JP5018717B2 - Beach cleaner - Google Patents

Description

  The present invention relates to a beach cleaner that collects various kinds of garbage scattered on a sandy beach such as a beach.

Various types of garbage such as fishing net fragments, ropes, vinyl strings, paper scraps, wood chips, empty cans, bottles, PET bottles and caps, and cigarette butts are scattered on the beaches of beaches and the like. As a beach cleaner for collecting these dusts, a frame is formed by a plurality of vertical members extending along the running direction and a plurality of horizontal members extending in the width direction substantially orthogonal to these members, and sandy soil is formed at the four corners of the frame. By placing a ski member that touches the ground, attaching a scraper to the front part of the frame, providing a net on the rear part of the frame, and running on the sand by being pulled by the towing vehicle with the scraper biting into the sand There are some which scrape up relatively small dust together with sand so that they can be collected by a net (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-356827

However, since the conventional beach cleaner is in contact with the ground via the ski member, there is little vibration applied to the mesh body, and sand scraped up by the mesh body may be accumulated without being screened off. In this case, the worker has performed a special driving operation such as meandering the tow vehicle to remove the sand or stopped the tow vehicle as appropriate to remove the sand accumulated in the net. .
Therefore, the object of the present invention is to eliminate the problems of the above-described conventional technology, and to satisfactorily screen the sand that has been scraped up to the net without requiring special traveling operation or sand removal work. To provide a beach cleaner.

In order to solve the above problems, a beach cleaner according to the present invention has a frame formed by vertical members and horizontal members, and is attached to the front portion of the frame and is grounded on a sand surface, and is pulled by a towing vehicle. And a separator that separates and scrapes dust from the sand at the front lower part of the frame, and collects the dust scraped up by the separator on the frame behind the separator. In a beach cleaner provided with a net body, a wheel is attached to the rear of the separator of the frame, and a rotation shaft of the wheel is provided at a position eccentric with respect to the wheel center.
According to the above configuration, the rotating shaft swings up and down with the rotation of the wheel, so that the vertical vibration is applied to the rear portion of the frame and the sand that has entered the mesh body is screened out so that it does not accumulate.

The present invention is characterized in that, in the above-described beach cleaner, the wheels are provided in a pair of left and right and are connected to each other by an axle connecting the wheel centers.
According to the above configuration, since the left and right wheels rotate in synchronization with the upper and lower wheels, the left and right wheels of the mesh body vibrate up and down at the same cycle as compared with the case where the left and right wheels rotate independently. The sand that has penetrated into the water can be screened out well so that it does not accumulate. In addition to this, it is possible to suppress the rolling of the beach cleaner, stably ground the separator, and effectively remove dust compared to the case where the left and right wheels rotate independently.

The present invention is characterized in that, in the above-described beach cleaner, the wheel is provided such that an attachment height from a sand surface to the frame can be adjusted.
According to the above configuration, since the mounting height of the frame can be adjusted, it is possible to effectively remove dust by adjusting the amount of subsidence of the separator into the sand according to the condition of the sand.

  According to the present invention, the wheel is attached to the rear of the frame separator, and the rotation shaft of the wheel is provided at a position eccentric with respect to the center of the wheel, so that the rotation shaft swings up and down as the wheel rotates. Therefore, vertical vibrations are applied to the rear part of the frame, and the sand that has entered the mesh body is screened out so that it does not accumulate.

  In addition, by connecting the left and right wheels together with the axle connecting the wheel centers, the left and right wheels rotate in synchronization with the top and bottom, so the left and right wheels of the mesh body can be compared with the case where the left and right wheels rotate independently. It can vibrate up and down more greatly at the same period, and can effectively remove the sand that has infiltrated on the net body so that it does not accumulate. In addition, compared with the case where the left and right wheels rotate independently, the rolling of the beach cleaner can be suppressed, the separator can be stably grounded, and the dust can be effectively removed. Can be reduced.

  Furthermore, since the mounting height of the frame can be adjusted by adjusting the mounting height from the sand surface to the frame, the amount of sinking of the separator into the sand according to the condition of the sand It is possible to effectively remove dust and to reduce the burden on the operator.

Preferred embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view when a beach cleaner or the like according to the present embodiment is loaded on a trailer and transported.
A vehicle 1 shown in FIG. 1 includes left and right front wheels 2 and rear wheels 3 that are relatively large-diameter low-pressure balloon tires in front of and behind a vehicle body that is small and light. It is configured as a so-called ATV (All Terrain Vehicle) with improved running performance on rough terrain. The vehicle body frame 4 of the vehicle 1 forms a box structure that is long in the front-rear direction in the center portion in the vehicle width direction.

The engine 5 is, for example, a water-cooled single cylinder engine, and outputs the rotational power of the crankshaft to the front and rear propeller shafts 6a and 6b via a gear meshing type transmission. The rotational power output to the front and rear propeller shafts 6a and 6b is output to the left and right front wheels 2 or the rear wheel 3 via the front and rear speed reduction devices 7a and 7b, respectively.
Here, the vehicle 1 is a so-called semi-automatic vehicle in which the gear ratio of the transmission can be electrically changed. For example, the gear ratio can be changed only by operating a change button or the like without performing clutch operation through a centrifugal clutch. Is possible. Such a vehicle 1 is suitable for traveling with a large traveling load and traveling at a constant speed as compared with a vehicle having a belt-type transmission.

  The left and right front wheels 2 are suspended from the front portion of the vehicle body frame 4 via an independent suspension type front suspension 8a, and the left and right rear wheels 3 are suspended from the rear portion of the vehicle body frame 4 via, for example, a swing arm type rear suspension 8b. The A trailer hitch 11 for pulling the trailer 13 is provided at the rear end of the swing arm 9 of the rear suspension 8b. In the figure, reference numeral 12a denotes a front carrier supported at the front part of the vehicle body frame 4, and reference numeral 12b denotes a rear carrier supported at the rear part of the vehicle body frame 4.

The vehicle 1 can pull a trailer 13 that transports first and second beach cleaners 20 and 50 and a garbage collection station 40 described later.
The trailer 13 has, for example, a pair of left and right wheels 15 on both lower sides of the body frame 14, and has a shallow box-shaped stacking portion 16 that opens upward and downward on the body frame 14, and the body frame 14 The traction arm 17 is extended from the front lower side of the front toward the front. A hitch coupler 17 a corresponding to the trailer hitch 11 is provided at the front end portion of the pulling arm 17.

  The vehicle body frame 14 has a shape in a top view, and the stacking portion 16 is provided so as to substantially overlap the body frame 14 in a top view. The stacking portion 16 is formed by mounting plate members on a frame-like frame to form front and rear, left and right wall portions and a bottom wall portion. A wheel house 16 a corresponding to the left and right wheels 15 is formed to bulge upward on the left and right sides of the bottom wall portion of the stacking portion 16.

