549results about How to "Meet actual use needs" patented technology

The invention relates to a method for preparing high heat-resisting polyethylene composite materials. The method takes advantage of the feature that thermosetting resin has sound rigidity and strength under high temperature after curing, and by adding reaction compatibilizing agent to act with thermosetting resin to form a semi-interpenetrating network of polyethylene and thermosetting resin, and thereby preparing novel polyethylene composite materials. The polyethylene, thermosetting resin, curing agent, accelerating agent, reaction compatibilizing agent and antioxidant which are premixed evenly in a high-speed agitator are added into a double screw extruder, and reactively blended at a proper temperature and rotation speed, the produced granules are extruded out, and the desired high heat-resisting polyethylene composite materials are achieved. Compared with the common polyethylene, the heat resistance and the strength of the materials under normal temperature and high temperature are improved remarkably, and the materials can be applied to the fields of civil buildings, auto parts, household electrical appliances as well as wires and cables, and the like.

The invention relates to a pose measure system of a cantilever type heading machine. The pose measure system comprises a laser pointing rangefinder and an optical goniometer. The pose measure system is characterized in that: the laser pointing rangefinder respectively emits a visible laser and an infrared ranging laser; the visible laser forms an image on a focal plane of a convex lens of the optical goniometer through the convex lens; a direction angle alpha<,> and a pitch angle beta<,> of a optical axis of the optical goniometer relative to a laser beam are obtained through image point coordinates. Because a preset optical axis of the optical goniometer is parallel to a fuselage axis of the heading machine, the alpha<,> and the beta<,> are the direction angle and the pitch angle of the fuselage axis relative to the laser beam. A spinning angle gamma of the fuselage relative to a horizontal plane can be obtained through a tilt angle sensor installed parallel to a datum plane of the heading machine. Therefore, influence on measurements of the direction angle alpha<,> and the pitch angle beta<,> due to the spinning angle gamma is corrected so as to complete the measurements of the direction angle alpha<,> and the pitch angle beta of the heading machine relative to the laser beam, and the spinning angle gamma of the heading machine relative to the horizontal plane. With the present invention, a range between the fuselage of the heading machine and the laser pointing rangefinder can be obtained through the infrared ranging laser; a position coordinate of the heading machine can be obtained through combining the position coordinate of the laser pointing rangefinder and parameters of emission angle of the laser beam; tunnelling workload and other information can be obtained through system output data.

The invention discloses an optimum design method of a small harmonic reducer. The optimum design method includes the steps 1), determining calculating parameters required by the optimum design to obtain target parameters of the optimum design; 2), determining a data range of the calculating parameters and the target parameters to obtain a target parameter solution set in accordance with the data range; 3), subjecting the target parameters in the target parameter solution set which is in accordance with the data range to iterative loop filtering to obtain optimal target parameters; 4), according to the obtained optimal target parameters and the corresponding calculating parameters, calculating to obtain other processing and manufacturing parameters to perform optimum design and manufacturing of the small harmonic reducer. The small harmonic reducer comprises a rigid gear and a flexible wheel which are mutually matched and adopts a wave generator of a double-wave-cam structure; the processing and manufacturing parameters are obtained by the above optimum design method. By means of adding correction factors and performing optimum design adjustment upon key parameters, the small harmonic reducer which is high in structural strength, long in service life and capable of realizing processing and manufacturing is obtained.

The invention discloses a method and device used for monitoring a three-way catalyst in an engine exhaust system. The method comprises the steps that the excess air coefficient of the inlet end of the three-way catalyst is adjusted according to the operation parameters of an engine; the jumping time of output voltage of a sensor installed at the outlet end of the three-way catalyst is detected; the jumping time is compared with the preset nominal time to obtain a comparative result; and according to the comparative result, whether the three-way catalyst is removed or ages is judged, and accordingly monitoring of the three-way catalyst is achieved. The three-way catalyst can be monitored online in real time by actively adjusting the excess air coefficient of the inlet end of the three-way catalyst and detecting the jumping time of output voltage of the sensor installed at the outlet end of the three-way catalyst.

