A small transplanting machine for vegetable seedlings

Abstract

This invention relates to the field of planting equipment technology, specifically to a small-scale transplanter for vegetable seedlings. The small-scale transplanter for vegetable seedlings includes a support frame, a transplanting mechanism, an adjusting mechanism, an auxiliary mechanism, and a transmission mechanism. The transplanting mechanism includes a furrowing shovel. The auxiliary mechanism includes two auxiliary components, each including a pressing rod. The adjusting mechanism includes two adjusting components, each including a handrail. The operator stands in the unplanted area and drives the pressing rod in the auxiliary component corresponding to the unplanted area downwards into the soil via the transmission mechanism. The operator faces the direction of travel and pushes the support frame forward using the handrail corresponding to the unplanted area. The resistance and thrust generated by the soil on the pressing rod and furrowing shovel are balanced, allowing the support frame to maintain a stable forward posture. This invention provides a small-scale transplanter for vegetable seedlings to solve the problem that existing transplanters are prone to tripping and have difficulty moving in a straight line when operating backwards.

Description

Technical Field

[0001] This invention relates to the field of planting equipment technology, specifically to a small transplanter for vegetable seedlings. Background Technology

[0002] A small vegetable seedling transplanter is an agricultural machine specifically designed for automatically and efficiently transplanting vegetable seedlings cultivated in plug trays or seedling pots to open fields or greenhouse planting ridges. Its core function is to replace traditional, heavy, and inefficient manual transplanting operations, automatically completing a series of processes including seedling extraction, conveying, hole preparation, planting, covering with soil, and compaction. Its main purpose is to improve the standardization, efficiency, and planting quality of transplanting operations. By precisely controlling plant spacing and planting depth, it creates a consistent initial growth environment for seedlings, thereby ensuring seedling survival rates, promoting uniform crop growth, and laying a solid foundation for subsequent field management and harvesting.

[0003] These transplanters are primarily suitable for family farms, specialized cooperatives, and facility agriculture parks of moderate scale. Typical applications include: transplanting seedlings of high-value vegetables such as peppers, tomatoes, eggplants, cabbages, and cauliflower in large-scale open-field vegetable production; precision planting operations in protected areas such as greenhouses and multi-span greenhouses; and seasonal concentrated transplanting production to meet crop rotation and seize the opportune time. Compared to large transplanters, small transplanters are characterized by their compact structure, maneuverability, lower purchase and operating costs, and strong adaptability to field size and terrain, making them highly suitable for the vegetable production model in most parts of my country, which is dominated by small and medium-sized plots.

[0004] For example, utility model CN212324718U discloses a transplanter that operates in reverse. This device allows for single-person operation, with one hand holding the transplanter frame and the other hand transplanting seedlings. However, this reverse operation method, where the operator faces away from the direction of travel, makes it impossible to directly observe the road conditions behind them, making them highly susceptible to tripping over obstacles such as field ridges and stones. It also makes it difficult to ensure the straightness of the travel route, potentially leading to uneven row spacing and affecting the uniformity of planting. Summary of the Invention

[0005] This invention provides a small transplanter for vegetable seedlings to solve the problem that operators are easily tripped and have difficulty moving in a straight line when existing transplanters are working backwards.

[0006] The present invention provides a small-scale vegetable seedling transplanter with the following technical solution: A small-scale vegetable seedling transplanter includes a support frame, a transplanting mechanism, an adjusting mechanism, an auxiliary mechanism, and a transmission mechanism. The support frame moves along a first direction, which is a horizontal direction. The transplanting mechanism includes a trenching shovel mounted on the support frame.

[0007] The auxiliary mechanism includes an auxiliary frame and two auxiliary components. The auxiliary frame is rotatably connected to the support frame at its center. The two auxiliary components are located on either side of the trenching shovel along a second direction, which is horizontal and perpendicular to the first direction. Each auxiliary component includes a vertical downward pressure rod, which is threaded into the auxiliary frame.

[0008] The adjustment mechanism is positioned in front of the support in the direction of movement, relative to the auxiliary mechanism. The adjustment mechanism includes two adjustment components distributed along a second direction. Each adjustment component includes an adjustment rod and a handrail. The adjustment rod is mounted on the support and is positioned along the second direction during operation.

[0009] The handrail and corresponding adjusting rod are parallel, and a slider is set in the middle of the handrail, which is slidably mounted on the adjusting rod along its axial direction. Each slider is positioned between the trenching shovel and the downward pressing rod on the same side. During operation, the two sides of the support along the second direction correspond to the planted and unplanted areas, respectively. The operator stands in the unplanted area, facing the direction of travel, holds the handrail corresponding to the unplanted area, and moves forward.

