Seeding and pressing dislocation return device and seeding unit

Abstract

The application provides a seeding and pressing dislocation callback device and a seeding unit, which comprises a rack, a parallel four-bar mechanism, a seed box, a seed dispenser, a double-disc furrow opener, a motor, a control unit, a pressing adjustment mechanism and a pressing force adjustment mechanism; the parallel four-bar mechanism is arranged at the front end of the rack, the double-disc furrow opener, the pressing adjustment mechanism and the pressing force sensing mechanism are sequentially arranged horizontally at the lower end of the rack, the seed box is arranged at the upper end of the rack, the seed dispenser is arranged below the seed box, and the motor drives the seed dispenser; the pressing adjustment mechanism comprises a pressing wheel, a pressing support, a pendulum, a micro force sensor and a suction cup electromagnet, the pressing support is hinged to the rack, the pressing wheel is symmetrically arranged on the two sides of the pressing support, a shaft sleeve is arranged at one end of the pressing support, the first end of the pendulum is arranged on the shaft sleeve, the suction cup electromagnets are arranged at the two ends of the shaft sleeve, the second end of the pendulum is arranged on the body of the pressing support, and the micro force sensors are symmetrically arranged at the two sides of the second end of the pendulum.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery, specifically relating to a sowing and pressing misalignment correction device and a sowing unit. Background Technology

[0002] In agricultural sowing operations, compaction is typically performed after furrow sowing to maintain a certain degree of compaction in the seedbed. This facilitates water absorption by the seeds and provides a favorable soil environment for subsequent seed growth. During compaction, the pressure must be neither too high nor too low. Excessive pressure leads to high soil density, hindering seed germination and emergence; insufficient pressure results in loose, low-density soil, causing water loss and negatively impacting seed growth. Therefore, precise compaction is crucial for achieving good seed-soil contact and ensuring crop growth. No-till farmland, due to its long-term lack of soil movement, suffers from high soil hardness and uneven surfaces. This results in larger clods of soil generated during no-till sowing, making it difficult to intelligently adjust the compaction pressure according to the actual soil conditions, leading to poor compaction results. Furthermore, the complex operating environment of no-till farmland means that if the compaction device is hinged to the frame and shifts during operation, it cannot be precisely compacted, thus affecting the quality of the operation. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problem that the compaction device is prone to deviation during operation and cannot adjust the compaction pressure according to the soil environment. To achieve the above objective, this invention provides a sowing and compaction misalignment correction device, including: a frame, a parallel four-bar linkage, a seed box, a seed metering device, a double-disc furrow opener, a motor, a control unit, a compaction adjustment mechanism, and a compaction pressure adjustment mechanism.

[0004] The front end of the frame is provided with a parallel four-bar linkage mechanism. The lower end of the frame is provided with a double-disc furrow opener, a pressing adjustment mechanism and a pressing pressure sensing mechanism in sequence. The upper end of the frame is provided with a seed box. The seed metering device is provided below the seed box. The motor drives the seed metering device.

[0005] The pressing adjustment structure includes a pressing wheel, a pressing bracket, a pendulum, a miniature force sensor, and a suction cup electromagnet. The pressing bracket is hinged to the frame. The pressing wheel is symmetrically arranged on both sides of the pressing bracket. A bushing is provided at one end of the pressing bracket. The pendulum is connected to a pendulum bracket. The pendulum bracket is located in the middle of the bushing. Suction cup electromagnets are provided at both ends of the bushing. Miniature force sensors are symmetrically arranged on both sides of the pendulum.

[0006] The pressure adjustment mechanism includes an adjustment handle, a support frame, an auxiliary pressure wheel, a tension spring, and a lead screw motor. The adjustment handle is connected to the frame and fixed to the support frame. The auxiliary pressure wheel is located in the middle of the support frame. The lead screw motor is mounted on the pressure support, and the lead screw of the lead screw motor cooperates with the adjustment nut. One end of the tension spring is fixed to the adjustment nut, and the other end of the tension spring is connected to the frame.

[0007] Furthermore, the pressing wheel is tilted towards the center line of the pressing adjustment mechanism.

[0008] Furthermore, the pressing support is hinged to the frame.

[0009] Furthermore, the miniature force sensor is fixedly connected to the pressing bracket via a mounting frame.

[0010] Furthermore, the suction cup electromagnet is disposed on the disk, and the disk is disposed at both ends of the bushing.

[0011] Furthermore, two suction cup electromagnets are symmetrically arranged along the circumference of the disk.

[0012] Furthermore, the distance between the disk and the frame is variable.

[0013] Furthermore, the tension spring is connected to the frame via a hook.

[0014] Furthermore, the pendulum is made of magnetic material.

[0015] The present invention also provides a seeding unit, which includes any of the seeding and pressing misalignment correction devices described above.

