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46results about How to "Easy to fine-tune" patented technology
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Butterfly-shaped semiconductor laser automatic coupling packaging device
ActiveCN109521536AHigh degree of automationIncrease productivityCoupling light guidesProduction lineCoupling
The invention discloses a butterfly-shaped semiconductor laser automatic coupling packaging device and relates to the automatic coupling packing field of an electronic device. The automatic coupling packaging device includes a column, a cross beam, and a fiber clamp, a lens clamp mechanism, a lower clamp device and a material disc mechanism arranged on a base, and a laser power meter, wherein thefiber clamp, the lens clamp mechanism and a fiber automatic angle adjusting welding device can be adjusted in position to realize accurate coupling and packaging of a butterfly-shaped semiconductor laser. The device is advantaged in that the structure design is reasonable, the whole subsequent operation from coupling, alignment and packaging can be automatically completed, compared with a traditional hand-operated production line, advantages of high automatic degree, simple and convenient operation, high production efficiency, low production cost and stable product quality are achieved.
Owner:CENT SOUTH UNIV
Method for estimating noise power spectrum and voice activity
The invention relates to a method for estimating the noise power spectrum and the voice activity. According to the method, the appear probability of a voice on a frequency sub band and power spectrum information of noise can be finally deduced according to the time sequence relevance of a sequential hidden markov model (SHMM) description language based on first-order regression on each frequency component. The method comprises the following steps of: 1) extracting a logarithmic amplitude spectrum envelop for a voice signal on each frequency component, and constructing a corresponding binary hidden markov model, wherein each state is represented by Gaussian distribution; 2) for a field of voice data, setting M frames of caches, storing the previous M frames of input signals into the caches, extracting M frames of logarithmic amplitude spectrums from the caches, and constructing an initialization model by adopting a maximum likelihood estimation algorithm; and 3) after the initialization model lambdaM is obtained, starting from the (M+1)th frame, gradually updating the HMM of each frequency band by adopting an incremental learning method, and sequentially performing recurrence to obtain a noise value and the appear probability of a voice signal.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI +1
Automatic coupling package method of butterfly-shaped semiconductor laser
ActiveCN109752805AHigh degree of automationIncrease productivityCoupling light guidesProduction lineCoupling
The invention discloses an automatic coupling package method of a butterfly-shaped semiconductor laser, and relates to the field of automatic coupling package of electronic devices. The automatic coupling package method comprises the steps of feeding-onto-machine of accessories, coupling alignment, welding and the like. An automatic coupling package device realizing the automatic coupling packagemethod comprises vertical columns, a transverse beam, an optical fiber clamp, a lens clamp mechanism, a lower clamp device, a material disc mechanism, a laser power meter and the like, wherein the optical fiber clamp, the lens clamp mechanism, the lower clamp device, the material disc mechanism and the laser power meter are arranged on a base; and the positions of the optical fiber clamp, the lensclamp mechanism and an optical fiber automatic angle-adjusting welding device can be adjusted so as to realize accurate coupling package of the butterfly-shaped semiconductor laser. The automatic coupling package method is high in automation degree and high in package efficiency; the coupling package device adopted by the automatic coupling package method is reasonable in structural design, the complete subsequent procedures from coupling alignment to package can be automatically completed, and compared with a traditional manual production line, the automatic coupling package device has the advantages of being easy and convenient to operate, low in production cost, stable in product quality and the like.
