94results about How to "Improve practical efficiency" patented technology

The invention discloses a double normalization recognition method for directly forecasting and recognizing a transformer winding fault type, and relates to a novel method for directly forecasting and recognizing the transformer winding fault type based on a hidden markov model and fuzzy recognition. The method comprises the following steps of: step 1, establishing a databank about various mechanical types of transformer windings; step 2, establishing a fuzzy recognition bank, and providing membership degrees and recognition accuracy of each type of fault; step 3, establishing a hidden markov model recognition bank, providing a similar probability and recognition accuracy of each fault recognition; step 4, obtaining a weighting parameter through a hidden markov model recognition probability value; step 5, determining a weighting parameter of the hidden markov model and fuzzy recognition; step 6, obtaining a double normalization recognition index for recognizing the transformer winding fault; and step 7, directly recognizing the state and type of the transformer winding fault through the calculated dg recognition index. The method cannot be influenced by anthropic factors, is strong in environment interference resistance and has no errors caused by obtained conversion.

The invention discloses an industrial control network experimental platform based on filed buses and a control method thereof, and the experimental platform comprises an experimental terminal, a remote control terminal and a communication module. The experimental terminal comprises a programmable controller which controls the field buses to transmit variable information; and the remote control terminal is used for remotely controlling the experimental terminal. The communication module comprises field bus communication units of at least two types and a field bus protocol conversion module; and the field bus protocol conversion module is arranged between the field bus communication units which are connected in series and is used for converting a data packet which can be transmitted by one bus communication unit to a data packet which can be transmitted by other bus communication units. Protocol conversion of various field buses can be realized by the field bus protocol conversion module, thus realizing data communication between two types of field buses; and information transmission among different field bus devices can be constructed in a laboratory, and students can get to know more kinds of field buses.

The invention provides an efficient motorized geotome without moisture loss. The efficient motorized geotome without moisture loss comprises a power source, wherein the power source is connected with a drill rod through drill rod threads; the drill rod is connected with a drill drum through drill drum threads; the drill drum is internally provided with a bulldozing screw rod, and the lower part of the drill drum is connected with a drill head through drill head threads; and the length of the drill drum is at least 30cm, and the length of the drill rod is at least 50cm. By utilizing the technical scheme of the invention, three cutting teeth are uniformly distributed on the drill head, the root parts of the cutting teeth are provided with cutter root circular arcs, thus the flexural strength of the cutting teeth is enhanced, and the service efficiency of the drill head is improved; and based on the design that the cutting face of the drill head is tangential to an inner cylindrical faceand the secondary cutting edge of the drill head is tangential to the cutter root circular arcs and is transitioned to a cutter tip structure through natural circular arcs, the one-time drilling depth of the drill head is ensured to be deeper, and the service efficiency of the drill head is improved.

The invention relates to a scheme and a device, which realize the acquisition of rotation speed signals of a tested motor through a sensor, set the rotation speed signals to be in an identification range of a signal conditioning circuit, after conditioning the signals, transmit the signals into a computer through a data acquisition card, finish processing data through virtual instrument software in the computer, display digital values of a rotation speed, torque and output power obtained through analysis processing on a friendly human-computer interface of the computer and simultaneously record the digital values in corresponding files. The scheme and the device have the following advantages that: experimental conditions for direct current machine testing in the prior art are improved; the whole scheme has good repeatability and avoids personal errors; the device applying the scheme realizes the integration of experimental instruments, so that the integration cost of experimental and testing equipment is remarkably reduced and steps are remarkably reduced; and through proper extension, the scheme and the device can be widely applied to the experiment teaching of other subjects, and can realize the experiment teaching and scientific research of a network and greatly improve the practical efficiency of experimental environments.

The invention discloses a device for recording a multimedia web page. The device comprises a memory sharing device, a playing and recording device and a web page device, wherein the memory sharing device is used for providing initial parameters related to playing and recording; the playing and recording device is used for binding a recording target in a multimedia file according to the initial parameters and recording the bound target in the process of playing the multimedia file; and the web page device is started by a browser based on a Windows operating system framework and used for calling the playing and recording device embedded into the web page device. The invention also discloses a corresponding multimedia recording apparatus and a corresponding method for recording the multimedia web page. The invention effectively extends supports to multimedia file formats capable of playing and recording and has low cost.

