125results about How to "Control direction" patented technology

The invention provides a manually priority tractor self-steering method, which comprises that: a pressure switch judges whether an enclosed hydraulic steering gear connected with the pressure switch is in a working state, if the enclosed hydraulic steering gear is in the working state, the current manual operation state is maintained, and if the enclosed hydraulic steering gear is not in the working state, a controller powers up an electromagnetic switch valve to make the electromagnetic switch valve in a closed state so as to open an electro-hydraulic proportional direction valve; the spool of a priority valve moves, so that the oil in an oil pump enters the electro-hydraulic proportional direction valve; a self-steering pipeline is communicated with a steering cylinder of the tractor through a hydraulic control direction valve; and the controller controls the flow direction and flow velocity of the oil in the self-steering pipeline by controlling the spool opening of the electro-hydraulic proportional direction valve, so that a piston of a steering hydraulic cylinder extends or retracts to execute the expected steering operation. The method realizes the self-steering of the tractor, guarantees the priority of the manual operation, and provides a technological base for an automatic navigation system for field work for the tractor.

To make it possible to control an image capturing position and its direction in water easily and flexibly through the use of a miniature unmanned aerial vehicle equipped with a plurality of rotors. This is solved by an underwater image capturing apparatus including a miniature unmanned aerial vehicle equipped with a plurality of rotors, a winding machine capable of delivering and winding a string-like member, and an underwater camera capable of capturing images in water, wherein the winding machine is fixed to the miniature unmanned aerial vehicle and the string-like member is connected to the underwater camera.

The invention discloses an optical lens with free-form surfaces for an LED automobile headlight. The optical lens is made of a transparent material, the transparent material is PC (polycarbonate) or PMMA (polymethyl methacrylate) or optical glass, and the lens consists of an incident surface and an emergent surface. A cavity is disposed in the center of the bottom of the lens, an LED is mounted in the cavity, a part of the wall of the cavity is a cylindrical surface, the incident surface consists of the cylindrical surface and the free-form surface positioned on the top of the cylindrical surface, the outer side surface of the lens is the other free-form surface, and the top of the lens is a plane, namely the emergent surface. Light rays emitted from a light source almost can be completely collected and used due to the fact that luminous efficiency of the LED light source is high and the lens with the free-form surfaces is adopted, energy utilization rate is high, and the luminous direction can be controlled due to a light form of the LED light source. In addition, the cavity is arranged in the middle of the bottom of the lens, the LED is mounted in the cavity, accordingly, the LED light source can be installed easily, the size of the lens is small, and a large space is reserved to facilitate installation of a radiating device. Besides, the LED light source is turned on, the light rays are emergent via the lens, the elliptical light form can be obtained, and the requirement of illuminance distribution of the national standards GB25991-2010 is met.

An apparatus for preparing the semi-solid molten body of iron and steel is composed of a special container for molten iron or steel, temp regulator, stirrer and bottom vibrator. The linear layer of said special container contains nucleation promoter. Its method includes pouring the molten iron or steel at the temp which is 5-10 deg.C, higher than the temp of liquid-phase line into said special container, and stirring or vibrating for 1-10 min.

A golf club head that includes several slotted apertures that extend through the body of the club head, the slotted apertures being defined by several generally parallel, spaced-apart elongated spring members, the spring members can be used to create a lower stiffness at their mid-section rather than their ends.

The invention aims to provide a method and equipment for crawling a page. The method comprises the steps that crawling equipment obtains candidate page identification information corresponding to a candidate crawling page according to a crawled page; the candidate page identification information is added into a corresponding to-be-crawled page set according to relevant information of the candidate crawling page and the crawled page, and the to-be-crawled page set contains page identification information of one or more pages to be crawled; targeted crawling identification information of the page to be crawled is determined according to the to-be-crawled page set; and a targeted page corresponding to the targeted crawling identification information is crawled. Compared with the prior art, according to the relevant information, the method and the equipment for crawling the page control the crawling scheduling action effectively, so that the configurability of crawling scheduling is achieved, the crawling can be diffused purposefully; and moreover, the moving direction and speed of a crawler in webpages are controlled, the crawling efficiency of a vertical crawler is improved, and the completeness of crawling data is guaranteed.

