In-line rice transplanter

Abstract

The invention discloses an in-line rice transplanter, and belongs to the field of agricultural machinery. The frame is provided with a buoyancy pool and can be pulled manually or mechanically; the seedling processing mechanism can slide transversely; the transverse feeding mechanism is a seedling processing mechanism (except seedling standing rods) capable of moving left and right; the rice transplanting mechanism can reciprocate up and down; the seedling transplanting mechanism is hung at the front end of the manual or motorized seesaw rod, the middle part of the seesaw rod is hinged with the frame, and a wooden handle or motorized interface of the operation part is arranged at the rear end; the transverse feeding mechanism is mounted at the rear part of the frame and is in intermittent contact with the rear end of the seesaw rod; the seesaw rod is manually or mechanically operated to move up and down; the rear end of the seesaw rod drives the transverse feeding mechanism to achieve seedbed stepping seedling sharing, and seedbed driving screws achieve two-way stepping of the seedling processing mechanism through one-way rotation of segmented chains. The device is exquisite in structure and high in cost performance, and the line spacing can be set between 10 cm and 30 cm; the manual rice transplanter is about 10 rows and can turn around in situ; the motorized rice transplanter is connected with a plurality of manual rice transplanters in parallel and can reach tens of rows.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a linear rice transplanter. Background Technology

[0002] Rice is a major grain crop in southern my country, and the transplanting process is extremely labor-intensive. For a long time, the mechanization of rice transplanting has lagged far behind in secondary rice-growing areas south of the Yangtze River, such as Yunnan, Guizhou, Sichuan, and Guangxi, due to geographical, geological, soil, and human constraints. In these areas, fields are scattered, irregularly shaped, and mostly located in hilly and mountainous terrain, making it difficult for large wheeled rice transplanters to operate. Even when they can be used, they suffer from large turning radii, numerous repeated transplanting areas, mud sludge accumulation, and slippage, resulting in low transplanting efficiency and significant seedling waste.

[0003] Currently, rice transplanting equipment on the market is mainly divided into two categories: one is large-scale riding rice transplanters, which are expensive and have extremely low cost-effectiveness for small-scale farmers under the household contract responsibility system. They are also complex to maintain and have a high operating threshold. The other is hand-held rice transplanters, which are relatively cheaper, but have extremely demanding requirements for operating conditions. The mud needs to be settled, compacted, and leveled. There are also many operating parts, making it difficult for transplanters to keep up with the transplanting rhythm. This often results in problems such as the seedling needles spinning idly, wheels getting stuck, and steering slipping. After transplanting, a lot of manual replanting is required. After transplanting, the rice seedlings cannot be flooded, otherwise they will drift or be submerged, seriously affecting the survival rate.

[0004] Against this backdrop, rice cultivation in Yunnan, Guizhou, Sichuan, Guangxi, and other regions still largely relies on manual transplanting. Women toil day and night, their faces to the earth and backs to the sky, enduring prolonged periods of bent-over work that cause blood rushing to their heads, resulting in aches, pains, and numbness throughout their bodies. This not only results in an unsightly posture and extreme labor intensity but also extremely low efficiency for a single worker. This backward farming method, which has persisted for thousands of years, is severely incompatible with the requirements of modern agricultural modernization and has become a key bottleneck restricting the improvement of rice production efficiency in these regions.

[0005] Therefore, there is an urgent need to develop a linear rice transplanter that is simple in structure, low in cost, easy to operate, and adaptable to scattered fields, so that small-scale farmers can achieve mechanized rice transplanting with very low investment, fundamentally liberating farmers from the high-intensity manual rice transplanting labor. Summary of the Invention

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a linear rice transplanter, characterized in that it includes a frame, a seedling processing mechanism, a transplanting mechanism, a seesaw, and a transverse feeding mechanism that can be used individually or in multiple parallel combinations and optimized. The frame is used to provide structural support and buoyancy for paddy fields; The seedling processing mechanism is mounted on the frame in a laterally sliding manner to carry and transport seedlings. The rice transplanting mechanism is installed at the front of the frame in a manner that allows it to reciprocate up and down, and is used to perform the actions of picking up and transplanting rice seedlings. The middle part of the seesaw is hinged to the upper part of the frame to form a fulcrum, its front end is driven to be connected to the rice transplanting mechanism, and its rear end is provided with an operating part for the rice transplanter to hold. The transverse feeding mechanism is installed at the rear of the frame and is connected to the rear end of the seesaw and the seedling processing mechanism respectively. When the rice transplanter lifts and presses the seesaw: The front end of the seesaw drives the rice transplanting mechanism to perform a reciprocating linear motion up and down, thus completing the rice seedling picking and transplanting. The rear end of the seesaw periodically actuates the lateral feeding mechanism, thereby driving the seedling processing mechanism to move laterally in a stepping motion to supply new seedlings.

[0007] Preferably, the framework includes: The buoyancy pool is made of iron sheets with sloping front and rear ends. It is used to generate buoyancy in paddy field mud and to level the mud surface. The right keel, left keel, rear keel, upper keel, front keel, lower keel and central keel are connected by welding and bolts to form a three-dimensional frame; The upper surface of the buoyancy pool is in contact with the lower edges of the right keel, left keel, rear keel and lower keel, and is used to support all the upper structures; The rear keel is welded to the rear inclined support of the buoyancy pool, and a strap driver or motorized traction interface is installed on it. A rearview mirror is installed at the front end of the upper keel, and a aiming line is provided in the middle of it; The lower end of the front keel is installed between the right keel and the left keel, and its upper end is fixed to the center position of the upper keel. The two ends of the steering rod are fixed to the rear of the upper keel, and the lower stop point is installed at the midpoint. The motorized rice transplanter can be modified into a suspended beam.

[0008] Preferably, the strap driver includes: The shoulder strap, one end of which is connected to the rice transplanter's shoulder and back; The upper part of the three-eye knot is connected to the other end of the shoulder strap, and the lower part is installed on the rear keel; The three-eye knot is used to adjust the effective length of the shoulder strap, ensuring it does not loosen during high-frequency dragging.

[0009] Preferably, the seedling treatment mechanism includes: The seedbed is used to place seedlings. It has a drive port underneath. The width of the seedlings determines the row spacing. One seedling can correspond to one to three seedling needles. The upper sliding bar and the lower sliding bar are arranged in parallel and their two ends are fixed to the frame; Multiple sliding sleeves, each sliding sleeve is fixedly connected to the seedbed and slidably fitted onto the corresponding sliding rod; A seedling tilting stick and a seedling support base are installed on the seedbed. The seedling tilting stick is used to tilt the stems and leaves of the seedlings backward when taking seedlings, and the seedling support base is used to support the bottom of the seedling base. A perforated channel steel is fixed to the lower part of the frame, and a rectangular hole corresponding to the number and position of the seedling needles is opened in the middle of the channel steel. The distance between the holes depends on the row spacing. The seedling support stick is installed below the four-hole channel steel and is used to block the stems and leaves of the seedlings during transplanting, ensuring that the roots of the seedlings enter the mud first.

