118results about How to "Solve world problems" patented technology

The invention relates to an automatic grass discharging passage cleaning mechanism of a rear shaft of the bottom of a mower, i.e., a lawn mower which is applied to the lawn pruning of places such as courtyards, parks and road sides. The automatic grass discharging passage cleaning mechanism can be applied to multiple models such as a three-wheeled mower, a series-excited-machine electric mower and a lawn mower, wherein the three-wheeled mower is provided with a grass mowing head, and a front single wheel of the three-wheeled mower is adjusted upwards in a manner that gear engaging is carried out through turning an angle by a flat bar; the series-excited-machine electric mower is provided with a chassis, an anti-collision safeguard and a tape-function wave-disc brake; and the lawn mower comprises an anti-collision safeguard, a tape-function wave-disc brake, a grass blockage poking device and a grass crushing preventer, wherein the anti-collision safeguard is arranged at the front of a chassis of the mower, the tape-function wave-disc brake is arranged at the middle part of the chassis of the mower, and gears of the grass blockage poking device and the grass crushing preventer are driven by an electric motor. The automatic grass discharging passage cleaning mechanism is mounted on the rear shaft of the bottom of the mower. The automatic grass discharging passage cleaning mechanism of the rear shaft of the bottom of the mower comprises grass discharging blades (j1) and direction-changing bevel gears (j2), so that the rotating and direction changing of the grass discharging blades are facilitated.

The invention discloses a self-air-supply ash-filtering cooling silencing closable fireproof tall building with a solar warming water heater. An air supply system consists of a blind window with self-cleaned glass, a spraying water pipe, an air inlet main pipe which extends to an underground garage and then is sealed at a roof, air inlet branch pipes and valve covers which extend to each room, a stainless wind energy fan which extends from the underground garage to a place which is 6 m higher than the roof or a pipe orifice with a rain shade, an air exhaust main pipe of which the lower end is sealed, and air exhaust branch pipes and the valve covers which extend to each room. A heat preservation system consists of an internal door, windows, rolling gates which are arranged outside the windows, anti-theft fences, a heat preservation layer which is arranged on the external wall, an air relative isolation layer which is arranged outside the heat preservation layer, and a ceramic partition wall which is arranged outside the air relative isolation layer. Preferably, the solar warming water heater which is arranged on a shelf is connected with an indoor electric water heater and metal pipes under the floor to form a heat collection system. The invention has the advantages that: a livable environment which is dustless, quiet, warm in winter, cool in summer and fresh in air is created; and when a fire alarm is given, the doors, the windows, air inlet pipelines and air outlet pipelines are closed to eliminate a chimney effect, and with no need of escaping, people can wear gas masks, carry oxygen bottles and hold fire extinguishers to effectively extinguish fire.

An aerial wind-energy power-station aircraft relates to the technical field of engineering such as manufacture of power-driven aircrafts, aerial wind power and photoelectricity, aerial transportation and military affairs. The aircraft comprises an aircraft body (1) or a buoyancy lift body (20), a control system (4) and a propelling system (5). The aircraft is characterized in that the aerial wind-energy aircraft also comprises an aerial wind power generation system (2), a storage system (3) of power electric energy and a grounding and water-connecting system (6), wherein the power propelling system (5) comprises an electric propelling flight system (5.1). When the grounding and water-connecting system (6) is connected to an easy-to-connect ground object (12), an aerial fixation aircraft device (13) and a water body (14), the system stays at a stationary state and can start aerial wind-power generation. When the storage system (3) of the power electric energy is filled with aerial wind electricity, the electricity can then be supplied to the electric propelling flight system (5.1), so that flight can be driven. In this way, no fuel is consumed, and the flight can be implemented by ''aerial wind energy and wind electricity''. The aircraft has a very low cost; and by the storage system (3) of the power electric energy or the aerial fixation aircraft device (13), the aerial wind electricity with the very low cost can also be conveyed to the ground for utilization.

