JP2006152978A - Pump structure mounted on gate facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump structure mounted on a gate facility facilitating mounting work on gate and maintenance, and performing miniaturization by devising arrangement of a drive motor of a pump mounted on the gate. <P>SOLUTION: The pump 4 forcedly draining water in an upstream side water channel 2a to a downstream side water channel 2b is mounted on the gate 11. AN opening/closing door 5 is attached to an inner part side of the gate 11 and in a delivery port 41b side of the pump 4. An upper gear box 6 having an upper part of a transmission shaft 43 around a vertical rotation axis of the pump 4 stored in a water-proof inside is attached right above the pump 4. A horizontal shaft rotation motor 7 is attached to a desired section of side part of an upper part gear box 6 in such a manner that the same can be freely replaced, the transmission shaft 43 of the pump 4 and a rotary shaft 71 of the motor 7 are interlocked and connected via a perpendicularly meshing gear mechanism 61 stored inside of the upper part gear box 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement in a technique in which a pump for forcibly discharging water from an upstream water channel of a gate to a downstream water channel is attached to the gate, and in particular, an arrangement of a driving motor for the pump attached to the gate. It relates to a pump structure that is devised to be attached to a gate facility that is easy to install on the gate and facilitate maintenance and miniaturization.

The conventional drainage station is equipped with a pump facility that discharges floods and a gate facility that opens and closes the drainage channel. Therefore, in order to reduce the construction cost, it is proposed to reduce the construction cost by installing the pump equipment to the gate equipment and consolidating the facilities. As the structure of the pump installed at the gate, many axial flow pumps that are advantageous for further miniaturization are employed.
JP2004-100259 JP 2004-92146 A JP 2004-36559 A

  However, depending on the pump structure attached to the gate, it is difficult to maintain and inspect the pump, or it is necessary to make the gate side a special structure for fixing the pump. Further, in the conventional models such as JP 2004-100259, JP 2004-92146, JP 2004-36559, etc., the motor for driving the blades has been developed exclusively and is incompatible with each manufacturer and expensive. It has become. Furthermore, when the motor is maintained, it is necessary to remove the entire pump facility from the gate facility.

  The present invention has been devised in view of the above-described problems, and has been devised to solve the problems. The object of the present invention is to devise the arrangement of the drive motor for the pump attached to the gate. Thus, it is an object of the present invention to provide a pump structure that can be attached to a gate facility, which can be easily reduced in size by facilitating the installation and maintenance of the gate.

  In order to achieve the above object, the present invention attaches a pump for forcibly draining water from the upstream channel to the downstream channel on the side facing the upstream channel of the elevating gate that opens and closes the channel. An open / close door that opens to the downstream water channel and drains the water in the upstream water channel to the downstream water channel downstream from the downstream water channel, communicating with the outlet side and preventing backflow from the downstream water channel and forced drainage by driving the pump downstream. The upper part of the conduction shaft that is mounted toward the water channel and rotates around the vertical axis that transmits the driving force to the pump extends directly above the pump, and the upper part of the conduction shaft is accommodated in the waterproof interior. A gear box is mounted directly above the pump, and an electric motor with a rotating shaft extending inside the upper gear box rotating around the horizontal axis is interchangeably mounted at a desired location on the side of the upper gear box, and around the vertical axis. Those composed of means for interlockingly connected through a rotating pump transmission shaft and a gear mechanism which meshes at right angles, which is accommodated in the horizontal axis of the motor rotating about the axis of rotation of the upper Gya box.

