141 results about "Agricultural tractor" patented technology

An apparatus for operating a load-controlled hydraulic supply of an agricultural tractor includes a hydraulic pump which is adjustable with respect to the displacement volume for supplying pressurized hydraulic fluid, a proportional valve which is electrically actuatable, a primary hydraulic consumer to carry out a superordinate hydraulic function and to be directly connected to a conveying outlet of the hydraulic pump, a secondary hydraulic consumer to carry out a subordinate hydraulic function and to be connected to the conveying outlet of the hydraulic pump via the proportional valve, and a control unit configured to move the proportional valve into a closed valve position when the control unit recognizes that at least one of a required power of the primary and secondary hydraulic consumers exceeds the conveying capacity of the hydraulic pump and the subordinate hydraulic function of the secondary hydraulic consumer is inactive.

The present disclosure relates to an agricultural tractor. In an agricultural tractor according to the present disclosure, a first injection hole for injecting fuel is arranged on a first fender side, and a second injection hole for injecting cleaning fluid is arranged on a second fender side. According to the present disclosure, effects are achieved in that a design with the aesthetics of a symmetrical balance is enabled and the center of gravity can be stably maintained.

The invention discloses an agricultural tractor visual positioning method and system, and belongs to the technical field of agricultural tractor visual positioning, and the method comprises the steps: extracting the multi-scale features of a farmland scene image, and carrying out the feature fusion, and obtaining the multi-scale fusion features; performing adaptive weighting on the multi-scale fusion feature map to generate a final feature map so as to obtain a feature point probability heat map and a feature point descriptor; extracting coordinates and detection confidence of the feature points according to the feature point probability heat map; when the detection confidence of the candidate feature points meets a confidence threshold requirement, matching the descriptors of the candidate feature points with the descriptors of the feature points of the adjacent frames in space to obtain matching pairs; and calculating according to the coordinates of the candidate feature points in the matched pairs, the coordinates of the feature points of the adjacent frames and the internal reference of the image acquisition equipment, and outputting the real-time pose of the tractor. According to the method, the spatial distribution of the feature points can be optimized, so that the discrimination is stronger, and the robustness and the positioning precision of the feature points in a farmland environment are improved.

A load-controlled hydraulic supply for an attachment attached to an agricultural tractor includes a hydraulic high-pressure source providing a volume flow in a supply line, a return line leading to a hydraulic reservoir, and a load-indicating line connected to a device for pressure limiting. The volume flow is adjusted based on pressure feedback prevailing at the load-indicating line.

The invention belongs to the technical field of agricultural tractors, and particularly relates to an agricultural tractor intelligent fault diagnosis system and method based on the Internet of Things, and the system comprises a sensor assembly, a data collection module, a wireless transmission module, a cloud server, and a user terminal. The components are combined to form a component installation stage, a preliminary debugging stage and a comprehensive debugging stage, and system operation is carried out through the three stages. The sensor assembly comprises a vibration sensor, a temperature sensor and a smoke sensor. According to the method, fault detection and repair are carried out in each key stage of the assembly process, so that the assembly quality of each part is ensured; service is provided for final vehicle off-line fault diagnosis, and it is ensured that detection is more efficient and accurate after vehicle assembly is completed; full-cycle fault diagnosis is realized, and the precision and efficiency of fault detection are improved; the rework rate and the maintenance cost are reduced, and the reliability and the service life of the whole vehicle are improved.

The invention relates to the technical field of mechanical intelligent control, in particular to an agricultural tractor body leveling control method and system, and the method comprises the following steps: constructing a data collection device of an agricultural tractor, and obtaining the inclination angle of the agricultural tractor body according to the data collection device; a multi-degree-of-freedom cooperative decoupling control framework is established, and a preliminary leveling control instruction of the agricultural tractor is obtained in combination with the vehicle body inclination angle; obtaining a terrain discrete elevation point set of the agricultural tractor, and constructing a terrain elevation prediction model according to the terrain discrete elevation point set; based on the preliminary leveling control instruction, utilizing the terrain elevation prediction model to obtain an optimized leveling control instruction of the agricultural tractor; and the vehicle body inclination angle is regulated and controlled according to the optimized leveling control instruction, and vehicle body leveling of the agricultural tractor is achieved. The operation stability, the adaptability and the intelligent level of the agricultural tractor in the unstructured terrain are improved.

