EP3569316A1 - Accélérateur de projection d'une machine traitant le bois - Google Patents

Accélérateur de projection d'une machine traitant le bois Download PDF

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Publication number
EP3569316A1
EP3569316A1 EP19173126.4A EP19173126A EP3569316A1 EP 3569316 A1 EP3569316 A1 EP 3569316A1 EP 19173126 A EP19173126 A EP 19173126A EP 3569316 A1 EP3569316 A1 EP 3569316A1
Authority
EP
European Patent Office
Prior art keywords
rotor
accelerator
throwing
wood chips
housing
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.)
Withdrawn
Application number
EP19173126.4A
Other languages
German (de)
English (en)
Inventor
Franz Bachmaier
Thomas Höglmeier
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.)
Albach Maschinenbau GmbH
Original Assignee
Albach Maschinenbau 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 Albach Maschinenbau GmbH filed Critical Albach Maschinenbau GmbH
Publication of EP3569316A1 publication Critical patent/EP3569316A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16Details
    • B02C18/22Feed or discharge means
    • B02C18/2216Discharge means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/002Transporting devices for wood or chips

Definitions

  • the present invention relates to a throwing accelerator, also called throwing fan or woodchip fan, a wood-processing machine for producing wood chips / wood chips with a rotor and a housing, such as according to the preamble of claim 1.
  • a throwing accelerator according to the invention in a mobile wood chipper used.
  • Generic throwing accelerators are arranged between a chopping unit and a casting tower to convey chopped / shredded / carved / shredded material, so-called wood chips, to a filling store / car.
  • Wood chips can be produced by means of the Ralphaggregats basically from a variety of materials, such as plastic chips for recycling plastic / plastic material or metal chippings for recycling scrap metal.
  • the preferred application is the use of wood chips as wood chippings / chips, which serves / serve as fuel for heating systems or as a base material for pressboard.
  • a generic throwing accelerator is needed in order to transport the freshly chopped wood chips in a short time from the chopping unit to a central collecting point, such as a filling.
  • a generic throwing accelerator is needed. This is fed, for example by one or more screw conveyors, freshly chopped wood chips, which in turn is accelerated by a rotor of the throwing accelerator so that it is conveyed along a trajectory whose course is determined inter alia by the litter tower in the filling.
  • the kinetic energy, which is to be supplied to the wood chips, so that it can be transported along the corresponding trajectory is transmitted via throwing blades / driving blades of a rotor on the wood chips.
  • the wood chips are the throw accelerator in generic applications substantially transversely, approximately perpendicular, carried to the direction of rotation of the rotor and leaves it substantially along the tangential direction of the rotor.
  • the speed between the supplied wood chips and the discharged chips a high gradient. Accordingly, occurs in the throw accelerator on a high relative movement and thus relative friction between the wood chips themselves and the throwing accelerator, which involves high demands on an efficient design of the throwing accelerator.
  • the state of the art has been further developed, for example in order to provide more efficient and at the same time space-optimized chopping units and throwing accelerators.
  • the chips commonly used today the wood chips from a direction that is transverse to the direction of rotation of the rotor of the throwing accelerator supplied.
  • Rotors are usually formed in the form of paddle wheel blades. In order to increase the life of the throwing blades, they are provided on their side surfaces approximately with webs, which are intended to counteract the material wear of the throwing blades.
  • a disadvantage of the prior art is that for a failure of the throwing accelerator, for example due to damming of wood chips, a time-consuming removal / swinging the throwing accelerator is necessary. In this removal / swinging, for example, the position of the casting tower is changed. In operation, this may mean that you need to re-park the wood chipper is what a maintenance of the throwing accelerator linked to a high operating failure.
  • the object of the present invention in view of this prior art, is to remedy or at least mitigate the disadvantages of the prior art, and more particularly to disclose a throwing accelerator which provides improved accessibility from the outside. This means increasing the accessibility for one operator of the machine, in order to perform a maintenance time and more efficient work without having to rebuild the entire machine.
  • the invention achieves a solution of the above objects by means of a throwing accelerator having the features of claim 1.
  • Advantageous embodiments of the throwing accelerator are the subject of the respective subclaims.
  • the invention is therefore a throw accelerator for the transport of wood chips.
  • the throwing accelerator has a rotor that is prepared to accelerate a feed stream of wood chips into a discharge stream, and a housing housing the rotor, which can be coupled to a casting tower carrying the discharge stream.
