JPH0329374Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a dust removal device for a screen installed outside a water intake tower constructed in a reservoir or the like.

Conventionally, there are various types of surface water intake or selective water intake facilities constructed at dams, reservoirs, etc.
Surface water intake systems with cylinder gates are well known. In water intake equipment, generally, a water intake tower is installed underwater, a water intake gate is arranged inside the water intake tower, and a dust removal screen is installed outside the water intake tower. Currently, dust removal from these intake tower screens relies on manual labor using boats, pontoons, or the like.

This invention was made in view of the above-mentioned circumstances, and the purpose is to obtain a dust removal device that has a simple structure and can work efficiently.

That is, the dust removal device according to this invention is designed to surround a water intake tower with a screen installed on the outside.
The floating body is arranged to move up and down following the water level, and a dust removal trolley running rail is provided on the upper surface of the floating body and is approximately parallel to the screen surface, and a dust removal trolley with wheels positioned between the upper and lower flanges of the rail is provided on the upper surface of the floating body. The dust removal trolley is mounted so as to run parallel to the screen surface to prevent it from falling over, and the dust removal trolley is provided with a garbage collection, and guide rails are installed perpendicularly to the dust removal trolley at the front and back of the screen side in the running direction. Rakes are arranged opposite to each other and are raised and lowered along the guide rails, and the rakes are configured to be movable up and down about their bases, but not to rotate upward from a horizontal position. . When removing debris near the water surface hanging on the screen using the dust removal device of the present invention, the rake is rotated downward to a hanging state, the dust removal cart is run and stopped at an arbitrary dust removal starting position, and then, When the wire rope is pulled and the dust removal rake is rotated upward to a horizontal position, the wire rope is pulled up as it is, and the rake rises horizontally along the guide rail.
When the rake is raked up the garbage hanging on the screen and approaches its upper limit, the rake is regulated by the guide roller at its base and the tip rotates upwards, tilting the rake and allowing the garbage to slide down and into the garbage collection. Injected.
Once the garbage has been thrown in in this way, when the wire rope is unwound, the rake first rotates downward as if breaking from its base, and the tip of the rake points diagonally downward and maintains a predetermined distance between it and the screen. It is lowered in this state until it reaches its lowering limit.
Therefore, when scraping up the garbage again, the wire rope is wound up, and the rake first rotates upward until it becomes almost horizontal, with the tip of the rake facing between the screens, making it possible to scrape up the garbage. Subsequently, by winding up the wire rope, the rake is raised and the dust on the screen is removed. When the dust removal work at one location is completed, the rake is lowered, and the dust removal cart is driven while keeping the tip of the rake at a predetermined distance from the screen, stopping at the next dust removal position, and then the rake is moved as described above. All you have to do is repeat the work.

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings. First, the first embodiment will be described with reference to FIGS. 1 to 6. Reference numeral 1 denotes a water intake tower, which includes a plurality of columns 5 erected on an underwater foundation 4 in proximity to an embankment body 3 of a dam reservoir 2, etc. Connecting member 5A that connects these
A screen 6 is provided outside in a vertical grid pattern so as to surround the water intake tower 1.

A cylinder gate 9 is provided in the center of the water intake tower 1 and is equipped with a water intake basin 7 that expands and contracts and moves up and down in accordance with the water level, a float 8, etc.
The surface water flowing in from the cylinder gate 9 is led to a water conduit 10 and is discharged. On the outside of the water intake tower 1, a U-shaped floating body 11 is arranged so as to surround it, and on the upper surface of the floating body 11, a dust removal trolley running rail 12 is connected. Horizontal guide rollers 13 and 14 are rotatably attached to the end face of the floating body 11 on the side of the embankment body 3, respectively, and guide rails 15 are installed on the embankment body 3 in correspondence with the guide rollers 13 and 14, respectively, on the water intake tower 1. The floating body 11 is placed in parallel with the guide rail 15 and is guided by the guide rail 15 to move up and down. The dust removal trolley running rail 12 is made of an I-shaped member having upper and lower flanges on both the inner and outer sides, and is arranged so that the inner and outer wheels 17 of each dust removal trolley 16 are located inside and outside between the upper and lower flanges of the running rail 12. It is set in.

As shown in FIGS. 3 and 4, each dust removal truck 16 has a concave central portion and a garbage storage 18.
A dust receiving chute 19 extending diagonally upward from the edge of the screen 6 is attached to the screen 6 side, and a pair of guide rails 20 for raising and lowering the rake are attached opposite to each other in the front and back of the running direction. As shown in FIGS. 5 and 6, this guide rail 20 is made of a channel material, and its bottom plate 2
A guide plate 20B, which is shorter than the flange portion, is fixed to 0A in parallel with the flange portions 20C and 20D. It is curved in the center. Stoppers 21, 22, and 23 are fixed to the upper and lower ends of each guide rail 20. A guide groove is formed on the side of the guide rail 20 to guide the upper guide roller 24, and a lower guide roller 25 is positioned on the opposite inner side of the guide plate 20B and is guided by rolling between the flanges 20C and 20D. are forced to do so. These upper and lower guide rollers 24 and 25 are connected to a roughly L-shaped rake arm 26.
It is pivoted on the outside of the The rake 27 has its base end attached to the horizontal end 26A of the rake arm 26 so as to be movable up and down via a horizontal shaft 28, and is horizontally moved by a stopper 29 fixed to the upper surface of the horizontal end 26A of the rake arm 26. It is restricted from rotating upward from its position. Further, support members 30 extending obliquely downward are fixed to the front and rear ends of the lower surface of the base end of the rake 27, respectively, and the support members 30 are engaged with hook-shaped stoppers 31 fixed to the lower end surface of the rake arm 26. , downward rotation is restricted.

