1066results about How to "Reduce the risk factor" patented technology

The invention discloses a method for detecting the safe power-line-cruising distance of a UAV (unmanned aerial vehicle), which comprises the following steps of: (1) carrying out analysis according to the characteristics of electromagnetic fields of to-be-detected high-tension transmission lines in different voltage levels, and establishing corresponding electromagnetic-field simulation calculation models; (2) determining the maximum errors of electronic devices (which are susceptible to electromagnetic interference) carried by the power-line-cruising UAV and measuring devices used in the process of route planning making before routing inspection; (3) according to the requirements of the determined electronic devices on electromagnetic fields in the process of normal operating, by using the electromagnetic-field simulation calculation models of the high-tension transmission lines in different voltage levels and electromagnetic-field simulation calculation software, calculating the similarities and differences of an electromagnetic environment when the UAV has different distances away from a transmission conductor in the process of carrying out line-cruising operation on each high-tension transmission line, thereby determining the range of the safe distance between the UAV and the transmission conductor; and (4) carrying out line-cruising by the UAV according to the determined safe distance of each to-be-detected transmission line, thereby avoiding the situations that the devices run disorderly, the flight communication is interfered, a flight mission is failed, and the like caused by the electromagnetic field of the transmission conductor, and then ensuring the safety, stability and reliability of a flight.

The invention discloses a construction technology of a steel sheet pile cofferdam for Yellow River Channel internal support table construction. A construction support table is an underwater support table arranged in a Yellow River Channel. The technology comprises the following steps of firstly, determining a structure and the size of a used cofferdam in the process of underwater support table construction; secondly, surveying and setting out; thirdly, constructing the cofferdam; fourthly, constructing a bored pile at the bottom of the support table; fifthly, constructing the support table: carrying out forming construction of the underwater support table on the top of the bored pile after construction when the bored pile construction is finished, and finishing integrative construction of the bored pile and the underwater support table; and sixthly, constructing a pier column at the upper part of the support table. The invention has the advantages of reasonable design, convenient construction and low construction cost, carrys out construction by adopting an integrative construction method of the support table and the bored pile and can efficiently solve the defects of long construction period, large investment, needs of setting up a plurality of construction platforms, large construction difficulty and the like in the successive construction process of the bored pile and the support table in the traditional construction process of the steel sheet pile cofferdam.

The invention relates to an unmanned aerial vehicle device and a sampling method for automatic sampling of water quality, comprising a main body of an unmanned aerial vehicle, an unmanned aerial vehicle foot arranged on the side of the main body of the unmanned aerial vehicle, and an energy source and a control unit. The man-machine device also includes a mounting bracket arranged on the underside of the main body of the drone, and an automatic water quality sampling unit is mounted on the mounting bracket. Driven by the stepping motor, the rotating guide shaft rotates to the position of the sampling bottle, and the water quality sample is sequentially introduced into the sampling bottle through the sampling pump, the sampling hose, and the groove guide mechanism. The UAV device of the present invention can sequentially collect water quality samples at multiple sampling points in one working cycle, which is convenient for synchronous analysis after returning, further improves sampling efficiency, and can flexibly set the number of samples collected according to requirements and can flexibly control each water quality sample. The depth of sample collection is convenient for fast and automatic collection of water quality samples in different regions or watersheds.

The invention relates to an unmanned ship device and sampling method for automatic sampling of the water quality. The unmanned ship device comprises an unmanned ship body, an energy and control unit arranged in a bin of the unmanned ship body, and an automatic water quality sampling unit. The automatic water quality sampling unit comprises a sampling bottle, a supporting body mechanism for installation of the sampling bottle, a sampling pump arranged on the outer side of the unmanned ship body, a sample hose connected with the sampling pump, and an oscillating arm water-fetching mechanism forcontrolling the sampling hose to rotate. The oscillating arm water-fetching mechanism comprises a hollow pipe nested on the outer side of the tail section of the sampling hose, and a first stepping motor connected with the end, close to the sampling pump, of the hollow pipe. By means of the unmanned ship device and sampling method for automatic sampling of the water quality, water quality samplesof multiple sampling sites can be collected sequentially in a working cycle, the samples can be analyzed synchronously after being sent back, the sampling efficiency is further improved, and water quality samples of different areas or watersheds can be conveniently, quickly and automatically collected.

