Seedling slinging device and synchronous male and female parent slinging seeder

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a seedling slinging device and a male and female parent synchronous seedling slinging seeder. Comprising a main transmission mechanism which is provided with a main transmission shaft, and two groups of seedling slinging mechanisms are arranged on the seedling slinging rack; each seedling throwing mechanism comprises a seedling conveying belt, a first transmission mechanism, a seedling box, a second transmission mechanism for driving the seedling tray hook claw to intermittently pull the seedling tray downwards, a plurality of ejector rods and a third transmission mechanism for driving the ejector rods to eject seedlings in the seedling tray. Wherein the second transmission mechanism is provided with a seedling tray hook claw facing the seedling box, and the second transmission mechanism is in transmission connection with the main transmission mechanism. The device is compact in structure and does not need excessive power sources, the two seedling throwing devices are driven by the main transmission mechanism to conduct stable and orderly seedling throwing operation, two stages of male parents can be subjected to seedling throwing, the seedling age difference between the male parents can be flexibly adjusted, and the agricultural requirements of different sowing periods of the male parents and the female parents of different varieties are met.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a seedling throwing device and a parent-child synchronous seedling throwing seeder. Background Art

[0002] After more than 40 years of development, hybrid rice has formed a complete system, and its production process includes seed production, seedling raising, transplanting, field management and harvesting, among which seed production is the basis of hybrid rice production. Due to the difference in the growth period of the parents of hybrid rice, the flowering period of the parents is generally inconsistent.

[0003] In order to ensure the consistency of flowering period of the parents, the traditional seed production model requires staggered planting of the parents. The seed production process is complicated, with low production efficiency, time-consuming and labor-intensive, uneven seed quality, and high seed production costs. Therefore, a hybrid rice seeder is needed to replace the traditional seed production model.

[0004] The layout and transmission structure of the seedling throwing part of the existing hybrid rice seeder are unreasonable, resulting in the seeder being equipped with too many additional motors and transmission components, which increases the weight and size of the whole machine and makes it difficult to put it into production. Summary of the invention

[0005] The present invention aims to at least improve one of the technical problems existing in the prior art. To this end, the present invention provides a seedling throwing device and a parent-child synchronous seedling throwing seeder.

[0006] The technical solution of the present invention is as follows: A seedling throwing device, comprising: The seedling throwing machine frame is equipped with a main transmission mechanism, wherein the main transmission mechanism has a main transmission shaft; Two sets of seedling throwing mechanisms are installed in parallel on the seedling throwing machine frame, and each seedling throwing mechanism includes: A seedling conveyor belt is installed on the seedling throwing machine frame and is used to receive the seedlings; A first transmission mechanism is connected to the main transmission mechanism and the rice seedling conveyor belt to drive the rice seedling conveyor belt to rotate; A seedling box is installed on the seedling throwing machine frame and is used to place seedling trays. A seedling picking plate is provided at the bottom of the seedling box, and the seedling picking plate is provided with a plurality of seedling picking holes; A second transmission mechanism has a seedling tray hook claw facing the seedling box, and the second transmission mechanism is transmission-connected with the main transmission mechanism to drive the seedling tray hook claw to periodically and intermittently pull down the seedling tray; A plurality of ejector rods are correspondingly distributed at the seedling extraction holes; The third transmission mechanism comprises: A secondary transmission mechanism, drivingly connected to the main transmission shaft; Two cam drive mechanisms are installed on both sides of the auxiliary drive mechanism and are in driving connection with the auxiliary drive mechanism; A drive plate is installed at the output part of the cam drive mechanism for installing the ejector rod, and can be used to intermittently eject the seedlings in the seedling tray through the third drive mechanism.

[0007] In a possible technical solution, further, the main drive mechanism includes: A main input sprocket is connected to the output shaft of the drive motor; A main drive shaft is fixedly connected to the main input sprocket, and a plurality of gears are installed on the surface of the main drive shaft for adapting to drive a plurality of drive mechanisms.

