EP0298228A2 - Hachoir entrainé par un moteur pour déchets de jardins - Google Patents

Hachoir entrainé par un moteur pour déchets de jardins Download PDF

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Publication number
EP0298228A2
EP0298228A2 EP88108088A EP88108088A EP0298228A2 EP 0298228 A2 EP0298228 A2 EP 0298228A2 EP 88108088 A EP88108088 A EP 88108088A EP 88108088 A EP88108088 A EP 88108088A EP 0298228 A2 EP0298228 A2 EP 0298228A2
Authority
EP
European Patent Office
Prior art keywords
knives
knife
shredder according
garden shredder
cutting edges
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.)
Granted
Application number
EP88108088A
Other languages
German (de)
English (en)
Other versions
EP0298228B1 (fr
EP0298228A3 (en
Inventor
Günter Hilgarth
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.)
Crones and Co GmbH
Original Assignee
Crones and Co GmbH
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 Crones and Co GmbH filed Critical Crones and Co GmbH
Priority to AT88108088T priority Critical patent/ATE74540T1/de
Publication of EP0298228A2 publication Critical patent/EP0298228A2/fr
Publication of EP0298228A3 publication Critical patent/EP0298228A3/de
Application granted granted Critical
Publication of EP0298228B1 publication Critical patent/EP0298228B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/083—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with a disc rotor having generally radially extending slots or openings bordered with cutting knives
    • 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
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/12—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged below container
    • 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
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B02C18/2291—Feed chute arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
    • B02C2201/066—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage for garden waste