The invention discloses a tubular type double-annular channel double-sided heat-exchange large-flux microchannel reactor. The reactor is sheathed in a tube (2) through an isolating sleeve (3), a middle sleeve (4) is further sheathed in the isolating sleeve (3), two annular clearance microchannels are respectively formed between the isolating pipe (3) and the tube (2) and between the isolating pipe (3) and the middle sleeve (4), and the space of the annular clearances is 0.05-5mm. By adopting the tubular type annular microchannel, the section area of the microchannel is increased by orders of magnitude, the large-flux difficulty of the microchannel reactor can be solved, so that the microchannel reactor is widely applied in chemical industry, and the high-risk technology status of the currently chemical synthesis can be thoroughly changed, the safety can be greatly enhanced, and the environmental pollution can be effectively decreased.

The invention discloses an alkali residue-based cement gel material and relates to a building material of a waste composition in alkaline industry. The building material is a composition which is prepared from 40-60% by mass of alkali residues, 40-60% by mass of coal ash and 10-20% by mass of an active agent based on total mass of the alkali residues and coal ash. The alkali residue-based cement gel material is prepared by the following steps: firstly, uniformly mixing the alkali residues in required use level by a regulated mass percent and coal ash; then, adding 10-20% by mass of active agent based on total mass of the mixture; and then uniformly stirring to obtain the alkali residue-based cement gel material which is an alkali residue geopolymer prepared from large-dope waste alkali residues. The alkali residue geopolymer which replaces cement is used for related projects such as a waterproof curtain of a mine, so that not only is the defect that the cost is high and the environment is indirectly and severely polluted due to cement used in the existing gel material solved, but also a lot of waste alkali residues are effectively utilized, thereby turning wastes into wealth.

The intelligent lawn mower with the charging component of the automatic charging pin inserted and pulled out of the contact piece can be automatically plugged and unplugged for charging; just like a car needs a gas station, an electric lawn mower also needs a charging station, and the market needs an automatic charging pin inserted and pulled out The intelligent lawn mower with the charging assembly of the contact piece solves the problem of frequent manual charging due to the undurable battery; the left and right sides of the bottom plate laid horizontally on the ground are respectively provided with guide rails (233c The curve section of each guide rail of ) is a cubic curve, so as to reduce the impact; a section of curve of the contact surface ((234b) of the contact piece (234) is a logarithmic spiral, because the logarithmic spiral is an equiangular spiral with pressure The characteristics of being equal everywhere at the corners are beneficial to contact insertion. There are four contact pieces (234), pressure piece torsion springs (234a) and rotating shafts each, forming double doors facing each other, corresponding to the charging pins standing on the front wall in front ((233), so that the charging pin is inserted and extracted, reciprocating with this. The use of cubic curves for the guide rail and the use of logarithmic spirals for the contact surface are technical progress.

The invention provides a special unmanned helicopter for high-rise and mountain forest extinguishment, which can be loaded on a matched firefighting truck to be transported to a fire scene. The creative system design of the unmanned helicopter different from a conventional helicopter is characterized in that the helicopter carries a pipeline connected with the ground to lift off and fly in a kite string pulling mode, so that electric motors powered by cables connected with the ground can be utilized to drive the helicopter to lift off and fly, electronic control wire cables connected with the ground are utilized to drive the helicopter to fly under wired remote control, the helicopter starts to spray water and put out a fire when flying to the position requiring extinguishment, and a fire-fighting lance of the helicopter sprays high-pressure water for extinguishment through continuous water supply of a hose connected with a high-pressure water supply firefighting truck on the ground. The purpose of timely extinguishment of high-rise and mountain forest fire disasters is achieved, the worldwide problem that the high-rise extinguishment is difficult to implement due to the fact that the firefighting height of all conventional firefighting equipment is lower than 100 m is effectively solved, so that the safety of high-rise residents is guaranteed, the high-rise residents live safely, the tragedies such as U.S. 911 fire, Shanghai high-rise fire and the like do not happen again, and high-rise and mountain forest extinguishment is not difficult.

