CN103959966B - A kind of oval not exclusively not rounded and Knucle-gear planetary system vegetable seedling picking mechanism - Google Patents
A kind of oval not exclusively not rounded and Knucle-gear planetary system vegetable seedling picking mechanism Download PDFInfo
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- CN103959966B CN103959966B CN201410104229.XA CN201410104229A CN103959966B CN 103959966 B CN103959966 B CN 103959966B CN 201410104229 A CN201410104229 A CN 201410104229A CN 103959966 B CN103959966 B CN 103959966B
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- 235000013311 vegetables Nutrition 0.000 title claims abstract description 11
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Abstract
The invention discloses a kind of oval not exclusively not rounded and Knucle-gear planetary system vegetable seedling picking mechanism. Existing seedling picking mechanism adopts the gear ratio that Locking arc reaches seedling pick-up trajectory to change on a large scale, and transmission is impacted big. The central shaft of the present invention and planet carrier are fixed, and the incomplete non-circular gear in center and frame are fixed, and the incomplete Knucle-gear in center and the incomplete non-circular gear in center are fixed, and equal empty set is on center shaft; First middle elliptic gear and the first jackshaft are connected by spline, and in the middle of first, not exclusively Knucle-gear and the first middle elliptic gear are fixed; Second middle elliptic gear and the second jackshaft are connected by spline, and in the middle of second, not exclusively Knucle-gear and the second middle elliptic gear are fixed; First planet elliptic gear is connected by spline with first planet axle, and the second planet elliptic gear and the second planet axis are connected by spline; One end of first planet axle and the second planet axis is all stretched out the outer housing with a seedling claw of planet carrier and is fixed. Stable drive of the present invention, impact little.
Description
Technical field
The invention belongs to agricultural mechanical field, relate to a kind of vegetable seedling picking mechanism, be specifically related to a kind of oval not exclusively not rounded and Knucle-gear planetary system vegetable seedling picking mechanism.
Background technology
Transplant the comprehensive benefit with the compensating action making crop growth ahead of time with to weather, it is possible to making full use of sunlight-heat reaources, its economic and social profit is all considerable. Paddy field, nonirrigated farmland potted-seedling transplanting operation need exploitation transplant seedling picking mechanism.
Transmission Mechanism of Planetary Gear System is existing application in the seedling picking mechanism of transplanting machine, the work process of Seedling backhaul is pushed away in order to complete seedling taking, transplant arm cusp and to complete required movement locus, existing planet circular system seedling picking mechanism all have employed Locking arc mechanism change on a large scale with the gear ratio required for reaching seedling pick-up trajectory, the gear ratio of Locking arc transmission is equivalent to infinity, so in Locking arc transmission and gear-driven transition stage, huge sudden change due to gear ratio, the transmission of mechanism has very big impact, very unstable, it is unfavorable for improving seedling taking speed.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of oval not exclusively not rounded and Knucle-gear planetary system vegetable seedling picking mechanism, this mechanism can meet the special track requirements needed for pot seedling transplanter, and stable drive, impact are little.
The present invention includes central shaft, planet carrier, the incomplete non-circular gear in center, the incomplete Knucle-gear in center, the first jackshaft, the second jackshaft, the first middle elliptic gear, the first middle not exclusively Knucle-gear, the second middle elliptic gear, the second middle not exclusively Knucle-gear, first planet axle, the second planet axis, first planet elliptic gear, the second planet elliptic gear and seedling claw. One end of described central shaft is connected with power set, and the other end and planet carrier are fixed; The incomplete non-circular gear in described center and frame are fixed, and the incomplete Knucle-gear in center and the incomplete non-circular gear in center are fixed, and the gear teeth of the gear teeth of the incomplete Knucle-gear in center and the incomplete non-circular gear in center are arranged on not homonymy; The incomplete non-circular gear in described center and the center equal empty set of incomplete Knucle-gear is on center shaft; The first described jackshaft and the second jackshaft are symmetricly set on central shaft both sides, and are all connected by bearing with planet carrier; The first described middle elliptic gear and the first jackshaft are connected by spline, and in the middle of first, incomplete Knucle-gear empty set is on the first jackshaft, and fixes with the first middle elliptic gear; The second described middle elliptic gear and the second jackshaft are connected by spline, and in the middle of second, incomplete Knucle-gear empty set is on the second jackshaft, and fixes with the second middle elliptic gear; Described first planet axle and the second planet axis are symmetricly set on planet carrier two ends, and are all connected by bearing with planet carrier; Described first planet elliptic gear is connected by spline with first planet axle, and the second planet elliptic gear and the second planet axis are connected by spline; One end of first planet axle and the second planet axis is all stretched out the outer housing with a seedling claw of planet carrier and is fixed. The both sides of described first middle elliptic gear are connected by gear pair with the incomplete non-circular gear in center and first planet elliptic gear respectively; The both sides of the second middle elliptic gear are connected by gear pair with the incomplete non-circular gear in center and the second planet elliptic gear respectively; In the middle of the incomplete Knucle-gear in described center and first, not exclusively Knucle-gear or the second middle not exclusively Knucle-gear are connected by gear pair.
