JPH0218113Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a grid-type dust removal device installed in a waterway, and more particularly to a device for scraping sieve residue caught in a grid.

As shown in FIGS. 1 and 2, the conventional waterway dust removal device has a grid 3 installed in the middle of a waterway 1 so as to partition the waterway via a frame 2, and a chain wheel 4 and a chain wheel facing parallel to the surface of the grid 3. 5 are provided above the waterway, and an endless chain 6 is rotatably suspended between the chain wheel 4 and the chain wheel 5, and the upper end of a rake arm 8 is pivotally connected to each endless chain 6 via a pivot 7. , the rake arms 8 are connected with a rake 9 at the lower end and a through shaft 10 at the middle part so as to face each other, and guide rollers 11 are attached to both ends of the through shaft 10.
A guide rail 12 is provided parallel to the grid 3,
A raking bucket 13 is provided in the middle of the shaft 7, a dust pan 14 is provided near the chain wheel 4 so as to be in sliding contact with the bucket 13 along the chain 6, and a raking bucket 13 is provided near the rising end of the rake 9. A wiper 15 is supported and provided on a frame 2 so as to be swingable so as to interfere with each other.

The chain 6 rotating in the direction of arrow A brings the rake 9 into contact with the lower end of the third surface of the grating via the rake arm 8, and pulls up the rake arm 8 so that the rake 9 scrapes up the sieve residue along the third surface of the grating. When the rake 9 approaches the rising point, it interferes with the wiper 15 and shakes off the raked sieve residue onto the dust pan 14. When the shaft 7 bypasses the chain wheel 5, the bucket 13 attached to the shaft 7 is reversed and discharges the sieve residue, which passes through the rake arm 8 to the rake 9.
Move to a course away from the 3 sides of the grid. When the descending shaft 7 bypasses the chain wheel 4, the bucket 13
The sieve residue on the dust pan 14 is scooped out, the rake 9 is brought into contact with the grating 3 surface via the rake arm 8, and the above operation is repeated to remove dust from the grating surface.

However, the rake arm 8 whose upper end rotates together with the chain 6 and whose middle part is restrained by the guide rail 12
The lattice 3 facing the lattice 3 traps the huge inflow that has reached the upstream surface of the lattice 3, causing damage. Furthermore, when the pivot 7 passes through the lower half of the rotational path of the chain 6, the rake arm 8 comes to interfere with the grating 3 and the dust pan 14, cutting out a part of it, making dust removal incomplete. There were other drawbacks.

In view of the above-mentioned drawbacks, the object of this invention is to provide a dust removal device that eliminates the interference between the rake arm and the grid, and eliminates accidents caused by huge inflows.

The configuration of this invention will be explained based on the drawings of the embodiment. Fig. 3 shows the entire embodiment, Fig. 4 shows the main part from the front, Fig. 5 shows the gearbox, and Fig. 6 shows the gearbox.
The figure shows a pivot box for the secondary arm, and members common to those in the conventional example are designated by the same reference numerals and their explanations will be omitted.

A pivot guide 16 for bypassing the chain wheel 4 is provided along the endless chain 6. A pivot shaft 17 passes through the endless chain 6, and a primary arm 18 is rotatably fitted in the middle of the pivot shaft 17, and rotating rollers 19 are attached to both ends of the pivot shaft 17.
The rotary roller 19 is rotatably fitted into the pivot guide 16. A primary intermediate shaft 20 parallel to the pivot shaft 17 is fixed to the free end of the primary arm 18, and a secondary intermediate shaft 21 is attached parallel to the primary intermediate shaft 20.
The primary intermediate shaft 20 and the secondary intermediate shaft 21 are connected via a gear box 22 so as to interlock with each other. Running rollers 23 are rotatably provided at both ends of the intermediate shafts 20 and 21, and the running rollers 23 are installed in running guide rails 24 laid parallel to the grid 3.
Insert so that it can roll freely. Inside the gearbox 22,
There is a main gear 25 fixed to the primary intermediate shaft 20 and a subordinate gear 26 fixed to the secondary intermediate shaft 21 and smaller than the main gear 25. A deformed star-shaped rotor 27 is firmly fitted onto the secondary intermediate shaft 21, a polygonal outer box 28 is fitted on the outside corresponding to the rotor 27, and a cylindrical elastic material is provided between the rotor 27 and the outer box 28. 29 is press-fitted, and the rotor 27
End plates 30 are provided at both ends of the outer box 28 to make sliding contact with both ends of the outer box 28, thereby forming a pivot box 31. A secondary arm 32 is provided protruding from the outer box 28, and a rake 9 is fixed to the free end of the secondary arm 32. A steady rest 33 is fixed between the end plates 30 so as to come into contact with the secondary arm 32.

Next, the operation of the above configuration will be explained.

