Seedling supply device of rapeseed transplanter

Abstract

The invention discloses a seedling supply device for a rapeseed transplanter, which is used to supply rapeseeds to a transplanting mechanism. The rapeseeds are connected in series by strips to form a series body. The seedling supply device includes a pushing mechanism and a cutting mechanism. The pushing mechanism includes a pushing unit for pushing the rapeseeds in the series body to a seedling picking position in sequence. The cutting mechanism includes a cutting knife for cutting off the connection between the rapeseeds at the seedling picking position and the adjacent rapeseeds. The seedling supply device for a rapeseed transplanter of the invention connects the rapeseeds in series by strips to form a series body, and in the subsequent transplanting process, the series body is pushed and cut at a fixed distance by the pushing mechanism and the cutting mechanism, so that the rapeseeds can be supplied to the transplanting mechanism in sequence, and the planting row spacing is adjustable. The operation frequency of the transplanting mechanism can determine the planting row spacing. The seedling supply device of the invention does not need to provide a tall and long seedling rack, and the overall structure is compact. It will not affect the center of gravity of the machine tool during operation, and the machine tool equipped with the seedling supply device has high stability.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a seedling supply device of a rapeseed transplanter. Background Art

[0002] Rapeseed is an important agricultural crop, and its planting scale is very large, so it is particularly necessary to mechanize its planting. Planting rapeseed by transplanting can effectively improve the planting efficiency of rapeseed and ensure the planting effect. The applicant's prior application CN110393045A discloses a transplanting combined operation machine. In this patent, a transplanting method based on a seedling rack and a transplanting mechanism is adopted. During operation, a seedling blanket is placed on the seedling rack, and the seedling rack moves left and right, so that the transplanting mechanism separates the rapeseed seedlings on the seedling blanket in sequence and plants them into the soil. In this scheme, on the one hand, the seedling rack structure is very large, and the transportation and storage of the whole machine are relatively difficult. In addition, the left and right movement of the seedling rack requires additional movement space, so that the machine needs a wider lateral space than the machine itself when operating. On the other hand, the left and right movement of the seedling rack with the seedling blanket will cause the overall center of the machine to change continuously, and the stability is poor.

[0003] Patent CN204810941U discloses a fully automatic seedling supply device for a seedling transplanter, in which plants are cultivated in a seedling pot to form a chain, and the seedling pots are intermittently driven forward by a motor-driven synchronous conveyor belt of a seedling pot disc and cut and placed through a disc to realize seedling pot supply. In this scheme, the cut seedling pots are generally directly put into the land, and the seedling supply frequency is driven by a motor, which makes it difficult to ensure the plant spacing and planting quality. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a seedling supply device for a rapeseed transplanter with a compact structure, small size, controllable plant spacing and good planting quality.

[0005] Technical solution: To achieve the above-mentioned purpose, the seedling supply device of the rapeseed transplanter of the present invention is used to supply rapeseed seedlings to the transplanting mechanism, and the rapeseed seedlings are connected in series by strips to form a series body, and the seedling supply device includes a pushing mechanism and a cutting mechanism; the pushing mechanism includes a pushing unit for pushing the rapeseed seedlings in the series body to the seedling picking position in sequence; the cutting mechanism includes a cutting knife for cutting off the connection between the rapeseed seedlings at the seedling picking position and the adjacent rapeseed seedlings;

[0006] The transplanting mechanism, the pushing mechanism and the cutting mechanism establish a linkage relationship through a linkage mechanism.

[0007] Furthermore, the series body also includes a seedling raising pot, and the strip body connects the seedling raising pot;

[0008] The cutting mechanism is used to cut off the strip-shaped body between two adjacent seedling raising pots.

[0009] Furthermore, the transplanting mechanism, pushing mechanism and cutting mechanism respectively have a first access unit, a second access unit and a third access unit for accessing power, at least one of the three access units is connected to a power source to obtain power, and the access unit that is not connected to the power source to access power accesses power from other access units.

