CN2638410Y

CN2638410Y - Eccentric gear planetary system separate rice transplanting mechanism of rice planter

Info

Publication number: CN2638410Y
Application number: CN 03277656
Authority: CN
Inventors: 王珏; 张璐; 蒋永宁
Original assignee: AGRICULTURAL MACHINERY TECHNOLOGY EXTENSION STATION JIANGSU CHINA
Current assignee: AGRICULTURAL MACHINERY TECHNOLOGY EXTENSION STATION JIANGSU CHINA
Priority date: 2003-08-15
Filing date: 2003-08-15
Publication date: 2004-09-08
Anticipated expiration: 2013-08-15

Abstract

The utility model relates to an eccentric gear planetary system type separate rice transplanting mechanism of a rice transplanting machine, which comprises planting arms, a cam, a lever and a gearbox, wherein the planting arm is provided with a spring, a seedling pulling device and a seedling pawl; the gearbox is provided with five eccentric gears which are arranged in a line and engaged with each other, the sun gear in arranged in the centre, the transitional gears are arranged tightly on both sides of the sun gear, and the drive gears are arranged at both ends of the sun gear; the planting arms are placed at both ends of the gearbox. The utility model is characterized in that the pitch circle radius of the five engaged eccentric gears is 22.94 mm, and the eccentric distance is 4.2 to 7 mm. The utility model has the advantages that the eccentric distance is changed to realize the change of the eccentricity epsilon of each gear in the eccentric gear planetary system type separate rice transplanting mechanism, and the planting difficulty of the big seedlings from 28 to 30 cm is solved.

Description

The eccentric gear planetary system transplanting mechanism of rice transplanter

Technical field:

The utility model relates to a kind of transplanting mechanism of rice transplanter, especially a kind of eccentric gear planetary system transplanting mechanism.

Background technology:

Transplanting mechanism is the main working parts of rice transplanter, and it comprises transplanting mechanism and track controlling organization, and for finishing seedling taking under the cooperation of rice seedling distribution mechanism, separating seedlings or planting and the action of rice transplanting, its service behaviour has crucial influence to the rice transplanting quality.

" agricultural mechanics " (first volume) (chief editor of Agricultural University Of Nanjing according to the publication of Chinese agriculture publishing house, front page P132～P138 in 1996, book number ISBN7-109-04479-3/S-2778) record: transplanting mechanism is divided into crank-rocker style transplanting mechanism and eccentric gear planetary system transplanting mechanism two big classes, crank-rocker style is divided into front inserting and rear loading type again, though this rice transplanter stable performance in actual use, but the motion coherence is difficult for overcoming, seedling pawl linear velocity is too high also can to produce the inequality of separating seedlings or planting, hinder defectives such as seedling, and should not cut out and insert the above seedlings of 25cm, especially " gap bridge " phenomenon very easily takes place in front inserting, and rear loading type is used in the walking rice transplanter more, uses also inconvenient.Because eccentric gear planetary system transplanting mechanism processing technology is simple, mechanism's rice transplanting twice that rotates a circle, under the situation that reduces central rotating shaft speed, the unit interval rice transplanting is many on the contrary, and its seedling taking speed is significantly less than the crank-rocker style transplanting mechanism, and damaged seedling rate is little.

Transplanting mechanism in the RR6 type rice transplanter that P600 type that widely used Japan rice transplanter Co., Ltd produces in the present rural area and factory of foreign Malaysia and China state agricultural machinery Co., Ltd produce, all adopted eccentric gear planetary system transplanting mechanism, what they were general can only insert the following rice shoot of 25mm.

Summary of the invention:

The purpose of this utility model is: at the practical problem that present ubiquitous rice transplanter can not be inserted seedlings, provide a kind of energy to insert the transplanting mechanism of 28～30mm seedlings.

