CN201911089U - Hydraulic system of self-propelled cotton top-cutting machine - Google Patents
Hydraulic system of self-propelled cotton top-cutting machine Download PDFInfo
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- CN201911089U CN201911089U CN 201020631194 CN201020631194U CN201911089U CN 201911089 U CN201911089 U CN 201911089U CN 201020631194 CN201020631194 CN 201020631194 CN 201020631194 U CN201020631194 U CN 201020631194U CN 201911089 U CN201911089 U CN 201911089U
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Abstract
The utility model provides a hydraulic system of a self-propelled cotton top-cutting machine, which is connected with a chassis engine of the self-propelled cotton top-cutting machine. The hydraulic system comprises a front wheel steering hydraulic system of a self-propelled chassis, a top-cutting hydraulic system and an oil tank, wherein the front wheel steering hydraulic system and the top-cutting hydraulic system are respectively connected with the oil tank; the top-cutting hydraulic system comprises two ways of hydraulic loops, shares the same oil tank with the self-propelled chassis, and adopts duplex gear pumps; and one pump is used for regulating a land wheel lifting oil cylinder, a frame floating oil cylinder and a gear motor for driving a knife tool to rotate, and the other pump is used on a lifting oil cylinder of the top-cutting knife tool. By adopting the hydraulic system, the height of a line-separating individual copying and top-cutting execution mechanism can be regulated in a real-time manner, real-time copying of the mechanical cotton top-cutting machine is achieved, the labor intensity of cotton growers is reduced, the cotton top-cutting operation is guaranteed to be completed, and the economic benefits are greatly increased.
Description
Technical field
The utility model relates to a kind of hydraulic system, particularly a kind of hydraulic system of self-propelled cotton topping machine.
Background technology
Abroad in early days to some achievement in research of cotton top-cutting machine tool, suspension type all has a relevant patent with self-propelled, realized that hydraulic control mechanization pinches, therefore at present external Cotton Production process does not see the correlative study that cotton mechanization is pinched abroad at present as yet to the method for the top employing medicine control of cotton.The research that it is mechanical that domestic cotton is pinched is in state at the early-stage, the patent No. is " ZL200620146839.7 ", name is called the Chinese utility model patent of " front-mounted type hydraulic pressure cotton top-cutting machine ", can be when cotton be pinched, in time understand and regulate the height that cotton seedling is pinched, but this topping machine relies on operating personnel to estimate the cotton growing way, raise by elevating mechanism control rotation topping off knife by operating personnel again or reduce, the manual operation apparatus for controlling of lifting, it is bigger influenced by human factor, makes that adjusting is highly inaccurate, untimely; The patent No. is " ZL200720126953.8 ", name is called the Chinese utility model patent of " cotton top-cutting machine of adjusting height automatically ", can realize adjusting the height of pinching automatically to face of land profiling with at cotton plant face of land height, but this mechanism is very complicated, cost is very high, is unfavorable for utilization and extention; Application number is " 200910113205.X ", name is called the disclosed cotton top-cutting machine of Chinese utility application of " profile modeling cotton top-cutting machine ", can measure also profiling to the cotton of differing heights at topographic features, but can not realize the profiling immediately of monomer cotton plants.Simultaneously, above-mentioned cotton top-cutting machine can not be realized the profiling immediately of monomer cotton plants, and power is common tractor, and crack, common tractor ground is 400-450mm, and trafficability characteristic is poor, occurs no marking in the work easily, hits bell, hits peach, damages phenomenons such as cotton leaf.
The utility model content
Technical problem to be solved in the utility model provides a kind of hydraulic system of self-propelled cotton machine of the single file individual profiling of realizing cotton top-cutting machine.
To achieve these goals, the utility model provides a kind of hydraulic system of self-propelled cotton topping machine, be connected with the engine in situ of described self-propelled cotton topping machine, wherein, comprise the front-wheel steer hydraulic system, the hydraulic system of pinching and fuel tank, described front-wheel steer hydraulic system is connected with described fuel tank respectively with the described hydraulic system of pinching.
Above-mentioned hydraulic system, wherein, the described hydraulic system of pinching comprises duplex gear pump, cutter rotating hydraulic system and cutter lifting hydraulic system, described cutter rotating hydraulic system is connected with described duplex gear pump respectively with described cutter lifting hydraulic system, and described duplex gear pump is connected with described fuel tank.
Above-mentioned hydraulic system, wherein, described cutter rotating hydraulic system comprises the land wheel hoist cylinder, oil cylinder and be used to drive the gear motor of cutter rotation floats, described land wheel hoist cylinder, described unsteady oil cylinder and described gear motor are connected with described duplex gear pump with overflow valve by reversal valve respectively, described reversal valve is connected with described overflow valve with described duplex gear pump respectively, and described overflow valve is connected with described fuel tank, described land wheel hoist cylinder, described unsteady oil cylinder and described gear motor respectively.
Above-mentioned hydraulic system, wherein, also comprise stacked unidirectional valve and superposing type Double throttle check valve in the described cutter rotating hydraulic system, described stacked unidirectional valve is connected with described superposing type Double throttle check valve with described land wheel hoist cylinder respectively, and described superposing type Double throttle check valve is connected with described reversal valve.
