CN104568421B - Dynamic load testing testbed for agricultural mechanical rotary cultivation part - Google Patents
Dynamic load testing testbed for agricultural mechanical rotary cultivation part Download PDFInfo
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- CN104568421B CN104568421B CN201510040642.9A CN201510040642A CN104568421B CN 104568421 B CN104568421 B CN 104568421B CN 201510040642 A CN201510040642 A CN 201510040642A CN 104568421 B CN104568421 B CN 104568421B
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Abstract
The invention discloses a dynamic load testing testbed for an agricultural mechanical rotary cultivation part. The dynamic load testing testbed comprises a soil groove and a trolley, wherein the trolley comprises a trolley rack, a rotary cultivation system, a soil compaction system, a soil leveling system and a walking system, the rotary cultivation system is installed at the front end of the trolley rack, the soil compaction system is installed at the rear end of the trolley rack, the soil leveling system is installed on the trolley rack and located between the rotary cultivation system and the soil compaction system, and the walking system is installed on the trolley rack. The testbed represents operation of the rotary cultivation part based on the soil groove and tests dynamic load of the rotary cultivation part. The dynamic load testing testbed has the advantages that the dynamic load testing testbed is not limited by seasons and farming seasons, can conduct real-time recovery processing on soil according to different demands, is good in testing repeatability, is not influenced by outside climate and natural conditions and the like, and can provide data support for theoretical research and design improvement of coil cultivation parts on the basis that a large number of resources are saved.
Description
Technical field
The invention belongs to agricultural machinery technical field of measurement and test, dynamically bear particularly to a kind of agricultural machinery rotary cultivating part
Lotus is test bed.
Background technology
Soil cultivation part is the core component of agricultural machinery, and its soil cutting performance directly affects the energy of agricultural machinery
Consume and farming efficiency.Soil cultivation part be mainly subject to complicated and the load of change at random acts on from topsoil soils, due to
Resistance is excessive, and it is short to often result in soil cultivation part active time, or even the phenomenons such as bending, fracture.Therefore, to soil cultivation
The dynamic load of part carries out real-time testing, studies its mechanical characteristic in cultivating procedure and rule, will be soil cultivation portion
The design of part, selection and its failure modes analysis provide important test data and technological means, and can set for its drag reduction consumption reduction
Meter provides valuable reference.
Compared with field test, soil bin test has not a season and farming season and is limited, can be needed to soil according to difference
Carry out real-time recovery process, test repeatability is good and is not subject to the advantages of outside climatic and effect of natural conditions.Appear in the newspapers at present
The soil-engaging component assay device based on soil slot test stand, be primarily present following deficiency：1st, soil slot test stand and its chassis size
Specification compares larger, and the table system realizing difference in functionality (as rotary tillage, smooth, compacting etc.) is relatively independent；2nd, most
Assay device Road test is single, is confined to moment of torsion test data more；3rd, most assay devices are for single roll structure, are only limitted to
The experimental study such as single roller hilted broadsword or multitool；4th, most assay devices are only limitted to special test, workpiece interchangeability and versatility
Poor.For this reason, it is necessary to develop a kind of highly versatile, can convenient, effectively carry out the examination of soil cultivation part dynamic load test
Test platform.
Content of the invention
For above-mentioned deficiency of the prior art, present invention is primarily intended to providing a kind of highly versatile, can be convenient, effective
Carry out the testing stand of rotary cultivating part dynamic load test.
To achieve these goals, the technical solution used in the present invention is as follows：
Agricultural machinery rotary cultivating part dynamic load is test bed, and including soil box and chassis, chassis includes chassis machine
Frame, rotary tillage system, soil compression system, land smoothing system and running gear, described rotary tillage system is arranged on chassis frame
Front end, soil compression system is arranged on the rear end of chassis frame, and land smoothing system is arranged in chassis frame and is located at rotary tillage
Between system and soil compression system, running gear is arranged in chassis frame.
Described rotary tillage system includes rotary tillage frame, tilling depth adjusting means, rotary tillage motor, relief means, chain biography
Dynamic device, one-level reverse drive gear, traveling box, rotor and guide runner a, rotary tillage motor, tilling depth adjusting means, impact
Buffer unit and one-level reverse drive gear are installed in rotary tillage frame, rotary tillage frame by guide runner chute mode with
Chassis frame connects.
The power of described rotary tillage motor passes to one-level reverse drive gear through chain and sprocket driving device, commutates through one-level and passes
Traveling box is passed to, described rotor is arranged on traveling box output shaft after dynamic device commutation.