According to " agricultural mechanics " (first volume) record, the angular displacement alpha that seedling pin relative movement orbit and eccentricity epsilon, seedling pin and relative each axle center of phase line, driving gear axle axle center are linked to be ₀, each axial connecting line and X-axis (aquatic products line) initial angle displacement ₀, driven wheel (gear III) bearing centre to the seedling needle point apart from S and five relating to parameters of eccentric gear pitch radius R.By analysis, we think: eccentricity epsilon (eccentricity epsilon=eccentric throw/pitch circle radius) not only shape, the size to movement locus has the greatest impact, also have following characteristics simultaneously: (1), bigger to track two ends influences, less to the influence of track stage casing; (2), the seedling pawl is entered seedling door position and distance affects less; (3), under the situation of other parameter constant, movement locus and former mechanism do not have interference.The above-mentioned character of eccentricity epsilon and characteristics make us make rice transplanter adapt to the seedlings of 28～30cm by the method that changes eccentricity epsilon.

The purpose of this utility model is achieved in that a kind of eccentric gear planetary system transplanting mechanism of rice transplanter, comprise the transplant arm that is provided with spring, seedling pushing device and seedling pawl, also comprise cam, lever and the gear-box that is provided with five eccentric gears, five eccentric gear word orders are meshing with each other, centering be central gear, near the central gear both sides are transition gears, two ends are driven wheel, transplant arm places the gear-box two ends, it is characterized in that: five intermeshing eccentric gear pitch radius are 22.94mm, and eccentric throw is 4.2～7mm.

Advantage of the present utility model is: by changing eccentric throw, realize the change to each gear eccentricity epsilon in the eccentric gear planetary system transplanting mechanism, solved the difficult problem of planting to 28～30cm seedlings.

Description of drawings:

Fig. 1 is the structural representation of eccentric gear planetary system transplanting mechanism;

Fig. 2 is the relation curve of eccentric throw and machine transplanting of rice height of seedling degree.

Among Fig. 1: 1, cam, 2, lever, 3, spring, 4, transplant arm, 5, seedling pushing device, 6, the seedling pawl, 7, gear-box, 8, driven wheel, 9, transition gear, 10, central gear.

Embodiment:

Below in conjunction with accompanying drawing the utility model embodiment is further described.

As seen from Figure 1, eccentric gear planetary system transplanting mechanism comprises and is provided with spring 3, the transplant arm 4 of seedling pushing device 5 and seedling pawl 6, also comprise cam 1, lever 2 and the gear-box 7 that is provided with five eccentric gears, five eccentric tooth axle word orders are meshing with each other, centering be central gear 10, near central gear 10 both sides are transition gears 9, two ends are driven wheel 8, transplant arm 4 places gear-box 7 two ends, central gear 10, the pitch radius of transition gear 9 and driven wheel 8 is 22.94mm, in the utility model embodiment, and central gear 10, the eccentric throw of transition gear 9 and driven wheel 8 is 6.6mm.

During work, central gear 10 is motionless, and power transmission shaft driven gear case 7 rotates around central gear 10, in the rotation, driven wheel 8 rotates under the drive of transition gear 9, and drives cam 1, lever 2 synchronization actions, makes the seedling pushing device 5 and the seedling pawl 6 that place transplant arm 4 finish transplanting work.Because each gear eccentric throw increases, cause the movement locus of transplanting mechanism to become big, adapt to planting of 28～30cm seedlings.

Fig. 2 eccentric throw that to be the inventor draw according to experiment repeatedly and the relation curve of machine transplanting of rice height of seedling degree, as seen from the figure: when the eccentric throw of each gear is 4.2mm, the height of machine transplanting of rice seedling is near 26cm, when the eccentric throw of each gear is 5mm, the height of machine transplanting of rice seedling is near 28cm, and when the eccentric throw of each gear was 6.6mm, the height of machine rice shoot was near 31cm, when the eccentric throw of each gear was 7mm, the height of machine rice shoot was near 31.5cm.

Claims

1, a kind of eccentric gear planetary system transplanting mechanism of rice transplanter, comprise the transplant arm that is provided with spring, seedling pushing device and seedling pawl, also comprise cam, lever and the gear-box that is provided with five eccentric gears, five eccentric gear word orders are meshing with each other, centering be central gear, near the central gear both sides are transition gears, two ends are driven wheel, transplant arm places the gear-box two ends, it is characterized in that: five intermeshing eccentric gear pitch radius are 22.94mm, and eccentric throw is 4.2～7mm.