The invention discloses a three-dimensional scene reconstruction method based on a GPS information video. The method comprises the following steps that 1, an FOV model set based on GPS information is constructed and redundancy frame data are removed; 2, a reconstruction frame matrix is constructed; 3, a key frame is extracted; 4, a target scene is reconstructed in a three-dimensional mode. According to the three-dimensional scene reconstruction method based on the GPS information video, the video key frame can be rapidly and accurately extracted, and therefore the precision and efficiency of the three-dimensional scene reconstruction method are improved.

The invention discloses an automatic fire extinguishing electric routing inspection unmanned aerial vehicle. The automatic fire extinguishing electric routing inspection unmanned aerial vehicle comprises a machine body and propellers arranged at the rear end of the machine body. A dry powder storage cavity is formed in the machine body and internally stores dry powder. An open door is further formed in the belly part of the machine body and controlled by an electromagnetic valve switch to be opened and closed. A routing inspection circuit is arranged in the machine body and comprises a master control unit, an aerial photography camera and a communication device. The communication device, the aerial photography camera and the electromagnetic valve switch are in signal connection with the master control unit. The communication device comprises an onboard antenna arranged at the head of the machine body and a communication chip in signal connection with the onboard antenna. The unmanned aerial vehicle and fire disaster treatment equipment are integrated, the unmanned aerial vehicle can treat ignition points in time during routing inspection, fire disaster spreading is prevented, and the practical efficiency is improved; and the novel antenna is arranged, and the remote communication quality is better.

The invention relates to a process for manufacturing a press-forming mould for manufacturing parts. For solving the technical problem that the coaxiality of cavities is difficult to guarantee when a multi-cavity mould is manufactured, the invention provides a process for manufacturing a press-forming mould for simultaneously manufacturing a plurality of parts, and the process comprises the following steps of: adopting self-manufactured tools and carrying out positioning by using the tools, so that the central holes of upper and lower templates subjected to processing can be ensured to be in a same axis; and positioning and processing cavities by using the central holes, so that the coaxiality of the plurality cavities of moulds meets the drawing requirements. The process provided by the invention is reasonable, and the production efficiency and practical efficiency of the process are greatly improved.

The invention discloses a module socket capable of being used for a wall extension socket and an extension socket. The module socket comprises a mains exchange module, a wall extension base module, a socket module, a charging socket module and a safe guard board. The module socket capable of being used for the wall extension socket and the extension socket is characterized in that the mains exchange module and the wall extension base module can supply a mains bridge connection to the socket module or the charging socket module, the mains exchange module and the wall extension base module are provided with an AC/DC switching circuit in a built-in mode so that touch switches on the mains exchange module, the wall extension base module, the charging socket module and the socket module can be provided with power, the number of the AC/DC switching circuit is one, or the AC/DC switching circuit is not arranged, the mains exchange module is provided with a power switch, and the power switch is in a touch mode or a button mode. The module socket capable of being used for the wall extension socket and the extension socket is flexible in combination, and capable of increasing or decreasing the number of jacks of the extension socket and the wall extension socket. Meanwhile, the wall extension socket and the extension socket can be exchanged, everything is made to be best used, repeated purchasing is avoided, and using cost is lowered.

The invention discloses an integrated ultrasonic longitudinal-torsion composite turning tool suitable for a difficult-to-machine material. The tool comprises a tool body, the front end of the tool body is connected with a tool head, the tool head is of a wedge-shaped structure, and the front end of the tool head is provided with a machine clamping blade. According to the tool, a screw is used forfixing the tool on a tool rest of a lathe turntable, the signal of an ultrasonic generator is input into a transducer assembly through an aviation plug, so that a certain rule of high-frequency vibration is generated, then a tool nose is driven to generate longitudinal torsion amplitude, and ultrasonic turning is realized; and the whole device is small in volume, easy to operate, disassemble or assemble is convenient, and machining precision is high compared with traditional turning, moreover, a machining procedure is reduced, the machining efficiency is improved, and meanwhile, the cost is reduced.

The invention discloses a computer data processing system, comprising a host computer, which comprises data storage device, data processor and multiple interfaces, where the storage device is stored with a main database, and the interfaces are connected with external network and processing terminals, and the data storage device also comprises an agency database, and the agency database and the main database are interconnected. And the invention also discloses a data processing method for the system and the application to computer systems in financial industry. And the invention can assist the main database to implement the required functions by the database agency technique on the condition of assuring higher safety, and has access speed uninfluenced or less influenced, and the invention is especially suitable for complex bank core system.

