3026results about How to "Improve working conditions" patented technology

The information processing apparatus equipped with a liquid crystal display apparatus that is usable in the face-to-face usage style. When the display direction is switched into the facing direction and in a normal usage state, the liquid crystal display apparatus exhibits an excellent visual recognizability and complicated operations are unnecessary. The image information, the picture direction of which has been inverted upside down, is outputted from the information processing unit 2 to the display unit 1 in such a manner as to be coupled with the picture direction change instructing member 3. At the same time, the luminance information at the time of the picture upside-down inversion, which has been set in advance into the luminance adjusting member 4, is supplied to the display unit 1 so as to change the luminance simultaneously with the picture inversion. At this time, the luminance of the display unit 1 at the time of the picture upside-down inversion is changed to a higher luminance, thereby making it possible to enhance the visual recognizability from the facing side.

The invention discloses an Li traction battery series parallel change-over charging method and a charging device. The charging device comprises a power main loop comprising a rectifier circuit, a DC filtering capacitor, a pre-charging circuit, a voltage sensor, a switch bridge circuit, a charging current sensor and a series parallel change-over switch, a control circuit board comprising a parallel branch signal unit, a switch signal drive control unit, a coil signal circuit, a voltage current signal circuit, a control processor and a signal display unit, a serial charging circuit comprising a filter inductor, a filter capacitor and an output voltage sensor, and a parallel charging circuit comprising a primary coil, a feedback coil, an iron core, a plurality of secondary coils of a multi-winding transformer and a plurality of series parallel charging unit. The pre-charging, serial charging and parallel charging are carried out by the charging method according to a set pre-charging voltage value and an end voltage value. The method and the device provided by the invention reduce the cost and volume of charging devices, maintain the balance of charging capacity of every Li traction battery electrical core, ensure adequate protection and best working status for each battery unit and improve safety and service life cycle of Li traction battery.

The invention discloses an environmentally-friendly type solvent-free impregnating resin and a preparation method thereof. The impregnating resin comprises: 100 parts by weight of one or more high heat-resistant unsaturated polyester resins, 0 to 100 parts by weight of one or more modified epoxy resins, 50 to 200 parts by weight of one or more novel reactive diluents, 0.1 to 1 parts by weight of one or more polymerization inhibitors, 1.5 to 3.8 parts by weight of one or more initiators and 0 to 2 parts by weight of one or more auxiliary agents. Under the same work conditions, a baking time of the solvent-free impregnating resin is less than about one third of a baking time of the existing conventional solvent-free type impregnating resin utilized for middle and low voltage motors and transformers, and an energy consumption of the solvent-free impregnating resin is lower than about 25% of an energy consumption of the existing conventional solvent-free type impregnating resin middle and low voltage motors and transformers.

The invention provides a high hardness ferrite stainless steel wearable flux-cored wire, which takes a low carbon steel H08A cold rolling thin steel strip as an external wrapper; furthermore, the wrapper is internally provided with a powder core which is composed of graphite, metal and alloy powder; the weight percentages of all ingredients of the powder core are 50-75% of high carbon ferrochrome, 10-16% of ferrovanadium, 6-10% of ferrotitanium, 2-10% of tungsten carbide, 2-3% of nickel powder, 1.5-2.5% of silver graphite, 1-3.5% of boron carbide, 1-2% of aluminium magnesium powder, 0-10% of metallic chromium, and the residual quantity of reduced iron powder; the filling proportion of the powder core is 46-50%; the invention adopts the technical proposal that high-content ferrovanadium and adequate alloy powders such as tungsten carbide and boron carbide, etc. are added into the flux-cored wire, changes the microstructure of the existing ferrite stainless steel flux-cored wire surfacing alloy, overcomes the shortages of poor wearability and ductility, and can be applied to submerged arc bead weld manufacture or repair of the parts which has high requirement of abrasion and the corrosion resistance of the wearable grain.

