CN203374542U - Hydraulic control system for potato seeder - Google Patents
Hydraulic control system for potato seeder Download PDFInfo
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- CN203374542U CN203374542U CN201320497878.1U CN201320497878U CN203374542U CN 203374542 U CN203374542 U CN 203374542U CN 201320497878 U CN201320497878 U CN 201320497878U CN 203374542 U CN203374542 U CN 203374542U
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Abstract
The utility model relates to a hydraulic control system for a potato seeder. The hydraulic control system for the potato seeder comprises a filter, a reducing valve, a sequence valve, a hydraulic motor, a safety valve, an unloading valve, a throttle valve, a one-way cylinder, a sensor group and the like. The hydraulic motor is connected with the power input end of a seeding mechanism and connected with the power input end of a fertilization mechanism. The seeding mechanism and the fertilization mechanism operate to realize follow-up regulation of fertilizing amount and row spacing at the time of potato seeding so that the fertilizing amount and row spacing can be maintained at initial set values all the time when the seeder travels at different speeds, therefore, the uniformity of fertilizing and seeding is ensured, row spacing and fertilizing amount at the time of seeding can be regulated in a stepless mode, and different seeding agricultural requirements in all areas can be fully met.
Description
Technical field
The utility model relates to the Sowing machine for potatoes of agricultural mechanical field, particularly a kind of hydraulic control system that is applicable to Sowing machine for potatoes.
Background technique
Potato is the fourth-largest crop of China, and cultivated area is large, and bright potato output occupies first place in the world, and potato occupies critical role in agricultural economy, realizes potato production mechanization, is as good as the development that can promote Potato Industry; A variety of potato setters are arranged in the market, and its basic structure comprises fertilizing mechanism, sowing mechanism, kind case and transmission system; Transmission system is mainly to rely on land wheel to rotate to provide power, by the effect of chain and sprocket wheel, by transmission of power to fertilizing mechanism and sowing mechanism, drive fertilizing mechanism and sowing mechanism work, because relying on mechanical structure fully, it realizes transmission of power, its complex structure, poor reliability; Potato has strict requirement for the spacing in the rows of sowing, Sowing machine for potatoes in the past, the adjusting of its spacing in the rows is mainly to rely on to change the incompatible change register ratio of chain wheel set, realize the adjusting of spacing in the rows, because the sprocket wheel quantity configured on each machine is limited, thereby determined must be limited on several fixing parameters for the adjusting of potato spacing in the rows.There are different plantation agriculture requirements in different areas, and sometimes fixing spacing in the rows adjusting parameter just can't meet some regional planting requirement; Fertilizing mechanism is also the different sprocket wheel of configuration, recently realizes the adjusting of dose by the transmission between the change sprocket wheel, and the adjusting of its dose is also to be limited on certain several fixed value as a same reason, can't realize step-less adjustment; Due to the pure mechanical transmission that current potato planting machinery adopts, rate of fault is high, and repairs pretty troublesome.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of hydraulic control system for Sowing machine for potatoes, by mechanical-electrical-hydraulic integration, design, utilize oil hydraulic motor to drive sowing mechanism and fertilizing mechanism motion, the rotating speed of follow-up adjustment sowing mechanism and fertilizing mechanism while realizing potato sowing, make under gait of march that dose and spacing in the rows are different at sowing machine, setting value while forever keeping initial, thereby guaranteed the uniformity of fertilising and sowing, and sowing spacing in the rows and dose can step-less adjustment, can meet each sowing agriculture requirement from different places fully.In order to achieve this end, we carry out the rotating speed of Real-Time Monitoring sowing mechanism, fertilizing mechanism and ground wheel mechanism by speed probe is set, according to linear relationship, when the Sowing machine for potatoes gait of march accelerates, we guarantee the stable of spacing in the rows and dose by accelerating the rotating speed of sowing mechanism and fertilizing mechanism; On the contrary, if when the Sowing machine for potatoes gait of march slows down, we guarantee the stable of spacing in the rows and dose by reducing the rotating speed of sowing mechanism and fertilizing mechanism.
