CN110333089A - A kind of adaptive copying system testing stand - Google Patents
A kind of adaptive copying system testing stand Download PDFInfo
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- CN110333089A CN110333089A CN201910590647.7A CN201910590647A CN110333089A CN 110333089 A CN110333089 A CN 110333089A CN 201910590647 A CN201910590647 A CN 201910590647A CN 110333089 A CN110333089 A CN 110333089A
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 45
- 239000012530 fluid Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000009331 sowing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000013642 negative control Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000020169 heat generation Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 27
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009355 double cropping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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Abstract
The present invention relates to a kind of adaptive profiling testing stand, including mechanical structure portion, hydraulic system part, the part of control system part three, three parts cooperate.Pass through hydraulic system simulated roadway state, the cooperation effectively uneven operating condition of simulation surface relief and left and right of two hydraulic cylinders can be passed through, dynamical element selects constant pressure variable displacement pump to have preferable energy-saving effect, avoid system heat generation, using pressure compensating system, ensure that flow system flow can be adjusted precisely, then realizes the accurate control of hydraulic cylinder speed.
Description
Technical field
The present invention relates to a kind of adaptive profiling testing stand more particularly to a kind of adaptive copying system tests of planting machinery
Platform.
Background technique
In the big link of grain-production six, planting link Mechanization Level is lower.Transplanting and sowing equipment need workpiece
Realize adaptive profiling according to ground undulating state, to guarantee that seed level is stable and plants precision, existing planting machinery type it is suitable
Answering property is poor, causes the problems such as operation quality can not meet plantation agriculture requirement, operating efficiency is low.Therefore, there is an urgent need to grind
Study carefully planting machinery and equip adaptive profiling key technology, improve the adaptability and operation quality of planting machinery, is then promotion agriculture
Industry economic development provides equipment basis.
Summary of the invention
The object of the present invention is to provide a kind of adaptive copying system testing stands, can pass through the cooperation of hydraulic cylinder realization pair
The simulation on ground, and realize that the lifting of planting mechanism and level level respectively as executive component by two electric pushrods, it can be right
Designed adaptive copying system is verified and is optimized.
The present invention takes following technical scheme:
A kind of adaptive profiling testing stand, including mechanical structure portion, hydraulic system part, control system part；It is described
Mechanical structure portion includes the leveling board 1 for simulating transplanting in actual production process and sowing equipment, leveling board 1 with connect
Plate 2 is connected close to setting in parallel, and for connecting plate 2 centered on its planar central, surrounding is symmetrically arranged with first, second, third, fourth
Waist type sliding slot 21,22,26,28 is equipped with bolt in each waist type sliding slot, and is connect by the bolt with leveling board 1；The tune
1 side of plate is equipped with the first push rod connection frame 15, and clutch disk 30 is installed in the intermediate aperture of connecting plate 2, and clutch disk 30 passes through spiral shell
Bolt respectively limits leveling board 1 and connecting plate 2, allows leveling board 1 around the center of circle of clutch disk 30 in the range of ± 10 °
It rotates, the bolt in rotation process in the first, second, third, fourth waist type sliding slot slides in corresponding sliding slot respectively, connects
The position of plate 2 is fixed；It is symmetrically arranged on the first upper layer of connecting plate lug 3 and connecting plate second at left and right sides of connecting plate upper layer
Layer lug 24, the first upper layer of connecting plate lug 3 and the rotation connection of the first upper junction plate 35, the second upper layer of connecting plate lug 24 and the
The rotation connection of two upper junction plates 4；The first lower layer of connecting plate lug 38 and connection are symmetrically arranged at left and right sides of connecting plate lower layer
The second lower layer of plate lug 39, the first lower layer of connecting plate lug 38 and the first lower connecting plate 36 are rotatablely connected, the second lower layer of connecting plate
Lug 17 and the second lower connecting plate 37 are rotatablely connected；The one side of connecting plate is welded with the first push rod pedestal 14, the first push rod bottom
