JP3397118B2 - Opening / closing mechanism for two-stage gate with undulating gate - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing mechanism of a two-stage gate with an up / down gate used for flood discharge and adjustment of a weir or the like. 2. Description of the Related Art A two-stage gate with an up-and-down gate has an upper door and a lower door, and as a type, an up-and-down gate is used as an upper door, and a pull-up gate is used as a lower door. FIG. 4 is a perspective view showing an example of a two-stage gate with an undulating gate. Pull-up gate 2 is gate post 3 on both ends
(Omitted on the near side) A pair of hydraulic cylinders 4 installed above
As a result, the inside of the door groove 5 is moved up and down as shown by the arrow to be opened and closed. [0004] The undulating gate 1 is supported in the form of a hinge (not shown), and is mounted on a rotating shaft.
It is undulated and opened and closed. The hydraulic piping of the hydraulic cylinder 6 is made to follow the elevation of the pull-up gate 2 by a flexible hose 7. Reference numeral 8 denotes a rectifying plate integrally provided at both ends of the pull-up gate 2, and reference numeral 9 denotes a floor slab [prior art (1)]. On the other hand, Japanese Utility Model Laid-Open No. 7-38223 discloses that
There is disclosed a wire rope opening / closing device for a two-stage gate in which a parent drum having a large-diameter trunk portion and a small-diameter trunk portion coaxially, and further a child drum are installed on a bank. When opening and closing the upper door, the opening and closing device is performed by lowering the child drum. When the lower door and the upper door are integrally opened and closed, the upper drum can be moved by lowering the parent drum. One end of the hoisting rope is fixed to the small-diameter body of the parent drum via a guide sheep. Here, the guide sheep is suspended and supported so as to be embraced by the overload detection device installed on the embankment, and transmits the tension change of the hoisting rope for the upper door to the overload detection device via the guide sheep. In this way, an overload or looseness of the hoisting rope can be detected, and a breakage of the hoisting rope or the like can be prevented beforehand [conventional technology (2)]. However, the prior art (1) has the following problems. In general, a two-stage gate with an up / down gate is in a state in which the up / down gate is not used when the up / down gate is being opened / closed, and when the up / down gate is being opened / closed. The undulating gate is not used. Regardless, in the prior art (1), since the up-and-down gate 1 and the pull-up gate 2 have independent switching devices, respectively, the number of switching devices increases, and the number of hydraulic pipes also increases. The equipment is complicated. Further, the hydraulic piping of the hydraulic cylinder 6 for the up / down gate moves as the lifting gate 2 moves up and down.
A rubber flexible hose 7 is required, and deteriorates over a long period of use and lacks reliability. Further, since the opening / closing device for the undulating gate 1 is installed in a limited place of the door groove, the gate width may protrude from the gate groove, and the gate width may not be fully utilized. In the case of the prior art 2, when the upper door is opened and closed, the child drum is lifted and lowered. When the lower door and the upper door are opened and closed integrally, the parent drum is lifted and lowered. Therefore, the number of drums and the number of wire ropes increase, and the equipment is complicated. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a common opening / closing device, and can use a simple opening / closing mechanism to open / close a hoisting gate and a lifting gate. An object of the present invention is to provide an opening and closing mechanism for a two-stage gate. According to the present invention, an up / down gate is used for an upper door, and an up / down gate is used for a lower door. The opening / closing mechanism for a two-stage gate with an up / down gate, which is connected to the front end of a connecting member of the opening / closing device behind the straightening plate of the pull-up gate, and is provided at a predetermined distance from the front end. A lifting rod having a ring attached thereto, a torque arm pivotally attached to the end of the rotary shaft, a link rod having one end pin-coupled and the other end pin-coupled to the ring, and a rear side of the current plate. At the top, at predetermined intervals up and down,
A two-stage gate with an up / down gate, wherein a pair of stoppers having an opening are provided, a lifting rod is passed through the stopper so that the ring is positioned therebetween, and the ring stops at the stopper. Mechanism. According to the present invention, the opening / closing device can be shared by a simple opening / closing mechanism and the opening / closing of the up / down gate and the pull-up gate can be easily performed. The equipment is simple and there are few installation locations. Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a preferred embodiment of the present invention, which is partially cut away. Parts common to FIG. 4 are provided with the same reference numerals. As shown in FIG. 1, a two-stage gate 10 with an undulating gate is provided on a floor slab 9 between the gate posts 3.
The two-stage gate 10 with an undulating gate has a door body composed of an upper door and a lower door, and as a type, an undulating gate 1 is used as an upper door, and a pull-up gate 2 is used as a lower door. ,
The up / down gate 1 is supported in a hinge type (not shown), is mounted on a rotating shaft 16 and is provided so as to be able to go up and down. A pair of common hydraulic cylinders 11 is installed on the gate post 3 as an opening / closing device, and the cylinder rod 12 can be extended and contracted in the door groove 5. A pull-up rod 15 having a ring 14 at a predetermined distance from the tip thereof is positioned at the rear end (door groove side) of a current plate 13 attached to both ends of the pull-up gate 2 at the tip end of the cylinder rod 12. Are connected. At both ends of the rotating shaft 16 of the undulating gate 1,