In order to realize function as above, the utility model is realized by the following method: a kind of hydraulic control system for Sowing machine for potatoes described in the utility model comprises filter, reduction valve, sequence valve, proportional flow control valve, oil hydraulic motor, safety valve, unloading valve, throttle valve, one-way cylinder, Pilot operated check valve, solenoid directional control valve, forced air cooler, tubular type one-way valve, Direct box and sensor group; Described oil hydraulic motor comprises oil hydraulic motor M1 and oil hydraulic motor M2; Described oil hydraulic motor M1 is connected with the power intake of sowing mechanism, drives sowing mechanism to rotate; Described oil hydraulic motor M2 is connected with the power intake of fertilizing mechanism, drives fertilizing mechanism to rotate; The filler opening end of hydraulic circuit is connected with the hydraulic oil entrance of filter by node a, and the hydraulic oil of filter exports an end and is provided with node b; The hydraulic oil entry end of described reduction valve is connected with node b, the hydraulic oil outlet end of reduction valve is provided with node c, unloading port's pipeline of reduction valve is connected with the node f arranged on the hydraulic oil circuit of hydraulic control system, and reduction valve is for setting the maximum service pressure of oil hydraulic motor; The hydraulic oil entry end of described proportional flow control valve is connected with node c, and the hydraulic oil outlet end of proportional flow control valve is connected with the hydraulic oil entry end of sequence valve, and proportional flow control valve is for controlling the rotating speed of oil hydraulic motor; The hydraulic oil outlet end of described sequence valve is connected with the hydraulic oil entry end of oil hydraulic motor, the pressure size of sequence valve control end monitoring proportional flow control valve hydraulic oil outlet end, control the connection of oil hydraulic motor hydraulic circuit by the pressure size, thereby guaranteed the lowest starting pressure of oil hydraulic motor, made oil hydraulic motor start and stop steadily; The hydraulic oil outlet end of described oil hydraulic motor is connected with the node f arranged on the hydraulic oil circuit of hydraulic control system;
One end of described throttle valve is connected with node b, and the other end is connected with the hydraulic oil entry end node 1 of solenoid directional control valve; Node i on described solenoid directional control valve is connected with the hydraulic oil entry end of Pilot operated check valve, node j is connected with the oil circuit control of Pilot operated check valve, the node f arranged on node f and hydraulic oil circuit is same node, the hydraulic oil outlet end of Pilot operated check valve is provided with node k, the hydraulic oil interface of one-way cylinder is connected with node k, by controlling solenoid directional control valve, can realize the switching of one-way cylinder in-line and return line; Described one-way cylinder is connected with the kind case, controls lifting and falling action of kind of case;
The node f arranged on described hydraulic oil circuit is connected with forced air cooler hydraulic oil entry end, the hydraulic oil outlet end of described forced air cooler is connected with the hydraulic oil entry end of tubular type one-way valve, the hydraulic oil outlet end of tubular type one-way valve is connected with the return opening of hydraulic circuit, the tubular type one-way valve is arranged at the return opening place of hydraulic circuit, oil inlet pipe and return tube wrong when preventing that hydraulic control system from docking with power equipment, the tubular type one-way valve will guarantee that hydraulic circuit can't open, and hydraulic control system and forced air cooler are protected;
Described sensor group comprise the sowing speed probe, the fertilising speed probe, wheel speed sensor and position limit switch; Described sowing speed probe is arranged on sowing mechanism, for the rotating speed of Real-Time Monitoring sowing mechanism; Described fertilising speed probe is arranged on Fertilization Structure, for the rotating speed of Real-Time Monitoring fertilizing mechanism; Described ground wheel speed sensor is arranged on land wheel, the rotating speed while advancing for the Real-Time Monitoring land wheel; Sowing speed probe, fertilising speed probe, wheel speed sensor all by signal feed back to the control terminal arranged in Direct box, control terminal is sowed signals of rotational speed sensor and land wheel signals of rotational speed sensor by contrast in real time, realize the control to oil hydraulic motor M1 by the control ratio Flow valve, finally make sowing mechanism rotation speed change and land wheel rotation speed change form closed loop control accurately, guarantee that plant is apart from the value that is stabilized in the original state setting; Control terminal is by contrasting in real time fertilising signals of rotational speed sensor and land wheel signals of rotational speed sensor, realize the control to oil hydraulic motor M2 by the control ratio Flow valve, finally make rotation speed change and the land wheel rotation speed change of fertilizing mechanism form closed loop control accurately, guarantee that dose is stabilized in the value that original state arranges; Described position limit switch is for setting the limit position that lifts and fall of mainframe, and position limit switch feeds back to control terminal by electrical signal, and control terminal, by the feedback electrical signal received, judges whether to control the hydraulic electric control system works; When mainframe lifts, sowing machine is when non-sowing working state, and position limit switch feeds back to control terminal by feedback signal, and control terminal is after receiving the feedback signal of position limit switch, cut off the signal that all the sensors collects, make the hydraulic electric control system in off position; When mainframe falls, sowing machine is in the sowing working state, and control terminal, according to the feedback signal of position limit switch, starts and implements to gather each sensor signal, makes the hydraulic electric control system in running order.