The invention provides an electric brush for a treadmill motor. An electric brush preparation method comprises steps that matrix powder materials and a binder solution are mixed uniformly to prepare an electric brush raw material mixture; the electric brush raw material mixture is dried and crushed to acquire electric brush raw material powder; the electric brush raw material powder is added to a pressing die to carry out pressing processing to acquire an electric brush blank; thermal curing processing on the electric brush blank is carried out to acquire a half-finished electric brush product; finished product processing on the half-finished electric brush product is carried out to acquire a finished electric brush; the matrix powder materials comprise graphite, polyphenyl ester resin, polytetrafluoroethylene and metal powder. The electric brush has advantages of proper electrical resistivity, good wear-resisting performance, good commutation performance and low spark grade and further has more important advantages of high efficiency, low noise and good product stability.

The invention provides a plastic film overturning and heat-sealing platform. The plastic film overturning and heat-sealing platform comprises a machine frame, an overturning device, top end heat-sealing devices, a side surface heat-sealing device and a fixed platform. The fixed platform is arranged in the middle of the machine frame through the overturning device, the side surface heat-sealing device is arranged on the machine frame, and the top end heat-sealing devices are correspondingly arranged above and below the fixed platform through lifting devices. A positioning base can be overturnedthrough the overturning device, the bottom end of an object to be film-sealed can be film-sealed by the top end heat-sealing devices, and the object to be film-sealed does not need to be taken down,the top end heat-sealing devices are used for heat-sealing after manual overturning is completed, labor is saved, and the work efficiency is improved.

The invention discloses a double helix structure total heat exchanger core with reinforcing ribs. The double helix structure total heat exchanger core with the reinforcing ribs comprises a shell which is internally provided with a fresh air channel, an exhaust channel, a fresh air inlet, a fresh air outlet, an exhaust air inlet and an exhaust air outlet; the reinforcing ribs are arranged in the fresh air channel and the exhaust channel which are each of a helix structure, and the fresh air channel and the exhaust channel form a double helix structure; the fresh air outlet is connected with the internal end of the helix-structure fresh air channel, the exhaust air inlet is connected with the internal end of the helix-structure exhaust channel, the fresh air inlet is connected with the external end of the helix-structure fresh air channel, and the exhaust air outlet is connected with the external end of the helix-structure exhaust channel. According to the double helix structure total heat exchanger core with the reinforcing ribs, the reinforcing ribs are arranged in the helix-structure fresh air channel and the helix-structure exhaust channel, and the structural strength of the fresh air channel and the exhaust channel is enhanced; by means of the helix structures, contact time of fresh air and exhaust air is longer, and the energy exchange is more thorough.

The present invention provides a centrifugal chemical water pump comprising a pump body, an impeller, a motor driving the impeller. The pump body comprises a pump base, a pump cavity and a pump cover. The pump cavity is mounted on pump base, a ring protruding edge according to involute curve shape is arranged on side wall of pump cavity, the two ends of protruding edge are provided on two sides of water outlet, the side wall thickness of protruding edge changes gradually from thick to thin. The water outlet direction is identical to the tangent direction of most involute curve on side wall ofprotruding edge. The impeller in umbrella shape mounted in pump cavity comprises a lamina bracket wheel, an impeller cover, a water inlet, a water outlet. The impeller cover superposed on lamina bracket wheel, and the space forms impeller outlet, the height of water outlet can be adjusted by changing height of impeller. The pump cover is mounted on upper hull of pump cavity, the wall from inside of bottom of pump cover to inlet in center is inverse umbrella shape, and the surface combining dimension of pump cover and impeller are identical.

The invention relates to a mould structure. In order to solve the technical problem that a mould for manufacturing a rubber part provided with two flanges is low in efficiency at present, the invention provides a mould which is reasonable in structure and easy to take out a part. The mould comprises a round upper die, a round lower die and a round middle die, wherein the upper die is matched with the middle die and the middle die is matched with the lower die through conical surfaces so that the upper die and the middle die are superimposed together and the middle die and the lower die are superimposed together; a stabilizing mail hole is formed in each of the upper die and the lower die; the upper die is connected with the lower die through stabilizing nails; a mandrel hole is formed in each of the upper die and the lower die; a mandrel penetrates through the mandrel hole of the upper die, an inner cavity of the middle die and the mandrel hole of the lower die; and a rubber part die cavity is formed among the upper die, the middle die and the lower die. The mould is characterized in that the middle die is longitudinally divided into a left part and a right part, and the left part and the right part are locked through a clamping ring after being closed up. The mould is simple in structure and low in cost, and has very high production efficiency and practical efficiency.

