WO2020102869A1 - Équipement récolteur de café - Google Patents

Équipement récolteur de café

Info

Publication number
WO2020102869A1
WO2020102869A1 PCT/BR2019/050489 BR2019050489W WO2020102869A1 WO 2020102869 A1 WO2020102869 A1 WO 2020102869A1 BR 2019050489 W BR2019050489 W BR 2019050489W WO 2020102869 A1 WO2020102869 A1 WO 2020102869A1
Authority
WO
WIPO (PCT)
Prior art keywords
equipment
cable
gear
damper
spiral bevel
Prior art date
Application number
PCT/BR2019/050489
Other languages
English (en)
Portuguese (pt)
Inventor
Takashi Nishimura
Original Assignee
Brudden Equipamentos Ltda
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
Priority claimed from BR102018073908A external-priority patent/BR102018073908A2/pt
Priority claimed from BR102019023746-5A external-priority patent/BR102019023746A2/pt
Application filed by Brudden Equipamentos Ltda filed Critical Brudden Equipamentos Ltda
Publication of WO2020102869A1 publication Critical patent/WO2020102869A1/fr
Priority to CONC2021/0007373A priority Critical patent/CO2021007373A2/es

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D46/00—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs
    • A01D46/06—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs of coffee
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D46/00—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs
    • A01D46/26—Devices for shaking trees or shrubs; Fruit catching devices to be used therewith

