JP2005113418A - Dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector which enables an improvement in a view, a reduction in installation space, energy savings, etc. <P>SOLUTION: In this dust collector, a rake 31 for raking up dust caught by a screen 16 is provided ahead of the screen 16 which is installed in an irrigation canal 14 etc.; an arm 20, which comprises a facing part 20A, facing a front surface of the screen 16, and a curved part 20B, curved backward from an upper end of the facing part 20A, is provided; the curved part 20B of the arm is supported by a rotating shaft 22 in a vertically rotatable manner; a chain 28 with the rake, which is guided by a drive guide rail 30 formed astride the facing part 20A and curved part 20B of the arm 20, is wound around a driving wheel 26 of a driving shaft 24; a motor 35 for rotating the arm is connected to the rotating shaft 22; and a motor 38 for driving the chain is connected to the driving shaft 24. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dust remover that sweeps up dust collected by a screen with a rake.

  2. Description of the Related Art Conventionally, a dust remover has been proposed in which a rake is provided in front of a screen installed in an irrigation channel, a water intake, or the like to sweep up the dust captured by the screen (see, for example, Patent Document 1).

As such a dust remover, as shown in FIG. 9 (b), a beam 4 with a rake is supported on a gantry 1 by a guide cylinder 3 supported by a hinge 2 so as to be movable up and down, and is attached to the guide cylinder 3. The rack of the electric motor 5 with a reduction gear is engaged with the chain rack of the beam 4 and the beam 4 is moved up by the electric motor 5 so that the dust trapped by the screen 7 of the irrigation canal 6 is swept up by the rake 4a. The guide cylinder 3 is swung upward by the electric cylinder 8 connected to the guide cylinder 3 to move the rake 4a away from the screen 7 (see the two-dot chain line), and then the beam 4 is lowered by the electric motor 5. The rake 4a is returned to the lower end position of the screen 7 by moving the guide cylinder 3 downward with the electric cylinder 8 (beam rack rake type).
JP-A-10-112440

  However, in the beam rack rake type dust remover as described above, the beam 4 greatly jumps upward when moving up, so that the ground height T2 becomes high and the scenery becomes worse, and the beam is applied to the obstacle 9 such as a wall or a building. In order to prevent 4 from contacting, installation space S2 needs to be wide.

  Further, since the lifting load for moving up the beam 4 with rake is large, a large-sized electric motor 5 having a large capacity is required, and the power consumption increases. .

  Furthermore, since the rake 4a does not become substantially vertical at the most moving position of the beam 4, it is necessary to provide a wiper 10 for scraping off the dust that has been lifted up by the rake 4a.

  Furthermore, in the electric cylinder 8 for swinging the guide cylinder 3 upward, since the swing angle of the beam 4 is small, the beam 4 is pulled up to the ground at the time of inspection, or the water flow is obstructed at times other than the lifting operation or at the time of flooding. The beam 4 could not be lifted up to a height where it was not.

  Further, since only one rake 4a can be attached to the beam 4, when the amount of dust is too large, the beam 4 cannot be lifted.

  This invention is made | formed in order to eliminate the said problem, and makes it a subject to provide the dust remover which can implement | achieve the improvement of a landscape, reduction of an installation space, energy saving, etc.

In order to solve the above problems, the present invention is a dust remover provided with a rake that sweeps up the dust trapped by the screen in front of a screen installed in an irrigation channel or the like,
An arm having a facing portion facing the front surface of the screen and a bending portion that curves backward from the upper end of the facing portion is provided, and the bending portion of the arm is supported by a rotating shaft so as to be rotatable up and down. The chain with the rake guided by the drive part guide rail formed across the facing part and the curved part of the arm is hung around the drive wheel of the drive shaft, and the arm turning motor is mounted on the turning shaft. The present invention provides a dust remover characterized in that a chain drive motor is connected to the drive shaft.

  According to a second aspect of the present invention, the drive shaft is preferably fitted and supported coaxially in the center hole of the rotation shaft.

  According to a third aspect of the present invention, an apron that curves continuously backward is provided at the upper end of the screen, and the curved portion of the arm is curved so that the rake is in a substantially vertical state at the rear end position of the apron. It is preferable to have a configuration.

  According to a fourth aspect of the present invention, it is preferable that a plurality of the arms are provided and a rake is attached across the chain of each arm.