[0010] The transmission mechanism drives the downward pressure rod in the auxiliary component corresponding to the unplanted area to rotate forward and move downward to insert into the soil. By adjusting the position of the handle, the torque on the handle caused by the soil resistance on the trenching shovel and the downward pressure rod can be balanced.

[0011] Furthermore, the two adjusting rods are fixedly connected, with their connection point rotatably connected to the bracket and forming an angle between them. The adjusting rods have a first position and a second position. In the first position, the axial direction of the adjusting rod is aligned with a second direction; in the second position, the axial direction of the adjusting rod forms an angle with the second direction. When one adjusting rod is in the first position, the other adjusting rod is in the second position. Manually rotating the handle changes the first and second positions of the adjusting assembly.

[0012] Furthermore, the auxiliary frame includes two rotating rods distributed along the second direction, the two rotating rods being fixedly connected, and their connection point being rotatably connected to the support frame with an included angle between them. Two auxiliary components are respectively disposed on the two rotating rods.

[0013] The rotating rod has a third position and a fourth position. In the third position, the axial direction of the rotating rod is aligned with the second direction. In the fourth position, the axial direction of the rotating rod forms an angle with the second direction. When one rotating rod is in the third position, the other rotating rod is in the fourth position.

[0014] Furthermore, the two rotating rods are designated as a first auxiliary rod and a second auxiliary rod, respectively. The two adjusting rods are designated as a first rod and a second rod, respectively. The first rod and the first auxiliary rod are located on the same side along the second direction, as are the second rod and the second auxiliary rod. When the first rod is in the first position, the first auxiliary rod is in the third position. When the first rod is in the second position, the first auxiliary rod is in the fourth position.

[0015] The transmission mechanism includes a first pull rope and a second pull rope. The first pull rope connects the first auxiliary rod and the second rod on the side away from the auxiliary frame, and the second pull rope connects the second auxiliary rod and the first rod on the side away from the auxiliary frame. When the first rod rotates from the second position to the first position, the second rod rotates from the first position to the second position, and drives the second auxiliary rod to rotate from the fourth position to the third position via the second pull rope.

[0016] Furthermore, two arc-shaped racks are fixedly installed on the support, with the two arc-shaped racks located on both sides of the trenching shovel along the second direction, and the concave surfaces of the two arc-shaped racks facing each other.

[0017] The transmission mechanism also includes two transmission components, which are respectively mounted on the first auxiliary rod and the second auxiliary rod. Each transmission component includes a gear and a first torsion spring. The gear is rotatably mounted on either the first or second auxiliary rod. Each gear and its corresponding pressing rod are coaxially arranged and rotatably connected. The first torsion spring connects the gear and the pressing rod. Each gear meshes with an arc-shaped rack on the same side along the second direction. When the first auxiliary rod rotates from the fourth position to the third position, the gear on the first auxiliary rod rotates forward, and drives the pressing rod to rotate forward via the first torsion spring.

[0018] Furthermore, the auxiliary mechanism also includes a first connecting rod, a second connecting rod, a first deflection wheel, and a second deflection wheel. A first rotating ring is rotatably mounted on the first auxiliary rod. The first rotating ring and the corresponding pressing rod are coaxially arranged. The first rotating ring can drive the pressing rod to rotate synchronously, and the two can slide relative to each other up and down. One end of the first connecting rod is rotatably connected to the first rotating ring, and the other end of the first connecting rod is rotatably connected to the first deflection wheel, which is in contact with the ground.

[0019] A second rotating ring is rotatably mounted on the second auxiliary rod. The second rotating ring and the corresponding pressing rod are coaxially arranged. The second rotating ring can drive the pressing rod to rotate synchronously, and the two can slide relative to each other up and down. One end of the second connecting rod is rotatably connected to the second rotating ring, and the other end of the second connecting rod is rotatably connected to the second anti-deviation wheel, which is in contact with the ground.

[0020] Furthermore, a guide groove is provided on the support, which is set along the first direction and runs through the upper and lower sides of the support. A seedling storage plate is fixedly installed on the support, which is inclined to store and guide the seedlings into the guide groove, so that the seedlings eventually fall into the seed furrow formed by the furrowing shovel.

[0021] Furthermore, the transplanting mechanism also includes two soil-burying plates, which are fixedly mounted on the support. The two soil-burying plates are distributed sequentially along the second direction and are inclined to push the soil back into the planting furrow.

[0022] Furthermore, the transplanting mechanism also includes two compaction wheels, which are rotatably mounted on a support. Each compaction wheel corresponds to a soil-burying plate, and the compaction wheel contacts the ground to compact the soil in the planting furrow.