[0008] In a possible technical solution, further, the seedling conveyor belt has a conveyor belt drive shaft; The first drive mechanism includes: Two first support plates are installed on the seedling throwing frame at intervals; A first drive shaft passes through the two first support plates and is movably connected to the two first support plates. A first driven gear is assembled in the middle of the first drive shaft and meshes with the first main gear on the main drive shaft to drive the first drive rod shaft to rotate. One end of the first drive shaft is assembled with a first helical gear, which meshes with the second helical gear at the end of the conveyor belt drive shaft to drive the seedling conveyor belt to work.

[0009] In a possible technical solution, further, the second drive mechanism includes: Two second support plates are installed on the seedling throwing frame at intervals for installing the main drive shaft. The main drive shaft passes through and extends out of both ends of the two second support plates, and first main sprockets are assembled at both ends; Two third support plates are arranged in front and behind the second support plates and are installed on the seedling throwing frame; Two sets of drive units, each drive unit is installed on the third support plate and is in chain drive with the first main sprocket to drive the seedling tray claw to intermittently pull down the seedling tray periodically.

[0010] In a possible technical solution, further, each drive unit includes: A Z-shaped shaft passes through the third support plate and is assembled with a first driven sprocket, and is in chain drive with the first main sprocket; A first connecting rod, one end of which is connected to the Z-shaped shaft far from the first driven sprocket; A slide rail is fixedly installed on the third support plate, and the slide rail is located on one side of the Z-shaped shaft; A slider is slidably installed on the slide rail; The first connecting shaft passes through the first connecting rod and is connected to the slider; The seedling tray claw is connected to the first connecting shaft; The torsion spring is sleeved on the first connecting shaft and is connected to the first connecting rod and the seedling tray claw. The main transmission shaft drives the Z-shaped shaft and the first connecting rod to rotate, drives the slider to move along the slide rail to drive the seedling tray claw to act, and pulls the seedling tray downward.

[0011] In a possible technical solution, further, the seedling tray claws are symmetrically arranged with respect to the seedling box.

[0012] In a possible technical solution, further, the secondary transmission mechanism includes: Two fourth support plates are spaced and installed on the seedling throwing frame, and the fourth support plate is between the first support plate and the second support plate; The secondary transmission shaft passes through the two fourth support plates and is movably connected to the two fourth support plates. A second driven sprocket is assembled in the middle of the secondary transmission shaft and is driven by a chain by the second main sprocket on the main transmission shaft to drive the secondary transmission shaft to rotate.

[0013] In a possible technical solution, further, the cam transmission mechanism includes: The cam groove is opened on the surface of the fourth support plate; The driving connecting rod has one end connected to the output shaft of the secondary transmission mechanism, and a square groove is opened on the driving connecting rod; The slider crank passes through the square groove and is embedded in the cam groove; The second connecting rod is connected to the end of the slider crank away from the cam groove and is used to drive the second connecting rod to rotate; The pin shaft is connected to the second connecting rod away from the slider crank; The push-pull rod is connected to the pin shaft away from the second connecting rod and is used to connect the driving plate; The axial limit block is installed on the seedling throwing frame, and the push-pull rod passes through the axial limit block for axial limit.

[0014] In a possible technical solution, further, a plurality of grids are provided on the surface of the seedling conveyor belt, and the distance between each grid is equal, which reduces the rolling of the seedlings after falling and increases the stability of seedling throwing.

[0015] The throwing seedling device according to the present invention is structurally compact and requires no excessive power source. The main transmission mechanism drives two groups of throwing seedling devices to perform stable and orderly throwing seedling operations. Specifically, the main transmission mechanism drives the first transmission mechanism to drive the seedling conveyor belt for orderly throwing of seedlings, drives the second transmission mechanism to drive the seedling tray claw to intermittently pull down the seedling tray for feeding seedlings periodically, and drives the third transmission mechanism to drive the ejector rod to push out the seedlings in the seedling tray. The throwing seedling device according to the present invention can throw seedlings for two batches of male parents respectively, flexibly adjust the seedling age difference between the male parents, and meet the agronomic requirements of the sowing difference period required by different varieties of male and female parents. A synchronous throwing and sowing machine for male and female parents, which includes: A frame; The throwing seedling device as described above, installed on the frame; A ride-on power chassis, installed on the frame; A lifting device, installed on the ride-on power chassis; A sowing device, having a sowing machine frame, installed on the lifting device. The sowing machine frame is provided with a male parent water storage ditch opener, and the bottom end of the sowing machine frame is provided with a female parent sowing ditch opener and a female parent water storage ditch opener, which are respectively arranged on both sides of the male parent water storage ditch opener; A seedling box assembly, installed on the top of the third transmission mechanism of the throwing seedling device.