  According to a fifth aspect of the present invention, the chain is preferably provided with a roller guided by the drive unit guide rail.

  According to a sixth aspect of the present invention, the rake preferably has a configuration in which a plurality of rakes are provided in the drive direction of the chain.

  According to a seventh aspect of the present invention, the rake is preferably provided with a roller that contacts the front surface of the screen.

  Preferably, the rotation shaft and the arm rotation motor, and the drive shaft and the chain drive motor are connected by a chain and a wheel, respectively.

  According to the present invention, by driving the drive wheel together with the drive shaft by the chain drive motor, the chain is moved in the forward direction while being guided by the arm drive section guide rail, and the rake is moved upward in the arm. The dust trapped on the screen of the irrigation channel and the like is lifted up and removed, and then the arm is rotated forward by the arm rotation motor, so that the arm is rotated upward and the rake is removed from the screen. By moving the drive wheel in the reverse direction, the chain is moved in the reverse direction, the rake is moved downward in the arm, and then the arm rotation motor is driven in the reverse direction. The arm is moved down to return the rake to the lower end position of the screen (arm rake type).

  Therefore, since the rake moves up with the chain guided by the drive guide rail of the arm, the conventional beam does not jump greatly upward, so that the ground height is lowered and the landscape is improved, and the wall and Since a conventional beam does not contact an obstacle such as a building, the installation space can be reduced.

  In addition, since the rake is moved up by the chain, the lifting load is reduced, and a small electric motor with a small capacity is required, and the power consumption is reduced to save energy.

  In addition, since the rake can be dropped by its own weight with the rake in a substantially vertical state at the curved part of the arm, there is no need to install a wiper for scraping off the dust that has been scraped up with the conventional rake, and the equipment cost Will be cheaper.

  Furthermore, because the arm rotation motor is used to rotate the arm, the arm rotation angle can be increased, and the arm can be lifted to the ground during inspections, or the water flow can be inhibited during non-raising work or during floods. The arm can be pulled up to a height that does not.

  According to the second aspect, since the drive shaft is coaxially fitted to and supported by the center hole of the rotation shaft, the center hole of the rotation shaft can be used as a bearing of the drive shaft, so that the structure is simplified. .

  According to the third aspect of the present invention, the curved portion of the arm is curved so that the rake is in a substantially vertical state at the rear end position of the apron that curves continuously backward from the upper end of the screen. Can be accurately dropped by its own weight.

  According to the fourth aspect of the present invention, a plurality of arms are provided, and the rake is attached across the chain of each arm. Therefore, even if the rake width is increased in accordance with the screen width, the rake does not tilt. .

  According to the fifth aspect, since the roller is provided in the chain, the chain is smoothly guided by the drive portion guide rail.

  According to the sixth aspect, since a plurality of rakes are provided in the driving direction of the chain, only one rake can be attached with a conventional beam, so that when there is too much dust, it cannot be lifted up. However, the chain can be equipped with multiple rakes, so even if there is a lot of dust, it can have sufficient lifting capacity.

  According to the seventh aspect of the invention, since the rake is provided with the roller that contacts the front surface of the screen, the rake smoothly moves along the front surface of the screen.

  According to the eighth aspect, since the rotation shaft and the arm rotation motor, and the drive shaft and the chain drive motor are connected by the chain and the wheel, respectively, the arm and the chain can be accurately connected without slipping. Drive control can be performed.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  1 is a side view of the dust remover 13A of the first embodiment, FIG. 2 is a plan view, FIG. 3 is a front view, FIG. 4A is an enlarged sectional view taken along line BB in FIG. 1, and FIG. FIG. 5A is an enlarged cross-sectional view taken along line AA of FIG. 1, FIG. 5B is an enlarged view of the main part of FIG. 1, and FIGS. 5C and 5D are schematic diagrams of chains. FIG.

  In the irrigation channel 14 or the like, a vertical bar-shaped screen 16 is installed in an inclined state (for example, inclined by 75 degrees with respect to the bottom) between the bottom and the upper portion of the channel top slab 15 at the top of the channel. A gantry 17 is attached to the upper part of the slab 15.

  The hollow arm 20 having a substantially inverted L shape in a side view (see FIG. 1) includes a linear facing portion 20A facing the front surface of the screen 16 with a predetermined gap t, and an upper end of the facing portion 20A. And a bending portion 20B that curves backward. A plurality of arms 20 (two in this example) are provided in the left-right direction of the screen 16 at a certain interval, and each arm 20 is integrally connected by a connecting rod 21.