[0010] Preferably, the rice transplanting mechanism includes: A dish-shaped frame is fixed between the upper and front keels of the frame. The left end of each lubrication tube is fixed to the lower part of the dish-shaped frame by a screw, and the other end is fixed to the front keel and the dish-shaped frame by an adjustable long fastener; by adjusting the adjustable long fastener, the angle between the dish-shaped frame and the vertical line can be changed, thereby adjusting the longitudinal seedling picking length. The distribution beam is connected to the front end of the seesaw through the drive section. It has multiple openings to fix multiple seedling needle rods, and the drive section is fixed in the middle. The distance between the openings depends on the row spacing. The front end of the seesaw is inserted into the middle of the drive section to generate linkage. Multiple seedling needle rods, with the upper end fixed to the distribution beam and the lower end fixed with seedling needles; Multiple seedling removal tubes are provided, each sleeved over the outside of one of the seedling needle rods and inserted into a corresponding lubrication tube, allowing them to slide within the lubrication tube. The upper end of the seedling retraction tube is equipped with an adjustment sleeve, and the lower end is equipped with a seedling retraction plate; Preferably, the seesaw includes: a rod body having a front end and a rear end, both of which are steel pipe structures; a hinge hole is provided at the center of the rod body; a short section of seamless steel pipe is embedded in the hinge hole; the seamless steel pipe is aligned with the hinge hole of the support frame; the support frame is fixed to the lower part of the upper keel by screws; and the middle part of the rod body is hinged to the frame through a pivot passing through the seamless steel pipe and the hinge hole of the support frame. The front or rear end of the rod is provided with a height adjustment interface. The sleeve of the height adjustment interface is used to detachably install a wooden handle. The height adjustment end includes a screw and a sleeve welded together. The screw is used to fix the nut to the height adjustment interface at the front or rear end of the rod. The rear end of the rod is also provided with a motor interface for connecting to the traction power.

[0011] Preferably, the lateral feed mechanism includes: The shell is a rectangular tube with holes on both sides, installed at the midpoint of the central keel; The fixed sprocket and tension sprocket are fitted with nuts in the bearings of the fixed support and tension support. The fixed support and tension support are embedded in the housing like drawers. The fixed support and tension bracket are installed in the rectangular holes at both ends of the housing. The segmented chain is tightened and loosened by tension bolts to determine the position of the fixed support, tension support and its fixed sprocket and tension sprocket without displacement or loosening. The segmented chain has two parts, long and short. The number of links in the long part depends on the row spacing, and the number of links in the short part determines the diameter of the seedbed drive screw. It is made by repeatedly riveting a section of a closed chain. Its long part is wound between the fixed sprocket and the tension sprocket, and its short part fixes the seedbed drive screw. A ratchet wrench, the sleeve end of which is connected to the horizontal drive bar, has multiple small holes in its handle; the connecting rod can be selectively connected to the front hole of the ratchet wrench handle and the adjustment hole of the seedling divider. Quickly adjust the stepping distance of the seedbed by hand; A spring, one end of which is connected to the end hole of the ratchet wrench, and the other end is attached to the upper limit switch. Preferably, the segmented chain is a closed loop that can be driven to move in a unidirectional cycle. The first end of the seedbed drive screw is fixed to the end of the segmented chain; The second end of the seedbed drive screw is rotatably inserted into the drive port of the seedbed; As the segmented chain moves in a unidirectional cycle, the seedbed drive screw alternately passes through the lower and upper chain segments of the segmented chain; When the seedbed drive screw is located on the lower chain segment, the unidirectional movement of the segmented chain drives the seedbed to move step by step in the first direction; When the seedbed drive screw enters the upper chain segment via the sprocket reversal, the unidirectional movement of the segmented chain drives the seedbed to move stepwise in a second direction opposite to the first direction; Therefore, the seedbed moves autonomously in the opposite direction when it moves to the left or right extreme points, thus achieving automatic left and right circumference. Periodic stepwise movement; When the vertical drive rod is actuated by the rear end of the seesaw, it moves downward by a fixed stroke; When the vertical drive rod is pressed down, it drives the seedling divider to move downward synchronously by a fixed stroke. The first end of the connecting rod can be selectively connected to any one of the adjustment holes of the seedling divider. The lower the position of the adjustment hole, the greater the horizontal displacement of the connecting rod being pulled down, the greater the angle at which the ratchet wrench is turned, the greater the rotation angle of the fixed sprocket, the greater the translation distance of the segmented chain, and the greater the step distance of the seedbed drive screw pushing the seedbed. By selecting adjustment holes of different heights, the single step distance of the seedbed can be adjusted in multiple levels; preferably, the rice transplanter is composed of at least one transplanting unit, and each transplanting unit includes a frame, a transplanting mechanism, a seedling processing mechanism, a seesaw, and a lateral feeding mechanism. Among them, multiple rice transplanting units are fixedly connected side by side through standardized connection interfaces set on the side of the frame and equipped with a seesaw drive device to form a multi-row rice transplanter; The rear end of the seesaw can be optionally equipped with a manual operation section or a motorized interface connected to traction power. The spacing between adjacent seedling needles in the transplanting mechanism is 10 to 30 centimeters. The distance of the manual transplanter's push and pull determines the spacing between seedlings. The speed of the motorized transplanter's traction and the frequency of the seesaw's up and down movement determine the spacing between straight seedlings.

[0012] Compared with the prior art, the inline rice transplanter provided by the present invention has the following beneficial effects: 1. This invention employs a buoyancy pool structure, utilizing the buoyancy and lubrication of water and mud to allow the entire machine to float semi-floating in paddy fields, resulting in minimal movement resistance and flexible, easy steering. The transplanter carries the machine on their shoulder using a shoulder strap drive, allowing them to work in a standing position, completely eliminating the hunched-over, back-to-the-earth transplanting method. A single person can easily complete the workload that previously required four or more people to transplant rice manually, significantly reducing physical exertion on the lower limbs, waist, and back. This fundamentally solves the long-standing problem of relying on manual transplanting in hilly and mountainous areas of southern China where wheeled machinery cannot access the terrain.

[0013] 2. This invention uses a seesaw as the core lever mechanism, with its middle section hinged to the frame to form a fulcrum. The front end drives the transplanting mechanism, and the rear end actuates the lateral feeding mechanism. Its advantage is that the seedbed begins to move after most of the seedling needle has emerged from the rootstock of the seedling. Once the transplanting action begins, the seedbed remains stationary, thus preventing the seedling needle from dragging the seedling and disrupting the uniformity of the seedlings. A single up-and-down swing of the transplanter's hands simultaneously completes both transplanting and seedling feeding, eliminating any wasted time or unnecessary operations. This achieves a perfect timing of "one press, one transplant; one lift, one feed," increasing work efficiency by more than four times compared to manual transplanting. This design completely eliminates the complex multi-lever system of traditional hand-held rice transplanters, making it extremely easy to operate—like a farmer working in the fields—allowing anyone, young or old, to learn and use it immediately.

[0014] 3. This invention features a unique delayed seedling retraction mechanism. Due to inertia, friction from the lubricating grease and the oil seal, the retraction tube lags behind the seedling needle's movement. During downward movement, the needle's groove remains open, not interfering with seedling removal; during upward movement, the needle groove gradually closes, retracting the seedling and precisely placing it in the mud. The planting depth can be preset via the adjusting sleeve or adjusted in real-time via the lower stop point or the lifting height of the wooden handle. This design requires no sensors or power source, relying entirely on mechanical friction for precise control, fundamentally solving the problems of unstable planting depth and seedling drift inherent in traditional rice transplanters.

[0015] 4. This invention employs a ratchet-sprocket-segmented chain composite transmission route. The seedbed drive screw connects to the elongated hole at the seedbed drive port, achieving effective driving and a bidirectional drive logic from the left pole to the right pole or from the right pole to the left pole. The lateral feed mechanism steps in only one direction at a time, automatically reversing direction (reverse direction) when the seedbed reaches the left or right pole, resulting in a very smooth process requiring no intervention. This design completely eliminates complex bidirectional transmission mechanisms and electromagnetic control components, resulting in an extremely simplified structure, near-zero failure rate, and extremely low maintenance costs, making it particularly suitable for the realities of rural areas lacking professional maintenance facilities.

