DK200701066A - Coupling mower - Google Patents

Claims (37)

Trailed coupling mower with a machine frame (2) supported on the ground via a chassis (3), which can be connected to a tractor or the like via a drawbar (15) and which carries at least two mowing units (5, 6, 7) , which in mowing operation for adaptation to the ground relative to the machine frame (2) is mounted movably in height, characterized in that the mowing units (5, 6, 7) in mowing operation for adaptation to the ground relative to the machine frame (2) can be inclined. around a horizontal transverse shaft (3), so as to be able to exert nodal movements, and that a tilt control device (31) is provided for controlling the nodal movements in dependence on the height movement of the mowing units (5, 6, 7). Coupling mowing machine according to the preceding claim, wherein the inclination control device (31) is designed such that the mowing units (6, 7) exert a nodal movement during an upward movement, which provides a more powerful lifting of a section of the mowing units (6, 7 lying in the forward direction). ) than a section lying at the rear in the direction of feed, and in the case of downward movements exerts a nodal movement which lowers the front section of the mowing units (6, 7) more strongly than a further section lying at the rear. Coupling mower according to one of the preceding claims, wherein the inclination control device (31) is provided with hydraulic inclination control means (32), and provides a hydraulic forced control of the inclination control means (32). Coupling mower according to the preceding claim, wherein a sensing cylinder (33, 34) performs adjusting movements corresponding to the height movement of the mowing units (6, 7) and is flow-connected to the hydraulic inclination control means (32) and forms a pressure source for operating the inclination control means (32). ). Coupling mowing machine according to one of the preceding claims, wherein the two mowing units (6, 7) in connection with their nodal movements for earth adaptation are individually inclined independently of the slope. Coupling mower according to the preceding claims 1 to 4, wherein the two mowing units (6, 7) in connection with their nodal movements for earth adjustment are jointly inclined. Coupling mowing machine according to one of the preceding claims, wherein the two mowing units (6, 7} are suspended on a preferably common inclined frame (35), which is mounted so that it can tilt, about a horizontal transverse axis (30) of the machine frame (2). ). Coupling mower according to the preceding claim, wherein the two mowing units (6, 7) are suspended on support arms (8, 9) which, projecting to the side, are fixed to the tilting frame (35) so that they can pivot up and and where the two support arms (8, 9) can be rotated upwards in the transport position and / or can be unloaded by at least one preferably hydraulic lifting and / or unloading actuator (33, 34). Coupling mower according to one of the two preceding claims, wherein the tilting frame (35) can be caused to tilt by a preferably hydraulic tilting actuator (32), so as to make nodding movements. Coupling mower according to the two preceding claims, wherein the tilt activator (32) is coupled to at least one lifting and / or unloading activator (33, 34) such that movement of the lifting and / or unloading activator (33, 34) is converted into a movement of the tilt activator (32). Coupling mower according to the preceding claim, wherein the inclination actuator (32) and the lifting and / or unloading actuators (33, 34) are each designed as a hydraulic cylinder, and are interconnected by a hydraulic circuit, in which an upward movement of the support arms (12, 13 ) causes a pressure at the pressure fluid flowing from the lifting and / or unloading activator (33, 34) into the inclination activator (32). Coupling mowing machine according to one of the preceding claims, wherein the mowing units (6, 7) can be relieved by weight by a relief guide device in connection with their nodal movements in a inclination zero position, preferably a relief spring device is provided between the inclination frame (2) and the machine frame (35). ), in particular coupled in parallel with the tilt activator (32). Coupling mower according to one of the preceding claims, wherein the mowing units of a lifting device (36) are connected to the machine frame (2), and can be lifted and lowered at the lifting device relative to the machine frame, and the lifting device (36) includes a rod device (37), whose articulation point on the machine frame and articulation point on the mowing devices are provided so that the mowing devices, by lifting the lifting device (36), provide a nodal movement about a horizontal transverse shaft. Coupling mower according to the preceding claim in connection with claim 6, wherein the at least one lifting and / or unloading activator (33, 34) is connected to a lifting activator (38) in such a way that a movement of lifting and / or the relief actuator (33, 34) is converted into a movement of the lifting actuator (38) and thus into a nodal movement of the mowing units (6, 7). Coupling mower according to one of the two preceding claims, wherein the rod device (37) of the lifting device (36) is provided at least with an underlying rod (39) and an overlying rod formed by the inclination activator (32). Coupling mower according to one of the preceding claims, wherein a third mowing unit (5), which is provided in relation to the feed direction in front of or behind the two previously mentioned mowing units (6, 7), and the third mowing unit (5) is suspended by a rod device on the machine frame (2), which rod device is provided with the first rod (110), which is articulated to the machine frame (2), and which is guided in an upright plane facing the feed direction, and a second and a third rod (112). , 113), each of which on the one hand is articulated to the first rod (110) and on the other hand is articulated to a bearing unit carrier (102), so that the bearing unit carrier at the second and the third rod (112, 113) as a four-joint mechanism is suspended in the first rod (110) and can be moved up and down, and the first rod (110) is mounted about an axis of rotation (118) extending transversely to the feed direction on the machine frame (2). Coupling mower according to the preceding claim, wherein a control device (119) is provided for controlling