CN104568421A - 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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- CN104568421A CN104568421A CN201510040642.9A CN201510040642A CN104568421A CN 104568421 A CN104568421 A CN 104568421A CN 201510040642 A CN201510040642 A CN 201510040642A CN 104568421 A CN104568421 A CN 104568421A
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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, particularly a kind of agricultural machinery rotary cultivating part dynamic load is test bed.
Background technology
Soil cultivation parts are core components of agricultural machinery, and its soil cutting performance directly affects energy resource consumption and the farming usefulness of agricultural machinery.Soil cultivation parts are mainly subject to and the load effect of random variation complicated from topsoil soils, because resistance is excessive, often cause soil cultivation parts active time short, even occur the phenomenons such as bending, fracture.Therefore, real-time testing is carried out to the dynamic load of soil cultivation parts, study its mechanical characteristic in cultivating procedure and rule, by for soil cultivation parts design, to select and failure modes analysis provides important test data and technological means, and can be the design of its drag reduction consumption reduction valuable reference be provided.
Compared with field test, soil bin test have not by season and farming season restriction, can to need to carry out real-time recovery process, test repeatability to soil according to difference good and not by the advantage such as outside climatic and effect of natural conditions.The reported soil-engaging component test unit based on soil slot test stand at present, mainly have the following disadvantages: 1, soil slot test stand and chassis dimensions thereof are relatively large, the table system realizing difference in functionality (as rotary tillage, smooth, compacting etc.) is independently relatively; 2, most test unit Road test is single, and test data is confined to moment of torsion more; 3, most test unit is for single roll structure, is only limitted to the experimental studies such as single roller hilted broadsword or multitool; 4, most test unit is only limitted to special test, service part interchangeability and versatility poor.For this reason, be necessary to develop a kind of highly versatile, convenient, effectively can carry out the testing table of soil cultivation parts dynamic load test.
Summary of the invention
For above-mentioned deficiency of the prior art, fundamental purpose of the present invention is to provide a kind of highly versatile, can convenient, the testing table that effectively carries out the test of rotary cultivating part dynamic load.
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, comprise soil box and chassis, chassis comprises chassis frame, rotary tillage system, soil compression system, land smoothing system and running gear, described rotary tillage system is arranged on the front end of chassis frame, soil compression system is arranged on the rear end of chassis frame, land smoothing system is arranged in chassis frame and between rotary tillage system and soil compression system, running gear is arranged in chassis frame.
Described rotary tillage system comprises rotary tillage frame, tilling depth regulating device, rotary tillage drive motor, relief means, chain and sprocket driving device, one-level reverse drive gear, walking case, rotor and guide runner a, rotary tillage drive motor, tilling depth regulating device, relief means and one-level reverse drive gear are installed in rotary tillage frame, and rotary tillage frame is connected with chassis frame by guide runner-chute mode.
The power of described rotary tillage drive motor passes to one-level reverse drive gear through chain and sprocket driving device, after the commutation of one-level reverse drive gear, pass to walking case, and described rotor is arranged on walking case output shaft.
Described tilling depth regulating device comprises servo electric jar and the erecting frame for fixedly mounting servo electric jar, and the cylinder body of servo electric jar is fixedly mounted in chassis frame by erecting frame, and its push rod is connected with rotary tillage frame by bolt.
Described relief means comprises adjuster bar, regulating spring and auxiliary stand; Auxiliary stand is fixedly mounted in chassis frame, and auxiliary stand offers the through hole passed through for adjuster bar; The upper end suspension of adjuster bar, lower end is passed the through hole on auxiliary stand and is fixed in rotary tillage frame; Regulating spring is set on adjuster bar, and the lower end of regulating spring is fixedly connected in rotary tillage frame, and upper end is limited in auxiliary stand.
Described soil box is linear pattern, is provided with the track for road wheel walking, is provided with tooth bar above the outside of track in the both sides of soil box.
