256results about How to "Improve off-road performance" patented technology

A multifunctional operation type underwater robot comprises a picking device, driving devices, camera shooting and illumination devices, floating devices, a walking device and a shell. The picking device is arranged on the top of the shell. The four corners and the tail of the shell are provided with the driving devices. The floating devices are distributed at the four corners and the two sides of the shell. The camera shooting and illumination devices are fixed to the picking device and the shell. The walking device is arranged at the lower portion of the shell. The underwater robot has the function of accurate seabed positioning, has the advantages of facilitating fishing and being large in range, meanwhile, can dynamically adjust buoyancy and is strong in cross-country capacity.

The invention discloses an air-ground amphibious task set. The task set consists of a ground unmanned mobile platform, and a plurality of flying robots; and the ground unmanned mobile platform is combined with and separated from the flying robots through an automatic release mechanism on the ground unmanned mobile platform. During task execution, the flying robots are fixedly connected with the ground unmanned mobile platform through the automatic release mechanism, and a control operator remotely controls the mobile platform through wireless communication, and guides the whole task set to a task area according to a global positioning system (GSP) position signal on the mobile platform and the returned image signal. After the task set arrives in a task area, the control operator sends a flying command to the mobile platform; and after the automatic release mechanism is opened, the mobile platform sends a take-off command to the flying robots, and the flying robots take off immediately and execute the task. The flying robots return a pose signal and detection information to the unmanned mobile platform in real time. The mobile platform adjusts the flying robots according to the pose signal of the flying robots and returns the detection information of the flying robots to a control center. Through coordination of members of the set, the tasks of battlefield detection, resource exploration, disaster relief and the like are executed.

The invention relates to a fire-fighting robot, with explosion resistance. Wherein, it is formed by movable carrier, frame, sensor, positive pressure explosion-proof device, explosion-proof element, and wireless data transmitter; the wireless data transmitter is formed by carrier device and background instructor; the sensor is at the main body formed by movable carrier and frame, to combine the positive pressure explosion-proof device. The invention can replace worker to enter into dangerous area, and it can uses wireless data transmitter to transmit and process data on site.

The invention discloses a rocking arm rhombus four wheels moon vehicle shift system, including a rotary rhombus frame and a front, a rear ,a left and a right wheels with an independent drive system mounted on the frame, the front and the rear wheels are independently fixed on the frame via a front hanger system and a rear hanger system, and the left and the right wheels are independently fixed on the frame via a left hanger system and a right hanger system. The front hanger system and the rear hanger system all consists of a connection mechanism and a steering mechanism. The invent uses a novel type of four wheels three axial rhombus chassis with the advantages of compact structure, high lightness degree, low energy consumption ,big load capacity, good cross country characteristics, convenient posture adjustment, strong land suitability , smooth vehicle body posture and high reliability.

The invention relates to an improved structure of a step-and-track-composite-type movable robot travelling system. According to the improved structure of the step-and-track-composite-type movable robot travelling system, a balance rocker arm hanger bracket of which the two sides are symmetrical is configured on an H-shaped chassis, and a work platform is placed at three fixing points of the balance rocker arm hanger bracket; a driving steering assembly driven by a linear travelling driving motor (54) and a steering travelling driving motor (76) is configured on the balance rocker arm hanger bracket and located on an H-shaped chassis outer bridge shell cross rod, and four supporting legs of the balance rocker arm hanger bracket are configured with joint track assemblies capable of achievingposture adjustment. According to the improved structure of the step-and-track-composite-type movable robot travelling system, the adaptability to a complex annular road surface is very high, and theflexible posture regulation and stable posture keeping capacity is achieved; the attaching profile modeling capacity of uneven complex ground automatic adaption is achieved, and disturbance of the uneven road surface on a vehicle is reduced; the weight loading capacity of the movable work platform is improved, and the stairway-climbing and obstacle crossing capacity is achieved; and through the four-wheel-driving mode, the vehicle cross-country capacity is improved, spot turn can be achieved, and the maneuverability is high.