  A part of each divided body constituting the garbage collection station 40 is accommodated in the loading unit 16, and the first and second beach cleaners 20 and 50 and a part of each of the divided bodies are accommodated on the loading unit 16. Is placed. When the trailer 13 is pulled by the vehicle 1 in such a loaded state, the beach cleaners 20 and 50 and the garbage collection station 40 can be transported to a predetermined work place. Hereinafter, the portions forming the left and right upper edge portions of the loading portion 16 in the frame are the left and right side portions 16b and 16c, respectively.

The beach cleaners 20 and 50 and the garbage collection station 40 shown in FIG. 1 show the loaded state on the trailer 13, and the beach cleaners 20 and 50 and the garbage collection station 40 shown in FIG. The usage state is shown above. Further, as shown in FIG. 1, the state in which the trailer 13 grounds both the wheels 15 and keeps the stacking portion 16 at a predetermined height and approximately horizontal may be referred to as a towing state of the trailer 13 in the following description.
In addition, a line GL in the figure indicates the ground (sandy ground), a line CL (FIGS. 2 and 5) indicates the vehicle 1 and the respective beach cleaners 20 and 50 pulled by the vehicle 1 and a dust collection station 40 (hereinafter referred to as the following). The arrow FR indicates the front in the traveling direction (front-rear direction) of the vehicle, the arrow UP indicates the upper direction in the vertical direction of the vehicle, and the arrow LH (FIGS. 2, 5 and 5). FIG. 7) shows the left side in the left-right direction of the vehicle or the like.

  Each of the beach cleaners 20 and 50 is pulled by the vehicle 1 and travels on a sandy area (sandy beach) such as a coast, and collects various kinds of garbage scattered on the sandy area. The garbage collected by the beach cleaners 20 and 50 is collected together at a garbage collection station 40 installed at a predetermined location on the sand. Each of the beach cleaners 20 and 50 and the dust collection station 40 are appropriately assembled by using a plurality of types of steel materials such as stainless steel using a joining means such as welding. Each beach cleaner 20, 50 may be pulled by a tractor.

FIG. 2 is a plan view showing a state where the first beach cleaner 20 is lifted up to the garbage collection station 40, and FIG. 3 is a left side view showing a state where the first beach cleaner 20 is lifted up to the garbage collection station 40. FIG.
As shown in FIG. 2, the first beach cleaner 20 includes a plurality of (for example, fifteen) vertical members 21 extending along the traveling direction and arranged in the width direction (left and right direction) at substantially equal intervals to form a snowboard-like frame. 22 and a plurality of sand pins 23 protruding downward are attached to each vertical member 21 in a detachable manner. The first beach cleaner 20 has a symmetrical configuration.

  The vertical member 21 is formed, for example, by arranging a circular steel pipe (or a square steel pipe) along the front-rear direction, and bending the front-rear end part obliquely upward forward or rearward. A plurality of the vertical members 21 are juxtaposed side by side so as to overlap in a side view, and the front end of the vertical member 21 is joined to a front horizontal member 24a made of, for example, a square steel pipe extending in the left-right direction obliquely from below and rear, and the rear end Are connected to the rear lateral member 24b made of, for example, a square steel pipe extending in the left-right direction, obliquely from the lower front side.

  The front and rear horizontal members 24a and 24b extend further to the left and right outside of the outermost vertical member 21, and between the left and right ends of the front and rear horizontal members 24a and 24b, side portions that are curved in the same manner as the vertical member 21. A vertical member 21a is provided.

  The frame 22 composed of these members has a horizontally long rectangular shape in a top view, and the left and right width is between the left and right widths of the vehicle 1 (see FIG. 1) and the left and right side structures 41R and 41L of the dust collection station 40 described later. It is made wider than the left and right width. When the first beach cleaner 20 pulled by the vehicle 1 enters between the left and right side structures 41R and 41L, the left and right sides of the frame 22 ride on the left and right side structures 41R and 41L. Thus, the first beach cleaner 20 is lifted up to a predetermined height. The left-right width between the left and right side structures 41R and 41L is larger than the left and right width of the vehicle 1, and the vehicle 1 can pass between the left and right side structures 41R and 41L.

The sand pin 23 can be attached to the front part, front-rear intermediate part, and rear part of each vertical member 21. That is, a plurality of sand pins 23 can be arranged in three rows in the front and rear direction. As a result, running resistance during low-speed running can be suppressed, and the running resistance can be further reduced by reducing the number of sand pins 23 according to the hardness of the sand. The protruding length of each sand pin 23 from the lower surface of the frame 22 is set to a maximum of 100 mm in order to suppress the influence on the ecosystem in the sand.
As the first beach cleaner 20 travels through the sand, scattered and relatively large garbage (rope, net, driftwood, etc.) is scraped and collected by being caught or entangled with each sand pin 23.

  A towing portion 37 for towing the first beach cleaner 20 with the vehicle 1 is provided, for example, in front of the third vertical member 21 from the left and right outer ends of the frame 22. The pulling portion 37 is a thick plate that is orthogonal to the left-right direction, and a connecting hole (not shown) is formed at the front end thereof. The other end of the traction rod 38 having one end connected to the trailer hitch 11 of the vehicle 1 is connected to the connection hole, and the first beach cleaner 20 is pulled to the vehicle 1 via the traction rod 38.

  In addition, by providing a plurality of connecting holes at the top and bottom, it is possible to set an optimum traction position according to the sinking of the first beach cleaner 20 into the sand or the like depending on which of the other ends of the traction rod 38 is connected to which connection hole. It is. The tow rod 38 extends in a V shape or a Y shape in top view from one end side connected to the trailer hitch 11 toward the left and right pulling portion 37, and corresponds to the trailer hitch 11 on the one end side. The hitch coupler 17a is provided.

  As shown in FIG. 3, when the first beach cleaner 20 is lifted up as described above in the garbage collection station 40, the sand pins 23 are sufficiently separated from the sand ground, and the sand pins 23 are scraped up. Garbage can be dropped on the sand, and the garbage can be collected together.

As shown in FIGS. 2 and 3, the garbage collection station 40 is formed by integrally connecting the left and right side structures 41R and 41L with a pair of front and rear connection members 42, for example, each side structure 41R. , 41L except for the structure of the front and rear intermediate part, and a symmetrical structure.
The left and right side structures 41R and 41L are provided with a guide member 44 made of, for example, a circular steel pipe having a gentle mountain shape in a side view on a grounding member 43 made of, for example, a circular steel pipe along the front-rear direction. By connecting the front and rear end portions of each other integrally, a trapezoidal shape is formed.

  A foot member 45 is attached to the front and rear ends of the left and right grounding members 43 so as to be attachable and detachable so as to be positioned on the left and right outer sides as viewed from above. Each foot member 45 is grounded on the sand surface together with each grounding member 43, whereby the dust collection station 40 is stably installed with its grounding area expanded.

