JP2013253371A - Water intake lifting device, and inclusion removal member for water intake lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent guide rails from being clogged by inclusions with a simple configuration to enable smooth ascent and descent of a rake.SOLUTION: A dust remover 1 is disposed on the upstream side of a water intake screen of a power plant, and includes a rake 2 with side rollers 3 provided on both sides thereof and guide rails 4 each of which has a U-shaped cross section and vertically extends and to which the side rollers 3 are fitted. The rake 2 ascends and descends while the side rollers 3 are guided by the guide rails 4. The dust remover 1 is equipped with inclusion removal members 5, each of which is provided on each of both side parts of the rake 2, projects beyond the side roller 3 at least in one advancing direction of an ascent direction D1 and a descent direction D2 of the rake 2, and removes inclusions in the guide rails 4 in accordance with movement of the rake 2 in the advancing direction.

Description

  The present invention relates to a water intake elevating device such as a dust remover or a net, and an inclusion removal member for a water intake elevating device that stabilizes and smoothes the elevating of the water intake elevating device.

  For example, in a dam of a hydroelectric power plant, rivers are dammed and water is taken in, so a large amount of driftwood and garbage flows from the upstream side. For this reason, a water intake screen in which iron plates are combined in a lattice shape is installed, and this water intake screen prevents and suppresses driftwood and dust from flowing into the water intake (inside the facility). In addition, if dust or the like adheres to the intake screen and the state continues for a long time, the intake amount may be reduced, which may hinder power generation. For this reason, the dust adhering to the water intake screen is lifted and removed by a dust remover.

  As this dust remover, a rake open / close type and a rake rotary type are known. The rake open / close type dust remover is provided with side rollers on both sides of a rake that lifts up dust and the like, and these side rollers are mounted and fitted on guide rails extending in the vertical direction. Then, by winding and lowering the wire rope attached to the rake, the rake moves up and down (opens and closes) while the side rollers are guided by the guide rail.

  The rake rotating dust remover receives dust etc. with a berth screen and circulates a roller chain having a rake along the berth screen while guiding it with a guide rail. As a result, the dust adhering to the berth screen is raked up and removed. Further, in such a rake rotation type dust remover, a technique for preventing the roller chain from falling off the guide rail by providing an escape prevention edge on the guide rail is known (see, for example, Patent Document 1). ).

Japanese Utility Model Publication No. 58-149417

  By the way, if inclusions such as driftwood and dust are clogged with the guide rail of the dust remover, the movement of the side rollers and roller chains will be hindered, and the side rollers and roller chains will fall off the guide rails, and will be lifted and removed by rake. Will be stopped, and the operation of the power plant will be hindered. For this reason, it is known that the escape rail is provided on the guide rail of the rake rotary dust remover as in Patent Document 1, but the escape rail must be provided over the entire length of the guide rail. Cost.

  Further, even if the escape prevention edge is provided, the guide rail cannot be prevented from being clogged with the inclusion itself, so that the movement of the roller chain is hindered and the rake cannot be lifted up and removed. Furthermore, the escape prevention edge of Patent Document 1 can be applied only to a rake rotary dust remover, difficult to apply to a rake open / close type, and has low versatility.

  Accordingly, an object of the present invention is to provide a water intake elevating device and a water intake elevating device inclusion removing member that prevent the inclusions from being clogged in the guide rail with a simple configuration and enable smooth elevating. And

  In order to solve the above-mentioned problem, the invention described in claim 1 is characterized in that it is disposed on the upstream side of the water intake screen of the power plant, and is provided with an elevating body provided with side rollers on both sides and a U-shaped cross section. A guide rail that extends in a direction and engages with the side roller, and is a water intake elevating device that moves up and down while the side roller is guided by the guide rail. A driftwood provided in the guide rail as the lifting body projects in the traveling direction of at least one of the ascending direction and the descending direction of the lifting body and protrudes ahead of the side roller. And an inclusion removing member for removing inclusions including dust.

