JPH057302Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a dust remover used to remove dust that has arrived at a drainage pump station, for example, and in particular, it simplifies the structure of the dust remover, and This invention relates to a dust remover that reduces the amount of movement of a rake that directly scoops up dust to the rear of the dust remover.

[Conventional technology]

Conventionally, a rotary rake type dust remover, for example, has been known as a dust remover used to remove dust that has arrived at a drainage pump station or the like.

This rotary rake type dust remover uses endless chains installed on both the left and right sides of a screen installed in a waterway to circulate the rake along the surface of the screen. This is to remove the debris that washes up at drainage pump stations etc.

Rotary rake type dust removers have the advantage that the rake moves along the surface of the screen, so the rake does not particularly protrude to the rear of the dust remover, making it possible to reduce the space behind the dust remover. It has the following drawbacks.

In other words, a rotary rake type dust remover requires a path at the bottom of the screen for the rake to pass in reverse, and to prevent dust from entering this path, an auxiliary screen must be installed at the bottom of the screen in front. becomes. In addition, even if an auxiliary screen is installed, since the rotary rake type dust remover uses the circulation motion of a chain to circulate and move the rake in a fixed direction, it is necessary to sufficiently remove dust from the rake inversion section at the bottom of the screen. I can't.

Therefore, a dust remover has been devised that has the advantage of the rotary rake type dust remover, that is, the space on the rear side of the dust remover can be reduced, and eliminates the above-mentioned disadvantages of the rotary rake type dust remover.

As such a dust remover, for example, the
-6517, Utility Model 61-6518, Utility Model 61-6519, Utility Model 61-6520 (Including the following 4 items: "Dust removal equipment for waterways")
1987-164323 (``Automatic dust remover''), 1987-114926, 1987-
114927 (hereinafter referred to as ``dust remover''), and Utility Model No. 148621 (``pin rack type dust remover'') in 1987 are also known.

[Problem that the invention attempts to solve]

However, the above-mentioned waterway dust removal device
-6517, Sho 61-6518, Sho 61-6519, Sho 61-6520), the rake support shaft moves within the guide groove formed in the rake guide frame, and the rake guide frame Since the mechanism is raised and lowered along the rail, when the rake section is raised and lowered, the rake guide frame that guides the rake support shaft must also be raised and lowered, which requires extra energy and the mechanism is It has problems such as complexity.

In addition, the automatic dust remover (Utility Model 61-164323)
A machine frame corresponding to a guide plate is installed above the screen, and the upper rake arm and lower rake arm are connected by a pin, and this pin connection part can be submerged in the water or raised from the water surface as the rake goes up and down. Moreover, since the angle of the upper rake arm and lower rake arm is adjusted by the pin connection part, and the rake is a mechanism for scraping up debris in the water, rust etc. can cause the angle of the pin connection part to be adjusted. If the adjustment does not go smoothly, there is a problem that the rake will not be able to scrape up the debris in the water.

In addition, the above-mentioned dust remover (Utility Model 62-114926, Utility Model
62−114927) has guide rails on both sides of the rake,
A total of three guide grooves are formed: a rising guide rail and a descending guide rail, and the rake is integrally equipped with a drive device that raises and lowers the rake, and when the rake moves up and down, the drive device is also integrated. In order to move up and down, extra energy is required due to the weight of the drive device, and if the drive device approaches the water surface or a part of it is submerged in water, the drive device is likely to malfunction. It has the following problems.

In addition, the pin rack type dust remover (utilized in 1988-
148621) is equipped with pin racks and guides on the side plates on both sides of the screen, and the rake body that moves up and down along the side plates is integrally equipped with a reduction motor.
114926, Utility Model Application No. 62-114927).

Furthermore, in all of the above-mentioned conventional dust removers, guide rails are formed on both sides of the screen to guide the rake that moves up and down, and in order to form the guide rails, guide frames or side plates must be provided on both sides of the screen. There is a problem that it must be done.

This invention was devised in order to solve the problems mentioned above, and its purpose is to provide guide rails on both sides of the screen to guide the rake as it ascends and descends. This eliminates the need for the dust remover, simplifying the structure of the dust remover, and reducing the amount of movement of the rake to the rear of the top of the dust remover, allowing it to be installed in locations where there is not much space behind the dust remover. Our goal is to provide dust removers.