[0016] 5. This invention features multiple adjustment holes vertically aligned on the seedling divider, with connecting rods selectively connected to holes at different heights. Utilizing the lever amplification principle under a fixed downward stroke, it achieves an intuitive adjustment logic where a lower hole position results in a larger step distance. Transplanters can adjust the single-step distance of the seedbed within a range of 17-51 steps without any tools, flexibly adapting to different planting density requirements such as dense planting, conventional planting, and sparse planting. This linear rice transplanter is adaptable to local conditions, covering the agronomical needs of rice cultivation nationwide.

[0017] 6. The inline manual design completely eliminates the wheeled walking mechanism, with the entire machine directly supported on the mud surface by a buoyancy pool. When turning, the transplanter holds down the seesaw stick with one hand to lock the transplanting action, and pulls the steering stick with the other hand to achieve a turnaround on the spot with zero turning radius. Compared to large wheeled rice transplanters, there are no overlapping transplanting areas or blind spots. Operating via a square wave path, only a small amount of replanting is needed along the edge of the field and in the last square meter, resulting in extremely high seedling utilization. It can easily operate in hilly areas, irregular fields, and scattered paddy fields around houses, completely overcoming the limitations of terrain restricting mechanization.

[0018] 7. The inline manual rice transplanter has undergone systematic ergonomic optimization in its operation details: the wooden handle is made of solid wood with poor thermal conductivity, so it won't get too hot to handle even under direct sunlight in summer; the three-eye knot remains secure even during frequent dragging, accommodating transplanters of different heights; a rearview mirror is installed at the front of the upper frame, allowing the transplanter to intermittently observe the situation behind them and avoid collisions; an aiming line is set in the middle of the upper frame, aligned with the field ridge or distant reference points, easily enabling straight-line backward transplanting. Every detail is designed with reducing transplanter fatigue as the core objective, making continuous all-day operation possible.

[0019] 8. The inline manual rice transplanter has no engine, motor, or hydraulic system. The entire machine is constructed from iron, steel, and wooden components connected by welding and bolts, resulting in extremely low material costs and a simple manufacturing process. All moving and friction parts are equipped with grease injection holes; regular grease application allows for long-term maintenance without disassembly. Openings in the casing are sealed with plastic tape during operation; the tape is removed after use for quick drainage and drying. This simple yet highly effective mud and rust prevention design makes it ideal for small-scale farmers under the household contract responsibility system, ensuring that ordinary farmers can afford to buy, use, and repair it.

[0020] 9. The linear rice transplanter eliminates the need for mud settling and compaction, allowing for immediate field work after paddy field preparation. Field preparation and transplanting can be carried out continuously, saving farmers valuable time. The buoyancy pool automatically levels footprints and mud unevenness during movement, creating a level growing environment for seedlings. Transplanting depth can reach over 5 cm, further improving survival rates. Compared to traditional machinery requiring a 3-5 day settling period, this saves nearly a week of farming time per crop. For multi-season planting areas, this means increased field drainage time, allowing for timely planting of winter crops before the autumn rains, resulting in significantly improved economic benefits.

[0021] 10. This invention deeply analyzes the geography, geology, soil and water conditions, and traditional planting habits of minor rice-growing areas such as Yunnan, Guizhou, Sichuan, and Guangxi. Addressing the constraints of fragmented fields, complex terrain, and limited purchasing power among farmers, it systematically solves the four core challenges of cost, terrain, maintenance, and operation through an extremely simple mechanical design. In the film "The Break," women like Li Jinfeng use a rice transplanter, and in the blink of an eye, half a century later, the arduous farming methods of women in minor rice-growing areas of southern China have finally undergone a fundamental transformation. The widespread adoption of this invention will completely liberate rural women from the arduous manual labor of rice transplanting, achieving comprehensive modernization of rice cultivation with minimal investment, resulting in significant socio-economic benefits.

[0022] In summary, this invention, through ingenious lever linkage, reliable inertia and controllable friction, and extremely simple unidirectional transmission, constructs a complete solution for both manual and motorized rice transplanters. It is not merely an agricultural machine, but a revolutionary reshaping of rice cultivation methods nationwide. The inline manual rice transplanter provides millions of rural families under the household contract responsibility system with truly affordable, easy-to-use, and quick-return mechanized equipment; the inline motorized rice transplanter solves the irrigation problems after transplanting for large-scale rice growers and eliminates the risk of low seedling survival rates, possessing extremely high practical application value and profound social significance. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the frame portion of a linear rice transplanter according to the present invention; Figure 2 This is a schematic diagram showing the disassembled frame portion of a linear rice transplanter according to the present invention; Figure 3 This is a schematic diagram of the seedling processing mechanism of a linear rice transplanter according to the present invention; Figure 4 This is a first-view perspective perspective view of a linear rice transplanter according to the present invention; Figure 5 This is a schematic diagram of the transplanting mechanism of a linear rice transplanter according to the present invention; Figure 6 This is a schematic diagram of the seedling retraction plate of a linear rice transplanter according to the present invention; Figure 7 This is a second-view perspective perspective view of a linear rice transplanter according to the present invention; Figure 8 This is a schematic diagram of the internal structure of a linear rice transplanter according to the present invention; Figure 9 This is an enlarged view of section A of a linear rice transplanter according to the present invention.

[0024] 1. Frame section; 1-1. Buoyancy pool; 1-2. Right keel; 1-3. Rear keel; 1-4. Left keel; 1-5. Central keel; 1-6. Upper keel; 1-6-1. Rearview mirror; 1-6-2. Aiming line; 1-7. Front keel; 1-8. Lower keel; 1-9. Shoulder strap actuator; 1-9-2. Shoulder strap; 1-9-3. Three-eye knot.

[0025] 2. Seedling handling mechanism; 2-1. Seedbed; 2-1-9. Drive port; 2-1-2~2-1-4. T-shaped steel; 2-1-1, 2-1-5. Angle iron; 2-1-6, 2-1-11, 2-1-13. Square key; 2-1-7, 2-1-12. Square tube; 2-1-8, 2-1-10. Iron sheet (for installing the seedling tilting rod and seedling support base); 2-2. Upper sliding rod; 2-3. Lower sliding rod; 2-2-1, 2-2-2, 2-3-1, 2-3-2. Sliding sleeve; 2-4. Seedling tilting rod; 2-5. Four-hole channel steel; 2-6. Seedling erecting rod; 2-7. Seedling support base.

[0026] 3. Rice transplanting mechanism; 3-1 Dish-shaped frame; 3-1-1, 3-1-2 Sliding sleeve; 3-1-3 Round tube; 3-1-4, 3-1-7 Square key; 3-1-5, 3-1-6 Square key (forming the seesaw movement area); 3-1-8 Channel steel; 3-2 Rice seedling needle assembly; 3-2-1 Rice seedling needle rod; 3-2-2 Adjusting sleeve; 3-2-3 Retracting tube; 3-2-4 Rice seedling needle; 3-2-5 Retracting plate; 3-3 Lower stop point; 3-4 Lubrication tube; 3-5~3-6 Mounting holes; 3-7 Drive section; 3-8 Distribution beam.

[0027] 4. Seesaw; 4-1. Front end; 4-2. Rear end; 4-3. Straight section; 4-4. Hinged assembly; 4-5~4-6. Wooden handle.

[0028] 5. Lateral feed mechanism; 5-1. Housing; 5-2. Fixed sprocket; 5-2-1. Fixed support; 5-2-2. Fixed bearing; 5-3. Positioning bracket; 5-6. Connecting rod; 5-7. Spring; 5-8. Spring retainer; 5-9. Upper limit switch; 5-10. Upper fixed frame; 5-11. Lower fixed frame; 5-12. Vertical drive rod; 5-13. Tensioning sprocket; 5-13-1. Tensioning support; 5-13-2. Tensioning bearing; 5-14. Horizontal drive rod; 5-15. Ratchet wrench; 5-15-1. Seedbed drive screw; 5-16. Lower limit switch; 5-17. Seedling divider; 5-18. Segmented chain; 5-19. L-shaped bracket. Detailed Implementation

[0029] 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.

