Rice transplanter with adjustable paddy field wheel height

Abstract

The present invention relates to the technical field of agricultural machinery, and more particularly to a rice transplanter with adjustable paddy field wheel height, comprising two paddy field wheel groups on a rice transplanter body, each paddy field wheel group consisting of two paddy field wheels, the two paddy field wheels in the same group being connected via a wheel axle transmission, and further comprising a deck, a frame, a rotating and lifting mechanism, a transmission assembly, and a transmission box; the paddy field wheel is provided with a connecting shaft, the connecting shaft being connected to the wheel axle via a transmission assembly, the connecting shaft and the wheel axle being connected to the transmission box via bearings and bearing seats, respectively. The present invention, by providing a transmission assembly, can achieve switching between the wheel axle driving the rotating and lifting mechanism and the paddy field wheel, thereby achieving both the movement of the rice transplanter and the height adjustment of the rice transplanter deck relative to the paddy field wheel through a single drive source; the transmission structure is simple, the motion switching is convenient, and the height of the rice transplanter deck can be quickly adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a rice transplanter with adjustable paddy field wheel height. Background Art

[0002] The rice transplanters currently used mostly use a power device at the front of the rice transplanter to drive two paddy field wheels with pins to drive the entire rice transplanter to move in the paddy field, and the rice transplanting operation is carried out through the power-transmitted rice transplanting mechanism. In addition, it is necessary to ensure that the entire bottom surface of the rice transplanter body and the rice boat board located behind the body are in good contact with the surface of the field mud in the rice field to ensure the smooth progress of the rice transplanting operation. Compared with manual transplanting or transplanting operations using a human transplanter, this rice transplanting method is easy to operate and use, and improves the efficiency of the rice transplanting operation.

[0003] However, due to the different transplanting habits, various rice field conditions and transplanting environments in different places, the mud conditions in the rice fields are also different. As a result, the depth of the mud feet in the rice fields is different, which leads to different depths of the paddy field wheels inserted into the mud in different rice fields. The installation of the paddy field wheels on the rice transplanter currently adopts a wheel shaft connected to the output of the speed change mechanism on the rice transplanter, such as Figure 1 As shown, the paddy wheel 1 is directly connected to the axle 2. This connection method fixes the relative positions of the paddy wheel, the axle, and the transplanter body. Therefore, if the paddy wheel's prongs are inserted into the paddy field at different depths, the transplanter body and the boat deck will move relative to the paddy field surface, ultimately resulting in uneven planting depths. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a rice transplanter with adjustable paddy field wheel height. By setting a transmission component, the wheel axle can be switched to the rotating lifting mechanism and the paddy field wheel drive, so that the two actions of rice transplanter movement and rice transplanter board height adjustment relative to the paddy field wheel can be realized through a single drive source; the transmission structure is simple and the motion switching is convenient, which can realize the rapid adjustment of the rice transplanter board height.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] A rice transplanter with adjustable paddy wheel height comprises two paddy wheel groups on a rice transplanter body, each paddy wheel group comprises two paddy wheels, the two paddy wheels in the same group are connected via a wheel shaft transmission, and further comprises a shipboard, a frame, a rotating lifting mechanism, a transmission assembly and a transmission box;

[0007] The paddy wheel is provided with a connecting shaft, which is connected to the wheel axle through a transmission assembly, and the connecting shaft and the wheel axle are connected to the transmission box through bearings and bearing seats respectively;

[0008] The first end of the rotating lifting mechanism extends into the transmission box, and the rotating lifting structure is rotatably connected to the transmission box. The second end of the rotating lifting mechanism is connected to the frame. The shipboard is arranged between the transmission box and the frame and is in transmission connection with the rotating lifting mechanism.

[0009] The transmission assembly is connected to the wheel axle, and the transmission assembly can be slidably connected along the axial direction of the wheel axle. When the transmission assembly moves toward the connecting shaft, the transmission assembly is respectively connected to the wheel axle and the connecting shaft. When the wheel axle rotates, the connecting shaft rotates synchronously; when the transmission assembly moves toward the wheel axle, the transmission assembly is respectively connected to the wheel axle and the rotating lifting mechanism. When the wheel axle rotates, the rotating lifting mechanism rotates synchronously.

[0010] Furthermore, the rotating lifting mechanism includes a lead screw and a slider matched with the lead screw, the lead screw is rotatably connected to the transmission box through a bearing, the top end of the lead screw is connected to the frame, and the bottom end of the lead screw extends into the transmission box;

[0011] The slider is connected to the ship board.

