CN201560972U - Device for controlling rotation speed of hydraulic motor fan used for precision orchard spraying - Google Patents
Device for controlling rotation speed of hydraulic motor fan used for precision orchard spraying Download PDFInfo
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- CN201560972U CN201560972U CN2009202844574U CN200920284457U CN201560972U CN 201560972 U CN201560972 U CN 201560972U CN 2009202844574 U CN2009202844574 U CN 2009202844574U CN 200920284457 U CN200920284457 U CN 200920284457U CN 201560972 U CN201560972 U CN 201560972U
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Abstract
A device for controlling the rotation speed of a hydraulic motor fan used for precision orchard spraying comprises a control unit, an actuating mechanism and a rotation speed sensor. The rotation speed sensor is used for collecting the rotation speed signal of the hydraulic motor fan and has the output end thereof connected with the input end of the control unit through F/V and A/D conversion; the signal output end of the control unit is connected with the signal input end of the actuating mechanism; and a display control unit is connected with the control unit. The device is characterized in that the actuating mechanism comprises a variable speed unit, a motor and a driver circuit of the motor; and the input end of the motor driver circuit is the control signal input end of the actuating mechanism, the motor driver circuit drives the motor, the rotor of the motor is connected with and drives an output mechanism, and the output mechanism is connected with the valve control end of the variable speed unit. The device provided by the utility model is especially used for precision pesticide spraying using an agricultural vehicle-carried spraying machine in orchards, city greening zones and other places where middle- and small-sized fruit trees are planted.
Description
Technical field
The utility model belongs to singlechip technology and controls Application for Field in mechanical transmission, specifically is a kind of orchard precision spraying fan rotation speed control apparatus based on single-chip microcomputer and stepless speed variator.
Background technique
In the prior art, agricultural vehicle carried type orchard sprayer adopts the manual shift mode to regulate the hydraulic continuously variable transmission valve, and then changes the unit time oil inlet quantity of hydraulic fan motor, thereby realizes changing rotation speed of the fan.Mainly have two kinds of defectives by this method of manual shift: 1. rotation speed of the fan is regulated and is had only strong and weak both direction to regulate, the operator changes rotation speed of the fan according to the operating experience of oneself fully, thereby adapts to the orchard plant spraying or the dispenser of different consistencies; 2. common agricultural vehicle carried type orchard sprayer, oil hydraulic pump are to adopt the car engine transmission, when engine speed changes, are inaccurate by manual shift regulator solution pressure motor rotation speed of the fan.
The agricultural vehicle carried type atomizing sprayer of tradition, because the existence of second kind of defective, feasible technology such as patent 93206603.8 mechanical stepless arrangements for speed regulation and 93207614.9 automatic mechanical type stepless speed-regulating devices in the past, all be the pure mechanical mechanism controls method that adopts, can not realize accurately controlling the hydraulic fan motor rotating speed.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of orchard spray fan rotating speed precise control device based on single-chip microcomputer and hydraulic continuously variable transmission.Technical solutions of the utility model are as follows:
A kind of orchard precision spraying hydraulic fan motor revolution speed control device, comprise control unit, actuator and speed probe, described speed probe is used to gather the tach signal of hydraulic fan motor, and the output terminal of speed probe is changed the input end that is connected control unit through F/V with A/D; The signal output part of described control unit connects the control signal input end of actuator; Also be connected with on the described control unit and show the control unit; It is characterized in that described actuator comprises stepless speed variator and motor and drive circuit thereof; The input end of motor-drive circuit is the control signal input end of actuator, and motor-drive circuit drive motor, the rotor of motor connect the driving output mechanism, and this output mechanism connects the valve control end of described stepless speed variator.
Described output mechanism is a gear ﹠ rack structure, this structure comprise master gear and with the tooth bar of master gear synchronization motion, and chute and flexible axle; Master gear is connected with the rotor of described motor, rotates synchronously; Tooth bar is along runner movement; One end of described flexible axle is connected with tooth bar, and with tooth bar synchronously along runner movement; The valve control end of described stepless speed variator is the valve lever of stepless speed variator, and the other end of described flexible axle connects this valve lever.
