CN103181257B - A kind of Telescopic truss mechanism for farmland operation - Google Patents
A kind of Telescopic truss mechanism for farmland operation Download PDFInfo
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- CN103181257B CN103181257B CN201310091137.8A CN201310091137A CN103181257B CN 103181257 B CN103181257 B CN 103181257B CN 201310091137 A CN201310091137 A CN 201310091137A CN 103181257 B CN103181257 B CN 103181257B
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Abstract
The invention discloses a kind of Telescopic truss mechanism for farmland operation, comprise power set, transmission mechanism and multiple truss be slidably socketed successively from outside to inside.Meanwhile, except the truss of first order truss and innermost layer, the outer end of remaining each layer truss is equipped with stretches out pulley, and the inner is equipped with retraction pulley; Described stretch out pulley is equipped with stretch out steel wire rope, and the two ends of stretching out steel wire rope are individually fixed in and are provided with the inner that this stretches out the truss of adjacent two of the truss of pulley; Described retraction pulley is equipped with retraction steel wire rope, and the two ends of retraction steel wire rope are individually fixed in the outer end with two of the truss being provided with this retraction pulley adjacent truss.The present invention by adopting telescopic structure, thus effectively raises and sprays scope when single sprays operation, and steadily can reliably carry required farmland operation apparatus, operating efficiency is high simultaneously.
Description
Technical field
The present invention relates to agricultural machinery, be specifically related to a kind of Telescopic truss mechanism for farmland operation.
Background technology
Although China is large agricultural country, China's crop field management machinery equalization level is also lower, particularly sprays in (agricultural chemicals and foliage fertilizer etc.) and crop production of hybrid seeds supplementary pollination etc. in crop field.The current crop field management of China is with craft, semi-mechanized operation is main, belong to the labor-intensive mode of production, the labour dropped into is many, labour intensity is large, and farming method is extensive, agricultural resources effective rate of utilization is low, crop yield and difficult quality are protected, bring serious water and soil resources to pollute simultaneously, the ecosystem is unbalance, the problems such as quality of agricultural product declines and the health of people is on the hazard, the requirement of modern agricultural development cannot be adapted to, therefore high efficiency field management machinery is is urgently researched and developed, improve crop field management machinery equalization level.
In order to improve the availability of agricultural resources, effective reduction waste and excessively use the pollution brought, improve field operation efficiency, after 20 century 70s, the technology that sprays of some advanced persons is at home and abroad applied successively, mainly comprise targeting/spraying, wind send low volume, wind send remote spray, electrostatic spray, recovery circulation spraying, anti-float of mist droplet spraying (with preventing wafing shower nozzle and air curtain technology), aerial pesticide, spray boom spraying etc.But these technology all exist different limitations, some technology are still under test, have no large-scale marketing application; Though some technology are applied, be difficult to average out in the operating cost of dispenser, efficiency, accuracy, reliability and Regional suitability etc.Especially wet crop, such as paddy rice, line-spacing is little, and when after paddy growth to the envelope departure date, row ridge is unintelligible, and field management Work machine is difficult to enter field and carries out operation.
Existing air-assisted sprayer is installed on road vehicles usually, and the basis of hydraulic atomization adds high-speed centrifugal fan supply air system, to reach secondary-atomizing to droplet and remote spray, droplet extremely far can be formed mist curtain by near, penetration power is strong, and labour intensity is low, and operating efficiency is high.But this machinery exist droplet easily drift about, accurately control spraying effect poor, be subject to the limitations such as road conditions restriction, be generally used for tall and big crop, fruit tree etc. and spray operation, the more difficult adaptation field crops less to agriculture requirement line-spacing sprays the needs of operation; In addition, when needing the large field crop increasing range to spray operation, the demand of power of fan is sharply increased, and it is wayward to spray precision.
Existing high-efficiency wide long journey engine-driven atomiser adopts high-pressure fog and width long-range even spraying technology, the operating type of not going to the field can be adopted, operating efficiency is high, labour intensity is low, dispenser safety, range according to the difference of supporting aerodynamic power from 10m to 20m not etc., as spraying swath >20m, operating pressure requires to reach 3.5MPa, power is 37kW, when spraying swath requires to increase further, larger to the power demand of power, and in the more difficult control of mist type of far-end, the sensation that spray effect also has " beyond one's ability to help ".