[0012] Furthermore, the transmission assembly includes a transmission rod and a transmission bevel gear arranged on the transmission rod, the cross section of the transmission rod is non-circular, the end of the connecting shaft close to the wheel axle is provided with a first transmission hole adapted to the transmission rod, and the end of the wheel axle close to the connecting shaft is provided with a second transmission hole adapted to the transmission rod;

[0013] The bottom end of the lead screw is provided with a driven bevel gear adapted to the transmission bevel gear;

[0014] The first end of the transmission rod is slidably disposed in the second transmission hole, and the second end of the transmission rod is disposed outside the second transmission hole. When the transmission rod slides along the axial direction of the wheel axle, the second end of the transmission rod enters or exits the first transmission hole.

[0015] A magnetic attraction mechanism is provided between the bottom of the second transmission hole and the transmission rod, and a reset member is provided between the transmission rod and the magnetic attraction mechanism. The transmission rod is made of magnetic material. When the magnetic attraction mechanism is energized, a magnetic force is generated. Under the action of the magnetic force, the transmission rod moves axially toward the direction close to the magnetic attraction mechanism until the transmission bevel gear and the driven bevel gear are engaged; when the magnetic attraction mechanism is de-energized, the second end of the transmission rod enters the first transmission hole under the action of the reset member.

[0016] Furthermore, the magnetic attraction mechanism includes a solenoid and an iron core arranged in the solenoid, and the wire outside the solenoid is connected in series with the power supply and the switch to form a closed circuit.

[0017] Furthermore, the reset element is a spring.

[0018] Furthermore, a protection resistor is included, and the protection resistor is connected in series with the power supply and the switch.

[0019] Furthermore, the switch is a button switch or a foot switch.

[0020] Furthermore, the magnetic material is a ferromagnetic material.

[0021] The beneficial effects of the present invention are:

[0022] The present invention can realize the switching of the wheel axle to the rotating lifting mechanism and the paddy field wheel drive by arranging a transmission component, and then realize the two actions of the rice transplanter moving and the height adjustment of the rice transplanter board relative to the paddy field wheel through a single driving source; the transmission structure is simple and the motion switching is convenient, and the rapid adjustment of the rice transplanter board height can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of a paddy field wheel in the prior art;

[0024] Figure 2 Schematic diagram of the structure of a rice transplanter with adjustable paddy field wheel height according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 An enlarged schematic diagram of the local A in the middle;

[0026] Figure 4 This is the circuit diagram of the solenoid;

[0027] Figure 5 A side view of a rice transplanter with adjustable paddy field wheel height;

[0028] In the figure, 1. paddy field wheel; 2. axle; 3. shipboard; 4. frame; 5. rotating lifting mechanism; 6. transmission box; 7. connecting shaft; 8. transmission assembly; 9. lead screw; 10. slider; 11. transmission rod; 12. transmission bevel gear; 13. first transmission hole; 14. second transmission hole; 15. reset member; 16. solenoid; 17. switch; 18. protection resistor; 19. driven bevel gear. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0030] See Figure 2-Figure 5 , the present invention provides a technical solution:

[0031] Example:

[0032] A rice transplanter with adjustable paddy wheel height, comprising two paddy wheel groups 1 on a rice transplanter body, each paddy wheel group 1 consisting of two paddy wheels 1, the two paddy wheels 1 in the same group being connected by a wheel axle 2, and further comprising a shipboard 3, a frame 4, a rotating lifting mechanism 5, a transmission assembly 8, and a transmission box 6;

[0033] The paddy wheel 1 is provided with a connecting shaft 7, which is connected to the wheel axle 2 through a transmission assembly 8 (wherein the connecting shaft 7 is coaxial with the wheel axle 2), and the connecting shaft 7 and the wheel axle 2 are connected to the transmission box 6 through bearings and bearing seats respectively;

[0034] The first end of the rotating lifting mechanism 5 extends into the transmission box 6, and the rotating lifting structure is rotatably connected to the transmission box 6. The second end of the rotating lifting mechanism 5 is connected to the frame 4. The shipboard 3 is arranged between the transmission box 6 and the frame 4, and the shipboard 3 is transmission-connected to the rotating lifting mechanism 5.

[0035] The transmission assembly 8 is connected to the wheel axle 2, and the transmission assembly 8 can be slidably connected along the axial direction of the wheel axle 2. When the transmission assembly 8 moves toward the connecting shaft 7, the transmission assembly 8 is respectively connected to the wheel axle 2 and the connecting shaft 7. When the wheel axle 2 rotates, the connecting shaft 7 rotates synchronously (at this time, the rice transplanter moves); when the transmission assembly 8 moves toward the wheel axle 2, the transmission assembly 8 is respectively connected to the wheel axle 2 and the rotating lifting mechanism 5. When the wheel axle 2 rotates, the rotating lifting mechanism 5 rotates synchronously (at this time the ship board 3 rises / falls).