[0023] Furthermore, the support includes a base and a telescopic rod, with the telescopic rod and base fixedly connected. An adjustment mechanism is mounted on the telescopic rod, while auxiliary and transplanting mechanisms are located on the base. The telescopic rod is angled, and its lower end is equipped with rotatable casters.

[0024] The beneficial effects of this invention are as follows: In this small-scale vegetable seedling transplanter, the operator stands in the unplanted area and drives the downward-moving lever in the auxiliary component corresponding to the unplanted area to rotate forward and move downward into the soil via a transmission mechanism. The operator pushes the support frame forward in a first direction using the handrail corresponding to the unplanted area. At this time, both the trenching shovel and the downward-moving lever are in contact with the soil. During the movement, both are subject to soil resistance in the opposite direction to the manual pushing force.

[0025] Because the operator's handrail is positioned between the trenching shovel and the downward-moving pressure bar, the lever arm length of the soil resistance experienced by the trenching shovel and the pressure bar relative to the point of application of the handrail can be adjusted by moving the corresponding slider. This ensures that the resistance torques generated by the two components around the handrail are equal in magnitude and opposite in direction, achieving torque balance. In this balanced state, the support structure moves smoothly without pitching. At this point, the horizontal forward thrust applied by the operator only needs to balance the resultant force of the resistance experienced by the trenching shovel and the pressure bar to easily and effortlessly propel the support structure forward at a constant speed.

[0026] This design ensures that when the operator pushes the support from one side, the torque balance adjustment mechanism maintains a stable forward posture even under unilateral operation, thereby improving the straight-line accuracy of transplanting operations. The device allows operators to face the direction of travel and stand on one side of the support for propulsion, a method more in line with natural human movement. It significantly improves the intuitiveness and comfort of operation, and fundamentally avoids the safety hazards of obstructed vision and tripping when walking backwards, greatly enhancing operational safety. At the same time, this design reduces the difficulty of operation and physical burden, making transplanting operations more labor-saving, efficient, and suitable for long-term field work.

[0027] The pressure bar inserted into the soil loosens the soil in unplanted areas beforehand, effectively reducing soil resistance during subsequent trenching and thus improving the overall efficiency of transplanting operations. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a small transplanter for vegetable seedlings provided in an embodiment of the present invention;

[0030] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0031] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0032] Figure 4 This is a schematic diagram of the structure of a small transplanter for vegetable seedlings provided in an embodiment of the present invention from another perspective;

[0033] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0034] Figure 6 A top view of a small transplanter for vegetable seedlings provided in an embodiment of the present invention;

[0035] Figure 7 for Figure 6 Sectional view along the DD direction;

[0036] Figure 8 for Figure 7 Enlarged view at point E in the middle;

[0037] Figure 9 An exploded view of a small transplanter for vegetable seedlings provided in an embodiment of the present invention.

[0038] In the diagram: 100, base; 101, seedling storage board; 102, trenching shovel; 103, soil covering board; 104, soil pressing wheel; 105, moving wheel; 106, telescopic rod; 109, arc-shaped rack; 110, guide groove; 201, handrail; 202, slider; 204, gear; 205, first torsion spring; 206, downward pressure rod; 207, first rotating ring; 208, first anti-deviation wheel; 211, first pull rope; 212, second pull rope; 220, first connecting rod; 301, first auxiliary rod; 302, second auxiliary rod; 401, first rod; 402, second rod. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Reference Figures 1 to 9 As shown in the figure, an embodiment of the present invention provides a small transplanter for vegetable seedlings, including a support frame, a transplanting mechanism, an adjusting mechanism, an auxiliary mechanism, and a transmission mechanism. The support frame moves along a first direction, which is a horizontal direction. The transplanting mechanism includes a trenching shovel 102 mounted on the support frame.

[0041] The auxiliary mechanism includes an auxiliary frame and two auxiliary components. The auxiliary frame is rotatably connected to the support at its center. The two auxiliary components are located on either side of the trenching shovel 102 along a second direction, which is horizontal and perpendicular to the first direction. Each auxiliary component includes a vertical downward pressure rod 206, which is threaded into the auxiliary frame.

[0042] The adjustment mechanism is located in front of the support in the direction of movement relative to the auxiliary mechanism. The adjustment mechanism includes two adjustment components distributed along the second direction. Each adjustment component includes an adjustment rod and a handrail 201. The adjustment rod is mounted on the support and is positioned along the second direction during operation.