  The connecting member 42 is made of, for example, a circular steel pipe extending in the left-right direction, and the end of the connecting member 42 is detachably inserted into a connecting pipe 46 provided below the front part or the rear part of the grounding member 43. The side structures 41R and 41L are integrally connected. That is, since the garbage collection station 40 is relatively large, it can be divided into a plurality of divided bodies (left and right side structure 41R, 41L and front / rear connecting member 42), and the left and right side structure 41R, 41L is further divided. It can be divided into three divisions in the front and rear. Specifically, the left side structure 41L can be divided into a front divided body 41a, a left intermediate divided body 41c, and a rear divided body 41b, and the right side structure 41R includes the front divided body 41a and the right intermediate divided body. It can be divided into 41d and the rear divided body 41b.

  The connecting pipes 46 before and after the ground member 43 are made of a relatively short circular steel pipe along the left-right direction, and are integrally coupled to the upper outer periphery thereof so as to align with the notch below the ground member 43. That is, the connecting pipe 46 protrudes downward from the lower surface of the grounding member 43, and when the garbage collection station 40 is installed on the sand surface, the movement of the garbage collection station 40 is suppressed by biting into the sand.

  In an assembled state in which a predetermined amount of the end of the connecting member 42 is inserted into the connecting pipe 46 (for example, a state where the outer ends of the connecting pipe 46 and the connecting member 42 are matched), the connecting pipe 46 and the connecting member 42 are formed. The upper and lower through holes (not shown) overlap, for example, on the left and right outer sides of the grounding member 43, and by inserting a predetermined locking pin 47 into each of the upper and lower through holes, the connecting member 42 and the grounding member 43 are inserted and removed in the assembled state. Linked impossible.

  The locking pin 47 penetrates the connecting member 42 and the connecting pipe 46 and protrudes further downward and is inserted into the sand by a predetermined amount. That is, the locking pin 47 suppresses movement from a predetermined position in the installed state of the dust collection station 40. Then, by removing the locking pin 47 and extracting the connecting member 42 from the connecting pipe 46, the dust collection station 40 can be divided into the left and right side structures 41R and 41L and the front and rear connecting members 42.

  The front divided body 41a in the left and right side structures 41R and 41L includes a front inclined portion 44a of the guide member 44, a front horizontal portion 43a, a front inclined portion 44a and a front horizontal portion positioned below the front inclined portion 44a of the ground member 43. A substantially vertical front support member 48a extending between the rear ends of 43a is mainly used. Further, the rear divided body 41b is disposed between the rear inclined portion 44b of the guide member 44, the rear horizontal portion 43b positioned below the rear inclined portion 44b of the grounding member 43, the rear inclined portion 44b, and the front end portions of the rear horizontal portion 43b. The main supporting member 48b is a substantially vertical rear support member 48b. In this embodiment, the front and rear divided bodies 41a and 41b have the same shape, and it is also possible to arrange them in the reverse direction.

  The left intermediate divided body 41c in this embodiment is constituted by the trailer 13 in the towed state. Specifically, the right side portion 16 c of the stacking portion 16 in the trailer 13 in the towed state has a substantially horizontal single rod shape, and the right side portion 16 c constitutes a substantially horizontal upper side portion 44 c in the guide member 44. In the towed state of the trailer 13, the height of the right side 16c, which is the upper right edge of the loading unit 16, is the upper side 44c of the guide member 44 in the installed state (use state) of the dust collection station 40 on the sand. The height is substantially the same. The trailer 13 can be self-supported in the towing state by a support leg (not shown).

A rear end portion of the front inclined portion 44a of the front divided body 41a can be attached to and detached from the front end portion of the right side portion 16c, and a rear inclined portion 44b of the rear divided body 41b is attached to the rear end portion of the right side portion 16c. The front end can be attached and detached. The front and rear end portions of the right side portion 16c and the front and rear end portions of the front and rear inclined portions 44a and 44b are connected so as not to be inserted / removed by applying a predetermined stopper, and if the stopper is released, the right side portion 16c. And the front and rear inclined portions 44a and 44b can be divided.
In this way, the right side portion 16c of the trailer 13 constitutes a part of the left side structure 41L, so that the trailer 13 is immediately adjacent to the left in the installed state of the garbage collection station 40.

  On the other hand, the right intermediate divided body 41d includes a substantially horizontal upper side portion 44c of the guide member 44, an intermediate horizontal portion 43c located below the upper side portion 44c of the grounding member 43, and a space between the upper side portion 44c and the intermediate horizontal portion 43c. A plurality of substantially vertical (a pair in this embodiment) intermediate support members 48c extending in a side view are ladder-shaped, and the front end portion of the upper side portion 44c is provided with a front inclined portion 44a of the front divided body 41a. The rear end portion can be attached and detached, and the front end portion of the rear inclined portion 44b of the rear divided body 41b can be attached and detached to the rear end portion of the upper side portion 44c. In addition, a rear end portion of the front horizontal portion 43a of the front divided body 41a can be attached to and detached from a front end portion of the intermediate horizontal portion 43c, and a rear horizontal portion of the rear divided body 41b is attached to a rear end portion of the intermediate horizontal portion 43c. The front end of the portion 43b can be attached and detached.

  The front and rear end portions of the upper side portion 44c and the front and rear end portions of the front and rear inclined portions 44a and 44b are connected so as to be able to be inserted and removed by applying a predetermined retaining, and the upper side portion 44c and the front and rear ends when the retaining is released. The inclined portions 44a and 44b can be divided. Similarly, the front and rear end portions of the intermediate horizontal portion 43c and the front and rear end portions of the front and rear horizontal portions 43a and 43b are connected so as to be able to be inserted and removed by providing a predetermined retaining, and if the retaining is released, The horizontal portion 43c and the front and rear horizontal portions 43a and 43b can be divided. A member corresponding to the intermediate horizontal portion 43c may be provided on the left side structure 41L.

  By the way, the substantially horizontal left side portion 16b of the stacking portion 16 of the trailer 13 can be used as the upper side portion 44c of the guide member 44 similarly to the right side portion 16c. The left-right width between the left and right side portions 16b, 16c is substantially the same as the left-right width between the left and right side portion structures 41R, 41L, and the rear end portions of the left and right side portions 16b, 16c of the stacking portion 16 By connecting the front end portion of the rear inclined portion 44b of the rear divided body 41b to each other, it is possible to reproduce the same configuration as the latter half portion in the installed state of the dust collection station 40. At this time, the left and right rear divided bodies 41b may be connected by the connecting member 42.

  Accordingly, the first beach cleaner 20 (and the second beach cleaner 50) loaded on the loading unit 16 can be lowered onto the sand surface along the upper side portion 44c and the rear inclined portion 44b of the left and right guide members 44. In addition, the first beach cleaner 20 (and the second beach cleaner 50) on the sand can be lifted onto the stacking portion 16 along the rear inclined portion 44b and the upper side portion 44c of the left and right guide members 44. Hereinafter, the state in which the rear divided body 41b is connected to the left and right side portions 16b and 16c as described above may be referred to as a loading / unloading work state of the trailer 13.