Seat 14 is connect with the lower rotation of the first electric pushrod 13, the top of first electric pushrod 13 and the first push rod connection frame
15 rotation connections；In initial position, the first electric pushrod is in the half of stroke, according to the feedback signal control of obliquity sensor
Device processed controls the flexible of the first electric pushrod 13, so that leveling board 1 is in horizontality always；The middle position of connecting plate is arranged
Lug 40 among connecting plate；Connecting bracket 7 is for the connection between adaptive feeler mechanism and pedestal；The connecting bracket 7
The second push rod pedestal 18 of upper fixed setting；The bottom of second electric pushrod 33 and the second push rod pedestal 18 are rotatablely connected, the second electricity
Lug 40 is rotatablely connected among the top of dynamic push rod 33 and connecting plate；In initial position, the second electric pushrod is in stroke
Half controls stretching for the second electric pushrod 18 by controller according to the retracted position of first hydraulic cylinder 12 and second hydraulic cylinder 34
Contracting, to realize that leveling board carries out vertical adjustment up and down according to the pavement state that hydraulic cylinder is simulated；At left and right sides of 7 upper layer of connecting bracket
It is symmetrically arranged the first upper layer of connecting bracket lug 6 and the second upper layer of connecting bracket lug 25, the first upper layer of connecting bracket is convex
Ear and the first upper junction plate 35 are rotatablely connected, and the second upper layer of connecting bracket lug 17 and the second upper junction plate 24 are rotatablely connected；Even
It connects and is symmetrically arranged the first lower layer of connecting bracket lug 6 and the second lower layer of connecting bracket lug 17 at left and right sides of bracket lower layer,
The first lower layer of connecting bracket lug 6 and the first lower connecting bracket 36 are rotatablely connected, the second lower layer of connecting bracket lug 17 and second
Lower connecting bracket 37 is rotatablely connected；The hydraulic system part includes dynamical element, and dynamical element is constant pressure variable displacement pump；Constant pressure becomes
Oil outlet two circuits in parallel for measuring pump, wherein connecting the oil inlet of overflow valve all the way；The oil outlet of overflow valve connects cooler,
For cooling down the hot oil of overflow valve outflow；The filter that the another way connecting band of the oil outlet of constant pressure variable displacement pump is shown, band display
Filter oil outlet parallel connection two-way, wherein connect the first uniform-pressure-drop valve all the way, the oil outlet connection of the first uniform-pressure-drop valve
First 3-position 4-way proportional reversing valve, the pressure oil port of the first uniform-pressure-drop valve connect the first shuttle valve, the first uniform-pressure-drop valve and
First shuttle valve collectively forms first pressure compensation system；Two hydraulic fluid ports of the first 3-position 4-way proportional reversing valve connect the first check valve
Group, the first unidirectional valve group are hydraulic control form, for locking the position of first hydraulic cylinder；First hydraulic cylinder is single-piston rod double cropping
Use hydraulic cylinder；The another way of filter A5 oil outlet with display connects the second uniform-pressure-drop valve, and the second uniform-pressure-drop valve is fuel-displaced
Mouth the second 3-position 4-way proportional reversing valve of connection, the pressure oil port of the second uniform-pressure-drop valve connect the second shuttle valve, and second determines subtractive
Pressure valve and the second shuttle valve together constitute second pressure compensation system；Two hydraulic fluid ports of the second 3-position 4-way proportional reversing valve connect
Second one-way valve group, second one-way valve group are hydraulic control form；The control system part includes: to be installed on the first and second hydraulic cylinder
With the stay wire sensor on the first, second electric pushrod, stay wire sensor obtains the first, second hydraulic cylinder and first, in real time
The travel information of two electric pushrods；For measuring the angular transducer of leveling board horizontality, stay wire sensor and angle sensor
Device is respectively connect with Analog input mModule, and Analog input mModule is connect with controller；Controller and analog output module
Connection, analog output module: the analog signals output it control hydraulic proportion valve by amplifier, and output signal is just
The position of negative control proportioning valve access system, the restriction aperture of the size control proportioning valve of output signal, then controls liquid
Cylinder pressure speed；Meanwhile the analog quantity of analog output module output accesses PWM governor, PWM governor is using decompression speed
Mode controls the speed of corresponding electric pushrod.