[0043] The handle 201 and its corresponding adjusting rod are parallel. A slider 202 is provided in the middle of the handle 201, and the slider 202 is slidably mounted on the adjusting rod along its axial direction. Each slider 202 is positioned between the trenching shovel 102 and the pressing rod 206 on the same side. During operation, the two sides of the support along the second direction correspond to the planted area and the unplanted area, respectively. The operator stands in the unplanted area, facing the direction of travel, grasps the handle 201 corresponding to the unplanted area, and moves forward.

[0044] The transmission mechanism drives the downward pressure rod 206 in the auxiliary component corresponding to the unplanted area to rotate forward and move downward to insert into the soil. By adjusting the position of the handle 201, the torque exerted on the handle 201 by the soil resistance on the trenching shovel 102 and the downward pressure rod 206 can be balanced.

[0045] The operator stands in the unplanted area and drives the downward pressure rod 206 in the auxiliary component corresponding to the unplanted area to rotate forward and move downward into the soil via the transmission mechanism. The operator pushes the support forward in the first direction using the handrail 201 corresponding to the unplanted area. At this time, both the trenching shovel 102 and the downward-moving pressure rod 206 are in contact with the soil. During the movement, both are resisted by the soil in the opposite direction to the manual pushing force.

[0046] Since the operator's handrail 201 is positioned between the trenching shovel 102 and the downward-moving pressure rod 206, the lever arm length of the soil resistance experienced by the trenching shovel 102 and the pressure rod 206 relative to the point of application of the handrail 201 can be adjusted by moving the corresponding slider 202. This ensures that the resistance torques generated by the two components around the handrail 201 are equal in magnitude and opposite in direction, achieving torque balance. In this balanced state, the support moves smoothly without pitching. At this time, the horizontal forward thrust applied by the operator only needs to balance the resultant force of the resistance experienced by the trenching shovel 102 and the pressure rod 206 to easily and effortlessly propel the support forward at a constant speed.

[0047] This design ensures that when the operator pushes the support from one side, the torque balance adjustment mechanism maintains a stable forward posture even under unilateral operation, thereby improving the straight-line accuracy of transplanting operations. The device allows operators to face the direction of travel and stand on one side of the support for propulsion, a method more in line with natural human movement. It significantly improves the intuitiveness and comfort of operation, and fundamentally avoids the safety hazards of obstructed vision and tripping when walking backwards, greatly enhancing operational safety. At the same time, this design reduces the difficulty of operation and physical burden, making transplanting operations more labor-saving, efficient, and suitable for long-term field work.

[0048] In this embodiment, two adjusting rods are fixedly connected, with their connection point rotatably connected to the bracket and forming an angle between them. The adjusting rods have a first position and a second position. In the first position, the axial direction of the adjusting rod is aligned with a second direction; in the second position, the axial direction of the adjusting rod forms an angle with the second direction. When one adjusting rod is in the first position, the other adjusting rod is in the second position. Manually rotating the handle 201 changes the first and second positions of the adjusting assembly.

[0049] In this embodiment, the auxiliary frame includes two rotating rods distributed along a second direction. The two rotating rods are fixedly connected, and their connection point is rotatably connected to the support frame, with an included angle between them. Two auxiliary components are respectively disposed on the two rotating rods.

[0050] The rotating rod has a third position and a fourth position. In the third position, the axial direction of the rotating rod is aligned with the second direction. In the fourth position, the axial direction of the rotating rod forms an angle with the second direction. When one rotating rod is in the third position, the other rotating rod is in the fourth position.

[0051] In this embodiment, the two rotating rods are a first auxiliary rod 301 and a second auxiliary rod 302. The two adjusting rods are a first rod 401 and a second rod 402. The first rod 401 and the first auxiliary rod 301 are on the same side along the second direction, and the second rod 402 and the second auxiliary rod 302 are also on the same side along the second direction. When the first rod 401 is in the first position, the first auxiliary rod 301 is in the third position. When the first rod 401 is in the second position, the first auxiliary rod 301 is in the fourth position. When the second rod 402 is in the first position, the second auxiliary rod 302 is in the third position. When the second rod 402 is in the second position, the second auxiliary rod 302 is in the fourth position.

[0052] The transmission mechanism includes a first pull rope 211 and a second pull rope 212. The first pull rope 211 connects the first auxiliary rod 301 and the side of the second rod 402 away from the auxiliary frame, and the second pull rope 212 connects the second auxiliary rod 302 and the side of the first rod 401 away from the auxiliary frame. When the first rod 401 rotates from the second position to the first position, the second rod 402 rotates from the first position to the second position, and drives the second auxiliary rod 302 to rotate from the fourth position to the third position via the second pull rope 212.