The hydraulic oil entry end of described safety valve is connected with node b, and the hydraulic oil outlet end of safety valve is connected with node f, for controlling the maximum service pressure of hydraulic control system.
The hydraulic oil entry end of described unloading valve is connected with node b, and the hydraulic oil outlet end of unloading valve is connected with node f, and when hydraulic control system is not worked, unloading valve is not in unloading condition; Hydraulic system is started working, and unloading valve is in closed condition, and system pressure is increased to working state pressure fast.
Described proportional flow control valve comprises proportional flow control valve a and proportional flow control valve b, and sequence valve comprises sequence valve a and sequence valve b; Before proportional flow control valve a and sequence valve a are arranged at oil hydraulic motor M1, for the rotating speed of controlling oil hydraulic motor M1 and the lowest starting pressure of oil hydraulic motor M1, guarantee oil hydraulic motor M1 smooth starting and stop; Before proportional flow control valve b and sequence valve b are arranged at oil hydraulic motor M2, for the rotating speed of controlling oil hydraulic motor M2 and the lowest starting pressure of oil hydraulic motor M2, guarantee oil hydraulic motor M2 smooth starting and stop.
Also be provided with alarm, display screen, control key and function selecting key on described Direct box; Direct box is singly connected with fuse box, the control circuit in Direct box and sowing speed probe, fertilising speed probe, wheel speed sensor, position limit switch, spray medicine motor, proportional flow control valve, unloading valve, solenoid directional control valve and forced air cooler form and electrically connect; Control key comprises that power switch is for controlling the open and close of power supply in Direct box, spray medicine switch is for controlling the open and close of spray medicine motor, the hopper switch, for controlling solenoid directional control valve work, by the job control to one-way cylinder, is realized lifting and putting down of kind of case.
A kind of controlling method that is applicable to the hydraulic control system of Sowing machine for potatoes, it mainly comprises following control step:
1) according to agriculture requirement, the dose that the spacing in the rows of potato planting and when sowing need is set, thereby determine the linear corresponding relation of sowing mechanism rotational velocity and land wheel rotational velocity, determine the linear corresponding relation of fertilizing mechanism rotational velocity and land wheel rotational velocity;
2) control the maximum service pressure of hydraulic control system by safety valve setting, set the maximum service pressure of oil hydraulic motor by reduction valve, set the lowest starting pressure of oil hydraulic motor by sequence valve;
3) open hydraulic control system, unloading valve is in closed condition, and pressure oil enters hydraulic control system by filter, and hydraulic control system pressure is increased to working state pressure fast; Sowing machine advances, land wheel rotates, control terminal is sowed signals of rotational speed sensor and land wheel signals of rotational speed sensor by contrast in real time, and by the control ratio Flow valve, a realizes the control to oil hydraulic motor M1, finally makes sowing mechanism rotation speed change and land wheel rotation speed change form closed loop control accurately; Control terminal is by contrasting in real time fertilising signals of rotational speed sensor and land wheel signals of rotational speed sensor, by the control ratio Flow valve, b realizes the control to oil hydraulic motor M2, finally makes the rotation speed change of fertilizing mechanism and land wheel rotation speed change form closed loop control accurately;
4) open the hopper switch, control solenoid directional control valve in to one-way cylinder, supplying oil condition, the hydraulic oil entry end of Pilot operated check valve is communicated with pressure oil, and the oil circuit control of Pilot operated check valve is communicated with oil circuit, Pilot operated check valve is in unidirectional oil-feed state, and one-way cylinder will be planted case and be lifted gradually; Plant case and lift while putting in place, control solenoid directional control valve in the oil-break line state, the sealing of the hydraulic oil pipeline of one-way cylinder, thus the bonding action oil cylinder remains on current position state; In the time will putting down kind of case, control solenoid directional control valve in the oil return state, the oil circuit control of Pilot operated check valve is communicated with pressure oil, Pilot operated check valve is opened, the hydraulic oil entry end of Pilot operated check valve is communicated with oil circuit, in one-way cylinder, hydraulic oil flows out oil cylinder by Pilot operated check valve, plants case and puts down gradually;