The invention provides a dangerous chemical leakage accident emergency monitoring mobile robot. The dangerous chemical leakage accident emergency monitoring mobile robot is used for replacing a rescue person to enter a dangerous explosive or poisonous gas environment to detect the environment information of the dangerous chemical leakage accident site, so as to provide the information reference for preparing a rescue plan, and provide proof for the investigation and analysis of accident causes. The dangerous chemical leakage accident emergency monitoring mobile robot comprises a chassis (1), an emergency monitoring module (2), an image collecting module (3), a power source module (4), a wireless communication module (5), and a remote management system (6). The dangerous chemical leakage accident emergency monitoring mobile robot has the advantages that an intrinsically safe monitor for monitoring the dangerous chemical leakage accident is arranged, so the repeated utilization property is realized, and the application range is wide; by adopting a rectangular explosion isolation casing, the internal explosion can be borne, the damage is avoided, and the explosion of the outside environment cannot be caused; by adopting a crawler type movement mechanism, the off-road capability is high, and the mobile robot can enter one or multiple of non-structural environments, such as buildings, streets, fields, automobile bottoms, railways, wastelands, grasslands and conferences.

The invention relates to a vehicle for the disabled, particularly to an off-road stair-climbing wheelchair capable of realizing wheel and track switching and being driven independently. The off-road stair-climbing wheelchair capable of realizing wheel and track switching comprises a seat mechanism, a seat balancing mechanism, a frame, a four-wheel driven traveling mechanism, a lifting mechanism, a track traveling mechanism, a universal wheel traveling mechanism and the like which are connected with one another. The wheelchair mainly comprises two traveling mechanisms, namely, the track traveling mechanism and the four-wheel driven traveling mechanism, mutual switching usage is realized through the lifting mechanism between the two traveling mechanisms, the wheelchair can go up and down stairs, run on flat grounds, sand beaches and snowfields, climb slopes, cross countries and cross ditches and steps as well as be conveniently and automatically switched to the universal wheel traveling mechanism mode for traveling on a flat and smooth rod surface. The purpose that the disabled and the aged who are difficult in walking can have one off-road stair-climbing wheelchair which is complete in function, mature in technology and capable of being driven independently is achieved actually.

The invention relates to the technical field of methods for intelligently controlling robots, and discloses a method for tracking trajectories of tracked robots. The method includes steps of establishing initial kinematical equations of the tracked robots; setting switching functions and computing control functions on the basis of conventional approaching laws; replacing constant gain by exponential gain on the basis of the switching functions, and computing sliding-mode control laws on the basis of exponential approaching laws; establishing initial control function matrixes of the tracked robots for each group of input data and each group of output data by the aid of the sliding-mode control laws on the basis of the exponential approaching laws; adjusting the directions of the tracked robots into tangential directions along the movement trajectories; computing control function matrixes of the tracked robots by the aid of the sliding-mode control laws on the basis of the exponential approaching laws. The method has the advantages that the trajectories of the robots can be intelligently controlled according to path planning, accordingly, the operational difficulty can be relieved for drivers, and the cross-country capacity of the tracked robots in complex terrains can be improved.

This pneumatic tire (1) is provided with a plurality of circumferential main grooves (21, 22) extending in a tire circumferential direction, a plurality of land portions (31 to 33) defined by these circumferential main grooves (21, 22), and a plurality of lug grooves (41 to 43) disposed in these land portions (31 to 33). Additionally, at least one column of land portion (32) in a tread portion center region is provided with a plurality of blocks divided in the tire circumferential direction by the plurality of lug grooves (42) and a three-dimensional sipe (52) that extends over an entire circumference of the tire and divides the land portion (42) in a tire width direction.

