3373 results about "Tractor" patented technology

The invention relates to the technical field of agricultural equipment, in particular to a hybrid tractor whole machine dynamic property evaluation method fusing multiple working condition parameters, which comprises the following steps: acquiring an environment working condition parameter set, an operation task parameter set and an energy flow dynamic parameter set in real time; a dynamic coupling relation mathematical model is constructed based on the parameter set, the whole machine dynamic property characteristic values of the steady state working point and the transient working point are calculated respectively, and a whole machine dynamic property evaluation index set is generated; inputting the evaluation index set into a hardware-in-the-loop simulation platform, and verifying the effectiveness of the evaluation indexes through multi-modal working condition simulation; and constructing a three-dimensional dynamic property evaluation map based on the verified evaluation indexes, dividing dynamic property partitions, outputting the dynamic property partitions to the vehicle-mounted intelligent terminal in real time, and generating a self-adaptive control instruction set when entering a failure area. According to the invention, multi-source information fusion modeling, all-working-condition dynamic response evaluation and visual map feedback can be realized, and the dynamic adaptability and regulation and control intelligence of the hybrid tractor in a complex operation scene are improved.

The invention provides a series-parallel hybrid power tractor driving system. The series-parallel hybrid power tractor driving system comprises an engine, a P1 motor used for generating electricity or starting the engine, a PS motor used for independent or coupled driving and a series-parallel hybrid power tractor transmission system. The invention further provides a control method of the driving system. Confluence and diversion of engine power and speed change of the tractor are controlled through the P1 motor, the PS motor, the rotating speed coupling mechanism, the torque coupling mechanism, the clutch and the brake. According to the series-parallel connection type hybrid power tractor driving system, a multi-mode driving mode can be achieved to adapt to operation in a complex environment, the dynamic property and economical efficiency of a tractor are improved, and the series-parallel connection type hybrid power tractor driving system has the advantages of interval stepless speed change, precise control and the like.

The invention discloses a multi-mode cooperative tractor intelligent chassis control method and system, and the method comprises the steps: obtaining visual image data, chassis pressure data and position coordinate data, carrying out the data fusion of the above data, and constructing an environment state matrix; determining the type of an obstacle according to the environment state matrix, obtaining an obstacle characteristic parameter set, calculating the collision risk of the tractor and the obstacle, and calculating a risk coefficient; if the risk coefficient is larger than a preset safety threshold value, the suspension rigidity and the damping coefficient are calculated according to the obstacle type and the topographic features, and suspension control parameters are obtained; and acquiring ground surface hardness data of a to-be-operated area, adjusting the suspension control parameters according to the ground surface hardness data, and generating a chassis response parameter set. The problem that chassis parameters of a tractor chassis cannot be adaptively adjusted in complex terrains is solved, and the effects that the chassis parameters of a tractor are automatically adjusted according to real-time data, and the operation efficiency and safety are improved are achieved.

The invention relates to the technical field of automatic driving, in particular to a driving control method and system for an unmanned electric tractor, and the method comprises the following steps: obtaining humidity data to generate a state diagram, judging slip to trigger traction adjustment based on the state diagram, analyzing a slope recognition risk to generate a slope parameter, and reading a braking force to judge, coordinate and generate a distribution instruction. According to the method, the humidity difference is obtained through multi-point soil humidity monitoring, distribution characteristics are extracted, accurate sensing of the state of an operation area is achieved, the wheel rotating speed and traction force signals are combined, slipping is recognized in advance, the traction force is dynamically adjusted, and the driving force is kept stable; based on joint analysis of gradient change and vehicle state, slope risk is recognized in advance, optimization control is performed, braking force of front and rear wheels is dynamically distributed, slippage caused by unbalance is avoided, safety of complex terrains is improved, and vehicle stability, path control precision and energy utilization efficiency are improved through cooperation of multi-dimensional data perception and dynamic prediction.

The invention relates to a tractor test data acquisition and fault diagnosis system, which belongs to the technical field of agricultural machinery, and comprises a multi-source heterogeneous data acquisition module for performing real-time data acquisition on the working state of the whole tractor through a sensor group deployed at a key part of the tractor; collecting a vibration signal measured by an engine body acceleration sensor; acquiring a real-time rotating speed measured by an engine rotating speed sensor; load torque measured by a torque sensor of the power output shaft is collected; the current instruction rotating speed obtained by the vehicle-mounted control unit is collected; the collected original data are transmitted to the dynamic state evaluation module in real time; the dynamic state evaluation module is used for receiving the multi-dimensional data; carrying out fusion analysis on the multi-dimensional data based on an instantaneous impact index model; according to the method, the system obtains the comprehensive and robust perception capability for the risk, the early-stage and composite impact risk can be accurately recognized, and the misjudgment rate caused by single index fluctuation is greatly reduced.