Described running gear comprises chassis drive motor, the first rotating shaft and the second rotating shaft, and the first rotating shaft is arranged on the front end of chassis frame, and the second rotating shaft is arranged on the rear end of chassis frame; Be separately installed with at the two ends of the first rotating shaft and the second rotating shaft the road wheel matched with soil box track, be positioned at the two ends of the first rotating shaft the driven wheel being provided with outside road wheel and being meshed with the tooth bar of soil box; Chassis drive motor power passes to the first rotating shaft through kinematic train, and ground-engaging wheel and driven wheel rotate.
Further, described soil compression system comprises suppression 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 arranged on by bearing on the vertical rack of suppression suspension, and synchronization lifting mechanism is arranged on the horizontal stand of suppression suspension.
Described synchronization lifting mechanism comprises lifting drive motor, shaft coupling, commutator, coupling shaft and spiral lift a; The output shaft of lifting drive motor is connected with commutator input shaft by shaft coupling; Commutator is T-shaped commutator, and two horizontal output shafts of commutator connect with one end of corresponding coupling shaft respectively by shaft coupling, and the other end of coupling shaft is connected with corresponding spiral lift a input shaft by shaft coupling; Spiral lift a is self locking type worm gear-worm spiral lift, and its upper end suspends, and worm screw working end, lower end is connected with the horizontal stand of suppression suspension.
Further, described land smoothing system comprises the clean-up scraper of clean-up scraper suspension, scraping plate lifting drive motor, clean-up scraper jacking gear and band rake, clean-up scraper suspension is fixedly mounted in chassis frame, and scraping plate lifting drive motor and clean-up scraper jacking gear are arranged on clean-up scraper suspension.
Described clean-up scraper jacking gear comprises spiral lift b, connecting link and holder, and the output shaft of scraping plate lifting drive motor is connected by the input shaft of shaft coupling with spiral lift b, and this spiral lift b is worm and gear spiral lift; One end of described connecting link is hollow-core construction and offers internal thread, and the other end offers through hole; Holder is connected with clean-up scraper, and holder is provided with U-shaped Connection Block, offers through hole at the two ends of U-shaped Connection Block; One end of connecting link is fixedly connected with the worm screw working end of spiral lift b by threaded engagement, and the other end is fixed on the U-shaped Connection Block of holder by pin or other web member.
Further, described walking case output shaft is double output shaft, and rotor is two groups, and two groups of rotor symmetries are arranged on the output shaft of walking case both sides.
Further, described servo electric jar is Zigzag type servo electric jar, and servomotor and the cylinder body of servo electric jar be arranged in parallel, and the output shaft of servomotor is connected with the drive lead screw of servo electric jar with synchronous pulley by Timing Belt.
Further, described land smoothing system also comprises contiguous block and mobile guide pillar, the two ends of described mobile guide pillar are fixedly mounted on clean-up scraper suspension, the side of contiguous block is mounted by means of bolts on clean-up scraper, and opposite side to be arranged on mobile guide pillar by guide bearing and can to move axially along mobile guide pillar.
Further, described clean-up scraper suspension comprises horizontally disposed first horizontal stand, the second horizontal stand and the 3rd horizontal stand from top to bottom successively, and the first horizontal stand, the second horizontal stand are all fixedly connected with corresponding side supports with the two ends of the 3rd horizontal stand; First horizontal stand of clean-up scraper suspension is connected with chassis frame; Described scraping plate lifting drive motor and clean-up scraper jacking gear are fixedly mounted on the second horizontal stand respectively by mount pad; Described mobile guide pillar is arranged between the second horizontal stand and the 3rd horizontal stand and its two ends and is fixedly mounted on the second horizontal stand and the 3rd horizontal stand along vertical.
Further, the maximum functional stroke of described servo electric jar is 300mm, and push rod operating rate is 200mm/s, and servomotor power is 0.4kw, and single cylinder load-bearing capacity is 80kg.
Further, the maximum functional stroke of described synchronization lifting mechanism is 230mm, and the worm screw operating rate of spiral lift a is 50mm/s, and lift capability is 1000kg.
Relative to prior art, the present invention has following beneficial effect:
1, this testing table reproduces rotary cultivating part operation based on soil bin simulation, and tests its dynamic load.Have not by season and farming season restriction, can to need to carry out real-time recovery process, test repeatability to soil according to difference good and not by the advantage such as outside climatic and effect of natural conditions.Can for the theoretical research of soil cultivation parts and Curve guide impeller provide Data support on the basis of saving ample resources.
