Dual-mode lifting control mechanism and dual-mode lifting control method for rice transplanter

Abstract

The invention discloses a rice transplanter dual-mode lifting control mechanism and a dual-mode lifting control method. A flange bracket is mounted and is used for being detachably connected with a rice transplanter box body; the driving device is fixed on the mounting flange bracket; the transmission assembly comprises a transmission gear meshed with the output end of the driving device, an axial limiting component and a rotating shaft; the rotating execution assembly is composed of a rotating shaft and a limiting flange arranged on the rotating shaft in a sleeving mode, one end of the rotating shaft is rigidly connected with the transmission gear, and the other end of the rotating shaft is in torque transmission connection with the vehicle body connecting component through the limiting flange; the angle detection assembly comprises a sensor connecting piece synchronously rotating with the rotating shaft and a rotating angle sensor fixed on the sensor connecting piece; the limiting flange is provided with an idle stroke structure so as to achieve manual / electric dual-mode switching. Through cooperative work of all the components, accurate automatic control in an electric mode can be achieved, the rice transplanter can be rapidly switched to a manual mode by means of an idle stroke structure, and the operation flexibility and adaptability of the rice transplanter are greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rice transplanter, and particularly relates to a double-mode lifting control mechanism and double-mode lifting control method of a rice transplanter. BACKGROUND

[0002] With the rapid development of agricultural mechanization and intelligent technology, as a key equipment for rice planting, the operation efficiency and operation convenience of the rice transplanter directly affect the agricultural production benefit. In the process of electrical control upgrading of the rice transplanter, the intelligent transformation of the lifting control system of the transplanting part is one of the core technical directions. In the prior art, the rice transplanter generally adopts an electrical control scheme with a push rod motor as the core, and the lifting adjustment of the transplanting part and the separation / combination control of the clutch are realized through the key of an electrical control handle. Compared with the traditional pure mechanical control mode, the scheme significantly simplifies the operation process, reduces the labor intensity of the operator, and improves the operation automation level.

[0003] However, the existing electrical control scheme still has the following technical defects in actual application:

[0004] Structural and performance limitations: the push rod motor scheme needs to be equipped with a complex transmission mechanism and a large-capacity power module, resulting in a large overall installation size, which is difficult to adapt to the compact structure of the rice transplanter; at the same time, the motor drive response has hysteresis, and the action execution speed is slow, which easily affects the transplanting efficiency, especially in the frequent lifting operation scene; in addition, the push rod motor has insufficient pushing force at the rising gear, which is difficult to meet the high-load operation demand.

[0005] Reliability risk: the electrical control system is highly dependent on electronic components and software programs. Once a fault occurs (such as sensor failure, circuit short circuit or program anomaly), the electrical control handle will completely lose its function, causing the mechanical handle linkage mechanism to be locked, the transplanting part cannot be restored to operation through the manual mode, and the field operation is interrupted; troubleshooting and maintenance require the intervention of professional technicians, the maintenance period is long and the cost is high, which directly affects the progress of agricultural production.

[0006] To solve the above problems, the industry urgently needs a rice transplanter lifting control mechanism that has the convenience of electric control and the reliability of mechanical operation to break through the limitations of the existing technology and meet the efficient and stable operation demand under complex working conditions. SUMMARY

[0007] In view of the problems existing in the prior art, the application provides a double-mode lifting control mechanism and double-mode lifting control method of a rice transplanter,

[0008] The application is achieved by a double-mode lifting control mechanism of a rice transplanter, characterized in that the mechanism comprises: a mounting flange support configured to be detachably connected to a box body of the rice transplanter; a driving device fixed to the mounting flange support; a transmission assembly comprising a transmission gear meshing with an output end of the driving device, an axial limiting component, and a rotating shaft; a rotating execution assembly comprising the rotating shaft and a limiting flange sleeved on the rotating shaft, one end of the rotating shaft being rigidly connected to the transmission gear, and the other end being connected to a vehicle body connecting component through the limiting flange to form a torque transmission connection; and an angle detection assembly comprising a sensor connecting piece rotating synchronously with the rotating shaft and a rotation angle sensor fixed to the sensor connecting piece; wherein the limiting flange is provided with an idle stroke structure to realize manual / electric double-mode switching.

[0009] Further preferably, the axial limiting component is a shaft sleeve component comprising: an axial positioning sleeve fixed to the mounting flange support; and a limiting baffle ring arranged at an end of the axial positioning sleeve; and the transmission gear is fixed in a circumferential direction to the rotating shaft through a fastening bolt.

[0010] Further preferably, the vehicle body connecting component comprises: a flange connecting disc rigidly connected to the limiting flange; and a connecting shaft sleeve arranged at an end surface of the flange connecting disc, the connecting shaft sleeve being detachably connected to a lifting handle shaft of the rice transplanter in a torque transmission mode.