The invention provides an unmanned tractor path planning method based on an improved PSO fusion DWA optimization algorithm. The method comprises the steps that a grid map is initialized; forming a preliminary global path by using an improved PSO algorithm; performing local refined optimization on the initial global path through single-dimensional neighborhood disturbance and greedy selection; discrete path serialization, redundant node elimination and smoothing processing are carried out on the initial global path through a greedy optimization method; a path point sequence of a final optimized global path is completely reserved as a local target point of a DWA algorithm, local path planning and real-time obstacle avoidance are guided, speed sampling and trajectory prediction are performed based on a kinematic model, speed constraint and the local target point, and an optimal prediction trajectory and speed space are selected through an improved evaluation function in the DWA algorithm. The method effectively solves the problems that an existing planning method is poor in smoothness, long in planning time, multiple in inflection points, discontinuous in path curvature and incapable of achieving global optimum.

The invention discloses a power system energy management method and equipment based on hydrogen energy hybrid power, belongs to the technical field of energy management, and is used for solving the technical problems that the random load characteristic of field operation of an existing tractor is complex, and a hybrid power tractor is uneven in ploughing and sowing under the complex terrain operation working condition and the tillage state. The method comprises the following steps: collecting multi-modal data of a farmland environment; performing vehicle speed prediction processing on the tractor under related environment characterization to obtain a dynamic prediction vehicle speed of the tractor; carrying out rolling optimization processing on the dynamic prediction vehicle speed under related output power to obtain the driving demand power of the tractor; and superposing the driving required power and the pre-obtained tillage tool required power to obtain the total required power of the power system, decomposing the required power in a frequency domain according to a formulated variational mode decomposition rule, and endowing the required power to a driving power generation system formed by a fuel cell, a power cell, a hydrogen internal combustion engine and a generator.

The utility model belongs to the technical field of tractors, and particularly relates to a tractor combined motor gearbox assembly which comprises a gearbox body, a generator and a driving motor are coaxially arranged on the side wall of the gearbox body, the outer end of an input shaft of the generator is in transmission connection with the crankshaft output end of an engine, and an input shaft is supported on the gearbox body. The input shaft is a hollow shaft, one end of the PTO shaft axially penetrates through the output shaft of the driving motor and is connected with a spline at the inner end of the input shaft of the generator, the other end of the PTO shaft is supported in an inner hole of the input shaft through a lining, the input shaft is connected with the inner end of the output shaft of the driving motor through a spline sleeve, and the gearbox body supports the output shaft. A gear transmission assembly is arranged between the input shaft and the output shaft. The PTO shaft is directly connected with the output shaft of the engine, the engine provides power for the generator to provide electric energy for the driving motor, then the driving motor provides power for the gearbox assembly, the operation requirement of the tractor is met, and stepless speed change can be achieved.

The invention relates to the field of vehicle control, and particularly discloses a tractor hybrid power cooperative control method, system and device and a medium, and the method comprises the steps: collecting state parameters of a whole vehicle, an agricultural implement and a power system in real time, employing a fusion rule and a real-time optimized energy management strategy to analyze an operation mode, and calculating an initial power distribution target; dynamic coordination is carried out by taking optimal system efficiency and battery state maintenance as targets, smoothness verification and closed-loop feedback correction are carried out on an output instruction, and a final control instruction is generated, issued and executed; the system correspondingly comprises a perception analysis module, a decision making module, a coordination verification module, an execution module and a learning evolution module. By constructing full-link closed-loop control, self-adaptive dynamic optimization and reliable cooperation of the power system are achieved, the online learning ability is achieved, the problems that in a traditional method, control is extensive, response is delayed, and self-adaptability is lacked are effectively solved, and the operation economical efficiency, smoothness and long-term adaptability of the tractor are improved.