Owner:CENT SOUTH UNIV
Novel optical calibration equipment of radio-frequency simulated target antenna array
InactiveCN102494612AReduce the differenceEasy to fine-tuneUsing optical meansRadio frequencyImage acquisition
The invention discloses novel optical calibration equipment of a radio-frequency simulated target antenna array. The equipment is composed of a laser range-measurement system mounted on a rotary table, a video image acquisition system and a computer control and communication system, wherein the laser range-measurement system is used for measuring the distance between an antenna and the center of the rotary table; the video image acquisition system is used for obtaining an optical image of the antenna and converting the optical image into an electronic image; and the computer control and communication system is used for controlling the turning positioning of the rotary table, receiving the electronic image generated by the video image acquisition system and displaying the electronic image on a screen. Through adoption of the equipment provided by the invention, a mounting position and a spacing of a geometric center of each antenna surface meet design precision requirement, so that the difference in amplitude-phase characteristics among all paths of radiation signals of radiation interfaces of all antenna units is reduced and the fine adjustment of an electric characteristic becomes convenient so as to reach the consistency of electromechanical characteristics. Furthermore, through functions of voice communication and image transmission, workers can accurately obtain measured data and image information of the rotary table in time and the antenna can be conveniently and efficiently adjusted.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Assembled adjustable steel bar binding clamping fixture support
ActiveCN101890757AMeet the requirements of steel bindingEasy to adjustCeramic shaping apparatusSheet steelSteel bar
The invention discloses an assembled adjustable steel bar binding clamping fixture support which is characterized by taking a steel plate assembly pre-buried in a pier column at the bottom part as a mounting foundation; a support frame is fixedly mounted on the steel plate assembly through a bolt according to the shape of beam body steel bars; support rods are arranged on the support frame at intervals, the supporting height of the support rods on the support frame can be adjusted, and an end plate used for fixing and position-limiting of angle iron is arranged at the support end of each support rod. The assembled adjustable steel bar binding clamping fixture support can greatly improve the mounting speed of a steel bare binding clamping fixture, adjust the positioning precision of the binding clamping fixture with high efficiency, quickly realize the university among a plurality of beam types, be utilized repeatedly and realize energy conservation and emission reduction.
Owner:THE FIRST ENG CO LTD OF CTCE GRP
Composite membrane based on gelatin and amino acid, and method for cultivating limbal stem cells on membrane
ActiveCN107118552ASolid shapeGood biocompatibilitySkeletal/connective tissue cellsCell culture active agentsPolyethylene glycolAmino acid
The invention discloses a composite membrane based on gelatin and amino acid, and a method for cultivating limbal stem cells (LSCs) on the membrane. A preparation method of the composite membrane comprises the steps of preparing methacrylic anhydride gelatin (Gelma) by utilizing the gelatin, methacrylic anhydride, Dulbecco phosphate buffered saline (DPBS) and distilled water under a controlled condition, preparing poly(ethylene glycol) diacrylate (PEGDA) by utilizing polyethylene glycol (PEG), benzene, triethylamine, acryloyl chloride and glacial ether under a controlled condition, obtaining an unsaturated polymer (U-PEA) by utilizing polymerization of amino acid, diol and diacid under a controlled condition or modification of methacrylic anhydride, and finally preparing the composite membrane by utilizing a reaction product by the action of a photoinitiator. The composite membrane can serve as a matrix layer to support growth of the LSCs on the membrane. The method is very simple and convenient to operate, simple in condition and good in repeatability; a prepared product is reliable in performance; and industrialization is very easy to realize.
Owner:ZHONGSHAN OPHTHALMIC CENT SUN YAT SEN UNIV
Surveying instrument support for geographic information science
ActiveCN112856137AEasy to fine-tuneEasy to useStands/trestlesPhotovoltaic energy generationGeoinformaticsSurvey instrument
The invention discloses a surveying instrument support for geographic information science, and relates to the field of geographic information science. The surveying instrument support mainly aims to solve the problems that when an existing surveying instrument support is used, the surveying instrument support is approximately arranged over a control point, a leg support is inserted into the ground, then a surveying instrument laser is turned on for lower point alignment, the distance between the center of the surveying instrument support and a control point is checked through the laser, supporting legs are pulled out of soil to be adjusted, the positions of the supporting legs need to be adjusted many times in the process, and the operation process is tedious and inconvenient. The surveying instrument support for geographic information science comprises a supporting plate, three supporting rods are evenly installed on the supporting plate, the three supporting rods are all hinged to the supporting plate, two guide blocks are arranged on the inner sides of the supporting rods, fixing sleeves are installed at the bottoms of the supporting rods, and fixing screws are arranged on the fixing sleeves. According to the design, three servo motors are used for controlling horizontal movement of a mounting plate, repeated equipment mounting and fixing are avoided, operation is easy, and large-scale popularization is facilitated.