5) when hydraulic control system when only state is not applied fertilizer in sowing, control system will be closed proportional flow control valve b, make oil hydraulic motor M2 in off working state, sowing machine advances in process and only has oil hydraulic motor M1 work, completes seeding operation;
6) when hydraulic control system when only fertilising is not sowed state, control system will be closed proportional flow control valve a, make oil hydraulic motor M1 in off working state, sowing machine advances in process and only has oil hydraulic motor M2 work, completes the fertilising operation;
7) when hydraulic control system during in the discharging state, sowing machine halts, the ground wheel speed is zero, control terminal will abandon implementing to gather the land wheel signals of rotational speed sensor, and be fixed value by land wheel signals of rotational speed sensor setting parameter, control terminal is sowed signals of rotational speed sensor and land wheel signals of rotational speed sensor by contrast, by control ratio Flow valve a, controls oil hydraulic motor M1 work, realizes that sowing mechanism unloads kind of an operation; Control terminal, by contrast apply fertilizer signals of rotational speed sensor and land wheel signals of rotational speed sensor, is controlled oil hydraulic motor M2 work by control ratio Flow valve b, realizes that fertilizing mechanism unloads fertile operation.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the schematic diagram of hydraulic control device of the present utility model
Fig. 2 is the structural drawing of the sowing mechanism that relates to of the utility model
Fig. 3 is the structural drawing of the fertilizing mechanism that relates to of the utility model
Fig. 4 is the structural drawing of the fertilising chain harrow that relates to of the utility model
Fig. 5 is the schematic diagram of electric controller of the present utility model
In figure, 1 filter 2 reduction valve 3 sequence valve a 4 sowing mechanisms
5 oil hydraulic motor M1 6 proportional flow control valve a 7 safety valve 8 sequence valve b
9 fertilizing mechanism 10 oil hydraulic motor M2 11 proportional flow control valve b 12 unloading valves
13 throttle valve 14 one-way cylinder 15 Pilot operated check valve 16 solenoid directional control valves
17 forced air cooler 18 tubular type one-way valve 19 grain conductor 20 driving wheels
The 21 kinds of cup 22 microspecies case fertile case of 23 sowing live axle 24 25 fertilising unit
26 fertilising live axle 27 fertilizer guiding tube 28 fertilising chain harrow 29 Direct boxes
30 alarm 31 display screen 32 control key 33 function selecting keys
34 fuse box 35 spray medicine motor 36 dump bucket switch 37 sowing speed probes
38 fertilising speed probe 39 ground wheel speed sensor 40 position limit switches
Embodiment
Be illustrated in figure 2 the structural drawing of the sowing mechanism (4) that the utility model relates to, sowing mechanism (4) mainly comprises grain conductor (19), driving wheel (20), plants cup (21), microspecies case (22) and sow live axle (23); Sowing live axle (23) is fixedly connected with driving wheel (20), can drive driving wheel (20) and rotate; Planting staggered being fixedly connected on of cup (21) sows on belt, the sowing belt sleeve is connected on the follower of driving wheel (20) and grain conductor (19) lower end, rely on driving wheel (20) to rotate and drive the rotation of sowing belt, thereby the kind cup (21) be fixedly connected on the sowing belt obtains potato seed from microspecies case (22), and follow the sowing belt move upward, in the position that is positioned at grain conductor (19) top, the potato seed of planting in cup (21) will fall in the seed furrow of holding successfully by grain conductor (19), complete the process of getting kind of sowing; Whole sowing machine also comprises a larger kind case, its be hinged with frame on, by the promotion of one-way cylinder (14), can rotate around the hinge contact, thereby the potato seed in the macrospecies case is poured in microspecies case (22); In seeding process, in order to guarantee under different gait of march, the spacing in the rows of potato sowing keeps a definite value, just need to be when gait of march accelerates, the rotating speed of sowing live axle (23) accelerates thereupon, gets kind of speed and also accelerates, after potato seed falls into the speed quickening in seed furrow, can adapt to gait of march faster, guarantee that spacing in the rows is even.