A helicopter rotor blade motion parameter measuring method based on binocular three-dimensional vision includes the steps: (1) utilizing two binocular three-dimensional vision systems to construct a helicopter rotor blade motion image obtaining device; (2) utilizing a standard calibration template to achieve calibration of each binocular three-dimensional vision system; (3) sticking a certain number of calibrating points on each blade of a helicopter; (4) on the base that blade calibrating points in a binocular three-dimensional vision left image and a binocular three-dimensional vision right image are matched with the calibrating points, utilizing camera inner parameters and camera outer parameters, calibrated well, of the binocular three-dimensional vision systems to achieve measurement of three-dimensional information of the calibrating points in blades; (5) utilizing the three-dimensional information, obtained in the step (4), of the calibrating points in the blades, conducting calculation according waving, shimmying, and torsion definitions of blade motion parameters, and obtaining the blade motion parameters of helicopter rotor blades. The helicopter rotor blade motion parameter measuring method based on the binocular three-dimensional vision has the advantages of being simple in operation, free of contact type, small in danger coefficient, high in precision and the like.

The invention discloses a construction process of a double-wall steel cofferdam for construction of a pier bearing platform in main river water of the Yellow River. The construction process comprises the following steps of: 1, determining the structure and the size of a cylindrical double-wall steel sleeve box used in the construction of the bearing platform in the water; 2, measuring and paying off; 3, performing cofferdam construction: gradually lowering the cylindrical double-wall steel sleeve box to a preset position by adopting hoisting equipment, and fixing the bottom of the cylindrical double-wall steel sleeve box lowered in place by adopting a supporting fixer; 4, sealing the bottom; 5, constructing drilled piles at the bottom of the bearing platform; 6, gradually pumping water, performing underwater digging, and gradually cutting a steel protecting canister; 7, constructing the bearing platform; and 8, constructing pier columns on the upper part of the bearing platform. The process is reasonable in construction step design, convenient in construction, low in construction cost and short in construction period; and integrated construction of the bearing platform and the drilled piles is realized, meanwhile, the sinking operation of the double-wall steel sleeve box can be simply, conveniently and efficiently finished with high quality, and multiple defects in the construction of the conventional double-wall steel sleeve box cofferdam are overcome.

The invention discloses an automatic punching device and method for high-speed railway tunnel anchor implantation and solves problem that health of construction staff is damaged, punching accuracy is poor in anchor implantation, construction efficiency is low and security of the construction staff cannot be guaranteed in existing tunnel anchor implantation. Each of the front end and the rear end of a hydraulic life truck is provided with a support leg, each support leg is provided with a support ball head and a winch, each of the front end face and the rear end face of a lift platform is provided with a hydraulic telescopic rod, each of the upper and lower ends of a frame-type housing is provided with a horizontal chute, a fixing pillar is vertically arranged in the two horizontal chutes, a horizontal servo motor and vertical chutes are arranged in the fixing pillar, each of the vertical chutes is provided with an electric hammer, vertical servo motors are arranged under the electric hammers, a gravity sensor and a laser range finder are arranged at the lower end of the frame-type shell, and a radar range instrument is arranged at the upper end of the frame-type shell. By the arrangement, working accuracy is greatly improved, and danger coefficient in construction is reduced.

The invention discloses a method for processing waste gas from the production of viscose chemical fiber, which relates to the field of the waste gas processing method. Currently, two methods employed to process the waste gas from the production of viscose chemical fiber are as follows: one is a combustion method and the other is an adsorption method, wherein the combustion method has the advantage that the wastes gas is processed more thoroughly and the defects that the investment is large and economic benefit is poor; the adsorption method has advantages of relatively small investment and obvious economic benefit, not only solves the environmental problems, but also brings objective economic benefit to enterprises. The waste gas from the production of viscose chemical fiber is successively washed by NaOH or Na2S, cooled, adsorbed by active carbon, desorbed and condensed to remove H2S in the waste gas and recover CS2 for production. The invention has the advantages of safety, low cost and high recovery efficiency.

