44results about How to "Accurate access" patented technology

The utility model discloses an optical fiber access automatic detection mechanism and an optical fiber coupler, and the mechanism comprises a flange seat which is fixedly disposed at the outer side of an optical fiber equipment housing, and is provided with an interface column used for being connected with an optical fiber connector; the contact ring is movably sleeved on the interface column, and when the optical fiber connector is inserted, the contact ring abuts against the optical fiber connector and synchronously displaces with the optical fiber connector; the first end of the sensing rod is connected with the back side end face of the contact ring, and the second end of the sensing rod penetrates through the optical fiber equipment shell; the microswitch is fixed on the inner side of the optical fiber equipment shell; when the optical fiber connector is inserted into a set position, the induction rod triggers the microswitch to send out an in-place detection signal; the device is simple in structure, low in cost and easy to maintain, the accuracy and stability of optical fiber access are improved, automatic detection is realized, and the communication quality is ensured.

The embodiment of the invention provides a write request processing method, an IO agent module, a Slave agent module and a computer system. The method applied to the IO agent module comprises the steps that an IO write request of an IO module is obtained; determining the cache line coverage integrity corresponding to the cache line write operation of the IO write request; based on the cache line coverage integrity of the cache line write operation, sending an exclusive permission request of a cache line corresponding to the cache line write operation; when the sending sequence of the IO write requests arrives, if the exclusive authority of the cache line corresponding to the cache line write operation of the IO write requests is acquired, sending a complete write data request corresponding to the cache line write operation based on complete write data corresponding to the cache line; the complete write data request is used for requesting to write complete write data in the cache line, and the complete write data at least comprises write data of write operation of the cache line. According to the embodiment of the invention, the order-preserving requirement of the transmission network can be released under the condition that the data consistency is guaranteed, and the performance of the transmission network is improved.

The invention discloses a pneumatic telescopic automatic clamping device for a high-altitude grounding wire, and relates to the technical field of grounding wire clamping, and the pneumatic telescopic automatic clamping device comprises a base which is provided with a mounting table; the bottom end of the pneumatic telescopic mast is detachably connected to the mounting table, and a control box for controlling the pneumatic telescopic mast to work is arranged on one side of the pneumatic telescopic mast; the wire clamp mechanism comprises a fixed seat, a grounding wire clamp, a bearing seat and a mounting frame; a rotating shaft is arranged between the two supporting plates, one end of the installation frame is installed on the rotating shaft, the outer side of the rotating shaft is connected with a rotating and swinging motor, a lead screw is connected to the bearing seat, one end of the lead screw penetrates through the first clamping part to be fixedly connected with the second clamping part, and the other end of the lead screw is connected with a wire clamp loosening and tightening motor. The adjustable supporting frame comprises a movable adjusting locking ring and a plurality of angle adjusting supporting rods, the pneumatic telescopic mast is sleeved with the movable adjusting locking ring, one end of each angle adjusting supporting rod is movably connected with the movable adjusting locking ring, and the other end of each angle adjusting supporting rod is movably connected to the base. The rotating and swinging design is adopted, the structure is easier to operate and practical, the rotating and swinging function of the mechanism can be achieved only through ground remote control, operation is greatly facilitated, operation safety is guaranteed, the structural design is ingenious, and operation is convenient and fast.

The embodiment of the invention discloses a multi-dimensional tensor protocol calculation method and device, equipment, a storage medium and a product. The method comprises the following steps: determining m reduction dimensions and (n-m) non-reduction dimensions of an n-dimensional tensor; a protocol calculation instruction is generated, K thread blocks are started on the artificial intelligence chip after the protocol calculation instruction is executed, and the K thread blocks conduct protocol calculation on m protocol dimensions in a parallel mode; the number of threads contained in each thread block is associated with the number of elements contained in m protocol dimensions, K is associated with the number of elements contained in (n-m) non-protocol dimensions, and each thread in each thread block reads respective protocol data in a parallel mode; the protocol calculation instruction is sent to the artificial intelligence chip, and the artificial intelligence chip executes the protocol calculation instruction. According to the method, protocol calculation can be carried out on any dimension of the multi-dimensional tensor, the universality is improved, the calculation time is shortened, and the calculation efficiency is improved.

