A rice transplanter

Abstract

The utility model provides a kind of rice transplanter, including rack, crossbeam, rear suspension, oil cylinder, control valve assembly, float, profiling connecting assembly, sensitivity adjustment assembly, sensitivity adjustment assembly is used to adjust sensitivity with profiling connecting assembly, sensitivity adjustment assembly includes motor, gear disc assembly, motor is fixed to rack to output power, gear disc assembly is connected with motor and is rotated by motor drive, gear disc assembly is used to realize swing arm rotation to different positions.The utility model provides a kind of rice transplanter, by swing arm rotation to different positions, change the size of empty stroke between valve action plate and control valve assembly to realize the sensitivity adjustment of float, the greater the sensitivity is lower, the smaller the sensitivity is higher.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a rice transplanter. Background Technology

[0002] Currently, ride-on rice transplanters require a human operator to drive and steer them. Existing rice transplanters do not achieve full mechanization. During actual operation, the floating platform needs to conform to the terrain to synchronize the height of the rear suspension, ensuring consistent planting depth. The response time between the rear suspension's raising and lowering and the floating platform's adjustments varies depending on factors such as different field conditions. In related technologies, high-speed rice transplanters use a handle and toothed plate structure for sensitivity adjustment. Adjusting the handle's position within the toothed plate allows for different sensitivity levels, but this does not enable unmanned control. Therefore, with the increasing demand for automated rice transplanters, finding a more convenient and automated way to adjust sensitivity is a crucial issue to consider.

[0003] Therefore, it is necessary to provide a rice transplanter to overcome the defects mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a rice transplanter that achieves electronic control adjustment of the transplanter's sensitivity by focusing on the design of the contour-following connection component and the sensitivity adjustment component. This provides an optimized solution for the unmanned control of the rice transplanter through automated adjustment, which helps to further realize the unmanned operation of the rice transplanter.

[0005] According to one aspect of the present invention, a rice transplanter is provided, comprising a driving unit, a frame, a crossbeam, a rear suspension unit, a hydraulic cylinder, a control valve assembly, a float, a contour-following connection assembly, and a sensitivity adjustment assembly. The frame is located at the bottom of the driving unit, the crossbeam is located behind the frame, the rear suspension unit is located above the crossbeam, the hydraulic cylinder is connected to the rear suspension unit to drive the rear suspension unit to raise and lower to adjust the transplanting depth, the control valve assembly is connected to the hydraulic cylinder to control the operation of the hydraulic cylinder, the float is located below the rear suspension unit, and the contour-following connection assembly is located on the frame. The contour-following connection assembly is connected to the float and the control valve assembly respectively to realize the synchronous rise of the rear suspension unit as the float tilts upward.

[0006] The contouring connection assembly includes a contouring cable, a rotating shaft, a swing arm, a valve connecting arm, a tension spring, a connecting rod, and a valve actuating plate. One end of the contouring cable is connected to the floating vessel. The rotating shaft is fixed to the frame. The swing arm is rotatably sleeved on the rotating shaft and connected to the other end of the contouring cable. The valve connecting arm rotates with the rotation of the swing arm. The tension spring is connected to both the swing arm and the frame. One end of the connecting rod is rotatably connected to the lower end of the valve connecting arm. One end of the valve actuating plate is rotatably connected to the other end of the connecting rod. The other end of the valve actuating plate contacts or disconnects from the control valve assembly to control the operation of the control valve assembly.

[0007] The sensitivity adjustment component and the contouring connection component are used to adjust the sensitivity. The sensitivity adjustment component includes a motor and a gear plate assembly. The motor is fixed to the frame to output power. The gear plate assembly is connected to the motor and rotates through the motor drive. The gear plate assembly is used to rotate the swing arm to different positions.

[0008] By altering the free travel between the valve actuating plate and the control valve assembly using the above method, the duration of valve core compression is controlled, thereby adjusting the float's sensitivity. A larger free travel requires a greater upward tilt of the float, a longer valve core compression time, a later rise of the rear suspension, and lower sensitivity; conversely, a smaller free travel requires a smaller upward tilt of the float, a shorter valve core compression time, an earlier rise of the rear suspension, and higher sensitivity.

[0009] The above solutions will help to automate the adjustment of the sensitivity of rice transplanters, further enabling unmanned operation of rice transplanters and improving operational efficiency and convenience.