Existing boom sprayer tool adopts tractor mounted usually, the high opening and closing that independently can control spray boom upper nozzle of operating efficiency, realizes accurately spraying, and operating efficiency is higher.But spray boom used is at present collapsible, folding controlling organization is complicated, and when farm work, due to being uneven of soil, farmland, during machine-walking, spray boom easily produces swing, is difficult to spray boom and ground are moved in parallel; Along with the increase of spray bar length, the more difficult control of balance of spray boom, easily contacting to earth in two ends, causes parts damages; And due to the defect of spray boom folding joint place connected mode, spray boom can produce vibration unavoidably with during power machine-walking, spray boom crossbeam and folding joint place is easily caused to damage; Because the load-carrying ability at folding joint place limits, adopt the fabric width of folding mode to be limited to, working width will be expanded further more difficult.
Summary of the invention
The deficiency that the present invention exists to overcome above prior art, provides a kind of structure simple, reliable operation, improves and sprays precision, increases the Telescopic truss mechanism for farmland operation that single sprays working width.
Object of the present invention is realized by following technical scheme: this is used for the Telescopic truss mechanism of farmland operation, comprise power set, transmission mechanism and multiple truss be slidably socketed successively from outside to inside, wherein, being positioned at outermost truss is first order truss, and secondary outer field truss is second level truss;
Described power set are installed on first order truss, and described power set are connected with second level truss by transmission mechanism; Except the truss of first order truss and innermost layer, the outer end of remaining each layer truss is equipped with stretches out pulley, and the inner is equipped with retraction pulley; Described stretch out pulley is equipped with stretch out steel wire rope, and the two ends of stretching out steel wire rope are individually fixed in and are provided with the inner that this stretches out the truss of adjacent two of the truss of pulley; Described retraction pulley is equipped with retraction steel wire rope, and the two ends of retraction steel wire rope are individually fixed in the outer end with two of the truss being provided with this retraction pulley adjacent truss.
Described transmission mechanism comprises gear and tooth bar, and described gear is installed on the power take-off of power set, and described tooth bar is fixed on second level truss, and and gears meshing.
The quantity of described truss is 4, is followed successively by first order truss, second level truss, third level truss and fourth stage truss from each truss outside to inside; The outer end of described second level truss and third level truss is respectively equipped with first and stretches out pulley and second and stretch out pulley, and the inner is respectively equipped with the first retraction pulley and the second retraction pulley;
The inner of first order truss and third level truss is individually fixed in around the first two ends of stretching out steel wire rope of stretching out on pulley; The inner of second level truss and fourth stage truss is individually fixed in around the second two ends of stretching out steel wire rope of stretching out on pulley;
Two ends around the retraction steel wire rope on the first retraction pulley are individually fixed in the outer end of first order truss and third level truss; Two ends around the retraction steel wire rope on the second retraction pulley are individually fixed in the outer end of second level truss and fourth stage truss.Due to steel wire rope is can not from principal elongation, and therefore for same steel wire rope, when the length of the steel wire rope of pulley side, the length of the steel wire rope of the opposite side of this pulley must shorten.As when second level truss stretches out the inner chamber of first order truss, first length of stretching out steel wire rope of stretching out on the upside of pulley can be elongated gradually, then the first length of stretching out steel wire rope of stretching out on the downside of pulley must shorten gradually, thus pull third level truss, make third level truss stretch out from the inner chamber of second level truss.
The first installing space is provided with between outside below the truss of the described second level and the inner side below first order truss; The second installing space is provided with between outside below described third level truss and the inner side below the truss of the second level.Described first installing space and the second installing space are all for the instrument for spraying operation such as mounting spray head, sebific duct and switch valve.And the downside of first order truss can be used for installing these and sprays power tool, also can spray power tool for installing equally in the inner chamber of fourth stage truss, thus improve the scope that single sprays operation.