  According to this invention, when the elevating body moves in the traveling direction (at least one of the ascending direction and the descending direction), the inclusions in the guide rail ahead of the side rollers are removed by the inclusion removing member.

  The invention according to claim 2 is provided on the upstream side of the water intake screen of the power plant, and a lifting body provided with side rollers on both sides, and the side roller is fitted in the vertical direction with a U-shaped cross section. In the water intake lifting device that moves up and down while the side roller is guided by the guide rail, a water intake for removing inclusions including driftwood and dust in the guide rail Inclusion removal member for the lifting device, which protrudes ahead of the side roller in the advancing direction of at least one of the ascending direction and descending direction of the lifting body, and the mounting portion attached to the side of the lifting body, A removing unit that removes the inclusions in the guide rail as the elevating body moves in the traveling direction.

  According to this invention, when the attachment portion is attached to the side portion of the lifting body, the removal portion protrudes ahead of the side rollers in the traveling direction of the lifting body. And when the raising / lowering body moves in the advancing direction, the inclusion in the guide rail ahead of the side roller is removed by the removing portion.

  According to the first and second aspects of the present invention, the inclusions in the guide rail are removed by the inclusion removal member (removal part) as the elevating body moves up and down. Thus, it is possible to maintain smooth elevation of the elevating body. Moreover, since the inclusion removal member protrudes in the traveling direction before the side roller, the inclusion removal member removes the inclusion before the side roller contacts the inclusion. As a result, it is reliably prevented that the movement of the side roller is hindered by the inclusions, and the lifting body can be lifted and lowered more smoothly.

  Further, according to the first aspect of the present invention, since the inclusion removing member is simply provided on both sides of the lifting body, it is possible to maintain smooth lifting of the lifting body at low cost. Similarly, according to the invention of claim 2, since it is a simple configuration including only the attachment portion and the removal portion, it is possible to maintain smooth raising and lowering of the lifting body at low cost. And according to invention of Claim 1, 2, smooth raising / lowering is attained in the existing and existing water intake raising / lowering apparatus only by providing an inclusion removal member.

It is a front view which shows the dust remover which concerns on embodiment of this invention. It is a side view which shows the inclusion removal member periphery of the dust remover of FIG. It is the top view (a) which shows the inclusion removal member of the dust remover of FIG. 1, a front view (b), and a side view (c). It is a perspective view which shows the arrangement | positioning state of the inclusion removal member of FIG. It is a figure which shows the state which the inclusion removal member moves on the guide rail of the dust remover of FIG.

  The present invention will be described below based on the illustrated embodiments.

  FIG. 1 is a front view showing a dust remover (water intake elevating device) 1 according to an embodiment of the present invention. The dust remover 1 is a rake open / close dust remover, and is disposed on the upstream side of a water intake screen (not shown) of a hydroelectric power plant. The guide rail 4 and the inclusion removal member (inclusion removal member for intake port lifting device) 5 are provided. Here, except for the inclusion removal member 5, the configuration is the same as that of a conventional rake open / close dust remover.

  In other words, the rake 2 is like a rake that lifts driftwood and dust attached to the intake screen, and a large number of rake rods 21 bent in an L shape as shown in FIG. 2 are arranged in the horizontal direction. ing. A connecting bar 22 is attached to the central portion, and a wire rope 23 is connected to the free end of the connecting bar 22. Further, a plurality of arm plates 24 having substantially U-shaped side surfaces as shown in FIG.

  The side rollers 3 are substantially cylindrical and are disposed on both sides of the rake 2. That is, as shown in FIG. 1, an arm post 25 is disposed so as to be sandwiched between two arm plates 24, and the most so as to protrude outward (on the anti-connecting bar 22 side) coaxially with the arm post 25. The side roller 3 is disposed on the outer arm plate 24 side. In this way, the rake 2 and the side roller 3 are integrated.