  As shown in detail in FIG. 4, a pivot shaft 22 extending in the horizontal direction is attached to the rear end of the curved portion 20 </ b> B of each arm 20, and the pivot projecting outward from both sides of each arm 20. Both end portions 22a of the shaft 22 are rotatably supported by a bearing base 23 provided at the front upper part of the gantry 17. As a result, as shown by the two-dot chain lines a and b in FIG. 1, the arm 20 is supported by the rotating shaft 22 so as to be vertically rotatable together with the bending portion 20B.

  A drive shaft 24 is loosely fitted coaxially into the center hole 22b of the rotation shaft 22, and the drive shaft 24 is rotatably fitted to bearings 25 provided at both ends 22a of the rotation shaft 22. Both ends are supported, and a drive wheel 26 positioned inside the bending portion 20B of each arm 20 is fixed to the drive shaft 24.

  Inside the facing portion 20A and the bending portion 20B of each arm 20, a drive portion guide rail 30 for guiding the both end rollers 29 of the chain 28 is formed across the facing portion 20A and the bending portion 20B.

  As shown in FIGS. 5 (c) and 5 (d), the chain 28 is not an endless shape but a straight shape, and an intermediate portion is wound around the drive wheel 26. The upper end portion 28 a of the chain 28 is guided freely by the drive unit guide rail 30.

  A rake 31 extending in the width direction on the front side of the screen 16 is attached to the lower end portion 28 a of the chain 28 of each arm 20 across the chain 28. The rake 31 is formed with a comb tooth portion 31 a that fits between the vertical bars of the screen 16, and a front roller 32 that comes into contact with the front surface of the screen 16.

  In the upper part of the water channel top end slab 15, an apron 33 is provided in a space between the front part of the mount 17 and curved continuously backward to the upper end of the screen 16. Thus, the bending portions 20B of the arms 20 are curved so that the comb teeth portion 31a of the rake 31 is in a substantially vertical state (see 31a 'in FIG. 1).

  An arm rotating electric motor 35 is installed at the rear upper part of the gantry 17, and a wheel 35 a of a reduction gear output shaft of the electric motor 35 and a wheel fixed to the outer periphery of the rotating shaft 22 between the arms 20. 36 are connected by a chain 37.

  Further, a chain drive electric motor 38 is installed at the rear upper part of the gantry 17, and a reduction gear output shaft wheel 38 a of the electric motor 38 and one end portion (left end portion in FIG. 2) of the drive shaft 24. A fixed wheel 39 is connected by a chain 40.

  Next, the operation of the dust remover 13A configured as described above will be described. 1 to 3, the arm 20 is in the downward movement position, and the rake 31 is in the lower end position of the screen 16 (see FIG. 5C).

  When the drive wheel 26 is driven to rotate forward together with the drive shaft 24 by the chain drive motor 38, the chain 28 is moved in the forward rotation direction (counterclockwise direction in FIG. 1) while being guided by the drive portion guide rail 30 of the arm 20. As a result, the comb teeth 31a of the rake 31 move upward in the upward direction of the arm 20 so that the dust captured by the screen 16 can be lifted (see FIG. 5D).

  The comb tooth portion 31a of the rake 31 is brought into a substantially vertical state by the bending of the bending portion 20B of the arm 20 at the rear end position of the apron 33 continuous with the upper end of the screen 16, and thus is swung up to the rear position of the apron 33. The dust can be dropped and removed accurately by its own weight. In this way, there is no need to provide a wiper for scraping off the dust that has been lifted up by a conventional rake, and the equipment cost is reduced.

  The forward drive of the chain drive motor 38 is stopped at a position where the comb tooth portion 31a of the rake 31 is in a substantially vertical state (see 31a 'in FIG. 1).

  Thereafter, when the rotation shaft 22 is driven to rotate forward by the arm rotation motor 35, the arm 20 is rotated upward to the position indicated by a two-dot chain line a in FIG. 1, and the comb tooth portion 31 a of the rake 31 is detached from the screen 16. It will be kept away.

  Next, when the drive wheel 26 is driven in reverse by the chain drive motor 38, the chain 28 is moved in the reverse direction (the hour hand direction in FIG. 1), and the rake 31 moves downward in the arm 20.