FIG. 4 is a side view showing a vehicle towing state of the second beach cleaner 50, and FIG. 5 is a plan view of the second beach cleaner 50.
The second beach cleaner 50 includes a plurality of (for example, three) vertical members 51 that extend along the vehicle traveling direction, and front and rear horizontal members 52a and 52b that extend substantially along the width direction (left and right direction) orthogonal to these. A frame-shaped frame 53 is mainly formed, and a keel 54 (separator) and a scraper (separator) 55 which will be described later are provided at the front of the frame 53, and a net 56 which will be described later is provided at the rear. The second beach cleaner 50 also has a symmetrical configuration.

  The vertical member 51 is formed by, for example, arranging a circular steel pipe along the front-rear direction and bending the front-rear intermediate part in a gentle crank shape in a side view, thereby displacing the rear part slightly upward with respect to the front part. Moreover, in the front part of the vertical member 51, the front-rear center part is gently bent, so that the front half part of the front part is provided to be inclined slightly upward. Hereinafter, the front first half of the vertical member 51 is referred to as a front inclined portion 57. On the other hand, the rear end portion of the vertical member 51 is provided curved upward. The vertical member 51 may be made of a square steel pipe.

  A plurality of the vertical members 51 are juxtaposed side by side so as to overlap in a side view, and the front ends of the vertical members 51 are abutted from the rear to a front horizontal member 52a made of, for example, a square steel pipe extending in the left-right direction. The rear transverse member 52b made of, for example, a circular steel pipe extending along the direction is abutted and coupled from below. The frame 53 mainly including the vertical members 51 and the horizontal members 52a and 52b is formed in a substantially square shape in a top view. The left and right width of the frame 53 is narrower than the left and right width between the left and right side structures 41R and 41L of the dust collection station 40.

  Between each of the vertical members 51 at the center of the left and right and the vertical members 51 on both the left and right sides, a plurality of (for example, three) scraper frames 58 that are inclined so as to overlap with the front inclined portions 57 in a side view. Established. The scraper frame 58 is formed of a circular steel pipe (or a square steel pipe) having the same diameter as that of the vertical member 51, and the front end of the scraper frame 58 is abutted against the front horizontal member 52a from the rear, and the rear end is not connected to any member. The free end. The scraper frames 58 and the left and right central vertical members 51 are arranged at substantially equal intervals, whereas the left and right outermost scraper frames 58 and the left and right vertical members 51 are arranged with a small interval therebetween.

The front inclined portion 57 of each vertical member 51 and each scraper frame 58 separate sand and relatively small garbage (beverage containers, paper waste, cigarette butts, etc.) from the sand when the second beach cleaner 50 is towed. A keel 54 and a scraper 55 as a separator to be scraped up are attached.
The keel 54 is detachably attached to the rear portion of the front inclined portion 57 of the vertical member 51 and the rear portion of each scraper frame 58, and is curved so as to align with the lower outer surface of the front inclined portion 57 or the scraper frame 58. The plate-like member 61 has a U-shape that opens upward in a side view, and both sides of the plate-like member 62 penetrate the plate-like member 61, and the plate-like shape that is substantially perpendicular to the left-right direction. A keel body 63 extending downward from the lower edge of the member 61 is provided.

  A plurality of scraper support holes 66 are formed at the rear end of the keel 54 (the keel body 63), and the scraper 55 is inserted and supported in each of the scraper support holes 66. The scraper 55 is, for example, a rod having a circular cross section along the left-right direction, and is supported by the scrapers 55 in a state of passing through the upper and lower scraper support holes 66 across the keels 54. The scraper 55 can be selectively supported in accordance with the situation of sandy beaches and garbage, and a plurality of scrapers can be supported. At both ends of the scraper 55, a predetermined locking pin is inserted to prevent the scraper 55 from falling off. The cross-sectional shape of the scraper 55 is not limited to a circular shape, and may be, for example, a semicircular shape having a front lowering surface. Further, the number of scrapers 55 may be one or three or more, and they may be arranged side by side or diagonally instead of vertically.

  Each keel 54 and scraper 55 is set so as to sink in an appropriate amount in the sand, and when the second beach cleaner 50 runs in this state, each keel 54 scrapes sand and garbage and each scraper 55 scrapes them. Thus, the sand and dust scraped up into the net 56 at the rear of the frame 53 are thrown in.

For example, a tow portion (towed portion) 67 for towing the second beach cleaner 50 with the vehicle 1 is provided in front of the second scraper frame 58 from the left and right outer ends of the frame 53. The pulling portion 67 is a thick plate that is orthogonal to the left-right direction, and is formed with a plurality of (for example, four) connecting holes 67a arranged vertically. One of these connection holes 67a is connected to the other end of the traction rod 38, one end of which is connected to the trailer hitch 11 of the vehicle 1, and the second beach cleaner 50 is connected to the vehicle 1 via the traction rod 38. Towed by.
At this time, it is possible to set an optimum traction position according to the ground height of the second beach cleaner 50 depending on which of the connection holes 67a the other end of the traction rod 38 is connected to. The left-right distance between the left and right traction parts 67 is substantially the same as the left-right distance between the left and right traction parts 37.

  A front ski support pipe 72 that supports the front ski legs 71 is provided in front of the left and right outermost scraper frame 58 in the frame 53. The front ski support pipe 72 is made of, for example, a square steel pipe that vertically penetrates the front lateral member 52a, and the leg member 73 made of the same square steel pipe in the front ski leg 71 can be inserted and supported. The front ski leg 71 sets the ground height (height from the sand surface) of the front portion of the second beach cleaner 50 to a predetermined height and enhances the sliding performance with respect to the sand, and the front portion of the front ski leg 71 curves upward. A leg member 73 is erected on a front ski board (ski member) 74 having a width.

  The front ski support pipe 72 is formed with left and right through holes 72a, and a plurality of (for example, four) left and right through holes 73a corresponding to the left and right through holes 72a are formed vertically on the leg member 73. Is overlapped with the left and right through holes 72a of the front ski support pipe 72, and a predetermined locking pin or the like is inserted into these to determine the height of the front portion of the frame 53 with respect to the front ski leg 71. The ground height in front of the cleaner 50 is set to a predetermined height. That is, the ground height of the front portion of the second beach cleaner 50 can be adjusted by inserting the locking pin or the like into any of the left and right through holes 73a of the leg member 73, so that the keel 54 and the scraper 55 can enter the sand. The amount of subsidence can be adjusted. The left and right width between the outer ends of the front skis 74 of the left and right front ski legs 71 is substantially the same as the left and right width of the frame 53.

  Rear legs 76 are supported on both sides of the rear portion of the rear transverse member 52b. The rear leg 76 includes an extension frame 75 extending rearward from both sides of the rear side of the rear lateral member 52b, a rear leg support pipe 77 provided at the rear end of the extension frame 75, and a leg member inserted through the rear leg support pipe 77. 78, an arm member 100 having an arm 100a extending rearward from the upper portion of the leg member 78, and an arm 100b extending from the rear end portion of the arm 100a to the vehicle inner side, and the left and right sides where the wheel center C is coupled by the axle 108. The wheel 106 and the rotating shaft 104 provided at a position eccentric with respect to the wheel center C are inserted into the arm 100b. The rear leg 76 sets the ground height (height from the sand surface) of the rear portion of the second beach cleaner 50 to a predetermined height and vibrates the rear portion of the frame 53 up and down.