[0053] In this embodiment, two arc-shaped racks 109 are fixedly installed on the bracket. The two arc-shaped racks 109 are located on both sides of the trenching shovel 102 along the second direction, and the concave surfaces of the two arc-shaped racks 109 are opposite to each other.

[0054] The transmission mechanism also includes two transmission components, which are respectively mounted on the first auxiliary rod 301 and the second auxiliary rod 302. Each transmission component includes a gear 204 and a first torsion spring 205. The gear 204 is rotatably mounted on either the first auxiliary rod 301 or the second auxiliary rod 302. Each gear 204 and its corresponding pressing rod 206 are coaxially arranged and rotatably connected. The first torsion spring 205 connects the gear 204 and the pressing rod 206. Each gear 204 meshes with an arc-shaped rack 109 located on the same side along the second direction. When the first auxiliary rod 301 rotates from the fourth position to the third position, the gear 204 on the first auxiliary rod 301 rotates forward, and drives the pressing rod 206 to rotate forward via the first torsion spring 205.

[0055] In this embodiment, the auxiliary mechanism further includes a first connecting rod 220, a second connecting rod, a first deflection suppressing wheel 208, and a second deflection suppressing wheel. A first rotating ring 207 is rotatably mounted on the first auxiliary rod 301. The first rotating ring 207 and the corresponding pressing rod 206 are coaxially arranged. The first rotating ring 207 can drive the pressing rod 206 to rotate synchronously, and the two can slide relative to each other up and down. One end of the first connecting rod 220 is rotatably connected to the first rotating ring 207, and the rotation centers of the first connecting rod 220 and the first rotating ring 207 are set along a second direction. The other end of the first connecting rod 220 is rotatably connected to the first deflection suppressing wheel 208, and the first deflection suppressing wheel 208 is in contact with the ground.

[0056] A second rotating ring is rotatably mounted on the second auxiliary rod 302. The second rotating ring and the corresponding pressing rod 206 are coaxially arranged. The second rotating ring can drive the pressing rod 206 to rotate synchronously, and the two can slide relative to each other up and down. One end of the second connecting rod is rotatably connected to the second rotating ring, and the rotation centers of the second connecting rod and the second rotating ring are set along a second direction. The other end of the second connecting rod is rotatably connected to the second anti-deviation wheel, and the second anti-deviation wheel is in contact with the ground.

[0057] The support has a first side and a second side on both sides along the first direction, and the adjustment mechanism and auxiliary mechanism are distributed sequentially from the first side to the second side of the support. The first auxiliary rod 301 and the first anti-deviation wheel 208 are distributed sequentially from the first side to the second side of the support. The second auxiliary rod 302 and the second anti-deviation wheel are distributed sequentially from the first side to the second side of the support.

[0058] Under normal circumstances, when the pressure rod 206 corresponding to the first auxiliary rod 301 moves with the support, it will plow a straight groove in the soil, and the first anti-deviation wheel 208 will move into the groove. The pressure rod 206 loosens the soil in the unplanted area in advance, effectively reducing the soil resistance of subsequent trenching, thereby improving the overall transplanting efficiency.

[0059] If the trenching shovel 102 encounters rocks or hard soil during the movement of the support, causing a sudden increase in resistance and resulting in the support tending to deviate from the preset direction and tilt towards the unplanted area, the first anti-deviation wheel 208, because it is embedded in the original groove, will still try to maintain the original direction of movement.

[0060] At this time, the first anti-deviation wheel 208 and the first auxiliary rod 301 rotate relative to each other, and through the first connecting rod 220, the first rotating ring 207 rotates relative to the first auxiliary rod 301, thereby driving the corresponding downward pressing rod 206 to press down further, increasing its penetration depth. This significantly increases the resistance of the soil on that side to the downward pressing rod 206, forming an effective corrective torque, promptly suppressing the deviation trend of the support, and ensuring its stable movement along the predetermined route.

[0061] A second torsion spring is provided at the rotatable connection between the first connecting rod 220 and the first auxiliary rod 301, as well as at the rotatable connection between the second connecting rod and the second auxiliary rod 302. The second torsion spring causes the first anti-deviation wheel 208 and the second anti-deviation wheel to press firmly against the ground.

[0062] In this embodiment, a guide groove 110 is provided on the support, which is arranged along a first direction and extends through the upper and lower sides of the support. A seedling storage plate 101 is fixedly installed on the support, and the seedling storage plate 101 and the guide groove 110 are distributed sequentially from the first side to the second side of the support. The seedling storage plate 101 is inclined to store and guide the seedlings into the guide groove 110, so that the seedlings eventually fall into the seed furrow formed by the furrowing shovel 102.

