JPH036655Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a dust remover for scraping up garbage from flowing water.In detail, the invention consists of a dust remover body consisting of a bar screen between the rear of left and right side frames, and a motor drive. The drive sprocket, which is rotated by A drive mechanism formed by passing the drive mechanism, and a semicircular curved surface having the same curvature as the guide sprocket or guide disk on the lower half thereof, coaxial with the guide sprocket or the guide disk, and an inclined surface inclined backward on the upper surface. a rake guide plate having a parallel surface parallel to the chain on its lower surface; a rake arm that is attached by a shaft to a chain attachment fixed to the chain; , a contact plate fixed to the base of a rake arm so as to be in contact with the semicircular curved surface and the parallel surface of the rake guide plate.

Conventional dust removers of this type were
As described in No. 141,841, the support shaft to which the guide sprocket or guide disc is attached is fixed to the side frame. Therefore, when the rake scrapes up solid matter below, if the solid matter is hardened or coarse, it will exceed the relief range of the rake due to the elastic plate and damage the rake, guide sprocket, spindle, and bar screen. There is a problem in that a large force is applied to the drive motor, causing damage to the drive motor, and a large load is also applied to the drive motor or chain. Therefore, in the past, a margin was given to the strength or operating range of the elastic plate at the design stage, but sometimes the strength or operating range of the elastic plate exceeded expectations.

The present invention is proposed in view of these points.
The purpose of the present invention is to propose a dust remover equipped with a scraping device that does not apply a large load to the rake, spindle or bar screen, drive motor, chain, etc. when scraping up coarse solids.

The structure of the present invention is described in detail below.The dust remover body consists of a bar screen between the rears of the left and right side frames, and the drive sprocket rotated by the motor is placed above the dust remover body, and the guide sprocket is placed above the dust remover body. or a drive mechanism in which a guide disc is attached to the lower part of the dust remover body via a support shaft and a chain is stretched between the drive sprocket and the guide sprocket or the guide disc, and a drive mechanism that is coaxial with the guide sprocket or the guide disc. A semicircular curved surface having the same curvature as that of the guide sprocket or guide disc is formed on the lower half, an inclined surface or curved surface that slopes backward is formed on the upper surface, and a parallel surface parallel to the chain is formed on the lower surface. a rake arm that is attached by a shaft to a chain attachment that is fixed to the chain; and a rake arm that is in contact with a semicircular curved surface and a parallel surface of the rake guide plate at the base of the rake arm. and a contact plate fixed to the base of the rake arm, in which the guide sprocket or guide disk located below and the support shaft of the rake guide plate are configured to be movable. When raking up solid matter, this coarse solid matter gets caught between the rake and the bar screen, and when the load increases, the support shaft escapes away from the bar screen to relieve the load.

The figure shows one embodiment of the present invention, in which 1 is behind the left and right side frames 2, 2', and screen bars 4 are arranged in parallel at the same pitch between the lower halves to form a bar screen 3. This is the main body of the dust remover.

5 is the upper part of the dust remover main body 1, and the side frame 2,
A drive sprocket 6 is fixed to the center of the drive shaft 5, which is horizontally suspended between bearings (not shown) attached to the shafts 2'. 10
is a motor for driving the drive shaft 5.

7 is the lower part of the dust remover main body 1, and the side frame 2,
2', both ends of which are connected to the side frame 2,
A guide disk 8 (or chain sprocket) is attached to the support shaft 7 which protrudes outward from the shaft 2'.

Reference numeral 9 denotes a chain extending between the drive sprocket 6 and the guide disc 8, and the drive sprocket 6, the guide disc 8, and the chain 9.
Hereinafter referred to as the drive mechanism.

11 and 11' are rake guide plates fixed to the support shaft 7 on both sides of the guide disk 8,
This configuration (shape) is as shown in FIG.
2' The upper surface is a sloped surface 1 that is sloped (or curved) backwards.
3, 13', and the lower surface consists of parallel surfaces 14, 14' parallel to the chain 9. Note that the mounting angle of the rake guide plates 11, 11' can be adjusted.

Reference numeral 15 designates a rake arm having a base 18 supported by an attachment 16 fixed to the chain 9 so as to freely rotate through a shaft 17, and a rake 20 attached to the tip.

19, 19' are the base parts 1 of the rake arm 15;
8 is a contact plate made of metal or plastic, which is a part located inside when the rake arm 15 turns, and is attached at a position opposite to and in contact with the rake guide plates 11, 11'. In the figure, 23 indicates a scraper.

Reference numeral 24 denotes a bearing that holds the support shaft 7 on the outside of the side frames 2, 2', and this bearing 24 is a torsion shaft fixed to the side frames 2, 2' via a nut 30 and a fixing plate 26, respectively. It is fixed to the tip of a torsion bar 25 whose one end 25' is inserted and fixed into the hole 28 of 27.

Note that in the embodiment, the torsion bar 25 holds the bearing 24 (support shaft 7) in a downward direction.
It may also be held in an upward position as shown in FIG. 4b. Further, the torsion bar 25 may be located inside the side frames 2, 2'.

