31results about How to "Prevent unstable" patented technology

Provided is an objective lens used in an optical pickup that performs recording and / or reproducing of information signals on three different types of optical discs using different wavelengths. The objective lens is configured to collect light beams with the at least three wavelengths λ1, λ2, and λ3, which satisfy a relationship of λ1<λ2<λ3, on signal recording surfaces of compatible optical discs corresponding to the respective wavelengths. The objective lens includes: a diffractive portion that has a predetermined diffraction structure formed on an incident side surface. The diffractive portion has a first region that is provided in an innermost peripheral portion so as to diffract the light beams, a second region that is provided outside the first region so as to diffract the light beams, and a third region that is provided outside the second region.

There are provided a rear wheel rotatably provided in a body, a seat disposed on a top surface side of the body, a seat link mechanism by which the seat is supported to be movable up and down between a raised position and a lowered position on the top surface side of the body, and a brake mechanism which inhibits the rear wheel from rotating in interlock with the seat link mechanism, when the seat is raised from the lowered position to the raised position.

The invention discloses a preparation method of a molybdenum titanium alloy material with high density, large size and high homogeneity. The method comprises the following steps: 1) adding a solvent and a binder to Mo powder and Ti powder and grinding into slurry; 2) atomizing and pelletizing the slurry by using a spraying machine, wherein the inlet temperature is 250-300 DEG C, and the rotating speed of a spray nozzle is 8000-12000rpm, so as to obtain Mo-Ti composite powder; pressing the composite powder into blanks with regular sizes; 3) loading a plurality of blanks into a sheath, filling the Mo-Ti composite powder of 50-250 microns into the adjacent blanks to form a uniform composite powder layer, wherein the thickness of the composite powder layer is 0.5-1mm, and the condition that a gap between the inner wall of the sheath at any side and the outer wall of the adjacent blank is smaller than or equal to 0.5mm is ensured; and 4) welding and degassing the sheath and then carrying out hot isostatic pressing treatment at 750-900 DEG C and 120-160MPa and removing the sheath, wherein the heat-preserving and pressure-maintaining time is 4-6 hours. The target material fabricated by the method can be used as a cathode material of a magnetron sputtering technique.

A monitoring device for a secondary battery includes: a detection part that detects a use state of the secondary battery; and a switching part, wherein the switching part switches a protection condition applied to the secondary battery in accordance with the user state of the secondary battery.

A trailer-stabilizing device that stabilizes movement between a fifth-wheel trailer and the towing vehicle during normal trailering operations and that more effectively distributes the weight of the trailer to the towing vehicle is disclosed. The trailer-stabilizing device extends between the trailer and towing vehicle and is preferably positioned spaced apart from a traditional hitch and tongue connection pivotally securing the towing vehicle to the trailer. Preferably, the fifth-wheel trailer is pivotally secured to a conventional hitch within the bed of the pickup truck, and the stabilizing device is detachably secured to a conventional receiver on the back of the pickup truck.

A plasma processing apparatus having 90% or more of a side wall of an inner wall 101 of a reaction chamber 1 covered with a dielectric 102, and equipped with an earthed conductive member 21a having an area of less than 10% of the side wall area of the inner wall 101 and having a structure to allow direct current from a plasma to flow therein, wherein the DC earth formed of the conductive member 21 is located at a position where floating potential of plasma (or plasma density) is higher than the floating potential of plasma 9 located near a wafer holding electrode 14 where there is relatively large wall chipping.

There are provided a rear wheel rotatably provided in a body, a seat disposed on a top surface side of the body, a seat link mechanism by which the seat is supported to be movable up and down between a raised position and a lowered position on the top surface side of the body, and a brake mechanism which inhibits the rear wheel from rotating in interlock with the seat link mechanism, when the seat is raised from the lowered position to the raised position.

