JP2005061166A - Dusting device in filter device for scavenger's cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To vibrate the whole of each filter more effectively in a filter device for a scavenger's cart having a form that two filters are juxtaposed to a parting board. <P>SOLUTION: When vibrations are generated in a vibrating bracket 30 by a filter shaker 40, the bracket 30 is oscillated vertically to a filter fixing frame 20 centering around a connecting section by a vibration-proof rubber 35, and a filter-fixing frame percussion section 34 percusses a connecting frame 20c in a section near to the center of the parting board 6. Since the periphery of the parting board 6 is connected to a hopper wall and the parting board 6 is brought to the state in which a central section is easy to most deflect, the whole parting frame 6 is vibrated in a large amplitude together with the filter 10 when the filter fixing frame 20 is percussed in the section near to the center of the parting board 6, dust adhering on the underside of a filter element 10b is shaken off effectively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a filter device built in a hopper of a cleaning vehicle, and more particularly to a dust removal device that shakes off dust adhering to a filter.

  In Patent Document 1, the inside of a hopper is divided into a dust collection chamber and a filter chamber by a filter mounting plate (partition plate), and the partition plate has a pair of right and left square holes (air communication holes) communicating the dust collection chamber and the filter chamber. In addition, a pair of panel-type filters that assemble a filter fixing frame on the filter chamber side of the partition plate and cover the air communication hole between the filter fixing frame and the partition plate are arranged in parallel. A filter device for a cleaning vehicle is described in which a filter shaker is attached via a vibration isolation member, and a vibration member provided on the filter shaker is brought into contact with a substantially central portion of the filter.

  Japanese Patent Application Laid-Open No. H10-228688 also discloses a structure in which a vibration generator is supported on a support body separated from a filter, and the vibration generator is vibrated by the vibration generator to strike the frame portion on the outer periphery of the filter.

  Japanese Patent Application Laid-Open No. H10-228667 discloses a filter cover that has a shaker motor attached to the center of the filter cover and a vibration transmission member that propagates the vibration to the center of the filter. Patent Document 4 discloses that a filter is slidably supported on an attachment portion, a vibration generator is provided on the filter surface, and the entire filter is slid by the vibration energy and struck against the attachment portion.

In the technique of Patent Document 1, since the filter surface is vibrated locally by a direct vibration member, there is a problem that vibration is difficult to propagate to the entire filter. Further, since a part of the filter surface is repeatedly vibrated, there is a problem that the part is likely to be deformed and damaged. When the part is deformed, it is necessary to adjust the contact state. In the technique of Patent Document 2, since the vibration generator is supported inside the filter chamber away from the filter, it is difficult to perform the replacement work because the vibration generator becomes an obstacle when the filter is replaced. In Patent Document 3, the central part of the filter case is vibrated, but when two filters are arranged side by side, it is unclear which part of the filter case is struck and vibrated in the juxtaposed direction. Patent Document 4 has a drawback that the filter support structure becomes large and complicated.
JP 2002-95615 A JP-A-11-57366 Japanese Patent No. 2850409 JP-A-5-154320

  In the filter device of the type in which two filters are arranged side by side on the partition plate, the present invention pays attention to the fact that the central portion of the filter device is in a support state that is most easily bent in the vertical direction when viewed as the entire partition plate. The entire striking effect can be vibrated more effectively due to the striking effect used, without damaging a part of the filter, without needing to adjust the position of the excitation unit relative to the filter, and when the filter is replaced, the vibration member becomes an obstacle. It is intended to provide a dust removal device that is not required to be.

The present invention divides the inside of the hopper into a dust collection chamber and a filter chamber by a partition plate, and the partition plate is formed with an air communication hole for communicating the dust collection chamber and the filter chamber, and on the filter chamber side of the partition plate. A filter fixing frame is assembled, a pair of panel-type filters that cover the air communication holes are sandwiched in parallel between the filter fixing frame and the partition plate, and a vibration device is attached to the filter fixing frame via a vibration isolating member. In a vehicle filter device, a vibration bracket is swingably connected to each filter fixing frame sandwiching each panel type filter via a vibration isolation member, and a vibration device is attached to each vibration bracket, and a partition plate A filter fixing frame striking portion for striking the corresponding filter fixing frame near the center of the filter is provided so that the filter fixing frame striking portion contacts the filter fixing frame by gravity. Characterized in that it was.
The filter fixing frame is composed of a holding frame that holds down both edges in the juxtaposed direction of the panel filters arranged side by side and a connecting frame that connects the holding frames, and connects the connecting portion of the vibration bracket to the connecting frame, The filter fixing frame striking portion of the vibration bracket is provided so as to strike the connecting frame from the vertical direction, and the vibration bracket is caused by the repulsive force generated at the contact portion between the filter fixing frame striking portion and the filter fixing frame due to vibration by the vibration device. Was configured to swing. The filter fixing frame striking part is located below the attachment part of the vibration device provided closer to the center of the partition plate from the connecting part.

