High-frequency seedling separating mechanism for rice transplanting

Abstract

The invention discloses a rice transplanting high-frequency seedling separating mechanism which comprises a base, an ejector rod and a driving mechanism, the ejector rod is slidably mounted relative to the base, the driving mechanism drives the ejector rod to slide, and the driving mechanism comprises a driving motor; the base is provided with a plurality of ejector rods which are arranged around the circumference of the driving motor in an array manner; the driving mechanism further comprises a reversing frame, and the driving motor is in driving connection with the reversing frame through a first eccentric shaft; a second eccentric shaft is connected between the reversing frame and the base, and the eccentric distances of the first eccentric shaft and the second eccentric shaft are consistent; and each ejector rod is connected with the reversing frame through an independent connecting rod. According to the seedling separating device, the center shaft of the driving motor rotates by one circle, all the ejector rods can sequentially complete one-time seedling separating action through the reversing frame, the seedling separating frequency is high, and the high-frequency seedling supplying requirement during seedling throwing operation of the unmanned aerial vehicle can be met. The high-frequency seedling separating mechanism is compact in structure and light in weight, and endurance of the unmanned aerial vehicle is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of seedling separation mechanisms for agricultural seedling planting, and in particular to a high-frequency seedling separation mechanism for rice transplanting. Background Art

[0002] With the development of agricultural modernization, the application of seedling transplanting technology in the agricultural field is becoming more and more extensive, especially in the planting process of crops such as rice. UAV seedling transplanting technology and machine transplanting technology have gradually become one of the key means to improve work efficiency. However, the existing transplanting equipment on the market generally has the problem of low seedling efficiency, which is difficult to meet the needs of large-scale agricultural production for efficient and fast operation. Traditional UAV seedling throwing devices usually rely on multiple independent seedling accommodating grooves and corresponding seedling separation mechanisms to achieve continuous seedling separation, such as the technology shown in patents with application numbers 2023108380296 and 2023108377236, which not only increases the overall volume and weight of the equipment, but also greatly increases the cost. In addition, since each seedling separation mechanism needs to be driven separately, the coordination of the entire system is poor, and it is easy to jam, which affects the accuracy and efficiency of seedling throwing. Therefore, how to design a rice transplanting seedling separation mechanism that can achieve high-frequency seedling separation and has a compact structure and light weight has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a high-frequency rice transplanting seedling separation mechanism which has a high seedling separation frequency and can meet the high-speed seedling separation requirements for rapid transplanting and is lightweight.

[0004] Technical solution: To achieve the above-mentioned purpose, the rice transplanting high-frequency seedling separation mechanism of the present invention comprises a base, a top rod slidably mounted relative to the base, and a driving mechanism for driving the top rod to slide, wherein the driving mechanism comprises a driving motor;

[0005] The base has a plurality of push rods arranged in a circular array around the drive motor, and the total number of the push rods is N, and the sliding directions of the push rods are not parallel to each other. Preferably, the sliding axes of all the push rods are perpendicular to the central axis of the drive motor;

[0006] The driving mechanism further comprises a slewing frame, and the driving motor is drivingly connected to the slewing frame via a first eccentric shaft;

[0007] A second eccentric shaft is connected between the rotating frame and the base, and the eccentric distances of the first eccentric shaft and the second eccentric shaft are consistent; the eccentric distance is also the maximum stroke of the reciprocating sliding of the ejector rod;

[0008] Each of the push rods is connected to the rotating frame via an independent connecting rod, and the two ends of each connecting rod are rotatably connected to the rotating frame and the corresponding push rod respectively.

[0009] By adopting the above structure, when the central axis of the driving motor rotates, it can drive the rotating frame to rotate around the central axis of the driving motor, and the rotation radius is equal to the eccentricity between the first eccentric axis and the second eccentric axis. The second eccentric axis is used to maintain the rotation stability of the rotating frame; when the rotating frame rotates, all the top rods can be driven to perform translational movement at the same time through multiple top rods. Since the circumferential angles of each top rod relative to the driving motor are different, the sliding displacements of all the top rods are different, and each top rod is in a different seedling separation stage.

[0010] Furthermore, the rotating frame includes a circular main body portion, and also includes four connecting ears arranged in a circular array around the main body portion; the center of the main body portion is connected to the central axis of the drive motor through the first eccentric shaft; and each connecting ear portion is connected to the base through a separate second eccentric shaft.

[0011] Furthermore, an annular groove is formed on the main body, and one end of all the connecting rods is embedded in the annular groove and connected to the main body via a pin.

[0012] The above structure can ensure that the driving mechanism operates smoothly and all the top rods can perform stable telescopic movements to ensure the stability of seedling separation.

[0013] Furthermore, the base is a polygonal shell structure consisting of a top plate and multiple side walls, and the rotating frame and the connecting rod are both installed inside the base; the outer side of the driving motor is connected to the top plate of the base and is located on the outer side of the base; the second eccentric shaft is connected to the top plate; the number of the side walls is consistent with the number of the top rods, and each side wall has a through hole for the top rod to extend and retract.