Definitions

  • the present invention relates to a coffee spilling equipment, and more particularly to a coffee spilling equipment suitable to operate at high frequencies, provided with an oscillating mechanism and a vibration damper for coffee spilling equipment that operates at high frequencies.
  • the present invention refers to a new concept of portable coffee harvesting machine, with improvement of the parameters of amplitude of the movement of the stems and frequency of oscillation thus attributing to the equipment new characteristics of selectivity among others, such as restriction sweep, number of shanks, number of extensions, length of extensions, stem geometry and material.
  • the improvement aims to allow a selective harvest of coffee, allowing the removal of ripe beans at the expense of falling green beans, improving the quality of harvested and commercialized coffee, as well as increasing harvest productivity, as taught in document BR 102018073907 -7.
  • This improvement is applicable to the portable coffee harvester powered by combustion, battery powered or powered by a network or batteries. State of art
  • the stripping device itself, which makes up the stripping equipment, consists of a mechanism that turns the rotation of the extension of the axis of a motor into a back and forth movement of two groups of rods, arranged radially in fan , acting in opposite directions. These groups of rods have the appearance of human hands, placed side by side in the same plane. Examples of devices of this type can be obtained from documents PI 0700905, WO 2011026204, PI 9601916, PI 9900410, PI 9901223, FR 2327719 and BR 202014014388. In addition, documents PI 0601653 and PI 9804109 should also be mentioned, which also indicate some conditions relating to the method of harvesting coffee beans.
  • selectivity in mechanized harvesting of beans and fruits, in particular coffee beans can only be obtained by radically altering the parameters of the art, and in particular using equipment capable of generating a high frequency, in the order of 200-250 Hz, with an absolutely restricted amplitude, that is, in the order of millimeters.
  • the document MU 8001043-1 depositing in the year 2000, describes a coffee spilling equipment basically composed of a crankshaft type shaft, maintained in position by respective bearings and which is directly coupled to the output shaft of an engine. Said crankshaft has a pair of cams which are attached to the respective connecting rods, which engage, at opposite ends, rods by means of respective labels. Due to the direct coupling between engine and crankshaft, this equipment is not able to operate at high movement of the rods.
  • the document MU 8700205-1 describes a harrowing equipment for the harvesting of coffee beans, comprising a pinion directly driven by a rotating axis of an engine, said pinion engaging an inclined surface of a crown, the which is able to rotate freely around the axis indirectly attached to the device housing.
  • Said crown presents, inferiorly, an eccentric cam designed to transmit the rotation of the crown to a connecting rod, which moves and transmits, from its opposite end, that is, downstream of the engagement with the crown, causing an axial movement changing the plunger, which in turn articulates and moves the striking rods.
  • the frequency and amplitude of the movements of the striking rods can vary depending on a series of adjustments, or dispositions, of these components, thus compensating the reduction (about 5.5 : 1) from the pinion and crown coupling. It is also imperative to highlight that, as taught in this document, the striking speed of the striking rods (frequency / amplitude) is inversely proportional to the equipment's durability.
  • a first purpose of the present invention is a coffee spawning equipment capable of promoting the vibration of the stems for harvesting coffee at high frequency and low amplitude.
  • Another object of the invention is equipment capable of operating at high frequency, for this purpose comprising a specific project and the dimensioning of all components, from the transmission mechanism to the damping system, in order to maintain a similar useful life to the current equipment and provide the user, through the damping system, a more comfortable, healthy operation and with reduction in the effects of fatigue and wear of the other mechanical components used in the equipment.
  • a coffee spilling equipment that consists of the provision of a spilling device capable of transforming the rotating movement of a driving unit into stem vibration in the frequency range that separates the natural frequency of ripe grains from that of green grains and equipped with a vibration damping system that reduces the effects of this working frequency range for the equipment operator and the motor-transmission system equipment.
  • a vibration damping system that reduces the effects of this working frequency range for the equipment operator and the motor-transmission system equipment.
  • the coffee spilling equipment comprises a cable interconnecting a motor to a spilling device, and inside the said cable a cardan axis is provided that transfers the rotation generated by said motor to the mechanisms internally housed in a box of the stripping device, and at the outlet of said box is coupled to at least one rod capable of operating at high frequency and low amplitude.
  • said equipment still comprises: the downstream end of said cable is connected to a damper, said damper connecting the cable to the nozzle of the box; and the stripping device comprises a conversion mechanism capable of multiplying the engine's received revolutions while promoting its spatial reorientation and conversion in oscillatory motion.
  • the cardan shaft is disposed internally in the cable, and said shock absorber comprises an elastomeric mass of cylindrical conformation with a hollow center, the said cardan axis crossing the hollow center of said elastomeric mass.
  • the Damper is defined by a pair of couplings, involving the elastomeric mass laterally, and the inlet coupling consists of a jaw, cylinder-shaped and able to wrap the cable, as well as a flange that protrudes from said radially jaw.
  • the outgoing coupling, opposite to the inlet coupling comprises a flange that protrudes radially from a cylindrical duct, said cylindrical duct capable of penetrating and being fixed in the nozzle of the box, and the opposite faces being between the elastomeric mass is vulcanized from the flanges.
  • combustion engine whose output shaft is coupled to said cardan shaft, has the opposite end of said cardan shaft coupled to a first spiral bevel gear, said gear being able to rotate supported externally by at least one bearing and capable of coupling a conversion mechanism comprising a second spiral bevel gear, said gear having a number of teeth less than the number of teeth of said first spiral bevel gear.
  • Said second spiral bevel gear has a decentralized hole displaced in relation to the geometric axis of said gear, and in said decentralized hole an eccentric axis is fitted.
  • Said eccentric shaft supports a counterweight and a cylindrical bearing, said bearing being engaged by a fork.
  • a spindle presents, next to a first end, said fork and, close to the opposite end, at least one stem mounted by means of splines.
  • This improvement is applicable to the portable coffee harvester powered by combustion, battery or with mains power supply.
  • the coffee spilling equipment comprises a cardan shaft that transfers the rotation of a combustion engine, or any other unit generating rotational movement to a spilling device, consisting of a transmission box with a pair of gears perpendicular axially driven by the cardan shaft.
  • the second gear has a smaller number of teeth than the first, thus multiplying the input speed.
  • This gear has an off-center hole where a shaft is fitted.
  • This axis performs a translation movement.
  • a cylindrical bearing is attached to this same axis, responsible for transmitting its displacement to a fork pivoted on a spindle, positioned parallel to the axis off center, thus the fork makes two arcs in opposite directions and drives the accompanying spindle. its angular displacement.
  • the stem in turn, is mounted by means of grooves at the end of the same spindle, externally to the transmission set, and follows the angular displacement of that axis where it is coupled.
  • the rod needs high mechanical resistance and a geometry that implies in reducing mass, positioning the center of gravity on the spindle and reducing the moment of inertia, in order to support the demands of the mechanism and, mainly, to resist the extreme operating conditions.
  • Figure 1 illustrates, in isometric view, the front portion of a coffee maker according to the invention
  • figure 2 shows the stripping device of figure 1, in an isometric view and with the stripping device in longitudinal section;
