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44results about How to "Easy and flexible control" patented technology

Full variable valve engine and control method thereof

The invention relates to a full variable valve engine which comprises an air cylinder with an air inlet channel and an exhaust channel. A piston is arranged in the air cylinder. The bottom end of the piston is connected with a crank-link mechanism. A sparking plug is arranged in the air cylinder. A throttle valve and an oil sprayer are arranged on the air inlet channel. A tail gas processing unit is arranged on the exhaust channel. Full variable valve mechanisms are arranged at the communication portions of the air inlet channel, the exhaust channel and the air cylinder. An EGR channel with a cooler is arranged between the air inlet channel and the exhaust channel in a connecting mode. An EGR valve is arranged on the EGR channel. The engine further comprises an ECU control unit which can control the spark plug, the oil sprayer, the EGR valve and the full variable valve structures to make the engine operate. The invention further relates to a full variable valve engine control method. The shortcoming of an existing electric control hydraulic and electric control magnetic force driving mode can be overcome, the engine can be controlled to operate under various combustion modes, and the fuel economy and the emission performance of the engine are further improved.
Owner:长城汽车股份有限公司平湖分公司

Shield tunnel overhead line system anchor bolt hole positioning device and application thereof

The invention belongs to application of positioning equipment in subway tunnel construction, and particularly relates to a shield tunnel overhead line system anchor bolt hole positioning device and application thereof. The positioning device comprises a triangular bracket and a laser ranging sensor; the top of the triangular bracket and the lower surface of the base plate adopt a movable ball matching mechanism with a locking device; rotating plates are arranged over a base plate at intervals and assembled with the base plate through shafts in a rotating mode. A first motor on a base plate drives a shaft to rotate through a gear pair, an encoder and a gear pair are assembled in a meshed mode, a second motor is fixed to a rotating plate, a swing rod is fixed to an output shaft of the secondmotor, the laser ranging sensor and a second inclination angle sensor are assembled on the swing rod, and a first inclination angle sensor is arranged on the rotating plate; a control device receivessignals sent by the first inclination angle sensor, the second inclination angle sensor, the encoder and the laser ranging sensor and processes and controls starting, stopping and rotating angles ofthe first motor and the second motor. The method effectively solves a problem that a conventional positioning method is tedious and complex, is accurate in positioning, is simple in device, and is convenient for measurement.
Owner:CHINA CONSTR IND & ENERGY ENG GRP CO LTD +2

Chain-transmission weeding scarifier

Disclosed is a chain-transmission weeding scarifier. A rear chain wheel is installed on a clutch which is installed at one end of a power device, a fixing frame with a cavity is mounted at the front end of a rack, the rear chain wheel is sleeved in the cavity of the rear end of the fixing frame, a front fork is arranged at the front end of the fixing frame, a rotary shaft is mounted in bearings at two ends of the front fork, a front chain wheel is mounted in the middle of the rotary shaft, the front end of the fixing frame is sleeved on the front chain wheel, and a chain is sleeved on the front chain wheel and the rear chain wheel. A plurality of cutter discs are fixed on the rotary shaft on two sides of the front chain wheel, and bent weeding cutters and winding grass cut-off cutters are mounted on the cutter discs. A push handle is mounted at the rear end of a rack and a controller of the power device is mounted on a handle shank of the push handle. An adjusting bar is installed below the rack, and wheels are mounted on the adjusting bar. During usage, an operator holds the handle shank and a handle by hands, weeding cutters below the rack are attached to the ground and can be pushed into lower portions of low fruit tree branches for weeding and soil scarifying conveniently. The chain-transmission weeding scarifier is ingenious in structure, low in weight, small in size and wide in applicable range.
Owner:TONGHAI DASEN IND & TRADE

Beam forming method and system of microphone voice signals of hearing aid device, and hearing aid device

The invention belongs to the technical field of signal processing, and provides a beam forming method and system of microphone voice signals of a hearing aid device, and the hearing aid device. The invention aims at solving the following problems: spatial orientation information picked up by a double-microphone voice signal beam forming method used on the existing hearing aid device is limited, the spatial resolution is relatively low, and the number of formed pole figures is small, such that when the directional noise is serious, the beams cannot be controlled conveniently and flexibly to form proper pole figures. According to the beam forming method and system provided by the invention, double miniature microphones are used, each miniature microphone comprises two sound pipes with opposite directions in the space to pick up voice signals, thereby improving the spatial resolution of voice pickup and the spatial orientation information of voice. More importantly, weight parameters and adjustable inclination angle parameters of signals are processed, so that the number of the pole figures corresponding to the final output voice signals is greatly increased, convenient and flexible control is realized, proper pole figures are formed, and the speech recognition rate of a user of the hearing aid device is improved.
Owner:SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY

