Self-propelled field modular work machine

Abstract

A self-propelled field modular operation machine comprises left and right symmetrical left and right power modules, a telescopic central transmission main beam connecting the left and right power modules, a modular farm tool mounting interface arranged on the central transmission main beam, a hydraulic power output system, and a four-wheel walking system driven by the left and right power modules; the self-propelled field modular operation machine effectively solves the problems of insufficient horsepower and limited mounting capacity of existing tractors and farm tools, meets the high-standard and large-plain farmland cultivation requirements, especially the operation requirements of super-large horsepower and super-wide body farm tools, solves the problems of low operation efficiency of traditional tractors and the inability to adapt to the modular mounting requirements of various farm tools, and leads to low farmland operation efficiency and high energy consumption.

Description

Technical Field

[0001] This utility model relates to an agricultural machinery and equipment, and in particular to a large-scale self-propelled modular agricultural operation machine suitable for farming in plains. Background Technology

[0002] In traditional agricultural mechanization, the operation mode of tractors combined with various agricultural implements has significant limitations. According to patent CN104191966B (Wang Bo, published in 2016), micro tractors using 6-7kW diesel engines have insufficient power and cannot drive rotary tillage equipment with a tillage width of 900-1200mm. Furthermore, the design of integrating the hydraulic system into the gearbox increases manufacturing costs by 25%, and the bottom-mounted structure of the hydraulic cylinder is easily damaged by dust during rotary tillage. With the development of agricultural mechanization, traditional tractors have reached the upper limit of 400 horsepower (CN104191966B, Chinese invention patent, authorized announcement date March 15, 2017), which is insufficient to meet the needs of ultra-large-scale farmland for higher power and wider operating width. Their traction capacity cannot match the needs of ultra-wide-body agricultural implements, resulting in limited efficiency in high-standard large plain farmland operations. In the existing technology, the fixed cultivation mode adopted by patent CN104956947B (Hu Jinyan, published in 2019) requires frequent manual intervention, while the tracked orchard machinery proposed by patent CN111066761A (Li Mingqi, published in 2020), although achieving modular design, still relies on manual operation of the pesticide spraying system. Both solutions have the problem of low operating efficiency. The former has a field operation efficiency of less than 50 mu / hour, and the latter's plant protection operation efficiency is limited to less than 200 mu / hour. More importantly, the traditional tractor adopts a single power output mode, which cannot simultaneously meet the constant torque required for rotary tillage and the variable speed requirements for sowing, resulting in an increase in energy consumption of about 30% (CN104191966B). The following challenges exist at the technical implementation level: 1) Traction of ultra-wide implements (working width of over 14 meters) requires breaking through the traditional tractor power axle design, and the existing transfer case structure cannot achieve independent speed adjustment of the left and right wheel sets; 2) Rapid switching of modular implements requires solving the problem of synchronous transmission of hydraulic / electric dual power, and the hydraulic interface standard of the existing patent CN111066761A is not compatible with the electric drive unit; 3) The contradiction between the anti-sinking device and the steering system, the traditional tracked design (CN104191966B) causes the turning radius to increase to over 8 meters when raised, which seriously affects the efficiency of field operations; In addition, the existing technology lacks an intelligent power distribution system and cannot automatically adjust the output ratio of the hybrid power system according to soil resistance, resulting in energy waste. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this utility model provides a self-propelled modular field operation machine. This self-propelled modular field operation machine effectively solves the problems of insufficient horsepower and limited load-bearing capacity of existing tractors and agricultural implements, and meets the needs of high-standard large plain farmland cultivation, especially the operation requirements of ultra-high horsepower and ultra-wide-body agricultural implements. It also solves the problems of low operating efficiency of traditional tractors and their inability to adapt to the modular load-bearing needs of various agricultural implements, resulting in low farmland operation efficiency and high energy consumption.