The pitch curve parameter of described the first middle elliptic gear, the second middle elliptic gear, first planet elliptic gear and the second planet elliptic gear is identical;In the middle of described first, not exclusively the pitch curve parameter of Knucle-gear and the second middle not exclusively Knucle-gear is identical.
Described planet carrier rotates, and the seedling needle point point of seedling claw forms seedling pick-up trajectory; The head of described seedling pick-up trajectory is provided with latch closure, is seedling taking section from head cusp to pot seedling disk top, and the linearity of seedling taking section is 1mm/20mm～1mm/10mm.
Beneficial effects of the present invention:
1, the variable speed transmission of the present invention, makes the seedling needle point point of seedling claw form seedling pick-up trajectory, meets the agriculture requirement of potted-seedling transplanting;
2, the present invention adopts incomplete knuckle-tooth wheel set to replace the Locking arc mechanism in existing mechanism, not only rotate, at planet carrier, the whole gear ratio change procedure achieving the incomplete Knucle-gear in center and the incomplete Knucle-gear in centre in small angle range, it is simultaneously achieved in the whole cycle that planet carrier rotates, the change that planetary system first order gear pair gear ratio is mild, make the incomplete Knucle-gear in center with the incomplete Knucle-gear in centre from starting to be engaged to the whole process separated, sudden change less on middle elliptic gear and planet elliptic gear rotating speed, reduce transmission in existing mechanism unstable, impact big shortcoming,
3, present configuration is simple, volume is little, lightweight, vibrate little, low cost of manufacture;
4, the present invention adopts the arrangement of two seedling claws, and planet carrier rotates once, seedling taking operation twice, and work efficiency is high, adapts to transplanter paddy field under any rotating speed and nonirrigated farmland and transplants operation.
Accompanying drawing explanation
Fig. 1 is the overall structure sectional view of the present invention;
Fig. 2 is the operation principle schematic diagram of the present invention;
Fig. 3 is the structural representation of planetary system in the present invention;
Fig. 4-1 is the internal structure sectional view of seedling claw in the present invention;
Fig. 4-2 is the overall structure schematic diagram of seedling claw in the present invention;
Fig. 5-1 is that in the present invention, planet carrier corner is 0～280 incomplete non-circular gear in °Shi center and the transmission ratio curve figure of the first middle elliptic gear engagement;
Fig. 5-2 is that in the present invention, planet carrier corner is the transmission ratio curve figure of not exclusively Knucle-gear engagement in the middle of 280 °～360 incomplete Knucle-gears in °Shi center and first.
In figure: 1, central shaft, 2, planet carrier, 3, the incomplete non-circular gear in center, 4, the incomplete Knucle-gear in center, 5, first jackshaft, 6, second jackshaft, 7, first middle elliptic gear, 8, incomplete Knucle-gear in the middle of first, 9, second middle elliptic gear, 10, incomplete Knucle-gear in the middle of second, 11, first planet axle, 12, second planet axis, 13, first planet elliptic gear, 14, second planet elliptic gear, 15, seedling claw, 15-1, push away Seedling cam, 15-2, push away Seedling shift fork, 15-3, seedling-pushing rod, 15-4, seedling pin, 15-5, spring, 15-6, push away Seedling pawl, 16, seedling pick-up trajectory, 17, pot seedling.