[0036] The rotating lifting mechanism 5 includes a screw 9 and a slider 10 that cooperates with the screw 9. The screw 9 is rotatably connected to the transmission box 6 through a bearing. The top end of the screw 9 is connected to the frame 4, and the bottom end of the screw 9 extends into the transmission box 6.

[0037] The slider 10 is connected to the shipboard 3 .

[0038] 1. The lead screw 9 and slider 10 may be, but are not limited to, a ball screw 9 and slider 10 structure. The limiting structure of a conventional lead screw 9 and slider 10 structure is not shown in the figure. 2. The frame 4 is a rectangular frame structure. 3. The four transmission boxes 6 on the front and rear axles 2 are connected by limiting rods to form a rectangular frame structure. 4. The rice transplanter is conventional in structure, and the remaining components are not shown in the figure.

[0039] like Figure 3As shown, the transmission assembly 8 includes a transmission rod 11 and a transmission bevel gear 12 provided on the transmission rod 11. The cross-section of the transmission rod 11 is non-circular (a regular polygon). The end of the connecting shaft 7 close to the wheel axle 2 is provided with a first transmission hole 13 adapted to the transmission rod 11. The end of the wheel axle 2 close to the connecting shaft 7 is provided with a second transmission hole 14 adapted to the transmission rod 11.

[0040] The bottom end of the lead screw 9 is provided with a driven bevel gear 19 adapted to the transmission bevel gear 12;

[0041] The first end of the transmission rod 11 is slidably disposed in the second transmission hole 14, and the second end of the transmission rod 11 is disposed outside the second transmission hole 14. When the transmission rod 11 slides axially along the wheel axle 2, the second end of the transmission rod 11 enters or exits the first transmission hole 13.

[0042] like Figure 2-Figure 4 As shown, a magnetic attraction mechanism is provided between the bottom of the second transmission hole 14 and the transmission rod 11, and a reset member 15 (the reset member 15 is a spring) is provided between the transmission rod 11 and the magnetic attraction mechanism. The transmission rod 11 is made of a magnetic material (the magnetic material is a ferromagnetic material. Among them, the ferromagnetic material is a prior art, and the specific principle and specific selection are prior art, which will not be repeated here). When the magnetic attraction mechanism is energized, a magnetic force is generated, and the transmission rod 11 moves axially toward the direction close to the magnetic attraction mechanism under the action of the magnetic force until the transmission bevel gear 12 is engaged with the driven bevel gear 19; when the magnetic attraction mechanism is de-energized, the second end of the transmission rod 11 enters the first transmission hole 13 under the action of the reset member 15.

[0043] The magnetic attraction mechanism includes a solenoid 16 and an iron core disposed in the solenoid 16 . The wire outside the solenoid 16 is connected in series with a power supply and a switch 17 to form a closed circuit.

[0044] The invention also includes a protection resistor 18, which is connected in series with the power supply and the switch 17. The switch 17 is a button switch 17 or a foot switch 17.

[0045] 1. Switch 17 is a normally open switch 17. 2. In this embodiment, the transmission rod 11 has a regular hexagonal cross-section, and the corresponding first transmission hole 13 and second transmission hole 14 also have hexagonal cross-sections. 3. The axle 2 is driven by a motor, which can be, but is not limited to, located inside or outside the transmission case 6. The axle 2 and the motor can be, but are not limited to, driven by a gear set.

[0046] Working Principle: When switch 17 is closed, the circuit formed between the solenoid 16 wire and the power supply is disconnected, and the iron core generates no magnetic field. Drive rod 11, acting under the action of a spring, extends into connecting shaft 7. When the motor drives axle 2 to rotate, drive rod 11 rotates synchronously with axle 2 due to the action of second drive hole 14. Rotation of drive rod 11 also drives connecting shaft 7 through first drive hole 13, and the paddy field wheel 1 connected to connecting shaft 7 rotates synchronously. The rice transplanter now moves and can carry out normal transplanting operations.

[0047] When the height of the boat plate 3 needs to be adjusted for transplanting rice seedlings in different paddy fields, the switch 17 is pressed or stepped on, which closes the circuit of the solenoid 16. At this time, the iron core generates a magnetic field, and the transmission rod 11 moves axially toward the iron core under the action of the magnetic force, compressing the spring in the process.

[0048] The transmission rod 11 moves until the second end of the transmission rod 11 exits the first transmission hole 13 and the transmission bevel gear 12 on the transmission rod 11 meshes with the driven bevel gear 19 on the lead screw. At this time, when the starting motor drives the wheel shaft 2 to rotate, the transmission rod 11 drives the lead screw 9 to rotate through the transmission bevel gear 12 and the driven bevel gear 19. When the lead screw 9 rotates, the slider 10 on it moves axially along the lead screw 9, thereby driving the deck 3 to rise and fall to complete the height adjustment of the deck 3 relative to the paddy wheel 1.

