JP2002322633A - Position changing device for trashrack rake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact position changing device for a trashrack rake allowing reduction in an installation space, easy maintenance and inspection without requiring no entrance into a water passage, and elimination of a fixing device required separately for long-term retention in non-trashrack rake position. SOLUTION: This trashrack rake 9 with a built-in solid matter catching screen 8 is arranged in the water passage 1. The trashrack rake 9 is held selectively between a raking position and the non-raking position by means of the position changing device 11. The position changing device 11 is constructed of a pair of left and right cylinder devices. The cylinder device is provided with a brake motor 15 having a vertical axial line, a gear reducing part 16, a cylinder part 17, and the like, and an upper end part of an inner cylinder 17B corresponding to a piston rod in the cylinder part 17 is connected to the trashrack rake 9 to move it in the vertical direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position converter for a dust cleaner which converts a dust cleaner installed in a water channel into two positions, a dust removing position and a non-dust removing position, and holds the dust removing device.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
A water stop gate door body 2 is provided at the boundary between the upstream water path 1A and the downstream water path 1B in the water path 1 so as to be able to move up and down, and a drainage pump 3 composed of a horizontal shaft submersible pump is installed on the water stop gate door body 2. A flap that allows the flow from the upstream water channel 1A to the downstream water channel 1B and opens and closes so as to stop the flow from the downstream water channel 1B to the upstream water channel 1A is provided at an opening of the drain pump 3 facing the downstream water channel 1B. The valve 4 is attached, and the lower end of the spindle 5 is connected to the water shutoff gate door 2, and the upper end of the spindle 5 is manually or automatically equipped with a gear box 6A, an operating handle 6B or an electric motor (not shown). A pump gate 7 having a structure incorporated and connected to an opening / closing means 6 is known.

According to the pump gate 7, as shown in FIG. 6, the drainage pump 3 is operated in a state where the water stop gate door 2 is lowered and the water passage 1 is closed, so that the upstream water passage 1
The water of A is sucked from the opening of the drain pump 3 facing the upstream water passage 1A, and the water pressure pushes the flap valve 4 open and is discharged (drained) to the downstream water passage 1B. Further, the water stop gate door body 2 is lifted by the opening / closing means 6, and the water channel 1 is lifted.
Is opened, the water in the upstream water channel A1 can naturally flow down to the downstream water channel 1B.

[0004] That is, when the drainage pump 4 is operated with the water shutoff gate door 2 closed, the water in the upstream water passage 1A flows toward the downstream water passage 1B and pushes the flap valve 5 open to open the downstream water passage 1B. When the operation of the drain pump 3 is stopped with the water stop gate door 3 closed, the upstream water channel 1A
And the drainage to the downstream waterway 1B is stopped, and the flap valve 4 is automatically closed by the combined action of its own weight and the water pressure of the downstream waterway 1B, and from the downstream waterway 1B to the upstream waterway 1A. Backflow is prevented.

On the other hand, on the upstream side of the pump gate 7, that is, on the upstream water channel 1A in the water channel 1, a dust remover 9 incorporating a screen 8 for collecting solids is installed.
The solid matter collected in the above is scraped up by the rake 9A of the dust remover 9 and collected in the dust collecting box 10, thereby preventing the solid matter from being sucked into the drain pump 3 along with the water in the upstream channel 1A. Thus, the drainage pump 3 is protected.

That is, as shown in FIG. 7, the screen 8 is a bar type screen having a stitch width of 50 mm and a plurality of flat bars erected, and the dust remover 9 extends vertically on both sides in the width direction. Frame members 9B, 9B,
A drive shaft 9C and a driven shaft 9D extending in the width direction and rotatably supported near the upper and lower ends of the frame members 9B, 9B, and a drive shaft 9 inside the frame members 9B, 9B.
C, driving sprockets 9E, 9E fixed to the driven shaft 9D inside the frame members 9B, 9B, and driving sprockets 9E, 9E along the inside of the frame members 9B, 9B. Endless drive chains 9G, 9G extended over driven sprockets 9F, 9F, and an input sprocket 9H fixed to a drive shaft 9C adjacent to one drive sprocket 9E.
And an output sprocket 9 fixed to the output shaft of the electric motor 9I.
j and an endless output chain 9K wound around the input sprocket 9H, and the like.
The vicinity of the upper end of B is supported so as to be able to turn vertically about a fulcrum 9L shown in FIG.

The rake 9A is formed in a comb-like shape protruding from the back side of the mesh portion of the screen 8 to the front side. The rake 9A straddles the endless drive chains 9G, 9G, and is connected to the drive chains 9G, 9G. A plurality of solids are attached so as to be able to move at the same time, and follow the drive of the drive chains 9G, 9G, while entering the interpupillary area from the lower side of the screen 8 and retreating from the upper side, the solid matter collected by the screen 8 The solid matter is lifted and moved, and the solid matter is opened at the upper end reversal part and collected in the dust collection box 10.