[0063] In this embodiment, the transplanting mechanism also includes two soil-burying plates 103, which are fixedly mounted on the support. The soil-burying plates 103 are located at the end of the guide groove 110 away from the seedling storage plate 101. The two soil-burying plates 103 are distributed sequentially along the second direction and are inclined to push the soil back into the planting furrow.

[0064] In this embodiment, the transplanting mechanism further includes two compaction wheels 104, which are rotatably mounted on the support. Each compaction wheel 104 corresponds to a soil-burying plate 103, and the corresponding soil-burying plates 103 are distributed sequentially along the direction from the second side to the first side of the support. The compaction wheel 104 contacts the ground and is used to compact the soil in the planting furrow.

[0065] In this embodiment, the support includes a base 100 and a telescopic rod 106, which are fixedly connected. The telescopic rod 106 and the base 100 are distributed sequentially from the first side to the second side of the support. An adjustment mechanism is provided on the telescopic rod 106, while an auxiliary mechanism and a transplanting mechanism are located on the base 100. The telescopic rod 106 is inclined, and a caster 105 is rotatably provided at its lower end. The telescopic rod 106 supports length adjustment and can be flexibly adjusted according to the height of different operators, so that the handrail 201 is in the optimal ergonomic position, improving operating comfort and sustainable operation capability.

[0066] Working process: In the initial state, the first rod 401 is in the second position, the second rod 402 is in the first position, the first auxiliary rod 301 is in the fourth position, and the second auxiliary rod 302 is in the third position. The downward pressure rod 206 on the second auxiliary rod 302 remains in contact with the soil.

[0067] The support frame is pushed to the planting area, aligning the sides of the first rod 401 and the first auxiliary rod 301 with the unplanted area. The operator stands within this unplanted area, grasps the handrail 201 on the first rod 401 with both hands, and pushes the first rod 401 to rotate, moving it from the second position to the first position. Since the first rod 401 and the second rod 402 are fixedly connected, the second rod 402 also rotates from the first position to the second position. As the second rod 402 rotates, it pulls the first auxiliary rod 301 via the first pull rope 211, causing the first auxiliary rod 301 to rotate from the fourth position to the third position, simultaneously driving the second auxiliary rod 302 to rotate from the third position to the fourth position.

[0068] When the first auxiliary rod 301 rotates from the fourth position to the third position, the gear 204 on the first auxiliary rod 301 meshes with the corresponding arc-shaped rack 109, driving the gear 204 on the first auxiliary rod 301 to rotate in the forward direction. Under the action of the corresponding first torsion spring 205, the corresponding pressing rod 206 rotates in the forward direction and moves downward, so that the pressing rod 206 is inserted into the soil.

[0069] At the same time, the second auxiliary rod 302 rotates from the third position to the fourth position, and the gear 204 on the second auxiliary rod 302 meshes with the corresponding arc-shaped rack 109. The gear 204 on the second auxiliary rod 302 rotates in the opposite direction, and under the drive of the corresponding first torsion spring 205, the corresponding downward pressure rod 206 rotates in the opposite direction and moves upward, thereby detaching from the soil.

[0070] The operator pushes the support forward in the first direction using the handle 201. At this time, both the trenching shovel 102 and the corresponding pressing rod 206 of the first auxiliary rod 301 are in contact with the soil. During the movement, both are subject to soil resistance in the opposite direction to the manual pushing force.

[0071] Since the pressure bar 206 is connected to the gear 204 via the first torsion spring 205, when the soil hardness is high, the downward movement distance of the pressure bar 206 is correspondingly shortened, thus keeping the resistance of the soil to the pressure bar 206 relatively stable. However, the trenching shovel 102 has a fixed insertion depth; the greater the soil hardness, the greater the resistance experienced by the trenching shovel 102.

[0072] Since the handrail 201 on the first rod 401 is located between the trenching shovel 102 and the corresponding pressing rod 206 on the first auxiliary rod 301, the lever arm length of the soil resistance on the trenching shovel 102 and the pressing rod 206 relative to the point of action of the handrail 201 can be adjusted by moving the slider 202 on the first rod 401: decreasing the lever arm of the trenching shovel 102 and increasing the lever arm of the handrail 201, so that the resistance torque generated by the two around the handrail 201 is equal in magnitude and opposite in direction, thus achieving torque balance. In this balanced state, the support moves smoothly without pitching. At this time, the horizontal forward thrust applied by the operator only needs to be balanced with the resultant force of the resistance on the trenching shovel 102 and the pressing rod 206 to easily and effortlessly push the support forward at a constant speed. This design ensures that the support can move forward smoothly in a straight line when the operator pushes the support from one side, effectively preventing deflection.

