JPH0757936B2 - Beach cleaner - Google Patents

Description

TECHNICAL FIELD The present invention relates to a beach cleaner used when cleaning a sandy beach such as a beach.

(Prior Art) A beach cleaner that picks up and collects dust such as empty cans and waste paper scattered on beaches such as beaches has a scooping unit at the front of the machine that scoops dust along with sand. There is one in which the sand picked up by the scooping section is sorted by a sieve conveyor from the dust and sifted, and the dust is put into a container.

(Problems to be Solved by the Invention) However, in the conventional beach cleaner, since the sieve conveyor is single, when sand is wet, sorting with dust is poor, and a large amount of sand becomes dust. There was a drawback that it was thrown into the container as it was attached.

In view of such conventional problems, it is an object of the present invention to improve the selection of sand and dust and to reduce the amount of sand adhering to dust and entering the container as much as possible.

(Means for Solving the Problem) In the present invention, the scooping part 7 scoops dust and sand together.
In a beach cleaner in which dust is collected in a container 9 while sieving sand by a sieve conveyor 8, the sieve conveyor 8 has a first conveyor 10 at a front stage and a second conveyor 12 at a rear stage. Is larger than that of the second conveyor 12, and the starting end side of the second conveyor 12 is arranged below the end of the first conveyor 10.

(Operation) Sand and dust are scooped by the scooping section 7, and the first of the sieve conveyor 8
The sand is sieved off by the conveyor 10 and the second conveyor 12, and dusts are put into the container 9 from the second conveyor 12. In this case, the first
Since the sieve mesh of the conveyor 10 is large, most of the scooped sand can be sieved off by the first conveyor 10. Further, when the dust is dropped when it is transferred from the first conveyor 10 to the second conveyor 12, the sand attached to the dust can be decomposed by the impact at that time. Then, the sand can be finally separated while being sent by the second conveyor 12.

(Example) Hereinafter, the present invention will be described in detail with reference to the illustrated examples. 1 to 4 illustrate a self-propelled beach cleaner. First
In FIG. 2 and FIG. 2, reference numeral 1 denotes a machine body having a pair of left and right crawler type traveling devices 2. A control device 3, a control seat 4, an engine 5, a fuel tank 6 and the like are arranged on the left and right sides of the machine body 1. Further, a scooping section 7, a sieve conveyor 8 and a container 9 are arranged in the machine body 1 in the front-rear direction.

The scooping unit 7 is for scooping dust along with sand and is made of a scraper or the like, and is a side plate of the first conveyor 10.
It is suspended between the front ends of 11 in a front-down manner. The scooping portion 7 has a front widening shape and is configured to be wider than the lateral width of the machine body 1. Further, a resin plate or the like is attached to the lower surface of the scooping portion 7 so as to be slippery.

The sieving conveyor 8 is for sorting the sand and the trash out of the sand and the trash scooped by the scooping section 7 and sieving the sand, and is composed of a first conveyor 10 and a second conveyor 12. There is.
As shown in FIG. 3, the first conveyor 10 is composed of rollers 13, 14 supported between a pair of left and right side plates 11 and a wire mesh 15 wound endlessly. The first conveyor 10 is provided in a rearward rising shape via a side plate 11, is pivotally supported by a support shaft 16 of a roller 14 at the rear end so as to be vertically movable, and is interposed between the side plate 11 and the machine body 1. It is supported by a lift cylinder 17 that can be lifted and lowered. The second conveyor 12 is, as shown in FIG.
Rollers 19, 20 are installed between a pair of left and right side plates 18 fixed above, and a wire mesh 21 is wound around the rollers 19, 20. The start end side of the second conveyor 12 is provided with a head drop below the end end of the first conveyor 10 so that when dusts fall from the end end of the first conveyor 10, sand is separated by the attack. It is arranged. An innumerable small projection 22 is provided on the wire net 21 of the second conveyor 12 so as to project to the outer peripheral side, and the sand is separated while vibrating dust on the small projection 22. The wire mesh 15 of the first conveyor 10 has a large mesh, whereas the wire mesh 21 of the second conveyor 12 has a small mesh so that the sand separated by vibration or the like can be sieved off.

The container 9 is composed of a container, a bucket, and the like, and is supported by a pair of left and right columns 23 standing upright on the rear portion of the machine body 1 through a parallel link mechanism 24. Arm 26 of mechanism 24 and container 9
Due to expansion and contraction of the dump cylinder 28 interposed between the bracket 27 and the bracket 27 fixed to the side surface, the dump operation can be performed around the rotation shaft 29. The container 9 has a length substantially the same as that of the scooping portion 7.

The power transmission system for transmitting power from the engine 5 to the conveyors 10 and 12 is provided with a safety device 30 as shown in FIG. That is, the driving shaft 31 and the driven shaft 32 are such that the driven shaft 32 is fitted over the small-diameter shaft portion 33 of the driving shaft 31 via the bush 34 and the flanges fixed to the end portions of the both shafts 31, 32. The parts 34 and 35 are connected to each other by a shear pin bolt 36. Therefore, if an overload occurs, the shear pin bolt 36 is cut off and each part can be protected. The driven shaft 32 is attached to the driving shaft 31 through the thrust collar 37, the thrust bearing 38, etc. by the bolt 39 so as not to fall off, and even when the shear pin bolt 36 is broken,
It does not fall off the drive shaft 31. 40 is a joint.

