139results about How to "Solve fit problems" patented technology

The invention belongs to the technical field of music teaching equipment, in particular to a music score and fingering electronic lamplight analog display method and a keyboard instrument auxiliary teaching device. The method comprises the following implementation steps: (1) converting a music score or an MIDI (Musical Instrument Digital Interface) file into an electronic music score file which can be decoded by using a display device together with the fingering information of each pitch; (2) saving the converted electronic music core file in mobile storage equipment, and connecting the mobile storage equipment to the display device; (3) erecting the display device above keys corresponding to each key, and displaying pitches, lengths, rhythms, beats, themes, harmonics, combos and fingering in the form of light by using the display device along with the playing of an electronic music score file. By directly placing an electronic music score display screen on the keys in the auxiliary teaching device for implementing the method, the problem of matching of hands and eyes of a learner is solved completely, and the learning interest of the learner is increased greatly.

The invention discloses a system and a method of full-automatic continuous quantitative loading of a railway freight train. The system comprises a quantitative bin which is arranged in a train carriage loading region across a train track through a support, a material buffering bin is arranged on the upper side of the quantitative bin, a feeding gate is arranged at the lower end of the buffering bin in an alignment mode, and a material discharging gate is arranged at the lower end of the quantitative bin; the lower end of the quantitative bin is connected with a loading sliding groove, a vehicle loading control system is used for control the buffer bin and the quantitative bin to carry out continuous and quantitative loading of a freight train by judging the identification and the speed ofa vehicle identification. According to the system and the method, the problem of synchronization in cooperation and coordination of equipment and the train carriage is solved, the equipment feeding issynchronous with the train, manual intervention is not needed in a cooperating problem of the sliding groove and the carriage during material discharging, so that the labor intensity is reduced; andautomatic adjustment of the loading sliding groove can be realized, weighing, loading and leveling are realized, and the transportation efficiency is improved.

The invention discloses electronic equipment. The electronic equipment comprises N motors, a processor and a controller, wherein N is a positive integer greater than or equal to 2; the N motors are uniformly distributed in an electronic equipment space; the processor is used for judging whether a trigger condition is satisfied according to the current state of the electronic equipment; and the controller is used for controlling at least one motor of the N motors to start according to a preset rule when the trigger condition is satisfied so as to ensure that the at least one motor is in a working state in a preset time. Meanwhile, the invention furthermore discloses an electronic equipment control method. By adopting the technical scheme in the invention, the problem of weak vibration sense or no vibration sense caused by the heavy weight of the electronic equipment can be solved, the problem of coordination among the motors can be solved at the same time, and the user experience can be improved.

The invention provides a power grid failure traversing system and method of a 2 MW and more than 2 MW double-fed wind generating set complete machine. The system comprises a convertor system, a controller system, a pitch system and a torque limiter. The method comprises the following steps: detecting the operation condition of a power grid; judging whether a failure appears: if not, returning to the step S1, and if so, dynamically switching to a failure traversing operation mode; detecting the operation condition of the power grid; and judging whether the failure recovers: if not, returning to the step S7, if so, recovering a normal operation state, and then returning to the S1. According to the invention, while the protection actions of each part in a failure period are ensured, the conjugation problem of an integrated system is solved, no-network operation in the failure period is realized, the power grid is supported, and the service life of a machine set is prolonged; and the failure rate of the machine set is reduced, thereby greatly reducing the maintenance cost of the machine set.

The invention relates to a fault indicator and distributed intelligent terminal matched overhead distribution network fault positioning method, and belongs to the technical field of relay protection of power systems. On the premise that overcurrent relay protection of a traditional distribution network is not changed, distributed intelligent terminals are installed on circuit breakers at all trunk section points and fault indicators are installed on all branch circuits, the installation positions of the distributed intelligent terminals are taken as nodes, a relation between the fault indicators and the nodes is defined according to the positions of the nodes and the fault indicators, and trunk units and branch units are divided and numbered to form a unit adjacency list. When faults occur, an automatic reclosing lock recloses transient faults, the distributed intelligent terminals isolate permanent faults, and meanwhile, the distributed intelligent terminals and the fault indicators detect current values and compare maximum branch current values in the relevant unit adjacency list to position trunk faults and branch faults.

