JPS6154443B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device installed in a sedimentation pond of a sewage treatment plant or a drainage pump station, and for scraping up sediment with a bucket while running a bucket elevator. Especially regarding the structure of the lower part of this bucket elevator.

[Conventional technology]

The concept of scraping up sediment will first be explained in detail based on FIGS. 4 to 7.

Sand, mud, dust, etc. have settled in the sedimentation basin, and in order to scrape this up from the sewage, it is necessary to use multiple sedimentation basins 1.
An on-machine conveyor 3 is mounted on a longitudinal frame 2 that runs across the longitudinal frame 2, and a transverse frame 4 that runs transversely on the longitudinal frame 2 is further provided.

A chute 5 and a machine frame 7 are fixedly provided on the traversing frame 4, and an elevating frame 8 is provided so as to be freely retractable from the lower part of the machine frame 7. This lifting frame 8 has a pair of wheels 1.
1 is provided rotatably via a shaft 10 and a bearing 9, and buckets 1 are provided on this wheel 11 at approximately equal intervals.
A bucket elevator 6 is constructed by hanging three chains 12.

The bucket 13 opens in the direction of movement of the chain 12 and faces the input port of the chute 5, and the discharge port of the chute 5 faces onto the on-machine conveyor 3.

Since the bucket elevator 6 can be raised and lowered freely, and can also move sideways and travel with respect to the sedimentation basins 1, it is possible to continuously scrape up sediment in a plurality of sedimentation basins.

In such a traveling type sediment scraping device,
As shown in FIGS. 8 and 9, the lower part of the bucket elevator 6 (FIG. 7) that moves up and down is a pair of bar-shaped elevator frames 8, and a rake truck is installed close to the inside of the elevator frames 8. 14 is provided, and a wheel 11 is further provided inside, a chain 12 is hung on this wheel 11, the rake wheel 14 and wheel 11 are fitted and fixed to the shaft 10, and the end of the shaft 10 and the lifting frame 8 are connected. A bearing 9 was provided to support the shaft at the lapped portion.

That is, the lower part is composed of a lifting frame 8 that sandwiches the rake wheel 14 and the wheel 11 from the outside, a bearing 9 is provided inside the lifting frame 8 itself, and the bucket 13 is connected to the wheel 11 via a chain. It rotated and had the effect of scraping up the sediment.

[Problem that the invention seeks to solve]

In this prior art, the first drawback is that the lower part of the lifting frame 8 is buried in sediment, resulting in overload when traveling or traveling, and the string line, which can be called foreign matter in the sediment, is attached to the wheel 11 or the rake truck 14. Therefore, the second drawback was that it got entangled with the shaft 10.

A pair of rake wheels 14 excavate hard and compacted sediment to create two coarse and dense grooves, and at the same time a bucket is moved between the two grooves.
A scraping action is generated at the lower side of the lifting frame 8 by the forced rotational force of 3. In addition to the action of the forcing force of the rotation of the bucket 13 between the two grooves, the outer contour of this rotation locus moves little by little as the transverse frame 4 or the vertical frame 2 moves laterally or runs. It has an effect. That is, although the bucket 13 successively scrapes off sediment in new areas, the lower part of the lifting frame 8 is just a frame body, and no action of digging up and scraping occurs.

Since it simply sticks into the sediment and moves laterally, as if applying a brake to the scraping action of the bucket 13, it is overloaded for traversing or running.

The lower part of the bucket elevator 6 includes a pair of rod-shaped frames below the lifting frame 8, a pair of rake wheels 14 and wheels 11 sandwiched between them, and a shaft 10 and a bearing that fit and fix the wheels. 9, so if the rotatable rake wheel 14 and wheel 11 and the lowering and shaft 10 of the non-rotatable lifting frame 8 are arranged together in a complicated manner, the side where the cord line rotates entwined with.

At first, there are only a few strings, but as time passes, the strings continue to grow and become bundles. If this happens, the bundles that have grown around the boundary between the rotating end and the fixed part, or on the fixed side of the part that is not affected by the rotating part, will continue to grow, become larger, and become a nuisance, causing the chain to break or cause problems.・This may lead to the stopping of the driving source.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lower structure of a bucket elevator that reduces traversing and running resistance and prevents cord lines from getting tangled.

[Means for solving problems]

A vertical frame body that can freely run over the sedimentation pond is installed,
A machine frame is provided by rotating on the transverse frame body that runs on the vertical frame body, and an elevating frame is provided so as to appear and disappear from the bottom of the machine frame, and a chain to which multiple buckets are fixed can be freely rotated. In a traveling type sediment scraping device that is suspended from wheels installed on a lifting frame, a pair of bearings is provided protruding from the lowest end of the lifting frame, and the wheels are respectively fitted to both ends of a rotatable shaft that passes through the pair of bearings. The chain is then hung from the wheel.

This has the effect of solving the above-mentioned problems and providing smooth operation. The specific configuration and operation are shown below.

