526results about "Non-deflectable wheel steering" patented technology

An electric power assisted steering assembly comprises a steering mechanism which operatively connects a steering wheel to the roadwheels of a vehicle, a torque sensing means adapted to produce a first output signal indicative of the torque carried by a portion of the steering mechanism, a means for producing a second output signal indicative from a signal indicative of the angular velocity of the portion of the steering mechanism, an electric motor operatively connected to the steering mechanism, a signal processing unit adapted to receive the two output signals and to produce therefrom an overall torque demand signal representative of a torque to be applied to the steering mechanism by the motor, and a motor drive stage adapted to provide a drive current to the motor responsive to the torque demand signal. The overall torque demand signal includes a damping component that is dependent upon the second output signal. The means for producing the yaw damping component includes a filter having one pole and one zero, and in use the second signal is passed through the filter to produce the damping component, the frequency of the pole and zero being selected such that the filter provides a band between the pole and zero within which the phase of the filtered second signal and the velocity signal are further out of phase or in phase than within the band.

Tracked vehicles include a track assembly, a powertrain assembly to power the track assembly, and a steering assembly configured to provide a torque to the track assembly. A steering motor is operably coupled to the powertrain assembly to effectuate a steering of the vehicle. A backup steering assembly is configured to provide backup steering capability to the tracked vehicle. The tracked vehicle also includes a plurality of steering modes, as well as a plurality of suspension components configured to increase rider comfort.

The invention relates to the technical field of orchard automatic navigation deviation correction, in particular to an automatic navigation deviation correction system for an orchard track power platform. Comprising a chassis, a vehicle control unit, a navigation system vehicle-mounted computer, a laser radar, a navigation control box, a navigation antenna, a steering motor, a differential planetary mechanism, a rotating speed sensor, an edge architecture control box, a driving wheel assembly, a servo valve and a steering pump. The mode that the whole vehicle controller regulates and controls the servo valve to conduct deviation rectification is adopted, the deviation rectification response speed is high, the control precision is high, the high-speed operation working condition of the orchard power platform can be adapted, and the operation efficiency is improved; the swash plate plunger steering pump is adopted to drive the steering motor, the driving power is small, the heat balance stability is good, and the cost is low; the differential steering mechanism is adopted as a deviation rectifying executing mechanism, the transmission efficiency of the power platform is not affected, the steering line type is controllable, steering is stable, the overcorrection phenomenon is effectively avoided, the automatic navigation operation precision is effectively improved, and the automatic navigation deviation rectifying stability of the orchard power platform is improved.

The bulldozer has a right first oil channel, a right second oil channel, and a right third oil channel. The right first oil channel guides a portion of the lubricating oil discharged by a hydraulic pump to a right steering brake. The right second first oil channel guides a portion of the lubricating oil discharged by the hydraulic pump to a right planetary gear mechanism. The right third oil channel guides at least a portion of the lubricating oil that has passed through the right planetary gear mechanism to a right steering brake. At least a portion of the planetary gear mechanism is disposed further inside than the right steering brake in a radial direction perpendicular to the center axis of an input shaft.

The invention relates to a steering device (19) comprising a steering gear (35) and an electric machine (39) which can be operated both as an electric motor and as a generator, the steering gear (35) having a first input shaft (36), a second input shaft (37) which is connected (39) to the electric machine, a neutral shaft (18), and a superposition stage (40) which has a first element (45), a second element (46), and a third element (47). At the superposition stage (40), a rotational movement of the first element (45) can be converted into a rotational movement of the third element (47) by superimposing a rotational movement of the second element (46), and by means of the superimposition in the steering gear (35), at least one steering ratio can be expanded to a continuously adjustable steering ratio range.In this case, the at least one steering ratio lies in terms of value between respective ends of the respective steering ratio range, wherein, during the superposition, starting from the at least one steering ratio, the widening takes place in the direction of one end of the respective steering ratio range in the generator operation of the electric machine (39) and in the direction of the other end of the respective steering ratio range in the electromotor operation of the electric machine (39).

Provided are a vehicle control method, a multi-purpose vehicle, and a garden work vehicle. The multi-purpose vehicle includes a drive mechanism, a control mechanism, and an auxiliary control mechanism. The auxiliary control mechanism includes: a control state sensing component, configured to determine a control state of a user with respect to the control mechanism; a traveling state sensing component, configured to determine the traveling state of the multi-purpose vehicle, the traveling state including a straight-line traveling state and a non-straight-line traveling state; and a calibration controller component, configured to determine that the multi-purpose vehicle is traveling abnormally in response to a mismatch between the traveling state and the control state. The calibration controller component is further configured to adjust, in response to determining that the multi-purpose vehicle is traveling abnormally, the operating state of the drive mechanism to match the traveling state with the control state.