the swing position of the first rod (110) depending on the height position of the machine unit carrier (102) relative to the first rod (110). Coupling mower according to the preceding claim, wherein the control device (119) is designed such that the first rod (110) on one side and the second and the third rod (112, 113) on the other side pivot opposite each other. Coupling mower according to one of the two preceding claims, wherein the control device (119) is provided with a fourth rod (120), which on one side is articulated to the machine frame (2) and on the other hand is articulated to the other and / or the third rod (112,113). Coupling mower according to the preceding claim, wherein the connection points (114, 115) of the second and third rods (112, 113) with the first rod (110) are provided between the connection point (132) of the fourth rod (120) of the second and the third rod (112, 113) and the connection point (117) of the bearing unit carrier (102) on the second or third rod (112,113). Coupling mower according to claim 16 or 17, wherein the control device (119) is provided with a piston-cylinder unit, which on the one hand is articulated to the first rod (110) and on the other hand is operatively connected to the machine frame (2). Coupling mower according to the preceding claim, wherein the control device (119) is provided with a distance meter for measuring the distance between the third mowing unit (5) and the first rod (110) and / or an inclination meter for measuring the inclination as the second or third rod (112, 113) and wherein the piston-cylinder unit is controlled depending on the measured distance and / or the measured inclination. Coupling mower according to one of the preceding claims, wherein the drawbar (15) is mounted rotatably about the upright frame pivot shaft (21) for the machine frame (2), and at its front end is provided with a coupling piece (16) with which the drawbar (15) rotatable about an upright pull point pivot shaft (19) can be attached to a tractor (14), and further with a first adjusting link (22) for adjusting a desired frame swing angle (a) for the machine frame (2) relative to the drawbar (15), and where the drawbar (15) is provided with a front drawbar section (15b) with the coupling piece (16), which section rotatable about an upright drawbar crankshaft (24) is connected to a rear drawbar section (15a), and wherein a guide device (23) is provided for controlling the angular position of the front drawbar section (15b), and wherein the guide device (23) includes a first guide means (23a, 25) for controlling the drawbar angle (β) between m the front drawbar section (15b) and the rear drawbar section (15a) depending on the set frame swing angle (a) between the machine frame (2) and the drawbar (15) in working operation. Coupling mower according to the preceding claim, wherein the first guide means (23a, 25) in a mode of operation holds the front drawbar section (15b) substantially parallel to a longitudinal axis through the machine frame (2). Coupling mower according to one of the preceding claims 23 or 24, wherein the first guide means is provided with a preferably hydraulic guide joint for adjusting the guide rod bend angle (β) between the rear and the front guide rod sections (15a, 15b), Coupling mower according to one of the preceding claims 23 to 25, wherein the first control means (23a, 25) can be activated and deactivated. Coupling mower according to one of the preceding claims 23 to 26, wherein the guide means (23) is provided with a second guide means (23b, 26} for controlling the hinge angle (γ) between the front drawbar section (15b) and the tractor (14) independently of the angular position between the rear drawbar section (15a) and the front drawbar section (15b) and / or the frame swing angle (a) between the machine frame (2) and the drawbar (15). Coupling mower according to the preceding claim, wherein the two control means (23b, 26) are driven in dependence on a variable operating parameter of the coupling mower (1) and / or the tractor (14), in particular steering deflection of the tractor (14). Coupling mower according to one of the two preceding claims, wherein the second guide means (23b, 26) limits the pivot angle (y) of the front drawbar section (15b) relative to the tractor (14), by being below a predetermined steering angle of the tractor (14) and / or forcibly set a pre-set load, in particular approximately with the tractor longitudinal axis parallel position. Coupling mower according to one of the three preceding claims, wherein the second control means (23b, 26) can be activated and deactivated. Coupling mower according to one of the preceding claims 23 to 30, wherein the control device (23) is provided with a third control means for controlling the drawbar angle (β) between the rear drawbar section (15a) and the front drawbar section (15b) depending on a variable operating parameters of the coupling mower (1) and / or the tractor (14), in particular a feed speed, a feed direction, a machine and / or tractor inclination, a work unit position, a work unit speed and / or a steering angle of the tractor. Coupling mower according to the preceding claim, wherein the three control means can be deactivated and activated. Coupling mower according to one of the preceding claims 23 to 32, wherein the coupling piece (16) includes a towbar connecting piece which is adapted to the towbar (18) on the tractor (14). Coupling mower according to one of the preceding claims 23 to 33, wherein the front drawbar section (15b) is shorter than the rear drawbar section (15a). Coupling mower according to the preceding claim, wherein the front drawbar section (15b) has a length which amounts to approx. 1/3 of the length of the rear drawbar section (15a), Coupling mower according to one of the preceding claims 23 to 35, wherein the drawbar (15), in particular the rear drawbar section (15a), is designed so that the length can be changed, in particular by telescopic action. Coupling mower according to the preceding claim, wherein the drawbar (15) is provided with a telescopic device (27) for changing the length of the drawbar (15), and the control device (23) is provided with a fourth control means for controlling the telescopic device (27) depending on a operating parameters of the coupling mower, in particular depending on the frame swing angle between the drawbar (15) and the machine frame (2).