[0011] Further preferably, the rotation angle sensor is configured to detect a rotation angle of the rotating shaft and output an electric signal.

[0012] Further preferably, the rotation angle sensor is a non-contact rotary encoder of a novotechnik type RFC-4853-605-111-2022.

[0013] The application further discloses a double-mode lifting control method based on the double-mode lifting control mechanism of the rice transplanter, characterized in that the method comprises: an idle stroke function configuration: the idle stroke of the limiting flange covers four gears of lifting up, fixing, lowering, and transplanting; an electric mode step: S1. The driving device drives the rotating shaft to rotate, first passes through the idle stroke, and then performs an additional stroke to drive gear shifting; S2. The rotation angle sensor detects the rotation angle of the rotating shaft in real time; and S3. When the height of the seedling table reaches a set value, the driving device is controlled to return to a mechanical neutral position, so that the idle stroke is symmetrically distributed on both sides of the zero position. Further preferably, the mechanical neutral position satisfies that the up / down gear shifting has an effective idle stroke when manually operated.

[0014] Further preferably, the method further comprises a fault handling step: when the driving device fails, the vehicle body connecting component is manually driven by the lifting handle shaft of the rice transplanter to directly control the lifting of the seedling table within the idle stroke range.

[0015] Further preferably, the angle of the additional stroke in step S1 is equal to the minimum working angle required for gear shifting.

[0016] Further preferably, the output electrical signal of the corner sensor in step S2 is used to close-loop control the stroke end position of the driving device.

[0017] The present application has the advantages and technical effects:

[0018] The double-mode lifting control mechanism of the rice transplanter has the following remarkable technical effects through the innovative structural design:

[0019] Double-mode redundant control technology: creatively fuses the electric control driving and the mechanical transmission system, builds an independent mechanical operation channel through the torque transmission design of the connecting shaft sleeve and the lifting handle shaft, and realizes seamless switching when the control system fails due to power failure, motor failure or sensor abnormality, effectively avoids the interruption of field operation, and significantly improves the environmental adaptability and operation continuity of the equipment.

[0020] High-precision closed-loop control system: uses a non-contact corner sensor based on the Hall effect principle to replace the traditional potentiometer, realizes real-time accurate collection of the rotary displacement through the rigid synchronous design of the sensor connecting piece and the rotating shaft, and has excellent linearity and temperature stability, which can completely eliminate the mid-point drift phenomenon caused by the wear of the potentiometer type sensor, and build a high-precision closed-loop control loop with the control system, so that the control precision of the lifting position of the planting part is improved by more than 15%, and the consistency of the planting depth is significantly improved.

[0021] Structural optimization and reliability improvement: the shaft sleeve assembly composed of the axial positioning sleeve and the limiting ring effectively prolongs the service life of the mechanism while realizing the axial limiting of the rotating shaft; the shaft stop ring of the transmission gear and the rotating shaft is connected through a fastening screw, which improves the assembly process under the premise of efficient torque transmission, and the replacement of the core components can be completed by only disassembling a single fastening bolt in the later maintenance.

[0022] Modular compatible design: the installation flange bracket adopts a standard interface design, which can be adapted to more than 90% of mainstream rice transplanter models, and the combination structure of the flange connecting disc and the connecting shaft sleeve realizes the quick plug-in connection with the original machine lifting handle shaft, which greatly reduces the intelligent upgrading cost.

[0023] The present application provides a reliable technical solution for the intelligent upgrading of agricultural equipment by integrating mechanical and electrical systems. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a front view schematic diagram of the present application.

[0025] Figure 2 is a schematic view of the left view of the present application;

[0026] Figure 3 is a schematic view of the front view of the present application installed in the rice transplanter box body;

[0027] Figure 4 is a schematic view of the top view of the present application installed in the rice transplanter box body;

[0028] Figure 5 is Figure 4 is the A-A sectional view.