The invention discloses an aluminum alloy wheel hub coating technology. The aluminum alloy wheel hub coating technology comprises the procedures of oil removing, cleaning and drying, pre-treating, epoxy polyester powder spraying and solidifying, grinding I, methyl methacrylate-acrylate copolymer paint spraying and solidifying, grinding II, polybutadiene high temperature resistant insulating coating spraying and solidifying, vacuum cathode arc ion chromium plating and magnetism control sputtering aluminum plating, and polyurethane methacrylate light solidifying paint spraying and solidifying in sequence. The aluminum alloy wheel hub coating technology adopts dry electric plating to replace the traditional wet electric plating, the plating layer surface quality and the physical and chemical properties are approximately equivalent to the wet electric plated aluminum alloy wheel hub, the chromium consumption is reduced to about one fifth of the wet electric plating, the water consumption is reduced to about one seventh of the wet electric plating, precious nickel and copper are not utilized, the poisonous metal substance such as hexavalent chromium is not contained, the pollution to the environment is reduced, the energy, water and precious metal consumption is remarkably reduced, the technological flow is simplified, the production efficiency is enhanced, the heavy polishing working sequence is omitted, the working condition is remarkably improved, and the cost is reduced.

The invention discloses an intelligent dust concentration limit setting spray dust settling device. The device comprises a control unit, a dust concentration sensor, an electromagnetic valve and a sprinkler head, wherein the signal output end of the dust concentration sensor is connected with a signal input end of the control unit; a control signal output end of the control unit is connected with a control signal input end of the electromagnetic valve; and the control unit realizes spray control over the sprinkler head through the switching of the electromagnetic valve. In the device of the invention, the dust concentration limit is manually set; the spraying starts when the dust concentration limit exceeds an upper limit value and stops when the dust concentration limit is less than a lower limit value; and thus the meaningless waste of water resource is prevented, the water logging in roadways is reduced, the working conditions are improved and the health and the safety of mine workers are ensured. In addition, the invention also discloses an intelligent dust concentration limit setting spray dust settling system, so the remote on-line monitoring of the dust concentration can be realized; meanwhile, the invention also discloses an intelligent dust concentration limit setting spray dust settling method.

The invention discloses a metal part additive manufacturing method based on contour features, which comprises the following steps: 1, establishing a metal part CAD (Computer Aided Design) geometric model, and extracting an STL(Standard Template Library) model; 2, determining the manufacturing direction of the metal part according to the contour features and the complexity of the metal part, and carrying out the route planning on the part additive manufacturing; 3, rotationally slicing the STL model by using a layered slicing software, and generating a control command by a computer according to the contour information; 4, sending panel veneer with set width and thickness by a panel veneer feeding mechanism under the control of the control command, and shearing; and 5, finishing the welding of layers under the actions of heat generated by resistance welding or friction stirring welding as well as rolling, and meanwhile removing contour burrs through compounding the same-station milling, repeating the step 4 and the step 5, till finishing the forming of the whole part, and if not meeting the part precision requirement, adding the part finish machining step at last. Compared with the prior art, the manufacturing method has the advantages of less process, high forming quality, short manufacturing period, low cost and the like.

The invention discloses a sublevel open-stoping mining method with subsequent backfilling for long-hole caving in thin ore bodies. The sublevel open-stoping mining method with subsequent backfilling is characterized by comprising the following steps: arranging ore blocks along the orientation of the ore bodies, and dividing the ore block into ore chambers and ore pillars; dividing the ore blocks into segments in a vertical direction by sublevel drilling gate ways with an interval of 15-20m; drilling upward parallel or fan-shaped and downward parallel or fan-shaped medium-depth holes in the sublevel drilling gate ways to recover, wherein different sublevel caving sequences can be adopted according to the stabilization condition of the hanging wall surrounding rocks of the ore bodies; laterally loading ores by using a carry scraper from a bottom trench; locally anchoring the unstable areas of the hanging walls of the ore bodies, and drilling the anchored holes along with the caved holes; after the ores are recovered from the ore chambers, recovering the ore pillars according to the condition of the adjacent ore blocks, and finally filling goaf with waste rocks. The method has the prominent effects of good labour conditions, safety in working, high operation efficiency and high production capacity, and can realize intensified mining and ore mucking, and effectively control ore losses and dilution rate.

The invention relates to a method for preparing solventless unsaturated polyester-imide wire coating enamel. The method comprises preparation of unsaturated polyester-imide and processing of paint mixing, wherein the unsaturated polyester-imide is prepared by the following steps: first step, adding polylol, dibasic acid or estolide into a reaction kettle according to a mol ratio of 1.05-1.5:1; stirring and heating the mixture to a temperature of between 160 and 170 DEG C; preserving the heat for 0.5 to 2 hours; and slowly heating the mixture to a temperature of between 200 and 205 DEG C until the acid value is no less than 50 mg KOH/g; and second step, cooling the mixture to a temperature of between 110 and 120 DEG C, adding trimellitic anhydride and diamine with the mol ratio of 2:1, and preserving the heat at a temperature of between 130 and 150 DEG C until the material is transparent; and after 1 hour of heat preservation, slowly heating the material to a temperature of between 200 and 205 DEG C until the acid value is no less than 30 mg KOG/g. Machine winding dipped by the solventless resin has the advantages of small volatilization loss, high filling rate, few times of paint dipping, short baking time, strong binding power, excellent performance of electrical appliance, environmental pollution reduction, and the like.