A pulley stand 32 is erected on the upper surface of the curved part of the guide rail 20, and a pulley 33 is attached to the upper end thereof. 34
Winch support stands 35 on which winch supports 35 are mounted are erected at the front and rear, and pulley stands 36 are erected on both the front and rear winch support stands 35, and pulleys 37 are mounted. The winding barrels of both the front and rear winches 34 are rotated via a gear 39 wedged on a common transmission shaft 38, and a manual handle 4 is attached to one end of the transmission shaft 38.
0 is attached. The wire rope 41 wound around the winding barrels of both winches 34 is connected to pulleys 37,
33, and its ends are connected to both outer ends of the connecting rod 42 of the rake 27. Note that, of course, the manual winch 34 may be replaced with a winch driven by an electric or hydraulic motor, and the trolley 16 may also run automatically.

43 is a fender attached to the outer surface of the floating body 11, 44 is a handrail erected on the outer edge of the upper surface of the floating body 11, and this handrail 44 is partially cut out.
A removable handrail or chain 46 is attached between the supports 45, and when moving the garbage on the dust removal trolley 16 to the transport work boat, the dust removal trolley 16 is attached to this part.
6, so that one end of the chain 46 can be removed.

According to the first embodiment of this invention, first, on the operating platform 16A of each dust removal trolley 16, operate the handle 40 to move the rake 27 to the position shown by the two-dot chain line 127 in FIG. rewind,
Move each dust removal cart 16 to the dust removal starting position and stop, and operate the handle 40 again to remove the wire rope 4.
When the screen 1 is wound up, the rake 27 rotates upward around the horizontal shaft 28, scrapes up the dirt in front of the screen 6, and at the same time as the rake 27 comes into contact with the stopper 29 and becomes horizontal, it starts its upward movement.
While in a horizontal state, the rake 27 is guided by the guide rail 20 and ascends to scrape up the dirt in front of the screen 6. When the upper guide roller 24 reaches the curved part and rises, the tip of the rake 27 slopes upward, and at the upper limit of the rise, the rake 27 is shown by the two-dot chain line 227 in FIG.
The state shown in is reached, and the garbage on the rake 27 slides down and falls onto the truck 16 via the garbage receiving chute 19. The garbage that has fallen onto the trolley 16 is shoveled into the garbage reservoir 18 by a worker. continue,
When the manual winch 34 is operated to rewind the wire rope 41, the rake 27, whose weight is greater than the rake arm 26 and the guide rollers 24, 25, rotates with its tip facing downward first, as shown in FIG. The lowering limit is reached in the state shown by the two-dot chain line 327. Once the dust removal work is completed in this manner, the cart 16 may be moved and stopped, and the above-mentioned work may be repeated. When the garbage reservoir 8 of each dust removal trolley 16 is full of garbage, it is moved to the position where the chain 46 is installed, and the garbage is shoveled into the transport work boat placed alongside the floating body 11. Bye.

FIG. 7 shows a second embodiment of this invention, in which the horizontal cross-sectional shape of the water intake tower 1 is particularly cut out at the corners, and the floating body 11 is also shaped accordingly. The second embodiment differs from the first embodiment in that there is only one dust removal trolley 16, and the corners of the running rail 12 that guides it are curved, but the other configurations are exactly the same. The second embodiment has a simpler and more advantageous structure than the first embodiment in that only one truck is required, but since there is no difference in operation and effect, detailed explanation will be omitted.

Since the dust removal device for water intake tower screens according to this invention has the above-mentioned configuration, it is possible to easily and efficiently remove the dust hanging on the water intake tower screen, and in particular, the rake is configured to move up and down. It is possible to reliably remove debris floating at a predetermined depth below the surface of the water, and to reduce the amount of labor required by the workers.Furthermore, maintenance and inspection of the rake can be performed on the floating body, and water intake efficiency is improved. It has a soothing effect.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, in which Fig. 1 is a schematic front view of the whole partially cut away, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a plan view of the dust removal cart, and Fig. Figure 4 is a longitudinal sectional side view of Figure 3, Figures 5 and 6 are cross-sectional plan views of the guide rail, and Figure 7 shows a second embodiment of the present invention, with some parts corresponding to Figure 2 omitted. FIG. 1... Water intake tower, 6... Screen, 11... Floating body, 12... Dust removal trolley running rail, 13, 14...
...Guide roller, 15...Guide rail, 16...
...dust removal trolley, 17...wheels, 18...garbage storage,
19...Dust receiving chute, 20...Guide rail, 20B...Guide plate, 20C, 20D...Flange portion, 21, 22, 23...Stopper, 2
4, 25... Guide roller, 26... Rake arm, 27... Rake, 28... Horizontal axis, 29...
Stopper, 30... Support member, 31... Stopper, 33, 37... Pulley, 34... Manual winch, 41... Wire rope.

Claims (1)

[Scope of utility model registration request] A floating body 11 is arranged so as to move up and down following the water level so as to surround a water intake tower 1 on which a screen 6 is stretched outside, and a screen 1 is provided on the upper surface of the floating body 11.
A dust removal cart running rail 12 is provided which is substantially parallel to the screen 6 surface, and the dust removal cart 16 with wheels 17 placed on the rail 12 between its upper and lower flanges is configured to run parallel to the screen 6 surface so as not to fall over. The dust removal cart 16 is provided with a garbage reservoir 18, and guide rails 20 are disposed perpendicularly and oppositely to the dust removal cart 16 at the front and back of the screen 6 side in the running direction. This dust removal device for a water intake tower screen is provided with a rake 27 that can be moved up and down along a rail 20, and the rake 27 is configured to be able to move up and down around its base, but not to rotate upward from a horizontal position.