63results about How to "Avoid maintenance difficulties" patented technology

The invention discloses a power secondary system modeling method and a system. A model which is established according to the method and the system comprises a data model, a resource model and a dependence relationship model. The problems in the three aspects of classification object management, the combination of management object organization and power grid architecture, and the description of a complex relationship are solved. The complexity and the maintenance difficulty, which are caused by the fact that the same model is used to solve the problems in the three aspects, are avoided. Related concepts of an IEC61970 CIM model is introduced into the resource model. Each management object of a secondary system is combined with a power grid primary model. A unified model of primary and secondary models of a power grid are provided. For a business dependence relationship description method, four kinds of basic services are summarized. Public infrastructure services are abstracted. The complex multi-to-multi dependence relationship is decomposed to various kinds of services. Re-organization is carried out under the guidance of finally reflecting the business operation condition. The problem of defining the dependence relationship among a business, software and hardware and between the business and other businesses is solved.

The invention relates to the technical field of fast moving of ultra-large mining height (greater than or equal to 5m) fully-mechanized mining faces of coal mines, and provides a surrounding rock control method for a large-section dismantling tunnel of a fully-mechanized mining face. The method comprises the following steps of performing driving from a roof of a coal seam along a stop line to form a tunnel communicated with gate roads on the two sides of the mining face, and performing supporting; driving a plurality of coal rooms to form roof control coal pillars on the side, close to the mining face, of the tunnel, and performing supporting, performing downward bottom extension on the tunnel along the stop line to form a part of section of the dismantling tunnel, supporting the two sides of a brush expansion part, and hardening a bottom plate; pushing the mining face ahead, and cutting the remaining coal pillars between the current mining face and the stop line to form the dismantling tunnel of the fully-mechanized mining face. According to the method, bottom coal for side protection and the coal pillars for roof control are reserved, so that a chock support and other temporary supports, which are required to be arranged when a conventional mining face is communicated with the dismantling tunnel, are removed, heavy equipment for an ultra-large mining height (greater than or equal to 5m) fully-mechanized mining face is safely and reliably dismantled, the dismantling cost is greatly lowered, and reliable guarantee is provided for the rapid moving of the mining face.

The invention discloses a technical device which is reliable in operation and is suitable for recycling the heat energy of the shower waste water of all bath centers. The device comprises a hot water tank, a warm water tank, a water-containing tray heat exchanger and a warm water and tap water synchronous and equivalent drain/inlet valve. The technical device can be realized through the measures as follows: when taking a shower, a human body stands on a partition plate, the waste hot water of the shower leaks from the partition plate to the water-containing tray heat exchanger, and the upper surface of a water-containing tray is provided with a heat exchange plate (a stainless steel plate or an aluminum plate), and the lower surface of the water-containing tray is provided with a heat exchange pipe. Tap water flows to the warm water tank in the reverse direction together with the shower waste water through the heat exchange pipe of the heat exchanger. When the shower is carried out, a warm water valve is opened firstly, and then, a hot water valve is opened when the water temperature of the shower cannot meet the requirement, so that the water temperature is increased to the temperature required by the shower. The warm water valve and a tap water inlet valve of the shower are synchronously and equivalently controlled, thus, the tap water inlet valve automatically opens when the warm water valve is opened, and warm water discharged from the warm water tank enters the warm water tank after heat exchange is carried out on the warm water by equivalent tap water. When a shower room is cleaned every day, the partition plate can be opened to clean the heat exchange plate of the water-containing tray heat exchanger, thereby, filth blockage is avoided, and the heat exchange efficiency of the heat exchanger is improved.