[0010] Furthermore, the pushing unit is driven by the first driving mechanism to operate along a preset trajectory or according to a preset operating speed rule.

[0011] Furthermore, the first driving mechanism is a gap motion mechanism or a non-circular gear set arranged between the second access unit and the pushing unit.

[0012] Furthermore, the preset trajectory comprises a push section, a return section, and a first transition section and a second transition section respectively connecting the two ends of the push section and the return section.

[0013] Furthermore, the cutting knife is driven by the second driving mechanism to operate along a preset trajectory or according to a preset operating speed rule.

[0014] Furthermore, the second driving mechanism is a gap motion mechanism or a non-circular gear set arranged between the third access unit and the cutting knife.

[0015] Furthermore, the cutting knife can move towards and away from the cutting position.

[0016] Furthermore, it also includes a channel for the serial body to move within it, and the seedling taking position is located at the rear end of the channel.

[0017] Beneficial effects: The seedling supply device of the rapeseed transplanter of the present invention can advance and cut the series body at a fixed distance by linking the propulsion mechanism and the cutting mechanism with the transplanting mechanism, and supply the rapeseed seedlings to the transplanting mechanism in sequence. The planting row spacing is adjustable, and the operating frequency of the transplanting mechanism can determine the planting row spacing, and the operation stability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view of the seedling supply device of the rapeseed transplanter in Example 1;

[0019] Figure 2 It is a top view of the seedling supply device of the rapeseed transplanter in Example 1;

[0020] Figure 3 It is a side view of the seedling supply device of the rapeseed transplanter in Example 2;

[0021] Figure 4 This is a structural diagram of a pushing mechanism in Example 2;

[0022] Figure 5 It is a structural diagram of a cutting mechanism in Example 2;

[0023] Figure 6 This is a structural diagram of the second pushing mechanism in Example 2;

[0024] Figure 7 This is a structural diagram of the third pushing mechanism in Example 2;

[0025] Figure 8 It is a structural diagram of the pushing mechanism in Example 3;

[0026] Fig. 9 is a structural diagram of the cutting mechanism in Example 3;

[0027] Fig.10 It is a combined diagram of the cutting mechanism and the channel in Example 4;

[0028] Fig.11 It is a schematic diagram of the positions of the cutting mechanism and the channel in Example 5;

[0029] Fig.12 is a first state diagram of the cutting mechanism and the channel in Example 5;

[0030] Fig.13 is a second state diagram of the cutting mechanism and the channel in Example 5;

[0031] Fig.14 This is the third state diagram of the cutting mechanism and the channel in Example 5.

[0032] In the figure: A-transplanting mechanism; A1-first access unit; A2-seedling needle; A3-rotating seat; a-serial body; a1-strip body; a2-seedling pot; b-seedling position; c-groove mechanism; d-ratchet intermittent mechanism; d1-crank swing guide rod mechanism; d11-rocker; d12-crank; d2-first pawl; d3-mechanism seat; d4-ratchet; d5-second pawl; s-planting track; 1-pushing mechanism; 11-pushing unit; 12-second access unit; 13-first rotating seat; 14-first non-circular gear set; 15-vertical guide unit ;16-parallel guide unit;17-rotating rod;18-sliding sleeve;19-first spring;2-cutting mechanism;21-cutting knife;22-third access unit;23-second rotating seat;24-second non-circular gear set;251-fixed seat;252-sliding seat;253-connecting rod;254-pushing rod;255-holding spring;256-sliding push rod;257-rotating member;3-linkage mechanism;31-synchronous belt mechanism;32-bevel gear mechanism;4-accommodating mechanism;41-slot;42-elastic mechanism;43-active opening mechanism;5-channel. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] like Figure 1-2 The seedling supply device of the rapeseed transplanter shown is used to supply rapeseed seedlings to the transplanting mechanism A. The rapeseed seedlings are connected in series by strips a1 to form a series body a. The rapeseed seedlings can be directly connected in series by the strips a1, but in a preferred embodiment, the series body a also includes a seedling pot a2, the rapeseed seedlings are placed in the seedling pot a2, the strips a1 connect the seedling pots a2, and the seedling pots a2 are filled with soil or other culture media.