  Front and rear lift arms 81a and 81b are provided on the left and right outer sides of the front and rear sides of the frame 53 so as to project from the outer end toward the left and right sides. Each of the lift arms 81a and 81b is a frame-shaped frame having a horizontally long shape when viewed from the top, for example. The left and right middle portions are substantially horizontal, the left and right inner portions are obliquely inward and the left and right outer portions are obliquely downward. Each bend is formed outward. The left and right width between the outer ends of the lift arms 81a and 81b is wider than the left and right width between the left and right side structures 41R and 41L of the dust collection station 40 (in other words, the frame 22 of the first beach cleaner 20). When the second beach cleaner 50 enters between the left and right side structures 41R and 41L, the lift arms 81a and 81b ride on the left and right side structures 41R and 41L. Thus, the second beach cleaner 50 is lifted up by a predetermined amount.

  When the second beach cleaner 50 is lifted up at the garbage collection station 40 as described above, the net 56 at the rear of the frame 53 rises to a predetermined height, and the net 56 is rotated through the hinge 82 on the left side. By moving it, it becomes possible to easily collect the dust collected in the net 56. At this time, the trailer 13 is adjacent to the left side of the garbage collection station 40, and the garbage is directly put into the stacking portion 16 of the trailer 13.

  The rear lift arm 81b on the left side of the frame 53 is provided with a rear hinge bracket 83 that constitutes a part of a hinge 82 that rotatably supports the left side portion of the net 56. The rear hinge bracket 83 extends in the front-rear direction on the base end side of the rear lift arm 81b. On the left side of the net 56, a rear hinge pipe 85 is disposed corresponding to the rear hinge bracket 83, and the rear hinge pipe 85 is pivotally supported by the rear hinge bracket 83 via a hinge shaft 82a extending in the front-rear direction. Is done.

  Further, a frame-shaped support arm 86 having a lateral width reduced with respect to the lift arm 81b is provided slightly in front of the rear lift arm 81b. The support arm 86 has the same structure as that of the rear hinge bracket 83. A front hinge bracket 87 having a configuration is supported. A front hinge pipe 89 is disposed on the left side of the net 56 corresponding to the front hinge bracket 87, and the front hinge pipe 89 is rotatably supported by the front hinge bracket 87 via a hinge shaft 82a extending in the front-rear direction. The The hinge pipes 85 and 89 and the hinge shaft 82a are provided coaxially with each other.

  The net 56 has a box shape that opens forward and upward. For example, a net having a mesh of a predetermined size is attached to a frame-shaped frame mainly composed of a steel pipe. The net 56 is provided so as to have substantially the same left-right width as the frame 53 in the left-right direction from a position slightly forward of the front-rear center of the frame 53 to the vicinity of the rear end of the frame 53 in the front-rear direction. Here, the front end position of the net 56 is set to 100 in the rear from the vicinity of the rear end of each keel 54, that is, from the vicinity of each scraper 55, so that the sand and dust scraped up by each keel 54 and the scraper 55 can be collected well. Separated by ~ 300 mm. More preferably, the front end position of the net 56 is spaced apart from the vicinity of the rear end of each keel 54 by about 250 mm.

  The net 56 includes a bottom wall portion 92 that has a horizontally long rectangular shape when viewed from above, a rear wall portion 93 that rises substantially vertically from the rear edge of the bottom wall portion 92, and the left and right sides of the bottom wall portion 92 from the upper side to the upper side. It has right and left side wall portions 94 that rise slightly inclined so as to be located outside. The rear wall portion 93 and the left and right side wall portions 94 are enclosures that surround the bottom wall portion 92 by opening only the front side of the bottom wall portion 92 so that the dust scraped by the keels 54 and the scraper 55 can be collected on the bottom wall portion 92. 91 is formed.

The front portion of the bottom wall portion 92 is an inclined portion 92a that is inclined slightly forwardly downward, and the portion that is behind the inclined portion 92a is an approximately horizontal horizontal portion. The horizontal portion is divided into a front horizontal portion 92b and a rear horizontal portion 92c with a horizontal member extending in the left-right direction as a boundary.
Here, a wire mesh having a mesh size of 25 mm is attached to the inclined portion 92a of the bottom wall portion 92, a wire mesh having a mesh size of 12 mm is attached to the front horizontal portion 92b, and a wire mesh having a mesh size of 8 mm is attached to the rear horizontal portion 92c. Is done.

  In this way, by setting the mesh size of the wire mesh of the bottom wall portion 92 to be rougher toward the front side, among the sand scraped up by each keel 54 and the scraper 55, sand containing relatively heavy moisture, etc. Since it does not reach the rear side of the portion 92, it is screened out satisfactorily without causing clogging or the like through the coarse wire net in the inclined portion 92 a on the front side of the bottom wall portion 92. On the other hand, the relatively light dry sand and the like reach the horizontal portion on the rear side of the bottom wall portion 92 together with the dust, and the sand and the like are screened through the middle and fine wire nets attached thereto. Good collection without dropping off the mesh. Each wire mesh can be appropriately replaced within a range of mesh sizes of 6, 8, 10, 12, 25 mm.

  The side wall portion 94 of the net 56 is formed with a rectangular side wall main body 94a that is long in the front-rear direction in the side view above the both side edges of the bottom wall portion 92, and has a trapezoidal shape in the side view above the rear side of the side wall main body 94a. A rear protrusion 94b is formed. The rear side portions of the side wall main body 94a and the rear projecting portion 94b are arranged in a straight line substantially perpendicular to the side view, and the rear wall portion 93 of the net 56 is provided with these rear side portions as side portions. The upper side part of the side wall part 94 (rear protrusion part 94b) and the upper side part of the rear wall part 93 are substantially the same height.

  Front and rear hinge plates 95a and 95b are provided in front of and behind the left side wall portion 94 of the net 56 so as to straddle the middle and lower frame members of the side wall body 94a. Each of the hinge plates 95a and 95b is a plate having a substantially square shape when viewed from the side. The hinge plates 95a and 95b are appropriately cut out so as to leave the outer edge portion and the diagonal portion, and the front and rear edge portions are bent inwardly in the left and right directions. To form a reinforcing flange. Front and rear hinge pipes 85 and 89 are integrally joined to the outer surfaces of the hinge plates 95a and 95b, respectively.

  On the front upper side of the left and right side wall portions 94 (above the front hinge plate 95a in the left side wall portion 94), a handle 96a protruding upward from its upper edge is provided. The handle 96a has a U-shape that opens downward in a side view, and is inclined so that its upper side extends along the front-rear direction and projects slightly outward from the corresponding side wall 94. Further, on the upper left and right sides of the rear wall portion 93, a handle 96b protruding upward from the upper edge thereof is provided. The handle 96b has a U-shape that opens downward when viewed from the rear, and is provided substantially vertically so that its upper side extends along the left-right direction and is positioned substantially on the same plane as the rear wall 93.