〔Example〕

A first embodiment of the present invention will be described based on FIG. The lower part 28a of the lifting frame 28 is a pair of simple frame members, so-called rod-shaped bodies, and the lower part 28a is connected to the outer surface 28.
d, an inner surface 28c, and a lower end surface 28b,
One inner surface 28c and the other inner surface are connected by a joint material 15, and a bearing seat 15a is appropriately provided to protrude downward, and the lower surface 15c of the bearing seat 15a is disposed from the lower end surface 28b.
Make sure that it is further downward so that it is firmly integrated.

A pair of bearings 16 are provided on the lower surface 15c, which is the lowest end of the elevating frame 28, and a rotatable shaft 1 passing through the elevating frame 28 is provided with a pair of bearings 16.
7 and wheels 11 at both ends of the shaft 17, respectively.
A is fitted and fixed, and fixed with a washer 17A.
A chain 12a with a bucket 19 is hung on the wheel 11a, and the bucket 19 is made rotatable.

The side surface 19b of the bucket 19 is located further outside the core of the chain 12a, and the bucket 19
The scraper blade 19a is located at the lowest end of the component as the bucket elevator 6a.

That is, only the bucket 19 is made to intersect with the sediment 19c, and so-called fixed objects that do not rotate, such as the lower part 28a of the lifting frame 28, the joint material 15, and the bearing seat 15a, are separated from the surface 19d of the sediment 19c. That's what I do.

By configuring the lower part of the bucket elevator 6a in this manner, even a portion larger than the width of the elevator frame 28 can be scraped off by the bucket tray 19. That is, the arrangement of the bearing 16 and the wheel 11a can be freely selected, and the width of the bucket 19 (the facing side 1
9b spacing dimension) can be selected freely, regardless of the structure shape of the sedimentation tank 1, and the sediment 19c
There is no need to be concerned about the unevenness of the surface 19d.

The lowermost end of the lifting frame 28 itself essentially becomes the lower surface 15c of the bearing seat 15a, but it is sufficient that this end is separated from the surface 19d, so the side end b is made to match the outer surface 28d. You are free to do it or not.

Next, a second embodiment will be explained based on FIGS. 2 and 3.

This configuration is used when the bucket 13 and chain 12 that are the same as the conventional ones are used and the precipitate 20c is relatively hard. The rake wheel 14a digs into the surface 20d to create grooves 20a, while the bucket 13 scrapes them off.

The bucket elevator 6b is located at the lower part 2 of the elevator frame 28.
8a, joint material 15, bearing seat 15a, bearing 16, shaft 1
7a and a wheel 11a, and this configuration is almost the same as that of the first embodiment, but a rake wheel 14a is provided at both ends 17c of a shaft 17a via a hub 14b, and the wheel 11a, rake wheel 14b, and the lower part of the elevator frame are connected to each other. The difference is that the scraper 18 is provided in the space formed by 28a. This scraper 18 serves to inhibit the growth of entangled cords and precipitates 20c.

There are two ways to use buckets and chains: the method shown in Figure 1 and the method shown in Figure 2, which can be freely selected according to the conditions, but the purpose of this application is to use bucket elevators. This is the lower structure of the lift frame, and the positional relationship between the lift frame, bearings, and wheels.

〔Effect of the invention〕

The detailed explanation above has the following effects.

(1) There is no longer any overload on the traversing frame or the traveling frame when it is traversing or running.

(2) Entanglement of strings and wires has been reduced, and there is no longer any overload caused by the tension of the chain.

(3) As an indirect effect, the deformation of the frame and the emergency stop of the drive machine are eliminated, so there is no trouble in operation, and even if a large amount of sediment is generated during rain, the set amount of raking can be done. Therefore, overflow from the settling pond,
The ripple effects were large, including interference with pumps.

[Brief explanation of the drawing]

FIG. 1 is a first embodiment of the present invention, FIG. 2 is a second embodiment of the present invention, FIG. 3 is a view taken along the arrow XX in FIG. 2, and FIG. 4 is a front view showing the concept of the prior art. , Fig. 5 is taken from the arrow Y-Y in Fig. 4, and Fig. 6 is taken from the arrow Z- from Fig. 4.
Z, FIG. 7 is a diagram showing a conventional bucket elevator, FIG. 8 is a detailed view showing the H part of FIG. 7, and FIG.
The figure is taken along arrow W-W in FIG. 6a: bucket elevator, 11a: wheel, 12a: chain, 16: bearing, 17: shaft, 1
9: Bucket, 8: Lifting frame.

Claims (1)

[Claims] 1. A vertical frame body that can freely travel over the sedimentation pond is provided, a machine frame is provided that is fixed to the horizontal frame body that runs on the vertical frame body, and an elevator frame is provided so as to appear and retract from the bottom of the machine frame. In a traveling type sediment scraping device, a chain with a plurality of buckets fixed to it is rotatably suspended from a wheel provided on a lifting frame.A pair of bearings is protruded from the lowest end of the lifting frame, A traveling type sediment scraping device characterized in that wheels are fitted and fixed to both ends of a rotatable shaft passing through a bearing, and the chain is suspended from the wheels.