Described tilling depth adjusting means includes servo electric jar and the installing rack for fixedly mounting servo electric jar, servo electricity
The cylinder body of dynamic cylinder is fixedly mounted in chassis frame by installing rack, and its push rod is connected with rotary tillage frame by bolt.
Described relief means include adjusting rod, adjust spring and auxiliary stand；Auxiliary stand is fixedly mounted on chassis
In frame, the through hole passing through for adjusting rod is offered on auxiliary stand；The upper end suspension of adjusting rod, lower end passes through auxiliary stand
On through hole and be fixed in rotary tillage frame；Adjust spring to be set on adjusting rod, the lower end adjusting spring is fixedly connected on rotation
In cultivated frame, upper end is limited in auxiliary stand.
Described soil box is linear type, the both sides of soil box is provided with the track for road wheel walking, above the outside of track
Tooth bar is installed.
Described running gear includes chassis motor, first rotating shaft and the second rotating shaft, and first rotating shaft is arranged on chassis machine
The front end of frame, the second rotating shaft is arranged on the rear end of chassis frame；The two ends of first rotating shaft and the second rotating shaft be separately installed with
The road wheel that soil box track matches, at the two ends of first rotating shaft and be located at outside road wheel and be provided with tooth bar phase with soil box
The driving gear of engagement；Chassis motor power passes to first rotating shaft through drive system, drives road wheel and driving gear
Rotate.
Further, described soil compression system includes suppressing suspension, synchronization lifting mechanism, earth pack device and guide runner
b；Described suppression suspension is connected with chassis frame by guide runner chute mode, and the main shaft of earth pack device is pacified by bearing
It is contained on the vertical rack of suppression suspension, synchronization lifting mechanism is arranged on the horizontal stand of suppression suspension.
Described synchronization lifting mechanism includes lifting motor, shaft coupling, diverter, connecting shaft and spiral lift a；Rise
The output shaft of fall motor is connected with diverter input shaft by shaft coupling；Diverter is T-shaped diverter, two of diverter
Horizontal output shaft passes through one end connection of shaft coupling and corresponding connecting shaft respectively, the other end of connecting shaft by shaft coupling with corresponding
Spiral lift a input shaft connects；Spiral lift a is self locking type worm gear-worm spiral lift, and its upper end suspends, lower end snail
Bar working end is connected with the horizontal stand of suppression suspension.
Further, described land smoothing system includes clean-up scraper suspension, scraping plate lifting motor, clean-up scraper lifting dress
Put and the clean-up scraper with rake, clean-up scraper suspension is fixedly mounted in chassis frame, scraping plate lifting motor and clean-up scraper liter
Falling unit is arranged on clean-up scraper suspension.
Described clean-up scraper lowering or hoisting gear includes spiral lift b, connecting rod and fixed seat, scraping plate lifting motor defeated
Shaft is connected with the input shaft of spiral lift b by shaft coupling, and this spiral lift b is worm and gear spiral lift；Institute
The one end stating connecting rod is hollow-core construction and offers female thread, the other end offers through hole；Fixed seat is connected with clean-up scraper,
U-shaped connecting seat is provided with fixed seat, offers through hole at the two ends of U-shaped connecting seat；One end of connecting rod is coordinated by screw thread
It is fixedly connected with the worm screw working end of spiral lift b, the other end is fixed on the U-shaped company of fixed seat by pin or other connector
On joint chair.
Further, described traveling box output shaft is double output shaft, and rotor is two groups, and two groups of rotors are symmetrically mounted on walking
On the output shaft of case both sides.
Further, described servo electric jar is Zigzag type servo electric jar, the servomotor of servo electric jar and cylinder body
It is arranged in parallel, the output shaft of servomotor passes through Timing Belt and synchronous pulley is connected with the drive lead screw of servo electric jar.
Further, described land smoothing system also includes contiguous block and mobile guide pillar, and the two ends of described mobile guide pillar are solid
Dingan County is contained on clean-up scraper suspension, and the side of contiguous block is mounted by means of bolts on clean-up scraper, and opposite side passes through the axis of guide
Hold and be arranged on mobile guide pillar and can move axially along mobile guide pillar.
Further, described clean-up scraper suspension from top to bottom includes horizontally disposed first level support, the second water successively
Flat support and the 3rd horizontal stand, the two ends of first level support, the second horizontal stand and the 3rd horizontal stand all with corresponding
Side supports are fixedly connected；The first level support of clean-up scraper suspension is connected with chassis frame；Described scraping plate lifting motor
It is fixedly mounted on the second horizontal stand by mounting seat respectively with clean-up scraper lowering or hoisting gear；Described mobile guide pillar is arranged on second
Between horizontal stand and the 3rd horizontal stand and its two ends is fixedly mounted on the second horizontal stand and the 3rd level along vertical
On support.
