JPS625205Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a mobile sand-settling machine for scraping up sediment, sludge, etc. accumulated at the bottom of a sand-settling basin, waterway, etc.

Conventionally, as this type of sand raking machine, a system has been proposed in which a bucket conveyor with a large number of buckets installed between endless chains is provided to scrape up the sand that has settled and accumulated at the bottom of the sand settling basin. However, settling basins are often equipped with multiple partition walls in the direction of water flow, and in such settling basins, a bucket conveyor installed on a traveling truck is raised,
It must be ensured that the conveyor does not collide with the partition walls of the settling basin. However, if the bucket conveyor is raised vertically, it will protrude to a considerable height above the traveling carriage, which increases the height of the machine and complicates the structure. , the height of the building needs to be sufficiently high, which poses problems such as being extremely uneconomical. Various devices have been proposed to solve this problem, but all of them have complicated structures.

The purpose of this invention is to solve the above-mentioned problems and to provide a raking machine for sand settling, etc., which has a simple structure and is easy to maintain and inspect.

That is, the mobile scraping machine for sand settling and the like according to this invention has a trolley that runs along the sand settling basin above the settling basin, and a pair of front and rear chains are installed in the pond below the trolley in parallel with the carriage. A guide frame is arranged so that it can be raised and lowered, and a pair of front and rear endless chains are wound between the left and right ends of each chain guide frame and the conveyor frame on the trolley, and a large number of buckets are installed between the front and rear endless chains to settle the sand. A bucket conveyor for raking is constructed, and a chain stock arm is pivoted to the shaft end of the chain foil arranged at both the left and right ends of each chain guide frame, and a chain stock guide is fixed to the tip of each chain stock arm. Attach one end of the wire rope for lifting the bucket conveyor, and the other end of each wire rope is wrapped around a pulley attached to the chain guide frame and a pulley attached to the conveyor frame. It is constructed by being wrapped around the hoist drum for lifting the conveyor. Therefore, according to this invention, the chain guide frame is lowered to the bottom of the pond by operating the hoisting machine,
When the bucket conveyor is operated, the sand is successively scraped up from the upper surface of the bucket conveyor, and the bucket conveyor is smoothly operated without being buried in the sand. When raising the bucket conveyor to scrape up sand from an adjacent pond, operate the bucket conveyor lifting machine to wind up the wire rope.
The left and right chain stock arms rotate in opposite directions to stock the endless chain inwardly, and the chain guide frame rises, lifting the bucket conveyor above the partition wall above the pond.
Even when the trolley is moved, it can be moved to the adjacent pond without colliding with the partition wall. When the chain guide frame is moved to the adjacent pond, the winding machine is operated again to unwind the wire rope, and the chain guide frame is lowered onto the sand at the bottom of the pond. In this way, the sand from a plurality of adjacent sand settling basins can be efficiently scraped up sequentially from the upper surface by one scraping machine.

Hereinafter, embodiments of this invention will be described with reference to the drawings. In this specification, "front and rear" refers to the width of the settling basin, that is, toward the traveling direction of the truck, and "left and right" refers to the length direction of the settling basin.

In the drawing, 1 is a sand settling basin, 2 is a partition wall of a plurality of sand settling basins 1, 3 is a bottom of the sand settling basin, 4 is a rail for running a trolley installed over the partition wall 2, 5 is a rail base, and 6 is a sand settling basin. 1 is a running bogie with wheels 7 provided at both the left and right ends of the lower part, and is adapted to run on the rails 4 in the front and back direction. Reference numeral 8 denotes a conveyor frame provided on the truck 6, and the left end thereof is projected outward from the left end of the truck 6 to form a sediment discharge hopper 9 and is provided with a sediment discharge chute 10. Immediately below the sand discharge hopper 9, a sand catch trough/conveyor 11 is arranged on the left outer side of the rail base 5 in parallel thereto.

The conveyor frame 8 is constructed with a predetermined interval in the front and rear, and between the front and rear structural members of the conveyor frame 8, a pair of front and rear chain wheels 12, 13, 14 are connected via shafts 15, 16, 17, respectively. installed. Also, a pair of front and rear chain wheels 18 are pivotally attached to the left end of the truck 6 via a shaft 19. This chain wheel 12 is wedged to a shaft 15, the end of the shaft 15 projects forward, and a driven chain wheel 20 is wedged to the end of the projecting shaft. A drive chain 23 is wound around the drive chain wheel 22 which is wedged to the end of the output shaft. Reference numeral 24 denotes a chain guide frame, which is made of an L-shaped member as shown in Figs. 4 to 7, and is arranged to face each other front and back so that the upper surface of its horizontal part serves as a guide surface, and chain foils are arranged upwardly at both left and right ends of the frame. Mounting brackets 25, 26 are attached, and a pair of front and rear chain wheels 27, 28 are attached to the brackets 25, 26 via common shafts 29, 30. The chain wheels 27, 28 are rotatably attached to shafts 29, 30 via bearings (not shown), and the other shafts 29, 30 are fixed to brackets 25, 26. These chain foils 27, 28 and the chain foils 12, 13,
An endless chain 31 is wound around the chains 14 and 19, and a plurality of bucket belts 32 are attached at predetermined intervals between the front and rear chains 31 via attachment members 33 to form a bucket conveyor. and,
This chain 31 is a roller chain, and rollers 31A are configured to run and roll on the chain guide frame 24. In addition, chain guide frame 2
A plurality of spikes 34 are protruded from the lower surface of the pond 4 at least at both left and right ends, thereby maintaining a minimum distance from the pond bottom 3.