[Means for solving problems]

In order to achieve the above objectives, this invention installs a rake lifting shaft horizontally above the screen installed in the waterway so that it can freely rotate around the axis, and a motor is installed to rotate the rake lifting shaft. A rake opening/closing cylinder is mounted on the lifting shaft so as to be rotatable around the axis, a driving part for rotating the rake opening/closing cylinder is provided, a pinion is provided on the rake lifting shaft, and a rack is engaged with the pinion to raise/lower the rake. The rake opening/closing cylinder is provided with a rake arm guiding and holding member formed on the rake arm and guiding and holding the rake arm so as to move up and down in cooperation with the pinion.

Here, a rake plate is provided in the claw part of the rake so that it can be tipped over freely toward the tip side, and a tipping part is provided on the upper side of the screen to tip the rake plate toward the tip side, so that the rake plate that is falling can be returned to its original position. A return mechanism for returning to the state may be provided.

[Effect]

This invention having the above configuration operates as follows.

That is, when scooping up dust, the motor is driven with the claws of the rake in contact with the screen. Driven by the motor, the pinion rotates via the belt transmission part, and the rake arm is moved upwards due to the engagement between the pinion and the rack, and the claws of the rake that directly scrape up the dust also move upwards along the screen. to sweep the dust up above the screen.

After discharging the dust from above the screen, rotate the motor in the opposite direction to lower the rake arm, or before lowering the rake arm,
Rotate the rake opening/closing cylinder to move the pinion position downward. Then, the claw portion of the rake is rotated in a direction away from the screen to place the rake arm in a non-parallel state with the screen. When the rake arm is lowered in this state, as it descends, the claws of the rake move away from the screen and the rake opens downward. When the claw of the rake has descended to the lowest position, the rake opening/closing tube is rotated in the opposite direction to bring the claw of the rake into contact with the screen, thereby collecting dust between the claw of the rake and the screen.

〔Example〕

This invention will be described in more detail below based on embodiments shown in the drawings.

Here, Fig. 1 is a partially cutaway side view, Fig. 2 is a front view, Fig. 3A is a partial side view of the rake claw, and Fig. 3B is a partial side view of the rake claw. .

In the figure, 1 is a screen installed at an angle in the waterway, and this screen 1 is installed to prevent floating objects such as driftwood, aquatic plants, and garbage from flowing in and damaging the drainage pump station. , the screen 1 has a shape with a small head loss.

Reference numeral 2 denotes a chute provided at the top of the screen 1. The chute 2 functions as a guide path for discharging the debris scraped up by the rake 3 out of the waterway. One end is provided adjacent to the upper end of the.

A pair of rakes 3 are movably installed on the surface of the screen 1 to move upward along the surface of the screen 1. The rake 3 is used to remove debris that has arrived at a drainage pump station, etc., and is composed of a rake arm 4 and a claw portion 5. The lower end of the rake 3 is bent at a substantially right angle toward the screen 1 to form a claw portion 5, and a straight rake arm 4 is formed upward from the bent portion at the base end of the claw portion 5. has been done.

A pair of rakes 3 are provided at positions left and right away from the center of the screen 1, and a rake plate 6 is horizontally installed between the left and right claw portions 5. Both left and right ends of the rake plate 6 protrude outward from each claw portion 5 and extend to the vicinity of the left and right side wall surfaces of the screen 1.
The rake plate 6 has a cross section L consisting of a bottom plate 6a and a side plate 6b.
The space formed by the rake plate 6, which has an L-shaped cross section, and the screen 1 is designed to collect dust.

The bottom plate 6a of the rake plate 6 is rotatably connected to the claw portion 5 by a hinge 5a. The hinge 5a is formed at the tip of the claw portion 5, and is connected to a portion of the bottom plate 6a slightly set back toward the side plate 6b from the tip. The rake plate 6 is configured to rotate about the hinge 5a and fall toward the front side of the claw portion 5, that is, toward the screen 1 side. A falling part 7 is provided on the side wall surface of the screen 1 so as to cause the rake plate 6 to fall.

