3407results about How to "Improve passability" patented technology

The invention provides a double-motor skidproof differential drive axle used in electric automobiles, which comprises two driving motors, a speed reducer and an output axle which is connected with theThe invention provides a double-motor skidproof differential drive axle used in electric automobiles, which comprises two driving motors, a speed reducer and an output axle which is connected with the speed reducer. The two driving motors are arranged face to face in the middle of the driving axle and connected into a whole through the shell of the speed reducer. The power output by the two drivinspeed reducer. The two driving motors are arranged face to face in the middle of the driving axle and connected into a whole through the shell of the speed reducer. The power output by the two driving motors converges together and flows into the speed reducer; and then the power further drives the left and the right wheels of the electric automobile to rotate through the output axle which is conng motors converges together and flows into the speed reducer; and then the power further drives the left and the right wheels of the electric automobile to rotate through the output axle which is connected with the speed reducer. The driving motors and the speed reducer can be arranged in an engine chamber to achieve compact structure and save space. Simultaneously, in order to solve the problem oected with the speed reducer. The driving motors and the speed reducer can be arranged in an engine chamber to achieve compact structure and save space. Simultaneously, in order to solve the problem of skidding, a skidproof differential device is also arranged in the speed reducer.f skidding, a skidproof differential device is also arranged in the speed reducer.

The present invention relates to metal carrier for automobile tail gas purifier catalyst and its preparation process, and solves the technological problem in providing metal carrier with simple formation process and low production cost. The metal carrier features its 3D netted structure with skeleton of metal nickel or nickel coated copper, and has porosity of 30-98 %, pore number of 20-60 PPI and pore size of 0.5-3 mm. The preparation process includes the following steps: treating foamed polyurethane or polyether plastic via chemical plating or vacuum vapor depositing to coat carbon-base conducting material; electrically depositing matrix metal of nickel or copper coated nickel; and burning out foamed plastic base in a pyrolysis oven. The metal carrier is mainly used as carrier for automobile tail gas purifier catalyst.

The invention relates to a diameter-variable tube washing robot with parallel four-rod device, wherein it is formed by several same tube washing devices, that connected by flexible springs; each unit is formed by support, flexible panel and washing head; the support is formed by several parallel four-rod devices around the central axle; via torsion spring, the parallel four-rod device will open, and the rolling wheel on the swing rod will contact the inner wall of tube, to support the whole tube washing device; when meeting obstacle, the four-rod device will overcome torsion spring to contract; the washing head is mounted on the connecting rod of four-rod device, to contact the inner wall of tube via spring; the flexible panel on the back swing rod can block the inner fluid, to generate pushing force, and move the support forwards. The invention can avoid additive powder and clean any tubes.

The present invention discloses three-dimensional ordered macroporous alumina and a preparation method thereof. The three-dimensional ordered macroporous alumina has a macropore diameter of 50-1000 nm, a particle size of 1-50 mm, and a mechanical strength of 80-280 g/mm. The method comprises the following steps: adding a saccharide compound and concentrated sulfuric acid to a monodisperse polymer microsphere emulsion to obtain a modified polymer microsphere colloid crystal template; filling an alumina sol; and then carrying out aging and calcination to obtain the three-dimensional ordered macroporous alumina. With the method of the present invention, an adhesion amount of the alumina precursor can be substantially improved, a mechanical strength of the material is enhanced, and the macroporous material is not easily broken into fine powder when high temperature calcination is performed to remove the template so as to maintain high integrity.

Active noise reduction headphones for audiometry where the earphone portion of said headphones has a cavity volume greater than 6 cc and including an acoustic-electric sensing means and an electro-acoustic transducing means which are used cooperatively and which has additional passive noise control means in the form of a circumaural seal around the ear for improving high frequency noise control performance, the headphone having a summing junction for combining the active noise reduction signal and an audiometry test signal.

The invention relates to a motor coach unitary body of a large rectangular pipe under frame, which comprises the under frame, an upper part body frame connected with the under frame and a coping, and a floor bracket arranged on the under frame; wherein, the under frame consists of a front overhang, a front axle, a front wheel casing, a middle section, a rear axle, a rear wheel casing and a rear overhang which are sequentially connected with each other; the upper part body frame comprises a front and a rear circles as well as a left side and a right side circles; the under frame is connected with the front and the rear circles as well as the left side and the right side circles of bodywork and the coping by connecting points to form a whole carrying framework, so that a plurality of closed stress ring structures are formed. The invention has the characteristics of strong collision-resistant and side rollover resistant capability, low cost, light weight, high adaptability, good safety, etc.