Further, the mechanical structure portion further includes pedestal, and pedestal is by first base support beam 5, second base
Support beam 8, third pedestal support beam 9, first base support stringer 41 and second base support stringer 42 form, described
Second base support beam 8 and third pedestal support beam 9 are for carrying counterweight 10；Pedestal is supported by pedestal supporting leg 11, bottom
Seat supports leg 11 is welded and fixed with pedestal support stringer.
Further, the both ends of the first base support beam 5 are respectively at the rod chamber with first hydraulic cylinder 12
It is connected with the rod chamber of second hydraulic cylinder 34, the rodless cavity of the rodless cavity of first hydraulic cylinder 12 and second hydraulic cylinder 34 is respectively and even
Connect the bottom connection of bracket 7.
Further, controller and computer configuration communicate, by the output of the signal of sensor and analog output module
The real-time acquisition and recording of signal is analyzed for post-processing.
Further, the adaptive profiling testing stand is used to transplant and sow the simulated experiment of equipment.
The beneficial effects of the present invention are:
1) by hydraulic system simulated roadway state, surface relief and a left side can effectively be simulated by the cooperation of two hydraulic cylinders
The operating condition of right injustice, dynamical element are selected constant pressure variable displacement pump to have preferable energy-saving effect, avoid system heat generation, mended using pressure
Repay system, it is ensured that flow system flow can be adjusted precisely, then realize the accurate control of hydraulic cylinder speed.Hydraulic system uses check valve
Group is used as Prssure lock, and locking effect is good.
2) lifting and the Level tune of transplanting mechanism are realized by two electric pushrods, it is easily controllable, response is fast, and at
This is lower.Pass through the adjustable electric pushrod movement velocity of PWM governor, then adjustable systems sensitivity.
3) communication for passing through computer and controller, may be implemented in real time to store on the computers collected signal,
Processing for the later period is analyzed.
Detailed description of the invention
Fig. 1 is the plan view (overlook direction) of the adaptive copying system testing stand of the present invention；
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
In Fig. 1-Fig. 3: 1- leveling board 2- connecting plate 3- connecting plate the first upper layer the second upper junction plate of lug 4- 5-
One the first lower layer of pedestal support beam 6- connecting bracket lug 7- connecting bracket 8- second base support beam 9- third bottom
Seat supports crossbeam 10- counterweight 11- pedestal supporting leg 12- first hydraulic cylinder 13- the first electric pushrod the first push rod of 14- bottom
Seat 15- the first push rod connection frame 16- connecting bracket the first upper layer lug 17- connecting bracket the second lower layer lug 18- second
Push rod pedestal 19- connecting bracket reinforcing rib 20- the first bolt 21- the first waist type sliding slot 22- the second waist type sliding slot 23-
Two the second upper layer of bolt 24- connecting plate the second upper layer of lug 25- third pin shaft 26- connecting bracket lug 27- third bolts
The 6th bolt 33- second of the 4th the 5th bolt 32- of bolt 30- clutch disk 31- of the 4th waist type sliding slot 29- of 28- is electronic to be pushed away
Bar 34- second hydraulic cylinder 35- the first upper junction plate 36- the first lower connecting plate 37- the second lower connecting plate 38- connecting plate
Lug 41- first base support stringer 42- the among one the second lower layer of lug 39- connecting plate, lower layer lug 40- connecting plate
Two pedestal support stringers.
Fig. 4 is hydraulic schematic diagram of the present invention, in Fig. 4:
Filter A6- first of the A1- fuel tank A2- constant pressure variable displacement pump A3- cooler A4- overflow valve A5- with display is fixed
Difference pressure-reducing valve A7- the first 3-position 4-way proportional reversing valve the first shuttle valve of A8- the first unidirectional valve group A10- first hydraulic cylinder of A9-
A11- the second uniform-pressure-drop valve A12- the second 3-position 4-way proportional reversing valve A13- the second shuttle valve A14- second one-way valve group
A15- second hydraulic cylinder.