  Thereafter, when the arm rotation motor 35 is driven in reverse, the arm 20 is moved down to the position indicated by the solid line in FIG. 1 and the rake 31 returns to the lower end position of the screen 16.

  By repeating the above steps, the dust trapped on the screen 16 is removed while being scraped one after another.

  The rake 31 is moved downward in the state where the arm 20 is rotated upward when the rake 31 is moved downward in the state where the arm 20 is rotated downward. This is because the dust newly captured by the screen 16 after being lifted will be pushed down.

  In the case of the dust remover 13A, the rake 31 is moved up by the chain 28 guided by the drive unit guide rail 30 of the arm 20, so that the conventional beam does not jump out greatly, so that FIG. ), The ground height T1 (T1 <T2) is lowered to improve the scenery, and the conventional beam does not come into contact with obstacles such as walls and buildings. Therefore, the installation space S1 (S1 <S2) can be reduced.

  Further, since the rake 31 is moved up by the chain 28, the lifting load is reduced, and a small electric motor 38 having a small capacity can be used, so that power consumption is reduced and energy can be saved.

  Furthermore, since the arm turning electric motor 35 is used for turning the arm 20, the turning angle of the arm 20 can be increased (see the two-dot chain line b in FIG. 1), and the arm 20 is pulled up to the ground at the time of inspection. The arm 20 can be lifted up to a height that does not impede the water flow during a time other than the lifting work or during a flood.

  Further, since the drive shaft 24 is coaxially fitted and supported in the center hole 22b of the rotation shaft 22, the center hole 22b of the rotation shaft 22 can be used as a bearing for the drive shaft 24, so that the structure is simple. Become.

  Furthermore, since a plurality of arms 20 are provided and the rake 31 is attached across the chain 28 of each arm 20, the rake 31 does not tilt even if the rake width is increased in accordance with the screen width.

  Further, since the roller 28 is provided on the chain 28, the chain 28 is smoothly guided by the drive unit guide rail 30.

  Further, since the rake 31 is provided with the front roller 32 that contacts the front surface of the screen 16, the rake 31 moves smoothly along the front surface of the screen 16.

  Further, since the rotation shaft 22 and the arm rotation motor 35, and the drive shaft 24 and the chain drive motor 38 are connected to each other by the chains 37 and 40 and the wheels 36 and 39, the arm does not slip. 20 and the chain 28 can be accurately controlled.

  The dust remover 13A of the first embodiment is provided with a single rake 31 on the chain 28. However, like the dust remover 13B of the second embodiment shown in FIGS. A plurality of (three in this example) rakes 31 (A to C) may be provided in the direction.

  According to the second embodiment, in the use state of FIGS. 6 to 8, the arm 20 is in the downward movement position, and the lowermost rake 31 (C) is at the lower end position of the screen 16.

  When the drive wheel 26 is driven to rotate forward together with the drive shaft 24 by the chain drive motor 38, the chain 28 is moved in the forward rotation direction (counter-clockwise direction in FIG. 6) while being guided by the drive portion guide rail 30 of the arm 20. As a result, the comb teeth 31a of each rake 31 (A to C) move up the arm 20 and lift up the dust captured by the screen 16.

  The comb teeth 31a of the rakes 31 (A to C) are in a substantially vertical state due to the bending of the bending portion 20B of the arm 20 at the rear end position of the apron 33 continuous with the upper end of the screen 16. The dust scraped up to the rear position can be accurately dropped and removed by its own weight.

  Among the rakes 31 (A to C), the chain drive motor 38 is connected at the position where the comb teeth 31a of the lowermost rake 31 (C) is substantially vertical (see 31a 'in FIG. 6). Stop the rolling drive. Note that the uppermost rake 31 (A) moves around the drive wheel 26 and above the curved portion 20 </ b> B of the arm 20.

  Thereafter, when the rotation shaft 22 is driven to rotate forward by the arm rotation motor 35, the arm 20 is rotated upward to the position indicated by a two-dot chain line a in FIG. 6, and the comb teeth 31 a of each rake 31 are removed from the screen 16. Can be kept away.

  Subsequently, when the drive wheel 26 is driven in reverse by the chain drive motor 38, the chain 28 is moved in the reverse direction (the hour hand direction in FIG. 6), and the rakes 31 (A to C) move downward in the downward direction of the arm 20. To do.