A garden tool includes a control assembly, an operating mechanism, a first wheel and a second wheel. The operating mechanism is provided with a detection device for detecting a displacement of the operating mechanism. The calibration method of the disclosure includes: receiving a deviation correction command; comparing an extremum rotating speed of the first wheel with an extremum rotating speed of the second wheel; and when there is a difference between the extremum rotating speed of the first wheel and the extremum rotating speed of the second wheel, correcting a relationship between an output signal of the detection device and an output rotating speed of the control assembly to enable the extremum rotating speed of the first wheel to be the same as the extremum rotating speed of the second wheel.

The invention relates to the technical field of aerial work equipment, in particular to an aerial work platform and a traction walking control method thereof. The power unit is fixedly arranged in the middle of the chassis; the auxiliary walking mechanism is connected with the chassis through a bolt, a first connecting piece and a self-lubricating shaft sleeve; the control oil cylinder acts to realize the angle swing of the coupling auxiliary wheel; the supporting legs are arranged on the periphery of the chassis, and supporting leg oil cylinders and supporting leg control valves are arranged on the supporting legs. The problem that a dragging type aerial work platform is difficult to move in a working place is solved, so that the labor intensity of an operator is relieved, and the purpose of walking freely is achieved.

A work machine includes: a pair of drive wheels that is either front wheels or rear wheels; a pair of non-driving wheels that is the other of the front wheels and the rear wheels; a work device disposed between the front wheels and the rear wheels; a machine body; and a control device including an automatic turn-execution unit configured to execute an automatic turn in a U shape. The automatic-turn execution unit is configured to execute: a gentle turn operation in which the work machine makes a gentle turn; and a counter-rotation turn operation in which the work machine makes a counter-rotation turn after the gentle turn operation.

A new tracked vehicle arrangement with a main vehicle and a trailer, where each of the main vehicle and the trailer have a track assembly on either side, and the tracks of the trailer are driven by the prime mover of the main vehicle. In the longitudinal direction of the main vehicle, only a small fraction (less than 25%) of the length of the main vehicle's cab, which is mounted above the frame, overlies the main vehicle's track assemblies, whereas the fuel tank is located between the cab and the prime mover. In a widthwise direction of the tracked vehicle, the fuel tank at least partly overlies the right and left track assemblies. This provides a counterbalance for the trailer, which has a platform attached by a first pivotable connection to the frame of the main vehicle and by a second pivotable connection to the frame of the trailer.

A personal mobility / utility system includes a housing, first and second dual-shaft electric motors within the housing with each having respective inboard and outboard shafts, first and second traction wheels rotatably attached to the first and second output shafts via first and second wheel clutches, first and second module gears rotatably attached to the first and second inboard shafts via respective first and second module clutches, first and second vertical apertures having respective top openings at a top of the housing and respective bottom openings adjacent the first and second module gears, a sensor array, and a controller for controlling the electric motors and clutches to provide propulsion, steering and braking of the system, extension, retraction and / or rotation of a module inserted into one or both of the vertical apertures, and maintaining the system in an upright position.

A crawler drive for an agricultural work machine, comprising front and rear main wheels, front and rear main frames associated with each respective main wheel, two support wheels, a running belt surrounding the two main wheels, and an articulation point through which the crawler drive is pivotably connected to a body of the agricultural work machine. The two main frames are coupled to one another to pivot about a common pivot axle, the support wheels are arranged on a common support frame, and the support frame is pivotably connected to the front main frame via a support wheel swing arm. The crawler drive further comprises a damping device with at least one piston-cylinder unit and hydraulically acting pressure device. The piston-cylinder unit is coupled at a swing arm end to the support wheel swing arm and at a frame end to the rear main frame.