The embodiment of the invention discloses a vehicle control method, device and equipment and a storage medium. The vehicle control method comprises the steps of obtaining first current geographical location information, searching a weather server, obtaining first real-time weather corresponding to the first current geographical location information, and if it is determined that the first real-time weather meets the abnormal weather condition, controlling a vehicle machine end connected with a vehicle to carry out vehicle control operation corresponding to the abnormal weather condition. By means of the vehicle control method, the problem that novice drivers have no idea of when and how to control vehicles under abnormal weather conditions is solved, and the danger coefficient of driving is effectively reduced.

The invention discloses a full-automatic greasing and capping machine, relating to a device for adding grease and a dust cap to a bearing. A workbench is fixed on a machine frame; a mounting base is fixed on the workbench; the front part of the mounting base is provided with a material support plate; the upper part of the mounting base is provided with a control device; the left side of the workbench is provided with a material conveyor, and the right side of the workbench is provided with an unacceptable product removing device; according to the processing sequence, two greasing devices, a grease quantity detection device, two capping devices, a dust cap height detection device and a grease equalizer are sequentially arranged on the mounting base from left to right; turning devices are respectively arranged between the two greasing devices and between the two capping devices; and a front reciprocating device and a rear reciprocating device are respectively arranged below the workbench. The full-automatic greasing and capping machine disclosed by the invention integrates the stations and the mounting base into a whole, is high in positioning accuracy and facilitates debugging and installation of a fixture mold; and the total seal shell is convenient for cleaning and maintenance, thus, the invention has the advantages of strong dustproof capacity, low danger coefficient, low failure rate and high product qualification rate.

The present invention discloses process and apparatus for producing bottle cap with pull ring and tear-off. The production process includes the following steps: printing on wide sheet; feeding to a numerically controlled punch with one numerically feeder, punching hole and forming; hemming and bending ears in a turntable ring squeezer to form the cap with pull ring and tear-off; conveying in a conveying belt to a glue dripping machine and dripping glue; and conveying in a conveying belt to drying apparatus and drying to obtain the product. The semi-automatic production process has high safety, high production efficiency, high material utilizing rate and saving in labor.

The invention relates to the field of power system safety equipment, in particular to an anti-falling device based on unmanned aerial vehicle hanging, and a hanging method thereof. The anti-falling device comprises an anti-falling component of which the top end is connected with an unmanned aerial vehicle removably, and the bottom end of the anti-falling component is provided with a fixed pulley used for hanging a safety rope; the anti-falling component is further provided with a clamping space which is such structured that the clamping space is provided with a gap fit with a tower cross bar and/or a support bar on a tower, and accordingly the anti-falling component can be hung on the tower cross bar and/or the support bar on the tower through movement of the unmanned aerial vehicle; operation personnel do not need to climb the tower for installing and removing the anti-falling component, and the operation personnel climb the tower and descend from the tower under the protection of thesafety rope on the anti-falling device, and are prevented from falling down; and the danger coefficient for climbing the tower for maintenance and repair of power transmission lines is reduced. The anti-falling device is simple in structure, and the hanging method is simple and easy to operate, and convenient to promote and apply to maintenance and repair of all power transmission lines.

The invention discloses a sensing type movement assisting bed. The sensing type movement assisting bed comprises an information acquiring system and a movement assisting system, wherein the information acquiring system is used for acquiring movement information of a user; and the movement assisting system assists in the user to finish actions according to user action information acquired by the information acquiring system. The sensing type movement assisting bed has the beneficial effects that pressure change caused by autonomic activities of the movement assisting bed user is sensed by a pressure sensor on a supporting device, and a movement assisting system is triggered to finish actions in an assisting manner; autonomic activities of muscles are encouraged, and the muscles are exercised effectively; according to human body behavior identification, the patient can be assisted to finish various actions, pressure is automatically adjusted and supported, and the comfortable degree of the human body and functional positions are maintained; the supporting device on the outer side of a pressed portion is higher than the plane of the body of the user to limit movement of the body of the patient, and the user is prevented from falling to the ground; a certain gap is maintained between pressed bottoms of the supporting device and a rectangular component so as to facilitate air circulation, moist of the pressed portion is avoided, and dangerous factors of pressure sores are relieved; and load of medical workers is relieved.