Above-mentioned hydraulic system, wherein, described gear motor is a plurality of gear motors, is connected with described overflow valve after described a plurality of gear motor parallel connections, described a plurality of gear motors drive a described cutter rotation respectively.
Above-mentioned hydraulic system, wherein, described cutter lifting hydraulic system comprises electro-hydraulic proportional valve and the knife rest hoist cylinder that the stretching speed that is used to control described knife rest hoist cylinder highly lags behind to avoid the cutter adjustment, described electro-hydraulic proportional valve is connected with described knife rest hoist cylinder, and described electro-hydraulic proportional valve is connected with described duplex gear pump with overflow valve by reversal valve.
Above-mentioned hydraulic system wherein, also is respectively arranged with oil suction oil filter, air cleaner and/or oil level monitor in described cutter rotating hydraulic system and/or the described cutter lifting hydraulic system.
Above-mentioned hydraulic system, wherein, described front-wheel steer hydraulic system comprise first hydraulic pump, monostable flow divider, switching valve and before turn to oil cylinder, described first hydraulic pump is connected with described fuel tank and described monostable flow divider respectively, described switching valve respectively with described monostable flow divider with described before turn to oil cylinder to be connected.
Above-mentioned hydraulic system, wherein, also comprise the spray liquid pressing system, described spray liquid pressing system comprises air curtain hydraulic system and spray boom hydraulic system, described spray boom hydraulic system is connected with described first hydraulic pump with described fuel tank respectively, described air curtain hydraulic system comprises second hydraulic pump, solenoid directional control valve and driving blower motor, described second hydraulic pump is connected with described solenoid directional control valve with described fuel tank respectively, described solenoid directional control valve is connected with described driving blower motor and described fuel tank respectively by overflow valve, and described driving blower motor is connected with described fuel tank.
Above-mentioned hydraulic system, wherein, described spray boom hydraulic system comprises banked direction control valves, the folding oil cylinder of spray boom and spray boom hoist cylinder, described banked direction control valves is connected with described first hydraulic pump, described fuel tank, the folding oil cylinder of described spray boom and described spray boom hoist cylinder respectively.
Technique effect of the present utility model is: realized the real-time profiling of mechanization cotton top-cutting machine, adjustable height alleviates cotton grower's labour intensity, has guaranteed cotton the finishing of operation of pinching, and has improved economic benefit greatly.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is the utility model self-propelled cotton topping machine complete machine schematic diagram;
Fig. 2 is the self-propelled topping machine of the utility model apparatus structure schematic diagram of pinching;
Fig. 3 is the utility model implement porter hydraulic principle schematic diagram;
Fig. 4 is the utility model device cutter hoist cylinder hydraulic circuit schematic diagram of pinching;
Fig. 5 is the utility model device cutter rotating hydraulic circuit theory figure that pinches;
Fig. 6 is the utility model system height automatic lifting closed-loop control system schematic diagram of pinching;
Fig. 7 is the drive principle schematic diagram of self-propelled topping machine.
Wherein, Reference numeral
1 implement porter
11 vehicle frames
12 power and hydraulic system
121 engines
122 rear wheel drive system
1221 clutches
1222 gearboxes
1223 rear axle differentials
1224 left and right driving casees
1225 limits subtract
1226 left and right driving wheel
123 front-wheel steer hydraulic systems
1,231 first hydraulic pumps
1232 monostable flow dividers
1233 switching valves
Turn to oil cylinder before 1234
124 hydraulic systems of pinching
1241 duplex gear pump
1242 reversal valves
1243 overflow valves
1244 air cleaner
1245 oil suction oil filters
1246 gear motors
1247 electro-hydraulic proportional valves
1248 stacked unidirectional valves
1249 superposing type Double throttle check valves
1240 oil level monitors
125 fuel tanks
126 spray liquid pressing systems
1261 banked direction control valves
1,262 second hydraulic pumps
1263 solenoid directional control valves
1264 overflow valves
1265 spraying liquid pumps
127 transfer cases
13 front-wheels
14 trailing wheels
15 control rooms
16 mechanical electronic hydraulic control systems
161 signal condition modules
162 proportional amplifiers
163 electro-hydraulic proportional valves
2 systems of pinching
21 copying systems
211 individual profiling parts
2111 cutter cranes
2112 cutter crane guide rails
2113 distance measuring sensors
2114 displacement transducers
2115 knife rest hoist cylinders
2116 sensor stands
212 whole profiling parts
2121 profiling land wheels
2122 quadric chains
2123 land wheel hoist cylinders
2124 profiling ground wheeling racks
22 executive systems of pinching
220 cutting tool assemblies of pinching
221 cutter shaft assemblies
222 drum-type cutters
23 nearside dividers
24 unsteady frames
25 hanger brackets
26 unsteady oil cylinders
3 spraying systems
31 spray booms
32 medicine-chests
33 spray booms fold oil cylinder
34 spray boom hoist cylinders
35 drive blower motor
36 sprayer units
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are done concrete description:
Referring to Fig. 1, Fig. 1 is the utility model self-propelled cotton topping machine structural representation.Self-propelled cotton topping machine of the present utility model, comprise the high-clearance self-propelled chassis 1 and the system 2 of pinching, the kind of drive that high-clearance self-propelled chassis 1 adopts hydraulic pressure to combine with machinery, trailing wheel 14 Mechanical Driven, front-wheel 13 fluid-link steerings, the described system 2 of pinching is connected the front end of described implement porter 1 by a hanger bracket 25, the system of pinching 2 comprises floats frame 24 and is installed in the copying system 21 on the described unsteady frame 24 and the executive system 22 of pinching, described copying system 21 comprises whole profiling parts 212 and individual profiling parts 211, described whole profiling parts 212 are connected with described unsteady frame 24, and described individual profiling parts 211 are connected with the described executive system 22 of pinching.