The invention provides an automatic tunnel waterproof material laying and hanging construction trolley which comprises a rack, tires, a driving system, an executing mechanism, an arrangement mechanism and a master control console. The tires are rotatably installed at the bottom of the rack, the master control console is installed on the rack, the driving system comprises a driving motor and an oil pump, the executing mechanism comprises a rocker arm spindle, a first telescopic rod, a second telescopic rod, a pushing beam and a pushing rod, the driving motor drives the rocker arm spindle, the first telescopic rod is installed at the first end of the rocker arm spindle, the second telescopic rod is installed at the second end of the rocker arm spindle, one end of the pushing beam is connected with the first telescopic rod, the other end of the pushing beam is connected with the second telescopic rod, the pushing rod is installed on the pushing beam. The arrangement mechanism comprises an arrangement beam, wherein one end of the arrangement beam is fixedly installed on the first telescopic rod, and the other end of the arrangement beam is fixedly installed on the second telescopic rod. The flatness and looseness during laying and hanging of a preliminary-stage supporting surface isolation layer of a tunnel are guaranteed, and the problems of lining void and the like caused by swelling of waterproof plates at a later construction stage are avoided.

The invention provides a preparation method for a lamellar C/C-SiC-MoSi2 ceramic matrix composite. The method comprises the steps that silicon carbide powder and molybdenum disilicide powder are dispersed in isopropyl alcohol and then stirred evenly after iodine is added, and first suspension liquid and second suspension liquid is obtained; the density of a carbon-fiber three-dimensional fabric is increased by adopting the mode of hydrothermal glucose permeation, the carbon-fiber three-dimensional fabric is clamped in a specially-made hydrothermal kettle with a positive electrode and a negative electrode, then the specially-made hydrothermal kettle is placed in a drying oven for heat preservation, and then hydrothermal electrophoretic deposition is performed; homogeneous-phase hydrothermal treatment is repeatedly performed in an aqueous glucose solution until the density reaches 1.3-1.5 g/cm<3>, and then heat treatment is performed after the fabric is dried. According to the preparation method for the lamellar C/C-SiC-MoSi2 ceramic matrix composite, the prepared composite is moderate in density and compact in structure, and binding between a C/C interface and a SiC interface, binding between the SiC interface and a MoSi2 interface and binding between the C/C interface and the MoSi2 interface are good; the composite with the high strength and the good high-temperature oxidation resistance can be obtained at low temperature, and the preparation method has the advantages that the raw materials are easy to obtain, the preparation technology is simple, operation is easy and convenient, and the cost is low.

The invention discloses a method for controlling the direction of a solidification structure of a cast ingot through electricity conductive crystallizer electroslag remelting and belongs to the technical field of metallurgy. The method comprises the steps that (1) a slag material with the high conductivity is prepared and then baked; (2) the filling rate and the insertion depth of an electrode are determined, and a base wad, an arc striking agent and an electricity conductive crystallizer are right placed; and (3) a path of an electric current flowing through a power source, the consumable electrode, the slag material, a bottom water tank and the power source is selected, and arc striking, material charging and slag melting are conducted; after the slag material is melted down, a remelting electric current and the remelting voltage are set; the path of the electric current is set through closing of a switch in the electroslag remelting process, the distribution ratio of electric currents flowing through the crystallizer and the bottom water tank is controlled, the shape and the depth of a metallic molten pool are changed, and the direction of the solidification structure is controlled; and in the later period of remelting, electricity is cut off after electroslag remelting feeding operation, cooling is conducted, and the remelted cast ingot is obtained. According to the method for controlling the direction of the solidification structure of the cast ingot through electricity conductive crystallizer electroslag remelting, a slag system with the high conductivity distribution ratio is adopted, and the tendency of axial crystallization of the solidification structure of the cast ingot is improved; and the crystallization direction of the solidification structure of the cast ingot is controlled in the remelting process, and the prepared cast ingot has good surface quality.

