JPH10156351A - Traveling scum scraper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize traveling and to prevent derailing by providing a driving wheel and a track-guide sprocket to be meshed with a rack chain to a supporting truck traveling on the rail laid on the side edge of both sides of a tank to be treated. SOLUTION: A two-wheel truck 21 as the supporting truck is freely rotatably supported on a rail 17 laid on the side edge 15 of a settling basin, and the left and right two-wheel trucks 21 are connected through a connecting rod 23 to constitute a traveling truck. A propulsion unit for rotating the driving wheel 26 by a traveling motor to travel a traveling scum scraper is furnished to the traveling truck. The axle 54 of the two-wheel truck 21 is rotatably supported on the U-sectioned beams 52 and 53 of the truck frame 51 extending in the traveling direction of the truck by the bearings 55 and 56, and a track- guide sprocket 57, the driving wheel 26 and a transmission sprocket 59 are fixed to the axle 54. The track-guide sprocket 57 is meshed with the rack chain 66 laid on the side edge 15, in parallel with the rail 17 to stabilize traveling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling scum scraper.

[0002]

2. Description of the Related Art Conventionally, in the process of treating wastewater such as sewage,
Scum such as floating scum (first settling) of suspended matter contained in the sewage and floating scum (final settling) based on the processing medium is generated, and the scum is sewage in a treatment tank such as a settling (den) pond. Surface. Therefore, there is provided a traveling scum scraper which forcibly scrapes scum floating on the liquid surface of the sewage in the tank to be treated (Japanese Utility Model Publication No. 6-41675).
Reference).

[0003] Rails are laid on both side edges of the tank to be treated, a two-wheeled vehicle is provided on one rail, and a one-wheeled vehicle is provided on the other rail, respectively. The traveling trolley is configured by being connected to the one-wheeled trolley by a connecting rod. Also,
The traveling vehicle has a propulsion device that causes a traveling scum scraper to travel along the rails by rotating drive wheels disposed on the two-wheeled truck, and a scum scraping flight for raising and lowering the flight. A flight elevating device is provided.

[0004]

However, in the conventional traveling scum scraping machine, the wind pressure resistance generated when the traveling scum scraping machine hits the wind, and the wind pressure resistance generated when the scum is scraped. When the scum scraping resistance or the like is large, the driving wheels slip, and the traveling scum scraping machine meanders or vibrates, so that traveling becomes unstable.

In addition, a two-wheeled vehicle is provided on one rail and a one-wheeled vehicle is provided on the other rail, and the traveling scum scraper is supported by three points. Cheap. An object of the present invention is to solve the problems of the conventional traveling scum scraper and to provide a traveling scum scraper that can stabilize traveling and does not cause derailing. I do.

[0006]

For this purpose, in the traveling scum scraper according to the present invention, rails laid on both side edges of the tank to be treated and movably supported on the respective rails. A supporting rod, a connecting rod for connecting the supporting vehicles, a scum scraping flight supported below the connecting rod, and scraping scum floating on the liquid surface of the sewage in the tank to be treated; A rack chain laid on at least one side edge of the processing tank and parallel to the rail.

[0007] The support cart is mounted on the rail, and is meshed with a drive wheel rotated by driving a drive means, and the rack chain. A track guide sprocket that is rotated by driving is provided. In another traveling type scum scraper of the present invention, each of the support carts further includes a driving wheel and a driven wheel driven by the traveling.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a front view of the traveling scum scraper according to the embodiment of the present invention, and FIG.
Is a plan view of the traveling scum scraper in the embodiment of the present invention, and FIG. 4 is a side view of the traveling scum scraper in the embodiment of the present invention.

In FIG. 1, reference numeral 11 denotes a two-channel sedimentation basin as a tank to be treated for containing sewage such as sewage. The sedimentation basin 11 is divided into two tanks 12, 13 by a central dividing wall 14. . Side edges 15, 16 extending in the longitudinal direction outside the tanks 12, 13 project toward the partition wall 14, and each of the traveling scum scrapers set on the respective side edges 15, 16. Rails 17 and 18 are respectively laid between the movement start point and the movement end point.

The two-wheeled trucks 21 and 22 as support trucks are movably supported on the rails 17 and 18, respectively, and the two-wheeled trucks 21 and 22 are connected by connecting rods 23. , A traveling vehicle 25 is configured.
In addition, on the traveling vehicle 25, driving wheels 26 and 27 disposed on the two-wheeled vehicles 21 and 22, respectively, are rotated by a traveling motor 35 as driving means, and each rail 17,
A propulsion device 31 for moving the traveling scum scraper between the movement start point and the movement end point along 18 and the liquid level 81 of the sewage of the sedimentation basin 11 supported below the connecting rod 23 A flight swinging device 32 for swinging and raising and lowering the scum scraping flight 33 for scraping the floating scum is provided.