Provided are a method and a device for tunnel advance geology forecast with tunnel face blasting as a focus. The method comprises the steps of (1) drilling holes on two lateral walls at the inlet position in a tunnel; (2) filling a coupling agent into the drilled holes, and attaching weave detectors to the walls of the drilled holes; (3) winding a trigger circuit copper wire on cartridged explosive, and placing the cartridged explosive into a blasted hole of the tunnel face; (4), enabling two three-component weave detectors buried in a tunnel hole to receive reflective earthquake wave signals; (5) sending the signals to an amplifier after the signals are selected by a multi-way switch; (6) enabling the amplifier to amplify the signals and then transmit the signals to an analog/digital (A/D) converter through wireless transmission; (7) enabling a wireless communication module of a control chamber to receive a wireless signal and then transmit the wireless signal to a host, and recording the signal; and (8) achieving geology forecast through an processing program installed in the host. The device comprises signal acquisition, wireless communication and control and a data analyzing system. The method is simple, easy and low in cost, can be used for advance geology forecast of tunnels, holes and roadway underground spaces, and achieves automation and normalization of geology forecast.

The invention discloses automatic build-up welding equipment for an abrasion-resistant layer on an inner wall of a pipeline and an automatic build-up welding method for realizing efficient automatic production of high abrasion-resistant composite conveying pipelines. The equipment comprises a host, a direct-current gas protective welding power supply, a protective gas storage tank and a control box with a built-in automatic control device; one end of a base is provided with a head, a main shaft, a chuck and an adjustable roller bracket; the other end of the base is provided with a welding gun running execution device, and the device comprises a driving and reversing platform, a swing platform, a welding gun lifting mechanism, a wire feeder and a welding gun; the front end of the welding gun is provided with a welding torch, and a welding wire and a protective gas conveying pipe are communicated to the front end of the welding gun; the anode of the welding power supply is connected with the welding torch, and the cathode of the welding power supply is connected with a workpiece; and the moving parts are driven by a step motor through the automatic control device. The operation process comprises early preparation, parameter setting, welding and reset stopping; and by setting control parameters, the execution parts run according to the set parameters to form build-up welding layers tightly arranged and uniformly distributed in a spiral motion locus.

The invention discloses a method for preparing microcrystalline foam glass by using high titanium blast furnace slag and waste glass powder. The method comprises the following steps: grinding the high titanium blast furnace slag and waste glass powder, uniformly and fully mixing the high titanium blast furnace slag, the waste glass powder, a fluxing agent, a foaming agent and a foam stabilizer, pressing into a block, adding the mixture block into a heating device and preparing the microcrystalline foam glass at a low temperature according to a specific heat treatment process by using a one-step sintering method. According to the characteristic that the high titanium blast furnace slag which is rich in TiO2 can serve as a nucleation agent, the low-melting-point waste glass powder serves as a silicious raw material, a proper amount of corresponding fluxing agent and sintering process are matched, the preparation temperature is greatly reduced, and the preparation can be finished through one-step sintering; and therefore, the energy consumption can be reduced, the process is simplified, the cycle is shortened, the cost is saved, the product which is uniform in cells, moderate in cell diameter, low in volume density, low in water absorption rate, good in thermal insulation effect and high in mechanical strength can be obtained, and the additional value of high titanium blast furnace slag utilization is improved.

A multi-purpose vehicle used as ordinary car, environmental sanitation car and digger is composed of main vehicle body, digger, grasp mechanism, load-bearing unit, sucking unit, sprinkler, and hoister. Said digger can also be installed to ship. A mechanical arm is also disclosed, which features that it has spherical joint, both axial and radial rotary unit, and the drivers in both direction of an arm segment.

