3412results 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.

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.

A high-precision inner detecting device for seabed oil and gas pipeline flaws is characterized in that an anti-collision head and a front power packing cup are connected to the front end of a body support shaft, the rear of the front power packing cup is connected with a floating magnetization detecting block through a hinge mechanism, and a lateral jacking spring is disposed on each of the front side and the rear side of the floating magnetization detecting block to form a floating magnetization circuit and a magnetic flux leakage detecting block unit. A finger probe is disposed on the floating magnetization detecting block. A guide groove and a limit ring are arranged at the rear end of the body support shaft. A rear power packing cup is disposed at the rear of the guide groove. The front packing cup and the rear packing cup jointly form a power drive system. A battery pack unit and an electronic recorder are respectively disposed at the front and the rear of a seal cabin in the body support shaft in an opposite insertion manner. A detector odometer wheel unit is mounted at the tail of the body support shaft. By the floating magnetization detecting structure, online inner detection of oil and gas pipeline flaws under complex working conditions can be well achieved.

A trace prediction control method for an autonomously driven vehicle based on a traffic signal lamp belongs to the technical field of an automobile. The invention aims to provide the trace prediction control method for the autonomously driven vehicle based on the traffic signal lamp, wherein trace prediction control is performed on the autonomously driven vehicle in real time based on information of the traffic signal lamp, thereby maximally reducing the number of stoppage times and realizing energy saving and emission reduction effects. The trace prediction control method comprises the steps of acquiring information, performing dynamic modeling on an automobile, and performing online optimization on a trace planning control problem of the autonomously driven vehicle. The autonomously driven vehicle according to the invention can optimize a speed trace in a prediction distance according to the information of the traffic signal lamp, so that the vehicle smoothly passes through an intersection and furthermore the number of stoppage times of the vehicle is reduced.

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 relates to a small unmanned ground robot which is characterized by comprising a traveling drive mechanism, an arm mechanism, a camera tripod head pat, a carrier frame of the robot, and a control module, wherein the traveling drive mechanism is fixed on the carrier frame of the robot; the arm mechanism is arranged on the traveling drive mechanism in a detachable mode; the camera tripod head part is arranged on the arm mechanism in a detachable mode; and the control module is separated from the robot to control various complicated actions of the robot. The small unmanned ground robot has the advantages that the traveling drive mechanism of the robot adopts a track mode to increase the adhesive force with the ground; track wheels adopt the design of absorbing energy and vibration to improve the capacity of collision resistance of the robot; detachable front auxiliary wheels adopt a track structure to improve trafficability performance of the robot, and have the functions of assisting spanning entrenchments and obstacles, assisting climbing stairs, and rotating and turning over; mechanical arms adopt six freedom of motion, have the characteristics of flexibility, convenience, reliability, strong working capability, and the like, and can grab and carry objects; the robot adopts the design of no exposed skinned wires and water resistance and can work all day long; and the traveling drive mechanism can walk in water.

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 discloses a built-in plug door device for a rail vehicle. The device comprises a control mechanism, a driving mechanism, a bearing mechanism, a compaction mechanism, a guide chute and a door leaf; the bearing mechanism comprises a guide post, two sleeves, a connecting rod, a sliding block and a guide wheel; and the control mechanism is respectively connected with the driving mechanism and the compaction mechanism. The advantages of an outward swing plug door and a built-in side sliding door are combined in the built-in plug door device, and the problem of smooth appearance of the built-in side sliding door is solved by plug movement; the outer side of the body is smoother, the influence of high-speed running pressure wave on the door leaf is reduced, and high-speed running noise is reduced; the body is 140 millimeters wider than the body using the outward swing plug door; and when the plug process of the door leaf is finished, the door leaf is compacted on the body, and the possibility that the door leaf drops outwards is totally limited, so safety and sealing reliability are 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.

The present invention discloses a piggyback mobile surveying and mapping system based on a laser radar and a panorama camera. The system mainly comprises a collection device module and a post-processing module. The collection device module is a piggyback mode and is mainly composed of a panorama camera, a laser radar, a controller, a hand-held terminal, a portable power source, a bracing piece and a piggyback frame, and each part is connected and supported by the piggyback frame. The system and method can continuously move the obtained surrounding scene information, and are good in passing ability, high in adaptability and high in data acquisition efficiency. The problems which the system overcomes comprise: (1) the problem of the failure of a current ground mobile measurement system in the environment without GNSS; (2) the problem of low efficiency because the traditional fixed laser scanning needs lots of station changing joint point cloud; and (3) the problem that a cart based on the two-dimensional SLAM technology is only suitable for the ground horizontal environment.

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 relates to a movable microwave emergency device for treating sewage, which comprises a carrier and a microwave sewage treatment system arranged on the carrier. The microwave sewage treatment system comprises a microwave reactor (2), a sedimentation filtering reactor (3) arranged on the lower part of the microwave reactor (2) and connected with the sewage outlet of the microwave reactor (2) through pipes, and a sensitizer arranged on the upper pipes of the microwave reactor (2) as well as an adding set (4) of other water treating agent. The movable microwave emergency device solves the technical issues that the current microwave sewage treatment system can not meet the requirement in terms of size for the vehicle and the utilization efficiency of the microwave is low. Particularly, the movable microwave emergency device is applicable to continuously treat the sewage generated by unexpected events and produced by enterprises with a little sewage producing quantity.

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 an automobile brake disc which comprises a brake disc body. The brake disc body is made of aluminum alloy. The two work faces of the aluminum alloy brake disc body are each provided with an abrasion-resistant layer in a composite mode. The abrasion-resistant layers are made of a ceramic reinforcing material. The abrasion-resistant layers made of the ceramic reinforcing material are metallurgically combined with the aluminum alloy brake disc body through the squeeze casting technology. The brake disc is low in weight, good in abrasion resistance and cooling performance, long in service life, low in maintenance cost, and capable of reducing automobile oil consumption, improving the passage capacity of an automobile, shortening the brake distance and improving safety of the automobile. According to a manufacturing method of the brake disc, by means of selective local strengthening and the squeeze casting technology, the two work faces of the aluminum alloy brake disc body are each provided with one abrasion-resistant layer made of the ceramic reinforcing material in the composite mode, the abrasion-resistant layers made of the ceramic reinforcing material are metallurgically combined with the aluminum alloy brake disc body so that abrasion resistance of the work faces of the brake disc can be guaranteed, and raw material cost and machining cost of the brake disc are reduced.

The invention discloses an independent suspension system. Two suspension oil cylinders are arranged between wheel edges of wheels on two sides and a frame respectively, and a steering mechanism drives the wheels on the two sides to perform steering. Two upper V-shaped swing rods and two lower V-shaped swing rods are arranged corresponding to the wheels on the two sides. Rod connection end portions of the two upper V-shaped swing rods are hinged to the upper portions of the wheel edges of the wheels on corresponding sides through spherical hinges respectively, and rod separation end portions of the two upper V-shaped swing rods are hinged to fixing members fixed below the frame along the lateral direction. Rod connection end portions of the two lower V-shaped swing rods are hinged to the lower portions of the wheel edges of the wheels on corresponding sides through spherical hinges respectively, and rod separation end portions of the two lower V-shaped swing rods are hinged to the fixing members fixed below the frame along the lateral direction. By means of the independent suspension system, possible frustrating effects caused by the suspension oil cylinders can be avoided, mutual independent motion of the wheel on the left side and the wheel on the right side can be achieved reliably, adhesion conditions of the ground are fully utilized, and control stability of the complete machine is improved. On the basis, the invention further comprises a crane with the independent suspension system.

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.