[0030] Example 1: The inline rice transplanter of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] like Figures 1-9 As shown, this inline rice transplanter includes: a frame, a seedling processing mechanism, a transplanting mechanism, a seesaw rod, and a transverse feeding mechanism.

[0032] The frame provides structural support and buoyancy for the paddy field. The seedling handling mechanism is mounted on the frame in a laterally sliding manner to carry and transport seedlings. The transplanting mechanism is mounted at the front of the frame in a reciprocating motion to perform seedling picking and transplanting actions. A seesaw is hinged at its middle section to the upper part of the frame to form a fulcrum; its front end is driven by the transplanting mechanism, and its rear end has an operating part for the transplanter to grip. The lateral feed mechanism is mounted at the rear of the frame and is connected to both the rear end of the seesaw and the seedling handling mechanism.

[0033] This rice transplanter utilizes the buoyancy and lubrication of water and mud to reduce labor intensity. The buoyancy tank 1-1 is approximately 0.08 cubic meters, with buoyancy greater than the weight of 80 kg. The working weight of this rice transplanter is approximately 70 kg, which is more than sufficient for the buoyancy.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, frame part 1 includes: buoyancy pool 1-1, right keel 1-2, left keel 1-4, rear keel 1-3, upper keel 1-6, front keel 1-7, lower keel 1-8 and central keel 1-5.

[0035] The buoyancy pool 1-1 is made of iron sheet with inclined surfaces at both ends to generate buoyancy and level the mud surface in paddy fields. As the rice transplanter slides back and forth in the mud, the buoyancy pool 1-1 levels the uneven mud surface. The buoyancy pool 1-1 supports the upper structure, and its upper surface is in contact with the lower edges of the right keel 1-2, left keel 1-4, rear keel 1-3, and lower keel 1-8.

[0036] The rear keel 1-3 is welded to the rear inclined support of the buoyancy pool 1-1 with a square key, and the back strap driver 1-9 is installed on the upper end of the square key of the rear keel 1-3.

[0037] The central keel 1-5 is a section of square or round tube. The right end of the central keel 1-5 is fixed to the port of the right keel 1-2 with screws, and the left end of the central keel 1-5 is fixed to the port of the left keel 1-4 with screws.

[0038] A rearview mirror 1-6-1 is installed at the front end of the upper keel 1-6 to ensure the safety of the rice transplanter. An antenna 1-6-2 is installed at the midpoint of the front end of the upper keel 1-6 as an aiming line; it is erected during rice transplanting to ensure that the rows of rice are in a straight line. A round wooden rod is installed on the upper keel 1-6 as a steering mechanism to prevent burns from the high temperature of the sun.

[0039] The front keel 1-7 is welded from square or round tubing. A metal plate is welded to the upper end of the front keel 1-7, with holes at both ends, and is fixed to the center of the upper keel 1-6 with bolts. The lower end of the front keel 1-7 is installed between the right keel 1-2 and the left keel 1-4. The left end of the front keel 1-7 is fixed to the end of the right keel 1-2 with screws, and the right end of the front keel 1-7 is fixed to the end of the left keel 1-4.

[0040] The lower keel 1-8 is welded together with square keys, forming the front slope of the buoyancy pool 1-1. The lower keel 1-8 is fixed to the ends of the right keel 1-2 and the left keel 1-4 with screws.

[0041] The front right, rear right, lower right, front left, rear left, and lower left of the keel form the vertices of a cube. The edges between these vertices are welded using square keys, and the diagonals are welded using round or square tubes. To save on logistics costs, the keels can also be fixed together using hollow triangular pyramids and screws. The triangular pyramids are made by stamping round iron plates, with the pyramidal face being an isosceles right triangle, the base being an equilateral triangle, and two holes drilled above each edge of the base.

[0042] like Figure 2 As shown, the strap driver 1-9 is installed on the upper end of the square key of the rear keel 1-3.

[0043] The shoulder strap driver 1-9 includes: shoulder strap 1-9-2 and three-eye knot 1-9-3. The three-eye knot 1-9-3 is a combination of a triangular knot and an eye knot. Both ends of the shoulder strap 1-9-2 are simultaneously threaded into the eye knot. It will not loosen under high-frequency pulling and is adaptable to different heights of rice transplanters.

[0044] When in use, the shoulder strap driver 1-9 is worn on the rice transplanter's shoulders and back, with both hands gripping the wooden handles 4-5 and 4-6. The transplanter's height can be adjusted using the three-eye knot 1-9-3 to ensure comfort and ease of use. During operation, the transplanter intermittently observes the aiming line 1-6-2 and the rearview mirror 1-6-1.

[0045] like Figure 3 As shown, the seedling treatment mechanism 2 includes: seedbed 2-1, upper sliding rod 2-2, lower sliding rod 2-3, sliding sleeve 2-2-1, 2-2-2, 2-3-1, 2-3-2, seedling tilting rod 2-4-1, seedling support base 2-7, four-hole channel steel 2-5, and seedling erecting rod 2-6.

[0046] Seedbed 2-1 is used to place seedlings and has a drive port 2-1-9. A single piece of polycarbonate sheet is adhered to the upper surface of seedbed 2-1, serving as a smooth working panel. Three T-shaped steel bars 2-1-2, 2-1-3, and 2-1-4 are fixed to the polycarbonate sheet with double-sided tape to enhance the strength and guide the seedbed. The lower structure of seedbed 2-1 includes two longitudinal angle irons 2-1-1 and 2-1-5, two transverse square tubes 2-1-7 and 2-1-12, and square keys 2-1-6, 2-1-11, and 2-1-13. Upper sliding rod 2-2 and lower sliding rod 2-3 are arranged parallel to each other and fixed at both ends to the frame. Specifically, upper sliding rod 2-2 and lower sliding rod 2-3 are fixed to the right keel 1-2 and left keel 1-4 with screws.

[0047] Sliding sleeves 2-2-1, 2-2-2, 2-3-1, and 2-3-2 are fixedly connected to seedbed 2-1 and slidably fitted onto the corresponding sliding rods. Specifically, sliding sleeves 2-2-1 and 2-2-2, which pass through the upper sliding rod 2-2, are respectively fixed to the square tube 2-1-7 of seedbed 2-1 with screws; sliding sleeves 2-3-1 and 2-3-2, which pass through the lower sliding rod 2-3, are respectively fixed to the square tube 2-1-12 of seedbed 2-1 with screws. The structure of sliding sleeves 2-2-1, 2-2-2, 2-3-1, and 2-3-2 is as follows: a section of round tube, with a piece of iron sheet with holes at both ends welded to the top; a section of seamless steel pipe is embedded inside each end of the round tube; the middle part of the round tube forms a large cavity, and holes are drilled in the cavity for adding lubricating grease.

[0048] The seedling support 2-4 and the seedling tray base 2-7 are installed on the seedbed 2-1. Two iron plates, each with two holes, are welded to the lower left and right sides of the seedbed 2-1. The upper surfaces of iron plates 2-1-8 and 2-1-10 are used to install the seedling support 2-4. The iron plates at both ends of the seedling support 2-4 have four holes each, allowing the seedling support 2-4-1 to move backward three distances depending on the seedling height. The seedling support 2-4 is fixed to the upper surfaces of the iron plates 2-1-14 and 2-1-15 on the seedbed using screws, while the seedling tray base 2-7 is fixed to the lower surfaces of the iron plates 2-1-8 and 2-1-10 on the seedbed. The seedling support 2-4 can be moved upwards depending on the seedling height, facilitating the picking of seedlings with the seedling picker. The seedling tilting stick 2-4 is used to tilt the seedling stems and leaves backward when picking up seedlings, so as to prevent the leaves from obstructing the root parts of the seedlings when picking up the seedlings with the seedling needle; the seedling base support 2-7 is used to support the bottom of the seedling base.