The invention discloses a high-altitude working platform for line construction. The high-altitude working platform comprises a supporting framework and a vertical hoisting platform mounted on the supporting framework, wherein a first platform plate, a clamping rod and a high-altitude working vehicle are arranged at the top of the vertical hoisting platform; the high-altitude working vehicle is detachably connected with a vertical hoisting platform through the clamping rod; a lead wire suspension wheel is arranged at the top of a frame; an anti-releasing mechanism is arranged under the lead wire suspension wheel; a second platform plate and a supporting plate are arranged under the first platform plate; the supporting plate is provided with a traction device and a traction frame; the second platform plate is provided with a strip-shaped opening; a traction wire winds around a guide wheel and a groove wheel and penetrates through the strip-shaped opening to be connected with a lead wire; and the second platform plate is used for supporting a second vertical rod of the first platform plate, and the second vertical rod is provided with a retractable ladder. The high-altitude working platform for the line construction has the beneficial effects that the high-altitude working platform can replace manual traction, the labor intensity of constructors is reduced, the safety of the high-altitude working vehicle is high, the construction time is shortened and the working efficiency is improved.

The invention relates to the technical field of environment protection science and technology, in particular to an environment-friendly type LED lamp holder convenient to fix and stable in power supply. The environment-friendly type LED lamp holder convenient to fix and stable in power supply comprises a lamp holder. A first spring is fixedly connected with the inner top wall of the lamp holder. The bottom of the first spring is fixedly connected with an electric conduction post. The inner walls of the two sides of the lamp holder are fixedly connected with electromagnetic devices. The two sides of the lamp holder are both fixedly connected with second springs close to the inner sides of the electromagnetic devices. According to the environment-friendly type LED lamp holder convenient to fix and stable in power supply, by means of cooperative use of a suspension groove and a chuck, a lamp is directly inserted into the bottom of the lamp holder in installation, since suspension is in the liquid state when not electrified, the chuck of the lamp can squeeze a rubber sleeve towards the two sides, the lamp is clamped into the lamp holder, and the top of the lamp is electrically connected with the electric conduction post; meanwhile, since the chuck is larger than the inner diameter of the rubber sleeve, the lamp can be prevented from falling, and the convenient installation effect is achieved; and the environment-friendly type LED lamp holder convenient to fix and stable in power supply simplifies the installation step and lowers danger coefficient of installation.

The invention relates to the technical field of hydraulic test equipment, in particular to a multifunctional hydraulic comprehensive test bench, comprising a platen. A groove is formed on the upper surface of the platen. A first bearing is though provided on the middle of each of the two sides of the inner wall of the groove. An adjusting rod is rotationally provided between the two first bearings. A pressure sensor is fixedly mounted at each of the four corners of the upper surface of the movable plate. A supporting plate is fixedly mounted on each of the two ends of one side of the upper surface of the platen. A top cover is fixedly mounted on the upper end of each of the supporting plates. A hydraulic push rod is fixedly mounted at the middle of the lower surface of the top cover. A pressing plate is fixedly mounted at the lower end of the hydraulic push rod. Four positioning mechanisms are fixedly mounted on one side of the upper surface of the platen. A placing plate is fixedly mounted among the four positioning mechanisms. A mounting groove is formed on the upper portion of one side of the fixed block. A second sliding groove is fixedly mounted on each of the two sides of theinner wall of the mounting groove. According to the multifunctional hydraulic comprehensive test bench, a test piece can be fixed and adjusted, the operation is simple, the use is convenient and thepracticability is high.

The invention provides a preparation method for a whisker carbon nanotube-reinforced aluminum matrix composite coated with aluminum oxide. The preparation method comprises the steps that a whisker carbon nanotube coated with aluminum oxide is prepared firstly, then aluminum alloy powder is guided into turbid liquid of the whisker carbon nanotube coated with the aluminum oxide, so that a mixture is obtained, the mixture is dried in a vacuum mode at the temperature of 50-100 DEG C and then guided into a ball-milling crucible so as to be ball-milled under argon protection; the mixture is cold-pressed into a prefabricated block under the pressure of 60-150 MPa; the prefabricated block is placed in a die, the die is heated at the heating rate of 5-10 DEG C/min till the temperature of the die is 10-20 DEG C below the solid phase line, then the die continues to be heated at the heating rate of 1-5 DEG C/min and the solid phase rate of the die is controlled to 70%-90%, and thus the multi-wall carbon nanotube-reinforced aluminum matrix composite coated with pure copper is obtained. The preparation method has the advantages of being simple, safe, low in cost, easy to operate, controllable and the like.