Detailed description of the invention
As shown in Figure 1,2 and 3, a kind of oval incomplete not rounded and Knucle-gear planetary system vegetable seedling picking mechanism include incomplete Knucle-gear 10, first planet axle the 11, second planet axis 12, first planet elliptic gear the 13, second planet elliptic gear 14 and seedling claw 15 in the middle of central shaft 1, planet carrier 2, the incomplete non-circular gear in center 3, middle not exclusively Knucle-gear the 8, the second middle elliptic gear 9, second of the incomplete Knucle-gear in center the 4, first jackshaft the 5, second jackshaft the 6, first middle elliptic gear 7, first. One end of central shaft 1 is connected with power set, and the other end is fixed with planet carrier 2;The incomplete non-circular gear 3 in center is fixed with frame, and the incomplete Knucle-gear in center 4 is fixed with the incomplete non-circular gear 3 in center, and the gear teeth of the gear teeth of the incomplete Knucle-gear in center and the incomplete non-circular gear in center are arranged on not homonymy; The incomplete non-circular gear in center 3 and the center equal empty set of incomplete Knucle-gear 4 is on center shaft; First jackshaft 5 and the second jackshaft 6 are symmetricly set on central shaft both sides, and are all connected by bearing with planet carrier 2; First middle elliptic gear 7 is connected by spline with the first jackshaft 5, and in the middle of first, incomplete Knucle-gear 8 empty set is on the first jackshaft, and fixes with the first middle elliptic gear 7; Second middle elliptic gear 9 is connected by spline with the second jackshaft 6, and in the middle of second, incomplete Knucle-gear 10 empty set is on the second jackshaft, and fixes with the second middle elliptic gear 9; First planet axle 11 and the second planet axis 12 are symmetricly set on planet carrier 2 two ends, and are all connected by bearing with planet carrier; First planet elliptic gear 13 is connected by spline with first planet axle 11, and the second planet elliptic gear 14 is connected by spline with the second planet axis 12; One end of first planet axle 11 and the second planet axis 12 is all stretched out the outer housing with a seedling claw 15 of planet carrier 2 and is fixed. The both sides of the first middle elliptic gear 7 are connected by gear pair with the incomplete non-circular gear 3 in center and first planet elliptic gear 13 respectively; The both sides of the second middle elliptic gear 9 are connected by gear pair with the incomplete non-circular gear 3 in center and the second planet elliptic gear 14 respectively; When the incomplete non-circular gear in center 3 starts to engage with the first middle elliptic gear 7, the incomplete Knucle-gear 4 in center Knucle-gear 8 incomplete with in the middle of first separates, and Knucle-gear 10 incomplete with in the middle of second engages; When the incomplete non-circular gear in center 3 starts to engage with the second middle elliptic gear 9, the incomplete Knucle-gear 4 in center Knucle-gear 10 incomplete with in the middle of second separates, and Knucle-gear 8 incomplete with in the middle of first engages, it is ensured that the seriality of transmission.
The pitch curve parameter of first middle elliptic gear the 7, second middle elliptic gear 9, first planet elliptic gear 13 and the second planet elliptic gear 14 is identical; In the middle of first, not exclusively the pitch curve parameter of Knucle-gear 8 Knucle-gear 10 incomplete with in the middle of second is identical.
As in figure 2 it is shown, planet carrier 2 rotates counterclockwise, by the variable speed transmission of the incomplete not rounded of ellipse Yu Knucle-gear planetary system, the seedling needle point point of seedling claw 15 forms seedling pick-up trajectory 16; The head of seedling pick-up trajectory is provided with latch closure, is seedling taking section 16-1 from head cusp to pot seedling disk top, and the linearity of seedling taking section is 1mm/20mm, it is ensured that seedling claw vertically leaves pot seedling disk, it is to avoid damage pot seedling 17 during seedling taking.
As shown in Fig. 4-1 and 4-2, seedling claw 15 adopts the prior art of maturation, for instance application number is the patent of 201210293743.3.
