Rainshed for vehicle

The application discloses rainshed for vehicle, including the ceiling, formed at the side shield of the ceiling left and right sides and respectively formed at the preceding baffle and the backplate of both sides around the ceiling, the side shield is concave establish formed at the ceiling both sides, respectively with the junction of ceiling, preceding baffle and backplate is formed with step portion. This neotype rainshed for vehicle intensity height, non -deformable, prevent ponding.

Tunnel secondary lining thickness control method

A tunnel secondary lining thickness clamping and controlling method comprises the steps that small holes are punched in a measuring line of a formwork, workers are used for measuring each small hole, whether the distance is qualified or not is recorded, it is ensured that before secondary lining concrete pouring is conducted, the pouring space thickness of secondary lining is measured, it is ensured that the secondary lining thickness meets the red line requirement, and the secondary lining thickness is accurately measured. Therefore, the defect is prevented from being left to be reworked after construction is completed, economic loss caused by later reworking is avoided, and meanwhile construction period delay caused by reworking can be avoided.

Process machine tool for large-stroke process combined machining

The invention is suitable for the technical field of machine tools, and provides a process machine tool for large-stroke process combined machining. The horizontal process combined machining unit is a driving motor mounting size reference machining unit of the crawler beam and is used for combined machining of important processes such as boring, surface milling, drilling and tapping of a workpiece; the vertical process combined machining unit is a crawler belt installation and guide size reference machining unit of the crawler belt beam and is used for combined machining of important processes such as face milling, drilling, hole expanding and reaming and tapping of a workpiece. The vertical double-spindle movement unit and the horizontal double-spindle movement unit are arranged on the two sides of the workpiece, the safety performance can be improved, meanwhile, the occupied area is reduced, the moving distance of operators is reduced, the top face and the side face can be machined at ...

Engineering vehicle head

The invention discloses an engineering vehicle head. The engineering vehicle head comprises a vehicle head underframe, a wing plate is arranged on the outer side edge of the vehicle head underframe and arranged vertically, two stepped opening are formed in the outer side face of the wing plate, and a supporting rod is arranged between the inner side face of the wing plate and the bottom of the vehicle head underframe. A rib plate and the supporting rod are arranged between the wing plate and the vehicle head underframe, so that the strength of a whole stepping support is greatly improved, and the service life is longer.

Order picking method and system

The invention discloses an order picking method and system. The method includes the steps that firstly, an order is selected, order parameters and commodity parameters are acquired, and sorting site parameters of each sorting site in a warehouse and lot maximum power parameters are determined; secondly, the number of lots is calculated; thirdly, the coordinates of all commodities in the order are calculated in each sorting site coordinate system; fourthly, all lot orders are acquired in the sorting site coordinate system; fifthly, the sum of distances between all lot order commodities in each lot order and the original point of the sorting site coordinate system is calculated; sixthly, the minimum value of the calculated sum of distances and the corresponding lot order are acquired; seventhly, the original point of the sorting site coordinate system is regarded as a starting point, and the connecting lines of the original point and all the lot order commodities in the lot order are regarded ...

BIDIRECTIONAL EXTENSION FORMING METHOD FOR PLASTIC FILM

Mimicry tampering resisting method for centralized file service system

The invention belongs to the computer science and technology field and particularly relates to a mimicry tampering resisting method for a centralized file service system. The mimicry tampering resisting method is applied to small and medium file service systems. The key of the small and medium file service systems is a single file server or a file server cluster. According to the mimicry tampering resisting method, multiple file server variants replace a single file server, and an arbiter is introduced; a file writing request of a client is submitted to multiple file servers at the same time, each file server independently processes the file writing request, and then multiple independent file copies are generated; the arbiter conducts arbitrament on each file copy, the copy with pool safety is deleted, and the copy with the highest safety is maintained. By the adoption of the mimicry tampering resisting method, the abnormal action of each file server can be found, tampering of a file by ...

