45results about How to "Meet the needs of the working environment" patented technology

The invention discloses a gun head of a fire-fighting water cannon. The gun head comprises a gun head shell, an inner nozzle, a spray core, a first flow stabilizer and a second flow stabilizer, wherein the gun head shell is internally provided with a water flow channel; the first flow stabilizer is arranged at the water flow inlet of the gun head shell, the second flow stabilizer abuts against theinterior of the gun head shell through the inner nozzle, the spray core is arranged at the water outlet of the gun head shell, and the tail end of the spray core is inserted into the inner nozzle; the head end of the inner nozzle is provided with an inclined outlet, wherein the outlet area of the inclined outlet is gradually enlarged along the spraying direction, the head end of the spray core can block the inclined outlet, and an elastic part is arranged inside the spray core; the spray core can overcome the elastic force of the elastic part and move relative to the water flow channel when being subjected to the water pressure action, so that the overflowing area of the water outlet is changed; and the structure of the double-flow-stabilizer enables the water flow to be more stable whenthe water flow is sprayed out of the fire-fighting water cannon, the water spray flow cannot be dissipated, and the range and the shooting height of the fire-fighting water cannon are improved; and the self-adaption of the size of the opening is achieved under the action of the water pressure and the elastic part, so that the self-adaptability of the water cannon can be better.

The invention discloses a relieved tooth and a preparation method thereof, and the relieved tooth and the preparation method disclosed by the invention can be used for solving the problems of poor abrasion resistance and impact property of an existing relieved tooth. The relieved tooth disclosed by the invention comprises the following compositions in percentage by weight: 0.29%-0.33% of C, 0.90%-1.40% of Mn, 0.8%-1.20% of Si, 1.40%-1.70% of Cr, 0.001%-0.005% of B, 0.02%-0.06% of Al and the balance of Fe. The invention provides the preparation method for preparing the relieved tooth, and the preparation method comprises a casting process and a thermal treatment process. The relieved tooth disclosed by the invention is good in mechanical property, high in hardness, high in tensile strengthand high in tenacity and can meet the special working environment requirements of a loader.

The invention discloses a toothholder and a manufacturing method thereof, and is used for solving the problem that the traditional toothholder has poor mechanical property and welding property. The toothholder disclosed by the invention comprises the following components by mass percent: 0.19-0.22% of C, 0.80-1.10% of Mn, 0.30-0.60% of Si, 0.30-0.60% of Cr, 0.02-0.06% of Al and the balance of Fe and inevitable impurities. The invention also provides a manufacturing method for manufacturing the toothholder; and the manufacturing method comprises a founding process and a heat treatment process.By adopting the manufacturing method provided by the invention, the mechanical property of the toothholder is greatly improved, and the welding property of the toothholder can satisfy the toothholderdemand.

The invention provides an inter-plant electrically driven hoeing control system for an electrically driven hoeing machine according to the demand for mechanical hoeing of a greenhouse. The system uses an MC9S12XDG128 double-core single chip microcomputer as a hardware core, and integrates real-time signal input of a Hall sensor and a rotary encoder, visual information, received in real time, of an upper computer (PC) is interrupted through an RS232 serial port, real-time communication with a lower computer (electric motor driver) is performed by adopting a CAN bus, the rotating speed and a rotating angle of a disc hoe knife are controlled in real time, and accordingly inter-plant hoeing and seedling avoidance are achieved. A hoeing test result in the greenhouse indicates that the advancing speed is 1.2 km/h, and the seedling damage rate is lower than 10%.

The invention provides a preparation method and application of a polytetrafluoroethylene film for an unmanned aerial vehicle. The method comprises the steps that firstly, polytetrafluoroethylene powder and compound solvent with specific components are mixed evenly, constant-temperature curing, compression moulding forming, high-temperature heat treatment, rapid cooling, slicing and plasma modification treatment are sequentially performed, and then the polytetrafluoroethylene film is prepared. The polytetrafluoroethylene film has the very high light transmittance, and the light transmittance can be more than 90.5 percent under 300-1200 nm. In addition, the prepared polytetrafluoroethylene film further has the good high temperature resistance, wear resistance, weather resistance and mechanical property, so that the polytetrafluoroethylene film for the unmanned aerial vehicle can be suitable for various extreme conditions to which the unmanned aerial vehicle is likely to face and completely meet the working environment requirements of the unmanned aerial vehicle.

