30results about How to "Meet the agronomic requirements for transplanting" patented technology

The invention discloses a combined incompletely eccentrically circular and non-circular gear planetary train vegetable seedling pick-up mechanism. An existing pick-up mechanism gains a wide-range variation in a transmission ratio of a pick-up trajectory through a locking arc and has high transmission impact. In the mechanism, a center shaft and a planet carrier are fixed; a central incompletely eccentrically circular gear is fixed to a frame, a central incompletely non-circular gear is fixed to the central incompletely eccentrically circular gear, and both the two gears loosely sleeve the center shaft; a first middle non-circular gear is connected with a first middle shaft through splines, and a first middle incompletely non-circular gear is fixed to a first middle non-circular gear; a second middle non-circular gear is connected with a second middle shaft through splines, and a second middle incompletely non-circular gear is fixed to the second middle non-circular gear; a first planet non-circular gear is connected with a first planet shaft through splines, and a second planet non-circular gear is connected with a second planet shaft through splines; both one end of a first planet shaft and one end of the second planet shaft are fixed to a shell of a pick-up claw. This mechanism has stable transmission and low impact.

The invention discloses a two-degree-of-freedom variable-crank seven-link flower transplanting mechanism. The two-degree-of-freedom variable-crank seven-link flower transplanting mechanism is used for solving the problem that effects of entering a seedling planting work part at a better attitude and realizing the full automation of a flower transplanting machine are hard to guarantee due to the fact that a double crank mechanism and a planetary gear mechanism can only form one ring-buckle-shaped trajectory. According to the two-degree-of-freedom variable-crank seven-link flower transplanting mechanism, one end of a first crank is fixedly arranged on an output shaft of a first constant-speed motor; one end of a first link is hinged to the first crank, and the other end of the first link is hinged to one end of a second link; the middle part of the second link is hinged to one end of a third link, and the other end of the third link is arranged freely; a cam is fixedly arranged on a machine frame; one end of a second crank is fixedly arranged on an output shaft of a second constant-speed motor, and the other end of the second crank is connected with a sliding block through a sliding pair; a circular gear is hinged to the machine frame and is fixed together with the second crank; the sliding block is hinged to the other end of the third link and is connected with a cam slot of the cam. According to the two-degree-of-freedom variable-crank seven-link flower transplanting mechanism, double ring-buckle-shaped trajectories can be realized, so that the full automation of the flower transplanting machine is realized, and proper angle and speed for flower seedling casting and verticality of seedling planting are guaranteed.

The invention discloses a closed-chain five-link transplanting mechanism for flowers and plants and a design method therefor. A planetary gear train transplanting mechanism can realize flexibility restriction to trajectories; and parameters of a link mechanism with dual-snap-ring trajectories are difficult in design and adjustment. According to the mechanism disclosed by the invention, the bottom end of a first crank and the bottom end of a second crank are welded; the top end of the first crank is hinged to one end of a second link, and the top end of the second crank is hinged to the middle part of a third link; a forked swing link comprises a first swing link and a second swing link, of which bottom ends are hinged; the bottom end of the forked swing link is hinged to a rack; the other end of the second link is hinged to the top end of the first swing link; one end of a first link is hinged to the top end of the second swing link, and the other end of the first link is hinged to one end of the third link; and the other end of the third link is arranged freely. According to the design method disclosed by the invention, the length of each of rest links is determined reversely under the condition of a single-snap-ring trajectory mathematical model formed at the endpoint of the free end of the third link, coordinates of a hinged point of the forked swing link and the rack and known link length. According to the closed-chain five-link transplanting mechanism for the flowers and plants and the design method therefor, a single-snap-ring trajectory is achieved, and the mechanism is simple and easy to control.