The invention relates to a magnetic polydimethylsiloxane (PDMS) mask-based micro-pit array electrolytic machining system and method and belongs to the field of micro-electrolytic machining. The system comprises a cathode tool (1), a PDMS mask, an anode workpiece (3), a clamp (5), an electrolyte (6) and a power supply (7) and is characterized in that the PDMS mask is a magnetic PDMS mask (2), and a permanent magnet (4) for attracting the magnetic PDMS mask (2) to enabling the magnetic PDMS mask (2) to be closely attached to the surface of the anode workpiece (3) is further arranged below the anode workpiece (3). The system and the method are adopted for electrolytic machining, the magnetic PDMS mask can be closely attached to the surface of the anode workpiece under the action of a magnetic field, and the electrolytic machining locality of a micro-pit array is improved.

The invention provides a four-rope grab bucket slag material grabbing system which comprises a computer, a PLC, a lifting frequency converter, an incremental encoder A, an opening-closing frequency converter, an incremental encoder B, a cart and trolley positioning device, a twisted rope detecting device, an overload limiter, a cart walking motor, a trolley walking motor, a runway girder, a travelling crane trolley and a grab bucket, wherein the travelling crane trolley is in sliding fit with the runway girder; the computer, the lifting frequency converter, the opening-closing frequency converter, the cart and trolley positioning device, the twisted rope detecting device, the overload limiter, the cart walking motor and the trolley walking motor are connected with the PLC separately; and the PLC and the computer realize data exchange through the wired or wireless communication manner. Compared with the existing manual operation, the four-rope grab bucket slag material grabbing system can still carry out safe operation on the condition that heavy fog or water vapor affects the sight line to reduce potential safety hazard and prevents a worker from operation under sulfur-containing water vapor to reduce health hazard.

The invention discloses a digital home remote video monitoring system based on a next-generation network, which comprises a video capture device, a video data encoding module, a self-adaptive encoding module, a service quality request module, a home gateway and an intelligent home service platform module. The intelligent home service platform module comprises a terminal display module, a monitoring center module and a video data storage device. Based on the next-generation network (NGN), the invention can realize the remote video monitoring with low cost, and promptly reflect the real-time situation of the monitored object. Moreover, the invention has the advantages of good universality, easy transformation of the achievements, no need for additional equipment and simple system requirements, and avoids the coorperation problem.

The invention relates to a method for assembling an automobile gauge point. The method is realized by the following steps: putting an injected molding component point into a lower cavity plate of a needle guard; positioning a point in the cavity by two positioning holes on the point and two positioning nails on the lower cavity plate; after an upper cavity plate of the needle guard and the lower cavity plate are connected, the point is completely coated by plastics; and combining the point and the needle guard by injection; and staying the molded combined part in the lower cavity after the upper cavity plate and the lower cavity plate are separated, and separating the product and the die by an ejector. The method has the advantages that the problem of match of all components in assembly can be solved so as to improve the yield of products because the point and the needle guard form into a part; and the unqualified rate of the products is reduced to below 5 per mill from the original 10 percent so as to improve the working efficiency of the company.

The invention discloses a preparation process of a high-weldability flaky silver graphite contactor of a parallel structure. The process sequentially comprises the following steps that 1), the use amount of needed graphite powder and silver powder is calculated according to the material ratio of the silver graphite contactor needing to be prepared, powder mixing is carried out after weighing is carried out, and mixed powder is obtained; 2), the obtained mixed powder is subjected to isostatic compaction, and a silver graphite billet is obtained; 3), the obtained silver graphite billet is subjected to decarburization, and a decarburized silver graphite billet is obtained; 4), the obtained decarburized silver graphite billet is sintered under a protective atmosphere condition, and a sinteredsilver graphite billet is obtained; and 5), the obtained sintered silver graphite billet is subjected to conventional extruding, normal-temperature rolling and conventional stamping, and the silver graphite contactor is obtained. The preparation process is simple and low in production cost, and the machining performance and welding performance of the contactor material can be effectively improved.

The invention discloses a method used for voice service used of user equipment, the use equipment and a device. The UE comprises a first transceiver resource corresponding to primary component carriers PCC of a first network and aggregated with support carriers (CA), and a second transceiver resource corresponding to secondary component carriers SCC of the first network. The first network can be used for the data business of the UE. The method comprises the steps of: obtaining the state information of the SCC, wherein the state information indicates whether the SCC is in an activated state; and according to the state information, controlling the second transceiver resource to monitor a second network, wherein the second network can be used for performing the voice business. By adopting the method used for voice service used of user equipment, the use equipment and the device, the power consumption is lowered.