[0016] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic diagram of the overall structure of the throwing seedling device according to the embodiment of the present invention; Figure 2 is a rear view schematic diagram of the throwing seedling device according to the embodiment of the present invention; Figure 3 is Figure 2 an enlarged schematic diagram of part A of; Figure 4 is a schematic diagram of the structure of the throwing seedling device according to the embodiment of the present invention; Figure 5 is a schematic diagram of the structure of 103 of the throwing seedling device according to the embodiment of the present invention; Figure 6 is Figure 5 the enlarged schematic view of part B of Figure 7 is the schematic view from another perspective of the throwing seedling device according to an embodiment of the present invention; Figure 8 is Figure 7 the enlarged schematic view of part C of

[0019] Reference numerals: throwing seedling mechanism 1; seedling conveyor belt 10, conveyor belt drive shaft 101, first connecting plate 102, first annular groove 1020, second connecting plate 103, second annular groove 1030, conveyor belt driven shaft 104, square groove 105, adjusting screw 106; first transmission mechanism 20, first support plate 201, first transmission shaft 202; seedling box 30, seedling taking plate 301, seedling taking hole 302; second transmission mechanism 40, second support plate 401, third support plate 402, Z-shaped shaft 403, first connecting rod 404, slide rail 405, slider 406, first connecting shaft 407, seedling tray claw 408, torsion spring 409; multiple ejector rods 50; third transmission mechanism 60, fourth support plate 601, auxiliary transmission shaft 602, cam groove 603, driving connecting rod 604, slider crank 605, second connecting rod 606, pin shaft 607, push-pull rod 608, axial limiting block 609. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] In the description, claims and drawings of this application, the terms "first", "second", "third", etc. are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a series of steps or units are included, or optionally, steps or units not listed are further included, or optionally, other steps or units inherent to these processes, methods, products or devices are further included.

[0024] Only parts related to this application are shown in the drawings, rather than all content. Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. When the operations are completed, the process can be terminated, but there can also be additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0025] The terms "component", "module", "system", "unit", etc. used in this specification are used to represent computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or distributed between two or more computers. In addition, these units can be executed from various computer-readable media storing various data structures. A unit can communicate, for example, through signals with other systems through local and / or remote processes according to signals having one or more data packets (such as data from a second unit interacting with a local system, a distributed system, and / or a network. For example, the Internet interacting with other systems through signals).

[0026] Embodiment 1 As Figures 1 to 8 shown, this embodiment provides a rice throwing device, which includes: A rice throwing frame is installed with a main transmission mechanism, and the main transmission mechanism has a main transmission shaft. In this embodiment, the main transmission mechanism includes: A main input sprocket is connected to the output shaft of the drive motor; The main transmission shaft is fixedly connected to the main input sprocket, and a plurality of gears are installed on the surface of the main transmission shaft for adapting to drive a plurality of transmission mechanisms.

[0027] Two groups of rice throwing mechanisms 1 are installed side by side on the rice throwing frame, and each rice throwing mechanism 1 includes: The seedling conveyor belt 10 is installed on the throwing seedling frame and is used to receive seedlings and throw out the plug seedlings after ejection. The first transmission mechanism 20 is in transmission connection with the main transmission mechanism and the seedling conveyor belt 10 to drive the seedling conveyor belt 10 to rotate. The seedling box 30 is installed on the throwing seedling frame and is used to place the seedling tray. A seedling picking board 301 is provided at the bottom of the seedling box 30, and a plurality of seedling picking holes 302 are formed in the seedling picking board 301. The second transmission mechanism 40 has a seedling tray claw 408 facing the seedling box 30. The second transmission mechanism 40 is in transmission connection with the main transmission mechanism to drive the seedling tray claw 408 to intermittently pull down the seedling tray periodically. A plurality of ejector rods 50 are correspondingly distributed in the seedling picking holes 302. In this embodiment, there are 14 ejector rods 50, which are installed between the push-pull rods of the third transmission mechanism. This device is more stable and has uniform force compared with the original mechanism, and is convenient for adapting to the existing seedling trays to improve the throwing seedling efficiency. The third transmission mechanism 60 is used to perform the operation of ejecting and picking seedlings from the plug seedlings in the seedling tray, and driving the empty seedling tray away after the ejecting and picking operation, including: A pair of transmission mechanisms, which are in transmission connection with the main transmission shaft. Two cam transmission mechanisms are installed on both sides of the pair of transmission mechanisms and are in transmission connection with the pair of transmission mechanisms. A driving plate is installed at the output part of the cam transmission mechanism and is used to install the ejector rods 50. Through the third transmission mechanism 60, it can be used to intermittently eject the seedlings in the seedling tray.

