JP2002275872A - Gate opening/closing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a gate opening/closing machine at a low position without using a elevated operation plat form. SOLUTION: The gate opening/closing machine comprises a driving unit 25 having a cut-off recessed portion 28 provided on the side of one end of a gear casing 27 for passing a rack bar 9 therethrough and a driven unit 26 having a cut-off recessed portion 28 provided on the side of one end of a gear casing 31 for passing the rack bar 9 therethrough. The driving unit 25 transmits driving force received from a motor 20 via a power transmission mechanism 30 to an opening/closing pinion 29 located at the recessed portion 28. The driven unit 26 transmits driving force received from the driving unit 25 via a connection shat 22, via a power transmission mechanism 32 to the opening/closing pinion 29 located at the recessed portion 28. The driving unit 25 and the driven unit 26 are installed at low positions on both sides of the opening/closing position of the gate door so that the recessed portions 28 are opposed to each other in the cross direction of a water channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate switch for opening and closing a gate used in a drainage station or the like installed in the middle of a waterway (including a small river).

[0002]

2. Description of the Related Art For example, drainage gates are usually installed in relatively small waterways such as rainwater drainage channels and agricultural waterways connected to rivers in order to regulate the amount of drainage to rivers. During a typhoon or torrential rain, the inflow of water into rivers and watercourses temporarily increases and the water level rises sharply. Therefore, even if the drainage gate is fully opened, the water (inland water) in the waterway cannot be sufficiently discharged. In addition, when water (outside water) flows backward from a river into a waterway, the surrounding area is flooded by overflowing water from the waterway, causing a great disaster.

As one means for preventing such a disaster, a pump as a drainage device is recently mounted integrally with the gate so that drainage can be performed even when the water level of the river rises. A pump gate drainage pump station that uses a pump is installed in the middle of the waterway.

The pump gate drainage station is shown in FIG.
(B) As shown schematically in an example of a river back type, a gutter pipe 2 is installed at a required location in the middle of a water channel 1, and a spout 3 is formed at an upstream end of the gutter pipe 2. The waterway 1 is divided into an upstream (branch side) waterway 1a and a downstream (honkawa side) waterway 1b with the mouth 3 as a boundary, and a pump gate 4 is installed at the mouth 3 part. .

The pump gate 4 has a gate door body 6 such as a roller gate door body integrally assembled with a pump 5 such as a vertical axis submersible pump on the upstream side surface portion, and is arranged to be able to move up and down in the drinking mouth 3. An operation console 8 is provided above the drinking spout 3 so as to project horizontally through a vertical support wall 7 erected on a ceiling portion 2a of the gutter tube 2. A gate opening / closing device 10 is provided so that an opening / closing pinion meshes with a rack bar 9 having a pin rack structure extending upward from the upper end of the body 6, and the rack bar 9 is raised and lowered by rotating the opening / closing pinion. When the outer water level Lb of the downstream waterway 1b is lower than the internal water level La of the upstream waterway 1a, the gate door body 6 is opened and closed in the vertical direction integrally with the rack rod 9 as shown in FIG. As shown in FIG. The dust remover 13 mounted on the upstream side of the gate door body 6 so as to be able to move up and down is pulled up to drain the internal water by natural flow. On the other hand, when the external water level Lb becomes higher than the internal water level La, the reverse flow In order to prevent this, as shown in FIG. 5 (b), the gate door body 6 and the dust remover 13 are lowered to prepare for pump operation. 1
3 is operated to forcibly drain the internal water. In FIGS. 5A and 5B, reference numeral 11 denotes the pump 5
Take-up reel for winding the power supply cable 12 to the
Reference numeral 4 denotes a drain gate provided above the downstream end position of the gutter tube 2.

[0006] The gate opening and closing device 10 includes a driving unit 15 and a driven unit 16 as shown in an enlarged plan view of FIG.
The drive unit 15 is provided with a rack bar penetrating portion 18 for passing the rack bar 9 in the vertical direction at the center of the gear casing 17 in the water channel width direction (the direction of arrow X).
An opening / closing pinion 19 is arranged in the gear casing 17 in accordance with the position of the rack rod penetrating portion 18, and a driving force of an electric motor 20 attached to an outer portion of the gear casing 17 is transmitted by a power transmission mechanism (not shown). The driven unit 16 is connected to the gear casing 2 in the same manner as the drive unit 15.
1 at the center in the width direction of the water channel, and receives the rack rod penetration portion 18 and the rack rod penetration portion 18 in the gear casing 21.
The opening and closing pinion 19 is arranged at the position, and the drive unit 1
The driving force extracted from the drive shaft 5 by the connecting shaft 22 is transmitted to the opening / closing pinion 19 via a power transmission mechanism (not shown). Reference numeral 23 denotes a manual operation handle attached to the drive unit 15.