  • the housing has a fixed space fixed portion and a pivotally mounted to this folding portion to the Rotor interior via a pivoting of the folding section to make accessible from the outside.
  • a throwing blade rotates about the axis of rotation of the rotor.
  • the supply current runs transversely to the direction of rotation, that is to say parallel to the axis of rotation of the rotor.
  • a thrower blade has a side farther away from the feed passage and one closer to the feed passage. The farther away is considered within the meaning of the invention as the side facing away from the feed stream, while the other, closer than the feed stream facing side is considered.
  • the feed stream of wood chips which is conveyed into the rotor interior, generates a woodchip carpet in a radially outer edge region of the rotor, that is to say in the region which is close to a radial housing wall, that is to say preferably a quasi-stationary wood chips deposit, which chip wood carpet co-rotated with the rotor wall plate and the rotor wall ring.
  • This means that the supplied wood chips fall into such a pocket formed by the rotor, that it has a relative friction component only to the radially outer housing wall. Due to the rotor wall disc and the rotor wall ring, the carpet is thus conveyed smoothly on the side, which considerably reduces the friction within the throwing accelerator.
  • the throwing accelerator according to the invention is further advantageously such that the boundary surface of the chips, which move in the radial direction, are configured by the housing, while the boundary surface of the chips, which move in the axial direction, are formed on the rotor side.
  • the housing forms in the region of the feed passage a recess into which engages the rotor wall ring such that the rotor wall ring to the housing inner wall is substantially flush.
  • the space occupied by the rotor in the housing, along the Rotational axis of the rotor minimized.
  • a corresponding undercut engagement of the rotor wall ring in the housing that is, a flush transition between the housing inner wall and the rotor wall ring, the probability that a woodchip between the housing inner wall and the rotor wall ring at least temporarily clamped and thus increases the relative friction.
  • the throwing blades are connected to the rotor wall disk on the one hand via a radially inner throwing blade receptacle and on the other hand via a radially outer throwing blade receptacle.
  • a radially inner throwing blade receptacle and on the other hand via a radially outer throwing blade receptacle.
  • the throwing blades are connected by means of a material-locking, preferably a welded connection, and / or via a frictional connection, preferably a screw connection, with the rotor wall pane.
  • the rotor wall plate passes the force on the throwing blades for conveying the wood chips in accordance with the functional principle according to the invention.
  • the rotor and thus the rotor wall disk rotate in the region of approximately 600 revolutions per minute and have a diameter of preferably more than one meter.
  • a robust holder which is composed in the present case of a screw and a welded joint, implemented to meet the high demands on the strength.
  • the two-stage nature of the connection also increases the certainty that in case of failure of one, such as the integral connection mechanism, nor the other, in this case the non-positive connection mechanism, prevents the immediate failure of the system.
  • the throwing blades which are preferably distributed uniformly in the circumferential direction on the rotor wall disk, are in a preferred embodiment too a part formed as a carrier throwing vanes, which have radially inside a support portion and formed to another part as Hilfsschschaufeln, which have a smaller conveying surface than the carrier throwing vanes and transmit less force from the rotor wall disc on the wood chips.
  • the design and arrangement of the throwing blades can be flexibly adapted to the particular field of application, depending on what is to be transmitted for forces.
  • the carrier throwing vanes and auxiliary throwing vanes it is advantageously possible for them to be alternately / alternately arranged in the circumferential direction.
  • a uniform wood chips stream can be realized and a flexible adaptation of the throwing blade arrangement to different fields of application / performance classes is possible.
  • the rotor wall ring in addition to a slot which is prepared to promote between the rotor wall ring and the housing depositing wood chips back to a throwing blade.
  • a self-cleaning of the rotor according to the invention is realized, which further reduces the necessary maintenance intervals.
  • the throwing accelerator on a rotor with throwing blades which is prepared to accelerate a directed transversely to the rotational direction of the rotor feed stream of wood chips in a tangential to the rotational direction of the rotor directed discharge stream of wood chips.
  • a throwing accelerator also has a housing housing the rotor.
  • the housing has a supply passage enabling the supply flow and a purge passage enabling the purge flow.
  • the housing has a radial outer wall, which limits the wood chips in the radially outer direction and thus only allows the discharge flow through the discharge passage.
  • the housing is such that a radial step, that is to say in the radial direction, is formed between the radial outer wall and the feed passage, which causes the chips to fall down in the feed stream whose entry into the rotor causes.