Processor structure and instruction system representation method based on multi-dimensional variable description table

The invention relates to the field of reverse analysis of computer softwares, in particular to a processor structure and an instruction system representation method based on a multi-dimensional variable description table. The method adopts a multi-layer triple nested table (Table) to construct a structural characteristic library and an instruction system description template of processors, the Table is represented as [, , ..., ], each triple represents one processor, Tpn performs the classification, indexing and screening on the processors, Tsn provides register structure information, interruption structure information, reset address information and storage space distribution information, Tin provides a machine code, an assemblyexpression and the mapping relation between the machine code and the assembly expression, data in the Table is extracted from an information database of the processors, and the information database ofthe ...

Manufacturing process of automotive chassis longitudinal beam

The invention discloses a manufacturing process of an automotive chassis longitudinal beam with high production efficiency, low material consumption and good quality of finished products. The manufacturing process comprises the following steps of: (1) blanking according the sizes; (2) punching all mounting holes and fabrication holes for the bending location and the forming location; (3) bending by utilizing a bending mould with a locating pin matched with the fabrication hole for the bending location; (4) forming by utilizing a forming mould with a locating pin matched with the fabrication hole for the forming location; and (5) polishing. The invention provides the manufacturing process of the automotive chassis longitudinal beam with high production efficiency, low material consumption and good quality of finished products. In the invention, because all mounting holes and the fabrication holes for the bending location and/or the forming location are directly punched by a numerically controlled ...

Metering method used for digital electric energy of intelligent substation

The invention discloses a metering method used for digital electric energy of an intelligent substation. The metering method comprises the following steps of: 1) performing packet loss compensation and rough data removal on digital signals of voltage and current sent by a combination unit in the intelligent substation in sequence; 2) obtaining a transient power based on the processed voltage and current signals, capturing n continuous point in the obtained transient power, multiplying the n continuous points with a Blankman convolution window function coefficient, and then performing low-pass filtration on the n continuous points to obtain a mean power; 3) obtaining the digital electric energy of the intelligent substation according to time integration and based on the obtained mean power, and performing P/F transformation on the mean power to form an electric energy pulse and outputting the electric energy pulse to obtain a metering value of the digital electric energy of the intelligent ...

Instruction set type identification method based on programmed grammar

The invention relates to an instruction set type identification method based on a programmed grammar. The instruction set type identification method comprises the following steps:1: instruction coding and sign language features of various processors are studied; lexical characteristics, syntactical characteristics and segment characteristics of the program are extracted, so as to constitute a feature vector space; step 2: the lexical characteristics, syntactic characteristics and segment characteristics are acquired; step 3:programmed grammar feature vector of a target equipment code is generated according to the results in the step 2: a multi-attribute decision matrix is built by adopting the vector quantity normalization method; a weight allocation method based on comentropy is adopted to generate weighted multiple attribute decision matrix; step 4: the AHP arithmetic is adopted to calculate the similarity of the lexical characteristics; an improved assemble-level similarity evaluation ...

Flexible management method for reconfigurable components in high-efficiency computer

The invention relates to a flexible management method for reconfigurable components in a high-efficiency computer, which is applied to a high-efficiency computer system. The system is generally provided with a plurality of nodes which are connected together through an interconnecting network; a general CPU, the reconfigurable components and a memory in each node are connected together through the interconnecting network; an operating system kernel of the general CPU is provided with drivers; a virtual layer of a reconfigurable component manager is designed in the operating system kernel and above the drivers; and the reconfigurable component manager takes charge of establishing connection between a reconfigurable device of a process and the physical reconfigurable components, configuring, distributing, releasing and reclaiming each reconfigurable component in or out of the nodes, loading the physical drivers of the reconfigurable device, and delivering the operating request of the upper ...

Data conversion method based on compression and scrambling

The invention discloses a data conversion method based on compression and scrambling, and provides the conversion method capable of achieving data compression and protecting data safety. The method comprises a data conversion process and a data recovery process. The data conversion process is as follow, original data D and a bit length L of the original data D are known, the original data D are compressed by using a data compression algorithm F, compressed data DF are obtained, and the length is LF bits (LF<=L); a scrambling position X and a scrambling length LX are randomly selected from the DF, data scrambling G is applied to a data bit, starting from X and having a length of LX, in the DF by using the data scrambling G, and scrambled data DFG are obtained. The data recovery process is as follow, data descrambling G' is applied to a data bit, starting from X and having a length of LX, in the scrambled data DFG, and compressed data DF are obtained; the DF is decompressed by using decompression ...

