• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    a tarpaulin for a combined, the tarpaulin including a display frame adapted for combining. a harvester assembly includes a plurality of sections and a plurality of operable belts for feeding the cultivation material to the combine. the tarp is operable in a first mode allowing the plurality of sections to float relative to the display frame for ground tracking during harvesting, and in a second mode in which the display frame is raised to lift and support the harvester set to be spaced over the ground. A hydraulic leveling system includes at least one leveling actuator. A valve is operable in response to the movement of the tarmac in the second mode to direct pressurized hydraulic fluid to at least one leveling actuator to automatically level the plurality of harvester assembly sections when in the second mode.
    公开号:BR102018071164A2
    申请号:R102018071164-4
    申请日:2018-10-15
    公开日:2019-05-07
    发明作者:Michael L. Vandeven；Paul D. Marvin
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    “CANVAS SPINDLE FOR A COMBINATION, AND, METHOD FOR LEVELING THE FIRST AND SECOND FINS OF A HARVESTER COLLECTOR SET IN A COMBINED”
    FUNDAMENTALS [001] The description refers to spikes for combined harvesters, and more particularly to canvas spikes having separate side fins for tracking the soil and canvas belts to feed crops cut in a feed chamber.
    SUMMARY [002] The description provides, in one aspect, a canvas spike for a combination. A display frame is adapted for display to the combined. A harvester set includes a plurality of sections and a plurality of operable belts for feeding the growing material to the combined. The canvas spigot is operable in a first mode that allows the plurality of sections to float in relation to the display frame for tracking the soil during harvest. The canvas spigot is further operable in a second mode in which the display frame is raised to lift and support the combine harvester to be spaced above the ground. A hydraulic leveling system includes at least one leveling actuator. A valve is operable in response to movement of the tarpaulin in the second mode to direct pressurized hydraulic fluid to at least one leveling actuator to automatically level the plurality of sections of the combine set when in the second mode.
    [003] The description provides, in another aspect, a canvas spike for a combination. A central section includes a display frame adapted for display to the combined. The central section operable to feed the cultivation material in a posterior direction in the harvester. The first and
    Petition 870180140968, of 10/15/2018, p. 46/70 / 14 second fins extend in opposite lateral directions from the central section. The first and second fins comprise the respective canvas belts that can be operated by the respective hydraulic and operable motors to feed the cultivation material towards the central section. Each of the first and second fins is independently supported in relation to the central section by a resilient float element. The first and second hydraulic fin leveling cylinders are coupled, respectively, to the first and second fins and operable when energized to exert the respective lifting forces to the first and second fins to level the first and second fins. A cutting bar is positioned on an anterior edge of the canvas spike transversal to the central section and to the first and second fins. The cutter bar is operable to alternate while growing material is cut from the ground. A hydraulic circuit includes a pump having an outlet side operatively coupled to the respective hydraulic motors to drive the respective belt belts when the first and second fins engage the soil for harvesting. A hydraulic circuit valve is operable from a first position to a second position, in response to the elevation of the first and second fins of the ground, to connect the first and second hydraulic leveling cylinders of the fin to the outlet side of the pump.
    [004] The description provides, in yet another aspect, a method of leveling the first and second fins of a combine harvester of a combined canvas spike. The combination is operated with the canvas spike on the ground and the first and second fins supported resiliently from a central section of the combine set. The combination is operated to achieve an elevated state of the tarpaulin by raising the center section of the ground to remove the ground support from the first and second fins, so that the center section is supported by a stop on a fixing frame that holds Combined to combined canvas spigot, leaving the first and second fins independently arranged
    Petition 870180140968, of 10/15/2018, p. 47/70 / 14 in cantilever from the central section. The first and second fin leveling actuators are automatically energized in the raised state, each operating to exert a lifting force on one of the respective first and second fins to obtain and maintain a level orientation of the first and second fins.
    [005] Additional aspects are presented in the detailed description and in the attached drawings.
    BRIEF DESCRIPTION OF THE DRAWINGS [006] Figure 1 is a perspective view of a combined harvester including a canvas spike having a flotation system in accordance with an embodiment of the present description.
    [007] Figure 2 is a rear view of the canvas spike of Figure
    1, together with schematically illustrated hydraulic flotation circuits connected to resilient flotation elements of the canvas spike.
    [008] Figure 3 is a detailed view of the tarpaulin shown in Figure 2, further illustrating a connecting joint and a floating joint provided between a fin and a central section of the tarpaulin. The fin is shown in a downward pivoted position.