Common shafts 29, 3 of the chain wheels 27, 28
There are chain stock guides 3 at the tips of both outer ends of the 0.
Chain stock arm 37 to which 5, 36 are fixed,
The lower end of 38 is pivoted. The chain stock guides 35 and 36 have a guide plate 39 curved in an arc shape at the distal end and formed of a semicircular plate fixed to the chain stock guides 35 and 36 so as to protrude inwardly toward the orbit of the endless chain 31. The guides 35 and 36 are connected at the front and rear by a connecting plate 39A and a connecting rod 40, so that the guides 35 and 36 rotate synchronously. Further, one ends of wire ropes 41, 42 for lifting the bucket conveyor are attached to the tips of the chain stock arms 37, 38. The wire ropes 41 and 42 are wound around pulleys 45 and 46 mounted on the chain guide frame 24 via brackets 43 and 44, and are passed between the front and rear structural members of the upper conveyor frame 8 via shafts 47 and 48. After being wound around pulleys 49 and 50 which are pivotally connected to each other, the winding machine is wound around the front and rear hoist drums 51, respectively. The front and rear hoist drums 51 are supported on the conveyor frame 8 via a common shaft 52, and a chain wheel 54 wedged on the common shaft 52,
It is configured to be rotated by a drive device 55 via a transmission chain 53 and a driving chain wheel 56.

According to the embodiment of this invention, the chain guide frame 24 is suspended by the endless chain 31 constituting the bucket conveyor and is positioned above the pond bottom 3. When the drive device 21 is started in this state, the bucket 32 moves in the direction shown by arrow A in the figure, and the bucket bottom 3
The sediment deposited on the top is scraped up and dropped onto the chute 10, and falls from the opening of the hopper 9 onto the sand receiving trough/conveyor 11 and is carried out. Therefore, when raising the bucket conveyor, the drive device 55 on the conveyor frame 8 rotates the hoist drum 51 in the winding direction to wind up the wire ropes 41 and 42, and the chain stock arms 37 and 38 Rotating in the direction of arrow B in the figure, the guide plate 39 comes into contact with the endless chain 31,
As the chain 31 is further rotated and pulled inwardly on the left and right sides, the chain guide frame 24 is raised, and the bucket conveyor including the chain guide frame 24 is moved to the cart 6 as shown by the two-dot chain line in FIG. lifted to the bottom. When the bucket conveyor is lifted in this way, the bucket conveyor is located above the top of the settling basin 1,
As the trolley 6 moves, there is no longer any risk of collision, and the trolley 6 is moved forward and backward to position it on the adjacent pond. , 42 are wound back, the chain guide frame 24 is lowered, and the chain stock guides 35 and 36 are pushed outward by the chain 31 and rotated in the direction shown by arrow C in FIG. It reaches the top and becomes the state shown by the solid line in FIG. Then, when the bucket conveyor drive device 21 is operated again, the bucket 32 moves in the direction shown by arrow A in the figure to scrape up the sand. It is delivered onto the conveyor 11 and transported to a predetermined location.

This idea has the above-mentioned configuration, has a low machine height, simple structure, light weight, and is compact, so it is difficult to fit into places with limited space such as inside buildings or underground settling basins. It can be installed easily, and the bucket conveyor can be lowered to the bottom of the pond only during work.
Because the sand is scraped up sequentially from the top, there is no risk of burial due to sand, and when the machine is not in use, all mechanical parts are rolled up above the pond, making maintenance inspections, parts replacement, etc. easy and reliable. It has many effects, such as being able to efficiently scrape up sediment.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention: Fig. 1 is a plan view, Fig. 2 is a front view, Fig. 3 is a left side view of Fig. 2, and Fig. 4 is a view similar to the - line in Fig. 3. 5 is a sectional view taken along the - line in FIG. 4, FIG. 6 is a front view showing the detailed structure of the chain stock arm, and FIG. 7 is a left side view of FIG. 6. 1... Sand settling basin, 3... Sand settling basin bottom, 4... Rail, 6... Traveling trolley, 7... Wheels, 8... Conveyor frame, 12, 13, 14, 18... Chain foil, 24... Chain Guide frame, 27,
28... Chain foil, 29, 30... Shaft, 31
...Endless chain, 31A...Roller, 32...
Bucket, 35, 36... Chain stock guide, 37, 38... Chain stock arm, 4
1,42...wire rope, 45,46,49,
50... Pulley, 51... Hoisting machine drum, 55...
Drive device.

Claims (1)

[Scope of utility model registration request] A trolley that runs along the sand settling basin is installed above the settling basin, etc., and a pair of front and rear chain guide frames are arranged parallel to the carriage in the pond below the carriage, and are movable up and down at both the left and right ends of each chain guide frame. A pair of front and rear endless chains are wound between the front and rear endless chains, and a large number of buckets are installed between the front and rear endless chains to form a bucket conveyor for sand raking. A chain stock arm is pivotally attached to the shaft end of a chain wheel arranged at both ends, and a chain stock guide is fixed to the tip of each chain stock arm, and one end of a wire rope for lifting a bucket conveyor is attached to each end. Each other end of the rope is wound around a pulley attached to a chain guide frame and a pulley attached to a conveyor frame, and then wrapped around a hoist drum for lifting a bucket conveyor placed on the conveyor frame. A mobile raking machine for sand settling, etc.