[0028] It should be noted that the seedling conveyor belt 10 has a conveyor belt drive shaft 101. The first transmission mechanism 20 includes: Two first support plates 201 are installed on the throwing seedling frame at intervals. The first transmission shaft 202 passes through the two first support plates 201 and is movably connected with the two first support plates 201. A first driven gear is assembled in the middle of the first transmission shaft 202 and meshes with the first main gear on the main transmission shaft to drive the first transmission rod shaft 202 to rotate. A first helical gear is assembled at one end of the first transmission shaft 202 and meshes with the second helical gear at the end of the conveyor belt drive shaft 101 to drive the seedling conveyor belt 10 to work.

[0029] It should be noted that the second transmission mechanism 40 includes: Two second support plates 401 are installed on the throwing seedling frame at intervals and are used to install the main transmission shaft. The main transmission shaft passes through and extends out of both ends of the two second support plates 401, and first main sprockets are assembled at the ends. Two third support plates 402 are arranged before and after the second support plate 401 and are installed on the throwing seedling frame; Two sets of transmission units, each transmission unit is installed on the third support plate 402 and is chain-driven with the first main sprocket to drive the seedling tray claw 408 to intermittently pull down the seedling tray periodically. Wherein, each transmission unit includes: A Z-shaped shaft 403 passes through the third support plate 402 and is equipped with a first driven sprocket, and is chain-driven with the first main sprocket; A first connecting rod 404, one end of which is connected to the Z-shaped shaft 403 away from the first driven sprocket; A slide rail 405 is fixedly installed on the third support plate 402, and the slide rail 405 is located on one side of the Z-shaped shaft 403; A slider 406 is slidably installed on the slide rail 405; A first connecting shaft 407 passes through the first connecting rod 404 and is connected to the slider 406; A seedling tray claw 408 is connected to the first connecting shaft 407; A torsion spring 409 is sleeved on the first connecting shaft 407 and is connected to the first connecting rod 404 and the seedling tray claw 408. The Z-shaped shaft 403 and the first connecting rod 404 are driven to rotate by the main transmission shaft, and the slider 406 is driven to move along the slide rail 405 to drive the seedling tray claw 408 to act and pull down the seedling tray downward.

[0030] It should be noted that the seedling tray claws 408 are symmetrically arranged with respect to the seedling box 30, which is convenient for synchronously pulling down the seedling tray, keeping the actions consistent, and improving the stability of the device operation.

[0031] It should be noted that the auxiliary transmission mechanism includes: Two fourth support plates 601 are spaced apart and installed on the throwing seedling frame, and the fourth support plate 601 is located between the first support plate 201 and the second support plate 401; An auxiliary transmission shaft 602 passes through the two fourth support plates 601 and is movably connected to the two fourth support plates 601. A second driven sprocket is assembled in the middle of the auxiliary transmission shaft 602, and is chain-driven with the second main sprocket on the main transmission shaft to drive the auxiliary transmission shaft 602 to rotate.