[0049] The four-hole channel steel 2-5 is fixed to the lower part of the frame. Specifically, two iron plates with holes at both ends are welded to the two ends of the four-hole channel steel 2-5-1, and are fixed to the ports below the right keel 1-2 and the left keel 1-4 with screws. The four-hole channel steel 2-5-1 has four rectangular holes in the middle, corresponding to four seedling needles above.

[0050] The seedling support rod 2-6 is installed below the four-hole channel steel 2-5 and secured with screws. The seedling support rod 2-6 is used to block the stems and leaves of the seedlings during transplanting, ensuring that the roots of the seedlings enter the mud first.

[0051] Place the seedling tray on seedbed 2-1, aligning the lower end of the seedling tray with the bottom of the seedling tray 2-7. The seedling needle must be placed in position 2-4 of the seedling stick before placing the seedling tray in.

[0052] like Figures 5-6 As shown, the rice transplanting mechanism 3 includes: a dish-shaped frame 3-1, a lubrication pipe 3-4, a distribution beam 3-8, a drive section 3-7, a seedling needle rod 3-2-1, a seedling needle 3-2-4, a seedling retraction tube 3-2-3, an adjusting sleeve 3-2-2, and a seedling retraction plate 3-2-5. The seedling needle rod 3-2-1, seedling needle 3-2-4, seedling retraction tube 3-2-3, adjusting sleeve 3-2-2, and seedling retraction plate 3-2-5 each consist of four sets, corresponding to four sets of rice transplanting units.

[0053] The dish-shaped frame 3-1 is fixed to the upper keel 1-6 of the frame. Specifically, two sliding sleeves 3-1-1 and 3-1-2 are installed in the round tube 3-1-3. Square keys 3-1-4 and 3-1-7 are welded to both ends of the round tube 3-1-3. The round tube 3-1-3 and channel steel 3-1-8 are welded to both ends of the square keys 3-1-4 and 3-1-7. Two square keys 3-1-5 and 3-1-6 are welded at the midpoint between the round tube 3-1-3 and the channel steel 3-1-8. The area between the square keys 3-1-5 and 3-1-6 is the movement area of ​​the seesaw. The lower end of the square keys 3-1-5 and 3-1-6 is equipped with a lower stop point 3-3. The sliding sleeves 3-1-1 and 3-1-2 of the dish-shaped frame 3-1 are fixed to the port of the upper keel 1-6 with screws.

[0054] Lubrication tubes 3-4 are used for guidance and adjustment. One end of each lubrication tube is fixed to the lower part of the tray frame 3-1 by a first fastener, and the other end is fixed to the front keel 1-7 by an adjustable long fastener. By adjusting the adjustable long fastener, the angle between the tray frame 3-1 and the vertical can be changed, and the range of this angle is approximately 2°. This small angle adjustment can significantly change the forward distance of the seedling needle when it moves downward.

[0055] The specific installation method is as follows: Mounting holes are drilled in the channel steel 3-1-8 below the dish-shaped bracket 3-1. The bolt inserted into the left mounting hole is shorter; a nut is used to secure the left end of the lubrication pipe 3-7-1. The bolt inserted into the right mounting hole is longer; a nut is used to secure the right end of the lubrication pipe to the channel steel 3-1-8. The other end of the longer bolt is secured to the port of the front keel 1-7 with two nuts.

[0056] The lubrication pipe 3-4 is a section of steel pipe. A metal plate with holes at both ends is welded to the middle of the outer edge of the steel pipe. A seamless steel pipe and an oil seal are embedded at each end of the inner steel pipe. The oil seal contacts the outer wall of the seedling removal pipe, generating sliding friction and inertia to provide appropriate damping hysteresis when the seedling removal pipe slides within the lubrication pipe. The lower surface of the oil seal is fixed to the inside of the steel pipe using a flat washer and riveting process, forming a cavity inside the steel pipe. A small hole is drilled in the center of the cavity for adding grease. The distribution beam 3-8 is a section of square tubing with four through holes on the top and bottom, connected to the front end 4-1 of the seesaw rod via the drive joint 3-7.

[0057] The seedling needle assembly 3-2 includes a seedling needle rod 3-2-1, the upper end of which is fixed to the distribution beam 3-8, and the lower end of which is fixed with a seedling needle 3-2-4. Specifically, the upper end of the seedling needle rod 3-2-1 is fixed to the distribution beam 3-8 using nuts, spring washers, flat washers, and flange nuts. The seedling needle rod is a section of cold-drawn wire, with one end tapped and the other end flattened and drilled with two holes. The lower end of the seedling needle rod is fixed to the seedling needle 3-2-4 with rivets or screws. The width of the seedling needle is 1.5 cm.

[0058] The seedling retraction tube 3-2-3 is fitted over the outside of the seedling needle rod and passes through the corresponding lubrication tube, allowing it to slide within the lubrication tube. An adjusting sleeve 3-2-2 is installed at the upper end of the retraction tube. A short section of the lower outer wall of the retraction tube is tapped, and a seedling retraction plate 3-2-5 is installed through the threads. The upper end of the retraction plate is a nut, and the lower end is a section of spring steel plate. A hole is drilled at the center point of the lower end of the spring steel plate, and a screw is used to install the lower end of the retraction plate into the groove at the lower end of the seedling needle. In the initial state, the retraction plate is located at the upper stop point of the seedling needle groove, i.e., the retraction plate is in its highest position.

[0059] The drive section 3-7 is installed below the distribution beam 3-8. Two through holes are drilled at the center of the distribution beam 3-8 for mounting the drive section 3-7. Two iron plates, each with two holes at both ends, are welded below the bolts. A rivet is inserted between the two parallel holes, and a sleeve is fitted over the rivet, allowing it to rotate to reduce friction. The front end 4-1 of a rocker arm is inserted between sleeves 3-7-8 and 3-7-9. The drive section 3-7 is then fixed below the distribution beam 3-8 using bolts.

[0060] like Figure 4 As shown, the seesaw 4 includes: a front end 4-1, a rear end 4-2, a straight section 4-3, a wooden handle 4-5, 4-6, and a hinge assembly.

[0061] The seesaw is installed at the center of the keel 1-6, which is the fulcrum of the seesaw.

[0062] The front end 4-1 passes through the square keys 3-1-5 and 3-1-6 of the tray frame 3-1 above, moves up and down between the square keys, and then inserts the drive joint 3-7 above the front end 4-1. The rear end 4-2 is connected to the front end 4-1 through the straight joint 4-3. The straight joint 4-3 connects the front end 4-1 and the rear end 4-2 using threads.

[0063] Wooden handles 4-5 and 4-6 are installed below the rear end 4-2 via height adjustment ends. The hinge assembly includes a support fixed to the center of the upper keel 1-6 and a pivot shaft passing through the support. Specifically, a triangular iron piece is welded to the center of the upper keel 1-6, and two holes are drilled between the acute angles of the triangular iron. Bolts are inserted into the two holes, and the middle part of the seesaw is hinged to the frame through this hinge assembly.

[0064] like Figure 4 , Figures 7-9 As shown, the transverse feed mechanism 5 includes: housing 5-1, fixed sprocket 5-2, tension sprocket 5-13, segmented chain 5-18, horizontal drive rod 5-14, vertical drive rod 5-12, seedling divider 5-17, ratchet wrench 5-15, spring 5-7, etc.