[0073] Subsequently, the chain-linked paper seedling trays are placed on the seedling storage plate 101. Guided by the seedling storage plate 101, the seedlings move into the guide groove 110. The operator pushes the support frame to move in the first direction, and the trenching shovel 102 digs a planting trench in the soil. The seedling falls from the guide groove 110 into the planting trench. Two soil-burying plates 103 then push the soil back into the planting trench, and two soil-pressing wheels 104 compact the soil on both sides of the seedling, thus completing the planting of a single seedling.

[0074] After planting one row of seedlings, the support frame is reversed so that its direction of travel is opposite to the previous round. At this point, the side where the second rod 402 and the second auxiliary rod 302 are located corresponds to the unplanted area. The operator stands in the unplanted area, holds the handle 201 on the second rod 402, and pushes the second rod 402 from the second position to the first position. Simultaneously, under the action of the second pull rope 212, the second auxiliary rod 302 rotates from the fourth position to the third position, and the next round of planting can begin. In this way, the operator remains in the unplanted area throughout the entire operation, completely avoiding trampling or damage to the planted seedlings. Compared to traditional transplanters that require reverse operation, this device allows the operator to face the direction of travel and stand on one side of the support frame to perform the propulsion operation, significantly improving the naturalness, safety, and comfort of the operation, while reducing the difficulty of use and preventing the operator from tripping.

[0075] Under normal circumstances, when the pressure rod 206 corresponding to the first auxiliary rod 301 moves with the support, it will plow a straight groove in the soil, and the first anti-deviation wheel 208 will move into the groove. The pressure rod 206 loosens the soil in the unplanted area in advance, effectively reducing the soil resistance of subsequent trenching, thereby improving the overall transplanting efficiency.

[0076] If the trenching shovel 102 encounters rocks or hard soil during the movement of the support, causing a sudden increase in resistance and resulting in the support tending to deviate from the preset direction and tilt towards the unplanted area, the first anti-deviation wheel 208, because it is embedded in the original groove, will still try to maintain the original direction of movement.

[0077] At this time, the first anti-deviation wheel 208 and the first auxiliary rod 301 rotate relative to each other, and through the first connecting rod 220, the first rotating ring 207 rotates relative to the first auxiliary rod 301, thereby driving the corresponding downward pressing rod 206 to press down further, increasing its penetration depth. This significantly increases the resistance of the soil on that side to the downward pressing rod 206, forming an effective corrective torque, promptly suppressing the deviation trend of the support, and ensuring its stable movement along the predetermined route.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A small-scale transplanter for vegetable seedlings, characterized in that: It includes a support frame, a transplanting mechanism, an adjustment mechanism, an auxiliary mechanism, and a transmission mechanism. The support frame moves along a first direction, which is a horizontal direction. The transplanting mechanism includes a trenching shovel mounted on the support frame. The auxiliary mechanism includes an auxiliary frame and two auxiliary components; the middle of the auxiliary frame is rotatably connected to the support; the two auxiliary components are located on both sides of the trenching shovel along a second direction, which is horizontal and perpendicular to the first direction; each auxiliary component includes a vertical pressing rod, which is threadedly engaged with the auxiliary frame. The adjustment mechanism is located in front of the support in the direction of movement relative to the auxiliary mechanism; the adjustment mechanism includes two adjustment components distributed along the second direction, each adjustment component including an adjustment rod and a handrail, the adjustment rod is set on the support, and the adjustment rod is set along the second direction when working; The handrail and the corresponding adjusting rod are parallel. A slider is set in the middle of the handrail. The slider is slidably set on the adjusting rod along the axis of the adjusting rod. Each slider is located between the trenching shovel and the pressing rod on the same side. During operation, the two sides of the support along the second direction correspond to the planted area and the unplanted area respectively. The operator stands in the unplanted area, faces the direction of travel, holds the handrail corresponding to the unplanted area, and moves forward. The transmission mechanism is used to drive the downward pressure rod in the auxiliary component corresponding to the unplanted area to rotate in the forward direction and move downward to insert into the soil; by adjusting the position of the handrail, the soil resistance on the trenching shovel and the downward pressure rod can balance the torque on the handrail. Two adjusting rods are fixedly connected, and their connection point is rotatably connected to the bracket, with an included angle between them; the adjusting rods have a first position and a second position. In the first position, the axis of the adjusting rod is set along the second direction, and in the second position, the axis of the adjusting rod forms an angle with the second direction; when one adjusting rod is in the first position, the other adjusting rod is in the second position; by manually rotating the handle, the first position and the second position of the adjusting assembly are changed to each other; The auxiliary frame includes two rotating rods distributed along the second direction. The two rotating rods are fixedly connected, and their connection is rotatably connected to the support, with an included angle between them. Two auxiliary components are respectively disposed on the two rotating rods. The rotating rod has a third position and a fourth position. In the third position, the axial direction of the rotating rod is set along the second direction. In the fourth position, the axial direction of the rotating rod forms an angle with the second direction. When one of the rotating rods is in the third position, the other rotating rod is in the fourth position. The two rotating rods are the first auxiliary rod and the second auxiliary rod, respectively; the two adjusting rods are the first rod and the second rod, respectively. The first rod and the first auxiliary rod are on the same side along the second direction, and the second rod and the second auxiliary rod are on the same side along the second direction; when the first rod is in the first position, the first auxiliary rod is in the third position; when the first rod is in the second position, the first auxiliary rod is in the fourth position. The transmission mechanism includes a first pull rope and a second pull rope. The first pull rope connects the first auxiliary rod and the second rod on the side away from the auxiliary frame. The second pull rope connects the second auxiliary rod and the first rod on the side away from the auxiliary frame. When the first rod rotates from the second position to the first position, the second rod rotates from the first position to the second position and drives the second auxiliary rod to rotate from the fourth position to the third position through the second pull rope.