Described gear ﹠ rack structure also comprises limit stoper, and restricting means comprises equipment gear, block and contact-making switch; Described equipment gear and described master gear and tooth bar engagement; Block is located on the wheel disc of equipment gear, is synchronized with the movement with equipment gear, and angular velocity is identical; Described contact-making switch is located on the motion path of block; The output terminal of described contact-making switch connects the input end of described control unit by the A/D conversion.
Described block comprises to be opened block and closes block, and described contact-making switch correspondence is provided with valve closing limit switch and valve complete opening limit switch; The push-button of described valve closing limit switch and valve complete opening limit switch is provided with on the contrary; Opening block and closing on the motion path of block, closing block under the original state and contact with the valve closing limit switch earlier; When described valve lever makes the valve complete opening, open block and turn to and valve complete opening limit switch contact position; When described valve lever makes valve closing, close block and turn to and valve closing limit switch contact position.
Described apparent control unit comprises digital display and speed regulation knob; The video signal input terminal of digital display connects the output terminal of described control unit; The output terminal of speed regulation knob connects the input end of control unit by the A/D conversion.
Described control unit is to be the circuit of core with the single-chip microcomputer.
Described motor is a stepper motor.
Also connect spring on the described valve lever; Spring action is opposite at the force direction that power on the valve lever and flexible axle act on the valve lever; Also be provided with the flexible axle strut between the two ends of described flexible axle.
Principle of the present utility model is, speed probe is installed on the hydraulic fan motor, the signals of rotational speed sensor line is connected to the single-chip processor i/o input end by F/V and A/D circuit, and by the single-chip microcomputer output terminal real-time rotating speed is shown on nixie tube (being described digital display), the nixie tube array is installed on directly over the speed regulator (being described speed regulation knob); Speed regulator is installed on the agricultural vehicle carried type orchard sprayer operator cabin control panel, provides power supply by peripheral circuit, is connected to the single-chip processor i/o input end through the A/D circuit; Limit position detects and comprises that hydraulic continuously variable transmission valve closing position probing and valve full open position detect, and it adopts limit switch to be connected respectively to the single-chip processor i/o input end by the A/D circuit; The square wave that single-chip microcomputer has sequential by I/O output terminal output device is as the Stepping Motor Control signal, and clock signal is connected to stepper motor driving circuit, and the stepper motor driving circuit delivery outlet is connected to the stepper motor pulse input end; Stepper motor is connected to pinion and rack by axle, pinion and rack comprises master gear, equipment gear, tooth bar, chute, wherein master gear is meshed with equipment gear, equipment gear relies on rotating shaft to support, rotating shaft is installed in the bearing that is fixed on the gear rack actuator shell, two blocks that are used for the limit position detection have been installed on the equipment gear, and the tooth bar end is connected with the hydraulic continuously variable transmission valve lever by flexible axle; Hydraulic continuously variable transmission valve closing position limit switch and valve full open position limit switch have been installed in gear rack actuator inside.
The beneficial effect of the invention is: this device is regulator solution pressure motor rotation speed of the fan accurately, relies on the operator to feel the manual shift regulative mode of regulating before replacing.Monolithic processor controlled hydraulic fan motor rotating speed precise control device, can compare with the hydraulic fan motor rotating speed of passing back in real time according to the given rotating speed of speed regulator, when rotation speed of the fan is lower than setting value, Single-chip Controlling peripheral gears tooth bar actuator increases stepless hydraulic transformer valve opening amount, when rotation speed of the fan is higher than setting value, then reduce stepless hydraulic transformer valve opening amount, and this process that constantly circulates, be stable at the setting tachometer value up to rotation speed of the fan.Because the The whole control device is a close-loop control mode, can the dynamic compensation engine speed change cause that rotation speed of the fan changes, make it stabilize to setting value, reach rotation speed of the fan and accurately control purpose.The operator can control the hydraulic fan motor rotating speed very intuitively like this, has overcome the uncertainty of mechanical mechanism controls mode in the past.
The utility model is specially adapted to agricultural vehicle carried type atomizing sprayer and carries out precision spraying spray medicine at occasions such as the orchard of planting middle-size and small-size fruit tree, urban trees green belts.
Description of drawings
Fig. 1 is embodiment's an overall structure schematic representation.
Fig. 2 is the structural representation of embodiment's actuator.
Fig. 3 is the structural representation of embodiment's apparent control unit.
Fig. 4 is embodiment's a circuit theory schematic representation.