  • a radial step that is to say in the radial direction
  • the feed passage which causes the chips to fall down in the feed stream whose entry into the rotor causes.
  • the rotor is prepared to transport the wood chips centrifugally driven in a radially outer edge region, so that in this outer edge region of the rotor forms a kind of "woodchip carpet".
  • the woodchip carpet in this case reaches approximately the height of the rotor wall ring described above.
  • the friction of the wood chips in the feed stream is thus drastically reduced, since the wood chips stream is advantageously in contact with the rotor wall disk on one side, on the other side with the rotor wall ring and on the radially outer side with the wood chip carpet.
  • a step is formed between the radially outer edge portion, that is, the wood chip carpet, and a lower feed passage box edge, that is, the lower edge of the feed passage.
  • the special feature is created by the inventive lateral arrangement of the throwing blades on the rotor wall plate that the throwing blades are not necessarily reliant on a recording at its radially inner portion, which allows a corresponding recess.
  • the recess which is advantageously formed on a majority or even on all throwing blades, further minimizes the likelihood of chipping wood chips between the rotor and the housing. Such jamming, the pressure peaks in the hydraulics and audible audible shocks and thus causes a high material load and a power dip, it should be avoided if possible.
  • the geometric peculiarity of the recess of the respective throwing blades provides a remedy.
  • a further advantageous embodiment is characterized in that within the housing a separating blade / a separating knife / a separating edge is arranged, which is prepared to wood chips, which settles between the rotor and the housing, which is therefore in danger of being trapped and thus to cause the above-mentioned disadvantages, to cut, to prevent jamming of the wood chips.
  • the separating edge thus realizes a protective mechanism which additionally prevents trapping of wood chips in addition to the radial stage according to the invention and the recess in the throwing blades.
  • the cutting blade instead of a breaking off of the wood chips, which leads to setbacks in the rotor drive, a smooth cutting, which is not noticeable in hydraulic shocks, or in acoustic beats.
  • the woodchip is passed along its path between the chopping unit and the logging tower at different housing edges of the throw accelerator housing.
  • one of these housing edges is formed as a separating blade or has a separating blade in order to cut wood chips, which run the risk of becoming trapped between the rotor and the stator.
  • a protective mechanism is realized, which cuts, even if jamming could occur, the corresponding chips and thus lowers a Aufstaurisiko / Aufstaugefahr in the rotor due to too many wood chips. Instead of trapping thus takes place by means of the cutting blade cutting off the affected chips.
  • the separating blade is advantageously designed in the region of the feed passage. So be right at the entrance of the housing of the rotor, that is at the point where the Aufstaugefahr is the largest, wood chips further crushed.
  • the separating blade is designed integrally with the housing. Thus, the separating blade is formed directly with the assembly of the housing, without an additional step is necessary.
  • the separation blade when the separation blade is disposed in a region of the supply passage which is the rearmost supply passage region as viewed in the rotational direction of the rotor, efficient cutting by the separation blade is achieved.
  • the arrangement of the separating blade is such that wood chips are cut / cut / chopped in the area between the feed passage and the side edge of the throwing blades facing the feed passage on the separating blade in order to avoid pinching of this chip material. So that area is perpendicular to the direction of rotation of the wood chips and thus the wood chips.
  • the blade has a curved, preferably concave / arcuate, shape in order to form an enlarged compared to a straight blade attack surface for the wood chips. Furthermore, a corresponding blade shape allows an enlargement of the supply passage, which in addition to increased cutting quality by the longer blade shape additionally the result of the invention Aufstaurisikosenkung consequence. A concave shaped blade is still easily insertable into a corner of the delivery passage.
  • an immersion blade is arranged inside the housing, which is prepared to increase the smoothness of the rotor, since it efficiently cuts those chips which are in the housing between the housing and the rotor when the rotor re-immerses. separates.
  • the dip blade also aims to protect the rotor from pressure surges.
  • a two-stage mechanism of overload prevention consisting of the separating blade and the dipping blade, is achieved. While the separating blade is formed in the housing in the entrance area, the immersion blade is formed approximately in the area of a housing discharge shaft.
  • the separating blade and the dipping blade are seen in the direction of rotation in one Angle between 90 ° and 270 °, preferably about 180 °, arranged to each other. For example, part of the wood chips that come into contact with the dip blade are on their way to the casting tower, while another part along the direction of rotation covers another revolution in the throwing accelerator, so possibly (again) coming in contact with the cutting blade.
