JP4112938B2 - Gate with pump - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pumped gate installed in a river or waterway.
[0002]
[Prior art]
Conventionally, in order to prevent the upstream water from flowing back to the upstream side when there is a risk of flooding in rivers and waterways, and to prevent the upstream water from increasing by draining the upstream water to the downstream side. A pumped gate is installed.
[0003]
In the conventional gate with a pump, a pump that is rotated by an induction motor is disposed in a passage formed in a predetermined position of a door body that can be moved up and down.
[0004]
However, since induction motors start up suddenly at startup, an unstable state occurs from startup to steady operation, and when a certain discharge flow rate is secured, a large and high output induction motor is obtained. However, there is a problem that the pump itself is upsized and the entire equipment needs to be upsized due to the weight of the door, which requires high equipment costs.
[0005]
Therefore, as a gate with a pump that is smooth from start-up to steady operation and can be further reduced in size and weight, a pump using a hydraulic motor is installed on the door body, as disclosed in JP-A-10-31735-7. It is presented in the gazette and Japanese Patent Application No. 2001-271881.
[0006]
[Problems to be solved by the invention]
However, the hydraulic pump presented in Japanese Patent Application Laid-Open No. 10-317357 is of a vertical axis type, and it is difficult to reduce the size, and in some cases, it is difficult to use it in a shallow channel so that the channel needs to be dug down. In addition, there is also a problem that the pump is liable to be damaged by the flowing-down material.
[0007]
Moreover, the gate with a pump shown in Japanese Patent Application No. 2001-271781 is a hydraulic pump in which the rotation shaft is arranged along the width direction of the door body, and the thickness of the door body cannot be reduced.
[0008]
The present invention has been made in view of such points, and can be installed without being constrained by the width and depth of a river or waterway, and can be installed on a thin door body. It also provides a pumped gate that is not easily damaged.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a cylindrical passage formed in the flow direction of the water channel that is formed at a predetermined position of the door body by opening and closing the gate by a door body that can be moved up and down in the water channel. A pump using an impeller rotated by a motor is a gate with a pump in which an axis is arranged in a thickness direction of the door body, and the pump includes a fixed portion provided at a base end and the door body A motor that is supported at a shaft center position in the case by a plurality of fixing members that are installed between a cylindrical case that is inserted into a passage formed in the shaft, and a rotary shaft that protrudes from the tip of the motor. And a bullet-shaped boss disposed on the outer periphery of the motor, and a plurality of blades which are provided upright on the outer periphery of the boss and constitute an impeller .
[0010]
Further, the opening end on the upstream side of the cylindrical case inserted into the passage formed in the door body can be expanded in a curved shape to facilitate the suction.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 to FIG. 3 show an example of a preferred embodiment of the present invention. A door body 3 is disposed so as to be movable up and down in guide grooves 2 and 2 formed on both banks of the water channel 1. The door body 3 is connected to lifting means 6 provided on a beam 5 disposed above the water channel 1 through a suspension spindle 4 attached to the top surface 3a.
[0013]
The elevating means 6 has a prime mover driven by a hydraulic motor on the shore side (not shown), and drives the door in the forward or reverse direction to raise and lower the door body 3 to open and close the gate.
[0014]
Further, the door body 3 has a cylindrical passage 7 formed at a predetermined position in the flow direction of the water channel 1, and a pump 10 using an impeller 9 rotated by a hydraulic motor 8 has an axis directed in the width direction of the door body 3. Has been placed.
[0015]
More specifically, a bullet-shaped cover 12 that accommodates a hydraulic motor 8 is placed on the spherical side at an axial center position in a cylindrical case 11 that is inserted into a passage 7 formed in the door body 3. It is fixed to the upstream 1a side of the water channel 1 by a plurality (5 in this embodiment) of fixing members 13 installed between the case 11 and the cover 12 with the plane side facing the downstream 1b side.
[0016]
That is, a cylindrical case-like fixing portion 16 provided at the base end of the hydraulic motor 8 is positioned at the axial center position in the cylindrical case 11 that is inserted into the passage 7 formed in the door body 3. The hydraulic motor 8 is supported on the front side of the fixing member 13, that is, on the upstream side 1 a and protrudes on the front side of the hydraulic motor 8. An impeller 9 is mounted on the rotary shaft 17 via a boss 9a. In particular, a bullet-shaped boss 9a of the impeller 9 is disposed on the outer periphery of the hydraulic motor. Therefore, since the whole pump can be formed in a short axis with a simple configuration, the thickness of the door body 3 can be reduced, and further weight reduction can be achieved as a whole.