The cultivator for sweet potato planting comprises a supporting frame dragged to the tail of an agricultural tractor, a first transmission case is installed in the middle of the supporting frame, second transmission cases are installed on the two sides of the supporting frame, and the first transmission case and the second transmission cases are connected through universal shafts. A soil turning claw is driven by the second transmission case corresponding to the bottom of the support frame, a furrow opener is mounted on the support frame corresponding to the rear side of the soil turning claw, the furrow opener comprises two side turning plates, and the free ends of support rods corresponding to the two side turning plates are adjustably fixed through bolts and are used for adjusting the opening angles of the two side turning plates. The furrow opener can be adjusted in a lifting mode, meanwhile, the distance between the turning plates on the two corresponding sides can be adjusted through the supporting rods, the ends of the supporting rods are fixed through the bolts after adjustment, the opening width of the turning plates can be adjusted, and different planting requirements are met.

An articulated coupling arrangement for a three-point power lift of an agricultural tractor includes a lifting arm articulated to be raised and lowered by a lifting mechanism, a lifting spindle connected to a free end of the lifting arm in a bearing position for pivoting actuation of a lower link having a coupling arrangement for reversible attachment of an attachment interface, first and second opposing fork cheeks with receiving bores flush along a joint axis being formed on the lifting spindle, through which receiving bores a retaining bolt is guided, and a bearing ball guided on the retaining bolt being supported on a stop formed on the retaining bolt such that the bearing ball can be braced by a fastening element engaging the retaining bolt with respect to the first fork cheek in a rotationally conjoint manner in a predefined coupling position between the first and second fork cheeks.

The invention discloses an electronic traction control method and device of an extended-range tractor and a storage medium in the technical field of agricultural tractors. The method comprises the steps that the final output vehicle speed is calculated according to the first positioning speed, the second running speed, the third estimation speed and the fourth motor speed; calculating actual slip rates of the four wheels according to the final output vehicle speed and the wheel speeds of the four wheels; based on the current road adhesion coefficient obtained in real time and a pre-constructed road mu-lambda characteristic database, the optimal slip rate of the four wheels is obtained; calculating a slip rate difference value and a slip rate difference value change rate based on the optimal slip rate and the actual slip rate; when the actual slip rates are all smaller than the preset minimum slip rate, torque required by a driver is output; and when the change rate of the slip rate difference value exceeds a preset change rate threshold value, outputting a correction torque output by a fuzzy PID control framework. The technical problem of working condition limitation caused by dependence on tilling depth adjustment in the prior art can be solved.

The invention discloses an intelligent control method for a multi-fuel-tank fuel system of an agricultural tractor, and relates to the technical field of agricultural machinery fuel control, and the method comprises the following steps: under the control of a processor, taking an ignition switch state as a trigger: obtaining a first environment temperature during power-on, and outputting a fuel pipeline switching valve opening / closing signal in combination with the fuel quantity of a low-grade fuel tank; pre-selecting an oil path; after starting, the heating electromagnetic valve is opened and closed according to the temperature of cooling liquid, and the high-grade fuel tank is switched back based on the temperature of fuel oil, so that heating and closed-loop management of an oil path are realized; and when the power is off, taking a second environment temperature, forcibly switching to a low-grade oil way when the temperature is less than or equal to 4 DEG C, operating for a set time, and then flameout, so that the system retains low-grade fuel oil. By automatically switching fuel oil and heating control, reliable starting and economical operation of the tractor in a low-temperature environment can be ensured, low-grade fuel oil is reserved in a pipeline after flameout, and difficulty in restarting is avoided.

The invention discloses a power gear shifting transmission mechanism and a gearbox of an agricultural tractor chassis. The power gear shifting transmission mechanism comprises a first transmission shaft, a first hydraulic wet clutch, a second transmission shaft and a second hydraulic wet clutch. The first transmission shaft comprises a front shaft and a rear shaft, a first gear I, a first gear II, a first gear III and a first gear IV are sequentially arranged on the first transmission shaft from front to back, and the first gear I is arranged on the front shaft; a second first gear, a second second gear and a second third gear are arranged on a rotating shaft of the first hydraulic wet clutch from front to back, the second first gear and the second second gear are meshed with the first first gear and the first second gear respectively, and the second third gear is connected with the first fourth gear in a meshed mode. According to the invention, the first hydraulic wet clutch and the second hydraulic wet clutch are used for respectively controlling the gears above to rotate so as to control the speed change and gear shifting of the gearbox, so that the continuity of power output of the tractor is ensured, and the working efficiency is effectively improved.

