104results about How to "From shock" patented technology

This inventive high power diode laser driver is used for driving high power diode laser or diode laser array and providing complete protective units, with its kernel part of voltage controlled current source. The circuit board of the voltage controlled current source consistes of: a voltage reference circuit (1), current-limiting circuit (2), soft starting circuit (3), anti-surge circuit (4), modulation input circuit (5), feed-back control circuit (6) and current driving circuit (7). This inventive negative feedback principle stable output current can provide: constant current driving mode (CCD mode) and constant power driving mode (CPD mode), which CCD mode can preset precisely the working current and limiting current of LD with long duration stability of 38ppm, and which CPD mode can automatically regulate output current to ensure constant power working of LD, and said (2) and (3) provides safety driving of LD.

The invention discloses an environment-friendly single-layer microcellular foamPVC (polyvinyl chloride) wood-plastic composite board and a preparation method thereof. According to an adopted raw material formula,the board comprises the components in percentage by mass as follows: 20%-60% of a PVC reclaimed material, 15%-45% of PVC resin, 5.6%-10% of wood fiber powder, 5%-8.9% of filler, 4%-4.4% of a foaming conditioning agent, 1%-1.5% of a compound stabilizer, 0.7%-0.9% of a foaming agent, 2%-2.5% of a reinforcing agent, 2.2%-2.4% of an impact modifier, 0.3%-0.45% of a lubricating agent, 0.1%-0.15% of a coupling agent and 3%-5% of a functional additive, and the functional additive is an anti-aging agent, a fire retardant or a coloring agent. The composite board has the processability similar to that of wood, can substitute for a wood board and also has thecharacteristics of fireproof property, moistureproof property, smooth and attractive appearance and the like, and the wood does not have the characteristics; according to the preparation method of the composite board, waste PVC can be used for performing cycle production, waste materials can be changed into things of value, waste of wood resources can be reduced, and the pollution caused by plastic products to the environment can also be avoided.

The invention relates to the technical field of organic photoelectric materials, and in particular, relates to an organic compound, an electronic element containing the same and an electronic device.The compound has a structure represented by a chemical formula 1', wherein one of R1, R2, R3 and R4 is a group defined in the specification, and the other three are selected from substituents such asalkyl, halogen and cyano; one of R5, R6, R7 and R8 is a group defined in the specification, the other three are selected from substituents such as alkyl, halogen and cyano, Y and Y1 are respectively and independently a group defined in the specification, and L and L1 are single bonds, aryl, heteroaryl and the like. By using the organic compound in an electronic component, the driving voltage, luminous efficiency, and life of the electronic component are improved.

The invention discloses a method for controlling power limit load of a caterpillar crane. A control system thereof comprises a foot plate accelerator, a hydraulic pump, a controller and an engine, wherein, the engine is connected with a hydraulic pump by a dividing box, the foot plate accelerator is connected with the ECM accelerator input end of the engine. The engine of the invention is an EFI engine, the hydraulic pump is a proportional electronically controlled hydraulic pump, the controller is connected with the engine ECM by a CAN bus, and a PWM output port of the controller is connected with a proportional solenoid of an adjusting hydraulic pump oscillation angle. When the engine is in idle load, the engine is standardized according to a torque-rotating speed curve of the accelerator of the engine; when the engine is in load, the controller collects information on the engine according to the CAN bus; the oscillation angle of the electronically controlled hydraulic pump is adjusted by adjusting PID of the controller, so that input power of a hydraulic system is adjusted to match with the power of the engine, thus realizing operation of the engine without stalling. The control method of the invention can reduce oil consumption, lengthen service life of the engine and protect the hydraulic system from impact; in addition, the method features simple circuits, convenient realization and low cost.

The invention discloses a DDMS heavy draught upright post platform, which belongs to the technical field of ocean engineering and ship engineering, and is applicable to oil gas drilling and producing of an abyssal sea area. The upright post platform is characterized by consisting of four heavy draught upright posts, an upright post of a center well, a heave plate, a transverse pontoon bridge, a soft cabin, an anchoring system, a riser system and a platform upper part, wherein the four heave draught upright posts are arranged on four angular points of a cross section of the platform; the upright post of the center well is arranged in the center of the cross section; a K-shaped beam is arranged on the top of a hard cabin to connect the upright posts and the center well; the heave plate and the hard cabin of the platform are directly integrated into a whole, and are horizontally arranged on the upright posts; the transverse pontoon bridge is arranged on the bottom of the hard cabin to connect each upright post; and the soft cabin in large volume is arranged on the bottom of the platform and is filled with ballast weight. The platform has the advantages that building difficulty and cost of the platform are lower; the structure of the center well makes the upright posts protected; elasticity of global design and use space of the platform upper part are larger; hydrodynamic performance can be improved, so the platform has excellent motion performance; application of a dry-type tree is supported; and the platform is applicable to various conditions of different sea areas and sea conditions.