Fig. 5 is the control system figure of the adaptive copying system testing stand of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific examples.
Fig. 1-3 is structure chart of the invention.
Referring to Fig. 1-3, leveling board 1 is to be deleveled mechanism, the transplanting for being used to simulate in actual production process and sowing dress
Standby, the angular transducer feedback signal installed according to it determines the posture of leveling board, and the shape and size of leveling board can basis
Actual requirement customization；
Leveling board 1 is connected by connecting plate 2 with other elements, 2 length, width and height of connecting plate be respectively 500mm,
500mm, 20mm are symmetrily processed with the first waist type sliding slot 21, the second waist type sliding slot 22,26 and of third waist type sliding slot on connecting plate 2
4th waist type sliding slot 28, sliding slot are wide sliding slot, width 20mm, are equipped with the first bolt 20 in waist type first sliding groove, and
Second bolt 23 is installed in two waist type sliding slots, third bolt 27 is installed in third waist type sliding slot, is pacified in the 4th waist type sliding slot
Equipped with the 4th bolt 29, the connection of connection version 2 and leveling board 1 is realized by above-mentioned bolt；
The side of leveling board 1 is welded with the first push rod connection frame 15；
Clutch disk 30 is installed in the intermediate aperture of connecting plate 2；30 diameter of clutch disk is 130mm, with a thickness of 10mm, connection circle
Disk 30 is connect by the 5th bolt 31 and the 6th bolt 32 with leveling board 1 and connecting plate 2, and leveling board 1 can be around connection circle
The center of circle of disk 30 rotates in the range of ± 10 °, in rotation process, the first bolt, the second bolt, third bolt and the 4th bolt
It is slided in corresponding sliding slot respectively, the position of connecting plate 2 is fixed；
Respectively symmetrically the first upper layer of welded connecting plate lug 3 and the second upper layer of connecting plate lug at left and right sides of connecting plate upper layer
24, the connecting plate upper layer lug is equipped with the hole that diameter is 16.5mm, and the first upper layer of connecting plate lug 3 passes through pin shaft and the
The connection of one upper junction plate 35 has certain rotational freedom, pin diameter 14mm, length 70mm, connection between the two
The second upper layer of plate lug 24 is connect by pin shaft with the second upper junction plate 4, has certain rotational freedom, pin shaft between the two
Diameter is 14mm, length 70mm；
Respectively symmetrically the first lower layer of welded connecting plate lug 38 and the second lower layer of connecting plate are convex at left and right sides of connecting plate lower layer
Ear 39, the connecting plate lower layer lug are equipped with the hole that diameter is 16.5mm, and the first lower layer of connecting plate lug 38 passes through pin shaft
Connect with the first lower connecting plate 36, between the two have certain rotational freedom, pin diameter 14mm, length 70mm,
The second lower layer of connecting plate lug 17 is connect by pin shaft with the second lower connecting plate 37, has centainly rotatably mounted between the two
Degree, pin diameter 14mm, length 70mm；
The one side of connecting plate is welded with the first push rod pedestal 14, and the first push rod pedestal passes through pin shaft and the first electric pushrod
13 bottom connection, the diameter of pin shaft are 6mm, length 40mm, the top of first electric pushrod 13 by pin shaft with
The connection of first push rod connection frame 15, electric pushrod stroke are 200mm, and power and speed can select according to demand.In initial bit
When setting, electric pushrod is in the half of stroke, i.e. stretching 100mm, controls electricity according to the feedback signal controller of obliquity sensor
Dynamic push rod stretches, to realize that leveling board adaptively levels.