The invention discloses a shell explosion point positioning system and positioning method. The positioning system comprises a receiver unit, an environment parameter collecting unit, a central processing unit and a wireless communication unit. The receiver unit comprises four receivers distributed in a four-point isometric array mode, the receivers and the environment parameter collecting unit are connected to the central processing unit, and the central processing unit is connected to an upper computer unit through the wireless communication unit. The four-point isometric array receiver unit is adopted to collect subsonic signals of shell explosion, the subsonic signals are subjected to preprocessing to be converted into digital signals, and time identification is endowed to each fragment of digital sonic signals. Signal waveform converting and interference and noise removing are finished, the time difference existing when shell explosion sound waves are transmitted to the receivers is extracted, the coordinates of the shell explosion point are worked out according to a mathematical model, and the specific position of shell explosion is positioned. By means of the shell explosion point positioning system and the positioning method, safety of human operation can be improved, the danger coefficient can be reduced, and the operation effect can be improved.

The invention provides stainless steel washed white solution, which uses water as solvent, every one liter of the solution comprises 4-10 percent of nitric acid, 10-40g phosphoric acid, 2.5g boric acid, 5-30g acetic acid, 10-30g ammonium sulfate, 10-30g trisodium phosphate and 15-35g ammonium bifluoride. The method of using the stainless steel washed white solution to do the washed white process of the surface of stainless steel has the technological processes of pretreatment, degreasing, pickling, washing white, washing and baking, wherein after the stainless steel which is needed to be washed white is pretreated, degreased and pickled, the stainless steel which is pickled is put into the stainless steel washed white solution for 10-35 minutes in 55-85 DEG C, at last through washing and baking, the surface of the stainless steel is formed with an uniform silvery film layer which has a sand surface effect.

The invention discloses an emergency control method with failure of an anemorumbometer of a wind generating set. The emergency control method comprises the following steps of: (1), taking all units in a wind field as a centre, and forming a small network through an SCADA (Supervisory Control and Data Acquisition) system of the wind field and three units closest to the position of the SCADA system; (2), when the units are operated normally, feeding collected wind speed and wind direction signals back to a central controller through the SCADA system, and displaying various real-time information in real time; (3), when the anemorumbometer of the units is failed, reporting to the central controller at first, carrying out heterochromous display at an obvious position by the central controller, and giving an alarm to monitoring personnel; and (4), meanwhile, starting emergency control programs at corresponding functional positions in a fan control program, applying for reading wind speed/direction information from the SCADA system by a fan controller, if application is not successful, stopping; if the application is passed, sending instructions to the units according to data read in the SCADA system, and maintaining operation of the units till maintainers maintain a fan to exclude faults.

The invention discloses a reinforced concrete structure reverse dismounting temporary supporting conversion device and an operation method thereof, and belongs to the technical field of building reverse dismounting. The device comprises jacks, bearing plates, short post connecting elements, supporting short posts and L-shaped steel, wherein the jacks, the bearing plates, the support short posts and the L-shaped steels form temporary support structures; a pair of temporary support structures are arranged at the two sides of a structure post; the vertical bearing force transmitted by the structure post is replaced; the bearing capability of the reinforced concrete structure post and a structural beam is sufficiently used, so that the vertical load is transmitted onto the temporary support structures through the structural beam; the bearing force is reasonably converted; and the safety in the reverse dismounting process is ensured. The support short posts are mainly used for bearing the vertical load; the support short posts are detachably spliced and can be repeatedly used; and a part of dismounting cost is reduced. The bearing plates are used for uniformly converting the vertical support force and ensuring the vertical support effects. Through the vertical direct conversion of the force, the stress is direct and safe.