The invention discloses a design method for forming a transplanting track by using a five-rod driving mechanism with two degrees of freedom. The existing transplanting mechanism track is not suitable for transplanting flowers. According to the design method, the angular speed w1 of a first crank is set through a normal-speed motor, and a speed-adjustable motor is adjusted through a control circuit, so that the angular speed of a second crank is shown in the specification, wherein w1 is a constant value selected from 50r / min to 70r / min, and theta is a constant value selected from pi / 4 to pi / 2; the direction of the angular speed w2 meets the following change rule under the condition that the period T=2pi, namely that the direction of the angular speed w2 is kept consistent with the direction of the angular speed w1 when the time t is from 0 to T / 3 and is opposite to the direction of the angular speed w1 when the time t is from T / 3 to T, so that a double-buckle transplanting track is formed at the sharp point of the free end of a second connecting rod. The double-buckle transplanting track is achieved by using the five-rod driving mechanism with two degrees of freedom, so that not only can the transplanting tracks of flowers be achieved, but also the fully-automatic transplanting of various crops such as melons, fruits and vegetables can be realized.

The invention discloses a cam-crank-rocker combined flower transplanting mechanism and a design method thereof. A planetary gear transplanting mechanism is limited in flexibility of realizing a trajectory; and a rod mechanism with a double-ring-buckle trajectory is difficult in design and parameter regulation. According to the mechanism provided by the invention, one ends of a cam and a crank are both hinged with a frame through a camshaft; the other end of the crank is hinged with the central part of a second connecting rod; a forked swing rod comprises a bottom-end-welded oscillating rod and a cam swing rod; two ends of a spring are separately connected with the forked swing rod and the frame; a roller is hinged with the top end of the cam swing rod and constitutes a cam pair with the cam; the top end of the oscillating rod is hinged with one end of a first connecting rod; and the other end of the first connecting rod is hinged with one end of the second connecting rod. The design method provided by the invention is as follows: the cam is reversely solved with a mathematical model of a single-ring-button trajectory formed by the terminal point of the free end of the second connecting rod, a coordinate of the hinge joint of the forked swing rod and the frame, and known conditions of rod lengths. According to the invention, through changing of the profile of the cam to control the movement law of a rocker, the single-ring-buckle trajectory is realized, and the mechanism is simple.

The invention discloses a seven-rod flowers and plants translating mechanism with a variable crank with single degree of freedom and a non-circular gear. A double crank mechanism and a planetary gear mechanism just can form a buckled track, so that the mechanism hardly enters into a seedling planting part in a relatively good posture and full-automation of a flowers and plants translating machine is hardly guaranteed. According to the mechanism disclosed by the invention, one end of a first connecting rod is hinged with a first crank while the other end of the first connecting rod is hinged with a second connecting rod; one end of a third connecting rod is hinged with the middle part of the second connecting rod while the other end of the third connecting rod is hinged with a slide block; a second middle non-circular gear is engaged with a second driven non-circular gear; the second driven non-circular gear is fixed with a second crank; a cam is fixed with a frame, and the slide block is connected with a chute of the cam through a cam pair. The mechanism disclosed by the invention can realize the buckled track so as to realize full-automation of the flowers and plants translating machine, so that the proper seedling dropping angle and speed of flowers and plants and the planting upright degree are guaranteed.

The invention discloses a tooth bar-incomplete non-circular-elliptical gear planetary system vegetable seedling-taking mechanism. The existing seedling-taking mechanism utilizes a locking arc to realize long-range change of a transmission ratio of a seedling-taking locus so that mechanism transmission impact is large. According to the tooth bar-incomplete non-circular-elliptical gear planetary system vegetable seedling-taking mechanism, a center shaft and a planetary carrier are fixed, a central incomplete non-circular gear and a frame are fixed, a central rack and the central incomplete non-circular gear are fixed, the central incomplete non-circular gear and the central rack sleeve the center shaft without key joint, a first middle elliptical gear is in a splined connection relationship with a first middle shaft, a first middle incomplete non-circular gear and the first middle elliptical gear are fixed, a second middle elliptical gear is connected to a second middle shaft by a spline, a second middle incomplete non-circular gear and the second middle elliptical gear are fixed, a first planetary elliptical gear and a first planetary gear shaft are connected by a spline, a second planetary elliptical gear and a second planetary gear shaft are connected by a spline, and one end of each one of the first planetary gear shaft and the second planetary gear shaft stretches out of the planetary carrier and then is fixed to the housing of a seedling-taking claw. The tooth bar-incomplete non-circular-elliptical gear planetary system vegetable seedling-taking mechanism has the advantages of stable transmission and small impact.