JP6635539B1 - Dust remover wiper device - Google Patents

Abstract

An object of the present invention is to provide a wiper device in which the operation mechanism of the wiper has excellent durability and the risk of installation and maintenance work and the work load are reduced.
In a wiper device of a dust remover for operating a wiper (4) for scraping off residue from an upper surface (2a) of a rake (2), a wiper (4) has a first arm (4b) extending rearward from a blade (4a) at a front end and a rear end. A second arm 4c extends downward from the section, and includes rollers 4d and 4e at a rear end of the first arm 4b and a lower end of the second arm 4c, respectively, and a guide rail inclined upward from the front side to the rear side. It is assumed that it is swingably connected to a slider 8 that slides along the reference numeral 7. When the chain 3 rotates forward, the rollers 4d and 4e pinch the flange 7a of the guide rail 7 to prevent swinging of the wiper 4, and when rotating in the reverse direction, the pinching is released and swinging of the wiper 4 is allowed.
[Selection diagram] FIG.

Description

  The present invention relates to a wiper device attached to a dust remover for removing residue (solid debris) mixed in a water channel.

  Conventionally, as shown in FIG. 7, there is a case where a dust remover used in a treatment plant such as a water supply system or a sewer system is used (see Patent Document 1 below).

  In this dust remover, a large number of screen bars extending vertically inside the water channel W capture the residue by a screen 51 in which the left and right are arranged side by side, and move a rake 52 having a comb-like tip end along the screen 51 upward. By doing so, the residue is scraped up. The both ends of the rake 52 are connected to endless chains 53 provided on both sides of the screen 51, and the chains 53 rotate by driving of a driving device 55 connected to the upper sprocket 54, so that the chains 53 rotate. Accordingly, the plurality of rakes 52 circulate up and down.

  As a dust remover provided with such a wiper device for scraping off the residue from the upper surface of the rake 52, a dust remover described in Patent Document 2 below is employed.

  In the wiper device of this dust remover, as shown in FIGS. 8 and 9, one end of a lever 57 is rotatably connected to a pin 56 of an attachment provided on a chain 53, and the other end of the lever 57 is provided. Are rotatably connected to both sides of the rake 52 via pins 58. On the bracket portions on both sides of the rake 52, two rollers 59 are rotatably provided with the pin 58 therebetween, and the center of gravity of the rake 52 is located below the pin 58 on the descending side and on the ascending side. It is located above the pin 58. Further, a roller guide 60 that guides the roller 59 along the chain 53 extends.

  At the upper part of the roller guide 60, an inclined guide part 60a in which the distance between the inner wall and the outer wall is widened is provided at the upper part on the rear side of the screen, and a moment about the pin 58 acts on the rake 52 at the inclined guide part 60a. Then, the rake 52 is inverted such that the upper surface of the residue is obliquely directed downward. A wiper 61 is provided at a portion where the rake 52 rises in an inverted state so that the front end thereof faces. With the rise of the rake 52, the wiper 61 swings using a base shaft located above as a hinge. While scraping, the residue is scraped off from the upper surface of the rake 52.

  Further, a wiper device as described in Patent Document 3 below is also known.

  As shown in FIG. 10, the wiper device of this dust remover includes a wiper 63 at links 62a and 62b of a parallel crank mechanism 62. The wiper 63 is pushed up by the rake 52 when the chain 53 rotates forward, and the parallel crank mechanism 62 Is moved obliquely upward by the operation described above, the residue is scraped off from the upper surface of the rake 52 along with the movement, the rake 52 is separated from the rake 52, and then returns to the standby position.

JP 2006-316561 A JP-A-56-31916 Microfilm of Japanese Utility Model Application No. 55-062367 (Japanese Utility Model Application No. 56-163131)

  However, since the wiper device of the dust remover described in Patent Document 2 has a rake reversing mechanism, the rake mounting process is complicated, and the chain is loosened during the work, so that the rake comes off from the attachment. There is a danger of dropping and a work-related accident may occur.

  Further, in the wiper device of the dust remover described in Patent Document 3, since the wiper is supported by the thin link that swings, the strength is relatively low, and the hinge portion of the link is easily worn out. is there.

  Therefore, an object of the present invention is to provide a wiper device in which the operation mechanism of the wiper is excellent in durability and the risk of installation and maintenance work and the work load are reduced.