The invention discloses a self-propelled hydraulic riveting pump station which comprises a movable platform, a hydraulic power system and a control system. The moving platform comprises two groups of moving tracks which are independently driven by hydraulic motors and a platform of the moving tracks; the hydraulic power system is arranged on the moving platform and comprises a riveting hydraulic power system and a driving hydraulic power system; the riveting hydraulic power system and the driving hydraulic power system comprise eight hydraulic pumps in two groups directly driven by the same engine; wherein the two hydraulic pumps are connected in parallel to supply oil to a first hydraulic motor of a first driving oil way to drive a first moving crawler belt, the two hydraulic pumps are connected in parallel to the first driving oil way through a first electromagnetic reversing valve to enhance oil supply to the first hydraulic motor, meanwhile, the two hydraulic pumps are reversed through the first electromagnetic reversing valve to supply oil to a first riveter of a first riveting oil way, and the other set is the same; the control system comprises a wireless driving control system and an electric control system; the walking and riveting device meets various requirements of walking and riveting, can provide power for riveting of short-tail type pulling rivets, pulling-breaking type pulling rivets and the like, and is safe and reliable.

The invention discloses a steering-by-wire fault degradation processing method and system, a vehicle, equipment and a medium, and relates to the technical field of vehicle control. The steering-by-wire fault degradation processing method comprises the following steps that the fault state of a steering-by-wire system of a vehicle is obtained; according to the fault state of the steer-by-wire system, whether a braking system of the vehicle needs to provide steering capacity is judged; if the braking system needs to provide the steering capacity, the needed front wheel steering angle is determined according to the steering angle signal and the vehicle speed; four-wheel braking force needed by the vehicle is determined according to the needed front wheel rotation angle; and controlling the braking system to execute the braking force of each wheel according to the required four-wheel braking force so as to realize front wheel steering. Under the condition that the steer-by-wire system breaks down and loses part of or all steering capacity, extra steering capacity can be provided through four-wheel braking force distribution of the braking system, cross-system redundancy safety is achieved, and the safety of the steer-by-wire vehicle is improved.

The invention discloses a fan blade crack detection robot and a detection method. The fan blade crack detection robot comprises a robot overall frame, a negative pressure adsorption mechanism, a detection mechanism and a camera. A negative pressure adsorption mechanism is arranged in the robot overall frame, four differential motors and rubber wheels are arranged on the two sides of a vehicle body, and a detection mechanism and a camera are arranged on the front side and the upper side of the vehicle body correspondingly. The negative pressure adsorption mechanism is composed of a large sealing cavity and four small sealing cavities, the large sealing cavity is fixedly installed on the upper side of the frame bottom plate, the four small sealing cavities are fixedly installed on one side of the differential motor and connected with the large sealing cavity through corrugated pipes, and meanwhile the lower sides of the large sealing cavity and the small sealing cavities are each provided with a sealing gasket and a square sealing piece. The sealing cavity is tightly attached to the wall face, and crawling of the robot is achieved. According to the invention, a feasible solution is provided for automatic detection of the blades of the power generation fan, and the method has high applicability.

A number of variations may include a system, method, a non-transitory computer readable medium having instructions thereon executable by an electronic processor to implement functionality comprising enhancing the curvature capability of a tertiary rack and pinion actuator by using brake-to-steer while the tertiary rack and pinion actuator is operating.

A vehicle steering assembly for controlling movement of a vehicle having independently rotatable left and right ground-engaging traction elements. The steering assembly comprises a steering handle and a steering controller positioned generally below the steering handle and actuated by movement of the steering handle. The steering handle includes an upright shaft and a laterally-extending crossmember fixed to the top of the upright shaft. A flexible protective cover is attached to the shaft and is configured to prevent dirt and debris from entering the steering controller. The steering handle is shiftable in forward and rearward directions to thereby cause corresponding forward and rearward rotation of both of the left and right traction elements. The steering handle is rotatable in clockwise and counterclockwise directions to thereby cause a change in the relative speeds and directions of rotation of the left and right traction elements.

The present invention relates to a mobile device comprising a deformation mechanism that changes a relative disposition relationship between a plurality of wheels and a control unit that selects a movement path based on a deformation amount of the deformation mechanism. More specifically, the plurality of wheels include a first wheel and a second wheel, and the deformation mechanism changes the disposition relationship between the first wheel and the second wheel in a twist direction.

The invention belongs to the field of article carrying, and particularly relates to a self-adaptive terrain load moving vehicle based on multi-mode AI navigation, which comprises a crawler-type chassis driving mechanism, a lock catch arranged on the outer side wall of a chassis main body, crawler main bodies arranged on the two sides of the chassis main body, a plurality of groups of gears arranged in the crawler main bodies, and a plurality of groups of driving mechanisms arranged on the crawler main bodies, through organic combination of infrared following, pattern recognition and the SLAM technology, full-autonomous path planning and dynamic obstacle avoidance of the load moving vehicle are achieved, manual intervention is completely eliminated, the automation level and efficiency of operation are greatly improved, and the load moving vehicle is suitable for complex and changeable operation environments. The terrain sensing system composed of the crawler chassis and the pressure sensor array is matched with the AI terrain surveying and mapping technology, complex terrains such as slopes, pits and non-hardened grounds can be accurately recognized and adapted, the space and terrain limitation of traditional weight moving equipment is effectively broken through, and the operation range is widened.