The middle position of connecting plate is welded with lug 40 among connecting plate；
Connecting bracket 7 is for the connection between adaptive feeler mechanism and pedestal；The connecting bracket is four sections
30mmx30mm square tubes soldering forms, wall thickness 2.5mm, connecting bracket reinforcing rib 19 is welded between two perpendicular square tubes, for reinforcing
Structural strength；The middle position of the connecting bracket reinforcing rib 19 is welded with the second push rod pedestal 18；
The bottom of second electric pushrod 33 is connected by pin shaft with the second push rod pedestal 18, the top of the second electric pushrod 33
Portion is connected by lug 40 among pin shaft and connecting plate, and the stroke of second electric pushrod is 300mm, power and speed
Degree can select according to demand.In initial position, the second electric pushrod is in the half of stroke, i.e. stretching 150mm, according to first
Hydraulic cylinder 12 and the retracted position of second hydraulic cylinder 34 are by the flexible of controller the second electric pushrod of control, to realize leveling board root
Vertical adjustment up and down is carried out according to the pavement state of hydraulic cylinder simulation.
The first upper layer of bracket lug 6 and connecting bracket second are respectively symmetrically welded to connect at left and right sides of 7 upper layer of connecting bracket
Upper layer lug 25, the connecting bracket upper layer lug are equipped with the hole that diameter is 28.5mm, the first upper layer of connecting bracket lug
It is connect by pin shaft with the first upper junction plate 35, there is certain rotational freedom, pin diameter 28mm, length between the two
For 100mm, the second upper layer of connecting bracket lug 17 is connect by pin shaft with the second upper junction plate 24, is had between the two centainly
Rotational freedom, pin diameter 28mm, length 100mm；
It is respectively symmetrically welded to connect under the first lower layer of bracket lug 6 and connecting bracket second at left and right sides of connecting bracket lower layer
Layer lug 17, the connecting bracket lower layer lug are equipped with the hole that diameter is 16.5mm, and the first lower layer of connecting bracket lug 6 is logical
It crosses pin shaft to connect with the first lower connecting bracket 36, there is certain rotational freedom, pin diameter 28mm, length between the two
For 100mm, the second lower layer of connecting bracket lug 17 is connect with the second lower connecting bracket 37 by pin shaft, is had between the two certain
Rotational freedom, pin diameter 28mm, length 100mm；
Pedestal is by first base support beam 5, second base support beam 8, third pedestal support beam 9, first base
Support stringer 41 and second base support stringer 42 form, and the square tube that pedestal support beam is section 30mmx30mm forms, wall thickness
2.75mm, length 720mm, the square tube that pedestal support stringer is section 30mmx30mm form, wall thickness 2.5mm, length 600mm；Institute
The second base support beam 8 and third pedestal support beam 9 stated are for carrying counterweight 10, to improve the stability of structure；Bottom
Seat has the support of pedestal supporting leg 11, and it is the square tube of section 30mmx30mm, wall thickness that the quantity of pedestal supporting leg, which is 6,
2.75mm, length 150mm, pedestal supporting leg and pedestal support stringer weld；
The both ends of the first base support beam 5 are respectively at the rod chamber and second hydraulic cylinder for having first hydraulic cylinder 12
The bottom of 34 rod chamber connection, the rodless cavity of first hydraulic cylinder 12 and the rodless cavity of second hydraulic cylinder 34 and connecting bracket 7 connects
It connects.
Fig. 4 is hydraulic system principle figure of the invention.