Owner:广州盛鑫信息技术有限公司
Formwork support for cast-in-place concrete plate
InactiveCN106401177AReduce construction workloadReduce dosageForms/shuttering/falseworksSupporting systemPre stress
The invention discloses a formwork support for a cast-in-place concrete plate and relates to formwork engineering of concrete plates. The construction workload of a support system is reduced by adopting a matching tool type bent frame system taking a hybrid structure convenient to assemble in site and locally disassemble as a main framework as the formwork support, hinging combined parts of the hybrid structure by utilizing pre-stress by virtue of a connection structure of a semi-hinge groove, a fixed hinge shaft and a movable sleeve, finely adjusting the lifting of a main structure by using a mechanism frame foundation and adopting the application of strong-stiffness and high-strength support of the hybrid structure to a strong-stiffness large edge. The formwork support is simple in structure, simple and convenient in construction and capable of improving the supporting effect, greatly shortening the operation hour and the time limit of a subentry project and reducing the usage amount of a member material. The formwork support supports local support and early removal of a formwork, and the turnover rates of the formwork and a supporting member are increased. The working reliability of the support system is high, and the fine adjustment for the lifting of the main structure, realized by using the frame foundation, is simple in operation and precise in size, so that the construction quality and safety are ensured.
Owner:胡彦彬
Fine tuning horizon instrument of observation mirror
InactiveCN102200631AEasy to fine-tuneTransmission process is reliableTelescopesEngineeringRotary stage
The invention provides a fine tuning horizon instrument of an observation mirror, comprising a polar axis seat and a horizontal adjusting device and a pitch angle adjusting device arranged below the polar axis seat, wherein the horizontal adjusting device comprises a longitude worm wheel, a longitude worm, a horizontal adjusting hand wheel and a rotating platform which are horizontally arranged; the rotating platform is fixed on the longitude worm wheel and arranged coaxially with the longitude worm wheel; the longitude worm wheel is in engaged transmission with the longitude worm; the horizontal adjusting hand wheel is fixedly connected with the longitude worm; the pitch angle adjusting device comprises a horizontally arranged latitude worm, a vertically arranged latitude worm wheel, a friction rotating wheel tightly pressed on the end surface of the latitude worm wheel and a pitch adjusting hand wheel; the latitude worm is engaged transmission with the latitude worm wheel; the pitch adjusting hand wheel is fixedly connected with the latitude worm; the pitch angle adjusting device is mounted on the rotating shaft; and the polar axis seat is fixed on the friction rotating wheel. By using the fine tuning horizon instrument provided by the invention, both accuracy in location and convenience in use can be obtained.
Owner:FUDING YIXIONG OPTICS APP
Butterfly semiconductor laser device automatic coupling sealing optical fiber fixture
ActiveCN109683258AHigh degree of automationEasy to operateCoupling light guidesCoupling efficiencyEngineering
The invention discloses a butterfly semiconductor laser device automatic coupling sealing optical fiber fixture, and relates to the field of electronic component automatic coupling sealing. The optical filer fixture comprises an optical fiber fixture position adjusting device and fixture module, the fixture module is installed on the optical fiber fixture position adjusting device through an L-shaped switching plate, the fixture module comprises components of a fixture installing supporting frame, a fixture positioning seat, an angle adjusting mechanism, an optical fiber tail end fixture, an optical fiber metal sleeve tube end fixture which is suspended in front of the optical fiber tail end fixture and the like, and slit optical fiber placing holes which basically parallel to the longitudinal extending direction of the optical fiber tail end fixture are formed in the fixture installing supporting frame and the angular adjusting mechanism. The optical fiber fixture has the advantages that optical fibers can be conveniently placed and taken out, coarse tuning and fine tuning can be conveniently conducted to facilitate the alignment of optical fibers, the coupling efficiency can be greatly improved, and the production cost is reduced.
