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48 results about "Shooting up" patented technology

High-speed air-blowing static spinning composite preparation method and device for ultra-fine polymer fibre

The invention relates to a compound preparing method and device for the super thin polymer fiber high speed airflow static filature. The invention is to enhance the static filature speed through the high speed airflow. The invention separates the airflow passage form the solution passage through the sleeve pipe; the central capillary is the passage for the polymer solution and the outer pipe is the airflow passage. The polymer solution will shoot up from the liquid drop. The high speed airflow from the outer sleeve pipe produces the siphon effect to the polymer solution in the central capillary to overcome the surface tension of the liquid drop and speed the shooting out of the solution shooting flow in one hand; in the other hand the high speed airflow speeds up the volatilization of the solvent and the moving speed shooting to the other polar. The speed of the filature of the invention is ten times higher than the single static filature, moreover the formed nanometer fiber has a smooth surface and the diameter size and distribution is similar to the diameter of the single static filature.
Owner:JIANGXI NORMAL UNIV

Method for judging opening and closing states of high beam of vehicle driving at night

The invention discloses a method for judging opening and closing states of a high beam of a vehicle driving at night. The method comprises the following steps of shooting up a lamp polarizing and filtering image of the driving vehicle; extracting the lamp area from the polarizing and filtering image processed in the previous step; according to the mounting position of a camera, determining an effective monitoring area of a road; carrying out opening operation processing on the extracted and processed lamp image, and completing labeling; determining the lamps of the same vehicle; judging whether the lamps of the same vehicle are in a high beam state, wherein, when a condition 1 and a condition 2 are simultaneously met, the high beam of the vehicle is in the opening state, or else, the high beam of the vehicle is in the closing state; and repeating the previous steps, until completing all judgments of all vehicles. The method is suitable for the illumination environments of different road lamps at night, the non-light area is inhibited through the polarizing and filtering method, and the vehicle of which the high beam is opened can be accurately determined by subsequently extracting the features of the high beam.
Owner:浙江安谐智能科技有限公司

Circular curtain camera system

InactiveCN101021678AAdjust brightness in real timeAdjust color space in real timeTelevision system detailsMirrorsComputer scienceMirror plane
The invention provides a circular-screen camera system, comprising: conical reflector having continuous mirror surface and placed upside-down on a column; multiple cameras, distributed on the side surfaces of the column according to their camera views which are overlapped mutually; the cameras shoot up; each camera is located on the central axis of the conical reflector through the virtual image formed by the conical reflector. And it creatively uses the conical reflector in the circular-screen camera system to make image collection, able to make the pictures collected by the adjacent cameras have certain overlapped regions, thus able to assure being able to make fusion treatment on adjacent images by computer so as to form a circular-screen panoramic picture.
Owner:乔楠

Method and apparatus for acquiring garlic flake with sprout section upwards, and seed-sowing machine using the apparatus

The invention discloses a method for obtaining garlic bulblets with shoots up and roots down. A garlic bulblet is placed in a hopper-shaped container full of water which is then drained from the lower port of the container; water is used as a straightening aid and the difference from buoyancy bearing by the shoot part and the root part of the garlic bulblet is utilized to obtain the garlic bulblet with shoot up and root down. As to an application device of the method, a straightening wheel is fixed at the upper part of a water tank and a communicating vessel is installed at the front part of the water tank and connected with an external water tank by a water pipe; as to a garlic seeder which utilizes the device, a seed gripping assembly and a straightening device are respectively installed the rear part and the middle part above a frame and the seed gripping assembly is connected with the straightening assembly by a guiding groove; a planting assembly and a power and power transmission assembly are respectively installed at the front part and the rear part below the frame and the planting assembly is connected with the straightening device by a seed conveying chain. The method designed by the invention is simple and the application device is easy to realize, thus garlic seeds are characterized by straight appearance, upward garlic shoots and early emergence after being sown by a garlic seeder.
Owner:李华峰

Superthin-wall aluminium-alloy high-speed pressure casting method

This present invention relates to a method of high speed die-casting of super thin wall aluminous alloy. It comprises the steps as follow: putting a model in a die-casting machine, setting up the die-casting parameter, keeping the casting pressure at 780kg / cm2, model temperature 250Deg.c, solvent temperature 700Deg.c, then injecting the aluminous alloy into die-casting machine. Shoot up with 0.23m / sec to make cast whose wall thickness is less than 1.0mm, then take the cast out and plastic, smear, detect to satisfy international standard. This cast can be applied mainly in 3C product while the crust of computer, digital camera and mobile telephone.
Owner:CHUANG YEOU IND

