Method and device for hitching an agricultural implement to a three-point lifting system of an agricultural tractor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A01B-051/00
A01B-059/06
A01B-059/00
출원번호
US-0430857
(2013-09-23)
등록번호
US-9485899
(2016-11-08)
우선권정보
FR-12 02527 (2012-09-24)
국제출원번호
PCT/FR2013/000249
(2013-09-23)
국제공개번호
WO2014/044932
(2014-03-27)
발명자
/ 주소
Ribo, Robert
Ribo, Romain
Boulnois, Bastien
출원인 / 주소
Tracto-Lock
대리인 / 주소
Orrick, Herrington & Sutcliffe LLP
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
The invention relates to a device for coupling an agricultural implement to an agricultural tractor (1), comprising two frames (10) each provided with two base plates (11a) arranged such that each base plate (11a) of the frame (10) carried by the agricultural tractor (1) is brought into position und
The invention relates to a device for coupling an agricultural implement to an agricultural tractor (1), comprising two frames (10) each provided with two base plates (11a) arranged such that each base plate (11a) of the frame (10) carried by the agricultural tractor (1) is brought into position under the base plate of the frame carried by the agricultural implement, in such a way as to form, with the latter, a pair of base plates consisting of a base plate pierced by a hole of predefined cross-section and dimensions and a base plate (11) comprising a centering member (18, 19) of decreasing cross-section starting from a base section of dimensions and cross-section matching those of the hole of the other base plate. In addition, tilting means are designed to cause, in a position where the centering members (18, 19) are partially engaged with the facing holes, a relative tilting of the two frames during which said centering members serve as the pivot for said tilting.
대표청구항▼
1. A method for coupling an agricultural implement (3) to a three-point linkage system (2) of an agricultural tractor (1) of longitudinal axis (x), wherein: a coupling device is used comprising two frames (10, 40; 80, 100) consisting of a coupling frame (10; 80), provided with fastening members (16,
1. A method for coupling an agricultural implement (3) to a three-point linkage system (2) of an agricultural tractor (1) of longitudinal axis (x), wherein: a coupling device is used comprising two frames (10, 40; 80, 100) consisting of a coupling frame (10; 80), provided with fastening members (16, 17a; 92) for attaching to the three-point linkage system (2) of the agricultural tractor (1), and a coupled frame (40; 100), provided with fastening members (46, 48; 106, 107, 114) for attaching to the agricultural implement (3), both adapted to extend, respectively, transversely to the agricultural tractor (1) and to the agricultural implement,the coupling is performed, in an initial prepositioning position of the agricultural tractor (1) relative to the agricultural implement (3), by maneuvers to pair the two frames (10, 40, 80, 100), then by a relative locking of said frames,said coupling method being characterized in that:a coupling device is created: in which the coupling frame (10; 80) and the coupled frame (40; 100) each comprise two base plates,(11, 53, 54; 93, 118, 119), arranged at the base of said frames so that the base plates (11, 53, 54; 93, 118, 119) of each frame (10, 40; 80, 100) are spaced apart from each other and aligned along a transverse axis (y), and so that each base plate (11; 93) of the coupling frame (10; 80) forms, with one of the base plates (53, 54; 118, 119) of the coupled frame (40; 100), a pair of base plates (11/53, 11/54; 93/118, 93/119) provided with flat contact faces (11a, 53a; 93a, 118a) arranged such that the contact face (53a; 118a) of the base plate (53, 54; 118, 119) of the coupled frame (40; 100) rests on the contact face (11a; 93a) of the base plate (11; 93) of the coupling frame (10; 80) when said frames are in the paired position, one of the base plates (53, 54; 118, 119) of each pair of base plates ((11/53, 11/54; 93/118, 93/119) being pierced by a facing hole (55; 120) of predetermined cross-section and dimensions,and the other base plate (11; 93) of each pair of base plates (11/53, 11/54; 93/118, 93/119) comprising, projecting from a contact face (11a; 93a), a centering member (18, 19; 94, 95) of decreasing cross-section in at least two planes perpendicular to said contact face and respectively parallel to axes (x) and (y), starting from a base section of dimensions fitting with those of the facing hole (55; 120) of the other base plate (53,54; 118, 119),comprising means (9; 70, 71, 75) for relative tilting of the two frames (10, 40; 80, 100),and the coupling is carried out in the initial prepositioning position of the agricultural tractor (1) relative to the agricultural implement (3), by (a) actuating the linkage system (2) so as to cause each centering member (18, 19) to partially engage with the facing hole (55, 120), by the raising of the coupling frame,then (b) generating the relative tilting of the two frames (10, 40) so as to cause, in the position where the centering members (18, 19; 94, 95) are partially engaged with the facing holes (55; 120), a tilting during which said centering members serve as a pivot for said tilting, until a final paired position is obtained where the contact faces (11a, 53a; 93a, 118a) of the base plates (11, 53, 54; 93, 118, 119) of each of the two pairs of base plates (11/53, 11/54; 93/118, 93/119) are superimposed and in contact with one another, and the centering members (18, 19; 94, 95) are fully engaged with the facing holes (55; 120). 