The invention discloses a leading line self-walking dangerous chemicals raw material barrel. The leading line self-walking dangerous chemicals raw material barrel comprises a shell and a walking mechanism; the walking mechanism is arranged at the lower end of the shell; the walking mechanism comprises a support frame, a control power box, walking wheels, a color sensor and a leading joint strip; the support frame is arranged at the lower end of the shell; the control power box is arranged in the support frame; the walking wheels are arranged on two sides of the control power box; the color sensor is arranged at one end of the power box; the leading joint strip is arranged on the ground; a detecting mechanism is arranged on the inner side of the shell; and a microprocessing chip is arranged in the control power box. The invention further discloses a working method of the leading line self-walking dangerous chemicals raw material barrel. The raw material barrel can be automatically conveyed; the change of raw materials in the raw material barrel can be automatically detected; and faulted raw materials barrels are automatically taken away from a conveying area or a storage area of normal raw material barrels to prevent the danger of operators directly facing dangerous chemicals.

A plasma processing method for processing a substrate with plasma by applying a high frequency to a reaction chamber, and applying a second high frequency to a substrate holder includes covering at least 90% of a total surface area of an inner wall of the reaction chamber that is directly exposed to plasma with a dielectric, disposing a DC earth comprising a conductive portion that is earthed and having an area less than 10% of the inner wall of the reaction chamber, and performing plasma processing to the substrate in the reaction chamber having the DC earth located at a position where a floating potential of plasma is higher than the floating potential of plasma at the inner wall of the reaction chamber that is closest to the substrate.

The invention discloses a storage cabinet for a vertical barcode printer, which is convenient for stably replacing barcode paper and color ribbon. Slot plate, a pulley is installed on the outer wall of the other side, and a driving gear is arranged on the inner wall adjacent to the pulley of the cabinet body. The driven gear shaft is connected to the first gear shaft through a chain transmission. The present invention can effectively avoid the problem of instability in taking the storage box by vertically lifting the storage box, and avoids the closed structure that cannot check the working status of the barcode printer. The problem is that the rotation of the motor can effectively avoid the problem that the cable cannot be stored after being stretched inside the cabinet. On the one hand, it protects the cable and prevents damage, and on the other hand, it ensures that the cabinet is tidy and easy to clean and maintain.

The invention discloses an adjustable advertising stand for an advertising board. The adjustable advertising stand comprises a telescopic ring buckle, the ring buckle comprises several clamping bucklebodies, the cross section areas of all the clamping buckle bodies are reduced in sequence, a strut is connected to each clamping buckle body, a slide groove for adjacent clamping buckle bodies to slide is formed inside each clamping buckle body, the ends, located in the slide grooves, of the clamping buckle bodies are provided with protrusions, the struts are hinged to the clamping buckle bodies,the clamping buckle bodies are provided with grooves for accommodating the struts, limiting grooves are further formed in one ends of the grooves, limiting boxes are slidably connected into the limiting grooves, springs are connected between the limiting boxes and the bottoms of the limiting grooves, guide grooves are formed in the slide grooves, slide blocks are slidably connected into the guidegrooves, push blocks are connected to the slide blocks, through holes are formed between the guide grooves and the limiting grooves and are internally provided with metal elastic sheets connected between the slide blocks and the limiting boxes, limiting blocks are further slidably connected to the clamping buckle bodies, one ends of the limiting blocks are located outside the clamping buckle bodies, and the other ends of the limiting blocks are located in the guide grooves. The problems that there are many parts of the advertising stand, detachment is complex, and storage and reinstallation are inconvenient.