  • the two-stage safety mechanism / overload prevention mechanism realized by the and the dip blade increases the smoothness of the rotor both mechanically and acoustically.
  • the immersion blade is additionally or alternatively formed integrally with the housing, it does not cause any additional expenditure in the assembly of the housing, which has a positive effect on the economic efficiency. Likewise, the immersion blade is placed to save space in order not to reduce the existing volume for the wood chips stream and thus not affect the discharge flow in its speed.
  • the immersion blade is located exactly in the region of the discharge passage, which, viewed in the direction of rotation of the rotor, represents the rearmost discharge passage region, such that wood chips in the region between the discharge passage and the radial blade end region or preferably the radial blade end edge on the Dipping blade is cut off to avoid jamming this chopped wood.
  • the execution shaft of the housing is shaped such that it discharges the wood chips stream substantially tangentially to the direction of rotation. Only an arrangement in the rearmost discharge passage area in this case reaches a veritable impact between the wood chips and the dipping blade, without swirling the superordinate wood chips stream efficiency-reducing.
  • a throwing accelerator according to the invention has a rotor which is prepared to accelerate a feed stream of wood chips into a removal stream, as it already does in the basic mode of operation is known from the above embodiments. Furthermore, the throwing accelerator on a housing housing the rotor, which can be coupled with a discharge tower leading to the litter, which in turn leads the accelerated wood chips in its trajectory or at least influenced.
  • the housing prefferably has a fixed portion fixed in space and a hinged section pivotally mounted thereon in order to make the rotor interior accessible from the outside via a pivoting of the hinged section.
  • the housing is configured substantially in two parts in such a way that one part is firmly anchored in its surroundings, preferably non-positively and / or positively, while another part is fixed to the fixed part, the fixed section. is arranged pivotally, whereby it is possible that the rotor interior is accessible without removing or swinging the entire throwing accelerator from its environment, which greatly facilitates the handling of the throwing accelerator.
  • the movable / foldable / pivotable part is referred to herein as a folding section.
  • the pivoting movement that can be carried out or performed by the folding section runs along an axis of rotation which runs transversely to the direction of rotation of the rotor or, in other words, parallel to the axis of rotation of the rotor.
  • the rest of the machine preferably the wood chipper, can remain in its position while the folding section performs a kind of lateral pivoting movement.
  • an embodiment is characterized in that the pivoting movement is caused by a hydraulically actuated mechanism.
  • a hydraulically actuated mechanism For a user / operator, this means that the pivoting movement is performed automatically and at the touch of a button, which saves human resources.
  • a hydraulic pump is present, which is the logistical effort behind the Use of an appropriate mechanism is significantly reduced.
  • the hydraulically actuable mechanism has a high level of force, precise operation and a high degree of reliability.
  • the hydraulically actuable mechanism comprises a first flap actuating mechanism in which a hydraulically movable cylinder is arranged.
  • the hydraulically actuable mechanism has a second flap actuating mechanism for stabilizing the first flap actuating mechanism.
  • a sensor is mounted, which sends to a control unit such a signal that the rotor is only drivable when the flap portion is closed.
  • a control unit such a signal that the rotor is only drivable when the flap portion is closed.
  • the sensor is in contact with a control unit as follows: If the rotor does not rotate, a signal is sent which makes it possible to open the folding portion when actuated accordingly. Without transmitting the corresponding signal, the hydraulic actuating mechanism is locked and the housing remains closed even upon actuation of the folding portion.
  • the folding portion of the housing has a ramp-shaped stiffening portion, which acts / acts on the folding portion in the pivoting movement in a reinforcing manner.
  • the stiffening portion gives the folding portion a corresponding strength in order to be able to reliably ensure the high torque in the pivoting, which results primarily from the self-weight of the folding portion, even under cyclic load and a long life, without any deformation of the flap portion to light occurs.
  • Fig. 1 is a throwing accelerator / throwing fan 1 shown, the / connected to a hacking unit 2 / flanged / connected.
  • the throwing accelerator 1 and the chopping unit 2 are preferably arranged on a mobile wood chipper to produce from already felled logs wood chips / wood chips.
  • About a feed-in table 3, are arranged on the various, not shown / not visible from this perspective rollers for raw material guide, preferably tree trunking, is to be shredded medium, preferably wood, fed into the chopping unit 2 and crushed therein by a cutting tool / chopping rotor ,
  • the chopping unit 2 has a maintenance cover 4, which covers this safe and robust and can only be opened in case of maintenance.