The invention relates to the technical field of data processing, in particular to a multi-dimensional data processing method and device, equipment and a medium, which are used for performing instantiation processing on a template according to an input tensor parameter to obtain an offset calculation instance. And performing initialization operation on the offset calculation instance to determine the step length and the shape of each input array on each output dimension, and recording the step length and the shape in a set storage space. And starting an offset calculation instance to carry out index calculation on the step length and the shape of each input array recorded in the storage space on each output dimension so as to obtain the offset corresponding to the output array. And calculating the data corresponding to the offset according to a set calculation rule to obtain an output result. By pre-calculating the step length and shape of each input array on each output dimension, unnecessary memory access can be reduced. The index calculation process is simplified by constructing the offset calculation instance, and data access and calculation can be efficiently and accurately achieved.

The embodiment of the invention provides a data access method and device and a storage medium. On one hand, the application is installed in the virtual disk, so that the application can be independently arranged outside the cloud desktop, efficient migration of the application can be achieved by dynamically mounting the virtual disk, and data copying is not needed any more. And on the other hand, when the access request for accessing the user configuration data is monitored in the cloud desktop, the access path in the access request can be redirected to the actual storage path in the virtual disk, so that the access to the user configuration data is not only limited to the installation user of the application, and the user experience is improved. The user configuration data in the virtual disk can be accessed by any cloud desktop on which the virtual disk is mounted, so that the user configuration data under the migrated application can be accessed accurately in a barrier-free manner in the cloud desktop, and the migrated application can be normally operated in the cloud desktop. Therefore, in the embodiment of the invention, through the cooperation of the two aspects, the application migration efficiency in the cloud desktop can be effectively improved.

The invention discloses a system, method and device for adapting to a cloud platform MQTT communication specification, and belongs to the technical field of communication. The system comprises an MQTT protocol basic service module which is used for receiving target parameters which are configured by a user and are related to an MQTT protocol, and establishing connection with a cloud platform according to the target parameters; the process interaction module is used for receiving process entries set by a user and trigger conditions of the process entries; under the condition that the triggering condition is met, executing the process entry; the process entries represent data interaction actions with the cloud platform; and the data interaction module is used for determining a data format and a message format used by the cloud platform, and forming interaction data based on the data format and the message format to perform data interaction with the cloud platform in the process of executing the flow entries. According to the method, the system has the capability of adapting to different cloud platforms, only configuration parameters need to be modified for the cloud platforms of MQTT protocols of different specifications, docking software does not need to be independently developed for each cloud platform, and the development cost of the software is greatly reduced.

The present invention discloses a method and system for integrating public data resources based on artificial intelligence, and relates to the technical field of data resource integration. The method for integrating public data resources based on artificial intelligence obtains public resource data, and the public resource data includes text data and picture data; screens the public resource data to obtain text data to be classified and picture data to be classified; integrates and classifies the public resource data based on an integrated classification model stored in a database and then stores the integrated classification model, and the integrated classification model includes a text data integrated classification model and a picture data integrated classification model, which solves the problem that the amount of public data is huge, the data is scattered and difficult to manage.

The utility model relates to the technical field of glass processing equipment, and provides a glass sheet storage device which comprises a frame, and a feeding mechanism, a jacking mechanism and at least one lifting mechanism are installed in the frame. The feeding mechanism comprises at least one rotating shaft, the rotating shaft is rotationally connected with the frame, and the rotating shaft is used for conveying glass sheets; the material ejecting mechanism comprises at least one cross rod, a plurality of material ejecting pieces are installed on the cross rod, and the material ejecting pieces have the function of stretching and retracting up and down; the lifting mechanism comprises a second chain, the second chain is provided with at least one material bearing rod, and the material bearing rods are used for bearing glass sheets. According to the glass sheet storage device, the feeding mechanism, the jacking mechanism and the lifting mechanism are integrated, accurate storage and taking of the glass sheets are achieved, the problem that a traditional storage device can only output the whole layer of glass sheets integrally is solved, a user can take out the needed glass sheets independently according to actual requirements, and the use is convenient. And the storage state of other glass sheets cannot be influenced.

