JP3845800B2 - Reciprocating dust remover - Google Patents

Description

  The present invention relates to a reciprocating dust remover suitable for small rivers.

  As disclosed in Japanese Patent Application Laid-Open No. 2002-317428, a dust removal facility generally used for small rivers is provided with a flat screen obliquely in a water channel, and a comb-like rake that moves on the upper surface side. Is moved up and down by a driving device via a wire rope or a chain.

  The one disclosed in Japanese Patent Laid-Open No. 2002-317428 is a simplified rake lifting mechanism, but the dust removal equipment using this type of flat screen has a higher installation position of the hoisting device. When it is used for small rivers, the facilities that protrude above the ground become obstructive, so it is desired that the ground facilities be as low as possible. In addition, there has been a demand for a rake that requires a small driving force.

  FIG. 1 and FIG. 2 are a plan view and a longitudinal sectional view of a reciprocating dust remover for a small river that the present inventors have devised in order to solve the above-mentioned problem. 1, the end of the wire rope 5 for raising and lowering is connected to the mounting portion 4a on one side of the arms 4 and 4 on the outer side of the screen 1 as shown in FIG. However, as shown in FIG. 2, since the angle formed by the wire rope 5 and the arm 4 when the rake 2 is at the lowest position is as small as 36 °, the winding for winding the rake 2 from the lowest position from the expressions (1) and (2). The upper load becomes 5KN or higher, and therefore a hoisting machine capable of hoisting 5KN or higher is required, and the hoisting machine is installed so that the wire rope 5 is not caught and damaged at the corner of the transfer base 13 of the hoisting machine 6. The location was also limited.

JP 2002-317428 A (page 3, FIG. 1)

Accordingly, the present invention is intended to provide a reciprocating dust remover that has low ground facilities suitable for small rivers such as urban areas, requires only a small driving force, and is free to install a hoisting machine. is there.

  The present invention has been made in order to solve the above-mentioned problems. A wire rope that moves the rake attached to the swing arm along the upper surface of the screen and lifts the rake as the screen has an arc shape is provided on the upper surface of the screen. It is stretched so that

  Specifically, the screen is curved in a circular arc shape, a comb-shaped rake is disposed on the projecting side, the rake is swingably attached to swing arms provided on both sides of the screen, and the drive device Is configured to move along the upper surface of the screen, and includes means for bringing the rake into a rake-up operation state when the rake is raised and a non-rake-down operation state when the rake is lowered, and driving the rake up and down The attachment position of the rake wire rope and the attachment position of the driving device are devised so that the wire rope connected to the device is stretched over the upper surface of the screen.

  According to the present invention, since the portion protruding on the water channel is lower, it is not obstructive than the conventional device, and the wire pulling angle with respect to the rake is increased, so that the method shown in FIGS. Since the winding force can be reduced and the hoisting machine can be small or manual, it is suitable for small rivers in urban areas, and the installation position of the drive unit can be mounted relatively freely. There is an advantage that the degree of freedom of design increases.

  3 and 4 show an embodiment of the present invention. FIG. 3 is a plan view and FIG. 4 is a longitudinal side view.

  3 and 4, reference numeral 1 denotes a screen that is curved in an arc shape, and is provided in the water channel W with its protruding side facing the upstream side.

  Reference numeral 2 denotes a rake that is swingably attached to swing arms 4 and 4 that are swingably attached to the side walls 3 and 3 of the water channel W. One end of the rake is connected to the attachment portion 4c and is moved to the upper surface of the screen 1. Is moved up and down along the upper surface of the screen 1 by a manual winch 6 via a wire rope 5 stretched so as to be able to be stretched (in the embodiment, hung on the horizontal rail 1a of the screen 1). Is configured not to rotate downward by stoppers 7, 7 provided on the swing arms 4, 4. The swinging arms 4 and 4 are formed in a torii-like shape by connecting members 4b, and the posture changing projections or trochanters 9 of the rake 2 are respectively provided outside the arms 8 and 8 provided on both sides of the rake 2. Is provided.