In the device of the present application, in a filter device of a type in which two filters are arranged side by side on the partition plate, when viewed as the entire partition plate, the center portion thereof is the closest to the center portion of the partition plate in a support state that is most easily bent in the vertical direction. Since the filter fixing frame integrated with the partition plate is struck using the gravitational action, the vertical vibration of the filter frame and the partition plate of the panel type filter can be increased, thereby effectively reducing the entire filter element of the filter. It can be vibrated and the dust adhering to the filter element of the filter can be dropped efficiently. Further, since the upper surface of the filter element is not directly struck, the filter is not damaged and the filter is not deformed. Further, since the fixed frame is hit, the contact state between the striking member and the filter fixed frame does not change, and adjustment thereof is not necessary.
In addition, since the vibration device is attached to the filter fixing frame, it is only necessary to remove the filter fixing frame when replacing the filter, and the filter can be easily replaced.

  As is well known, the hopper 1 of the road surface or floor surface cleaning vehicle A is provided on the vehicle body. The hopper 1 includes a dust inlet 2 for taking in dust on the road surface F (floor surface) swept up by the dust sweeping means B (sweeping brush) provided on the vehicle body side of the road surface cleaning vehicle A, and at the time of hopper dumping. A dust discharge door 3 for discharging dust and an air suction port 4 connected to an air suction side of a suction blower (not shown) on the vehicle body are provided. Inside the hopper 1 is a partition plate 6 that constitutes a part of the filter device 5, and a lower dust collection chamber 7 in which the dust intake 2 is opened and an upper filter chamber 8 in which the air suction port 4 is opened. Divided into two chambers.

The partition plate 6 shown in FIG. 5 is formed in the shape of a long rectangular frame that is large enough to attach the two filters 10 and 10 and has a long side in the width direction of the vehicle. Air communication holes 11, 11 each having a quadrangular hole substantially the same size as 10 are provided. The front frame portion 6a of the partition plate 6 is fixed to the front wall 1a of the hopper 1, the rear frame portion 6b bent obliquely upward is fixed to the rear wall 1b of the hopper 1, and the left frame portion 6c and the right frame portion 6d are Each is fixed integrally to left and right walls (both side walls in the vehicle width direction) 1c, 1d of the hopper 1. Since the partition plate 6 is fixed to the corresponding hopper walls 1a-1d, the center of the partition plate 6 farthest from each wall 1a-1d is the other in the direction perpendicular to the partition plate 6. It is in a state where it is easier to bend than the part of the partition plate 6. Two bolts 12 are implanted in the left frame portion 6c and the right frame portion 6d of the partition plate 6, respectively, and four bolts 12 are implanted in the middle frame portion 6e.
The panel filter 10 is configured by attaching a bellows-shaped filter element 10b inside a rectangular filter frame 10a. The filter 10 is applied to the upper surface of the partition plate 6 on the left and right sides of the partition plate 6 through the gasket 13 in correspondence with the air communication holes 11, and is separated from the partition plate 6 by the filter fixing frame 20 applied from the filter chamber 8 side. And is fixed with the side to which dust adheres facing down.
The filter fixing frame 20 has the same configuration as that disclosed in Japanese Patent Application Laid-Open No. 2002-95615, and a pair of holding frames 20a having an L-shaped cross section for holding the left and right frame portions (both edges in the filter juxtaposition direction) of the filter frame 10a. , 20b and a pair of connecting frames 20c made of square pipes connecting the presser frames 20a, 20b. In each filter fixing frame 20, the left and right presser frames 20 a and 20 b are formed to be short and long. When the left and right filter fixing frames 20 are attached to the partition plate 6, the long presser frame 20 a of the right filter fixing frame 20 is used. The short presser frame 20b of the left filter fixing frame 20 can be inserted into the recess. Each filter fixing frame 20 is fixed to the partition plate 6 integrally with the bolts 12 of the partition plate 6 inserted into the bolt holes of the left and right presser frames 20 a and 20 b and tightened with a wing nut 21.