A tire analysis method and system for determining characteristic parameters of an agricultural tractor provided with two front wheels supporting two front tires and with two rear wheels supporting two rear tires. A first rotation sensor is mounted on a first wheel, a second rotation sensor is mounted on a second wheel; the agricultural tractor is driven along a straight path; while driving the agricultural tractor along the straight path, the total number of revolutions made by the first wheel and by the second wheel are measured; and at least one characteristic parameter is determined using the total number of revolutions made by the first wheel and by the second wheel.

In a tillage implement for being towed by an agricultural tractor across ground to be towed and having a main frame supporting a plurality of tillage units thereon in which each tillage unit includes a disc supporting arm mounted on the main frame, disc mounting assemblies support respective tillage discs on the disc supporting arms. Each assembly includes a mounting body forming a socket therein and a shaft partly received within the socket so as to support a tillage disc on a hub rotatable on a portion of the shaft protruding from the mounting body. The shaft includes a tapered shaft section received within a tapered socket section in the socket of the mounting body to securely and releasably mount the shaft relative to the mounting body.

The utility model relates to the technical field of agricultural machinery, in particular to a frame of an agricultural tractor, which not only is convenient to adapt to different vehicle types and convenient to disassemble during follow-up maintenance by arranging the frame into a split type, but also enhances the strength and the stability of the frame and is convenient to cope with complex environments. Comprising a body mechanism; the vehicle frame further comprises an adjusting mechanism, a connecting mechanism and a bearing mechanism, the adjusting mechanism is installed on the main body mechanism and fixes the connecting mechanism, the connecting mechanism is installed on the adjusting mechanism and facilitates adjustment of the length of the vehicle frame, and the bearing mechanism is installed on the main body mechanism and bears related equipment.

Title: Two-Wheeled Vehicle Carrier Support on an Agricultural Tractor The invention relates to a load carrier support (1) for an agricultural tractor, characterized in that it comprises: - a frame (2) having attachment points (21) for the front or rear lift arms of an agricultural tractor; - a platform (3); - a rail (4) integrated at least partially into a thickness of the platform (3), the rail (4) extending between the two lateral edges (31) of the platform (3), and defining a receiving groove (40) for the wheels of a two-wheeled vehicle. Figure for the abstract: Fig. 1

1. Name of the Design Product: Autonomous Agricultural Tractor. 2. Use of the Design Product: Tractor housing for automatic transportation or agricultural tillage. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective view.

The utility model discloses a multidirectional spraying mechanism for a soil remediation agent, which belongs to the technical field of soil remediation and comprises an agricultural tractor, a fixed box is fixedly mounted on a matched sweeping board of the agricultural tractor, the inside of the fixed box is divided into a blocky soil treatment cavity and a liquid tank, and a spraying mechanism capable of spraying the remediation agent in multiple directions is arranged above the fixed box. The spraying mechanism and the lead screw sliding rail work to drive the spraying frame to do linear motion along the lead screw, the servo motor is matched to drive the connecting cylinder to rotate in a reciprocating mode, the spraying direction of repairing liquid is continuously changed, the spraying area is wider, the spraying effect is better, the motor drives the rotary tillage wheel to rotate, the rotary tillage wheel blades crush soil of the salinized land, and the spraying effect is better. And the shovel plate and the spiral conveyor are matched to conduct displacement treatment on the crushed blocky soil, the purpose of soil displacement can be achieved without manual assistance, and use is more convenient.

1. The name of the design product: main oil tank of tractor. 2. The use of the design product: main oil tank of agricultural tractor. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

Device (14) for transferring liquid manure from a storage tank (8) to a spreading tank (4) towed by an agricultural tractor (2), comprising a front pipe section (16) with a suction end (12) connectable to the storage tank (8), to which a pump (100) is assigned, and an upper pipe section (28) which is fluidically connected to the pump () and which is adapted for fluidic connection to the spreading tank (4), characterized in that the pump (100) has a motor (110) arranged between at least two pipe sections (112) fluidically connected to the suction port (10) and the upper pipe section (28).