[0029] 1-flange support; 2-executing motor; 3-shaft sleeve; 31, axial positioning sleeve; 32, limit stop ring; 4-toothed disc; 5-rotating shaft; 6-limit flange; 7-vehicle body connecting flange; 71, flange connecting disc; 72, connecting shaft sleeve; 73, shaft pin; 8-sensor connecting piece; 9-front wheel rotation angle sensor main body; 10-rice transplanter box body; 11-rice transplanter lifting handle shaft. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] Please refer to Figures 1 to 5The utility model provides a rice transplanter double mode lifting control mechanism, characterized by comprising: mounting flange support 1 is used for being detachably connected with the rice transplanter box body 10, and the detachable connection mode makes the mounting flange support convenient to install and detach, facilitates equipment maintenance and upgrade, drive device is stably fixed on the mounting support, guarantees its stability in the working process, provides stable power output for subsequent transmission assembly, ensures that the whole lifting control mechanism reliably operates, drive device 2 is fixed on the mounting flange support 1, transmission assembly includes transmission gear 4 that is engaged with the output end of drive device 2, axial limiting part 3 and rotating shaft 5, transmission gear is engaged with the output end of drive device, realizes the efficient transmission of power, axial limiting part effectively limits the axial displacement of rotating shaft, prevents it from appearing in the working process and guarantees transmission accuracy and stability, transmission gear and rotating shaft are circumferentially fixed, ensure that torque transmission is reliable, reduce energy loss and improve transmission efficiency, rotating execution assembly is formed by rotating shaft 5 and the limiting flange 6 that is sleeved on it, one end of rotating shaft 5 is rigidly connected with transmission gear 4, and the other end is connected with the vehicle body connecting part 7 through limiting flange 6 and forms torque transmission connection, rotating shaft is as the core transmission part, and the power of transmission assembly is transmitted to rotating execution assembly, the limiting flange is not only realized torque transmission, but also realizes manual / electric double mode switching through the idle stroke structure, so that operating personnel can flexibly select the operation mode according to the actual situation, and the normal operation of equipment under different working conditions is guaranteed, angle detection assembly includes sensor connecting piece 8 that is rotated with rotating shaft 5 and the rotation angle sensor 9 that is fixed on it, wherein, the limiting flange 6 is provided with idle stroke structure to realize manual / electric double mode switching.

[0032] The above-mentioned rice transplanter double mode lifting control mechanism has comprehensive and ingenious structure design, provides stable and reliable lifting control basis for the rice transplanter, through the cooperative work of each component, can realize accurate automatic control in the electric mode, and can be quickly switched to the manual mode with the aid of the idle stroke structure, meets the needs of different operation scenes, and greatly improves the operation flexibility and adaptability of the rice transplanter.

[0033] Further preferably, the axial limiting part 3 is a shaft sleeve part, comprising: an axial positioning sleeve 31 fixed to the mounting flange support 1, a limiting baffle ring 32 arranged at the end of the axial positioning sleeve, and the transmission gear 4 is circumferentially fixed with the rotating shaft 5 through a fastening bolt.

[0034] Further preferably, the vehicle body connecting part 7 comprises: a flange connecting disc 71 rigidly connected with the limiting flange 6; a connecting shaft sleeve 72 arranged on the end face of the flange connecting disc, and the connecting shaft sleeve 72 is detachably connected with the rice transplanter lifting handle shaft 11 through a shaft pin 73 for torque transmission. The flange connecting disc is rigidly connected with the limiting flange to ensure the stability of torque transmission. The connecting shaft sleeve is detachably connected with the rice transplanter lifting handle shaft, which facilitates the installation and disassembly of the equipment, and at the same time realizes reliable torque transmission, so that the rice seedling table can be accurately controlled when manually operated, thereby enhancing the practicability and maintainability of the equipment.

[0035] Further preferably, the rotation angle sensor 9 is configured to detect the rotation angle of the rotating shaft 5 and output an electrical signal. Further preferably, the rotation angle sensor 9 adopts a non-contact rotary encoder of novotechnik model RFC-4853-605-111-2022 which is purchased on the market. The non-contact rotary encoder has the advantages of high precision, high reliability and long service life, and can accurately detect the rotation angle of the rotating shaft in real time and output an electrical signal to the vehicle controller. These electrical signals are used to close-loop control the stroke end position of the driving device, realize accurate control of the lifting position of the rice seedling table, effectively improve the consistency of the transplanting depth, and improve the quality of the transplanting.

[0036] The present application also relates to a double-mode lifting control method of a double-mode lifting control mechanism of a rice transplanter, comprising: an idle stroke function configuration: the idle stroke of the limiting flange 6 covers four gears of upward, fixed, downward and transplanting; the idle stroke covering four gears provides a buffer and operation space for manual and electric mode switching. In manual operation, the operator can clearly feel the gear change to avoid misoperation; in electric mode, the idle stroke can prevent the equipment from generating impact when starting and stopping, protect the equipment parts and prolong the service life.

[0037] The electric mode step: S1. The driving device 2 drives the rotating shaft 5 to rotate, first over the idle stroke and then perform additional stroke to drive gear shifting; S2. The rotation angle sensor 9 detects the rotation angle of the rotating shaft 5 in real time; S3. When the height of the rice seedling table reaches the set value, the control driving device 2 returns to the mechanical neutral position, so that the idle stroke is symmetrically distributed on both sides of the zero position. Further preferably, the mechanical neutral position satisfies: the upward / downward gear shifting has an effective idle stroke when manually operated. The design of first over the idle stroke and then perform additional stroke in the above control method ensures accurate and reliable gear shifting and avoids inaccurate gear switching due to the influence of the idle stroke. The rotation angle sensor detects the rotation angle in real time to realize accurate control of the height of the rice seedling table. The control driving device returns to the mechanical neutral position and makes the idle stroke symmetrically distributed, which ensures that the equipment is in a stable state when starting next time, improves the stability and reliability of the equipment operation. The additional stroke angle is equal to the minimum working angle required for gear shifting, which improves the energy utilization efficiency and reduces unnecessary energy consumption.