For reducing the wearing and tearing of each truss and ensureing to be provided with sliding aiding elements between truss described in adjacent two-stage by the relative sliding of adjacent two-stage truss, first order truss, second level truss, third level truss and fourth stage truss are slidably socketed by sliding aiding elements successively.
Described first order truss, second level truss, third level truss and fourth stage truss be in rectangle truss, triangular truss, parallel chord truss and circular arc truss any one.The preferred rectangle truss of the present invention.
For alleviate each truss retract each inner chamber time impulsive force, the inner of described first order truss and second level truss is equipped with buffer; Described buffer is buffering adhesive or buffer spring.
The described Telescopic truss mechanism for farmland operation also comprises limit sensors, and described limit sensors is installed on first order truss.Utilize limit sensors to detect the movement of second level truss, thus effectively control the extension elongation of truss at different levels, the length avoiding truss at different levels to stretch out is long.
Described power set comprise hydraulic motor, reversal valve, hydraulic pump, flow speed control valve and fuel tank, described hydraulic motor is connected with hydraulic pump, flow speed control valve respectively by reversal valve, described hydraulic pump is all connected with fuel tank with flow speed control valve, and described gear is installed on the power take-off of hydraulic motor.Described reversal valve is three position four-way directional control valve, by controlling the position of three position four-way directional control valve, thus reaches turning to of the power take-off of hydraulic control motor.Described power set also can comprise air motor and the pneumatic circuit supporting with air motor, thus equally can the rotating of control gear, realize the flexible of truss at different levels with activation.
Operation principle of the present invention is as follows: primer fluid pressure motor, and when the power take-off of hydraulic motor rotates forward, the gear being installed on power take-off rotates forward; Due to the cooperation of wheel and rack, then second level truss stretches out from the inner chamber of first order truss, and meanwhile, because first stretches out pulley and first and stretch out the effect of stretching out steel wire rope on pulley, third level truss stretches out from the inner chamber of second level truss; Because second stretches out pulley and second and stretch out the effect of stretching out steel wire rope on pulley, fourth stage truss stretches out from the inner chamber of third level truss; When the power take-off reversion of hydraulic motor, due to the cooperation of wheel and rack, the inner chamber of second level truss retraction first order truss; Meanwhile, due to the effect of the retraction steel wire rope on the first retraction pulley and the first retraction pulley, the inner chamber of third level truss retraction second level truss; Due to the effect of the retraction steel wire rope on the second retraction pulley and the second retraction pulley, the inner chamber of fourth stage truss retraction third level truss.
The present invention has following advantage relative to prior art:
1, the Telescopic truss mechanism for farmland operation of the present invention have employed telescopic structure, thus avoids folding joint place in common accordion structure stressed large, easily looseness, the problem such as vibration is large, folding joint place is fragile.
2, the level truss junction load-carrying ability of the Telescopic truss mechanism for farmland operation of the present invention is strong, and single operation fabric width is more easily expanded, and can reduce the number of times that tractor enters field operation, reduces the loss of pressure seedling; And more stable and stronger, steadily reliably can carry required farmland operation apparatus (shower nozzle, high pressure nozzle etc.), operating efficiency is high and accurate rate is high, improves utilization of agricultural resources utilization rate; The present invention simultaneously also can in supplementary pollination.
3, step-less adjustment can be realized as required when the Telescopic truss mechanism for farmland operation of the present invention is in operation in length, have that sole mass is light, single operation fabric width large simultaneously, be convenient to flexible manipulation, volume of retracting is little, be convenient to deposit the advantages such as transport.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Telescopic truss mechanism for farmland operation of the present invention.
Fig. 2 is the right view of the Telescopic truss mechanism for farmland operation of the present invention.
Fig. 3 is the front view of the Telescopic truss mechanism for farmland operation of the present invention.