Definitions

  • the invention relates to a motor-driven garden shredder, with a knife housing arranged on a frame supporting the drive motor and a feed hopper and surrounding a lower ejector chamber, in which there is a knife carrier disc which is to be driven around a substantially vertical axis and which has radially extending through slots.
  • a knife carrier disc which is to be driven around a substantially vertical axis and which has radially extending through slots.
  • flat knives arranged in the manner of planer knives and centrally arranged, upright pre-comminution knives are provided, wherein an abutment surface is further provided in the knife housing, which at the bottom acts in a flat, lower lower cutting edge interacting with the flat knives and on the inside into an inner, obliquely upward, interacting with the pre-comminution knives Shear bar runs out.
  • Garden shredders of the above type are known, for example, from DE-OS 29 34 792. They are usually provided with V-shaped pre-shredding knives and an approximately triangularly contoured abutment plate located between their orbit and the flat knife, which is fastened to the knife housing wall in an essentially upright position.
  • the underside of this abutment plate acts as a lower shear bar with the flat knives and its inside, which runs obliquely from the outside inwards downwards, acts as an inner shear bar with the V-shaped pre-shredding knives.
  • Another abutment is formed by a branch feed tube which is guided laterally obliquely downwards through the wall of the cylindrical feed container, the obliquely cut lower end of which cooperates with the flat knives as the lower shear bar and whose obliquely rounded upper side reaches the orbit of the V-shaped pre-shredding knife.
  • this device still has a number of shortcomings: So there must be some defects the waste, which is easier to shred, is fed separately from the heavier, strong branch material and thus also pre-sorted accordingly. Furthermore, the knife carrier disk must be driven at a relatively high speed. This not only requires a correspondingly high motor drive power, but also a high level of noise and rapid wear on the knife edges, which is perceived as very annoying in most known garden shredders. Start-up problems also often occur, particularly when the knife mechanism is blocked or blocked by branch material that has remained unreduced.
  • the invention is therefore based on the object of providing a garden shredder of the type mentioned at the outset which does not have the abovementioned shortcomings, rather has a high shredding power and manages with low drive energy, works extremely quietly and does not require separate supply of waste which can be comminuted differently, the latter moves in automatically and calmly and is also comparatively insensitive in its tarnishing properties.
  • abutment surface is inclined at an acute angle to the orbit of the flat knives and its lower shear bar forms the tangent to a circle which is concentric with the circumferential axis of the knife carrier disc and which has a larger diameter than that of
  • the cutting edges of the circumferential flat knives have a tangentially enclosed enveloping circle, and that the circumferential cutting edges of the pre-comminution knives continue to form an upwardly tapering frustoconical enveloping surface and, with a top-down cut, run past the inner shearbar that comes close to the conical enveloping surface.
  • a garden shredder equipped with such a knife mechanism and counter-cutting edges interacting therewith can be driven at an extraordinarily low speed and therefore correspondingly low noise with a comparatively low drive power.
  • the chopped material that is fed in unsorted via the feed hopper is sorted by the knife mechanism, as it were, in such a way that the knives, which are larger or thicker in diameter, are pressed radially outwards by the flat knives and shredded into planes in the form of disks, while the thinner knot is and branch material from the revolving flat knives in cooperation with the lower counter-cutting edges of the abutment surface is pressed inwards to the pre-shredding knives, where it is shredded or shredded more quickly. In this way it is ensured that the comminution or.
  • Cutting length of the unsorted to be given up Chopped material is, as it were, in inverse proportion to its thickness or thickness, whereby even comparatively thick branches up to 50 mm in diameter and more can be neatly cut off in comparatively thin slices.
  • the thinner branches and twigs are conveyed to the center and fed to the pre-shredding knives there, which in turn cause the chipping material to be cut or shredded accordingly.
  • the appropriate inclined arrangement of the abutment surfaces in relation to the flat knives and the pre-shredding knives means that the chopping material is largely automatically drawn into the knife mechanism and is practically not ejected at all.
  • the abutment surface forms part of an abutment wall which is installed obliquely in the knife housing with respect to the feed hopper and the other part of which is one of the first abutment surface by a the gate-like opening spanning the pre-comminution knife forms a separate second abutment surface which, like the first, is provided with a lower and inner counter-cutting edge, the two lower counter-cutting edges lying in the knife housing half facing away from the feed hopper and the two inner counter-cutting edges immediately adjoining them forming the side gate opening edges .
  • the drive motor and the drive gear leading to the knife carrier disk can be designed so that the knife carrier disk with a under 300rpm. lying speed can be driven. This makes it possible to work extremely quietly while at the same time protecting the knife mechanism to a great extent. Blockages in the knife mechanism or in the ejector chamber practically do not occur. There are also no start-up problems whatsoever, even with stronger branch material already present in the feed hopper.
  • the garden shredder shown in FIGS. 1 and 2 has a frame 2 which contains an electrical or internal combustion engine drive motor (not shown) and a lower ejector space 1, which is equipped at one end with casters 3.
  • a frame 2 which contains an electrical or internal combustion engine drive motor (not shown) and a lower ejector space 1, which is equipped at one end with casters 3.
