487results about How to "Reduce load pressure" patented technology

The invention relates to an improved bone screw for use in orthopaedic surgery, in particular with external fracture fixation devices, of the type which comprises ahead (3), a shank (4), and a threaded portion (5) tapering towards a tip (2) at the opposite end from the head (3). Advantageously, the threaded portion (5) has at least one constant pitch section comprising threads (9) which have a triangular cusp-like profile in cross section and are separated from each other by a shaped bottom land with a concave profile (10) defined by two countersloping planes.

The invention discloses a cloud-aided intelligent warehouse management robot system and method. The system and the method support a cloud platform, apply a software definition network, realize human-machine interaction, and realize a real-time access function of a whole warehouse under the interaction, self organization and coordination of multiple robots. In the operating process, the robots assist in planning pickup paths via the cloud platform, search and analyze customer orders in a database, and acquire information of goods to be carried. The robots confirm goods by scanning RFID (Radio Frequency Identification) labels, scan surrounding information by using self cameras, upload the information to a cloud end for processing and analyzing to plan operating tracks, and accurately deliver the goods to a packing place for packing. Meanwhile, the robots can share knowledge bases, control modes and network modes and interact with each other via the cloud platform to realize group sensing intelligence, so that each robot not only can independently complete a task, but also can jointly complete various tasks by cooperation.

A variator assembly comprising a variator of the toroidal-race rolling-traction type. The assembly has input and output discs and rollers which are acted on by hydraulic roller control actuators. They are positioned between the discs to transmit torque from one disc to the other. Hydraulic end loading means supplied with fluid at an end load pressure to apply an end load to bias the discs and the rollers toward each other, thereby enabling the transmission of torque. Reaction pressure supply means are connected to the roller control actuators to cause them to apply an adjustable reaction force to the rollers. The assembly also has hydraulically influenced valve means which serve to compare an input related to the end load pressure with an input related to the reaction pressure and to control the end load pressure in dependence upon the comparison, thereby maintaining a relationship between the end load and reaction pressures. Adjustment means are provided to adjust the relationship between the end load and reaction pressures.

The invention discloses a hostile attack preventing method and a network system. The method comprises the steps that a second server receives first data sent by client sides, wherein the first data are connection request data from all the client sides; the second server obtains a filter rule, wherein the filter rule comprises a request address list and a parameter rule; the second server filters the first data through the filter rule, and the first data meeting the filter rule are sent to a first server. The network system comprises at least one client side, the first server and the second server. For illegal requests with request parameter filtering not meeting the rule, error information is directly returned at the second server, the information does not directly enter the first server for parameter legalization verification, the load pressure of the first server can be reduced, and some hostile attacks are prevented.

The invention discloses a hybrid hydraulic excavator, which comprises a control system. The control system comprises a first energy release valve block (1), a second energy release valve block (2), a first energy accumulator (4), a second energy accumulator (3), a first rotary energy recovering valve block (5), a second rotary energy recovering valve block (6), a rotary motor (7), a movable arm oil cylinder (8), a movable arm energy recovering valve block (9), a guide control valve block (10), a pump-controlled system valve block (11), a multi-way valve (12), a guide hydraulic pump (13), a first main hydraulic pump (14), a second main hydraulic pump (15), a hydraulic oil tank (16) and a hybrid controller (17). The hydraulic excavator can automatically judge and recover braking energy to a rotary system motion state at a deceleration braking energy recovering stage and simultaneously enable an engine to always work at an efficient interval.

The invention provides a data buffering device, the network memory system and the buffering method adopting the data buffering device. The buffering device includes a network interface; an EMS memory connected with the network interface and used for memorizing the data requested by computational nodes; a computational node interface protocol transformation module connected with the EMS memory, used for transforming the request of the computational nodes into the request of a peripheral equipment and then submitting the request to a processing unit and used for transmitting data together with buffering memory media; a processing unit connected with the computational node interface protocol transformation module, the network interface and the EMS memory and used for controlling the transmission of data and confirming the buffering relationship of data; buffering memory media connected with the computational node interface protocol transformation module and used for buffering data according to the buffering relationship confirmed by the processing unit. The invention can reduce the independence of the computational nodes on visiting memory nodes through the network, reduce network load and reduce the network load pressure of the whole system at a given time.