The overturning part 7 is composed of a roller, and is provided at a location located on the movement trajectory of the tip of the rake plate 6 that moves upward, so that the tip of the rake plate 6 that moves up comes into contact with the overturning part 7 located above. The tipping section 7 is designed to tip the rake plate 6 toward the screen 1 side.

Further, a spring 5b, for example, is provided as a return mechanism for returning the overturned rake plate 6 to its original state, that is, to the claw portion 5 side. The spring 5b is made of a coil spring, for example, and has one end connected to the claw portion 5 and the other end connected to the rake plate 6. Note that a torsion spring may be used instead of the coil spring, and the torsion spring may be attached to the hinge 5a.

A rake opening/closing cylinder 8 is installed horizontally above the screen 1. The rake opening/closing cylinder 8 is made of a hollow cylinder, and a rake lifting shaft 11 (described later) passes through the hollow part in the axial direction. It is held movably. A drive connecting plate 8a is protruded from one end of the rake opening/closing cylinder 8.
A piston 9a of a power cylinder for opening and closing a rake, for example, as a drive unit 9 is connected to the tip of a. The rake opening/closing cylinder 8 is configured to rotate as the piston 9a of the drive unit 9 expands and contracts. The drive unit 9 is installed above the side surface of the screen 1.

A pinion 10 that meshes with the rake arm 4 is provided on a rake lifting shaft 11 on which the rake opening/closing cylinder 8 is mounted. The pinion 10 is attached to a position between a pair of movable plates 8b protruding from the rake opening/closing cylinder 8 so as to be rotatable in forward and reverse directions. The pinion 10 is not held by the movable plate 8b, that is, it is attached to the rake opening/closing cylinder 8 in an unrestricted state. The pair of left and right pinions 10 are pivotally supported by the same rake elevating shaft 11, and as the rake elevating shaft 11 rotates, the pinion 10 also rotates in conjunction with the rotation of the rake elevating shaft 11.

On the other hand, the rake arm 4 is formed with a rack 4a that engages with the pinion 10. The rack 4a is made of a pin rack, for example, and functions to mesh with the pinion 10, convert the rotational movement of the pinion 10 into linear movement of the rack 4a, and raise and lower the rake arm 4 on which the rack 4a is formed. Therefore, in the rake arm 4, the rack 4a is
The movable plates 8b are inserted through the pair of movable plates 8b so as to mesh with the movable plates 8b.

Also, the rack 4a of the rake arm 4, which is attached by passing through the inside of the pair of movable plates 8b, is attached to the pinion 10.
A rake arm guiding and holding member 12 is provided between the pair of movable plates 8b so that the rake arm 4 moves up and down while always meshing with the movable plates 8b. For example, two rollers are used for the rake arm guide and holding member 12. The rake arm guide and retainer 12 is provided on the opposite side of the pinion 10 with the rake arm 4 in between.
It has a function of guiding and holding the rake arm 4 as it moves up and down, and serves as a guide when the rake arm 4 moves up and down, and prevents movement of the rake arm 4 in directions other than the axial direction.

Both ends of the rake lifting shaft 11 are supported on both sides of the screen 1 so as to be rotatable forward and backward. Furthermore, as described above, the rake lifting shaft 11 passes through the inside of the rake opening/closing cylinder 8, that is, the rake opening/closing cylinder 8 is externally mounted on the rake lifting shaft 11.
One end of the rake lifting shaft 11 is operatively connected to a motor 13 via a speed reduction mechanism or through a belt transmission section and a speed reduction mechanism. The rake elevating shaft 11 functions to raise and lower the rake arm 4 by rotating a pinion 10 provided on the rake elevating shaft 11 using the rotational force from the motor 13.

Next, the effects based on the configuration of the above embodiment will be explained below.

First, the case of raking up the dust accumulated on the rake plate 6 will be explained.

When the switch is turned on and the motor 13 is rotated in one direction, the rotational driving force of the motor 13 is transmitted to the rake elevating shaft 11 via the deceleration mechanism or via the deceleration mechanism and the belt transmission part, and the rake elevating shaft 11 is rotated in one direction. direction. When the rake elevating shaft 11 rotates, the pinion 10 interlocked with the rake elevating shaft 11 also rotates in the same direction as the rake elevating shaft 11.