As shown in fig. 5-1, in the cycle that planet carrier 2 rotates, when planet carrier corner is 0～280 °, the incomplete non-circular gear in center 3 engages with the first middle elliptic gear 7, its gear ratio i1With planet carrier corner β smooth variation; As shown in Fig. 5-2, when planet carrier corner is 280 °～360 °, the incomplete Knucle-gear 4 in center Knucle-gear 8 incomplete with in the middle of first engages, its gear ratio i2Steady state value and steady state value relative transmission ratio i is kept after sudden change occurring with planet carrier corner β1Excursion do not occur sharply changing. Visible, it is little that the incomplete Knucle-gear in center 4 Knucle-gear 8 incomplete with in the middle of first engages the sudden change causing planetary system first order gear pair gear ratio, and achieves gear ratio i in planet carrier rotation small angle range2Whole change procedure, be simultaneously achieved planet carrier rotate the whole cycle in, the change that planetary system first order gear pair gear ratio is comparatively mild, compared with prior art, stable drive, impulsive force is little.Occur the gear ratio variation tendency shown in Fig. 5-1 and 5-2 be due to planet carrier corner be 280 ° time, center partial gear 3 and the first middle elliptic gear 7 separate, and simultaneously the incomplete Knucle-gear 4 in center Knucle-gear 8 incomplete with in the middle of first starts to engage; When planet carrier corner is 360 °, the incomplete Knucle-gear 4 in center Knucle-gear 8 incomplete with in the middle of first separates, and center partial gear 3 and the first middle elliptic gear 7 start engagement simultaneously.
The operation principle of this ellipse not exclusively not rounded and Knucle-gear planetary system vegetable seedling picking mechanism:
Power passes to planet carrier 2 through central shaft 1, drives planet carrier 2 to rotate; Center incomplete non-circular gear 3 empty set is fixed on central shaft 1 and with frame, and planet carrier 2 drives first middle elliptic gear the 7, second middle elliptic gear 9, first planet elliptic gear 13 and the second planet elliptic gear 14 to revolve round the sun; The both sides of the first middle elliptic gear 7 are engaged with the incomplete non-circular gear 3 in center and first planet elliptic gear 13 respectively, the both sides of the second middle elliptic gear 9 are engaged with the incomplete non-circular gear 3 in center and the second planet elliptic gear 14 respectively, it is achieved that the variable speed transmission of seedling claw 15; When the incomplete non-circular gear in center 3 starts to engage with the first middle elliptic gear 7, the incomplete Knucle-gear 4 in center Knucle-gear 8 incomplete with in the middle of first separates, and Knucle-gear 10 incomplete with in the middle of second engages; When the incomplete non-circular gear in center 3 starts to engage with the second middle elliptic gear 9, the incomplete Knucle-gear 4 in center Knucle-gear 10 incomplete with in the middle of second separates, and Knucle-gear 8 incomplete with in the middle of first engages, it is ensured that the seriality of transmission.
When planet carrier 2 turns to and pushes away Seedling position, push away Seedling cam 15-1 and push away Seedling shift fork 15-2 rotation, push away Seedling shift fork 15-2 and drive the seedling-pushing rod 15-3 head movement to seedling claw 15, the Seedling pawl 15-6 that pushes away of seedling-pushing rod head completes to push away Seedling action, seedling pin 15-4 opens under the effect of seedling-pushing rod, and pot seedling 17 comes off; When planet carrier 2 turns to seedling taking position, push away Seedling shift fork 15-2 and be in the closely section of stopping pushing away Seedling cam 15-1, seedling-pushing rod 15-3 and push away Seedling shift fork 15-2 and return to initial position under the effect of spring 15-5, seedling pin 15-4 clamps the pot seedling 17 in pot seedling disk under the effect pushing away Seedling pawl 15-6, completes seedling taking action and prepares for pushing away Seedling next time.