2, this testing table both can realize the real-time testing of rotary cultivating part dynamic load, again can to the knife combination of difformity or varying number or different arrangement mode, and different tilling depth, different load when ploughing rotary cultivating part operation under the conditions such as speed carry out contrast test analysis.Test findings can be rotary cultivating part design, to select and failure modes analysis provides important test data and technological means.
3, the electric cylinder based on servomotor is adopted to regulate tilth, the rotary motion of servomotor is converted to rectilinear motion by screw mandrel, the precise rotation of servomotor is controlled simultaneously, accurately revolution controls, accurate torque controls to change precise speed control into, Accurate Position Control, accurately thrust control, thus realize the accurate control to tilth.This rotary tillage system breaching traditional soil bin test chassis adopts hydraulic system to realize the pattern of tilth adjustment, is conducive to shortening the response time, improves degree of regulation, and simplify system control strategy and flow process, save maintenance cost.
4, case output shaft of walking 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, adopting prototype cultivating member, prototype walking case, characterizing by testing the real behavior directly obtaining soil cultivation parts.
5, relief means is provided with.During use, the adjuster bar of relief means is through the through hole on the auxiliary stand be fixedly mounted in chassis frame, and making regulating spring between rotary tillage frame and auxiliary stand, the lower end of regulating spring is fixedly connected in rotary tillage frame, and upper end is limited in auxiliary stand.By the damping effect of regulating spring, the impact shock part directly acted in rotary tillage frame is transferred to chassis frame, to reduce impact shock during rotary tillage process, electric cylinder is protected.
6, this testing table carries out smooth process by land smoothing system to the soil after farming, by soil compression system, compaction treatment is carried out to top layer and deep soil again, to reach the soil compactibility of testing requirements, guarantee that soil-engaging component operation is for substantially identical soil environment all the time, thus make relevant test data have stronger repeatability and comparability.This system realizes the scraping depth adjustment within the scope of 0-60mm by adjustment clean-up scraper jacking gear, and the compacting depth adopting the synchronization lifting mechanism based on stepper motor to realize within the scope of 0-230mm regulates, this regulative mode breaches traditional soil slot test stand further and adopts hydraulic system to realize the pattern of depth adjustment, be conducive to shortening the response time, improve degree of regulation, and simplify system control strategy and flow process, cost-saving.
Accompanying drawing explanation
Fig. 1 is test platform structure schematic diagram of the present invention;
Fig. 2 is rotary tillage system architecture schematic diagram;
Fig. 3 is servo electric jar structural representation;
Fig. 4 is soil compression system architecture schematic diagram;
Fig. 5 is land smoothing system architecture schematic diagram;
Fig. 6 is land smoothing system another side structural representation;
Fig. 7 is synchronization lifting mechanism structural representation.
Wherein, 1 is chassis frame, 2 is rotary tillage system, 21 is rotary tillage frame, 22 is servo electric jar, 23 is relief means, 24 is rotary tillage drive motor, 25 is one-level reverse drive gear, 26 is walking case, 27 is rotor, 28 is guide runner a, 29 is spheric washer, 221 is servomotor, 222 is cylinder body, 223 is push rod, 231 is adjuster bar, 232 is regulating spring, 233 is auxiliary stand, 3 is soil compression system, 31 is suppression suspension, 32 is synchronization lifting mechanism, 33 is earth pack device, 34 guide runner b, 321 is lifting drive motor, 322 is shaft coupling, 323 is commutator, 324 is coupling shaft, 325 is spiral lift, 326 is flange, 4 is land smoothing system, 41 is clean-up scraper suspension, 42 is scraping plate lifting drive motor, 43 is contiguous block, 44 is mobile guide pillar, 45 is clean-up scraper, 46 is rake, 47 is clean-up scraper jacking gear, 48 is mount pad, 411 is the first horizontal stand, 412 is the second horizontal stand, 413 is the 3rd horizontal stand, 414 is side fixed support, 471 is spiral lift b, 472 is connecting link, 473 is holder, 5 is running gear, 51 is chassis drive motor, 52 is reductor, 53 is the first rotating shaft, 54 is the second rotating shaft, 55 is road wheel, 56 is driven wheel, 6 is soil box, 61 is track, 62 is tooth bar.