[0007]

However, in the case of the pump gate 4 used in the pump gate drainage station, the gate opening and closing machine 10 for opening and closing the gate door 6 is provided with a rack at the center of the gear casings 17 and 21. Rod penetration 18
Is formed on the ground level G. In order to allow the rack bar 9 to pass through the rack bar penetration portion 18 at the center, the ground level G. Must be installed on the operation table 8 provided at a high position above the position L. In the event of a failure of the electric motor 20, for example, the worker goes up to the operation table 8 at a high position and lifts the manual operation handle 23. There is a problem that it is necessary to operate or repair the electric motor 20. Therefore, the gate switch 10 is moved to the ground level G. so that the worker does not need to go to the operation table 8 at a high position when the electric motor 20 fails. It is desired to be able to be installed at a low position near L, but in the case of the conventional gate opening / closing device 10, as described above, the rack rod penetration portion 18 is formed at the center of the gear casings 17, 21 in the water channel width direction. Due to the structure provided in the section, even if the mounting position of the rack bar 9 is changed, it is inevitable that the rack bar 9 is installed at a high position.

Accordingly, an object of the present invention is to provide a gate switch which can be installed at a low position without using a high operation console.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an opening / closing pinion meshed with a rack rod extending upward from a gate door body arranged in a water channel.
In a gate opening / closing device configured to open / close a gate door by rotating a rack bar by rotating the opening / closing pinion, a driving unit having a power transmission mechanism in a gear casing, and a power transmission mechanism in a gear casing. At each one end position of the driven unit having an opening, a recess is provided for passing a rack bar which is attached to the width end surface of the gate door body and is vertically erected, and an opening / closing pinion connected to the power transmission mechanism in each recess. And the drive unit and the driven unit are installed at a low position near the ground level on both sides of the opening and closing position of the gate door body, such that one end side provided with the concave portion is opposed to the drive unit, The driven units are connected by a connection shaft.

The rack bar attached to the lower end of the width end surface of the gate door can be raised and lowered on both sides of the opening and closing position of the gate door, so that the drive unit and the driven unit can be installed at a low position. Eliminates the need for a high-level operation console.

An opening / closing pinion is meshed with a rack bar extending upward from a gate door body arranged in a water channel, and the rack bar is moved up and down by rotating the opening / closing pinion to open and close the gate door body. In the gate opening / closing device thus constructed, a rack bar attached to one side of both ends of the gate door body in the width direction is provided with a pinion for opening and closing each outer end of two rotating shafts arranged in parallel to the water channel width direction. The two driven shafts are connected to the output shaft of the drive unit while being engaged with each other, and the drive unit is installed at a low position near the ground level above the waterway, thereby making the driven shaft driven. Since a unit can be eliminated, a more compact design can be achieved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a gate switch 24 of the present invention.
This shows an embodiment of the present invention, which is used as a switch of the pump gate 4 of the pump gate drainage station as shown in FIGS. That is, the gate opening / closing device 24 of the present invention has the drive unit 25 and the driven unit 26 corresponding to the left and right end portions of the gate door body, and the drive unit 25 is located at one end side of the gear casing 27,
A notch-shaped concave portion 28 for passing the rack bar 9 is provided in the vertical direction, and an opening / closing pinion 29 is arranged at the position of the concave portion 28 in the gear casing 27, and an electric motor mounted on an outer portion of the gear casing 27. 20 is transmitted to the opening / closing pinion 29 via a power transmission mechanism 30. On the other hand, the driven unit 26 is provided at a position on one end side of the gear casing 31 in the same manner as the driving unit 25. 28 is provided in the vertical direction, and an opening / closing pinion 29 is arranged at the position of the concave portion 28 in the gear casing 31, and a relay shaft 3 described later is provided from the drive unit 25 side.
8, the driving force transmitted via the coupling 43 and the connecting shaft 22 is transmitted to the opening / closing pinion 2 via the power transmission mechanism 32.
9

The power transmission mechanism 30 of the drive unit 25
Is an input shaft 35 provided with a large-diameter gear 33 and a small-diameter gear 34.
And a relay shaft 38 provided with a large-diameter gear 36 and a small-diameter gear 37.
And an output shaft 40 provided with the large-diameter gear 39 and the opening / closing pinion 29 are arranged in the water channel width direction (arrow X direction) in order from one side of the water channel direction (arrow Y direction) to the other side. The drive gear 42 on the drive shaft 41 of the electric motor 20
And the large-diameter gear 33 and the small-diameter gear 34 and the large-diameter gear 3.
6 and the small diameter gear 37 and the large diameter gear 39 are meshed with each other.
The power transmission mechanism 32 of No. 6 has a configuration in which a combination of the relay shaft 38, the small-diameter gear 37, the large-diameter gear 39, and the output shaft 40 of the power transmission mechanism 30 in the drive unit 25 is symmetrically arranged in the water channel width direction. The relay shafts 38 of the unit 25 and the driven unit 26 are connected to each other via a connection shaft 22 connected by a coupling 43.