2. The small-scale transplanter for vegetable seedlings according to claim 1, characterized in that: Two arc-shaped racks are fixedly installed on the bracket. The two arc-shaped racks are located on both sides of the trenching shovel along the second direction, and the concave surfaces of the two arc-shaped racks face each other. The transmission mechanism also includes two transmission components, which are respectively mounted on the first auxiliary rod and the second auxiliary rod. Each transmission component includes a gear and a first torsion spring. The gear is rotatably mounted on the first auxiliary rod or the second auxiliary rod. Each gear and its corresponding pressing rod are coaxially mounted and rotatably connected. The first torsion spring connects the gear and the pressing rod. Each gear meshes with an arc-shaped rack on the same side along the second direction. When the first auxiliary rod rotates from the fourth position to the third position, the gear on the first auxiliary rod rotates in the forward direction and drives the pressing rod to rotate in the forward direction through the first torsion spring.

3. The small-scale transplanter for vegetable seedlings according to claim 1, characterized in that: The auxiliary mechanism also includes a first connecting rod, a second connecting rod, a first anti-deviation wheel, and a second anti-deviation wheel; a first rotating ring is rotatably mounted on the first auxiliary rod, and the first rotating ring and the corresponding pressing rod are coaxially arranged. The first rotating ring can drive the pressing rod to rotate synchronously, and the two can slide relative to each other up and down. One end of the first connecting rod is rotatably connected to the first rotating ring, and the other end of the first connecting rod is rotatably connected to the first anti-deviation wheel, with the first anti-deviation wheel in contact with the ground. The second auxiliary rod is rotatably equipped with a second rotating ring. The second rotating ring and the corresponding pressing rod are coaxially arranged. The second rotating ring can drive the pressing rod to rotate synchronously, and the two can slide relative to each other up and down. One end of the second connecting rod is rotatably connected to the second rotating ring, and the other end of the second connecting rod is rotatably connected to the second anti-deviation wheel. The second anti-deviation wheel is in contact with the ground.

4. The small-scale transplanter for vegetable seedlings according to claim 1, characterized in that: The support has a guide groove, which is set along the first direction and runs through the upper and lower sides of the support; a seedling storage plate is fixedly set on the support, which is inclined to store and guide the seedlings into the guide groove, so that the seedlings eventually fall into the seed trench formed by the trenching shovel.

5. A small-scale transplanter for vegetable seedlings according to claim 1, characterized in that: The transplanting mechanism also includes two soil-burying plates, which are fixedly mounted on the support. The two soil-burying plates are distributed sequentially along the second direction and are inclined to push the soil back into the planting furrow.

6. A small-scale transplanter for vegetable seedlings according to claim 5, characterized in that: The transplanting mechanism also includes two soil compaction wheels, which are rotatably mounted on a support; each soil compaction wheel corresponds to a soil-burying plate, and the soil compaction wheel contacts the ground to compact the soil in the planting furrow.

7. A small-scale transplanter for vegetable seedlings according to claim 1, characterized in that: The support includes a base and a telescopic rod, which are fixedly connected to the base; an adjustment mechanism is located on the telescopic rod, and an auxiliary mechanism and a transplanting mechanism are located on the base; the telescopic rod is inclined, and a caster wheel is rotatably mounted on the lower end of the telescopic rod.

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