JP2503840B2 - Dust remover - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed or movable dust remover for scraping up and removing dust and dirt on a screen installed in a water channel such as an intake of a dam reservoir.

[0002]

2. Description of the Related Art Conventionally, as a dust remover of this type, a wire rope moves up and down along a freely adjustable rake guide to scrape up the dust collected on the upstream side of the screen and transport it on a dust conveyer conveyor. For example, Japanese Utility Model Publication No. 57-51146 discloses a system in which a rake is forcedly lowered in place of a wire rope. Further, Japanese Utility Model Laid-Open No. 60-96430 discloses a dust remover in which a rake guide frame is provided with an elevating frame, and the elevating frame is provided with a dust removing rake that responds to the elevating frame.

[0003]

By the way, in the above-mentioned wire rope system of the related art, since the rake is not a forced descending system, there is a drawback that the rake is not descended by being obstructed by dust and dirt near the water surface. However, there were problems such as chain corrosion and chain erosion, and unstable rake lifting and lowering operations. Further on the lifting frame,
In a dust remover provided with a dust rake that responds to the elevating frame, the dust rake may enter the water while descending. For this reason, there is a concern that dust may intervene between the dust removal rake and the elevating frame to cause malfunction.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wire rope type dust remover having a simple structure, a stable rake raising / lowering operation, and a forced lowering. And

[0005]

According to the first aspect of the present invention,
In order to solve the above-mentioned problems, in the dust remover that scrapes up and removes dust and dirt on the upstream side of a screen installed in a water channel such as an intake port, a frame structure provided on the water channel and the frame structure. The upper rake guide is attached to the screen via a swing drive device so as to be swingable in the front-rear direction, the lower rake guide is vertically movable along the upper rake guide, and the lower rake guide is vertically movable. And a lifting body, a rake having a handle fixed to the lifting body, a hoisting device provided on the upper rake guide, and one side of the hoisting device and the other side of the lower rake guide. A dust remover consisting of a lower rake guide wire rope for forced lowering and raising and a wire rope for forced lowering and raising of the rake with one side connected to the hoisting device and the other side connected to the rake. That.

According to a second aspect of the present invention, the hoisting device is provided with a lower rake guide forcibly descending and ascending wire rope after the rake reaches a lower limit position by the rake forcibly descending and ascending wire rope. The lower rake guide is connected to a control device for reaching the lower limit position.

[0007]

In the dust remover according to claim 1, the lower rake guide is forcibly lowered by the wire rope for lowering and raising the lower rake guide, and the rake is forcibly forced by the wire rope for forcibly lowering and raising the rake. Can be lowered to remove dust.

In the dust remover of the second aspect, the hoisting device can be controlled so that the lower rake guide reaches the lower limit position after the rake reaches the lower limit position to remove dust.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, 1 is a water channel such as an intake, 2 is a water channel 1
, 3 is a waterway top slab, 4 is a rail laid on the slab 3 in parallel with the screen 2, and 5 is a dust carrying-out conveyor installed on the slab 3 in parallel with the rail 4. 6 is a frame structure provided with a carriage 7 traveling on the rails 4, 8 is an upper rake guide swingably connected to the upper part of the frame structure 6, and 9 is a lower rake guide that can be raised and lowered along the upper rake guide 8. Reference numerals 10 and 10 are elevation bodies that can be raised and lowered along the lower rake guide 9, 11 is a rake integrated with the elevation body 10, and the lower rake guide 9 and the elevation body 10 are driven up and down by a hoisting device 12.

The screens 2 are arranged in a number of rows in a horizontal direction with the screen bar being the vertical direction. On the front side of the carriage 7, a front apron 13 continues above the screen 2 and is the same. It is mounted so as to be located in the inclined surface, and a frame structure 6 is erected above it, and an upper rake guide 8 is provided forward and backward with respect to the screen 2 via a horizontal axis 14 near the upper front surface of the frame structure 6. It is mounted so as to be swingable in any direction, and can be swung by a predetermined angle by a driving cylinder 15 mounted between the frame structure 6 and the upper rake guide 8.