  • figure 3 illustrates the ripper of figure 1 and the cardan that transfers the rotation of the motor, in a side elevation view, from an orthogonal plane in relation to the cutting plane of figure 2;
  • Figure 4 shows a side elevation and longitudinal section view of the assembly of the pair of spiral bevel gears and the positioning of the shaft in the eccentric bore of the second gear, to which the cylindrical bearing is mounted;
  • Figure 5 illustrates, in an isometric view, the transformer device for rotating oscillating movement
  • Figure 6 illustrates an isometric view in longitudinal section, of the assembled shock absorber assembly, detaching the front flange isolated from the rear flange, and the vulcanized rubber joining the two flanges.
  • a coffee spilling equipment (10) is illustrated, capable of operating with extremely high beat frequencies and low amplitudes, in comparison with the state of the art equipment, according to the above assumptions. More particularly, the present stripping equipment is particularly capable of carrying out the harvesting method, as specified in the document BR 102018073907-7.
  • the coffee spilling equipment (10) comprises a spilling device (9), defined by a box (11) inside which the conversion mechanisms (3) are arranged. -7) from the rotational movement, generated by a motor (not shown), to an oscillatory movement of the rods (8), arranged at the downstream end of said box (11) of the lifting device (9).
  • the upstream end of the box (11) provides for a nozzle (12) capable of receiving the outlet coupling (13) from the damper (16), whose inlet coupling (17) is engaged by the cable (14); furthermore, said cable (14) is preferably cylindrical and intended to couple said motor to the stripping device (9).
  • a cardan shaft (1) is provided to transmit the rotational movement produced by the motor to the cinematics of the lifting device (9), internal to the box (11).
  • the cable (14) is engaged with the damper (16).
  • Said damper (16), as illustrated in figures 2 and 6, is defined by a pair of couplings, specifically by an input coupling (17) and an output coupling (13).
  • the inlet coupling (17) of the damper (16) is basically composed of a jaw (20), cylinder-shaped and able to wrap the cable (14), as well as a flange (23) that protrudes of said cheek.
  • the clamp (20) has a longitudinal opening in which upstream edges are provided with eyelets (22) (see figure 1).
  • the eyebolts (22) can be moved apart or brought together (via screw, for example), respectively releasing or locking the cable (14) in relation to the damper (16).
  • the external diameter of the duct (25) corresponds approximately to the internal diameter of the clamp (20), as well as to the external diameter of the cable (14).
  • Said flanges (23, 24) wrap laterally and are fixed to an elastomeric mass (18), cylindrical in shape and with a hollow center.
  • said hollow center of the elastomeric mass (18) has a diameter compatible with the light of the cylindrical cable (14).
  • the vibration damping system (16: 17, 18, 13) acts to reduce the transmission of vibration energy from the stripping device (9) to the operator and to the motor-transmission assembly, absorbing part of the vibration energy in the elastomeric structure of the elastomeric mass (18).
  • an eventual free transmission of the vibration energy of the stripping device (9), and more accentuated by the vibration of the rods (8), would prevent prolonged use by the equipment operator (10), for example. muscle exhaustion, as well as drastically reduce the engine's useful life, as its component parts would suffer from stress above its operational limit.
  • the rubber that forms the shock absorber (16) is vulcanized directly between the flanges (23, 24) of the shock absorber inlet (17) and outlet (13) couplings (13), thus increasing the absorption of vibration and giving a mechanical resistance to the upper set for applications with traditional fasteners.
  • the elastomeric mass (18), composed of rubber, and preferably natural rubber, should have a Shore A hardness of 45 to 55.
  • a particularly advantageous specification of rubber is ASTM D 2000 M4 AA 520 A13 B13 C12 G21 Kll, according to international standard, in which: ASTM D 2000 - Standard Classifcation System for Rubber Products in Automotive Applications; M4 - metric, grade 4; AA - natural rubber; 5 - Shore-A hardness x 10; 52 - tensile strength; A13 B13 C12 G21 Kll - tests required in the PM, in the laboratory.
  • the motor transfers rotation through the cardan shaft (1) to the lifting device (9), specifically from the coupling to a pair of spiral bevel gears ( 2, 3), which change the plane and speed of rotation.
  • said cardan shaft (1) couples the first spiral bevel gear (2), with horizontal axis of rotation, in order to rotate with the same rotation speed as the cardan axis, since it is wrapped and supported by bearings (21 ).
  • the second spiral bevel gear (3) has a smaller number of teeth in relation to the input gear (2), which causes the effect of multiplying the rotations by a factor of about 1.5.
  • the second spiral bevel gear (3) has an axis of vertical rotation and is held in position by a first bearing (31).
  • this output gear (3) has a decentralized hole (15) displaced by about 1.3 mm in relation to the geometric axis of said gear (3), with said hole being an eccentric axis (4).
  • the lower end of the eccentric shaft (4) (as seen in figure 4), that is, opposite the end of the eccentric shaft (4) coupled to said gear (3), is correspondingly coupled to an opposite bushing (26) to which, similarly to the second spiral bevel gear (3), has a lagged hole (150, said opposite sleeve (26) being supported, in free rotation, by the second bearing (310- More specifically, the so-called eccentric shaft ( 4) it is, in fact, a cylindrical shaped shaft and, due to its coupling in the decentralized holes (15, 150 of the gear (3) and the opposite bushing (26), it performs a combined movement of circular translation, according to a plane perpendicular to its axis, with a rotation movement. As a result of this construction, this axis simulates a regular eccentric movement.
  • a counterweight (19) is also provided, arranged between the second gear (3) and a cylindrical bearing (5), in order to compensate for the displacement of the center of gravity of the stripping device (9), compensation which is imperative due to the high speeds assumed by this mechanism.
  • a cylindrical bearing (5) is attached to said eccentric shaft (4), responsible for transmitting its displacement to a fork (6) (see figure 5) pivoted on a spindle (7), positioned parallel to the eccentric axis (4).
  • the fork (6) makes two arcs in opposite directions and drives the spindle (7) that follows its angular displacement.
  • the rod (8) is mounted by means of grooves at the end of the same spindle (7), and follows the angular displacement of that spindle (7) where it is coupled.
  • the equipment may have only one stem, since the actuation method does not generate the need to intensely "shake” the branch of the tree, but simply "touch” in the branch, which can be satisfactorily done with just 1 stem.
  • the device of the invention allows the realization of the regime rotation of the power generating unit, promoting a high frequency output rotation.
  • the rotation is transmitted to an axis that, when connected to an oscillating rotary movement transforming device, transmits oscillatory movements to tools connected to this device.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Retarders (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un équipement récolteur de café (10), comprenant un manche (14) reliant un moteur à un dispositif de récolte (9). Un arbre à cardan (1) est prévu à l'intérieur dudit manche (14), cet arbre transférant la rotation produite par ledit moteur aux mécanismes logés intérieurement dans un boîtier (11) du dispositif de récolte (9). Au moins une tige (8) apte à fonctionner à une fréquence élevée et à une faible amplitude est accouplée au niveau de la sortie dudit boîtier (11). Ledit équipement se caractérise également en ce que l'extrémité aval dudit manche (14) est reliée à un amortisseur (16), ledit amortisseur reliant le manche (14) à l'embouchure (12) du boîtier (11). En outre le dispositif de récolte (9) comporte un mécanisme de conversion (3-7) apte à multiplier les rotations reçues du moteur en même temps qu'il favorise sa réorientation spatiale et la conversion en mouvement oscillatoire. Ledit équipement est particulièrement apte à fonctionner à des fréquences élevées et à une faible amplitude.
PCT/BR2019/050489 2018-11-21 2019-11-12 Équipement récolteur de café WO2020102869A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CONC2021/0007373A CO2021007373A2 (es) 2018-11-21 2021-06-04 Equipo derribador de café