[0035] Here, the seedling pot a2 and the strip a1 are made of degradable materials, such as special paper. When the transplanting mechanism A takes the seedlings and transplants them, the seedling pot a2 loaded with the rapeseeds is transplanted together, and the seedling pot a2 is buried in the soil, which can effectively reduce the seedling taking steps, and no residues will be produced after transplanting, and there will be no trouble of post-processing the residues. After the rapeseeds are buried in the soil, the seedling pot a2 is degraded in the soil, which will not affect the subsequent growth of the rapeseed root system.

[0036] The transplanting mechanism A includes a rotating seat body A3 and a seedling picking needle A2 installed at the end of the rotating seat body A3. The seedling picking needle A2 moves along a predetermined planting trajectory s to achieve the operation of picking up seedlings and transplanting seedlings into the soil. One seedling picking needle A2 can be provided on the rotating seat body A3, preferably two seedling picking needles A2 are provided, so that the transplanting mechanism A can implement two seedling picking and planting processes within one rotation cycle of the rotating seat body A3. The specific structure of the transplanting mechanism A can refer to the transplanting mechanism of the rice transplanter, and will not be described in detail here.

[0037] Based on this, the seedling supply device includes a pushing mechanism 1 and a cutting mechanism 2. The pushing mechanism 1 includes a pushing unit 11 for pushing the rapeseeds in the serial body a to the seedling taking position b in sequence, and the transplanting mechanism obtains the rapeseeds from the seedling taking position b; the cutting mechanism 2 includes a cutting knife 21 for cutting off the connection between the rapeseed at the seedling taking position b and its adjacent rapeseed, that is, for cutting off the strip a1 between two adjacent seedling raising pots a2.

[0038] In this structure, the rapeseed seedlings are connected in series into a series body through the strip a1, and when supplying the seedlings, the rapeseed seedlings in the strip a1 are individually cut out to be supplied to the transplanting mechanism A. The transplanting mechanism A can determine the transplanting spacing according to its own operating frequency. In this way, the spacing between the rapeseed seedlings is not limited by the spacing between them on the series body a, and the transplanting parameters can be adjusted as needed, which greatly increases the flexibility.

[0039] In addition, compared with the transplanting scheme of moving the seedling rack back and forth, the above structure is not only stable in operation but also compact in size, which can make the machine small and lightweight.

[0040] Preferably, the transplanting mechanism A, the pushing mechanism 1 and the cutting mechanism 2 establish a linkage relationship through a linkage mechanism 3. By setting up the linkage mechanism 3 to establish a linkage relationship among the three, a stable operation rhythm among the three can be constructed. Compared with using an actuator to control the three separately and using a controller to make the three move in coordination, establishing a linkage relationship among the three through the linkage mechanism 3 is obviously less costly, more convenient to implement, and more stable in operation.

[0041] Preferably, the transplanting mechanism A, the pushing mechanism 1 and the cutting mechanism 2 respectively have a first access unit A1, a second access unit 12 and a third access unit 22 for accessing power. In this embodiment, the three access units are all rotating shafts. At least one of the three access units is connected to the power source B to obtain power. The access unit that is not connected to the power source B to access power accesses power from other access units. The above-mentioned linkage mechanism 3 includes a connection mechanism between the power source B and the access unit, and also includes a connection mechanism between the access units.