As shown in FIGS. 2 and 3, the gate switch 24 of the present invention having the above-described structure is provided on the ceiling 2a of the gutter tube 2 so as to correspond to the positions of the right and left door grooves 44 inside the gutter tube 2. The drive unit 25 and the driven unit 26 are installed so as to face each other such that the concave portion 28 is located inside the water channel width direction (the direction of arrow X), and the concave portions 28 of the respective units 25 and 26 are installed.
The opening / closing pinion 29 is meshed with the rack bar 9 extending from the gate door body 6 so that the gate door body 6 can be moved up and down without interfering with the drive unit 25 and the driven unit 26.

Therefore, the mounting position of the rack bar 9 with respect to the gate door 6 is changed from the upper end to the width end. More specifically, the gate door body 6 includes upper and lower main rollers 45 provided at both left and right width end portions.
The lower part of the left and right width end faces of the gate door body 6 having such a configuration is adapted to be moved up and down along the vertical door stop rails 46 provided in the four parts. The brackets 47 are fixedly mounted so as to protrude, and the lower ends of the rack bars 9 having a length projecting upward by a required amount from the height of the gate door body 6 are mounted on the brackets 47.

Using the gate opening / closing device 24, the gate door 6
In order to open the drinking spout 3 by raising it from the descending state as shown by the solid line in FIG. 2, the motor 20 is driven to rotate the opening / closing pinion 29 of the drive unit 25 via the power transmission mechanism 30. By transmitting the rotational force to the opening and closing pinion 29 via the power transmission mechanism 32 of the driven unit 26 by the connecting shaft 22, the rack bar 9 is raised. At this time, since the lower end of the rack bar 9 is attached to the lower end of the width end surface of the gate door body 6 via the bracket 47, the gate door body 6 can be sufficiently opened as shown by a two-dot chain line. Can be raised. Therefore, the necessary function of the pump gate is not impaired.

In the case of the gate opening / closing device 24 of the present invention, a driving unit 25 and a driven unit 26 which face each other in the width direction of the water channel.
A recess 28 for passing the rack bar 9 is provided at each inner end position of the drive unit 25 and the driven unit 26 by attaching the rack bar 9 to the width end of the gate door body 6.
Is the ground level G. on both sides of the opening and closing (elevating) position of the gate door body 6. It can be installed at a low position near L. Therefore, when the electric motor 20 or the like breaks down, the operator can operate the manual operation handle 23 at a low position without repairing the electric motor 20 or repair the electric motor 20 or the like without climbing to a high position.

As described above, the ground level G. Since the gate switch 24 can be installed at a low position near L, even if the gate switch 24 is used for opening and closing the pump gate of the pump gate drainage pump station constructed on the plain, the gate switch 24 becomes a projection on the plain. Therefore, it is possible to reduce the size and not to significantly impair the aesthetic environment. Further, it is advantageous because there is no work at a high place as compared with the conventional case where the operation console 8 is provided at a high position. In addition, since the installation of the gate door body 6 and the pump 5 can be performed by inserting the gutter pipe 2 from above after the concrete work of the gutter pipe 2 is completed,
The construction period can be shortened and the cost can be reduced.

Next, FIG. 4 shows another embodiment of the present invention. In place of the gate opening / closing device 24 having the driving unit 25 and the driven unit 26 as shown in FIGS. Gate switch 24A having only 48
It is what it was. That is, the output shaft 50 that extracts the driving force of the electric motor 20 installed outside the gear casing 49 through a power transmission mechanism (not shown) is connected to one end of the gear casing 49 in the direction of the water channel. The gutter pipe 2 which is arranged in the width direction and located at a position adjacent to the opening / closing position of the gate door body 6 in the channel direction and at a low position near the ground level.
A drive unit 48 is provided at the center of the ceiling 2a in the width direction of the ceiling 2a, and two left and right rotation shafts 52 arranged at both ends of the output shaft 50 in parallel to the water channel width direction are coupled. The opening / closing pinions 29 are attached to the outer ends of both rotating shafts 52, and the opening / closing pinions 29 are attached to the lower end of one side (downstream side surface) of both ends in the width direction of the gate door body 6. The gate opening / closing device 24A has a configuration in which a lower end is attached to a position and meshed with a vertically-standing rack bar 9 to open and close the gate door body 6 with power from one drive unit 48. 1 to 3 are denoted by the same reference numerals.

In the case of the gate opening / closing device 24A shown in FIG. 4, only the drive unit 48 has no driven unit and the drive unit 48 is installed at the center in the width direction of the water channel. Is waterway 1
This is advantageous because it can be more compact than the gate switch 24 shown in FIGS. 1 to 3.