The utility model provides a file operation accuracy checking device based on the RFID technology, and relates to the technical field of file management, the file operation accuracy checking device comprises a file cabinet, a placing assembly and a pushing assembly, the placing assembly and the pushing assembly are arranged in the file cabinet, and the surface of the placing assembly is further provided with a file body and a blank label; identification tags are fixed on the surface of the file body, and digital tags are fixed on the surface of the file cabinet. By arranging the blank labels and the digital labels, when a new file is input, the control equipment controls the pushing assembly to push out the vacant placing boxes and records the digital labels corresponding to the placing boxes, and the reader-writer firstly reads information of the identification labels on the surfaces of the file bodies and inputs the information into the blank labels on the surfaces of the corresponding placing boxes; the digital tag, the blank tag and the identification tag are integrated into a whole, and then the reader-writer needs to check information in the digital tag, the blank tag and the identification tag every time the file is stored and taken, so that the accuracy of file operation is checked, and the accuracy of file storage and taking is ensured.

The utility model discloses a stacker convenient to adjust height, and relates to the technical field of stackers, the stacker convenient to adjust height comprises a mounting frame, an adjusting mechanism is arranged on the outer surface of the mounting frame, and the adjusting mechanism comprises a base plate. Firstly, a first bolt is unscrewed in a first moving block, then a motor can be started, then the motor enables a threaded rod to rotate, then the rotation of the threaded rod enables a first threaded barrel to move, at the moment, the first threaded barrel drives a moving strip to move, the motor enables the threaded rod to rotate, and then the rotation of the threaded rod enables the first threaded barrel to move on the threaded rod; and then a first threaded barrel enables a first moving block to slide on a fixing strip through transmission, and the effects that the height of the stacking machine can be simply and conveniently adjusted, the universality and flexibility of the equipment are enhanced, the stacking machine can more accurately store and take objects, the possibility of misoperation is reduced, and the working efficiency is improved are achieved.

The present invention provides a fully automatic storage warehouse and a control method thereof, which relate to the field of automation technology and include a hardware system and a software system. The hardware system includes an intelligent transport robot and an environmental control module, and the software system includes a central control system, a path planning module, a task scheduling module, and a visual management module. The central control system controls the intelligent transport robot to execute access instructions according to an optimal path and a collaborative control strategy, and monitors the state and position information of the intelligent transport robot in real time, and dynamically adjusts task allocation and path planning. The central control system predicts and adjusts the optimal storage environmental parameters according to historical data and current status through an environmental parameter prediction model, and sends the environmental parameter instructions to the environmental control module.

The invention provides a full-chain supply process tracking method based on engineering materials of a data medium station, and the method comprises the steps: collecting engineering project ERP, ECP, ELP, EIP, e material supply chain work platform data, cross-professional information platform data and external ecological resource sharing through the data medium station, enabling the full-chain data to be accurately accessed to the data medium station, achieving the integration of upstream and downstream resources of a supply chain, and achieving the tracking of the whole-chain supply process of the engineering materials of the data medium station. According to the method, supply chain internal, cross-professional, supplier and ecosphere data information is communicated, a set of cross-professional and cross-platform data management cooperation mechanism is established, big data analysis is performed on the obtained information according to supply chain business needs, and accurate visualization of supply chain full-chain data is realized through display of an engineering project full-chain visual business board. And the supply chain is driven to be transformed from traditional to wisdom.

In a first aspect of the invention, it is claimed a computer-implemented method for assisting the movement of a visually impaired user by means of a wearable device 1, comprising the following steps: S1- Acquiring data from the environment of the visually impaired user S2- Fusing the acquired data, creating, continuously updating of a Live Map S3- Determining, continuously updating and storing, of at least one navigation path together with associated navigation guiding instructions for the visually impaired user to navigate from the current position of the visually impaired user to a point of interest, continuously selecting one preferred navigation path from the at least one navigation path, and continuously sending to the visually impaired user the preferred navigation path, together with associated navigation guiding instructions. S4- Guiding the visually impaired user along the preferred navigation path, by using guiding modes for transmitting each associated navigation guiding instruction, comprising haptic and / or auditory cues. The invention details how the steps S2, S3 and S4 are carried out and also details the content of the Live Map. Said Live Map comprises data from the sensors regarding objects and living beings, relationships between the objects and the living beings and different types of areas: walkable area, non-walkable area and conditional walkable area, In a second aspect of the invention, it is claimed a wearable device for assisting the movement of a visually impaired user, configured to apply the steps of the method.