Owner:CENT SOUTH UNIV
Solar cell detecting and screening line
The invention discloses a solar cell detecting and screening line. According to the key of the technical scheme, the solar cell detecting and screening line comprises an EL detector, an LV detector and a frame body, the frame body is provided with a conveying mechanism and a sorting mechanism, the conveying mechanism comprises a containing frame for containing a plurality of stacked solar cells, afirst conveyer belt rotationally connected to the frame body and conveying the containing frame, a grabbing assembly for grabbing the solar cells conveyed by the first conveyer belt and a second conveyer belt which is rotationally connected to the frame body and used for conveying the solar cells to the EL detector and the LV detector, and the sorting mechanism comprises a sorting frame connectedto the frame body, a plurality of sorting assemblies arranged on the sorting frame and used for sorting the solar cells and an unqualified product receiving frame arranged on the frame body and located at the end, far away from the grabbing assembly, of the second conveyer belt. The solar cell detecting and screening line can automatically convey the solar cells to the EL detector and the LV detector for detection and conducts sorting and screening on the detected solar cells.
Owner:浙江瑞尚能源科技有限公司
Carousel seat switching system
InactiveCN108668059AAvoid wastingImprove ride comfort performanceTelevision system detailsImage enhancementMeasuring instrumentElectric power
The invention relates to a carousel seat switching system, comprising an air temperature measuring instrument, a shooting trigger device and a spherical camera, wherein the air temperature measuring instrument is used for measuring the air temperature of the lower position of a ceiling of a carousel, and the air temperature is output as the internal air temperature of the ceiling; the shooting trigger device is used for receiving the internal air temperature of the ceiling, sending a first trigger signal when the internal air temperature of the ceiling is outside a preset temperature range, and sending a second trigger signal when the internal air temperature of the ceiling is within the preset temperature range; and the spherical camera is arranged under the ceiling of the carousel, facestowards one of multiple small wooden horses for tourists to ride, is connected with the shooting trigger device, and is used for shooting a turntable scene by using an infrared image sensor when receiving the first trigger signal. According to the scheme of the invention, the waste of power resources of the carousel can be avoided.
Owner:张霞
Superconducting quantum circuit chip-level simulation method based on Comsol
PendingCN114528806AEasy to fine-tuneEasy to fixGeometric CADQuantum computersCapacitanceQuantum circuit
The invention relates to the field of superconducting quantum circuit simulation, and particularly discloses a Comsol-based superconducting quantum circuit chip-level simulation method, which comprises the following steps of: constructing a full-circuit model of a superconducting quantum circuit; wherein the full-circuit model comprises all circuit elements of the superconducting quantum circuit and a packaging environment; selecting a physical field and adding physical field boundaries and port conditions to the whole circuit model based on circuit parameters of a target circuit element needing to be simulated; mesh generation is carried out; finite element solution is executed, and frequency domain analysis is carried out; extracting required circuit parameters from the analysis result; wherein the circuit parameters comprise inductance parameters, capacitance parameters and frequency parameters. Compared with a model formed by splicing geometric figures in the prior art, the full-circuit model adopted by the invention is easier to finely adjust and correct, and the adopted multi-physics coupling analysis is closer to the real working environment of the superconducting quantum circuit, so that the simulation result is closer to the actual circuit parameters.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
Large-span asymmetric horseshoe-shaped multi-layer truss construction method
PendingCN113802694ARealize visual managementStrong construction quality traceabilityGirdersJoistsButt jointLong span
The invention discloses a large-span asymmetric horseshoe-shaped multi-layer truss construction method. A truss and a core tube are in butt joint through a cantilever bracket, the cantilever bracket is of a box-shaped structure, and the thickness of a web of an inward-extending cantilever bracket of the truss is different from that of a web of an outward-extending cantilever bracket of the core tube; the truss is assembled on the ground through a positioning jig frame, and the positioning jig frame is provided with a plurality of bearing units which are arranged in a scattered mode. A plurality of lifters mounted at the top of a steel tube column of the core tube are adopted to lift the truss integrally. When the truss is assembled, local fine adjustment is facilitated, precise positioning is achieved, and the assembling precision is improved conveniently; the pre-mounted inward-extending cantilever bracket is in butt joint with the outward-extending cantilever bracket on the core tube, effective measures are adopted for preventing interference, the field welding operation amount after lifting can be reduced, construction is facilitated, and the mounting quality is conveniently improved; a multi-point overall lifting method and effective measures are adopted to prevent deformation of the truss, butt joint errors are made up, and the mounting positioning efficiency and the mounting quality are greatly improved.