[0038] A further preferred embodiment includes a fault handling step: when the drive unit 2 fails, the vehicle body connecting component 7 is manually driven via the lifting handle shaft 11 of the rice transplanter to directly control the raising and lowering of the seedling platform within its idle travel range. In emergency situations where the drive unit fails, this fault handling step provides operators with a way to manually control the raising and lowering of the seedling platform, ensuring that field operations can continue, avoiding work interruptions due to equipment failure, greatly improving the equipment's fault tolerance and operational continuity, and reducing losses caused by equipment failure.

[0039] More preferably, the angle of the additional stroke in step S1 is equal to the minimum working angle required for gear shifting.

[0040] More preferably, the output electrical signal of the angle sensor 9 in step S2 is used to control the end position of the travel of the drive device 2 in a closed loop.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-mode lifting control mechanism for a rice transplanter, characterized in that, include: Install flange bracket (1) for detachable connection with rice transplanter housing (10); The drive unit (2) is fixed to the mounting flange bracket (1); the transmission assembly includes a transmission gear (4) meshing with the output end of the drive unit (2), an axial limiting component (3), and a rotating shaft (5); the rotary actuation assembly consists of a rotating shaft (5) and a limiting flange (6) fitted thereon, one end of the rotating shaft (5) is rigidly connected to the transmission gear (4), and the other end is connected to the vehicle body connecting component (7) through the limiting flange (6) to form a torque transmission connection; the angle detection assembly includes a sensor connector (8) that rotates synchronously with the rotating shaft (5) and an angle sensor (9) fixed thereon; wherein the limiting flange (6) is provided with a free stroke structure to realize manual / electric dual mode switching.

2. The dual-mode lifting control mechanism for rice transplanters according to claim 1, characterized in that, The axial limiting component (3) is a bushing component, comprising: an axial positioning sleeve (31) fixed to the mounting flange bracket (1); a limiting retaining ring (32) disposed at the end of the axial positioning sleeve; and the transmission gear (4) being circumferentially fixed to the rotating shaft (5) by fastening bolts.

3. The dual-mode lifting control mechanism for rice transplanters according to claim 1, characterized in that, The vehicle body connecting component (7) includes: a flange connecting plate (71) rigidly connected to the limiting flange (6); and a connecting bushing (72) disposed on the end face of the flange connecting plate, wherein the connecting bushing (72) is detachably torque-transmittingly connected to the lifting handle shaft (11) of the rice transplanter.

4. The dual-mode lifting control mechanism for rice transplanters according to claim 1, characterized in that, The rotation angle sensor (9) is configured to detect the rotation angle of the rotating shaft (5) and output an electrical signal.

5. The dual-mode lifting control mechanism for rice transplanters according to claim 4, characterized in that, The angle sensor (9) is a non-contact rotary encoder with model number RFC-4853-605-111-2022 from Novotechnik.

6. A dual-mode lifting control method based on the dual-mode lifting control mechanism of a rice transplanter according to any one of claims 1-5, characterized in that, include: No-travel function configuration: enables the no-travel of the limit flange (6) to cover four positions: rising, fixed, falling, and insertion; Electric mode steps: S1. The drive device (2) drives the rotating shaft (5) to rotate, first passing the empty stroke and then performing the additional stroke to drive gear shifting; S2. The angle sensor (9) detects the rotation angle of the rotating shaft (5) in real time; S3. When the height of the seedling platform reaches the set value, the control drive device (2) returns to the mechanical center position, so that the idle stroke is symmetrically distributed on both sides of the zero position.

7. The dual-mode lifting control method according to claim 6, characterized in that, The mechanical center position satisfies the following: when manually operating, there is an effective free travel when shifting up or down gears.

8. The dual-mode lifting control method according to claim 6, characterized in that, It also includes troubleshooting steps: when the drive unit (2) fails, the vehicle body connecting component (7) is manually driven by the lifting handle shaft (11) of the rice transplanter, and the lifting of the seedling platform is directly controlled within the empty stroke range.

9. The dual-mode lifting control method according to claim 6, characterized in that, The angle of the additional stroke mentioned in step S1 is equal to the minimum working angle required for gear shifting.

10. The dual-mode lifting control method according to claim 6, characterized in that, The output electrical signal of the angle sensor (9) in step S2 is used to control the end position of the travel of the drive device (2) in a closed loop.

Images