    [009] Figure 4 is a schematic illustration of the canvas spike that shows an inclination profile to be corrected automatically when the canvas spike is lifted from the ground.
    [0010] Figure 5 is a schematic side view of the canvas spike during normal float operation.
    [0011] Figure 6 is a schematic side view of the canvas spike when elevated from the ground by lifting the display frame.
    [0012] Figure 7 is a schematic view of a hydraulic circuit including a valve to automatically energize hydraulic cylinders from
    Petition 870180140968, of 10/15/2018, p. 48/70 / 14 fin leveling.
    DETAILED DESCRIPTION [0013] Before any embodiments are explained in detail, it should be understood that the description is not limited in its application to the details of construction and the arrangement of the components set out in the description below or illustrated in the attached drawings.
    [0014] A combined harvester 100 (or simply “combined”) is shown in Figure 1. A removable spike 104 is provided at a front end of the combined 100 to cut crops and feed crops in a housing 108, or “feed chamber ”, From the combined 100 for further processing of the harvest within the combined 100 (ie threshing the cultivated grains recovered from the plant stems and separating or cleaning the cultivated grains from the gluma so that only the cultivated grains are harvested) . Threshing and separation can be accomplished by any of a variety of practical mechanisms. The spigot 104 of the illustrated construction is a flexible spigot in which the first and second fins 112 are movably supported on opposite side sides of a central section 116 that attaches the spigot 104 to the combination housing 108. The spigot 104 includes a rotating coil 120 to engage vertical crops for dispensing to a spigot table 104. A cutter bar 124 on a front edge of spigot 104 operates (for example, alternating a plurality of overlapping knives) to cut crop material close to the ground to size which is engaged by coil 120. Spigot 104 is a canvas spigot in which the table is equipped with continuous straps to feed the crop material cut in housing 108. For example, each fin 112 includes at least one canvas belt side 128 operable to transmit the crop material cut inwards towards the central section 116. The central section 116 also includes operable feeder belt belt 132, in a posterior direction parallel and opposite to the
    Petition 870180140968, of 10/15/2018, p. 49/70 / 14 direction of travel of the combined and perpendicular to the side canvas belts 128, to transmit the cut cultivation material to the housing of the combined 108. The central section 116 and the fins 112 form an operable harvester set for cutting the cultivation material from the soil and pass it to the housing of the combined 108. The spigot 104 additionally includes a display frame 118 in the central section 116 and adapted to removably couple the spigot 104 to the housing of the combined 108. From From the combined 100 cab, an operator can control various aspects of the operation of the spike 104, including lifting the spike 104 from the ground at the conclusion of a harvest cycle. [0015] Each of the fins 112 is pivotally supported by the central section 116 to allow independent movement of the two fins 112 in relation to the central section 116. In this regard, a respective connecting joint 136 is provided between the central section 116 and each fin 112 to connect it for pivot movement. Connecting joints 136 can be provided towards a rear end of the spike 104, and a direct pivot connection can also be established towards the front end between the center section 116 and each fin 112. The cutter bar 124, which comprises both fins 112 and the central section 116 can be flexed to accommodate the pivoting movement of the fins 112 in relation to the central section 116. This spigot 104 thus allows a consistent low cut of the growing material from the soil, even in uneven soils. Each fin 112 is mainly supported by a buoyancy arrangement including at least one resilient buoyancy element 140, while a small fraction of the weight of fin 112 is applied to the ground (for example, by a depth adjusting wheel and / or platform 143 in the lateral outer edge of the fin). Each resilient float element 140 is operable to produce a force output that varies with the position of the fin 112 relative to the center section 116. However, each of the resilient float elements 140
    Petition 870180140968, of 10/15/2018, p. 50/70 / 14 can be coupled in a manner that allows a relatively constant buoyancy force to be applied to fin 112 while encountering various changes in the terrain during harvest, despite changes in the actual force output of the resilient buoyancy element 140. Figure 2 provides an overview of the fin float system, which includes two independent float circuits or subsystems, each of which includes the resilient float element 140 (for example, a single acting hydraulic cylinder) coupled via a hydraulic line to an accumulator 144 (for example, an accumulator loaded with gas). The details of the flotation system and its operation are discussed in greater detail below, after further discussion of the connection structures between the central section 116 and the fins 112.