The invention relates to an inductance and ultrasound coupling-assisted method for direct laser deposition of a metal material, belongs to the field of additive manufacturing and relates to a coupledenergy field. The energy field is obtained by coupling an inductance temperature field and an ultrasonic wave field. A follow-up electromagnetic induction device is suspended right below a laser headthrough an induction coil, so that the coil moves along with the laser head to preheat and slowly cool a round area around a molten bath. A bottom ultrasonic device is fixed between a worktable and abase plate, and ultrasonic waves are conducted to the molten bath upward through the base plate to impact and stir the molten bath and a solid-liquid interface. The coupled energy field makes up defects that a single inductance temperature field has no stirring effect to the molten bath and a single ultrasonic wave field which is short in action time to the molten bath is not obvious in effect. Induction heating plays a preheating and slow cooling role to reduce a temperature gradient and to reduce a thermal stress. The temperature field improves the impacting and stirring efficiency to the molten bath effectively by alleviating the solidification rate of the molten bath. The coupled energy field can reduce defects of cracks and pores, so that the mechanical properties of a metal materialformed part are improved.

The invention discloses a single-shaft mortar and high-viscosity fluid stirrer for an axial turbulent flow pattern multi-wire cutting machine, comprising a stirring shaft, a stirring assembly and a driving mechanism, wherein the stirring assembly comprises impellers and short flow diversion tubes, the impellers are used for driving a material to move up or down in an axial and spiral mode along the inner wall of a pot body of a stirring pot, the short flow diversion tubes are used for restricting the material flow direction to an axial movement along the axis of the stirring shaft when the material moves up or down in the axial and spiral mode, the impellers and the short flow division tubes are assembled into the stirring assembly which drives the material needed to be mixed and stirred to do an axial turbulent flow motion during stirring, the impellers are coaxially installed at the bottom end of the stirring shaft, the short flow division tubes are coaxially and fixedly sleeved at the outer sides of the impellers, and the stirring speed of the stirring shaft is 600-1500rmp. The single-shaft mortar and high-viscosity fluid stirrer has the advantages of simplicity in structure, high stirring capacity, small shearing force, high dispersing power and high effect, and can be used for solving the problem that silicon carbide is broken due to the shearing force during the high-speed stirring of various traditional stirrers. Moreover, a stuck phenomenon is difficult to generate.

The invention discloses an intelligent dynamic compaction machine. The intelligent dynamic compaction machine comprises a loader and a compaction mechanism connected with the loader, wherein a loader is provided with a fuel tank, a fuel pump and a radiator connected with the fuel tank, and an engine connected with the fuel pump; the compaction mechanism is provided with a frame, a fuel cylinder support plate connected with the frame and a fuel cylinder connected with the fuel cylinder support plate, a movable pulley is connected with the top of a piston rod of the fuel cylinder, a soft connector is wound on the movable pulley, one end of the soft connector is fixedly connected with the frame, the other end of the soft connector is connected with a compaction hammer; a compaction operation condition detection system is arranged on the frame, and the loader is furthermore provided with a hydraulic system connected with the fuel pump and an intelligent control system connected with the compaction operation condition detection system and the hydraulic system. The intelligent dynamic compaction machine has characteristics of reasonable design, convenience for use and operation, capability of intelligently continuously compacting, relatively large compaction powder, large compaction thickness and compaction infection depth, high intelligent degree, complete function, stability and reliability in operation, strong practicability and high popularization and application value.