[0016] The advantages of this invention are: it monitors whether the compaction direction is consistent with the furrow opener through a pendulum and sensing device; when the direction deviates, it corrects the deviation through an electromagnetic device, ensuring that the sowing direction does not deviate and resulting in a high sowing success rate. The compaction pressure is monitored by a tension / compression sensor, and the compaction pressure is adjusted by a lead screw motor driving a spring. The structure is simple, easy to install, and suitable for agricultural production. Attached Figure Description

[0017] Figure 1 A structural diagram of a specific embodiment of the present invention.

[0018] Figure 2 A structural diagram of a pressure regulating mechanism according to a specific embodiment of the present invention.

[0019] Figure 3 A cross-sectional view of a specific embodiment of the press wheel of the present invention.

[0020] Figure 4A structural diagram of a pressure regulating sensing device according to a specific embodiment of the present invention.

[0021] Figure 5 A schematic diagram of a bushing structure according to a specific embodiment of the present invention.

[0022] Figure 6 A schematic diagram of a bushing and sleeve structure according to a specific embodiment of the present invention.

[0023] Figure 7 A schematic diagram of a pendulum structure according to a specific embodiment of the present invention.

[0024] In the picture:

[0025] 1. Double-disc furrow opener 2. Parallel four-bar linkage contouring mechanism 3. Seed box 4. Seed metering device

[0026] 5. Frame 6. Pressing adjustment mechanism 7. Pressing pressure adjustment sensing mechanism 8. Motor

[0027] 9. Control Unit

[0028] 601. Pressing wheel; 602. Pendulum; 603. Miniature force sensor

[0029] 604. Fixing bracket; 605. Pressing bracket; 606. Self-locking nut; 607. Bolt.

[0030] 608. Disc; 609. Suction Cup Electromagnet; 6091-6094. Suction Cup Electromagnet

[0031] 610. Bushing; 611. Pendulum support; 612. Sleeve

[0032] 613. Tension spring 614. Adjusting nut 615. Lead screw motor

[0033] 701. Adjusting handle; 702. S-shaped tension / compression sensor; 703. Support frame.

[0034] 704. Secondary ballast wheel Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] like Figures 1-4As shown, in a specific embodiment of the sowing and compaction misalignment correction device of the present invention, the frame 5 is configured as an "L" shape, and a parallel four-bar linkage contouring mechanism 2 is fixed at the front end of the frame 5. A double-disc furrow opener 1 is set below the frame 5. The double-disc furrow opener 1 furrows the soil. The motor 8 drives the seed metering device 4 to rotate, and the crop seeds in the seed box 3 are sown into the soil along with the rotation of the seed metering device 4. The compaction wheel 601 and the auxiliary compaction wheel 704 compact the soil after sowing.

[0038] The pressing adjustment mechanism 6 includes a pressing support 605, with pressing wheels 601 symmetrically arranged on both sides of the pressing support 605, and the two pressing wheels are inclined toward the center line of the pressing adjustment mechanism 6.

[0039] A bushing 610 is provided at the front end of the pressurization bracket 605, and a sleeve 612 is fitted on the bushing 610, restricting the movement of the sleeve 612 on the bolt 607. The sleeve 612 is fixedly connected to the pendulum bracket 611, which connects to the pendulum 602. The pendulum 602 is suspended on the pressurization bracket 605. A miniature force sensor 603 is fixedly connected to the pressurization bracket 605 via a fixing bracket 604. The miniature force sensor 603 is located on both sides of the pendulum 602 and is aligned with the pendulum 602. The miniature force sensor 603 transmits signals to the control unit 9. The pendulum 602 is made of magnetic material, and the pendulum 602 and the miniature force sensors 603 on both sides are magnetically attracted to each other. A disc 608 is provided at both ends of the bushing 610. Two suction cup electromagnets 609 are symmetrically arranged along the circumference of each disc 608. The disc 608 is sleeved on the bolt 607, and the self-locking nut 606 fixes the disc 608 to the bolt 607. During the sowing process, when the terrain changes, the position of the pressing support 605 shifts to the left or right. The miniature force sensors 603 on both sides of the pendulum 602 shift with the pressing support 605. When one of the miniature force sensors 603 contacts the pendulum 602, the miniature force sensor 603 in contact with the pendulum 602 senses the change in force and sends a signal to the control unit 9. After receiving the signal, the control unit 9 activates the suction cup electromagnet set on one side of the bushing 610 according to the direction of the shift. The suction cup electromagnet generates magnetism and attracts the pressing support 605 in the opposite direction until the pendulum 602 returns to the center position, thereby ensuring that the pressing support 605 and the pressing wheel 601 are on the same straight line as the double disc furrow opener 1 during the sowing process.