[0017]
In addition, the opening end portion on the upstream 1a side of the cylindrical case 11 that is inserted into the passage 7 formed in the door body 3 expands in a curved shape to facilitate suction.
[0018]
In the drawings, reference numeral 14 denotes a flap valve hinged at the upper open end of the passage 1 formed on the door 1 on the downstream 1b side, and reference numeral 15 denotes an oil feed pipe connected to the hydraulic motor 8. The oil feeding pipe 15 is connected to a hydraulic pump (not shown) provided on the shore side, and in particular, the intermediate part is formed flexibly like, for example, a high-pressure rubber pipe and can follow the raising and lowering of the door body 3. Has been.
[0019]
In this embodiment configured as described above, natural flow is possible with the gate closed, that is, with the door 3 lowered, but normally the door 3 is opened as the raised position. The water on the upstream 1a side of the water channel 1 can flow down to the downstream 1b side, and the flow amount can be adjusted by changing the rising position of the door body 3.
[0020]
Further, when there is a possibility of flooding, the back body 3 is lowered and the gate is closed to prevent back flow from the downstream 1b side to the upstream 1a side in cooperation with the flap valve 14. Furthermore, if necessary, the hydraulic motor 8 installed in the door body 3 can be started and the water on the upstream 1a side can be forced to flow down to the downstream 1b side by the pump 10. The amount of water at this time can be adjusted by adjusting the output of the hydraulic motor 8.
[0021]
Accordingly, it is needless to say that the present embodiment can provide an action such as preventing flooding in the same manner as the conventional pumped gate, and the conventional induction motor is used because the hydraulic motor 8 is used as a drive source. Unlike the case, the pump 10 can be reduced in size from the start to the steady operation, and the entire pump 10 can be miniaturized. Therefore, the pump 10 can be installed within the width of the door body 3 and can be reduced in weight. In particular, since the pump 10 is arranged with its axis line oriented in the width direction of the door body 3, it can be made smaller and more applicable to a narrow channel width than a case where it has a vertical hydraulic pump. It can be used even in a shallow water channel, and the pump 10 is less likely to be damaged by the flowed-down material, and can be allowed to flow naturally with the gate closed. Further, the thickness of the door body 3 can be made thinner than that in which the hydraulic pump has the rotation shaft arranged along the width direction of the door body 3.
[0022]
【The invention's effect】
According to the present invention, it is possible to further reduce the size and weight of a pump as compared with a pumped gate using a vertical hydraulic pump, and even a shallow water channel can be used without having to dig up the water channel. It is possible to flow down naturally even when the gate is closed.
[0023]
Moreover, the thickness of the door body can be made thinner than that of a hydraulic pump type pump-equipped gate in which the rotation shaft is arranged along the width direction of the door body.
[0024]
Furthermore, when the boss of the impeller is arranged on the outer periphery of the hydraulic motor in which the pump is fixed along the central axis of the passage, the entire pump can be further shortened, and the door body can be made thin. Can be realized.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
FIG. 2 is a partial longitudinal sectional view of FIG.
FIG. 3 is an enlarged partial view of FIG. 2;
[Explanation of symbols]
1 waterway, 3 doors, 7 passages, 8 hydraulic motor, 9 impeller, 9a boss, 10 pump

Claims (2)

A pump that uses an impeller that is rotated by a motor in a cylindrical passage formed in a flow direction of the water channel that is formed at a predetermined position of the door body and that opens and closes a gate by a door body that can be moved up and down in the water channel a axis thickness pump gated that are arranged toward the direction of the door body, a cylindrical casing in which the pump is inserted into the passage formed in the fixed portion provided at the proximal end the door body A motor supported at an axial center position in the case by a plurality of fixing members laid between the motor and a shell mounted on the outer periphery of the motor while being axially attached to a rotary shaft protruding from the tip of the motor A gate with a pump comprising: a boss having a shape and a plurality of blades standing on the outer periphery of the boss and constituting an impeller . 2. The gate with a pump according to claim 1, wherein an opening end on an upstream side of a cylindrical case fitted into a passage formed in the door body is expanded in a curved shape to facilitate suction .

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