WO2013171717A1 - Vertical combined shredding and mixing truck - Google Patents

Vertical combined shredding and mixing truck Download PDF

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Publication number
WO2013171717A1
WO2013171717A1 PCT/IB2013/054041 IB2013054041W WO2013171717A1 WO 2013171717 A1 WO2013171717 A1 WO 2013171717A1 IB 2013054041 W IB2013054041 W IB 2013054041W WO 2013171717 A1 WO2013171717 A1 WO 2013171717A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw feeder
product
truck according
integral
truck
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2013/054041
Other languages
French (fr)
Inventor
Ivano ZANIBONI
Dino BONI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agricola Sacchina Di Boni Dino E Bruno Ss Soc
COMAG Srl
Original Assignee
Agricola Sacchina Di Boni Dino E Bruno Ss Soc
COMAG Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agricola Sacchina Di Boni Dino E Bruno Ss Soc, COMAG Srl filed Critical Agricola Sacchina Di Boni Dino E Bruno Ss Soc
Priority to US14/401,919 priority Critical patent/US9642335B2/en
Priority to EP13731951.3A priority patent/EP2849558B1/en
Publication of WO2013171717A1 publication Critical patent/WO2013171717A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K5/00—Feeding devices for stock or game ; Feeding wagons; Feeding stacks
    • A01K5/001—Fodder distributors with mixer or shredder
    • A01K5/004—Fodder distributors with mixer or shredder with mixing or shredding element rotating on vertical axis
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F29/00—Cutting apparatus specially adapted for cutting hay, straw or the like
    • A01F29/005—Cutting apparatus specially adapted for cutting hay, straw or the like for disintegrating and cutting up bales of hay, straw or fodder
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F29/00—Cutting apparatus specially adapted for cutting hay, straw or the like
    • A01F29/09—Details
    • A01F29/10—Feeding devices
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K5/00—Feeding devices for stock or game ; Feeding wagons; Feeding stacks
    • A01K5/02—Automatic devices
    • A01K5/0258—Automatic devices with endless screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/067—Tub-grinders

Definitions

  • the present invention relates to a vertical combined shredding and mixing truck.
  • vertical mixing and shredding trucks which comprise, within an outer enclosure that is open at the top, one or more vertical, motorized screw feeders which are provided with applied blades.
  • fibrous products such as straw or hay gathered in cylindrical or prism-shaped bales, and also ensiled and farinaceous products, are introduced into the combined mixing and shredding truck, and the whole is subjected, by the motion of the screw feeders, to an operation of shredding and mixing, so as to obtain a product as uniform as possible which is discharged from a side outlet.
  • the aim of the present invention is to provide a vertical combined shredding and mixing truck that is capable of providing a product with great uniformity, so as to enable an optimal feeding of cows, and in this manner obtain a significant increase in the production of milk by those cows.
  • the set aim is achieved by a vertical combined shredding and mixing truck, according to the invention, characterized in that it comprises the characteristics according to the following claims.
  • Figure 1 is a simplified view of the combined shredding and mixing truck with a vertical screw feeder, with the door of the discharge opening raised in order to allow the interior to be seen;
  • Figure 2 is a view of a detail of the device applied to the screw feeder visible in Figure 1 ;
  • Figure 3 is a view of a variation of the device.
  • the reference numeral 1 generally designates the device according to the invention rendered integral with the motorized vertical screw feeder 2 present within the outer enclosure 3 of the truck, visible through the open outlet 3a of the enclosure.
