AU2014200884B2

AU2014200884B2 - Rotary drum type litter separating apparatus

Info

Publication number: AU2014200884B2
Application number: AU2014200884A
Authority: AU
Inventors: Kamio Abe; Yoshihiro Kimura
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2013-05-24
Filing date: 2014-02-20
Publication date: 2015-07-16
Anticipated expiration: 2034-02-20
Also published as: AU2014200884A1; US20140346092A1; JP2014227784A; BR102014011950A2; JP6143339B2; DE102014209515A1

Abstract

ROTARY DRUM TYPE LITTER SEPARATING APPARATUS In a rotary drum type litter separating apparatus (10) including a cylindrical unit (50) supported rotatably and having a peripheral surface formed in a mesh form as a part of the cylindrical unit (50), the cylindrical unit (50) includes a bottomed part (56) closing one end of the cylindrical unit (50) and an opening (58a) opening the other end of the cylindrical unit (50), and a mesh part (100) which is a detachable separate member is further attached to an outer periphery of the cylindrical unit (50). The apparatus is capable of separating various kinds of litter of different sizes from sand and reliably collecting the litter. Moreover, the mesh part can be replaced easily. Thus, the workability is improved, and the man-hour is reduced. "tr 00 cm CD LO r- co Cj Cj Lo C.0 C.0 C:) Lo C-0 C"i r- V 00, CD C-0 C-0 00 C-0 m C:) m

Description

1 ROTARY DRUM TYPE LITTER SEPARATING APPARATUS Technical Field [0001] The present invention relates to a rotary drum type litter separating apparatus for collecting litter in a beach. Background Art [0002] As shown in Patent Document 1 listed below, there has been a beach cleaner as an apparatus for collecting litter scattered on the sand ground of a seabeach or the like. [0003] Patent Document 1 Japanese Patent Application Publication No. 2010-174518 [0004] As described in Patent Document 1, a mesh of a drum type sieving member is usually formed of a single mesh. Thus, some types of litter may possibly pass through the mesh, which makes efficient litter separation impossible. Moreover, the drum type sieving member needs to be replaced with a different sieving member from one situation to another depending on the state of litter scattered on a sandy beach or the like, which makes litter collection time consuming. Object of the Invention [0005] It is the object of the present invention to substantially overcome or ameliorate one or more of the above disadvantages. Summary of the Invention [0006] The present invention provides a rotary drum type litter separating apparatus, including a cylindrical unit supported rotatably, for rotation about a rotation axis, and having a peripheral surface formed in a mesh form as a part of the cylindrical unit, in which the cylindrical unit includes a bottom part closing one end of the cylindrical unit and an opening opening the other end of the cylindrical unit, and a mesh part, which is a detachable separate member, is further attached to an outer periphery of the cylindrical unit, wherein a rotational drive mechanism is provided outwardly around the peripheral surface of the cylindrical unit, centered in a direction of the rotation axis between the bottom part and the opening, and the mesh part is detachably attached to a portion of the outer periphery of the cylindrical unit excluding the rotational drive mechanism.

2 [0007] Preferably, the mesh part is attached in such a way as to wrap the cylindrical unit, and opposite end sides of the mesh part are connected by using hooks provided on the opposite end sides of the mesh part. [0008] Preferably, a mesh size of the mesh part is finer than a mesh size of the peripheral surface of the cylindrical unit. [0009] Preferably, a rotational drive mechanism is provided on the peripheral surface of the cylindrical unit around a center in a height direction of the cylindrical unit, and the mesh part is detachably attached to a portion of the outer periphery of the cylindrical unit excluding the rotational drive mechanism. [0010] According to an embodiment of the present invention, the mesh part, which is a detachable separate member, is attached to the outer periphery of the cylindrical unit having a peripheral surface formed in a mesh form. Thus, by preparing in advance a plurality of mesh parts of different mesh sizes and attaching a mesh part suitable for the sizes of litter to be separated, it is possible to separate various kinds of litter of different sizes from sand and reliably collect the litter. Moreover, the mesh part can be replaced easily. Thus, the workability is improved, and the man-hour is reduced. [0011] According to an embodiment of the present invention, the mesh part is attached in such a way as to wrap the cylindrical unit, and the opposite end sides of the mesh part are connected by using the hooks provided on the opposite end sides of the mesh part. Thus, attachment and detachment of the mesh part is easy, and the man-hour for such operations is reduced. [0012] According to an embodiment of the present invention, the mesh size of the mesh part is finer than the mesh size of the peripheral surface of the cylindrical unit. Thus, by changing the mesh size according to the sizes of litter to be separated, smaller litter can be collected. [0013] According to an embodiment of the present invention, the rotational drive mechanism is provided on the peripheral surface of the cylindrical unit around the center thereof in the height direction, and the mesh part is detachably attached to the portion of the outer periphery of the cylindrical unit excluding the rotational drive mechanism. Thus, the width of the mesh part is small, and a storage space therefor can be slim.