    [0016] Figure 3 illustrates a connecting joint 136 for coupling one of the fins 112 to the central section 116, with the understanding that the other fin 112 is supported by another connecting joint 136, which is a mirror image of the connecting joint illustrated 136 and conforms to the same description. The fin 112 is shown in an operational position pivoted downward in Figure 3. The connecting joint 136 is provided as a four-bar joint consisting of a frame portion 150 of the fin 112, a frame portion 154 of the center section 116 and two connecting articulators 158A, 158B between them. The two connecting articulators 158A, 158B are coupled to two respective pivots 160A, 160B in the frame part 154 of the central section 116 and coupled to two respective pivots 164A, 164B in the frame portion 150 of the fin 112. The floating joint 142 that carries the resilient flotation element 140 and is separately coupled between the frame portions 150, 154. As will become more apparent from the description below, the flotation joint 142 responds passively to the movement of the fin 112 through the connecting joint 136 to modify the support relationship between the resilient flotation element 140 and fin 112. By passive, it is understood that it is merely reactive or responsive
    Petition 870180140968, of 10/15/2018, p. 51/70 / 14 in a predetermined way, instead of being controlled in an active or variable way.
    [0017] The resilient float element 140 is extensible to vary in length between a first end or lower end 170 and a second end or upper end 172. The first and second ends 170, 172 can be provided as pivots similar to those of the hinge joint. connection 136, but are separated and spaced from each of the pivots 160A, 160B, 164A, 164B of connection articulators 158A, 158B. In addition, only one of the first and second ends 170, 172 of the resilient buoyancy element 140 is provided in a fixed position on any of the frame portions 150, 154 (i.e., the upper end 172 is fixed on the fin frame portion 150 ). A primary articulator 176 of the float joint 142 has a first end or lower end pivotally coupled to both the first end 170 of the resilient float element 140 and a secondary articulator 180 of the float joint 142. A second end or upper end of the primary articulator 176 is pivotally coupled to an additional pivot, or third pivot 184, in the frame portion 154 of the central section 116. The third pivot 184 is spaced above and laterally (to the flap side) of both other pivots 160A, 160B in the frame portion 154. The second end 172 of the resilient float element 140 defines a pivot joint with the frame portion 150 of the fin 112 and the primary articulator 176, between the first and second ends of the primary articulator 176 (i.e., between the pivot at the lower end 170 and the third pivot 184 at the frame portion 154). The pivot joint is retained in the illustrated construction within an elongated hole or slit 188, wherein the second end 172 of the resilient buoyancy element 140, together with the frame portion 150 attached thereto, can traverse longitudinally along a distance between the ends of the slot 188. The ends of the slot 188
    Petition 870180140968, of 10/15/2018, p. 52/70 / 14 can function as displacement limits (for example, keeping each fin 112 within a range of +/- 5 degrees from the horizontal neutral alignment with the center section 116). The secondary articulator 180 of the floating joint 142 is pivotally coupled to the first end 170 of the resilient float element 140 and still pivotally coupled to the fin frame portion 150 in an additional pivot, or fourth pivot 190. The fourth pivot 190 is located in a position on the fin frame portion 150 between the two pivots 164A, 164B to which the two connecting articulators 158A, 158B are coupled.
    [0018] Although Figure 3 illustrates fin 112 in the downward pivoted position, it should be understood that fin 112 is also free to assume a level or neutral orientation with respect to central section 116, or an upward pivoted position. During normal use on uneven ground, both fins 112 will float independently in the center section 116, assuming both positions pivoted up and down to varying degrees within the permitted range of motion. The flotation system, including the resilient flotation element 140 for each fin 112, provides passive fin flotation that responds naturally to uneven ground conditions, without actively monitoring or adjusting the resilient flotation element 140. Instead, when a fin 112 encounters an upward curve in the ground, a portion of contact with the ground, such as the depth adjusting wheel or pallet 143, is propelled upward by the ground. The flotation system automatically responds to this disturbance by allowing deflection upward of fin 112. In the case of a hydraulic flotation system as illustrated, this includes an extension of the hydraulic cylinder provided as the resilient flotation element 140. The extension increases the volume of fluid inside the hydraulic cylinder and allows the transfer of additional hydraulic fluid from the associated accumulator 144 to the hydraulic cylinder. The pressure of the hydraulic fluid, and thus the stored energy, within the flotation element
    Petition 870180140968, of 10/15/2018, p. 53/70 / 14 resilient 140 is thus reduced. However, to avoid exerting a reduced buoyancy force on the fin 112 while the fin 112 remains on the upward curve, the floating joint 142 may automatically operate on some constructions during the movement of the fin to compensate for the reduction in energy stored within the resilient buoyancy 140 in order to maintain a relatively constant buoyancy force exerted on fin 112. In other words, buoyancy joint 142 adjusts the mechanical advantage of resilient buoyancy element 140 to fin 112 to match the effect of reducing energy stored in the even, thus subduing a change in a total fin buoyancy force applied to the fin by the resilient buoyancy element. This is achieved through the pivot joint to bring an operative geometric axis A defined by the resilient float element 140 for closer alignment, or in alignment, with the third pivot 184 in the frame portion 154.