  • the device 1 is, conveniently, arranged at the initial portion of the screw feeder 2 at the base 3b of the housing 3, proximate to the blade 2a applied at the end of said screw feeder 2.
  • the device 1 comprises a rotor that is mounted idle, for example thanks to the interposition of two bearings at the portions 4a, 4b, on an axle 5 welded to a plate 6, which is applied at the lower surface of the screw feeder 2 and locked in place by way of bolts inserted in holes like 6a.
  • the rotor protrudes from the edge 2b of the screw feeder 2, and has a horizontal axis.
  • the rotor is positioned, conveniently, laterally to the screw feeder 2.
  • the rotor is positioned at a distance from the outer enclosure 3 of the truck which is substantially comprised between 80 and 160 mm and, more preferably, between 100 and 130 mm.
  • the rotor comprises a disk 7 that carries integral tools that are adapted to come into contact with the product being processed and are constituted, for example, by five equidistant radial blades such as 8, which are conveniently fixed to the disk by way of plates such as 8a, held in position by way of screws such as 8b and 8c.
  • the arrangement of the device 1 in the initial portion of the screw feeder 2, i.e. in the region where the mixing action determined by the screw feeder 2 is greatest, is such as to confer great efficiency on the device 1 , with the consequent possibility of achieving a high degree of uniformity of the mixed product which becomes particularly soft; in this manner cows are able to considerably increase milk production.
  • the rotor is idle makes it possible for it to rotate freely in both directions of rotation about its own axis, as well as to freely vary its velocity, thus avoiding possible sticking, especially in the initial steps of the mixing, when the presence of aggregates in the mass of product to be mixed is most likely.
  • a plurality of devices 1 can be provided, one of which is integral with the screw feeder 2, at the initial portion of the screw feeder at the base, and the remaining ones at at least one intermediate portion of the screw feeder itself.
  • Figure 3 represents a variation of the invention in which the tools associated with the rotor, which are adapted to come into contact with the product being processed, are constituted by equidistant and substantially radial vanes such as 9, which are fixed to the disk 7 of the rotor by way of plates such as 9a, which are held in position by screws such as 9b and 9c.
  • the screw feeder 2 When the outer enclosure 3 has been loaded with the product to be mixed, the screw feeder 2 is actuated in rotation about its own vertical rotation axis.
  • the rotor of the device 1 in contact with the product, begins to rotate freely about its own axis, thus causing the movement of the mass of product which is arranged laterally to the region affected by the operation of the screw feeder 2.
  • the rotor constantly causes a mixing action on the mass of product which would otherwise tend to be compacted against the walls of the outer enclosure 3, without being included in the mixing, as typically occurs in the known art.
  • the rotation of the rotor makes the mass of product arranged laterally to the screw feeder 2 fall downward, preventing it, among others, from exiting from the upper edge of the outer enclosure 3, and piles it toward the screw feeder 2, which then pushes it upward, with the result that all of the mass of product loaded in the enclosure 3 is in motion during the rotation of the screw feeder 2.
  • the truck according to the invention makes it possible to increase the homogeneity of feedstuffs constituted by a mixture of solid foods.
  • the invention thus conceived, is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims: thus, for example, the idle rotor can be rendered integral with the at least one screw feeder by way of the interposition of a bracket, so as to present a vertical axis, or an axis inclined at any angle.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Birds (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)
  • Fodder In General (AREA)
  • Crushing And Pulverization Processes (AREA)