  As described above, the left side portion of the mesh body 56 is rotatably connected to the left side portion of the frame 53 via the hinge 82, and the hinge 82 is lifted so that the right side of the mesh body 56 is lifted upward. If the net body 56 is rotated through the bottom wall portion 92 so that the bottom wall portion 92 is in an upright state, dust collected in the net body 56 falls on the left side wall portion 94, and the left side wall portion 94. The dust is discharged out of the net 56 along the way.

  At this time, by providing the handles 96a and 96b at each part (at least on the side opposite to the hinge 82) of the surrounding part 91 of the net 56, it is easy to collect dust by rotating the net 56. . Further, since the hinge 82 is arranged on one short side (left side) of the horizontally long net 56, the operation unit (right handle 96a, The length up to 96b) is ensured, and the rotation of the net 56 is facilitated.

  The left side wall portion 94 of the mesh body 56 (in other words, the wall portion on the hinge 82 side of the enclosure portion 91) is a wall portion on which a plate member is mounted in order to favorably discharge the dust. The upper edge portion of the left side wall portion 94 of the net 56 is set so as to project to the left of the left side structure 41L of the dust collection station 40 in the upright state, and to the left of the dust collection station 40. Dust collected in the net 56 is directly thrown into the loading section 16 of the adjacent trailer 13 with the left side wall section 94 as a slope. Note that the right side wall portion 94 and the rear wall portion 93 of the net body 56 are, for example, net portions to which coarse metal nets are attached in order to prevent the dust thrown into the net body 56 from dropping off.

  On the left and right vertical members 51 in the frame 53, left and right front ends or rear end stoppers 97a and 97b for positioning the front and rear ends of the net 56 on both left and right sides are provided. Each stopper 97a, 97b has a substantially vertical position restricting surface that contacts the front end or the rear end of the mesh body 56, and a rotation guide surface that is inclined upwardly and continuously above it. The member 51 is detachably attached.

  The position restricting surface of the left and right front end stopper 97a is in contact with both sides of the front end of the net 56 in use (a state where the bottom wall portion 92 is substantially horizontal and is in contact with the frame 53). The rear end side of the net 56 in use is in contact with the position restricting surface 97b, so that the net 56 is positioned in the front-rear direction with respect to the frame. Further, when the mesh body 56 is rotated to return from the standing state to the use state, both the front and rear ends are guided by the guide surfaces of the stoppers 97a and 97b, and the mesh body 56 is placed at a predetermined position on the frame 53. Returned to smooth. It should be noted that the positions where the stoppers 97a and 97b are attached to the vertical member 51 can be moved back and forth, and the net 56 can be moved back and forth.

6 to 8 are left side views showing the rear part of the second beach cleaner 50, and FIG. 9 is a plan view showing the second beach cleaner 50 in FIG.
An extension frame 75 made of, for example, a square steel pipe extends rearward from both sides of the rear portion of the rear lateral member 52b, and a rear leg support pipe 77 for supporting the rear leg 76 is provided at the rear end portion of each extension frame 75. . The rear leg support pipe 77 is made of, for example, a square steel pipe that penetrates the extension frame 75 in the vertical direction, and is capable of inserting and supporting a leg member 78 that is also made of a square steel pipe.
Two left and right through holes 77a are formed in the rear leg support pipe 77, and a plurality of (for example, ten) left and right through holes 78a corresponding to the left and right through holes 77a are formed in the leg member 78 in the height direction. One of the left and right through holes 78a is overlapped with the left and right through holes 77a of the rear leg support pipe 77, and a predetermined locking pin or the like is inserted into them to determine the height of the rear portion of the frame 53 with respect to the rear legs 76. The ground clearance at the rear of the second beach cleaner 50 is set to a predetermined height.

In the second beach cleaner 50 shown in FIG. 6 (FIG. 7), the uppermost left and right through-holes 78a are overlapped with the left and right through-holes 77a of the rear leg support pipe 77, and predetermined locking pins or the like are inserted into them. The ground clearance at the rear part of the two beach cleaner 50 is set to be relatively high. In this case, since the front part of the frame 53 sinks downward, the keel 54 and the scraper 55 (see FIG. 4) provided in the front part of the frame 53 sink deeper into the ground GL.
On the other hand, the second beach cleaner 50 shown in FIG. 8 overlaps the lowest left and right through holes 78a with the left and right through holes 77a of the rear leg support pipe 77 and inserts predetermined locking pins or the like into the second beach cleaner 50. The ground clearance at the rear of the cleaner 50 is set to be relatively low. In this case, the front portion of the frame 53 is raised, and the keel 54 and the scraper 55 sink into the ground GL relatively shallowly, so that the running resistance of the second beach cleaner 50 is reduced.
As described above, the mounting height of the rear part of the second beach cleaner 50 from the ground GL can be adjusted by inserting the locking pin or the like into any of the left and right through holes 78a of the leg member 78. The amount of sinking of the scraper 55 into the sand can be adjusted. Therefore, the second beach cleaner 50 can effectively remove dust by adjusting the sinking amount of each keel 54 and the scraper 55 into the sand according to the condition of the sand. Can be reduced.

An arm member 100 is integrally provided on the upper portion of the leg member 78. The arm member 100 includes an arm 100a made of, for example, a square steel pipe that extends rearward, and an arm 100b made of, for example, a circular steel pipe that extends from the rear portion of the arm 100a to the center of the vehicle, and is substantially L-shaped in plan view. Is formed. A substantially triangular auxiliary member 103 is attached between the arm 100a and the arm 100b in plan view.
A rotating shaft 104 is inserted into the arm 100b, and the rotating shaft 104 is rotatably supported by the arm 100b via a ball bearing (not shown). A substantially disc-shaped bracket 105 is attached to the end of the rotating shaft 104 on the vehicle inner side. A wheel 106 is disposed inside the bracket 105 on the vehicle, and the wheel 106 is attached by fixing the bracket 105 and the rim 107 of the wheel 106. The wheel 106 is formed of, for example, a lag tire suitable for rough terrain. The left and right wheels 106 have wheel centers C connected to each other by an axle 108 so that the left and right wheels 106 can rotate in synchronization with each other.

  The rotating shaft 104 is attached to a bracket 105 at a position eccentric from the wheel center C by an eccentric amount L. The eccentric amount L of the rotating shaft 104 can be adjusted by changing the mounting position on the bracket 105, and is set to 25 mm in the present embodiment. Therefore, when the eccentric amount L of the rotating shaft 104 is changed, the right and left through holes 78a of the leg members 78 that overlap the left and right through holes 77a of the rear leg support pipe 77 are appropriately selected, so that the rear part of the second beach cleaner 50 is changed. The mounting height from the ground GL can be adjusted. That is, the mounting height of the rotating shaft 104 from the ground GL can be adjusted by inserting the locking pin or the like into any of the left and right through holes 78a of the leg member 78.