The structural drawing of the fertilizing mechanism related to for the utility model as shown in Figure 3, Figure 4, fertilizing mechanism (9) mainly comprises fertile case (24), fertilising unit (25), fertilising live axle (26) and fertilizer guiding tube (27), the lower end of fertile case (24) is provided with fertile mouthful, and the Fei Kou position that falls is fixedly connected with fertilising unit (25); Be provided with driving sprocket wheel on fertilising unit (25), driving sprocket wheel is fixedly connected with fertilising live axle (26), is socketed with fertilising chain harrow (28) on driving sprocket wheel; Fertilising live axle (26) rotates and will drive the driving sprocket wheel rotation, thereby the fertilising chain harrow (28) be socketed on driving sprocket wheel also rotates thereupon, fertilizer in fertile case (24) is fallen on fertilising chain harrow (28) by the fertile mouth that falls, and follow the fertilising chain harrow (28) travel forward, be positioned at fertilising chain harrow (28) position foremost, fertilising chain harrow (28) turns round with driving sprocket wheel, and fertilizer will fall into field by fertilizer guiding tube (27).In seeding process, in order to guarantee under different gait of march, dose keeps a definite value, just need to be when gait of march accelerates, the rotating speed of fertilising live axle (26) accelerates thereupon, carries fertile speed to accelerate, and the speed that fertilizer falls into field by fertilizer guiding tube (27) is also accelerated, thereby adapt to gait of march faster, guarantee the even of dose.
As shown in Figure 1, a kind of hydraulic control system for Sowing machine for potatoes described in the utility model comprises filter (1), reduction valve (2), sequence valve, proportional flow control valve, oil hydraulic motor, safety valve (7), unloading valve (12), throttle valve (13), one-way cylinder (14), Pilot operated check valve (15), solenoid directional control valve (16), forced air cooler (17), tubular type one-way valve (18), Direct box (29) and sensor group; Described oil hydraulic motor comprises oil hydraulic motor M1 (5) and oil hydraulic motor M2 (10); Described oil hydraulic motor M1 (5) is connected with the sowing live axle (23) of sowing mechanism (4), drives sowing mechanism (4) to rotate; Described oil hydraulic motor M2 (10) is connected with the fertilising live axle (26) of fertilizing mechanism (9), drives fertilizing mechanism (9) to rotate; The filler opening end of hydraulic circuit is connected with the hydraulic oil entrance of filter (1) by node a, and the hydraulic oil of filter (1) exports an end and is provided with node b; The hydraulic oil entry end of described reduction valve (2) is connected with node b, the hydraulic oil outlet end of reduction valve (2) is provided with node c, unloading port's pipeline of reduction valve (2) is connected with the node f arranged on the hydraulic oil circuit of hydraulic control system, and reduction valve (2) is for setting the maximum service pressure of oil hydraulic motor.
Described proportional flow control valve comprises proportional flow control valve a (6) and proportional flow control valve b (11), and sequence valve comprises sequence valve a (3) and sequence valve b (8); Proportional flow control valve a (6) and sequence valve a (3) are arranged at oil hydraulic motor M1 (5) before, the hydraulic oil entry end of proportional flow control valve a (6) is connected with node c, the hydraulic oil outlet end of proportional flow control valve a (6) is connected with the hydraulic oil entry end of sequence valve a (3), the hydraulic oil outlet end of sequence valve a (3) is connected with the hydraulic oil entry end of oil hydraulic motor M1 (5), proportional flow control valve a (6) and sequence valve a (3) are mainly used in controlling the rotating speed of oil hydraulic motor M1 (5) and the lowest starting pressure of oil hydraulic motor M1 (5), guarantee oil hydraulic motor M1 (5) smooth starting and stop; proportional flow control valve b (11) and sequence valve b (8) are arranged at oil hydraulic motor M2 (10) before, the hydraulic oil entry end of proportional flow control valve b (11) is connected with node c, the hydraulic oil outlet end of proportional flow control valve b (11) is connected with the hydraulic oil entry end of sequence valve b (8), the hydraulic oil outlet end of sequence valve b (8) is connected with the hydraulic oil entry end of oil hydraulic motor M2 (10), proportional flow control valve b (11) and sequence valve b (8) are mainly used in controlling the rotating speed of oil hydraulic motor M2 (10) and the lowest starting pressure of oil hydraulic motor M2 (10), guarantee oil hydraulic motor M2 (10) smooth starting and stop, the hydraulic oil outlet end of described oil hydraulic motor M1 (5) and oil hydraulic motor M2 (10) is connected with the node f arranged on the hydraulic oil circuit of hydraulic control system.