In the above configuration, when performing the cleaning operation, the front part of the first conveyor 10 is lowered, the scooping part 7 is thrust into the sand up to about 15 to 20 cm, and the vehicle travels forward. Then, the scooping unit 7 scoops sand and dust together, and the sieve conveyor 8 screens the sand and dust to screen the sand downward, and throws the dust into the container 9 for collection. In this case, the scooping unit 7 scoops a large amount of sand together with dust and sends it to the first conveyor 10 side. However, since the mesh of the wire mesh 15 of the first conveyor 10 is large, most of the sand is As shown in FIG. 3, from the start end side of the first conveyor 10 until it reaches the intermediate portion, it is separated from dust and is screened downward. Then, the dusts drop on the second conveyor 12 from the first conveyor 10 with some sand attached, and the sands are separated from the dusts by the impact at the time of this drop. The debris dropped on the second conveyor 12 vibrates while dancing on the small protrusions 22 as shown in FIG. 3, and is sent backward.
By the vibration at that time, sand is further separated from the garbage, and the sand is sieved down from the wire net 21. There is a traveling device 2 below the second conveyor 12, but there is little sand to be sifted here, and since the mesh of the wire mesh 21 is small and fine sand, there is no problem such as biting. . The dusts separated from the sand in this way are put into the container 9 from the second conveyor 12 and collected.

When discharging the dust inside the container 9, the elevating cylinder 25 is extended to lift the container 9 to the upper rear, and then the dump cylinder.
28 is extended and the container 9 is dumped around the rotating shaft 29.

FIGS. 5 and 6 show another embodiment, in which an auger case 41 and a screw auger 42 are provided on the upper side of the scooping section 7, and sand or the like scooped up by the scooping section 7 is rotated by the screw auger 42 to the left or right. It is gathered from both sides to the central side and sent to the first conveyor 10 through the opening 43 at the rear center of the auger case 41.

In this way, the working width can be made much larger than the width of the first conveyor 10.

The power transmission system safety device 30 may be configured as shown in FIGS. 7 and 8. That is, the driving shaft 31 and the driven shaft 32 have a ball between the circumferential groove 44 of the small-diameter shaft portion 33 and the circumferential groove 45 of the driven shaft 32.
Insert 46 and insert the charging hole 47 into the grease nipple.
It is prevented from coming off by sealing with 48. Further, a conical concave portion 49 and a relief hole 50 are formed in the flange portion 34 at point-symmetrical positions, and an extrusion bolt 52 is screwed into a cylindrical body 51 fixed to the flange portion 34 corresponding to the relief hole 50. ing. On the other hand, the flange portion 35 is provided with a holding hole 53 and a tubular body 54, and the ball 55 and the spring 50 are housed inside these, and
An adjusting bolt 57 that compresses the spring 53 so as to urge the ball 55 into the recess 49 of the flange portion 34 is screwed into the tubular body 54.

In this way, the ball 55 is disengaged from the recess 49 against the spring 56 at the time of overload, so that the shafts 31 and 32 rotate relative to each other. Then, when both of them make a half turn, the ball 55 springs 56.
The shafts 31 and 32 are pushed relative to each other and are fitted into the escape hole 50, so that the two shafts 31 and 32 are relatively rotatable thereafter.

When returning, after aligning the holding hole 53 with the escape hole 50, the extrusion bolt 52 is tightened to push the ball 55 from the escape hole 50 to the holding hole 53 side. Next, when the shafts 31 and 32 are rotated relative to each other by a half circumference, the ball 55 engages with the recess 49. in this case,
The adjustment bolt 57 may be loosened.

Although the self-propelled type is shown in the embodiment, it may be a towed type, and a bag or the like may be used as the container 9.

(Effect of the Invention) In the present invention, since the sieve conveyor 8 is composed of the first conveyor 10 and the second conveyor 12, and the sieve mesh of the first conveyor 10 is made larger than that of the second conveyor 12, wastes Almost all of the scooped sand can be sifted by the first conveyor 10. The second conveyor is located below the rear end of the first conveyor 10.
Since the starting end side of 12 is arranged, when the second conveyor 12 falls from the first conveyor 10, the impact force can separate the sand adhering to the dusts. Therefore, the separation of sand is improved as compared with the conventional case, and the amount of sand entering the container 9 can be suppressed as much as possible.

[Brief description of drawings]

1 is a side view showing an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is an explanatory view of the same action, FIG. 4 is a sectional view of the same safety device, and FIG. FIG. 6 is a plan view showing another embodiment,
7 is a sectional view showing the same, FIG. 7 is a sectional view showing still another embodiment,
FIG. 8 is a view on arrow XX in FIG. 1 ... Airframe, 7 ... Scooping section, 8 ... Sieve conveyor, 9 ...
… Container, 10 …… First conveyor, 11 …… Second conveyor.

Claims (1)

[Claims] 1. A beach cleaner in which dust is picked up together with sand by a scooping unit (7) and the dust is collected in a container (9) while sieving the sand by a sieve conveyor (8). (8) has a first conveyor (10) in the front stage and a second conveyor (12) in the rear stage, and the first conveyor (1
The size of (0) is larger than that of the second conveyor (12),
A beach cleaner characterized in that the starting end side of the second conveyor (12) is arranged below the terminal end of the first conveyor (10).