The present invention relates to the technical field of stacker equipment, specifically to a pallet stacker and a method for using the same, including a processing support base, wherein the top of the processing support base is fixedly connected to a loading platform. According to the present invention, when a pallet needs to be transported, a servo motor drives a rotating rod to rotate, and the rotating rod drives a sprocket to rotate, so that the sprocket drives a chain to move, and the chain drives a bearing frame to move longitudinally by pulling a bearing lifting block, and the bearing frame moves longitudinally through a longitudinal guide rail to achieve smooth lifting and lowering. When the bearing frame rises, the bearing frame drives a fixed frame to move, and the fixed frame drives a driving gear to move through a rotating shaft. Because the driving gear is meshed with a longitudinal tooth plate, the driving gear rotates, and the driving gear drives the rotating shaft and the driven gear to rotate, so that the driven gear drives a load-bearing protective plate to move through a tooth groove, and the load-bearing protective plate is inserted into the bottom of the pallet to prevent the pallet from falling during the transmission process.

The invention relates to the technical field of storage, and provides a storage device, a storage method, a chip and electronic equipment. The storage device comprises a data storage module, a hit judgment module and a request control module, the request control module judges the type of a memory access request, sends the memory access request of a cache type to the hit judgment module to judge the hit condition, then determines a memory access address according to the hit condition, and sends the memory access request and the memory access address to the data storage module; sending the memory access request of the direct access type and the memory access address to a data storage module; and the data storage module accesses the memory access address. According to the storage device, the data storage module is divided into the cache region and the direct access region, and the response modes of different types of access requests are controlled through the request control module, so that the storage device can realize a cache function and can also realize convenient, efficient and accurate storage space control and access, and the performance of the storage device is improved.

The application discloses an electronic invoice obtaining method and device, electronic equipment and a storage medium. The method comprises the following steps: extracting a first domain name, a full address and routing information from an electronic invoice obtaining request; selecting a proxy download server according to the first domain name and the full address; obtaining a supplier proxy IP address based on the proxy download server; sending an access request carrying the first domain name and the routing information to a supplier server by using the proxy download server according to the supplier proxy IP address, so that the supplier server obtains an electronic invoice corresponding to the routing information after receiving the access request, and sends the electronic invoice to the proxy download server; receiving the electronic invoice forwarded by the proxy download server; and forwarding the electronic invoice to a user end. The supplier server where the electronic invoice is located can be accessed more accurately, the accuracy of downloading the electronic invoice is improved, the success rate of obtaining the electronic invoice is improved, and the processing efficiency of an account business is improved.

The present disclosure provides a data weaving processing method, device, electronic device and readable storage medium, which belongs to the field of communication technology. The method collects and stores metadata for the original data distributedly stored in the data source node, without the need to centrally transmit the data of a large number of edge nodes to the data center, reducing the cost of data replication, transmission and storage, improving data governance efficiency, reducing network congestion, bandwidth costs, and data center computing power requirements, and avoiding possible security and privacy risks during data replication, transmission and storage, improving overall data processing, access and management; by collecting metadata of the original data and building a knowledge graph based on metadata, data integration across businesses and systems between data source nodes is realized, and the degree of global data correlation is improved; and a dynamic data knowledge catalog is generated for users' real-time data retrieval needs, providing a unified, comprehensive and intuitive data view, and realizing accurate retrieval and access to data.

Embodiments of the present application provide a communication method, device, system, storage medium and program product, relating to the technical field of communication. The method comprises: a terminal receiving first information sent by an access network device, the first information being used to indicate whether a wireless communication resource is an AIoT (environmental Internet of Things) supporting resource. If the terminal supports an AIoT function or is running an AIoT service, performing cell selection or cell reselection according to the first information. In this way, the terminal supporting the AIoT function or running the AIoT service can more efficiently and accurately access an available cell, improving the communication quality and stability of the AIoT service.

The present invention discloses a method, device, system, storage medium and terminal for data access. The method comprises: storing first-category data in a first storage system table and second-category data in a second storage system table, wherein the access frequency of the first-category data is greater than that of the second-category data; receiving a data request message, wherein the data request message is used to indicate the storage system table where the data to be processed is located, wherein the storage system table includes the first storage system table and the second storage system table; and returning the first-category data or the second-category data according to the data request message. The present invention solves the technical problem of low access efficiency when accessing hot data and cold data due to the prior art.

The present invention provides an intelligent storage and retrieval device for articles, belonging to the field of intelligent storage and retrieval technology, comprising a cabinet, a storage rack, an in-and-out material conveyor belt, a control unit and a pick-and-place assembly, wherein the cabinet is placed on a horizontal plane, the cabinet is a cylindrical hollow structure, the storage rack is installed in the cabinet and is coaxial with the cabinet, the in-and-out material conveyor belt runs through the side of the cabinet, the control unit is installed on the cabinet, the pick-and-place assembly comprises a rotating mechanism, a guide rod, a connecting block, a lifting mechanism, a telescopic mechanism and a gripping and placing manipulator, and the pick-and-place assembly is installed in the center of the interior of the cabinet. The present invention has a simple structure, convenient operation and high storage and retrieval efficiency.

