Three-row miniature self-propelled salvia miltiorrhiza transplanter

Abstract

The utility model discloses a three-row miniature self-propelled salvia miltiorrhiza transplanter, which relates to the field of Chinese herbal medicine transplanting and planting machinery and comprises a frame, a traveling mechanism, a seedling dropping mechanism, a transplanting mechanism and a transmission system, the traveling mechanism is mounted at the bottom of the front end of the frame, and a height adjusting device can adapt to different transplanting depths; the seedling throwing mechanism is arranged at the top of the rack, and the arrangement mode of the multiple seedling cups and the discharging holes meets the planting requirement of one ridge and three rows of salvia miltiorrhiza; the transplanting mechanism is mounted on the lower rack, and a cam drives a connecting rod mechanism to realize accurate transplanting; the transmission system is located at the foremost end of the rack, and the engine drives the walking wheels and the transplanting mechanism to conduct transplanting operation. The improved transplanting machine effectively adapts to the planting agriculture that three rows of salvia miltiorrhiza are planted on one ridge in Shaanxi province, transplanted seedlings are good in upright performance, seedling throwing can be completed only by one operator, operation efficiency is remarkably improved, and labor cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to an automatic transplanting machine for the traditional Chinese medicine Salvia miltiorrhiza. Background Technology

[0002] The advancement of agricultural modernization is crucial for improving the efficiency and quality of crop cultivation. Salvia miltiorrhiza, a precious traditional Chinese medicine, faces challenges in traditional cultivation due to its reliance on manual transplanting, resulting in high labor intensity and low efficiency. Furthermore, manual transplanting struggles to guarantee the uniformity and survival rate of seedlings, thus limiting the development of the Salvia miltiorrhiza medicinal herb industry.

[0003] Mechanized transplanting technology has been applied to other crops, but its application in the cultivation of Salvia miltiorrhiza remains limited. Most existing transplanters on the market are large-scale machines designed for two-person, two-row or three-person, three-row operation modes. For example, CN119138163A discloses a highly automated transplanter, but it only supports double-row transplanting and has a complex structure with insufficient flexibility. Patent CN116982444A designs a dedicated Salvia miltiorrhiza transplanter that uses a rotating frame and feed pipe for automated feeding, but it employs a double-row structure, which does not meet the requirements of the staggered transplanting mode of three rows per ridge for Salvia miltiorrhiza.

[0004] In view of this, the present invention aims to overcome the limitations of the prior art and provide a new type of three-row self-propelled Salvia miltiorrhiza transplanter. This model is specially designed for three-row staggered transplanting on a single ridge to reduce the damage rate of seedlings during transplanting, improve transplanting efficiency, and thus promote the modernization of the Salvia miltiorrhiza medicinal material industry. Utility Model Content

[0005] To address the problems of disconnect between agricultural machinery and agronomy in Salvia miltiorrhiza transplanting machines in my country, such as unstable seedling planting posture, large size, and unadjustable planting depth, this utility model provides a three-row miniature self-propelled Salvia miltiorrhiza transplanter, suitable for the three-row planting technique in Shaanxi Province.

[0006] This utility model provides the following technical solution: a three-row miniature self-propelled Salvia miltiorrhiza transplanter, including a frame, a walking mechanism, a seedling feeding mechanism, a transplanting mechanism, and a transmission system; the walking mechanism is installed at the bottom front end of the frame; the seedling feeding mechanism is located at the top of the frame; the transplanting mechanism is located on the frame below the seedling feeding mechanism; and the transmission system is located at the front end of the frame.

[0007] Preferably, the traveling mechanism includes a traveling reducer, a shaft connecting device, a height adjusting device, and a drive wheel. The traveling reducer has a built-in clutch, enabling neutral, reverse, and gear shifting functions. Both ends of the traveling reducer are connected to the height adjusting device via the shaft connecting device, and the drive wheel is connected to the lower end of the height adjusting device via a shaft. The shaft connecting device includes a drive shaft and a connecting sleeve for connecting the two shafts. The left end of the drive shaft is connected to the lower drive shaft of the traveling reducer via the connecting sleeve and bolts, and the right end is connected to the height adjusting device via a flange. The height adjusting device includes a height adjusting plate, a sprocket drive housing, a 12-tooth four-point sprocket, a chain, and a lower hexagonal shaft. The drive wheel is driven by an engine mounted on the frame via the traveling reducer.