As is clear from the above description, the pump structure attached to the gate equipment according to the present invention has the following extremely new and beneficial effects.
(1) Inspect and maintain pump blades, motors and transmission paths individually.
(2) Easy installation to the gate equipment. Installation to the existing gate is also possible with a few modifications.
(3) The mounting direction of the motor can be selected according to local conditions by mounting the motor via the upper gearbox.
(4) Since no electric motor is disposed on the impeller hub, the change in the cross section of the flow path can be minimized, and improvement in operating efficiency can be expected.
(5) Since the motor shaft is level with respect to the gate floor, the draft required for cooling the motor can be kept lower than the model of the motor vertical arrangement.
(6) According to claim 2, since the motor can be attached to either the front, left side or right side of the side part of the upper gear box, the degree of freedom in design, production and field installation work is increased. Can do. Moreover, visual inspection of the gear mechanism inside the upper gearbox is also easier than when the electric motor is mounted downward on the upper surface of the upper gearbox.
(7) According to the third aspect, it is easy to attach the pump equipment to the gate equipment, and it is easy to remove the pump equipment for inspection.

Hereinafter, the present invention will be described more specifically based on the best mode for carrying out the invention described in the drawings.
1 is a side sectional view of a gate with a pump, FIG. 2 is a front view of FIG. 1, FIG. 3 is a rear view of FIG. 1, FIG. 4 is a sectional view of a pump structure, and FIG. 6 is a front view of a gate with a pump provided with another two pumps, FIG. 7 is a front view of a pump structure in which the mounting direction of the motor is different, and FIG. 8 is a gate when no pump is attached. FIG. 9 is a front view of FIG. 8, and FIG. 10 is a rear view of FIG.

  In the figure, a gate 1 with a pump has a structure in which a pump 4 for forcibly discharging water from an upstream water channel 2 a of a gate 11 to a downstream water channel 2 b is attached to the gate 11. It is installed so as to shut off. The gate with pump 1 has a structure that opens and closes the water channel 2 by raising and lowering a gate 11 as a door body. The gate 1 with a pump raises the gate 11 during natural drainage and drains water during forced drainage, and uses the pump 4 attached to the gate 11 with the gate 11 closed during forced drainage. Is forcibly drained into the downstream water channel 2b.

  The gate 11 includes a rectangular plate-like skin plate 11a, an upper frame reinforcing girder 11b attached to the surface of the skin plate 11a facing the upstream water channel 2a, left and right side frame reinforcing girds 11c, a lower frame reinforcing girder 11d, It consists of a vertical reinforcing beam 11e, a horizontal reinforcing beam 11f, and the like.

  The upper frame reinforcing girder 11b is attached to the upper side of the skin plate 11a, the left and right side frame reinforcing girds 11c are attached to the left and right side ends of the skin plate 11a, and the lower frame reinforcing girder 11d is attached to the lower side of the skin plate 11a. The vertical reinforcing beam 11e is attached between the left and right side frame reinforcing beams 11c, and the horizontal reinforcing beam 11f is mounted between the upper frame reinforcing beam 11b and the lower frame reinforcing beam 11d.

  The number and arrangement interval of the vertical reinforcing girders 11e and the horizontal reinforcing girders 11f vary depending on the size of the gate 11, and the number of these attached increases as the skin plate 11a increases. The skin plate 11a of the gate 11 is reinforced by these reinforcing girders to increase the rigidity.

  Gate pillars 3 are extended upward on the left and right sides of the water channel 2 where the gate 1 with a pump is installed. The left and right gate pillars 3 are vertically guided to slide up and down the left and right sides of the gate 11. Guide grooves (not shown) are formed, and the gate 11 is structured so as to move up and down along the guide grooves. The side frame reinforcement girders 11c at the left and right ends of the gate 11 are respectively provided with rollers 12 for reducing sliding resistance with the guide groove, and when the gate 11 moves up and down smoothly, the roller 11 moves up and down smoothly. It can be done.

  The upper frame reinforcement girder 11b at the upper end of the gate 11 is attached with a connector 13 for connecting the lower end side of a wire rope (not shown) for raising and lowering the gate 11, for example. Depending on the size of the gate 11, for example, one connection tool 13 is attached to the center of the upper end of the gate 11, or two attachment tools 13 are attached to the left and right sides of the upper end. For example, the upper end side of a wire rope (not shown) whose lower end side is connected to the coupler 13 is wound around a winding drum (not shown) provided on the upper side of the gate pole 3, and the winding drum is forward and backward by a driving motor (not shown). The gate 11 connected to the lower end side of the wire rope is moved up and down by rotating and winding up and down the wire rope.