The invention belongs to the technical field of traffic, and provides a motor vehicle traffic control system which is mainly applied to a plane crossroad. The motor vehicle traffic control system is characterized in that a prepositioned stop line and a prepositioned signal lamp are additionally arranged before an existing crossroad stop line and an existing crossroad signal lamp. With linkage control of the prepositioned signal lamp and the crossroad signal lamp by a signal controlling machine, a crossroad green wave band is generated around the periphery of the crossroad so that passing capability of motor vehicles at the crossroad is enhanced.

The invention discloses a return flow scavenging type hydraulic free piston diesel engine, which comprises a single-cylinder two-stroke diesel engine without a crankshaft connecting rod and a valve distribution mechanism, and a hydraulic system provided with a linear hydraulic pump and a hydraulic motor, wherein a piston in the single-cylinder two-stroke diesel engine is connected with a plunger in the hydraulic system, and a space in the linear hydraulic pump in the hydraulic system is divided into a high-pressure cavity and a low-pressure cavity; the piston in the single-cylinder two-stroke diesel engine can drive the linear hydraulic pump to output high-pressure oil in an expansion travel, and the high-pressure oil is output to the hydraulic motor from a pipe joint C; the piston is pushed back to an upper dead center from a lower dead center by the low-pressure oil end, so that a compression travel of the piston is completed. According to the invention, a crankshaft in the conventional internal combustion engine is omitted, and a middle conversion step of power output is reduced, so that the heat efficiency is about 5% higher than that of the conventional internal combustion engine, the diesel engine can be operated at a variable compression ratio, the best heat efficiency of a full operation work condition is ensured, and the fuel economy is improved.

The invention provides a composite mobile robot with wheel-track legs. The composite mobile robot comprises a frame, track arms, support legs and a wheeled elevating mechanism, wherein the track arms are connected with the frame through an inner shaft and an outer shaft, the four sets of the track arms are symmetrically distributed at four corners of the frame; the support legs are connected with the frame through a support leg transmission shaft, and the two support legs are symmetrically distributed in front of and behind the frame; the wheeled elevating mechanism is connected with the frame through a connecting plate, and is arranged at the middle part of the frame. According to the composite mobile robot disclosed by the invention, motors are used for driving the track arms, the support legs and the wheeled elevating mechanism to move, so that the robot has different postures, the composite motion manner of wheels, tracks and legs is realized, and the obstacle surmounting capacity is greatly improved.

A probe vehicle wheel with variable diameter elastically capable of automatic extension relates to a probe car wheel. The invention solves the problem that the existing lunar vehicle has bad obstacle ability when meeting high barriers and traveling on loose and soft lunar slope as the wheel of the existing lunar vehicle is rigid wheel and the devices inside the wheel are impacted due to collision between the wheel and hard object. A driving flange is connected with the output end of a speed reducer in a driving device, the driving flange is hinged with a plurality of support bars, the other end of the support bar is hinged with a slide bar, one end of the slide bar is fixedly connected with the inside wall of a flange sheet, the other end of the slide bar is sleeved with a spring and is inserted in a corresponding sliding chute together with the spring, the slide bar can radially slide along the sliding chute, one end of the spring is fixedly connected with the slide bar, the other end of the spring is fixedly connected with the bottom of the sliding chute, a limited block is installed inside the sliding chute and positioned outside the spring, and a plurality of tooth sheets are uniformly distributed on the flange and are fixedly connected with the flange. In the invention, the wheel diameter can be adjusted automatically according to topographic condition, thereby improving wheel traveling ability and reducing the impact of wheel for the devices inside.

A running board device comprises a stationary running board; a retractable running board apparatus comprising a retractable mechanism moveable between a stretched position and a retracted position and a retractable running board mounted to the retractable mechanism, wherein at the stretched position, at least a part of the retractable running board stretches out below the stationary running board and beyond the stationary running board, and at the retracted position, the retractable running board is retracted into below the stationary running board.

The invention discloses an underwater working robot which is characterized by mainly comprising a vehicle body module, a manipulator module or/and an underwater camera module, a functional component module and a control module, wherein the modules are completely isolated mechanically and electrically; the vehicle body module mainly comprises a six-wheel and six-drive sealing vehicle body, a vehicle body direct current servo motor, a vehicle body motor driver, a vehicle body underwater ultrasonic sensor, a vehicle body temperature pressure sensor, an underwater lighting lamp, a vehicle body waterproof plug, a vehicle body inflating valve and a vehicle body anti-radiation lead plate; the manipulator module mainly comprises a base, a waist part, a large arm, a small arm and a tail end executer; the base, the waist part, the large arm and the small arm are connected with one another through hollow joints; air is filled into a manipulator, and wires are arranged in the manipulator; the underwater camera module mainly comprises an underwater camera, an underwater camera lighting lamp and a bidimensional tripod; the functional component module mainly comprises a storage box, an underwater dust remover and an underwater cutter; and the control module mainly comprises a main control console and a hand-control box.