Embodiment
Below in conjunction with accompanying drawing and example, the present invention is further detailed explanation.
See Fig. 1: agricultural machinery rotary cultivating part dynamic load is test bed, comprise soil box 6 and chassis, chassis comprises 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 in chassis frame 1, and the distance between rotary tillage system 2 and chassis frame 1 front end is less than the distance between rotary tillage system 2 and chassis frame 1 rear end.Soil compression system 3 is arranged in chassis frame 1, and the distance between soil compression system 3 and chassis frame 1 front end is greater than the distance between soil compression system 3 and chassis frame 1 rear end.Land smoothing system 4 to be arranged in chassis frame 1 and between rotary tillage system 2 and soil compression system 3.Running gear 5 is arranged in chassis frame 1, and running gear 5 provides power for chassis moves and drives chassis to move on soil box 6.In the present invention, one end identical with test chassis working direction is chassis frame 1 front end, and the other end is chassis frame 1 rear end.
Soil box 6 is linear pattern, is provided with the track 61 of walking for road wheel 55, is provided with tooth bar 62, is provided with rack support device at a certain distance above the outside of track 61 in the both sides of soil box 6.
Running gear 5 comprises chassis drive motor 51, reductor 52, first rotating shaft 53, second rotating shaft 54, road wheel 55 and driven wheel 56.The output shaft of chassis drive motor 51 is connected with reductor 52 input shaft by belt.The output shaft of reductor 52 is provided with the second drive sprocket, the first rotating shaft 53 is provided with the second driven sprocket, the diameter of the second drive sprocket is less than the diameter of the second driven sprocket, and the second drive sprocket is connected by chain with the second driven sprocket.First rotating shaft 53 is driving shaft, and the second rotating shaft 54 is nonpowered axle, and the first rotating shaft 53 is arranged on the front end of chassis frame 1 by bearing, and the second rotating shaft 54 is arranged on the rear end of chassis frame 1 by bearing.All be provided with road wheel 55 at the two ends of the first rotating shaft 53 and the second rotating shaft 54, this road wheel 55 can move along the track 61 of soil box 6, and plays a supportive role to chassis.At the two ends of the first rotating shaft 53 and the outside being positioned at road wheel 55 is provided with driven wheel 56, the tooth bar 62 that this driven wheel 56 is corresponding with soil box 6 both sides engages.The power of chassis drive motor 51 passes to reductor 52 through belt gear, carry out second time by Chain conveyer after deceleration to slow down, pass to the first rotating shaft 53 after deceleration, the road wheel 55 of drive installation in the first rotating shaft 53 and driven wheel 56 rotate, thus drive chassis to move.
See Fig. 2 and Fig. 3: rotary tillage system 2 comprises rotary tillage frame 21, tilling depth regulating device, rotary tillage drive motor 24, relief means 23, chain and sprocket driving device, one-level reverse drive gear 25, walking case 26, rotor 27 and guide runner a28, rotary tillage drive motor 24, tilling depth regulating device, relief means 23 and one-level reverse drive gear 25 are installed in rotary tillage frame 21, and rotary tillage frame 21 is arranged in chassis frame 1.Rotary tillage drive motor 24 output shaft is provided with the first drive sprocket, and be provided with the first driven sprocket in one end of one-level reverse drive gear 25 input shaft, the first drive sprocket is connected by chain with the first driven sprocket.The other end of one-level reverse drive gear 25 input shaft is provided with the first umbrella tooth, and the upper end of one-level reverse drive gear 25 output shaft is provided with the second umbrella tooth, and the first umbrella tooth engages with the second umbrella tooth.The lower end of one-level reverse drive gear 25 output shaft is connected with walking case 26 input shaft.Walking case 26 output shaft is double output shaft, and rotor 27 is two groups, and two groups of rotor 27 symmetries are arranged on the output shaft of walking case 26 both sides.Rotary tillage drive motor 24 by chain and sprocket driving device by power transmission to one-level reverse drive gear 25, power transmission is given walking case 26 by gear drive by one-level reverse drive gear 25, walking case 26 drives the rotor 27 be arranged on walking case 26 output shaft to rotate, 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, adopting prototype cultivating member, prototype walking case 26, characterizing by testing the real behavior directly obtaining soil cultivation parts.