The invention relates to a mining dump truck which is mainly suitable for large surface mining transportation. A running gear of the mining dump truck comprises a truck frame and a plurality of hydraulic suspensions; every two hydraulic suspensions form a shaft line; the running gear at least comprises two shaft lines; the truck frame is an intermediate box beam structure; wing beams are extendedfrom the two sides of the intermediate box beam; each hydraulic suspension comprises a rotary bearing, a rotary frame, a swinging arm, a suspension cylinder, an oscillating shaft and wheels; wherein the upper end of the rotary frame is arranged on the lower plane of each wing beam of the truck frame by the rotary bearing; the upper end of the rotary frame is movably connected with the swinging arm by pins; one end of the suspension cylinder is hinged at the lower part of the rotary frame; the other end of the suspension cylinder is hinged at the middle part of the swinging arm; the front end of the swinging arm is a cylindrical pin shaft; the oscillating shaft is sleeved on the cylindrical pin at the front end of the swinging arm; and the wheels are arranged at the two ends of the oscillating shaft. According to the mining dump truck, the safety of the mining dump truck is improved, the minimal turning radius of a vehicle is also reduced at the same time, the throughput capacity, the maneuverability and the off-road performance of the mining truck are improved, and the cost of use and maintenance is reduced.

A pneumatic tire has a shoulder land portion including a tread edge and a plurality of lateral grooves which are open to an outer wall of the shoulder land portion in a tread surface. One end in a tire circumferential direction of the outer wall is positioned on an inner side in a tire width direction with respect to another end between the lateral grooves which are adjacent to each other. A vacancy communicating with the lateral groove from the one end of the outer wall is formed so as to face the outer wall. A pawl portion protruding in the tire circumferential direction is provided in a wall surface of the lateral groove which is close to the other end of the outer wall. A height of the pawl portion from a bottom of the lateral groove is gradually decreased toward a leading end.

Disclosed is a road surface self-adapting rhombus lunar rover moving system, which comprises a rotational lunar rover frame, a front wheel, a rear wheel, a left wheel and a right wheel, wherein the front wheel, the rear wheel, the left wheel and the right wheel are installed on the lunar rover frame and are in rhombus arrangement. The front wheel and the rear wheel are respectively fixed on the lunar rover frame via a front suspension system and a rear suspension system, the left wheel and the right wheel are respectively fixed on the lunar rover frame via a left suspension system and a right suspension system, the lunar rover frame comprises a front lunar rover frame and a rear lunar rover frame, the left suspension system is fixed on a left hinge joint shaft, the right suspension system is fixed on a right hinge joint shaft, the left hinge joint shaft is fixedly connected with the rear lunar rover frame via a connecting base, a motor is fixedly installed at the end of the left hinge joint shaft, the output shaft of the motor is fixedly connected with the right hinge joint shaft, a hinge joint bearing base is fixed on the front lunar rover frame, the left hinge joint shaft and the right hinge joint shaft are in hinge joint with the front lunar rover frame via the hinge joint bearing base with bearings. The lunar rover moving system utilizes a novel structure of a rhombus chassis with four wheels and three shafts, which is compact in structure, high in light weight degree, convenient in posture adjusting, fine in off-road performance, strong in terrain adaptive capacity and high in reliability.

A light electrically-driven unmanned ground platform adopts a hybrid electrically-driven structure and an articulated-type independent hinged suspension system, wherein the articulated-type independent hinged suspension system comprises a swing arm mechanism and drive wheels; each drive wheel adopts a hub traction motor for driving and a hub traction motor controller for controlling; each swing arm adopts an independent swing arm DC motor and a swing arm motor controller for controlling. The light electrically-driven unmanned ground platform can adopt multiple drive modes and can move in 6*6, 6*4 or 6*2 drive mode according to different road conditions. The light electrically-driven unmanned ground platform is provided with the special swing arm mechanism, the ground clearance of the chassis of the light electrically-driven unmanned ground platform is increased, and the off-road capability is enhanced. Through control over the swing arm DC motors and a stepper motor, the pose of the light electrically-driven unmanned ground platform can be adjusted within a certain range and the swing arms can be rotated by 0-360 degrees.