The invention relates to the technical field of intelligent logistics management and control, in particular to an intelligent logistics shuttle vehicle which comprises shuttle vehicle bodies, transverse plates are symmetrically arranged between the two shuttle vehicle bodies front and back, and L-shaped frames are placed on the sides, close to each other, of the two shuttle vehicle bodies. The L-shaped frame on the right side is fixed to the shuttle vehicle body through a bolt, electric sliding rails are arranged on the sides, close to each other, of the two L-shaped frames, and electric sliding blocks are arranged on the electric sliding rails in a sliding mode. According to the device, the distance between the conveying belts can be accurately adjusted according to the size of the logistics box, the motor drives the lead screw and the nut mechanism, synchronous movement of the L-shaped frame and the conveying belts is achieved, and it is guaranteed that the logistics box can be smoothly and accurately stored and taken. The flexibility and applicability of the device are improved through the self-adaptive adjusting mechanism, and logistics boxes of different sizes can be processed.

The utility model discloses a kind of storage rack storage devices, including horizontal tray and vertical tray, vertical tray is equipped with in the upper portion of horizontal tray by guide column, horizontal tray is slidably connected with base, vertical tray is slidably connected with the guide column;The top of vertical tray is equipped with double recessed rail groove, the double recessed rail groove is slidably connected with telescopic stand, the side portion of telescopic stand has telescopic rack gear, and telescopic motor is equipped on vertical tray and is matched with telescopic rack gear.This utility model is through the automatic collaborative motion of horizontal tray, vertical tray and telescopic stand, accurately position object tray to target storage grid, so that the access process of sample piece is completely unnecessary manual intervention, greatly save manpower and eliminate human error;Further reach the beneficial effects of convenient access, accurate positioning, improve storage efficiency.

The utility model discloses a floating mounting device of a fork positioning pin, which comprises a first upper fork and a second upper fork of a double-fork-body fork, the first upper fork and the second upper fork are symmetrically arranged, a first mounting plate is mounted on the first fork, a second mounting plate is mounted on the second fork, the first mounting plate is rigidly connected with the first upper fork through a fixed connecting unit, and the second mounting plate is rigidly connected with the second upper fork through a fixed connecting unit. The second mounting plate is connected with the second upper fork through a floating connecting unit, the floating connecting unit comprises a shaft sleeve and a positioning pin, a plurality of first mounting holes are formed in the second mounting plate, second mounting holes are formed in the positions, corresponding to the first mounting holes, of the second upper fork, and the shaft sleeve is arranged on the positioning pin penetrating through the first mounting holes and the second mounting holes in a sleeving mode; an assembly gap is formed among the shaft sleeve, the second mounting plate and the second upper fork, and the first mounting plate and the second mounting plate are connected through a connecting plate. According to the utility model, the clamping stagnation phenomenon caused by rigid connection is avoided, and the smooth operation of the pallet fork is ensured.

The utility model provides a square mechanical express post box. The square mechanical express post box comprises a box body, a cabinet door, parcel storage openings and a sealing assembly. The box body is divided into a plurality of storage compartments of which at least one side is open; a cabinet door is arranged on the opening in one side of each storage compartment; an opening in one side of each storage compartment is configured as a parcel storage opening; the sealing assembly is arranged on one side of the box body and used for sealing the parcel storage opening. Wherein the sealing assembly has a sealing state and an opening state, in the sealing state, the sealing assembly seals all the parcel storage openings, and in the opening state, a courier stores express parcels in the corresponding storage compartments through the parcel storage openings. According to the square mechanical express post box, express parcels can be stored conveniently, accurate storage and taking of the express parcels can be achieved without adopting an electric control module or a network control module, efficient storage is considered, meanwhile, carbon emission can be reduced, and the purposes of energy conservation and emission reduction are achieved.