The primary intermediate shaft 20, the gear box 22, the secondary intermediate shaft 21, and the pivot box 31 are connected to the primary arm 18 and the secondary arm 32.
Flexibly connect them. The main gear 25 and the slave gear 26 in the gearbox 22 are interlocked to open and close the bending of the primary arm 18 and the secondary arm 32. During scraping of sieve residue, the rotor 27 and elastic material 29 in the pivot box 31 relieve the rotational pressure in the direction in which the rake 9 separates from the grid 3, and the steady rest 33 rotates in the opposite direction. to stop.

When the chain 6 is rotated in the B direction and the pivot 17 moves toward the chain wheel 5, the bending angle between the primary arm 18 and the secondary arm 32 is opened, and the rake 9 sweeps the grid 3. When the pivot 17 bypasses the chain wheel 5, the bending angle between the primary arm 18 and the secondary arm 32 is closed, and the rake 9 moves away from the grid 3 and begins to descend. When the axis 17 bypasses the chain wheel 4,
The rake 9 approaches the grating 3 by opening the bending angle between the primary arm 18 and the secondary arm 32. When the rake 9 approaches the grid 3 and traps the coarse inflow, the secondary arm 32
turns the outer box 28 of the pivot box 31 and deforms the elastic material 29 between it and the rotor 27 to relieve the insertion pressure and buffer the impact.

As explained above, in this invention, a pivot 17 is attached to the rotatable endless chain 6, a primary arm 18 is attached to the pivot, and a primary intermediate shaft 20 is attached to the other end of the primary arm.
is fixed, and a secondary intermediate shaft 2 is parallel to the primary intermediate shaft.
1, gears 25 and 26 are fixed to each of the primary intermediate shaft 20 and the secondary intermediate shaft 21 so as to mesh with each other, and a pivot box 31 serving as a buffer means is provided on the secondary intermediate shaft 21.
Since the secondary arm 32 is fixed to the pivot box, when the pivot 17 moves from the ascending side of the chain 6 to the descending side, or from the descending side to the ascending side, the primary arm 18 moves from the primary intermediate The rocking movement is transmitted to the rotational movement of the primary intermediate shaft 20, and the rotational movement of the primary intermediate shaft is transmitted to the rotational movement of the secondary intermediate shaft 21. The rotational movement is transmitted to the swinging movement of the secondary arm 32, and the sieve residue scraping operation and scraping preparation operation are repeated.

At this time, by changing the gear ratio between the main gear 25 and the follower gear 26, the swing angle of the secondary arm 32 can be easily changed. By forming the driven gear 26 small, the swing angle of the primary arm 18 can be amplified and transmitted to the swing angle of the secondary arm 32. As a result, for example, when the secondary arm 32 descends and enters the water surface, the angle of the secondary arm 32 can be made substantially horizontal.

Also, the chain 6, the primary arm 18, the intermediate shafts 20, 2
1. All components such as the secondary arm 32 are arranged only on the upstream side of the grating 3, so interference between the arm and the grating is eliminated, making it possible to remove dust from the entire surface of the grating 3.
Further, the secondary arm 32 is connected to the secondary intermediate shaft 2 via a buffer means.
1, it was possible to eliminate the impact caused by the pinching of coarse foreign objects.

[Brief explanation of the drawing]

Figure 1 is a side view of the conventional example, Figure 2 is a front view of the conventional example, Figures 3 and 4 are a side sectional view and main part front view of the embodiment, respectively, and Figure 5 is a sectional view of the gearbox. , FIG. 6 is a detailed view of the pivot box. 3: Dust removal grid, 6: Endless chain, 9: Rake,
18: Primary arm, 20, 21: Intermediate shaft, 22: Gearbox, 25: Main gear, 26: Slave gear, 31:
Piston box.

Claims (1)

[Scope of utility model registration request] Above and above the upstream side of the dust removal grid that crosses the waterway, a pair of chain wheels on both sides are installed above and below, approximately parallel to the dust removal grid, and a pair of endless chains on both sides are stretched between the upper and lower chain wheels, and both ends of the shaft are attached to the endless chains. a primary arm is attached to the pivot shaft, a primary intermediate shaft substantially parallel to the pivot shaft is fixed to the other end of the primary arm, a secondary intermediate shaft is provided substantially parallel to the primary intermediate shaft, and the primary intermediate shaft is provided substantially parallel to the primary intermediate shaft; Gears are fixed to each of the shaft and the secondary intermediate shaft so that they mesh with each other,
Running rollers are rotatably attached to both ends of each of the primary intermediate shaft and the secondary intermediate shaft, a pair of running guide rails on both sides for guiding the running rollers are provided substantially parallel to the dust removal grid, and the secondary intermediate shaft A single rake type dust remover in which a secondary arm is fixed via a buffer means, and a rake is fixed to the lower end of the secondary arm.