The present invention discloses a four-directional tip deflection device for endoscope including a tip deflecting mechanism, an elastic element, a support portion, a four-directionally flexible body, and first, second, third and fourth wires. The tip deflecting mechanism includes an endoscope lens, and first, second, third and fourth connecting portions facing the endoscope lens. The elastic element is sheathed to the tip deflecting mechanism. The support portion is sheathed to the elastic element. The four-directionally flexible body disposed in a first accommodating space has an end connected to the tip deflecting mechanism and another end connected to the support portion. The first, second, third and fourth wires are connected to the first, second, third and fourth connecting portions respectively. If the first, second, third or fourth wire is pulled, the four-directionally flexible body will be bent into an angle corresponding with a first, second, third or fourth wire direction respectively.

A backpack type small berry picking machine comprises a back frame, a miniature gasoline engine, a centrifugal type clutch, a steel wire flexible shaft, a secondary gear drive mechanism, an eccentric vibration mechanism, a housing, a front annular handle, a rear handle, and branch vibrators; the miniature gasoline engine is arranged on the back frame through a vibration isolation rubber pad; an output shaft of the miniature gasoline engine is connected with an input end of the steel wire flexible shaft through the centrifugal type clutch; a square joint of the output end of the steel wire flexible shaft is connected with a square interface of an axle drive bevel pinion of the secondary gear drive mechanism; the eccentric vibration mechanism comprises an upper crank, a lower crank, an eccentric adjustable camshaft, a dual-face guide rail, an upper reciprocating oscillating lever and a lower reciprocating oscillating lever; the branch vibrators are respectively fixed on the front ends of the upper and lower reciprocating oscillating levers; the front portion and rear portion of the housing are respectively provided with a front annular handle and a rear handle; the rear handle is provided with a speed regulator; the speed can be regulated so as to allow the small berry branches to generate different frequency vibrations, and the vibration force can separate the small berries from the branches.

The invention discloses a micro lens array type LED (light-emitting diode) headlamp for automobile illumination, which comprises an LED chip, an aluminium substrate and a radiator. The micro lens array type LED headlamp further comprises a collimator and a free-form surface micro lens array. The LED chip is welded on the aluminium substrate; the aluminium substrate, the collimator and the free-form surface micro lens array are arranged on the radiator; the light-emitting surface of the LED chip faces the incident face of the collimator; after light passes through the collimator, the light is emitted in a parallel light beam way, and the light enters the incident face of the free-form surface micro lens array vertically. The micro lens array type LED headlamp for automobile illumination, disclosed by the invention, has the advantages of less spare and accessory parts, simple and stable structure, convenient installation and high radiating efficiency, in addition, a light barrier is not needed for light distribution, the loss of light energy caused by a light distribution system is reduced, and the light energy use ratio is improved. By adopting the free-form surface optical design, the trend of light rays can be effectively controlled, the glare effect is restrained, and meanwhile, the light distribution requirements of the LED headlamp for an automobile in the national standard GB25991-2010 can be met.

The invention discloses a stent distracting vena cava membrane breaker applied to endovascular therapy. In an interventional therapy membrane Budd-Chiari syndrome method used in recent years, a hollow puncture needle is used, and the principle is: breaking a membrane with the puncture needle, making a guide wire pass through the membrane, and guiding a saccule to expand for eliminating a narrow section, or directly breaking the membrane with the guide wire. The key point of the technology is that: a needle head is aligned with the center of the membrane with appropriate force. The defect is that: if the needle head is not aligned with the center but is deviated towards the periphery, and excessive force is applied, blood vessels are broken, and hydropneumothorax or cardiac tamponade which endangers the life of a patient is caused by wrong insertion of the needle head into a pleura or a pericardium. The invention provides a stent which can contract and expand is arranged on the head part of a puncture needle sheath catheter on the basis of the conventional puncture needle, and stronger support force and more accurate directional property are provided for a membrane breaking needle under the coaction of the unfolded stent and a blood vessel cavity. By adopting the stent distracting vena cava membrane breaker, the defects of the prior art can be overcome, and a good membrane breaking effect is achieved.