[0008] The dust remover 9 is moved by the position converting device 11.
The position is converted into two positions, a dust removal position indicated by a solid line in FIG. 6 and a non-dust removal position indicated by a two-dot chain line. The position changing device 11 is composed of a wire rope knot 11A made of a wire rope and a drum 1 for winding or unwinding the wire knot 11A.
1B and a winch provided with an electric motor and a speed reducer (not shown) for rotating the drum 11B forward and backward,
The tip end of the torsion medial node 11A is connected to the lower free end of the dust remover 9.

Therefore, when the water stop gate door body 2 is lowered by the opening / closing means 6 to close the water channel 1 and operate the drainage pump 3, the dust converter 9 is moved to the dust removal position indicated by the solid line by the position conversion device 11. When the water drainage pump 3 is held to protect the drainage pump 3 and the water shutoff gate door body 2 is lifted by the opening / closing means 6 to open the water channel 1, the dust converter 9 is indicated by the two-dot chain line by the position conversion device 11. By pulling up and holding at the dust removal position, the upstream water channel A due to the resistance of the screen 8
This prevents the ability of the natural flow from 1 to the downstream water channel 1B to decrease.

[0010]

However, although the conventional position converting device 11 is relatively simple in structure, it has a drum 11B, and an electric motor and a speed reducer (not shown) for rotating the drum 11B forward and reverse. ), A large installation space is required, and additional equipment such as the machine base 12 and the management bridge 13 must be provided. In addition, a debris-borne node 11 such as a wire rope connected to the lower free end of the dust remover 9.
In the maintenance and inspection of A, it is necessary to enter the waterway 1A and perform the maintenance and inspection. Furthermore, when the dust remover 9 is pulled up and held at the non-dust removing position shown by a two-dot chain line for a long time,
Since there is a possibility that “spread” may occur in A, there is a problem that a fixing device for the dust remover 9 must be separately provided.

Therefore, the present invention reduces the installation space by making it compact, makes it possible to easily perform maintenance and inspection without entering the water channel, and separates the case where it is held in the non-dust removing position for a long time. An object of the present invention is to provide a position converter for a dust remover that can eliminate the need for a fixing device that has been required.

[0012]

In order to achieve the above object, a position converter for a dust remover according to the present invention converts a dust remover installed in a water channel into two positions, a dust removing position and a non-dust removing position. A position converter for a holding dust remover, characterized in that the position converter is constituted by a cylinder device which is connected to the dust remover and turns the dust remover vertically or vertically.

According to the present invention, by setting the axis of the cylinder device constituting the position conversion device to be vertical and operating the cylinder device, the dust remover is raised from the dust removal position to the non-dust removal position. The dust remover can be moved from the dust removing position to the non-dust removing position by operating the cylinder device by setting the axis of the cylinder device obliquely and operating the cylinder device. It can be swung upward and held, and swung downward and held from the non-dust removing position to the dust removing position.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment in which a dust remover is held at a dust removing position according to the present invention, and FIG.
Is a right side view of FIG. 1, and FIG. 3 is an enlarged sectional view showing an embodiment of the position conversion device. The same or corresponding portions as those in the conventional example of FIGS. 6 and 7 are denoted by the same reference numerals, and the description of the overlapping structure and operation will be omitted.

In FIG. 1 to FIG.
Is constituted by a pair of left and right cylinder devices, has a vertical axis, is installed on the top of the side walls 14, 14 of the upstream water channel 1A, and the upper end of the piston rod is connected to the dust remover 9. The position conversion device 11 includes a brake motor 15 having a vertical axis, a gear reduction unit 16, a cylinder unit 17, and the like. The brake motor 15 is mounted and fixed on a gear box 18 containing a gear reduction unit 16, and an output pinion 15A fixed to an output shaft thereof is
The input large gear 16 </ b> A of the gear reduction unit 16 is engaged.
The cylinder part 17 includes an outer cylinder 17A having a vertical axis,
The outer cylinder 17A includes an inner cylinder 17B corresponding to a piston rod housed in a vertically movable manner, a ball screw 17C for converting rotary motion into linear motion, and a ball nut 17D. The outer cylinder 17A is provided with a gear via a bracket 17E. Box 1
8 and the output large gear 1 of the slip clutch 17F and the gear reduction unit 16 are provided at the lower end of the ball screw 17C.
6B is fixed. The lower end of the inner cylinder 17B is connected to the ball nut 17D, and the upper end is connected to the dust remover 9. Therefore, by rotating the output shaft of the brake motor 15 in the forward and reverse directions and rotating the ball screw 17C in the forward and reverse directions, the ball nut 17D and the inner cylinder 17B are raised and lowered, and the dust remover 9 can be raised and lowered. .

