JPS6051367B2 - Sand raking machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sand raking machine in which a raking guide frame for guiding a raking chain with a packet is raised and lowered by swinging a swinging rod.

Conventionally, sand scrapers for lifting sand in sand settling ponds such as those at combined-type sand treatment plants and pumping stations are generally provided with a fixed sand scraper for each settling basin, and when inspecting and repairing the sand scraping machine, It is necessary to drain the water from the settling basin afterward, which requires a long preparation time and is laborious.In addition, in the case of a combined type of sewage treatment plant, if a large amount of sand flows into the settling basin during heavy rain, etc. The lower part of the scraper is buried in the sand, and the scraper cannot be operated unless the accumulated sand is removed.

The sand raking machine of the present invention solves these drawbacks, and includes a raking chain with a packet for raking up settled sand, and a raking guide frame that guides the raking chain at the bottom of the settling basin. and a raking drive device for driving a raking chain, in which the raking chain is hung on the guide portions at the tips of the pair of swinging rods, and the raking guide frame and the above-mentioned Both ends of the hoisting wire suspended on the guide part are fixed at the base side of the swinging rod, and the swinging rod is swung to pull or relax the hoisting wire together with the raking chain for raking. A sand raking machine that moves up and down a guide frame,
By swinging the rocking rod, the raking guide frame can be easily raised and lowered, and raking can be carried out in accordance with the settling height of the sand settling basin, or by moving the raking location. It is efficient and can cover a wide area even with a small capacity raking machine, and since the raking chain is pulled or loosened together with the hoisting wire, it does not interfere with the raking action. The purpose is to provide a sand raking machine.

An embodiment of the present invention will be described based on the drawings.

1 is a sand settling basin, and 2 is a rail laid above the settling basin 1 on the floor in a direction perpendicular to the water flow of the settling basin 1.

The sand raking machine includes a raking machine main body 3 disposed on the floor of the sand settling basin 1, a raking guide frame 4 located at the bottom of the sand settling basin 1 during operation, and a raking machine main body 3 and the raking guide frame 4. It consists of a hoisting wire 5 and a hoisting chi/in 6 that connect the hoisting wires 5 and 6. The scraper body 3 has wheels 8 attached to the lower part of the chassis 7 placed on the rails 2 so that the entire sand scraper can move together with the scraper body 3. Reference numeral 9 denotes a driving device for driving the scraper main body 3, which operates an electric motor 10 to rotate the axle of the wheel 8 through chain transmission, thereby causing the scraper main body 3 to travel and move to a desired location. .

A frame body 11 assembled from shaped steel is fixed onto the chassis 7 of the raking machine body 3, and the frame body 11 has guide portions 12a and 12b for guiding the hoisting wire 5 and the raking chain 6. ,12
c...121 is attached, and the guide portions 12a, 1
2b... has a chain wheel 13 and a lobe wheel 1 at both ends, respectively.
4 and a rotating shaft support 16.

Guide parts 12a, 12b, 12c, 12d and 12g, 1
2h, 121, a chain wheel 13 is fixed to a rotary shaft 15 rotatably supported by a rotary shaft support 16, and a lobe wheel 1
4 is freely rotatably attached. Further, the guide portions 12e and 12f have a rotary shaft 1 rotatably supported by a rotary shaft support 16.
A lobe pulley 14 for fixing the hoisting wire 5 to the outer periphery is fixed to the hoisting wire 5, and a chain wheel 13 is freely rotatably attached thereto. Also, guide section 1
2d (swinging rods 17a and 17b are provided between 512e and between guide portions 12f and 12g, respectively.
It is fixed to the rotating shaft 15 of 2f, and is made swingable by the rotation of the rotating shaft 15, so that the entire guide portions 12d and 12g can swing together with the swinging rods 17a and 17b. Packets 18 are attached to the raking chain 6 at equal pitches. Further, it reaches the guide portion 12a via the guide portions 12j and 12k of the raking guide frame 4, and is attached in an endless manner. Further, the hoisting wire 5 has one end fixed to the lobe wheel 14 of the guide section 12e on the swing rod base side, and is connected to the guide sections 12d, 12c, 12b.
, 12a to the guide portion 12k of the raking guide frame 4,
12j, and is then fixed to the lobe wheel 14 of the guide portion 12f via the guide portions 121, 12h, and 12g. The raking guide frame 4 is disposed approximately parallel to the bottom of the sand settling basin 1, and the guide parts 12j and 12k at both ends, like the guide part 12a, are rotatable around a rotating shaft 15 with a chain wheel 13 and a lobe wheel 14. Support.