The invention discloses a computer vision based non-contact type data transmission method. The computer vision based non-contact type data transmission method comprises the steps of 1, coding and displaying an image sequence, to be specific, 101, generating a standard checking image sequence, 102, building a standard data image sequence, and 103, displaying the image sequence; and 2, decoding the image sequence, to be specific, 201, obtaining an actual checking image sequence, 202, extracting an actual mark point of the actual checking image sequence and calculating a global transformation homographic matrix, 203, extracting a vertex coordinate of each grid of the actual checking image sequence, 204, resolving each grid affine transformation parameter of the actual checking image sequence and determining binary information carried by each grid of the actual checking image sequence, 205, obtaining an actual data image sequence, and 206, decoding the actual data image sequence. As a camera lens is utilized for acquiring computer image information, single-way transmission of computer intranet and extranet information is realized, and efficient communication of computer information between a secret-relating network and a non-secret-involved network can be solved efficiently.

The invention discloses a radio frequency identification locating method based on utilization of unmanned aerial vehicles. The method is characterized by comprising the following steps that at least three unmanned aerial vehicles carrying FRID readers identical in type parameter are prepared, and the unmanned aerial vehicles fly from at least three different directions to a storage area of targetgoods, wherein the flight altitude of each unmanned aerial vehicle is equal; when one unmanned aerial vehicle reads the IDs of electronic labels of the target goods, the unmanned aerial vehicle immediately sends current longitude and latitude information to a server through a wireless network; when all unmanned aerial vehicles send back longitude and latitude information, the server calculates thelongitude and latitude of the target goods according to the longitude and latitude information; the server sends the longitude and latitude of the target goods to a mobile terminal, and the mobile terminal can quickly find out the goods through a navigation device. The locating deviation of the target goods is not greater than 5 m, great convenience is brought to searching of goods of a goods yard such as a port and a pier, only the unmanned aerial vehicles need to be maintained, and the problem that active tags are difficult to maintain can be completely avoided.

The invention provides a vehicle remote diagnosis system and a method, wherein first diagnostic equipment and a vehicle-mounted system can be connected through an OBD connecting line, remote communication connection is established between the first diagnostic equipment and second diagnostic equipment, and the first diagnostic equipment can transmit vehicle data to the second diagnostic equipment, the second diagnostic equipment diagnoses the vehicle according to the vehicle data, the second diagnostic equipment is used for remove diagnosis on the vehicle based on the vehicle data after receiving the vehicle data, and feeding the diagnostic data back to the first diagnostic equipment; when the first diagnostic equipment cannot diagnose and maintain the vehicle, remote professional diagnostic equipment can be used as the second diagnostic equipment and even third diagnostic equipment, and the first diagnostic equipment is used as a transmission medium, so that the second diagnostic equipment can diagnose the vehicle remotely, just like being attached to the vehicle, therefore, a maintenance shop can maintain various vehicle types without buying excessive professional diagnosis equipment, and the operation and maintenance cost is reduced.

A pinion-and-rack driven elevator using a planetary gear reducer is characterized in that a power transmission system includes a planetary gear reducer and a synchronous belt transmission system; an electric traction system is a motor system including a permanent magnet direct current motor system or a permanent magnet alternating current synchronous motor system; a right lower drive gear and a right upper drive gear are engaged with a right rack fixed in the vertical direction, and a left lower drive gear and a left upper drive gear are engaged with a left rack fixed in the vertical direction; rolling guide shoe rollers are elastically pressed against non-tooth-shaped guide rail surfaces of the left rack and the right rack and drive an elevator car to move upward or downward; a power loss band-type brake is arranged on a brake wheel coaxial to the motor, and a dual-backup structure is adopted; and an electric interlocked and mechanical interlocked outage star-connection unit circuit is arranged in an electrical control system.

The invention discloses a pinion-and-rack type elevator under balanced drive. The pinion-and-rack type elevator is characterized in that a driving system is a balanced driving system; an active force transmission system is a synchronous belt transmission system; an electric traction system is a permanent magnet direct current motor system or a permanent magnet alternating current synchronous motor system; a lower right driving drive gear and a lower right driven drive gear are engaged with a right rack which is fixed in the vertical direction from the back and the front of the lower portion, an upper right driving drive gear and an upper right driven drive gear are engaged with the right rack which is fixed in the vertical direction from the back and the front of the upper portion, a lower left driving drive gear and a lower left driven drive gear are engaged with a left rack which is fixed in the vertical direction from the back and the front of the lower portion, and an upper left driving drive gear and an upper left driven drive gear are engaged with the left rack which is fixed in the vertical direction from the back and the front of the upper portion, so that a lift car system of the elevator is driven to ascend or descend; a brake wheel, coaxial with a motor shaft, of the elevator is configured with a double-backup power-losing braking brake; and an electric control system is internally provided with a 'power failure star connection' unit circuit which is electrically interlocked and mechanically interlocked.