The invention provides an animal belly inspection and diagnosis and treatment bench for a vet. The animal belly inspection and diagnosis and treatment bench comprises a spring, a drawer, a crawler belt wheel, an excrement storage bucket and a power supply hub, wherein a storage tank and an accommodating tank are formed in the end surface of the top of the diagnosis and treatment bench; supportingcolumns are arranged on the end surface of the top of the diagnosis and treatment bench, so right legs of the animal can be fixed and lifted; a to-be-inspected part of the animal can be fully displayed in front of the worker, so post-inspection work can be quickly and conveniently conducted and work efficiency can be improved; with slide blocks, chain blocks and Velcro tap fixing rings can move left and right on a preset track, so animals with different sizes can be fixed; use efficiency of the animal belly inspection and diagnosis and treatment bench can be enhanced; with the Velcro tap fixing rings, the workers can quickly fix the animal legs; and detachment work can be quickened, so time consumption can be reduced.

The invention provides a magnesium oxychloride aeolian sand composite material capable of being subjected to 3D printing, and relates to the technical field of building materials. The magnesium oxychloride aeolian sand composite material comprises the following components in parts by weight: 0.9-1.1 parts of magnesium oxide powder, 0.4-0.6 part of magnesium chloride hexahydrate, 2.0-4.0 parts of aeolian sand, 0.4-0.6 part of water, 0.1-0.2 part of fly ash, 0.1-0.2 part of silica fume and 0.003-0.008 part of cellulose ether; the magnesium oxide powder comprises MgO with the mass content of 70% or above and the balance being MgCO3 and CaO. The magnesium oxychloride aeolian sand composite material is extremely low in static yield stress, dynamic yield stress and plastic viscosity, extrudate is continuous and free of breakage, and the magnesium oxychloride aeolian sand composite material is more suitable for 3D printing; and the early shrinkage strain is -0.0028, the 28d compressive strength is 35-57 MPa and the breaking strength is 7-13.1 MPa within 8 hours under a high aggregate ratio.

The invention relates to a lead frame for manufacturing a rectifier, comprising a supporting chip, a plurality of first connecting sheets and a plurality of second connecting sheets, wherein the supporting chip mainly comprises a first positioning pin, a second positioning pin and a plurality of chip welding zones, wherein the plurality of chip welding zones are positioned between the first positioning pin and the second positioning pin in an arrangement way of at least two rows and at least two lines; the first connecting sheets are provided with fifth welding point zones used for corresponding to first welding point zones and sixth welding point zones used for corresponding to fourth welding point zones; and the second connecting sheets are provided with seventh welding point zones used for corresponding to second welding point zones and eighth welding point zones used for corresponding to third welding point zones. The invention solves the problems of strict requirements for smoothness and low copper material utility ratio in the prior art, greatly reduces the probability of crystal grain damage or poor contact and enhances the copper material utility ratio.

The invention discloses a device for producing a high-end graphite carbon material. The device comprises first to m-th heating units and first to n-th coke towers, m is any integer from 2 to n-1; n isan arbitrary integer of 3 or more; the n-th coke tower is at least communicated with at least two heating units of the m heating units; each coke tower of the n coke towers is respectively communicated with one or more separation towers; the side light wax oil pipelines of one or more separation towers are communicated with the m-th heating unit, the materials in the bottom of one or more separation towers are discharged out of the system through pipelines (or partially discharged out of the system and partially circulated back to the separation towers), and an optional bottom is communicatedwith the i-th heating unit. The device can be used for continuously producing the high-quality high-end graphite carbon material with a stable performance by adopting petroleum or coal series raw materials.

The invention discloses a combined method for producing a high-end graphite carbon material. The method comprises the following steps: fractionating raw oil and vacuum residuum to obtain heavy distillate oil and light distillate oil; discharging the heavy distillate out of the device, optionally and partially circulating the heavy distillate oil back to the bottom of a fractionating tower, feedingthe light distillate oil into a hydrotreating device, performing a hydrotreating reaction in the presence of hydrogen and a hydrotreating catalyst, taking the hydrotreated material as a coking raw material (also called as a green coke raw material); and feeding the coking raw material into a coking device, and carrying out reactions to obtain the high-end graphite carbon material. The method canbe used for continuously producing the high-quality high-end graphite carbon material with a stable performance.