The invention discloses a cheese dyeing method for aramid yarns or aramid sewing threads. The cheese dyeing method comprises the following steps of: boiling off the aramid yarns or the aramid sewing threads subjected to cheese winding for 10 minutes by using a degreasing agent with the concentration being 3g/L and triester phosphite with the concentration being 2g/L at 90 DEG C according to a bath rate of 1:10; dissolving dyes in a dye vat and heating to 60-80 DEG C, then adding corresponding vectors into the dye vat, putting the aramid yarns or the aramid sewing threads into the dye vat after running for 5-10 minutes, then carrying out boiling dyeing for 60 minutes, raising the temperature in the dye vat to 130 DEG C after the boiling dyeing, preserving the heat and dyeing for 30 minutes, and carrying out color fixing for 30 minutes; and washing, dehydrating and drying the aramid yarns or the aramid sewing threads subjected to color fixing to obtain dyed aramid yarns or aramid sewing threads. According to the cheese dyeing method, the worldwide problem that fluorescent fiber cannot be produced by dope dyeing aramid is solved.

Provided is an electric mower provided with a logarithmic spiral brake achieving automatic braking protection and a series excitation motor. The mower is provided with the anti-collision safety logarithmic spiral brake. Four assemblies are added to a common lawn mower and comprise the support assembly of a storage battery provided with a charger and an inverter, the cutting device assembly dragged by the series excitation motor, the pipe winder assembly and the brake assembly. The mower comprises an anti-collision protector arranged at the front portion of a mower chassis, the brake arranged in the middle of the mower chassis, a grass pruning head and a pipe winder. When a front article collides with outer wrapping rubber skin of a movable support and a sliding rod of the movable support retracts, a limit switch is triggered, and anti-collision is achieved. The electric mower has the advantages that the logarithmic spiral brake achieving automatic braking protection enhances the anti-collision safety and braking effect, grass cutting and grass pruning can be selected, and the movement area is large.

The invention belongs to the safe nondestructive detection technology field, and in particular relates to a railway micro-magnetic flaw detector and an inspection method. A micro-magnetic defect magnetic charge mutation detection principle is adopted by the railway micro-magnetic flaw detector to make the defect detection realized. The railway micro-magnetic flaw detector consists of a magnetic sensor device, a signal preprocessor, an A/D converter and a computer system. The magnetic signals leaked because of defects are detected by the sensing device, converted into electric signals and input into the signal preprocessor. The signals are amplified, filtered and purified by the signal preprocessor, transmitted into the A/D converter and are transformed into digital signals. Then, digital filter, signal analysis, defect estimation, defect calculation and display record are implemented on the signals by the computer and are controlled by the computer to detect defects. The flaw inspection method is used for detecting the railway damage defect. The defect detection reliability is two times higher than a traditional nondestructive method. And the working efficiency is improved by five times. At the same time, a worldwide problem that no effective method can be used for turnout inspection at present is solved.

The invention discloses a three-wheel lawn mower having a trimmer head and being capable of heightening a single front wheel with a flat rod to rotate angle changing gears. The lawn mower adopts three wheels, and one wheel of a common four-wheel lawn mower is omitted, so that turning and reversing are more flexible. The three-wheel lawn mower is characterized in that a plurality of angle rotatable changing gears (t7j) are arranged on the wheel carrier (t7); the flat rod (t2) with a handle (t2k) is mounted on the center of a circle, wherein the rotation of the angle rotatable changing gears is based on the center; and a flange (t2j) is arranged on the flat rod (t2), so that the flat rod (t2) with the handle (t2k) can be operated to coordinate with an optional changing gear (t7j) of the angle rotatable changing gears (t7j), and a rollable single front wheel (t1) on the horizontal axis of the front wheel (t4) is heighted with the change of the height between the chassis of the lawn mower and the ground, so that the mowing height can be changed.