[0010] Preferably, the contour pull cable includes a pull cable sleeve and a core wire placed in the pull cable sleeve, with one end of the core wire connected to the valve connecting arm.

[0011] Preferably, the toothed disc assembly includes a toothed disc, a toothed disc pin, a limiting member, a torsion spring, and a pull wire connecting arm. The toothed disc is connected to a motor and rotates via motor drive. The toothed disc pin is fixed to both sides of the toothed disc and rotatably connected to the frame. The limiting member is fixed to the toothed disc, the torsion spring is sleeved on the toothed disc pin, and the pull wire connecting arm is rotatably sleeved on the toothed disc pin. The pull wire connecting arm abuts against the limiting member through the force of the torsion spring and rotates synchronously with the toothed disc. The upper end of the pull wire connecting arm is connected to the end of the pull wire sleeve furthest from the float. This design helps to automate the adjustment of the rice transplanter's sensitivity and, at the same time, helps to prevent damage to the contour pull wire and toothed disc caused by abnormal pulling of the contour pull wire.

[0012] Preferably, the frame includes an insertion control panel frame, and the sensitivity adjustment component is located below the insertion control panel frame.

[0013] Preferably, the sensitivity adjustment assembly further includes an adjustment bracket and a connecting bracket. The adjustment bracket is located on one side of the gear plate assembly and is fixedly connected to the insertion control panel frame by bolts. The connecting bracket is located on the other side of the gear plate assembly, relatively away from the adjustment bracket, and is fixedly connected to the insertion control panel. The gear plate assembly is rotatably connected between the adjustment bracket and the connecting bracket. Further, the adjustment bracket is located on one side of the gear plate and is fixedly connected to the insertion control panel frame by bolts. The connecting bracket is located on the other side of the gear plate, relatively away from the adjustment bracket, and is fixedly connected to the insertion control panel. The gear plate is rotatably connected between the adjustment bracket and the connecting bracket.

[0014] Preferably, the sensitivity adjustment assembly further includes a sleeve, which is fixedly installed in the connecting bracket, and a gear pin is installed in the sleeve, with the gear rotatably connected between the sleeve and the adjustment bracket.

[0015] Preferably, the sensitivity adjustment component further includes an angle sensor, which is placed on the adjustment bracket.

[0016] Preferably, the contouring connection assembly further includes a contouring rod, a contouring arm, a rotating pin, and a contouring arm bracket. The lower end of the contouring rod is connected to the front end of the pontoon, the contouring arm bracket is connected to the crossbeam, the lower end of the contouring arm is rotatably connected to the upper end of the contouring rod, the upper end of the contouring arm is connected to the other end of the wire core, and the middle position of the contouring arm is rotatably connected to the contouring arm bracket via the rotating pin. The end of the pull cable sleeve near the pontoon is fixed to the upper end of the contouring arm bracket. When the front end of the pontoon is subjected to force and tilts upward, the contouring rod drives the contouring arm to rotate around the center of the rotating pin, causing the contouring arm to pull the wire core and drive the swing arm to rotate, further driving the valve connecting arm to rotate, and finally controlling the control valve assembly to move, so as to realize the synchronous rise of the rear suspension part when the pontoon tilts upward.

[0017] Preferably, the tension spring is placed on the side of the valve connecting arm that is relatively far away from the wire core, and the valve connecting arm is kept in balance by the tension of the tension spring and the tension of the wire core.

[0018] Preferably, the control valve assembly includes a valve body, a valve core, and a compression spring sleeved on the valve core. During rice transplanting, the swing arm is pulled by the contour pull line, which drives the valve connecting arm to rotate. The valve connecting arm drives the connecting rod to move, which in turn drives the valve action plate to press the valve core. The compression spring is compressed, thereby controlling the action of the control valve assembly to drive the oil cylinder to lift. When it lowers, the contour pull line no longer pulls the swing arm. The restoring force of the compression spring drives the valve action plate to rotate in the opposite direction, which drives the connecting rod to move in the opposite direction. This causes the valve connecting arm to rotate in the opposite direction around the pivot and finally return to its original position.

[0019] Preferably, a rice transplanter further includes a display screen, a controller, an angle sensor, and an adjustment knob or adjustment button. The sensitivity level is adjusted by adjusting the knob or adjustment button, and a signal is input to the controller. The controller outputs an execution signal to the motor based on the angle signal from the angle sensor. The motor drives the gear plate to rotate and adjust the valve connecting arm accordingly, thereby realizing sensitivity adjustment.