In order to solve the above-mentioned problems, the present invention provides a screen in which screen bars extending vertically and immersed in water are arranged at predetermined intervals on the left and right, a rake for scraping residue from the water along the screen, In a wiper device of a dust remover attached to a dust remover having an endless chain for circulating the rake, and operating a wiper to scrape off residue from an upper surface of the rake in a process of raising the rake,
The wiper has a first arm extending rearward from a blade at a leading end, a second arm extending downward from a rear end of the first arm, and a wiper having a rear end of the first arm and a lower end of the second arm, respectively. With rollers,
A guide rail is fixed to the main body frame above the water channel in a state of being inclined upward from the front side to the rear side, and the wiper is swingably connected to a slider slidably provided along the guide rail. A lifting spring that urges the tip side of the wiper in a direction of flipping up,
The flange of the guide rail is pinched by rollers at the rear end of the first arm and the lower end of the second arm of the wiper, and the pinched state is maintained by the biasing force of the jumping spring, and the wiper swings. Movement is blocked,
At the time of normal rotation of the chain, the wiper is pushed up by the rake, the slider slides along the guide rail, the wiper moves obliquely upward, and the wiper blade moves on the upper surface of the rake. By the sliding contact, the residue is scraped off the upper surface of the rake, and when the wiper separates from the upper surface of the rake, the wiper returns to the standby position,
When the chain rotates in the reverse direction, the wiper is configured such that the first arm is pushed down by the rake against the urging force of the jump-up spring, so that the rear end of the first arm and the lower end of the second arm. When the pinching of the flange of the guide rail by the roller is released, the tip side swings downward, and the first arm of the wiper separates from the rake, the wiper is biased by the spring to move the wiper to the standby position. It was to return to.

A first arm of the wiper is connected to the main body frame via a damper in which a rod advances and retreats with respect to a cylinder;
The descent speed associated with the return of the wiper to the standby position is reduced by the damper to reduce the impact.

Further, a buffer adjustment spring is interposed on the cylinder side and the rod side of the damper,
The load of the wiper acting on the damper can be adjusted by the buffer adjustment spring.

  In the wiper device of the dust remover according to the present invention, the wiper is pushed up by the rake during normal rotation of the chain, and the wiper moves obliquely upward so as to stroke on the upper surface of the rake as the slider slides along the guide rail. The scraps are scraped off, eliminating the need for a rake reversing mechanism and a wiper parallel crank mechanism, improving durability, making rake installation easier, and reducing the risk and work load of installation and maintenance work. .

  Also, if the rotation of the chain is impeded by large debris between the screen and the rake, the wiper is pushed down by the rake and swings downward by reversing the chain, so the wiper and its movable mechanism Can be prevented from being damaged, and the biting of dust can be easily released.

Overall side view of a dust remover provided with a wiper device according to an embodiment of the present invention Side view showing the same wiper device Main part enlarged perspective view of the same. Side view showing the initial process (4A) and the final process (4B) of scraping the residue off the rake with a wiper when the same chain rotates forward Side view showing the (5A) initial process and the (5B) final process of the retracting operation of the wiper when the chain is reversed. Schematic side view showing the rake mounting operation of the dust remover equipped with the above wiper device FIG. 1 is a perspective view showing the entirety of a dust remover described in Patent Document 1. The schematic side view which shows the operation | movement in which the residue is scraped off from the rake by the wiper in the wiper apparatus of the dust remover of patent document 2. Perspective view showing the mounting part of the rake to the same chain Side view showing a wiper device of a dust remover described in Patent Document 3

  As shown in FIGS. 1 to 3, the dust remover is installed with the upstream side in the flow direction of the water channel W as the front and the downstream side as the rear, and a screen 1 immersed in the water of the water channel W, and a screen 1 along the screen 1. A rake 2 for scraping the residue from water, an endless chain 3 to which both ends of the rake 2 are connected to circulate the rake 2 during rotation, and a rake surface 2a of the rake 2 during the ascending process of the rake 2. A wiper device for operating a wiper 4 for scraping off the residue.

  The screen 1 has a large number of bars extending in the vertical direction arranged at predetermined intervals in the horizontal direction, and is inclined rearward from the lower end to the upper end so that only the upper part is exposed from the water surface at a normal water level. It has become.

  The rake 2 is provided with a triangular rib 2 b on the back side of the upper surface 2 a of the rake 2, and both sides of the rake 2 are attached to the attachment 3 a on the outer surface of the chain 3.

  Then, the rake 2 circulates while maintaining a constant posture on the front side of the screen 1, descends forward at the top at the time of normal rotation of the chain 3, and descends along the front of the screen 1 at the bottom of the water channel W. , And the comb-like tip side engages with the screen 1 and rises. The upper surface 2a of the rake 2 faces upward on the screen 1 side, and faces downward on the opposite side.

  The chain 3 is hung over a sprocket 5 provided on a base 13 of a pond bottom B of a water channel W and a sprocket 6 provided on a main body frame 14 above an upper floor F on the ground, and is guided by a chain guide 12. Then, it is rotated by a driving device connected to the sprocket 6.