One end of described throttle valve (13) is connected with node b, and the other end is connected with the hydraulic oil entry end node 1 of solenoid directional control valve (16); Node i on described solenoid directional control valve (16) is connected with the hydraulic oil entry end of Pilot operated check valve (15), node j is connected with the oil circuit control of Pilot operated check valve (15), the node f arranged on node f and hydraulic oil circuit is same node, the hydraulic oil outlet end of Pilot operated check valve (15) is provided with node k, the hydraulic oil interface of one-way cylinder (14) is connected with node k, by controlling solenoid directional control valve (16), can realize the switching of one-way cylinder (14) in-line and return line; Described one-way cylinder (14) is connected with the kind case, controls lifting and falling action of kind of case.
The node f arranged on described hydraulic oil circuit is connected with forced air cooler (17) hydraulic oil entry end; the hydraulic oil outlet end of described forced air cooler (17) is connected with the hydraulic oil entry end of tubular type one-way valve (18); the hydraulic oil outlet end of tubular type one-way valve (18) is connected with the return opening of hydraulic circuit; tubular type one-way valve (18) is arranged at the return opening place of hydraulic circuit; oil inlet pipe and return tube wrong when preventing that hydraulic control system from docking with power equipment; tubular type one-way valve (18) will guarantee that hydraulic circuit can't open, and hydraulic control system is protected.
The hydraulic oil entry end of described safety valve (7) is connected with node b, and the hydraulic oil outlet end of safety valve (7) is connected with node f, for controlling the maximum service pressure of hydraulic control system.
The hydraulic oil entry end of described unloading valve (12) is connected with node b, and the hydraulic oil outlet end of unloading valve (12) is connected with node f, and unloading valve when hydraulic control system is not worked (12) is in unloading condition; Hydraulic system is started working, and unloading valve (12) is in closed condition, and system pressure is increased to working state pressure fast.
As shown in Figure 5, described sensor group comprise the sowing speed probe (37), the fertilising speed probe (38), wheel speed sensor (39) and position limit switch (40); It is upper that described sowing speed probe (37) is arranged at sowing mechanism (4), for the rotating speed of Real-Time Monitoring sowing mechanism (4); It is upper that described fertilising speed probe (38) is arranged at Fertilization Structure (9), for the rotating speed of Real-Time Monitoring fertilizing mechanism (9); Described ground wheel speed sensor (39) is arranged on land wheel, the rotating speed while advancing for the Real-Time Monitoring land wheel; Sowing speed probe (37), fertilising speed probe (38), wheel speed sensor (39) all by signal feed back to the control terminal arranged in Direct box (29), control terminal is by the speed probe (37) of contrast sowing in real time signal and ground wheel speed sensor (39) signal, realize the control to oil hydraulic motor M1 (5) by the control ratio Flow valve, finally make sowing mechanism (4) rotation speed change and land wheel rotation speed change form closed loop control accurately, guarantee that plant is apart from the value that is stabilized in the original state setting; Control terminal is by contrasting in real time fertilising speed probe (38) signal and land wheel signals of rotational speed sensor, realize the control to oil hydraulic motor M2 (10) by the control ratio Flow valve, finally make rotation speed change and the land wheel rotation speed change of fertilizing mechanism (9) form closed loop control accurately, guarantee that dose is stabilized in the value that original state arranges; Described position limit switch (40) is for setting the limit position that lifts and fall of mainframe, and position limit switch (40) feeds back to control terminal by electrical signal, and control terminal, by the feedback electrical signal received, judges whether to control the hydraulic electric control system works; When mainframe lifts, sowing machine is when non-sowing working state, position limit switch (40) feeds back to control terminal by feedback signal, control terminal is after the feedback signal that receives position limit switch (40), cut off the signal that all the sensors collects, make the hydraulic electric control system in off position; When mainframe falls, sowing machine is in the sowing working state, and control terminal, according to the feedback signal of position limit switch (40), starts and implements to gather each sensor signal, makes the hydraulic electric control system in running order.