Referring to Fig. 2, Fig. 2 is the utility model system architecture schematic diagram of pinching.The described executive system 22 of pinching comprises at least one group of cutting tool assembly 220 of pinching, the described cutting part of pinching comprises cutter shaft assembly 221 and the drum-type cutter 222 that is installed on the described cutter shaft assembly 221, described cutter shaft assembly 221 is connected with the gear motor of described implement porter 1, and described cutter shaft assembly 221 is installed on the described unsteady frame 24.Adjacent described cutting tool assembly 220 front and back of pinching are staggeredly arranged.
Described individual profiling parts 211 comprise cutter crane 2111, distance measuring sensor 2113, displacement transducer 2114 and knife rest hoist cylinder 2115, described cutter crane 2111 is installed on the described unsteady frame 24, described knife rest hoist cylinder 2115 is installed on the described cutter crane 2111, described distance measuring sensor 2113 is connected with described cutter crane 2111, and described displacement transducer 2114 and described unsteady frame 24 are hinged.Distance measuring sensor 2113 is installed in an end of sensor stand 2116, and sensor stand 2116 other ends are connected with cutter crane 2111.One end of knife rest hoist cylinder 2115, displacement transducer 2114 and 2,112 three parts of cutter crane guide rail is all hinged with unsteady frame 24, and the entablature of the other end and cutter crane 2111 is hinged.
Hanger bracket 25 is connected with high-clearance self-propelled chassis 1, floating shelf is connected with hanger bracket 25 by parallel four-bar linkage 2122, cutter shaft assembly 221 is fixed on the frame 24 of floating, the copying system of pinching 21 comprises the oil cylinder 26 that floats, land wheel hoist cylinder 2123, distance measuring sensor 2113, knife rest hoist cylinder 2115, displacement transducer 2114, profiling land wheel 2121, cutter crane 2111 and unsteady frame 24 etc., the monomer growth rate of cotton plant state difference and the face of land uneven can influence the pinch uniformity of height of cotton, by being installed in the float injustice on the profiling land wheel 2121 adaptation faces of land on the frame 24 of topping machine truss-like.On profiling ground wheeling rack 2124, connect land wheel hoist cylinder 2123, land wheel hoist cylinder 2123 is installed in the parallel surface of profiling ground wheeling rack 2124, by adjusting profiling ground wheeling rack 2124 and ground level, realize the adjusting of unsteady frame 24 terrain clearances, the lifting of cutter crane 2111.The frame of floating 24 is connected with hanger bracket 25 by parallel four-bar linkage 2122, guarantees that the cutter Plane of rotation of drum-type cutter 222 is parallel to the ground, realizes whole profiling.Utilize laser technology to measure cutter and the top distance of cotton pearl, the flow by the resize ratio valve is with the stretching speed of control hydraulic cylinder, solution hysteresis problem; Reach in good time, accurately pinch, realize individual profiling.
Described whole profiling parts 212 comprise profiling land wheel 2121, quadric chain 2122, land wheel hoist cylinder 2123 and profiling ground wheeling rack 2124, described profiling ground wheeling rack 2,124 one ends are connected with described unsteady frame 24, described profiling land wheel 2121 is connected with the other end of described profiling ground wheeling rack 2124, described land wheel hoist cylinder 2123 is arranged on the described profiling ground wheeling rack 2124, and described quadric chain 2122 is connected with described unsteady frame 24 and described hanger bracket 25 respectively.
Described profiling ground wheeling rack 2124 is the rectangle rhs-structure, and described land wheel hoist cylinder 2123 is installed in the described profiling ground wheeling rack 2124.One end hanger of land wheel hoist cylinder 2123 is connected with unsteady frame 24 by bearing pin, the lower end is connected with profiling ground wheeling rack 2124, profiling ground wheeling rack 2124 is a square tube, land wheel hoist cylinder 2123 is placed in the profiling ground wheeling rack 2124, land wheel hoist cylinder 2,123 one ends are installed on the frame 24 of floating, and the other end and profiling ground wheeling rack 2124 are hinged.