The invention provides a module node structure connected by adopting a clamping device and a construction method thereof. The module node structure comprises an upper-layer stand column, an upper-layer bottom cross beam, an upper-layer bottom corner piece, a lower-layer stand column, a lower-layer top cross beam, a lower-layer top corner piece, a connecting plate, a locking device and a connectingbolt, wherein the locking device comprises a positioning pin, an annular hoop, a clamping bolt and a clamping block; a threaded hole channel is formed in the positioning pin, and an external thread is arranged on the outer surface of the positioning pin; an annular convex block is arranged at the upper part of the positioning pin; the lower end of the positioning pin is connected with the lower-layer top corner piece; the lower part of the annular hoop sleeves the positioning pin, and the upper part of the annular hoop is located in a sleeve of the upper-layer bottom corner piece; the upper part of the annular hoop is divided into a group of arc-shaped plates; clamping blocks are arranged on the outer side surfaces of the arc-shaped plates; the clamping block is placed at the top of the annular hoop; the clamping bolt penetrates through the clamping block and is in threaded connection with the positioning pin; and the arc-shaped plates are opened outwards, and the clamping blocks areclamped in clamping grooves. According to the module node structure, the technical problems that traditional positioning between modules is difficult, the difficulty of field connection is large, andthe reliability of connection between the modules is poor are solved.

The invention relates to a high-wind-quantity purification fresh air machine using a hollow fibrous membrane as a main filtering material. The fresh air machine consists of parts such as a machine cabinet, an air inlet assembly, a front filtering material assembly, a membrane assembly array cabin, a membrane assembly, a confluence branch pipe box, a confluence sound insulation and attenuation cabin, a fan motor unit, a fan motor sound insulation and attenuation cabin, a roundabout air outlet hole passage, an air outlet sound attenuation cabin and an air outlet. The multistage sound insulation and attenuation cabin chamber is used, so that the noise problem of the high-wind-quantity purification fresh air machine is solved. Over ten thousands of cubic meter of clean fresh air can be provided. As the hollow fibrous membrane, particularly a polytetrafluoroethylene hollow fibrous membrane is used as the main filtering material, great dust containing capacity is realized and the maintenance and operation cost can be greatly reduced.

The invention relates to a technique for producing a spherical distributor, the technique is characterized in that a pipe joint and an inner long pipe are respectively arranged inside and outside the top part of an end enclosure in the upper half part; planes are grinded at each A-B position needed to be drilled for drilling and locating; the fall size of A point and B point is obtained by measuring and is used as the fall size for processing the incline at the position of the orifice of an inclined jointing pipe; then the inclined jointing pipe is processed; a tapered pipe is arranged at the bottom part of an end enclosure in the lower half part; then an inner short pipe is arranged in the bottom part of the end enclosure in the lower half part to lead the tapered pipe, the inner short pipe, the pipe joint and the inner long pipe to be arranged on the same line; moreover, an inner piece is welded in the end enclosure of the lower half part; the tapered pipe is respectively welded with each hole in a circle in the end enclosure of the lower half part; finally the end enclosure of the upper half part and the end enclosure of the lower half part are jointed; an automatic-welding circular seam is employed between the end enclosure of the upper half part and the end enclosure of the lower half part. The technique for producing the spherical distributor has the advantages of solving the problem of localization and saving the producing cost.

The invention discloses an aluminium wheel spinning mould ejector. The opening position and the angle of the conical surface of a low die ejector 4 are changed, the middle position of a spoke in the prior art is changed to the circular arc on the joint of the spoke and a rim, and the angle is changed to 45 degrees from 50 degrees. An anti-rotation groove is milled on the faying surface of a spoke back cavity, the connection position of the low die ejector and a guiding copper bush is changed, and an upper die ejector is decomposed into a new upper die ejector 8 and a guidepost 6. The upper die ejector 8 is connected with an upper die bolt, and the guidepost 6 is connected with the upper die bolt to perform the action of guiding. A disc spring 7 is arranged between the new upper die ejector 8 and an upper die 1.

The invention relates to an abrasion-resisting and corrosion-resisting composite impeller, and belongs to the field of fluid machinery. The composite impeller comprises a metal wheel hub and a ceramicblade; the center of the metal wheel hub is provided with a connecting ring, and the outer wall of the connecting ring is provided with connecting rods in a radially outward extending mode; the ceramic blade is of an impeller blade structure machined through ceramic materials, and a hub positioning groove which is matched with the front end of the metal hub in appearance is reserved in the centerof the rear end of the ceramic blade; and the metal hub is inserted into the hub positioning groove in the rear end of the ceramic blade, and the metal hub and the hub positioning groove of the ceramic blade are glued and fixed through resin glue. According to the abrasion-resisting and corrosion-resisting composite impeller, the structure is simple, mounting is convenient, the problem of fast corrosion of the impeller under high abrasion and high corrosion working conditions is solved, and the cooperating problem of the ceramic impeller and a shaft is also solved.