[0065] The housing 5-1 is made of a rectangular tube and is installed at the midpoint of the central keel 1-5. Holes are drilled on both sides of the housing 5-1-1 for mounting and fixing sprockets 5-2-12 and tensioning sprockets 5-13-11. Holes are drilled on the front of the housing 5-1-1 to install bolts and secure the right end of the upper fixing bracket 5-10. The left end of the upper fixing bracket 5-10 is fixed with bolts and nuts to the lower end of the port in the middle of the sliding bar. The left end of the lower fixing bracket 5-11 is also mounted on the surface of the housing 5-1, and the right end of the lower fixing bracket 5-11 is fixed with bolts and nuts to the port of the rear keel 1-3.

[0066] Fixed sprocket 5-2 and tension sprocket 5-13 are rotatably mounted on one side of housing 5-1-1. One end of fixed sprocket 5-2 and tension sprocket 5-13 is a shaft surface and bolt, with a step in the middle to limit the bearing's leftward movement. Fixed bearing 5-2-2 and the left end of horizontal drive rod 5-14 are mounted on the right end of fixed sprocket 5-2. Specifically, the outer edge of fixed bearing 5-2-2 is a fixed support 5-2-1, which is made of a section of channel steel. A hole is drilled at the center of the bottom surface of the channel steel, and a seamless steel pipe is welded to a position larger than the hole diameter. The fixed bearing 5-2-2, installed inside the steel pipe, is fixed using a riveting process. Fixed support 5-2-1 is bolted inside housing 5-1.

[0067] Tensioning sprocket 5-13 is fitted with tensioning bearing 5-13-5. Specifically, the outer edge of tensioning bearing 5-13-2 is fixed to the middle of tensioning support 5-13-1. Tensioning support 5-13-1 is a section of channel steel. A hole is drilled at the center of the bottom surface of the channel steel, and a seamless steel pipe is welded to a position larger than the diameter of the hole. Tensioning bearing 5-13-2 is installed inside and fixed using a riveting process. One end of tensioning support 5-13-1 is equipped with a screw adjustment assembly so that tensioning support 5-13-1 can move a small distance to tension segmented chain 5-18.

[0068] The segmented chain 5-18 is a closed loop, consisting of a long section and a short section. The long section is wound between the fixed sprocket 5-2 and the tensioning sprocket 5-13. The long and short sections are repeatedly riveted together to form a single link. A seedbed drive screw 5-15-1 is fixed to the short section. The segmented chain 5-18 is constructed by repeatedly riveting a single link together with rivets. The long section has a larger number of links, while the short section has very few links, enough to surround the seedbed drive screw 5-15-1. The seedbed drive screw 5-15-1 passes through the short section of the segmented chain 5-18 and is fixed to the short section of the segmented chain 5-18 with a nut. The other end of the bolt 5-15-1 is installed in the drive port 2-1-9 of the seedbed 2-1, thereby enabling the drive port 2-1-9 to move, and consequently, the seedbed 2-1 to move.

[0069] The horizontal drive rod 5-14 is coaxially connected to the fixed sprocket 5-2. The horizontal drive rod 5-14 is a cold-drawn wire, one end of which is inserted into the sleeve of the positioning bracket 5-3. This end is not cut into a regular hexagonal prism. The other end of the horizontal drive rod 5-14 is installed on the right end of the fixed sprocket 5-2.

[0070] The vertical drive rod 5-12 is vertically positioned within the upper limit switch 5-9 and the lower limit switch 5-16. The vertical drive rod 5-12 passes through the middle of the two square keys of the L-shaped bracket 5-19 and the lower fixing bracket 5-11.

[0071] The upper limit switch 5-9 has the following structure: A metal plate with holes at both ends is aligned and welded parallel to each other using a screw, clamping it onto the upper and lower surfaces of the two square keys of the L-shaped bracket 5-19. A bolt is welded to the left end of the upper metal plate to install the spring retainer 5-8. A vertical drive rod 5-12 is also present. The upper limit switch 5-9 is mounted on the square keys of the L-shaped bracket 5-19 to fix the upper part of the vertical drive rod 5-12, ensuring its vertical movement.

[0072] The lower limit switch 5-16 is similar to the upper limit switch. Its specific structure is as follows: a screw aligns and welds the two holes in the two metal pieces at both ends parallel to each other; another hole passes through the lower end of the vertical drive rod 5-12, and a bolt passes through another hole, which is then fixed to the lower fixing bracket 5-11 with a nut. The lower limit switch 5-16 is used to fix the lower end of the vertical drive rod 5-12, ensuring that the rear end 4-2 of the seesaw accurately hits the upper end of the vertical drive rod 5-12 each time.

[0073] L-shaped bracket 5-19 is installed between upper fixing bracket 5-10-1 and rear keel 1-3.

[0074] The seedling divider 5-17 is connected to the lower end of the vertical drive rod 5-12. Specifically, the seedling divider 5-17 is a perforated iron sheet with approximately six holes, and multiple adjustment holes spaced vertically on it to control the number of steps in one cycle of seedbed movement. The connecting rod 5-6 passes through the holes on the seedling divider 5-17.

[0075] The socket end of the ratchet wrench 5-15 is connected to the horizontal drive rod 5-14. The socket of the ratchet wrench 5-15 is mounted on one end of the hexagonal column of the horizontal drive rod 5-14; this end is cut into a hexagonal column and fixed to the lug of the rear keel 1-3 using a positioning bracket 5-3. The operating end of the ratchet wrench 5-15 can be selectively connected to the adjustment hole of the seedling divider 5-17 via the connecting rod 5-6. Multiple small holes are drilled at the end of the handle of the ratchet wrench 5-15, allowing selective attachment of the connecting rod 5-6 and the spring 5-7.

[0076] One end of spring 5-7 is connected to ratchet wrench 5-15, and the other end is hung on the bracket of upper limit switch 5-8. Spring 5-8 is used to return ratchet wrench 5-15 to its initial position.

[0077] The working process of this inline rice transplanter will be described in detail below.

[0078] Preparation: The transplanter hangs the machine on their shoulder and back using the shoulder strap driver 1-9, holding the wooden handles 4-5 and 4-6 with both hands. Height can be adjusted using the three-eye knot 1-9-3 to ensure the transplanter's comfort and ease of use. The seedbed 2-1 is moved to the far left or far right, aligned with the seedling needles, to facilitate placing the seedling trays on it. The lower end of the seedling tray is aligned with the seedling tray base 2-7. The seedling needles 3-2-4 must be placed in advance at the position of the seedling guide stick 2-4 before placing the seedling tray. The seedling guide stick 2-4 should be positioned behind the stem and leaf area of ​​the seedling to prevent the leaves from obstructing the seedling needles 3-2-4 from picking up the seedling roots.

[0079] Seedling removal action: The rice transplanter lifts the wooden handles 4-5 and 4-6 with both hands, causing the front end 4-1 of the seesaw to move downwards. Since the front end 4-1 is connected to the distribution beam 3-8 via the drive joint 3-7, its downward movement drives the distribution beam 3-8 downwards. Four seedling needle rods 3-2-1 are fixed below the distribution beam 3-8, so the downward movement of the distribution beam 3-8 drives the four seedling needle rods 3-2-1 downwards synchronously. A seedling needle 3-2-4 is fixed to the lower end of each seedling needle rod 3-2-1. The seedling needle 3-2-4 descends through the rectangular hole in the four-hole channel steel 2-5, forking the root of a seedling from the seedbed. At this time, the seedling removal tube 3-2-3, which is fitted outside the seedling needle rod 3-2-1, remains temporarily still due to the frictional force of the oil seal inside the lubrication tube 3-4, allowing the seedling needle 3-2-4 to smoothly descend and remove the seedling.