  On the surface of the lower part of the gate 11 on the side facing the upstream water channel 2a of the water channel 2, the pump 4 is mounted substantially horizontally with respect to the vertical gate 11 in a state of protruding toward the upstream water channel 2a. The pump 4 functions to forcibly drain the water in the upstream water channel 2a of the gate 11 toward the downstream water channel 2b in a state where the gate 11 is closed. Depending on the size of the gate 11, for example, one pump 4 is attached to the lower center of the gate 11, or two pumps are attached to the left and right sides of the lower part. For example, an axial pump is used as the pump 4.

  For example, the pump 4 including an axial flow pump includes a water guide pipe 41 through which water passes, an impeller hub 42 attached to the center of the water guide pipe 41, and a transmission shaft that transmits the driving force of the motor 7 to the impeller hub 42 via a gear mechanism 61. 43 or the like.

  The water guide pipe 41 is formed in a cylindrical shape, a front-side inlet 41a facing the upstream water channel 2a is formed in a trumpet shape, and the trumpet-shaped inlet 41a is opened slightly diagonally downward toward the front. ing. Further, the water conduit 41 of the pump 4 is attached to the gate 11 so that the inlet 41a thereof is at a height near the bottom of the water channel when the gate is fully closed.

  The peripheral side of the discharge port 41b, which is the rear end of the water conduit 41, is integrally attached to a hole 14a formed in the plate-like pump mounting plate 14 by welding or the like. The water conduit 41 of the pump 4 is attached to the surface of the gate 11 via the pump attachment plate 14. For example, a circular hole 14 a into which the discharge port 41 b of the water conduit 41 is inserted and connected is formed in the pump mounting plate 14 in contact with the water conduit 41.

  The axial direction of the water conduit 41 is perpendicular to the pump mounting plate 14, and when the pump mounting plate 14 perpendicular to the water conduit 41 is attached to the surface of the gate 11, It is attached substantially horizontally to the surface of the gate 11 whose axis direction is vertical.

  The pump mounting plate 14 in which the discharge port 41b side of the water conduit 41 of the pump 4 is integrally mounted is, for example, a bolt on the lower frame reinforcing girder 11d, the vertical reinforcing girder 11e, and the horizontal reinforcing girder 11f that reinforces the skin plate 11a of the gate 11. It is attached with nuts. That is, the upper side of the pump mounting plate 14 is attached to the horizontal reinforcing beam 11f, the left and right sides of the pump mounting plate 14 are mounted to the left and right vertical reinforcing beams 11e, and the lower side of the pump mounting plate 14 is connected to the lower frame reinforcing beam 11d. It is attached.

  The pump mounting plate 14 has a watertight structure in which the upper side, the left and right sides, and the lower side on the peripheral side are attached to these reinforcing girders 11d, 11e, 11f in a watertight state, and the water in the upstream water channel 2a is attached to the pump. Leakage into the downstream water channel 2b from the upper side, the left and right sides or the lower side, which is the peripheral side of the plate 14, is reliably prevented. The skin plate 11a at the location corresponding to the mounting position of the waterproof pump mounting plate 14 is cut out to form an opening 11g. The opening 11g faces and communicates with the downstream water channel 2b.

  As described above, the upstream water channel 2a and the downstream water channel 2b include the skin plate 11a of the gate 11, the pump mounting plate 14, the lateral reinforcing girder 11f to which the upper side of the pump mounting plate 14 is mounted, and the left and right side sides of the pump mounting plate 14. Are blocked by left and right vertical reinforcing girders 11e and a lower frame reinforcing girder 11d to which the lower side of the pump mounting plate 14 is attached.