Further, the maximum functional stroke of described servo electric jar is 300mm, and push rod operating rate is 200mm/s, watches
Taking power of motor is 0.4kw, and single cylinder bearing capacity is 80kg.
Further, the maximum functional stroke of described synchronization lifting mechanism is 230mm, the worm screw work of spiral lift a
Speed is 50mm/s, and lift capability is 1000kg.
With respect to prior art, the present invention has the advantages that：
1st, this testing stand is based on soil bin simulation reproduction rotary cultivating part operation, and its dynamic load is tested.Tool
Not season and farming season is had to be limited, can to need soil is carried out real-time recovery process, test repeatability according to difference good and not
The advantages of by outside climatic and effect of natural conditions.Theory for soil cultivation part can grind on the basis of saving ample resources
Study carefully and provide data to support with Curve guide impeller.
2nd, this testing stand both can achieve the real-time testing of rotary cultivating part dynamic load, again can be to different shape or difference
Under the conditions of quantity or the knife combination of different arrangement mode, and different tilling depth, different cultivated speed etc. during rotary cultivating part operation
Load carry out contrast test analysis.Result of the test can design for rotary cultivating part, select and its failure modes analysis offer
Important test data and technological means.
3rd, using the electric cylinder based on servomotor, tilth is adjusted, the rotary motion of servomotor is passed through
Screw mandrel is converted into moving along a straight line, and controls the precise rotation of servomotor, accurate revolution controls, accurate torque controls and changes simultaneously
Control for precise speed control, Accurate Position Control, accurate thrust, thus realizing tilth is precisely controlled.This breaks through
The rotary tillage system of traditional soil bin test chassis realizes the pattern of tilth regulation using hydraulic system, is conducive to shortening response
Time, improve degree of regulation, and simplified system control strategy and flow process, save maintenance cost.
4th, traveling box output shaft is double output shaft, and two groups of rotors are symmetrical set, and change traditional single roller test model,
Also closer to the actual state of cultivation of agricultural machinery rotary tillage system.Meanwhile, using prototype cultivating member, prototype traveling box, can lead to
The real behavior that overtesting directly obtains soil cultivation part characterizes.
5th, it is provided with relief means.During use, the adjusting rod of relief means passes through and is fixedly mounted on chassis machine
The through hole on auxiliary stand on frame, and so that regulation spring is located between rotary tillage frame and auxiliary stand, adjust the lower end of spring
It is fixedly connected in rotary tillage frame, upper end is limited in auxiliary stand.By adjusting the damping effect of spring, will bear directly against rotation
Impact shock part in cultivated frame is transferred to chassis frame, to reduce impact shock during rotary tillage process, electric cylinder is carried out
Protection.
6th, this testing stand carries out smooth process by land smoothing system to the soil after farming, then by soil compression system
Compaction treatment is carried out to top layer and deep soil, with reach the soil compactibility of test requirements document it is ensured that soil-engaging component operation all the time
It is for essentially identical soil environment, so that relevant test data has stronger repeatability and comparability.This is
System can be by adjusting the scraping depth adjustment that clean-up scraper lowering or hoisting gear is realized in the range of 0-60mm, and using based on motor
The compacting depth that synchronization lifting mechanism is realized in the range of 0-230mm is adjusted, and this regulative mode breaches traditional soil box further
Testing stand realizes the pattern of depth adjustment using hydraulic system, is conducive to shortening response time, improves degree of regulation, and simplify system
System control strategy and flow process, cost-effective.
Brief description
Fig. 1 is test platform structure schematic diagram of the present invention；
Fig. 2 is rotary tillage system structure diagram；
Fig. 3 is servo electric jar structural representation；
Fig. 4 is soil compression system structure diagram；
Fig. 5 is land smoothing system structure diagram；
Fig. 6 is land smoothing system another side structural representation；
Fig. 7 is synchronization lifting mechanism structural representation.
