JP2000257040A - Sand ground cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sand ground cleaner capable of collecting fine dust, increasing work efficiency, and sifting satisfactorily irrespective of the dry and wet status of sand ground, and excellent in durability. SOLUTION: A sand ground cleaner comprises a self-propelling body frame 1, a screen 4 which is disposed on the underside of the body frame 1 aslant toward the lower front and sifts sand mixed with dust while moving it rearward by rotating a number of shafts 9 and 21 in which a number of sift forming members comprising a star type soft material having a number of arms bent so as to move toward the rear in rotating direction are incorporated and which are installed variably so that the members adjacent to each other form equal intervals, and a scraper 40 which is disposed forward of the screen and of which front end part can be inserted into the sand ground. It further comprises a sand scraping device 45 which is disposed forward of the scraper and scrapes and backward by the rotation of a rotor 51 with a scraping plate 50 and a dust box 53 storing sifted product on the screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sand cleaner for collecting dust and cleaning the sand, such as sandy beaches and dunes.

[0002]

2. Description of the Related Art Conventionally, sand cleaners of this kind include:
Wire fork type (see Japanese Utility Model Laid-Open No. 4-972828 and Japanese Utility Model Laid-Open No. 6-12519) and trommel type (Japanese Patent Publication No. 60-15765, Japanese Patent Publication No.
No. 33926) and a vibrating screen type (see Japanese Utility Model Publication No. Hei 2-13533) are known. The wire fork type is provided with a dust transfer mechanism provided on a downwardly sloping front in a body frame that is driven or driven by a towing vehicle, and a dust box is provided at a rear portion of the dust transfer mechanism. The transfer mechanism includes an endless belt that is driven to rotate, and a number of wire forks (tines) that are implanted on the surface of the endless belt, and a number of tines extending toward the dust box near the rear end of the dust transfer mechanism. A sorting device consisting of a sieve wire is arranged, and the sorting device is configured to vibrate or swing,
Dust on or in the sand is picked up by a wire fork, transported after being mounted on an endless belt, and then sieved with a sorting device to store the dust in a dust box.
Further, the trommel type includes a movable frame towed by a vehicle, and a frusto-conical drum rotatably supported around the axis by the frame, and flows in through a front opening of the drum. Sand and dust are separated by centrifugation by rotation of the drum, and substantially only sand is discharged to the outside from the net-like drum side wall, and the separated dust is stored in a dust box from a rear opening by a spiral blade provided inside the drum. It is. Further, in the case of the vibrating screen type, a collecting unit for collecting objects such as garbage scattered on the ground surface collecting surface is arranged on the body frame, and in front of the collecting unit, scattered materials scattered on the surface collecting surface are collected. A pick-up / discharge unit for picking up and picking up and discharging toward the upper part of the collecting unit is provided, and a small unit such as sand contained in the discharged unit is received above the collecting unit and discharged from the pick-up / discharge unit. An oscillating sorting unit that sorts and discharges the discharged material and drops the collected objects from the edge to the collecting unit is arranged.Furthermore, between the upper sorting unit and the lower collecting unit, it leaks from the sorting body. A discharge port for receiving the discharged waste and discharging it to the outside of the machine is formed.

[0003]

However, in the conventional sandy cleaner, garbage such as seaweeds, vinyl bags, fishing nets, strings, ropes and the like on or in the sandy ground are entangled with the wire fork, or are not sewn on the screen surface. Clogging due to entanglement is easy to occur, the spacing between wire forks and the screen opening cannot be reduced, it becomes difficult to collect fine garbage, and the machine itself is frequently cleaned during operation. Must be performed, resulting in a decrease in work efficiency. In addition, although sieving with a screen was good in the operation of sand in a dry state, it was not performed well in the operation of sand in a wet state due to clogging, and there was a problem that sand was mixed into the dust box. Further, the wire fork type has a disadvantage that the wire fork is easily damaged. Therefore, the present invention can collect fine garbage, improve the work efficiency, and can perform good sieving regardless of whether the sand is dry or wet, and further, have excellent durability. It is intended to provide a sandy cleaner.