[0008] Preferably, the seedling feeding mechanism includes seedling cups, a drive shaft, a bearing with a square seat, a driven shaft, an upper sprocket, an upper sprocket chain, a lower sprocket, a lower sprocket chain, a lower base, and a top plate. A ring of seedling cups is arranged around the drive and driven shafts on the transplanting turntable. The seedling cups are divided into four groups, each group containing three seedling cups connected to the chain via three different L-shaped support plates of varying lengths. The bottom opening of each group of seedling cups corresponds to three different discharge holes on the bottom of the transplanting turntable. The drive and driven shafts are mounted on the base. The lower half of the drive shaft is connected to the base via a bearing with a square seat. Upper and lower sprockets are mounted on the drive and driven shafts at two equal heights. The top ends of the drive and driven shafts are connected to the top plate of the seedling feeding mechanism. The chain meshes with the sprockets on the drive and driven shafts. The lower end of the drive shaft is connected to the upper bevel gear of the seedling feeding transmission assembly.

[0009] Preferably, the transplanting mechanism includes a power input component, a hexagonal drive shaft, a cam, an upper double crank connecting rod, a lower double crank connecting rod, a crank connecting rod connecting plate, a compensation and limiting component, and a duckbill planting device. The power input component is connected to a hexagonal drive shaft. The front end of the power input component transmits power through three gears. The cam is connected to the third gear via a shaft and rotates in the same direction as the gear. The outer side of the rear base plate of the power input component is welded to it via an outer sleeve. The upper end of the upper double crank connecting rod is connected to the power input component and the rear base plate via an internal long bolt, allowing the upper double crank connecting rod to swing left and right. The lower end of the upper double crank connecting rod is connected to the lower double crank connecting rod via a crank connecting rod connecting plate. The lower end of the lower double crank connecting rod is connected to the duckbill planting device via a triangular connecting plate. A compensation limit slide rod is installed on the cam. The lower end of the compensation limit slide rod is connected to the upper middle position of the lower double crank connecting rod. The transplanting mechanism drives the upper and lower double crank connecting rods to swing through the rotation of the cam, and through the action of the compensation limit component, the duckbill planting device completes an accurate and appropriate transplanting action.

[0010] Preferably, the lower end of the duckbill opening and closing device is installed on the outer side of the rear base plate of the power input component, and a pull wire is installed on the upper end of the duckbill opening and closing device, with the lower end of the pull wire connected to the duckbill opening and closing device. This enables the opening and closing of the duckbill, thereby facilitating the planting of Salvia miltiorrhiza seedlings.

[0011] Preferably, an engine is fixedly connected to the bottom front end of the frame, and the engine is connected to the power input end of the traveling gearbox and the transplanting gearbox via belt drive.

[0012] Preferably, the transmission system includes a walking transmission and a transplanting transmission. The two active walking wheels transmit engine power through a walking reducer. The transplanting transmission engine rotates a hexagonal drive shaft mounted on the frame through the transplanting reducer. The hexagonal drive shaft drives the duckbill mechanism to operate through the power input component of the transplanting mechanism. The hexagonal drive shaft drives the seedling feeding turntable to rotate through the seedling feeding transmission assembly. Preferably, the seedling feeding transmission assembly consists of an upper bevel gear, a lower bevel gear, a seedling feeding turntable connecting sprocket, a hexagonal shaft connecting sprocket, and a seedling feeding transmission chain. The rotation of the hexagonal drive shaft drives the hexagonal shaft connecting sprocket to rotate, which in turn drives the seedling feeding turntable connecting sprocket to rotate through the seedling feeding transmission chain. The lower bevel gear on the front side of the seedling feeding turntable connecting sprocket meshes with the upper bevel gear to transmit power to the seedling feeding mechanism.

[0013] Preferably, a seedling-feeding seat is fixedly installed on the upper front part of the frame, and the seedling-feeding seat moves directly forward with its back to the frame. A height adjustment rod is connected to the upper and lower frames at the middle and rear ends of the frame, and a rear wheel is connected to the lower frame at the rear end of the frame.

