41results about How to "Meet the needs of the job" patented technology

The invention belongs to the field of alloy material, relating to no-co ferrous alloy, in particular to no-co ferrous alloy for enhancing material of the sealing face of a nuclear power valve. The no-co ferrous alloy powder composition contains the following ingredients by weight percent: 20.5%-21.5% of Cr, 3.0%-3.5% of Ni, 3.0%-3.5% of Mn, 2.0%-2.5% of Si, 0.9%-1.0% of C, 1.5%-2.0% of Mo, 0.7%-1.2% of W, 0.3%-0.5% of V, P is less than or equal to 0.02%, S is less than or equal to 0.02%, 0.5%-1.0% of Y and the balance of Fe. The no-co ferrous alloy powder composition contains no noble metal of Co, at the same time, since laser cladding technology is adopted to prepare the coating, the microhardness of the cladding layer is 1.6-1.8 times of that the stainless steel matrix. The no-co ferrous alloy powder composition has excellent high-temperature abrasion performance and high-temperature corrosion resistance, so the no-co ferrous alloy powder composition can prolong the service life of the valve.

The invention discloses a nickel chromium alloy for a sealing face of a nuclear power valve. The nickel chromium alloy comprises the following components in percentage by weight: 26.0-28.0 percent of chrome, 2.0-2.5 percent of silicon, 1.1-1.3 percent of boron, 4.5-5.5 percent of molybdenum, 3.0-4.0 percent of tungsten, 0.9-1.1 percent of carbon and the balance of nickel. Meanwhile, a coating layer is prepared by a laser cladding technology so as to obtain a sealing face coating layer of a nickel-based alloy nuclear power valve, which has the following relevant parameters: the rigidity is HRC 42-46 which is slightly higher than HRC39-43 of a Stellite-6 cobalt-based alloy coating layer; the tissue grain fineness number of the coating layer is 11-12 grades which is superior to 9-10 grades of a general plasma jet welding layer and 8-9 grades of a flame resurfacing welding layer; and the width of a combination band of the coating layer and a basal body is 10-30 micrometers which is superior to 80-120 micrometers of a plasma jet welding combination band and 200-300 micrometers of a flame resurfacing welding combination band.

The invention discloses cobalt-free nickel-based alloy powder. The cobalt-free nickel-based alloy powder comprises the following components in percentage by weight: 1.0 to 1.2 percent of carbon (C), 24.0 to 28.0 percent of chromium (Cr), 4.0 to 6.0 percent of wolfram (W), 2.4 to 2.8 percent of silicon (Si), 6.0 to 10.0 percent of aluminum (Al), 4.0 to 6.0 percent of molybdenum (Mo), 0.8 to 1.0 percent of boron, 1.0 to 5.0 percent of yittrium oxide (Y2O3) and the balance of nickel (Ni). The alloy coating prepared by combining the formula of the cobalt-free nickel-based alloy powder with the laser cladding process has a compact structure and no defects, can be well and metallurgically combined with a nuclear valve substrate and has high wear resistance at a high temperature, so that the cobalt-free nickel-based alloy powder is particularly suitable for a nuclear valve sealing face and meets the requirements of the valve working in a nuclear environment.

The invention discloses a nickel-base alloy coating for a sealing surface of a nuclear power valve, and is characterized in that the nickel-base alloy coating is prepared according to a method of conducting laser-cladding on nickel-base alloy powder. The nickel-base alloy powder comprises the following constituents by weight percent: 20.0 to 24.0 percent of Cr, 4.0 to 4.2 percent of Si, 3.0 to 3.5 percent of P, 3.0 to 3.2 percent of Mo, 8.0 to 8.5 percent of Fe, 1.0 to 1.2 percent of C, 0.8 to 1.0 percent of yttrium oxide, and Ni in balancing amount. The laser-cladding process adopts a synchronous powder feeding method and a pre-coating method. The nickel-base alloy powder mixture contains no noble metal Co, thereby particularly meeting requirements on valves under nuclear environments; and due to the formulation design of the mixture, and the advantage of the laser-cladding technology in coating preparing, the coating on the sealing surface has a favorable high-temperature property.

The invention relates to anti-oxidant and wear-resistant surface protection grease for steel wire ropes. The surface protection grease consists of the following components in percentage by weight: 12-16 percent of palm wax, 17-20 percent of Duroc slack wax, 17-21 percent of naphthenic base extract oil, 22-26 percent of paraffin base high-viscosity oil, 2-5 percent of zinc dialkyl dithiophosphate, 1-4 percent of diphenylamine, 6-10 percent of polyisobutene, 7-11 percent of ethylene-propylene copolymer and 0.1-1 percent of calcium sulfonate. Compared with the prior art, the surface protection grease has the advantages of high dropping point, no softening or drain on hot weather, quick coagulation during coating, no waste of raw materials, no pollution on the operation environment (including use), high moving viscosity, high adhesion to the surfaces of steel ropes, and avoidance of the phenomenon of falling in a strong shocking state at a high temperature during operation. The more outstanding characteristic is that the neutral and weakly acid states of the conventional final products (including imported Elaskon) are turned into a weakly alkaline (NaOH is not more than 0.15 percent) state in which metals can pass a corrosion test. As the formation of acid substances can be neutralized effectively, SH/T0325 oxidation stability test and SH/T0332 corrosion test are passed excellently, the service lives of steel wire ropes are prolonged, and the production, storage and use environments are purified.