The invention belongs to the technical field of dispersing machines, and discloses a textile assistant dispersing machine, which comprises a base, a stabilizing device is arranged on one side of the interior of the base in the vertical direction, a driving bin is arranged on one side of the upper portion of the base in the vertical direction, and a pedestal of the driving bin is fixedly connectedto the base, and a generating barrel is disposed above the other side of the upper part of the base. According to the textile assistant dispersing machine, a lifting mechanism and a rotating mechanismare arranged, and a second motor drives a stirring rod to rotate at a high speed, so that a dispersing disc can fully and completely stir textile assistants in the generating barrel; a first motor ina driving bin works to drive a rotating device to perform translational motion in the vertical direction, so that the dispersing disc can perform vertical large-range stirring work in the generatingbarrel, and the textile assistants can be uniformly and better emulsified and dispersed, and the working efficiency and quality of the dispersing machine are improved.

The invention discloses a combined technique for producing a high-end graphite carbon material. The method comprises the following steps: fractionating raw oil to obtain heavy distillate oil and lightdistillate oil; discharging the heavy distillate oil from the device (or discharging a part of the heavy distillate oil from the device and circulating a part of the heavy distillate oil to the bottom of a fractionating tower), introducing a part of the light distillate oil into a hydrotreating device, carrying out a hydrotreating reaction in the presence of hydrogen and a hydrogenation catalyst,mixing the hydrotreated material with residual light distillate oil after hydrotreating, serving the mixture as a coking raw material (also called as a green coke raw material); and feeding the coking raw material into a coking device, and carrying out reactions to obtain the high-end graphite carbon material. The method can be used for continuously producing the high-quality high-end graphite carbon material with a stable performance.

The invention discloses a wiring device for an experiment board and a using method of the wiring device, relates to the technical field of experiment board wiring, and aims at solving problems that when an existing worker holds a wire by hand to perform mobile wiring and welding on a universal board, the hand deviates or shakes during welding due to the fact that the hand of the worker cannot keepstable. And therefore, the welding position of the wire is not accurate enough, and the welding and wiring quality is reduced are solved. Supporting bases are fixedly arranged on the two sides of theupper portion of the base, a fixing base is fixedly arranged on the supporting bases, connecting bases are fixedly arranged on the two sides of the upper portion of the fixing base, sliding square rods are fixedly arranged on the upper portions of the opposite sides of the connecting bases, and sliding bases are arranged on one sides of the outer portions of the sliding square rods; a wiring mechanism is arranged on the front end faces of the sliding seats, a two-way screw rod is arranged below the connecting seats, and the two ends of the two-way screw rod are rotationally connected with theconnecting seats through bearings correspondingly.

The invention discloses a preparation method of a molybdenum titanium alloy material with high density, large size and high homogeneity. The method comprises the following steps: 1) adding a solvent and a binder to Mo powder and Ti powder and grinding into slurry; 2) atomizing and pelletizing the slurry by using a spraying machine, wherein the inlet temperature is 250-300 DEG C, and the rotating speed of a spray nozzle is 8000-12000rpm, so as to obtain Mo-Ti composite powder; pressing the composite powder into blanks with regular sizes; 3) loading a plurality of blanks into a sheath, filling the Mo-Ti composite powder of 50-250 microns into the adjacent blanks to form a uniform composite powder layer, wherein the thickness of the composite powder layer is 0.5-1mm, and the condition that a gap between the inner wall of the sheath at any side and the outer wall of the adjacent blank is smaller than or equal to 0.5mm is ensured; and 4) welding and degassing the sheath and then carrying out hot isostatic pressing treatment at 750-900 DEG C and 120-160MPa and removing the sheath, wherein the heat-preserving and pressure-maintaining time is 4-6 hours. The target material fabricated by the method can be used as a cathode material of a magnetron sputtering technique.