    [0019] At the end of a harvest cycle, the operator in the combined 100 acts as a lifting device (not shown) to lift the spike 104 from the ground so that the combined 100 can be directed to a starting point of another harvest cycle or back to a storage location without incurring contact with the ground. Placing the combination 100 in the raised state is achieved by lifting the central section 116 of the ground to remove the ground support from the first and second fins 112 so that the central section 116 is supported by a stop 204 on the display frame 118, leaving the first and second fins 112 independently arranged in cantilever from the central section 116. This represents a secondary mode of operation in contrast to the primary or harvester mode. Because the float system of the earwheel 104 is designed to have a certain amount of weight from each fin 112 supported by the soil during harvest, the fin 112 will tend to tilt down as shown in Figure 4 when placed in the second mode, or elevated state . However, to eliminate such a tendency
    Petition 870180140968, of 10/15/2018, p. 54/70 / 14
    112 tilt, the spigot 104 is provided with an autonomous leveling system including leveling actuators 210 operable to emit lifting forces upwards F on each fin 112. In particular, the leveling system can be provided as a hydraulic leveling system including a leveling actuator 210 such as a hydraulic cylinder for each fin 112. The hydraulic leveling system can be hydraulically isolated from the resilient buoyancy elements 140. However, the hydraulic leveling system can be provided as a selectively active portion of a hydraulic system 214 that drives the side canvas belts 128 and / or other devices within the spike 104.
    [0020] As shown in Figure 3, each leveling actuator
    210 is incorporated in the float joint 142, being trapped between the primary articulator 176 and the fin frame portion 150. As described in more detail below, supplying the leveling actuator 210 with pressurized fluid causes an extension of the actuator 210, which results in leveling of the respective fin 112. Each leveling actuator 210 can have a total stroke limit that corresponds to a level condition between the respective fin 112 and the center section 116. For example, the total stroke limit can be determined by a maximum extendable length determined by both an internal and an external stop in relation to the leveling actuator 210. As such, pressure control or precision length and associated measurements or control strategies are not necessary to consistently and reliably level the fins 112. Instead, leveling actuators 210 are controllable in a binary manner, either as OFF as ON, and are normally OFF. When OFF, leveling actuators 210 are not energized, and do not influence the position of fins 112 pivot. When ON, leveling actuators 210 are energized and force fins 112 to the level condition. In some constructions, the fins 112 remain supported
    Petition 870180140968, of 10/15/2018, p. 55/70 / 14 resilient by the resilient float elements 140 when the leveling actuators 210 are ON, such that some up / down movement is possible in the presence of external forces, but the fins 112 remain generally level since the spike 104 is elevated from the ground and is not subject to the forces following the ground.