A coupling arrangement for an agricultural tractor comprises a drawbar having a first bar section mounted in a longitudinally movable manner along a predefined adjustment region in a holder for attachment to an underside of a power-take-off transmission housing of the agricultural tractor, and a second bar section situated opposite the first bar section and is guided within adjacent upper and lower supporting cheeks of a coupling carrier plate and can be fixed therein in one of a plurality of coupling positions along the predefined adjustment region by a securing element. At least along the predefined adjustment region, the drawbar is configured as an I profile which runs upright within the holder and has upper and lower flanges which are connected by a web. Left and right inner protrusions on the holder are positioned on both sides of the web of the I profile.

The hydraulic control system applied to the small agricultural tractor comprises a main valve body, a first oil port is formed in the main valve body, the inlet end of the first oil port is connected with an external hydraulic oil system, and the outlet end of the first oil port is connected with a sequence valve used for controlling the pressure of hydraulic oil to be kept at a preset pressure value; the outlet end of the sequence valve is respectively connected with a pressure reducing valve and a priority valve; the outlet end of the pressure reducing valve is connected with a steering valve set, and the steering valve set conducts pressure reduction on the hydraulic oil output by the first oil port through the pressure reducing valve so as to control steering of the small agricultural tractor. The outlet end of the priority valve is respectively connected with a leveling electromagnetic valve and a lifting valve, and the priority valve controls the flow distribution of the hydraulic oil so as to control the automatic leveling and lifting of the rotary tillage accessory on the small agricultural tractor. The steering valve group, the leveling electromagnetic valve and the lifting valve are integrated on one main valve body, so that the steering valve has the characteristics of compact structure and small size, and is suitable for small agricultural tractors.

The invention relates to the technical field of tractors, in particular to an agricultural tractor body stabilizing system which comprises a front axle hydraulic lifting system, a front axle is lifted and lowered through a hydraulic cylinder and a control valve, the system combines hydraulic pressure compensation and flow compensation technologies, and the lifting amplitude is automatically adjusted according to the load change of the front axle; and the pressure and flow compensation control system is used for adjusting hydraulic flow and pressure through a hydraulic control unit. By combining a hydraulic lifting system, pressure flow compensation control, intelligent feedback control and a high-precision sensor, an efficient and intelligent agricultural tractor body stabilizing system can be designed. The system can automatically adjust the height of the front axle, improve the grounding efficiency of the front wheels, reduce pitching and optimize traction distribution according to the road condition and load change, so that the driving speed and stability are improved.

This invention discloses a method and system for constructing a lifespan degradation model and predicting the lifespan of an agricultural tractor battery system. The method includes: First, constructing a cyclic aging model and a calendar aging model for the agricultural tractor battery system. The cyclic aging model captures the influence of temperature on battery degradation and the role of different aging mechanisms during the cyclic use of the agricultural tractor battery system. The calendar aging model captures the capacity degradation of the agricultural tractor battery system during storage. The model parameters of the cyclic aging model and the calendar aging model are obtained by fitting corresponding experimental data, thus constructing the cyclic aging model and the calendar aging model. Then, using the calendar aging model as the primary model, the cyclic aging model and the calendar aging model are fused to construct a lifespan degradation model that can accurately predict the lifespan degradation of the agricultural tractor battery system. The lifespan degradation model can accurately predict the amount of lifespan degradation of the agricultural tractor battery system.

The invention relates to the technical field of tractors, in particular to an agricultural tractor capable of reducing turning radius, which comprises a tractor body, two front wheels are rotatably mounted at the front end of the tractor body, two rear wheels are rotatably mounted at the rear end of the tractor body, and a cab is arranged above the tractor body; the steering mechanisms are arranged on the front side and the rear side of the tractor body, each rotating mechanism comprises a rear axle small assembly and a front axle small assembly, and the steering mechanisms are used for driving the tractor body to conduct steering operation; and the bowing mechanism is arranged between the rear axle small assembly and the front axle small assembly, and the bowing mechanism is used for being matched with the steering mechanism for steering and optimizing the turning radius. Compared with the prior art, the steering mechanism is arranged to be matched with the bowing mechanism, higher control stability and reliability are provided on rugged terrains and muddy road surfaces, the flexibility of the tractor is greatly improved in the operation process, and the tractor can meet various complex environment requirements.