[0080] Rice transplanting action: After the seedling needle 3-2-4 picks up the seedling, the transplanter quickly presses down on the wooden handles 4-5 and 4-6, causing the front end 4-1 of the seesaw to lift upwards. The upward movement of the front end 4-1 again drives the distribution beam 3-8 upwards via the drive joint 3-7. The upward movement of the distribution beam 3-8 causes the seedling needle rod 3-2-1 and the seedling needle 3-2-4 to move upwards together, with the seedling needle 3-2-4 carrying the root of the seedling. Due to the oil seal friction between the seedling retraction tube 3-2-3 and the lubrication tube 3-4, plus the effect of inertia, the seedling retraction tube 3-2-3 and the seedling retraction plate 3-2-5 lag behind the movement of the seedling needle 3-2-4. This lag creates a distance of about 5 centimeters, causing the seedling retraction plate 3-2-5 to block the root part of the seedling, preventing it from moving upwards with the seedling needle 3-2-4, while simultaneously "pushing" the seedling root out of the groove of the seedling needle 3-2-4 and firmly inserting it into the mud. During the upward movement of the seedling needle 3-2-4, the seedling retractor 3-2-5 slides downward relative to the seedling needle 3-2-4 until it reaches the lower stop point of the seedling needle groove. In this process, the seedling retractor 3-2-5 not only pushes the seedling out of the seedling needle groove and allows it to insert into the mud, but also prevents straw, small stones, and other debris from getting stuck in the seedling needle groove, ensuring smooth seedling removal and reliable seedling retraction by the seedling needle 3-2-4.

[0081] The planting depth can be adjusted in two ways: first, by selecting different lengths of the adjusting sleeve 3-2-2 to preset the initial position of the seedling retraction piece 3-2-5, the basic depth can be set; second, during the planting process, the lower stop point 3-3 of the front end 4-1 can be controlled; and third, the distance of the seedling needle 3-2-4 can be adjusted in real time by raising the wooden handles 4-5 and 4-6.

[0082] Seedling delivery action: As the transplanter presses down on the wooden handles 4-5 and 4-6, the seedling feeding action is initiated simultaneously. The rear end 4-2 of the seesaw moves downward, pressing down on the upper end of the vertical drive rod 5-12 near the turning operation unit. The vertical drive rod 5-12 is fixed by the upper limit device 5-9 and the lower limit device 5-16, allowing only vertical movement to ensure that it is accurately struck by the rear end 4-2 of the seesaw each time.

[0083] When the vertical drive rod 5-12 is pressed down, it drives the seedling divider 5-17 to move downwards by a fixed stroke. The seedling divider 5-17 pulls the ratchet wrench 5-15 to rotate by an angle via the connecting rod 5-6. After being pulled, the spring 5-7 pulls the ratchet wrench 5-15 back to its original position, preparing for the next action.

[0084] The socket end of the ratchet wrench 5-15 is fitted onto one end of the horizontal drive bar 5-14 (this end is hexagonal to prevent slippage), thus the rotation of the ratchet wrench 5-15 drives the horizontal drive bar 5-14 to rotate. The horizontal drive bar 5-14 is coaxially connected to the fixed sprocket 5-2, driving the fixed sprocket 5-2 to rotate. A segmented chain 5-18 is wound around the fixed sprocket 5-2 and the tension sprocket 5-13; the rotation of the sprockets drives the segmented chain 5-18 to move.

[0085] The core principle of seedbed stepping: The segmented chain 5-18 is a closed loop that can be driven to move in a unidirectional cycle. The seedbed drive screw 5-15-1 is fixed to the small end segment of the segmented chain 5-18, and its other end is inserted into the drive port 2-1-9 of the seedbed 2-1.

[0086] As the segmented chain 5-18 moves unidirectionally, the seedbed drive screw 5-15-1 alternately passes through the lower and upper chain segments of the segmented chain 5-18. When the seedbed drive screw 5-15-1 is located on the lower chain segment, the unidirectional movement of the lower chain segment (e.g., to the right) causes the seedbed 2-1 to move to the right. When the seedbed drive screw 5-15-1 enters the upper chain segment via the sprocket, the unidirectional movement of the upper chain segment (to the left) causes the seedbed 2-1 to move to the left. Thus, the seedbed 2-1 achieves automatic, periodic left-right stepping movement.

[0087] During normal rice transplanting, seedbed 2-1 needs to continuously move to the right or left to deliver new seedlings below seedling needles 3-2-4. When a seedling is transplanted, the seedbed 2-1 is pulled outward by hand, or the vertical drive rod 5-12 is pressed by hand to move the seedbed 2-1 to the far left or far right to prevent the frame from obstructing the process, making it easier to add new seedlings. The seedbed then moves autonomously to the left back to the starting point. Throughout the entire process, the chain always rotates in one direction, without the need for reversal or manual or additional device intervention.

[0088] Plant number adjustment: The seedling divider 5-17 has multiple adjustment holes spaced vertically along its length. The first end of the connecting rod 5-6 can be selectively connected to any one of the adjustment holes on the seedling divider 5-17. The lower the position of the adjustment hole, the greater the horizontal displacement of the connecting rod 5-6 when the vertical drive rod 5-12 is pressed down to a fixed stroke, the greater the angle at which the ratchet wrench 5-15 is turned, the greater the rotation angle of the fixed sprocket 5-2, the greater the translational distance of the segmented chain 5-18, and the greater the step distance of the seedbed drive screw 5-15-1 pushing the seedbed 2-1.

[0089] Each step distance is approximately 5-15 mm, and the specific value can be adjusted as needed. The width of the seedling needle 3-2-4 is 1.5 cm, and the width of the seedling bed is approximately 25 cm. That is, the row spacing of this implementation case is 25 cm, so it takes about 17 steps for the seedling bed to move completely in one cycle (25cm ÷ 1.5cm ≈ 17 steps). The connecting rod is connected to the ratchet wrench and the seedling divider through different adjustment holes, so that the number of steps in one cycle of the seedbed 2-1 movement is between 17 and 51, thereby precisely controlling the number of seedling beds required per acre.

[0090] Movement and turning: The buoyancy pool 1-1 supports the upper components of the rice transplanter in water and mud, greatly reducing resistance during movement and turning. The transplanter can pull with their hands or gently drag backward with their shoulders and back (using force simultaneously), and the machine will glide smoothly on the mud surface; the dragging distance determines the plant spacing. When turning is needed, the transplanter holds down the seesaw lever 4 with one hand, pulls one end of the steering lever with the other hand, and pulls with force simultaneously with their shoulders and back, achieving a turnaround on the spot without a turning radius.

[0091] Waterproof protection: During rice transplanting, the holes at the bottom and front of the shell 5-1 are sealed with plastic tape to prevent water and mud. After transplanting, the tape is removed to facilitate rapid drainage of water, keep the shell 5-1 dry, and prevent accelerated corrosion of the shell and internal parts.

[0092] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A linear rice transplanter, characterized in that... Frame, seedling handling mechanism, transplanting mechanism, seesaw stick, and lateral feeding mechanism: The frame is used to provide structural support and interfaces for paddy field buoyancy and motorized traction. The seedling processing mechanism is mounted on the frame in a laterally sliding manner to carry and transport seedlings. The rice transplanting mechanism is installed at the front of the frame in a manner that allows it to reciprocate up and down, and is used to perform the actions of picking up and transplanting rice seedlings. The middle part of the seesaw is hinged to the upper part of the frame to form a fulcrum, its front end is driven to be connected to the rice transplanting mechanism, and its rear end is provided with an operating part or motor interface for the rice transplanter to hold. The transverse feeding mechanism is installed at the rear of the frame and is connected to the rear end of the seesaw and the seedling processing mechanism respectively. When the rice transplanter or the motorized connector lifts and presses the seesaw: The front end of the seesaw drives the rice transplanting mechanism to perform a reciprocating linear motion up and down, thus completing the rice seedling picking and transplanting. The rear end of the seesaw periodically actuates the lateral feeding mechanism, thereby driving the seedling processing mechanism to move laterally in a stepping motion to supply new seedlings.