Description

VERTICAL COMBINED SHREDDING AND MIXING TRUCK
The present invention relates to a vertical combined shredding and mixing truck.
Nowadays the very widespread presence is known of apparatus for the mechanized feeding of dairy cows and of fattening cows called vertical mixing and shredding trucks, which comprise, within an outer enclosure that is open at the top, one or more vertical, motorized screw feeders which are provided with applied blades.
Through the enclosure opening, fibrous products such as straw or hay gathered in cylindrical or prism-shaped bales, and also ensiled and farinaceous products, are introduced into the combined mixing and shredding truck, and the whole is subjected, by the motion of the screw feeders, to an operation of shredding and mixing, so as to obtain a product as uniform as possible which is discharged from a side outlet.
It is precisely a certain lack of uniformity of the product obtained that constitutes a drawback of conventional trucks, with a non-optimal performance in the diet of cows, and thus the aim of the present invention is to provide a vertical combined shredding and mixing truck that is capable of providing a product with great uniformity, so as to enable an optimal feeding of cows, and in this manner obtain a significant increase in the production of milk by those cows.
The set aim is achieved by a vertical combined shredding and mixing truck, according to the invention, characterized in that it comprises the characteristics according to the following claims.
Further characteristics and advantages of the invention will become more apparent from the description of two preferred, but not exclusive, embodiments of the invention, illustrated by way of non-limiting example in the accompanying drawings wherein:
Figure 1 is a simplified view of the combined shredding and mixing truck with a vertical screw feeder, with the door of the discharge opening raised in order to allow the interior to be seen;
Figure 2 is a view of a detail of the device applied to the screw feeder visible in Figure 1 ;
Figure 3 is a view of a variation of the device.
With reference to Figures 1 and 2, the reference numeral 1 generally designates the device according to the invention rendered integral with the motorized vertical screw feeder 2 present within the outer enclosure 3 of the truck, visible through the open outlet 3a of the enclosure.
More precisely, the device 1 is, conveniently, arranged at the initial portion of the screw feeder 2 at the base 3b of the housing 3, proximate to the blade 2a applied at the end of said screw feeder 2.
The device 1 comprises a rotor that is mounted idle, for example thanks to the interposition of two bearings at the portions 4a, 4b, on an axle 5 welded to a plate 6, which is applied at the lower surface of the screw feeder 2 and locked in place by way of bolts inserted in holes like 6a.
Advantageously, the rotor protrudes from the edge 2b of the screw feeder 2, and has a horizontal axis.
More specifically, the rotor is positioned, conveniently, laterally to the screw feeder 2.
Preferably, the rotor is positioned at a distance from the outer enclosure 3 of the truck which is substantially comprised between 80 and 160 mm and, more preferably, between 100 and 130 mm.
Between the two portions 4a and 4b which accommodate the bearings, the rotor comprises a disk 7 that carries integral tools that are adapted to come into contact with the product being processed and are constituted, for example, by five equidistant radial blades such as 8, which are conveniently fixed to the disk by way of plates such as 8a, held in position by way of screws such as 8b and 8c.
The arrangement of the device 1 in the initial portion of the screw feeder 2, i.e. in the region where the mixing action determined by the screw feeder 2 is greatest, is such as to confer great efficiency on the device 1 , with the consequent possibility of achieving a high degree of uniformity of the mixed product which becomes particularly soft; in this manner cows are able to considerably increase milk production.
It should be noted that the fact that the rotor is idle makes it possible for it to rotate freely in both directions of rotation about its own axis, as well as to freely vary its velocity, thus avoiding possible sticking, especially in the initial steps of the mixing, when the presence of aggregates in the mass of product to be mixed is most likely.
Also, the possibility still remains of installing a greater number of devices for each screw feeder of the truck.
For example, a plurality of devices 1 can be provided, one of which is integral with the screw feeder 2, at the initial portion of the screw feeder at the base, and the remaining ones at at least one intermediate portion of the screw feeder itself.
Figure 3 represents a variation of the invention in which the tools associated with the rotor, which are adapted to come into contact with the product being processed, are constituted by equidistant and substantially radial vanes such as 9, which are fixed to the disk 7 of the rotor by way of plates such as 9a, which are held in position by screws such as 9b and 9c.
The operation of the truck according to the invention is as follows.
When the outer enclosure 3 has been loaded with the product to be mixed, the screw feeder 2 is actuated in rotation about its own vertical rotation axis.
During the rotation of the screw feeder, the rotor of the device 1 , in contact with the product, begins to rotate freely about its own axis, thus causing the movement of the mass of product which is arranged laterally to the region affected by the operation of the screw feeder 2.
In this manner, the rotor constantly causes a mixing action on the mass of product which would otherwise tend to be compacted against the walls of the outer enclosure 3, without being included in the mixing, as typically occurs in the known art.
In practice, the rotation of the rotor makes the mass of product arranged laterally to the screw feeder 2 fall downward, preventing it, among others, from exiting from the upper edge of the outer enclosure 3, and piles it toward the screw feeder 2, which then pushes it upward, with the result that all of the mass of product loaded in the enclosure 3 is in motion during the rotation of the screw feeder 2.
It should be noted that if the rotor should encounter aggregates of the product to be mixed which could cause its sticking, it, being idle, instead of halting, begins to rotate in the other direction or to vary its velocity, thus continuing in its action on the mass of product.
In practice it has been found that the invention is capable of fully achieving the set aim and, in particular, it must be emphasized that, from tests carried out, it is evident that, with the use of the truck according to the invention, it is possible to obtain surprising values of concentration of some components or of other characteristics in the mixed product.
For example, experimental tests conducted both with and without the mixer truck according to the invention have shown that some parameters of the product obtained are significantly influenced positively by the use of the truck according to the invention.
These parameters include the homogeneity of particle size for Screen 8mm and Pan, Dry Matter, Ash, Protein, NDF, Copper, Sulphur and Phosphorous. For all these parameters, the variability in the composition between the product samples selected during the tests was higher without the use of the truck according to the invention, with the mixture produced using the truck according to the invention being more homogeneous.
In conclusion, the experimental tests have shown that the truck according to the invention makes it possible to increase the homogeneity of feedstuffs constituted by a mixture of solid foods. The invention, thus conceived, is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims: thus, for example, the idle rotor can be rendered integral with the at least one screw feeder by way of the interposition of a bracket, so as to present a vertical axis, or an axis inclined at any angle.
In practice, all the details may be substituted by other, technically equivalent elements.
The content of Italian patent application no. VR2012A000102, the priority of which is claimed in the present application, is incorporated as a reference.
Where the technical features mentioned in any claim are followed by reference numerals and/or signs, those reference numerals and/or signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference numerals and/or signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference numerals and/or signs.

