JPS6345844B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sand settling machine that efficiently scrapes up sand in a sand settling pond.

Conventionally, various types of sand scrapers have been known, and in recent years, various proposals have been made to prevent bucket conveyors from being buried in sand. For example, as shown in Japanese Patent Publication No. 54-25676, an elevating frame (hanging beam) is suspended by a bucket conveyor, and this bucket conveyor is pulled or relaxed by a cylinder to move the elevating frame up and down. Some systems use an auxiliary chain to prevent the frame from tilting, but if the auxiliary chain is used alone to prevent tilting, the tilting of the lifting frame cannot be avoided in cases such as when the sand settling surface is sloping. In the end, there was a risk of operational problems such as poor engagement between the bucket conveyor chain and the sprocket wheel.

The present invention was made in order to eliminate the above-mentioned drawbacks, and by connecting the hanging beam and the traveling carriage with a cross beam, it is possible to raise and lower the hanging beam and the bucket conveyor in a horizontal state at all times. The purpose of the present invention is to provide a sand-slitter and scraper.

Hereinafter, the configuration of the present invention will be explained based on embodiments shown in the drawings. As shown in FIGS. 1 and 2, the sand settling and scraping machine of the present invention includes a running bogie 3 that runs on rails 2 provided on a sand settling basin 1, and a pin connection to the lower surface of this running bogie 3. A plurality of connected cross beams 4, a hanging beam 5 suspended from both ends of the lowermost stage of the cross beam 4 by pin joints, and a bucket conveyor drive device 6 provided on the traveling cart 3. , bucket conveyor tensioning device 7 and hanging beam hoisting/lowering device 8
and an endless bucket conveyor 12 wound around a bucket conveyor drive device 6 and a bucket conveyor tension device 7, between sprocket wheels 10 and 11 provided at both ends of a hanging beam 5,
A rope 14 is wound around a rope sheave 13 provided at the center point of the lowest cross beam, and the hanging beam 5 is raised and lowered in a horizontal state by the hanging beam hoisting/lowering device 8. As the bucket conveyor tensioning device 7, a gravity type device or the like is used, for example. Reference numeral 15 denotes a rope abnormality detection device, which connects the other end of the hoisting rope 14 to detect abnormalities in the rope load (overload, no load). Therefore, even if the descending speed of the hanging beam becomes higher than the sand removal speed, there is an advantage that excessive descending can be prevented by the no-load operation of the rope abnormality detection device 15.

In the sand raking machine configured as above,
The hanging beam 5 is raised and lowered by a hanging beam hoisting/lowering device 8. That is, the sheave 13 is attached to the center point of the lower cross beam, and the rope 14 is
As a book rack, it prevents shaking from side to side (travel direction) when going up and down. By pin-joining the traveling truck 3 and the hanging beam 5 using the cross beam 4, the hanging beam 5 can be maintained in a horizontal position at all times. Furthermore, the tension device prevents the bucket conveyor 12 from sagging when the hanging beam is raised or lowered. When an overload is applied to the bucket conveyor 12, the link 16 that connects the cross beam 4 and the hanging beam 5 is connected by pins 17 and 18, so the tilting of this link 16 prevents the hanging. Beam 5 can move backward and upward. Furthermore, an overload detection device such as a well-known load cell type is built into the bucket conveyor drive device between the drive device base plate and the mount, and this overload detection device is activated when an excessive overload is applied. Configure. In FIG. 2, the portion indicated by the chain line shows the cross beam in a contracted state.

Since the sand raking machine of the present invention is constructed as described above, the hanging beam can maintain a horizontal state both when ascending and descending, and when an excessive load is applied to the bucket conveyor. This has the effect of allowing the user to escape by receding or raising the hanging beam.

[Brief explanation of the drawing]

FIG. 1 is an explanatory front view showing one embodiment of the sand settling and scraping machine of the present invention, and FIG. 2 is an explanatory front view showing details around the cross beam. 1...Sand basin, 2...Rail, 3...Traveling trolley, 4...Cross beam, 5...Hanging beam,
6...Bucket conveyor drive device, 7...Bucket conveyor tension device, 8...Hanging beam hoisting/
Lowering device, 10, 11... Sprocket wheel, 12... Endless bucket conveyor, 13... Rope sheave, 14... Rope, 15... Rope abnormality detection device, 16... Link, 17, 18... Pin .

Claims (1)

[Claims] 1 A running trolley that runs on rails installed on a sand settling basin, multiple sets of cross beams connected to the underside of this running trolley by pin joints, and a carriage suspended from both ends of the lowest stage of the cross beams by pin joints. between the hanging beam, the bucket conveyor drive device, the bucket conveyor tensioning device, the hanging beam hoisting/lowering device, and the sprocket wheels installed at both ends of the hanging beam, which are installed on the traveling truck. , an endless bucket conveyor wound around a bucket conveyor drive device and a bucket conveyor tension device, and winds a rope around a rope sheave provided at the center point of the lowest cross beam to hoist the hanging beam. - A sand raking machine characterized by having a hanging beam raised and lowered by a lowering device.