[0042] Preferably, the pushing unit 11 is driven by the first driving mechanism 13 to run along a preset trajectory or according to a preset operating speed rule. Here, the movement according to the preset operating speed rule may be an intermittent motion, that is, the pushing unit 11 moves for a while and then remains stationary relative to the machine base. At this time, the first driving mechanism 13 is an intermittent motion mechanism. In one embodiment, the pushing unit 11 is wheel-shaped, with pushing teeth 11a around it. The first intermittent mechanism 13 cooperates with the transplanting mechanism A to operate. After each rapeseed seedling is taken away by the transplanting mechanism A, the first intermittent mechanism 13 causes the pushing unit 11 to rotate a preset angle, and the pushing unit 11 pushes the current frontmost seedling pot a2 to the seedling removal position b.

[0043] Movement according to a preset operating speed rule can also be an asymmetric continuous movement, that is, the movement of the pushing unit 11 can be divided into two stages, one of which is the propulsion section and the other is the return section, wherein the average speed of the pushing unit 11 in the return section is less than its average speed in the propulsion section.

[0044] The above-mentioned preset trajectory is a planned trajectory. For example, the preset trajectory can be a circular trajectory or a trajectory of other shapes. The preset trajectory enables the pushing unit 11 to maintain a contact state during the process of pushing the seedling pot a2 located at the adjacent position of the seedling retrieval position b to the seedling retrieval position b. After the seedling pot a2 reaches the seedling retrieval position b, it separates from the seedling pot a2, and in the process of continuing to move along the preset trajectory, the pushing unit 11 can return to the adjacent position of the seedling retrieval position b and contact the seedling pot a2 at that position.

[0045] Preferably, the cutting knife 21 is driven by the second driving mechanism 23 to run along a preset trajectory or at a preset running speed.

[0046] Similar to the motion law of the pushing unit 11, the cutter 21 can perform intermittent motion or asymmetric continuous motion. The cutter 21 cuts the strip a1 before or during the transplanting mechanism to separate the seedling pot a2 on the seedling position b. Preferably, when the transplanting mechanism starts to act on the seedling pot a2 or the rapeseed or the soil in the seedling pot a2, the cutter 21 acts on the strip a1 and quickly cuts off the strip a1.

[0047] Preferably, a accommodating mechanism 4 is provided at the seedling removal position b, and the accommodating mechanism 4 is a vertically through structure, and a notch 41 penetrating vertically is provided on the rear side thereof.

[0048] Preferably, the accommodating mechanism 4 includes two half bodies 41 that can be opened relative to each other, and the two half bodies 41 are connected by an elastic mechanism 42 or an active opening mechanism 43 .

[0049] Preferably, it also includes a channel 5 for the serial body a to move therein, and the seedling taking position b is located at the rear end of the channel 5.

[0050] Example 1

[0051] like Figure 1 and Figure 2 As shown, in this embodiment, the pushing mechanism 1 includes a first rotating seat 13, and the pushing unit 11 is installed on the first rotating seat 13; the cutting mechanism 2 includes a second rotating seat 23, and all the cutting knives 21 are fixed on the second rotating seat 23; the number of the seedling needle A2, the pushing unit 11 and the cutting knife 21 is equal. In the illustrated embodiment, the number of the three is two respectively, and the rotating seat body A3, the first rotating seat 13, and the second rotating seat 23 rotate synchronously at the same angular speed. In this way, the seedling needle A2, the pushing unit 11 and the cutting knife 21 can act on their respective objects at the same frequency.

[0052] In order to realize synchronous and equal-angle operation of the rotating seat body A3, the first rotating seat 13, and the second rotating seat 23, the second access unit 12 connected to the first rotating seat 13 and the first access unit A1 connected to the rotating seat body A3 are connected via a synchronous mechanism such as a synchronous belt mechanism 31, and a transmission relationship is established between the third access unit 22 connected to the second rotating seat 23 and the first access unit A1 via a bevel gear mechanism 32.