  An opening / closing door 5 is attached to the discharge port 41 b side which is the rear end of the water conduit 41 of the pump 4. For example, a flap gate is used for the open / close door 5. For example, the open / close door 5 formed of a flap gate is attached toward the downstream water channel 2b on the open / close door mounting plate 15 side mounted back to back on the back surface side of the pump mounting plate 14 on which the pump 4 is mounted. . For example, the open / close door 5 formed of a flap gate faces the downstream water channel 2b through an opening 11g formed in the skin plate 11a. In addition, the open / close door mounting plate 15 is mounted back to back on the back surface side of the pump mounting plate 14 with, for example, bolts and nuts.

  For example, a circular hole 15a is formed in the opening / closing door mounting plate 15, and one end of a discharge pipe 51 having the same inner diameter as the discharge port 41b on the rear end side of the water guide pipe 41 is inserted into the hole 15a and integrally formed by welding or the like. It is attached. The open / close door 5 is attached to the other end surface facing the downstream water channel 2b of the discharge pipe 51 so as to be freely opened and closed. For example, the open / close door 5 formed of a flap gate is connected to the upper portion of the open / close door mounting plate 15 whose upper end faces the downstream water channel 2b by a hinge structure 52.

  For example, the open / close door 5 formed of a flap gate has a so-called check valve structure that opens toward the downstream water channel 2b of the gate 11 and closes toward the upstream water channel 2a of the gate 11 with the hinge structure 52 at the upper end as a rotation center. It has become. The open / close door 5 is closed when the water pressure in the downstream water channel 2b is high to prevent a back flow from the downstream water channel 2b, and is opened by the water pressure of the discharge water discharged from the pump 4 when forced drainage is performed by driving the pump 4. The water in the upstream water channel 2a can be drained into the downstream water channel 2b.

  The discharge pipe 51 attached to the open / close door mounting plate 15 and the open / close door 5 in the closed state are accommodated inside the gate 11, that is, between the pump mounting plate 14 on the thickness side of the gate 11 and the skin plate 11 a. ing. The discharge pipe 51 attached to the inner side of the gate 11 and the closed open / close door 5 are accommodated within the thickness of the gate 11 that moves up and down, and the discharge pipe 51 and the open / close door 5 move when the gate 11 moves up and down. There is no hindrance to lifting.

  The impeller hub 42 attached to the inner center of the water conduit 41 performs a function of forcibly discharging the water in the upstream water channel 2a to the downstream water channel 2b. The impeller hub 42 is rotated by a plurality of rotating blades 42a and the blades disposed inside. A drive shaft 42d, a gear box 42g, and the like are included.

  The impeller hub 42 is attached to the inner center of the water conduit 41 in a state of being suspended from above by a connecting cylinder 44, and is supported by left and right fixing ribs 45 attached obliquely downward to the left and right. The connecting cylinder 44 is attached vertically in the vertical direction. The inside of the connecting cylinder 44 is a cavity, and the conduction shaft 43 is arranged in the vertical direction in this cavity. The upper part of the connecting cylinder 44 passes through the water conduit 41 and is connected and held in the upper gear box 6. The lower part of the connecting cylinder 44 is connected to a gear box 42 g of the impeller hub 42. The connecting cylinder 44 has a function of suspending and holding the impeller hub 42 in the center of the water guide pipe 41 and a function of preventing the impeller hub 42 by inserting a conductive shaft 43 therein.

  The impeller hub 42 is formed in a warhead-like shape on the front end side and the rear end side and is formed in a cylindrical shape in the middle thereof to reduce the resistance of water passing through the water conduit 41. The plurality of rotating blades 42a are disposed at equal intervals on the outer peripheral surface of a rotating cylindrical body 42c that is rotatably disposed on the outer peripheral side immediately behind the tip case 42b. The rotating cylindrical body 42c is interlocked and connected to the side peripheral surface of the blade driving shaft 42d disposed horizontally inside the impeller hub 42 by a plurality of connecting plates. When the blade driving shaft 42d rotates about the axis, the rotating cylindrical body 42c. Is also configured to rotate the blade 42a.