  Thus, since the wheel 106 is provided at a position where the rotation shaft 104 is eccentric with respect to the wheel center C, when the wheel 106 rotates, the wheel 106 and the rotation shaft 104 swing up and down, and the rear portion of the frame 53 Will vibrate up and down. More specifically, as shown in FIG. 6, when the wheel 106 rotates and the rotating shaft 104 moves downward from the wheel center C, the rear portion of the frame 53 moves downward. On the other hand, as shown in FIG. 7, when the wheel 106 rotates and the rotating shaft 104 moves upward from the wheel center C, the rear part of the frame 53 moves upward. At this time, since the front part of the frame 53 sinks downward, the keel 54 and the scraper 55 (see FIG. 4) provided in the front part of the frame 53 sink deeper into the ground GL. That is, the wheel 106 is provided at a position where the rotating shaft 104 is eccentric with respect to the wheel center C, so that the sinking amount of each keel 54 and the scraper 55 into the sand is deepened, and dust is efficiently removed from the sand. There is also an effect of removing.

Note that the speed of the vertical vibration can be changed by changing the diameter of the wheel 106. That is, if the second beach cleaner 50 is pulled at the same speed, the vertical vibration is slow when the wheel 106 has a large diameter, and the vertical vibration is slow when the wheel 106 has a small diameter. Get faster. In the present embodiment, the diameter of the wheel 106 is set to 490 mm.
Further, the left-right width between the outer ends of the wheels 106 of the left and right rear legs 76 is made narrower than the left-right width of the frame 53. That is, the left and right wheels 106 are respectively arranged on the inner side in the vehicle width direction of the front ski plate 74 and are spaced from each other. Therefore, when the second beach cleaner 50 travels, the second beach cleaner 50 is moved around the front ski plate 74. Easy to swing left and right.

Next, an outline of a procedure for cleaning the sandy beach using each of the beach cleaners 20 and 50 will be described.
First, as shown in FIG. 1, the beach cleaners 20 and 50 and the garbage collection station 40 are loaded on the trailer 13 and transported to a predetermined cleaning work place. Here, the beach cleaners 20 and 50 are loaded on the trailer 13 in an assembled state, while the garbage collection station 40 includes left and right front and rear divided bodies 41a and 41b, a right intermediate divided body 41d, and front and rear connected parts. It is loaded on the trailer 13 in a state of being divided into the member 42 and each foot member 45.

  More specifically, first, a set of front and rear divided bodies 41a and 41b (or a set of front or rear divided bodies) are placed on the trailer 13 (accommodated in the loading section 16), and then each beach cleaner 20, 50 is placed. Is placed on the trailer 13. At this time, the first beach cleaner 20 has both side portions of the front and rear lateral members 24a and 24b of the frame 22 to the left and right side portions 16b and 16c of the stacking portion 16 (upper side portion 44c of the guide member 44 of the dust collection station 40). Since the sand pins 23 on both sides of the last row are in contact with the outer surface of the wheel house 16a of the stacking portion 16 from the front, the rearward movement of the first beach cleaner 20 is restricted.

  The second beach cleaner 50 is loaded with the vertical member 51 of the frame 53 placed on the front and rear horizontal members 24a and 24b of the first beach cleaner 20 in the loaded state and inclined slightly downward. Each keel 54 abuts against the front lateral member 24a of the first beach cleaner 20 from the front, so that the rearward movement of the second beach cleaner 50 is restricted.

  In the garbage collection station 40, another set of front and rear divided bodies 41a and 41b (or a set of front or rear divided bodies) and a right intermediate divided body 41d are arranged in front of the second beach cleaner 50 in the loaded state. It mounts so that it may overlap with the part inclination part 57 and the scraper frame 58. Further, each connecting member 42 is mounted, for example, on the right side of the stacking unit 16 in a front-down state, and each foot member 45 is accommodated, for example, on the left rear side of the stacking unit 16.

  The loading state of the garbage collection station 40 is not limited to the above-described one, and only the right intermediate divided body 41d is mounted above the front inclined portions 57 and the scraper frame 58 of the second beach cleaner 50 in the loading state. For example, the pair of front and rear divided bodies 41 a and 41 b are mounted so as to be arranged in the left-right direction behind the second beach cleaner 50, and the other set of front and rear divided bodies 41 a and 41 b are mounted in the stacking unit 16. Also good. At this time, the foot members 45 are housed by being appropriately distributed on the left and right of the rear portion of the stacking portion 16.

  Next, the beach cleaners 20 and 50 in the loaded state are lowered to the ground. At this time, the rear divided body 41 b is connected to the left and right side portions 16 b and 16 c of the loading portion 16 of the trailer 13 to obtain the loading and unloading work state, and the beach cleaners 20 and 50 in the loading state along the left and right guide members 44. , The beach cleaners 20 and 50 can be lowered to the ground relatively easily even when they are in a state of being integrally assembled, and the process can be quickly transferred to the garbage collection operation. Can do.

  Next, the garbage collection station 40 is installed at a predetermined position on the sand beach. First, one rear division body 41b is removed from the left side portion 16b of the loading portion 16 of the trailer 13 in the unloading work state, and the rear division body 41b, the right intermediate division body 41d, and the front division body 41a are removed. The right side structure 41R is configured by coupling. On the other hand, the left side structure 41L is configured by connecting the front divided body 41a to the right side 16c of the stacking portion 16 of the trailer 13.

  The left and right side structures 41R and 41L are connected via the front and rear connecting members 42, and the foot recovery members 40 are assembled as the installation state by attaching the foot members 45 to predetermined positions. At this time, by loading the relatively large garbage collection station 40 on the loading unit 16 in a state of being divided into a plurality of divided bodies, the loading and unloading work on the trailer 13 of the garbage collection station 40 can be facilitated. .

  Next, the first beach cleaner 20 is pulled by the vehicle 1 and travels on the sand beach at a constant speed, thereby collecting relatively large garbage on the sand beach. Since the first beach cleaner 20 collects relatively large garbage on the sand beach while each sand pin 23 is biting into the sand, the running resistance is relatively large, and the running speed is as low as about 5 to 10 km / h. Is set.

  As described above, when the first beach cleaner 20 travels on the sand beach and a predetermined amount of garbage is collected under the frame 22, the first beach cleaner 20 returns to the garbage collection station 40 and collects the collected garbage. Work is done. At this time, when the first beach cleaner 20 enters between the left and right side structures 41R and 41L after the vehicle 1 passes between the left and right structures 41R and 41L of the garbage collection station 40, the left and right sides of the frame 22 are moved. Rides on the left and right side structures 41R and 41L, and the first beach cleaner 20 is lifted up by a predetermined amount (see FIG. 3). Then, the vehicle 1 and the first beach cleaner 20 are stopped and dropped onto the sand surface with the first beach cleaner 20 riding on the upper sides 44c of the guide members 44 of the left and right side structures 41R and 41L. After performing the dust collection operation, the vehicle 1 and the first beach cleaner 20 are run again to repeat the above-described dust collection operation.