Young garlic shoot harvester

ActiveCN106941868ASolving the problem of mechanized harvestingPrecious harvest timeHarvestersShootTurning frames
The invention relates to the field of agricultural machinery, in particular to a young garlic shoot harvester which comprises a car frame. A swing cutter device for cutting down young garlic shoots from bottoms is arranged at the front end of the car frame, a conveying device for conveying the young garlic shoots cut down by the swing cutter device to a harvesting box on the car frame is arranged above the swing cutter device on the car frame, advancing wheels are arranged on the two sides of the car frame, a land supporting drag wheel is arranged at the tail end of the car frame, a young garlic shoot drawing device for gathering and lifting young garlic shoots up in an advancing process of the car frame is arranged on the car frame and between the conveying device and the swing cutter device, and a peeling device for peeling the young garlic shoots in a lifting process through the young garlic shoot drawing device is arranged on the car frame and between the young garlic shoot drawing device and the swing cutter device. The young garlic shoot harvester disclosed by the invention solves the problem of mechanically harvesting the young garlic shoots, further has a reasonable structure, small volume, flexibility and convenience to operate and high work efficiency, wins precious harvesting time for young garlic shoot farmers and effectively reduces harvesting cost.
Owner:HENAN UNIV OF SCI & TECH

Rapid seedling cultivation method of Prunus pedunculata Maxim.

The invention discloses a fast seedling method of longstalck peaches, comprising: selecting ground temperature stably more than 10 DEG C in spring, seeding 20-25 kg seeds of longstalck peaches per mou; preparing the seeds of longstalck peaches one month ahead of time, placing the seeds of longstalck peaches in a container, burning the seeds using boiled water, meanwhile adding boiled water and mixing, wherein the quantity of the boiled water is added till immersing the seeds, and water temperature is mixed till the water does not burns hands, later on changing clean water once a day for seven days; mixing and accumulating the soaked seeds of longstalck peaches with the sand in a ratio of 1:3, covering with a plastic film for accelerating the germination of seeds, checking the seeds after seven days, seeding when the seeds shoot up, wherein row pitch in seeding is 30 cm, and plant spacing is 2cm to 4 cm. Routine field management is performed after seeding, complementary fertilizer is performed for two times in the middle period, the seeds come out when coming to the standards. The inventive method saves precious germplasm resource and sand storing cost in winter, nursery seedling date is high, which lays a good foundation for comeback of longstalck peaches and utilization of biomass energy.
Owner:NORTHWEST A & F UNIV

Technique for cultivating Hemifusus tuba

The invention relates to hemifusus tuba artificial culture technology. The method utilizes a 20 mculture pond. Cement boards with overspreading through holes are laid on the bottom of the culture pond; and the cement boards are 20cm away from the bottom of the culture pond so as to form space between the pond bottom and the cement boards. Then mesh cloth and fine sand are respectively arranged on the cement boards; a water inlet pipe is directly communicated with the pond bottom which is provided with a drain hole; and one end of the drain hole is extended out of the pond, while the other end of the drain hole in the pond is connected with a 70cm high plastic water pipe which is perpendicular to the water surface and is taken as a drain pipe. The initial density of released young snails is 400 to 500 pcs / m; and with the growth of the individual young snails, the density is gradually reduced and the later stage culture density is 30 to 40 pcs / m. During the water change, the water shoots up from the pond bottom through a sand layer; and due to the flushing action of the water, a great part of dirt in the sand layer such as the excrement of the hemifusus tuba is flushed away from the sand layer and is then discharged through the 70cm high drain pipe. Therefore, the culture environment is fully improved so as to benefit the growth of the hemifusus tuba, reduce the diseases, improve the survival rate, and simultaneously reduce the flushing frequency of the sand layer and consequently save much manpower.
Owner:GUANGDONG OCEAN UNIVERSITY

Method for mending excessive polishing of die cavity edge of shot-off forming master die cavity