Tilling depth regulating device comprises servo electric jar 22, for fixedly mounting the erecting frame of servo electric jar 2.The cylinder body 222 of electric cylinder is fixedly mounted in test chassis frame 1 by erecting frame, and its push rod 223 is by spheric washer 29 and be bolted in rotary tillage frame 21, can improve the stressed of servo electric jar 22.Tilling depth regulating device adopts servomotor 221 to drive electric cylinder, realizes the adjustment of rotary tillage system 2 tilth.The maximum functional stroke of servo electric jar 22 is 300mm, and push rod 223 operating rate is 200mm/s, and servomotor 221 power is 0.4kw, and single cylinder load-bearing capacity is 80kg, and the tilth that can realize within the scope of 0-300mm regulates.
In the present embodiment, servo electric jar 22 adopts Zigzag type servo electric jar, servomotor 221 and the cylinder body 222 of electric cylinder be arranged in parallel, and the output shaft of servomotor 221 is connected with the drive lead screw of electric cylinder with synchronous pulley by Timing Belt, by the Power output of servomotor 221 to screw mandrel, drive screw mandrel rotates, its installation site is flexible, and install easily, setting is simple, easy to use, and there is higher controlling and control accuracy.
Relief means 23 comprises adjuster bar 231, regulating spring 232 and auxiliary stand auxiliary stand 233.Auxiliary stand 233 is fixedly mounted in chassis frame 1, and auxiliary stand auxiliary stand 233 offers the through hole passed through for adjuster bar 231.The upper end suspension of adjuster bar 231, lower end is passed the through hole on auxiliary stand support 233 and is fixedly connected in rotary tillage frame 21.Regulating spring 232 is set on adjuster bar 231, and the lower end of regulating spring 232 is fixedly connected in rotary tillage frame 21, and upper end is limited in auxiliary stand auxiliary stand 233.By the damping effect of regulating spring 232, the impact shock part directly acted 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 regulating device in rotary tillage system 2, the servo electric jar 22 pairs of tilths adopting servomotor 221 to drive regulate, the rotary motion of servomotor 221 is converted to rectilinear motion by screw mandrel, the precise rotation of servomotor 221 is controlled simultaneously, accurately revolution controls, accurate torque controls to change precise speed control into, Accurate Position Control, accurately thrust control, thus realize the accurate control to tilth.This rotary tillage system breaching traditional soil bin test chassis adopts hydraulic system to realize the pattern of tilth adjustment, is conducive to shortening the response time, improves degree of regulation, and simplify system control strategy and flow process, save maintenance cost.
See Fig. 4 and Fig. 7: soil compression system 3 comprise suppression suspension 31, synchronization lifting mechanism 32, earth pack device 33 and and 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 shelf structure, it vertical rack comprising horizontal stand and be arranged on horizontal stand two ends, the main shaft of earth pack device 33 is arranged on by bearing on the vertical rack of suppression suspension 31, and synchronization lifting mechanism 32 is arranged on the horizontal stand of suppression suspension 31.
Synchronization lifting mechanism 32 comprises lifting drive motor 321, shaft coupling 322, commutator 323, coupling shaft 324 and spiral lift a325.The shell of commutator 323 and spiral lift a325 is all fixed in chassis frame 1 by the fixed strip be set in parallel in chassis frame 1, spiral lift a325 is self locking type worm gear-worm spiral lift, and the worm screw working end of spiral lift a325 is connected with suppression suspension 31 through the space two fixed strips.Lifting drive motor 321 is stepper motor, and the output shaft of lifting drive motor 321 is connected with commutator 323 input shaft by shaft coupling 322.Commutator 323 is T-shaped commutator 323, and two horizontal output shafts of commutator 323 connect respectively by shaft coupling 322 one end with corresponding coupling shaft 324, and the other end of coupling shaft 324 is connected with corresponding spiral lift a325 input shaft by shaft coupling 322.The worm screw working end of spiral lift a325 is connected by the support of flange 326 with suppression suspension 31.Adopt the synchronization lifting mechanism 32 based on stepper motor, can realize the adjustment to compacting depth, range of adjustment is 0-230mm, and when compacting depth reaches setting value, spiral lift a325 has auto-lock function, to realize constant compacting depth compacting.