2. The in-line rice transplanter according to claim 1, characterized in that, The framework includes: The buoyancy pool is made of iron sheets with sloping front and rear ends. It is used to generate buoyancy in paddy field mud and to level the mud surface. The right keel, left keel, rear keel, upper keel, front keel, lower keel and central keel are connected by welding and bolts to form a three-dimensional frame; The upper surface of the buoyancy pool is in contact with the lower edges of the right keel, left keel, rear keel and lower keel, and is used to support all the upper structures; The rear keel is welded to the rear inclined support of the buoyancy pool, and a strap driver or motorized traction interface is installed on it. A rearview mirror is installed at the front end of the upper keel, and a aiming line is provided in the middle of it; The lower end of the front keel is installed between the right keel and the left keel, and its upper end is fixed to the center position of the upper keel. The two ends of the steering rod are fixed to the rear of the upper keel, and the lower stop is installed at the midpoint; the steering rod serves as a steering operation component of a manual rice transplanter, or as a suspension beam of a motorized rice transplanter.

3. The in-line manual rice transplanter according to claim 2, characterized in that, The strap driver includes: The shoulder strap, one end of which is connected to the rice transplanter's shoulder and back; The upper part of the three-eye knot is connected to the other end of the shoulder strap, and the lower part is installed on the rear keel; The three-eye knot allows for adjustment of the strap length, accommodating rice transplanters of different heights and preventing the strap from loosening during high-frequency dragging.

4. The in-line rice transplanter according to claim 1, characterized in that, The seedling processing facility includes: A seedbed, used to hold seedlings, has a drive port underneath; The upper sliding bar and the lower sliding bar are arranged in parallel and their two ends are fixed to the frame; Multiple sliding sleeves, each sliding sleeve is fixedly connected to the seedbed and slidably fitted onto the corresponding sliding rod; A seedling tilting stick and a seedling support base are installed on the seedbed. The seedling tilting stick is used to tilt the seedling stems and leaves backward when picking up the seedlings, and the seedling support base is used to support the bottom of the seedling base. A perforated channel steel is fixed to the lower part of the frame, and a rectangular hole corresponding to the number and position of the seedling needles is opened in the middle. The seedling support stick is installed below the porous channel steel to block the stems and leaves of the seedlings during transplanting, ensuring that the roots of the seedlings enter the mud first.

5. The inline rice transplanter according to claim 1, characterized in that, The rice transplanting mechanism includes: A dish-shaped frame is rotatably mounted on the front end of the upper keel of the frame; Each lubrication pipe is fixed to the lower part of the dish-shaped frame by fasteners, and the other end of the fasteners is fixed to the interface on the front keel by adjustable tension fasteners; by adjusting the adjustable tension fasteners, the angle formed between the dish-shaped frame and the vertical line can be changed, thereby adjusting the longitudinal seedling picking length. The distribution beam is connected to the front end of the seesaw via a drive joint; Multiple seedling needles, multiple seedling retraction tubes, and multiple lubrication tubes are vertically arranged on a dish-shaped frame, hence the name "vertical rice transplanter". Multiple seedling needle rods, with the upper end fixed to the distribution beam and the lower end fixed with seedling needles; Multiple seedling removal tubes are used, each tube being sleeved over the outside of one of the seedling needle rods and inserted through a corresponding... One end of the horizontal drive rod is coaxially connected to the fixed sprocket, and the other end is inserted into the tube sleeve of the positioning bracket; A vertical drive rod is vertically installed in the upper limit switch and the lower limit switch; The seedling divider is connected to the lower end of the vertical drive rod, and the seedling divider has multiple adjustment holes spaced apart along the vertical direction; it can slide inside the lubrication tube. The upper end of the seedling removal tube is equipped with an adjustment sleeve, and the lower end is equipped with a seedling removal plate. The adjustment sleeve consists of multiple rubber pads. The initial position of the seedling removal plate is adjusted to set the initial planting depth.

6. The in-line rice transplanter according to claim 5, characterized in that, The seesaw includes: A rod body has a front end and a rear end, both of which are steel pipe structures. A hinge hole is provided at the center of the rod body, and a short section of seamless steel pipe is embedded in the hinge hole. The seamless steel pipe is aligned with the hinge hole of the support frame. The support frame is fixed to the lower part of the upper keel by screws. The middle part of the rod body is hinged to the frame through a pivot that passes through the hinge hole of the seamless steel pipe and the support frame. The front or rear end of the rod is provided with a height adjustment interface, and the sleeve of the height adjustment interface is used to detachably install the wooden handle. The rear end of the rod is also provided with a motor interface for connecting to the traction power.

7. The inline rice transplanter according to claim 4, characterized in that, The lateral feed mechanism includes: The housing is installed at the midpoint of the central keel; The fixed sprocket and the tensioning sprocket are rotatably mounted inside the housing; The segmented chain is made by repeatedly riveting a section of the closed-loop chain together. Its long part is wound between the fixed sprocket and the tensioning sprocket, and its small part is fixed with the seedbed drive screw. A horizontal drive rod, one end of which is coaxially connected to the fixed sprocket, and the other end of which passes through the tube sleeve of the positioning bracket; A vertical drive rod is vertically installed in the upper limit switch and the lower limit switch; The seedling divider is connected to the lower end of the vertical drive rod, and the seedling divider has multiple adjustment holes spaced apart along the vertical direction. A ratchet wrench, with its socket end connected to the horizontal drive bar, has multiple small holes in its handle; a connecting rod can be selectively connected to the front hole of the ratchet wrench and the adjustment hole of the seedling divider, allowing for easy movement. Quickly adjust the stepping distance of the seedbed by hand; A spring, one end of which is connected to the end hole of the ratchet wrench, and the other end is hung on the upper limit switch.

8. The inline rice transplanter according to claim 7, characterized in that: The segmented chain is a closed loop that can be driven to move in a unidirectional cycle. The first end of the seedbed drive screw is fixed to the short part of the segmented chain; The second end of the seedbed drive screw is rotatably inserted into the drive port of the seedbed; As the segmented chain moves in a unidirectional cycle, the seedbed drive screw alternately passes through the lower and upper chain segments of the segmented chain; When the seedbed drive screw is located on the lower chain segment, the unidirectional movement of the segmented chain drives the seedbed to move step by step in the first direction; When the seedbed drive screw enters the upper chain segment via the sprocket reversal, the unidirectional movement of the segmented chain drives the seedbed to step in a second direction opposite to the first direction, thereby enabling the seedbed to achieve automatic left-right periodic stepping movement.

9. The in-line rice transplanter according to claim 7, characterized in that: When the vertical drive rod is actuated by the rear end of the seesaw, it moves downward by a fixed stroke; When the vertical drive rod is pressed down, it drives the seedling divider to move downward synchronously by a fixed stroke. Both ends of the connecting rod can be selectively inserted into either the adjusting hole of the seedling divider and the ratchet handle; The lower the position of the adjustment hole, the greater the horizontal displacement of the connecting rod being pulled down, the greater the angle at which the ratchet wrench is turned, the greater the rotation angle of the fixed sprocket, the greater the translation distance of the segmented chain, and the greater the step distance of the seedbed drive screw pushing the seedbed. By selecting adjustment holes of different heights, the single step distance of the seedbed can be adjusted in multiple levels.

10. The inline rice transplanter according to claim 1, characterized in that: The rice transplanter is composed of at least one transplanting unit, and each transplanting unit includes a frame, a transplanting mechanism, a seedling processing mechanism, a seesaw, and a lateral feeding mechanism. Multiple rice transplanting units are fixedly connected side by side through standardized connection interfaces set on the side of the frame to form a multi-row rice transplanter; The rear end of the seesaw can be optionally equipped with a manual operation section or a motorized interface connected to traction power. The spacing between adjacent seedling needles in the rice transplanting mechanism is 10 to 30 centimeters.

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