  Reference numerals 10 and 10 denote arcuate guide rails for maintaining a descending posture using channel members attached to the side walls 3 and 3 of the water channel W, and are provided concentrically with the screen 1 on the upstream side of the screen 1. . The upper part of each of the guide rails 10, 10 is provided with a course switching piece 11 like a check valve, and the lower part is provided with a lowering posture switching guide part 12.

The guide rails 10 and 10 guide the posture change projections or the trochanters 9 provided on both sides of the rake 2 when the rake 2 is lowered, and the rake 2 is moved in the opposite direction against the lifting force of the manual winch 6 when lowered. The posture of the rake 2 is maintained in the non-raising operation state by rotating.

When the rake 2 is lowered, the posture switching projection or the trochanter 9 provided on the rake 2 is disengaged from the guide rails 10 and 10, and the rake 2 is rotated by the lowering posture switching guide portion 12 as shown in FIG. Raised operation state.

  Accordingly, the rake 2 drives the manual winch 6 to scrape the dust caught on the screen 1, and when reaching the uppermost position, the rake 2 becomes almost vertical downward, so that the pedestal installed in the water channel W You can drop trash on the 13th.

  According to this embodiment, the wire rope 5 is provided over the arc-shaped outer surface of the screen 1, that is, the plurality of horizontal rails 1a, and the attachment portion 4c of the wire rope 5 of the rake 2 is installed near the screen. Therefore, when the rake 2 is at the lowest position, as shown in FIG. 4, the angle formed by the wire rope 5 and the arm 4 is 72 °. Therefore, the numerical value of this embodiment is substituted into the equation (2). According to the formula (3), the hoisting load is 5KN or less, and a hoisting machine with a small driving force can be used. Since the wire rope 5 is laid on the plurality of horizontal rails 1a of the screen 1, the wire rope 5 is distributed, and the top horizontal rail is on the river, so that the risk of damage to the wire rope due to the corner of the crossing base 13 is avoided as shown in FIGS. Wide flexibility in installation position That.

  5 to 7 are a plan view, a longitudinal side view, and a front view showing the second embodiment. 4d is a bar attached to both ends of the arms 4 and 4, and a wire rope 5 is attached to the center of the bar. It has been. The bar 4d is installed so as not to hinder the rotation of the rake 2, and the wire rope 5 is stretched over the arc-shaped outer surface of the screen 1, that is, a plurality of horizontal rails 1a as in the first embodiment. In addition, as shown in FIG. 6, the angle formed by the wire rope 5 and the arm 4 is 70 °, so that the hoisting load can be hoisted at 5 KN or less from the equations (1) and (4).

  In this reciprocating dust remover, since the screen 1 has an arc shape, the portion protruding on the water channel is lower and the frictional resistance at the time of scraping is smaller than that of a conventional device having a flat screen, so that the driving force is low. Since the wire rope 5 is stretched along the arc-shaped outer surface of the screen 1, the angle formed by the wire rope 5 and the arm 4 is large, so that the winding load during winding is small.

  Since the rake 2 is attached to the swing arms 4 and 4 configured in a frame shape, the rake 2 is less likely to swing and is therefore suitable for a screen having a fine mesh width.

The top view which shows the conventional Example. The longitudinal side view which shows the conventional Example. The top view of the 1st Example of this invention. 1 is a longitudinal side view of a first embodiment of the present invention. The top view of the 2nd Example of this invention. The vertical side view of the 2nd Example of this invention. The front view of the 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screen 2 Rake 3 Side wall 4 Oscillating arm 5 Wire rope 6 Manual winch 7 Stopper 8 Arm 9 Attitude change projection or trochanter 10 Guide rail 11 Course change piece 12 Attitude change guide 13 Transfer stand

Claims (1)

The screen is arcuate, and the overhanging side is arranged in the water channel W with the overhanging side upstream, and the comb-shaped rake is arranged on the overhanging side, and this rake is swung to the swing arms provided on both sides of the screen. Mounted movably, the rake is configured to move up and down by a driving device via a wire rope, and a wire rope for lifting the rake is provided over the upper surface of the arc-shaped screen, and when the rake is raised Is a reciprocating dust remover comprising means for bringing the rake into a scraping operation state and bringing the rake into a non-scraping operation state when the rake is lowered.

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