On the other hand, on both left and right sides of the dust remover 9, a guide roller 20 A on the dust remover 9 side and a vertical axis line which guides the guide roller 20 so as to freely roll are provided at two places in the upstream water passage 1 A and the floor 19. And a guide 20B having a guide 20B having

In the above configuration, as shown in FIG. 1, when the inner cylinder 17B of the pair of left and right cylinder devices constituting the position conversion device 11 is positioned at the lower limit position, the dust remover 9 is held at the lower limit dust removal position. Then, most of the solids collecting screen 8 is submerged in the upstream water channel 1A to collect the solids. Further, the solid matter collected by the screen 8 is scraped up by a rake 9A of a dust remover 9 and the dust collector 1
0, so that solid matter can be collected in the upstream waterway 1
It is possible to protect the drain pump by preventing it from being sucked into the downstream drain pump (not shown) accompanying the water of A.

On the other hand, when the output shaft of the brake motor 15 in the position conversion device 11 is rotated in the forward direction, the ball screw 17C rotates in the forward direction, and the ball nut 17D and the inner cylinder 17B rise. As a result, the dust remover 9 is pushed up by using the guide devices 20 at two upper and lower locations and a total of four locations, and the ball nut 17D and the inner cylinder 17B are raised to the upper limit position and positioned. It is raised and held at the non-dust removing position shown in FIG. 4, and it is possible to avoid a decrease in the natural flow ability due to the resistance of the screen 8.

On the other hand, when the output shaft of the brake motor 15 in the position conversion device 11 is rotated in the opposite direction, the ball screw 17C rotates in the opposite direction, and the ball nut 17D and the inner cylinder 17B descend. As a result, the dust remover 9 is pulled down with the guide devices 20 at the upper and lower two places and the total four places being guided, and the ball nut 17D and the inner cylinder 17B are lowered to the lower limit position to be positioned. It can be returned to the dust removal position shown in FIG.

As described above, by the operation of the pair of left and right cylinder devices constituting the position conversion device 11, the dust remover 9 is raised from the dust removal position to the non-dust removal position, and is lowered from the non-dust removal position to the dust removal position. In addition to being able to be held, it can be configured more compactly than the winch-type position conversion device 11 described with reference to FIG. Space can be reduced. In addition, maintenance and inspection can be easily performed without entering the upstream waterway 1A. Further, even when the dust remover 9 is held at the non-dust removing position in FIG. 4 for a long time, the position does not naturally change unlike the conventional example, so that the fixing device conventionally required is unnecessary. Can be

In the above-described embodiment, the pair of left and right cylinder devices constituting the position conversion device 11 are set to have their axes perpendicular to each other, and the cylinder devices are operated to raise and lower the dust remover 9. As described in FIG. 5,
As shown in the figure, the vicinity of the upper end of the dust remover 9 is supported by a fulcrum 9L so as to be able to turn vertically, and the axes of a pair of left and right cylinder devices constituting the position conversion device 11 are set obliquely upward, By operating the cylinder device,
The dust remover 9 is pivoted upward from the dust removal position shown by the solid line to the non-dust removal position shown by the two-dot chain line, and is held by pivoting downward from the non-dust removal position shown by the two-dot chain line to the dust removal position shown by the solid line. May be configured.

Also, instead of the ball screw type cylinder device described in the above embodiment, a hydraulic cylinder device,
The position conversion device 11 may be constituted by an air cylinder device or a hydraulic air cylinder device.

Further, a pump gate 7 in which a drainage pump 3 composed of a horizontal axis submersible pump is installed on the water stop gate door 2.
Although the dust remover 9 is installed at the upstream position, the dust remover 9 is installed not only at the upstream position of the pump gate 7 but also at the upstream position of the pump well or the water absorption tank where the drainage pump is installed. It goes without saying that it will be installed.

[0024]

As described above, since the position conversion device for a dust remover according to the present invention is constituted, the following special effects can be obtained.

That is, by setting the axis of the cylinder device constituting the position conversion device to be vertical and operating the cylinder device, the dust remover is raised from the dust removal position to the non-dust removal position and held. The dust remover can be lowered from the dust removing position to the dust removing position and held, and by setting the axis of the cylinder device obliquely and operating the cylinder device, the dust remover is turned upward from the dust removing position to the non-dust removing position. Not only can it be swung downward from the non-dust removing position to the dust removing position and held, but it can be more compact than conventional winch type Since no additional equipment is required, the installation space can be reduced. Further, maintenance and inspection can be easily performed without entering the waterway. Moreover,
Even when the dust remover is held at the non-dust removing position for a long period of time, there is no spontaneous positional change unlike the related art, so that the conventionally required fixing device can be eliminated.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of a state in which a dust remover is held at a dust removing position according to the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is an enlarged sectional view showing an embodiment of the position conversion device.

FIG. 4 is a right side view showing a state where the dust remover is held at a non-dust removing position.

FIG. 5 is a right side view showing another embodiment of the present invention.

FIG. 6 is a vertical sectional side view showing an example of use of a dust remover provided with a conventional position conversion device.

FIG. 7 is a schematic front view showing an example of a dust remover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterway 9 Dust remover 11 Position conversion device

Claims (1)

[Claims] 1. A position converter for a dust remover for converting a dust remover installed in a water channel into two positions, a dust removing position and a non-dust removing position, and holding the dust converting device. A position converter for a dust remover, comprising a cylinder device for vertically moving or vertically turning the dust remover.