[0004]

In order to solve the above-mentioned problems, a sandy ground cleaner of the present invention is provided with a body frame which runs by itself or is towed by a towing vehicle, and is disposed on a lower part of the body frame at a downward slope. It is possible to incorporate a large number of sieve forming members made of a soft material in a star shape having a large number of arms curved so as to retreat backward in the rotational direction, and to make it possible to change the interval between adjacent ones so as to form an equal interval. By rotating a large number of provided shafts, a screen that sifts the sand mixed with garbage while moving it backwards, and a scraper that is arranged in connection with the front end of the screen and can infiltrate the front end into sandy ground, A sand scraping device that scrapes sand mixed with garbage backwards by rotating a rotor that is arranged in front of the scraper and incorporates a number of scraping plates radially around its periphery, and a screen It is arranged lined in the end, characterized in that it comprises a dust box for accommodating the oversize products of the screen. The means for varying the distance between the axes of the screen includes a pair of link members pivotally connected in an X-shape, and a number of segments supporting the ends of the axes connected by a pair to form a number of parallelograms. It is preferable that the link mechanism be provided in a straight line. It is preferable that the screen has a variable inclination angle. It is preferable that the scraper has a variable scooping angle. It is preferable that the sand scraping device can be moved up and down. Further, it is preferable that the dust box can be moved up and down and tilted.

[0005] It is desirable that the shaft end is supported by one link member of the segment. Also, the end of the shaft may be pivoted at the pivot of a pair of link members of the segment. It is desirable that the angle of inclination of the screen be variable in the range of 10 to 20 °. The inclination angle is 10 °
If it is less than this, the screen length will be longer than necessary,
If the angle exceeds 20 °, the transported material rolls forward, making transport difficult. A more desirable inclination angle is 15 to 17 °. It is desirable that the scraping angle of the scraper is variable in the range of 20 to 60 °. If the scooping angle is less than 20 °, the rotor diameter becomes unnecessarily large, and if it exceeds 60 °, the rotor load becomes large. A more desirable scoop angle is 30 to 45 °. The rotation of the shaft of the screen, the rotor of the sand scraping device, and the like is performed by a hydraulic motor, and it is desirable that the rotation speed be variable.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1, 2 and 3 are a side view, a plan view and a rear view, respectively, showing an outline of an embodiment of a self-propelled sandy land clean according to the present invention. In the figure, reference numeral 1 denotes a self-propelled body frame (carriage) mounted on a frame 3 of a crawler 2, and a hydraulic device serving as a driving source for a driver's seat and the crawler 2 on the body frame 1, although not shown. And an engine are installed.

At the lower part of the body frame 1, sand mixed with garbage such as seaweed, plastic bags, plastic bottles, empty cans, fishing nets, strings, ropes, etc. is moved backward (to the right in FIGS. 1 and 2). A screen 4 with a variable opening to be sieved is located between the crawlers 2 on both sides, and is disposed at a downward slant. That is, the screen 4 is formed of a channel steel that is opened outward, and, as described later, forms a rectangular sieve frame 5 that is long in the front-rear direction (the left-right direction in FIGS. 1 and 2) in combination with the body frame 1. It has a pair of side frames 5a to be formed, and the both side frames 5a are rotatably provided with the upper rear end pivotally supported via horizontal pins 6 on both rear sides of the body frame 1, and It is supported by a screen hydraulic cylinder 7 interposed between the upper front end and both sides of the front part of the body frame 1.
And the tilt angle is variable in the range of 10 to 20 ° with respect to the horizontal plane. As shown in FIG. 4, bearing brackets 8 are respectively provided vertically below the front ends of both side frames 5 a of the sieve frame 5, and a shaft 9 is appropriately positioned below the side frames 5 a between both brackets 8. So that it is mounted horizontally. A pulley 10 is attached to one end (the lower end in FIG. 2) of the shaft 9.

At the front ends of the two side frames 5a of the sieve frame 5, pins 1 which are located slightly above the lower flange and above the shaft 9 and project horizontally outward are provided.
1 are supported via a bracket 12 and both pins 1
1, one end of a link mechanism 13 formed by linearly connecting a number of parallelograms connected in a pair with each other is pivotally supported. The link mechanism 13 is for making the mesh size of the screen 4 variable in the longitudinal direction of the screen frame 5, and is a link member 14a having a substantially triangular plate shape.
And a pair of ring members 14b each having a substantially rectangular plate shape having the same length as the longest side thereof, and a ring member 14b having a middle portion between the longest side edge portion of one link member 14a and the other. An X-shaped segment 14 is pivotally connected in the middle of the link member 14b, and a number of the segments 14 are formed in pairs around both ends of the longest side of one link member 14a and both ends of the other link member 14b. A large number of connected parallelograms are provided so as to form a straight line. As shown in FIG. 5, the other end of the link mechanism 13 is provided below the rear end of the side frame 5a in parallel with the longitudinal direction of the side frame 5a, with the front end of the aperture adjusting bolt 15 and the clevis 16, The rear end of the aperture adjusting bolt 15 is screwed into a nut member 19 attached to a bracket 18 vertically provided at the rear end of the side frame 5a. A roller 20 is attached to one (upper in FIGS. 4 and 5) of the connecting portion of the adjacent segment 14 in the link mechanism 13, and the roller 20 is attached to the upper surface of the flange below the side frame 5a. It is provided so as to roll on the top.