Wherein, 1 is chassis frame, and 2 is rotary tillage system, and 21 is rotary tillage frame, and 22 is servo electric jar, and 23 is damping of shocks
Device, 24 is rotary tillage motor, and 25 is one-level reverse drive gear, and 26 is traveling box, and 27 is rotor, and 28 is guide runner a,
29 is spheric washer, and 221 is servomotor, and 222 is cylinder body, and 223 is push rod, and 231 is adjusting rod, and 232 is to adjust spring, 233
For auxiliary stand, 3 is soil compression system, and 31 is suppression suspension, and 32 is synchronization lifting mechanism, and 33 is earth pack device, and 34 lead
To slide block b, 321 is lifting motor, and 322 is shaft coupling, and 323 is diverter, and 324 is connecting shaft, and 325 is spiral lift
A, 326 is flange, and 4 is land smoothing system, and 41 is clean-up scraper suspension, and 42 is scraping plate lifting motor, and 43 is contiguous block, 44
For mobile guide pillar, 45 is clean-up scraper, and 46 is rake, and 47 is clean-up scraper lowering or hoisting gear, and 48 is mounting seat, and 411 prop up for first level
Frame, 412 is the second horizontal stand, and 413 is the 3rd horizontal stand, and 414 is side fixed support, and 471 is spiral lift b, 472
For connecting rod, 473 is fixed seat, and 5 is running gear, and 51 is chassis motor, and 52 is reductor, and 53 is first rotating shaft, 54
For the second rotating shaft, 55 is road wheel, and 56 is driving gear, and 6 is soil box, and 61 is track, and 62 is tooth bar.
Specific embodiment
The present invention is further detailed explanation with example below in conjunction with the accompanying drawings.
Referring to Fig. 1：Agricultural machinery rotary cultivating part dynamic load is test bed, including soil box 6 and chassis, chassis bag
Include chassis frame 1, rotary tillage system 2, soil compression system 3, land smoothing system 4 and running gear 5.Rotary tillage system 2 is arranged on
In chassis frame 1, the distance between rotary tillage system 2 and chassis frame 1 front end less than rotary tillage system 2 and chassis frame 1 rear end it
Between distance.Soil compression system 3 is arranged in chassis frame 1, between soil compression system 3 and chassis frame 1 front end away from
From more than the distance between soil compression system 3 and chassis frame 1 rear end.Land smoothing system 4 is arranged in chassis frame 1,
And be located between rotary tillage system 2 and soil compression system 3.Running gear 5 is arranged in chassis frame 1, and running gear 5 is chassis
Mobile offer power simultaneously drives chassis to move on soil box 6.In the present invention, with testing stand car direction of advance identical one end it is
Chassis frame 1 front end, the other end is chassis frame 1 rear end.
Soil box 6 is linear type, and the both sides of soil box 6 are provided with the track 61 for road wheel 55 walking, the outside of track 61
Top is provided with tooth bar 62, is provided with rack support device at a certain distance.
Running gear 5 includes chassis motor 51, reductor 52, first rotating shaft 53, the second rotating shaft 54, road wheel 55 and
Driving gear 56.The output shaft of chassis motor 51 is connected with reductor 52 input shaft by belt.Defeated in reductor 52
Second drive sprocket is provided with shaft, the second driven sprocket, the diameter of the second drive sprocket are provided with first rotating shaft 53
Less than the diameter of the second driven sprocket, the second drive sprocket is connected by chain with the second driven sprocket.First rotating shaft 53 is to drive
Moving axis, the second rotating shaft 54 is nonpowered axle, and first rotating shaft 53 is arranged on the front end of chassis frame 1, the second rotating shaft 54 by bearing
It is arranged on the rear end of chassis frame 1 by bearing.It is mounted on road wheel 55 at the two ends of first rotating shaft 53 and the second rotating shaft 54,
This road wheel 55 can be mobile along the track 61 of soil box 6, and chassis is played a supportive role.At the two ends of first rotating shaft 53 and be located at
The outside of road wheel 55 is provided with driving gear 56, and this driving gear 56 tooth bar 62 corresponding with soil box 6 both sides engages.Chassis drives
The power of galvanic electricity machine 51 passes to reductor 52 through belt transmission, carries out second deceleration by Chain conveyer after deceleration, passes after deceleration
Pass first rotating shaft 53, road wheel 55 in first rotating shaft 53 for the drive installation and driving gear 56 rotate, thus driving chassis
Mobile.