Fig. 4 is the hydraulic circuit diagram of power set of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Basis is as shown in Figure 1 to Figure 3 used for the Telescopic truss mechanism of farmland operation, it is characterized in that: comprise power set, transmission mechanism and multiple truss be slidably socketed successively from outside to inside, wherein, being positioned at outermost truss is first order truss 1, and secondary outer field truss is second level truss 2;
Described power set are installed on first order truss 1, and described power set are connected with second level truss 2 by transmission mechanism; Except the truss of first order truss 1 and innermost layer, the outer end of remaining each layer truss is equipped with stretches out pulley, and the inner is equipped with retraction pulley; Described stretch out pulley is equipped with stretch out steel wire rope 14, and the two ends of stretching out steel wire rope 14 are individually fixed in and are provided with the inner that this stretches out the truss of adjacent two of the truss of pulley; Described retraction pulley is equipped with retraction steel wire rope 15, and the two ends of retraction steel wire rope 15 are individually fixed in the outer end with two of the truss being provided with this retraction pulley adjacent truss.Described first order truss 1, second level truss 2, third level truss 3 and fourth stage truss 4 be in rectangle truss, triangular truss, parallel chord truss and circular arc truss any one.The preferred rectangle truss of the present embodiment.
Described transmission mechanism comprises gear 6 and tooth bar 5, and described gear 6 is installed on the power take-off of power set, and described tooth bar 5 is fixed on second level truss 2, and engages with gear 6.
The quantity of described truss is 4, is followed successively by first order truss 1, second level truss 2, third level truss 3 and fourth stage truss 4 from each truss outside to inside; The outer end of described second level truss 2 and third level truss 3 is respectively equipped with first and stretches out pulley 11 and second and stretch out pulley 10, and the inner is respectively equipped with the first retraction pulley 12 and the second retraction pulley 13;
The inner of first order truss 1 and third level truss 2 is individually fixed in around the first two ends of stretching out steel wire rope 14 of stretching out on pulley 11; The inner of second level truss 2 and fourth stage truss 4 is individually fixed in around the second two ends of stretching out steel wire rope 14 of stretching out on pulley 10;
Two ends around the retraction steel wire rope 15 on the first retraction pulley 12 are individually fixed in the outer end of first order truss 1 and third level truss 3; Two ends around the retraction steel wire rope 15 on the second retraction pulley 13 are individually fixed in the outer end of second level truss 2 and fourth stage truss 4.Due to steel wire rope is can not from principal elongation, and therefore for same steel wire rope, when the length of the steel wire rope of pulley side, the length of the steel wire rope of the opposite side of this pulley must shorten.As when second level truss 2 stretches out the inner chamber of first order truss 1, first length of stretching out steel wire rope 14 of stretching out on the upside of pulley 11 can be elongated gradually, then the first length of stretching out steel wire rope 14 of stretching out on the downside of pulley 11 must shorten gradually, thus pull third level truss 3, make third level truss 3 stretch out from the inner chamber of second level truss 2.
Outside below described second level truss 2 and be provided with the first installing space 16 between the inner side below first order truss 1; Outside below described third level truss 3 and be provided with the second installing space 17 between the inner side below second level truss 2.Described first installing space 16 and the second installing space 17 are all for the instrument for spraying operation such as mounting spray head, sebific duct and switch valve.And the downside of first order truss 1 can be used for installing these and sprays power tool, also can spray power tool for installing equally in the inner chamber of fourth stage truss 4, thus improve the scope that single sprays operation.As shown in Figure 3, the cross bar of the below in second level truss 2 and the lower surface of montant have certain distance, thus the cross bar below the montant of cross bar below second level truss 2, second level truss 2 and first order truss 1 forms the first installing space 16; The formation basic theory of the second installing space 17 and the identical of the first installing space 16.
For reducing the wearing and tearing of each truss and ensureing to be provided with sliding aiding elements 18 between truss described in adjacent two-stage by the relative sliding of adjacent two-stage truss, first order truss 1, second level truss 2, third level truss 3 and fourth stage truss 4 are slidably socketed by sliding aiding elements 18 successively.Described sliding aiding elements 18 is the material that other attributes such as nylon sheet or rubber are close, preferred nylon sheet in the present embodiment.This nylon sheet is L-shaped, and is individually fixed in four angles of the inner chamber of first order truss 1, second level truss 2 and third level truss 3, thus avoids the truss of adjacent two-stage directly to contact.