Novel sitting type easy operation shifting machine

InactiveCN105496690AEasy rideEasy to ride, easy to move between indoor facilitiesNursing bedsAmbulance serviceHydraulic cylinderControl engineering
The invention discloses a novel sitting type easy operation shifting machine, which comprises a car body, a direction handle, an oil hydraulic cylinder, a middle shaft, a lever and a bearing rail, wherein an oil hydraulic cylinder lower support lug is welded on the lower end of a car pipe which is arranged on the middle-lower portion of the direction handle, the lower portion of the oil hydraulic cylinder is arranged in the oil hydraulic cylinder lower support lug, the top portion of the oil hydraulic cylinder and the oil hydraulic cylinder upper support lug which is arranged on a transverse pressing angle steel are fixedly connected, a middle shaft transversely passes through the middle end of the two ends of a lower car pipe of the direction handle of the car body, a left and a right levers are arranged in the left and the right sides of an upper car pipe of the middle shaft, the two ends of the transverse pressing angle steel and the rear ends of the left and the right levers are connected to be fastened ends, a left and a right bending front shoulder approach pipes are fastened in eyeholes of fixed ears which are arranged on the front portion ends of the left and the right levers in front of a transverse pipe, the left and the right levers are controlled through a rocker arranged on the oil hydraulic cylinder to go up and down, and a telescopic bearing rail with a seat is arranged on a bearing surface which is arranged on the lower portion of the car body. The novel sitting type easy operation shifting machine enables nurses to conveniently operate, is used for disabled patients with limited lower limbs, can conveniently move and pass through between various indoor facilities through the car body which uses a short and narrow micro design, is simple in operation, low in price and strong in practicability, and has market popularization prospect.
Owner:甄华伟

Tool change device with vertical and horizontal conversion function and tool change method thereof

PendingCN109176106AWith vertical and horizontal conversion functionEasy and flexible controlPositioning apparatusMetal-working holdersHydraulic cylinderGear wheel
The invention discloses a tool change device with a vertical and horizontal conversion function and a tool change method thereof. The technical scheme of the tool change device and method is that thetool change device with the vertical and horizontal conversion function includes a hydraulic control system device; an open gear retarding mechanism is connected with a workbench by bolting; the workbench and a linear guide are connected by bolting; the linear guide and a plunger hydraulic cylinder are correspondingly and fixedly connected with the base by bolting; the plunger hydraulic cylinder and the workbench are connected through flat keys and slotted countersunk flat head screws; the front end of a crankshaft is connected with a drive open gear retarding mechanism; the tail end of the crankshaft is connected with a rotary hydraulic cylinder by bolting; the rotary hydraulic cylinder and a connecting plate are connected by bolting; mechanical arms include the first mechanical arm and the second mechanical arm; and the first and second mechanical arms present a spatial distribution of 90 degrees. The tool change device meets the needs of the current large five-axis machining center,and the tool change method has simple processes and high operability, and can fit with the tool change device to realize the tool change function and the vertical and horizontal conversion function.
Owner:SHAANXI UNIV OF SCI & TECH

Foaming pipe extrusion die capable of adjusting flow rate of feeding material

The invention relates to a foaming pipe extrusion die capable of adjusting the flow rate of a feeding material. The foaming pipe extrusion die comprises a tubular extrusion die which is transversely extended and a columnar core die which is arranged inside the extrusion die, wherein a tubular gap between the extrusion die and the core die becomes a slurry channel, a central spindle which is transversely extended is arranged on an axis of the core die, and a columnar supporting bar for connecting the central spindle with the outer wall of the extrusion die is arranged on the axial middle part. The foaming pipe extrusion die is characterized in that the transverse two ends of the foaming pipe extrusion die are an inlet end and an outlet end, an adjuster of which head of in a cone shape and an axial distance relative to the core die can be adjusted, is arranged on the core die at the inlet end, the adjuster is connected with the core die by bolts and the head of the core die is towards outside. According to the foaming pipe extrusion die, the adjuster of which the axial distance can be adjusted is arranged at the inlet end of the extrusion die, the outlet end flow rate of a channel inside a feeding die for matching use is changed, so that the flexible control of an operator is convenient, and the quality stability of the foaming pipe is guaranteed. An elastic sealing spacer can be arranged between the adjuster and the core die inlet end of the die, so that the sealing performance of the slurry channel can be guaranteed and metal connection components are protected.
Owner:昆山圣源机械有限公司