2. The coupling method according to claim 1, wherein the linkage system (2) is equipped with a central arm (9) consisting of an actuating cylinder, and (b) wherein the relative tilting of the two frames (10, 40; 80, 100) is generated by activating deployment of said cylinder. 3. The coupling method according to claim 1, wherein: the coupling frame (10) is equipped with at least one pivot arm (70, 71) pivoting on said coupling frame (10) about a pivot axis at least substantially parallel to axis (y), positioned at a base of said coupling frame, each of said pivot arms having a hook-shaped end (73, 74) that engages, in the position where the centering members (18, 19) are partially engaged with the facing holes (55), with a facing catch member (52) integral with the coupled frame (40),(b) the relative tilting of the two frames is generated by pivoting each pivot arm (70, 71) so that the respective hook-shaped end (73, 74) travels a path in which the respective hook-shaped end engages the facing catch member (52), causing the coupling frame (10) to tilt. 4. A device for coupling an agricultural implement (3) to a three-point linkage system (2) of an agricultural tractor (1) of longitudinal axis (x), comprising a coupling device comprising two frames (10, 40; 80, 100) consisting of a coupling frame (10; 80), provided with fastening members (16, 17a; 92) for attaching to the three-point linkage system (2) of the agricultural tractor (1), and a coupled frame (40; 100), provided with attachment members (46, 48; 106, 107, 114) for attaching to the agricultural implement (3), both adapted to extend, respectively, transversely to the agricultural tractor (1) and to the agricultural implement (3), said coupling frame and coupled frame being adapted to be paired and comprising relative lock (22, 23, 52; 70, 71, 52; 87, 109, 110), said coupling device being characterized in that: the coupling frame (10; 80) and the coupled frame (40; 100) each comprise two base plates (11, 53, 54; 93, 118, 119), arranged at the base of said frames, so that the base plates (11, 53, 54; 93, 118, 119) of each frame (10, 40; 80, 100) are spaced apart from each other and aligned along a transverse axis (y), and so that each base plate (11; 93) of the coupling frame (10; 80) forms, with one of the base plates (53, 54; 118, 119) of the coupled frame (40; 100), a pair of base plates (11/53, 11/54; 93/118, 93/119) provided with flat contact faces (11a, 53a; 93a, 118a) arranged such that the contact face (53a; 118a) of the base plate (53, 54; 118, 119) of the coupled frame (40; 100) rests on the contact face (11a; 93a) of the base plate (11; 93) of the coupling frame (10; 80) when said frames are in the paired position, one of the base plates (53, 54; 118, 119) of each pair of base plates ((11/53, 11/54; 93/118, 93/119) being pierced by a facing hole (55; 120) of predetermined cross-section and dimensions,and the other base plate (11; 93) of each pair of base plates (11/53, 11/54; 93/118, 93/119) comprising, projecting from its contact face (11a; 93a), a centering member (18, 19; 94, 95) of decreasing section in at least two planes perpendicular to said contact face and respectively parallel to axes (x) and (y), starting from a base section of dimensions fitting with those of the facing hole (55; 120) of the other base plate (53, 54; 118, 119),and said base plates being arranged to be brought to face each other so that each centering member (18, 19; 94, 95) partially engages with the facing hole (55; 120), during the raising of the coupling frame (10; 80) generated by actuation of the three-point linkage system (2),means (9; 70, 71, 75) for relative tilting of the two frames (10, 40; 80, 100) are adapted to cause, in the position where the centering members (18, 19; 94, 95) are partially engaged with the facing holes (55; 120), a tilting during which said centering members serve as a pivot for said tilting. 5. The coupling device according to claim 4, wherein the means for relative tilting consists of an actuating cylinder (9) arranged to constitute the central arm of the linkage system (2). 6. The coupling device according to claim 5, wherein the relative lock comprises: at least one locking arm (22) pivoting on the coupling frame (10), provided with a hook-shaped end (23) that engages, in the paired position of the two frames (10, 40), with a facing catch member (52) integral with the coupled frame (40),means (35) for actuating each locking arm (22), able to pivot it between an unlocked position and a locked position where the facing catch member (52) is locked in place. 