[0004] The technical solution adopted by this utility model to solve its technical problem is a self-propelled modular field operation machine, including a left power module and a right power module symmetrically arranged on the left and right sides, a telescopic central transmission main beam connecting the left power module and the right power module, a modular implement mounting interface set on the central transmission main beam, a hydraulic power output system, and a four-wheel walking system driven by the left and right power modules respectively. The feature is that the telescopic range of the central transmission main beam is from the traditional tractor mode to the 14-meter ultra-wide operation mode. The left power module includes an engine and a power axle that controls the two drive wheels respectively. The right power module includes a generator set and an electric motor. The generator of the right power module provides power to each electric motor through a power conversion system. The power conversion system includes a converter that converts the generator output into DC power, a battery pack, and a multi-channel speed controller connected by a relay. Each speed controller controls the speed of the drive motor of different implements respectively. Furthermore, the four-wheel walking system includes four independently steerable drive wheels, anti-slip telescopic teeth located on the outer side of the wheels, and a lifting hydraulic walking track system installed between the wheels. The lifting hydraulic walking track system can be lowered to form an auxiliary walking mode during operation and raised entirely when turning. Furthermore, the self-propelled modular field operation machine also includes a liftable and rotatable cab, an AI digital control system, and a sensor system for automatically identifying the operation mode and automatically selecting the drive mode. The modular implement mounting interface can be adapted to a variety of implements, including rotary tillers, seeders, sprayers, and harvesters; among which the harvester has a foldable header and a laterally arranged thresher. Furthermore, the central drive main beam can be folded in the forward direction during road transport and unfolded laterally during field operations; Furthermore, this self-propelled modular field work machine features a hybrid electric-hydraulic drive system, allowing users to select between engine-driven, electric motor-driven, or hydraulic motor-driven modes depending on different operational needs. Furthermore, the control system of this self-propelled modular field operation machine can realize both manned driving and unmanned autonomous operation modes.

[0005] The beneficial effects of adopting this technical solution include: 1) Significantly improved operating efficiency, with a sowing speed of 260-300 mu per hour and a spraying or fertilizing speed of 2000-2500 mu per hour, approximately 20 times faster than traditional tractors; 2) Modular design supports rapid switching between various implements, adapting to the needs of complex farmland operations; 3) Hybrid power system reduces energy consumption, and integrated hydraulic-electric design reduces mechanical failure rate; 4) Intelligent control system automatically adjusts operating parameters through sensors and speed controllers, reducing driver workload; 5) Foldable body design balances road safety with field operation efficiency; 6) Tracked tracks and anti-slip tooth structure enhance adaptability to complex terrain while reducing soil compaction. Furthermore, the machine supports AI digital technology, enabling automatic recognition and mode selection during operation, further improving operational accuracy and efficiency. Attached Figure Description