Referring to fig. 4, the dynamical element of hydraulic system is constant pressure variable displacement pump, and the constant pressure variable displacement pump can maintain to export always
Pressure is constant, and when system unloaded, constant-pressure variable pump output flow very little is only used for maintaining internal system leakage, energy-saving effect
Preferably, when the pressure set by system is not up to it, the discharge capacity of constant pressure variable displacement pump is maximum；Constant pressure variable displacement pump is by phase asynchronous friendship
Motor drive is flowed, the motor rated power is 2.2kW, rated speed 2900rpm；Constant pressure variable displacement pump is inhaled from fuel tank
Oil；The oil outlet of constant pressure variable displacement pump two circuits in parallel, wherein connecting the oil inlet of overflow valve all the way, overflow valve is safety valve,
It can be by manually adjusting pressure unloading, and when system pressure is more than rated pressure, overflow valve opens off-load, anti-locking system pressure
Power is excessively high；The oil outlet of overflow valve connects cooler, can be used for cooling down the hot oil of overflow valve outflow, prevents system oil temperature mistake
It is high；The filter that the another way connecting band of the oil outlet of constant pressure variable displacement pump is shown, since system uses proportioning valve, proportioning valve pair
Oil contamination is very sensitive, therefore the filter filtering accuracy with display is higher, and can show stopping state prompt staff and
Shi Genghuan；
Filter oil outlet parallel connection two-way with display, wherein connecting the first uniform-pressure-drop valve all the way, first determines subtractive pressure
The oil outlet of valve connects the first 3-position 4-way proportional reversing valve, and the pressure oil port of the first uniform-pressure-drop valve connects the first shuttle valve, the
One uniform-pressure-drop valve and the first shuttle valve together constitute pressure compensating system, it can be ensured that the first 3-position 4-way proportional reversing valve passes through
Flow is only unrelated in relation to and with payload size with control signal, improves control precision；When the first 3-position 4-way proportional reversing valve
Position access system, first hydraulic cylinder rodless cavity oil inlet, when the first 3-position 4-way proportional reversing valve access system, first hydraulic cylinder has
Rod cavity oil inlet；Two hydraulic fluid ports of the first 3-position 4-way proportional reversing valve connect the first unidirectional valve group, and the first unidirectional valve group is hydraulic control shape
Formula can be used for locking the position of first hydraulic cylinder A10；
The another way of filter A5 oil outlet with display connects the second uniform-pressure-drop valve A11, the second uniform-pressure-drop valve A11
The pressure oil port that oil outlet connects the second 3-position 4-way proportional reversing valve A12, the second uniform-pressure-drop valve A11 connects the second shuttle valve
A13, the second uniform-pressure-drop valve A11 and the second shuttle valve A13 together constitute pressure compensating system, it can be ensured that the second 3-position 4-way ratio
Example reversal valve A12 by flow only with control signal in relation to unrelated with payload size, improve control precision；When the two or three
The position left position four-way proportional reversing valve A12 access system, second hydraulic cylinder A15 rodless cavity oil inlet, when the second 3-position 4-way ratio is changed
To the right position access system of valve, second hydraulic cylinder A15 rod chamber oil inlet；Two hydraulic fluid ports of the second 3-position 4-way proportional reversing valve connect
Second one-way valve group A14, second one-way valve group A14 are hydraulic control form, can be used for locking the position of second hydraulic cylinder A15.
Fig. 5 is control system figure of the invention.
Referring to Fig. 5, two hydraulic cylinders and two electric pushrods are mounted on stay wire sensor, and stay wire sensor is for real-time
The travel information of hydraulic cylinder and electric pushrod is obtained, the stay wire sensor is 24V power supply, 4-20mA analog output；
Angular transducer is used to measure the horizontality of leveling board, and the angular transducer is 24V power supply, 4-20mA mould
Analog quantity output exports 12-20mA electric current when angle is 0 ° -90 °, when angle is -90 ° -0 °, exports 4-12mA electric current；
The output signal of stay wire sensor and angular transducer inputs Analog input mModule, by Analog input mModule
Give controller processing；
Controller will control signal and give analog output module, and there are two functions for analog output module: 1 outputs it
Analog signals hydraulic proportion valve is controlled by amplifier, the positive and negative of output signal can control which position access of proportioning valve
System, the size of output signal can control the restriction aperture of proportioning valve, then control hydraulic cylinder speed；Amplifier is put
Large gain should match with selected proportioning valve；The analog quantity of 2 analog output modules output accesses PWM governor, PWM tune
Fast device controls the speed of electric pushrod according to the size of input signal by the way of decompression speed, which is permanent turn
Square speed regulation, the occasion little suitable for electric pushrod thrust variation；
Controller and computer configuration communicate, can be real-time by the output signal of the signal of sensor and analog output module
Acquisition and recording is analyzed for post-processing.