  The blade drive shaft 42d is pivotally supported at the center of the impeller hub 42 in the axial direction of the impeller hub 42 so as to be rotatable about its axis. The tip of the blade drive shaft 42d is fixed to a tip case 42b that rotates together, and the other end of the blade drive shaft 42d is pivotally supported through a gear box 42g inside the impeller hub 42.

  The blade drive shaft 42d is a portion immediately before penetrating the gear box 42g, and its periphery is sealed by a sealing device 42e. In addition, a water intrusion detection device 42f that detects the presence or absence of water intrusion due to seal leakage at a location sealed by the seal device 42e is attached. At the time of maintenance and inspection, the infiltration detection device 42f inspects whether there is a seal leak.

  The gear box 42g is provided in the rear half portion of the impeller hub 42. A blade side bevel gear 42h is attached to a blade drive shaft 42d that penetrates the inside of the gear box 42g. The blade side bevel gear 42h rotates around the horizontal axis. The vane side bevel gear 42h meshes with a transmission shaft side lower bevel gear 43a that rotates about a vertical axis perpendicular thereto. The transmission shaft side lower bevel gear 43 a is attached to the lower portion of the transmission shaft 43.

  The conduction shaft 43 is provided so as to pass through the inside of the connecting cylinder 44 and pass through the gear box 42g of the impeller hub 42 and the water conduit 41 so as to extend vertically upward. The conduction shaft 43 is prevented by a connecting cylinder 44. The upper side of the conductive shaft 43 passes through the upper gear box 6. A transmission shaft side upper bevel gear 61 a that constitutes a part of the gear mechanism 61 is attached to the upper part of the transmission shaft 43 located inside the upper gear box 6. The transmission shaft side upper bevel gear 61a rotates about the vertical axis with the same axis as the transmission shaft side lower bevel gear 43a.

The upper gear box 6 is installed immediately above the water conduit 41 of the pump 4.
The upper gear box 6 houses therein the gear mechanism 61 that transmits the driving force of the electric motor 7 to the transmission shaft 43 of the pump 4. The upper gear box 6 has a box shape, and the bottom surface side of the upper gear box 6 is provided in contact with the upper surface side of the water conduit 41. The back side is constituted by a part of the pump mounting plate 14.

  The upper gear box 6 has a box shape, and has a structure in which the motor 7 is attached to a desired portion in one of three directions, for example, the front side, the left side, or the right side. In the drawing, an electric motor 7 is attached to the front of the upper gear box 6. Thus, since the electric motor 7 can be attached to any one of the front side, the left side, or the right side of the side of the upper gear box 6, the degree of freedom in design, production, and site installation work can be increased.

  The gear mechanism 61 inside the upper gear box 6 has a conductive shaft 43 located inside so that the motor 7 can be attached from any of the three side directions of the front, left side, and right side of the upper gear box 6. The upper part is composed of the transmission shaft side upper bevel gear 61a rotating around the vertical axis and the motor side bevel gear 61b attached to the rotating shaft 71 rotating around the horizontal axis of the electric motor 7. The conduction shaft side upper bevel gear 61a rotates about a vertical axis, and the motor side bevel gear 61b rotates about a horizontal axis perpendicular thereto. The gear mechanism 61 is constituted by the transmission shaft side upper bevel gear 61a and the motor side bevel gear 61b which are meshed at right angles.

  Since the gear mechanism 61 meshing at a right angle is disposed inside the upper gear box 6, the transmission shaft 43 of the pump 4 rotating around the vertical axis is moved from the three horizontal directions perpendicular to this to the horizontal axis. The rotating electric motor 7 can be attached to any one of the three directions of the front, left side, and right side of the upper gear box 6.

  The upper gear box 6 has a waterproof structure inside, so that the transmission shaft side upper bevel gear 61a, the motor side bevel gear 61b and the like constituting the internal gear mechanism 61 are prevented from being damaged by water immersion. An open / close lid 62 is attached to the upper surface of the upper gear box 6 so that the inside can be visually inspected and inspected from the outside.