An embodiment of the present invention provides a message processing method and device, and an electronic device. A plurality of timing queues are provided, and the plurality of timing queues correspond to a plurality of preset delay levels respectively. The message processing method includes: receiving a timing message, and writing the timing message into a data file; storing index information ofthe timing message in the corresponding timing queue according to the delay level of the timing message; separately monitoring the plurality of timing queues to determine whether there is a timing message that satisfies a preset delivery condition; delivering the index information of the timing message that satisfies the preset delivery condition to a target queue if there is a timing message that satisfies the preset delivery condition so as to allow the user to acquire the timing message that satisfies the preset delivery condition through the index information. The invention improves the timing message stacking capability, and when the number of timing messages is large, the timing message delay errors can be reduced, and the timing messages are guaranteed to be delivered on time to agreater extent.

Recovery of an Internet Protocol (IP) address allocated to a client using Dynamic Host Configuration Protocol (DHCP) is provided. Media Access Control (MAC) address and the IP address of the client are stored. When the client is determined as being offline, MAC address and IP address of the client are determined and a DHCP release message carrying the IP address of the client is sent to an address allocation server. The client is determined as being offline based on a shutdown status of a port to which the client is connected. The port may be on the relay device, or an access device that connects the client and the relay device.

The invention discloses an asynchronous caching method, server and system, and relates to the technical field of caching. According to the technical scheme provided by the invention, data requested by a user are read from the asynchronous caching server and a source server, and are returned to the user, asynchronous caching data is formed by setting logic expiration time for source data while a response to a user request is completed, and the asynchronous caching data are stored into the asynchronous caching server, so that the update of the asynchronous caching server is realized; and meanwhile, whether the asynchronous caching data expire or not is judged by taking the logic expiration time as a reference, the source data are read after the asynchronous caching data expire, and the update is performed again in the asynchronous caching server. Through the two-time update of the asynchronous caching data, it can be ensured that 80%-90% of user requests only need to access to the asynchronous caching server and do not need to read the source server. With the adoption of the technical scheme provided by embodiments of the invention, the availability and stability of a system can be remarkably improved.

The invention discloses a multicenter data task processing method, a multicenter data task processing device and a multicenter data task processing system. The processing method comprises the steps: A, collecting data task information; B, generating a data task model graph according to the data task information, cutting the data task model graph, namely grouping all nodes in the data task model graph, wherein each node of the data task model graph is one data task; and C, allocating data tasks of different groups into corresponding data centers. By means of the multicenter data task processing method, the device and the system, through the establishment of a model reflecting the correlations among data tasks, multicenter task allocation is performed based on the model, and thus the task allocation is visual, accurate and balanced. Transfer and redundancy of large amount of data are avoided, data volume transmitted among each center is small, therefore pressure of network load is reduced, overall data processing efficiency is improved, and loads in all the data centers are basically the same.

The invention relates to a network connecting method of a mobile communication device terminal, in particular a network automatic switching method for the mobile communication device terminal. The method comprises the following steps of: (11) executing a step (12) while detecting that a base station to which the current mobile communication device terminal is accessed is changed from a non-first base station to a first base station; (12) judging whether a historical available WLAN (Wireless Local Area Network) exists under a base station vector ID of the first base station, and if so, executing a step (13), and otherwise, executing the step (11); and (13) switching the mobile communication device terminal to the historical available WLAN. The invention is applicable to the mobile communication device terminals like mobile phones, handheld networking devices and ubs (Universal Serial Bus) networking cards, can save GPRS (General Packet Radio Service) dial-up networking cost and reduce a load pressure of a mobile base station because the terminals automatically select the WLAN for access.