    [0021] With reference to Figure 7, the hydraulic system 214 includes a valve 220 operable in response to the movement of the spigot 104 in the elevated state to direct the pressurized hydraulic fluid to the leveling actuators 210. The valve 220 can be a proximity valve having an actuator 224 (for example, a push button actuator) that is positioned to be operated by raising the spike 104 to the elevated state as shown in the sequence of Figures 5 and 6. The actuator 224 is shown in one location exemplary in Figure 5. Valve 220 can be a two-position valve, the operation of which is discussed in more detail below. Returning to Figure 7, the hydraulic system 214 includes a pressure generating device, such as a pump 228 operable by an M motor that can be an electric motor, propellant for combustion of fuel, etc. An inlet side of pump 228 is coupled to a tank line 232 having relatively low pressure hydraulic fluid, and pump 228 operates to dispense relatively high pressure hydraulic fluid on its outlet side, thus defining a pressure stringer 230 The tank line 232 can be in fluid communication with a hydraulic fluid tank provided in the combined 100, for example, through a hydraulic coupling of the spike 104. The hydraulic system 214 still includes the first and second hydraulic motors 236, 238 in fluid communication with the pressure stringer 230 to be supplied with pressurized hydraulic fluid from the pump 228. The hydraulic motors 236, 238 are mechanically coupled to the side canvas belts 128 to drive their movement. Hydraulic motors 236, 238 are illustrated as being coupled in series with the first motor
    Petition 870180140968, of 10/15/2018, p. 56/70 / 14
    236 discharging to the second engine 238 and the second engine 238 discharging to the tank line 232, but other arrangements are optional, such as parallel circuits driven by a pump or by tandem pumps. It is also noted that the circuit supplied by the pressure stringer 230 may include one or more additional valves or operating devices not shown or discussed in detail here. For example, the circuit supplied by the pressure stringer 230 can include one or more hydraulic actuators for any combination of: feeder belt drive, coil drive, coil lift, auger drive, auger adjustment, wheel adjustment depth regulator, etc.
    [0022] Turning to the right side of Figure 7, valve 220 is shown to include two ports 240A, 240B on a first side thereof, switched coupled to a port 242 on a second side thereof. For convenience, the two ports 240A, 240B are referred to as the side entry doors, while port 242 is referred to as the side exit door. The first inlet side port 240A is coupled to the pressure stringer 230 to communicate with a supply of hydraulic fluid pressurized by pump 228. The second inlet side port 240B is in communication with tank line 232. Valve 220 is normally polarized to the position shown in which valve 220 blocks fluid communication between the first inlet side port 240A and the outgoing side port 242. Instead, outgoing side port 242 is in fluid communication with the second side port inlet 240B in the normally polarized state of valve 220. The side outlet port 242 is in communication with the respective leveling actuators 210 through a check valve 248 and a flow divider or “T” 252. Although the check valve 248 is configured to prevent backflow from leveling actuators 210 to valve 220 when leveling actuators 210 are e energized, thus maintaining a captive amount of pressurized fluid
    Petition 870180140968, of 10/15/2018, p. 57/70 / 14 in the subcircuit of the leveling actuators 210, the check valve 248 is additionally provided with a pilot input 256 in connection with the pressure beam 230. Thus, when valve 220 is not actuated by the elevated state of the spigot 104 , the check valve 248 is opened by pressure at the pilot inlet 256 so that the hydraulic fluid can drain from the leveling actuators 210 through the second inlet side port 240B to the tank line 232. This ensures that the presence of the actuators leveling device 210 remains effectively transparent in relation to the normal operation of the spike 104 for the combine in the first mode.
    [0023] In the operation of the combined 100 with the earring 104, the operator completes a harvest cycle and raises the earring 104 to the elevated state so that it is spaced from the ground. This is shown schematically as the transition from Figure 5 to Figure 6, and as shown here, lifting spike 104 off the ground causes the additional weight of spike 104, initially supported by the ground, to be carried by the display frame 118. This This in turn results in a downward deviation of the central section 116 in relation to the display frame 118, thus the proximity valve 220 acting by contact of a portion of the spigot 104 with the valve actuator 224 when the stop 204 is engaged to support the central section 116. Before actuation of the valve, the leveling actuators 210 are inactive, being coupled to the tank line 232 through valve 220. After actuation of the valve, the outlet side port 242 is placed in fluid communication with the pressure stringer 230 through the first side entry port 240A. The pressurized fluid is supplied to the leveling actuators 210 through the check valve 248 and the T 252 so that the leveling actuators 210 are placed in the active or ON state. As such, the leveling actuators 210 are subjected to the full stroke of their maximum permitted length, which exerts forces F to level the fins 112 in relation to each other and to the central section 116. The non-return valve
    Petition 870180140968, of 10/15/2018, p. 58/70 / 14
    248 blocks the escape of the pressurized fluid in the lines that supply the leveling actuators 210. Thus, the system will automatically retain the fins 112 in the level condition, with little or no energy expenditure in progress, as long as the spike 104 remains elevated from the ground. . This not only provides an improved appearance of the spigot 104 in the periods between active harvesting, but also improves the clearance of the soil, especially in the external extension of the fins 112. Valve 220 effectively defines a normally latent subcircuit, selectively actuable to supply the actuators of leveling 210 when removing fluid from the hydraulic circuit with hydraulic motors 236, 238 that drive the side canvas belts 128. Any adverse effect on the operation of the side canvas belts 128 is generally momentary, limited in quantity and timed to occur shortly after completion of a harvest cycle so that the combine's operations remain unchanged.