The invention provides a method and device for carrying out polishing through flowing of viscoelasticity abrasive materials with spiral complex curved surfaces and belongs to the field of mechanical equipment. The device comprises a machined screw rod, the abrasive materials, a sealing box, a fixing die, a gap and a screw rod drive device. One end of the machined screw rod is connected with the screw rod drive device, the other end of the machined screw rod is immersed into the abrasive materials, the screw rod drive device is installed on the upper portion of the sealing box, the fixing die is installed in the sealing box through a supporting rod, the abrasive materials are the viscoelasticity abrasive materials, and the fixing die is a tubular hollow die. When the screw rod drive device drives the machined screw rod to rotate at a high speed, the abrasive materials move upwards along the spiral surfaces; meanwhile, under restraining of the fixing die, the abrasive materials extrude the surface of the screw rod, polish the surface of the screw rod, and flow back to the sealing box after reaching the top end of the fixing die, so that polishing of a circulating type is achieved; according to the method and the device, the screw rod can be polished efficiently with high quality and uniformity.

The invention discloses an agricultural multifunctional elevation type work platform. The agricultural multifunctional elevation type work platform comprises a base, a suspension bar, a fixing shaft,wheels, crawler belts, a fixing base, a motor, a rotating shaft, gears, a rack plate, a yield hole, a connecting plate, an elevating chamber and a collecting basket. The agricultural multifunctional elevation type work platform is skillful in design and powerful in functionality; by means of the suspension bar, the agricultural multifunctional elevation type work platform can be conveniently fixedand mounted onto a tractor and then be driven by the tractor to move; through cooperation of a lifting mechanism, workers can conveniently work on high fruit trees. Therefore, the agricultural multifunctional elevation type work platform reduces the labor intensity for the workers, greatly meets the working demands in orchards and facilitates industrial promotion and application.

The invention discloses a tractor multi-section speed change gear, comprising a gearbox which adjusts the rotation speed which is output by the power device of the tractor under the control of an operation device; an input shaft, a first shaft, a second shaft and an output shaft are arranged in parallel in the gearbox body; the gearbox comprises a shift speed change gear which is connected with the power device of the tractor through the input shaft, a main speed change gear which is connected with the shift speed change gear through the first shaft, and an auxiliary speed change gear which is connected with the main speed change gear,by the second shaft. The gears which are provided by the invention meet the operation requirement of the tractor under various environments, furthermore, the gear shifting operation stroke is small, and the operation is convenient.

The invention discloses an emergent mobile power van for an offshore nuclear station. The emergent mobile power van comprises a van body and a mobile power case, wherein the front part of the van body is provided with a driving cab; the front part of the mobile power case is connected with the back part of the van body; a cable hoist, a control case a high voltage switch cabinet, an oil tank and a diesel oil generating unit are disposed in the mobile power case; the cable hoist, the control case and the high voltage switch cabinet are all arranged on the front end of the mobile power case and connected with the diesel oil generating unit; the oil tank is placed in the middle part of the mobile power case and communicated with the diesel oil generating unit; the diesel oil generating unit is placed on the back part of the mobile power case; and gaps for maintenance are preserved between the oil tank and the cable hoist, the control case and the high voltage switch cabinet, and between the diesel oil generating unit and the oil tank. The technical effects of the emergent mobile power van for the offshore nuclear station are that power can be supplied to the offshore nuclear station for emergent maintenance; and the power van can be easily maintained and meets requirements for offshore nuclear station work.

The invention relates to a coating containing trace photoinitiator. According to the invention, the main components of the coating are unsaturated polyester resin or acrylic acid type oligomer, acrylic acid monoester and polyester compounds as well as the photoinitiator, wherein the mass percentage of the photoinitiator is 0.1%-1%. The invention also provides a solidifying method of the coating. The solidifying method comprises the following steps: covering the coating on a substrate by using printing, spreading, roller painting and combination processes; irradiating the coating with ultraviolet light; and enabling the substrate to pass through a self-shielding electron accelerator which is located in the air atmosphere at the linear speed of 1-10 m/s, wherein the electron accelerator generates a low-energy electron beam to irradiate the coating so that the coating can be instantly solidified. The coating has the advantages that no odor emerges in the production process, trace residue of the photoinitiator in the coating can meet the requirement of food package, cost is low, and production efficiency is high; and the solidifying method is suitable for solidifying production of all-color coatings.