  The wiper 4 has a first arm 4b extending rearward from both ends of a blade 4a on the tip side, a second arm 4c extending downward from a rear end of the first arm 4b, and a rear end of the first arm 4b. Rollers 4d and 4e are provided at the lower end of the two arms 4c, respectively.

  A guide rail 7 of a channel material is fixed to the main body frame 14 in a state of being inclined upward from the front side to the rear side, and a slider 8 is slidable along the lower side and upper side flanges 7a and 7b of the guide rail 7. It is provided in. The roller 4d of the wiper 4 is located between the flanges 7a and 7b, and the roller 4e is located below the flange 7a.

  The slider 8 has a front end sandwiched between a rear end of the first arm 4b of the wiper 4 and the roller 4d, is supported by the guide rail 7 by the roller 4d, and has a rear end located between the flanges 7a and 7b. 8b, it is supported by the guide rail 7.

  The sliders 8 on both sides are integrally connected via a connecting rod 8a extending on the axis of the lower front roller 4d, so that the slider 8 and the connecting rod 8a do not rotate relative to each other. The first arm 4b of the wiper 4 is rotatable relative to the connecting rod 8a, whereby the wiper 4 is swingable with respect to the slider 8.

  Then, both ends of a spring 9 which is a torsion coil spring are engaged with the connecting rod 8a and the slider 8, respectively, and the wiper 4 is urged by the spring 9 in a direction in which the tip blade 4a side jumps up. .

  Further, the lower flange 7a of the guide rail 7 is sandwiched by the rollers 4d and 4e of the wiper 4, and the sandwiched state is maintained by the urging force of the jumping spring 9, so that the wiper 4 is prevented from swinging. I have.

  The first arm 4b of the wiper 4 is connected to the main body frame 14 via a damper 10 extending upward. The damper 10 has a cylinder 10a connected to the main body frame 14 via a hinge, and a rod 10b which moves forward and backward with respect to the cylinder 10a is connected to the first arm 4b of the wiper 4 via the hinge.

  A buffer adjustment spring 11 which is a tension coil spring is connected to the cylinder 10a side and the rod 10b side of the damper 10, and by rotating an adjuster 11a which is connected to the lower end of the buffer adjustment spring 11 and is screwed to the rod 10b, The load of the wiper 4 acting on the damper 10 can be adjusted.

  In the dust remover provided with the above-described wiper device, the wiper 4 is pushed up by the rake 2 in the normal state where the chain 3 is rotating forward as shown in FIGS. 4 (4A) and (4B). The slider 8 slides rearward and upward along the guide rail 7, and accordingly, the wiper 4 moves obliquely upward and in parallel, and the blade 4 a comes into sliding contact with the scraping surface 2 a of the rake 2, thereby removing the residue. Is scraped off from the upper surface 2a.

  When the blade 4a of the wiper 4 separates from the upper surface 2a of the rake 2, the wiper 4 returns to the standby position by its own weight. At this time, the descending speed of the wiper 4 is reduced by the damper 10, and the impact is reduced.

  As described above, with the sliding of the slider 8 along the guide rail 7, the wiper 4 moves obliquely upward so as to stroke the scrape upper surface 2 a of the rake 2 and scrapes off the residue. The need for the parallel crank mechanism of the wiper 4 and the wiper 4 is eliminated, and the durability is improved.

  Further, in the case where the rotation of the chain 3 is hindered due to the biting of large debris during the raking process of the rake 2, as shown in FIGS. 5 (5A) and (5B), the rotation of the chain 3 causes the wiper 4 to rotate. The first arm 4b is pushed down by the rib 2b of the rake 2 against the urging force of the jumping spring 9, the pinching of the flange 7a of the guide rail 7 by the rollers 4d and 4e is released, and the tip blade 4a side Swing down.

  When the first arm 4b of the wiper 4 separates from the rib 2b of the rake 2, the wiper 4 returns to the standby position by the urging force of the jumping spring 9.

  In this manner, by rotating the chain 3 while allowing the wiper 4 to escape, damage to the wiper 4 and its movable mechanism can be prevented, and the entangled dust can be easily removed.

  When the rake 2 is to be mounted during the installation and maintenance of the dust remover as described above, the crane 70 is installed on the upper floor F as shown in FIG. For safety, color cones etc. are set up and sectioned so that no one can enter for safety.