In the left and right filter fixing frames 20, right-angle attachment pieces 25 are fixed to the center portions of the pair of connection frames 20 c. The vibration bracket 30 is provided at a position that reaches between the pair of connecting frames 20c and is perpendicular to the filter fixing frame 20, and is displaced from the connecting portion 31 toward the center frame 6e of the partition frame 6. The attachment part 32 and the connection part 33 which has connected these connection parts 31 and the attachment part 32 are provided, and it is comprised by bending the steel plate. The attachment portion 32 has a length straddling between the pair of connection frames 20 c and 20 c and is perpendicular to the filter fixing frame 20. The connecting portion 33 has the same length as the attachment portion 32, and a striking plate portion 33a formed on a filter fixing frame striking portion 34 whose bottom surface facing the coupling frame 20c strikes the top surface of the coupling frame 20c, and the striking plate It is comprised from the two connection board parts 33b which connect the part 33a and the said connection part 31. FIG. Both end portions of the connecting portion 31 are connected to corresponding mounting pieces 25 via vibration-proof members (vibration-proof rubber) 35, respectively.
In the left and right vibration brackets 30, filter shakers 40 (vibration devices) are attached to the attachment portions 32 so as to face each other. The filter shaker 40 rotates the eccentric weight 41 with a motor to vibrate the vibration bracket 30 in the vertical direction. A weight 45 is fixed to the upper surface of the hitting plate portion 33a, and the hitting portion 34 is in contact with the upper surface of the connecting frame 20c by the weight of the weight 45, the filter shaker 40, and the vibration bracket 30 itself.

  In the filter device having the above configuration, when the filter shaker 40 is activated, the vibration bracket 30 vibrates in the vertical direction by the rotation of the eccentric weight 41. Due to this vibration, the vibration bracket 30 is fixed to the filter centering on the connection portion by the vibration isolating rubber 35 by the action of the repulsive force and gravity generated at the contact portion where the hitting portion 34 of the vibration bracket 30 is in contact with the connection frame 20c. The filter fixing frame striking portion 34 on the lower surface of the striking plate portion 33 a repeatedly strikes the connecting frame 20 c of the filter fixing frame 20 at a portion near the center of the partition plate 6. As described above, the partition plate 6 itself is connected to the hopper walls 1a to 1d at the four circumferences, and the partition plate 6 is supported in a state where the center portion is most easily bent. When the filter fixing frame 20 is struck on both sides in the vehicle width direction of the portion near the center of 6, the entire filter frame 10 a and the partition frame 6 are vibrated with a large amplitude, and the entire filtration element 10 b is shaken, The dust attached to the lower surface of the filtration element 10b is effectively shaken off by the vibration.

  In addition, when the filter 10 is replaced, the filter shaker 40 and the vibration bracket 30 can be removed together with the filter fixing frame 20 by removing the filter fixing frame 20 from the partition plate 6. Therefore, when removing the filter 10, the filter shaker 40, etc. Does not get in the way.

  The present invention can be applied to other cleaning devices of a type in which a pair of panel type filters are arranged side by side in addition to a filter device of a cleaning vehicle.

It is a hopper part fracture side view of a cleaning car provided with this-application dust drop device. FIG. 2 is a II view of FIG. 1. It is the III-III sectional view taken on the line of FIG. It is the X section enlarged view of FIG. It is a perspective view which shows a partition plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hopper 6 Partition plate 7 Dust collection chamber 8 Filter chamber 10 Panel type filter 11 Air communication hole 20 Filter fixed frame 20a, 20b Holding frame 20c Connection frame 25 Mounting piece 30 Vibration bracket 31 Connection part 32 Attachment part 34 Filter fixed frame impact part 35 Vibration isolation member 40 Filter shaker (vibration device)

Claims (3)

The inside of the hopper is partitioned by a partition plate into a dust collection chamber and a filter chamber. The partition plate has an air communication hole that communicates the dust collection chamber and the filter chamber, and a filter fixing frame is provided on the filter chamber side of the partition plate. A filter device for a cleaning vehicle in which a pair of panel-type filters that cover the air communication hole is sandwiched in parallel between the filter fixing frame and the partition plate, and a vibration device is attached to the filter fixing frame via a vibration isolating member. The vibration brackets are swingably connected to the filter fixing frames sandwiching the panel-type filters via vibration-proofing members, and vibration devices are attached to the vibration brackets, and are located near the center of the partition plate. A filter fixing frame striking portion for striking the corresponding filter fixing frame is provided, and the filter fixing frame striking portion is configured to come into contact with the filter fixing frame by gravity. Dust removal device in the filter device of the sweeper characterized. The filter fixing frame is composed of a holding frame that holds down both edges in the juxtaposed direction of the panel filters arranged side by side and a connecting frame that connects the holding frames, and connects the connecting portion of the vibration bracket to the connecting frame, The filter fixing frame striking portion of the vibration bracket is provided so as to strike the connecting frame from the vertical direction, and the vibration bracket is caused by the repulsive force generated at the contact portion between the filter fixing frame striking portion and the filter fixing frame due to vibration by the vibration device. The dust drop device in the filter device of the cleaning vehicle according to claim 1, wherein the dust drop device is configured to swing. The dust drop device in the filter device of the cleaning vehicle according to claim 1, wherein the filter fixing frame striking portion is located below the attachment portion of the vibration device provided near the center of the partition plate from the connecting portion.

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