Owner:中建六局第一建设有限公司 +1
A method for automatic coupling and packaging of butterfly semiconductor lasers
ActiveCN109752805BHigh degree of automationIncrease productivityCoupling light guidesProduction lineOptical power meter
The invention discloses an automatic coupling package method of a butterfly-shaped semiconductor laser, and relates to the field of automatic coupling package of electronic devices. The automatic coupling package method comprises the steps of feeding-onto-machine of accessories, coupling alignment, welding and the like. An automatic coupling package device realizing the automatic coupling packagemethod comprises vertical columns, a transverse beam, an optical fiber clamp, a lens clamp mechanism, a lower clamp device, a material disc mechanism, a laser power meter and the like, wherein the optical fiber clamp, the lens clamp mechanism, the lower clamp device, the material disc mechanism and the laser power meter are arranged on a base; and the positions of the optical fiber clamp, the lensclamp mechanism and an optical fiber automatic angle-adjusting welding device can be adjusted so as to realize accurate coupling package of the butterfly-shaped semiconductor laser. The automatic coupling package method is high in automation degree and high in package efficiency; the coupling package device adopted by the automatic coupling package method is reasonable in structural design, the complete subsequent procedures from coupling alignment to package can be automatically completed, and compared with a traditional manual production line, the automatic coupling package device has the advantages of being easy and convenient to operate, low in production cost, stable in product quality and the like.
Owner:CENT SOUTH UNIV
Environment-friendly sewage floating oil separation treatment equipment
InactiveCN112062213AImprove removal efficiencyHigh speedWater treatment parameter controlFatty/oily/floating substances removal devicesOil separationSewage
The invention discloses environment-friendly sewage floating oil separation treatment equipment, and relates to the field of environmental protection. The equipment comprises a treatment box; a waterinflow pump is fixedly connected to one side of the treatment box; a water inflow pipe is fixedly connected between the output end of the water inflow pump and the treatment box; a top cover is fixedly connected to the top end of the treatment box; an oil slick removing mechanism is arranged in the top cover; a driving device is fixedly connected to the exterior of the treatment box; a partition plate is fixedly connected to the bottom end in the treatment box; a baffle is arranged in an oil removal area; a plurality of floating oil holes are formed in the baffle; a drainage hole is formed inthe partition plate; an electric valve is arranged at the drainage hole, fixedly connected with the partition plate and connected with a middle pipe; The oil slick removing mechanism and the driving device are adopted, oil slick on the surface of sewage can be shoveled and separated, reciprocating operation can be achieved, the oil slick removing efficiency is high, the oil slick removing speed ishigh, the chemical sewage treatment efficiency can be greatly improved, and follow-up fine treatment of the chemical sewage is facilitated.