For alleviate each truss retract each inner chamber time impulsive force, the inner of described first order truss 1, second level truss 2 and third level truss 3 is equipped with buffer 9; Described buffer 9 is buffering adhesive or buffer spring, and the present embodiment is preferably buffering adhesive.
The described Telescopic truss mechanism for farmland operation also comprises limit sensors 8, and described limit sensors 8 is installed on first order truss 1.Preferred as one, described limit sensors 8 is installed on the outer end of first order truss 1.Utilize limit sensors 8 to detect the movement of second level truss 2, thus effectively control the extension elongation of truss at different levels, the length avoiding truss at different levels to stretch out is long.
As shown in Figure 4, described power set comprise hydraulic motor 7, reversal valve 19, hydraulic pump 20, flow speed control valve 21 and fuel tank 22, described hydraulic motor 7 is connected with hydraulic pump 20, flow speed control valve 21 respectively by reversal valve 19, described hydraulic pump 20 is all connected with fuel tank 22 with flow speed control valve 21, and described gear 6 is installed on hydraulic motor 7 power take-off.Described reversal valve 19 is three position four-way directional control valve, by controlling the position of three position four-way directional control valve, thus reaches turning to of the power take-off of hydraulic control motor 7.
Operation principle of the present invention is as follows: primer fluid pressure motor 7, and when the power take-off of hydraulic motor 7 rotates forward, the gear 6 being installed on power take-off rotates forward; Due to coordinating of gear 6 and tooth bar 5, then second level truss 2 stretches out from the inner chamber of first order truss 1, meanwhile, because first stretches out pulley 11 and first and stretch out the effect of stretching out steel wire rope 14 on pulley 11, third level truss 3 stretches out from the inner chamber of second level truss 2; Because second stretches out the effect of stretching out steel wire rope 14 that pulley 10 and second stretches out on pulley 10, fourth stage truss 4 stretches out from the inner chamber of third level truss 3; When the power take-off reversion of hydraulic motor 7, due to coordinating of gear 6 and tooth bar 5, second level truss 2 is retracted the inner chamber of first order truss 1; Meanwhile, due to the effect of the retraction steel wire rope 15 on the first retraction pulley 12 and the first retraction pulley 12, third level truss 3 is retracted the inner chamber of second level truss 2; Due to the effect of the retraction steel wire rope 15 on the second retraction pulley 13 and the second retraction pulley 13, fourth stage truss 4 is retracted the inner chamber of third level truss 3.
Above-mentioned embodiment is the preferred embodiments of the present invention, can not limit the present invention, and any of other does not deviate from technical scheme of the present invention and the substitute mode of the change made or other equivalence, is included within protection scope of the present invention.
Claims (8)
1. the Telescopic truss mechanism for farmland operation, it is characterized in that: comprise power set, transmission mechanism and multiple truss be slidably socketed successively from outside to inside, wherein, being positioned at outermost truss is first order truss, and secondary outer field truss is second level truss;
Described power set are installed on first order truss, and described power set are connected with second level truss by transmission mechanism; Except the truss of first order truss and innermost layer, the outer end of remaining each layer truss is equipped with stretches out pulley, and the inner is equipped with retraction pulley; Described stretch out pulley is equipped with stretch out steel wire rope, and the two ends of stretching out steel wire rope are individually fixed in and are provided with the inner that this stretches out the truss of adjacent two of the truss of pulley; Described retraction pulley is equipped with retraction steel wire rope, and the two ends of retraction steel wire rope are individually fixed in the outer end with two of the truss being provided with this retraction pulley adjacent truss;
The quantity of described truss is 4, is followed successively by first order truss, second level truss, third level truss and fourth stage truss from each truss outside to inside; The outer end of described second level truss and third level truss is respectively equipped with first and stretches out pulley and second and stretch out pulley, and the inner is respectively equipped with the first retraction pulley and the second retraction pulley;
The inner of first order truss and third level truss is individually fixed in around the first two ends of stretching out steel wire rope of stretching out on pulley; The inner of second level truss and fourth stage truss is individually fixed in around the second two ends of stretching out steel wire rope of stretching out on pulley;
Two ends around the retraction steel wire rope on the first retraction pulley are individually fixed in the outer end of first order truss and third level truss; Two ends around the retraction steel wire rope on the second retraction pulley are individually fixed in the outer end of second level truss and fourth stage truss.