In the above-mentioned embodiment, the so-called river back type in which the gate door body 6 in which the pump 5 is assembled on the upstream side surface portion is disposed at the upstream end portion of the gutter tube 2 is shown. That the gate door body 6 assembled to the part can be implemented in the same way for the river surface type in which the gate door body 6 is disposed at the downstream end of the gutter pipe 2, and that the gate door body 6 may be a slide gate type, Of course, the present invention can be similarly applied to gates other than the pump gate, and various changes can be made without departing from the spirit of the present invention.

[0023]

As described above, according to the gate opening / closing apparatus of the present invention, the opening / closing pinion is engaged with the rack bar extending upward from the gate door body arranged in the water channel, and the opening / closing pinion is rotated. In the gate opening / closing device which raises / lowers the rack bar to open and close the gate door body, each of a drive unit having a power transmission mechanism in a gear casing and a driven unit having a power transmission mechanism in a gear casing. At one end position, there are provided recesses for passing rack bars that are vertically attached to the width end surface of the gate door body, and an opening / closing pinion connected to a power transmission mechanism is provided in each of the recesses; The unit and the driven unit are placed in a low position near the ground level on both sides of the opening and closing position of the gate door body, with one end side provided with the concave part facing the opposite side. Since the drive unit and the driven unit are connected by a connecting shaft, when the motor or the like breaks down, the operator does not have to go up to the high position to perform manual opening and closing operations and repair the motor etc. This is advantageous because it can be carried out, and even if it is adopted for the gate of a drainage pumping station on a plain, the gate opening and closing machine does not become a projection on the plain, making it possible to reduce the size and increase the overall height. Can be kept low and the aesthetic environment can be kept good.Moreover, since there is no need to provide an operation table at a high position, it is possible to contribute to shortening of the construction period and cost.
Also, an opening / closing pinion is engaged with a rack bar extending upward from the gate door body arranged in the water channel, and the rack bar is raised and lowered by rotating the opening / closing pinion to open and close the gate door body. In a gate opening / closing device, a rack rod which is attached to one side of both ends in the width direction of a gate door body is engaged with opening / closing pinions at each outer end of two rotating shafts arranged in parallel to the water channel width direction. , Said 2
The inner end of each of the rotating shafts is connected to the output shaft of the drive unit, and the drive unit is installed at a low position near the surface level above the waterway, thereby further reducing the overall size. And is advantageous when applied to a gate of a narrow waterway.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a gate switchgear of the present invention.

FIG. 2 is a side view showing an example in which the gate switch of the present invention is used for a pump gate of a pump gate drainage pump station.

FIG. 3 is a view in the direction of arrows III-III in FIG. 2;

FIG. 4 is a plan view showing another embodiment of the present invention.

FIG. 5 shows an example of a conventional pump gate drainage pump station, wherein (a) is a schematic diagram showing an operation state of a pump gate when an outer water level is lower than an inner water level, and (b) is an outer view than an inner water level. It is a schematic diagram showing an operation state of a pump gate when a water level is high.

FIG. 6 is a plan view showing an example of a conventional gate switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterway 6 Gate door body 9 Rack bar 20 Electric motor 22 Connecting shaft 24, 24A Gate switch 25 Drive unit 26 Follower unit 28 Depression 29 Opening and closing pinion 30, 32 Power transmission mechanism 48 Drive unit 50 Output shaft 52 Rotary shaft

Claims (2)

[Claims] An opening / closing pinion is engaged with a rack bar extending upward from a gate door body arranged in a water channel,
In a gate opening / closing device configured to open / close a gate door by rotating a rack bar by rotating the opening / closing pinion, a driving unit having a power transmission mechanism in a gear casing, and a power transmission mechanism in a gear casing. At each one end side of the driven unit having a recess, a recess is provided for passing a rack bar which is attached to the width end surface of the gate door body and is vertically erected, and an opening / closing pinion connected to the power transmission mechanism in each recess. And the drive unit and the driven unit are installed at a low position near the ground level on both sides of the opening and closing position of the gate door body, such that one end side provided with the concave portion is opposed to the drive unit, A gate switch having a configuration in which driven units are connected by a connection shaft. 2. An opening and closing pinion is meshed with a rack rod extending upward from a gate door body arranged in a water channel.
In the gate opening / closing device in which the rack bar is moved up and down by rotating the opening / closing pinion to open and close the gate door body, a rack bar attached to one side of both ends in the width direction of the gate door body is provided with a waterway. An opening and closing pinion at each outer end of two rotating shafts arranged in parallel in the width direction is engaged with each other, and each inner end of the two rotating shafts is connected to an output shaft of a driving unit, and the driving unit Characterized in that it is installed at a low position near the ground level above a waterway.