[0032] It should be noted that the cam transmission mechanism includes: A cam groove 603 is opened on the surface of the fourth support plate 601; A driving connecting rod 604, one end of which is connected to the output shaft of the auxiliary transmission mechanism, and a square groove is opened on the driving connecting rod 604; The slider crank 605 is inserted into the cam groove 603 through the square groove, and the slider crank 605 is restricted in the cam groove 603. In this embodiment, the slider crank 605 is equipped with a roller, and the roller is inserted into the cam groove 603 to reduce the frictional force between the slider crank 605 and the cam groove 603; The second connecting rod 606 is connected to the end of the slider crank 605 away from the cam groove 603, and is used to drive the second connecting rod 606 to reciprocate; The pin shaft 607 is connected to the second connecting rod 606 away from the slider crank 605; The push-pull rod 608 is connected to the pin shaft 607 away from the second connecting rod 606, and is used to connect the drive plate; The axial limit block 609 is installed on the rice throwing frame, and the push-pull rod 608 passes through the axial limit block 609 for axial limit.

[0033] When the secondary transmission mechanism rotates driven by the main transmission shaft, it drives the cam transmission mechanism to work. Specifically, it drives the cam groove 603 to rotate, thereby driving the slider crank 605 and the drive connecting rod 604 to perform cam trajectory motion, acting on the second connecting rod 606. Under the action of the pin shaft 607 and the axial limit block 609, finally, the pin shaft push-pull rod 608 is driven to periodically push and pull the drive plate, completing the operation of ejecting the seedlings.

[0034] It should be noted that the surface of the seedling conveyor belt 10 is provided with a plurality of grids, and the distance between each grid is equal. The pot seedlings can be separated orderly, preventing the seedlings from mixing and disorderly running. At the same time, it can also reduce the rolling of the seedlings after falling, increasing the stability of rice throwing.

[0035] According to the rice throwing device of the present invention, the structure is compact and does not require too many power sources. The main transmission mechanism drives two sets of rice throwing devices to perform stable and orderly rice throwing operations. Specifically, the main transmission mechanism drives the first transmission mechanism to drive the seedling conveyor belt to perform orderly rice throwing, the main transmission mechanism drives the second transmission mechanism to drive the seedling tray hook to intermittently pull down the seedling tray periodically for feeding seedlings, and the main transmission mechanism drives the third transmission mechanism to drive the ejector rod to eject the seedlings in the seedling tray. According to the rice throwing device of the present invention, two-phase male parents can be rice-thrown respectively, and the seedling age difference between the male parents can be flexibly adjusted to meet the agronomic requirements of different varieties of male and female parents for the required sowing difference period. Embodiment 2 As Figures 1 to 8 shown, this embodiment makes further improvements on the basis of Embodiment 1, and provides a rice throwing device, which includes: The throwing seedling frame is installed with a main transmission mechanism. The main transmission mechanism has a main transmission shaft. On the throwing seedling frame, a first connecting plate 102 and a second connecting plate 103 for connecting the conveyor belt drive shaft 101 are installed. The total number of the second connecting plates 103 is two, and they are symmetrically arranged with respect to the seedling conveyor belt 10. Among them, both ends of the first connecting plate 102 are provided with first annular grooves 1020, and the second connecting plate 103 is provided with second annular grooves 1030. The second annular grooves 1030 are equal in size to and correspondingly arranged with the first annular grooves 1020. In this embodiment, the main transmission mechanism includes: A main input sprocket, connected to the output shaft of the drive motor; A main transmission shaft, fixedly connected to the main input sprocket. A plurality of gears are installed on the surface of the main transmission shaft for adapting to drive a plurality of transmission mechanisms; Two groups of throwing seedling mechanisms 1 are installed side by side on the throwing seedling frame. Each group of throwing seedling mechanisms 1 includes: A seedling conveyor belt 10, installed on the throwing seedling frame for receiving seedlings and throwing the potted seedlings after ejection. The seedling conveyor belt 10 includes: A conveyor belt drive shaft 101, installed on the first connecting plate 102 and one of the second connecting plates 103 on the throwing seedling frame. Both ends of the conveyor belt drive shaft 101 are respectively connected with a first bearing; A conveyor belt driven shaft 104, installed on the first connecting plate 102 and the other second connecting plate 103 on the throwing seedling frame. Both ends of the conveyor belt driven shaft 104 are respectively connected with a second bearing. The second bearing is correspondingly embedded in the first annular groove 1020 and the second annular groove 1030, and is adjusted and fixed by a tensioning device to adjust the tension of the seedling conveyor belt 10, reduce the bounce when the seedlings fall, and increase the throwing stability; A first transmission mechanism 20, drivingly connected to the main transmission mechanism and the seedling conveyor belt 10 to drive the seedling conveyor belt 10 to rotate; A seedling box 30, installed on the throwing seedling frame for placing a seedling tray. A seedling taking plate 301 is provided at the bottom of the seedling box 30, and a plurality of seedling taking holes 302 are provided on the seedling taking plate 301; A second transmission mechanism 40, having a seedling tray claw 408 facing the seedling box 30. The second transmission mechanism 40 is drivingly connected to the main transmission mechanism to drive the seedling tray claw 408 to intermittently pull down the seedling tray periodically; A plurality of ejector rods 50 are correspondingly distributed in the seedling taking holes 302. In this embodiment, the number of the ejector rods 50 is 14, and they are installed between the push-pull rods of the third transmission mechanism. This device is more stable and evenly stressed compared with the original mechanism, and is convenient for adapting to the existing seedling trays to improve the throwing efficiency; The third transmission mechanism 60 is used to perform the operation of ejecting the plug seedlings in the seedling tray for seedling picking and driving the empty seedling tray away after the ejecting and seedling picking operation, and includes: A pair of transmission mechanisms, which are in transmission connection with the main transmission shaft; Two cam transmission mechanisms, which are installed on both sides of the auxiliary transmission mechanism and are in transmission connection with the auxiliary transmission mechanism; A driving plate, which is installed at the output part of the cam transmission mechanism and is used to install the ejector rod 50. Through the third transmission mechanism 60, it can be used to intermittently eject the seedlings in the seedling tray.