[0009] Between the link members 14a of the opposing segments 14 in the link mechanisms 13 on both sides of the sieve frame 5, the link members 14 of the adjacent segments 14 are provided.
The shafts 21 are rotatably mounted so as to be positioned at the same distance from the pivot point of the shafts 14a and 14b, and one end (the lower end in FIG. 2) of each shaft 21 is positioned from the second front one. Every other pulley 22 is attached, while at the other end, every other pulley 22 is attached from the first front. In the link mechanism 13 on one side of the sieve frame 5 (the lower side in FIG. 2), the lower part of one link member 14a of every other segment 14 from the first is provided with adjacent pulleys 10, 22 and the like. A shaft 23 is horizontally implanted outwardly, and an intermediate pulley 24 is attached to the shaft 23. On the other hand, the shaft 23 is connected to the first link mechanism 13 on the other side.
One link member 14a of every other segment 14
A shaft 23 to which an intermediate pulley 24 is attached in the same manner is planted at the lower part of. Further, at the rear end of both side frames 5a of the sieve frame 5, as shown in FIGS. 3 and 5, a bracket 25 protruding outward is provided.
The rear end of a tension adjusting bolt 27 parallel to the longitudinal direction of the side frame 5a is screwed into the nut member 26 attached to the nut 5. A tension pulley 28 is mounted on the front end of the tension adjusting bolt 27 via a clevis 29 and a pin 30. Further, in front of the tension pulley 28, a direction changing pulley 31 is mounted on both side frames 5a via a bracket 32 and a pin 33. And each pulley 10, 22, intermediate pulley 2
4. Tension pulley 28 and direction changing pulley 31
The endless belt 34 is wound around the lower half of each of the pulleys 10 and 22, the upper half of the intermediate pulley 24, and the direction changing pulley 3 from the last pulley 22.
1, the tension pulley 31 is wound around the pulley 31 and the pulleys 10, 22 at the forefront. As shown in FIG. 2, one end of the rearmost shaft 21 to which the pulley 22 is not attached and the other end of the shaft 21 immediately before the rearmost end are connected to a hydraulic motor 36 mounted via a bracket 35. Linked and linked. Both hydraulic motors 36 are driven synchronously.

As shown in FIGS. 2, 3, 6 and 7, a large number of star-shaped sieve forming members 37 form a required interval in the axial direction and are adjacent to each shaft 9, 21. By arranging the shafts 9 and 21 alternately between them, a constant sieve of 4.5 mm in the width direction of the sieve frame 5 and the link mechanism 13 in the longitudinal direction of the sieve frame 5 by the link mechanism 13. It is mounted so as to form a variable sieve in the range of 5-20 mm (preferably 4.5-9 mm). Each sieve forming member 37 is formed of a soft material such as plastic (for example, polyurethane) or rubber, and has a boss 38 fitted on the shafts 9 and 21 and an outer periphery of the boss 38 at regular intervals. And a large number (12 in the illustrated example) of arms 39 curved in an arc shape so as to recede backward in the rotation direction A of the shafts 9 and 21.

As shown in FIGS. 1, 2 and 4, in front of the screen 4, a scraper 40 whose front end can penetrate into the sand is connected to the front end of the screen 4 at a variable scooping angle. ing. That is, a horizontal pin 42 is rotatably inserted into a block-shaped bracket 41 attached to the front end of both side frames 5 a of the screen frame 5 in the screen 4, and the inner ends of both pins 42 are The lower end of the rear end of the scraper 40 is fixed, while the base of the lever 43 is fixed to both middle portions on the lower surface of the scraper 40. The scraper 40 is supported by a scraper hydraulic cylinder 44 interposed between the end of each lever 43 and the front end of each side frame 5a, and rotates around the pin 42 by its operation. , 2 against the horizontal plane
The scooping angle is variable within a range of 0 to 60 °.