The invention relates to composition containing flupirtine maleate and a preparation method of the composition. The composition is prepared from raw materials in percentage by weight as follows: 25%-35% of flupirtine maleate, 50%-70% of a diluent, 1.5%-4.5% of a disintegrating agent, 1.5%-4.5% of a flow aid, 0.5%-1.5% of a cosolvent and 0.5%-1.5% of a lubricant. The problem that the raw materials are unstable under illumination and high-humidity conditions is solved. The composition is stable in quality, the content of flupirtine maleate, related impurities and dissolution rate have no remarkable change, the in-vitro dissolution behavior is consistent with that of flupirtine maleate capsules from the German AWD company, the risk of clinical effect difference is reduced, the process is simple, and realization of industrial production is facilitated.

The invention discloses a portable handheld ultrasonic welding machine with a protective structure, which relates to the technical field of welding machines and includes a main body and a base. cavity, the middle part inside the front end of the main body is provided with a control panel, and one end inside the control panel is installed with a connecting wire, the outer end of the connecting wire is provided with a welding head, and the base is located outside the bottom of the main body. The setting of the positioning groove and the built-in cavity can move the protective layer out of the built-in cavity during the long-term practical process, which is convenient for the user to clean the dust and other foreign objects blocked inside the protective layer, and can recycle the protective layer for practical use , it is more economical to use, and when installing the protective layer, the connecting protrusions on both sides of the protective layer can be used to snap into the inside of the positioning groove for fixing, so as to avoid that the protective layer is not stable enough during use.

Provided is an objective lens used in an optical pickup that performs recording and / or reproducing of information signals on three different types of optical discs using different wavelengths. The objective lens is configured to collect light beams with the at least three wavelengths λ1, λ2, and λ3, which satisfy a relationship of λ1<λ2<λ3, on signal recording surfaces of compatible optical discs corresponding to the respective wavelengths. The objective lens includes: a diffractive portion that has a predetermined diffraction structure formed on an incident side surface. The diffractive portion has a first region that is provided in an innermost peripheral portion so as to diffract the light beams, a second region that is provided outside the first region so as to diffract the light beams, and a third region that is provided outside the second region.

The invention discloses a wiring device for a test board and a method for using the same, and relates to the technical field of test board wiring. Stable, when welding, the hand will shift or tremble, which will cause the welding position of the wire to be inaccurate and reduce the quality of welding wiring. Both sides above the base are fixedly provided with support seats, above the support seat are fixedly provided with fixed seats, both sides above the fixed seat are fixedly provided with connecting seats, and above the opposite side of the connecting seats A sliding square rod is fixedly arranged, and a sliding seat is provided on one side of the outside of the sliding square rod, and a wiring mechanism is provided on the front end of the sliding seat, and a two-way screw is arranged on the bottom between the connecting seats, and the two-way screw The two ends are respectively rotatably connected with the connecting seat through bearings.

The invention provides a preparation method of a cefozopran hydrochloride intermediate, 7-aminocephalosporanic acid is used as a starting material to prepare the cefozopran hydrochloride intermediate 7-ACP, in the preparation method, the raw materials are reasonably proportioned, the reaction temperature is controlled to be 20-25 DEG C, and the cefozopran hydrochloride intermediate is prepared through four steps. The yield of the cefozopran hydrochloride intermediate prepared by the preparation method disclosed by the invention is as high as 96.44%, and the purity of the cefozopran hydrochloride intermediate is 99.86%.