[0036] It should be noted that the tensioning device includes: Two square grooves 105 are symmetrically opened on the first connecting plate 102. The first connecting plate 102 is provided with a threaded hole to communicate the square groove 105 with the first annular groove 1020 near the square groove 105; Elastic clips are installed in the first annular groove 1020 and the second annular groove 1030, and are respectively connected to the first bearing and the second bearing to drive the first bearing and the second bearing to move towards each other, The adjusting screw 106 is in threaded connection with the threaded hole. By pressing against the first bearing and the second bearing with the adjusting screw, the first bearing and the second bearing are driven to move away from each other, increasing the distance between the bearings and adjusting the tension of the seedling conveyor belt 10. Embodiment 3 A parental synchronous throwing and sowing machine, which includes: A frame; The throwing device as described in the above embodiment is installed on the frame; A ride-on power chassis is installed on the frame and is used to drive the throwing and sowing machine to travel; A lifting device is installed on the ride-on power chassis. Both the ride-on power chassis and the lifting device adopt relevant structures in the prior art and will not be specifically described herein; A sowing device has a sowing machine frame and is installed on the lifting device. The sowing machine frame is provided with a male parent water storage ditch opener. At the bottom end of the sowing machine frame, a female parent sowing ditch opener and a female parent water storage ditch opener are arranged on both sides of the male parent water storage ditch opener respectively and are used for sowing the female parent rice seeds of hybrid rice; A seedling box assembly is installed at the top of the third transmission mechanism of the throwing device.

[0037] It should be noted that, in this embodiment, the driving device of the sowing device is driven by an existing power transmission device, which can be connected to the driving device of the sowing device through the power device of the riding power chassis, and the main transmission shaft and the main driving shaft in the sowing device are connected through a chain transmission, and the sowing device and the seedling throwing device are driven as a whole by the power device of the riding power chassis.

[0038] The synchronous seeding machine for parents according to the present invention has a compact structure and does not require excessive power sources. It drives two groups of seedling throwing devices through the main transmission mechanism to perform stable and orderly seedling throwing operations. It can respectively throw seedlings for two periods of father parents, flexibly adjust the seedling age difference between the father parents, and meet the agronomic needs of the sowing difference period required for parents of different varieties. It realizes the synchronous operation of seedling throwing of father parent seedlings and sowing of female parent bud seeds in hybrid rice seed production, and accurately controls the encounter of the flowering periods of the father parent and the mother parent.