3 Brief Description of the Drawings [0014] A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings in which: [0015] Fig. 1 is a perspective view showing a beach cleaner according to an embodiment, and a towing vehicle which tows the beach cleaner. [0016] Fig. 2 is a view of the exterior of a rotary drum type litter separating apparatus shown in Fig. 1. [0017] Fig. 3 is a view showing the relation between a rotational drive mechanism and a drive gear, and a planet gear shown in Fig. 1. [0018] Fig. 4 is a schematic cross-sectional view of a cylindrical unit. [0019] Fig. 5 is a perspective view of a metallic blade. [0020] Fig. 6 is a view showing the metallic blade as seen from a direction X in Fig. 5. [0021] Fig. 7 is a view showing the metallic blade as seen from a direction Y in Fig. 5. [0022] Fig. 8 is a view of a chief part of the litter separating apparatus as seen from an opening side. [0023] Fig. 9 is a schematic view showing an example of a mesh part detachably attached to the outer periphery of the cylindrical unit shown in Fig. 4. [0024] Fig. 10 is a schematic view showing another example of the mesh part detachably attached to the outer periphery of the cylindrical unit shown in Fig. 4. [0025] Fig. 11 is an enlarged view of details of a part in Fig. 9. [0026] Fig. 12 is an explanatory view of a method of attaching the mesh part.

4 [0027] Fig. 13 is a view showing a state where the mesh part is attached to the outer periphery of the cylindrical unit. Mode for Carrying Out the Invention [0028] A rotary drum type litter separating apparatus in a vehicle according to an embodiment the present invention will now be described in detail through a preferred embodiment with reference to the accompanying drawings. [0029] Fig. 1 is a perspective view showing a beach cleaner 12 including a rotary drum type litter separating apparatus 10 according to an embodiment and a towing vehicle 14 which tows the beach cleaner 12. Fig. 2 is a view of the exterior of the rotary drum type litter separating apparatus 10. Note that the terms front, rear, left, right, upper, and lower are based on directions seen from the driver of the towing vehicle 14, unless otherwise noted. [0030] In the embodiment, an ATV (All-Terrain Vehicle), which is a saddle-ride type rough terrain vehicle, is employed as the towing vehicle 14. The towing vehicle 14 includes: a pair of left and right front wheels 20 provided to a front lower portion of the body; a pair of left and right rear wheels 22 provided to a rear lower portion of the body; a pair of left and right front fenders 24 provided above the front wheels 20; and a pair of left and right rear fenders 26 provided above the rear wheels 22. [0031] A handlebar 28 with which the front wheels 20 can be steered is provided above the front wheels 20. A front carrier 30 is attached in front of the handlebar 28, and a seat 32 and a rear carrier 34 are attached behind the handlebar 28. [0032] Moreover, a pair of left and right step floors 36 for the driver seated on the seat 32 to rest his or her feet are formed between the handlebar 28 and the seat 32. This towing vehicle 14 rotates the rear wheels 22 with an unillustrated engine as a drive source. [0033] The beach cleaner 12 includes: a tow frame 40 connectable to the towing vehicle 14; a pair of left and right wheels 42 provided on the lower side of a rear portion of the tow frame 40; and a support frame 44 on which rotatably supports the rotary drum type litter separating apparatus (hereinafter, referred to as the litter separating apparatus) 10.