InactiveCN1603058AAvoid excessive polishingAvoid burrsEngineeringMechanical engineering
The invention relates to a manufacturing method of the master die cavity which is used to shoot up forming die. It can prevent the edge of the die cavity from over buffing. An auxiliary gripper is utilized to protect the master die cavity while buffing. The auxiliary gripper has a center hole, and its shape is corresponded to the edge of the die cavity. The manufacturing method includes the following steps that the corresponding fixed structure and location structure are forming at a die cavity rough blank and auxiliary gripper. The auxiliary gripper is located at the die cavity rough blank by the location structure. And the relative relation of the auxiliary gripper and the die cavity rough blank is kept in constant by the fixed structure. The composite unit formed by the auxiliary gripper and the die cavity rough blank is practiced electro discharge machining programming by an electrode. The required master die cavity is made in the concave center of the die cavity. The composite unit is practiced buffing programming. Then the fixed structure is loosened. The auxiliary gripper is moved away from the master die cavity, so that the intact and satisfactory master die cavity is gained to practice the subsequent programming to shoot up the forming die.
Owner:BENQ CORP

Method and device for Fourier domain iterative splicing super-resolution microscopy based on surface wave illumination

The invention discloses a method for Fourier domain iterative splicing super-resolution microscopy based on surface wave illumination. The method comprises the following steps of (1) by changing the illumination angle of incident illumination light, stimulating the surface wave which is propagated along different directions at an interface of a sample and air; (2) enabling a surface wave illumination sample to generate frequency spectrum shifting along the corresponding transverse wave vector, and shifting a high-efficiency component of an object to the lens low objective low passband range; (3) enabling a CCD (charge coupled device) to shoot up an image corresponding to each illumination angle, substituting into a Fourier domain iterative splicing (FP (Fabry-Perot)) algorithm, and finally reconstructing the strength and phase distribution of the complicated sample. The invention also discloses a device for the Fourier domain iterative splicing super-resolution microscopy based on the surface wave illumination. The method has the advantages that the restored quantitative phase does not need to be obtained by interference; when the etching depth of the restored etching grid sample is calculated, the accuracy is verified through AFM (atomic force microscope) detection; the broad application prospect is realized in the material and life sciences.
Owner:ZHEJIANG UNIV

Non-visual geometric camera array video positioning method and system

The invention discloses non-visual geometric camera array video positioning method and system. The non-visual geometric camera array video positioning system is arranged on a camera array on a plane board at fixed distance, the focus and visual field angles of all cameras are same, and the whole visual field can be divided into diamond-shaped visual field zones with same shape and shape projection area in the coordinate plane. An analog video signal of each camera is converted into a digital video signal by a video collecting card which is inserted in a computer extension slot. A computer can analyze the digital video information of each path to judge whether the target appears in each video image or not, and can calculate which diamond-shaped visual field zone the target appears in through the serial number of the cameras shooting up the target, and then the target can be quickly positioned.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Perforated pipe system for cleaning pavement dust on urban road

Perforated pipe system for cleaning pavement dust on urban road is used for environment protection technology field. The invention comprises: a valve which can be open and closed automatically, pressure source, perforated pipe which is parallel to the ground and is set under the city road bed. One end of the perforated pipe connects to the pressure source through the valve and the other end is sealed. The invention disposes the perforated pipe parallel to the ground in a proper distance from the city road bed to the ground. The water of the pressure source shoots up to clean the dust on the ground which can be controllable and saves the manpower and material resources.
Owner:SHANGHAI JIAO TONG UNIV

Optical remote sensing satellite data obtaining method

The invention relates to the technical field of remote sensing satellites, and relates to an optical remote sensing satellite data obtaining method. The method comprises the following steps of establishing a weather database, wherein weather data is classified and stored in the weather database according to monitoring geological locations and monitoring time; establishing an optical remote sensing satellite running model; utilizing the optical remote sensing satellite running model to simulate and shoot up to obtain simulation image data; determining an actual image geological location and actual image obtaining time corresponding to the simulation image data; according to the actual image geological location and the actual image obtaining time, calling the corresponding weather data from the database; according to the called weather data, judging the influence of the weather data on the availability of the simulation image data; according to the judging result of all simulation image data, generating a satellite image receiving schedule; and enabling a ground receiving terminal to receive the image data sent from the optical remote sensing satellite according to the satellite image receiving schedule. The method has the advantage that the image data received by the ground receiving terminal is available.
Owner:SATELLITE SURVEYING & MAPPING APPL CENTSASMAC NAT ADMINISTATION OF SURVEYING MAPPING & GEOINFORMATION OF CHINANASG

High-speed air-blowing static spinning composite preparation method and device for ultra-fine polymer fibre