The invention relates to the technical field of tractor heat dissipation, in particular to a modular integrated tractor heat management method which comprises the steps that an engine radiator, a condenser, an engine oil radiator and a hydraulic radiator are arranged on the air outlet side of a cooling fan with the fan blade angle adjustable in a centralized mode; when the tractor operates in a working condition state, actual temperature data of an engine heat dissipation module, a transmission system heat dissipation module, a hydraulic system heat dissipation module and an air conditioning system heat dissipation module are collected; preset temperature difference data and preset fan rotating speed data corresponding to the working condition state are obtained; calculating an actual temperature difference value corresponding to the preset temperature difference value; and judging the actual temperature difference value of each item and the corresponding preset temperature difference value in real time, and controlling the wind direction and the rotating speed of the cooling fan in real time according to the judgment result. The invention further provides an electro-hydraulic control heat dissipation system applying the thermal management method. Heat dissipation and reverse blowing cleaning self-cleaning are carried out on all radiators of the tractor, the power loss is reduced, and the energy loss is reduced.

The invention discloses a tractor transportation operation working condition construction method based on improved particle swarm optimization and KMeans fusion, and relates to the technical field of agricultural machinery working condition analysis. The method comprises the following steps: acquiring original data of tractor transportation operation through a plurality of data acquisition modes, and carrying out preprocessing and three-stage screening to obtain an effective kinematics fragment; selecting multi-dimensional characteristic parameters to construct a characteristic matrix, and performing data dimension reduction by adopting principal component analysis; optimizing a KMeans clustering initial center by using an improved particle swarm optimization (IPSO) algorithm which introduces a dynamic inertia weight and a Gaussian mutation strategy, and performing clustering analysis on the feature space after dimension reduction; and selecting representative fragments based on feature similarity, and synthesizing a standardized working condition curve by taking the sum of average relative errors of all feature dimensions as a target function. According to the method, the problems that a traditional clustering algorithm is prone to falling into local optimum and the working condition construction accuracy is insufficient are solved, the constructed working condition can truly and comprehensively reflect the actual transportation operation characteristics of the tractor, and a reliable basis is provided for tractor power system optimization, operation efficiency improvement and energy consumption reduction.

The present invention relates to the technical field of tractors. Disclosed are a hybrid system and a tractor. The hybrid system comprises an engine, a generator, a battery, a driving motor, a power output device, a rear axle, a brake, a first gear shifting device and a power transmission module, wherein the power transmission module comprises a planet gear assembly, a first transmission assembly, a second transmission assembly and a third transmission assembly. An output shaft of the engine is connected to the power output device, the driving motor is in transmission connection with a sun gear, the sun gear is in transmission connection with a planet gear, the planet gear is in transmission connection with a ring gear, and a planet carrier is connected to the planet gear. The engine is connected to the generator, the brake is arranged on the ring gear, and the generator is in transmission connection with the ring gear by means of the first gear shifting device. The planet carrier is connected to the rear axle, the generator is connected to the battery, and the battery is connected to the driving motor. The hybrid system disclosed by the present invention is a simplified system, and saves on costs.

The invention discloses a vehicle power control method and device, electronic equipment, a storage medium and a vehicle, and relates to the field of vehicle control, and the vehicle power control method comprises the steps that a combination of a tractor is matched based on an electric drive trailer, and a vehicle-mounted power source comprises an engine and a motor; the whole vehicle torque is output based on power output coupling of an engine and a motor; acquiring control state and vehicle state information; according to the control state and the vehicle state information, torque demand information is generated; the information of the torque demand comprises torque demand information of the torque direction and the torque size of the driving or braking working condition; obtaining torque capacity information of the whole vehicle; the whole vehicle torque capability information comprises torque capability information of an engine and a motor; acquiring information of a torque economy strategy based on the torque capabilities of the engine and the motor; and based on the torque capacity of the engine and the motor and the torque economy strategy, the whole vehicle torque output state is controlled to meet the torque requirement.

The present disclosure relates to a system configured to enhance the monitoring and control of agricultural equipment, particularly when different tools or implements are attached to an agricultural vehicle such as a tractor. In examples, this system is equipped with sensors that detect changes in the equipment's configuration, such as when implements are swapped or adjusted. Upon recognizing these changes, the system selects an appropriate sensor profile to effectively monitor the tool and the environment surrounding the agricultural vehicle and the agricultural implement. Monitoring the agricultural system allows for real-time adjustments to the vehicle's steering and operational functions, ensuring optimal performance. Additionally, the system alerts the operator if manual intervention is needed and autonomously adapt to new configurations, which may include compensating for wear or misalignment of the implements, according to examples.