The invention discloses a semitrailer carriage with an auxiliary fixing structure. The semitrailer carriage comprises a carriage body and clamping column storage grooves, partition plate adjusting shafts are arranged on the upper side and the lower side of the carriage body, carriage body partition plates are arranged on the surfaces of the partition plate adjusting shafts, and the clamping columnstorage grooves are formed in the surfaces of the carriage body partition plates. Clamping column springs are arranged in the clamping column storage grooves, tightening bolts are arranged on the inner sides of the auxiliary fixing plates, extension rods are arranged at the left ends and the right ends of the auxiliary fixing plates, rope winding shafts are arranged on the outer sides of the extension rods, and auxiliary fixing rope bodies are arranged on the surfaces of the rope winding shafts. The tail end of the auxiliary fixing rope body is connected with a positioning hook, and a semicircular hanging ring is arranged in the positioning hook. The semitrailer carriage with an auxiliary fixing structure is provided with the auxiliary fixing plate, part of goods can be fixed in an auxiliary mode, the goods are prevented from toppling over, the telescopic springs can be adjusted according to the sizes of the goods, and the application range of the auxiliary fixing plate is wider.

The invention discloses a manufacturing method of a crankshaft high-performance alloy mold. The manufacturing method is characterized by comprising the following steps of: (1) carrying out primary smelting, to be specific, putting carbon steel in a smelting furnace so as to heat and melt the carbon steel, and adding carbon black and mixed alloy to molten steel so as to carry out smelting; (2) forging, and smelting the molten steel respectively at the temperatures of 1170-1180 DEG C and 910-930 DEG C; (3) carrying out casting forming, to be specific, casting forged molten alloy, and carrying out staged temperature reduction; (4) carrying out quenching treatment, to be specific, putting the alloy mold in a high-temperature furnace to carry out quenching treatment; and (5) carrying out passivating treatment, to be specific, carrying out passivating treatment on the quenched alloy mold in a vacuum tank.

The invention discloses an adjustable advertising stand for an advertising board. The adjustable advertising stand comprises a telescopic ring buckle, the ring buckle comprises several clamping bucklebodies, the cross section areas of all the clamping buckle bodies are reduced in sequence, a strut is connected to each clamping buckle body, a slide groove for adjacent clamping buckle bodies to slide is formed inside each clamping buckle body, the ends, located in the slide grooves, of the clamping buckle bodies are provided with protrusions, the struts are hinged to the clamping buckle bodies,the clamping buckle bodies are provided with grooves for accommodating the struts, limiting grooves are further formed in one ends of the grooves, limiting boxes are slidably connected into the limiting grooves, springs are connected between the limiting boxes and the bottoms of the limiting grooves, guide grooves are formed in the slide grooves, slide blocks are slidably connected into the guidegrooves, push blocks are connected to the slide blocks, through holes are formed between the guide grooves and the limiting grooves and are internally provided with metal elastic sheets connected between the slide blocks and the limiting boxes, limiting blocks are further slidably connected to the clamping buckle bodies, one ends of the limiting blocks are located outside the clamping buckle bodies, and the other ends of the limiting blocks are located in the guide grooves. The problems that there are many parts of the advertising stand, detachment is complex, and storage and reinstallation are inconvenient.

The invention relates to a maintenance platform based on magnetorheological fluid, which includes a frame-shaped scaffold arranged outside the main shaft and a lifting platform horizontally arranged in the scaffold; the scaffold includes a horizontal base and is vertically fixed on the The uprights at the upper ends of the four corners of the base and the push rods horizontally fixed on the upper ends of the uprights; the outer side of the lifting platform is slidably sleeved on the uprights; the scaffold is provided with a driving mechanism; the driving mechanism and the lifting platform connected to drive the lifting platform up and down along the column; the inside of the lifting platform is horizontally fixed with a rubber pedal; the inside of the rubber pedal is hollow and the inner cavity is filled with magnetorheological fluid; a coil is embedded in the rubber pedal; The coil can be electrically connected to an external power supply; when the coil is energized, the magnetorheological fluid in the rubber pedal changes from liquid to solid state due to the change of the magnetic field, which can realize the curing of the rubber pedal.

A monitoring device for a secondary battery includes: a detection part that detects a use state of the secondary battery; and a switching part, wherein the switching part switches a protection condition applied to the secondary battery in accordance with the user state of the secondary battery.