  • the reduced by the cutting tool wood chips is preferably over in connection with Fig. 10 presented screw conveyor 44 the throwing accelerator 1 in a feed stream 7, in connection with Fig. 2 is treated again, fed.
  • the throwing accelerator 1 according to the invention is such that it moves the wood chips along a littering tower, not shown, in a discharge stream 8, which is also associated with Fig. 2 is treated again, further promoted.
  • Fig. 2 represents the throw accelerator 1 for a better understanding of the fluid flows from the chopping unit 2 detached.
  • a feed stream 6 to be shredded medium is conveyed to the feed table 3 in the chopping unit 2.
  • this is fed along the feed stream 7 from a hopper-side feed chute 5 to the throw accelerator 1.
  • screw conveyors 44 are preferably arranged, of which one is in Fig. 10 is shown.
  • the feed stream 7 is orthogonal to a rotor housing side surface 9. So is one especially in connection with the FIGS. 3 and 4 described rotor 10 such that it converts the feed stream 7, which along the direction of its axis of rotation, but offset radially outwardly thereto, in its direction and in its velocity into a discharge stream 8.
  • the discharge stream 8 lies in a plane to which the feed stream 7 is vertical.
  • the arrows 7 and 8 are to be understood as a kind Resulting from the composite of countless chips wood chips stream.
  • the person skilled in the art immediately recognizes that speed vectors or motion vectors along each spatial direction can occur with regard to a corresponding chip stream on the individual chips.
  • the illustrated feed stream 7 and the discharge stream 8 indicate only the direction of the respective resulting motion vector of all wood chips.
  • the throwing accelerator 1 is composed of a rotor 10 and a housing 12 housing the rotor 10.
  • the housing 12 is spatially fixed in its surroundings, such as the wood chipper, arranged, while the rotor 10, for example by a rotor-side toothed belt pulley, which is in engagement with a belt drive, is rotatively driven.
  • chopper-side feed chute 5 is in contact with a feed passage 13 formed by the housing 12 such that the chippings pass from the chopping unit 2 into the throw accelerator 1.
  • the shape and dimension of the cross section of the feed chute 5 and the feed passage 13 are thus geometrically dependent without necessarily having the same shape.
  • the feed passage 13 is defined by housing edges 13a, 13b and 13c.
  • the supply passage case edge 13c is described below Fig. 5 showing the throwing accelerator 1 in a different perspective.
  • the feed passage 13 is located lower in a height direction than the feed chute 5. That is, the feed passage case edge 13b extends below the lower edge of the feed chute 5. This has the effect that wood chips, which is transported from the chopping unit 2 to the throwing accelerator 1, do not accumulate during the transition to the throwing accelerator 1, as it drops slightly.
  • a plurality of throwing blades 11 for taking away / shoving wood chips are arranged on the rotor 10.
  • the rotor 10 rotates in a preferred embodiment in the range between 300 to 800, preferably 600, revolutions per minute.
  • the resulting speed of the wood chips stream in the feed through the feed slot 13 on average about zero. This means that the throwing blades 11 at a rotor diameter 23 of preferably over one meter due to the high relative speed with high force on the wood chips / wood chips.
  • the throwing blades 11 are to be made robust.
  • the throwing blades 11 are connected according to the invention along one of their side surfaces with a rotor wall plate 15 described in more detail below.
  • the throwing blades 11 have in the present embodiment on a purely radial course. Basically, it is also conceivable to design these curved to form within a throwing scoop still a bag of pebbles.
  • Fig. 4a or 4b the housing 12 and the rotor 10 are shown separately for reasons of clarity.
  • a significant advantage of the embodiment of the rotor 10 according to the invention can be seen by disregarding the feed passage 13 and the surface released by it into the interior of the rotor Figure 3 with the out Fig. 4a compares.
  • the effective supply passage that is, the supply passage 13, which is actually realized for the wood chips due to the volume, which takes the rotor 10
  • the effective supply passage 13 which is actually realized for the wood chips due to the volume, which takes the rotor 10
  • accumulation of wood chips in addition to the aforementioned lower arrangement of the feed passage 13 compared to the feed shaft 5 is additionally prevented by the rotor geometry according to the invention.
  • the rotor 10 is characterized by a high degree of constructive particularity.
  • the throwing blades 11 are arranged on one side on a rotor wall plate 15.