Fig. 5 is a hydraulic fan motor hydraulic control oil circuit schematic representation of the prior art.
Embodiment
A kind of orchard precision spraying hydraulic fan motor revolution speed control device, comprise control unit, actuator and speed probe, described speed probe is used to gather the tach signal of hydraulic fan motor, and the output terminal of speed probe is changed the input end that is connected control unit through F/V with A/D; The signal output part of described control unit connects the control signal input end of actuator; Also be connected with on the described control unit and show the control unit; It is characterized in that described actuator comprises stepless speed variator and motor and drive circuit thereof; The input end of motor-drive circuit is the control signal input end of actuator, and motor-drive circuit drive motor, the rotor of motor connect the driving output mechanism, and this output mechanism connects the valve control end of described stepless speed variator.
Described output mechanism is a gear ﹠ rack structure, this structure comprise master gear and with the tooth bar of master gear synchronization motion, and chute and flexible axle; Master gear is connected with the rotor of described motor, rotates synchronously; Tooth bar is along runner movement; One end of described flexible axle is connected with tooth bar, and with tooth bar synchronously along runner movement; The valve control end of described stepless speed variator is the valve lever of stepless speed variator, and the other end of described flexible axle connects this valve lever.
Described gear ﹠ rack structure also comprises limit stoper, and restricting means comprises equipment gear, block and contact-making switch; Described equipment gear and described master gear and tooth bar engagement; Block is located on the wheel disc of equipment gear, is synchronized with the movement with equipment gear, and angular velocity is identical; Described contact-making switch is located on the motion path of block; The output terminal of described contact-making switch connects the input end of described control unit by the A/D conversion.
Described block comprises to be opened block and closes block, and described contact-making switch correspondence is provided with valve closing limit switch and valve complete opening limit switch; The push-button of described valve closing limit switch and valve complete opening limit switch is provided with on the contrary; Opening block and closing on the motion path of block, opening block and closing on the motion path of block, under the original state, closing block and contact with the valve closing limit switch earlier; When described valve lever makes the valve complete opening, open block and turn to and valve complete opening limit switch contact position; When described valve lever makes valve closing, close block and turn to and valve closing limit switch contact position.
Described apparent control unit comprises digital display and speed regulation knob; The video signal input terminal of digital display connects the output terminal of described control unit; The output terminal of speed regulation knob connects the input end of control unit by the A/D conversion.
Described control unit is to be the circuit of core with the single-chip microcomputer.Described motor is a stepper motor.
Also connect spring on the described valve lever; Spring action is opposite at the force direction that power on the valve lever and flexible axle act on the valve lever; Also be provided with strut between the two ends of described flexible axle, be used to support flexible axle.
Below in conjunction with drawings and Examples, the utility model is further described, but it is not represented as unique mode of execution of the invention.
Fig. 1 explanatory notes: pinion and rack 1, flexible axle 2, flexible axle strut 3, valve lever 4, spring 5, hydraulic continuously variable transmission 6;
Fig. 2 explanatory notes: single chip machine controlling circuit box 7, stepper motor 8 is installed housing 9, master gear 10, master gear rotating shaft 11, equipment gear 12, equipment gear rotating shaft 13, bearing 14, valve full open position limiting block point (being described unlatching block) 15, the complete closed position limiting block point of valve (being the described block of closing) 16, valve closing limit switch 17, valve complete opening limit switch 18, tooth bar chute 19, tooth bar 20, flexible axle fixed hole 21, wire connecting hole 22;
Fig. 3 explanatory notes: rotation speed of the fan shows nixie tube array (being described digital display) 23, rotation speed of the fan regulator 24, dial 25, speed regulation knob (being described speed regulation knob) 26;
Fig. 4 explanatory notes: peripheral input part 27, signal conversion part 28, singlechip controller 29, gear rack actuator 30, hydraulic fan motor stepless change oil circuit part 31;
Fig. 5 explanatory notes: fuel tank 32, oil hydraulic pump 33, hydraulic continuously variable transmission 34, oil purifier 35, hydraulic fan motor 36, the first relief valves 37, the second relief valves 38, the three relief valves 39, the first safety check 40, the second safety check 41, flow control valve 42, fuel tank 43.
With reference to figure 1, flexible axle strut 3 passes by flexible axle 2 in gear rack actuator 1, is connected to the valve lever 4 on the hydraulic continuously variable transmission 6, and valve lever 4 is handled reset mode (valve is closed fully) under the effect of spring 5.