  The electric motor 7 drives the blade 42a of the pump 4 via the gear mechanism 61 inside the upper gear box 6, and as described above, the electric motor 7 has a rotating shaft 71 in a horizontal state, for example, the front of the upper gear box 6. Is attached. The electric motor 7 is provided with an electric motor cooling device 72 that cools the electric motor 7, and the electric motor cooling device 72 prevents the electric motor 7 from being heated.

  The electric motor 7 is not directly connected to the pump 4 integrally, but is linked to the pump 4 via a gear mechanism 61 that engages at a right angle in the upper gear box 6. It can be attached to and detached from the front and left and right side surfaces. Thus, only the electric motor 7 can be arbitrarily replaced with respect to the pump 4, the electric motor 7 is compatible with the pump 4, and the cost of the electric motor 7 can be reduced.

Next, the operation based on the configuration of the best mode for carrying out the invention will be described below.
When the water in the upstream water channel 2a is forcibly drained into the downstream water channel 2b with the gate 11 closed, the electric motor 7 of the pump 4 is driven. When the electric motor 7 is driven, the rotating shaft 71 of the electric motor 7 rotates around the horizontal axis.

  An electric motor side bevel gear 61b constituting a gear mechanism 61 disposed inside the upper gear box 6 is attached to the front end side of the rotating rotary shaft 71, and the electric motor side bevel gear 61b rotates around a horizontal axis. . The motor-side bevel gear 61 b that rotates about the horizontal axis meshes with the transmission shaft-side upper bevel gear 61 a that rotates about the vertical axis that forms the gear mechanism 61. The transmission shaft side upper bevel gear 61 a is attached to the upper portion of the transmission shaft 43 that rotates about the vertical axis. Therefore, the rotational force about the horizontal axis of the electric motor 7 rotates about the vertical axis via the gear mechanism 61. The force is transmitted to the conduction shaft 43 as a force.

  A transmission shaft side lower bevel gear 43a, which is housed in the impeller hub 42, is attached to the lower part of the transmission shaft 43 that rotates about the vertical axis, and the transmission shaft side lower bevel gear 43a rotates about the vertical axis. A vane side bevel gear 42h that rotates about a horizontal axis inside the impeller hub 42 meshes with the transmission shaft side lower bevel gear 43a that rotates about the vertical axis at a right angle.

  The blade side bevel gear 42h is attached to the rear end side of the blade drive shaft 42d that rotates about the horizontal axis, and a rotating cylindrical body of the blade 42a on the outer peripheral side of the blade drive shaft 42d via an attachment plate. 42c is attached. A plurality of blades 42a are attached to the rotating cylindrical body 42c. When the blade driving shaft 42d rotates, the tip case 42b, the rotating cylindrical body 42c, and the plurality of blades 42a rotate in conjunction with the rotation.

  In this way, the driving force of the electric motor 7 is transmitted from the transmission shaft side lower bevel gear 43a inside the impeller hub 42 to the blade side bevel gear 42h through the transmission shaft 43 by the gear mechanism 61 inside the upper gear box 6, The drive shaft 42d and the plurality of blades 42a are rotated to discharge the water in the water conduit 41 toward the downstream water channel 2b.

  When the plurality of blades 42a arranged inside the water conduit 41 of the pump 4 rotate, a flow is generated inside the water conduit 41 from the upstream water channel 2a toward the downstream water channel 2b. The water in the upstream water channel 2a is sucked in from the inlet 41a of the water conduit 41 and is sent out toward the discharge port 41b of the water conduit 41 by the rotating blade 42a.

  An opening / closing door 5 made of, for example, a flap gate is attached to the discharge port 41b side, which functions as a check valve. For example, the open / close door 5 formed of a flap gate closes the discharge port 41b side by its own weight and the water pressure of the downstream water channel 2b, but opens the door 5 toward the downstream water channel 2b by the water pressure due to the flow velocity generated by driving the impeller hub 42. Thus, the water in the upstream water channel 2 a can be forcibly drained into the downstream water channel 2 b through the pump 4.