Secondary access system for power grid

The invention provides a secondary access system for a power grid, comprising a power plant grid system, wherein the power plant grid system is connected with a secondary access system; the secondaryaccess system comprises a telecontrol system terminal; the telecontrol system terminal is electrically connected with a 30 MW unit and a 110 KV line; a collector is connected to the telecontrol systemterminal; a security gateway is connected to the collector; a concentrator is connected to the security gateway; an optical fiber communication network is connected to the concentrator; a communication interface machine is connected to the optical fiber communication network; a data bus is connected to the communication interface machine; a master server is connected to the data bus; an externalauthority control module and an internal authority control module are connected to the master server; a grid user is connected to the external authority control module; a control service station is connected to the internal authority control module; the control service station is connected with a power system; and an identity authentication module is connected to the concentrator. The secondary access system for the power grid in the invention has the advantages of high security and flexible and convenient operation.
Owner:国电中自(合肥)电气科技有限公司

Raft foundation bolt embedded structure and installation method

The invention discloses a raft foundation bolt embedded structure and method. The method comprises the following steps that preparation is carried out, specifically, construction preparation is carried out according to construction drawings; concrete cushion pouring is carried out, specifically, cushion pouring is carried out after a bolt bracket fixing iron piece is arranged; a bolt bracket is installed, the bolt bracket is fixed to the fixing iron piece, and the fixing iron piece is used as a supporting point of the bolt bracket; drilling is carried out, specifically, firstly the installation position of a bolt is determined, and drilling is carried out at the installation position of the bolt; and the bolt is installed, specifically, the bolt is installed at the installation position ofthe bolt, a nut is put on, and the nut is spot welded to a box iron fixed frame after the position of the center line of the bolt is adjusted. According to the raft foundation bolt embedded structureand method, according to the foundation size and construction progress, integral planning design of the bracket is carried out in advance, modular construction is carried out, and the construction efficiency is improved. A fixed system is convenient and firm to build, welding is required most and special technologies are not required, and the construction difficulty is reduced. Positioning of theposition of the bolt is simple and accurate, and control of the scale height of the bolt is light and flexible.
Owner:CHINA MCC5 GROUP CORP

Method for preparing high-strength porcelain insulator blank by agitating type sanding

The invention relates to a method for preparing high-strength porcelain insulator blank by agitating type sanding, belonging to a continuous grinding process, and comprising the steps of high efficiency quick grinding by agitating type sanding, hydrocyclone separation and regrinding of coarse particles. In the invention, according to the requirements for hardness and fineness of raw materials, high efficiency quick grinding is carried out by agitating type sanding, thereby greatly improving the grinding efficiency, shortening the grinding time, reducing the scope of particle size distribution, and reducing the energy consumption of grinding. The hydrocyclone separation technology is adopted, particles achieving the fineness requirement are separated in time, and coarse particles which do not achieve the fineness requirement are returned to be reground, thereby preventing the raw materials from being overground, and eliminating the harmful coarse particles. The invention is suitable for grinding a single raw material and mixture of a plurality of raw materials, can effectively reduce the preparation cost of the high-strength porcelain insulator blank, and improves the mechanical strength, electrical insulation strength and operation reliability in a high-voltage fence of porcelain insulator products.
Owner:HUNAN UNIV

Method for preparing high-strength porcelain insulator blank by agitating type sanding

The invention relates to a method for preparing high-strength porcelain insulator blank by agitating type sanding, belonging to a continuous grinding process, and comprising the steps of high efficiency quick grinding by agitating type sanding, hydrocyclone separation and regrinding of coarse particles. In the invention, according to the requirements for hardness and fineness of raw materials, high efficiency quick grinding is carried out by agitating type sanding, thereby greatly improving the grinding efficiency, shortening the grinding time, reducing the scope of particle size distribution, and reducing the energy consumption of grinding. The hydrocyclone separation technology is adopted, particles achieving the fineness requirement are separated in time, and coarse particles which do not achieve the fineness requirement are returned to be reground, thereby preventing the raw materials from being overground, and eliminating the harmful coarse particles. The invention is suitable for grinding a single raw material and mixture of a plurality of raw materials, can effectively reduce the preparation cost of the high-strength porcelain insulator blank, and improves the mechanical strength, electrical insulation strength and operation reliability in a high-voltage fence of porcelain insulator products.
Owner:HUNAN UNIV