The self-propelled cotton topping machine that the utility model provides has been realized the individual profiling that cotton is pinched.The monomer growth rate of cotton plant state difference and the face of land uneven can influence the pinch uniformity of height of cotton, by being installed in the float injustice on the profiling land wheel 2121 adaptation faces of land on the frame 24 of topping machine truss-like.On profiling land wheel 2121 supports, connect the land wheel hydraulic jack, land wheel hoist cylinder 2,123 one ends connect profiling ground wheeling rack 2,124 one ends, the other end connects profiling ground wheeling rack 2124 other ends, by adjusting profiling ground wheeling rack 2124 and ground level (adjustment of oil cylinder length has realized profiling ground wheeling rack 2124 terrain clearances), realize the float adjusting of frame 24 terrain clearances and the lifting of cutter crane 2111.The frame of floating 24 is connected with hanger bracket 25 by parallel four-bar linkage 2122, and is parallel to the ground by the self structure assurance cutter Plane of rotation of parallel four-bar linkage 2122, realizes whole profiling, the adjustment of promptly whole frame terrain clearance.Utilize laser technology to measure cutter and the top distance of cotton pearl, the flow by the resize ratio valve is with the stretching speed of control hydraulic cylinder, solution hysteresis problem; Reach in good time, accurately pinch, realize individual profiling (single file the pinch adjustment and the control of height by the cotton plant height that every capable laser sensor is measured, are adjusted the pinch height of cutter of every row in real time, realize individual profiling).
The described system 2 of pinching also comprises the oil cylinder 26 that floats, described unsteady oil cylinder 26 is installed on the described hanger bracket, 26 of the oil cylinders that float are used for transportation, during work, are in quick condition, the cutting tool assembly 220 of pinching of cotton top-cutting machine is staggered front to back layout, this layout has realized that integral layout is compact, the adjacent two capable action of pinching, each line sensor independent measurement cotton plant height of not influencing, realize the single file profiling, saved the space.
Described high-clearance self-propelled chassis 1 comprises vehicle frame 11 and is installed in control room 15, front-wheel 13, trailing wheel 14 and power and hydraulic system 12 on the described vehicle frame 11 that described front-wheel 13 and described trailing wheel 14 are connected with described power and hydraulic system 12 respectively.Structural parameters such as ground crack, wheelspan adapt to the cotton cotton middle and later periods extermination of disease and insect pest job requirements of pinching, and adopt machine driving, and hub reduction increases the technology of turning round, and have solved to impact greatly, and the problem of galloping makes overall structure more reasonable, has improved driveability.Designed the back axle spring shock absorption, the propons spring adds the hydraulic pressure cushion technique, complete machine is more stable.Adopt advanced hydraulic braking technology, improved the security performance of complete machine.Increase propons fluid power supporting construction, improved reliability.Adopt the fluid-link steering technology, make control easily easy.Wheelspan adopts mechanical adjustment mode, and crack, ground height is 1300 millimeters, has improved the field through performance of this machine, significantly reduces the injury to crop, is more suitable for farm work.
Described power and hydraulic system 12 adopt duplex gear pump, a pump of described duplex gear pump is connected with described knife rest hoist cylinder 2115, and another pump of described duplex gear pump is connected with described unsteady oil cylinder 26, described land wheel hoist cylinder 2123 and described gear motor.During the topping machine operation, the gear motor running, the oil cylinder 26 that floats floats, and land wheel hoist cylinder 2123 is failure to actuate, and in the topping machine transportation, the oil cylinder 26 that floats is raised to the certain position locking.
The utility model also can comprise spraying system 3 or broadcast application mechanism, and described spraying system 3 is arranged on the rear portion of described implement porter 1, or described broadcast application mechanism is arranged on the front portion of described implement porter 1.Except guaranteeing job requirements that cotton pinches, can also satisfy the supporting requirement of workpieces such as extermination of disease and insect pest dispenser, particle fertilizer distributor, realize a tractor serves several purposes.With the supporting dispenser equipment of high-clearance self-propelled chassis 1 by spray boom 31, medicine-chest 32, cleaning case, liquid pump and atomizer passgae system, autobalance, the folding elevating mechanism of spray boom, precisely dispenser control system etc. is formed.Wherein liquid pump, medicine-chest 32 are fixed on the vehicle frame 11 of implement porter 1, gearbox power is defeated by transfer case through power take-off, a part of power of transfer case is exported to liquid pump then, and spray boom 31 and autobalance, the folding elevating mechanism of spray boom are installed on the four connecting rod hanger brackets of vehicle frame 11 back.Precisely the dispenser control system is by the real-time detection and the feedback of operating speed, atomisation pressure, spray amount, the accurately action of control variables dispenser executing agency, spray amount is adjusted automatically according to the variation of operating speed, thereby make the actual formulation rate of sprayer consistent, realize smart amount sprinkling with setting value.
Referring to Fig. 3, Fig. 3 is the utility model implement porter hydraulic principle schematic diagram.The hydraulic system of self-propelled cotton topping machine of the present utility model, be connected with the engine in situ 121 of described self-propelled cotton topping machine, comprise front-wheel steer hydraulic system 123, the hydraulic system of pinching 124 and fuel tank 125, described front-wheel steer hydraulic system 123 is connected with described fuel tank 125 respectively with the described hydraulic system 124 of pinching.The described hydraulic system 124 of pinching comprises duplex gear pump 1241, cutter rotating hydraulic system and cutter lifting hydraulic system, described cutter rotating hydraulic system is connected with described duplex gear pump 1241 respectively with described cutter lifting hydraulic system, and described duplex gear pump 1241 is connected with described fuel tank 125.
