JPH0218115Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a dust remover in which a main chain equipped with a rake is guided by a guide rail instead of a sprocket wheel, which prevents the main chain from shifting laterally and guides it reliably. The present invention relates to a main body chain guiding device configured as described above.

In the past, many studies have been made on dust removers that eliminate underwater sprocket wheels and have a main chain guided by guide rails from the viewpoint of reducing the number of moving parts underwater and improving maintainability. For example, Japanese Utility Model Application Publication No. 59-92720 discloses a structure in which the chain foil of the main chain is sandwiched between an upper guide rail and a lower guide rail from above and below, respectively, to serve as a sprocket wheel.

However, in this structure, in order to prevent the main chain from falling off the guide rail due to lateral displacement, the chain link width is made larger than the diameter of the chain foil that contacts the guide rail, so that the side guide interferes with the rail. .

Here, the chain link width refers to the width in the direction perpendicular to the direction in which adjacent chain foils are connected.

Therefore, the life of the main body chain, particularly the chain links and guide rails, may be shortened due to wear. Another disadvantage is that the driving force of the main chain must be increased to resist the frictional force.

The present invention has been made in view of this, and the diameter of the chain foil of the main body chain is configured to be larger than the width of the chain link to prevent contact wear between the chain link and the guide rail. A flange is provided on one side of the chain, and this flange is sandwiched between a guide rail and a guide flange to prevent the chain from shifting laterally.

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

Figure 1 shows an embodiment of a dust remover in which the sprocket wheel in the underwater part is eliminated and the main chain equipped with a rake is guided by a guide rail. This is a chain guide that guides a main body chain 3 equipped with a rake 4 in order to scrape up and discharge the residue caught on the screen along the screen.

In the illustrated embodiment, chain guides are provided on both the ascending and descending sides of the main body chain, but an embodiment in which the chain guides are provided on the upstream side of the screen above the bottom of the screen may also be used.

A detailed cross section of the chain guide 2 is shown in FIG. A chain guide is provided along the trajectory of the rake or along a part of the screen extending from the top to the bottom, but this is because the frame F is disposed along the trajectory of the rake on the inside of the waterway and toward the outside of the screen. Support frames 5, 5 are provided protruding from this frame F so as to sandwich the main body chain and face each other. In this case, the support frame 5 may extend over the entire length of the frame or may be provided protrudingly at regular intervals. A guide rail 6 is protruded from a predetermined position on the inner surface of one of the support frames 5, for example, the lower side in the illustration, and the guide rails 6 are brought into contact with the foil surface 31 of the main body chain. A guide flange 7 is provided protruding from the outer edge of the guide rail 6.
A groove is formed between the main body chain 3 and the side surface thereof, and a flange 32 provided on only one side of the main body chain foil 31 is fitted into the groove 8, thereby guiding the main body chain 3 so that it does not come off from the chain guide 2. It is something. Therefore, the guide rail does not come into contact with the chain link at all and does not wear out, so the life of the main chain can be extended. In addition, the flanged foil of the main body chain is always arranged so that the flange is on one side, and on the right side of the chain in the illustration. The chain link consists of an inner ring plate 33 and an outer link plate 34 as shown.

According to the present invention, only the chain foil contacts the guide rail, and the guide rail and guide flange guide the flange of the chain foil, so that the chain link is not damaged at all. Furthermore, since the main chain can be guided and held by a guide rail provided on either the upper or lower guide flange, compared to the conventional technology in which the chain is held between the upper and lower guide rails, it is possible to reverse the chain wheel. , without adding overload to the main chain due to stopping the rolling of the chain wheel or prying it.
This has the advantage that the life of the main chain can be extended.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the dust remover, FIG. 2 is a sectional view of the chain guide, and FIG. 3 is a front view thereof. 1... Screen, 2... Chain guide, 3...
...Body chain, 4...Rake, 5...Support frame, 6
...Guide rail, 7...Guide flange, 31
... foil, 32 ... flange, 33 ... inner link plate, 34 ... outer link plate.

Claims (1)

[Scope of utility model registration request] In a dust remover configured such that an underwater sprocket wheel is eliminated and a main body chain equipped with a rake is guided and supported by a chain guide, the chain wheel of the main body chain is a foil with a flange on one side, and the diameter of the chain wheel is determined by the chain link. one guide rail that abuts and supports the chain foil; and a guide rail that is arranged parallel to the guide rail, and the chain foil is disposed on one side of the chain guide. A guide device for a main chain in a dust remover, comprising a guide flange for guiding a flange of the dust remover.