[0014] Preferably, a handrail is fixedly connected to the rear end of the frame. The handrail includes a connecting end and a hand-held end. The connecting end is fixedly connected to the frame, and the hand-held end is provided with an anti-slip area. By providing the handrail, it is convenient for the operator to control the direction of the self-propelled transplanter during its movement. Beneficial effects

[0015] This utility model has the following beneficial effects:

[0016] 1. The present invention provides a miniature self-propelled Salvia miltiorrhiza transplanter with three planting duckbills arranged in an alternating pattern. The seedling turntable can meet the planting needs of three rows of Salvia miltiorrhiza per ridge by setting the position of the seedling cup.

[0017] 2. The miniature self-propelled Salvia miltiorrhiza transplanter provided by this utility model has redesigned the length of the double crank connecting rod group of the transplanting mechanism based on the characteristics of Salvia miltiorrhiza plants. The vertical stroke of the transplanting mechanism can reach about 320mm. At the same time, a transplanting compensation limit component is designed to make the seedling planting posture more stable.

[0018] 3. The miniature self-propelled Salvia miltiorrhiza transplanter provided by this utility model has a walking mechanism that can adjust the overall height of the machine through a walking height adjustment device, so as to realize the transplanting of seedlings at different depths.

[0019] 4. The vehicle body allows one person to control the direction of the vehicle by holding the handrail, while another person sits in the seat and puts the Salvia miltiorrhiza seedlings from the seedling carrier plate into the seedling cup. This eliminates the need for multiple people to follow the vehicle and reduces the labor required.

[0020] 5. The self-propelled transplanter provided by this utility model mainly completes the transplanting of Salvia miltiorrhiza seedlings through a seedling feeding mechanism and a transplanting mechanism. While realizing mechanized planting of transplanted seedlings, it has a simpler structure compared with existing large self-propelled transplanters, and at the same time achieves the effect of reducing costs. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of this utility model after installing the seedling seat and seedling tray placement platform;

[0022] Figure 2 This is a side view schematic diagram of the frame distribution structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the seedling feeding mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the transplanting mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the walking mechanism and frame layout structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the height adjustment device for the walking mechanism of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Frame; 1-1. Main frame square tube; 1-2. Frame welding assembly; 1-3. Height adjustment device; 1-4. Rear wheel square tube sleeve; 1-5. Rear wheel square tube; 1-6. Driven shaft; 1-7. Driven wheel; 1-8. Seat. 2. Traveling Mechanism, 2-1. Drive Wheel, 2-2. Front Plate of Traveling Device Housing, 2-3. Traveling Device Housing, 2-4. Rear Plate of Traveling Device Housing, 2-5. Height Adjustment Plate, 2-6. Hexagonal Shaft Outer Tube, 2-7. Flange, 2-8. Traveling Device Support Plate, 2-9. Lower Hexagonal Shaft, 2-10. Lower Sprocket of Traveling Mechanism, 2-11. Upper Sprocket of Traveling Mechanism, 2-12. Inner Hexagonal Shaft of Traveling Mechanism, 3. Seedling Dispensing Mechanism, 3-1. Drive Shaft, 3-2. Driven Shaft, 3-3. Top Plate, 3-4. Base Plate, 3-5. Drive Shaft Mounting Bushing, 3-6. Upper Left Sprocket, 3-7. Lower Left Sprocket, 3-8. With Square Seat Bearing; 3-9; Tensioning guide bushing; 3-10; U-shaped support plate; 3-11; Seedling cup body; 3-12; Seedling cup lower cover; 3-13; Upper L-shaped support plate; 3-14; Lower L-shaped support plate; 3-15; Left support square tube; 3-16; Left connecting U-shaped groove; 3-17; Right support square tube; 3-18; Right connecting U-shaped groove; 3-19; Upper bevel gear; 3-20; Lower bevel gear; 3-21; Drive shaft; 3-22; Seedling feeding mechanism connecting sprocket; 3-23; Transmission L-shaped support plate; 3-24; Bushing; 3-25; Upper right sprocket; 3-26; Lower right sprocket; 3-27; Upper sprocket chain; 3-28; Lower sprocket chain. 4. Transplanting Mechanism; 4-1. Base Plate; 4-2. Power Input Components; 4-3. Connecting Sleeve; 4-4. Rear Base Plate; 4-5. Transplanting Mechanism Connecting Square Tube; 4-6. Crank Connecting Rod Connecting Plate; 4-7. Lower Double Crank Connecting Rod; 4-8. Main Cam; 4-9. Compensation Limiting Slide Rod; 4-10. Compensation Limiting Shaft; 4-11. Duckbill Opening and Closing Device; 4-12. Duckbill Planting Device; 4-13. Upper Double Crank Connecting Rod; 4-14. Hexagonal Drive Shaft; 5. Transmission System; 5-1. Engine; 5-2. Lower Support Plate of Transmission System; 5-3. Transplanting Reducer; 5-4. Transplanting Reducer Support Plate; 5-5. Transmission System Side Support Plate; 5-6. Travel Reducer; 5-7. Travel Reducer Pulley; 5-8. Front Fixing Plate of Travel Reducer. Detailed Implementation