  • the rotor wall disc 15 fixes the throwing blades 11 to the first at a radially inner throwing blade receptacle 15a to the torque of the rotor 10, that is, the torque applied to the rotor wall plate 15, to guide the throwing blades 11 so that they supply the wood chips kinetic energy.
  • Supporting the radially inner throwing blade receptacle 15a, the throwing blades 11 are also coupled to the rotor wall disk 15 via radially outer throwing blade receptacles 15b.
  • This coupling is done for example via a welded joint and additionally or alternatively via a non-positive connection, such as a screw connection.
  • a non-positive connection such as a screw connection.
  • a rotor wall ring 16 is arranged on the other side of the throwing blades 11.
  • this assumes the function of guiding a radial blade end region 20 also on the side opposite the rotor wall disk 15.
  • the rotor wall ring 16 generates the effect of the "rotating wall", which significantly reduces the friction occurring by the wood chips.
  • the radial blade end region 20 is preferably via a screw connection and additionally via a welded connection on the one side with the rotor wall disk 15, connected on the other side with the rotor wall ring 16.
  • the rotor wall ring 16 allows a space-saving arrangement of the rotor 10 in the housing 12, since the rotor wall ring 16 and a rotor wall ring outer surface 24, which is directed away from the rotor wall plate 15, in an in Fig. 9 illustrated recess 34 of the housing 12 is arranged.
  • the depression can also be referred to as a groove or undercut or step.
  • the height of the rotor wall ring 16 in the radial direction is small compared to the outer radius of the rotor wall ring 16. In a preferred embodiment, the height of the rotor wall ring 16 is between 4cm and 10cm, preferably 6cm.
  • the rotor 10 has two types of throwing blades 11 in the present embodiment.
  • Carrier-throwing vanes 11a are prepared to transfer a higher proportion of kinetic energy to the wood chips than auxiliary throwing vanes 11b.
  • Carrier throwing vanes 11a and auxiliary throwing vanes 11b are alternately arranged approximately in the circumferential direction.
  • the ratio of carrier throwing vanes 11a to auxiliary throwing vanes 11b is 1: 1 in the present case. In other embodiments of the invention, however, other conditions up to the elimination of the auxiliary throwing vanes 11b are possible.
  • the radially inner throwing blade receptacle 15a is formed in the carrier throwing vanes 11a as a support region, which introduces force from radially inward onto the carrier throwing vanes 11a.
  • the throwing blades 11 have a recess 21. Due to the centrifugal force, the wood chips are conveyed substantially via the radial blade end region 20 to the discharge passage 14.
  • the respective recesses 21 thus entail space and weight advantages without impairing the conveying quality of the wood chips stream.
  • the geometry of the recess 21 is variably ausgestaltbar.
  • the recesses 21 of the auxiliary throwing vanes 11b are normally larger than the cutouts 21 of the carrier throwing vanes 11a, so that the carrier throwing vanes 11a form a larger throwing blade surface, since they are connected more robustly to the rotor wall plate 15.
  • An outer housing diameter 22 represents the outer diameter of the housing part, which is arranged rotationally symmetrical.
  • the housing outer diameter 22 exceeds in its amount a rotor outer diameter 23, which corresponds to the outer diameter of the rotor wall disk 15, only insignificantly.
  • the rotor 10 and the housing 12 are adapted to each other as space-optimized as possible.
  • Fig. 4b the view is off Fig. 4a shown with the rotational direction 17 of the rotor 10.
  • Perpendicular to the direction of rotation 17 is the transverse direction 18 along which the feed stream 7, in connection with Fig. 2 imagines, runs.
  • Tangential to the direction of rotation 17 is the tangential direction 19, along which the discharge stream 8, which is also associated with Fig. 2 is presented, runs.
  • FIGS. 5a and 5b the throwing accelerator 1 is shown in an assembled state in a further perspective.
  • the supply passage case edge 13c forms, together with the edges 13a and 13b, the third edge which realizes the feed passage 13.
  • a separating blade 25 which may also be referred to as a separating knife, is arranged according to a possibly independently claimable article of the invention.
  • the rotor 10 rotates within the housing 12 along the direction of rotation 17, it transports the woodchip, which is fed through the feed passage 13 into the interior of the rotor, past the separating blade 25.
  • the separating blade 25 is set up on the rearmost feed passage area 13d viewed in the direction of rotation 17.
  • the separating blade 25 has a concave curved blade contour. This results in an enlarged attack surface of the separating blade 25 compared with a straight cutting blade.