Referring to Fig. 2 and Fig. 3：Rotary tillage system 2 includes rotary tillage frame 21, tilling depth adjusting means, rotary tillage motor 24, impact
Buffer unit 23, chain and sprocket driving device, one-level reverse drive gear 25, traveling box 26, rotor 27 and guide runner a28, rotary tillage is driven
Galvanic electricity machine 24, tilling depth adjusting means, relief means 23 and one-level reverse drive gear 25 are installed in rotary tillage frame 21,
Rotary tillage frame 21 is arranged in chassis frame 1.Rotary tillage motor 24 output shaft is provided with the first drive sprocket, in one-level
One end of reverse drive gear 25 input shaft is provided with the first driven sprocket, and the first drive sprocket and the first driven sprocket pass through chain
Bar connects.The other end of one-level reverse drive gear 25 input shaft is provided with the first umbrella tooth, and one-level reverse drive gear 25 exports
The upper end of axle is provided with the second umbrella tooth, and the first umbrella tooth is engaged with the second umbrella tooth.The lower end of one-level reverse drive gear 25 output shaft
It is connected with traveling box 26 input shaft.Traveling box 26 output shaft is double output shaft, and rotor 27 is two groups, and two groups of rotors 27 are symmetrically installed
On the output shaft of traveling box 26 both sides.Rotary tillage motor 24 imparts power to one-level commutation transmission by chain and sprocket driving device
Device 25, one-level reverse drive gear 25 imparts power to traveling box 26 by gear drive, and traveling box 26 drives and is arranged on
Rotor 27 on traveling box 26 output shaft rotates, and carries out farming to soil.Two groups of rotors 27 are symmetrical set, and change traditional
Single roller test model, also closer to the actual state of cultivation of agricultural machinery rotary tillage system 2.Meanwhile, using prototype cultivating member, former
Type traveling box 26, can be characterized by the real behavior that test directly obtains soil cultivation part.
Tilling depth adjusting means includes servo electric jar 22, the installing rack for fixedly mounting servo electric jar 2.Electric cylinder
Cylinder body 222 is fixedly mounted in test chassis frame 1 by installing rack, and its push rod 223 by spheric washer 29 and passes through bolt
It is connected to the stress that servo electric jar 22 can be improved on rotary tillage frame 21.Tilling depth adjusting means is driven using servomotor 221
Electric cylinder, realizes the regulation of rotary tillage system 2 tilth.The maximum functional stroke of servo electric jar 22 is 300mm, push rod 223
Operating rate is 200mm/s, and servomotor 221 power is 0.4kw, and single cylinder bearing capacity is 80kg, achievable 0-300mm scope
Interior tilth is adjusted.
In the present embodiment, servo electric jar 22 adopts Zigzag type servo electric jar, the servomotor 221 of electric cylinder and cylinder body
222 be arranged in parallel, and the output shaft of servomotor 221 passes through Timing Belt and synchronous pulley is connected with the drive lead screw of electric cylinder, will
The power output of servomotor 221, to screw mandrel, drives screw mandrel to rotate, and its installation site flexibly, is installed easily, sets simple, makes
With facilitating, and there is higher controlling and control accuracy.
Relief means 23 include adjusting rod 231, adjust spring 232 and auxiliary stand 233.Auxiliary stand 233 is fixing
It is arranged in chassis frame 1, the through hole passing through for adjusting rod 231 is offered on auxiliary stand 233.The upper end of adjusting rod 231
Suspension, lower end pass through auxiliary stand 233 on through hole and be fixedly connected in rotary tillage frame 21.Adjust spring 232 and be set in tune
On pole 231, the lower end adjusting spring 232 is fixedly connected in rotary tillage frame 21, and upper end is limited in auxiliary stand 233.Pass through
Adjust the damping effect of spring 232, the impact shock part that will bear directly against in rotary tillage frame 21 is transferred to chassis frame 1,
To reduce impact shock during rotary tillage process, electric cylinder is protected.
By arranging tilling depth adjusting means in rotary tillage system 2, the servo electric jar 22 being driven using servomotor 221 is right
Tilth is adjusted, and the rotary motion of servomotor 221 is converted into moving along a straight line by screw mandrel, simultaneously by servomotor
221 precise rotation controls, accurate revolution controls, accurate torque control is changed into precise speed control, Accurate Position Control, essence
Really thrust controls, thus realizing tilth is precisely controlled.The rotary tillage system that this breaches traditional soil bin test chassis is adopted
Realize the pattern of tilth regulation with hydraulic system, be conducive to shortening response time, improve degree of regulation, and simplified system control
System strategy and flow process, save maintenance cost.
Referring to Fig. 4 and Fig. 7：Soil compression system 3 includes suppressing suspension 31, synchronization lifting mechanism 32, earth pack device 33
With with guide runner b34 etc., suppression suspension 31 is connected with chassis frame 1 by guide runner chute mode, this suppression suspension
31 is U-shaped frame structure, and it includes horizontal stand and is arranged on the vertical rack at horizontal stand two ends, the main shaft of earth pack device 33
It is arranged on the vertical rack of suppression suspension 31 by bearing, synchronization lifting mechanism 32 is arranged on the horizontal stand of suppression suspension 31
On.