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention. Figure 1-5 The present invention will be described in further detail below. Example 1

[0030] This utility model discloses a three-row miniature self-propelled Salvia miltiorrhiza transplanter, referring to... Figure 1 and 5 The machine includes a frame 1, a walking mechanism 2 and a transplanting mechanism 4. The walking mechanism 2 is rolled on both sides of the bottom of the frame 1, and the transplanting mechanism 4 is movably installed in the middle of the frame 1. An engine (5-1) is installed on the frame 1. The walking mechanism 2 and the transplanting mechanism 4 are respectively connected to the engine (5-1) through a walking reducer (5-6) and a transplanting reducer (5-3).

[0031] The transplanting mechanism (4) includes a power output component (4-1), an upper double crank connecting rod (4-13), a lower double crank connecting rod (4-7), and a transplanting duckbill (4-12). The power output component (4-1) is fixedly installed on the frame 1, and the duckbill planting device (4-12) is oscillatingly installed on the base plate (4-1).

[0032] The seedling feeding mechanism (3) includes a seedling feeding turntable and a seedling feeding bracket. The seedling feeding bracket is fixedly installed on the frame (1). The bottom discharge hole of the transplanting turntable base (3-4) and the top feed hole of the transplanting duckbill device (4-12) correspond to each other.

[0033] When in use, the engine (5-1) is started by the transplanting switch on the handrail. The driving wheel (2-1) is controlled by the walking reducer (5-6) to move the frame (1). At the same time, the hexagonal drive shaft (4-14) is driven to rotate by the transplanting reducer (5-3), which in turn drives the transplanting mechanism (4) and the seedling placement mechanism (3) to rotate. During the movement, the transplanting mechanism (4) intermittently transplants the Salvia miltiorrhiza seedlings into the soil at predetermined intervals.

[0034] Planting and transplanting steps of a mini self-propelled Salvia miltiorrhiza transplanter:

[0035] When using the machine, first start the engine (5-1), turn on the transplanting switch on the handle, place the Salvia miltiorrhiza seedlings to be transplanted in the seedling cup (3-11), and place the upper part of the transplanting spout (4-12) close to the transplanting base (3-4). After the discharge hole at the bottom of the base (3-4) and the feed hole at the top of the transplanting spout (4-12) are aligned, the Salvia miltiorrhiza seedlings in the seedling cup (3-11) fall into the transplanting spout (4-12). Then, the lower part of the transplanting spout (4-12) is inserted into the soil to bury the Salvia miltiorrhiza seedlings. The drive shaft (3-1) of the seedling feeding mechanism (3) rotates once, and then the upper part of the transplanting spout (4-12) repeats the above operation. This mini self-propelled Salvia miltiorrhiza transplanter has three transplanting gears. When the gear is adjusted to the low transplanting gear, the theoretical plant spacing of the transplanter is 30.6; when adjusted to the high transplanting gear, the theoretical plant spacing of the transplanter is 40.6. Example 2

[0036] Based on Example 1, the following is added:

[0037] Reference Figure 2 and 3 The walking mechanism (2) is connected to the drive shaft of the engine (5-1) through the walking reducer (5-6).

[0038] The travel reducer (5-6) is provided with multiple meshing reduction gears, including a gear for clutch engagement.

[0039] Reference Figure 1 , 2 4. A control handle is installed near the armrest, and the control handle is directly in front of the frame 1.

[0040] The control handle includes a forward / backward control handle, a steering control handle, and a control handle for the transplanting mechanism (4).

[0041] Steps for planting, walking, and turning of a mini self-propelled Salvia miltiorrhiza transplanter.