[0053] The specific process is as follows: s1) the pushing unit 11 pushes the seedling pot a2 at the end to the seedling taking position b, and then the pushing unit 11 is separated from the seedling pot a2; s2) the cutting knife 21 cuts off the strip a1 at the rear side of the seedling pot a2 at the end; s3) the seedling taking needle A2 is inserted into the seedling pot a2, and the seedling pot a2 is moved into the soil. The above process can be performed in the order of s1), s2), and s3). It is also possible that s1) is executed first and s2) occurs during the execution of s3), that is, after the seedling needle A2 is inserted into the seedling pot a2, the cutting knife 21 cuts off the strip a1 on the rear side of the seedling pot a2 at the end. The advantage of this process compared to executing the plan in the order of s1), s2), and s3) is that when executing in the order of s1), s2), and s3), the seedling pot a2 that is cut out first may fall or change its posture due to the bumping of the machine before the seedling needle A2 takes the seedlings, while s2) occurring during the execution of s3) can solve this problem, and thereafter the seedling needle A2 continues to transplant the independent seedling pot a2 into the soil.

[0054] Example 2

[0055] like Figure 3 As shown, in this embodiment, similar to Embodiment 1, the pushing unit 11 includes a first rotating seat 13 and the pushing unit 11 installed on the first rotating seat 13; the cutting mechanism 2 includes a second rotating seat 23, and all the cutting knives 21 are fixed on the second rotating seat 23; the difference is that the number of the pushing unit 11, the cutting knives 21 and the seedling needle A2 is not necessarily equal, and at least one of the first rotating seat 13 and the second rotating seat 23 is driven and operated by an intermittent motion mechanism, and the intermittent motion mechanism enables the pushing unit 11 or the cutting knife 21 to perform intermittent motion, that is, to operate according to a preset operating speed rule.

[0056] The intermittent motion mechanism can be Figure 4 , 5 The grooved wheel mechanism c shown or as Figure 6 , 7 The ratchet intermittent mechanism d shown, as Figure 6The ratchet intermittent mechanism d shown includes a mechanism base d3, on which a crank swing guide rod mechanism d1 and a ratchet d4 are mounted, a first ratchet d2 is mounted on a rocker d11 of the crank swing guide rod mechanism d1, and a second ratchet d5 is also mounted on the mechanism base d3, and a first rotating seat 13 or a second rotating seat 23 is fixedly mounted relative to the ratchet d4. The crank d12 of the crank swing guide rod mechanism d1 is driven to operate by the second access unit 12 or the third access unit 22, so that the second access unit 12 or the third access unit 22 rotates continuously, so that the first rotating seat 13 or the second rotating seat 23 can perform intermittent motion, and the rotation speed relationship and initial phase of the first access unit A1, the second access unit 12, and the third access unit 22 are adjusted, so that the execution order of s1), s2), and s3) in the above embodiment 1 can be realized, or the process in which s1) is executed first and s2) occurs after s3) is executed.

[0057] The crank swing guide rod mechanism d1 can also be replaced by other connecting rod mechanisms, such as Figure 7 In the crank-rocker mechanism shown, the first pawl d2 is mounted on its rocker, and the crank of the crank-rocker mechanism is connected to the access unit (the second access unit 12 or the third access unit 22).

[0058] Example 3

[0059] As a substitute for the pushing mechanism 1 in Example 1 or Example 2, in this embodiment, the pushing unit 11 performs asymmetric continuous motion. One implementation is: the pushing mechanism 1 includes a first rotating seat 13 and the pushing unit 11 installed on the first rotating seat 13, and the second access unit 12 transmits power to the first rotating seat 13 through the first non-circular gear set 14. Figure 8 As shown, the first non-circular gear set 14 includes two non-circular gears meshing with each other, and the two non-circular gears are fixedly installed relative to the second access unit 12 and the first rotating seat 13 respectively. In this way, the pushing unit 11 can move quickly in the pushing section and slowly in the return section. The pushing mechanism 1 can quickly push the seedling pot a2 into place after each transplanting mechanism A takes the seedlings.