The invention provides an organic compound, an organic electroluminescent device and an electronic device. The chemical structure of the organic compound comprises an adamantane spirofluorene ring anda dibenzo five-membered ring, and the organic compound has an excellent energy transfer function, can be used as a luminescent layer material in an electroluminescent device, improves the efficiencyof the organic electroluminescent device and prolongs the service life of the organic electroluminescent device.

The invention discloses a rice field nitrogen-phosphorous runoff loss monitoring and early warning device and relates to the technical field of environmental monitoring. The device consists of a sampling detector (1), a monitoring sensor (2), a data processor (3) and a user terminal (4). With respect to the randomness and uncertainty of rice field nitrogen-phosphorous runoff loss, the device disclosed by the invention solves the problem of difficult monitoring of total nitrogen and total phosphorous in rice field drainage, and conducts direct measurement of pH, dissolved oxygen, redox potential, temperature, conductivity, salinity, chlorophyll and suspended solid parameter in rice field drainage runoff as well as indirect measurement of total nitrogen and total phosphorous; moreover, according to real-time early warning of the concentrations of total nitrogen and total phosphorous, the device realizes real-time monitoring of the rice field drainage water quality and risk early warningof nitrogen-phosphorous loss, and provides a scientific basis for decision making of an environment manager and equipment support for the pollution control on an agricultural non-point source.

The invention relates to a bushing pressing mechanism which comprises a bottom plate and a fixed component; a drive component is mounted on a top plate of the fixed component; a positioning buffer component is mounted on the bottom plate, a bearing seat of the positioning buffer component is positioned between the bottom plate and the top plate, and a product is positioned on the bearing seat; two groups of pressing components capable of pressing the bearing seat are respectively mounted on the front side and the rear side of the top plate; the bottom of a movable connecting block of the drive component is connected with a mounting frame through a connecting base; a first pressing component capable of pressing a bushing into the left side of the product is mounted at the left part of the mounting frame; a second pressing component capable of pressing a bushing into the right side of the product is mounted at the right part of the mounting frame; a sensor capable of detecting whether the bushings are at pressing positions on the two sides of the product or not is mounted at the bottom of the top plate through a sensor fixing seat; the drive component drives the second pressing component to press the brushing on the right side to a preset position, then the second pressing component is taken as a right side support, the first pressing component presses the bushing on the left side in place, and finally the bushing on the right side is pressed in place.

An adaptive method for judging permanent fault of high voltage electric network includes carrying out steps as the follows if system is closed on permanent fault, speeding up action of protective device at that place and transmitting action signal and analog quantity to equipment side through delay, acting differential criterion and quickly outputting after offside tripping signal is received by protective device at equipment side, and driving permanent jump relay to lock step of local side re-closed .

The invention relates to a novel explosion-prevention thin film capacitor, belonging to the field of a capacitor. A "serial-parallel" connection mode is adopted between winding cores, and thus, the influence of winding core breakdown to the capacitor is reduced; energy storage is low by connecting a bypass component in series, and adjacent winding cores are difficult to be damaged during winding core breakdown or a shell is insulated; the heat exchange effect is improved by using heat conduction epoxy resin, heat conduction oil and an arc concave surface, and fault expansion or shell explosion is favorably prevented; with the arrangement of an overvoltage current-limiting device, breakdown caused by too high current in a bypass component circuit is effectively avoided to burn the circuit or explode, and the current and the voltage in the bypass component are ensured to be continuously stable; and with the arrangement of an overvoltage protection device, an electrical component is prevented from impact of overvoltage and high voltage. The capacitor has the advantages of compact structure, low overall loss and low cost, the installation space is saved, the running fault rate is reduced, the quality defect is favorably reduced, and the electrical component is high in capacitor, few in winding core number, high in production efficiency and good in explosion performance.