[0049] After the height adjustment of deck 3 is complete, switch 17 is turned off, de-energizing the circuit containing the wires of solenoid 16, eliminating the magnetic field and the axial force exerted on transmission rod 11. Transmission rod 11 is reset by the spring. When the second end of transmission rod 11 re-enters first transmission hole 13 of connecting shaft 7, the motor is started to activate the rice transplanter. During the aforementioned process, as transmission rod 11 is reset by the spring, second transmission hole 14 and transmission rod 11 radially limit transmission rod 11, serving as a guide for the reset of the second reset rod.

[0050] The present invention can realize the switching of the wheel axle to the rotating lifting mechanism and the paddy field wheel drive by arranging a transmission component, and then realize the two actions of the rice transplanter moving and the height adjustment of the rice transplanter board relative to the paddy field wheel through a single driving source; the transmission structure is simple and the motion switching is convenient, and the rapid adjustment of the rice transplanter board height can be realized.

[0051] The foregoing description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the appended claims.

Claims

1. A rice transplanter with adjustable paddy wheel height, comprising two paddy wheel groups on a rice transplanter body, each paddy wheel group consisting of two paddy wheels, the two paddy wheels in the same group being connected by a wheel axle transmission, characterized in that: It also includes a shipboard, a frame, a rotating lifting mechanism, a transmission assembly and a transmission box; The paddy wheel is provided with a connecting shaft, which is connected to the wheel axle through a transmission assembly, and the connecting shaft and the wheel axle are connected to the transmission box through bearings and bearing seats respectively; The first end of the rotating lifting mechanism extends into the transmission box, and the rotating lifting structure is rotatably connected to the transmission box. The second end of the rotating lifting mechanism is connected to the frame. The shipboard is arranged between the transmission box and the frame and is in transmission connection with the rotating lifting mechanism. The transmission assembly is connected to the wheel axle, and the transmission assembly can be slidably connected along the axial direction of the wheel axle. When the transmission assembly moves toward the connecting shaft, the transmission assembly is respectively connected to the wheel axle and the connecting shaft. When the wheel axle rotates, the connecting shaft rotates synchronously. When the transmission assembly moves toward the wheel axle, the transmission assembly is respectively connected to the wheel axle and the rotating lifting mechanism. When the wheel axle rotates, the rotating lifting mechanism rotates synchronously. The rotary lifting mechanism includes a lead screw and a slider matched with the lead screw, the lead screw is rotatably connected to the transmission box through a bearing, the top end of the lead screw is connected to the frame, and the bottom end of the lead screw extends into the transmission box; The slider is connected to the ship board; The transmission assembly includes a transmission rod and a transmission bevel gear arranged on the transmission rod. The cross section of the transmission rod is non-circular. The end of the connecting shaft close to the wheel axle is provided with a first transmission hole adapted to the transmission rod. The end of the wheel axle close to the connecting shaft is provided with a second transmission hole adapted to the transmission rod. The bottom end of the lead screw is provided with a driven bevel gear adapted to the transmission bevel gear; The first end of the transmission rod is slidably disposed in the second transmission hole, and the second end of the transmission rod is disposed outside the second transmission hole. When the transmission rod slides along the axial direction of the wheel axle, the second end of the transmission rod enters or exits the first transmission hole. A magnetic attraction mechanism is provided between the bottom of the second transmission hole and the transmission rod, and a reset member is provided between the transmission rod and the magnetic attraction mechanism. The transmission rod is made of magnetic material. When the magnetic attraction mechanism is energized, a magnetic force is generated. Under the action of the magnetic force, the transmission rod moves axially toward the direction close to the magnetic attraction mechanism until the transmission bevel gear and the driven bevel gear are engaged; when the magnetic attraction mechanism is de-energized, the second end of the transmission rod enters the first transmission hole under the action of the reset member.

2. The rice transplanter with adjustable paddy field wheel height according to claim 1, characterized in that: The magnetic attraction mechanism includes a solenoid and an iron core arranged in the solenoid. The wire outside the solenoid is connected in series with a power supply and a switch to form a closed circuit.

3. The rice transplanter with adjustable paddy field wheel height according to claim 1, characterized in that: The reset element is a spring.

4. The rice transplanter with adjustable paddy field wheel height according to claim 2, characterized in that: It also includes a protection resistor, which is connected in series with the power supply and the switch.

5. The rice transplanter with adjustable paddy field wheel height according to claim 2, characterized in that: The switch is a push button switch or a foot switch.

6. The rice transplanter with adjustable paddy field wheel height according to claim 1, characterized in that: The magnetic material is a ferromagnetic material.

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