5 [0034] The litter separating apparatus 10 includes a cylindrical unit 50 having a peripheral surface formed in a mesh form as a part of the cylindrical unit 50. A rotational drive mechanism 52 is provided on the peripheral surface of the cylindrical unit 50 around the center of the cylindrical unit 50 in its height direction (the direction of its rotation axis). The rotational drive mechanism 52 includes a plurality of engagement portions 54 each formed in a pipe shape along the height direction of the peripheral surface of the cylindrical unit 50. The plurality of engagement portions 54 are attached in such a way as to make a loop around the outer periphery of the cylindrical unit 50. The cylindrical unit 50 includes a circular bottomed part 56 closing one end of the cylindrical unit 50, and an annular rim plate 58 having an opening 58a opening the other end of the cylindrical unit 50. [0035] The cylindrical unit 50 includes: a plurality of pipes 60 each provided along the outer periphery of the cylindrical unit 50 in the height direction; and a mesh part (first mesh part) 62 attached to the inner side of the plurality of pipes 60 and wrapped in such a way as to cover the peripheral surface of the cylindrical unit 50. The peripheral surface of the cylindrical unit 50 is formed in a mesh form by the plurality of pipes 60 and the mesh part 62. [0036] The opening 58a functions as a loading port through which to load sand and litter mixed therein (hereinafter, referred to as mixed sand) into the cylindrical unit 50, and also functions as a removing port through which to remove litter remaining in the cylindrical unit 50. [0037] The tow frame 40 rotatably supports an axel 64 connected to the pair of left and right wheels 42, and a drive gear 66 is connected to the axel 64. The support frame 44 is attached to the tow frame 40 and rotatably supports the litter separating apparatus 10. The litter separating apparatus 10 is supported on the support frame 44 with the opening 58a on the left side and the bottomed part 56 on the right side. [0038] The support frame 44 includes a front frame 68, a rear frame 70, a left frame 72, and a right frame 74 surrounding the litter separating apparatus 10 from the front, rear, left, and right sides. A roll 76 is rotatably attached to each of left and right portions of the front frame 68 and the rear frame 70. The litter separating apparatus 10 is rotatably supported by the four, front, rear, left, and right rolls 76. Contact plates 78a, 78b to be in contact with the rolls 76 are attached to a left end portion and a right end portion of the cylindrical unit 50. These contact plates 78a, 78b are attached to the opposite end sides of the cylindrical unit 50, respectively.