The invention discloses an air conditioner unit mode switching control method and device and an air conditioner system. The air conditioner unit mode switching control method comprises the following steps that after an air conditioner unit runs for first preset time under the current running mode, the number of needed refrigeration compressors and the number of needed hot water compressors are judged; the next running mode of the air conditioner unit is obtained according to the number of the needed refrigeration compressors and the number of the needed hot water compressors; whether the next running mode is the same as the current running mode of the air conditioner unit or not is judged; if yes, the air conditioner unit is controlled to continue to run with the current running mode; if not, the air conditioner unit is controlled to be turned off for second preset time under the current running mode, and the next running mode is executed. By means of the method, the running modes of the air conditioner unit can be automatically switched, the corresponding running modes are started according to the needs, the actual using requirements of a user can be met better, the temperature set by the user can be reached more quickly, and the heat recycling efficiency is improved by judging the number of the needed compressors of the system while the air conditioner unit runs.

The invention discloses a network traffic prediction method and device, and the method comprises the steps: enabling the prediction device to obtain a prediction network flow sequence of a second timeperiod after a first time period according to all prediction models pre-stored in a historical network flow sequence training model library of exit gateway equipment in a first time period; and updating the prediction model of at least one sub-time period according to the actual network flow of at least one sub-time period in the second time period of which the network flow error value is greaterthan the preset threshold when judging that the predicted network flow sequence does not meet the expected target based on a comparison result between the actual network flow sequence in the second time period and the predicted network flow sequence. Through the mode, the prediction device can train the prediction model corresponding to the sub-time period according to the historical network flowcorresponding to different sub-time periods, so the accuracy of predicting the network flow of exit gateway equipment by the prediction device can be improved, and the actual use requirements of users and operators are met.

The invention provides a shared stage management system. The system comprises multiple mobile stages, a user terminal and a management server, wherein each of the mobile stages is provided with a first communication module and a positioning module, and each mobile stage acquires location information based on the positioning module arranged on the same mobile stage and uploads the acquired location information based on the first communication module arranged on the same mobile stage; the user terminal comprises a second communication module, and the user terminal sends an appointment request for using the mobile stages based on the second communication module; and the management server comprises an information management subsystem and an appointment management subsystem, the information management subsystem is used for managing each mobile stage according to the location information uploaded by the corresponding mobile stage, and the appointment management subsystem is used for receiving the appointment request sent by the user terminal, responding to the appointment request, selecting a target mobile stage from the mobile stages and pushing authorization information of using the target mobile stage to the user terminal.

The invention discloses a UDP (User Datagram Protocol) based matchable strategy data transmission method. Strategies such as the message transmission mode, the message compression strategy, the message retransmission times, the message timeout, the single package sending length, the sending window number and the active message delay which are required by the transmission are abstracted to form a strategy configuration file and the strategy information is read from the strategy configuration file and the strategy configuration is performed before the data transmission. When the used network transmission channel environment is changed, a user does not need to modify software codes again and only needs to modify part of the strategies in the strategy configuration file to meet the actual use demand, the data transmission can adapt to bandwidth and narrow-band channels and stable and high-delay channels, the point-to-point and point-to-multipoint data transmission can be implemented, and the software use is flexible and simple due to the facts that only a transmission strategy of a sending end need to be modified and the automatic strategy matching is achieved through a receiving end.

The invention discloses a controlled wedge block type bidirectional overrunning clutch. The controlled wedge block type bidirectional overrunning clutch comprises an outer ring, an inner ring, a plurality of anticlockwise wedge blocks located between the outer ring and the inner ring, a plurality of clockwise wedge blocks located between the outer ring and the inner ring, a holder which is located between the outer ring and the inner ring and used for holding the anticlockwise wedge blocks and the clockwise wedge blocks, and a control panel used for controlling the anticlockwise wedge blocks and the clockwise wedge blocks to rotate. Each wedge block in the anticlockwise wedge blocks and the clockwise wedge blocks is provided with a first working face and a second working face. The first working faces of the anticlockwise wedge blocks and the first working faces of the clockwise wedge blocks make contact with the working face of the outer ring permanently, and the second working faces of the anticlockwise wedge blocks and the second working faces of the clockwise wedge blocks can make contact with or leave the working face of the inner ring through rotation of the control panel. The overrunning clutch disclosed by the invention is good in universality and controllable in program.

