CN-117678390-B - Reversible swing type seedling taking mechanism for dry land pot seedlings

CN117678390BCN 117678390 BCN117678390 BCN 117678390BCN-117678390-B

Abstract

A seedling taking mechanism for the pot seedling in dry land is composed of a planetary axle fixed to the casing of gear box, the first-stage drive gear and cam for pushing seedlings, the seedling taking arm fixed to said planetary axle, the seedling pushing mechanism, the drive module consisting of first-stage drive gear, first-stage driven gear, drive axle I, second-stage drive gear, second-stage driven gear and drive axle II, and the swinging module consisting of end cam I, end cam II, compressed spring, swing rod I, swing rod II, swing rod axle, swing rod chain, needle slide I, needle slide II, needle I and needle II.

Inventors

XIN LIANG
LI ZEZE
ZHANG HAO
FENG YUCHEN
LI JIACHENG

Assignees

东北农业大学

Dates

Publication Date: 20260508
Application Date: 20240112

Claims (5)

1. The utility model provides a seedling mechanism is got to convertible swing type dry land alms bowl seedling, includes non-circular gear planetary gear train mechanism (1) and gets seedling mechanism assembly (5), the inboard one end of planet axle (3) is the inboard rigid coupling of gear box casing (2) of non-circular gear planetary gear train mechanism (1) on planet axle (3), be located the seedling arm casing (8) installation cooperation of getting of seedling mechanism assembly (5) in gear box casing (2) outside position department, will get seedling mechanism assembly (5) rotatable dress on planet axle (3), get seedling arm casing (8) inboard and planet wheel (4) rigid coupling of non-circular gear planetary gear train mechanism (1), the other end and the seedling cam (25) rigid coupling that pushes away of getting seedling mechanism assembly (5) of planet axle (3), its characterized in that: the transmission shaft I (17) and the transmission shaft II (16) are rotatably arranged on the seedling taking arm shell (8), two sides of the transmission shaft I (17) are fixedly connected with a primary driven gear (20) and a secondary driving gear (18) respectively, the outer side of the transmission shaft II (16) is fixedly connected with a secondary driven gear (15), a primary driving gear (19) is fixedly connected on the planetary shaft (3) at the inner side of the seedling pushing cam (25), the primary driving gear (19) is meshed with the primary driven gear (20), the second-stage driving gear (18) is meshed with the second-stage driven gear (15), the middle part of the transmission shaft II (16) is fixedly connected with an end cam I (24) and an end cam II (23) respectively, a seedling taking swing rod shaft (14) is rotatably arranged on a seedling taking arm shell (8) side by side, a seedling taking swing rod I (7) and a seedling taking swing rod II (13) are sleeved on the seedling taking swing rod shaft (14) respectively, two ends of a seedling taking compression spring (6) are respectively pressed against the seedling taking arm shell (8) and the seedling taking swing rod I (7) and the seedling taking swing rod II (13), one end of the seedling taking swing rod I (7) is in close contact fit with the outer side end surface of the end cam I (24), the other end of the seedling taking swing rod I (7) is hinged with a hinge point of a seedling taking swing rod link I (9), the other end of the seedling taking swing rod II (13) is in close contact fit with the outer side end surface of the end surface cam II (23), the other end of the seedling taking swing rod II (13) is hinged with a hinge point of the seedling taking swing rod II (12), the seedling taking swing rod I (7) and the needle II (21) can be arranged on a needle slider (21) and a needle slider (21) which can be respectively arranged on the seedling taking swing rod I and the needle II (21), the seedling needle I (10) and the seedling needle II (11) are fixedly connected with the seedling needle sliding block I (22) and the seedling needle sliding block II (21) at a certain angle respectively, and the seedling needle I (10) and the seedling needle II (11) are symmetrically arranged.
2. The reversible swing type dry land pot seedling picking mechanism according to claim 1, wherein the transmission ratio of the primary driving gear (19) to the primary driven gear (20) is 4:1, and the transmission ratio of the secondary driving gear (18) to the secondary driven gear (15) is 4:1.
3. The reversible swing type seedling picking mechanism for dry land pot seedlings according to claim 1, characterized in that the end face cam I (24) and the end face cam II (23) are arranged in a 180-degree phase difference mode, the end face cam II (23) is arranged on the right side of the end face cam I (24), and a distance slightly longer than the thickness of the seedling pushing cam (25) is reserved between the end face cam I (24) and the end face cam II (23).
4. The reversible swing type dry land pot seedling picking mechanism according to claim 1, wherein the end cam I (24) and the end cam II (23) are divided into 16 parts on average, 8 adjacent parts are a group, each part controls seedling needles to swing back and forth once, and the direction of seedling needle swing is reversed between the 8 th part and the 9 th part and between the 16 th part and the 1 st part.
5. The reversible swing type dry land pot seedling picking mechanism according to claim 1, wherein the end faces formed by the end face cam I (24) and the end face cam II (23) are not in mirror image relationship, so that the condition that the seedling needle I (10) and the seedling needle II (11) swing leftwards and rightwards in a process is met, and the swing speed of the seedling needle I (10) and the seedling needle II (11) has a relative movement speed difference in a specific stage.