[0020] This utility model provides a rice transplanter, including a driver's unit, a frame, a crossbeam, a rear suspension unit, a hydraulic cylinder, a control valve assembly, a float, a contour connection assembly, and a sensitivity adjustment assembly. The sensitivity of the float is adjusted by changing the idle stroke between the valve actuating plate and the control valve assembly. The larger the idle stroke, the lower the sensitivity; the smaller the idle stroke, the higher the sensitivity. The sensitivity adjustment assembly helps to achieve automated adjustment of the rice transplanter's sensitivity, which helps to further realize unmanned operation of the rice transplanter. Attached Figure Description

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 This is a partial side view of the structure of a rice transplanter;

[0023] Figure 2 This is an axonometric view of a partial structure of a rice transplanter;

[0024] Figure 3 A schematic diagram of the sensitivity adjustment component from one perspective;

[0025] Figure 4 This is a schematic diagram of the sensitivity adjustment component from another perspective.

[0026] Explanation of icon numbers:

[0027] 1. Floating vessel; 2. Crossbeam; 3. Rear suspension unit; 4. Contouring connection assembly; 5. Hydraulic cylinder; 6. Control valve assembly; 7. Sensitivity adjustment assembly; 8. Frame; 70. Gear assembly; 71. Motor; 72. Angle sensor; 73. Adjustment bracket; 74. Sleeve; 75. Connecting bracket; 401. Contouring rod; 402. Contouring arm; 403. Contouring arm bracket; 404. Contouring cable; 405. Swing arm; 406. Tension spring; 407. Rotating shaft; 408. Valve connecting arm; 409. Connecting rod; 410. Valve actuating plate; 411. Rotating pin; 701. Gear disc; 702. Pull cable connecting arm; 703. Limiting component; 704. Torsion spring; 705. Gear disc pin; 601. Valve body; 602. Compression spring; 603. Valve core; 801. Inserted control panel frame; 4041. Wire core; 4042. Pull cable sleeve. Detailed Implementation

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

[0029] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0030] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0034] The embodiments for carrying out this application will be described with reference to the accompanying drawings. It should be noted that, in the following description, the direction of the straight line F is defined as the "front" of the rice transplanter (refer to...). Figure 1 Set the direction of line B as the "back" of the rice transplanter (refer to...). Figure 1 ).

[0035] See Figures 1 to 4As shown, this embodiment provides a rice transplanter, including a driver's unit (not shown), a frame 8, a crossbeam 2, a rear suspension unit 3, a hydraulic cylinder 5, a control valve assembly 6, a float 1, a contour-following connection assembly 4, and a sensitivity adjustment assembly 7. The frame 8 is located at the bottom of the driver's unit. The frame 8 includes a planting control panel frame 801 fixed above the frame 8. The crossbeam 2 is located behind the frame 8. The rear suspension unit 3 is located above the crossbeam 2. The hydraulic cylinder 5 is connected to the rear suspension unit 3 to drive the rear suspension unit 3 to lift and lower to adjust the planting depth. The control valve assembly 6 is connected to the hydraulic cylinder 5 to control the operation of the hydraulic cylinder 5. The float 1 is located below the rear suspension unit 3. The contour-following connection assembly 4 is located on the frame 8. The contour-following connection assembly 4 is connected to the float 1 and the control valve assembly 6 respectively to realize the synchronous rise of the rear suspension unit 3 when the float 1 tilts upward.

[0036] See Figure 1 As shown, the contouring connection assembly 4 includes a contouring pull line 404, a rotating shaft 407, a swing arm 405, a valve connecting arm 408, a tension spring 406, a connecting rod 409, and a valve actuating plate 410. One end of the contouring pull line 404 is connected to the floating vessel 1, the rotating shaft 407 is fixed to the frame 8, and the swing arm 405 is rotatably sleeved on the rotating shaft 407 and connected to the other end of the contouring pull line 404.

[0037] After the swing arm 405 rotates to the position where it abuts against the valve connecting arm 408, it continues to rotate. At this time, the valve connecting arm 408 rotates with the swing arm 405. The tension spring 406 is connected to the swing arm 405 and the frame 8 respectively. One end of the connecting rod 409 is rotatably connected to the lower end of the valve connecting arm 408. One end of the valve actuating plate 410 is rotatably connected to the other end of the connecting rod 409. The other end of the valve actuating plate 410 is in contact with or disconnected from the control valve assembly 6 to control the action of the control valve assembly 6.