The invention discloses a preparation method of micrococcus luteus immobilized beads. The method comprises the following steps: burying micrococcus luteus into a sodium alginate-porous soil filtering material mixed solution, so as to stably keep the activity of the micrococcus luteus; enabling the micrococcus luteus to grow into a source for providing resuscitation-promoting factor Rpf proteins for a long period, wherein the Rpf proteins can resuscitate and promote a potential functional bacterial group in a toxic and difficult-to-degrade organic pollution environment, so as to enhance efficient degradation of pollutants. The invention further provides application of the micrococcus luteus immobilized beads in the toxic organic pollutants; compared with common immobilized carrier powder active carbon, the operation cost is lower, and the micrococcus luteus immobilized beads have more remarkable economic benefits and environment-friendly benefits. The micrococcus luteus immobilized beads can be used for a biological treatment system of toxic and harmful, difficult-to-degrade and high-concentration organic industrial wastewater including coking wastewater, high-salt phenol-containing wastewater, printing and drying wastewater, pharmaceutical wastewater and the like.

The invention discloses a vehicle storage battery safety device, comprising a rigid shell and an outage mechanism arranged in the shell; the outage mechanism comprises an electromagnetic coil capable of connecting with a vehicle safety airbag control unit, a static contact and a moving contact; the static contact is arranged at one end of a fixing post; the moving contact is arranged at the opposite end of a moving post of which the other end is glidingly arranged in a center hole of an opening iron core of the electromagnetic coil; a round armature plate is arranged in the middle of the moving post; an elastic check bowl is arranged in the middle of the shell and is provided with elastic fingers in annular distribution and inclined to one side of the electromagnetic coil; the dangling end of each elastic finger forms an armature hole of which the diameter is smaller than the armature plate. The vehicle storage battery safety device effectively solves the problems of low reliability and slow reaction speed of a vehicle collision outage protection device in the prior art, and the vehicle storage battery safety device is simple in structure, high in reliability, fast in action speed and has very high practical value.

The invention relates the electric vehicle driven by hybrid carrier. The electric vehicle comprises electric vehicle, frequency changing control device, super capacity and lead-acid electric battery. The frequency changing control device is connected with speed control point adjustment and braking force control point electric battery. The frequency changing control device, the lead-acid battery controlling switch is connected with super capacity and driving controlling switch, the super capacity switch is between driving controlling switch and super capacity, and the frequency changing control device is connected with super capacity and lead-acid electric battery through driving controlling switch. The driving controlling switch, lead-acid battery controlling switch and super capacity switch are separately connected with switching control devices. Use the super capacity to reclaim the brake kinetic to avoid that the electric battery is damaged because the feedback current is heavy. The invention combines the super capacity with lead-acid battery, realizing the energy-saving and environment protection.

The invention discloses an arc extinguishing mixed transfer switch which comprises a mechanical switch and a first thyristor branch circuit, wherein the first thyristor branch circuit is connected in parallel with a first contact point branch circuit of the mechanical switch; and the first thyristor branch circuit comprises a first bidirectional thyristor unit and a first non-polarity capacitor connected in series. The invention also discloses a switch mixed transferring method for arc extinguishing of the mechanical switch. Because the first non-polarity capacitor is arranged, a low-powered thyristor can be selected, thereby greatly reducing the cost of the thyristor; and simultaneously, when the thyristor has a short circuit fault, the first non-polarity capacitor can substitute the thyristor to play the arc extinguishing affect, thereby greatly decreasing load current and reducing the influence of the thyristor fault on load.

The invention discloses an implementing method of protecting an IEGT (injection enhanced gate transistor) based on a relay protection tripping signal, belonging to the field of control. The implementing method comprises the steps of: introducing a 'tripping' control signal of a breaker into logic trigger conditions of a blocking IEGT triggering pulse module to form a mode of new logic trigger conditions of the blocking IEGT triggering pulse module together with original logic trigger conditions, outputting a 'blocking IEGT triggering pulse' signal through the blocking IEGT triggering pulse module after a microcomputer protection device outputs the 'tripping' control signal, before the 'tripping' mechanical action of the breaker, shielding/blocking the triggering pulse of the IEGT in a frequency convertor so as to turn off the IEGT and avoid the impact on the IEGT caused by a di/dt current mutation value impact, and to protect the IEGT. The protection action mechanism of the implementing method is cleverly set and easily achieved, and according to the protection action mechanism, the needed time of an on-site repair process is shortened greatly, the production can be resumed quickly and the production/maintenance cost can be lowered. The implementing method can be widely applied to the control/protection field of the driving system of a rolling mill set.