The invention provides a differential control method for a crawler wheel of a remote control stretcher crawler, and belongs to the technical field of the stretcher crawler. Vehicle body posture information is collected in real time through a gyroscope sensor and an accelerometer sensor, and a crawler wheel differential kinematics model is established to accurately calculate a target rotating speed; a PID control algorithm is adopted to construct a closed-loop speed controller, a double-layer game optimization model is applied to coordinate power consumption and action stability, a rotating speed adjusting sequence is optimized through a shortest path algorithm, the rotating speed of each driving wheel is monitored in real time, the driving current of a motor is dynamically adjusted, and a continuously-circulating closed-loop control system is formed. The vehicle body shaking and stretcher inclination in the steering process are effectively restrained, the stability control capacity of the system is remarkably improved, and the technical problem that in the prior art, a remote control stretcher crawler is insufficient in stability in the complex terrain steering process is solved.

The invention discloses a tire rotating speed control method, system and equipment of an electric boom and a medium, and belongs to the technical field of engineering machinery. The electric arm vehicle comprises a steering structure, a plurality of tires and a plurality of walking motors, the steering structure comprises a left steering seat, a right steering seat, a steering axle and a steering pull rod, the tires correspond to the walking motors one to one, and the tire rotating speed control method of the electric arm vehicle comprises the steps that the current steering angle of the electric arm vehicle is determined; generating motor rotating speed control information according to the relation between the current steering angle and the motor rotating speed; and controlling the walking motor to drive the tire to rotate according to the motor rotating speed control information. The tire rotating speed of the electric boom can be reasonably controlled, and the safety risk is reduced.

A drivetrain assembly of a power machine can include a motor sub-assembly. The motor sub-assembly can include a bearing carrier, a reduction assembly, and an electric motor. The bearing carrier can be configured to be fixedly attached at an outboard side to a first lateral side of a frame of the power machine to operably transmit rotational power to at least one tractive element of the power machine. An outboard side of the reduction assembly can be fixedly attached to an inboard side of the bearing carrier. An inboard side of the electric motor can be fixedly attached to the outboard side of the reduction assembly and the electric motor can be configured to operably transmit the rotational power to the bearing carrier via the reduction assembly. At least part of the electric motor can laterally overlap with the bearing carrier.

The invention discloses a steering control method, device and system and a vehicle, relates to the technical field of vehicle control, and aims to realize small-radius steering of the vehicle. The method comprises the steps that after it is determined that the vehicle enters a low-speed steering scene according to the vehicle speed and the steering wheel rotating angle of the vehicle, at least one shaft of the vehicle is controlled to output first differential torque, an outer wheel of the at least one shaft outputs positive torque, and an inner wheel of the at least one shaft outputs negative torque according to the steering wheel rotating angle and steering wheel hand force of the vehicle; the difference between the negative torque and the positive torque is equal to the first differential torque. When the vehicle enters the low-speed steering scene, at least one shaft of the vehicle is automatically controlled to output the differential torque, small-radius steering and even in-situ turning of the vehicle can be achieved, and the turning angle of the vehicle is effectively reduced. In addition, the steering wheel angle and the steering wheel hand power are parameters related to the steering intention of the driver, the vehicle is controlled to achieve differential steering based on the parameters, the actual steering of the vehicle can meet the subjective requirement of the driver, and the steering experience of the driver is improved.

A car body structure includes a bottom plate, a side plate assembly, and a support rod assembly. The side plate assembly includes a first side plate and a second side plate opposite to the first side plate. The first side plate and the second plate are connected to the bottom plate and located on a same side of the bottom plate. An edge of the first side plate facing away from the bottom plate defines at least two first slots, and an edge of the second side plate facing away from the bottom plate defines at least two second slots. The support rod assembly includes at least two support rods, each support rod is snap-engaged with one first slot and one second slot. A surface of the support rod assembly facing away from the bottom plate is a bearing surface. A driving unit is also disclosed.