Referring to Fig. 4 and Fig. 5, Fig. 4 is the utility model device cutter hoist cylinder hydraulic circuit schematic diagram of pinching, and Fig. 5 is the utility model device cutter rotating hydraulic circuit theory figure that pinches.Described cutter rotating hydraulic system comprises land wheel hoist cylinder 2123, oil cylinder 26 and be used to drive the gear motor 1246 of cutter rotation floats, described land wheel hoist cylinder 2123, described unsteady oil cylinder 26 and described gear motor 1246 are connected with described duplex gear pump 1241 with overflow valve 1243 by reversal valve 1242 respectively, described reversal valve 1242 is connected with described overflow valve 1243 with described duplex gear pump 1241 respectively, and described overflow valve 1243 is connected with described fuel tank 125, described land wheel hoist cylinder 2123, described unsteady oil cylinder 26 and described gear motor 1246 respectively.Also comprise stacked unidirectional valve 1248 and superposing type Double throttle check valve 1249 in the described cutter rotating hydraulic system, described stacked unidirectional valve 1248 is connected with described superposing type Double throttle check valve 1249 with described land wheel hoist cylinder 2123 respectively, and described superposing type Double throttle check valve 1249 is connected with described reversal valve 1242.Described gear motor 1246 can be a plurality of gear motors 1246, and described a plurality of gear motors 1246 backs in parallel are connected with described overflow valve 1243, and described a plurality of gear motors 1246 drive a described cutter rotation respectively.In the present embodiment, said gear motor 1246 is preferably 6, and the gear motor 1246 of 6 parallel connections is connected with overflow valve 1243, and each gear motor 1246 is connected with a cutter shaft assembly 221.
Described cutter lifting hydraulic system comprises electro-hydraulic proportional valve 1247 and knife rest hoist cylinder 2115, described electro-hydraulic proportional valve 1247 is connected with described knife rest hoist cylinder 2115, and described electro-hydraulic proportional valve 1247 is connected with described duplex gear pump 1241 with overflow valve 1243 by reversal valve 1242.
Also be respectively arranged with oil suction oil filter 1245, air cleaner 1244 and/or oil level monitor 1240 in described cutter rotating hydraulic system and/or the described cutter lifting hydraulic system.Because of the setting of oil suction oil filter 1245, air cleaner 1244 and oil level monitor 1240 is prior art with being connected, does not do at this and give unnecessary details.
Described front-wheel steer hydraulic system 123 comprise first hydraulic pump 1231, monostable flow divider 1232, switching valve 1233 and before turn to oil cylinder 1234, described first hydraulic pump 1231 is connected with described fuel tank 125 and described monostable flow divider 1232 respectively, described switching valve 1233 respectively with described monostable flow divider 1232 with described before turn to oil cylinder 1234 to be connected.
The hydraulic system of self-propelled cotton topping machine of the present utility model also can comprise spray liquid pressing system 126, described spray liquid pressing system 126 comprises air curtain hydraulic system and spray boom hydraulic system, described spray boom hydraulic system is connected with described first hydraulic pump 1231 with described fuel tank 125 respectively, described air curtain hydraulic system comprises second hydraulic pump 1262, solenoid directional control valve 1263 and driving blower motor 35, described second hydraulic pump 1262 is connected with described solenoid directional control valve 1263 with described fuel tank 125 respectively, described solenoid directional control valve 1263 is connected with described driving blower motor 35 and described fuel tank 125 respectively by overflow valve 1264, and described driving blower motor 35 is connected with described fuel tank 125.Described spray boom hydraulic system comprises banked direction control valves 1261, the folding oil cylinder 33 of spray boom and spray boom hoist cylinder 34, and described banked direction control valves 1261 is connected with described first hydraulic pump 1231, described fuel tank 125, the folding oil cylinder 33 of described spray boom and described spray boom hoist cylinder 34 respectively.
Continue to consult Fig. 3, chassis, crack, self-propelled highland two cover hydraulic systems, the hydraulic system of implement porter comprises hydraulic oil container 125, first hydraulic pump 1231, second hydraulic pump 1262, switching valve 1233, monostable flow divider 1232, banked direction control valves 1261, spray boom fold oil cylinder 33, spray boom hoist cylinder 34, solenoid directional control valve 1263, overflow valve 1243, drive blower motor 35 etc.Switching valve 1233 is an all-hydraulic steering gear.The shared hydraulic oil container 125 of each hydraulic circuit.First hydraulic pump 1231 carries the one pump for engine 121, and hydraulic pump drives by transfer case 127.First hydraulic pump 1231 is mainly steering mechanism and spray boom lifting, unfolded mechanism provide hydraulic power.First hydraulic pump, 1231 outputs on the engine 121 provide stable hydraulic power through monostable flow divider 1232 for all-hydraulic steering gear, and all-hydraulic steering gear is connected with steering wheel, to guarantee to turn to flexibly steadily.Unnecessary oil mass then outputs to spray boom lifting, unfolded oil cylinder 33 to control the action of spray boom through banked direction control valves 1261.Second hydraulic pump 1262 is to provide hydraulic power for Windscreen Fan.Hydraulic oil is by solenoid directional control valve 1263, and overflow valve 1243 outputs to Windscreen Fan motor 35.The hydraulic oil that Windscreen Fan motor 35 overflows then is back to hydraulic oil container 125 by oil spill pipe.