  The guide rail 4 is U-shaped in cross section and extends in the vertical direction, and the side roller 3 is fitted and mounted in the U-shape. That is, as shown in FIG. 3, it is comprised from the bottom part 4a and the side part 4b which stands | starts up perpendicularly from the both ends edge of this bottom part 4a, and the upper part is opening. The side roller 3 is fitted and mounted in the guide rail 4 from this opening, and the outer peripheral surface of the side roller 3 is in contact with both side portions 4 b of the guide rail 4. Further, in such a mounted state, the disk-shaped flange 31 disposed between the arm post 25 and the side roller 3 is formed on the both side portions 4b of the guide rail 4 as shown in FIGS. It is supposed to be located in.

  As shown in FIG. 5, such a guide rail 4 extends obliquely upward, and further extends obliquely upward at a different angle. That is, it has a bending point 4A where the angle changes.

  And by winding up and lowering the wire rope 23, the side roller 3 is guided by the guide rail 4 while sliding in the guide rail 4, and the rake 2 moves up and down (opens and closes). The dust adhering to the intake screen is lifted up and removed.

  The inclusion removing member 5 is provided for such a conventional structure / configuration. The inclusion removal member 5 is provided on both sides of the rake 2 and protrudes ahead of the side roller 3 in both the ascending direction D1 and the descending direction D2 of the rake 2 (side roller 3). The inclusions including driftwood and dust in the guide rail 3 are removed along with the movement in the traveling directions D1 and D2.

  Specifically, as shown in FIG. 3, an attachment portion 51, a first removal portion 52, and a second removal portion 53 are provided, and these are made of an integral steel plate. The attachment portion 51 is a plate portion attached to the side portion of the rake 2. That is, the rectangular flat plate portion is set to have a width slightly smaller than the width of the bottom portion 4a of the guide rail 4, and an attachment hole 51a is formed in the center portion. A shaft (not shown) for connecting the arm post 25 and the side roller 3 is inserted into the mounting hole 51a and is sandwiched between the arm post 25 and the flange 31 so that the shaft is attached to the side of the rake 2. .

  The 1st removal part 52 is provided in the edge of the ascending direction D1 of the attachment part 51, and the 2nd removal part 53 is provided in the edge of the descending direction D2 of the attachment part 51, and both are equivalent. Because of the configuration, only the first removal unit 52 will be described below. The first removal portion 52 protrudes ahead of the side roller 3 in the traveling direction of the rising direction D1 of the rake 2 (side roller 3), and extends toward the bottom portion 4a of the guide rail 4 to the vicinity of the bottom portion 4a. That is, the mounting portion 51 is positioned on both side portions 4b of the guide rail 4 and is formed to extend obliquely in the ascending direction D1 from the mounting portion 51 toward the bottom portion 4a of the guide rail 4. By extending obliquely in the ascending direction D1 in this way, inclusions in the guide rail 4 are easily removed as the rake 2 (inclusion removal member 5) moves in the traveling direction D1. . That is, the inclusions can be easily scraped off.

  Further, the width of the first removal portion 52 on the base end side (attachment portion 51 side) is the same as that of the attachment portion 51, and the tip end side (bottom portion 4a side) is formed to be narrow. . That is, the first removal portion 52 is formed in a trapezoidal shape, and the width of the tip portion (the shape of the removal portion 52) can smoothly pass through the bending point 4A of the guide rail 4 and be as large as possible. It is set (so that the inclusions in the guide rail 4 can be scraped to every corner).

  Such inclusion removal member 5 is formed and manufactured by cutting or bending a single steel plate.

  Next, the operation of the dust remover 1 having such a configuration will be described.

  First, when the wire rope 23 is wound up, the rake 2 rises as described above, and dust or the like adhering to the water intake screen is lifted and removed by the rake 2. At this time, the inclusion removal member 5 also moves in the ascending direction D1 as the rake 2 rises, and the inclusions in the guide rail 4 are scraped off by the first removal portion 52. Alternatively, inclusions around the guide rail 4 are eliminated (removed). Then, the side roller 3 slides inside the guide rail 4 from which inclusions are removed, and is guided by the guide rail 4.