  Then, the rake 2 is lifted on the gantry S by the crane 70, and the tension of the chain 3 is temporarily adjusted, and the chain 3 is rotated by electric or manual operation so that the attachment of the chain 3 to which the rake 2 is attached is on the opposite side to the wiper 4. The rake 2 is attached to the attachment of the chain 3 while the chain 3 is stopped by the chain block 71 while the chain 3 is positioned above the mount S.

  Next, the detent of the chain 3 is removed, the chain 3 is rotated electrically or manually, the attachment of the chain 3 is positioned at the same place as described above, and the next rake 2 is attached to the attachment of the chain 3. After such operations are repeated and all the rakes 2 are attached, the tension of the chain 3 is adjusted, and the engagement of the rake 2 and the screen 1 is adjusted.

  In this operation, in the dust remover provided with the above-described wiper device, since there is no reversing mechanism of the rake 2, it is necessary to loosen the chain 3 and push the chain 3 on both sides to the left and right as in the related art. Therefore, the rake 2 can be easily attached to the chain 3, and the rake 2 can be easily removed by the same operation procedure as described above.

  For this reason, it is not necessary to drain the water from the intake pond and perform a large-scale work on the pond bottom B when attaching the rake 2, and it is possible to easily and efficiently perform the work on the stand S. The occurrence of an accident in which the rake 2 falls from a position that is relatively high with respect to the bottom B is prevented, and safety during work is improved.

Reference Signs List 1 screen 2 rake 2a scraping surface 2b rib 3 chain 3a attachment 4 wiper 4a blade 4b first arm 4c second arm 4d, 4e roller 5, 6 sprocket 7 guide rail 7a, 7b flange 8 slider 8a connecting rod 8b roller 9 jumping Spring 10 Damper 10a Cylinder 10b Rod 11 Buffer adjustment spring 11a Adjuster 12 Chain guide 13 Base 14 Body frame 70 Crane 71 Chain block B Pond bottom F Upper floor S Mount W Waterway

Claims (3)

A screen (1) in which screen bars extending vertically and immersed in water are arranged at predetermined intervals on the left and right, a rake (2) for scraping the residue from the water along the screen (1), and the rake ( A wiper is attached to a dust remover provided with an endless chain (3) for circulating 2), and in order to scrape off residue from the upper surface (2a) of the rake (2) during the ascent of the rake (2). In the wiper device of the dust remover that operates (4),
The wiper (4) has a first arm (4b) extending rearward from a tip blade (4a), a second arm (4c) extending downward from a rear end of the first arm (4b), Rollers (4d, 4e) are provided at the rear end of the arm (4b) and the lower end of the second arm (4c), respectively.
A guide rail (7) is fixed to the main body frame (14) above the water channel in a state of being inclined upward from the front side to the rear side, and a slider (8) slidably provided along the guide rail (7). The wiper (4) is swingably connected to the wiper (4) is provided with a jumping spring (9) that biases the tip side of the wiper (4) in a direction of jumping up,
The flange (7a) of the guide rail (7) is sandwiched by rollers (4d, 4e) at the rear end of the first arm (4b) of the wiper (4) and the lower end of the second arm (4c). The pinched state is maintained by the urging force of the jumping spring (9), and the swing of the wiper (4) is prevented,
When the chain (3) rotates forward, the wiper (4) is pushed up by the rake (2), the slider (8) slides along the guide rail (7), and the wiper (4) is tilted. Translated upward, the blade (4a) of the wiper (4) slides on the scraping surface (2a) of the rake (2), so that the residue is removed from the scraping surface (2a) of the rake (2). When scraped off and the blade (4a) of the wiper (4) detaches from the upper surface (2a) of the rake (2), the wiper (4) returns to the standby position,
When the chain (3) rotates in the reverse direction, the wiper (4) causes the first arm (4b) to be pushed down by the rake (2) against the urging force of the jumping spring (9). The pinch of the flange (7a) of the guide rail (7) by the rollers (4d, 4e) at the rear end of the first arm (4b) and the lower end of the second arm (4c) is released, and the tip end is downward. When the first arm (4b) of the wiper (4) separates from the rake (2), the wiper (4) returns to the standby position by the urging force of the jumping spring (9). A wiper device for a dust remover. A first arm (4b) of the wiper (4) is connected to the main body frame (14) via a damper (10) in which a rod (10b) advances and retreats with respect to a cylinder (10a);
2. The wiper device according to claim 1, wherein the damper (10) slows down the descent speed associated with the return of the wiper (4) to the standby position, thereby reducing impact. 3.   A buffer adjustment spring (11) is interposed on the cylinder (10a) side and the rod (10b) side of the damper (10), and the wiper (4) acting on the damper (10) by the buffer adjustment spring (11). 3. The wiper device for a dust remover according to claim 2, wherein the load of the wiper is adjustable.

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