The invention provides a trailer length self-adaptive farm tractor inversion control method and equipment. The method comprises the following steps: determining a system function of a tractor connected with a trailer inverted library; the tractor is controlled to drag the trailer to a preset range near the access center line of the grain depot gate, and an initial difference function of the trailer and the standard trailer is established; adjusting the initial difference value function into an adjustable difference value function according to a system function, loading an inverted library auxiliary adjustment variable in the adjustable difference value function to obtain a tractor-trailer inverted library system function, and determining a self-adaptive numerical range of a distance from the center of a trailer axle to a trailer hook hanging point; and controlling and adjusting the tractor-hanging bucket inverted warehouse system function by adopting the inverted warehouse auxiliary adjusting variable, ensuring that the hanging bucket can be adjusted to the grain depot gate in-out center line by the adjustable system function, and keeping the reverse direction of the hanging bucket parallel to the grain depot gate in-out center line. According to the invention, the warehousing operation efficiency of crops in busy farming seasons is improved.

The invention relates to a clutch device (1) for an agricultural tractor, comprising a friction clutch (5), which has a counter plate (2), a pressure plate (3) which can be axially moved relative to the counter plate (2), and a clutch disc (4) which can be frictionally pressed between the counter plate (2) and the pressure plate (3), and comprising an actuating device (6) for axially moving the pressure plate (3), an actuating lever (7) of the actuating device (6) being pivotably mounted on a bearing device (8) fixed to the housing and being axially movably coupled to the pressure plate (3) indirectly via an actuating device (6) intermediate lever (9) which is pivotally mounted on the actuating lever (7). The radially inner end (10a) of the actuating lever (7) is coupled to an axially movable actuating ring (11), and the radially inner end (12a) of the intermediate lever (9) rests against a bearing surface (13) of an adjustable ramp device (14) while the radially outer end (12b) thereof is axially movably coupled to the pressure plate (3). The ramp device (14) is designed to adjust the actuating lever (7) starting position, which can be changed due to a wear-induced movement of the pressure plate (3) relative to the counter plate (2), and the ramp device (14) has a drive (16) which is controlled on the basis of wear and comprises a biasing device (17), said biasing device being designed to store drive energy for the ramp device (14), and a blocking device (18), said blocking device blocking the biasing device (17) in a blocking state. The blocking device (18) additionally has a coupling mechanism (39).

The invention relates to a transmission arrangement (30) for a drive train (20) of an agricultural tractor (10), comprising a transmission device (40) and a transmission unit (80) arranged downstream in the power flow, which transmission unit has two clutches (82, 84) with two transmission input shafts (86, 88). The transmission device (40) comprises a mechanical transmission branch (64) and a variable transmission branch (66) with a magnetic-electric epicyclic gear stage (58) having an inner rotor (60), an outer stator (56), and a rotatable modulation ring (62) therebetween. Electrical power from an electric machine (52) coupled to the input shaft (44) can be transmitted to the stator (56) of the epicyclic gear stage (58). The stator (56) can be controlled to rotate the modulation ring (62).A coupling device (180) with a planetary gear (182) is arranged between the modulation ring (62) and the two transmission input shafts (86, 88) such that the modulation ring (62) is connected in a rotationally fixed manner to a planetary gear carrier (186), that a first sun gear (190) of the planetary gear (182) is connected in a rotationally fixed manner to the rotor (60), and that a second sun gear (188) of the planetary gear (182) is connected in a rotationally fixed manner to the input side (92) of both clutches (82, 84). The invention further relates to an agricultural tractor (10) comprising such a transmission arrangement (30).

The utility model provides a single-motor driving system of an agricultural tractor. The single-motor driving system comprises a driving motor, a three-gear gearbox, a battery pack, a motor controller, an operation control end, an encoder and an electronic hydraulic control device. According to the single-motor driving system of the agricultural tractor, a traditional fuel engine is completely replaced by the single motor, the single motor serves as a kinetic energy output unit, and therefore one-to-one replacement in the true sense is achieved. The highly integrated driving system not only achieves the function of an MCU (microcontroller unit), but also achieves the function of a VCU (vehicle control unit), can effectively achieve the maximization of resource utilization, and guarantees the reduction of the manufacturing cost and the use cost. The problem that in the prior art, no stable and efficient solution exists in the field of electric upgrading and reconstruction of a fuel tractor driving system, and the upgrading and reconstruction process of a fuel tractor is seriously hindered is solved.

The invention relates to an agricultural tractor. A steering unit of an agricultural tractor is coupled to a coupled body located in a power generation chamber. According to the invention, the assembly of the cab and the transmission can be maintained, and the vibration and noise of the riding space can be reduced.