The invention discloses a forest fire prevention pump. The forest fire prevention pump comprises an engine, a reduction gearbox and a high-pressure plunger pump, wherein the engine is connected with one end of the reduction gearbox; the other end of the reduction box is connected with the high-pressure plunger pump; the high-pressure plunger pump is provided with a plunger pump shaft which penetrates through a pump body; the engine is matched and connected with a sun gear inside the reduction box by a crankshaft of the engine; the sun gear is meshed with a planet gear; the planet gear is meshed with an inner gear ring; the planet gear rotates about a planet gear shaft on a planet frame; a reduction box front cover and a reduction box rear cover are arranged on the two sides of the inner gear ring. The forest fire prevention pump disclosed by the invention has the beneficial effects of solving inconvenience caused by speed reduction of a belt and speed reduction of a common multi-stage gear box by arranging reduction boxes different in structure, reducing the overall structure of the forest fire prevention pump, and being more convenient to carry and higher in practical efficiency.

The invention provides a rotary type two-end heat-sealing die. A top-end heat-sealing device and a bottom-end heat-sealing device are separately arranged on an adjusting device through a rotating device; and the top-end heat-sealing device and the bottom-end heat-sealing device comprise heat-sealing disks, film-sealing heaters and pressure sensors, the heat sealing disks are connected with a positioning guide device, the film-sealing heaters are arranged on the heat-sealing disks, the pressure sensors are arranged on the heat sealing disks, and the pressure sensors are used for detecting whether the top-end heat-sealing device and the bottom-end heat-sealing device are in contact with articles to be heat-sealed or not. The upper end and lower end of the articles to be heat-sealed can be heat-sealed at the same time, so that the heat-sealing efficiency is improved, the pressure sensors are arranged on the heat-sealing device, the distance between the heat-sealing device and the articlesto be heat-sealed can be better controlled, the purpose of effective operation can be achieved for each heat-sealing, and the heat-sealing quality is improved.

The invention provides a stretching expanded head anchor hole inner diameter measuring device, which comprises a pulling rod (1) and a pipe body (2) arranged coaxially from inside to outside, wherein the pulling rod (1) passes through the pipe body (2) along an axis direction; the bottom end of the pulling rod (1) is provided with an opening plate (4); the disc of the opening plate (4) is vertical with the pulling rod (1); the circumference of the pipe body (2) is symmetrically provided with multiple measuring rods (3); the top end of each measuring rod (3) is hinged with the bottom of the side wall of the pipe body (2); and the opening plate (4) is located between symmetrical measuring rods (3). As for a non-uniform expanding anchor hole expanded head, the device can quickly and precisely measure the inner diameter of the anchor hole expanded head, the measuring time can be greatly saved, and the measuring efficiency is improved.

The invention relates to the field of mining machineries, in particular to a reciprocating impact part of a multistage protection sealing telescopic sleeve. The reciprocating impact part structurally comprises a multistage protection guide shaft box body, a crankshaft, a connecting rod, a guide impact piece, guide pieces and a main reciprocating tooth. The multistage protection guide shaft box body supports the guide pieces; the guide pieces support the guide impact piece to guide the guide impact piece; the crankshaft is connected with the connecting rod; and the crankshaft drives the connecting rod driving the guide impact piece to impact in a reciprocating mode. One end or the two ends of the guide impact piece stretches/stretch out of the multistage protection guide shaft box body; and the multistage protection sealing telescopic sleeve is arranged in the position, at the stretching end of the guide impact piece, of the multistage protection guide shaft box body. The guide impact piece comprises a guide rod sealing section. The shape of the cross section of the inner diameter of the multistage protection sealing telescopic sleeve is matched with the shape of the cross section of the outer diameter of the guide rod sealing section. The guide rod sealing box body section and a box body sealing piece are matched to prevent dust, muddy water, material and the like from entering the box body. According to the structure, maintenance in site is reduced, the maintenance cost is saved, the service life of a reciprocating mining machine is greatly prolonged, and the practical efficiency of the reciprocating mining machine is greatly improved.