[0060] Similarly, as a substitute for the cutting mechanism 2 in Example 1 or Example 2, the cutting mechanism 2 includes a second rotating seat 23 and a cutting knife 21 mounted on the second rotating seat 23, and the third access unit 22 transmits power to the second rotating seat 23 through the second non-circular gear set 24, such as Fig. 9 As shown, the second non-circular gear set 24 includes two non-circular gears meshing with each other, and the two non-circular gears are fixedly installed relative to the third access unit 22 and the second rotating seat 23 respectively. In this way, the cutting knife 21 can move quickly in the pushing section and slowly in the return section. The cutting mechanism 2 can quickly cut off the strip a1 each time the cutting operation is performed.

[0061] Example 4

[0062] As a substitute for the pushing mechanism 1 in Embodiment 1 or Embodiment 2, in this embodiment, the pushing unit 11 moves along a preset trajectory. Fig.10 In the embodiment shown, the push unit 11 moves along a square track, so that when the push unit 11 moves along the upper side (pushing section) of the track, it can push the seedling pot a2. After pushing in place, the push unit 11 moves downward along the front side (first transition section) of the track to leave the seedling pot a2, and then returns along the lower side (return section) of the track, and finally moves upward along the rear side (second transition section) of the track to reach the rear side of the next seedling pot a2. With this solution, when the push unit 11 pushes the seedling pot a2, its contact area with the seedling pot a2 remains unchanged, and the pushing effect is good.

[0063] In order to realize the movement of the push unit 11 along the trajectory, the push mechanism 1 includes a vertical guide unit 15 and a parallel guide unit 16; the parallel guide unit 16 can slide along the vertical guide unit 15 and its sliding is carried out between the upper and lower limits; the push unit 11 can slide along the parallel guide unit 16 and its sliding is carried out between the front and rear limits. The push mechanism 1 also includes a rotating rod 17 connected to the second access unit 12, and a sliding sleeve 18 is rotatably installed on the push unit 11. The rotating rod 17 and the sliding sleeve 18 are slidably matched, and a first spring 19 is strung on the rotating rod 17 to make the sliding sleeve 18 have a tendency to move away from the rotation center of the rotating rod 17. Through the above structure, the push unit 11 can be realized to move along a square trajectory.

[0064] Example 5

[0065] In this embodiment, Fig.11 As shown, the cutting knife 21 of the cutting mechanism 2 can move close to the cutting position and away from the cutting position. Specifically, the power connected to the third connecting unit 22 can make the cutting knife 21 move in a cycle according to the following process t1)-t4): t1) close to the cutting position; t2) cutting the strip a1 at the cutting position; t3) away from the cutting position.

[0066] In this embodiment, the third access unit 22 is a continuously rotating shaft, and the specific structure of the cutting mechanism 2 is as follows: the cutting mechanism 2 includes, in addition to the cutting knife 21, a fixed seat 251 fixed relative to the channel 5, and a sliding seat 252 sliding along the fixed seat 251. A cutting assembly is installed on the sliding seat 252. The cutting assembly includes two of the above-mentioned cutting knives 21, and also includes a connecting rod 253 connecting the two cutting knives 21. The connecting rod 253 is slidably installed relative to the sliding seat 252, and the relative sliding direction of the two is perpendicular to the sliding direction of the sliding seat 252 itself relative to the fixed seat 251; the cutting mechanism 2 It also includes two push rods 254 connecting the two connecting rods 253, and the two push rods 254 are connected to the sliding push rod 256. The sliding direction of the sliding push rod 256 relative to the sliding seat 252 is consistent with the sliding direction of the sliding seat 252 relative to the fixed seat 251. The two push rods 254 can switch between the first angle state and the second angle state, so that the two cutters 21 can switch between the shearing state and the open state; the sliding seat 52 has a retaining spring 255 that applies force to the push rod 254, and the retaining spring 255 keeps the two push rods 254 in the second angle state. The third access unit 22 is installed with a rotating member 257, and the rotating member 257 has a pin shaft, and the sliding push rod 256 is formed with a slide groove for the pin shaft to move in it.