[0014] The base is an integrally formed shell that can protect its internal structure. A cover plate can be fixed on the lower side of the base to prevent impurities from entering and jamming its internal structure.

[0015] Furthermore, a slide rail corresponding to each of the push rods is installed on the inner side of the top plate of the base, and a slider that slides with the corresponding slide rail is fixed on the push rod. In this way, the smoothness of the push rod movement can be ensured and jamming can be avoided.

[0016] Furthermore, the driving motor is fixed to the outer side of the top plate of the base through a connecting seat, and the connecting seat has a first connecting flange connected to the driving motor and a second connecting flange connected to the base.

[0017] In actual use, the high-frequency seedling separation mechanism is used in conjunction with a cage-shaped seedling rack, which has a plurality of vertical slides arranged in a circular array, and the lower side of the seedling rack has a seedling outlet corresponding to each vertical slide. The substrate blocks at the roots of the seedlings or the seedling pots filled with the substrate can be arranged in the vertical slides, and the leaves of the seedlings extend out of the vertical slides. The number of the vertical slides is equal to the number of the top rods and they are installed one by one. The top rods can extend into the seedling outlet from the inside to achieve the separation of the seedlings one by one.

[0018] Beneficial effects: The high-frequency rice transplanting seedling separation mechanism of the present invention has the following beneficial effects:

[0019] (1) When the central axis of the driving motor rotates one circle, all the top rods can complete the seedling pushing action in sequence through the rotating frame. The seedling pushing frequency is extremely high, which can meet the high-frequency seedling supply needs of drone seedling throwing and other operations. In addition, the high-frequency seedling separation mechanism has a compact structure, and all the top rods are driven by the same driving motor. Therefore, the weight of the structure is greatly reduced, which is beneficial to the endurance of the drone and can reduce costs.

[0020] (2) Through the special design of the structural connections of each link, the smooth operation of all cooperation is guaranteed, and the operation failure of the whole structure caused by the jamming of one part of the cooperation is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view structural diagram of a high-frequency seedling separation mechanism for rice transplanting;

[0022] Figure 2 It is a three-dimensional structural diagram of a high-frequency seedling separation mechanism for rice transplanting;

[0023] Figure 3 This is a top-down structural diagram of a high-frequency seedling separation mechanism for rice transplanting;

[0024] Figure 4 It is the connection structure diagram of the slewing frame and the base;

[0025] Figure 5 It is a combined structural diagram of the high-frequency seedling separation mechanism and the seedling rack.

[0026] In the figure: 1-base; 1a-through hole; 2-top rod; 3-driving motor; 4-rotating frame; 41-main body; 41a-annular groove; 42-connecting ear; 5-first eccentric shaft; 6-second eccentric shaft; 7-connecting rod; 8-slide rail; 9-sliding block; 10-connecting seat; A-seedling rack; A1-vertical slide; A2-seedling outlet. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1The rice transplanting high-frequency seedling separation mechanism shown comprises a base 1, a top rod 2 slidably mounted relative to the base 1, and a driving mechanism for driving the top rod 2 to slide, wherein the driving mechanism comprises a driving motor 3;

[0029] The base 1 has a plurality of push rods 2 arranged in a circular array around the drive motor 3. Assuming that the total number of the push rods 2 is N, the sliding directions of the push rods 2 are not parallel to each other. Preferably, the sliding axes of all the push rods 2 are perpendicular to the central axis of the drive motor 3. In this embodiment, N=16.

[0030] The driving mechanism further comprises a rotating frame 4, and the driving motor 3 is drivingly connected to the rotating frame 4 via a first eccentric shaft 5;

[0031] A second eccentric shaft 6 is connected between the rotating frame 4 and the base 1, and the eccentric distances of the first eccentric shaft 5 and the second eccentric shaft 6 are consistent; the eccentric distance is also the maximum stroke of the reciprocating sliding of the push rod 2;

[0032] Each of the push rods 2 is connected to the rotating frame 4 via an independent connecting rod 7 , and both ends of each connecting rod 7 are rotatably connected to the rotating frame 4 and the corresponding push rod 2 .

[0033] With the above structure, when the central axis of the driving motor 3 rotates, the rotating frame 4 can be driven to rotate around the central axis of the driving motor 3, and the rotation radius is equal to the eccentricity of the first eccentric shaft 5 and the second eccentric shaft 6. The second eccentric shaft 6 is used to maintain the rotation stability of the rotating frame 4; when the rotating frame 4 rotates, it can simultaneously drive all the top rods 2 to perform translational motion through multiple top rods 2. Since the circumferential angles of each top rod 2 relative to the driving motor 3 are different, the sliding displacements of all the top rods 2 are different, and each top rod 2 is in a different seedling separation stage. When the central axis of the driving motor 3 rotates one circle, all the top rods 2 can complete a seedling separation action in sequence through the rotating frame 4. The seedling separation frequency is extremely high, which can meet the high-frequency seedling supply needs of the drone during the seedling throwing operation. In addition, the above-mentioned high-frequency seedling separation mechanism has a compact structure, and all the top rods 2 are driven and operated by the same driving motor 3. Therefore, the structural weight is greatly reduced, which is beneficial to the endurance of the drone and can reduce costs.

