connected to the bag body 4 via a compressor 7, a compressed air tank 8 and a three-way electromagnetic switching valve 9. By switching the three-way electromagnetic switching valve 9, the bag body 4 is indicated by an arrow c. In addition, air is supplied from the bag body 4 as indicated by an arrow d.

  The steel door body 3 is formed in a horizontally long rectangular shape, and its lower end portion is clamped to the bottom portion 1a by a hinge member 5A so as to be rotatable, and between the upper end portion and the bottom portion 1a is flexible such as a chain. It connects with the connection member 5B and the upper limit of the standing position U of the door body 3 comes to be controlled by this connection member 5B.

  The rubber bag body 4 is formed in a horizontally long pillow shape, and expands upward and contracts downward when fin-shaped fixing portions 4D of both end mirror portions 4B and 4C described later are fixed to the bottom portion 1a. It becomes like this.

  As shown in FIGS. 3 (a) and 3 (b), the bag body 4 has a central body portion 4A that expands in a substantially cylindrical shape that is long in the width direction of the door body 3, and a central body portion as shown in FIGS. One end mirror part 4B which closes one end opening (left end opening in the figure) 4b of the body part 4A in an expanded state with a substantially flat shape, and the center body part 4A in an expanded state as shown in FIGS. The other end opening (right end opening in the figure) 4c is provided with the other end mirror portion 4C that closes in a substantially flat shape.

  And the bag body 4 is comprised like FIG. 5 by affixing both ends mirror part 4B, 4C on the both-ends opening 4b, 4c of the expansion | swelling state of the center trunk | drum 4A airtightly.

  As shown in FIG. 3A, the central body portion 4A during expansion forms a portion 4d along the bottom portion 1a of the water channel 1 in a substantially flat shape, and a portion 4e along the back portion of the door body 3 in a substantially flat shape. Forming.

  Further, as shown in FIGS. 4A, 4B, and 4C, fin-shaped fixing portions 4D that are fixed outwardly to the bottom portion 1a of the water channel 1 are attached to the both end mirror portions 4B and 4C. .

  If the bag body 4 of the undulation gate 2 is configured as described above, both end mirror portions 4B and 4C are bonded to the expanded both end openings 4b and 4c of the central body portion 4A of the bag body 4 and closed in a substantially flat shape. By doing so, the bag body 4 can be three-dimensionally molded by a so-called three-dimensional cutting method.

  Thereby, even if the bag body 4 is inflated by the supply of air, both ends are not substantially crescent shaped as in the prior art, but are substantially flat, so that the width of the door body 3 is as shown in FIG. When the bag body 4 having the same width W1 as W is installed, the bag body 4 comes into contact with the door body 3 with the width W ′ substantially the same as the width W of the door body (see hatching b).

  In FIG. 1B, since the fin-shaped fixing portion 4D is drawn large, the width W1 of the bag body 4 is drawn narrower than the width W of the door body 3. As a result, the width W that contacts the width W of the door body 3 is drawn. ′ Seems to be narrow, but since the width of the fin-like fixing portion 4D is actually narrow, the width W of the door body 3 and the width W1 of the bag body 4 are substantially the same. The bag 4 comes into contact with the door 3 with a width W ′ substantially the same as the width W of the body 3. In addition, if the fixing structure which fixes the lower part of the bag body 4 to the bottom part 1a of the water channel 1 instead of fixing the bag body 4 outwardly to the bottom part 1a of the water channel 1 by the fin-shaped fixing part 4D is a door body. 3 and the width W1 of the bag body 4 can be made substantially the same.

  Therefore, since the contact area (pressurization area) of the bag body 4 with respect to the door body 3 increases, it is not necessary to increase the air pressure in the bag body 4 in order to support the dead weight or the water pressure of the door body 3. This eliminates the need to use a high-strength rubber material or a high-capacity compressor, so that the price can be reduced. That is, the conventional bag body 14 has a contact width W / 2 that is substantially half the width W of the door body 13, but the bag body 4 of the present embodiment has a contact width W that is substantially the same as the width W of the door body 3. ′ (The contact width is about twice), the air pressure in the bag body 4 may be about ½, and the material strength of the bag body 4 can be applied to ½, so that the price can be reduced. become.

  Further, as a result of three-dimensional molding of the bag body 4, by making the portion 4 d along the bottom portion 1 a of the water channel 1 of the central body portion 4 A into a substantially flat shape, the area in contact with the bottom portion 1 a of the water channel 1 increases, While the fixed state with respect to the bottom part 1a is stabilized, the contact area (pressurization area) with respect to the door body 3 increases more by making the part 4e along the back part of the door body 3 of the center trunk | drum 4A into a substantially flat shape. Become.

  Furthermore, since the bag body 4 can be fixed to the bottom 1a of the water channel 1 by the outward fin fixing portions 4D at both ends, the fixing operation can be easily performed.

It is the raising / lowering gate which concerns on embodiment of this invention, (a) is a side view of a standing position, (b) is a front view of the standing position seen from the downstream. It is the undulation gate which concerns on embodiment of this invention, (a) is a top view of a fall position, (b) is a side view of a fall position, (c) is a front view of the fall position seen from the downstream. (A) is a side view of the central body part, (b) is a front view of the central body part, (c) is a side view of the one end mirror part, (d) is a front view of the one end mirror part, e) is a side view of the other end mirror part, and (f) is a front view of the other end mirror part. It is a bag body, (a) is a side view on the one end mirror part side, (b) is a front view, and (c) is a side view on the other end mirror part side. It is a perspective view of the door body and bag body of a standing position. It is the conventional raising / lowering gate, (a) is a side view of a standing position, (b) is a front view of the standing position seen from the downstream side. It is the bag body of the conventional raising / lowering gate, (a) is a perspective view of a contracted state, (b) is a front view of an expanded state, (c) is a side view of an expanded state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waterway 1a Bottom part 2 Undulating gate 3 Door body 4 Bag body 4A Central trunk | drum 4B One mirror part 4C The other mirror part 4D Fin-shaped fixing | fixed part 4b One end opening 4c The other end opening 4d The part 4e along the bottom part of a waterway 4e Back part of a door body Part U along Standing position D Lodging position

Claims (3)

At the bottom of the water channel, there is provided a door body that is clamped so as to be rotatable between an upstream standing position and a downstream lying position, and a bag body that is installed on the downstream side of the door body. In the hoisting gate in which the door body is rotated in the standing direction due to the expansion of the bag body due to the supply of, and the door body is rotated in the lying down direction due to the shrinkage of the bag body due to the discharge of air,
The bag body is configured by pasting a center barrel portion that expands in a substantially cylindrical shape that is long in the width direction of the door body, and a both-end mirror portion that closes both ends of the expanded state of the center barrel portion in a substantially flat shape. An undulating gate characterized by being.   The undulating gate according to claim 1, wherein the central trunk portion at the time of expansion has a substantially flat shape at a portion along the bottom of the water channel, and a substantially flat shape at a portion along the back portion of the door body.   The undulation gate according to claim 1 or 2, wherein a fin-like fixing portion that is fixed to the bottom portion of the water channel is provided at the both end mirror portions.

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