Reference numeral 19 denotes a raking drive device, which rotates the rotary shaft 15 of the guide portion 12b via a chain from an electric motor 20.
The raking chain 6 suspended from each chain wheel 13 of the guide parts 12a, 12b, .

When the raking chain 6 moves along the raking guide frame 4, the packet 18 of the raking chain 6 rakes up the sand at the bottom of the settling basin 1 and carries it out, and the guide part 12a of the frame 11 Sand that can be carried out to a conveyor 22 for transporting sand is discharged from a hopper 21 attached to the outside. In addition, a hoisting drive device (not shown) is attached to the frame 11, and an electric motor with a reduction gear is operated to rotate the rotating shaft 15 of the guide portions 12e and 12f.
are rotated in opposite directions, and the swinging rods 17a and 17b are allowed to swing in opposite directions with the rotation of the rotating shafts.

Therefore, the guide parts 12c, 12d, 12e and the swinging rod 17a of the frame 11 and the guide parts 12h, 12g, 12f and the swinging rod 17h are located at left-right symmetrical positions, and the swinging rods 17a, 17
When b swings in opposite directions, the same amount of traction or relaxation is applied to both the left and right sides of the raking chain 6 and the hoisting wire 5 suspended on the guide section. Although the raking chain 6 rotates under the drive of the raking drive device 19, the hoisting wire 5 does not rotate, and suspends the raking guide frame 4, thereby reducing the weight of the raking guide frame 4. It is mainly maintained.

In order to scrape up the settled sand in the sand settling basin 1 with the sand settling machine having the above-mentioned configuration, the scraping guide frame 4 is first lowered to the bottom of the settling basin 1, and the electric motor 20 of the lifting drive device 19 is operated. Then, the rotating shaft 15 of the guide part 12b is rotated counterclockwise via the chain, and the complex wheel 13 fixed to the rotating shaft 15 is rotated to rotate the guiding parts 12a, 12b, etc.
121 and raking guide frame 4 guide part 12j,
The raking chain 6 suspended on a 12k chain wheel 13 is rotated, and the packet 18 of the raking chain 6 is used to remove the sand from the settling basin 1.
The sand at the bottom is scraped up, and the packet 18 is overturned on the upper part of the hopper 21 of the frame body 11 to release the held sand, which is then transported to a desired location by the conveyor 22. When the raking of the sand in the sand settling basin 1 located below the raking guide frame 4 is completed, the raking guide frame 4 is moved to raking the sand at another location.

That is, the electric motor of the hoisting l drive device is operated to move the guide part 1.
Swing rods 17a and 17b are fixed to both rotating shafts, with the rotating shaft 15 of the guide section 2e being rotated counterclockwise, and the rotating shaft 15 of the guide portion 12f being fixed clockwise, with the same amount of rotation.
are respectively swung toward the center of the frame 11. Oscillating rod 1
The guide parts 12d and 12g swing closer to each other due to the swinging of the guide parts 12e and 17b, and the hoisting wire 5 fixed to the lobe pulley 14 of the guide parts 12e and 12f moves towards the swing rods 17a and 1.
They are each pulled towards the center of the frame 11 by the amount of the swing of 7b. As a result, the hoisting wire 5 extending downward from the guide portions 12a, 121 is shortened by the amount of swinging.
Therefore, the raking guide frame 4 is raised by the same amount and occupies the position shown by the dashed line. Swinging rod 17
Since the amount of swing of a and 17b is the same, the raking guide frame 4 can be raised while maintaining its horizontal state. When the raking guide frame 4 has risen to a desired height, the electric motor of the raking drive device is stopped to stop the raising of the raking guide frame 4.