As shown in Figure 5, also be provided with alarm (30), display screen (31), control key (32) and function selecting key (33) on described Direct box (29); Direct box (29) is singly connected with fuse box (34), the control circuit in Direct box (29) and sowing speed probe (37), fertilising speed probe (38), wheel speed sensor (39), position limit switch (40), spray medicine motor (35), proportional flow control valve, unloading valve (12), solenoid directional control valve (16) and forced air cooler (17) formation electrically connect; Control key (32) comprises that power switch is for controlling the open and close of power supply in Direct box, spray medicine switch is for controlling the open and close of spray medicine motor, the hopper switch, for controlling solenoid directional control valve work, by the job control to one-way cylinder, is realized lifting and putting down of kind of case.
Claims (6)
1. the hydraulic control system for Sowing machine for potatoes, is characterized in that: comprise filter, reduction valve, sequence valve, proportional flow control valve, oil hydraulic motor, safety valve, unloading valve, throttle valve, one-way cylinder, Pilot operated check valve, solenoid directional control valve, forced air cooler, tubular type one-way valve, Direct box and sensor group; Described oil hydraulic motor comprises oil hydraulic motor M1 and oil hydraulic motor M2; Described oil hydraulic motor M1 is connected with the power intake of sowing mechanism, drives sowing mechanism to rotate; Described oil hydraulic motor M2 is connected with the power intake of fertilizing mechanism, drives fertilizing mechanism to rotate; The filler opening end of hydraulic circuit is connected with the hydraulic oil entrance of filter by node a, and the hydraulic oil of filter exports an end and is provided with node b; The hydraulic oil entry end of described reduction valve is connected with node b, the hydraulic oil outlet end of reduction valve is provided with node c, unloading port's pipeline of reduction valve is connected with the node f arranged on the hydraulic oil circuit of hydraulic control system, and reduction valve is for setting the maximum service pressure of oil hydraulic motor; The hydraulic oil entry end of described proportional flow control valve is connected with node c, and the hydraulic oil outlet end of proportional flow control valve is connected with the hydraulic oil entry end of sequence valve, and proportional flow control valve is for controlling the rotating speed of oil hydraulic motor; The hydraulic oil outlet end of described sequence valve is connected with the hydraulic oil entry end of oil hydraulic motor, the pressure size of sequence valve control end monitoring proportional flow control valve hydraulic oil outlet end, control the connection of oil hydraulic motor hydraulic circuit by the pressure size, thereby guaranteed the lowest starting pressure of oil hydraulic motor; The hydraulic oil outlet end of described oil hydraulic motor is connected with the node f arranged on the hydraulic oil circuit of hydraulic control system;
One end of described throttle valve is connected with node b, and the other end is connected with the hydraulic oil entry end node 1 of solenoid directional control valve; Node i on described solenoid directional control valve is connected with the hydraulic oil entry end of Pilot operated check valve, node j is connected with the oil circuit control of Pilot operated check valve, the node f arranged on node f and hydraulic oil circuit is same node, the hydraulic oil outlet end of Pilot operated check valve is provided with node k, the hydraulic oil interface of one-way cylinder is connected with node k, by controlling solenoid directional control valve, can realize the switching of one-way cylinder in-line and return line; Described one-way cylinder is connected with the kind case, controls lifting and falling action of kind of case;
The node f arranged on described hydraulic oil circuit is connected with forced air cooler hydraulic oil entry end, and the hydraulic oil outlet end of described forced air cooler is connected with the hydraulic oil entry end of tubular type one-way valve, and the hydraulic oil outlet end of tubular type one-way valve is connected with the return opening of hydraulic circuit.