6 [0039] Two plate-shaped metallic blades 80 are provided inside the cylindrical unit 50, each metallic blade 80 being provided extending from the opening 58a to the bottomed part 56 (see Fig. 2). One edge of each metallic blade 80 in its width direction is provided along the inner peripheral surface of the cylindrical unit 50, while the other edge extends inward of the cylindrical unit 50. The width of the metallic blade 80 is set to become smaller from the opening 58a of the cylindrical unit 50 toward the bottomed part 56 thereof. In other words, the metallic blade 80 is formed in such a way as to become wider toward the opening 58a. The two metallic blades 80 are provided symmetrically with respect to the rotation axis of the cylindrical unit 50, and are provided obliquely with respect to the height direction of the cylindrical unit 50. [0040] As shown in Fig. 3, a planet gear 82 is provided between the rotational drive mechanism 52 and the drive gear 66, and this planet gear 82 meshes with the rotational drive mechanism 52 and the drive gear 66. Thus, as the towing vehicle 14 tows the beach cleaner 12, the wheels 42 of the beach cleaner 12 rotate, and the force of this rotation is transmitted to the rotational drive mechanism 52 through the drive gear 66 and the planet gear 82, thereby rotating the cylindrical unit 50 of the litter separating apparatus 10 toward the front of the towing vehicle 14. [0041] Moreover, an operation lever 83 for manual engaging-disengaging (connecting disconnecting) operations between the planet gear 82 and the rotational drive mechanism 52 and drive gear 66 is provided at a rear end portion of the beach cleaner 12. By operating this operation lever 83, the planet gear 82 can be disconnected from and connected to the rotational drive mechanism 52 and the drive gear 66. With the planet gear 82 disconnected from the rotational drive mechanism 52 and the drive gear 66, the cylindrical unit 50 of the litter separating apparatus 10 can be manually rotated even when the towing vehicle 14 is stopped. [0042] Note that a cover member 84 which covers the litter separating apparatus 10 is attached to the support frame 44 so as to prevent a person from accidentally touching the litter separating apparatus 10 while the litter separating apparatus 10, i.e. the cylindrical unit 50 is rotating. [0043] Fig. 4 is a schematic cross-sectional view of the cylindrical unit 50. As the cylindrical unit 50 rotates, each metallic blade 80 scoops up mixed sand inside the cylindrical unit 50, and the mixed sand thus scooped up falls off the metallic blade 80 when the metallic blade 80 reaches a certain level. Since the peripheral surface of the cylindrical unit 50 is formed in a mesh form, the mixed sand can be efficiently sieved with the help of the falling of the mixed 7 sand off the metallic blade 80. As a result, the sand falls through the cylindrical unit 50, and only the litter remains inside the cylindrical unit 50. In other words, the litter and the sand are separated. Note that the sieving function (separating function) is enhanced by causing the mixed sand to fall from a higher level. [0044] A method of using the beach cleaner 12 will now be described briefly. Here, the tow frame 40 is connected to the towing vehicle 14, and mixed sand is loaded through the opening 58a of the cylindrical unit 50. Then, the towing vehicle 14 travels to rotate the cylindrical unit 50, so that the sand falls through the cylindrical unit 50 and the litter remains inside the cylindrical unit 50. Once the sand disappears from the inside of the cylindrical unit 50, the litter is collected through the opening 58a. An unillustrated litter collecting bag for litter collection can be attached to the opening 58a. Thus, the litter can be taken out through the opening 58a, and the litter can be put into the litter collecting bag. Moreover, since the opening 58a functions as a port through which to load mixed sand and also functions as a port through which to collect litter, the work efficiency is improved. Moreover, since the cylindrical unit 50 is rotated using the towing vehicle 14, there is no need to provide any drive source such as a motor to the beach cleaner 12. Thus, an inexpensive and convenient beach cleaner 12 can be provided. [0045] Fig. 5 is a perspective view of each metallic blade 80. Fig. 6 shows the metallic blade 80 as seen from a direction X in Fig. 5. Fig. 7 shows the metallic blade 80 as seen from a direction Y in Fig. 5. [0046] Each metallic blade 80 has a spiral shape defined by a quadric surface. Specifically, the metallic blade 80 has: a first flat portion 90; a first bent portion 92 formed connected to the first flat portion 90; a second flat portion 94 formed connected to the first bent portion 92; and a second bent portion 96 formed connected to the second flat portion 94. The metallic blade 80 is provided inside the cylindrical unit 50 such that the first flat portion 90 and the second bent portion 96 of the metallic blade 80 are disposed on the opening 58a side and the bottomed part 56 side, respectively. The first bent portion 92 and the second bent portion 96 form the metallic blade 80 in a spiral shape (twisted shape) defined by a quadric surface, and provides variations in angle to the metallic blade 80, so that the first flat portion 90 and the second flat portion 94 appear differently from each other in angle and orientation (see Fig. 6).