As the pinion 10 rotates, the rack 4a meshing with the pinion 10 converts the rotational driving force from the pinion 10 into linear driving force, and moves the rake arm 4 on which the rack 4a is formed upward. rake arm 4
Due to the upward movement, the rake plate 6 provided at the lower end of the rake arm 4 also moves upward along the screen 1.
The dust accumulated on the rake plate 6 is moved to the upper side of the screen 1. When the rake plate 6, which continues to move upward, reaches the upper end of the screen 1, most of the dust accumulated on the rake plate 6 is discharged into a chute 2 formed above the screen 1.

Further, as the rake arm 4 continues to move upward, the rake plate 6 begins to fall toward the screen 1 side (chute 2 side). That is, when the rake plate 6 reaches the upper end of the screen 1, the tip of the rake plate 6 comes into contact with the falling part 7 protruding from the side of the screen 1,
The tip end is obstructed by the falling part 7 and cannot move upward any further. Therefore, a downward force acts on the tip side of the rake plate 6, and this downward force generates a clockwise rotational moment in the drawing around the hinge 5a, and this rotational moment causes the rake plate 6 to It begins to fall toward the screen 1 side (chute 2 side).

Then, when the rake plate 6 has fallen approximately 90 degrees, the rotation of the motor 13 is stopped and the rake arm 4 is rotated.
Stop the upward movement. At this time, the bottom plate 6 of the rake plate 6
Since part a is upside down, dust partially attached to the bottom plate 6a can easily come off and fall into the chute 2. In this way, the dust accumulated on the rake plate 6 can be raked up along the screen 1 and discharged to the chute 2 above the screen 1.

Next, after discharging the garbage into the chute 2, the motor 13 is rotated in the opposite direction. Motor 13
When the pinion 10 is rotated in the opposite direction, the pinion 10 is rotated in the opposite direction through the same transmission mechanism as described above. Due to the reverse rotation of the pinion 10, the pinion 10
The rack 4a that engages with the rake arm 4 moves the rake arm 4 downward.

Due to the downward movement of the rake arm 4, the rake arm 4
The rake plate 6 provided at the lower end also moves downward, the downward force acting on the tip of the rake plate 6 becomes weaker, and when the bottom plate 6a of the rake plate 6 is below the falling part 7, the tip The force acting on it disappears.
As the rake plate 6 falls, a counterclockwise rotational moment is acting on the hinge 5a in the drawing due to the biasing force of the spring 5b, so as the rake plate 6 descends, the force of the spring 5b causes the rake plate 6 to fall. rake plate 6
gradually begins to return to its original state, and when the downward force exerted on the tip of the rake plate 6 by the falling part 7 disappears, the rake plate 6 returns to its original state,
It comes into close contact with the claw part 5.

At this time, while rotating the motor 13 in the reverse direction,
The piston 9a of the drive unit 9 is gradually extended. As the piston 9a expands, the rake opening/closing cylinder 8, which is operatively connected to the piston 9a via the drive connecting plate 8a, rotates clockwise in the drawing. When the rake opening/closing tube 8 rotates clockwise, the movable plate 8b protruding from the rake opening/closing tube 8 also rotates clockwise, and the rake arm 4 held by the pinion 10 and the rake arm guide holding member 12 on the movable plate 8b.
The lower end side gradually begins to open upward.

Therefore, the tip of the rake plate 6 that was in contact with the screen 1 gradually begins to separate from the surface of the screen 1. As the rake plate 6 moves downward, the distance from the surface of the screen 1 increases. By going through such a state, the rake 3 comes to open downward.

After immersing the rake 3 in the water with it open downward and lowering the rake arm 4 to the lowest position, the rotation of the motor 13 is stopped and the piston 9a of the drive unit 9, which had been extended, is retracted. let Due to the reduction of the piston 9a, the rake opening/closing cylinder 8
rotates in the opposite direction, i.e. in the counterclockwise direction in the drawing. When the rake opening/closing cylinder 8 rotates counterclockwise, the movable plate 8b also rotates counterclockwise, and the rake plate 6 at the lower end of the rake 3 gradually approaches the surface of the screen 1, and the rake plate 6
When the tip of the piston 9a comes into contact with the surface of the screen 1, the contraction of the piston 9a of the drive unit 9 is stopped.