The propulsion device 31 is provided with a traveling motor 35 mounted on the connecting rod 23, a sprocket 36 fixed to an output shaft of the traveling motor 35, and a rotatable along the connecting rod 23. A transmission shaft 37, a sprocket 38 fixed to the transmission shaft 37, the sprockets 36, 38
It comprises a chain 39 stretched between them, and sprockets 40 fixed to both ends of the transmission shaft 37.

In the propulsion device 31 having the above configuration, the sprocket 3 is driven by driving the traveling motor 35.
6 is rotated, the rotation of the sprocket 36 is transmitted to the sprocket 38 via the chain 39 and the transmission shaft 3
7 is rotated. As a result, the sprockets 40 fixed to both ends of the transmission shaft 37 are rotated, and the rotation of each sprocket 40 is controlled by the drive wheels 2 of the two-wheeled trucks 21 and 22.
6 and 27, the traveling scum scraper is moved to the rail 1
It is driven along 7,18.

The flight rocking device 32 includes a rocking motor 45 mounted on the connecting rod 23, a sprocket 46 fixed to an output shaft of the rocking motor 45, and a rotatable along the connecting rod 23. The transmission shaft 47 is disposed, a sprocket 48 fixed to the transmission shaft 47, a chain 49 stretched between the sprockets 46, 48, and a portion of the transmission shaft 47 corresponding to the tanks 12 and 13, respectively. The swing mechanism 52 is provided.

Each swinging mechanism 52 includes a pair of arms 75, a pair of chains 76, and a driven shaft 77.
Each of the arms 75 has one end fixed to the transmission shaft 47 and the other end swingably disposed with respect to the driven shaft 77, and is swung with the rotation of the transmission shaft 47. A sprocket 78 is fixed to the connecting rod 23, and a sprocket 79 is fixed to the driven shaft 77, and the chain 76 is stretched between the sprockets 78, 79.

When the sprocket 46 is rotated by driving the rocking motor 45 in the flight rocking apparatus 32 having the above structure, the rotation of the sprocket 46 is transmitted to the sprocket 48 via the chain 49 and the transmission shaft 47 is rotated. Is rotated. As a result, the transmission shaft 4
The scum scraping flight 33 is swung by the swinging mechanism 52 disposed in 7 and is moved up and down. The inclination of the arm 75 changes with the rotation of the transmission shaft 47. Since the sprocket 79 is rotated in accordance with the change in the inclination of the arm 75, the scum scraping flight 3
3 does not tilt but extends in the vertical direction. Reference numeral 57 denotes a track guide sprocket, and reference numeral 59 denotes a transmission sprocket.

Next, the traveling carriage 25 will be described. FIG. 1 is an enlarged view of a main part of a two-wheeled vehicle according to an embodiment of the present invention, and FIG. 5 is a side view of a connecting rod according to the embodiment of the present invention. Since the two-wheeled trucks 21 and 22 have the same structure, only the two-wheeled truck 21 will be described. In the figure, 23 is a connecting rod, and 51 is a bogie frame attached to the end of the connecting rod 23 in a direction perpendicular to the connecting rod 23. The bogie frame 51 includes beams 52 and 53 having a “C” -shaped cross section that extends in the traveling direction of the traveling bogie 25 (FIG. 4). The guide sprocket 57, the drive wheel 26, and the transmission sprocket 59 are rotatably supported by 55 and 56 and fixed to the axle 54 from the outside to the inside of the sedimentation basin 11 (FIG. 2).

A rail 17 is laid on the side edge 15, and the drive wheel 26 is placed on the rail 17. The drive wheel 26 includes a main body 69 that contacts the top surface of the rail 17, and a guide portion 70 that is integrally formed outside and adjacent to the main body 69 and has a larger diameter than the main body 69. A rack chain 66 is laid on the side edge 15 in parallel with the rail 17.
And the orbit guide sprocket 57 are meshed. A block 67 supports the rack chain 66. In the present embodiment, the rack chain 66 is laid on the other side edge 16 in parallel with the rail 18, but the rack chain 66 may be laid on only one of the side edges 15 and 16.

Further, a transmission shaft 37 is rotatably supported on the connection rod 23 via a bearing 72, and a sprocket 40 is fixed to the transmission shaft 37. The sprocket 40 and the transmission sprocket 59 are connected via a chain 71. Meanwhile, the beam 52,
At the other end of 53, an axle 60 is rotatably supported by bearings 61. A driven wheel and a track guiding sprocket (not shown) are fixed to the axle 60, and the driven wheel is placed on the rail 17. Then, the track guide sprocket is engaged with the rack chain 66. A bearing 64 rotatably supports a swing shaft (not shown) of the swing mechanism 52.