  • the separating blade 25 is formed integrally with the housing 12. This results in a very space-saving arrangement.
  • an immersion blade 26 is shown. This is arranged in the region of the discharge passage 14 and seen in the direction of rotation at a rearmost discharge passage area 14a. Thus, the chips that are thrown over the dipping blade 26 to maintain the smoothness of the rotor.
  • the immersion blade 26 is also formed integrally with the housing 12 and a Gepatiuseab Technologyschacht 37, which is offset from the rotationally symmetrical housing part and the polygonal discharge passage 14 ausformt, on which the unillustrated litter tower is placed.
  • the housing discharge section 37 is integrated into the housing 12 such that it guides the discharge stream 8 along the tangential direction 19 in such a way that the least possible relative friction between the accelerated wood chips and the housing 12 occurs.
  • the housing 12 of the throwing accelerator 1 can be divided into a fixed section 38 and a folding section 39.
  • the fixed portion is spatially fixed in its environment, preferably the wood chipper, can be solved from this so only at considerable expense.
  • the flap portion 39 is hinged / pivotable / rotatable relative to the fixed portion 38 to facilitate accessibility to the rotor interior.
  • the folding or pivoting movement of the folding portion 39, in connection with Fig. 8 is caused by a first flap actuating mechanism 28.
  • This has a preferably hydraulically actuable adjusting cylinder, which causes a pivoting of the flap portion by means of a linear movement.
  • a second flap actuating mechanism 29 preferably a guide of the first
  • the folding section 39 in the case of a pivoting, also performs a translation in addition to a rotation.
  • a stiffening portion 30 is disposed between the housing discharge chute side end of the first door operating mechanism 28 and a center portion of the folding portion 39.
  • the stiffening section 30 merges tangentially into the folding section 39, from which a gentle introduction of force is realized in the case of a pivoting movement.
  • the hinged portion 39 of the housing 12 forms folding edge portions depending on the geometry of the fixed portion 38 ,
  • a first flap portion edge 27 extends in the closed state substantially orthogonal to the direction of rotation 17 of the rotor. It provides the folding section 38 with a first abutment shoulder, which increases the geometric accuracy of the housing 12.
  • a second flap section edge 31 which extends substantially along an arcuate segment of the flap section 39.
  • a third flap section edge 32 forms a further abutment shoulder between the flap section 39 and the fixed section 38.
  • the third flap section edge 32 is in the closed state of the flap section 39 in contact with a fixed part edge 33rd
  • a sensor is arranged in the area of the first flap actuating mechanism 28, which releases pivoting only in the state in which the rotor 10 is inactive, ie without Power supply, is.
  • the area bordered by IX is related to Fig. 9 enlarged and presented in a different perspective.
  • Fig. 8b turns off the view Fig. 8a , wherein a pivoting direction 40 indicating the Aufschwenkamba is shown.
  • the pivoting direction 40 is about an axis of rotation which is perpendicular to the direction of rotation 17 of the rotor.
  • the pivoting of the folding portion 39 extends about an axis of rotation which is parallel to the rotor axis of rotation.
  • a robust pivoting / swiveling movement of the folding section 39 to the fixed section 38 is made possible in particular by the cylinder arranged in the first flap actuating mechanism 28, which is guided by the second flap actuating mechanism 29 in a type of parallelogram guide. From an actual parallelogram guide, the interaction according to the invention of the first flap actuating mechanism 28 and the second flap actuating mechanism 29 substantially differs in that the two mechanisms are angled at an angle between 10 ° and 30 °.
  • Fig. 9 shows a view from the outside of the rotor interior with unfolded flap portion 39.
  • a throwing blade 11 is formed as an auxiliary throwing blade 11b.
  • the radial blade end region 20 extends across the entire width of the rotor wall disc 15, which is left in the present view, to the rotor wall ring 16, which is right in the present view.
  • the recess 21 is approximately parabolic.
  • the indentation 34 formed by the housing 12 or the supply-passage-side housing inner wall 35 makes it possible for the rotor wall ring 16 to engage the housing 12 in such a way that the transition from the housing inner wall 35 to the rotor wall ring 16 is flush, as illustrated by the reference numeral 36.
  • This surface 36 is thus only a drawn auxiliary surface, which visualizes the flush of the housing inner wall 35 and the rotor wall ring 16 recognizable, which is not present in the device itself.