The dust remover according to the embodiment has the above-mentioned configuration, and as shown in FIG. Guide plate 11, 11'
is positioned above the water surface 22. Note that depending on the installation conditions, the support shaft 7 may be used by being submerged in water.

In this state, the waste water that has flowed through the drain groove 21 flows downstream through the bar screen 3, but the garbage (solid matter) in the waste water flows onto the bar screen 3 and accumulates there. The collected garbage is scraped upward along the bar screen 3 by a rake 20 and removed to the outside of the bar screen 3.

During the above-mentioned raking action, the rake arm 1
During raking, the rake arm 5 moves over the bar screen 3 in a pulled state by the chain 9, and when it leaves the bar screen 3, it hangs downward due to its own weight, and when the drive sprocket 6 is turned, the rake arm 1
5 gradually becomes a lying state, and on the return, moves on the chain 9 so as to be substantially parallel to it. When the rake arm 15 approaches the guide disc 8, the contact plates 19, 19' of the rake arm 15 first slide onto the rake guide plates 11, 11', and as shown in FIG.
gradually begins to rotate around the guide disk 8. At this time, in the rake arm 15, the contact plates 19, 19' are connected to the semicircular curved surfaces 12, 1 of the rake guide plates 11, 11'.
2', the rake arm 15 is prevented from reversing about the axis 17, and turns half around the guide disk 8 in that state.
As soon as the rake 20 completes half a turn, it comes into contact with the base 3' of the bar screen 3 and scrapes up the debris.In this raking process, the lower surface of the rake guide plates 11, 11' Since they are parallel, the rake arm 15 is pressed against the bar screen 3 side until the elastic plates 19, 19' are separated from the parallel surfaces 14, 14'.

When the rake arm 15 is regulated by the action of the rag guide plates 11 and 11', if large particles are caught, a load will be applied to the rake arm 15, and the support shaft 7 will move between the torsion bar 2 in the elongated hole 29.
5 moves away from the bar screen 3 to eliminate the load.

In addition, in the embodiment, the torsion bar 25 is connected to the side frame 2,
2' to hold the bearings 24 of the support shaft 7, and the torsion bar 25 is shown in Fig. 4a.
As shown in FIG. 2, the guide disc 8 and the rake guide plates 13, 13' may be held by one piece at the center of the guide plate 8. Further, as a means for elastically holding the support shaft 7, the long holes 29 of the side frames 2 and 2' are used.
It is also conceivable to directly hold the bearing 24 or the support shaft 7 inside with a spring.

As described above, this invention eliminates the load that is applied to the rake, rake arm, contact plate, rake guide plate, bar screen, drive motor, chain, etc. when the spindle escapes when a large object is caught between the rake and the bar screen. Since these parts are not damaged, and dust is removed smoothly, the generation of noise and vibration is also reduced.

Next, since the present invention elastically holds the spindle, the elastic strength can be freely selected by changing the elasticity of the spring or, in the above embodiment, the torsion bar, and the rake can be bitten on the left and right sides. When an uneven amount occurs, the rake freely tilts left and right to prevent strain.

Next, when the torsion bar is inserted into the hole of the torsion shaft and fixed, the torsion shaft can be rotated to change the direction (angle) of the hole and the position of the support shaft can be freely selected via the torsion bar. It is possible to adjust the rake efficiency by adjusting the force with which the rake contacts the bar screen, and it is also possible to adjust the tension of the chain by adjusting the length of the torsion bar.

[Brief explanation of the drawing]

FIG. 1 is a front view of a dust remover embodying the present invention, FIG. 2 is a side view, FIG. 3 is a side view of the scraping device, and FIG. 4 is a perspective view showing the support structure of the support shaft. 1...Main body, 2, 2'...Side frame, 7...Spindle,
8...Guide disk, 9...Chain, 11,1
1'... Rake guide plate, 15... Rake arm,
19, 19'...Contact plate, 24...Bearing, 25...
...Torsion bar, 27...Torsion shaft, 28
...hole.

Claims (1)

[Scope of claim for utility model registration] A dust remover body consisting of a bar screen between the rears of the left and right side frames, and a drive sprocket rotated by a motor driven by a guide sprocket or guide circle above the dust remover body. A drive mechanism comprising a plate attached to the lower part of the dust remover body via a support shaft and a chain spanning between a drive sprocket and a guide sprocket or a guide disc; A rake guide formed by forming a semicircular curved surface with the same curvature as the guide sprocket or guide disc on the half, forming a backward inclined or curved surface on the upper surface, and forming a parallel surface parallel to the chain on the lower surface. a plate; a rake arm that is freely attached by a shaft to a chain attachment fixed to the chain; and a rake arm that is in contact with a semicircular curved surface and a parallel surface of a rake guide plate at a base of the rake arm. a contact plate fixed to the base of the dust remover, the dust remover comprising: a guide sprocket or a guide disc located below the guide sprocket or a support shaft of the rake guide plate that are movable;