Double-roller type seedling separating and taking device of transplanter

Abstract

The invention discloses a double-roller seedling separating and taking device of a transplanter. The double-roller seedling separating and taking device comprises a double-roller seedling taking device, a seedling separating device installed on the front side of the double-roller seedling taking device and a pair of linkage rods used for connecting the double-roller seedling taking device and the seedling separating device. Each linkage rod comprises a rod body, a shifting rod head at the end part of the rod body and a rotating pin, one end of the rotating pin penetrates through a pin hole in the horizontal part of the rod body, and the other end of the rotating pin is welded on the double-roller seedling taking device. The seedling separating device and the double-roller seedling taking device can synchronously move through a rotating pin of a linkage rod, namely, a seedling separating clamping plate is opened, a double-roller wheel is closed, the seedling separating clamping plate is closed, and the double-roller wheel is opened, so that the seedling taking precision is higher, the seedling taking error is smaller, and the effect of accurately taking seedlings one by one is achieved; the technical defects that in the prior art, due to the fact that a seedling separating clamping plate and a roller are opened and closed at the same time, multiple seedlings are separated at a time due to pneumatic delay and insufficient speed precision of a conveying belt, multiple seedlings are taken, and the seedlings are dumped and blocked during taking are overcome.

Description

Technical Field

[0001] The present invention belongs to the technical field of crop transplanting, and particularly relates to a pair-roller seedling separating and picking device for a transplanter. Background Art

[0002] In China, the planting area and total output of rapeseed both rank first in the world. More than 90% of rapeseed planting is concentrated in the winter rapeseed area of the Yangtze River Basin. The rotation planting mode of rice and rapeseed with two or three crops per year in paddy fields and dry fields leads to prominent stubble contradictions. Rapeseed seedling transplanting is an important way to alleviate stubble contradictions. Compared with the characteristics of high labor intensity and high cost of manual transplanting, mechanical transplanting has the advantages of less manual consumption and high planting efficiency. At present, mechanical transplanting is divided into seedling feeding, seedling separating, seedling picking, and planting links. The seedling feeding process is mainly completed manually and is suitable for small-scale field operations. The seedling separating methods are divided into pin-block type and push-rod type. Among them, the pin-block type is suitable for substrate block seedlings with an inverted cone-shaped pot body, and the push-rod type has the phenomenon of damaging seedlings. The seedling picking methods are divided into insertion type and ejecting and clamping type, which have the phenomenon of damaging the root system of pot seedlings and the soil structure of pot seedlings, reducing the survival rate of seedling transplanting. After seedling picking, it is necessary to cooperate with the planting mechanism to complete the transplanting process. The existing rapeseed transplanters mostly use pot seedlings and plug seedlings for seedling raising. Among them, a large number of pot bodies are consumed during the seedling raising process of pot seedlings, increasing labor costs. Moreover, the seedlings are prone to root coiling and root entanglement in the pot body during later growth, affecting crop growth. Summary of the Invention

[0003] The purpose of the present invention is to provide a pair-roller seedling separating and picking device for a transplanter that can achieve accurate and one-by-one seedling picking in view of the above deficiencies in the technology.

[0004] To achieve the above purpose, the pair-roller seedling separating and picking device for a transplanter designed by the present invention includes a pair-roller seedling picking device, a seedling separating device installed on the front side of the pair-roller seedling picking device, and a pair of linkage rods for connecting the pair-roller seedling picking device and the seedling separating device; each of the linkage rods includes a rod body, a lever head at the end of the rod body, and a rotating pin. One end of the rotating pin passes through the pin hole in the horizontal part of the rod body and the other end is welded to the pair-roller seedling picking device.

[0005] Further, the pair-roller seedling picking device includes a stepping motor, a gear reversing box connected to the output shaft of the stepping motor, a rotating shaft respectively connected to the two output shafts of the gear reversing box through elastic couplings, a roller installed at the end of each rotating shaft, and a guide rail installed on the outer shell of the gear reversing box; the other end of the rotating pin is welded to the outer shell of the gear reversing box.