[0038] Furthermore, the pivot 407 is fixed to the insertion control panel frame 801; the contoured pull cable 404 includes a pull cable sleeve 4042 and a wire core 4041 placed in the pull cable sleeve 4042, with the end of the wire core 4041 away from the float 1 connected to the swing arm 405; one end of the tension spring 406 is connected to the swing arm 405, and the other end is connected to the insertion control panel frame 801, with the tension spring 406 placed on the side of the valve connecting arm 408 away from the wire core 4041, and the valve connecting arm 408 is balanced by the tension of the tension spring 406 and the tension of the wire core 4041.

[0039] The control valve assembly 6 includes a valve body 601, a valve core 603, and a compression spring 602 sleeved on the valve core 603. During rice transplanting, the contour pull line 404 pulls the swing arm 405, which drives the valve connecting arm 408 to rotate. The valve connecting arm 408 drives the connecting rod 409 to move, which in turn drives the valve action plate 410 to press the valve core 603. The compression spring 602 is compressed, thereby controlling the action of the control valve assembly 6 to drive the oil cylinder 5 to rise. When it falls, the contour pull line 404 no longer pulls the swing arm 405. The restoring force of the compression spring 602 drives the valve action plate 410 to rotate in the opposite direction, which drives the connecting rod 409 to move in the opposite direction. This causes the valve connecting arm 408 to rotate in the opposite direction around the rotating shaft 407 and finally return to its original position.

[0040] See Figure 1 and Figure 2 As shown, the contouring connection assembly 4 also includes a contouring transmission rod 401, a contouring arm 402, a rotating pin 411, and a contouring arm bracket 403. The lower end of the contouring transmission rod 401 is connected to the front end of the float 1, the contouring arm bracket 403 is connected to the crossbeam 2, the lower end of the contouring arm 402 is rotatably connected to the upper end of the contouring transmission rod 401, the upper end of the contouring arm 402 is connected to the other end of the wire core 4041, and the middle position of the contouring arm 402 is rotatably connected to the contouring arm bracket 403 via the rotating pin 411. 03 Connection: The end of the pull cable sleeve 4042 near the floating vessel 1 is fixed to the upper end of the contour arm bracket 403. When the front end of the floating vessel 1 is subjected to force and tilts upward, the contour arm 402 is driven to rotate around the center of the rotating pin 411 through the contour transmission rod 401. This causes the contour arm 402 to pull the wire core 4041, thereby driving the swing arm 405 to rotate, further driving the valve connecting arm 408 to rotate, and finally controlling the control valve assembly 6 to move, so as to realize the synchronous rise of the rear suspension part 3 when the floating vessel 1 tilts upward.

[0041] See Figure 3 As shown, the sensitivity adjustment component 7 is placed on the frame 8. Further, the sensitivity adjustment component 7 is positioned below the insertion control panel frame 801. The sensitivity adjustment component 7 and the contour connection component 4 are used to adjust the sensitivity. The sensitivity adjustment component 7 includes a motor 71 and a gear assembly 70. The motor 71 is fixed to the frame 8 to output power. Further, the motor 71 is fixed to the insertion control panel frame 801. The gear assembly 70 is connected to the motor 71 and rotates through the motor 71. The gear assembly 70 is used to rotate the swing arm 405 to different positions. By rotating the swing arm 405 to different positions, the free stroke between the valve actuation plate 410 and the control valve assembly 6 is changed, thereby controlling the pressing time of the valve core 603 to achieve sensitivity adjustment of the floating vessel 1. The greater the free stroke, the greater the upward tilt angle required for the float 1, the longer the time required to press the valve core 603, the later the rear suspension 3 rises, and the lower the sensitivity; the smaller the free stroke, the smaller the upward tilt angle required for the float 1, the shorter the time required to press the valve core 603, the earlier the rear suspension 3 rises, and the higher the sensitivity.

[0042] See Figure 3 and Figure 4 As shown, the sensitivity adjustment assembly 7 also includes an adjustment bracket 73, a connecting bracket 75, a sleeve 74, and an angle sensor 72. The adjustment bracket 73 is placed on one side of the gear assembly 70 and is fixedly connected to the insertion control panel frame 801 by bolts. The connecting bracket 75 is placed on the other side of the gear assembly 70, which is relatively far away from the adjustment bracket 73, and is fixedly connected to the insertion control panel. The sleeve 74 is fixedly inserted through the connecting bracket 75. The angle sensor 72 is placed on the adjustment bracket 73 to detect the rotation angle of the gear assembly 70.