In conjunction with consulting Fig. 3, Fig. 4 and Fig. 5, the hydraulic system of the device of pinching also comprises the two-way hydraulic circuit, with the shared hydraulic oil container 125 of implement porter.The device hydraulic system of pinching adopts duplex gear pump 1241, a pump is used for the adjusting of land wheel hoist cylinder 2123, unsteady oil cylinder 26 and 6 combination gear motors 1246 that drive the cutter rotation, and hydraulic circuit comprises reversal valve 1242, oil cylinder 26, land wheel hoist cylinder 2123, stacked unidirectional valve 1248, superposing type Double throttle check valve 1249, reversal valve 1242, gear motor 1246, reversal valve 1242, superposing type overflow valve 1243, duplex gear pump 1241, air cleaner 1244, oil level monitor 1240 etc. float.During the topping machine operation, motor running, the oil cylinder 26 that floats floats, and support oil cylinder is failure to actuate; In the topping machine transportation, the oil cylinder 26 that floats is raised to the certain position locking; Another pump knife rest hoist cylinder 2115 that is used to pinch, hydraulic circuit comprises cutter hoist cylinder 2115, reversal valve 1242, superposing type overflow valve 1243, oil suction oil filter 1245, duplex gear pump 1241, air cleaner 1244,1240,6 knife rest hoist cylinder 2115 parallel connections of oil level monitor.
Fig. 4 and Fig. 5 are respectively the hydraulic circuit diagram of cutter lifting and cutter rotation, the closed circuit of expression hydraulic oil.Wherein air cleaner 1244: in the fuel tank 125 during pasta and rise or descend, discharge air during rising from inside to outside when hydraulic work system, ecto-entad sucks air during decline.For purifying fuel tank 125 inner fluids, the vertical air cleaner 1244 of installing just can filter inhaled air on fuel tank 125 cover plates; With advancing air cleaner 1244 is again pouring orifice, the new work fluid of injection, must be after filtration oil-feed tank 125 again, thereby filtering the foul particle in the fluid.
Referring to Fig. 6, Fig. 6 is the utility model system height automatic lifting closed-loop control system schematic diagram of pinching.The self-propelled cotton topping machine that the utility model provides, also comprise the pinch mechanical electronic hydraulic control system 16 of the highly automated lifting closed loop of device of cotton, described mechanical electronic hydraulic control system 16 is arranged in the described control room 15, be used to control cotton top-cutting machine and realize individual profiling and whole profiling, realize the highly automated lifting closed-loop control of pinching of cotton monomer.Mechanical electronic hydraulic control system 16 is made up of topping machine lifting hydraulic control, the highly automated control of pinching, height real-time feedback system etc., using PLC, hoist cylinder, displacement transducer 2114 are realized the adjusting of closed-loop adjustment height, coordination, cut quality control that PLC control realization single file knife rest position is independently controlled, each row is pinched device, automated closed-loop is regulated control principle as shown in Figure 3.Described distance measuring sensor 2113 is connected with described mechanical electronic hydraulic control system 16 by a signal condition module 161, and described knife rest hoist cylinder 2115 is connected also be linked in sequence between described knife rest hoist cylinder 2115 and the described mechanical electronic hydraulic control system 16 electro-hydraulic proportional valve 163 and proportional amplifier 162 respectively with described displacement transducer 2114 with described mechanical electronic hydraulic control system 16.Utilize distance measuring sensor 2113 to measure cutter and the top distance of cotton pearl, altitude signal is transferred to mechanical electronic hydraulic control system 16 through signal condition module 161, mechanical electronic hydraulic control system 16 provides carries out signal passing ratio amplifier 162, pass through to adjust the stretching speed of the flow of electro-hydraulic proportional valve 163 again with control knife rest hoist cylinder 2115, problem lags behind settling time, knife rest hoist cylinder 2115 stretches and makes the cutter height satisfy distance measuring sensor 2113 Testing requirement to specified altitude assignment, the cutter height feeds back to mechanical electronic hydraulic control system 16 by displacement transducer 2114 simultaneously, realizes in good time, accurately pinching of closed-loop control.Mechanical electronic hydraulic control system 16 is according to the distance of operating speed, measuring transducer and cutter level, calculate the time that cutter moves to measuring transducer, calculate in conjunction with the top distance of the cutter of measuring and cotton plant and the altimeter of pinching and to adjust cutter height required time, thereby calculate the stretching speed of knife rest hoist cylinder 2115, determine the flow of knife rest hoist cylinder 2115, draw the flow that electro-hydraulic proportional valve 163 needs adjustment.Wherein hysteresis problem refers to the cutter of the pinching position of pinching and lags behind the measuring position of measuring transducer, and when making that by adjusting the cutter rising or falling speed facility move to distance measuring sensor measurement data position, the cutter Height Adjustment of pinching is to the height requirement of pinching.