At this time, the rake plate 6 collects the debris in the water on the screen 1 side until the lower end side of the rake 3 approaches the screen 1.

Thereafter, the above-mentioned action is repeated to scrape up the dirt in the water along the screen 1 and discharge it above the screen 1.

It should be noted that this invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of this invention.

For example, in the above embodiment, the rack 4a is made of a pin rack, but it is of course possible to use a rack made of a normal uneven surface.

Furthermore, in the above embodiment, the rake arm guiding and holding member 12 is composed of two rollers, but it may also be composed of, for example, a guide groove, and in short, it cooperates with the pinion 10 to guide the rake arm 4 so as to be able to move up and down. Any structure that can hold it is fine.

[Effect of idea]

As is clear from the above description, according to the dust remover according to the invention, the rake consists of a rake arm guiding and holding member and a pinion provided on the rake lifting shaft installed horizontally above the screen, and a rack formed on the rake arm. It can be guided up and down by engaging with. In addition, opening and closing of the rake can be controlled by rotating the rake opening/closing cylinder. Therefore, unlike conventional dust removers, there is no need to provide a guide mechanism on the side of the dust remover to guide the rake as it moves up and down. Therefore, a guide mechanism on the side of the dust remover can be eliminated, and the structure of the dust remover can be simplified.

Furthermore, since the screen is generally installed at a steep angle with respect to the waterway, the upper end of the rake arm that moves upward along the screen does not move much to the rear of the dust remover during upward movement. Therefore, the amount of movement of the rake toward the rear of the upper part of the dust remover can be reduced, and the dust remover can be installed even in locations where there is not much space behind the dust remover.

In addition, the rake claw is provided with a rake plate that can be tipped over toward the tip side, and a tipping section is provided on the upper side of the screen that allows the rake plate to tip over toward the tip side. If a return mechanism is provided to return the rake to its original state, the rake plate will fall over, allowing the dirt adhering to the rake to be easily dropped downward from the rake. This has very practical and beneficial effects, such as being able to reduce as much as possible.

[Brief explanation of drawings]

The drawings show an embodiment of the dust remover according to this invention, in which Fig. 1 is a partially cutaway side view, and Fig. 2 is a partially cutaway side view.
The figure is a front view, FIG. 3A is a partial side view of the claw portion of the rake, and FIG. 3B is a partial side view of the claw portion of the rake. Explanation of symbols, 1... Screen, 2... Shoot, 3... Rake, 4... Rake arm, 4a...
...Rack, 5...Claw part, 5a...Hinge, 5b...
Spring, 6... Rake plate, 6a... Bottom plate, 6b...
Side plate, 7... Falling part, 8... Rake opening/closing cylinder, 8a
... Drive connection plate, 8b ... Movable plate, 9 ... Drive section, 9a ... Piston, 10 ... Pinion, 11
... Rake lifting shaft, 12 ... Rake arm guide and holding material, 13 ... Motor.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A rake elevating shaft is installed horizontally above a screen installed in a waterway so that it can freely rotate around the axis, and a motor for rotating the rake elevating shaft is provided, A rake opening/closing cylinder is mounted on the shaft so as to be rotatable around the axis, a driving part is provided to rotate the rake opening/closing cylinder, a pinion is provided on the rake elevating shaft, and the rack that engages with the pinion to raise and lower the rake is called a rake arm. A dust remover characterized in that the rake opening/closing cylinder is provided with a rake arm guiding and holding member that guides and holds the rake arm in cooperation with the pinion so that the rake arm can move up and down. (2) A rake plate is installed in the claw part of the rake so that the rake plate can be tipped over toward the tip side, and a tipping part is installed on the upper side of the screen to tip the rake plate toward the tip side. Claim No. 1 for utility model registration that provides a return mechanism to return to the state of
Dust remover as described in section.