The wheels 16 of the carriage 7 are rotated by a driving device 17 installed on the carriage 7. The apron 13 is provided with a chute 18 extending downward and rearward at the upper end thereof, and thereafter. A hopper plate 19 is provided on one side,
The dust is surely dropped onto the conveyor 5. Further, a wiper 20 is provided at the front portion of the upper end of the carriage 7, and scraps of dust are scraped off from the rake 11 by the drive cylinder 20A. In addition, a lifting device 21 which is located on the left and right of the frame structure 6 on the carriage 7 and includes a jib crane.
And the operation room 22 is installed.

The upper rake guide 8 has a frame structure, a hoisting device mounting table 23 is extended behind the upper end, and L-shaped guide rails 24 are formed on the front, rear, left and right.
Further, rope changing sheaves 25 are attached to the left and right lower ends of the upper rake guide 8, respectively, and wire ropes 26 for forcibly lowering and ascending the lower rake guide 9 are wound around them.
The hoisting device 12 and a pair of left and right rope deflection sheaves 27, 28, 29, 30 are disposed on the hoisting device mounting table 23. A pair of left and right wire ropes 26, a rake raising wire rope 31 and a rake forced lowering wire rope 32 are wound around.

The lower rake guide 9 is composed of a pair of left and right guide members 9A and upper and lower connecting members 9B and 9C. The upper connecting member 9B projects left and right from the guide member 9A, and four guide rollers 33 each. Is vertically pivoted, and the guide roller 33 is connected to the guide rail 24 of the upper rake guide 8.
Each of the two surfaces is in contact with and guided by the two surfaces and moves up and down. The lower connecting member 9C is fixed between the left and right guide members 9A, and has a triangular cross section in which the front side is inclined with the lower end of the guide member 9A to form a dust scraping portion 34.

Further, at the upper end of each guide member 9A of the lower rake guide 9, the rope end 26 of the wire rope 26 is provided.
A is fixed, and the rope ends 26B of the wire ropes 26 wound around the sheave 25 are fixed to the lower left and right ends of the upper connecting member 9B. The wire ropes are attached to the front surfaces of the lower ends of the guide members 9A. 32 turning sheaves 35 are pivotally attached.

The elevating body 10 is formed in a substantially rectangular cross-section and is fitted onto the guide members 9A of the lower rake guide 9 respectively, and two guide rollers 36 are vertically attached to each of the four sides. These guide rollers 36 abut on the outer surface of the guide member 9A of the lower rake guide 9, are strongly supported, and are smoothly guided to move up and down. The left and right lifting bodies 10 are integrally connected by a connecting rod 37.

Further, on the rear surface of the lifting body 10, the rake
The handle portions 11A on the left and right of 11 are fixed, and on the front surface of each lifting body 10, a descending wire rope 32 wound around a turning sheave 35.
The rope end 32A of is fixed.

The wire ropes 26, 31, 32 are wound around three sets of winding drums 38, 39, 40.
Both rope ends 26A and 26B wound around the winding drum 38
As described above, the rope end 31A of the wire rope 31 is fixed to the lower rake guide 9, and the rope end 31A of the wire rope 31 (or the rake handle portion).
It is fixed to 11A).