Operation principle of the present utility model is as follows:
The power output of implement porter drives the gear pump of the machinery of pinching, drive hydraulic motor, the drive cutter high speed rotating of pinching, simultaneously grain lifter is gathered master, the side shoot of cotton plant and is held up to blade rotation cut coverage, cut master, the side shoot top of cotton plant by the blade of high speed rotating, decontrol gradually after cutting the top.Realization holds up standing grain-gather-Qie top-slowly-releasing to work continuously.Reach the agronomic technique requirement that cotton is pinched.
The operating feature of pinching according to cotton machinery and the resemblance at cotton plant top according to the laser sensor identification signal, have been researched and developed the cotton highly automated lifting closed-loop control system of device of pinching.Control system is made up of the cutter lifting hydraulic control of pinching, the highly automated control of pinching, height real-time feedback system etc., using PLC, hoist cylinder, rod-pulling type displacement transducer 2114 are realized the adjusting of closed-loop adjustment height, coordination, cut quality control that PLC control realization single file knife rest position is independently controlled, each row is pinched device.
By being installed in the injustice on the profiling land wheel 2121 adaptation faces of land on the unsteady frame 24 of topping machine truss-like, on profiling ground wheeling rack 2124, connect land wheel hoist cylinder 2123, by adjusting profiling ground wheeling rack 2124 and ground level, realize the adjusting of unsteady frame 24 terrain clearances, realize the integral elevating of cutter crane 2111, the frame of floating 24 adopts parallel four-bar linkage 2122, guarantees that the cutter Plane of rotation is parallel to the ground, realizes whole profiling.Utilize distance measuring sensor 2113 to measure cutter and the top distances of cotton pearl, the flow by adjusting electro-hydraulic proportional valve 163 is with the stretching speed of control knife rest hoist cylinder 2115, solution hysteresis problem; Reach in good time, accurately pinch, realize individual profiling.26 of the oil cylinders that float are installed on the hanger bracket 25 are used for transportation.During work, the oil cylinder 26 that floats is in quick condition.
Referring to Fig. 7, Fig. 7 is the drive principle schematic diagram of self-propelled topping machine.The transmission of power principle of self-propelled cotton topping machine of the present utility model is: implement porter engine 121 passes to back axle by clutch 1221, gearbox 1222 and power transmission shaft with power, through rear axle differential 1223 power is divided into two then and passes to left and right two driving box 1224, through the chain drive in the left and right driving case 1224, drive gear reduction 1225 is delivered on the left and right rear drive sprocket 1226.In addition, engine 121 is by clutch 1221, the transfer gear of gearbox 1222 is given transfer case 127 with a part of power distribution, wherein a part drives 1265 work of spraying liquid pump by chain/belt then, drive sprayer unit 36 and implement spraying, a part drives duplex gear pump 1241 work of second hydraulic pump 1262 of implement porter 1, the device hydraulic system of pinching.
Self-propelled cotton topping machine hydraulic system of the present utility model comprises implement porter and the hydraulic system of the device of pinching, and wherein, the implement porter hydraulic system comprises the two-way hydraulic circuit.One the tunnel realizes that the folding lifting, a tunnel of hydro-steering and spray boom realizes spray boom Windscreen Fan CD-ROM drive motor.The hydraulic system of device of pinching also comprises the two-way hydraulic circuit, with the shared hydraulic oil container of implement porter.The device hydraulic system of pinching adopts duplex gear pump, and a pump is used for the adjusting of land wheel hoist cylinder, the unsteady oil cylinder of frame and the gear motor that drives the cutter rotation; Another pump be used to pinch hoist cylinder of cutter.The utility model has been realized hydro-steering and the hydraulic pressure unfolded of rearmounted spray boom and the hydraulic-driven of air curtain system of implement porter, simultaneously, the device hydraulic system of pinching has realized that the pinch height of executing agency of branch's individual profiling regulates in real time, realized that the mechanization cotton pinches, improved economic benefit greatly.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. the hydraulic system of a self-propelled cotton topping machine, be connected with the engine in situ of described self-propelled cotton topping machine, it is characterized in that, comprise the front-wheel steer hydraulic system, the hydraulic system of pinching and fuel tank, described front-wheel steer hydraulic system is connected with described fuel tank respectively with the described hydraulic system of pinching.
2. hydraulic system as claimed in claim 1, it is characterized in that, the described hydraulic system of pinching comprises duplex gear pump, cutter rotating hydraulic system and cutter lifting hydraulic system, described cutter rotating hydraulic system is connected with described duplex gear pump respectively with described cutter lifting hydraulic system, and described duplex gear pump is connected with described fuel tank.
3. hydraulic system as claimed in claim 2, it is characterized in that, described cutter rotating hydraulic system comprises the land wheel hoist cylinder, oil cylinder and be used to drive the gear motor of cutter rotation floats, described land wheel hoist cylinder, described unsteady oil cylinder and described gear motor are connected with described duplex gear pump with overflow valve by reversal valve respectively, described reversal valve is connected with described overflow valve with described duplex gear pump respectively, and described overflow valve is connected with described fuel tank, described land wheel hoist cylinder, described unsteady oil cylinder and described gear motor respectively.