[0039] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0041] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A seedling throwing device, characterized in that: include: The rice seedling throwing machine frame is equipped with a main transmission mechanism and a main transmission shaft; The seedling throwing mechanism (1) comprises: A seedling conveyor belt (10) is installed on the seedling throwing machine frame; A first transmission mechanism (20) is transmission-connected to the main transmission shaft and the rice seedling conveyor belt (10); A seedling box (30) is mounted on the seedling throwing machine frame; A second transmission mechanism (40) is transmission-connected to the main transmission mechanism; a plurality of ejector rods (50); The third transmission mechanism (60) comprises: A secondary transmission mechanism, drivingly connected to the main transmission shaft; A cam transmission mechanism is installed on both sides of the auxiliary transmission mechanism and is transmission-connected with the auxiliary transmission mechanism; A drive plate is mounted on the output portion of the cam transmission mechanism and is connected to the push rod (50).

2. The seedling throwing device according to claim 1, characterized in that: The main transmission mechanism comprises: Main input sprocket; A main transmission shaft is connected with the main input sprocket.

3. The seedling throwing device according to claim 1, characterized in that: The rice seedling conveyor belt (10) has a conveyor belt drive shaft (101); The first transmission mechanism (20) comprises: A first support plate (201) is mounted on the seedling throwing machine frame; The first transmission shaft (202) is movably connected to the two first support plates (201); the first transmission shaft (202) and the main transmission shaft are matched via gears; the first transmission shaft (202) and the conveyor belt drive shaft (101) are matched via helical gears for transmission.

4. The seedling throwing device according to claim 1, characterized in that: The second transmission mechanism (40) comprises: A second support plate (401) is installed on the seedling throwing machine frame at intervals; A third support plate (402) is arranged in front and behind of the second support plate (401); Two sets of transmission units, each transmission unit is mounted on the third support plate (402) and is transmitted to the main transmission shaft sprocket.

5. The seedling throwing device according to claim 4, characterized in that: Each transmission unit includes: A Z-shaped shaft (403) passes through the third support plate (402) and is transmitted to the main transmission shaft sprocket; A first connecting rod (404) connected to the Z-shaped shaft (403); A slide rail (405) mounted on the third support plate (402); A sliding block (406) is mounted on the sliding rail (405); A first connecting shaft (407) connected to the sliding block (406); A seedling tray hook (408) connected to the first connecting shaft (407); A torsion spring (409) is sleeved on the first connecting shaft (407).

6. The seedling throwing device according to claim 5, characterized in that: The seedling tray hooks (408) are symmetrically arranged with respect to the seedling box (30).

7. The seedling throwing device according to claim 1, characterized in that: The auxiliary transmission mechanism comprises: A fourth support plate (601) is installed on the seedling throwing machine frame at intervals; The secondary transmission shaft (602) is movably connected to the two fourth support plates (601), and the secondary transmission shaft (602) is driven by the main transmission shaft sprocket.

8. The seedling throwing device according to claim 1, characterized in that: The cam transmission mechanism comprises: A cam groove (603) is formed on the surface of the fourth supporting plate (601); A driving connecting rod (604) connected to the output shaft of the auxiliary transmission mechanism, wherein the driving connecting rod (604) is provided with a square groove; A slider crank (605) passes through the square slot and is embedded in the cam slot (603); A second connecting rod (606) connected to the end of the slider crank (605); A pin shaft (607) connected to the second connecting rod (606); A push-pull rod (608) connected to the pin shaft (607); An axial limit block (609) is mounted on the seedling throwing machine frame, and the push-pull rod (608) passes through the axial limit block (609) for axial limit.

9. The seedling throwing device according to claim 3, characterized in that: The surface of the seedling conveyor belt (10) is provided with a plurality of grids, and the spacing between each grid is equal.

10. A synchronous seeding machine for parents, characterized in that: include: frame; The seedling throwing device according to any one of claims 1 to 9, mounted on the frame; A riding power chassis, mounted on a frame; A lifting device, mounted on the riding power chassis; A sowing device, comprising a sowing machine frame, mounted on the lifting device, the sowing machine frame being provided with a male parent water storage ditch opener, a female parent sowing ditch opener and a female parent water storage ditch opener being provided at the bottom end of the sowing machine frame, and being respectively arranged on both sides of the male parent water storage ditch opener; The seedling box assembly is installed on the top of the third transmission mechanism of the seedling throwing device.

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