The invention relates to an engineering forklift truck comprising a truck frame, an operator cabin in which an operating mechanism is arranged, a front driving axle, a rear driving axle, an engine, a torque converter, a variable speed case, door frame working mechanisms and balancing weights, wherein the door frame working mechanisms and the balancing weights are respectively arranged on the front end parts and the rear end parts of the truck frame. The engineering forklift truck is characterized in that the truck frame comprises a front truck frame and a rear truck frame, and the front truck frame and the rear truck frame are hinged together by pin shafts; a steering oil cylinder is installed between the front truck frame and the rear truck frame; the operator cabin is installed on the rear truck frame and generally positioned at the middle part of the entire truck; the engine, the torque converter and the variable speed case are installed on the rear truck frame, the engine is in transmission connection with the variable speed case by the torque converter, and a front transmission shaft and a rear transmission shaft of the variable speed case are correspondingly connected with the front driving axle and the rear driving axle by shaft couplings. The truck frame of the forklift truck adopts the mutually hinged front truck frame and the rear truck frame, uses the hinge steering to replace the rear wheel steering of the forklift truck and utilizes the two common driving axles of low cost to realize four-wheel driving, thereby enhancing the off-road performance of the forklift truck under adverse operating environment and being more adapted to the field operation of loading and unloading.

The invention provides a pneumatic tire for evenly improving endurance quality, off-road performance and cut resistance of a tire bead part. The pneumatic tire comprises a sidewall portion provided in its radially outer region B with side protectors protruding axially outwardly from the outer surface Ba of the radially outer region B. The side protectors are arranged in the tire circumferential direction at intervals so that grooved portions are formed between the side protectors. The width W1 in the tire circumferential direction of the grooved portion is in a range of from 50% to 70% of the width W2 in the tire circumferential direction of the side protector when measured at the same radial position.

The invention relates to a six-wheeled independent drive chassis system for an unmanned vehicle. The chassis system comprises a frame, suspension systems, transmission devices and motor speed reducer assemblies, and is characterized in that: the frame comprises two longitudinal beam parts which are eudipleural, and three transverse beam modules which are parallelly arranged back and forth; the three transverse beam modules are fixedly connected between the two longitudinal beam parts; six groups of suspension systems are connected to the longitudinal beam parts of the frame; each group of suspension system comprises a suspension system, a braking system and a driving system; six groups of transmission devices are arranged on the suspension systems; and six groups of motor speed reducer assemblies are fixedly arranged on the three transverse beam modules of the frame in pairs, and are connected with and drive the driving systems of the suspension systems through the transmission devices. The chassis system is high in modular degree, has the advantages of simple structure and high shock absorption property, is convenient to assemble, disassemble and maintain, can be applied to the unmanned vehicle and can be used as the chassis structures of other electric automobiles.

The invention relates to a saloon car tyre surface and specially, relates to patterns of the saloon car tyre surface. The saloon car tyre surface comprises a centre pattern block, side pattern blocks and shoulder pattern blocks. The side pattern blocks and the shoulder pattern blocks are orderly and regularly arranged at left and right sides of the centre pattern block from inside to outside. The saloon car tyre surface is divided into left and right symmetrical parts by the centre pattern block. The centre pattern block is a vertical one-piece pattern block and is located in the center of the saloon car tyre surface. The centre pattern block is separated from the side pattern blocks through main vertical circle pattern channels located between the centre pattern block and the side pattern blocks. The side pattern blocks are separated from the shoulder pattern blocks through auxiliary vertical circle pattern channels located between the side pattern blocks and the shoulder pattern blocks. Adjacent two of the side pattern blocks are separated through an inclined side pattern channel and two ends of the inclined side pattern channel are respectively communicated with the main vertical circle pattern channel and the auxiliary vertical circle pattern channel. Adjacent two of the shoulder pattern blocks are separated through a shoulder pattern channel and the shoulder pattern channel is communicated with the auxiliary vertical circle pattern channel. The patterns of the saloon car tyre surface are mixed patterns and thus the saloon car tyre surface can produce an enough braking force and has good control performances and a beautiful appearance.

This pneumatic tire is provided with: a circumferential main groove (22) extending in a tire circumferential direction, a shoulder land portion (33) defined by the circumferential main groove (22), and a plurality of lug grooves (43) disposed in the shoulder land portion (33). Additionally, the shoulder land portion (33) is provided with a dimple (6) for mud discharge that is disposed between lug grooves (43, 43) adjacent in the tire circumferential direction and extends in a tire width direction without communicating to a lug groove (43). Additionally, a distance Dd between an end portion of the dimple (6) on a tire-width-direction inner side and a tire ground contact edge (T) is in a range of −10 mm≦Dd≦10 mm.