The invention provides a low voltage load test device. The low voltage load test device comprises an insulating rod, a clamp-shaped current transformer which is arranged at the top of the insulating rod, an ammeter which is arranged on the lower end of the insulating rod, and a handbrake which is arranged on the lower end of the insulating rod. The handbrake is connected with the clamp-shaped current transformer through a handbrake line to control the clamp-shaped current transformer to switch on and off. The clamp-shaped current transformer is connected with the ammeter through a current secondary line. The low voltage load test device has the advantages of scientific design, high work efficiency and high safety coefficient.

The invention discloses an orchard multifunctional lifting operation platform. The orchard multifunctional lifting operation platform comprises a chassis, a driving motor, a driving rotating shaft, adriving rotating wheel, a crawler belt, a fixed base, a first stepping motor, a first rotating shaft, a gear, a rack plate, a trigger plate, a sliding groove, a first travel switch, a second travel switch, a connecting plate, a connecting frame, a storage basket, a deflector, a second stepping motor, a second rotating shaft, a maneuvering desk, a connecting sleeve, a reinforcing sleeve and a softcushion. The orchard multifunctional lifting operation platform is ingenious in structure and powerful in function, firstly, through an electric driving mechanism, the platform can move in an orchard;secondly, through cooperation with a lifting mechanism, staff can pick and store fruits of different heights conveniently; and finally, through the platform, the orchard operation demands are greatlymet, and application and popularization in the industry are facilitated.

The invention discloses a plum blossom trimming mechanical arm, and relates to the technical field of mechanical arms. The mechanical arm comprises an extension rod, an angle adjusting mechanism, a trimming mechanism and a moving mechanism, the angle adjusting mechanism is arranged on the extension rod, the trimming mechanism is arranged on the angle adjusting mechanism and comprises a trimming conversion assembly, a first trimming assembly, a second trimming assembly and a limiting assembly, the trimming conversion assembly is arranged at the upper end of the angle adjusting mechanism, the first trimming assembly and the second trimming assembly are arranged on the two sides of the trimming conversion assembly respectively, the limiting assembly is arranged between the first trimming assembly and the second trimming assembly, and the lower end of the extension rod is fixedly connected to the moving mechanism. The mechanical arm has multiple working modes, the first pruning assembly and the second pruning assembly are arranged to prune branches of different sizes, the applicability of the mechanical arm is improved, and due to the arrangement of the limiting assembly, potential safety hazards in the pruning process can be avoided, and the pruning accuracy is improved.

The invention provides a wake-up signal generating circuit and a vehicle charging system.The signal triggering circuit comprises a first triggering module and a second triggering module, and when the first triggering module receives a falling edge signal, the time interval between the falling edge signal and a previous rising edge signal is larger than a first preset duration, the first triggering module outputs the pulse signal of the first level, and under other conditions, the second level is output; and when the second trigger module receives a rising edge signal, the time interval between the rising edge signal and the last falling edge signal is greater than a second preset duration, the second triggering module outputs the pulse signal of the first level, and in other cases, the second triggering module outputs the second level. Through the configuration, the wake-up signal is output at a proper time, the actual working requirement of the controller is met, and the problems that a charging wake-up circuit in the prior art cannot completely realize a better expected output signal scheme and cannot wake up the controller or enable the controller not to enter a sleep state under a specific working condition are solved.

The invention provides a transmission box, which comprises a box body internally provided with one input shaft and five driven shafts, and is characterized in that two toggling gears are arranged on the input shaft, three fixed gears and two toggling gears are arranged on the second driven shaft, five toggling gears are arranged on the third driven shaft, four fixed gears are arranged on the fourth driven shaft, one fixed gear and two toggling gears are arranged on the fifth driven shaft, and a fixed input gear is arranged on a sixth driven shaft. The transmission box is provided with three main advancing gears and two main backing gears and additionally provided with 24 secondary advancing gears and 8 secondary backing gears, so the number of the gears is greatly increased, needs of the machine during operation are met, and the functions of saving more energy source, environmental protection and improving work efficiency are achieved.

The invention provides a control system and a control method of a fluid coupling type transmission. The control system comprises an automatic transmission electronic control system and an automatic transmission hydraulic system; the automatic transmission hydraulic system comprises an oil pump, an oil supply system, a shifting system and a hydraulic torque converter locking and cooling managementsystem, and the automatic transmission electronic control system comprises a sensor, a TCU and a solenoid valve. In the invention, the control system and a control strategy of the fluid coupling typetransmission can realize real-time communication of an engine and a transmission, guarantee that engine input revolving speed, torque and transmission gear satisfy needs of vehicle operations, meanwhile, also can actively adjust a transmission operating state according to will of a driver, and guarantee that the automatic transmission can work according to preset optimal control rules under any working condition, thereby, can achieve optimal shifting quality and transmission efficiency.