Torque arms 18a, 18b (hidden and invisible) are axially mounted, and are pin-joined between the torque arms 18a, 18b and the ring 14 using a link rod 19. A pair of stoppers 17a, 1a having an opening at predetermined intervals in the vertical direction are provided on the upper portion on the back side of the current plate 13.
7b is provided. The openings of the stoppers 17a and 17b allow the pull-up rod 15 to pass therethrough and prevent the ring 14 from passing therethrough. Next, the opening and closing operation of the present invention will be described in detail. FIG. 2 is a schematic diagram showing a state in which the undulating gate according to the present invention is laid down, and FIG. 3 is a schematic diagram showing a state in which the undulating gate is erected. The two-stage gate 10 with the undulating gate is driven by a pair of common hydraulic cylinders 11 on the gate posts on both sides.
The opening / closing operation is performed, and will be described in detail by using the opening / closing mechanism on one side for convenience. As shown in FIG. 2, the up-and-down gate 1 is pivotally mounted on the rotary shaft 16 on the pull-up type gate 2 so as to fall down. The hydraulic cylinder 11 is driven, the cylinder rod 12 is extended, and the pulling rod 15 is lowered.
7b. The position of the lower stop 17b is set so that the up / down gate 1 is in the down state. Here, the pull-up gate 2 is in a closed state. Reference numeral 20a denotes an opening provided in the upper stopper 17a, and reference numeral 20b denotes an opening provided in the lower stopper 17b. Next, the cylinder rod 12 is contracted,
When the lifting rod 15 is raised, as shown in FIG.
The ring 14 of the pulling rod 15 is stopped by the upper stopper 17a, and the undulating gate 1 is in an upright state. The position of the upper stop 17a is set so that the up / down gate 1 is in an upright state. Also here, the pull-up gate 2 is in a closed state. As described above, the opening / closing of the up / down gate 1 by the up / down operation is performed by raising / lowering the ring 14 of the lifting rod 15 between the stoppers 17a and 17b. Next, when opening the pull-up gate 12, the cylinder rod 12 is further contracted, and
Increase 5 When the lifting rod 15 is to be lifted, the stopper 17a is pushed up, and at the same time, the stopper 17a
Is raised and the lift gate 2 is raised, with the result that the lift gate 2 opens. The water discharge by the pull-up gate 2 is performed by adjusting the opening to an appropriate degree. When the pull-up gate 2 is raised, the undulating gate 1 is always upright, but there is no effect. Although the common hydraulic cylinder 14 is used as the opening and closing device in the above embodiment, the invention is not limited to this, and a wire rope or the like may be used. According to the above embodiment, the following effects can be obtained. Since the opening and closing operations of both the up-and-down gate 1 and the pull-up gate 2 are performed by a common opening and closing device, the number of opening and closing devices and the number of hydraulic pipes can be reduced, and the equipment is simple. Since the rubber flexible hose which is easily deteriorated is not used, the reliability is high. In addition, undulating gate 1
Since the opening / closing device is shared with the pull-up gate 2, the opening / closing device is not used in the door groove, so that the opening / closing device does not protrude into the gate width, and the gate width can be fully utilized. As described above, according to the present invention, the opening / closing device can be shared by a simple opening / closing mechanism, and the opening / closing of the up / down gate and the pull-up gate can be easily performed. The number of devices, hydraulic piping, etc. is small, the equipment is simple, and the installation place can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view, partially cut away, showing an embodiment of the present invention. FIG. 2 is a schematic view showing a state in which an undulating gate according to the present invention is laid down. FIG. 3 is a schematic diagram showing a state where an undulating gate according to the present invention is erected. FIG. 4 is a perspective view showing an example of a conventional two-stage gate with an undulating gate. [Description of Signs] 1 Up / down gate 2 Pull-up gate 3 Gate column 5 Door groove 9 Base 10 2-stage gate with up / down gate 11 Common hydraulic cylinder 12 Cylinder rod 13 Straightening plate (for the present invention) 14 Ring 15 Pull-up rod 16 Rotation Shaft 17a, 17b Stop plate 18a, 18b Torque arm 19 Link rod 20a, 20b Opening

Continuation of the front page (72) Inventor Keiichi Nakahara 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Inventor Nobuo Katayama 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (56) References JP-A-62-296004 (JP, A) JP-A-1-138924 (JP, U) JP-A-7-38223 (JP, U) JP-A-47-11881 (JP, U) ( 58) Field surveyed (Int. Cl. ⁷ , DB name) E02B 7/20 109 E02B 7/26 101 E02B 7/44 E02B 7/46

Claims (1)

(57) [Claims 1] An up / down gate is used for an upper door, and an up / down gate is used for a lower door, and an up / down gate mounted on a rotating shaft is provided on the up / down gate. A two-stage gate opening / closing mechanism having an up / down gate, which is connected to a front end of a connecting member of an opening / closing device at a rear side of a straightening plate of the pull-up gate and attached at a predetermined distance from the front end. A pull rod having a ring provided, a torque arm pivotally attached to the end of the rotation shaft, one end is pin-coupled, and the other end is provided with a link rod pin-coupled to the ring. A pair of stoppers having openings are provided at predetermined intervals above and below, and a pull-up rod is penetrated so that the ring is located therebetween, so that the ring stops at the stopper. Opening and closing of two-stage gate with rolling gate Structure.