The invention relates to a technique treatment method for induction heating of a special-shaped piece, belonging to the technical field of induction heating treatment technique of automobile parts. The technique treatment method has the following technical process and steps: (1) selecting and using induction heat treatment equipment with corresponding frequency and power according to the shape and the technical requirements of the special-shaped piece; (2) designing an inductor according to the shape and the technical conditions of the special-shaped piece; (3) selecting a magnetizer with corresponding type and specification according to the frequency of the selected induction heat treatment equipment; (4) processing the magnetizer according to the inductor and the shape of the special-shaped piece; and (5) adding the magnetizer to the position needing magnetic fields to be concentrated so as to form a complete induction heater. Through he technique treatment method, a hardening layersimilar to the contour line of a part is obtained after induction heat treatment is carried out on the part. The technique treatment method not only ensures that the hardening layer of the small special-shaped piece meets the technical requirements, but also shortens heating time under the condition of constant power, reduces the energy consumption, and simultaneously reduces the electric field intensity and the magnetic field intensity with high-frequency radiation of an operation part to be below half of the national standard specified value.

The invention discloses a self-calibrating circuit of a current source. By converting current errors into voltage errors, sampling the voltage errors and converting the voltage errors into figure signals for self-calibrating processing, the self-calibrating circuit combines the processing characteristics of existing simulation calibrating technology and figure calibrating technology, is simple in structure and can achieve bidirectional calibration.

The invention discloses a vena cava membrane puncturing device used for endovascular therapy. In recent years, the method for interventional therapy of the membrane-type Budd-Chiari syndrome (BCS) utilizes a hollow membrane puncturing needle and adopts the principle that a membrane is punctured by the membrane puncturing needle, a guide wire penetrates through the membrane to guide a saccule to dilate so as to eliminate a stenotic segment, or the membrane is directly punctured by the guide wire. The technology has the key point that the needle head is aligned to the center of the membrane and proper force is required, while the defect lies in that if the direction of the needle head does not align to the center but deviate to the periphery and the force is overlarge, a blood vessel can be punctured, the membrane puncturing needle is mistakenly punctured into the pleura or the heart sac, causing unnecessary injury, and a saccule catheter is required to be changed for secondary membrane dilatation after the membrane puncturing. The invention provides a vena cava membrane puncturing dilator, which is characterized in that a dilatable saccule with fixing and orienting functions is added on the periphery of the tip of traditional membrane puncturing needle, and can overcome the defects of high difficulty of the membrane puncturing technology and high risk and achieve better effects of one-time membrane puncturing and membrane dilatation.

The invention discloses a free-form surface micro lens array for an LED (light-emitting diode) headlamp of an automobile. Light emitted by an LED light source of the LED headlamp of the automobile is collimated and is then emitted out in a parallel light beam mode; the free-form surface micro lens array is formed by closely distributing a plurality of free-form surface micro lenses in the whole section of the parallel light beam; all the free-form surface micro lenses are integrally formed; the incident face of each free-form surface micro lens is a plane, and the emergent face of each free-form surface micro lens is a free-form surface. According to the free-form surface micro lens array disclosed by the invention, a light barrier is not needed for light distribution, loss of light energy caused by a light distribution system is reduced, and the light energy use ratio is improved. By adopting the free-form surface optical design, the trend of light rays can be effectively controlled, the glare effect is restrained, and meanwhile, the light distribution requirements of the LED headlamp for the automobile in the national standard GB25991-2010 can be met.