The invention relates to the technical field of injection moulding equipment, in particular to a mould change structure for an injection moulding machine. The mould change structure comprises a base and a fixed frame, wherein a slide rod is fixedly mounted above the fixed frame through a bolt; the left side of the slide rod is equipped with a slide mounting base in a sliding mode; and the right side of the slide rod is fixedly equipped with a fixed mounting base through a fixed screw knob. The mould change structure has the beneficial effects: a placing slot in a placing frame can be utilizedfor perform concentrated management on a mould, so that the problem that a conventional mould is placed disorderly and is difficult in maintenance is effectively avoided; moreover, a movable base further can be matched with a clamping arm for changing the mould on each injection moulding machine, so that conventional manual mould changing operation can be effectively replaced, better mould changeefficiency is provided, and consumption on labor power is reduced. The device can utilize a first positioning pushing rod and a second positioning pushing rod to realize quick clamping on the mould, so that complex operation of a mould changing process can be effectively reduced, and mould changing efficiency is improved.

The invention discloses a tree structure file system and a management method thereof. The file system has (K+1) binary search trees, wherein the node of each binary search tree contains a logical block address field and a size field. The management method comprises firstly inputting a memory space demand including a demanded logic block address and a demanded cluster number; computing a binary search tree with the code m according to the number of the demanded cluster; and determining whether the binary tree with the code m has unused node, if the binary tree with the code m has the unused node, searching the node nearest to the demanded logic block address in the binary search tree with the code m, and removing the node nearest to the demanded logic block address from the binary search tree with the code m.

The invention relates to a general simulation and digital signal input and output board card. The input and output board card comprises a single chip microcomputer, signal input interfaces and signal output interfaces. The single chip microcomputer internally comprises a relay control module, a digital signal input and output module, an analog signal input and output module and a protocol conversion module and supports the MODBUS protocol, the VXI11 protocol and the TCP/IP protocol. The signal input interfaces comprise the VPC interface and the MAC interface. The signal output interfaces comprise the Ethernet interface, the CAN interface, the LIN interface and a series port. The board card can be directly inserted into a test instrument, collects detection signals in a centralized mode and transmits the detection signals to a remote control end, in this way, wires, cables and connectors, used for connecting the test instrument and production equipment and the control end, on a production line are reduced substantially, so that the problems of complex wiring, difficult maintenance and mutual interference of lines in the prior art are avoided, and the noise of detection results can be reduced.

The invention discloses an LED street lamp shell. The LED street lamp shell comprises a lamp holder, a lamp cover connected to the lamp holder, a hinge part enabling the lamp holder and the lamp cover to be in hinge connection, and a clip buckling part enabling the lamp holder and the lamp cover to be in a clip buckling connection relationship, wherein through holes are arranged in the bottom of the lamp cover; an inclination angle of 10-25 degrees is formed between the bottom surface of the lamp cover and the horizontal plane; and a lamp post fixing handle is connected to the bottom of the lamp cover. The LED street lamp shell disclosed by the invention is simple in structure, the inclination angle of 10-25 degrees is formed between the bottom surface of the lamp cover and the horizontal plane, and dead insects flow out through the through holes in the bottom of the lamp cover if existing in the LED street lamp shell, thus normal heat dissipation is ensured; and when an LED street lamp needs to be overhauled, the buckling connection relationship between the lamp cover and the lamp holder is terminated through adjusting the clip buckling part, in this way, the lamp holder is capable of rotating around the hinge part for the lamp holder and the lamp cover, and a space facilitating LED street lamp overhaul personnel to overhaul can be formed between the lamp cover and the lamp holder, thus complete separation for the lamp cover and the lamp holder during the overhaul process is avoided, and the overhaul difficulty for overhead working of the LED street lamp overhaul personnel is reduced.