Disclosed is a drive arrangement for a tractor. In one example, the drive arrangement includes a first powertrain, a power take-off for driving a coupled attachment unit, and / or including a pump power take off for driving at least one hydraulic pump. A second powertrain has a vehicle transmission with at least one transmission output for driving at least one vehicle axle. A first electric machine can be coupled in terms of drive to the first powertrain. A second electric machine can be coupled in terms of drive to the second powertrain.

A boat frame bending device for a boat tractor relates to the technical field of metal bending processing and comprises a mounting platform, and four guide square frames are transversely welded on the mounting platform; a C-shaped seat is arranged on each square guide frame in a sliding mode, the opening directions of every two adjacent C-shaped seats are opposite, and the four C-shaped seats are the first sliding seat, the second sliding seat, the third sliding seat and the fourth sliding seat in sequence from left to right; a first bending mechanism is arranged in the first sliding seat, a second bending mechanism is arranged in the second sliding seat, a third bending mechanism is arranged in the third sliding seat, a fourth bending mechanism is arranged in the fourth sliding seat, and side clamping transfer modules are arranged on the inner top face of the first sliding seat and the inner top face of the third sliding seat correspondingly. The inner top faces of the second sliding base and the fourth sliding base are each provided with a center clamping and transferring module. The problems that in the prior art, when bending equipment is used for machining the boat-tractor shipway, machining efficiency is low, compatibility is poor, die changing is slow, precision is poor, and clamping and supporting are single are solved.

The invention discloses an agricultural tillage land preparation machine which comprises a tractor body and a driving wheel, a rotary tillage assembly used for conducting rotary tillage on the ground is fixedly connected to the rear portion of the tractor body through a suspension device capable of being rotationally adjusted, and bearing wheels capable of keeping tightly attached to the ground are arranged below the tractor body. The detection assembly is used for detecting whether the height difference between the driving wheel and the bearing wheel changes or not. According to the invention, the bearing wheel is attached to the ground and cooperates with the detection assembly to detect the height difference between the bearing wheel and the driving wheel, so that the rotary tillage assembly can adjust the rotary tillage depth according to the soil height or humidity change, and the height between the rotary tillage assembly and the ground is adjusted according to the height difference change between the driving wheel and the bearing wheel; the rotary tillage depth of the rotary tillage assembly on the land is kept consistent, and the situation that the fertilizer is too close to or too far away from the seeds, and consequently the seeds are poor in development or die is avoided.

The invention discloses an agricultural machinery intelligent path planning system and method based on multi-sensor fusion, and relates to the technical field of agricultural machinery automation control. Comprising an AI large model learning module, a visual identification module, a data analysis module and an intelligent control module. The AI large model learning module learns an operation instruction of the agricultural implement controller; the visual identification module collects and extracts agricultural implement controller panel feature information; the data analysis module analyzes, diagnoses and analyzes the feature information; and the intelligent control module transmits the analyzed data to an intelligent driving system of the tractor and executes corresponding control actions. The method solves the problems that the agricultural implements cannot be subjected to associated control under different communication protocols, and the existing scheme is high in cost, complex, low in efficiency and the like, has the advantages of high compatibility, low cost, high efficiency, high adaptability, high safety and the like, and can be widely applied to the field of modern agriculture.

The utility model provides a leveling and deviation-adjusting composite mechanism of agricultural machinery. The composite mechanism is used for connecting and adjusting the positions of a hilly and mountain tractor and an agricultural implement. The combined mechanism comprises a tractor connecting assembly, a machine tool connecting assembly and a posture adjusting assembly. The tractor connecting assembly comprises a tractor traction frame, the machine tool connecting assembly comprises a middle frame and a machine tool traction frame, and the middle frame can rotate relative to the tractor traction frame; the two ends of a leveling hydraulic cylinder and the two-way reciprocating deviation adjusting hydraulic cylinder of the posture adjusting assembly are connected with a tractor traction frame and a middle frame correspondingly, and the posture adjusting assembly stretches out and draws back to drive the middle frame to rotate. Telescopic piston rods are arranged at the two ends of the two-way reciprocating deviation adjusting hydraulic cylinder, and the two ends of the two-way reciprocating deviation adjusting hydraulic cylinder are connected with the two ends of the machine tool traction frame through connecting pieces to drive the machine tool traction frame to slide left and right; the leveling and deviation adjusting composite mechanism can achieve transverse dip angle adjustment of the agricultural implement and adjustment of the left-right position of the agricultural implement.