The invention discloses a bunker cleaning mechanical hand and a coal bunker blockage cleaning robot. The bunker cleaning mechanical hand comprises a base, a mechanical hand arm and scrabbling devices.The base, the mechanical hand arm and the scrabbling devices are connected in sequence from top to bottom. A first rotation driving mechanism which is used for driving the mechanical hand arm to rotate in the horizontal direction is installed in the base. A second rotation driving mechanism which is used for driving the mechanical hand arm to swing in the vertical plane is arranged at the upper end of the mechanical hand arm in a matched mode. The scrabbling devices are installed at the lower end of the mechanical hand arm and horizontally arranged. Third rotation driving mechanisms which areused for driving the scrabbling devices to rotate around the axes of the scrabbling devices are arranged in the scrabbling devices. Sharp spine portions which are used for cleaning a hardened coal layer away are arranged on the surfaces of the outer sides of the scrabbling devices. The bunker cleaning mechanical hand has three degrees of freedom, is light, exquisite and compact in structure, canrapidly respond to a control instruction, and improves the production efficiency advantageously. The bunker cleaning mechanical hand is utilized and enters a coal bunker to conduct cleaning, and therefore the safety and the high efficiency of the cleaning operation are guaranteed.

The invention discloses a carbon dioxide heat pump air conditioning system based on solar power generation defrosting, which comprises a solar power system and a carbon dioxide heat pump air conditioning system, wherein the solar power system comprises a solar panel, an electricity storage device, an LED lamp and a defrosting device, wherein the solar energy is utilized to generate electricity, and defrosting and lighting are reasonably distributed through the electricity storage device. The carbon dioxide heat pump air conditioning system comprises an evaporator, a condenser, an expansion valve and a compressor, wherein each of the evaporator and the condenser is provided with a pulsating heat pipe with a communication path, so that the heating effect in winter and the refrigeration effect in summer are strengthened. The carbon dioxide heat pump air conditioning system uses carbon dioxide as a working medium, and has the advantages of energy conservation and environmental protection and low operation cost. Each of the condenser and the evaporator adopts the pulsating heat pipe of a communication structure, and the main breakthroughs in two aspects are as follows: the first is theoptimization of the communication structure of the pulsating heat pipe, so that an effect of strengthening the heat transfer is achieved; and the second is the change of a placement inclination angleof each pulsating heat pipe, so that the complicated and changeable working environment requirements can be met. Therefore, the power consumption of the whole air conditioner can be reduced, the heatexchange efficiency is increased, the energy utilization rate is improved, and the energy conservation and emission reduction are realized.

The invention provides a dual motor and a fan with a dual motor, and aims to solve the problem that the functions of a conventional motor and a fan are always the same. The dual motor comprises a first motor, which comprises a first stator and a first rotor; a second motor, which comprises a second stator and a second rotor; a positioning assembly, which comprises a central shaft that penetrates the first motor and the second motor; and a driving circuit, which is electrically connected to the first stator and the second stator. The first rotor and the second rotor are rotatingly combined withthe central shaft. The first stator and the second stator are fixedly combined with the central shaft. The first rotor comprises a first permanent magnet set. The second rotor comprises a second permanent magnet set.

The invention discloses a signal grasping and state analyzing method based on a chip of a non-contact smart card. The method comprises the following steps: before the non-contact smart card sends data or performs operation processing, writing data to be sent and state information of the non-contact smart card into storage device of the non-contact smart card via an operating function of the storage device; and monitoring the non-contact smart card once the non-contact smart card goes wrong in practical use, and reading all information from the storage device for analysis when the chip of the non-contact smart card is re-electrified. The method is low in cost and high in accuracy.