The invention relates to a service arrangement execution system and method, belongs to the technical field of networks, and solves the problems of complex operation, high cost and poor flexibility ofan existing micro-service arrangement execution mode. The system comprises: a registration module which is used for registering a plurality of service applications in a service resource pool; a service task definition module which is used for setting input information, output information and a failure retry strategy corresponding to each task which can be executed by the service application, and registering the input information, the output information and the failure retry strategy into the server; a service arrangement module which is used for setting tasks needing to be executed by the server and a task execution sequence according to user requirements, generating a service flow and registering the service flow into the server; a server which executes the service flow according to userrequirements; and a worker module which is used for providing an interface and a service for arranging and executing the service flow. The expandability and flexibility of micro-service arrangement are improved, the reuse rate of codes is increased, and the technical and labor costs are reduced.

The invention discloses a radiating device, an inverter and electronic equipment. The radiating device comprises a main radiator, an extension radiator and a heat conduction piece. The main radiator comprises a main substrate and main radiating teeth. One end of each main radiating tooth is connected to the main substrate; and the main radiating teeth are located at the ends, away from the main substrate, of the main radiating teeth, the extension radiator is detachably connected to the main radiator, and the heat conduction piece extends to the extension radiator from the main substrate so asto transfer heat between the main substrate and the extension radiator. The radiating device is designed to be of a split structure, the radiating capacity of the radiating device is improved throughthe dual radiating effect of the main radiator and the extension radiator, the radiating efficiency is improved, in addition, due to the fact that the extension radiator is detachably connected withthe inverter provided with the main radiator, flexible configuration is achieved, and the problem that transportation, installation and maintenance are difficult is solved.

The invention relates to the technical field of power distribution, and discloses an intelligent prefabricated cabin power distribution system. The system comprises a prefabricated cabin body, an alternating-current incoming cabinet, an alternating-current cabinet, a UPS uninterrupted power supply screen, a direct-current power supply screen, a storage battery pack and a capacity checking device,wherein an external mains supply cable is connected to the alternating-current cabinet through the alternating-current incoming cabinet to provide multiple power supply loops for an alternating-current load, part of loops in the alternating-current cabinet are respectively connected to the UPS uninterrupted power supply screen and the direct-current power supply screen so as to provide a working power supply for a UPS host and provide a working power supply for a charger set in the direct-current power supply screen, the UPS host provides an uninterrupted power supply for a load, and the charger set charges the storage battery pack and provides a direct-current power supply for the UPS together with the storage battery pack; the capacity checking device comprises a discharge monitoring unit and an active inverter capacity checking discharge unit, the discharge monitoring unit outputs a discharge capacity checking starting instruction according to a preset discharge moment under the condition that the system is not abnormal, and the active inverter capacity checking discharge unit executes capacity checking operation according to the instruction. Therefore, on-line discharge full-automatic maintenance of the storage battery is realized.

The invention discloses anti-freezing equipment used for rubber dam in a severe cold area. One electromotor of which the turning direction is controlled by a forwards and backwards rotating controller is respectively arranged on both sides of an upstream keeping a certain distance from a rubber dam, the two electromotors are connected through a river crossing wire rope, a plurality of turbulators are fixed below the steel cable and keep a certain distance from the steel cable, each turbulator comprises an ellipsoidal housing, a float bowl is respectively arranged on the upstream side and the downstream side of each ellipsoidal housing, a plurality of through holes are respectively formed in each ellipsoidal housing and face to directions of the two sides, and a vane wheel capable of rotating is arranged inside each ellipsoidal housing. Under the effects of the electromotors and the forwards and backwards rotating controllers, the turbulators on the steel wire rope can carry out repeated disturbances to the surface of a river, so as to prevent river water freezing. The anti-freezing equipment provided by the invention can prevent risks in worker operation, can run on the surface of the river, is easy for equipment maintenance and is relatively low in running cost.