The hoisting device 12 includes a pair of left and right take-up drums 38, 39, 40, a differential gear mechanism 41 connecting the drums 39, 40, and a motor 42 with a cyclo speed reducer for driving the drum 39.
And a motor 43 with a cyclo gear reducer that drives the take-up drum 38 and drives the take-up drum 40 via the differential gear mechanism 41.
The lower rake guide 9 and the lifting body 10,
That is, the rake 11 is forcibly moved up and down. A gear 38A coaxial with the take-up drum 38 meshes with a gear 41B integral with the machine frame 41A, and the gear 41C of the differential gear mechanism 41 and the take-up drum 40 are connected. The motor 43 is connected to a shaft 41E of a gear 41D that meshes with the gear 41B via a chain sprocket 41F. On the other hand, take-up drum
Gear that is connected to 39 and that is coaxial with gear 41G of differential gear mechanism 41
A gear 41I meshes with 41H, a shaft 41J is connected to the gear 41I, and the motor 42 is connected to the shaft 41J via a chain sprocket 41K. Incidentally, 44 is a counterweight, which is fixed to the ends of the wire ropes 31 and 32 on the drum winding side and is guided by a weight guide 45 to move up and down.
Reference numeral 50 is provided in the operation chamber 22 and controls the motors 42 and 43 so as to operate as described later.

Next, the operation of the above embodiment will be described. 2 and 3 show the lower limit position of the rake 11, and scraping of dusts is started from the state in which the rake 11 is swung forward as shown by the chain line in FIG. First, the upper rake guide 8 is drawn to the rear frame 6 side by the driving cylinder 15, the rake 11 is brought into contact with the screen 2, and the dust in the water is scraped to the front surface of the screen 2, and then the hoisting device 12 is moved. Both motors 42,
43 is started and the take-up drums 38, 39, 40 are rotated in the direction shown by arrow a in FIG. Then, rake together with the lifting body 10.
11 and the lower rake guide 9 rise together, and when the lower rake guide 9 reaches the upper limit position first, the motor 43 that drives the winding drum 38 stops. On the other hand, when the rake 11 further rises and reaches the upper limit position A shown in FIG. 1, the motor 42 is stopped and the winding drums 39, 40 are stopped, and the dust scraped up by the rake 11 is scraped off by the wiper 20. Then, it is dropped on the conveyor 5 and carried out from the water channel 1.

When the scraps of dust are completed, the upper rake guide 8 is swung forward by the driving cylinder 15, the motor 42 is started, and the drum 39 shown in FIG.
When the drum 40 is rotated in the direction of arrow B and the drum 40 is rotated in the direction of arrow B, the lower rake guide 9 remains stopped.
When the lifting body 10 descends together with the rake 11, and the lifting body 10 reaches the lower limit of the lower rake guide 9, the motor 43 is started to rotate the winding drum 38 in the direction indicated by the arrow B in FIG. 11 and the lower rake guide 9 are forcibly lowered together to reach the lower limit position, and the rake 11 enters the water,
Then, both motors 42 and 43 are stopped. Rake 11
Even if a large amount of dust is floating in the water while descent, the rake 11 reaches the lower limit position because the rake 11 is stopped with respect to the lower rake guide 9.

In this way, when the rake 11 reaches the lower limit position and scrapes up dust again, the above operation may be repeated in sequence, and the carriage 4 may be moved to move the screen 2.
Dust can be scraped over the entire surface.

As described above, in the above-described embodiment, the frame structure 6 provided on the water channel 1 and the frame structure 6 are attached to the screen 2 via the rocking drive device 15 so as to be rockable in the front-back direction. An upper rake guide 8, a lower rake guide 9 that moves up and down along the upper rake guide 8, and an elevating body 10 that is vertically movable on the lower rake guide 9.
A rake 11 having a handle 11A fixed to the lifting body 10, a hoisting device 12 provided on the upper rake guide 8, and one side of the hoisting device 12 connected to the lower rake guide 9 on the other side. From the lower rake guide forcibly descending and ascending wire ropes 26 connected to, and the rake forcibly descending and ascending wire ropes 31 and 32 having one side connected to the hoisting device 12 and the other side connected to the rake 11. With this configuration, the rake 11 can be forcibly lowered so that the rake 11 can be lowered without being disturbed by dust and dirt near the water surface, and the raising and lowering operation of the rake 11 can be stabilized.