In this embodiment, the adaptive profiling testing stand is used to transplant and sow the simulated experiment of equipment.
It is the preferred embodiment of the present invention above, those of ordinary skill in the art can also carry out various changes on this basis
It changes or improves, under the premise of not departing from the present invention total design, these transformation or improve all should belong to that the present invention claims guarantors
Within the scope of shield.
Claims (5)
1. a kind of adaptive profiling testing stand, it is characterised in that:
Including mechanical structure portion, hydraulic system part, control system part；
The mechanical structure portion includes adjusting for simulating the transplanting in actual production process and the leveling board (1) of sowing equipment
Plate (1) is parallel with connecting plate (2) to be connected close to setting, and for connecting plate (2) centered on its planar central, surrounding is symmetrically arranged with the
One, second, third, the 4th waist type sliding slot (21,22,26,28), bolt is installed, and pass through the bolt in each waist type sliding slot
It is connect with leveling board (1)；Leveling board (1) side is equipped with the first push rod connection frame (15), the intermediate aperture installation of connecting plate (2)
Clutch disk (30), clutch disk (30) respectively limit leveling board (1) and connecting plate (2) by bolt, make leveling board (1) can
It is rotated in the range of ± 10 ° with the center of circle around clutch disk (30), the first, second, third, fourth waist type in rotation process
Bolt in sliding slot slides in corresponding sliding slot respectively, and the position of connecting plate (2) is fixed；At left and right sides of connecting plate upper layer respectively
Be symmetrical arranged the first upper layer of connecting plate lug (3) and the second upper layer of connecting plate lug (24), the first upper layer of connecting plate lug (3) and
First upper junction plate (35) rotation connection, the second upper layer of connecting plate lug (24) and the second upper junction plate (4) are rotatablely connected；Connection
It is symmetrically arranged the first lower layer of connecting plate lug (38) and the second lower layer of connecting plate lug (39) at left and right sides of plate lower layer, is connected
The first lower layer of plate lug (38) and the first lower connecting plate (36) are rotatablely connected, and are connected under the second lower layer of connecting plate lug (17) and second
Fishplate bar (37) rotation connection；The one side of connecting plate is welded with the first push rod pedestal (14), the first push rod pedestal (14) and first
The lower rotation of electric pushrod (13) connects, and the top of first electric pushrod (13) and the first push rod connection frame (15) turn
Dynamic connection；In initial position, the first electric pushrod is in the half of stroke, according to the feedback signal controller of obliquity sensor
The flexible of the first electric pushrod (13) is controlled, so that leveling board (1) is in horizontality always；The middle position of connecting plate is arranged
Lug (40) among connecting plate；Connecting bracket (7) is for the connection between adaptive feeler mechanism and pedestal；The connection branch
The second push rod pedestal (18) is fixedly installed on frame (7)；The bottom of second electric pushrod (33) and the second push rod pedestal (18) rotate
Lug (40) is rotatablely connected among connection, the top of the second electric pushrod (33) and connecting plate；In initial position, second is electronic
Push rod is in the half of stroke, according to the retracted position of first hydraulic cylinder (12) and second hydraulic cylinder (34) by controller control the
Two electric pushrods (18) stretch, to realize that leveling board carries out vertical adjustment up and down according to the pavement state that hydraulic cylinder is simulated；Even
It connects and is symmetrically arranged the first upper layer of connecting bracket lug (6) at left and right sides of bracket (7) upper layer and the second upper layer of connecting bracket is convex
Ear (25), connecting bracket the first upper layer lug and the first upper junction plate (35) are rotatablely connected, the second upper layer of connecting bracket lug
(17) it is rotatablely connected with the second upper junction plate (24)；It is symmetrically arranged under connecting bracket first at left and right sides of connecting bracket lower layer
Layer lug (6) and the second lower layer of connecting bracket lug (17), the first lower layer of connecting bracket lug (6) and the first lower connecting bracket