Error test system and method for digitized metering device

The invention provides an error test system and method for a digitized metering device. The error test system and method can meet requirements for whole error test and dissemination of the value of quantity of the digitized metering device in a semi-breaker wiring mode, and can simultaneously test and compare the whole error and the sum of a single error of an electronic transformer and a single error of a digitized electric energy meter by changing characteristic error influence quantity of the digitized metering device. The test system comprises the digitized metering device, a traditional standard current transformer, a three-phase electronic transformer calibrator, a three-phase standard digitized electric energy meter, a traditional three-phase standard electric energy meter and a three-phase test power supply used for outputting an electric load; the test method based on the test system compares and analyzes the whole error and the sum of single errors of dissemination of the value ...

Mimic steal-preventing method of DFS (Distributed File System)

The invention discloses a mimic steal-preventing method of a DFS (Distributed File System). The file data and management information in a file system are distributed, converted and customized so that a metadata server only manages the directory structure of the system but not know the meanings of a name, a data node only manages file fragments but not know the meanings of the contents, and a position server only manages a mapping relationship between the logic positions and the physical positions of the file fragments but cannot visit the file; the metadata server, the position server and the data node are used for customizing the name space, storage space and position space of the exclusive file system, so that each client can only see a directory structure and storage equipment customized for the system, and can only visit the file. Even if single part in the DFS is hijacked, a hijacker can only obtain parts of information of the system and cannot grasp complete pictures, therefore the ...

Mimicry tamper-proof method of distributed file system

The invention discloses a mimicry tamper-proof method of a distributed file system and accordingly the problem that files are tampered with in the distributed file system in the prior art is solved. The mimicry tamper-proof method comprises the following steps of step 1, creating a plurality of copies for every file object to be written in different types of data nodes respectively and step 2, adding an arbitrator to evaluate every copy, selecting reserved copies according to different purposes respectively and deleting the other copies. According to the mimicry tamper-proof method of the distributed file system, a hijacker can only obtain file objects in a certain data node even if the data node is hijacked; every file object is only a fragment of an actual file and accordingly the hijacker is difficult to determine a file to which the object belongs and the position of the object in the file and accordingly the hijacker is difficult to accurately tamper with the file; the modification ...

System and method for quick recognizing fault current in power system

Disclosed is a system and method for quick recognizing fault current in a power system. The system for quick recognizing fault current in the power system includes a power supply connected to a load via a switch. A current sensor is arranged on an incoming line of the load. The current sensor transfers a detected current signal, which is subjected to pre-treatment of a signal regulating circuit, to a signal processing device for numerical value sampling. A peak value of a current periodic component is obtained through a sampled numerical value. The signal processing device compares the peak value with a pre-set value, and controls the switch according to the comparative result. The method comprises: continuously performing sampling of an input current signal in an equal time interval through the signal processing device to obtain a current discrete value sequence; selecting a plurality of sampled values in fixed time interval from the sequence; performing mathematical calculation of difference ...

Insert mould

The invention discloses an insert mould. The insert mould comprises a vehicle frame mould body, wherein the vehicle frame mould body comprises a vehicle head mould, a vehicle body mould and a vehicle tail mould, wherein the vehicle body mould consists of a plurality of vehicle body sub-moulds; the vehicle body sub-moulds are cooperatively connected in an inlaying manner; the vehicle head mould and the vehicle tail mould are curved support moulds, the vehicle body sub-moulds are straight support moulds. The conventional integrated vehicle frame mould is changed into the vehicle body mould, which adopts a split inlaid structure, and the length of the mould can be changed timely according to different lengths of vehicle frames required to be manufactured, so that the insert mould is wider in application range and more flexible to use.

Large-stroke vertical full-moving-column reverse automatic tool changing machining center machining mechanism

The invention relates to the technical field of metal material machining, in particular to a large-stroke vertical full-moving-column reverse automatic tool changing machining center machining mechanism which comprises a bottom plate, a control mainboard is fixedly installed on the left side of the upper end of the bottom plate, a first motor is arranged on the right side of the control mainboard, and a first connecting piece is arranged on the right side of the first motor. A second connecting piece is arranged on the front side of the first connecting piece, the first connecting piece, the second connecting piece and the first motor are all fixedly connected with the bottom plate, and a machining plate is arranged on the upper side of the bottom plate. By arranging clamping plates and universal wheels, when an output shaft of a first motor rotates, a worm can be carried to rotate, the worm can drive a third gear on the outer surface of a second threaded rod, then the second threaded rod ...