7. The coupling device according to claim 5, wherein the relative lock comprises an actuating cylinder (87) carried by the coupling frame (80) so that it extends along a transverse axis orthogonal to axis (x), provided with a rod (87a) forming a bolt adapted to cooperate with a catch (109, 110) mounted on the coupled frame (100), when the two frames (80, 100) are in the paired position. 8. The coupling device according to claim 4, wherein the means for relative tilting comprise: at least one pivot arm (70, 71) pivoting on the coupling frame (10) about a pivot axis at least substantially parallel to axis (y), positioned at a base of said coupling frame, each of said pivot arms having a hook-shaped end (73, 74) that engages, in the position where the centering members (18, 19) are partially engaged with the facing holes (55), with a facing catch member (52) integral with the coupled frame (40),means (75) for actuating each pivot arm (70, 71), adapted to pivot the pivot arm so that the respective hook-shaped end (73, 74) travels a path in which the respective hook-shaped end engages the facing catch member (52), causing the coupling frame (10) to tilt until the adjoining position of the two frames (10, 40) is obtained. 9. The coupling device according to claim 8, wherein the hook-shaped end (73, 74) of each pivot arm (70, 71) and each associated catch member (52) have complementary shapes adapted to lock the two frames (10, 40) in position. 10. The coupling device according to one of claim 8 or 9, comprising an actuating cylinder (9) arranged to constitute the central arm of the linkage system (2). 11. The coupling device according to one of claims 4 to 9, wherein each hole (55; 120) made in a base plate (53, 54; 118, 119) has a countersink (56) where it joins the contact face (53a; 118a) of said base plate. 12. The coupling device according to claim 11, wherein: each hole (55; 120) made in a base plate (53, 54; 118, 119) consists, in the extension of the countersink (56), of a hole of constant transverse cross-section,each centering member (18,19; 94, 95) comprises, starting from the contact face (11a; 93a) of the base plate (11; 93), a base (20; 96) of constant transverse cross-section fitting with that of the facing hole (55; 120). 13. The coupling device according to claim 12, wherein each centering member (18, 19; 94, 95) comprises a cylindrical base (20; 96) extending in a section (21; 97) of conical or hemispherical shape, each hole (55; 120) made in a base plate (53, 54; 118, 119) having a circular cross-section of a diameter fitting with that of the base (20; 96) of the centering members (18, 19; 94, 95). 14. The coupling device according to one of claims 4 to 9, wherein the coupling frame (10; 80) and the coupled frame (40; 100) comprise front faces (10a, 49a; 80a, 100a) for the contact of said frames in a final adjoining position. 15. The coupling device according to claim 14, wherein: one of the frames (10) comprises, projecting from a front contact face (10a), at least one centering pin (26, 27) of decreasing cross-section along at least one plane perpendicular to said front contact face and parallel to the longitudinal axis (x),the other frame (40) comprises, for each centering pin (26, 27), a hole (57, 58) opening onto a front face (49a), having a cross-section suitable for receiving said centering pin. 16. The coupling device according to claim 15, wherein each centering pin (26, 27) comprises two flat portions (30) in planes parallel to plane (x, y), each associated hole (57, 58) having flat bearing surfaces for each of said flat portions. 17. The coupling device according to claim 15, wherein each centering pin (26, 27) is arranged on an upper portion of the coupling frame (10). 18. The coupling device according to one of claims 4 to 9, comprising: complementary drive elements (36, 61) respectively positioned on the coupling frame (10) and coupled frame (40) and both adapted to be coupled to universal drive shafts (32, 60) equipping the agricultural tractor (1) and the agricultural implement (3),means (34) for the relative displacement of the complementary drive elements (36, 61), which are able, in the paired position of the two frames (10, 40), to move them between an engaged position where two universal drive shafts (32, 60) are coupled, and a disengaged position. 19. The coupling device according to claim 18, wherein: the drive element (61) of the coupled frame (40) is translationally fixed on said coupled frame,the drive element (36) of the coupling frame (10) is arranged within a track (33) having a guide axis parallel to the longitudinal axis (x), attached to said coupling frame, said drive element being associated with means for translational movement (34) able to move said drive element within the track (33). 20. The coupling device according to claim 18, wherein the drive elements respectively comprise a shaft (38) provided with splines and a shaft (63) pierced with a longitudinal bore provided with splines, said splines forming complementary engaging teeth.
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이 특허에 인용된 특허 (3)
Langenfeld Joseph W. (Onawa IA) Westendorf Neal W. (Onawa IA), Automatic hitch device.
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