In the present embodiment, the maximum functional stroke of synchronization lifting mechanism 32 is 230mm, and the worm screw operating rate of spiral lift a325 is 50mm/s, and lift capability is 1000kg.The cylinder of earth pack device 33 is hollow-core construction, changes the quality of earth pack device 33, to realize the soil horizon compacting of different depth by filling the filling material such as sandy soil or iron filings in cylinder.Land presser cylinder external diameter is 400mm, and land presser cylinder internal diameter is 350mm, and land presser drum functions fabric width is 1300mm, and land presser cylinder material is casting pig, and land presser cylinder design quality is 300kg.
See Fig. 5 and Fig. 6: land smoothing system 4 comprises clean-up scraper suspension 41, scraping plate lifting drive motor 42, clean-up scraper jacking 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 comprises horizontally disposed first horizontal stand 411, second horizontal stand 412 from top to bottom successively and the 3rd horizontal stand 413, first horizontal stand 411, second horizontal stand 412 is all fixedly connected with the side fixed support 414 of corresponding end with the two ends of the 3rd horizontal stand 413.First horizontal stand 411 of clean-up scraper suspension 41 is fixedly connected with the suppression suspension 31 of soil compression system 3.Clean-up scraper 45 is installed with contiguous block 43, the side of this contiguous block 43 is mounted by means of bolts on clean-up scraper 45, opposite side passes mobile guide pillar 44 and is arranged on mobile guide pillar 44 by guide bearing, and this contiguous block 43 can move axially along mobile guide pillar 44.Mobile guide pillar 44 is arranged on the second horizontal stand 412 and the 3rd horizontal stand 413 that between the second horizontal stand 412 of clean-up scraper suspension 41 and the 3rd horizontal stand 413 and its two ends are fixedly mounted on clean-up scraper suspension 41 along vertical.In the present embodiment, contiguous block 43 is two pieces, and corresponding mobile guide pillar 44 is two.
Scraping plate lifting drive motor 42 and clean-up scraper jacking gear 47 are fixedly mounted on the second horizontal stand 412 respectively by mount pad 48.Clean-up scraper jacking gear 47 comprises spiral lift b471, connecting link 472 and holder 473, the output shaft of scraping plate lifting drive motor 42 is connected by the input shaft of shaft coupling with spiral lift b471, and this spiral lift b471 is worm and gear spiral lift.One end of connecting link 472 is hollow-core construction and offers internal thread, and the other end offers through hole; Holder 473 is fixedly mounted on clean-up scraper 45, and holder 473 is provided with U-shaped Connection Block, offers through hole at the two ends of U-shaped Connection Block; One end of connecting link 472 is fixedly connected with the worm screw working end of spiral lift b471 by threaded engagement, and the other end is fixed on the U-shaped Connection Block of holder 473 by pin or other web member.
Soil after the farming of land smoothing system 4 pairs of rotary tillage systems 2 carries out smooth process, compaction treatment is carried out again by soil compression system 3 pairs of top layers and deep soil, to reach the soil compactibility of testing requirements, guarantee that soil-engaging component operation is for substantially identical soil environment all the time, thus make relevant test data have stronger repeatability and comparability.This soil restoration device, by regulating clean-up scraper jacking gear, realizes the scraping depth adjustment within the scope of 0-60mm, and the compacting depth adopting the synchronization lifting mechanism 32 based on stepper motor to realize within the scope of 0-230mm regulates.This regulative mode breaches traditional soil slot test stand and adopts hydraulic system to realize the pattern of depth adjustment, is conducive to shortening the response time, improves degree of regulation, and simplify system control strategy and flow process, cost-saving.
