2704results about How to "Easy to maintain later" patented technology

The invention discloses a super-power five-cylinder plunger pump. The super-power five-cylinder plunger pump comprises a power end assembly, a fluid-power end assembly and a reduction box assembly; the power end assembly adopting a sectional type structure design includes a crankshaft box body, a crosshead box body and a space-stop rack, one end of the crosshead box body is connected with the crankshaft box body, and the other end of the crosshead box body is connected with the space-stop rack; the fluid-power end assembly is arranged at one end of the space-stop rack, and the fluid-power endassembly passes through the space-stop rack and the crosshead box body in sequence and is connected with the crankshaft box body through bolts; and the reduction box assembly is connected with the crankshaft box body, a crankshaft in the crankshaft box body is forging alloy steel, the crankshaft includes six shaft necks and five crank threw, each crank throw is arranged between two adjacent shaftnecks, and the distance between the crank threw and the rotating center of the crankshaft is 110mm to 160 mm. The super-power five-cylinder plunger pump has the beneficial effects that the rated inputpower of the super-power five-cylinder plunger pump is 5000 hp, so that the problem that high-power motors cannot be matched with the plunger pumps of corresponding specifications in electric drive fracturing is solved, and the contradictions that the conditions in oil and gas well fields are limited and the matching of fracturing equipment is much is further solved at the same time.

The invention relates to a high-tension transmission line monitoring method on the basis of wireless communication and photo-communication for overcoming the faults of limited functions, small band width, high running cost and low reliability in the prior art. The method comprises the following steps: 1. setting wireless monitoring nodes on the transmission line towers; selecting a particular tower along the line at an interval of 20-30 kilometers as a convergent point tower and simultaneously installing wireless monitoring nodes and photo-communication nodes on the convergent point tower and transforming plants on the two ends of the line; 2. the wireless monitoring nodes acquiring monitoring data, the wireless monitoring nodes of the towers in the area where the convergent point tower locates transmit the monitoring data to the photo-communication nodes on the convergent point tower by using a multi-hop forwarding method, each photo-communication node transmits the monitoring data to a monitoring center by using a multi-hop forwarding method. According to the invention, information monitored by thousands of sensors installed on towers of each level can be transmitted back to a junction centre for realizing the real-time monitoring of the whole high-tension transmission line.

The invention provides an automotive anti-collision radar system with two receiving antennas and an operating method. The automotive anti-collision radar system is provided with the two independent receiving antennas and an independent transmitting antenna, wherein the two independent receiving antennas and the independent transmitting antenna are connected into a radio-frequency signal processing module respectively. A central control processing part comprises a PS module and a PL module, wherein the PS module comprises a system submodule, a data processing submodule and a clock submodule, and the PL module comprises a modulating signal generation submodule, an algorithm submodule, a phase-locked loop submodule and a control submodule. An output device comprises a displayer, an alarm device and an emergency braking device. The operating method includes the steps of transmitting modulation triangular waves, allowing the two receiving antennas to collect real echo signals and virtual echo signals respectively, calculating distance information, speed information and azimuth information of targets through a MUSIC algorithm and target pairing, transmitting results to the PS module for synchronous display and directly controlling the alarm device and the braking device. Through the automotive anti-collision radar system with the two receiving antennas and the operating method, target azimuth can be obtained, the multi-target judging ability is improved, the computing speed is high, cost is low, reliability is high, and the automotive anti-collision radar system is simplified in structure, convenient to maintain, easy to upgrade and capable of reducing cost.

The invention discloses an intelligent software interface dynamic generation method facing a network, which comprises the following steps: standardization and development of display services of an interface; description of display demands of the interface; standardization and development of application background treatment services; and dynamic generation of the display interface. When the display interface needs to be adjusted, codes do not need to be modified, nor does a display software need to be recompiled, and a new display interface can be dynamically generated by re-defining the new interface description; when in the normal display process, the display services of the interface which are in line with the method can be automatically dynamically downloaded from various service nodeson the network according to the new demands of the interface display of a user, the new interface can be rapidly integrated by intelligent automatic splicing and combination without simultaneously starting a plurality of browser windows; when in the browsing process, the dynamic adjustment of the display interface can be supported according to the requirements of the user on the display style without writing codes and recompiling; and the method can simultaneously reduce the workload of a developer, improve the development efficiency and simplify the later maintenance.