Synchronization lifting mechanism 32 includes lifting motor 321, shaft coupling 322, diverter 323, connecting shaft 324 and spiral
Elevator a325.The shell of diverter 323 and spiral lift a325 is all by being set in parallel in the fixed strip in chassis frame 1
It is fixed in chassis frame 1, spiral lift a325 is self locking type worm gear-worm spiral lift, the snail of spiral lift a325
Bar working end is connected through the space two fixed strips with suppression suspension 31.Lifting motor 321 is motor, lifting
The output shaft of motor 321 is connected with diverter 323 input shaft by shaft coupling 322.Diverter 323 is T-shaped diverter
323, two horizontal output shafts of diverter 323 are passed through shaft coupling 322 respectively and are connected with one end of corresponding connecting shaft 324, connect
The other end of axle 324 is connected with corresponding spiral lift a325 input shaft by shaft coupling 322.The worm screw of spiral lift a325
Working end is passed through flange 326 and is connected with the support of suppression suspension 31.Using the synchronization lifting mechanism 32 based on motor, can be real
The now regulation to compacting depth, range of accommodation is 0-230mm, and when compacting depth reaches setting value, spiral lift a325 has
There is auto-lock function, to realize constant compacting depth compacting.
In the present embodiment, the maximum functional stroke of synchronization lifting mechanism 32 is 230mm, the worm screw work of spiral lift a325
Making speed is 50mm/s, and lift capability is 1000kg.The cylinder of earth pack device 33 is hollow-core construction, can be by filling out in cylinder
Fill the quality that the implants such as sandy soil or iron filings change earth pack device 33, be compacted with the soil horizon realizing different depth.Suppression
Device cylinder external diameter is 400mm, and land presser cylinder internal diameter is 350mm, and land presser drum functions fabric width is 1300mm, land presser cylinder
Material is casting pig, and land presser cylinder designing quality is 300kg.
Referring to Fig. 5 and Fig. 6：Land smoothing system 4 includes clean-up scraper suspension 41, scraping plate lifting motor 42, clean-up scraper
Lowering or hoisting gear 47, contiguous block 43, mobile guide pillar 44, clean-up scraper 45 and rake 46.Rake 46 is arranged on clean-up scraper 45.Clean-up scraper
Suspension 41 from top to bottom includes horizontally disposed first level support 411, the second horizontal stand 412 and the 3rd horizontal stand successively
413, the two ends of first level support 411, the second horizontal stand 412 and the 3rd horizontal stand 413 are all solid with the side of corresponding end
Fixed rack 414 is fixedly connected.The first level support 411 of clean-up scraper suspension 41 is solid with the suppression suspension 31 of soil compression system 3
Fixed connection.Contiguous block 43 is installed with clean-up scraper 45, the side of this contiguous block 43 is mounted by means of bolts on scraping
On plate 45, opposite side is passed through mobile guide pillar 44 and is arranged on mobile guide pillar 44 by guide bearing, and this contiguous block 43 can be along shifting
Dynamic guide pillar 44 moves axially.Mobile guide pillar 44 is arranged on the second horizontal stand 412 and the 3rd horizontal stand of clean-up scraper suspension 41
Between 413 and its two ends are fixedly mounted on the second horizontal stand 412 of clean-up scraper suspension 41 along vertical and the 3rd level is propped up
On frame 413.In the present embodiment, contiguous block 43 is two pieces, and corresponding mobile guide pillar 44 is two.
Scraping plate lifting motor 42 and clean-up scraper lowering or hoisting gear 47 are fixedly mounted on the second water by mounting seat 48 respectively
On flat support 412.Clean-up scraper lowering or hoisting gear 47 includes spiral lift b471, connecting rod 472 and fixed seat 473, scraping plate lifting
The output shaft of motor 42 is connected with the input shaft of spiral lift b471 by shaft coupling, and this spiral lift b471 is snail
Worm and gear spiral lift.One end of connecting rod 472 is hollow-core construction and offers female thread, the other end offers through hole；Gu
Reservation 473 is fixedly mounted on clean-up scraper 45, is provided with U-shaped connecting seat, opens up at the two ends of U-shaped connecting seat in fixed seat 473
There is through hole；One end of connecting rod 472 is fixedly connected with the worm screw working end of spiral lift b471 by screw thread cooperation, the other end
It is fixed on the U-shaped connecting seat of fixed seat 473 by pin or other connector.