The invention discloses a wire feed and traction system of a wet wire drawing machine. The system comprises a metal wire wheel, a first drawing die, a second drawing die, ... , an N-1-th drawing die, an N-th drawing die, and a natural air cooling traction wheel mechanism. The first drawing die, the second drawing die, ... , and the N-1-th drawing die are disposed on a mould support, and the N-th drawing die is arranged on a position adjustable die holder. Metal wire raw materials are winded on the metal wire wheel, and successively pass through wire penetrating apertures of the first drawing die, the second drawing die, ... , the N-1-th drawing die, and the N-th drawing die to form a cutting wire finished product, wherein the drawing die are parallel to each other and arranged coaxially, and aperture diameters of wire penetrating apertures are reduced step by step. The cutting wire finished product is winded on a traction disc of the natural air cooling traction wheel to be packed up.The invention solves the problem of mould loss caused by overheating during wire penetration, so as to increase service life of equipment and reduce processing costs of cutting wires.

The invention provides a method for making controllable curved holes through femtosecond lasers with the assistance of an electric field. Devices needed in the method comprise a femtosecond laser generator, the electric field with adjustable intensity and a six-dimensional mobile platform. The method comprises the steps that an aluminum oxide material is ultrasonically cleaned in acetone, absolute ethyl alcohol and deionized water for 5 min separately; the treated aluminum oxide material is fixed on the six-dimensional mobile platform, the femtosecond lasers generated by the femtosecond laser generator are gathered on the aluminum oxide material through a 5X objective lens, and the light path formed by the femtosecond lasers and the platform form an alpha angle; parameters such as energy, repetition frequency and the number of pulses of the femtosecond lasers are adjusted to control the depth-diameter ratio of micro holes, and meanwhile the intensity of the electric field is adjusted to control the curved directions and radians of the micro holes; the machined aluminum oxide material is taken down from the six-dimensional mobile platform and ultrasonically cleaned in acetone, absolute ethyl alcohol and deionized water for 5 min separately. By means of the method for making the controllable curved holes through the femtosecond lasers with the assistance of the electric field, control over the curved hole directions and the radians of the curved holes can be achieved.

The invention discloses a steel bar bending mechanism and method for house bridge construction. The mechanism comprises a bottom plate, the outer wall of a first connection rod is fixedly sleeved witha fixing barrel, the outer wall of a second connection rod is rotationally sleeved with a pressing roller, a first motor is fixedly installed on the back face of a second side plate through a base, one side of the fixing barrel is provided with a rolling limiting device located on the upper surface of the bottom plate, a tooth plate is arranged on the upper surface of a sliding rail, a gear is inengaged connection with one side of the top of the tooth plate, a clamping device is arranged on the top of a fixing plate, the other side of a first side plate is provided with a polishing device, and the second side plate is provided with a cleaning device. By means of the arranging way of the pressing roller, one end of a steel bar is bent and mixed into concrete, high bond stress can still beobtained, therefore, the steel bar is prevented from being loosened in building concrete, the other end of the steel bar is polished and sharpened, and therefore the steel bar can be conveniently inserted into the concrete.

The invention belongs to the technical field of shield tunnel supporting, and particularly relates to a shield tunnel segment orientation method. The method includes the steps that a grouting bag penetrates through any one or more grouting holes of a segment through a grouting pipe and extends into a gap between the inner wall of a tunnel and the segment, and double-liquid slurry is injected into the grouting bag through the grouting pipe to enable the grouting bag to be expanded, so that positioning and supporting are conducted on the segment; meanwhile, cement slurry is injected through any one or more grouting holes of the remaining grouting holes in the segment so as to fill the gap between the segment and the tunnel, and the segment is fixed; and the double-liquid slurry is injected between the segment and the inner wall of the tunnel through the grouting pipe and the grouting bag, the double-liquid slurry is rapidly solidified and supported in the grouting bag, and the slurry is directionally solidified through the grouting bag, so that the segment and the inner wall of the tunnel can have high stability, and the segment is effectively prevented from floating upwards, sinking and swinging leftwards and rightwards.