The present invention is process of recovering and smelting bismuth from bismuth slag, and belongs to the field of combined wet and pyrogenic non-ferrous metal smelting technology. The process includes the first wet leaching of bismuth slag with hydrochloric acid, precipitating leaching liquid to obtain bismuth oxychloride, reducing smelting to obtain coarse bismuth product, refining to obtain refined bismuth product, precipitating Cu from the bismuth extracting filtrate, and returning the used liquid to the leaching step. The present invention has high material adaptability, high metal recovering rate and environment friendship.

The invention provides a pressure stability control device supplied with constant voltage by a propellant, in particular comprising a high-pressure air supply device, a supercharging device, a control gas device, a blowing device and a liquid propellant supplying device. The high-pressure air supply device supplies high-pressure air. The supercharging device supercharges a propellant storage tank to extrude the propellant to enter a feeding pipeline, and a supercharging buffer tank can stabilize the pressure of pressurized gas. The blowing device is in charge of filling the clearing of pipeline propellant. The control gas device provides control gas for the system. The pressure of pressurized gas can be always kept constant by the pressure stability control device supplied with constant voltage by the propellant, thereby continuously supplying liquid propellant in testing, and satisfying the principle of slow supercharging and preventing collapse of the feeding pipeline due to too fast pressurizing in pressurization.

The invention discloses a making method of high-purity solidified carbon cushion in the silicon crystal growing stove, which is characterized by the following: selecting flexible cushion with low metal impurity as blank material; disposing under high temperature to form graphite cushion; using graphite cushion as blank; solidifying the blank to shape with evenly permeable hardener; carbonizing the blank; proceeding chemical gas-phase deposition for blank; cutting part of element surface mechanically; disposing blank under high temperature; removing metal impurity and volatile substance; coating the working piece; strengthening the element surface; improving the corrosion resistant of blank surface.

An inorganic fiber mat includes an inorganic fiber aggregated body which includes inorganic fibers. At least a part of the inorganic fibers located on a surface of the inorganic fiber aggregated body is fused to each other by heat.

The invention relates to a method of manufacturing fibre-reinforced parts for a wind power plant such as eg a blade, wherein the method comprises laying out a first, outermost layer of film in the interior surface of an open mould; following which different layers are arranged on top of the first layer, comprising layers of fibre material; and wherein resin is applied for joining the laid-out layers to each other. By use of a film for the outermost layer a moulding process results that provides a major improvement of the working conditions. A further advantage is also that, compared to the use of gelcoat, a surface is accomplished which is more resistant to physical influences in the form of eg cyclical stresses on the element. The invention also relates to a fibre-reinforced part for a wind power plant, eg a blade, wherein the part is structured from a first, outermost layer, and also to a blade for a wind power plant and comprising a fibre-reinforced part according to the invention.

The invention discloses a method for identifying a sound fault based on a mel energy spectrum and a convolution neural network. The method comprises the following steps: first, performing pre-emphasison initially input audio data; then, performing framing and windowing processing on the data; after that, performing fast Fourier transform on framed and windowed data; extracting energy features ona frequency domain, processing an energy spectrum by using a set of mel-scale triangular filter banks; and after that, converting the data into a Mel energy spectrum by using energy in different frequency domains corresponding to each frame as a Y axis, and different frames in a time domain as an X axis. After that, the energy spectrum needs to be further framed to adapt to an input of a CNN (convolution neural network). Each frame is a sample, and one-hot coding of a label corresponding to each sample is used as an output of the CNN to train a CNN model until a network training error reachesthe minimum. During prediction, a probability value of each type of label is output, and a label with the largest probability value is taken as a final discrimination result.

The invention discloses a submerged-arc welding process of a stainless steel composite steel plate, which has the advantages that the labour intensity of welders can be effectively reduced, the labour condition, production efficiency and the welding quality are improved, the production cost is reduced, and the like. The invention comprises the following processes of: (1) processing a groove, i.e., processing the welding end of the stainless steel composite steel plate to be welded into a groove; (2) using the weld bead in the middle part of the groove as a bottoming weld line, using the weld bead at the upper part of the base layer bottoming weld line close to the stainless steel composite steel plate composite layer as the multicoat weld line and using the weld bead at the lower part of the base layer bottoming weld line as the base layer filling cap weld; (3) welding the base layer bottoming weld line by a traditional process; (4) welding the base layer filling cap weld by a traditional process; and (5) welding the multicoat weld line, wherein the welding current ranges from 350A to 400A, the welding voltage ranges from 28V to 30V and the welding speed ranges from 40cm/min to 50cm/min.