  • On the frame is provided with a lower flange 4 ' Feed hopper 4 attached through which the garden waste material, such as strong but also thinner branches and twigs and the like. In a non-pre-sorted form, they are jointly abandoned and fed to the knife housing 5 surrounding the knife mechanism.
  • the feed hopper 4 is mounted on the frame 2 so that it can be folded down about a horizontal hinge axis 6 facing it.
  • two essentially the hinge axis 6 forming T-shaped hinge tabs 2 ' are present at the upper edge of the frame 2, which are undercut like a fork from the lateral projections 4' on the edge flange 4 'provided at the lower end of the feed funnel.
  • three insertion elements in the form of centering plates 7 are provided on the edge flange 4 'of the feed hopper 4, which are inserted into the long holes 8 present on the top of the frame, correspondingly long, but kept wider.
  • the plug-in elements 7 with the openings 8 ensure that they locate or center themselves when the feed hopper is put on or closed.
  • the folding hinge is also able to absorb comparatively large forces and not only enables the feed hopper 4 to be folded down, but also to be easily detached, which advantageously consists of sheet metal in its lower part and suitable plastic in the upper part.
  • FIG. 3 to 5 show, in the lower part of the knife housing 5, the knife carrier disk 9 is accommodated, which is attached to the upper end of the upright drive shaft 10 and by the drive motor and a correspondingly designed gearbox with a comparatively low speed of approximately 250 U. / min. be driven all round can.
  • the knife carrier disk 9 is provided with radially extending through slots 11 and flat knives 12 arranged above it in the manner of a plane knife.
  • a base plate 13 of a square outline is fastened in the center of the knife carrier disk 9, around which the four flat knives 12 are grouped in a cross shape. Your cutting edges 12 'run essentially in the extension of the associated side edges 13' of the base plate 13.
  • the pre-comminution knives in the form of two knife plates 14 are fastened on the base plate 13. They are arranged inclined to each other like a roof. Their cutting edges 14 'located in the direction of rotation are offset from one another in vertical planes running through the opposite edges 13' of the base plate 13.
  • the cutting edges 14 'of the pre-comminuting knife plates 14 describe an upwardly tapering frustoconical envelope surface 16, which is indicated by dash-dotted lines in FIG. 3.
  • the two pre-comminution knife plates 14 extend only over half the side length of the square base plate 9 and are correspondingly offset from one another.
  • an inclined abutment wall In the knife housing 5 or in the lower region of the feed hopper 4, an inclined abutment wall, generally designated 17, is installed opposite it. In its center, this has a gate-like opening 18 which overlaps the pre-comminution knives 14 and two abutment surfaces located on both sides thereof, the first generally designated 19 and the second 20.
  • the first abutment surface 19 consists of two partial surfaces 19 ', 19 ⁇ , which are bent towards each other around the bending edge 19 ′′′.
  • the abutment partial surface 19 ' which is less inclined with respect to the orbit of the flat knives 12, has on its underside a horizontally running lower shear bar 21 which interacts with the circumferential flat knives 12, while the abutment partial surface 19' on the inside has an obliquely upwardly extending inner shear bar 22 which with the Pre-shredding knives 14 cooperates.
  • the second abutment surface 20 is also provided on the inside with an inner shear bar 23 and on the underside with a lower shear bar 24 which cooperate with the pre-comminution knives 14 and the flat knives 12.
  • the two inner counter cutting edges 22, 23 form the lateral edges of the gate opening 18 in the abutment wall 17. Like the lower counter cutting edges 21, 24, they lie in the knife housing half facing away from the feed hopper 4, that is to say in the housing half on the left in FIGS. 3 and 4 .
  • the lower shearbar 21 of the first abutment surface 19 is arranged so that it forms a tangent to the dash-dot circle K1, which has a larger radius R1 than the smaller, dash-dot circle K2 with the Radius R2.
  • This circle K2 is the closed circle of the blades 12 'of the flat knife 12 in its orbit.
  • first shearbar 21 which cooperates with the flat knives 12
  • the above-described design or arrangement of the first shearbar 21, which cooperates with the flat knives 12, is so important for the invention because, with each pulling cut, the stronger knot material 25 is conveyed radially outward and is planed or machined in thin slices, whereas thinner ones Branch material and branches 26 are conveyed inwards and fed to the pre-comminution knives 14 rotating here, which effectively pre-comminute or tear them. This results in an automatic separation of the chopped material that has been fed in with regard to its heavier and lighter material Crushability with correspondingly improved efficiency. It is also important that - as Fig.
  • FIG. 7 shows - the lower abutment 21 carrying the first abutment surface 19 inclined to the orbit of the cutting edges 12 'of the flat knife 12 at an acute cutting angle ⁇ , whereby the automatic drawing in of the chopping material and its previously described Sorting during shredding is favored accordingly.
  • the flat knives 12 are inclined rearward on their upper side so that they form a clearance angle ⁇ .
  • the obliquely upward and a truncated cone-describing cutting edges 14 'of the pre-shredding knife 14 run past the inner counter-cutters 22, 23 so that there is a pull from top to bottom, which makes the given easier to shred Waste is effectively drawn in and pre-shredded.
  • the material pre-shredded on the inner shear bar 22, provided that it does not subsequently reach the ejector chamber 1 via the through-slots 11, can either be shredded again on the second inner shear bar 23 or further shredded on the second lower shear bar 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP88108088A 1987-07-07 1988-05-20 Hachoir entrainé par un moteur pour déchets de jardins Expired - Lifetime EP0298228B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88108088T ATE74540T1 (de) 1987-07-07 1988-05-20 Motorisch angetriebener gartenabfallhaecksler.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873722339 DE3722339A1 (de) 1987-07-07 1987-07-07 Motorisch angetriebener gartenabfallhaecksler
DE3722339 1987-07-07