The invention provides an unmanned aerial vehicle and unmanned tractor collaborative operation method, which comprises the following steps: step 1, scanning and constructing a two-dimensional grid map of a field environment through a laser radar installed on an unmanned aerial vehicle, and sending the two-dimensional grid map to an unmanned tractor; step 2, the unmanned tractor carries out field full-coverage path planning based on the two-dimensional grid map and by considering tractor steering constraints; step 3, performing a path tracking task by the unmanned tractor based on field full-coverage path planning; and 4, when the path tracking task is carried out, information obtained by real-time scanning of a laser radar carried by the robot is fused, obstacle detection is carried out, and the path is dynamically updated to be a collision-free path according to the obstacle.

A commercial vehicle having various GVWR configurations with a vehicle body with two or more axles, and a cab that does not pivot relative to the vehicle body, and a battery-electric-powered or hydrogen-electric-powered propulsion system. The vehicle has a center of gravity that is substantially lower, and a track width which is substantially narrower, than an articulating tractor-trailer combination with a trailer size comparable to the vehicle body of the present invention, providing substantially increased stability, and with all axles preferably being steerable E-axles, substantially improving the turning and trailing of the vehicle. Additional attributes are improved safety, increased payload weight and cubic capacity, higher productivity and lower maintenance costs. Many other advantages flow from this vehicle design.

The invention discloses a die-casting die for forging a tractor chassis, and relates to the technical field of high-horsepower tractor production, the die-casting die comprises a first side plate and an exhaust assembly, one side of the first side plate is provided with a fixed die, one side of the fixed die is provided with a movable die, one side of the movable die is fixedly provided with a die holder, and the interior of the die holder is slidably connected with a driving rod; the exhaust assembly is arranged at the end of the driving rod and comprises a rotating shaft. In the mold closing process, the driving rod is in linkage with the limiting plate and the rotating roller, the energy storage spring is triggered to release energy to drive the rubber coating head to knock the movable mold, the vibration effect promotes liquid metal to evenly flow, bubbles are discharged, the casting forming quality is improved, the driving rod is reversely operated during demolding, vibration is triggered again, and part adhesion is reduced; according to the design, self-adaptive vibration assistance in the forming stage and the demolding stage is achieved, internal tissue compactness and demolding smoothness can be synchronously optimized without an additional device, the product defect rate is remarkably reduced, and the production period is shortened.

The utility model belongs to the technical field of agricultural instruments and provides a tractor steering gear and a tractor, the tractor steering gear comprises a frame assembly, an accessory suspension mechanism and a suspension restraint mechanism, the accessory suspension mechanism is pivotally connected to the tail part of the frame assembly and is used for dragging a working accessory; and the suspension restraining mechanism is used for locking control between the accessory suspension mechanism and the frame assembly. According to the utility model, the accessory suspension mechanism used for dragging the working accessory for operation is pivotally connected to the tail part of the frame assembly, so that the steering stability of the tractor can be improved.

The invention relates to a detachable rotary cultivator, and belongs to the technical field of rotary cultivators, the detachable rotary cultivator comprises a rotary tillage mechanism detachably connected to the exterior of a tractor, the rotary tillage mechanism is composed of a rack, side plates, a rotary tillage shaft and rotary tillage cutters, and a soil loosening device used for pre-loosening soil before rotary tillage is arranged outside the side plates and the rack; a compaction structure used for conducting compaction treatment on the ploughed soil is arranged outside the machine frame, and a driving mechanism used for operating the rotary tillage shaft, the soil loosening device and the compaction structure in a linkage mode is arranged outside the side plates. The soil loosening device comprises a hinge seat fixedly connected to the top of the rack and a swing arm hinged to the interior of the hinge seat. The machine has the advantages of high efficiency, energy conservation, environmental protection and the like, integrated operation of soil pre-loosening, rotary tillage, compaction and spraying treatment is realized through a mechanical linkage principle, the rotary tillage resistance is remarkably reduced, the service life of a blade is prolonged, the soil quality is optimized, and the operation efficiency is improved.