The invention belongs to the technical field of water supply and drainage engineering, and particularly relates to a box culvert type large-scale sea water intake structure, a construction structure and a construction method. Four water intake grilles are arranged on four surfaces of a sea water intake respectively, and it can be ensured that four holes are formed for water intake and can intercept marine organisms and marine pollutants, so that the cleanliness of the first water intake process is ensured; a water intake box culvert is arranged below the lowest sea water level and not affected from the tidal level change; a pump house is built on the coast and is free of shocking from sea waves; a sewage pump and a water intake pump are arranged in the pump house, a shutter type grille is arranged between the sewage pump and the water intake pump, the shutter type grille is used for preventing pollutants and marine organisms from entering the pump house so as to keep the cleanliness of water obtained by the water intake pump, a sundry bucket is arranged below the upper end portion of the shutter type grille, and the shutter type grille is driven by a grille motor to bring the pollutants and marine organisms out into the sundry bucket, so that it can be ensured that sundries in water obtained by the water intake pump are little.

The invention discloses a mining roadway multifunctional supporting safety column which comprises safety column bodies, safety doors and position supplementing hydraulic rods. The corresponding safetydoor is arranged on one side wall of the periphery of each safety column body, the position supplementing hydraulic rods are arranged in the top ends of the safety column bodies, connecting blocks are arranged at the top ends of the position supplementing hydraulic rods, and floating blocks are arranged in the connecting blocks. By arranging the connecting blocks, the floating blocks and dampingsprings, a buffering mechanism can be provided for the supporting safety column and a supporting vault, the vibration sense generated in operation machinery or soil can be buffered easily, the supporting column is prevented from shifting or loosening, and the supporting stability of the supporting column is improved; and safety air bags and first-aid kits are arranged in the safety column bodies,the safety air bags can protect surrounding miners against impact of ore after a roadway collapses, meanwhile, the first-aid kits can provide effective rescue for the miners, and personnel and property losses are effectively reduced.

The invention discloses refrigerator compressor performance test equipment. The equipment comprises a mounting base, a first retaining device and multiple test units, wherein the first retaining device and the multiple test units are sequentially fixed on the mounting base; each test unit comprises a non-return device, a venting device, an energizing device and a second retaining device which are sequentially fixed on the mounting base; the first retaining device, the non-return devices and the second retaining devices are sequentially fixed along a refrigerator compressor conveying line, and the venting devices and the energizing devices are fixed on two sides of a detection station on the refrigerator compressor conveying line respectively. Jacking devices are further arranged on the refrigerator compressor detection station between the venting devices and the energizing devices and drive positioning tooling plates through double guide bar cylinders to ascend so as to lift refrigerator compressors, and the refrigerator compressors are separated from the conveying line. The equipment is compact in structure, high in adjusting speed and high in universality, is applicable to different types of refrigerator compressors and guarantees accuracy and reliability of tests.

The invention provides a shock absorption component for packing suction cleaner. The shock absorption component forms a shock absorption projecting and so can preventing the product moving back and forth. The shock absorption component for packing suction cleaner comprises: a bulk which can bundle the suction cleaner bulk and protect the product from outside impact action; a shock absorption protrusion, which forms on one side of the said bulk and can prevent the said cleaner from moving back and forth. The said bulk forms from an upper faceplate, a front faceplate, a profileplane and a rear panel. The said shock absorption protrusion projects out of the said bulk. The said bulk and the said shock absorption protrusion are made in a same working operation simultaneously. You can prevent product from damage and reduce factory cost if use the said construction of shock absorption component for packing suction cleaner.

The invention belongs to the technical field of vehicle electron, and relates to a protection method for charging in starting a vehicle low voltage DCDC (direct current/direct current) transducer. The protection method comprises the following step that after a low voltage DCDC transducer is started, the output voltage of the low voltage DCDC is controlled to take an initiate voltage as a start point, and loading is carried out in every certain time according to a certain step length. Meanwhile during the process of voltage loading, the output current of the DCDC transducer is subjected to real-time monitoring, and when the output current of the DCDC transducer reaches a current protective value, limitation is carried out on a voltage. According to the method, stable rise of the output voltage of the DCDC transducer is realized, and stability in starting is guaranteed; and meanwhile maximum linear promotion of the output voltage of the DCDC transducer is realized in a current allowance range, and the speed and the safety are guaranteed. By the adoption of the method, current is limited by limiting the voltage, and the low voltage DCDC transducer and a low voltage storage battery are protected from being impacted.