4. hydraulic system as claimed in claim 3, it is characterized in that, also comprise stacked unidirectional valve and superposing type Double throttle check valve in the described cutter rotating hydraulic system, described stacked unidirectional valve is connected with described superposing type Double throttle check valve with described land wheel hoist cylinder respectively, and described superposing type Double throttle check valve is connected with described reversal valve.
5. hydraulic system as claimed in claim 3 is characterized in that, described gear motor is a plurality of gear motors, is connected with described overflow valve after described a plurality of gear motor parallel connections, and described a plurality of gear motors drive a described cutter rotation respectively.
6. as claim 2,3,4 or 5 described hydraulic systems, it is characterized in that, described cutter lifting hydraulic system comprises electro-hydraulic proportional valve and the knife rest hoist cylinder that the stretching speed that is used to control described knife rest hoist cylinder highly lags behind to avoid the cutter adjustment, described electro-hydraulic proportional valve is connected with described knife rest hoist cylinder, and described electro-hydraulic proportional valve is connected with described duplex gear pump with overflow valve by reversal valve.
7. hydraulic system as claimed in claim 6 is characterized in that, also is respectively arranged with oil suction oil filter, air cleaner and/or oil level monitor in described cutter rotating hydraulic system and/or the described cutter lifting hydraulic system.
8. as claim 1,2,3,4 or 5 described hydraulic systems, it is characterized in that, described front-wheel steer hydraulic system comprise first hydraulic pump, monostable flow divider, switching valve and before turn to oil cylinder, described first hydraulic pump is connected with described fuel tank and described monostable flow divider respectively, described switching valve respectively with described monostable flow divider with described before turn to oil cylinder to be connected.
9. hydraulic system as claimed in claim 8, it is characterized in that, also comprise the spray liquid pressing system, described spray liquid pressing system comprises air curtain hydraulic system and spray boom hydraulic system, described spray boom hydraulic system is connected with described first hydraulic pump with described fuel tank respectively, described air curtain hydraulic system comprises second hydraulic pump, solenoid directional control valve and driving blower motor, described second hydraulic pump is connected with described solenoid directional control valve with described fuel tank respectively, described solenoid directional control valve is connected with described driving blower motor and described fuel tank respectively by overflow valve, and described driving blower motor is connected with described fuel tank.
10. hydraulic system as claimed in claim 9, it is characterized in that, described spray boom hydraulic system comprises banked direction control valves, the folding oil cylinder of spray boom and spray boom hoist cylinder, and described banked direction control valves is connected with described first hydraulic pump, described fuel tank, the folding oil cylinder of described spray boom and described spray boom hoist cylinder respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020631194 CN201911089U (en) | 2010-11-29 | 2010-11-29 | Hydraulic system of self-propelled cotton top-cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020631194 CN201911089U (en) | 2010-11-29 | 2010-11-29 | Hydraulic system of self-propelled cotton top-cutting machine |
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| CN201911089U true CN201911089U (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201020631194 Expired - Fee Related CN201911089U (en) | 2010-11-29 | 2010-11-29 | Hydraulic system of self-propelled cotton top-cutting machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102475037A (en) * | 2010-11-29 | 2012-05-30 | 现代农装科技股份有限公司 | Hydraulic system of self-propelled cotton top-cutting machine |
| CN102501917A (en) * | 2011-11-15 | 2012-06-20 | 江苏大学 | Electrically-controlled hydraulically-driven steering device for mobile platform of agricultural robot |
| CN103222363A (en) * | 2013-05-08 | 2013-07-31 | 吉林大学 | Apparatus for hydraulic rapid switching of work state of faming machine |
| CN108835092A (en) * | 2018-07-24 | 2018-11-20 | 中国农业大学 | A kind of high-clearance sprayer spray boom Suspension control hydraulic system |
-
2010
- 2010-11-29 CN CN 201020631194 patent/CN201911089U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102475037A (en) * | 2010-11-29 | 2012-05-30 | 现代农装科技股份有限公司 | Hydraulic system of self-propelled cotton top-cutting machine |
| CN102501917A (en) * | 2011-11-15 | 2012-06-20 | 江苏大学 | Electrically-controlled hydraulically-driven steering device for mobile platform of agricultural robot |
| CN102501917B (en) * | 2011-11-15 | 2013-11-20 | 江苏大学 | Electrically-controlled hydraulically-driven steering device for mobile platform of agricultural robot |
| CN103222363A (en) * | 2013-05-08 | 2013-07-31 | 吉林大学 | Apparatus for hydraulic rapid switching of work state of faming machine |
| CN103222363B (en) * | 2013-05-08 | 2015-02-11 | 吉林大学 | Apparatus for hydraulic rapid switching of work state of farming machine |
| CN108835092A (en) * | 2018-07-24 | 2018-11-20 | 中国农业大学 | A kind of high-clearance sprayer spray boom Suspension control hydraulic system |
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