The utility model belongs to the technical field of vehicle equipment, and particularly relates to an improved remote control type multi-terrain transport vehicle which comprises a carriage body, a wheel carrier box and a transmission shaft, two walking wheels are installed on the outer side of the wheel carrier box, a chain wheel transmission mechanism is arranged in the wheel carrier box, and a connecting cylinder is arranged in the middle of the outer wall of the side, facing the carriage body, of the wheel carrier box. Limiting devices are arranged on the front portion and the rear portion of the wheel carrier box, the center of the connecting cylinder is parallel to a walking wheel rotating shaft, the connecting cylinder is rotatably installed on the carriage body, the transmission shaft is rotatably installed in the connecting cylinder, the chain wheel transmission mechanism comprises a driving gear and two driven gears, the driving wheel is connected with the output end of the transmission shaft, and the two driven gears are connected with the chain wheel. The driven gears are arranged in front of and behind the driving gear respectively, and the two walking wheels are connected with rotating shafts of the two driven gears respectively. The amplitude of the transmission mechanism is reduced, the strength of the transmission mechanism is improved, and the multi-terrain transport vehicle has the advantages of being simple in structure and reliable in work.

The invention provides an intelligent crawler-type combine harvester walking device, and belongs to the field of harvesters, the intelligent crawler-type combine harvester walking device comprises a frame, a harvester and an engine are both fixedly installed on the upper portion of the frame, the frame is provided with a transmission gear box, the engine is in transmission connection with the transmission gear box, and the transmission gear box is connected with the harvester. The walking assembly comprises a track shoe, a driving roller, a follow-up roller, a transverse telescopic frame, a longitudinal telescopic frame, a wheel shaft, wheels and a transverse pushing gear. In the whole switching and operation process, the walking device is stably supported through the wheels, it is always ensured that the track shoe does not make direct contact with the hardened road surface, structural damage such as scratches and indentations caused by a metal track chain to the road surface is reduced fundamentally, the abrasion rate of the metal track and the rubber track can be remarkably reduced, the service life of the tracks is effectively prolonged, and the service life of the track is prolonged. And meanwhile, the accessory replacement and maintenance cost of equipment operation and maintenance is reduced.

The invention relates to the technical field of yardage roll carrying devices, and discloses an AGV (automatic guided vehicle) for carrying yardage rolls, which comprises a carriage, hydraulic rods are mounted at the upper ends of the two sides of the carriage, clamping sleeves are arranged at the lower ends of the hydraulic rods, crawler wheels are mounted in the clamping sleeves, and limiting columns are fixedly connected to the middle of the upper end of the carriage. The limiting column is sleeved with a movable sleeve, a motor is installed on one side of the movable sleeve, an auxiliary platform is fixedly connected to the upper portion of the movable sleeve, and a hinge is fixedly connected to one side of the upper portion of the auxiliary platform. According to the AGV for carrying the yardage rolls, by designing a specific running track, convenience is improved when the carriage runs, meanwhile, motors move through gear meshing, an auxiliary platform can be driven to rotate around the upper portion of the carriage, and when the feeding direction of the to-be-carried yardage rolls is opposite to the discharging direction of the to-be-carried yardage rolls, the auxiliary platform can be driven to rotate by starting the motors; therefore, the placing direction of the cloth roll to be carried can be adjusted.

A zero turning radius mower park brake system 100 includes a pair of steering levers (101, fig 1) attached to steering arm brackets 102 that are pivotable forward and reverse on a first axis 112 for r

[Problem] To provide a vehicle power transmission unit capable of moving a vehicle with a small power when a power supply of a system is off and capable of braking the vehicle by a brake system regardless of whether a clutch is engaged or disengaged. [Solution] A power transmission unit includes an input shaft, a gear mechanism, and an axle. Power from a power source is transmitted from a rotational shaft of the power source to the axle via the input shaft and a gear mechanism. The rotational shaft and the input shaft are arranged such that axes thereof match each other. The power transmission unit further includes: a clutch provided between the rotational shaft and the input shaft and manually operated to switch engagement and disengagement between the rotational shaft and the input shaft; a brake mechanism including a brake rotor provided not to rotate relative to the input shaft.

According to the differential wheel limiting detection device and method, the rotating direction and the rotating speed of a wheel set can be limited in advance before the differential wheel moves in two directions and collides with a hard limit, so that the control performance of a vehicle is improved, the situation that an oil cylinder and the like fall off due to collision with the hard limit when the speed is high is avoided, and the problem that a traditional differential wheel set is poor in safety is solved. The system has the advantages of quick response, high safety, simple structure and the like, and is suitable for differential wheel control systems of equipment such as AGVs (Automatic Guided Vehicles) and mobile robots.