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BR102018073908A BR102018073908A2 (pt) 2018-11-21 2018-11-21 equipamento derriçador de café
BRBR1020180739085 2018-11-21
BR102019023746-5A BR102019023746A2 (pt) 2018-11-21 2019-11-11 equipamento derriçador de café
BRBR1020190237465 2019-11-11

Publications (1)

Publication Number Publication Date
WO2020102869A1 true WO2020102869A1 (fr) 2020-05-28

Family

ID=70773045

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2019/050489 WO2020102869A1 (fr) 2018-11-21 2019-11-12 Équipement récolteur de café

Country Status (2)

Country Link
CO (1) CO2021007373A2 (fr)
WO (1) WO2020102869A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2611873A1 (de) * 1975-04-03 1976-10-21 Hatsuta Brasil Tragbares, motorgetriebenes schuettelgeraet zum schuetteln von aesten o.dgl.
BR102014007298A2 (pt) * 2014-03-26 2014-08-26 Nilberto Joao Forster Derriçadeira mecânica de café e outros frutos

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2611873A1 (de) * 1975-04-03 1976-10-21 Hatsuta Brasil Tragbares, motorgetriebenes schuettelgeraet zum schuetteln von aesten o.dgl.
BR102014007298A2 (pt) * 2014-03-26 2014-08-26 Nilberto Joao Forster Derriçadeira mecânica de café e outros frutos

Also Published As

Publication number Publication date
CO2021007373A2 (es) 2021-08-30

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