The present invention provides a DC brushless motor with a decelerating machine, which is such a structure for optimally connecting the motor body, driving device, mechanical braking mechanism and decelerating machine of the DC brushless motor. The DC brushless motor 10 with a decelerating machine sequentially comprises: a driving device 12, a mechanical braking mechanism 14, and a motor body 16 on a coaxial wire L, and continuously comprises a decelerating machine 18 on the same coaxial wire L. The driving device lid 70 of the driving device 12 is also used as the lid of the mechanical braking mechanism 14.

The invention provides a case hard connection structure based on a VPX rear IO board. A rear IO board of an exchange slot position is used as an adapter plate, and a special adapter slot position forinternal interconnection is not designed, so the number of modules installed in a limited space is increased, and the problems of infirm connection stability, poor impedance continuity and difficult installation and maintenance caused by a cable interconnection mode can also be avoided; a modular design is adopted, so the mounting difficulty is reduced; a large number of network differential signals needing to be externally connected are directly led out from the rear IO board, no wiring processing is carried out on the backboard, and the quality of the provided network signals is better; thesize of the rear IO board is flexibly designed according to the size of equipment to complete internal interconnection; a standard VPX connector is used for hard connection, and high-speed signals canbe switched over; and the hard connection structure can also avoid high production and maintenance cost caused by the connection mode of the flexible printed board.

The invention belongs to the technical field of electronic devices, and discloses a backpack-free integrated display device and a production method of the device. The backpack-free integrated displaydevice includes a base, a support, a fixing assembly, a display screen and a main board power panel assembly. The fixing assembly and the main board power panel assembly are both detachably connectedwith the support, and after being assembled, the support, the fixing assembly, the display screen and the main board power panel assembly are installed on the base. Meanwhile the fixing assembly is arranged in the support, one end of the fixing assembly abuts against the inner side of the support. Moreover, the fixing assembly and the support form an accommodating space, and the display screen isarranged in the accommodating space. The fixing assembly and the main board power panel assembly are detachably connected with the support, after being assembly, the backpack-free integrated display device can be disassembled conveniently, the situation that maintenance is difficult is avoided, the maintenance period the thus shortened, and the maintenance cost is reduced.

The embodiment of the invention provides an electronic invoice issuing method and device, electronic equipment and a readable storage medium, and relates to the technical field of electronic invoices.The method comprises the following steps: configuring invoicing rules corresponding to different service categories respectively, and generating an invoicing rule list; when an invoicing request sentby a consumer is received, querying a target invoicing rule corresponding to the invoicing request in the invoicing rule list; and generating electronic invoice information according to the target invoicing rule and the invoicing request, sending the electronic invoice information to a tax invoice system, and receiving a target electronic invoice issued by the tax invoice system. According to theinvention, the target electronic invoice can be obtained based on the invoicing rule list, so that the invoicing convenience is ensured, professionals are not needed for execution, the invoicing universality is ensured, and the problem of system maintenance difficulty caused by generation of the invoicing rule in a code mode can be avoided.

The invention relates to the spray printing technology field and particularly relates to a nanometer silver line circuit spray printing system and a technology. The nanometer silver line circuit spray printing system comprises a control processing system, a nozzle, a camera, a conveyer, a shifting device, a driving device, a sintering device and a base table. The nozzle adopts a single-nozzle micro-control spray printing mode and utilizes a voice coil motor to control piston motion inside the nozzle to spray out the nanometer silver line printing ink inside the cavity. The single-nozzle micro-control spray printing mode utilizes the voice coil motor to fast and precisely control the stroke of the piston so as to accurately control the spray printing ink quantity while guaranteeing the speed. In the meantime, the dismountable single-nozzle structure is adopted, which provides convenience to maintenance of the nozzle, and avoids the maintenance difficulty of adopting the normal nozzle under the condition of the circuit spray printing where the requirement for the nozzle state is high.