(36) it is rotatablely connected, the second lower layer of connecting bracket lug (17) and second lower connecting bracket (37) rotation connection；
The hydraulic system part includes dynamical element, and dynamical element is constant pressure variable displacement pump；The oil outlet of constant pressure variable displacement pump is in parallel
Two circuits, wherein connecting the oil inlet of overflow valve all the way；The oil outlet of overflow valve connects cooler, for cooling down overflow valve stream
Hot oil out；The filter that the another way connecting band of the oil outlet of constant pressure variable displacement pump is shown, the filter oil outlet with display is simultaneously
Join two-way, wherein connecting the first uniform-pressure-drop valve all the way, the oil outlet of the first uniform-pressure-drop valve connects the first 3-position 4-way ratio
The pressure oil port of reversal valve, the first uniform-pressure-drop valve connects the first shuttle valve, and the first uniform-pressure-drop valve and the first shuttle valve collectively form
First pressure compensation system；Two hydraulic fluid ports of the first 3-position 4-way proportional reversing valve connect the first unidirectional valve group, the first unidirectional valve group
For hydraulic control form, for the position of first hydraulic cylinder to be locked；First hydraulic cylinder is single-piston rod double acting hydraulic cylinder；Band display
Filter (A5) oil outlet another way connect the second uniform-pressure-drop valve, the second uniform-pressure-drop valve oil outlet connect the two or three
The pressure oil port of four-way proportional reversing valve, the second uniform-pressure-drop valve connects the second shuttle valve, the second uniform-pressure-drop valve and the second shuttle valve
Together constitute second pressure compensation system；Two hydraulic fluid ports of the second 3-position 4-way proportional reversing valve connect second one-way valve group,
Second one-way valve group is hydraulic control form, for locking the position of second hydraulic cylinder；；
The control system part includes: the bracing wire sensing being installed on the first, second hydraulic cylinder and the first, second electric pushrod
Device, stay wire sensor obtain the travel information of the first, second hydraulic cylinder and the first, second electric pushrod in real time；It is adjusted for measuring
The angular transducer of flatbed horizontal state, stay wire sensor and angular transducer are respectively connect with Analog input mModule, simulation
Amount input module is connect with controller；Controller is connect with analog output module, the mould that analog output module is output it
Analog quantity signal controls hydraulic proportion valve, the position of the positive negative control proportioning valve access system of output signal after being amplified by amplifier
It sets, the restriction aperture of the size control proportioning valve of output signal then controls hydraulic cylinder speed；Meanwhile analog output
The analog quantity of module output accesses PWM governor, and PWM governor controls the speed of corresponding electric pushrod by the way of decompression speed
Degree.
2. adaptive profiling testing stand as described in claim 1, it is characterised in that:
The mechanical structure portion further includes pedestal, pedestal by first base support beam (5), second base support beam (8),
Third pedestal support beam (9), first base support stringer (41) and second base support stringer (42) composition, described second
Pedestal support beam (8) and third pedestal support beam (9) are for carrying counterweight (10)；Pedestal is propped up by pedestal supporting leg (11)
Support, pedestal supporting leg (11) are welded and fixed with pedestal support stringer.
3. adaptive profiling testing stand as claimed in claim 2, it is characterised in that: the first base support beam (5)
Both ends connect respectively at the rod chamber of the rod chamber of first hydraulic cylinder (12) and second hydraulic cylinder (34), first hydraulic cylinder
(12) rodless cavity of rodless cavity and second hydraulic cylinder (34) is connect with the bottom of connecting bracket (7) respectively.
4. adaptive profiling testing stand as described in claim 1, it is characterised in that: controller and computer configuration communicate, will
The signal of sensor and the real-time acquisition and recording of the output signal of analog output module are analyzed for post-processing.
5. adaptive profiling testing stand as described in claim 1, it is characterised in that: the adaptive profiling testing stand is for moving
Plant and sow the simulation test of equipment.
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