  Similarly, when the wire rope 23 is wound down, the rake 2 is lowered, and the inclusion removing member 5 is also moved in the descending direction D2, and the inclusions in the guide rail 4 are scratched by the second removing portion 53. Taken. Then, the side roller 3 slides inside the guide rail 4 from which inclusions are removed, and is guided by the guide rail 4.

  As described above, according to the dust remover 1, inclusions in the guide rail 4 are removed by the inclusion removal member 5 (removal portions 52 and 53) as the rake 2 moves up and down. The inclusions are not clogged in the rail 4. For this reason, the side roller 3 is prevented from falling off from the guide rail 4, and the smooth raising and lowering of the rake 2 can be maintained. In addition, since the removal portions 52 and 53 protrude before the side rollers 3 in the traveling directions D1 and D2, the inclusions are removed by the removal portions 52 and 53 before the side roller 3 contacts the inclusions. . Further, when the rake 2 is raised and lowered, the removal portions 52 and 53 are operated and acted respectively, so that the inclusions in the guide rail 4 are more reliably removed. As a result, the movement of the side roller 3 is prevented from being obstructed by the inclusions, and the rake 2 can be raised and lowered more smoothly.

  As a result of the smooth elevation of the rake 2 being maintained, the dust removal by the dust remover 1 is maintained smoothly, and furthermore, it is possible to reduce the overflow power and maintain the hydropower generation smoothly. Moreover, since the smooth raising / lowering of the rake 2 is maintained, the safety of the dust removal work is improved and the failure of the dust remover 1 is reduced.

  In addition, since the inclusion removing member 5 is simply provided on both sides of the dust remover 1, the rake 2 can be smoothly raised and lowered at a low cost. Moreover, the inclusion removal member 5 can be manufactured at a low cost because it has a simple configuration that includes only the attachment portion 51 and the removal portions 52 and 53 by processing a steel plate. Furthermore, only by providing the inclusion removal member 5, it is possible to smoothly raise and lower the existing and existing dust removers.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above-described embodiment, the removal portions 52 and 53 are provided in both the traveling direction of the rising direction D1 and the descending direction D2 of the rake 2, but they may be provided only on one side. For example, only the first removal portion 52 may be provided, and the inclusions in the side rail 4 may be removed only when the rake 2 is raised. Moreover, although the case where the water intake lifting / lowering device is the dust remover 1 has been described, it can be applied to a net or the like. In this case, the inclusion removing member 5 may be provided on both sides of the net (floating body) floating on the sea surface.

1 Dust remover (water intake lifting device)
2 Rake (elevating body)
3 Side roller 4 Guide rail 5 Inclusion removal member (inclusion removal member for intake port lifting device)
51 attachment part 51a attachment hole 52 1st removal part (removal part)
53 2nd removal part (removal part)
D1 Ascending direction (traveling direction)
D2 Descending direction (traveling direction)

Claims (2)

A lifting body disposed on the upstream side of the intake screen of the power plant and provided with side rollers on both sides, and a guide rail that has a U-shaped cross section and extends in the vertical direction to which the side rollers are fitted. , A water intake elevating device in which the elevating body moves up and down while the side roller is guided by the guide rail,
Provided on both sides of the elevating body, projecting ahead of the side rollers in at least one of the ascending direction and descending direction of the elevating body, and as the elevating body moves in the advancing direction An inclusion removal member for removing inclusions including driftwood and dust in the guide rail,
A water intake lifting device characterized by that. A lifting body disposed on the upstream side of the intake screen of the power plant and provided with side rollers on both sides, and a guide rail that has a U-shaped cross section and extends in the vertical direction to which the side rollers are fitted. In the intake lifting / lowering device in which the lifting / lowering body moves up and down while the side roller is guided by the guide rail, the inclusion removal member for the intake lifting / lowering device removes inclusions including driftwood and dust in the guide rail. And
An attachment portion attached to a side portion of the elevating body;
The inclusions in the guide rail are projected in advance in at least one of the ascending direction and descending direction of the lifting body before the side rollers and the lifting body moves in the traveling direction. A removal section to be removed;
An inclusion removal member for a water intake lifting / lowering device.

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