The invention discloses a CPCI module cooling method. The method is implemented on the basis of a CPCI module. The CPCI module comprises a master board, a heating element installed on the master board, and a cold plate installed on the master board and used for transmitting heat of the heating element. The method comprises the specific implementing steps that the cold plate is designed to be of an elastic stretchable structure so that the compressibility is achieved, so that when the CPCI module makes contact with a case, the CPCI module can be tightly attached to the case. Compared with the prior art, the CPCI module cooling method solves the problem of fitting of the cold plate and the case, and contact thermal resistance of the cold plate and the case is reduced; by means of the principle of phase change and heat conduction, the thermal resistance of the cold plate is decreased, so that the heat resistance of a heat path from the heating element of the module to the case is greatly lowered.

The invention discloses a rear axle processing machine tool, which comprises a machine tool body. A portal frame is arranged on the machine tool body; a workbench driven by a first power device and sliding along an X axle is also arranged on the machine tool body; a saddle driven by a second power device is slidably arranged along a Y axle and located on the portal frame above the workbench; a slide seat driven by a third power device is slidably arranged on the saddle along a Z axle; a first spindle driven by a fourth power device is arranged on the slide seat; and end face processing mechanisms arranged in a mirroring way are arranged on two sides of the machine tool body, and are located on one side, provided with the first spindle, on the portal frame. The simultaneous processing of two upper ends and three middle holes on a rear axle can be completed through the one machine tool, so that compared with a traditional rear axle processing machine tool, the problem of requiring the matching of multiple machine tools and multiple clamping is solved, a lot of rear axle transfer time is saved, and the working efficiency is greatly improved; and meanwhile, the rear axle only needs to be clamped and positioned at a time, so that the location degree of the rear axle during processing is ensured, and further the processing accuracy is effectively improved.

The invention discloses a control system and method for an oil-drive variable-pitch multi-rotor aircraft. The aircraft employs an oil-drive motor to drive a plurality of propellers, and the propellers have the same rotating speed. The aerodynamic force and aerodynamic moment of the aircraft are changed through the changing of the pitch of each propeller, thereby achieving the posture and position control. Compared with a conventional multi-rotor aircraft, the aircraft is long in endurance, is large in carrying capacity, is low in fault rate, is good in maneuvering performances, and is smaller in mass. The control method solves a problem of cooperation of pitch control and the control of the rotating speed of an engine, greatly improves the sensitivity of oil-drive multi-rotor power output, solves a problem, caused by the time delay of the engine, of the control of the whole aircraft, and enables the maneuverability and control accuracy of the oil-drive variable-pitch multi-rotor aircraft to be guaranteed.

The invention discloses a cable checking circuit structure and a common-line-free cable checking method. Only tested cables without any common reference end are needed for a circuit crossing a checking signal sending end and a checking signal receiving end, each tested cable checking circuit comprises a current-limiting resistor, a tested cable, an isolation diode and a signal coupler of the checking signal receiving end, and the tested cable, the isolation diode and the checking signal receiving end are sequentially connected from a checking signal sending end equipment port. Cathodes of the isolation diodes are connected with anodes of input ends of the signal couplers, cathodes of input ends of the signal couplers are connected with anodes of the isolation diodes, and the cathode ends of the isolation diodes of the tested cable checking circuits or anode ends of input ends of the signal couplers of the tested cable checking circuits are connected through wires. Unique signals attached to the cables are sent to the corresponding cables respectively and sequentially by the sending end, and serial numbers of the cables are displayed after the signals are received by the receiving end. By means of the method, long-distance cable checking can be quickly and accurately carried out by one person without common lines.

The invention relates to a power distribution device of a power system, in particular to a lightning protection support column insulator. The insulator is provided with a core rod, and two ends of thecore rod are respectively provided with an electrode and a wiring device. The insulator comprises a positioning device cooperating with the core rod, and the positioning device can rotate relative tothe core rod. The positioning device is connected with an arc starting rod. The insulator can adjust the angle between an arc starting body and an installation conductor, can guarantee that the safety distance between a spherical head of the arc starting rod and other metals or conductors is greater than a discharge interval distance of an insulating arc starting body.