The invention relates to a compound preparing method and device for the super thin polymer fiber high speed airflow static filature. The invention is to enhance the static filature speed through the high speed airflow. The invention separates the airflow passage form the solution passage through the sleeve pipe; the central capillary is the passage for the polymer solution and the outer pipe is the airflow passage. The polymer solution will shoot up from the liquid drop. The high speed airflow from the outer sleeve pipe produces the siphon effect to the polymer solution in the central capillary to overcome the surface tension of the liquid drop and speed the shooting out of the solution shooting flow in one hand; in the other hand the high speed airflow speeds up the volatilization of thesolvent and the moving speed shooting to the other polar. The speed of the filature of the invention is ten times higher than the single static filature, moreover the formed nanometer fiber has a smooth surface and the diameter size and distribution is similar to the diameter of the single static filature.
Owner:JIANGXI NORMAL UNIV

Processing method of mulberry shoot plaited artwork

The invention discloses a processing method of mulberry shoot plaited artwork. The processing method is characterized in that mulberry shoots are sterilized and softened, then skinned and shaped, and the treated mulberry shoots are woven into certain shapes and then subjected to perfect processing. The processing method comprises the following steps: after selecting the mulberry shoots up to specifications, treating with a treatment solution A to play the roles of softening, primary sterilization and skin bulking, so that the skinning speed can be increased, and damages of machinery to the mulberry shoots during skinning are reduced; after re-softening treatment by hot steam, straightening the bent mulberry shoots to facilitate unified weaving; treating with a treatment solution B to improve the toughness of the mulberry shoots and to enhance the antibacterial and mildew-proof functions; and after weaving and shaping, painting with a finish paint, which has excellent anti-fouling performance, can quickly form a film on the surface of a product, is free from after-tack after being dry, cannot crack or warp after long-time use and can maintain the surface of the product bright and attractive. The processing method greatly improves the utilization ratio of the mulberry shoots, can respectively process the mulberry shoots taken at different times and is high in practicability.
Owner:阜南佳利工艺品股份有限公司

360º camera system

A 360° camera system that eliminates problems associated with capturing real-time encounters between first responders, i.e., law enforcement personnel (such as police officers) and civilians such that all individuals involved in the encounter can be held accountable for their actions, wherein multiple cameras are provided, e.g., two to three cameras, consisting of cameras that acquire images in a 360° range, as opposed to conventional cameras that shoot up to a range of 170°, such that questions about sequence of events and their circumstances are eliminated.
Owner:LIBERATOR 360 LLC

Cable connector and producing method thereof

A cable connector and its manufacturing method, the said cable connector is applied in portable electronic device to transmit data and power, includes connection-peg, the inner circuit and insulation shell that are connected with connection-peg; the connection-peg includes several conduction terminals that has welding part, the inner circuit has several welding feet, the said welding part is connecting with corresponding welding feet, put a plastic matter on weld zone between the electronic terminal and welding feet. The manufacturing method is through the said welding part of inner circuit board and the connection-peg shoot up a forming plastic body to form a forming module, then fix the forming module in the insulation shell, in this way the joint between conduction terminal and welding feet will not be influenced by external force, further ensure the reliable connection between the connection-peg and inner circuit board.
Owner:FOXCONN (KUNSHAN) COMPUTER CONNECTOR CO LTD +1

Image pickup apparatus that sets shutter speed for moving image shooting, method of controlling the same, and storage medium

An image pickup apparatus capable of setting a shutter speed for moving image shooting up to a speed closer to a long exposure-side limit value irrespective of the setting exposure step increments for setting a shutter speed for still image shooting. Exposure step increments which values of a shutter speed can be set are set to one of a plurality of settings of exposure step increments according to a user's operation. A frame rate of a moving image to be shot is set in the moving image shooting mode. A shutter speed is set based on the set exposure step increments. In the moving image shooting mode, control is performed so as to make it possible to set a shutter speed which is the reciprocal of the set frame rate and does not conform to the set exposure step increments.
Owner:CANON KK

Light guiding assembly and manufacturing method thereof, eyeball tracking module and method thereof and video glasses