    [0024] Although specifically described here as an autonomous leveling system including a pair of leveling actuators 210 to level a pair of fins 112 relative to each other and a central section 116 between them respectively, it should be understood that in some respects , the invention can be implemented with at least one leveling actuator provided in accordance with the present description for leveling at least one section of a combined earring in relation to another.
    [0025] Various features and advantages are set out in the following claims.
    权利要求:
    Claims (20)
    [1]
    1. Canvas spike for a combination, the canvas spike characterized by the fact that it comprises:
    a display frame adapted for display to the combined;
    a combine harvester including a plurality of sections and a plurality of operable belts to feed the growing material to the combined, the canvas spike being operable in a first mode that allows the plurality of sections to float in relation to the display frame for the tracking of the soil during the harvest, and the canvas spike being operable in a second mode in which the display frame is raised to raise and support the combine harvester to be spaced above the ground;
    a hydraulic leveling system including at least one leveling actuator; and a valve operable in response to movement of the tarpaulin in the second mode to direct pressurized hydraulic fluid to at least one leveling actuator to automatically level the plurality of sections of the combine assembly when in the second mode.
    [2]
    2. Canvas spigot according to claim 1, characterized in that the plurality of sections of the harvester set includes first and second fins that extend in opposite lateral directions from a central section, each of the first and second fins comprising an operable canvas belt to feed the growing material towards the center section and the central section operable to feed growing material to the combined.
    [3]
    3. Tarpaulin according to claim 2, characterized by the fact that each tarpaulin belt is operable by a respective hydraulic motor coupled to a pressure stringer supplied with hydraulic fluid pressurized from a pump.
    Petition 870180140968, of 10/15/2018, p. 60/70
    2/5
    [4]
    4. Canvas spigot according to claim 3, characterized by the fact that the valve is opened during the transition to the second mode to connect the at least one leveling actuator to the pressure stringer.
    [5]
    5. Tarpaulin according to claim 4, characterized by the fact that at least one leveling actuator includes a first operable leveling actuator for leveling the first fin in relation to the central section, and a second operable leveling actuator for leveling the second fin relative to the central section.
    [6]
    6. Canvas spike according to claim 5, characterized by the fact that each of the first and second leveling has a total stroke limit that corresponds to a level condition between the respective fin and the central section.
    [7]
    7. Canvas spike according to claim 1, characterized by the fact that the at least one leveling actuator has a total stroke limit that corresponds to a level condition between the plurality of sections of the harvester set.
    [8]
    8. Canvas spike according to claim 1, characterized in that the valve includes a push button actuator positioned to be actuated to open the valve in response to the movement of the canvas spike in the second mode.
    [9]
    9. Canvas splitter according to claim 1, characterized by the fact that it also comprises a cutting bar positioned on an anterior edge of the canvas splitter transversal to the plurality of sections, the cutting bar operable to cut the growing material a from the ground.
    [10]
    A canvas spike according to claim 1, characterized by the fact that it further comprises a resilient floatable element operable to resiliently support one of the plurality of
    Petition 870180140968, of 10/15/2018, p. 61/70
    3/5 sections of the combine set in relation to another of the plurality of sections of the combine set in both the first and second modes.
    [11]
    A canvas spike according to claim 10, characterized by the fact that the resilient flotation element is a hydraulic cylinder that is hydraulically insulated from the hydraulic leveling system.
    [12]
    12. Canvas spike for a combination, the canvas spike characterized by the fact that it comprises:
    a central section including a display frame adapted to be attached to the combined, the central section operable to feed growing material in a posterior direction of the combined;
    the first and second fins extending in opposite lateral directions from the central section, the first and second fins comprising the respective canvas belts that can be operated by the respective hydraulic and operable motors to feed cultivation material towards the central section, in which each one of the first and second fins is independently supported in relation to the central section by a resilient float element;
    the first and second hydraulic fin leveling cylinders coupled, respectively, to the first and second fins and operable when energized to exert the respective lifting forces to the first and second fins to level the first and second fins;
    a cutting bar positioned on an anterior edge of the canvas spike transversal to the central section and the first and second fins, the cutting bar operable to alternate to cut the growing material from the soil; and a hydraulic circuit including a pump having an outlet side operatively coupled to the respective hydraulic motors to drive the respective belt belts when the first and second fins
    Petition 870180140968, of 10/15/2018, p. 62/70
    4/5 engage the soil for harvesting, where a valve in the hydraulic circuit is operable from a first position to a second position, in response to the elevation of the first and second fins of the soil, to connect the first and second hydraulic cylinders of flap leveling on the pump outlet side.