The invention discloses a thunder-lightening induced solid-phase arc-extinguishing lightning arrester. The thunder-lightening induced solid-phase arc-extinguishing lightning arrester mainly consists of a lightning arrester shell, an arc-extinguishing rotary table, an electric conduction metal plate, a starting rod, a clamping rod, an induction coil, an arc-extinguishing barrel and a counting pointer; the arc-extinguishing rotary table is arranged inside the lightning arrester shell, and a flat spiral spring for pushing the arc-extinguishing rotary table to rotate is arranged at the central position of the arc-extinguishing rotary table; the electric conduction metal plate is arranged at the upper part of the arc-extinguishing rotary table; the arc-extinguishing rotary table is provided with a plurality of arc-extinguishing gas pills in the peripheral direction; one side of each arc-extinguishing gas pill is provided with a trigger electrode and a groove respectively, one end of each trigger electrode is connected with one of trigger ends of the corresponding arc-extinguishing gas pill through a lead, and the other ends of the trigger electrodes extend out of the edge of the arc-extinguishing rotary table; and the other of the trigger ends of the corresponding arc-extinguishing gas pill is connected with the electric conduction metal plate through a lead. The thunder-lightening induced solid-phase arc-extinguishing lightning arrester is simple in structure, reasonable in design, high in arc-extinguishing ability and stable and reliable to work, and the arc-extinguishing gas pills are changed quickly and conveniently.

The invention discloses a distributed container cluster mirror image management master node, slave nodes, a system and a method, wherein the main node comprises a mirror image database which is a distributed database and is used for storing node information of all nodes in the system; the request input module is used for receiving request content including a request target and command execution content; mirror image management module, the verification module is used for communicating the password and verifying whether the request content acquired by the request record input module is legal; ifit is judged that a request target in the request content is a specified single slave node or grouped slave nodes, sending a communication password and command execution content including a pulling operation, an updating operation, a deleting operation and a cleaning operation to IP addresses corresponding to the slave nodes; and receiving the state feedback content sent by the slave node. According to the invention, the flattening management of the container cluster mirror image is realized, the management efficiency of the cluster container mirror image in a distributed system is improved,and the high reliability and safety of the whole cluster are improved.

The invention discloses a photovoltaic power generation device with a global maximum power output function, which comprises a photovoltaic cell array and a main converter, wherein the photovoltaic cell array comprises a plurality of series photovoltaic cells. The photovoltaic power generation device also comprises a power adjustment array and an auxiliary converter, wherein an input end of the auxiliary converter is connected with a direct current bus of the photovoltaic cell array, and the power adjustment array comprises power adjustment units corresponding to the photovoltaic cells one by one; and the power adjustment units are connected with the corresponding photovoltaic cells in parallel, and input ends of the power adjustment units are connected with an output end of the auxiliary converter. The photovoltaic power generation device has the advantages that the structure is simple, the cost is low, and the reduced output current under partial shade conditions can be automatically compensated to realize the maximum power output of a single photovoltaic cell.

The invention discloses an intelligent integrated online monitoring system and method for underground cable operation. The online monitoring system comprises a monitoring center as well as a cable anti-stealing detection unit, a cable video monitoring unit, a cable joint temperature monitoring unit, a cable metal sheath grounding current monitoring unit, an environment gas monitoring unit, a cable tunnel water level monitoring unit and a cable tunnel smoke monitoring unit which are connected with the monitoring center respectively. According to the system and the method, various sensors and mutual inductors are adopted to monitor cables and cable environments, the monitoring center masters the operation conditions of the cables in real time and gives an alarm when a normal condition happens, a worker is reminded to clear a fault in time, and large potential safety hazard is avoided; with the adoption of anti-stealing monitoring, the possibility of stealing of the cables is eliminated, in combination of video monitoring, the missing report caused by visual fatigue is prevented, one all-weather dead-zone-free monitoring platform is established, so that visual monitoring of important positions in cable tunnels is realized, manual inspection is replaced, the labor cost is reduced, the time is saved, further, videos can be stored and taken, and later maintenance is facilitated.

The invention discloses a three-dimensional vision accurate guiding and positioning method for automobile intelligent manufacturing automatic feeding. A camera is used for conducting photographing and image collecting on a component, and the position and the angle deviation of the component under a fixed coordinate system are calculated through image processing and in combination with the vision detection algorithm; and a robot is used for transmitting the position and angle information, the track of the robot is corrected, the robot is guided to arrive at the correct work position, and accordingly the robot automatically corrects the track for workpiece grabbing and feeding. According to the three-dimensional vision accurate guiding and positioning method, the component grabbing precision is high, the precision can reach +/-0.5 mm, accurate positioning on a material box is not needed, and the cost and maintaining expense for accurately positioning the material box are omitted; and the later maintaining and adjusting technology is facilitated.