[0043] The gear assembly 70 includes a gear 701, a gear pin 705, a limiting member 703, a torsion spring 704, and a pull cable connecting arm 702. The gear pin 705 is fixedly disposed on two sides of the gear 701. One end of the gear pin 705 passes through the sleeve 74, and the other end of the gear pin 705 passes through the adjusting bracket 73. The gear 701 is placed between the adjusting bracket 73 and the connecting bracket 75, and is rotatably connected to the adjusting bracket 73 and the connecting bracket 75 respectively through the gear pin 705. Furthermore, the gear 701 is placed between the sleeve 74 and the adjusting bracket 73 and can rotate relative to the sleeve 74 and the adjusting bracket 73. This connection method can limit the position of the gear 701 while ensuring the rotation of the gear 701.

[0044] The limiting member 703 is fixed to the gear disk 701, the torsion spring 704 is sleeved on the gear disk pin 705, and the pull line connecting arm 702 is rotatably sleeved on the gear disk pin 705. Through the force of the torsion spring 704, it abuts against the limiting member 703 and rotates synchronously with the gear disk 701. The upper end of the pull line connecting arm 702 is connected to the end of the pull line sleeve 4042 away from the floating vessel 1. The motor 71 drives the toothed disc 701 to rotate to different positions, causing the end of the pull wire sleeve 4042 away from the float 1 to rotate synchronously to different positions, thereby causing the swing arm 405 to rotate to different positions. By rotating the swing arm 405 to different positions, the size of the idle stroke between the valve action plate 410 and the control valve assembly 6 is changed, thereby controlling the pressing time of the valve core 603, so as to realize the sensitivity adjustment of the float 1, thereby further realizing the automatic adjustment of the sensitivity of the rice transplanter. At the same time, it helps to prevent the toothed disc 701 from being pulled abnormally when the contour pull wire 404 is pulled, which may cause damage to the contour pull wire 404, toothed disc 701, etc.

[0045] A rice transplanter also includes a display screen (not shown), a controller (not shown), an angle sensor 72, and an adjustment knob or adjustment button. The sensitivity level is adjusted by adjusting the knob or adjustment button, and a signal is input to the controller. The controller outputs an execution signal to the motor 71 based on the angle signal from the angle sensor 72. The motor 71 drives the toothed disc 701 to rotate and adjust the valve connecting arm 408 accordingly, thereby realizing sensitivity adjustment.

[0046] This utility model provides a rice transplanter, including a driver's unit, a frame 8, a crossbeam 2, a rear suspension unit 3, a hydraulic cylinder 5, a control valve assembly 6, a float 1, a contour connection assembly 4, and a sensitivity adjustment assembly 7. The sensitivity of the float 1 is adjusted by changing the size of the idle stroke between the valve actuation plate 410 and the control valve assembly 6. The larger the idle stroke, the lower the sensitivity, and the smaller the idle stroke, the higher the sensitivity. The sensitivity adjustment assembly 7 is designed to help achieve automated adjustment of the rice transplanter's sensitivity, which helps to further realize unmanned operation of the rice transplanter.

[0047] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A rice transplanter, characterized in that, include: beam; Rear suspension unit, the rear suspension unit being positioned above the crossbeam; A hydraulic cylinder is connected to the rear suspension unit to drive the rear suspension unit to rise and fall in order to adjust the rice planting depth; A control valve assembly, which is connected to the hydraulic cylinder to control the operation of the hydraulic cylinder; A floating vessel, which is positioned below the rear suspension unit; A contour-following connection assembly is connected to the pontoon and the control valve assembly respectively, so as to realize the synchronous rise of the rear suspension as the pontoon tilts upward; The contour-following connection component includes: A contour-following guy wire, one end of which is connected to the floating vessel; A rotating shaft, which is fixed to the frame; A swing arm, which is rotatably sleeved on the pivot and connected to the other end of the contouring wire; A valve connecting arm, which is rotatably connected to the swing arm; A tension spring, which is connected to the swing arm and the frame respectively; A connecting rod, which is rotatably connected to the valve connecting arm; A valve actuating plate is rotatably connected to the connecting rod, and the valve actuating plate contacts or disconnects from the control valve assembly to control the operation of the control valve assembly; Sensitivity adjustment component, wherein the sensitivity adjustment component and the conformal connection component are used to adjust the sensitivity of the rice transplanter, the sensitivity adjustment component comprising: An electric motor, which is fixed to the frame, is used to output power; A geared disc assembly, which is connected to the motor and rotates by outputting power from the motor; The motor drives the toothed disc assembly to rotate, which in turn rotates the swing arm to different positions, thereby adjusting the amount of free travel between the valve action plate and the control valve assembly. This allows for the adjustment of the rice transplanter's sensitivity; a larger free travel results in lower sensitivity, while a smaller free travel results in higher sensitivity.