[0042] When using the machine, first start the transplanter, turn off the transplanter switch on the handrail on the frame (1), adjust the control handle to the walking and turning position, and the operator stands at the end of the handrail and gently lifts the transplanter to achieve field turning. Example 3

[0043] Based on Example 2, the following is added:

[0044] Reference Figure 1 , 2 4. The seedling feeding mechanism (3) is provided with a ring of seedling cups (3-11) around the active shaft (3-1) and the driven shaft (3-2). The bottom opening of the seedling cup (3-11) is in a corresponding position to the bottom discharge hole of the base (3-1) of the seedling feeding mechanism (3).

[0045] Reference Figure 1 , 2 4. A seedling seat (3-12) is installed near the seedling feeding mechanism (3), and the seedling seat (3-12) moves directly in front of the frame (1) with its back to the frame.

[0046] The seedling feeding mechanism (3) is located on the right side of the seedling feeding seat (3-12). The seedling feeding mechanism (3) rotates a set of seedling cups each time, so that the cup body (3-11) of the seedling cup is aligned with the bottom discharge hole of the base plate (3-1). When the transplanting duckbill device (4-12) is raised to the highest position, the bottom cover (3-12) of the seedling cup body (3-11) is opened to complete the seedling feeding operation.

[0047] The transplanter (4-12) has a funnel-shaped opening at the top and a cone-shaped opening at the bottom, with a small opening at the tip of the cone. This structure allows two people to complete the transplanting process, reducing labor, increasing the speed of transplanting, and reducing crop yield reduction caused by missing seedlings. It has the advantages of safety, low labor cost, high efficiency, and easy operation.

[0048] Meanwhile, the tension guide sleeve (3-9) is used to adjust the tension of the seedling cup conveyor chain to avoid inaccurate seedling placement due to improper chain tension, effectively preventing seedling shortages and demonstrating strong practicality.

[0049] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A three-row miniature self-propelled Salvia miltiorrhiza transplanter, comprising a frame (1), a walking mechanism (2), a seedling feeding mechanism (3), a transplanting mechanism (4), and a transmission system (5), wherein the walking mechanism (2) is installed at the bottom front end of the frame; the seedling feeding mechanism (3) is located at the top of the frame; the transplanting mechanism (4) is located on the frame (1) below the seedling feeding mechanism (3); and the transmission system (5) is located at the front end of the frame, characterized in that: An engine (5-1) is mounted on the frame (1). The walking mechanism (2) and the transplanting mechanism (4) are respectively connected to the engine (5-1) for transmission. The engine (5-1), the walking mechanism (2) and the transplanting mechanism (4) are respectively connected to the handrail switch component for control. The transplanting mechanism (4) consists of three planting mechanisms, each including a power input component (4-2), a hexagonal drive shaft (4-14), a main cam (4-8), an upper double crank connecting rod (4-13), a lower double crank connecting rod (4-7), a crank connecting rod connecting plate (4-6), a compensation limit slide rod (4-9), a compensation limit shaft (4-10), and a duckbill planting device (4-12). The upper double crank connecting rod (4-13) and the lower double crank connecting rod (4-7) are oscillatingly mounted on the power input component (4-2). The transmission system (5) includes a walking transmission and a transplanting transmission.

2. The three-row self-propelled salvia miltiorrhiza transplanting machine according to claim 1, characterized in that: The seedling feeding mechanism (3) includes a seedling cup body (3-11), a drive shaft (3-1), a bearing with a square seat (3-8), a driven shaft (3-2), an upper left sprocket (3-6), an upper right sprocket (3-25), an upper sprocket chain (3-27), a lower left sprocket (3-7), a lower right sprocket (3-26), a lower sprocket chain (3-28), a base (3-4), and a top plate (3-3); the transplanting mechanism (4) is installed on the frame (1), and the bottom discharge hole of the base (3-4) and the top feed hole of the duckbill planting device (4-12) correspond to each other.

3. The three-row miniature self-propelled Salvia miltiorrhiza transplanter according to claim 1, characterized in that: The walking mechanism (2) is connected to the drive shaft of the engine (5-1) through the walking reducer (5-6). The transplanting transmission rotates the hexagonal drive shaft (4-14) mounted on the frame (1) through the transplanting reducer (5-3). The hexagonal drive shaft (4-14) drives the duckbill planting device (4-12) to work through the power input component (4-2) of the transplanting mechanism (4). The hexagonal drive shaft (4-14) drives the drive shaft (3-1) to rotate through the seedling transmission assembly.