This testing table reproduces rotary cultivating part operation based on soil bin simulation, and tests its dynamic load.Have not by season and farming season restriction, can to need to carry out real-time recovery process, test repeatability to soil according to difference good and not by the advantage such as outside climatic and effect of natural conditions.Can for the theoretical research of soil cultivation parts and Curve guide impeller provide Data support on the basis of saving ample resources.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. agricultural machinery rotary cultivating part dynamic load is test bed, it is characterized in that, comprise soil box (6) and chassis, chassis comprises chassis frame (1), rotary tillage system (2), soil compression system (3), land smoothing system (4) and running gear (5), described rotary tillage system (2) is arranged on the front end of chassis frame (1), soil compression system (3) is arranged on the rear end of chassis frame (1), land smoothing system (4) is arranged in chassis frame (1), and be positioned between rotary tillage system (2) and soil compression system (3), running gear (5) is arranged in chassis frame (1),
Described rotary tillage system (2) comprises rotary tillage frame (21), tilling depth regulating device, rotary tillage drive motor (24), relief means (23), chain and sprocket driving device, one-level reverse drive gear (25), walking case (26), rotor (27) and guide runner a (28), rotary tillage drive motor (24), tilling depth regulating device, relief means (23) and one-level reverse drive gear (25) are installed in rotary tillage frame (21), rotary tillage frame (21) is connected with chassis frame (1) by guide runner-chute mode,
The power of described rotary tillage drive motor (24) passes to one-level reverse drive gear (25) through chain and sprocket driving device, after one-level reverse drive gear (25) commutation, pass to walking case (26), described rotor (27) is arranged on walking case (26) output shaft;
Described tilling depth regulating device comprises servo electric jar (22) and the erecting frame for fixedly mounting servo electric jar (22), the cylinder body (222) of servo electric jar (22) is fixedly mounted in chassis frame (1) by erecting frame, and its push rod (223) is connected with rotary tillage frame (21) by bolt;
Described relief means (23) comprises adjuster bar (231), regulating spring (232) and auxiliary stand (233); Auxiliary stand (233) is fixedly mounted in chassis frame (1), and auxiliary stand (233) offers the through hole passed through for adjuster bar (231); The upper end suspension of adjuster bar (231), lower end is passed the through hole on auxiliary stand (233) and is fixed in rotary tillage frame (21); Regulating spring (232) is set on adjuster bar (231), and the lower end of regulating spring (232) is fixedly connected in rotary tillage frame (21), and upper end is limited in auxiliary stand (233);
Described soil box (6) is linear pattern, is provided with the track (61) of walking for road wheel (55), is provided with tooth bar (62) above the outside of track (61) in the both sides of soil box (6);
Described running gear (5) comprises chassis drive motor (51), the first rotating shaft (53) and the second rotating shaft (54), first rotating shaft (53) is arranged on the front end of chassis frame (1), and the second rotating shaft (54) is arranged on the rear end of chassis frame (1); Be separately installed with at the two ends of the first rotating shaft (53) and the second rotating shaft (54) road wheel (55) matched with soil box track (61), at the two ends of the first rotating shaft (53) and be positioned at road wheel (55) outside the driven wheel (56) be meshed with the tooth bar of soil box (62) is installed; Chassis drive motor (51) power passes to the first rotating shaft (53) through kinematic train, and ground-engaging wheel (55) and driven wheel (56) rotate.
2. agricultural machinery rotary cultivating part dynamic load according to claim 1 is test bed, it is characterized in that, described soil compression system comprises suppression 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, the main shaft of earth pack device (33) is arranged on by bearing on the vertical rack of suppression suspension (31), and synchronization lifting mechanism (32) is arranged on the horizontal stand of suppression suspension (31);
Described synchronization lifting mechanism (32) comprises lifting drive motor (321), shaft coupling (322), commutator (323), coupling shaft (324) and spiral lift a(325); The output shaft of lifting drive motor (321) is connected with commutator (323) input shaft by shaft coupling (322); Commutator (323) is T-shaped commutator, two horizontal output shafts of commutator (323) connect respectively by shaft coupling (322) one end with corresponding coupling shaft (324), and the other end of coupling shaft (324) is by shaft coupling (322) and corresponding spiral lift a(325) input shaft connects; Spiral lift a(325) be self locking type worm gear-worm spiral lift, its upper end suspends, and worm screw working end, lower end is connected with the horizontal stand of suppression suspension (31).