The invention provides a method and an apparatus for measuring solubility of a refrigerant in refrigerant oil. The apparatus comprises equilibrium still, a refrigerant injection system, a circulatory system, a temperature-control system, a densitometer, and a temperature and pressure measuring system. Compared with the prior art, the method and the apparatus of the invention are easily realized, more important, by measuring the liquid density in the equilibrium still and other general parameters as well as employing relative algorithm which is different with the algorithm in the prior art, solubility of the refrigerant oil is accurately calculated; in addition, the circulatory system is employed for introducing the liquid in the equilibrium still from an outlet of the equilibrium still to an inlet of the equilibrium still, mixing and dissolving of the refrigerant and the refrigerant oil are accelerated, and the gas-liquid phase balance can be reached in a faster mode. The method and the apparatus of the invention are more suitable for the wider scope and pressure scope, which basically and completely satisfy the requirement of practical usage.

The invention discloses a voice scoring method and device, a computer device and a storage medium. The method comprises the following steps of if a matching degree measurement request is received, randomly selecting a text sentence as a target text sentence; generating input prompt information according to the target text sentence in order to prompt a user for voice information corresponding to the target text sentence; if the voice information input by the user according to the input prompt information is received, converting the voice information into first pinyin information through a preset voice conversion model; converting the target text sentence into second pinyin information through a preset text conversion model; calculating the matching degree between the first pinyin information and the second pinyin information according to a preset matching degree calculation model to obtain a voice score of the user. On the basis of a voice processing technology, the voice score of the user is obtained through calculation, that is to say that the matching degree between the voice information input by the user and mandarin can be obtained accurately, and the actual use demand of the user is met.

The invention discloses a hot air type asphalt pavement heating device for thermal regeneration of an old asphalt pavement, which comprises a chassis truck, wherein a hot air generating device is arranged on the chassis truck, and comprises an air heating furnace for heating air to generate hot air, and a bottomless hot air hood is movably arranged below the chassis chuck; a first air outlet holefor conveying the hot air to the ground is formed in the hot air hood, and the air heating furnace supplies the hot air to the first air outlet hole through a hot air conveying pipe; the hot air hoodis peripherally provided with an air shield felt which may be in contact with the ground, and the hot air hood is connected to the air heating furnace through a hot air recovery pipe. The hot air hoodforming a relatively closed space with the pavement is arranged at the bottom of the heating device provided by the invention, and after the hot air generated by the heating device acts on the ground, the hot air can be recovered by the hot air hood, and supplied to the air heating furnace to be reused, thereby effectively improving the utilization efficiency of the hot air and saving energy.

The invention proposes a high-precision self-resetting probe-type displacement measurement device and a measurement method. The measurement device comprises a bottom part support unit, a linear motion unit, a linear drive unit and a top part connection unit. The linear motion unit and the linear drive unit are mounted between the bottom part support unit and the top part connection unit in parallel and opposite. The bottom part support unit and the top part connection unit are arranged in parallel. The linear drive unit and the linear motion unit are connected to control the probe in the linear motion unit to vertically move upwards and downwards so as to realize the automatic measurement and self-resetting. The linear motion unit further comprises a displacement sensor to measure the displacement amount of the probe in the vertical direction. According the method, the face-to-face working manner of the linear motion unit and the linear drive unit is utilized for the contact type measurement. With the method, high-precision self-resetting automatic measurement function can be realized. The measurement method is simple and convenient, ensures relatively high stability and reliability, shortens the detection time, increases the measurement efficiency and guarantees the measurement accuracy.

The invention relates to a control method of an LED public lighting system, which is characterized in that according to a use condition of the LED public lighting system, when the LED public lighting system has high use efficiency, high power is output, and when the LED public lighting system has low use efficiency, power is reduced step by step for controlling to form an energy conservation power supply timetable in which the use conditions of the LED public light system correspond to stepped power value through that a PWM mode is used for controlling the LED lighting system.