8 [0047] The angle between the first flat portion 90 and the second flat portion 94 (smaller angle) as seen from the direction X in Fig. 5 is 580. The angle between the second flat portion 94 and a tangent line of the second bent portion 96 at its tip (smaller angle) as seen from the direction Y in Fig. 5 is 59.90. [0048] Fig. 8 is a view of the chief part of the litter separating apparatus 10 as seen from the opening 58a side. As shown in Fig. 8, the angle between the first flat portion 90 and the circumferential direction of the cylindrical unit 50 (smaller angle) is set to be small, and the angle between the first flat portion 90 and the height direction of the cylindrical unit 50 (smaller angle) is set to be large. On the other hand, the angle between the second flat portion 94 and the circumferential direction of the cylindrical unit 50 (smaller angle) is larger than that of the first flat portion 90, and the angle between the second flat portion 94 and the height direction of the cylindrical unit 50 (smaller angle) is smaller than that of the first flat portion 90. The first bent portion 92 is twisted in such a way as to bend from the first flat portion 90 to the second flat portion 94. Moreover, a length Li of the first flat portion 90 and the first bent portion 92 in the height direction of the cylindrical unit 50 is smaller than a length L2 of the second flat portion 94 and the second bent portion 96. [0049] With this construction, the first flat portion 90 and the first bent portion 92 of each metallic blade 80 can quickly move mixed sand near the opening 58a of the cylindrical unit 50 to a slightly near side (the opening 58a side) of a center area of the cylindrical unit 50 in the height direction. Accordingly, the mixed sand near the opening 58a of the cylindrical unit 50 can be prevented from dropping out of the cylindrical unit 50 through the opening 58a. The first flat portion 90 and the first bent portion 92 have a function of quickly moving litter. [0050] Moreover, the second flat portion 94 and the second bent portion 96 of each metallic blade 80 can scoop up mixed sand and drop the scooped mixed sand from a higher level. Accordingly, the litter and the sand can be separated efficiently. The second flat portion 94 and the second bent portion 96 have a function of separating litter and sand. [0051] Moreover, the width of each metallic blade 80 is set to become smaller from the opening 58a of the cylindrical unit 50 toward the bottomed part 56 thereof. Thus, the amount of mixed sand scooped up by the metallic blade 80 is the largest at a portion of the second flat portion 94 on the opening 58a side (a substantially center portion of the metallic blade 80), while the 9 amount of mixed sand scooped up by the metallic blade 80 is not so large at a portion of the second flat portion 94 on the bottomed part 56 side and the second bent portion 96 (a portion of the metallic blade 80 on the bottomed part 56 side). Accordingly, mixed sand tends to gather around the center of the cylindrical unit 50 in the height direction, which in turn makes it possible to prevent litter from gathering on the far side, i.e. the bottomed part 56 side of the cylindrical unit 50. Hence, the litter can be collected easily. As described above, the litter separating apparatus 10 can separate sand and litter efficiently. [0052] Here, the mesh size of the mesh part 62 is set with the mesh strength, rigidity, and other conditions taken into consideration. Thus, when litter is relatively small (when litter is smaller than the mesh size of the mesh part 62), the litter passes through the mesh part 62 and the litter falls through the cylindrical unit 50 along with the sand. Thus, sand and relatively small-sized litter cannot be separated. [0053] For this reason, in the embodiment, a detachable mesh part (second mesh part) 100 is attached to the outer periphery of the cylindrical unit 50 to handle litter passing through the mesh part 62. This construction will now be described. [0054] Fig. 9 is a schematic view showing an example of the mesh part 100 detachably attached to the outer periphery of the cylindrical unit 50. The mesh part 100 is attached in such a way as to wrap the outer periphery of the cylindrical unit 50, specifically, portions of the outer periphery of the mesh potion 62 exposed to the outside. The mesh size of the mesh part 100 is finer (smaller) than the mesh size of the mesh part 62. The mesh part 100 is attached to portions of the outer periphery of the cylindrical unit 50 excluding the rotational drive mechanism 52. Specifically, the mesh part 100 includes a mesh part 100a attached to the left of the rotational drive mechanism 52 and a mesh part 100b attached to the right of the rotational drive mechanism 52. The widths of the mesh part 100a and the mesh part 100b are different but the other parts of their constructions are the same. Thus, the description will only be provided for the mesh part 100a. [0055] Hooks 102, 104 are provided on one end side and the other end side of the mesh part 100a in the longitudinal direction, respectively. There are provided two hooks 102 and two hooks 104 along the transverse direction (width direction) of the mesh part 100a. Note that 10 there may instead be provided a single hook 102a across the mesh part 100a in the transverse direction as shown in Fig. 10. [0056] Moreover, connection parts 106 for detachably connecting