The invention discloses a multi-stage self-collapsing closed headwork and belongs to the technical field of hydro project headworks. The multi-stage self-collapsing closed headwork can resist flood exceeding the designed level, is simple in structure, convenient to implement and low in construction cost and does not occupy space permanently. The problem that headworks are damaged by flood exceeding the designed level is solved through the disaster prevention and mitigation design theory of the multi-stage self-collapsing closed headwork. The structure of the multi-stage self-collapsing closed headwork comprises a flood discharge bottomland (2-2), an earthy embankment (3), a geotechnical synthetic material armour earthy flood diversion dyke (4), a geotechnical synthetic material protecting multi-stage self-collapsing earth embankment (5), an intake gate (6), a barrage gate (7), a rockfill dam (8), an earthy barrage (9), flood diversion farmlands (10), a gulch (11), rope system non-woven fabric grid bands (12) and a rope system non-woven fabric bottomland locking penetrating band (13). The structure is suitable for closed headworks with the bottomland, headworks with rockfill dams, open headwork bottomland treatment and headworks with flood exceeding the designed level outside the embankment farmland for flood diversion.

The improved intelligent lawn mower with automatic charging pin insertion and extraction of the contact piece assembly can be automatically plugged and unplugged for charging; the pin ball (233a) provided at the root of the charging pin (233) is provided with a cross pin on the spherical seat, It solves the problem of reliable plug-in and plug-in charging with micro-volume follow-up. Just as a car needs a gas station, an electric lawnmower also needs a charging station. The curve section of each guide rail of the base plate laid on the ground surface is a cubic curve, so as to reduce the impact; the contact surface of the contact sheet (234) (234b) A section of curve is a logarithmic spiral, because the logarithmic spiral is that the equiangular spiral has the characteristics that the pressure angle is equal everywhere, which is beneficial to contact insertion. There are four contact pieces (234), pressure sheet torsion springs (234a) and rotating shafts. Form face-to-face double doors, corresponding to the charging pin ((233) standing on the front wall in front, so that the charging pin is inserted and pulled out, reciprocating in this way; the guide rail uses a cubic curve and the contact surface uses a logarithmic spiral .

Provided is a mower with the functions of irrigating, fertilizing, pesticide spraying and automatic anti-collision logarithmic spiral braking. The mower is a multifunctional mower provided with an anti-collision safety logarithmic spiral brake and a pipe winder with a liquid pipe for irrigating, fertilizing and pesticide spraying. Four assemblies are added to a common lawn mower and comprise the support assembly of a storage battery provided with a charger and an inverter, the cutting device assembly dragged by a series excitation motor, the pipe winder assembly achieving the functions of irrigating, fertilizing and pesticide spraying, and the brake assembly. The functions of irrigating, fertilizing and pesticide spraying are added, the use range is wide, and the movement area is large. Liquid fertilizer used for fertilizing and contained in the pipe of the pipe winder is obtained by adding soluble fertilizer to water percentagewise. Alternatively, liquid fertilizer used for pesticide spraying and contained in the pipe of the pipe winder is obtained by adding soluble pesticides to water percentagewise.

The invention provides a cold starting system of an alcohol fuel engine. The cold starting system comprises an alcohol fuel supplying system, a cold starting fuel supplying system, an oil track and a control system. The cold starting fuel supplying system is communicated with one end opening of the oil track. The alcohol fuel supplying system comprises an oil inlet pipeline and an oil returning pipeline which are both communicated with the other end opening of the oil track. The control system controls opening of the alcohol fuel supplying system or the cold starting fuel supplying system and controls delaying closing of the oil retuning pipeline in the alcohol fuel supplying system when the cold starting fuel supplying system is opened. The oil inlet mode of the oil track is designed to be a two-in-one-out oil opening quick-connecting mode, the control system is used for carrying out delaying control over the oil returning pipeline, all alcohol fuel in the oil track flows back out of the oil track quickly, it can be ensured that all fuel is gasoline for starting the vehicle, mounting is quick, cost is low, production is easy, the engine is not modified, and the worldwide problem of alcohol fuel vehicle cold starting is completely solved.