Land smoothing system 4 carries out smooth process to the soil after rotary tillage system 2 farming, more right by soil compression system 3
Top layer and deep soil carry out compaction treatment, to reach the soil compactibility of test requirements document it is ensured that soil-engaging component operation is all the time
For essentially identical soil environment, so that relevant test data has stronger repeatability and comparability.This soil
Recovery device can realize the scraping depth adjustment in the range of 0-60mm by adjusting clean-up scraper lowering or hoisting gear, and using based on step
The compacting depth that the synchronization lifting mechanism 32 of stepper motor is realized in the range of 0-230mm is adjusted.This regulative mode breaches tradition
Soil slot test stand realizes the pattern of depth adjustment using hydraulic system, is conducive to shortening response time, improves degree of regulation, and letter
Change system control strategy and flow process, cost-effective.
This testing stand is based on soil bin simulation and reproduces rotary cultivating part operation, and its dynamic load is tested.Have
Season and farming season are not limited, can need soil is carried out with real-time recovery process according to difference, test repeatability is good and is not subject to
The advantages of outside climatic and effect of natural conditions.It can be the theoretical research of soil cultivation part on the basis of saving ample resources
Data is provided to support with Curve guide impeller.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the middle of the right of invention.
Claims (9)
1. agricultural machinery rotary cultivating part dynamic load test bed it is characterised in that including soil box (6) and chassis, platform
Car includes chassis frame (1), rotary tillage system (2), soil compression system (3), land smoothing system (4) and running gear (5), institute
State the front end that rotary tillage system (2) is arranged on chassis frame (1), soil compression system (3) is arranged on the rear end of chassis frame (1),
Land smoothing system (4) is arranged on chassis frame (1) above and is located between rotary tillage system (2) and soil compression system (3), OK
Walking system (5) is arranged in chassis frame (1)；
Described rotary tillage system (2) includes rotary tillage frame (21), tilling depth adjusting means, rotary tillage motor (24), damping of shocks dress
Put (23), chain and sprocket driving device, one-level reverse drive gear (25), traveling box (26), rotor (27) and guide runner a (28), rotation
Cultivated motor (24), tilling depth adjusting means, relief means (23) and one-level reverse drive gear (25) are installed in rotation
On cultivated frame (21), rotary tillage frame (21) is connected with chassis frame (1) by guide runner chute mode；
The power of described rotary tillage motor (24) passes to one-level reverse drive gear (25) through chain and sprocket driving device, changes through one-level
Pass to traveling box (26) to after actuating device (25) commutation, described rotor (27) is arranged on traveling box (26) output shaft；
Described tilling depth adjusting means includes servo electric jar (22) and is used for fixedly mounting the installing rack of servo electric jar (22), watches
The cylinder body (222) taking electric cylinder (22) is fixedly mounted in chassis frame (1) by installing rack, and its push rod (223) passes through bolt
It is connected with rotary tillage frame (21)；
Described relief means (23) include adjusting rod (231), adjust spring (232) and auxiliary stand (233)；Auxiliary stand
(233) it is fixedly mounted in chassis frame (1), the through hole passing through for adjusting rod (231) is offered on auxiliary stand (233)；
Adjusting rod (231) upper end suspension, lower end pass through auxiliary stand (233) on through hole and be fixed in rotary tillage frame (21)；Adjust
Section spring (232) is set on adjusting rod (231), and the lower end adjusting spring (232) is fixedly connected in rotary tillage frame (21), on
End is limited in auxiliary stand (233)；
Described soil box (6) is linear type, and the both sides of soil box (6) are provided with the track (61) walked for road wheel (55), track
(61) tooth bar (62) is installed above outside；
Described running gear (5) includes chassis motor (51), first rotating shaft (53) and the second rotating shaft (54), first rotating shaft
(53) it is arranged on the front end of chassis frame (1), the second rotating shaft (54) is arranged on the rear end of chassis frame (1)；In first rotating shaft
(53) two ends of and the second rotating shaft (54) are separately installed with the road wheel (55) matching with soil box track (61), in first rotating shaft
(53) two ends and be located at and be provided with, outside road wheel (55), the driving gear (56) being meshed with the tooth bar (62) of soil box；Platform
Car motor (51) power passes to first rotating shaft (53) through drive system, drives road wheel (55) and driving gear (56) to turn
Dynamic.
2. agricultural machinery rotary cultivating part dynamic load according to claim 1 test bed it is characterised in that institute
State soil compression system to include suppressing suspension (31), synchronization lifting mechanism (32), earth pack device (33) and guide runner b
(34)；Described suppression suspension (31) is connected with chassis frame (1) by guide runner chute mode, earth pack device (33)
Main shaft is arranged on the vertical rack of suppression suspension (31) by bearing, and synchronization lifting mechanism (32) is arranged on suppression suspension (31)
Horizontal stand on；
Described synchronization lifting mechanism (32) includes lifting motor (321), shaft coupling (322), diverter (323), connecting shaft
And spiral lift a (325) (324)；The output shaft of lifting motor (321) passes through shaft coupling (322) and diverter (323)
Input shaft connects；Diverter (323) is T-shaped diverter, and two horizontal output shafts of diverter (323) pass through shaft coupling respectively
(322) connect with one end of corresponding connecting shaft (324), the other end of connecting shaft (324) passes through shaft coupling (322) and corresponding spiral
Elevator a (325) input shaft connects；Spiral lift a (325) is self locking type worm gear-worm spiral lift, and its upper end suspends,
Lower end worm screw working end is connected with the horizontal stand of suppression suspension (31).