Claims

1. A vertical combined shredding and mixing truck, adapted to shred fibrous products such as hay or straw gathered in cylindrical or prism- shaped bales and to mix them with ensiled and farinaceous products to provide the mechanized feeding of dairy cows and fattening cows, comprising, within an outer enclosure (3) which extends from a base (3b) and is open at the top, at least one vertical motorized screw feeder (2), which is provided with applied blades (2a) and an outlet (3a) for discharging the mixed product, characterized in that it comprises at least one device (1) which comprises an idle rotor which is provided with tools adapted to come into contact with the product being processed and is integral with the at least one screw feeder (2), protruding from the outer edge (2b) of said screw feeder (2).
2. The truck according to claim 1 , characterized in that it comprises a device (1) which is integral with the at least one screw feeder (2) at the initial portion at the base of said screw feeder.
3. The truck according to claim 1 , characterized in that it comprises a plurality of devices (1), one of which is integral with the at least one screw feeder (2) at the initial portion at the base, and the remaining ones at at least one intermediate portion of said screw feeder (2).
4. The truck according to one or more of the preceding claims, characterized in that the idle rotor is integral with the at least one screw feeder (2), having a horizontal axis.
5. The truck according to one or more of the preceding claims, characterized in that the idle rotor is integral with the at least one screw feeder (2), having an axis which is inclined between the horizontal arrangement and the vertical arrangement.
6. The truck according to claim 1 , characterized in that the tools adapted to come into contact with the product being processed are constituted by a plurality of equidistant and substantially radial blades (8).
7. The truck according to claim 1 , characterized in that the tools adapted to come into contact with the product being processed are constituted by equidistant and substantially radial vanes (9).
PCT/IB2013/054041 2012-05-18 2013-05-17 Vertical combined shredding and mixing truck Ceased WO2013171717A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14/401,919 US9642335B2 (en) 2012-05-18 2013-05-17 Vertical combined shredding and mixing truck
EP13731951.3A EP2849558B1 (en) 2012-05-18 2013-05-17 Vertical combined shredding and mixing truck

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000102A ITVR20120102A1 (en) 2012-05-18 2012-05-18 VERTICAL TRINCIAMISCELATORE
ITVR2012A000102 2012-05-18

Publications (1)

Publication Number Publication Date
WO2013171717A1 true WO2013171717A1 (en) 2013-11-21

Family

ID=46466797

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/054041 Ceased WO2013171717A1 (en) 2012-05-18 2013-05-17 Vertical combined shredding and mixing truck

Country Status (4)

Country Link
US (1) US9642335B2 (en)
EP (1) EP2849558B1 (en)
IT (1) ITVR20120102A1 (en)
WO (1) WO2013171717A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2663987C1 (en) * 2017-09-18 2018-08-14 федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" Hand tool for dividing a roll of hay into parts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1224859A1 (en) * 2001-01-17 2002-07-24 B. Strautmann & Söhne GmbH & Co. Mixing apparatus with cutting blades mounted on a central screw
DE202004011784U1 (en) * 2004-07-27 2004-09-23 Pohlmann, Reinhard Mixing system for fodder mixing wagon comprises conical screw mounted on vertical tubular shaft, connecting arm being mounted between this and auxiliary mixer whose blades are turned as arm turns
EP2319299A2 (en) * 2009-11-06 2011-05-11 Cornelis Hendricus Liet Mixing device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325106A (en) * 1965-05-06 1967-06-13 Deere & Co Material reducing machine
US4432499A (en) * 1980-12-15 1984-02-21 Owatonna Manufacturing Company, Inc. Portable feed grinder-mixer
US4509862A (en) * 1983-08-29 1985-04-09 Feedmobile, Inc. Feed processing system
SE455271B (en) * 1986-12-10 1988-07-04 Franz Wroblewski DEVICE FOR DIVISION OF GOODS
IT1254082B (en) * 1991-08-12 1995-09-07 Tiziano Faccia MACHINE FOR THE PREPARATION OF LITTERS FOR CATTLE
US5803375A (en) * 1996-01-26 1998-09-08 Alteen Distributors Ltd. Vertical mixer
US5647665A (en) * 1996-04-18 1997-07-15 Schuler Manufacturing & Equipment Co., Inc. Vertical feed mixer with flighting plows
ITPD20010228A1 (en) * 2001-09-28 2003-03-28 Tiziano Faccia PERFECTED WAGON FOR SHREDDING AND MIXING OF ZOOTECHNICAL USE PRODUCTS.
WO2003103820A1 (en) * 2002-06-04 2003-12-18 Christopher Albright Mixer with dissimilar augers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1224859A1 (en) * 2001-01-17 2002-07-24 B. Strautmann & Söhne GmbH & Co. Mixing apparatus with cutting blades mounted on a central screw
DE202004011784U1 (en) * 2004-07-27 2004-09-23 Pohlmann, Reinhard Mixing system for fodder mixing wagon comprises conical screw mounted on vertical tubular shaft, connecting arm being mounted between this and auxiliary mixer whose blades are turned as arm turns
EP2319299A2 (en) * 2009-11-06 2011-05-11 Cornelis Hendricus Liet Mixing device

Also Published As

Publication number Publication date
EP2849558A1 (en) 2015-03-25
US20150122926A1 (en) 2015-05-07
EP2849558B1 (en) 2018-08-01
US9642335B2 (en) 2017-05-09
ITVR20120102A1 (en) 2013-11-19

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