Description

Reversible swing type seedling taking mechanism for dry land pot seedlings Technical Field The invention belongs to agricultural machinery, and mainly relates to a reversible swing type seedling taking mechanism for dry land pot seedlings. Background The pot seedling transplanting has the advantages of fully utilizing the photo-thermal resources, shortening the field growth period, improving the survival rate of crops, resisting the damage of plant diseases and insect pests to seedlings and the like, and is widely applied to transplanting various crop seedlings in dry lands. The key of the existing full-automatic dry land pot seedling transplanting machine is that in the seedling taking stage, pot seedlings must be taken out from a seedling tray through the operation of a core mechanism, and then seedlings are conveyed to a planting machine to finish the planting of the pot seedlings, or the core mechanism can directly carry out seedling conveying and planting operations after the seedling taking process is finished. In order to ensure that seedlings raised by dry crops have sufficient growth space and nutrients at the seedling stage, most of the raised plug seedlings have different characteristics and large sizes, so that the mechanical seedling taking process is extremely difficult. At present, the core seedling taking mechanism works in a mode of clamping seedling stems or a mode of clamping seedling soil bowls, in order to be capable of taking out seedlings more stably, a seedling box for placing seedlings is stopped at a seedling taking position in a matched control mode by a transversely moving seedling feeding mechanism, so that seedlings are clamped and taken in a static state, the intermittent motion greatly reduces the efficiency of overall seedling taking, and meanwhile, the seedling box and the seedlings driven by the overall seedling feeding mechanism in the starting and stopping process have large inertia force, so that the seedlings fall and fall due to large vibration. Disclosure of Invention The invention aims at solving the problems existing in the prior art, combines the requirements of agricultural production operation, designs a seedling taking mechanism capable of reversing swinging type dry land pot seedlings on the basis of matching with the continuous transverse seedling feeding mechanism for delivering seedlings, drives a seedling taking mechanism assembly through a set of non-circular gear planetary gear train mechanism, not only can realize the transplanting track and the posture of the seedling taking process, but also can realize the same transverse moving speed as the continuous transverse seedling delivering during seedling taking, namely, the seedling needle speed and the seedling moving transversely keep a relatively static state for seedling taking during seedling taking, greatly reduces damage to the seedlings during seedling taking, and increases seedling taking efficiency during transplanting. The aim of the invention is realized in the following way: the seedling taking mechanism comprises a non-circular gear planetary gear train mechanism and a seedling taking mechanism assembly, wherein one end of the inner side of a planetary shaft is fixedly connected with the inner side of a gear box shell of the non-circular gear planetary gear train mechanism, the seedling taking arm shell of the seedling taking mechanism assembly is arranged and matched on the planetary shaft at the outer side of the gear box shell of the non-circular gear planetary gear train mechanism, the seedling taking mechanism assembly is rotatably assembled on the planetary shaft, the inner side of the seedling taking arm shell is fixedly connected with a planet wheel of the non-circular gear planetary gear train mechanism, the other end of the planetary shaft is fixedly connected with a seedling pushing cam of the seedling taking mechanism assembly, a transmission shaft I and a transmission shaft II are rotatably arranged on the seedling taking arm shell, two sides of the transmission shaft I are fixedly connected with a primary driven gear and a secondary driving gear respectively, the outer side of the transmission shaft II is fixedly connected with the secondary driven gear, a first-stage driving gear is fixedly connected on the planetary shaft at the inner side of the seedling pushing cam, the first-stage driving gear is meshed with a first-stage driven gear, a second-stage driving gear is meshed with a second-stage driven gear, the middle part of the transmission shaft II is fixedly connected with the end cam I and the end cam II respectively, the seedling taking swing rod shafts are rotatably arranged on the seedling taking arm shell side by side, the seedling taking swing rod I and the seedling taking swing rod II are respectively sleeved on the seedling taking swing rod shaft, two ends of the seedling taking compression spring are respectively pressed against the seedling taking arm shell and t