Atmospheric particulate sampling pipeline comprehensive quality control system

The invention relates to an atmospheric particulate sampling pipeline comprehensive quality control system. According to the technical scheme, the atmospheric particulate sampling pipeline comprehensive quality control system comprises a particulate particle-size cutting head positioned outdoors, an analysis instrument positioned indoors and a first gas path; the inlet end of the first gas path isconnected with the particulate particle-size cutting head; the outlet end of the first gas path is connected with the analysis instrument; an outdoor pipeline part of the first gas path is also provided with an outdoor pipeline temperature probe; an indoor pipeline part of the first gas path is sequentially provided with a dynamic heat preservation device and an electrical control ball valve in agas inlet direction; an indoor pipeline temperature probe is also arranged on a first gas path pipeline at which the dynamic heat preservation device is positioned; the output ends of both the outdoor pipeline temperature probe and the indoor pipeline temperature probe are connected with the input end of a system control chip; the output end of the system control chip is respectively connected with the dynamic heat preservation device and the electrical control ball valve. The atmospheric particulate sampling pipeline comprehensive quality control system is simple in structure, easy to transform, can effectively keep a temperature of sampled gas constant, has a zero correction function, and is high in measurement accuracy, flexible and reliable.
Owner:JINAN UNIVERSITY +1

Pneumatic shield gate gas path switching device

The invention discloses a pneumatic shield gate gas path switching device, and relates to the technical field of pneumatic shield gates. The pneumatic shield gate gas path switching device comprises an air inlet pipeline, an inflation pipeline, an exhaust pipeline and a rack, wherein an air inlet valve assembly is installed on one side below the air inlet pipeline; the inflation pipeline is installed above the top end of the air inlet pipeline; the inflation valve assembly is installed on the left side of the inflation pipeline; the exhaust pipeline is installed below the inflation pipeline; an exhaust valve assembly is arranged on the left side of the exhaust pipeline; a main adjusting inflation manual ball valve is arranged below one side, close to the air inlet pipeline, of the inflation pipeline; and a main adjusting inflation sliding valve is arranged on one side of the main adjusting inflation manual ball valve. The pneumatic shield gate gas path switching device has the beneficial effects that by arranging double-loop switching, the device can meet the fast and high-precision control requirements on a gate; by arranging manual automatic switching, the control function of thegate is enriched, and the safety and the reliability are higher; and by being provided with various types of air valves, the safety of system hardware is improved.
Owner:湖南江河能源科技股份有限公司

Internal comprehensive power supply system of large-scale coal-electricity integrated power station

The invention discloses an internal comprehensive power supply system of a large-scale coal-electricity integrated power station. The internal comprehensive power supply system comprises two units anda half-wiring high-voltage power distribution device, and a main transformer of each unit is connected with the half-wiring high-voltage power distribution device through a conductor. The internal comprehensive power supply system is characterized in that a generator outlet circuit breaker is arranged at the outlet of each unit generator in the coal-electricity integrated power plant, an on-loadvoltage regulation high-voltage splitting plant transformer and a coal mine power supply on-load voltage regulation transformer are arranged at the side of the power plant, and a high-voltage side power supply is taken from the outlet of the generator. The medium-voltage station service power bus sections of the two units of the power plant are interconnected, two medium-voltage power bus sectionsin a coal mine are interconnected, and power supplies are standby for each other. According to the invention, the high-voltage station service power wiring of the power plant and the coal mine is greatly simplified, the flexibility of the electrical operation of the power plant and the coal mine is improved, and the occupied area of the overhead lines and devices is saved.
Owner:NORTHEAST ELECTRIC POWER DESIGN INST CO LTD OF CHINA POWER ENG CONSULTING GRP