the one end side and the other end side of the mesh part 100a are provided at the one end of the mesh part 100a (see Fig. 11). Each connection part 106 is formed of a fastener 108 including a lever 108a, and a substantially ring-shaped hanging part 110 provided to the lever 108a. [0057] As shown in Fig. 12, to attach the mesh part 100a to the outer peripheral surface of the cylindrical unit 50, the hook 102 provided on the one end side of the mesh part 100a is hung onto any one of the pipes 60 provided along the outer periphery of the cylindrical unit 50, and then the mesh part 100a is wound around the cylindrical unit 50 once to wrap the outer peripheral surface of the cylindrical unit 50. Then, the hanging part 110 is hung onto the hook 104 provided at the other end of the mesh part 100a, and thereafter the lever 108a of the fastener 108 is pushed toward the mesh part 100a. As a result, the one end side and the other end side of the mesh part 100a are connected. Fig. 13 shows a state where the mesh part 100 (mesh parts 100a, 100b) is attached to the outer periphery of the cylindrical unit 50. [0058] Note that although the hooks 104 and the connection parts 106 are used to connect the opposite end sides of the mesh part 100, the hooks 104 may simply be hung onto the mesh of the mesh part 100 to connect the opposite end sides of the mesh part 100. In this case, the connection parts 106 are not needed. [0059] As described above, according to the above embodiment, the mesh part 100, which is a detachable separate member, is attached to the outer periphery of the cylindrical unit 50 having a peripheral surface formed in a mesh form. Thus, by preparing in advance a plurality of mesh parts 100 of different mesh sizes and attaching a mesh part 100 suitable for the sizes of litter to be separated, it is possible to separate various kinds of litter of different sizes from sand and reliably collect the litter. Moreover, the mesh part 100 can be replaced easily. Thus, the workability is improved, and the man-hour is reduced. [0060] The mesh part 100 is attached in such a way as to wrap the cylindrical unit 50, and the opposite end sides of the mesh part 100 are connected by using the hooks 102, 104 provided on the opposite end sides of the mesh part 100. Thus, attachment and detachment of the mesh part 100 is easy, and the man-hour for such operations is reduced. The mesh size of the mesh part 11 100 is finer than the mesh size of the peripheral surface of the cylindrical unit 50 (the mesh size of the mesh part 62). Thus, smaller litter can be collected. [0061] The opening 58a functions as a port through which to load mixed sand and as a port through which to collect litter. Thus, the loading of mixed sand and the collecting of litter can be done at the same position, and the work efficiency is improved. The rotational drive mechanism 52 is provided on the peripheral surface of the cylindrical unit 50 around the center thereof in the height direction, and the mesh part 100 is detachably attached to the portions of the outer periphery of the cylindrical unit 50 excluding the rotational drive mechanism 52. Thus, the widths of the mesh parts 100a, 100b are small, and a storage space therefor can be slim. [0062] Note that although the mesh part 100 is formed of two members (mesh parts 100a, 100b) in the above embodiment, the mesh part 100 can be formed of a single member on condition that the rotational drive mechanism 52 is provided on an end portion of the mesh part 62 exposed to the outside at such a position as to abut one of the contact plates 78a, 78b, instead of being provided on the exposed portion of the mesh part 62 around the center in the height direction. Moreover, a lid part that closes the opening 58a of the cylindrical unit 50 may be attached when the litter separating apparatus 10 is used. In this way, mixed sand inside the cylindrical unit 50 can be reliably prevented from dropping out through the opening 58a while the cylindrical unit 50 is rotated.

Claims

1. A rotary drum type litter separating apparatus, comprising a cylindrical unit supported rotatably, for rotation about a rotation axis, and having a peripheral surface formed in a mesh form as a part of the cylindrical unit, wherein the cylindrical unit includes a bottom part closing one end of the cylindrical unit and an opening opening the other end of the cylindrical unit, and a mesh part, which is a detachable separate member, is further attached to an outer periphery of the cylindrical unit, wherein a rotational drive mechanism is provided outwardly around the peripheral surface of the cylindrical unit, centered in a direction of the rotation axis between the bottom part and the opening, and the mesh part is detachably attached to a portion of the outer periphery of the cylindrical unit excluding the rotational drive mechanism.

2. The rotary drum type litter separating apparatus according to claim 1, wherein the mesh part is attached in such a way as to wrap the cylindrical unit, and opposite end sides of the mesh part are connected by using hooks provided on the opposite end sides of the mesh part.

3. The rotary drum type litter separating apparatus according to claim 1 or 2, wherein a mesh size of the mesh part is finer than a mesh size of the peripheral surface of the cylindrical unit. Honda Motor Co., Ltd. Patent Attorneys for the Applicant/Nominated Person SPRUSON & FERGUSON