[0006] Further, the rotating shaft is stuck in the lever head.

[0007] Further, the seedling separating device includes an opening and closing cylinder installed on the outer shell of the gear reversing box through a cylinder fixing plate, two connecting rods, and two seedling separating plates. One end of each connecting rod is respectively connected to a cylinder opening and closing claw of the opening and closing cylinder, and the other end of each connecting rod is respectively fixed to the outer side of the corresponding seedling separating plate. The tail end of the rod body is connected and fixed to the cylinder opening and closing claw.

[0008] Further, the guide rail includes a guide rail groove and protruding rods arranged at both ends of the guide rail groove, and the protruding rods are perpendicularly arranged with respect to the guide rail groove. Both protruding rods are inserted into two bushings of the outer shell of the gear reversing box, and the rotating shaft extends along the protruding guide rail groove.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: The seedling separating device of the present invention and the roller seedling picking device can achieve synchronous movement through the rotating pin of the linkage rod, that is, when the seedling separating clamp plate opens, the roller wheel closes, and when the seedling separating clamp plate closes, the roller wheel opens, resulting in higher seedling picking accuracy and smaller seedling picking errors, thereby achieving the effect of precise single-by-single seedling picking, overcoming the technical defects in the prior art that the seedling separating clamp plate and the roller wheel open and close simultaneously, and it is easy to pick multiple seedlings at one time due to pneumatic delay and insufficient conveyor belt speed accuracy, resulting in over-picking, seedling picking dumping and blockage, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a three-dimensional structural schematic diagram of the roller type seedling separating and picking device of the transplanter of the present invention;

[0011] Figure 2 is Figure 1 the structural schematic diagram of the linkage rod in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0013] As Figure 1 shown, the roller type seedling separating and picking device of the transplanter includes a roller seedling picking device, a seedling separating device installed on the front side of the roller seedling picking device, and a pair of linkage rods for connecting the roller seedling picking device and the seedling separating device; the roller seedling picking device includes a stepping motor 1, a gear reversing box 2 connected to the output shaft of the stepping motor 1, rotating shafts 4 respectively connected to the two output shafts of the gear reversing box 2 through elastic couplings 3, roller wheels 5 installed at the ends of each rotating shaft 4, and a guide rail 10 installed on the outer shell of the gear reversing box 2.

[0014] The guide rail 10 includes a guide rail groove 10a and protruding rods 10b arranged at both ends of the guide rail groove 10a, and the protruding rods 10b are perpendicularly arranged with respect to the guide rail groove 10a. Both protruding rods 10b are inserted into two bushings 11 of the outer shell of the gear reversing box 2, and the rotating shaft 4 extends along the protruding guide rail groove 10a, so that the rotating shaft 4 can only move back and forth within the guide rail groove 10a during operation, avoiding swinging back and forth during operation.

[0015] The seedling separating device includes an opening and closing cylinder 8 mounted on the outer shell of the gear reversing box 2 through a cylinder fixing plate 8a, two connecting rods 7, and two seedling separating plates 6. One end of each connecting rod 7 is respectively connected to a cylinder opening and closing claw 9 of the opening and closing cylinder 8, and the other end of each connecting rod 7 is respectively fixed to the outer side of the corresponding seedling separating plate 6. Each seedling separating plate 6 is parallelly mounted on the synchronous conveyor belt frame through a rotating shaft.

[0016] As Figure 2 shown, each linkage rod 12 includes a rod body 12a, a dial head 12b at the end of the rod body 12a, and a rotating pin 13. The rotating shaft 4 is stuck in the dial head 12b, and the tail end of the rod body 12a is connected and fixed to the cylinder opening and closing claw 9; one end of the rotating pin 13 passes through the pin hole 12c in the horizontal part of the rod body 12a, and the other end is welded to the outer shell of the gear reversing box 2.