As shown in FIGS. 1 and 2, in front of the scraper 40, there is provided a sand scraping device 45 for scraping sand mixed with garbage backward. That is, as described above, the inner ends of both pins 42 attached to the front ends of both side frames 5a of the screen frame 5 on the screen 4 via the brackets 41 cover the scraper 40 and the front end of the screen 4 as described above. The rotor cover 46 opened downward and rearward is
The rotor cover 46 is rotatably mounted via lower rear portions of both side walls, and the rotor cover 46 is a hydraulic cylinder for a sand scraping device interposed between the both side walls and the upper front end of each side frame 5a. It is supported by 47 and rotates about the pin 42 by its operation, and the front side is provided so as to be able to move up and down. The rotor cover 46 constitutes a part of the sand scraping device 45. Inside the rotor cover 46, a horizontal shaft 48 rotatably supported on both side walls is provided. A rotor 51 comprising a large number of disk-shaped rotor plates 49 attached at intervals and a scraping plate 50 formed of a steel plate or hard rubber and radially incorporated around each rotor plate 49 is housed therein. The shaft 48 of the rotor 51 is linked to a hydraulic motor 52 attached to the outside of one side wall of the rotor cover 46.

On the other hand, at the rear end of the screen 4, FIGS.
As shown in FIG. 3, a dust box 53 for accommodating on-screen products (garbage) of the screen 4 is arranged in tandem with the dust box 53 and is provided so as to be able to move up and down and tilt. That is, the posts 5 erected on both sides of the rear part of the body frame 1
A base end of a bending arm 55 which extends rearward and is provided so as to be able to extend or bend by a deforming action of a parallelogram is pivotally attached to the upper end of each of the four bending arms. 55 is a dust box elevating hydraulic cylinder 56 interposed between each base end side and the base of the post 54.
, And is provided so as to be able to move up and down while extending or bending the distal end portion by its operation. Then, a dust box 53 is provided at a bent portion of the both bent arms 55,
The dust box 53 is rotatably mounted via a pin 57 implanted at the center of both side walls.
7 and the bent arm 55
The dust box tilting hydraulic cylinder 59 interposed between the pin 57 and the pin 57 rotates about the pin 57,
It is provided to be tiltable.

In order to clean the sand with the self-propelled sand cleaner having the above-described structure, first, the tension adjusting bolt 27 is loosened and the mesh adjusting bolt is adjusted to obtain a sieve mesh suitable for the wet and dry condition of the sand. 15 in the front-rear direction, and the boss 38 in the sieve forming member 37 of the adjacent shafts 9 and 21.
After the sieve mesh formed in the longitudinal direction of the sieve frame 5 formed between the arm 39 and the arm 39 has a required size, the tension adjusting bolt 27 is tightened to make the tension of the endless belt 34 appropriate. Next, the engine is started by operating the driver's seat and the hydraulic unit is driven. Then, the screen hydraulic cylinder is operated to set the screen 4 to a required inclination angle suitable for the dry and wet state of the sand, and the scraper hydraulic cylinder 44 is operated to adjust the scraper 40 to the cleaning depth of the sand. Is set, the height of the rotor 51 of the sand scraping device 45 is set to a required position by operating the hydraulic cylinder 47 for the sand scraping device, and the dust box 53 is moved to the state shown in FIG. After that, the hydraulic motors 36 and 52 are driven, and the crawler 2 is driven to run the sand cleaner. As the sandy cleaner travels, the sand of a required thickness mixed with garbage in the sandy ground is scraped backward by the scraping plate 50 of the rotor 51 in the sand scraping device 45 to be released and scraped by the scraper 4.
After being fed onto the screen 4, it is supplied onto the screen 4 by scooping up the scraper 40. Then, the sand mixed with the garbage supplied on the screen 4 is sieved while being moved backward by the rotation of the sieve forming member 37, and the sand smaller than the sieve falls into the sand, while the sand smaller than the sieve is larger than the sieve. After the garbage is transferred rearward, it is stored in the dust box 53. When sifting sand mixed with garbage (object to be processed) by the screen 4, the string-like garbage can easily escape from the arm 39, so that the entanglement can be prevented,
The fine sieves can be separated and collected by making the sieve smaller, and the working efficiency can be improved. Further, since the arm 39 is easily bent when the foreign matter is caught, it is possible to prevent the sieve forming member 37 from being damaged and to have excellent durability. Further, since the openings of the sieves are sized to match the dry and wet condition of the sandy ground, it is possible to prevent the sieves from being clogged with wet sand. Next, the dust box 53
When the garbage stored in the cradle is full, the traveling by the crawler 2 is stopped, and the hydraulic motor 36,
After the driving of the dust box 52 is also stopped, the dust box elevating hydraulic cylinder 56 is extended and the dust box 53 is raised, and then the dust box tilting hydraulic cylinder 59 is extended and the dust box 53 is tilted to dump dust inside. Then, the dust box 53 is returned to the carrier such as a truck, and then the hydraulic cylinders 56 and 59 are contracted to return the dust box 53.