With reference to figure 2, stepper motor 8 drives master gear rotating shaft 11 and drives master gear 10 rotations, master gear 10 is meshed with equipment gear 12, the rotating shaft 13 of equipment gear 12 is installed in 14 li on bearing, bearing 14 is installed in the housing 9, and equipment gear 12 is meshed with tooth bar 20, and the complete closed position limiting block point 16 of valve full open position limiting block point 15 and valve is installed on the equipment gear 12, flexible axle fixed hole 21 is used for fixing flexible axle one end, and wire connecting hole 22 is used to connect the connection jaws of peripheral circuit.In single chip machine controlling circuit box 7, mainly comprise single-chip microcomputer, peripheral F/V circuit, A/D circuit, stepper motor driving circuit.When the complete closed position limiting block point 16 of valve collides valve closing limit switch 17, represent that current hydraulic continuously variable transmission 6 valves close fully.When valve full open position limiting block point 15 collides valve complete opening limit switch 18, represent that current hydraulic continuously variable transmission 6 valves open.Among Fig. 2, valve full open position limiting block point (being described unlatching block) 15 and the complete closed position limiting block point of valve (being the described block of closing) 16 positions are under the original state, the position at their places.
With reference to figure 3, there are dial 25, speed regulation knob 26 and rotation speed of the fan to show nixie tube array 23 on the rotation speed of the fan regulator 24.By governing speed adjusting knob 26, can realize that rotation speed of the fan accurately controls, and rotating speed shows that at rotation speed of the fan nixie tube array 23 shows in real time.
With reference to figure 4, monolithic processor controlled hydraulic fan motor wind speed precise control device mainly is made up of peripheral input circuit part 27, signaling conversion circuit part 28, singlechip controller 29, gear rack actuator 30, hydraulic fan motor stepless change oil circuit part 31.Peripheral input circuit part 27 mainly comprises speed detect circuit, rotational speed regulation circuit, closes limit circuit, the complete opening limit circuit; Signaling conversion circuit part 28 mainly comprises F/V change-over circuit and A/D change-over circuit; Singlechip controller 29 is selected 51 single-chip microcomputers for use; Gear rack actuator 30 mainly comprises stepper motor driving circuit, stepper motor, pinion and rack; Hydraulic fan motor stepless change oil circuit part 31 mainly comprises compositions such as hydraulic continuously variable transmission, hydraulic fan motor and oil hydraulic pump and fuel tank.Set current rotation speed of the fan by regulating speed regulator, with detected rotating speed this moment, two signals are passed through signaling conversion circuit part 28, input as single-chip microcomputer 29, export different pulse sequence and realize the clockwise and anticlockwise of control step motor, thereby realize the opening degree of hydraulic continuously variable transmission valve, final oil hydraulic motor rotating speed is precisely controlled.Close limit circuit and complete opening limit circuit and mainly play the protective action of gear rack actuator, prevent that gear rack actuator from reaching the limit of the position and also continuing operation, cause motor long time treatment blocked state, and damage stepper motor.
With reference to figure 5, hydraulic fan motor hydraulic control oil circuit part in the prior art, oil hydraulic pump 33 is by engine-driving on the car, adopt monolithic processor controlled hydraulic fan motor wind speed precise control device, when being implemented in the engine speed conversion, the rotating speed of dynamic compensation hydraulic fan motor 36, the realization rotation speed of the fan is accurately controlled.First relief valve 37, second relief valve, 38, the three relief valves 39, first safety check 40, second safety check 41, flow control valve 42 mainly plays the oil circuit protective action.
Claims (8)
1. orchard precision spraying hydraulic fan motor revolution speed control device, it is characterized in that comprising control unit, actuator and speed probe, described speed probe is used to gather the tach signal of hydraulic fan motor, and the output terminal of speed probe is changed the input end that is connected control unit through F/V with A/D; The signal output part of described control unit connects the control signal input end of actuator; Also be connected with on the described control unit and show the control unit; Described actuator comprises stepless speed variator and motor and drive circuit thereof; The input end of motor-drive circuit is the control signal input end of actuator, and motor-drive circuit drive motor, the rotor of motor connect the driving output mechanism, and this output mechanism connects the valve control end of described stepless speed variator.