When the sprocket 40 fixed to the transmission shaft 37 is rotated in the two-wheeled vehicle 21 having the above structure, the rotation of the sprocket 40 is transmitted to the transmission sprocket 59 via the chain 71, and the axle 54 rotates. Let me do. As a result, the drive wheel 26 is rotated, and the traveling scum scraper is caused to travel. Note that the driven wheel is rotated as the traveling scum scraper travels.

In this manner, by driving the traveling motor 35, the traveling scum scraper can be caused to travel from the movement start point to the movement end point. With the travel of the traveling scum scraper, The scum scraping flight 33 can be moved along the liquid level 81 of the sewage of the settling basin 11 to forcibly scrape the scum. When the traveling scum scraping machine reaches the movement end point, the swing mechanism 52 is operated, and the scum scraping flight 33 is swung and moved upward. As a result, the scraped scum can be efficiently discharged to a scum skimmer (not shown) disposed at the movement end point.

Subsequently, the traveling scum scraper is moved from the movement end point to the movement start point. During this time, the scum scraping flight 33 is placed in a state of being lifted above the liquid level 81 of the sewage. I will By the way, the driving wheel 2
The track guide sprocket 57 is also rotated with the rotation of 6, and the propulsion force is generated by the engagement of the track guide sprocket 57 and the rack chain 66. Therefore, even when the wind pressure resistance generated when the wind hits the traveling scum scraper or the scum scraping resistance generated when the scum is scraped is large, the drive wheels 2
6 can be prevented from slipping. As a result, since the traveling scum scraper does not meander or vibrate, the traveling of the traveling scum scraper can be stabilized.

Further, since the two-wheeled trucks 21 and 22 are provided on both the rails 17 and 18, respectively, and the traveling scum scraper is supported by four-point supports, it is possible to suppress the occurrence of derailing. . It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0023]

As described above in detail, according to the present invention, in the traveling scum scraper, the rails laid on both side edges of the tank to be processed and the rails are moved on the respective rails. A supporting truck freely supported, a connecting rod connecting the supporting trucks, and a scum scraping flight supported below the connecting rod and scraping scum floating on the liquid surface of the sewage in the tank to be treated And a rack chain laid on at least one side edge of the tank to be processed and parallel to the rail.

The support cart is mounted on the rail, and is engaged with a drive wheel rotated by driving a drive unit, and the rack chain, and drives the drive unit. A track guide sprocket that is rotated is provided. In this case, when the driving wheels are rotated by driving the driving means,
A traveling scum scraper is caused to travel along the rail, and during that time, the scum floating on the liquid level of the sewage in the tank to be treated is scraped.

A track guide sprocket is rotated together with the drive wheels, and a thrust is generated by the engagement of the track guide sprocket with the rack chain. Therefore, even when the wind pressure resistance generated when the wind hits the traveling scum scraper or the scum scraping resistance generated when the scum is scraped is large, it is possible to prevent the drive wheels from slipping. Can be.
As a result, since the traveling scum scraper does not meander or vibrate, the traveling of the traveling scum scraper can be stabilized.

In another traveling scum scraper according to the present invention, each of the supporting carts further includes a driving wheel and a driven wheel driven by the traveling. In this case, since the traveling scum scraper is supported by the four-point support, it is possible to suppress the occurrence of dewheeling.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a main part of a two-wheeled vehicle according to an embodiment of the present invention.

FIG. 2 is a front view of the traveling scum scraper in the embodiment of the present invention.

FIG. 3 is a plan view of the traveling scum scraper in the embodiment of the present invention.

FIG. 4 is a side view of the traveling scum scraper in the embodiment of the present invention.

FIG. 5 is a side view of the connecting rod according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 11 sedimentation basin 15, 16 side edge 17, 18 rail 21, 22 two-wheeled vehicle 23 connecting rod 26 drive wheel 33 scum scraping flight 35 traveling motor 57 track guide sprocket 66 rack chain 81 liquid level

Claims (2)

[Claims] 1. (a) rails laid on both side edges of a tank to be treated, (b) a support trolley movably supported on each rail, and (c) a space between the support trolleys. (D) a scum scraping flight that is supported below the connecting rod and rakes the scum floating on the liquid surface of the sewage in the tank to be treated; and (e) at least one of the tanks to be treated. A rack chain laid on one side edge and in parallel with the rail; and (f) the support cart is placed on the rail and rotated by driving a driving unit. A traveling scum scraper, comprising: a driving wheel; and a track guide sprocket meshed with the rack chain and rotated by driving the driving means. 2. The traveling scum scraper according to claim 1, wherein each of the supporting vehicles includes a driving wheel and a driven wheel that is driven as the vehicle travels.