The embodiment of the invention provides a light guiding assembly and a manufacturing method thereof, an eyeball tracking module and a method thereof and video glasses. The light guiding assembly is arranged in the eyeball tracking module and comprises a first substrate, a second substrate, a first electrode, a second electrode and at least one liquid crystal structure. The first substrate and thesecond substrate are oppositely arranged. The first electrode is arranged on the first substrate. The at least one liquid crystal structure is arranged between the second electrode on the second substrate and the first electrode on the first substrate. The liquid crystal structure comprises liquid crystal molecules. The first electrode and the second electrode are used for controlling deflectiondirections of the molecules by applied voltage such that light rays meeting the threshold value condition emitted to the light guiding assembly can shoot up along the pre-set direction. Through the light guiding assembly in the eyeball tracking module, the occupation size of the eyeball tracking module is reduced. The requirement for the thin type of the eyeball tracking module is met. Additionally, the real-time controllable feature of the eyeball tracking module is achieved. Resources are saved.
Owner:BOE TECH GRP CO LTD +1

Skin-friendly type medical endoscope

The invention provides a skin-friendly type medical endoscope. The skin-friendly type medical endoscope comprises an endoscope body, a control device, a display screen, and a keyboard or mouse input part, wherein the control device comprises a light source device and a processor, and the processor is used for processing a video image signal; the endoscope body comprises a body operation part and an insertion part. The skin-friendly type medical endoscope is characterized in that the insertion part sequentially comprises a flexible part, a bending part and an endoscope front end part which are mutually connected from the body operation part of the base end side; an operation button, a shutter button and a rotary button are arranged on the body operation part, the operation button is used for performing suction, air delivery and water delivery at the front end part of the endoscope, the shutter button is used for shooting up, and the rotary button is used for remotely controlling the bending part to bend; the outer surface layer of the insertion part is coated and connected with a simulation skin layer, and the outer surface layer of the simulation skin layer is coated and connected with a silicone rubber thin film. The skin-friendly type medical endoscope has the advantages that the operation is easy; when the endoscope is inserted into a body cavity of a patient, the injury to the body cavity of the patient is avoided, and the pain of the patient is greatly reduced.
Owner:苏州高新区建金建智能科技有限公司

Combined firework

ActiveCN110220423ABeautiful and diverse firing effectsThe beauty of the discharge effectExplosivesFireworksFireworksTitanium
The invention discloses a combined firework. The combined firework comprises a firework powder barrel and powder filling the firework powder barrel. The combined firework setting-off effect is attractive and diversified, and specifically comprises red star white glitter mine shooting up brocade crown and red plum blossom, blue star titanium flower crackling mine shooting up orange purple dahlia silver plum blossom, titanium chrysant mine shooting up aquamarine blue dahlia gold plum blossom, red mine shooting up red plum blossom titanium chrysant ejecting brocade crown, titanium flower crackling mine shooting up gold plum blossom blue ejecting red palm and white glitter mine shooting up red blue dahlia and silver plum blossom ejecting purple palm. The setting-off effect is extremely attractive, and the development of the color diversity of the fireworks is promoted.
Owner:HUNAN FUXING FIREWORKS CO LTD

Insulation blocking equipment for Ethenret

The equipment includes following parts: first Ethernet interface; through conversion of electromagnetic field, first coupling transformer in use for coupling Ethernet signal at Ethernet interface end to the following photovoltaic conversion module; first photovoltaic conversion module converts differential signal from the coupling transformer to optical signal; second photovoltaic conversion module in use for converting optical signal from first photovoltaic conversion module to differential signal, which is sent to second coupling transformer; second coupling transformer sends differential signal from second photovoltaic conversion module to second Ethernet interface through coupling mode. Using mode of optical isolation or magnetic isolation, the invention isolates electrical connection between network devices thoroughly so as to prevent network devices in larger area from shot up caused by thunder.
Owner:徐震

LED (light emitting diode) lamp for glass curtain wall

The invention provides an LED (light emitting diode) illuminating lamp for a glass curtain wall. The lamp provided by the invention comprises a metal bottom shell, an upper shell and a plurality of light source modules which are installed on the inner bottom of the metal bottom shell, wherein the upper shell and the metal bottom shell are buckled into a whole; the upper shell is provided with a plurality of pairs of front light-emitting holes, through holes and left and right light-emitting holes at intervals, and each front light-emitting hole is provided with a lens; each light source module comprises a shell, a built-in control-driven circuit, a forward light emitting device above the shell and a rotating seat arranged on one end of the shell, a bidirectional light emitting device is installed on the end face of the rotating seat, a rotatable inclined light-transmitting device is installed on the rotating seat, and the head of the inclined light-transmitting device is exposed from the through holes of the upper shell; light rays emitted from the bidirectional light emitting device shoot up from the corresponding left and right lenses to serve as a pixel point light source, and the light rays emitted by the forward light emitting device shoot up from the lens to serve as a forward background light source; and when the bidirectional light emitting device and the forward lightemitting device are in a nonoperating state, the light rays from the inclined light-transmitting device shoot up in an inclined upward direction along the right sides of the light source modules to serve as an inclined background light source.
Owner:SHENZHEN TRONSIN ILLUMINATING TECHN