Engineering vehicle cab allowing workers to get on and off engineering vehicle conveniently

The invention discloses an engineering vehicle cab allowing workers to get on and off an engineering vehicle conveniently. The engineering vehicle cab comprises a cab shell body. Wheel mud blocking areas are arranged below the rear portions of the left side and the right side of the cab shell body respectively. The two sides of the cab shell body are provided with a main cab door hole and an auxiliary cab door hole respectively. The main cab door hole and the auxiliary cab door hole are formed in the front sides of the wheel mud blocking areas. Steps are formed between the bottom edge of the main cab door hole and a floor inside the cab shell body and formed between the bottom edge of the auxiliary cab door hole and the floor inside the cab shell body respectively. The distance n between the steps and the ground ranges from 400 mm to 450 mm, and the distance m between the floor inside the cab shell body and the ground ranges from 680 mm to 720 mm. According to the engineering vehicle cab ...

Imitative organization structure of server cluster

The invention relates to an imitative organization structure of a server cluster. The hardware of the imitative organization structure comprises servers, a data disk and a disk connector. The servers communicate via the preset protocol, the servers choose heterogeneous CPUs (central processing units), operating systems of server versions matched with CPU specifications are installed in each server in advance, the servers are connected with the data disk via the disk connector according to strategy connection, the servers download one version of the operating system randomly when started and download a file system management module matched with the data disk. The servers select different hardware platforms and different software combinations and operate service software of same function to provide consistent services externally, the heterogeneous software and hardware environment and the dynamic connection and combination ways, variety and randomness of the cluster system are improved, difficulty ...

Flexible management method for reconfigurable components in high-efficiency computer

The invention relates to a flexible management method for reconfigurable components in a high-efficiency computer, which is applied to a high-efficiency computer system. The system is generally provided with a plurality of nodes which are connected together through an interconnecting network; a general CPU, the reconfigurable components and a memory in each node are connected together through theinterconnecting network; an operating system kernel of the general CPU is provided with drivers; a virtual layer of a reconfigurable component manager is designed in the operating system kernel and above the drivers; and the reconfigurable component manager takes charge of establishing connection between a reconfigurable device of a process and the physical reconfigurable components, configuring,distributing, releasing and reclaiming each reconfigurable component in or out of the nodes, loading the physical drivers of the reconfigurable device, and delivering the operating request of the upper layer ...

Method for discovering binary code vulnerability based on function model

The invention relates to the field of reverse analysis of computer software, in particular to a method for discovering binary code vulnerabilities based on a function model, which comprises the following steps: firstly, building a code function model based on a static reverse analysis system, and constructing an initial test case suite based on the code function model; secondly, loading the test case suite on a dynamic testing platform through a dynamic testing and replay analysis system according to coverage control and routing strategies, adjusting the test case suite through constraint of optimization and solution with a dynamic path and a path traverse algorithm based on substitution, finely analyzing abnormities according to replay analysis and positioning vulnerabilities; thirdly, storing program properties obtained through respective analysis of the static reverse analysis system and the dynamic testing and replay analysis system, and guiding the respective analysis and testingwith ...

Motor bus head plate

The invention discloses a motor bus head plate which comprises a front frame, a skin, a left lamp cover plate, a right lamp cover plate and a movable cabin door plate. The skin, the left and right lamp cover plates and the movable cabin door plate are arranged on the front frame. The left and right lamp cover plates are arranged below the skin. The movable cabin door plate is arranged between the two lamp cover plates. The lamp cover plates and the skin are of a split structure. The lamp cover plates are movably connected to the front frame through hinges. The upper end of the movable cabin door plate is connected with the front frame in a buckled mode. A door opening notch is formed between front bumpers at the lower end and the bottom end of the movable cabin door plate. Due to the fact that the lamp cover plates and the skin are of the split structure, the lamp cover plates are convenient to disassemble. In addition, due to the fact that the upper end of the movable cabin door plate ...