JPH02161003A - Beach cleaner - Google Patents

Abstract

PURPOSE:To simplify an operation and to promote a working efficiency by providing a conveyer with tines and a bearing frame equipped with a mold board to a machine frame so that they are capable of moving up and down. CONSTITUTION:A conveyer 13 having tines 37 and a mold board 14 are provided to a bearing frame 12. The bearing frame 12 is such that the rear end thereof is mounted to a wheel shaft 16 so that it is capable of oscillating and, at the same time, the front end thereof is provided to a machine frame 11 so that it is capable of moving up and down by a hydraulic cylinder 20. When the bearing frame 12 moves up and down against the machine frame 11, the mold board 14 and conveyer 13 move up and down as a unit, and an inroad amount on the mold board 14 is controlled while keeping a relation of the mold board 14 against the tines 37 in constant. According to the constitution, the operation is simplified, and the working efficiency can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a beach cleaner that picks up and collects trash scattered on a sandy beach.

(Prior Art) Some beach cleaners, which are used by being towed behind a tractor, have a frame with wheels, a conveyor with tines, and a mold board attached to the front side of the conveyor for picking up the conveyor.

When cleaning the sandy beach with this type of beach cleaner, the lower end of the mold board should be dug into the sand as it runs, and if there is not enough sand to cover the front of the mold board, it will be emptied by the tines. Unable to reliably pick up cans, pieces of wood, and other trash.

Therefore, in the past, a link bar was supported between the pair of left and right lower links of the three-point linkage mechanism of the tractor, and the traction rod on the machine frame side was connected to this link bar, and the lower link was moved up and down by the hydraulic system on the tractor side. The method used was to move and adjust.

(Problem to be solved by the invention) However, in the conventional method, the lower link is moved up and down, which has the disadvantage that the traction point of the beach cleaner is not constant, and the vertical movement of the lower link causes a large change in the attitude of the entire beach cleaner. There were drawbacks. Furthermore, the tractor's PTO
In the case of a system in which the shaft and the beach cleaner's PIC shaft are connected by a universal joint shaft, and the beach cleaner side is driven by the power from the PTO shaft, if the overall attitude of the beach cleaner changes, the PIC shaft will change accordingly. When the direction changes, the universal joint shaft bends significantly when turning, etc., sometimes resulting in unreasonable conditions.

In view of such conventional problems, the present invention provides a beach cleaner in which only necessary parts can be moved up and down.

(Means for Solving the Problems) The present invention includes a machine frame 11 having wheels 17 and mounted on a tractor 1, a conveyor 13 having picking-up tines 37 on the outer periphery, and a front portion of the conveyor 13. The machine frame is equipped with an arc-shaped mold board 14 provided on the front side of the sandy beach cleaner, and is installed in a beach cleaner so that trash on the beach is picked up by the tine 37 at the picking up section 48 and collected into the container 15 via the conveyor 13. A support frame 12 is provided which is movable up and down relative to 11, and a conveyor 13 and a mold board 14 are attached to this support frame 12.

(Function) When the support frame 12 is moved up and down with respect to the machine body 11, the moldboard 14 and the conveyor 13 are moved up and down together, and the moldboard 14 is moved up and down while the relationship of the moldboard 14 to the tines 37 is maintained constant. The amount of bite can be adjusted.

(Example) In the following, in FIGS. 1 and 2, which describe the present invention in detail based on the illustrated example, 1 is a tractor, a rear wheel 3 is provided at the rear of the tractor body 2, and a hydraulic device 4 for lifting and lowering the working machine. , a driver's seat 5, a three-point linkage mechanism 6, and the like. Three-point linkage mechanism 6
has a pair of left and right lower links 7, and a link par 8 is supported between the rear ends. Note that the lower link 7 can be raised and lowered by a lift arm 9 of the hydraulic device 4.

10 is a beach cleaner, which is composed of a machine frame 11, a support frame 12, a conveyor 13, a mold board 14, a container 15, and the like. The machine frame 11 has a U-shape in plan view, and has wheels 17 at both left and right ends of an axle 16 supported at the rear end, and a traction rod 18 at the center of the front end. The draw rod 18 is connected to the link par 8 by a pin 19 so as to be able to swing left and right.

The support frame 12 is disposed inside the machine frame 11, and is pivotally supported at its rear end by an axle 16 so that its front side can move up and down. Furthermore, hydraulic cylinders 20 are connected to both sides of the front end of the support frame 12 in order to adjust it up and down.

Note that the upper end of the hydraulic cylinder 20 is connected to a bracket 21 fixed to the machine frame 11.

As shown in FIGS. 3 to 6, the conveyor 13 has belt support plates 23 installed at regular intervals between a pair of left and right endless chains 22, and a heald presser plate 24 attached to the belt support plates 23. A heald 25 of the shape is attached. Each chain 22 is wound between a driving sprocket 26 at the lower front and driven sprockets 27, 28 at the upper rear and lower rear, and is guided by a guide sprocket 29 between the driven sprockets 27, 28. . The shafts 30 to 33 supporting each sprocket 26 to 29 are connected to the support frame 12.
Alternatively, the seed coat is rotatably attached to a pair of left and right side plates 34 fixed thereto via bearings or the like. One end of the shaft 30 is connected to a hydraulic motor 35, and the hydraulic morph 35 is attached to the support frame 12 via a bracket 36. On the outer periphery of the conveyor 13, tines 37 for picking up trash such as empty cans scattered on the sandy beach are installed in a horizontal row in the left-right direction and in the same number as the heald support plates 23 at regular intervals.

