Forcible seedling pushing method and planting arm of magnet moving type seedling planting machine

Abstract

The invention relates to a forcible seedling pushing method and a planting arm of a magnet moving type seedling planting machine. The forcible seedling pushing planting arm comprises a planting arm shell 1, at least one installation hole 2, an electric magnet 3, an armature iron 4, a spring 5, a seedling pushing rod 6 and a seedling needle 7. The planting arm is arranged on a separating-planting mechanism through the at least one installation hole 2, and trails needed by seedling planting are realized following the separating-planting mechanism. The planting arm is characterized in that the armature iron 4 is fixedly connected with the seedling pushing rod 6; one end of the spring 5 is fixed on the planting arm shell 1, and the other end of the same is fixedly connected with the armature iron 4; and the armature iron 4 and the seedling pushing rod 6 realize reciprocating motion without motion transformation under the action of the suction force of the electric magnet 3 and the spring force of the spring 5. Compared with the traditional mechanical type seedling pushing device, the invention has light mass, simple structure and accurate response and can meet the requirements for any seedling planting speed.

Description

technical field [0001] The invention relates to a rice transplanter, in particular to a forced seedling-pushing and planting arm which can be used in various transplanting mechanisms of rice transplanters. Background technique [0002] The seedling pushing device in the planting arm of the rice transplanter is a timing reciprocating mechanism, and its function is to remove a small piece of the blanket-like seedling on the seedling box of the rice transplanter and plant it in the field. At present, the planting arm structure of the planetary gear train-type splitting mechanism of the rice transplanter sold in the domestic and foreign markets and the transmission principle of the pusher device are consistent, and the transmission principle of the pusher device in the four-bar type splitting mechanism for walking rice transplanters is also the same. Basically the same, the planting arm realizes the trajectory of seedling transplanting with the sub-planting mechanism, and the se...

AI Technical Summary

Problems solved by technology

At present, the planting arm structure of the planetary gear train-type splitting mechanism of the rice transplanter sold in the domestic and foreign markets and the transmission principle of the pusher device are consistent, and the transmission principle of the pusher device in the four-bar type splitting mechanism for walking rice transplanters is also the same. Basically the same, the planting arm realizes the trajectory of seedling transplanting with the sub-planting mechanism, and the seedling pushing device in the planting arm makes a linear reciprocating motion relative to the planting arm: the pushing action is completed by the plane cam, shifting fork, pushing rod and spring. Its structural form Simple, but because the pusher mechanism needs to work at a frequency of 100 to 200 times per minute during the transplanting operation, it must overcome the force of the pusher spring with a spring greater than 100N in the process, which will inevitably result in high energy consumption and Disadvantages such as fast mechanical wear, relatively large vibration, and short service life, especially the inability to adapt to different speeds, especially when the operating speed changes greatly, the end time of pushing seedlings is often advanced or delayed, which is determined by the start time of pushing seedlings. depends on the profile of the cam, and the length of pushing time depends on the stiffness of the spring

When the transplanting speed is too slow, the seedlings will be pushed ahead of time, otherwise the seedlings will be pushed behind, which will result in poor uprightness of the seedlings and affect the greening of the seedlings

In general, the spring will not be replaced, so the rice transplanter can only work within a certain speed range, and the adaptability to speed is poor.

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