  After the predetermined range of cleaning is performed by the first beach cleaner 20, the second beach cleaner 50 is pulled to the same range to collect relatively small dust on the sand beach. Thus, by using the second beach cleaner 50 after the first beach cleaner 20, damage to the keel 54, the scraper 55, the net 56, and the like corresponding to fine dust can be suppressed. The second beach cleaner 50 is softened by digging up the sand beach by the action of the first beach cleaner 20 during traveling, and it is necessary to scrape sand and dust by each keel 54 and scraper 55. The traveling speed is set to 15 to 25 km / h, which is slightly faster than the first beach cleaner 20.

  As the second beach cleaner 50 runs on the sandy beach, relatively small dust is scraped up by the keels 54 and the scraper 55 together with the sand, and these are collected in the net 56 at the rear of the frame 53. At this time, since the mesh size of the wire mesh is set to become smaller in order from the front side of the bottom wall portion 92 of the mesh body 56, collected dust is difficult to fall and clogging of the wire mesh is suppressed.

While the second beach cleaner 50 is traveling, the left and right wheels 106 rotate about the rotating shaft 104 eccentric from the wheel center C, so that the rear portion of the frame 53 is shaken up and down, and vertical vibrations are applied to the net 56. Therefore, the sand collected in the net 56 is screened off from the net 56 due to the vertical vibration, so that the accumulation of sand in the net 56 is suppressed.
At this time, since the left and right wheels 106 are connected to each other by the axle 108, the left and right wheels 106 rotate in synchronization with each other, so that the net 56 has a larger size than the case where the left and right wheels 106 rotate independently. As a result, the sand that has entered the net 56 can be well screened and prevented from accumulating. In addition, the second beach cleaner 50 can suppress the roll of the second beach cleaner 50 and stably ground the keel 54 and the scraper 55 as compared with the case where the left and right wheels 106 rotate independently. .

  As described above, when the second beach cleaner 50 travels on the sand beach and a predetermined amount of garbage is collected in the net 56, the second beach cleaner 50 returns to the garbage collection station 40, and the collected garbage is collected. Collection work is performed. At this time, when the second beach cleaner 50 enters between the left and right side structures 41R and 41L after the vehicle 1 passes between the left and right structures 41R and 41L of the garbage collection station 40, the left and right lift arms 81a before and after the second beach cleaner 50 enter. , 81b ride on the left and right side structures 41R, 41L, and the second beach cleaner 50 is lifted up by a predetermined amount. Then, with the second beach cleaner 50 riding on the upper sides 44c of the guide members 44 of the left and right side structures 41R and 41L, the vehicle 1 and the second beach cleaner 50 are stopped and the net 56 is rotated. After collecting the collected dust, the vehicle 1 and the second beach cleaner 50 are run again to repeat the above-described dust collecting operation.

  Here, when collecting the garbage collected by rotating the net 56, the garbage is directly put into the loading unit 16 of the trailer 13 adjacent to the left of the garbage collection station 40. Therefore, the loading unit 16 can be used as a garbage collection container, and the collected garbage can be transported by the trailer 13 after the cleaning work is completed, and the collection work of the garbage dropped on the ground becomes unnecessary, and the number of cleaning work steps is reduced. Reduction is possible.

  As described above, according to the present embodiment, the wheel 106 is attached to the rear of the keel 54 and the scraper 55 of the frame 53, and the rotation shaft 104 of the wheel 106 is provided at a position eccentric with respect to the wheel center C. As a result, the rotary shaft 104 swings up and down as the wheel 106 rotates, so that vertical vibrations are applied to the rear of the frame 53 and the sand that has entered the mesh body 56 is screened out so that it does not accumulate. . As a result, the burden on the operator can be reduced without requiring special traveling operation or sand removal work.

  In the above-described embodiment, the left and right wheels 106 are rotated in synchronization with each other by connecting the left and right wheels 106 with the axle 108 that connects the wheel center C. Therefore, the left and right wheels 106 are independent of each other. Compared to the case of rotation, the left and right of the mesh body 56 vibrate up and down more greatly in the same cycle, and the sand that has entered the mesh body 56 can be well screened and prevented from accumulating. As a result, the burden on the operator can be reduced without requiring special traveling operation or sand removal work. In addition, the second beach cleaner 50 can suppress the roll of the second beach cleaner 50 and stably ground the keel 54 and the scraper 55 as compared with the case where the left and right wheels 106 rotate independently. .

  Further, in the above-described embodiment, the amount of sinking of the keel 54 and the scraper 55 into the sand is adjusted according to the situation of the sand by providing the wheel 106 so that the mounting height from the ground GL to the frame 53 can be adjusted. Thus, dust can be effectively removed, and as a result, the burden on the operator can be reduced.

However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.
For example, in the above-described embodiment, the wheel 106 is disposed on the inner side in the vehicle width direction of the front ski plate 74, but the wheel may be disposed on the outer side in the vehicle width direction of the front ski plate 74. In this case, since the wheels are arranged with a wider interval in the vehicle width direction, the rear part of the second beach cleaner 50 can be stabilized.
In addition, in the above-described embodiment, a pair of wheels 106 are provided on the left and right, but two or more wheels may be provided. In this case, a plurality of wheels may be disposed on the outer side in the vehicle width direction of the front ski plate 74 to stabilize the rear portion of the second beach cleaner 50. Further, only one wheel may be provided at the left and right center CL.

It is a side view at the time of carrying the beach cleaner etc. which concern on this invention on a trailer. It is a top view which shows the state by which the 1st beach cleaner was lifted up to the garbage collection station. It is a left view which shows the state by which the 1st beach cleaner was lifted up to the garbage collection station. It is a side view which shows the vehicle towing state of a 2nd beach cleaner. It is a top view of a 2nd beach cleaner. It is a left view which shows the rear part of a 2nd beach cleaner. It is a left view which shows the rear part of a 2nd beach cleaner. It is a left view which shows the rear part of a 2nd beach cleaner. It is a top view which shows the 2nd beach cleaner in FIG.

Explanation of symbols

1 vehicle (towing vehicle)
50 2nd Beach Cleaner (Beach Cleaner)
51 Vertical member 52a Front lateral member 52b Rear lateral member 53 Frame 54 Keel (separator)
55 Scraper (separator)
56 Mesh 67 Towing part (towed part)
74 Front Ski (Ski Member)
104 Rotating shaft 106 Wheel 108 Axle GL Ground (sand surface)

Claims (3)

A frame having a frame formed by a vertical member and a horizontal member, and provided with a ski member that is attached to the front portion of the frame and that contacts the sand ground, and a to-be-towed portion that is pulled by a towing vehicle. In a beach cleaner provided with a separator that separates and scrapes dust from the sand, and a net that collects dust scraped up by the separator in the frame behind the separator.
A beach cleaner characterized in that a wheel is attached to the rear of the separator of the frame, and a rotation shaft of the wheel is provided at a position eccentric with respect to a wheel center.   The beach cleaner according to claim 1, wherein the wheels are provided in a pair of left and right and are connected to each other by an axle that connects the wheel centers.   The beach cleaner according to claim 1, wherein the wheel is provided so that an attachment height from a sand surface to the frame can be adjusted.

Images