The invention discloses a cooperative optimization and control method for a mixed traffic flow of an expressway. The cooperative optimization and control method for the mixed traffic flow of the expressway is applied to vehicle optimal control under a merging scene of a ramp of the expressway. The cooperative optimization and control method for the mixed traffic flow of the expressway comprises the steps of predicting a vehicle track by using a microscopic vehicle following model; determining an optimization and control target vehicle; determining an optimization track section of a controllable vehicle; controlling a decision point and an admissible state set under each time; and carrying out optimization and control on the vehicle track. The cooperative optimization and control method forthe mixed traffic flow of the expressway has the beneficial effects that a microscopic traffic flow simulation environment based on the microscopic vehicle following model is established, and trafficeffects of different traffic states and different automatic driving vehicle permeability are analyzed; a brand-new cooperative merging model is proposed on the basis of the microscopic following model, traffic characteristics, geometric constraint and security constraint of the expressway are considered, and a cooperative merging problem is concluded into an optimization and control problem aboutdiscrete time state constraint; and a solving method based on dynamic programming is proposed to effectively solve the problem.

The invention discloses a horizontal arm type three-coordinate measuring and ruling machine, which includes a base, an upright column and a horizontal arm, wherein the upright column and the horizontal arm are made of lighter material, namely aluminum; all three shafts adopt two sets of linear slides; and the linear slide of the horizontal arm is mounted by adopting two mutually vertical surfaces, and an adjustable pull rod is mounted in the horizontal arm for adjusting the curve and deformation caused by other causes as self weight. The horizontal arm type three-coordinate measuring and ruling machine solves the problems in the market that the existing three-coordinate ruling machine has unstable mechanism, complex structure and high cost, and is complex to machine the parts and inflexible to operate. The shafts are mutually vertical and matched with the precise linear slides to realize the three-dimensional movement, so as to achieve the measuring and ruling functions in the three-dimensional space; and the three-coordinate measuring and ruling machine can support all sorts of triggering, analog scanning and non-contact optical measuring heads, and can be widely applied to the measuring and ruling of large mechanical parts as automobiles, motorcycles, excavators, ship engines and dies.

The invention relates to a six-wheel/leg half ball shell detecting robot, pertaining to the celestial body detecting facility field, which comprises a body and a moving mechanism connected which the body. The body comprises an upper chassis and a lower chassis, and a vision mechanism positioned at the upper end and a half ball shell; wherein the upper and lower chassis consists of two layers of round tray type structures which are parallelly arranged; the interlayer of the component is provided with an energy module; the circumferential edge between the upper chassis and the lower chassis is evenly provided with six wheel/leg structures. The middle part of the upper chassis is provided with an interlayer supporting component which fixes the vision mechanism which can be lifted. The robot can adapt to special environment through changing the different moving manners of the robot. The invention has the advantages of the foot type walking mechanism of a wheel type steering mechanism; the six groups of wheels/legs can realize a plurality of moving manners so as to realize no-radius turning; the two legs of the detecting robot can realize the function of an operation arm; flexible and reliable operation also can be progressed in special environment through arranging various additional devices.

A steering control method for a trailer includes firstly, controlling steering of front wheels of a tractor and acquiring deflection angles theta 1 of inner steering front wheels of front wheels of the tractor and an included angle alpha between a longitudinal central vertical plane of the tractor and a longitudinal central vertical plane of the trailer; and secondly, controlling steering of other pairs of steering wheels of the trailer, so that deflection angles of various other inner steering wheels on the tractor meet an inequality of arctan [(Li/L1)Xtan(theta 1)-3 degrees]</=theta i</={arctan[(Li/L1)Xtan(theta 1)]+3 degrees, and deflection angles of various inner steering wheels on the trailer meet an inequality of [alpha-arctan(Z/P)-3 degrees]</=theta j</=[alpha-arctan(Z/P)+3 degrees]. The invention further provides a controller, the trailer and a steering system of the same. The steering control method, the controller, the trailer and the steering system have the advantages that the various wheels of the trailer can at least rotate around the same steering central area, abnormal abrasion to tires is obviously relieved, and the steering stability and the passing ability of the trailer are improved.