The invention discloses an ORB algorithm acceleration system and method based on an FPGA, and the system comprises an image feature caching module which is used for storing an input original image in a BRAM storage unit according to an image pixel column form; the FAST feature extraction module is used for performing preliminary feature point extraction on the original image based on a dual-channel parallel processing circuit to obtain feature points and angular points; the Gaussian pyramid module is used for performing down-sampling and Gaussian smoothing filtering processing on the original image to obtain a smoothed image; the rotation angle calculation module is used for carrying out gray centroid calculation according to the coordinate values of the feature points and the smoothed image to obtain the rotation angles of the feature points; and the rBRIEF descriptor module is used for calculating and generating an rBRIEF descriptor according to the rotation angle of the feature point and the smoothed image to obtain ORB feature point data. The hardware resource utilization rate and the calculation speed are improved.

The utility model relates to the field of wastewater treatment, in particular to an anaerobic reactor water distributor easy to maintain and clean. According to the technical scheme, the device comprises an annular water distribution pipe, a water distribution pipe, a control valve, a pressure detection assembly, a water distribution pipe connecting assembly and an anaerobic reactor, a plurality of sets of sleeves are embedded in the upper side of the anaerobic reactor, the sleeves are provided with the water distribution pipe connecting assembly, and the sleeves are movably connected with the water distribution pipe through the water distribution pipe connecting assembly; one side, far away from the sleeve, of each water distribution pipe is fixedly connected with an annular water distribution pipe; according to the device, whether the anaerobic water distribution pipe is blocked or not can be judged through the change of the value of the pressure detection assembly, and then a certain flow channel of the blocked anaerobic water distribution pipe is cleaned and maintained or disassembled, overhauled and replaced; when a certain flow channel of the anaerobic water distribution pipe is blocked, the control valve can be closed, the cleaning connector valve can be opened, the high-pressure water gun is connected with the cleaning connector, the blocked flow channel of the water distribution pipe is subjected to high-pressure washing, and the situation that the flow channel is further blocked and influences the anaerobic water distribution effect is prevented.

The utility model discloses a power supply system with a power-on over-current protection circuit and an air conditioning system, and the power supply system with the power-on over-current protection circuit comprises a power factor correction circuit and a bus capacitor which are carried on a live wire and a zero wire which are used for providing electric energy. The power factor correction circuit is used for adjusting the voltage on the live wire and supplying power to the bus capacitor, and the bus capacitor can supply power to a load connected with the bus capacitor. The thermistor and the power factor correction circuit are connected in series on the live wire together, the voltage detection circuit is used for detecting electrical parameters on the live wire, and the switch control circuit is used for adjusting the access state of the thermistor according to the electrical parameters. Compared with the prior art, the circuit can accurately control the connection and disconnection of the thermistor, thereby solving the problem that a unit is shut down due to faults when the power-on interval is short.

The utility model provides a kind of straight top and bevel top secondary ejection mechanism of large-sized automobile electroplating decorative strip mould, belong to mould technical field.It includes lower mould plate, the lower mould plate is provided with decorative strip forming part, the lower mould plate downside is provided with the straight bevel top composite secondary ejection mechanism corresponding with decorative strip forming part, the straight bevel top composite secondary ejection mechanism includes ejection plate and the gas top type bevel top component and straight top component connected with ejection plate.By straight bevel top composite secondary ejection mechanism in the gas top type bevel top component can be in before ejection to the junction of product and lower mould plate high-pressure gas makes decorative strip part and lower mould plate separate, again by ejection plate drive gas top type bevel top component and straight top component to decorative strip exert oblique and vertical thrust to complete secondary ejection, this design dispersion ejection force, avoid single ejection stress concentration, effectively solve the problem of decorative strip damage when ejection, improve product pass rate.

The utility model relates to a kind of steel plate electric stereo shelves, belong to the technical field of warehousing equipment, including frame, hinge, left door and right door, left door, right door and frame are connected by hinge. The frame is equipped with guide rail, the left door and right door are equipped with door guide rail with guide rail horizontal alignment, the frame is equipped with several pullouts, the pullout is equipped with steel plate for placing, the lower end of the pullout is equipped with long shaft, the long shaft both ends are equipped with bearing seat between frame, the lower end of the pullout both sides is equipped with rack, the rack and long shaft are equipped with gear with long shaft and insert embedded type fixed, with the characteristics of convenient operation, time-saving and labor-saving road operation safety and reliability. Stereo shelves with left and right doors, steel plate can be slid from frame to left and right doors when taking material, using the way of crane lifting, realize multiple parallel arrangement of rack, greatly improve space utilization, and adopt electric drive, reduce the labor intensity of worker.