4. A three-row miniature self-propelled Salvia miltiorrhiza transplanter according to claim 1, characterized in that: The transplanting mechanism (4) consists of three sets of planting mechanisms, which can complete the transplanting operation of three rows of staggered transplanting in one ridge; each set of planting mechanisms includes a power input component (4-2), a hexagonal drive shaft (4-14), a main cam (4-8), an upper double crank connecting rod (4-13), a lower double crank connecting rod (4-7), a crank connecting rod connecting plate (4-6), a compensation limit shaft (4-10), and a duckbill planting device (4-12); the power input component (4-2) is connected to the hexagonal drive shaft (4-14), the power input component (4-2) includes three gears to transmit power, the main cam (4-8) is connected to the third gear through a shaft and rotates in the same direction as the gear, the outside of the power input component (4-2) is connected to the rear base plate (4-4) through a connecting sleeve (4-3), and the upper end of the upper double crank connecting rod (4-13) is connected to the power input component (4-2) through bolts. The upper double-crank connecting rod (4-13) can swing left and right. The lower end of the upper double-crank connecting rod (4-13) is connected to the lower double-crank connecting rod (4-7) through a crank connecting rod connecting plate (4-6). The lower end of the lower double-crank connecting rod (4-7) is connected to the duckbill planting device (4-12) through a crank connecting rod connecting plate (4-6). A compensation limiting slide rod (4-9) is installed on the main cam (4-8). 9) The lower end is connected to the upper end of the lower double crank connecting rod (4-7). The transplanting mechanism (4) drives the upper double crank connecting rod (4-13) and the lower double crank connecting rod (4-7) to swing through the rotation of the main cam (4-8). Through the action of the compensation limit slide rod (4-9) and the compensation limit shaft (4-10), the duckbill planting device (4-12) completes the accurate transplanting action. The up and down stroke of the planting mechanism can reach about 320mm.

5. A three-row miniature self-propelled Salvia miltiorrhiza transplanter according to claim 3, characterized in that: The seedling feeding transmission assembly consists of an upper bevel gear (3-19), a lower bevel gear (3-20), a seedling feeding turntable connecting sprocket (3-22), a drive shaft (3-21), and a seedling feeding transmission chain. The hexagonal drive shaft (4-14) drives the seedling feeding turntable connecting sprocket (3-22) to rotate through the seedling feeding transmission chain. The lower bevel gear (3-20) on the front side of the seedling feeding turntable connecting sprocket (3-22) meshes with the upper bevel gear (3-19) to transmit power to the drive shaft (3-1) of the seedling feeding mechanism (3).

6. A three-row miniature self-propelled Salvia miltiorrhiza transplanter according to claim 1, characterized in that: The traveling mechanism (2) includes a traveling reducer (5-6), a shaft connecting device, a height adjusting device (1-3), and a drive wheel (2-1). The traveling reducer (5-6) has a built-in clutch that enables neutral, reverse, and gear shifting. The two ends of the traveling reducer (5-6) are connected to the height adjusting device (1-3) by the shaft connecting device, and the drive wheel (2-1) is connected to the lower end of the height adjusting device (1-3) via a lower hexagonal shaft (2-9). The shaft connecting device includes an inner hexagonal shaft (2-12) of the traveling mechanism and an outer sleeve (2-6) for the hexagonal shaft. The inner hexagonal shaft (2-12) of the traveling mechanism... 2) The left end is connected to the lower drive shaft of the travel reducer (5-6) via a hexagonal shaft sleeve (2-6) and bolts, and the right end is connected to the height adjustment device (1-3) via a flange (2-7); the height adjustment device (1-3) includes a front plate (2-2) of the travel device housing, a travel device housing (2-3), a rear plate (2-4) of the travel device housing, and a height adjustment plate (2-5). The height adjustment plate (2-5) is installed at the rear end of the rear plate (2-4) of the travel device housing, and the travel device housing (2-3) is installed between the front plate (2-2) and the rear plate (2-4) of the travel device housing.

7. A three-row miniature self-propelled Salvia miltiorrhiza transplanter according to claim 6, characterized in that: The height adjustment device (1-3) is connected to the flange (2-7) with bolts in different holes to realize the height adjustment of the walking mechanism (2); the height adjustment device (1-3) includes a height adjustment plate (2-5), a rear plate of the walking device housing (2-4), a walking device housing (2-3), a front plate of the walking device housing (2-2), an upper sprocket (2-11) of the walking mechanism, a lower sprocket (2-10) of the walking mechanism, a chain, and a lower hexagonal shaft (2-9).

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