The invention discloses a sand core with a specific exhaust structure. The sand core with the specific exhaust structure comprises a metal wire framework, a high-temperature-resistant exhaust fiber pipe and a sand layer. The high-temperature-resistant exhaust fiber pipe sleeves on the periphery of the metal wire framework; a pipe wall of the high-temperature-resistant exhaust fiber pipe has breathability; and the sand layer is cured to coat on the periphery of the high-temperature-resistant exhaust fiber pipe. A preparation method of the sand core comprises the steps of forming the metal wireframework; assembling the high-temperature-resistant exhaust fiber pipe; and forming the sand core. According to the sand core with the specific exhaust structure and the preparation method thereof provided by the invention, an exhaust effect of the sand core is improved, the defect caused by a reaction gas on a casting piece is reduced, the quality and the acceptability of the casting piece is remarkably improved, and the production cost is effectively reduced. The high-temperature-resistant exhaust fiber pipe is adopted, and the pipe wall of the high-temperature-resistant exhaust fiber pipehas breathability, so that the exhaust effect is more remarkable, and a high-temperature-resistant performance meets a working environment requirement. The metal wire framework can shape and support the high-temperature-resistant exhaust fiber pipe, so that integral type pre-embedding is realized. The preparation method of the sand core is simple, easy to operate, and suitable for popularization and application.

The invention discloses a foldable magnifying glass lamp. It has a lamp head, an arm and a base clamp. The lamp head includes an upper shell of the head, a lower shell of the head, a lighting assembly and a magnifying glass lens. The lighting assembly is installed between the upper shell of the head and the lower shell of the head. The shell and the lower shell of the head are fixed, and the support arm includes the upper chuck, the upper pull rod, the middle chuck, the lower pressure rod, the lower chuck and the wire, the lamp head, the upper chuck, the upper pull rod, the middle chuck, the lower pressure rod, the lower The chuck and the base clip are connected in turn, the wire is placed inside the upper pull rod and the lower pressure rod, one end of the wire is connected to the lighting component, the other end of the wire is provided with a power jack, and the wire is pluggably connected to the power supply through the power jack. The base clamp includes a clamp frame and a fastening component, and the fastening component is installed on the clamp frame. The beneficial effects of the invention are: long service life; reliable structure, not broken during use; small volume, frameless design; low energy consumption; no pollution, green and environment-friendly.

Disclosed is a composite gear motor generator. The composite gear motor generator is characterized in that a pinion (5) is connected with a pinion shaft (6) through a round key (17); a crescent body (18) is mounted between the pinion (5) and an inner gear (8); a spring (4) is mounted between a motor cover plate (1) and a baffle (3); the baffle (3) is in direct contact with a motor side plate (9),so that the motor side plate (9) and the motor side plate (16) can tightly press the inner gear (8) and the pinion (5); the pinion shaft (6) passes through a small bearing (7); a small bearing (15) supports the motor side plate (9), the motor side plate (16) and the shell (2); the inner gear (8) is supported on the shell (2) through a large bearing (11) and a large bearing (12); a coil (13) in a power generation assembly is installed between the large bearing (11) and the large bearing (12) and is fixed with the shell (2); and a permanent magnet (14) is fixed with the inner gear (8).

The invention provides a front packaging membrane of a solar battery and application thereof. The front packaging membrane comprises a teflon modified membrane, a MgF2 thin film, a TiO2-ZrO2-La2O3 mixture film, and a AL2O3 film, wherein the MgF2 thin film, the TiO2-ZrO2-La2O3 mixture film, and the AL2O3 film are successively formed on the teflon modified membrane by vapor plating. The teflon modified membrane is used as a base of the front packaging membrane of the solar battery and thus the high light transmitting rate is realized, wherein the light transmitting rate under the 300 to 1200nm can reach over 90.5%. Moreover, the front packaging membrane has excellent high-temperature-resistant, wearing-resistant, and weather-resistant performances and good mechanical property, so that the membrane can adapt to various extreme conditions that may be faced by an unmanned aerial vehicle, so that the working environment requirements of the unmanned aerial vehicle can be met completely.