Firearms gun

InactiveCN101349528AReduce unstable vibrationImprove accuracyLaunching weaponsProjectilesShock waveEngineering
The invention discloses a weapon artillery, which mainly comprises a novel artillery which is formed by an artillery tube, an artillery body and a gas accelerator and the like, wherein the gas accelerator is arranged inside the artillery, and the main structure of the gas accelerator is a shrinkage expanding structure which is formed by a shrinkage region and an expanding region. When in shooting, a promoter is ignited to burn promoting charge for forming high pressure gas, and high pressure gas which is generated by the promoting charge is rapidly expanded, passes through the shrinkage and expanding gas accelerator and generates hypersonic shock wave to push the bullet move in the artillery bore until to be shot up. The weapon can reduce the recoil of the artillery and the muzzle flame.
Owner:王雪松

LED optical-concentrated device in direct impact mode

The invention relates to an LED optical-concentrated device in direct impact mode, which comprises a shell, and a socket cover. The device has the characteristics that a reflector is clamped or sleeved on the inside of a lower opening of the shell; a circuit board is fixedly connected on the outside of the bottom of the reflector; an LED is arranged in the inner part of the reflector through a holder and the top direction of the LED is opposite to that of the opening of the reflector; and an LED is arranged in a direct impact mode on the inner bottom part of the reflector corresponding to the LED. The LED straightly faces a reflective panel of the reflector, an effective angle light intensity giving out by the LED shoots up forwardly through the spot light reflection of the reflective panel and an effective angle light intensity giving out by the other LED shoots up forwardly. Therefore, two light crosses overlay to enhance effects of facula, and can generate four states of simultaneously lighting, simultaneously dark, and single lighting of the two LEDs, which fully exerts the effects of light source and is applicable to the demands of different light intensity and lighting distance. The LED optical-concentrated device in direct impact mode is simple in structure, and convenient in maintenance, and can be widely used in various luminaries.
Owner:TIGERFIRE GUANGZHOU LIGHTING TECH

Three-dimensional adjusting device

InactiveCN108088385ARealize all-round 3D shootingUsing optical meansStands/trestlesEngineeringInjected drug
The invention relates to a three-dimensional adjusting device for a three-dimensional scanning device camera. The three-dimensional adjusting device is composed of a bottom plate, a camera base arranged on the bottom plate, and a fine adjustment structure arranged on the camera base. A drive element for moving a sliding rail of the camera base and driving the sliding rail to move is arranged between the bottom plate and the camera base. The fine adjustment structure consists of a rotation unit and an adjustment unit that are in signal connection; the rotation unit includes a bracket and a connection part connected with the bracket; and the bracket is able to rotate relative to the axis direction of the connection part. The three-dimensional adjusting device having a simple structure is operated convenient. Therefore, the three-dimensional scanning device camera not only can carry out shooting left and right or front and back but also can carry out shooting up and down or front and back, so that omnibearing three-dimensional shooting is realized truly.
Owner:苏州西博三维科技有限公司

Handheld underwater grouting pile top-surface elevation control early-warning device and method

The invention discloses a handheld underwater grouting pile top-surface elevation control early-warning device and method. The handheld underwater grouting pile top-surface elevation control early-warning device comprises a handheld alarm, a waterproof lead and an underwater closed probe. The handheld alarm is provided with a main controller, a power supply, a signal processing circuit and an alarm circuit inside, wherein the power supply, the signal processing circuit and the alarm circuit are connected with the main controller respectively. A motor is arranged in the underwater closed probe. When concrete is grouted, coarse aggregate rises to the designed elevation, the motor inside the underwater closed probe rotates in a resistant manner, and shoot-up current signals generated by the resistant rotation are connected to the handheld alarm through the waterproof lead to generate alarm signals. The handheld underwater grouting pile top-surface elevation control has the advantages of simple structure and convenience in operation and can be accepted by on-site constructors. Through test on the construction site, pile top elevation of the underwater grouting pile can be accurately controlled, within 5 cm, and control accuracy is remarkably improved as compared with that of conventional pile detection methods.
Owner:SHANDONG UNIV
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