The invention discloses a prestressed ultrahigh-performance concrete continuous box girder bridge which comprises piers and an ultra-high performance concrete box girder. The box girder has a wholly or partially external prestressed system in the longitudinal direction of the box girder bridge and mainly comprises a top plate, a bottom plate, a web plate and a diaphragm plate, wherein at least one of the top plate, the bottom plate, the web plate and the diaphragm plate is a sheet. The construction method of the prestressed ultrahigh-performance concrete continuous box girder bridge is a segmental prefabricating and suspended-splicing method and mainly comprises the following steps: constructing pile foundations and the piers, mounting blocks No.0 on the piers, splicing all sections of the box girder symmetrically on two sides of the blocks No.0 in a suspending way, erecting side spans by using a support erecting method, carrying out side span closure, carrying out midspan closure, and stretching prestressed steel strands in all construction stages to finish construction. The prestressed ultra-high performance concrete continuous box girder bridge has the advantages of simple structure and light dead weight, the crack risk of the box girder is reduced, and the method is suitable for constructing a long-span bridge.

The invention provides a multicast realization method for an LPWAN (Long Range Wide Area Network) Internet of things. The problems of multicast group management, multicast address and session key allocation and multicast route maintenance are solved. The method comprises LoRa terminals, a pluarity of LoRa base stations, a network server and a multicast application. The LoRa terminals are used forreceiving multicast information. The LoRa base stations are used for transmitting multicast frames to all LoRa terminals in the coverage range of the base stations. The network server is used for allocating multicast addresses and maintaining multicast group routes. The multicast application is used for establishing and maintaining a plurality of multicast groups. The method has the beneficial effects that through adoption of the method provided by the invention, multicast functions of LoRaWAN ClassB and ClassC terminals are realized, and the difficulty that batch terminals issue commands at the same time is solved.

The invention discloses a resource device address obtaining method and device. The method is applied to gateway devices in a network. The network comprises a resource device, a management platform VM and multiple gateway devices. An address request message generated by the management platform VM according to a resource device IP address is received; whether an IP address in the address request message belongs to a network segment in which the resource device is located or not is judged according to an address request identifier in the address request message; an address response message is generated according to an MAC address corresponding to the IP address and a target network segment in which the resource device is located when the IP address in the address request message belongs to the network segment in which the resource device is located, and the address response message is sent to the VM, so when the VM and the resource device are located in different network segments, the VM still can obtain the network address information of the resource device accurately, processes such as initial access and post-maintenance of the resource device become more simple and convenient.

The invention discloses a liquid hydrostatic bearing capable of realizing oil distribution from an end surface. The liquid hydrostatic bearing comprises a bearing body, a plurality of bearing oil cavities, a matched oil inlet pipeline system and oil return pipeline system, wherein the oil inlet pipeline system comprises an oil inlet, a main oil inlet channel with one end connected with the oil inlet and the other end connected with one bearing oil cavity, subsidiary oil inlet channels arranged corresponding to the rest of the bearing oil cavities and communicated with each other, and oil transportation channels. The number of the oil transportation channels corresponds to that of the oil inlet channels. The oil transportation channels are arranged along the axial direction of the hydrostatic bearing; one end of each oil transportation channel is communicated with each oil inlet channel; and the other end of each oil transportation channel is communicated with circular grooves disposed on the inner surface of an end cap arranged at one end of the bearing. The oil distribution from the end surface can be realized through a single hydraulic pump. The liquid hydrostatic bearing is convenient for guaranteeing consistence of pressure in each bearing oil cavity, has compact whole structure and good processing performance, and is suitable for various high-precision bearing works.

The invention aims to provide an automobile wiring harness protective sleeve convenient for vehicle door wiring harness installation and later period maintenance. The automobile wiring harness protective sleeve comprises a hollow tubular main body (1), tubular fixed parts (2) and (3) are arranged at both ends of the main body (1), an annular groove (21) is arranged on the outer surface of the tubular body of the fixed part (2), and an annular groove (31) is arranged on the inner surface of the tubular body of the fixed part (3). The automobile wiring harness protective sleeve enables the butted point between the vehicle door wiring harness and the main wiring harness in the vehicle body to be transferred to the sheet metal hole from the inside of the vehicle body, thereby greatly simplifying the assembly procedures and facilitating the modular assembly of the vehicle door and the later period maintenance, and the automobile wiring harness protective sleeve has simple structure and low cost and is suitable for being widely popularized.