The invention discloses an intelligent variable rate fertilizer for rice and a variable rate fertilization method thereof. In the technical scheme of the variable rate fertilizer, a hyperspectral remote sensing system and an image acquisition system are arranged on the front end of a traction engine body; a variable rate fertilization unit is arranged on the upper part of a support rack; a fertilizer spreading mechanism is connected with the variable rate fertilization unit and is arranged on the lower part of the support rack; a speed measuring sensor is arranged on a ground wheel; the variable rate fertilization unit and the fertilizer spreading mechanism are both connected with a hydraulic drive system; a GPS antenna and a GPS mobile station which can communicate with the hyperspectral remote sensing system and the image acquisition system are arranged in the traction engine body; and a control system is used for processing data and controlling the actuation of the variable rate fertilization unit and the fertilizer spreading mechanism. The variable rate fertilization method realizes real-time detection of the contents of N, P and K in rice through information fusion of the hyperspectral remote sensing system and the image acquisition system, and can achieve the rice fertilization according to needs based on nutritional profits and losses. The invention has the advantages of accurate fertilization and good controllability, and is suitable for fertilization in the rice growing period.

The invention discloses a steering control system and a steering control method of a nine-shaft automobile chassis. The system comprises a mechanical drive device, a power-assisted steering device, a hydraulic drive device and a steering control device which are used for driving wheels to steer, wherein the mechanical drive device and the power-assisted steering device drive wheels on first, second, third, fourth and fifth steering shafts to steer respectively; sixth, seventh, eighth and ninth steering shafts are provided with medium locking cylinders and steering cylinders respectively; extended ends of each medium locking cylinder and each steering cylinder are connected with a steering knuckle arm of a corresponding steering shaft to form an interlocking mechanism; and the steering control device connects or disconnects oil inlet and oil return paths of a corresponding medium locking cylinder and a corresponding steering cylinder according to a steering mode and drives wheels on a corresponding steering shaft to steer. The mechanical drive device and the hydraulic drive device drive wheels on different steering shafts to steer respectively, so that various steering modes are provided. On the basis, the invention also provides a hoist using the steering control system.

The invention provides a moving block train control system (China train control system (CTCS)-3I) and method based on a CTCS-3. The moving block train control system and method are used for solving the problem that a high-speed train cannot realize moving block. According to the moving block train control system, hardware equipment is not additionally arranged on the basis of an existing CTCS-3, through a control algorithm, a driver sends application for registration to an RBC before the train is pulled out, and train registration is completed after train recognition is completed; and after the train starts operation, hardware coordinately completes collection and transmission of train operation data, train integrity detection, calculation of a target distance mode curve and moving authority generation, and moving block is realized. A target point of train tracking is changed from an existing track circuit starting end into the tail of the advancing train, the train tracking interval is shortened, and the passing ability of the train in a section is improved by 50%; and in the train operation control process, train positioning and parallel monitoring of the speed and the tracking interval are added by the CTCS-3I, and the safety of train operation is improved.

The invention relates to a row cleaner for agricultural no-tillage planting machinery, especially to a biomimetic claw type floating stubble and grass clearing mechanism. The invention is intended to resolve the problems of effect on normal seeding operation and seeding quality or the like because of the winding, accumulation and clog on a colter by a mass of stalks and weeds coated on the protective cropland surface. The floating row cleaner mainly comprises a pair of finger-shaped grass-poking wheels connected with the ground, an installation rack for convergent arms, a cam for regulating depth and a lower limiting arm, wherein the finger-shaped grass-poking wheels are key parts. The pair of finger-shaped grass-poking wheels forming splay with each other is mounted on installation rack for convergent arms, wherein the centers of the pair of finger-shaped grass-poking wheels of the front ends converge at a point and are not interfered with each other. The middle of each finger-shaped grass-poking wheel is provided with a round disk whose circumference is distributed with a plurality of finger-shaped teeth uniformly. The plurality of teeth are radially distributed, line parts of the finger-shaped teeth form a certain angle with the radial line in radial direction of the round disk, and extend to the outer circle from arc.

The invention discloses a pipeline robot with an adjustable crawler belt angle and belongs to the field of pipeline robots. A vehicle body of the robot comprises a frame, a left main crawler belt assembly, a right main crawler belt assembly, a crawler belt angle adjusting mechanism, a sonar fixing frame, a sonar probe, a camera lifting frame, a camera unit, an auxiliary light source, an electronic control box, an electronic control box pull door and a cable traction frame. Main crawler belts are installed on the left side and the right side below the vehicle body through crawler belt rotation shaft hole sites. The crawler belt angle adjusting mechanism is arranged between the main crawler belts. The main crawler belts are outwards adjusted to a certain angle to form a V shape. The sonar probe is installed on the frame through the sonar fixing frame. One end of the camera lifting frame is arranged on the frame, while the other end of the camera lifting frame is provided with the camera unit and the auxiliary light source. The pipeline robot has the advantages of being compact in structure, strong in passing capacity and complete in comprehensive working capacity.