2. The rice transplanter as described in claim 1, characterized in that, The contoured pull cable includes a pull cable sleeve and a core wire placed in the pull cable sleeve, with one end of the core wire connected to the valve connecting arm.

3. A rice transplanter as described in claim 2, characterized in that, The gear disk assembly includes: A geared disc, which is connected to the motor and rotates under the drive of the motor; A toothed disc pin is fixedly mounted on two sides of the toothed disc and rotatably connected to the frame. A limiting member, wherein the limiting member is fixed to the gear plate; A torsion spring, which is sleeved on the gear pin; A cable connecting arm is rotatably sleeved on the geared disc pin. The cable connecting arm abuts against the limiting member through the force of the torsion spring and rotates synchronously with the geared disc. The upper end of the cable connecting arm is connected to the end of the cable sleeve away from the pontoon.

4. A rice transplanter as described in claim 3, characterized in that, The frame includes an insertion control panel frame, and the sensitivity adjustment component is located below the insertion control panel frame.

5. A rice transplanter as described in claim 4, characterized in that, The sensitivity adjustment assembly further includes an adjustment bracket and a connecting bracket. The adjustment bracket is placed on one side of the toothed disc and is fixedly connected to the insertion control panel frame by bolts. The connecting bracket is placed on the other side of the toothed disc, which is relatively far from the adjustment bracket, and is fixedly connected to the insertion control panel. The toothed disc is rotatably connected between the adjustment bracket and the connecting bracket.

6. A rice transplanter as described in claim 5, characterized in that, The sensitivity adjustment assembly also includes a sleeve, which is fixedly installed on the connecting bracket. The geared disc pin is installed through the sleeve, and the geared disc is rotatably connected between the sleeve and the adjustment bracket.

7. A rice transplanter as described in claim 6, characterized in that, The sensitivity adjustment assembly also includes an angle sensor, which is placed on the adjustment bracket.

8. A rice transplanter as described in claim 7, characterized in that, The contour-following connection component further includes: A contouring transmission rod is connected to the front end of the floating vessel; A contoured boom support is provided, which is connected to the crossbeam. The end of the cable sleeve near the pontoon is fixed to the upper end of the contoured boom support. Rotate the pivot pin; The contouring arm has two ends connected to the contouring transmission rod and the wire core, respectively, and the contouring arm is rotatably connected to the contouring arm bracket via the rotating pin. When the front end of the floating vessel is subjected to force and tilts upward, the contouring rod drives the contouring arm to rotate around the center of the rotating pin, causing the contouring arm to pull the core wire and drive the swing arm to rotate, which in turn drives the valve connecting arm to rotate, ultimately controlling the control valve assembly to operate, so as to achieve synchronous rise of the rear suspension unit as the floating vessel tilts upward.

9. A rice transplanter as described in claim 8, characterized in that, The control valve assembly includes a valve body, a valve core, and a compression spring fitted onto the valve core. During rice transplanting, a contoured pull line pulls the swing arm, which in turn rotates the valve connecting arm. The valve connecting arm then moves the connecting rod, ultimately causing the valve action plate to press the valve core. The compression spring is compressed, thereby controlling the movement of the control valve assembly to lift the hydraulic cylinder.

10. A rice transplanter as described in claim 1 or 9, characterized in that, It also includes a display screen, a controller, an angle sensor, and an adjustment knob or adjustment button. The sensitivity level is adjusted by the adjustment knob or adjustment button, and a signal is input to the controller. The controller outputs an execution signal to the motor according to the angle signal from the angle sensor. The motor drives the gear plate to rotate and adjust the valve connecting arm accordingly, thereby realizing sensitivity adjustment.

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