The invention discloses a horizontal adjusting mechanism of an interfield seeding precision seeder, which mainly relates to the technical field of agricultural precision seeder. There is a translational and rotational parallel mechanism composed of three different branch chains, a static platform and a moving platform, among which three moving pairs are driving pairs. Three moving pairs is adjusted to realize the adjustment of the levelness of the vibrating seed plate of the planter. Its advantages are: the stiffness of the mechanism is large, the bearing capacity is strong, the adjustment precision is high, and adjustment the horizontal position of the seeder is easy, all of which can be for the realization of the field seedling precision sowing conditions.

Background technique

Sowing is an important technical link in the process of agricultural production. Along with the rapid development of our economy and society, the continuous progress of agricultural science and technology, and the implementation of precision agriculture, higher requirements for sowing quality are put forward. Seeder is the main means to realize mechanization and precision seeding technology, and its performance directly affects the quality of seeding and the growth of crops and yield. The field seedling raising precision seeder matched with the present invention is an air suction vibrating disk type precision seeder. It can overcome many shortcomings of mechanical sowing device: the geometric size of seeds is not strict, and single seed on demand is easy to achieve. It has advantages of high operation speed and low seed damage rate. If there is a certain tilt angle of vibration plate in the seeding process, there will be no seeds in some positions on the seed tray, resulting in no absorption of seeds for some suction holes and seeding holes. Even after the treatment before seedling cultivation, there is bound to be some uneven places. When seeding is carried out on the walking guide rail laid in the field, there may be two inclination angles in the horizontal direction of the vibrating seed plate of the planter, which requires a horizontal adjustment mechanism to keep the vibration seed plate of the planter vibrating in the horizontal state, so as to ensure the precision seeding requirements of the air-sucking vibrating precision planter.

The horizontal adjusting mechanism of the invention is a spatial parallel mechanism with one translation, two rotations and three degrees of freedom. Three moving pairs are selected as driving pairs, and it can accurately realize the requirements of Angle adjustment in two directions.

The invention has the advantages of:

(1) The parallel mechanism with two rotations and one translation is simple in structure, and the kinematics of the two loop equations are independent, and the input and output relations are analytical solutions.

(2) The mechanism has the advantages of simple structure, high stiffness and large working space.

(3) The horizontal adjustment mechanism of the precision planter for field seedling cultivation has high motion precision and is easy to control, which can realize the requirements of horizontal adjustment under harsh environment.