Fully variable valve engine and its control method

The invention relates to a full variable valve engine which comprises an air cylinder with an air inlet channel and an exhaust channel. A piston is arranged in the air cylinder. The bottom end of the piston is connected with a crank-link mechanism. A sparking plug is arranged in the air cylinder. A throttle valve and an oil sprayer are arranged on the air inlet channel. A tail gas processing unit is arranged on the exhaust channel. Full variable valve mechanisms are arranged at the communication portions of the air inlet channel, the exhaust channel and the air cylinder. An EGR channel with a cooler is arranged between the air inlet channel and the exhaust channel in a connecting mode. An EGR valve is arranged on the EGR channel. The engine further comprises an ECU control unit which can control the spark plug, the oil sprayer, the EGR valve and the full variable valve structures to make the engine operate. The invention further relates to a full variable valve engine control method. The shortcoming of an existing electric control hydraulic and electric control magnetic force driving mode can be overcome, the engine can be controlled to operate under various combustion modes, and the fuel economy and the emission performance of the engine are further improved.
Owner:长城汽车股份有限公司平湖分公司

Water distribution device capable of intelligently controlling pH and application thereof

The invention belongs to the technical field of food processing equipment, and relates to a water distribution device capable of intelligently controlling pH and application of the water distribution device in sterile rice production. The device comprises a water tank installed on a rack, and a cover body is arranged on the water tank; a stirring device and a pH sensor are arranged in the water tank; n branch pipelines are arranged on the cover body, and electromagnetic valves are arranged on the branch pipelines; one end of the branch pipeline penetrates through the cover body, and the other end is correspondingly connected with an acid liquor supply tank and a pure water supply tank through a metering pump; n is a positive integer greater than or equal to 2; a quantitative liquid taking device is communicated below the water tank; and the device further comprises a servo motor, wherein the servo motor, the stirring device, the metering pump, the electromagnetic valve, the pH sensor and the quantitative liquid taking device are all electrically connected with a PID control system. The pH value of the solution can be monitored, regulated and controlled on line in real time; an aqueous solution with proper pH is added in the rice water distribution process; and operation is easy and convenient, and meanwhile good quality and taste of rice are guaranteed.
Owner:JIANGSU UNIV

Hearing aid device microphone voice signal beamforming method, system and hearing aid device

The invention belongs to the technical field of signal processing, and provides a beam forming method and system of microphone voice signals of a hearing aid device, and the hearing aid device. The invention aims at solving the following problems: spatial orientation information picked up by a double-microphone voice signal beam forming method used on the existing hearing aid device is limited, the spatial resolution is relatively low, and the number of formed pole figures is small, such that when the directional noise is serious, the beams cannot be controlled conveniently and flexibly to form proper pole figures. According to the beam forming method and system provided by the invention, double miniature microphones are used, each miniature microphone comprises two sound pipes with opposite directions in the space to pick up voice signals, thereby improving the spatial resolution of voice pickup and the spatial orientation information of voice. More importantly, weight parameters and adjustable inclination angle parameters of signals are processed, so that the number of the pole figures corresponding to the final output voice signals is greatly increased, convenient and flexible control is realized, proper pole figures are formed, and the speech recognition rate of a user of the hearing aid device is improved.
Owner:SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY

A foam tube extrusion die with adjustable feed flow rate

The invention relates to a foaming pipe extrusion die capable of adjusting the flow rate of a feeding material. The foaming pipe extrusion die comprises a tubular extrusion die which is transversely extended and a columnar core die which is arranged inside the extrusion die, wherein a tubular gap between the extrusion die and the core die becomes a slurry channel, a central spindle which is transversely extended is arranged on an axis of the core die, and a columnar supporting bar for connecting the central spindle with the outer wall of the extrusion die is arranged on the axial middle part. The foaming pipe extrusion die is characterized in that the transverse two ends of the foaming pipe extrusion die are an inlet end and an outlet end, an adjuster of which head of in a cone shape and an axial distance relative to the core die can be adjusted, is arranged on the core die at the inlet end, the adjuster is connected with the core die by bolts and the head of the core die is towards outside. According to the foaming pipe extrusion die, the adjuster of which the axial distance can be adjusted is arranged at the inlet end of the extrusion die, the outlet end flow rate of a channel inside a feeding die for matching use is changed, so that the flexible control of an operator is convenient, and the quality stability of the foaming pipe is guaranteed. An elastic sealing spacer can be arranged between the adjuster and the core die inlet end of the die, so that the sealing performance of the slurry channel can be guaranteed and metal connection components are protected.
Owner:昆山圣源机械有限公司
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