Owner:刘亚玲
Supersonic prostate treatment device
ActiveCN107042000ARealize secondary adjustmentEasy to adjustUltrasound therapyProstate ultrasoundInsertion stent
The invention relates to a supersonic prostate treatment device. The device comprises a support, a positioning adjusting mechanism arranged on the support and a supersonic probe which is arranged on the position adjusting mechanism and can move along the position adjusting mechanism; and the position adjusting mechanism comprises four rod group mechanisms arranged uniformly along the circumferential direction, and an interval between the adjacent rod group mechanisms is 90 degree. Each second slide block is connected with different first connecting holes to move in the horizontal direction, so that the supersonic probe is adjusted in a relatively large stroke, each first slide block is moved to a corresponding position via a leading screw, secondary adjustment of the second blocks is realized manually, coarse and fine adjustment of the supersonic treatment device is carried out convenient, the accuracy of a treatment position is ensured; annular arms are arranged to realize third adjustment of the supersonic treatment device; and the balance of a radial adjusting rod is adjusted.
Owner:中挪(青岛)科技创新有限公司
Method for estimating noise power spectrum and voice activity
The invention relates to a method for estimating the noise power spectrum and the voice activity. According to the method, the appear probability of a voice on a frequency sub band and power spectrum information of noise can be finally deduced according to the time sequence relevance of a sequential hidden markov model (SHMM) description language based on first-order regression on each frequency component. The method comprises the following steps of: 1) extracting a logarithmic amplitude spectrum envelop for a voice signal on each frequency component, and constructing a corresponding binary hidden markov model, wherein each state is represented by Gaussian distribution; 2) for a field of voice data, setting M frames of caches, storing the previous M frames of input signals into the caches, extracting M frames of logarithmic amplitude spectrums from the caches, and constructing an initialization model by adopting a maximum likelihood estimation algorithm; and 3) after the initialization model lambdaM is obtained, starting from the (M+1)th frame, gradually updating the HMM of each frequency band by adopting an incremental learning method, and sequentially performing recurrence to obtain a noise value and the appear probability of a voice signal.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI +1
Composite power unit of engine
ActiveCN1982680AAvoid damageLow costElectric motor startersEngine controllersThermal radiationCrankshaft
An engine multiple power unit comprises a generator, an induction magnet and a sensor. The present invention can make the parts producing the timing signals be far away from the engine disposition the sensor and the induction magnet not be hidden by the coil staler and the magnet rotor and not be easy to be influenced of the heat radiation of the engine case, and can also fully utilize the cooled air outside to heat exchange, so as to make the ambient temperature be lower.
Owner:IND TECH RES INST
A kind of prostate ultrasonic therapy device
ActiveCN107042000BRealize secondary adjustmentEasy to adjustUltrasound therapyProstate ultrasoundEngineering
The invention relates to a supersonic prostate treatment device. The device comprises a support, a positioning adjusting mechanism arranged on the support and a supersonic probe which is arranged on the position adjusting mechanism and can move along the position adjusting mechanism; and the position adjusting mechanism comprises four rod group mechanisms arranged uniformly along the circumferential direction, and an interval between the adjacent rod group mechanisms is 90 degree. Each second slide block is connected with different first connecting holes to move in the horizontal direction, so that the supersonic probe is adjusted in a relatively large stroke, each first slide block is moved to a corresponding position via a leading screw, secondary adjustment of the second blocks is realized manually, coarse and fine adjustment of the supersonic treatment device is carried out convenient, the accuracy of a treatment position is ensured; annular arms are arranged to realize third adjustment of the supersonic treatment device; and the balance of a radial adjusting rod is adjusted.
Owner:中挪(青岛)科技创新有限公司
Composite power unit of engine
ActiveCN100419238CAvoid damageLow costElectric motor startersEngine controllersThermal radiationCrankshaft
An engine multiple power unit comprises a generator, an induction magnet and a sensor. The present invention can make the parts producing the timing signals be far away from the engine disposition the sensor and the induction magnet not be hidden by the coil staler and the magnet rotor and not be easy to be influenced of the heat radiation of the engine case, and can also fully utilize the cooled air outside to heat exchange, so as to make the ambient temperature be lower.