[0034] Preferably, the rotating frame 4 includes a circular main body 41, and also includes four connecting ears 42 arranged in a circular array around the main body 41; the center of the main body 41 is connected to the central axis of the driving motor 3 through the first eccentric shaft 5; each connecting ear 42 is connected to the base 1 through a separate second eccentric shaft 6.

[0035] Preferably, an annular groove 41 a is formed on the main body 41 , and one end of all the connecting rods 7 is embedded in the annular groove 41 a and connected to the main body 41 via a pin.

[0036] The above structure can ensure that the driving mechanism operates smoothly and all the top rods 2 can perform stable telescopic movements to ensure the stability of seedling separation.

[0037] Preferably, the base 1 is a polygonal shell structure consisting of a top plate and multiple side walls, the rotating frame 4 and the connecting rod 7 are both installed inside the base 1; the outer side of the driving motor 3 is connected to the top plate of the base 1 and is located on the outer side of the base 1; the second eccentric shaft 6 is connected to the top plate; the number of the side walls is consistent with the number of the top rod 2, and each side wall has a through hole 1a for the top rod 2 to extend and retract.

[0038] The base 1 is an integrally formed shell that can protect its internal structure. A cover plate can be fixed on the lower side of the base 1 to prevent impurities from entering and jamming its internal structure.

[0039] Preferably, a slide rail 8 corresponding to each of the push rods 2 is installed on the inner side of the top plate of the base 1, and a slider 9 is fixed on the push rod 2 to slide with the corresponding slide rail 8. In this way, the smoothness of the movement of the push rod 2 can be ensured to avoid jamming.

[0040] In the above structure, the structural connection of each link is specially designed to ensure the smooth operation of all cooperation and prevent the operation failure of the whole structure caused by the jamming of a part of cooperation.

[0041] Preferably, the driving motor 3 is fixed to the outer side of the top plate of the base 1 through a connecting seat 10 , and the connecting seat 10 has a first connecting flange connected to the driving motor 3 and a second connecting flange connected to the base 1 .

[0042] In actual use, the high-frequency seedling separation mechanism is used in conjunction with a cage-shaped seedling rack A. The seedling rack A has a plurality of vertical slides A1 arranged in a circular array, and the lower side of the seedling rack A has a seedling outlet A2 set corresponding to each vertical slide A1. The substrate blocks at the roots of the seedlings or the seedling pots filled with the substrate can be arranged in the vertical slides A1, and the leaves of the seedlings extend out of the vertical slides A1. The high-frequency seedling separation mechanism is located on the lower side of the seedling rack A and between all the vertical slides A1. The number of the vertical slides A1 is equal to the number of the top rods 2 and is installed one by one. The top rods 2 can extend into the seedling outlet A2 from the inside to achieve the separation of the seedlings one by one.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-frequency rice seedling transplanting mechanism, comprising a base (1), a top rod (2) slidably mounted relative to the base (1), and a driving mechanism for driving the top rod (2) to slide, wherein the driving mechanism comprises a driving motor (3); Features: The base (1) has a plurality of push rods (2) arranged in a circular array around the drive motor (3); The driving mechanism further comprises a rotating frame (4), and the driving motor (3) is drivingly connected to the rotating frame (4) via a first eccentric shaft (5); A second eccentric shaft (6) is connected between the rotating frame (4) and the base (1), and the eccentric distances of the first eccentric shaft (5) and the second eccentric shaft (6) are consistent; Each of the top rods (2) is connected to the rotating frame (4) via an independent connecting rod (7).

2. The high-frequency rice seedling separation mechanism according to claim 1, characterized in that: The rotating frame (4) comprises a circular main body (41), and also comprises four connecting ears (42) arranged in a circular array around the main body (41); the center of the main body (41) is connected to the central axis of the driving motor (3) via the first eccentric shaft (5); and each connecting ear (42) is connected to the base (1) via a separate second eccentric shaft (6).

3. The high-frequency rice seedling separation mechanism according to claim 2, characterized in that: An annular groove (41a) is formed on the main body (41), and one end of each of the connecting rods (7) is embedded in the annular groove (41a) and connected to the main body (41) via a pin shaft.

4. The high-frequency rice seedling separation mechanism according to claim 1, characterized in that: The base (1) is a polygonal shell structure consisting of a top plate and a plurality of side walls, and the rotating frame (4) and the connecting rod (7) are both installed inside the base (1); the number of the side walls is consistent with the number of the top rods (2), and each side wall has a through hole for the top rod (2) to be retracted.

5. The high-frequency rice seedling separation mechanism according to claim 4, characterized in that: A slide rail (8) corresponding to each of the push rods (2) is installed on the inner side of the top plate of the base (1), and a slider (9) slidably matched with the corresponding slide rail (8) is fixed on the push rod (2).

6. The high-frequency rice seedling separation mechanism according to claim 4, characterized in that: The drive motor (3) is fixed to the outer side of the top plate of the base (1) via a connecting seat (10); the connecting seat (10) has a first connecting flange connected to the drive motor (3) and a second connecting flange connected to the base (1).

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