3. agricultural machinery rotary cultivating part dynamic load according to claim 1 is test bed, it is characterized in that, described land smoothing system (4) comprises the clean-up scraper (45) of clean-up scraper suspension (41), scraping plate lifting drive motor (42), clean-up scraper jacking gear (47) and band rake (46), clean-up scraper suspension (41) is fixedly mounted in chassis frame (1), and scraping plate lifting drive motor (42) and clean-up scraper jacking gear (47) are arranged on clean-up scraper suspension (41);
Described clean-up scraper jacking gear (47) comprises spiral lift b(471), connecting link (472) and holder (473), the output shaft of scraping plate lifting drive motor (42) is by shaft coupling and spiral lift b(471) input shaft be connected, this spiral lift b(471) be worm and gear spiral lift; One end of described connecting link (472) is hollow-core construction and offers internal thread, and the other end offers through hole; Holder (473) is connected with clean-up scraper (45), holder (473) is provided with U-shaped Connection Block, offers through hole at the two ends of U-shaped Connection Block; One end of connecting link (472) is by threaded engagement and spiral lift b(471) worm screw working end be fixedly connected with, the other end is fixed on the U-shaped Connection Block of holder (473) by pin or other web member.
4. agricultural machinery rotary cultivating part dynamic load according to claim 1 is test bed, it is characterized in that, described walking case (26) output shaft is double output shaft, and rotor (27) is two groups, and two groups of rotor (27) symmetries are arranged on the output shaft of walking case (26) both sides.
5. the agricultural machinery rotary cultivating part dynamic load according to claim 1 or 4 is test bed, it is characterized in that, described servo electric jar (22) is Zigzag type servo electric jar (22), servomotor (221) and the cylinder body (222) of servo electric jar (22) be arranged in parallel, and the output shaft of servomotor (221) is connected with the drive lead screw of synchronous pulley with servo electric jar (22) by Timing Belt.
6. agricultural machinery rotary cultivating part dynamic load according to claim 3 is test bed, it is characterized in that, described land smoothing system (4) also comprises contiguous block (43) and mobile guide pillar (44), the two ends of described mobile guide pillar (44) are fixedly mounted on clean-up scraper suspension (41), the side of contiguous block (43) is mounted by means of bolts on clean-up scraper, and opposite side is arranged on mobile guide pillar (44) by guide bearing and goes up and can move axially along mobile guide pillar (44).
7. the agricultural machinery rotary cultivating part dynamic load according to claim 3 or 6 is test bed, it is characterized in that, described clean-up scraper suspension (41) comprises horizontally disposed first horizontal stand (411), the second horizontal stand (412) and the 3rd horizontal stand (413) from top to bottom successively, and the first horizontal stand (411), the second horizontal stand (412) are all fixedly connected with corresponding side supports (414) with the two ends of the 3rd horizontal stand (413); First horizontal stand (411) of clean-up scraper suspension (41) is connected with chassis frame (1); Described scraping plate lifting drive motor (42) and clean-up scraper jacking gear (47) are fixedly mounted on the second horizontal stand (412) respectively by mount pad; Described mobile guide pillar (44) is arranged between the second horizontal stand (412) and the 3rd horizontal stand (413) and its two ends and is 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 is test bed, it is characterized in that, the maximum functional stroke of described servo electric jar (22) is 300mm, push rod operating rate is 200mm/s, servomotor (221) power is 0.4kw, and single cylinder load-bearing capacity is 80kg.
9. agricultural machinery rotary cultivating part dynamic load according to claim 2 is test bed, it is characterized in that, the maximum functional stroke of described synchronization lifting mechanism (32) is 230mm, spiral lift a(325) worm screw operating rate be 50mm/s, lift capability is 1000kg.
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