  Thereafter, when the arm rotation motor 35 is driven in reverse, the arm 20 is moved down to the position indicated by the solid line in FIG. 1, and the lowermost rake 31 (C) returns to the lower end position of the screen 16.

  By repeating the above steps, the dust trapped on the screen 16 is removed while being scraped one after another.

  In the case of the dust remover 13B, in addition to the effect of the dust remover 13A of the first embodiment, a plurality of rakes 31 are provided in the drive direction of the chain 28. Therefore, the conventional beam has only one rake. Since there is a problem that it cannot be lifted up when there is too much dust, the chain 28 has a plurality of rakes 31. Therefore, even if there is a lot of dust, it has sufficient lifting ability. Can be made.

  In the dust remover 13B of the second embodiment, the uppermost rake 31 (A) moves around the drive wheel 26 and moves above the curved portion 20B of the arm 20, and the middle rake 31 (B) Since it protrudes rearward of the drive wheel 26, the rotation shaft 22 and the drive shaft 24 are made longer than the rake width so as not to hinder the movement of these rakes 31 (A, B), The electric motors 35 and 38 are installed near the ends of the rotary shaft 22 and the drive shaft 24 at the rear upper part of the gantry 17, and the arm rotating electric motor 35 is connected to the wheel 35 a of the speed reducer output shaft and the rotating shaft. A chain 36 is connected to a wheel 36 at the end (right end in FIG. 7) of the dynamic shaft 22, and a chain drive motor 38 is connected to a wheel 38a of a reduction gear output shaft and an end of the drive shaft 24 (in FIG. 7). Wheel 3 fixed to the left end) The door are connected by a chain 40.

It is a side view of the dust remover of 1st Embodiment. It is a top view of the dust remover of FIG. It is a front view of the dust remover of FIG. (A) is the BB line expanded sectional view of FIG. 1, (b) is the principal part front view of (a). (A) is the AA expanded sectional view of FIG. 1, (b) is the principal part enlarged view of FIG. 1, (c) (d) is a typical side view of a chain. It is a side view of the dust remover of 2nd Embodiment. It is a top view of the dust remover of FIG. It is a front view of the dust remover of FIG. (A) is a schematic side view of the dust remover of the first embodiment, and (b) is a schematic side view of a conventional dust remover.

Explanation of symbols

13A, 13B Dust remover 14 Water channel, etc. 16 Screen 20 Arm 20A Opposing part 20B Curved part 22 Rotating shaft 22b Center hole 26 Drive wheel 28 Chain 29 Roller 30 Drive part guide rail 31 (A to C) Rake 32 Front roller 33 Apron 35 Electric motor 38 for arm rotation Electric motor for chain drive

Claims (8)

A dust remover provided with a rake that sweeps up the dust trapped by the screen in front of a screen installed in an irrigation channel,
An arm having a facing portion facing the front surface of the screen and a bending portion that curves backward from the upper end of the facing portion is provided, and the bending portion of the arm is supported by a rotating shaft so as to be rotatable up and down. The chain with the rake guided by the drive part guide rail formed across the facing part and the curved part of the arm is hung around the drive wheel of the drive shaft, and the arm turning motor is mounted on the turning shaft. A dust remover characterized in that it is connected and a chain drive motor is connected to the drive shaft.   The dust remover according to claim 1, wherein the drive shaft is coaxially fitted and supported in a center hole of the rotation shaft.   The apron which curves backwards continuously from the upper end of the screen is provided, and the curved portion of the arm is curved so that the rake is in a substantially vertical state at the rear end position of the apron. Dust remover.   The dust remover according to any one of claims 1 to 3, wherein a plurality of the arms are provided, and a rake is attached across the chain of each arm.   The dust remover according to any one of claims 1 to 4, wherein the chain is provided with a roller guided by the drive unit guide rail.   The dust remover according to any one of claims 1 to 5, wherein a plurality of the rakes are provided in a drive direction of the chain.   The dust remover according to any one of claims 1 to 6, wherein the rake is provided with a roller that contacts the front surface of the screen.   The dust remover according to any one of claims 1 to 7, wherein the rotation shaft and the arm rotation motor, and the drive shaft and the chain drive motor are connected by a chain and a wheel, respectively.

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