Owner:IND TECH RES INST
Metal powder separation device and using method thereof
PendingCN113926704ASpeed up fine separationsEasy to fine-tuneGas current separationGrain treatmentsEngineeringStructural engineering
The invention relates to a metal powder separation device and a using method thereof, and discloses a separation device for pre-separating metal powder by utilizing airflow to facilitate subsequent fine separation and a using method of the separation device. The metal powder separation device comprises a material conveying barrel, a separation assembly arranged on one side of the material conveying barrel and a discharging assembly arranged on the other side of the material conveying barrel, and is characterized in that the separation assembly separates metal powder in the material conveying barrel; the separated metal powder is discharged through the discharging assembly; the material conveying barrel is of a long-strip-shaped barrel-shaped structure with the two ends open; the material conveying barrel is divided into three parts; the part, close to one end, of the material conveying barrel is a feeding cavity; the middle part of the material conveying barrel is a separation cavity; the part, close to the other end, of the conveying barrel is a discharging cavity; the feeding cavity is communicated with the separation cavity; the separation cavity is communicated with the discharging cavity; the feeding cavity is located above the separation cavity; and the separation cavity is located above the discharging cavity.
Owner:JIANGSU VILORY ADVANCED MATERIALS TECH CO LTD
A formwork support for cast-in-place concrete slabs
InactiveCN106401177BReduce construction workloadReduce dosageForms/shuttering/falseworksSupporting systemPre stress
Owner:胡彦彬
A general pre-embedded device for pc components
ActiveCN114227911BEasy to adjustEasy to fine-tuneAuxillary shaping apparatusStructural engineeringMechanical engineering
Owner:南通现代建筑产业发展有限公司
Novel sewing machine lifting pressing foot front lever loose thread nail structure and assembling method thereof
The invention discloses a novel sewing machine lifting pressing foot front lever loose thread nail structure. The structure comprises the machine head and the engine base of a sewing machine. A leversheet is arranged at a front stitch pressing foot rod in the machine head. The rear end of the lever sheet is hinged to a pull rod. The lever sheet is provided with a loose thread groove and an internal portion is cooperatively provided with a loose thread nail and a loose thread nail back taper which is contacted with the outer contour of the loose thread groove. The loose thread nail and the loose thread nail back taper are split-type structures. The loose thread nail back taper is provided with a locking hole. A locking bolt is cooperated in the locking hole. On the two side walls of the machine head, side wall holes are cooperatively provided with the loose thread nail. Simultaneously, an assembling method is disclosed. By using the novel sewing machine lifting pressing foot front lever loose thread nail structure and the assembling method, production can be conveniently and rapidly performed and efficiency is high; and the split-type structure is adopted, local fine tuning is convenient, assembling is convenient and operation is easy.
Owner:陈梓豪
A method for installing a tbm meeting platform trailer
ActiveCN111379565BReduce installation errorsEasy to fine-tuneTunnelsTransport engineeringReliability engineering
The invention discloses a method for installing a trailer on a TBM meeting platform. The method includes the following steps: 1) construction preparation; 2) installing an electric crane; 3) stopping excavation; 4) supporting a tail drag plate after separation; 5) installing 6) Transportation of the meeting platform outside the cave; 7) Transportation of the meeting platform inside the cave; 8) Installation of the meeting platform; 9) Connection of the meeting platform; 10) Assembly completed. The invention has the advantages of flexible and convenient installation and reliable operation. Adopting it can not only reduce manual push and save labor, but also facilitate fine adjustment of the meeting platform, thereby reducing the installation error of the meeting platform and improving the assembly of the meeting platform At the same time, the method also shortens the assembly time, saves equipment costs, reduces costs, and improves safety performance.