In the above-described embodiment, the self-propelled sand-based cleaner using the crawler 2 has been described. However, the present invention is not limited to this. Of course, it may be good. Further, the link mechanism 13 as a spacing means of each axis in the screen is paired with a link member 14a having a substantially triangular plate shape, and
A substantially rectangular plate-shaped link member 14b having the same length as the longest side thereof, and one link member 1;
4a, the middle of the longest edge and the other link member 14
a number of segments 14 pivotally connected in the middle of b
Not limited to the case where a plurality of parallelograms are formed by linking a pair of substantially rectangular plate-shaped link members in the middle between them to form a segment, and connecting the many segments around both ends by a pair. May be provided so as to form a straight line. In this case, the shaft support at the end of the shaft is performed at the pivot portion of the segment.

[0016]

As described above, according to the sandy land cleaner of the present invention, when sifting sand (object to be treated) mixed with garbage, string-like garbage can easily escape from the arm. The entanglement can be prevented, and fine sieves can be separated and collected by reducing the sieve mesh, and work efficiency can be improved. Further, since the arm is easily bent when foreign matter is caught, breakage of the sieve forming member can be prevented and the durability can be improved. Furthermore, since the sand mixed with garbage is dislodged while being scraped backward by the scraper plate of the rotor in the sand scraper, the scooping by the scraper is not affected by the dry and wet state of the object to be treated, It can be performed well with the required thickness. Furthermore, since the mesh openings in the longitudinal direction of the sieve frame can be changed, clogging can be prevented by setting the openings corresponding to the wet and dry conditions of the sand, regardless of whether the sand is wet or dry. Good sieving can be performed.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing an example of an embodiment of a self-propelled sandy ground cleaner according to the present invention.

FIG. 2 is a plan view schematically showing an example of an embodiment of a self-propelled sandy ground cleaner according to the present invention.

FIG. 3 is a rear view schematically showing an example of an embodiment of a self-propelled sandy land cleaner according to the present invention.

FIG. 4 is an enlarged view of a main part in FIG.

FIG. 5 is an enlarged view of another main part in FIG. 1;

FIG. 6 is an enlarged view of a main part in FIG. 2;

7 is a sectional view taken along line VII-VII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame (car chassis) 2 Crawler 4 Screen 5 Sieve frame 5a Side frame 6 Pin 7 Screen hydraulic cylinder 9 Shaft 10 Pulley 13 Link mechanism 14 Segment 14a Link member 14b Link member 15 Aperture adjustment bolt 21 Shaft 22 Pulley 24 Intermediate pulley 27 Tension adjusting bolt 28 Tension pulley 31 Direction conversion pulley 34 Endless belt 36 Hydraulic motor 37 Sieve forming member 39 Arm 40 Scraper 44 Hydraulic cylinder for scraper 45 Sand scraper 50 Scraper 51 Rotor 52 Hydraulic motor 53 Dust box 55 Bend Arm 56 Dust box lifting hydraulic cylinder 59 Dust box tilting hydraulic cylinder A Rotation direction

Claims (6)

[Claims] 1. A star having a body frame which is self-propelled or towed by a towing vehicle, and has a plurality of arms which are disposed at a lower portion of the body frame at a forward and downward inclination and are curved so as to retreat backward in the rotational direction. By incorporating a large number of sieve forming members made of soft material in a mold and rotating a large number of shafts variably provided so that the intervals between adjacent ones are equal, the sand mixed with garbage can be removed. A screen that is sieved while moving backward, and a scraper that is arranged in line with the front end of the screen and that can infiltrate the front end into sandy ground,
A sand scraping device that scrapes sand mixed with garbage backward by rotating a rotor that is arranged in front of the scraper and incorporates a large number of scraping plates radially around the periphery, and a rear end of the screen And a dust box arranged in series and containing a screen sieve product. 2. A variable distance means for each axis of the screen, wherein a pair of link members are pivotally connected in an X-shape, and a number of segments which pivotally support the ends of the axes are connected in a pair. The sandy land cleaner according to claim 1, wherein the parallelogram is a link mechanism connected so as to form a straight line. 3. The sand cleaner according to claim 1, wherein the screen has a variable inclination angle. 4. The sand ground cleaner according to claim 1, wherein the scraper has a variable scooping angle. 5. The sand-based cleaner according to claim 1, wherein the sand scraping device is movable up and down. 6. The dust box according to claim 1, wherein the dust box is vertically movable and tiltable.
The sand cleaner described.