[0017] During operation, when the opening and closing cylinder opens, while the seedling separating plates open, the rollers close and stop rotating under the drive of the linkage rod around the rotating pin. The seedling-carrying substrate block between the seedling separating plates moves forward to the front end of the pair of rollers and is blocked from moving, completing the feeding stage of the seedling-carrying substrate block; when the opening and closing cylinder closes, the seedling separating plates clamp and restrain the subsequent seedling-carrying substrate blocks. At the same time, the rollers open and start rotating under the drive of the linkage rod. The seedling-carrying substrate block not clamped at the end of the synchronous belt moves forward under the conveying action of the synchronous belt, completing one action of the seedling separating stage; the seedling-carrying substrate block continuing to move forward at the end of the conveyor belt pushes the seedling-carrying substrate block on the seedling table forward to between the pair of rollers, and is clamped and restrained by the two rollers and falls to the bottom of the seedling furrow, completing the seedling picking stage by the pair of rollers; the seedling separating plates continue to open, the two rollers close and stop rotating, and the seedling-carrying substrate block on the seedling table is pushed forward by the subsequent seedling-carrying substrate block on the synchronous belt to the front end position of the pair of rollers, waiting to be fed and picked. This process circulates in sequence.

[0018] The seedling separating device of the present invention and the seedling picking device by the pair of rollers can achieve synchronous movement through the rotating pin of the linkage rod, making the seedling picking accuracy higher and the seedling picking error smaller, thereby achieving the effect of precise one-by-one seedling picking.

Claims

1. A roller seedling separation device for a transplanter, comprising a roller seedling removal device, a seedling separation device installed in front of the roller seedling removal device, and a pair of linkage rods for connecting the roller seedling removal device and the seedling separation device; characterized in that: Each linkage rod (12) comprises a rod body (12a), a lever head (12b) at the end of the rod body (12a) and a rotating pin (13); one end of the rotating pin (13) passes through a pin hole (12c) at a horizontal portion of the rod body (12a), and the other end is welded to the roller seedling removal device.

2. The roller seedling sorting device for a transplanter according to claim 1, characterized in that: The roller seedling removal device comprises a stepping motor (1), a gear reversing box (2) connected to the output shaft of the stepping motor (1), a rotating shaft (4) respectively connected to the two output shafts of the gear reversing box (2) through an elastic coupling (3), a roller (5) installed at the end of each rotating shaft (4), and a guide rail (10) installed on the outer shell of the gear reversing box (2); the other end of the rotating pin (13) is welded to the outer shell of the gear reversing box (2).

3. The roller seedling sorting device for a transplanter according to claim 2, characterized in that: The rotating shaft (4) is clamped in the lever head (12b).

4. The roller seedling sorting device for a transplanter according to claim 1, characterized in that: The seedling separation device comprises an opening and closing cylinder (8) mounted on the outer shell of a gear reversing box (2) via a cylinder fixing plate (8a), two connecting rods (7) and two seedling separation plates (6); one end of each connecting rod (7) is respectively connected to a cylinder opening and closing claw (9) of the opening and closing cylinder (8); the other end of each connecting rod (7) is respectively fixed to the outer side surface of the corresponding seedling separation plate (6); and the rear end of the rod body (12a) is connected and fixed to the cylinder opening and closing claw (9).

5. The roller seedling sorting device for a transplanter according to claim 2, characterized in that: The guide rail (10) comprises a guide rail groove (10a) and extension rods (10b) arranged at both ends of the guide rail groove (10a), and the extension rods (10b) are arranged vertically to the guide rail groove (10a), the two extension rods (10b) are both inserted into two shaft sleeves (11) of the outer shell of the gear reversing box (2), and the rotating shaft (4) extends along the guide rail groove (10a).

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