2. a kind of Telescopic truss mechanism for farmland operation according to claim 1, it is characterized in that: described transmission mechanism comprises gear and tooth bar, described gear is installed on the power take-off of power set, and described tooth bar is fixed on second level truss, and and gears meshing.
3. a kind of Telescopic truss mechanism for farmland operation according to claim 1, is characterized in that: be provided with the first installing space between the outside below the truss of the described second level and the inner side below first order truss; The second installing space is provided with between outside below described third level truss and the inner side below the truss of the second level.
4. a kind of Telescopic truss mechanism for farmland operation according to claim 1, it is characterized in that: be provided with sliding aiding elements between truss described in adjacent two-stage, first order truss, second level truss, third level truss and fourth stage truss are slidably socketed by sliding aiding elements successively.
5. a kind of Telescopic truss mechanism for farmland operation according to claim 1, is characterized in that: described first order truss, second level truss, third level truss and fourth stage truss be in rectangle truss, triangular truss, parallel chord truss and circular arc truss any one.
6. a kind of Telescopic truss mechanism for farmland operation according to claim 1, is characterized in that: the inner of described first order truss and second level truss is equipped with buffer; Described buffer is buffering adhesive or buffer spring.
7. a kind of Telescopic truss mechanism for farmland operation according to claim 1, it is characterized in that: also comprise limit sensors, described limit sensors is installed on first order truss.
8. a kind of Telescopic truss mechanism for farmland operation according to claim 2, it is characterized in that: described power set comprise hydraulic motor, reversal valve, hydraulic pump, flow speed control valve and fuel tank, described hydraulic motor is connected with hydraulic pump, flow speed control valve respectively by reversal valve, described hydraulic pump is all connected with fuel tank with flow speed control valve, and described gear is installed on the power take-off of hydraulic motor or air motor.
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| CN201310091137.8A CN103181257B (en) | 2013-03-20 | 2013-03-20 | A kind of Telescopic truss mechanism for farmland operation |
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| CN201310091137.8A CN103181257B (en) | 2013-03-20 | 2013-03-20 | A kind of Telescopic truss mechanism for farmland operation |
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| CN103181257B true CN103181257B (en) | 2015-11-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104115582B (en) * | 2014-07-22 | 2016-01-13 | 湖南省烟草公司长沙市公司浏阳市分公司 | A kind of cantilevered flue-cured tobacco tillage equipment |
| CN104538897A (en) * | 2014-12-25 | 2015-04-22 | 徐州海伦哲专用车辆股份有限公司 | Bridge type stringing trolley telescopic workbench |
| CN107223655A (en) * | 2017-07-01 | 2017-10-03 | 围场满族蒙古族自治县援农机械制造有限公司 | Telescopic spraying machine |
| CN109465807A (en) * | 2018-10-19 | 2019-03-15 | 上海应用技术大学 | A kind of longitudinal axis structure and robot of truss robot |
| CN109197844A (en) * | 2018-11-12 | 2019-01-15 | 南京林业大学 | A kind of foldable self-balancing damping spray boom |
| CN111411783B (en) * | 2020-03-24 | 2021-08-24 | 广东博智林机器人有限公司 | Multi-section telescopic composite truss and elevator shaft type straight arm construction equipment with same |
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| CN2307772Y (en) * | 1997-07-05 | 1999-02-17 | 费海燕 | Linkage expansion cantilever of crane |
| CN201272660Y (en) * | 2008-07-10 | 2009-07-15 | 彭洪 | Tower frame of floor suspension-paving machine |
| BRPI0802760A2 (en) * | 2008-08-29 | 2010-05-18 | Jacto Maquinas Agricolas | improvement in agricultural application structures |
| CN202535969U (en) * | 2012-01-14 | 2012-11-21 | 河南科技大学 | Remote control type pesticide spraying device used in greenhouse |
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