[0040] The following is combined Figures 5-7The working process of the compaction adjustment mechanism 6 is further explained. Taking the leftward offset of the compaction wheel as an example, in the initial state, the compaction adjustment mechanism 6 and the double-disc furrow opener 1 are positioned on the same straight line. When the sowing operation begins, the compaction wheel 601 rotates, the bushing 610 passes through the bolt 607, and the suction cup electromagnets are symmetrically arranged along the circumference of the disc 608, namely the suction cup electromagnets 6091 and 6092 on the left disc and the suction cup electromagnets 6093 and 6094 on the right disc. When the pressure roller 601 shifts to the left, the distance between the suction cup electromagnets 6091 and 6094 and the frame increases. The miniature force sensor 603, located on the left side of the pendulum 602, comes into contact with the pendulum 602. The miniature force sensor 603 sends a signal to the control unit 9. Based on the sensing information, the control unit 9 issues a command to control the suction cup electromagnets 6091 and 6094 to generate a strong electromagnetic force, which attracts the pressure support 605, causing the pressure support 605 to return to the preset position.

[0041] When the pressure wheel shifts to the right, the adjustment process is the same as the principle of shifting to the left, but the direction of action is opposite.

[0042] The compaction pressure adjustment sensing mechanism 7 includes an adjustment handle 701, a support frame 703 at the lower end of the adjustment handle 701, an S-type tension / compression sensor 702 mounted on the support frame 703, and a secondary compaction wheel 704 mounted on the support frame 703. The S-type tension / compression sensor 702 detects the compacted soil and sends the detection value to the control unit 9. The control unit 9 sends a command to the lead screw motor 615 located inside the compaction wheel 601 based on the detection value. The adjustment nut 614 fixed on the lead screw of the lead screw motor 615 drives the tension spring 613 to adjust the compaction pressure.

[0043] In some embodiments of the present invention, the control unit may be a PLC AMX-224. In other embodiments of the present invention, the control unit may also be other chips or microcontrollers capable of performing control functions.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sowing and pressing misalignment correction device, characterized in that, include: Frame, parallel four-bar linkage, seed box, seed metering device, double disc furrow opener, motor, control unit, press adjustment mechanism, press pressure adjustment mechanism; The front end of the frame is provided with a parallel four-bar linkage mechanism. The lower end of the frame is provided with a double-disc furrow opener, a pressing adjustment mechanism and a pressing pressure sensing mechanism in sequence. The upper end of the frame is provided with a seed box. The seed metering device is provided below the seed box. The motor drives the seed metering device. The pressing adjustment structure includes a pressing wheel, a pressing bracket, a pendulum, a miniature force sensor, and a suction cup electromagnet. The pressing bracket is hinged to the frame. The pressing wheel is symmetrically arranged on both sides of the pressing bracket. A bushing is provided at one end of the pressing bracket. The pendulum is connected to a pendulum bracket. The pendulum bracket is located in the middle of the bushing. Suction cup electromagnets are provided at both ends of the bushing. Miniature force sensors are symmetrically arranged on both sides of the pendulum. The pressure adjustment mechanism includes an adjustment handle, a support frame, an auxiliary pressure wheel, a tension spring, and a lead screw motor. The adjustment handle is connected to the frame and fixed to the support frame. The auxiliary pressure wheel is located in the middle of the support frame. The lead screw motor is mounted on the pressure support, and the lead screw of the lead screw motor cooperates with the adjustment nut. One end of the tension spring is fixed to the adjustment nut, and the other end of the tension spring is connected to the frame.

2. The sowing and pressing misalignment correction device according to claim 1, characterized in that, The press wheel is tilted toward the center line of the press adjustment mechanism.

3. The sowing and pressing misalignment correction device according to claim 1, characterized in that, The pressing support is hinged to the frame.

4. The sowing and pressing misalignment correction device according to claim 1, characterized in that, The miniature force sensor is fixedly connected to the pressing support via a mounting bracket.

5. The sowing and pressing misalignment correction device according to claim 1, characterized in that, The suction cup electromagnet is mounted on the disc, and the disc is mounted at both ends of the bushing.

6. The sowing and pressing misalignment correction device according to claim 5, characterized in that, Two suction cup electromagnets are symmetrically arranged along the circumference of the disk.

7. The sowing and pressing misalignment correction device according to claim 1, characterized in that, The distance between the disk and the frame is variable.

8. The sowing and pressing misalignment correction device according to claim 1, characterized in that, The tension spring is connected to the frame via a hook.

9. The sowing and pressing misalignment correction device according to claim 1, characterized in that, The pendulum is made of magnetic material.

10. A seeding monomer, characterized in that, The sowing and pressing misalignment correction device includes any one of claims 1-9 above.

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