2. orchard according to claim 1 precision spraying hydraulic fan motor revolution speed control device is characterized in that described output mechanism is a gear ﹠ rack structure, this structure comprise master gear and with the tooth bar of master gear synchronization motion, and chute and flexible axle; Master gear is connected with the rotor of described motor, rotates synchronously; Tooth bar is along runner movement; One end of described flexible axle is connected with tooth bar, and with tooth bar synchronously along runner movement; The valve control end of described stepless speed variator is the valve lever of stepless speed variator, and the other end of described flexible axle connects this valve lever.
3. orchard according to claim 2 precision spraying hydraulic fan motor revolution speed control device is characterized in that described gear ﹠ rack structure also comprises limit stoper, and restricting means comprises equipment gear, block and contact-making switch; Described equipment gear and described master gear and tooth bar engagement; Block is located on the wheel disc of equipment gear, is synchronized with the movement with equipment gear, and angular velocity is identical; Described contact-making switch is located on the motion path of block; The output terminal of described contact-making switch connects the input end of described control unit by the A/D conversion.
4. orchard according to claim 3 precision spraying hydraulic fan motor revolution speed control device is characterized in that described block comprises the unlatching block and closes block, and described contact-making switch correspondence is provided with valve closing limit switch and valve complete opening limit switch; The push-button of described valve closing limit switch and valve complete opening limit switch is provided with on the contrary; Opening block and closing on the motion path of block, closing block under the original state and contact with the valve closing limit switch earlier; When described valve lever makes the valve complete opening, open block and turn to and valve complete opening limit switch contact position; When described valve lever makes valve closing, close block and turn to and valve closing limit switch contact position.
5. orchard according to claim 1 precision spraying hydraulic fan motor revolution speed control device is characterized in that described apparent control unit comprises digital display and speed regulation knob; The video signal input terminal of digital display connects the output terminal of described control unit; The output terminal of speed regulation knob connects the input end of control unit by the A/D conversion.
6. orchard according to claim 1 precision spraying hydraulic fan motor revolution speed control device is characterized in that described control unit is is the circuit of core with the single-chip microcomputer.
7. orchard according to claim 1 precision spraying hydraulic fan motor revolution speed control device is characterized in that described motor is a stepper motor.
8. according to claim 2 or 3 or 4 described orchard precision spraying hydraulic fan motor revolution speed control devices, it is characterized in that also connecting on the described valve lever spring; Spring action is opposite at the force direction that power on the valve lever and flexible axle act on the valve lever; Also be provided with the flexible axle strut between the two ends of described flexible axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202844574U CN201560972U (en) | 2009-12-25 | 2009-12-25 | Device for controlling rotation speed of hydraulic motor fan used for precision orchard spraying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202844574U CN201560972U (en) | 2009-12-25 | 2009-12-25 | Device for controlling rotation speed of hydraulic motor fan used for precision orchard spraying |
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| Publication Number | Publication Date |
|---|---|
| CN201560972U true CN201560972U (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202844574U Expired - Fee Related CN201560972U (en) | 2009-12-25 | 2009-12-25 | Device for controlling rotation speed of hydraulic motor fan used for precision orchard spraying |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777555A (en) * | 2014-02-09 | 2014-05-07 | 青岛黎马敦包装有限公司 | Device achieving control over rotating speed of equipment |
| CN109140532A (en) * | 2018-09-11 | 2019-01-04 | 南京云睿航天科技有限公司 | A kind of intelligent gas-burning stove circuit of low power consumption multi-channel temperature gated acquisition |
| CN112449878A (en) * | 2019-10-12 | 2021-03-09 | 丰疆智能科技股份有限公司 | Transmission control device and agricultural machine thereof |
-
2009
- 2009-12-25 CN CN2009202844574U patent/CN201560972U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777555A (en) * | 2014-02-09 | 2014-05-07 | 青岛黎马敦包装有限公司 | Device achieving control over rotating speed of equipment |
| CN109140532A (en) * | 2018-09-11 | 2019-01-04 | 南京云睿航天科技有限公司 | A kind of intelligent gas-burning stove circuit of low power consumption multi-channel temperature gated acquisition |
| CN112449878A (en) * | 2019-10-12 | 2021-03-09 | 丰疆智能科技股份有限公司 | Transmission control device and agricultural machine thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20101225 |