2. a kind of hydraulic control system for Sowing machine for potatoes according to claim 1 is characterized in that: described sensor group comprise sowing speed probe, fertilising speed probe, wheel speed sensor and position limit switch; Described sowing speed probe is arranged on sowing mechanism, for the rotating speed of Real-Time Monitoring sowing mechanism; Described fertilising speed probe is arranged on Fertilization Structure, for the rotating speed of Real-Time Monitoring fertilizing mechanism; Described ground wheel speed sensor is arranged on land wheel, the rotating speed while advancing for the Real-Time Monitoring land wheel; Sowing speed probe, fertilising speed probe, wheel speed sensor all by signal feed back to the control terminal arranged in Direct box, control terminal is sowed signals of rotational speed sensor and land wheel signals of rotational speed sensor by contrast in real time, realize the control to oil hydraulic motor M1 by the control ratio Flow valve, finally make sowing mechanism rotation speed change and land wheel rotation speed change form closed loop control accurately; Control terminal is by contrasting in real time fertilising signals of rotational speed sensor and land wheel signals of rotational speed sensor, realize the control to oil hydraulic motor M2 by the control ratio Flow valve, finally make the rotation speed change of fertilizing mechanism and land wheel rotation speed change form closed loop control accurately; Described position limit switch feeds back to control terminal by electrical signal, and control terminal, by the feedback electrical signal received, judges whether to control the hydraulic electric control system works.
3. a kind of hydraulic control system for Sowing machine for potatoes according to claim 1, it is characterized in that: the hydraulic oil entry end of described safety valve is connected with node b, the hydraulic oil outlet end of safety valve is connected with node f, for controlling the maximum service pressure of hydraulic control system.
4. a kind of hydraulic control system for Sowing machine for potatoes according to claim 1, it is characterized in that: the hydraulic oil entry end of described unloading valve is connected with node b, and the hydraulic oil outlet end of unloading valve is connected with node f.
5. a kind of hydraulic control system for Sowing machine for potatoes according to claim 1, it is characterized in that: described proportional flow control valve comprises proportional flow control valve a and proportional flow control valve b, sequence valve comprises sequence valve a and sequence valve b; Before proportional flow control valve a and sequence valve a are arranged at oil hydraulic motor M1, for the rotating speed of controlling oil hydraulic motor M1 and the lowest starting pressure of oil hydraulic motor M1; Before proportional flow control valve b and sequence valve b are arranged at oil hydraulic motor M2, for the rotating speed of controlling oil hydraulic motor M2 and the lowest starting pressure of oil hydraulic motor M2.
6. a kind of hydraulic control system for Sowing machine for potatoes according to claim 1, is characterized in that: also be provided with alarm, display screen, control key and function selecting key on described Direct box; Direct box is singly connected with fuse box, the control circuit in Direct box and sowing speed probe, fertilising speed probe, wheel speed sensor, position limit switch, spray medicine motor, proportional flow control valve, unloading valve, solenoid directional control valve and forced air cooler form and electrically connect; Control key comprises power switch, spray medicine switch, hopper switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320497878.1U CN203374542U (en) | 2013-08-15 | 2013-08-15 | Hydraulic control system for potato seeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320497878.1U CN203374542U (en) | 2013-08-15 | 2013-08-15 | Hydraulic control system for potato seeder |
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| Publication Number | Publication Date |
|---|---|
| CN203374542U true CN203374542U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320497878.1U Expired - Fee Related CN203374542U (en) | 2013-08-15 | 2013-08-15 | Hydraulic control system for potato seeder |
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| Country | Link |
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| CN (1) | CN203374542U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398034A (en) * | 2013-08-15 | 2013-11-20 | 中机美诺科技股份有限公司 | Hydraulic control system applicable to potato seeder |
| CN107172942A (en) * | 2017-07-13 | 2017-09-19 | 河北农业大学 | Novel variable fertilizer applicator |
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2013
- 2013-08-15 CN CN201320497878.1U patent/CN203374542U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398034A (en) * | 2013-08-15 | 2013-11-20 | 中机美诺科技股份有限公司 | Hydraulic control system applicable to potato seeder |
| CN107172942A (en) * | 2017-07-13 | 2017-09-19 | 河北农业大学 | Novel variable fertilizer applicator |
| CN107172942B (en) * | 2017-07-13 | 2022-11-22 | 河北农业大学 | Variable fertilizer applicator |
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