Publications (3)

Publication Number Publication Date
EP0298228A2 true EP0298228A2 (fr) 1989-01-11
EP0298228A3 EP0298228A3 (en) 1990-07-25
EP0298228B1 EP0298228B1 (fr) 1992-04-08

Family

ID=6331027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108088A Expired - Lifetime EP0298228B1 (fr) 1987-07-07 1988-05-20 Hachoir entrainé par un moteur pour déchets de jardins

Country Status (5)

Country Link
US (1) US4860961A (fr)
EP (1) EP0298228B1 (fr)
AT (1) ATE74540T1 (fr)
DE (2) DE3722339A1 (fr)
ES (1) ES2030459T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142593A1 (de) * 1991-12-21 1993-06-24 Gloria Werke Schulte H Kg Haecksler mit einem messerteller-aufsatz
EP1724024A4 (fr) * 2005-03-14 2007-05-09 Takeuchi Mfg Pulverisateur

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE114402T1 (de) * 1989-09-02 1994-12-15 Sabo Maschf Häcksler zum zerkleinern von gartenabfällen mit einem schneidwerk.
US5236135A (en) * 1991-05-23 1993-08-17 Ecomed, Inc. Medical waste treatment system
US5240187A (en) * 1991-05-23 1993-08-31 Ecomed, Inc. Medical waste treatment device and method
US5516052A (en) * 1991-05-23 1996-05-14 Ecomed, Inc. Medical waste collection and treatment system
USD343175S (en) 1991-07-26 1994-01-11 Simplicity Manufacturing, Inc. Yard waste processor
USD357259S (en) 1991-09-10 1995-04-11 Garden Way Incorporated Chipper/shredder with standard vacuum head
USD356319S (en) 1991-09-10 1995-03-14 Garden Way Incorporated Chipper/shredder with rake-on vacuum head
USD345983S (en) 1991-09-10 1994-04-12 Garden Way Incorporated Chipper/shredder with hose attachment
USD356801S (en) 1991-09-10 1995-03-28 Bold Alfred J Chipper/shredder
US5358189A (en) * 1993-09-29 1994-10-25 Aldo Vandermolen Processor for chipping and shredding vegetation
US5366168A (en) * 1993-10-04 1994-11-22 Dymarkowski Paul F Yard waste liquefier
USD358399S (en) 1994-01-09 1995-05-16 Tiedeman David A Chipper/shredder
US5534162A (en) * 1994-03-11 1996-07-09 Ecomed, Inc. Method for disposal of biological waste
USD365000S (en) 1994-11-18 1995-12-12 Chung Lee H Tree branch and leaf cutter
US5927622A (en) * 1997-11-07 1999-07-27 Eurohansa, Inc. Waste grinder and bit therefore
USD457532S1 (en) 2001-03-28 2002-05-21 Jenn Feng Industrial Co., Ltd. Milling machine for leaves and branch
DE20320044U1 (de) * 2003-12-24 2004-03-04 Viking Gmbh Messerscheibe mit Reißzähnen für einen Häcksler
USD514128S1 (en) * 2004-12-27 2006-01-31 Hsin-Chih Chung Lee Tree branch and leaf cutter
US7431231B1 (en) 2006-12-06 2008-10-07 Tong Myong Saiki Portable shredding device
USD792476S1 (en) * 2017-01-20 2017-07-18 David J. Nutting Weed remover
USD939588S1 (en) * 2020-07-08 2021-12-28 Wensheng Xu Wood chipper

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934792C2 (de) * 1979-08-29 1981-12-03 Crones & Co oHG, Kaltpreßwerk Ansbach, 8800 Ansbach Motorisch angetriebenes Zerkleinerungsgerät für Abfälle, insbesondere Gartenabfälle.
DE8030435U1 (de) * 1980-11-14 1981-05-14 Crones & Co oHG, Kaltpreßwerk Ansbach, 8800 Ansbach Umlaufend antreibbare messertraegerscheibe, insbesondere fuer gartenabfall-zerkleinerungsgeraete
DE3219183A1 (de) * 1982-05-21 1983-11-24 Gloria-Werke H. Schulte-Frankenfeld Gmbh & Co, 4724 Wadersloh Haeckseler fuer gartenabfaelle und dergleichen
US4595148A (en) * 1983-10-03 1986-06-17 Mcculloch Corporation Machine for comminuting waste material
DE3339312A1 (de) * 1983-10-29 1985-05-09 Gloria-Werke H. Schulte-Frankenfeld Gmbh & Co, 4724 Wadersloh Gartenhaecksler mit einem messergehaeuse
DE3503904A1 (de) * 1984-03-31 1985-10-10 Crones & Co GmbH, 8800 Ansbach Gartenabfall-zerkleinerungsgeraet mit vorzerkleinerungsfluegeln
DE8524673U1 (de) * 1985-08-29 1985-10-03 Gloria-Werke H. Schulte-Frankenfeld Gmbh & Co, 4724 Wadersloh Gartenhäcksler mit Auswurfvorrichtung
DE3621418A1 (de) * 1986-06-26 1988-01-14 Lescha Maschf Gmbh Vorrichtung zum haeckseln von gartenabfaellen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142593A1 (de) * 1991-12-21 1993-06-24 Gloria Werke Schulte H Kg Haecksler mit einem messerteller-aufsatz
EP1724024A4 (fr) * 2005-03-14 2007-05-09 Takeuchi Mfg Pulverisateur

Also Published As

Publication number Publication date
DE3869844D1 (de) 1992-05-14
ES2030459T3 (es) 1992-11-01
DE3722339A1 (de) 1989-01-19
US4860961A (en) 1989-08-29
EP0298228B1 (fr) 1992-04-08
EP0298228A3 (en) 1990-07-25
ATE74540T1 (de) 1992-04-15

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