Owner:CHINA RAILWAY 18TH BUREAU GRP CO LTD +1
Method for finely adjusting fixing frame of pre-buried large overweight bolt sleeve group
ActiveCN110863510ASimple structureEasy to manufactureFoundation engineeringRebarMechanical engineering
The invention discloses a method for finely adjusting a fixing frame of a pre-buried large overweight bolt sleeve group. The method is characterized by comprising the following steps of: a, manufacturing a movable fixing frame matched with a fixing bracket according to the fixing bracket on the basis of burying the original fixing frame; b, positioning according to design, and arranging a movablebracket on transverse angle steel added at the bottom of the fixing frame; c, after binding reinforcing steel bars, finally stretching and moving an adjustable support and a sleeve body through a chain block; and d, after the positioning requirement of design precision is met, inserting a bolt or a long reinforcing steel bar of a corresponding specification into an adjusted bolt hole for fixing, so that the sleeve group is fixed with the fixing frame. The method for finely adjusting the fixing frame of the pre-buried large overweight bolt sleeve group has the advantages that: the added movablebracket has a simple structure and is convenient to manufacture; and a movable base of the sleeve is added by using the movable bracket on the basis of burying the original fixing frame, so that thefine adjustment function of the sleeve is convenient to implement, the sleeve can be well positioned accurately, the fine adjustment operation environment is good, time and labor are saved, and the engineering cost is reduced.
Owner:CHINA MCC20 GRP CORP
Fiber Fixture for Automatic Coupling Package of Butterfly Diode Laser
Owner:CENT SOUTH UNIV
Assembled adjustable steel bar binding clamping fixture support
ActiveCN101890757BMeet the requirements of steel bindingEasy to adjustCeramic shaping apparatusSheet steelSteel bar
The invention discloses an assembled adjustable steel bar binding clamping fixture support which is characterized by taking a steel plate assembly pre-buried in a pier column at the bottom part as a mounting foundation; a support frame is fixedly mounted on the steel plate assembly through a bolt according to the shape of beam body steel bars; support rods are arranged on the support frame at intervals, the supporting height of the support rods on the support frame can be adjusted, and an end plate used for fixing and position-limiting of angle iron is arranged at the support end of each support rod. The assembled adjustable steel bar binding clamping fixture support can greatly improve the mounting speed of a steel bare binding clamping fixture, adjust the positioning precision of the binding clamping fixture with high efficiency, quickly realize the university among a plurality of beam types, be utilized repeatedly and realize energy conservation and emission reduction.
Owner:THE FIRST ENG CO LTD OF CTCE GRP
Construction method for goblet-shaped support super-long multi-layer horseshoe-shaped curved surface space steel structure
PendingCN113802693AAccurate spatial positioningImprove installation qualityStrutsExtraordinary structuresButt jointClassical mechanics
The invention discloses a construction method for a goblet-shaped support super-long multi-layer horseshoe-shaped curved surface space steel structure. The steel structure adopts a plurality of large-dip-angle giant steel pipe column core tubes penetrating through a top plate of a basement to support a large-span asymmetric horseshoe-shaped multilayer truss, and the construction method comprises the following steps: 1) mounting a core tube; pre-burying and fixing steel pipe column foundation bolts through a positioning frame; adopting multi-space accurate positioning on a spatial special-shaped circular tube inclined column of the steel pipe column; adopting multiple-space accurate positioning in positioning and mounting of a large-span overweight steel box girder, and reserving an operation hole in a cover plate, wherein welding is facilitated, and the field welding quality of a butt joint opening of the steel box girder is improved; and 2) mounting a truss: splicing the truss on the ground through a positioning jig frame, integrally lifting the truss through a plurality of lifters mounted on the top of a steel tube column of the core tube, and carrying out butt joint on pre-mounted inward-extending cantilever brackets and outward-extending cantilever brackets on the core tube. The method can meet the field mounting requirements of the goblet-shaped support super-long multi-layer horseshoe-shaped curved surface space steel structure.
Owner:中建六局第一建设有限公司 +1
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