Claims (3)
1. the incomplete not rounded of ellipse and Knucle-gear planetary system vegetable seedling picking mechanism, it is characterised in that: include central shaft, planet carrier, the incomplete non-circular gear in center, the incomplete Knucle-gear in center, the first jackshaft, the second jackshaft, the first middle elliptic gear, the first middle not exclusively Knucle-gear, the second middle elliptic gear, the second middle not exclusively Knucle-gear, first planet axle, the second planet axis, first planet elliptic gear, the second planet elliptic gear and seedling claw;
One end of described central shaft is connected with power set, and the other end and planet carrier are fixed; The incomplete non-circular gear in described center and frame are fixed, and the incomplete Knucle-gear in center and the incomplete non-circular gear in center are fixed, and the gear teeth of the gear teeth of the incomplete Knucle-gear in center and the incomplete non-circular gear in center are arranged on not homonymy; The incomplete non-circular gear in described center and the center equal empty set of incomplete Knucle-gear is on center shaft; The first described jackshaft and the second jackshaft are symmetricly set on central shaft both sides, and are all connected by bearing with planet carrier; The first described middle elliptic gear and the first jackshaft are connected by spline, and in the middle of first, incomplete Knucle-gear empty set is on the first jackshaft, and fixes with the first middle elliptic gear; The second described middle elliptic gear and the second jackshaft are connected by spline, and in the middle of second, incomplete Knucle-gear empty set is on the second jackshaft, and fixes with the second middle elliptic gear; Described first planet axle and the second planet axis are symmetricly set on planet carrier two ends, and are all connected by bearing with planet carrier; Described first planet elliptic gear is connected by spline with first planet axle, and the second planet elliptic gear and the second planet axis are connected by spline; One end of first planet axle and the second planet axis is all stretched out the outer housing with a seedling claw of planet carrier and is fixed; The both sides of described first middle elliptic gear are connected by gear pair with the incomplete non-circular gear in center and first planet elliptic gear respectively; The both sides of the second middle elliptic gear are connected by gear pair with the incomplete non-circular gear in center and the second planet elliptic gear respectively; In the middle of the incomplete Knucle-gear in described center and first, not exclusively Knucle-gear or the second middle not exclusively Knucle-gear are connected by gear pair.
2. a kind of oval not exclusively not rounded according to claim 1 and Knucle-gear planetary system vegetable seedling picking mechanism, it is characterised in that: the pitch curve parameter of described the first middle elliptic gear, the second middle elliptic gear, first planet elliptic gear and the second planet elliptic gear is identical;In the middle of described first, not exclusively the pitch curve parameter of Knucle-gear and the second middle not exclusively Knucle-gear is identical.
3. a kind of oval not exclusively not rounded according to claim 1 and Knucle-gear planetary system vegetable seedling picking mechanism, it is characterised in that: described planet carrier rotates, and the seedling needle point point of seedling claw forms seedling pick-up trajectory; The head of described seedling pick-up trajectory is provided with latch closure, is seedling taking section from head cusp to pot seedling disk top, and the linearity of seedling taking section is 1mm/20mm～1mm/10mm.
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| CN201410104229.XA CN103959966B (en) | 2014-03-19 | 2014-03-19 | A kind of oval not exclusively not rounded and Knucle-gear planetary system vegetable seedling picking mechanism |
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| CN104255146B (en) * | 2014-08-27 | 2016-05-04 | 浙江理工大学 | A kind of noncircular planetary gear is three-jaw rice seedling transplanter structure |
| CN105009754B (en) * | 2015-07-01 | 2017-01-18 | 浙江理工大学 | Reverse design method for gear pair of non-circular gear planetary rice potted-seedling transplanting mechanism |
| CN105746059B (en) * | 2016-03-02 | 2017-09-05 | 浙江理工大学 | The incomplete off-centre operation noncircular planetary gear system vegetables seedling picking mechanism of concave tooth |
| CN111557155A (en) * | 2020-06-09 | 2020-08-21 | 云南省农业科学院园艺作物研究所 | Device and method for transplanting vegetables in plateau and mountain areas |
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| JP2782865B2 (en) * | 1989-11-28 | 1998-08-06 | 井関農機株式会社 | Seedling plant |
| CN202818941U (en) * | 2012-08-17 | 2013-03-27 | 浙江理工大学 | Eccentric circle non-circular gear planetary gear train plug seedling taking mechanism |
| CN202873313U (en) * | 2012-09-17 | 2013-04-17 | 浙江理工大学 | Eccentric circular-noncircular gear planetary gear train rice pot seedling transplanting mechanism |
| CN202889926U (en) * | 2012-09-17 | 2013-04-24 | 浙江理工大学 | Rice pot seedling transplanting mechanism of ellipse-incompletely non-circular gear planetary gear train |
| CN203840744U (en) * | 2014-03-19 | 2014-09-24 | 浙江理工大学 | Vegetable seedling taking mechanism of elliptic-partial noncircular and circular gear planetary system |
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