    [13]
    A canvas spike according to claim 12, characterized in that the resilient float elements that support the first and second fins are passive elements only operable to provide insufficient lifting forces to level the first and second fins.
    [14]
    14. Canvas spike according to claim 13, characterized in that the resilient float elements are hydraulic cylinders separated from the hydraulic circuit.
    [15]
    15. Canvas spike according to claim 12, characterized by the fact that the central section is supported by a stop in the display frame when the first and second fins are raised from the ground and in which the valve includes a button actuator. thrust that can be actuated to drive the valve to the second position in response to the central section that contacts the stop on the display frame.
    [16]
    16. Canvas spike according to claim 15, characterized in that each of the first and second fin leveling hydraulic cylinders has a total stroke limit which corresponds to a level condition for the first and second fins.
    [17]
    17. Canvas spigot according to claim 12, characterized by the fact that the hydraulic circuit includes a tank line coupled to a pump inlet side, in which the first and second fin leveling hydraulic cylinders are open to the tank line through the valve when the valve is in the first position, thus making the first and second fin leveling cylinders
    Petition 870180140968, of 10/15/2018, p. 63/70
    5/5 inactive.
    [18]
    18. Method for leveling the first and second fins of a combine harvester from a canvas spike into a combination, the method characterized by the fact that it comprises:
    operate the combined with the canvas spigot on the ground and with the first and second fins supported resiliently from a central section of the harvester set;
    operate the combination to obtain an elevated state of the tarpaulin by raising the center section of the ground to remove the ground support from the first and second fins, so that the center section is supported by a stop on a display frame that holds the Combined to combined canvas spike, leaving the first and second fins independently arranged in cantilever from the central section; and automatically energizing the first and second fin leveling actuators, each operating to exert a lifting force on one of the respective first and second fins to obtain and maintain a level orientation of both the first and the second fin in the elevated state.
    [19]
    19. Method according to claim 18, characterized by the fact that each of the first and second fin leveling is actuated up to a total stroke limit to obtain the level orientation.
    [20]
    20. Method according to claim 18, characterized in that each of the first and second fin leveling is a hydraulic cylinder, and in which energizing the first and second fin leveling actuators includes withdrawing hydraulic fluid through a switched valve of a hydraulic circuit that drives the canvas belts of the first and second fins with hydraulic motors from a pump.
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    BR102018015398A2|2019-10-01|SWING ARM SUPPORT SYSTEM, METHOD, AND HARVEST BORDER.
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    US3478499A|1969-11-18|Combine harvester
    BR102020006013A2|2020-11-03|HEAD AND FLOATING STRENGTH SETS FOR A HARVESTING MACHINE HEAD, AND, HEAD FOR A HARVESTING MACHINE.
    BR102018067595A2|2019-04-24|AGRICULTURAL HARVEST HEAD FOR AN AGRICULTURAL COMBINATION
    BR102020005706A2|2020-11-03|HEAD AND FLOATING STRENGTH SETS FOR A HARVESTING MACHINE, AND, HEAD FOR A HARVESTING MACHINE
    BR102020005699A2|2020-11-03|HEAD AND FLOATING STRENGTH ASSEMBLY FOR A HARVESTING MACHINE, AND HEAD FOR A HARVESTING MACHINE DRIVE
    ES2327474T3|2009-10-29|CONNECTION OF FOUR BARS FOR Mowers.
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    ES2857718T3|2021-09-29|Agricultural machine
    BR102020007454A2|2020-12-08|HARVESTER, AND, HARVEST PLATFORMS
    同族专利:
    公开号 | 公开日
    US20190110404A1|2019-04-18|
    US10568266B2|2020-02-25|
    EP3473076A1|2019-04-24|
    EP3473076B1|2021-06-02|
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    法律状态:
    2019-05-07| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    优先权:
    申请号 | 申请日 | 专利标题
    US15/785,831|2017-10-17|
    US15/785,831|US10568266B2|2017-10-17|2017-10-17|Self-contained combine draper wing leveler|
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