The invention belongs to the technical field of specific vehicle chassis, and particularly relates to a low independent suspension of a specific vehicle chassis. The suspension is formed by connecting two or more sets of independent suspension subunits in series through pipelines. Each independent suspension subunit comprises an upper cross arm, a lower cross arm, a hydro-pneumatic spring A, a limiting block and a steering knuckle, wherein one end of an upper supporting lug of the hydro-pneumatic spring A is connected with a frame, one end of a lower supporting lug of the hydro-pneumatic spring A is connected with the lower cross arm, the upper cross arm is connected with the frame and the steering knuckle, the lower cross arm is connected with the frame and the steering knuckle, and the limiting block is connected with the frame and located above the upper cross arm. By the adoption of the low independent suspension of the special vehicle chassis, the requirements of a new generation cross-country military vehicle for high maneuverability and high cross-country ability can be met, and handling stability and driving safety of the vehicle are improved.

The invention relates to a propelling type flying car with spiral wings. The propelling type flying car has the advantages that due to an unique design of the structures and the connection relation of an independent multi-stage type spiral propelling device, wheel transmission systems, wheel steering control systems, image shooting devices, a radar detection and induction device, a signal receiving and transmitting device and a remote communication control system in the propelling type flying car with the spiral wings, the technical difficulties of large control errors, unstable flying and the like caused by only adoption of fixed wings, need of fixed tracks, low spiral propelling power and accuracy and inaccurate flying-image acquisition due to large spiral wings in the prior art are overcome; the vertical-rising flying car with the propelling type structure of the spiral wings, which is small in volume, high in practicability, strong in spiral propelling power and high in accuracy and is remotely controlled, is realized.

The invention relates to the technical field of control over a driving and braking system of an all-wheel driving cross-country car, in particular to an antiskid system of a car and a control method of the antiskid system. When the speed is lower than a set value, if the slippage rate of a wheel at any side reaches the control threshold value of a driving antiskid control system, the driving antiskid control system and a limited slip differential operate simultaneously; and if the slippage rates of the wheels on the two sides are both smaller than the control threshold value of the driving antiskid control system, the limited slip differential operates while the driving antiskid control system does not operate. When the speed is higher than the set value, if the slippage rate of the wheel at any side reaches the control threshold value of the driving antiskid control system, the driving antiskid control system and the limited slip differential operate simultaneously; and if the slippage rates of the wheels on the two sides are both smaller than the control threshold value of the driving antiskid control system, the limited slip differential operates while the driving antiskid control system does not operate. Through the combined operation of the limited slip differential and the driving antiskid control system, the utilization rate of engine torque is increased, the driving power of the whole vehicle is utilized to the greatest extent, and the cross-country capacity of the whole vehicle is improved.

The invention discloses a multifunctional scout car which comprises a communication system and a scout and rescue device. The communication system comprises a vehicle-mounted satellite antenna, a TD-LTE module, a microwave image transmission device and an unmanned scout aerial vehicle. The scout and rescue device is arranged in a compartment. The multifunctional scout car has the advantages that the quick reaction capacity of fire-fighting troops is improved, a 4*4 military vehicle chassis is adopted, the multifunctional scout car has waterproof, explosion-proof and backflow-preventing functions to a certain degree and has high maneuverability and cross-country ability at the same time, communication equipment and fire-fighting devices are modularly arranged, and quick reaction, quick mounting and dismounting and quick usage are ensured; the earlier scout and rescue ability of the fire-fighting troops is improved; the rescue and decision-making level of the fire-fighting troops is improved; the vehicle-mounted satellite antenna is convenient to mount and dismount, firm in fixing, capable of saving energy and protecting environment; the service life of the top of the compartment and the vehicle-mounted satellite antenna is prolonged.