Further, the controller 50 of the hoisting device 12 controls the wire rope 3 for forcibly lowering and raising the rake.
After the rake 11 reaches the lower limit position by 1 and 32, the lower rake guide 9 reaches the lower limit position by the wire rope 26 for lowering and raising the lower rake guide. Even if a large amount of water is floating in the water, the rake 11 descends in a stopped state with respect to the lower rake guide 9, so that the lower limit position can be reliably reached.

The present invention is not limited to the above embodiment, and for example, the hoisting device 12 and the wire ropes 26, 31,
The rake and lower rake guide can be forcibly lowered by appropriately changing the design of the winding method of 32, the number of winding drums, etc. Further, the frame structure 6 is erected directly on the slab 3 without using a truck. Can be fixed.

[0025]

According to the invention described in claim 1, in a dust remover for removing dust and the like, which is caught on the upstream side of a screen installed in a water channel such as an intake port, by scraping it with a rake, a frame structure provided on the water channel. An upper rake guide attached to the frame so as to be capable of swinging in the front-rear direction with respect to the screen via a swing drive device, a lower rake guide that moves up and down along the upper rake guide, and a lower rake guide. A vertically movable body, a rake having a handle fixed to the vertically movable body, a hoisting device provided on the upper rake guide, and one side of the hoisting device with the other side connected. A wire rope for lowering and raising the lower rake guide connected to the lower rake guide, and a wire rope for forcing and lowering the rake in which one side is connected to the hoisting device and the other side is connected to the rake. For dust remover which lifting operation the rake stabilized with can be simplified structure, yet can be inserted into the water wade through the water floating dust such because it forced downward. According to a second aspect of the present invention, the controller causes the lower rake guide to move to the lower limit position by the lower rake guide forced lowering and rising wire rope after the rake reaches the lower limit position by the rake forced lowering and rising wire rope. Since the hoisting device is controlled so that it reaches, even if a lot of dust is floating in the water while the rake is descending,
Since the rake descends in a stopped state with respect to the lower rake guide, the rake can reliably reach the lower limit position without becoming unstable due to dust or escape.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of the present invention.

FIG. 3 is a side view showing a main part of FIG.

FIG. 4 is a plan view showing an engagement relationship between an upper rake guide and a lower rake guide.

FIG. 5 is a plan view showing an engagement relationship between a lower rake guide and a lifting body.

FIG. 6 is a schematic side view showing an example of hanging a wire rope.

FIG. 7 is a schematic configuration diagram showing an example of a hoisting device.

[Explanation of symbols]

 1 Water Channel 2 Screen 6 Frame Structure 8 Upper Rake Guide 9 Lower Rake Guide 10 Elevator 11 Rake 11A Rake Handle 12 Hoisting Device 26 Wire Rope 31 32 Wire Rope 50 Control Device

Claims (2)

(57) [Claims] 1. A dust remover for removing dust and dirt on the upstream side of a screen installed in a water channel such as a water intake port by rake to remove a frame structure provided on the water channel,
An upper rake guide attached to the frame structure so as to be capable of swinging in the front-back direction via a swing drive device, a lower rake guide that moves up and down along the upper rake guide, and a lower rake guide that moves up and down. A freely movable lifting body, a rake having a handle portion fixed to the lifting body, a hoisting device provided on the upper rake guide, and one side of the hoisting device with the other side connected to the lower stage. A lower rake guide forcibly descending and ascending wire rope connected to the rake guide, and a rake forcible descending and ascending wire rope having one side connected to the hoisting device and the other side connected to the rake. Dust remover characterized by. 2. After the rake reaches the lower limit position by the wire rope for forcibly lowering and raising the rake on the hoisting device, the lower rake guide reaches the lower limit position by the wire rope for lowering and raising the lower rake guide. The dust remover according to claim 1, further comprising a control device connected thereto.