The invention relates to a spray printing method for color patterns on workpieces. The spray printing method includes the following steps that the workpieces are placed on a conveying carrier, and theconveying carrier drives the workpieces to move according to the set track; position information of the workpieces on the conveying carrier and the patterns on the surfaces of the workpieces are collected through a camera, and printing parameters corresponding to the workpieces are obtained with the combination of the position information of the workpieces and the set printing patterns; and an ink jet printing module conducts spray printing and curing operation on the workpieces in sequence according to the printing parameters, and finally the patterns which are completely the same are formedon the workpieces. The spray printing method has the beneficial effects that the workpieces do not need to be rotated, a special clamp body does not need to be used for achieving accurate positioning, the yield is greatly increased, and any spray printing pattern can be designed according to needs; in addition, coating can be conducted more accurately according to the shapes of the patterns whena bottom layer is coated, metering can also be better controlled to avoid waste, and the rejection rate is reduced; and the overall process is compact, and efficient spray printing is achieved due tothe assembly line design.

The invention provides an access control method and system for an enterprise Intranet, relating to the technical field of a computer. The method comprises the following steps of intercepting an own webpage request by a terminal browser aiming at terminals monitored by a console in the enterprise Intranet; sending website information corresponding to the page request to the console; identifying whether the website information is allowed to be accessed or not by the console according to a website information library; determining to stop the interception of webpage request according to the identification result to the website information returned by the console; and allowing the webpage request to access corresponding website, or determining to cancel the webpage request. According to the method and the system provided by the invention, corresponding software system can be installed on the basis of the original system of a closed network, namely, the limit of page access can be realized; hardware equipment such as any hardware firewall is not required to be bought, thus, the hardware cost is saved; and as the hardware facility is reduced, the post maintenance is convenient, and the maintenance cost is reduced.

The embodiment of the invention provides a transit network data processing method based on big data and a server cluster. The server cluster acquires service data of track lines in a rail transit network from a data acquisition layer, then processes and stores the acquired service data and finally controls the traffic operation state of the track lines in the rail transit network according to the processed service data. According to the method, a big data platform is deployed by building the server cluster and replaces an existing data warehouse platform to conduct data processing and storage for a network (emergency) command center; as the server cluster is more universal and more convenient to build and maintain, first-time deployment and later-stage maintenance of a system are convenient. Besides, linear horizontal expansion of the storage capacity of the server cluster can be achieved, the processing performance can be improved at the same time, it is only needed to add machines into the cluster, halt is not needed in the expansion process, and the demand for capacity expansion convenience is effectively met.

The invention discloses a water-breaking energy-dissipation permeable box type single floating body capable of being assembled, which comprises a hexahedral casing with open front and rear ends; two middle flat plates, which are isolated from each other and connected with the left and right wall plates of the casing, are horizontally arranged in the casing; four inclined plates, which are inclined towards the interior of the casing and connected with edges of the upper and lower wall plates of the casing and edges of the middle flat plates, are arranged at the front and the rear parts of the casing in positions between the upper and lower wall plates of the casing and the middle flat plates respectively; included angles Alpha are formed between the inclined plates and the upper and lower wall plates of the casing; aerofoil-like water diversion structures are arranged between the two middle flat plates in positions close to the front and rear edges of the casing respectively; the end sections of the aerofoil-like water diversion structures are triangular; the two ends of each aerofoil-like water diversion structure are respectively connected with the left and right wall plates of the casing; two floating boxes are respectively clung to and connected with the outer sides of the left and right wall plates of the casing; and a plurality of through holes are uniformly formed in the upper and lower wall plates of the casing, the middle flat plates and the inclined plates. Such assembled water-breaking energy-dissipation permeable box type single floating bodies provided by the utility model can be assembled into a floating breakwater, have favorable water-breaking energy-dissipation effects and good stability and are easy to manufacture and low in cost.

The invention discloses a full-automatic carton stacking production line which comprises a stacking machine (1), a carton pushing machine (2), a tray room (3), a carbon feeding roller way (4), a stack conveying mechanism (5) and a finished product stack conveying device (6), wherein the stacking machine (1) consists of a lifting mechanism I (7) and curtain drawing mechanisms (8); the stack conveying mechanism (5) is arranged below an auxiliary rack (10); the carton pushing machine (2) is arranged on the rear side of the stacking machine (1); the tray room (3) is arranged on the right side of the stack conveying mechanism (5); the carton feeding roller way (4) is arranged on the rear side of the tray room (3); the finished product stack conveying device (6) is arranged on the left side of the stack conveying mechanism (5). The full-automatic carton stacking production line has the beneficial effects of low manufacturing cost, high carton stacking efficiency, low maintenance cost and high stacking quality, and guarantees the carton stacking tidiness.