The invention discloses an active swing arm type variable diamond four-wheel lunar rover moving system. The system comprises a diamond like vehicle frame, a front wheel, a rear wheel, a left wheel and a right wheel with an independent driving system positioned on the vehicle frame. The front wheel and the rear wheel are fixedly positioned on the vehicle frame via a front suspension system and a rear suspension system. The left wheel and the right wheel are fixedly positioned on the vehicle frame via the left suspension system and the right suspension system. The front suspension system and the rear suspension system comprise a swing arm type power mechanism and a steering mechanism. The front wheel and the rear wheel change direction in linkage. The left suspension system and the right suspension system comprise a swing arm type power mechanism. Adopting the structure of the four-wheel three-axis diamond chassis and the active swing arm, the invention initially plays the high-efficient mobility of wheel type driving mode and the crawling ability of foot type moving system, and the invention relates to the active swing arm type variable diamond four-wheel lunar rover moving system with simple and compact structure, low cost, being suitable for operation under various severs environments, wide application, good stability, high reliability and strong flexibility of steering.

The invention relates to an electronic control differential mechanism in vector linkage with a multi-wheel vehicle steering control mechanism. The electronic control differential mechanism is built onthe basis that a multistage universal steering control mechanism obtains a key operating point bearing and makes steering shaft swing arms become vector control arms; the lengths of the vector control arms are in direct proportion to corresponding wheel speeds; the motor voltage is in direct proportion to the angular speed; a main shaft motor or quadrangle speed measurement motor combination uniformly supplies electricity to an alternating-current transformer or slide potentiometer input end, corresponding to the steering vector control arm length synchronous connection control output end slide pole shoe position, the output target voltage and voltage generated by speed measurement motors installed on all wheel drive haft shafts are compared through a double branch voltage balance comparison servo circuit assembly, generated voltage unbalance diode electric signals feed back a servo device controlling one of six electronically controlled differential or speed regulating modes selectedby all axial directions, and the drive half shaft angular speed is increased or decreased to reach the voltage balance state.

The present invention relates to automobile and is one kind of electrically controlled automobile suspension. The present invention has the technological scheme comprising mounting hydraulic cylinder onto the mechanical damper and utilizing the damper as the piston rod of the hydraulic cylinder; adopting pulse width modulated digital solenoid valve as electronic controller and mounting sensors on to automobile body; and adopting electromagnetic clutch for the control of the middle pressure pump. The said technological measures result in hydraulic cylinder stroke change adaptive to complicated road case, greatly increased automobile body height regulating capacity, constant running level maintained, unchanged geometrical relation of automobile suspension, improved running performance, and other advantages.

The invention provides a military investigation and attack integrated robot which comprises first pins, second pins, third pins, installation side boards, sliding frames, fifth pins and the like. The military investigation and attack integrated robot is characterized in that each first pin, the corresponding second pin and the corresponding third pin are sequentially fixed to the corresponding installation side board from left to right; each sliding frame is fixed to the right side of the corresponding installation side board; and each fifth pin is arranged at the end of the corresponding sliding frame. A four-wheel drive structure is adopted, a high-performance damping structure is arranged, and therefore the robot has the high field crossing capacity.

The present invention provides a cable erection traction robot, comprising drive feet, an electric control device, cranks, a driving gear, a driven gear, a cable fixing frame, a first hydraulic motor, a first hydraulic cylinder and the like. Each drive foot is of a cuboid structure, the side faces of the drive feet are provided two crank installation round holes, and the front ends of the drive feet are provided with guide plates bent upwards. According to the invention, the two drive feet which can rotate independently are adopted to drive the robot, the acting force between the robot and the ground can be increased through pawls at the bottoms of the drive feet, and the cross country traveling ability of the robot is improved.

The invention relates the technical field of a self-propelled aerial work platform and discloses a telescopic arm crawler type aerial work platform comprising a arm crawler type crane, a platform coupling device and an aerial work platform device. The telescopic arm crawler type crane is formed by a telescopic arm crawler type crane body and a telescopic arm type suspension arm arranged on the telescopic arm crawler type crane body; and the aerial work platform device is connected with a head part of the telescopic arm type suspension arm via the platform coupling device. Features of the telescopic arm crawler type crane and the aerial work platform are combined in the telescopic arm crawler type aerial work platform, so multifunction in one machine is truly achieved; two functions are independent to each other and separately controlled; all functions of the telescopic arm crawler type crane and the aerial work platform can be realized; and stability, work performance and cross-road performance of the telescopic arm crawler type aerial work platform are greater than other aerial work platform products.