The invention provides a paddy field tractor power gear shifting transmission system. The paddy field tractor power gear shifting transmission system comprises a power gear shifting mechanism; an input shaft of the main and auxiliary speed change mechanism is in transmission connection with the first output end of the power gear shifting mechanism, and an output shaft of the main and auxiliary speed change mechanism is in transmission connection with a central transmission mechanism; the input end of the PTO clutch is in transmission connection with the second output end of the power gear shifting mechanism; the input end of the PTO speed change mechanism is in transmission connection with the output end of the PTO clutch, and the output end of the PTO speed change mechanism is in transmission connection with a PTO output mechanism. Power is obtained from the second output end of the power gear shifting mechanism through the PTO clutch, and the space of the tractor in the length direction is saved; through the PTO speed change mechanism, the output rotating speed change capacity of the tractor PTO is improved, and the tractor PTO speed change mechanism can be suitable for various PTO operation modes.

The present invention relates to a wireline expansion tool for setting of a completion tubular component such as a straddle, a liner, a patch or a liner hanger, the wireline expansion tool having an axial extension and comprising an electric motor connectable with and powered through a wireline, an axial force generator driven directly or indirectly by the electric motor for providing a movement along the axial extension, a radial expansion tool section connected with the axial force generator, and a completion tubular component, arranged at least partly around at least part of the radial expansion tool section for expanding at least part of the completion tubular component, wherein the radial expansion tool section comprises a first element movable along the axial extension by the axial force generator and a support structure connected with the first element, the support structure supporting the completion tubular component during expansion, and the first element being connected with the support structure for moving the support structure at least partly radially outwards for simultaneous expanding the completion tubular component. The invention also relates to a downhole tool string comprising the wireline expansion tool and a driving unit, such as a downhole tractor, for propelling the wireline expansion tool forward in the well.

The invention discloses a hydraulic drive digging depth intelligent regulation and control system and method for a peanut harvester. The harvester comprises a tractor, a rack, a seedling pressing roller, a digging shovel, a conveying and lifting mechanism and a seedling turning and laying mechanism. And a lifting adjusting oil cylinder is arranged between the tractor and the rack. The conveying and lifting mechanism comprises a chain rod assembly, a driving wheel assembly, a driven wheel assembly and a vibrating wheel mechanism. The detection assemblies are arranged at the two ends of the seedling pressing roller and comprise elastic connecting mechanisms and linear potentiometers. The conveying lifting mechanism is provided with a high weight detection mechanism and a low weight detection mechanism. Each weight detection mechanism comprises a chain wheel, a middle shaft and a pressure sensor. The linear potentiometer and the pressure sensor are connected with a controller, and the controller controls the lifting adjusting oil cylinder to stretch out and draw back through a proportional electromagnetic valve. The weight detection mechanism estimates the weight of peanut crops through chain pressure and calculates the soil removal rate, the elastic connection mechanism is combined with the ground profiling and linear potentiometer reflects the digging depth, the controller adjusts the depth and the dip angle of the digging shovel accordingly, digging missing, fruit damage and overlarge resistance are avoided, and intelligent regulation and control are achieved.

The present invention relates to a wireline intervention tool string (1) for operating in a well (2) having a longitudinal axis, a top (51) and a bottom (52), comprising a tool housing (3) having a longitudinal tool axis, a first part connected to a wireline and configured to face the top of the well, the first part comprising an anchoring section (6) and configured to be rotationally stationary during operation, an operational tool (7) configured to rotate relative to the first part during operation, a driving unit (8) arranged in the first part and configured to provide rotational force to the operational tool, the driving unit being powered via the wireline, and a vibration-generating unit (9) for providing vibration force to the operational tool, wherein the wireline intervention tool string further comprises a vibration-dampening unit (10) arranged in a longitudinal position uphole relative to the operational tool for preventing vibrations generated by the vibration-generating unit from releasing tool sections from other tool sections of the wireline intervention tool string, at least in the first part. The invention also relates to downhole tool system comprising the wireline intervention tool string and a driving section / downhole tractor (15).

The present invention relates to the field of tractors, and discloses a vehicle tractor. The vehicle tractor includes a traction front arm which is inserted and mounted in a trailer inserting end, and a traction rear arm which is mounted at a vehicle head connecting end. Through an arranged insertion prompting mechanism, under the action of damping telescopic rods and a connecting spring, a turning-over plate is abutted against the vehicle head connecting end, whereby a limiting effect is achieved, and the vehicle head connecting end is prevented from sliding; and on the other hand, when the turning-over plate turns over, the meshing gear on a front side of the turning-over plate moves upwards to be meshed with the transmission gear, at this time, the transmission gear rotates clockwise, connecting arms connected to the transmission gear through transmission shafts rotate clockwise along with the transmission gear.