The invention provides a control system and a control method for photovoltaic auxiliary grid-connected power generation. The system comprises a direct current voltage boosting module, a direct current limited power voltage transformation module, a grid-connected inverter, a direct current compensation module, an alternating current inverse module, an alternating current switching module, a monitoring module and a control module. The method comprises the following steps that a photovoltaic module is opened to perform power generation; whether a public supply network loses power is judged, if the public supply network loses power, the photovoltaic module is used for independently supplying power to a user load; if the public supply network does not lose power, and the generated energy of the photovoltaic module is larger than that of the user load, the photovoltaic module is used for independently supplying power to the user load, at the same time, surplus electric energy is input into the public supply network in a grid-connected way; and if the generated energy of the photovoltaic module is smaller than that of the user load, the public supply network performs direct current compensation to electric energy output by the photovoltaic module. By adopting the control system and the method, the energy use efficiency is high during photovoltaic power generation, and the system is stably operated.

The invention relates to a direct-broadcast flow transmission method and apparatus. The method comprises: a current state of a client is obtained; on the basis of the obtained current state of the client, statistics of a ratio of the number of clients in a freezing state to the total number of clients is carried out; when the ratio exceeds a first threshold value, a current code rate of a direct-broadcast flow is obtained; and when the current code rate is higher than a predetermined code rate threshold value, the client is notified to adjust a transmission strategy to improving the transmission capability and enhance a proportion of direct-broadcast flow data obtained by the client from a content distribution network (CDN) server to direct-broadcast flow data obtained by a point-to-point (P2P) data transmission mode. According to embodiments of the invention, the transmission strategy of the client is adjusted based on the direct-broadcast flow code rate and the client state, so that the service and bandwidth resources are saved and the direct broadcasting smoothness is guaranteed.

The invention provides a distribution thought based message service middleware system used for distribution and forward services of various messages and aiming to lower pressure of a server for receiving message request tasks and improve efficiency of processing different request tasks of multiple requesters on the basis of application services. The system comprises a message service subscription module (1), a message service distribution module (2) and a message service release module (3). By the system, the problem that subscribers frequently find addresses of different service providers and even cannot find out the addresses of the service provides can be solved; number of times that the server receives the request tasks can be reduced effectively, probability of repeated data release is lowered, and data release efficiency is improved effectively; the problem about the bottleneck of massive request task processing of the server is solved.

The invention provides a boiler coal combustion-improving desulfurizing agent composition. The composition comprises the following components in parts by weight: 3-9 parts of sodium carbonate, 1-2 parts of sodium acetate, 3-9 parts of calcium carbonate, 4-9 parts of aluminium hydroxide, 2-5 parts of ferric trichloride, 3-10 parts of ferric oxide, 8-22 parts of potassium permanganate, 8-22 parts of potassium chlorate, 15-40 parts of activated attapulgite clay, 7-13 parts of manganese oxide, 4-8 parts of copper oxide, 4-8 parts of alumina, 3-8 parts of copper carbonate, 3-10 parts of zinc oxide, 3-10 parts of zinc nitrate, 4-11 parts of sodium dichromate, 0.5-1.5 parts of barium molybdate, 0.5-1.5 parts of vanadium pentoxide, 0.2-0.5 part of cerium oxide and 1-3 parts of dispersing agent JFC. The composition is an additive suitable for coal-fired boilers in the petroleum, chemical, power, thermoelectricity and metallurgy industries, can absorb and solidify sulfur dioxide generated in the combustion process, adsorbs dust and other harmful substances in quantity and simultaneously removes smoke dust scales and jelly adhering to the inner walls of combustors, thus inhibiting the concentration of flue gas emission.

The invention discloses a data updating method, a distributing node and a mass storage cluster system. The distributing node comprises an order control module and a distributing module, wherein the order control module is used for receiving an updated order sent by a thread receiving and managing device; and the distributing module is used for reading the updated order from the order control module via a plurality of reading threads, and respectively distributes data to the corresponding data nodes according to the updated order. The data updating method, the distributing node and the mass storage cluster system are characterized in that only one updating thread is required to receive the updated order, thereby avoiding the lock problem that multiple threads are simultaneously updated in the prior art, and improving the integral processing efficiency of the system. Meanwhile, a plurality of reading threads read the updated orders, data are distributed to a plurality of updated orders simultaneously, and the data distributing efficiency is improved.