[0067] Initially, if Fig.12 As shown, the cutting knife 21 is at a position far away from the cutting position, and the pin is also at a position farthest from the cutting position. In the first stage of the rotation of the third access unit 22, the entire sliding seat 252 is pushed to slide relative to the fixed seat 251 by the sliding push rod 256. In this stage, the two push rods 254 are stationary in the second angle state. When the sliding seat 252 reaches the limit position (such as Fig.13 As shown in FIG. 2 , the third access unit 22 continues to rotate to reach the second stage. In this stage, the sliding seat 252 is fixed relative to the fixed seat 251, that is, the cutter 21 reaches the cutting position, and the sliding push rod 256 squeezes the two push rods 254 under the action of the pin, so that the two gradually reach the first angle state, and the two cutters 21 are closed (as shown in FIG. 2 ). Fig.14 As shown), shearing is realized, and when the two cutters 21 are closed, the pin reaches the position closest to the cutting position. Subsequently, the third access unit 22 continues to rotate to open the two cutters 21, and the cutting mechanism 2 returns to the initial state.

[0068] 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 seedling supply device for a rapeseed transplanter, used for supplying rapeseed seedlings to a transplanting mechanism (A), wherein the rapeseed seedlings are connected in series by strips (a1) to form a series body (a), and the seedling supply device comprises a pushing mechanism (1) and a cutting mechanism (2); the pushing mechanism (1) comprises a pushing unit (11) for sequentially pushing the rapeseed seedlings in the series body (a) to a seedling picking position (b); the cutting mechanism (2) comprises a second rotating seat (23), and a cutting knife (21) for cutting off the connection between the rapeseed seedling located at the seedling picking position (b) and its adjacent rapeseed seedlings; all the cutting knives (21) are fixed on the second rotating seat (23); characterized in that: The transplanting mechanism (A), the pushing mechanism (1) and the cutting mechanism (2) establish a linkage relationship through a linkage mechanism (3); The transplanting mechanism (A), the pushing mechanism (1) and the cutting mechanism (2) respectively have a first access unit (A1), a second access unit (12) and a third access unit (22) for accessing power, at least one of the three access units is connected to a power source (B) to obtain power, and the access unit that is not connected to the power source (B) to access power accesses power from other access units; The pushing unit (11) is driven by a first driving mechanism to operate at a preset operating speed, the first driving mechanism being an intermittent motion mechanism arranged between the second access unit (12) and the pushing unit (11); the first driving mechanism is a grooved wheel mechanism (c); The cutting knife (21) is driven by a second driving mechanism to operate at a preset operating speed. The second driving mechanism is an intermittent motion mechanism arranged between the third access unit (22) and the cutting knife (21). The second driving mechanism is a ratchet intermittent mechanism (d). The ratchet intermittent mechanism (d) comprises a mechanism base (d3). A crank swing guide rod mechanism (d1) and a ratchet (d4) are mounted on the mechanism base (d3). A first ratchet (d2) is mounted on a rocker (d11) of the crank swing guide rod mechanism (d1). A second ratchet (d5) is also mounted on the mechanism base (d3). The second rotating base (23) is fixedly mounted relative to the ratchet (d4).

2. The seedling supply device of the rapeseed transplanter according to claim 1, characterized in that: The series body (a) further comprises a seedling raising pot (a2), and the strip body (a1) connects the seedling raising pot (a2); The cutting mechanism (2) is used to cut the strip-shaped body (a1) between two adjacent seedling raising pots (a2).

3. The seedling supply device of the rapeseed transplanter according to any one of claims 1 to 2, characterized in that: It also includes a channel (5) for the serial body (a) to move therein, and the seedling taking position (b) is located at the rear end of the channel (5).

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