  • FIG Fig. 9 The effect of the revolving wall, which arises according to the invention for the extracted from the throwing blades 11 wood chips, is shown in FIG Fig. 9 clearly visible.
  • the separating blade 25 is formed substantially as a quarter circle.
  • the throwing accelerator 1 is shown in a state in which it is flanged to the chopping unit 2 approximately.
  • a screw conveyor 44 is in this case arranged in the feed chute 5 in order to carry wood chips into the rotor interior.
  • Wood chips which is located at the rotor 10 facing the end of the feed shaft 5, falls along a rotor inlet slope 45 in a radially outer edge region 43 of the rotor 10 and forms there the wood chips carpet described above. That slope 45 is made possible by a radial step 42. This refers to the step that forms between the lower supply passage housing edge 13 b and a radial outer wall 41 of the housing 12.
  • the wood chips carpet which forms in the edge region 43, only has a relative friction component to the outer wall 41. Due to the rotor wall plate 15 according to the invention and the rotor wall ring 16, the woodchip carpet is transported laterally smoothly. This shape of a closed pocket thus has a positive effect on the efficiency of the entire throwing accelerator 1.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP19173126.4A 2017-02-24 2018-02-23 Accélérateur de projection d'une machine traitant le bois Withdrawn EP3569316A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017103855.8A DE102017103855A1 (de) 2017-02-24 2017-02-24 Wurfbeschleuniger einer holzverarbeitenden Maschine
EP18158428.5A EP3366376A1 (fr) 2017-02-24 2018-02-23 Accélérateur de chargement d'une machine de traitement du bois

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP18158428.5A Division EP3366376A1 (fr) 2017-02-24 2018-02-23 Accélérateur de chargement d'une machine de traitement du bois

Publications (1)

Publication Number Publication Date
EP3569316A1 true EP3569316A1 (fr) 2019-11-20

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Application Number Title Priority Date Filing Date
EP19173126.4A Withdrawn EP3569316A1 (fr) 2017-02-24 2018-02-23 Accélérateur de projection d'une machine traitant le bois
EP18158428.5A Withdrawn EP3366376A1 (fr) 2017-02-24 2018-02-23 Accélérateur de chargement d'une machine de traitement du bois

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Application Number Title Priority Date Filing Date
EP18158428.5A Withdrawn EP3366376A1 (fr) 2017-02-24 2018-02-23 Accélérateur de chargement d'une machine de traitement du bois

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DE (1) DE102017103855A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018122716B3 (de) * 2018-09-17 2019-12-19 Technische Universität Dresden Förderer für Hackschnitzel und andere Schüttgüter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9419877U1 (de) 1994-12-12 1995-02-16 Bruks Mek. AB, Arbrå Anbaubares Schnitzelwerk zur Erzeugung von Holzschnitzeln für mobile Maschinen
US6027055A (en) * 1998-01-28 2000-02-22 Doskocil; David Lee Brush chipper
DE102015101606A1 (de) * 2015-02-04 2016-08-04 Kesla Oyj Gebläse einer Hackmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869793A (en) * 1953-06-19 1959-01-20 William T S Montgomery Machine for punching and cutting of wood
AT361762B (de) 1979-11-23 1981-03-25 Buchmann & Co Schrotmuehle
US20040108398A1 (en) * 2002-12-04 2004-06-10 Highline Mfg. Inc. Drum shredder
EP2047911A1 (fr) 2007-10-11 2009-04-15 PC Maskiner ApS Machine de hachoir à bois avec tamis périphérique et dispositif de désagrégation
DE102010043317A1 (de) 2010-11-03 2012-05-03 Leibniz-Institut für Agrartechnik Potsdam-Bornim e.V.(ATB) Mäh-Hackvorrichtung zur Ernte großwüchsiger Pflanzen
DE102013202454B4 (de) 2013-02-14 2015-02-05 Technische Universität Dresden Vorrichtung zum Homogenisieren von Holzhackschnitzeln

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9419877U1 (de) 1994-12-12 1995-02-16 Bruks Mek. AB, Arbrå Anbaubares Schnitzelwerk zur Erzeugung von Holzschnitzeln für mobile Maschinen
US6027055A (en) * 1998-01-28 2000-02-22 Doskocil; David Lee Brush chipper
DE102015101606A1 (de) * 2015-02-04 2016-08-04 Kesla Oyj Gebläse einer Hackmaschine

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DE102017103855A1 (de) 2018-08-30

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