[0006] Figure 1 This is a front view of the structure of this utility model; Figure 2 This utility model Figure 1 The left view; Figure 3 This utility model Figure 1 Right view The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0007] The specific implementation methods of this utility model are as follows: Example 1, Refer to Figure 1 , Figure 2 , Figure 3 The self-propelled modular field operation machine includes a left power module 1, a right power module 4, a hydraulic power output system 19, and a central transmission main beam 3. The central transmission main beam 3 adopts a telescopic design, which can be retracted to the length of a traditional tractor and extended to a maximum of 14 meters. The central transmission main beam 3 is equipped with a transmission output shaft inside, which is used to connect the power transmission systems of the left and right power modules. Reference Figure 1 , Figure 2 The left power module 1 and the right power module 4 are each equipped with an independent power transmission system. The left power module uses a diesel engine 11 as the main power source and transmits power to two drive axles through a gearbox. Each drive axle is connected to two drive shafts 9 at the end, which drive four walking wheels 10 respectively. The outer side of the walking wheels 10 is equipped with retractable anti-slip teeth 8. A lifting hydraulic walking track system 13 is provided between the two wheels. When working, the track 13 is lowered to provide auxiliary support and can be raised when turning. Reference Figure 1 , Figure 3The right-side power module is equipped with a diesel generator set 5. The generated electricity is converted into DC power by the converter 16 and stored in the battery 6. The battery 6 supplies power to the motor through the relay 15 and the speed controller 14. The motor drives the agricultural implement working mechanism to operate and at the same time provides power to the hydraulic power output system 17. Reference Figure 1 The cab 2 features a height-adjustable and rotatable design. The height can be adjusted via hydraulic cylinders, and the rotatable mechanism allows the cab to rotate 360°. The control system includes a mechanical control system and an electronic control system, enabling manned or unmanned operation modes. Reference Figure 1 , Figure 2 , Figure 3 During operation, the appropriate implement module is selected according to the agronomic requirements. Taking rotary tillage as an example, the rotary tiller is installed on the central transmission main beam 3 through the standard interface 7. The diesel engine 12 provides the walking power, the generator set 5 supplies power to the drive motor of the rotary tiller shaft, and the motor speed is adjusted by the speed regulator 14 according to the operation requirements. The sensor monitors the shaft speed in real time. When moving along the road, the central drive beam is retracted by the hydraulic system, and the implement module can be folded along the direction of travel; when working in the field, the main beam is extended to its maximum width, the implement module is unfolded laterally, and the control system can realize one-button implementation and retraction of implements. For harvesting operations, the header of the special harvester module adopts an electric folding mechanism, the threshing device is arranged horizontally, each working part is driven by an electric motor, the speed is precisely adjusted by an electronic control system, the hydraulic cylinder controls the lifting and lowering of the header, and sensors monitor the working status of each part. The power distribution system of this self-propelled modular field machine adopts a hybrid electric-hydraulic drive scheme: the walking system is mainly mechanically driven, the working system is mainly electrically driven, and the auxiliary functions are hydraulically controlled; under different working modes, the control system automatically optimizes the power distribution scheme and realizes intelligent adjustment of working parameters through AI algorithms.

Claims

1. A self-propelled modular field operation machine, comprising a left-side power module and a right-side power module symmetrically arranged, a retractable central transmission main beam connecting the left-side power module and the right-side power module, a modular implement mounting interface disposed on the central transmission main beam, a hydraulic power output system, and a four-wheel walking system driven by the left and right power modules respectively, characterized in that: The telescopic range of the central drive beam is from the traditional tractor mode to an ultra-wide working mode of 14 meters. The left power module includes an engine and a power axle that controls the two drive wheels respectively. The right power module includes a generator set and an electric motor. The generator of the right power module provides power to each electric motor through a power conversion system. The power conversion system includes a converter that converts the generator output into DC power, a battery pack, and a multi-channel speed controller connected by relays. Each speed controller controls the speed of the drive motor of different agricultural implements.

2. The self-propelled modular field operation machine according to claim 1, characterized in that: The four-wheel walking system includes four independently steerable drive wheels, anti-slip telescopic teeth set on the outside of the wheels, and a lifting hydraulic walking track system installed between the two wheels. The lifting hydraulic walking track system can be lowered to form an auxiliary walking mode during operation and raised as a whole when turning.

3. The self-propelled modular field operation machine according to claim 1, characterized in that: The self-propelled modular field operation machine also includes a liftable and rotatable cab, an AI digital control system, and a sensor system for automatically identifying the operation mode and automatically selecting the drive mode. The modular implement mounting interface can be adapted to a variety of implements, including rotary tillers, seeders, sprayers, and harvesters. The harvester has a foldable header and a laterally arranged thresher.

4. A self-propelled modular field operation machine according to claim 1, characterized in that: The central drive beam can be folded in the forward direction during road transport and unfolded laterally during field operations.

5. A self-propelled modular field operation machine according to claim 1, characterized in that: This self-propelled modular field machine has a hybrid oil-electric-hydraulic drive system, which can select engine drive, electric motor drive or hydraulic motor drive mode according to different operation needs.

6. A self-propelled modular field operation machine according to claim 1, characterized in that: The control system of this self-propelled modular field machine can realize both manned driving and unmanned autonomous operation modes.

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