The invention provides a natural gas dehumidifying device. The natural gas dehumidifying device comprises a straight pipe inlet section, a straight pipe outlet section, a rectification section and a liquid collecting device, wherein one end of the straight pipe inlet section and one end of the straight pipe outlet section are connected with a natural gas pipeline, and the rectification section is arranged between the straight pipe inlet section and the straight pipe outlet section. The rectification section is of a variable-section structure, and a flow guide liquid distribution device is installed in the rectification section. The liquid collecting device is communicated with the interior of the straight pipe outlet section through a liquid discharging pipe so as to collect liquid separated from the straight pipe outlet section. In the natural gas dehumidifying device, the flow guide liquid distribution device is installed at the axis position of a flow channel composed of the rectification section and the straight pipe outlet section under positioning and fastening of a flange, and the speed of natural gas flowing through the flow channel is increased and decreased by changing the shape of a cavity formed by the inner wall of the pipeline and the flow guide liquid distribution device, so that the flowing speed and direction of in-coming flow natural gas are controlled, the pressure and temperature of the gas are changed, and thus liquid in the natural gas is separated out.

The invention relates to a cleaning device, in particular to an automatic cleaning device for a road guardrail. The automatic cleaning device for the highway guardrail is high in working efficiency and high in safety. The automatic cleaning device for the highway guardrail comprises a supporting plate and a push handle, and the push handle is arranged on one side of the top of the supporting plate; a movable assembly which is arranged on one side of the top of the supporting plate; wheels which are arranged on one side of the bottom of the supporting plate and a certain part of the movable assembly; and a cleaning assembly which is arranged in the middle of the top of the supporting plate. Through cooperation of the movable assembly and the cleaning assembly, the guardrail can be automatically cleaned, the working efficiency of people is improved, people do not need to manually clean the guardrail, attention can be paid to passing vehicles, accidents are avoided, the safety of people is improved, and through cooperation of the water outlet assembly, the driving assembly and the water sprinkling assembly, when the guardrail cleaning device is used for cleaning a guardrail, water canbe uniformly sprayed to the guardrail, so that the guardrail is cleaned more cleanly.

The invention discloses a free-form optical reflector for an LED (light-emitting diode) motorcycle low beam, wherein an internal surface of the reflector is a free-form surface to form an optical reflecting surface; the bottom surface of the reflector is provided with an opening for installation of an LED; one end rightly facing the bottom surface is a light exit port of the reflector; the majority of light emitted by the LED light source is reflected by the internal surface of the reflector and then is emergent to an illuminating plane, and the other light is directly emergent to the illuminating plane. The reflector is divided into an upper part and a lower part; the free-form surface at the upper part of the internal surface of the reflector is mainly used for reflecting the light above a horizontal plane to the illuminating plane below the horizontal plane; the free-form surface at the lower part of the internal surface of the reflector is mainly used for gathering diffused light below the horizontal plane to the illuminating plane below the horizontal plane. The free-form optical reflector for the LED motorcycle low beam has the characteristics of simple structure, convenience in installation and high utilization rate of light energy; light direction can be effectively controlled and the glare effect can be inhibited; and the free-form optical reflector for the LED motorcycle low beam meets the light distribution requirements in GB5948-1998.

The invention discloses a power cable core recycling device. The power cable core recycling device comprises a bottom plate, wherein a positioning body is arranged at the front end of the bottom plate; first pressure frames are arranged on two sides of the positioning body; a first pressure wheel is arranged on each first pressure frame; a cutting mechanism is arranged behind the positioning body; a skin winding mechanism is arranged on a cutting bracket of the cutting mechanism; the cutting mechanism is fixedly connected to the bottom plate; a winding mechanism is arranged behind the cutting mechanism and is fixedly connected to the bottom plate; a control box is further arranged on the bottom plate in front of the winding mechanism; an infrared distance meter is arranged above the control box. The power cable core recycling device is provided with the infrared distance meter, the density situation of winding of power cable cores around a winding wheel can be detected, and the operation speed of a hydraulic cylinder and a second motor can be adjusted through a main controller, so that the cable cores are tightly arrayed on the winding wheel.