3. agricultural machinery rotary cultivating part dynamic load according to claim 1 test bed it is characterised in that institute
State land smoothing system (4) include clean-up scraper suspension (41), scraping plate lifting motor (42), clean-up scraper lowering or hoisting gear (47) and
Clean-up scraper with rake (46) (45), clean-up scraper suspension (41) is fixedly mounted in chassis frame (1), scraping plate lifting motor
(42) it is arranged on clean-up scraper suspension (41) with clean-up scraper lowering or hoisting gear (47)；
Described clean-up scraper lowering or hoisting gear (47) includes spiral lift b (471), connecting rod (472) and fixed seat (473), scraper plate
The output shaft of lifting motor (42) is connected with the input shaft of spiral lift b (471) by shaft coupling, this spiral lift
B (471) is worm and gear spiral lift；One end of described connecting rod (472) is hollow-core construction and offers female thread, separately
One end offers through hole；Fixed seat (473) is connected with clean-up scraper (45), is provided with U-shaped connecting seat, U-shaped in fixed seat (473)
The two ends of connecting seat offer through hole；One end of connecting rod (472) is by the worm screw of screw thread cooperation and spiral lift b (471)
Working end is fixedly connected, and the other end is fixed on the U-shaped connecting seat of fixed seat (473) by pin.
4. agricultural machinery rotary cultivating part dynamic load according to claim 1 test bed it is characterised in that institute
Stating traveling box (26) output shaft is double output shaft, and rotor (27) is two groups, and two groups of rotors (27) are symmetrically mounted on traveling box (26)
On the output shaft of both sides.
5. the agricultural machinery rotary cultivating part dynamic load according to claim 1 or 4 is test bed, and its feature exists
In described servo electric jar (22) is Zigzag type servo electric jar (22), the servomotor (221) of servo electric jar (22) and cylinder
Body (222) be arranged in parallel, and the output shaft of servomotor (221) passes through the biography of Timing Belt and synchronous pulley and servo electric jar (22)
Dynamic screw mandrel connects.
6. agricultural machinery rotary cultivating part dynamic load according to claim 3 test bed it is characterised in that institute
State land smoothing system (4) and also include contiguous block (43) and mobile guide pillar (44), the fixing peace in two ends of described mobile guide pillar (44)
It is contained on clean-up scraper suspension (41), the side of contiguous block (43) is mounted by means of bolts on clean-up scraper, opposite side passes through to lead
It is arranged on mobile guide pillar (44) above to bearing and can move axially along mobile guide pillar (44).
7. agricultural machinery rotary cultivating part dynamic load according to claim 6 test bed it is characterised in that institute
State clean-up scraper suspension (41) and from top to bottom include horizontally disposed first level support (411), the second horizontal stand (412) successively
With the 3rd horizontal stand (413), first level support (411), the second horizontal stand (412) and the 3rd horizontal stand (413)
Two ends are all fixedly connected with corresponding side supports (414)；The first level support (411) of clean-up scraper suspension (41) and chassis machine
Frame (1) connects；Described scraping plate lifting motor (42) and clean-up scraper lowering or hoisting gear (47) are fixedly mounted by mounting seat respectively
On the second horizontal stand (412)；Described mobile guide pillar (44) is arranged on the second horizontal stand (412) and the 3rd horizontal stand
(413) between and its two ends are fixedly mounted on the second horizontal stand (412) and the 3rd horizontal stand (413) along vertical.
8. agricultural machinery rotary cultivating part dynamic load according to claim 5 test bed it is characterised in that institute
The maximum functional stroke stating servo electric jar (22) is 300mm, and push rod operating rate is 200mm/s, servomotor (221) power
For 0.4kw, single cylinder bearing capacity is 80kg.
9. agricultural machinery rotary cultivating part dynamic load according to claim 2 test bed it is characterised in that institute
The maximum functional stroke stating synchronization lifting mechanism (32) is 230mm, and the worm screw operating rate of spiral lift a (325) is 50mm/
S, lift capability is 1000kg.
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