Next, the electric motor 10 of the traveling drive device 9 is operated, and the wheels 8 are rotated through the chain to move the scraper body 3 to travel in a desired direction, and the scraper guide frame 4 is moved to the upper part of the desired location. position. Then, the electric motor of the winding drive device is reversely rotated, and the swinging rod 17a is moved clockwise and the swinging rod 17b is moved counterclockwise to rotate the guide portions 12d, 12.
g are separated from each other, the hoisting wire 5 is relaxed, and the hoisting guide frame 4 is lowered by an amount equivalent to the swinging of the swinging rods 17a and 17b, and the sand at a new location in the settling basin 1 is removed. After positioning the hoist for hoisting, the electric motor of the hoisting drive is stopped. Next, the hoisting drive device 19
The electric motor 20 is operated to rotate the raking chain 6 again, and raking of sand by the packet 18 is started.

In this way, the sand settling machine can process sand in a sand settling pond over a wide range by lifting the sand, raising and lowering the scraping guide frame, and moving the scraping machine body. The sand raking machine of the present invention uses a packet attached to a rotating raking chain to scrape up and transport sand from the bottom of the settling basin, and also swings a swinging rod to pull or relax the hoisting wire. The height of the raking guide frame is raised and lowered depending on the amount of sand in the sand settling basin, and the sand is raked up by changing the height of the raking guide frame according to the amount of sand in the sand settling basin. The hoisting wire and the hoisting chain are both pulled or relaxed when the hoisting guide frame is raised and lowered, so the hoisting wire and the hoisting chain are both pulled or relaxed. The raking function can be maintained even when the raking guide frame is raised and lowered.Furthermore, the raising and lowering of the raking guide frame can be handled by a simple mechanism using a swinging rod, and the lifting amount of the raking guide frame can be controlled easily. It is particularly suitable for use as a sand scraper for small-sized sand settling ponds, and by moving the scraping guide frame, one sand clearing machine can cover a wide area, if necessary, for adjacent ponds. It is possible to scrape up sand of up to 1,000,000,000,000,000,000,000,000,000, which can be used with high efficiency and reduce equipment costs.Furthermore, when the grit and scraper is not in use, the raking guide frame can be positioned above the water surface of the settling basin. As a result, the machine can be easily inspected and repaired, and the progress of corrosion can be suppressed.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a side view of the same. 1...Sand basin, 2...Rail, 3...
...Scraping machine body, 4...Scraping guide frame, 5... Hoisting wire, 6...Scraping chain, 7...・Vehicle chassis, 9... Traveling drive device, 10, 20... Electric motor, 11...
・Frame body, 12a, 12b, 12c...12j, 1
2k...Guidance Department, 13...Chain wheel, 14
... Taichi push wheel, 17a, 17b... Rocking rod, 1
8... Packet, 19... Raking drive device.

Claims (1)

[Claims] 1 Consists of a raking chain with a bucket that rakes up settling sand, a raking guide frame that guides the raking chain at the bottom of the settling basin, and a raking drive device that drives the raking chain. In a sand settling and scraping machine, a scraping chain is hung on the guide portions at the tips of a pair of rocking rods, and both ends of a hoisting wire hanging on the scraping guide frame and the guide portions are hung on the rocking rods. What is claimed is: 1. A sand-settling raking machine, which is fixed at the side, and moves up and down a raking guide frame by swinging a rocking rod to pull or relax a raking wire together with a raking chain.