As shown in FIGS. 3 to 6, the tine 37 is formed by bending a round bar-shaped spring wire material, and is provided with a mounting portion 38 on the base side so as to have an L-shape. 2
The mounting parts 38 of the wooden tines 37 are connected together by a connecting part 39 to form a set of two, and each tine 37
A winding portion 40 is provided in the middle of the holder, and a hook portion 41 is provided at the tip. The mounting portion 38 of the tine 37 is mounted between the heald presser plate 24 of the conveyor 13 and the tine mounting plate 42 so as to be freely insertable and removable. The tine mounting plate 42 is tightened to the belt supporting plate 23 side by bolts 43 and nuts 44 via the belt holding plate 24 and heald 25, and there is a U-shaped space between the head of the port 43 and the tine mounting plate 42. A leaf spring 45 is interposed. The tine mounting plate 42 has a connecting portion 39 between the mounting portions 38 of the tines 37.
A retaining portion 46 is bent to prevent the detachment and engage with the tine mounting plate 42, and this retaining portion 46 is connected when lifted onto the tine mounting plate 42 by a screwdriver 47 or the like against the leaf spring 45. The mounting portion 38 of the tine 37 can be removed from the section 39 in the direction of the arrow a.

The mold board 14 has a pickup section 4 at the front of the conveyor 13.
8, and helps the tines 37 to pick up the garbage in the pick-up section 48.

The mold board 14 is formed to have an arcuate cross section and has a pair of left and right side cutouts 49, and the side plate portions 49 are rotatably supported by the shaft 30 of the drive sprocket 26. The center upper end of this mold board 14 and the support frame 12
There is a mold board 1 around the axis 3o between the central front end of the
A turnbuckle 50 is provided so that 4 can be adjusted up and down. A dogleg-shaped sand press plate 52 is attached to the front of the lower end of the mold board 14 via a pair of left and right side plates 51.

The container 15 is for storing garbage collected via the conveyor 13, and is pivotally supported via a shaft 54 by a support arm 53 that projects rearward from the rear end of the machine frame 11 or the support frame 12. Note that this container 15 can be dumped around a shaft 54 by a dumping mechanism (not shown). A cover 56 is provided between the left and right side plates 34.

In the above configuration, when cleaning a sandy beach, the beach cleaner 10 is towed by the tractor 1 while the hydraulic motor 35 rotates the conveyor 13 in the direction indicated by the arrow b. Then, the sand pushing plate 52 of the mold board 14 pushes the sand and accumulates it appropriately, while pushing the garbage into the sand. Then, the tines 37 protruding downward from the lower end of the mold board 14 scrape out dirt in the sand with a hook part 41, and pick it up upward along the mold board 14 with a picking part 48. The garbage picked up in this way is
After passing through the conveyor 13, they are sequentially put into a container 15 and collected.

The amount of protrusion of the tines 37 relative to the mold board 14 is adjusted by rotating the mold board 14 using the turnbuckle 50.

Further, the amount of penetration of the mold board 14 into the sandy beach is adjusted by extending and contracting the hydraulic cylinder 2o and moving the support frame 12 up and down about the axle 16 with respect to the machine frame 11. Therefore, there is no need to move the lower link 7 of the three-point link mechanism 6 up and down, and the traction point remains constant.

As shown in FIG. 7, on the front side of the mold board 14, there are provided a sensing plate 57 that moves up and down depending on the amount of sand accumulated, and a switch 58 that turns on and off according to the up and down movement of this sensing plate 57. Alternatively, the hydraulic cylinder 20 may be automatically expanded and contracted by the output of the switch 58 to ensure that a certain amount of sand is always present. It may be controlled so that it accumulates in front of the mold board 14.

The hydraulic motor 35 may be attached to the machine frame 11, or the conveyor I3 may be driven by power from the PTO shaft of the tractor 1 without using the hydraulic motor 35.

Furthermore, the support frame 12 may be pivotally supported by the shaft 3o of the drive sprocket 26.

(Effects of the Invention) According to the present invention, the support frame 12 is provided so as to be movable up and down with respect to the machine frame 11, and the conveyor 13 and mold board 14 are attached to this support frame 12, so that the attitude of the entire beach cleaner can be controlled. The mold boat 14 and the conveyor 13 with tines 37 can be adjusted up and down without changing them. Therefore, the towing point on the tractor 1 can be kept constant, the attitude of the beach cleaner can be stabilized, and even if a universal joint shaft is used,
There is nothing unreasonable about it.

[Brief explanation of the drawing]

Fig. 1 is an overall cross-sectional side view showing one embodiment of the present invention, Fig. 2 is a cross-sectional plan view of the same, Fig. 3 is a plan view of the tine attachment part, Fig. 4 is an enlarged plan view of the same, and Fig. 5 is a cross-sectional side view of the entire embodiment. The figures are a view taken along the line V-■ in FIG. 4, FIG. 6 is a view taken along the line ■■ in FIG. 4, and FIG. 7 is a cross-sectional side view showing the second embodiment. l...tractor, 10...beach cleaner, 11.
...Machine frame, 12...Support frame, 13...Conveyor, 1
4...Moldboard, 15...Container, 17...
Wheel, 20... Hydraulic cylinder, 37... Tine, 4
8... Picking up section.

Claims (1)

[Claims] (1) A machine frame (11) having wheels (17) and towed by a tractor (1), and a picking-up tine (37) on the outer periphery.
), and an arc-shaped mold board (14) provided on the front side of a picking up part (48) at the front of the conveyor (13), and a part for picking up trash on a sandy beach. At (48), the tine (37) picks up the conveyor (1
The beach cleaner is equipped with a support frame (12) that is movable up and down relative to the machine frame (11), and a conveyor (13
) and a mold board (14).