  Further, when the gate 11 is opened and the water in the upstream water channel 2a is naturally drained into the downstream water channel 2b, the open / close door 5 is located between the pump mounting plate 14 and the skin plate 11a and inside the gate 11. When the elevator 11 is raised and lowered, the door 5 does not hinder this.

  Note that the present invention is not limited to the best mode for carrying out the invention, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described best mode, the case of the flap gate as the opening / closing door 5 has been described. However, the present invention is not limited to this, and instead of the flap gate, for example, an electric gate valve / butterfly valve, miter gate (viewing door) Etc.

It is a sectional side view of the gate with a pump which shows the best form for implementing this invention. It is a front view of FIG. It is a rear view of FIG. It is sectional drawing of the pump structure which shows the best form for implementing this invention. It is a sectional side view of another small gate with a pump which shows the best form for implementing this invention. It is a front view of the gate with a pump provided with another two-unit pump which shows the best form for implementing this invention. It is a front view of the pump structure from which the attachment direction of the electric motor which shows the best form for implementing this invention differs. It is a sectional side view of a gate when the pump which shows the best form for implementing this invention is not attached. It is a front view of FIG. It is a rear view of FIG.

Explanation of symbols

1 Gate with Pump 11 Gate 11a Skin Plate 11b Upper Frame Reinforcement Girder 11c Side Frame Reinforcement Girder 11d Lower Frame Reinforcement Girder 11e Vertical Reinforcement Girder 11f Horizontal Reinforcement Girder 11g Opening 12 Roller 13 Connector 14 Pump Mounting Plate 14a Hole 15 Opening Door Installation Plate 15a Hole 2 Water channel 2a Upstream side water channel 2b Downstream side water channel 3 Gate pillar 4 Pump 41 Water conduit 41a Inlet 41b Discharge port 42 Impeller hub 42a Blade 42b Tip case 42c Rotating cylinder 42d Blade drive shaft 42e Sealing device 42g Submersion detection device 42g Box 42h Blade side bevel gear 43 Transmission shaft 43a Transmission shaft side lower bevel gear 44 Connecting cylinder 45 Fixed rib 5 Opening / closing door 51 Discharge pipe 52 Hinge structure 6 Upper gear box 61 Gear mechanism 61a Conduction shaft side upper bevel gear 61b Motor side bevel gear 62 Opening and closing lid 7 Electric motor 71 Rotating shaft 72 Motor cooling device

Claims (3)

A pump that forcibly drains water from the upstream water channel to the downstream water channel is installed on the side facing the upstream water channel of the elevating gate that opens and closes the water channel, and communicates with the discharge port side of the pump to prevent backflow from the downstream water channel. At the time of forced drainage by driving the pump, an open / close door that opens toward the downstream water channel and drains the water from the upstream water channel to the downstream water channel is attached to the inside of the gate toward the downstream water channel, and the driving force is transmitted to the pump. The upper part of the transmission shaft that rotates around the vertical axis extends directly above the pump, and the upper gear box that accommodates the extended upper part of the transmission shaft in a waterproof interior is installed directly above the pump. An electric motor whose internal rotating shaft rotates around the horizontal axis is interchangeably attached to a desired location on the side of the upper gearbox, and rotates around the horizontal axis and the transmission axis of the pump rotating around the vertical axis. Pump structure for attaching the gate equipment, characterized by interlocking coupling the rotary shaft of the electric motor via a gear mechanism which meshes at right angles, which is accommodated in the upper Gya box. The pump structure attached to the gate equipment according to claim 1, wherein the upper gear box has a box shape, and the electric motor is attached to any desired position in any of the three directions of the front, left side, and right side of the side part. The pump structure attached to the gate equipment according to claim 1, wherein the pump is attached to the gate via a pump attachment plate integrally attached to the discharge port side of the pump.

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