261results about How to "Reduce the situation" patented technology

The invention provides a low-sulfur manganese-silicon alloy and a production method thereof.The method comprises the steps that silica, coke and manganese ore are crushed and then mixed with lime, and smelting raw materials are obtained; a closed electric furnace is filled with smelting raw materials for smelting, and alloy melt is obtained; the alloy melt is transferred into a ladle, a desulfurizing agent is added for the desulfurization process, and manganese-silicon alloy molten iron is obtained; and the manganese-silicon alloy molten iron is poured into a mold for ingot casting, and a manganese-silicon alloy finished product is obtained after cooling. According to the method, the method capable of effectively reducing the sulfur content in the manganese-silicon alloy is provided through the steps of raw material crushing and mixing, in-furnace power transmission refining, out-of-furnace desulfurization, casting molding and the like, the low-sulfur manganese-silicon alloy is produced, and therefore control over the sulfur element content in a steelmaking product is facilitated.

The invention belongs to the technical field of document analysis, and particularly discloses a document analysis method and system, a terminal and a medium. Comprising the steps of obtaining content and page representation of a to-be-analyzed document; performing adaptive segmentation on the document content to obtain a segmentation sequence; performing joint coding on the text features, the visual features and the layout features of the segmented sequence to generate fusion feature representation used for representing cross-modal relevance; determining a hierarchical structure relationship of the document based on the fused feature representation; inputting a text corresponding to the hierarchical structure into a language model subjected to field training to generate a semantic analysis result of the document; and according to a semantic analysis result, generating knowledge representation of the documents and establishing associated information between the documents. According to the method, a consistent processing link can be formed among multi-modal feature fusion, document structure inference and semantic understanding, and high-precision structured analysis of complex document contents is realized.

This utility model discloses an antistatic polymer POF heat shrink film processing equipment. A cutting plate is clamped to the top of the processing frame, and several cutting hydraulic cylinders are equidistantly installed on the top of the processing frame. A punching blade is clamped to the bottom of each cutting hydraulic cylinder. Several fixing frames are welded equidistantly to the top of the processing frame, and several moving limit ropes are equidistantly clamped to the top of the punching blades. A positioning support frame is installed at the bottom of each moving limit rope. This utility model, through the flattening and guiding limit during movement and the separation and cooperation during punching, allows for steady flattening of the film during movement, while avoiding excessive stretching during punching, which could lead to film breakage. This ensures steady punching during continuous production, reducing the occurrence of punching position deviation and uneven punching due to wrinkles, greatly guaranteeing product quality.

The utility model provides a kind of for coke coal pre-arrangement gangue intelligent dry method sorting equipment, it belongs to coal sorting technical field, wherein upper layer X-ray generator, upper layer beating device, lower layer X-ray generator and lower layer beating device are all installed on equipment rack, unified dust collector and control terminal are equipped;Upper layer X-ray receiver and lower layer X-ray receiver are respectively arranged in the inner cavity of upper layer sorting conveying device and lower layer sorting conveying device;Upper layer sorting conveying device and lower layer sorting conveying device all include transmission belt, transmission roller and driving motor, transmission roller is fixedly connected in the inner cavity of equipment rack by bearing.Compared with traditional single-layer photoelectric sorting equipment, the utility model uses upper and lower double-layer sorting structure, a single device can process two layers of coal simultaneously, greatly improves the processing capacity of coal, when facing a large number of coal sorting tasks, multiple devices do not need to be used simultaneously, saves sorting time, improves overall production efficiency.

The utility model discloses a multi-contact line-to-board connector, and belongs to the technical field of connectors. A multi-contact line-to-board connector comprises a plug and a socket which are matched with each other, and further comprises a pair of first conducting strips which are arranged in the socket, contact elastic pieces are fixedly arranged at one ends of the first conducting strips, a connecting groove is formed between the contact elastic pieces, a second conducting strip is arranged in the plug, and the outer walls of the top and the bottom of the second conducting strip abut against the contact elastic pieces; according to the utility model, the pair of first conducting strips with the contact elastic sheets are arranged in the socket, the connecting grooves with small openings and large interiors are formed between the contact elastic sheets, reliable connection between the second conducting strips and the first conducting strips can be ensured under the elastic action of the contact elastic sheets, and due to the elastic effect of the connecting grooves, the reliable connection between the second conducting strips and the first conducting strips can be ensured after multiple times of plugging. The compact effect between the second conducting strip and the connecting groove can still be kept, the situation of loosening or falling off is reduced, and the reliability and stability during use are guaranteed.

This invention relates to the field of chip packaging technology and discloses a chip packaging structure that facilitates heat dissipation, including a main body and a chip, with the interior of the main body being hollow. When a connecting channel is formed on both sides of the top of the main body, the heat generated by the chip can be dispersed outward through this channel. Simultaneously, when multiple flip plates are flipped to expose the sidewalls of the chip, an open heat dissipation channel is formed. The flow of air and the outflow of hot gas accelerate the outward diffusion of heat, thereby reducing the possibility of heat flowing back into the chip and accumulating inside the chip when its heat is blocked during operation. This improves the heat dissipation efficiency and packaging quality of the chip after packaging.

The utility model relates to the technical field of rubber processing equipment, and discloses rubber shock pad processing and feeding equipment which comprises a moving table and connecting frames fixed on the front side and the rear side of the upper surface of the moving table, the upper surfaces of the connecting frames are fixedly connected with side plates, and the inner side faces of the side plates are fixedly connected with feeding hoppers. And the bottom of the outer surface of the feeding hopper communicates with a feeding pipe. According to the feeding equipment for rubber shock pad processing, the feeding hopper, the feeding pipe, the storage device and the moving table are used in cooperation, rubber particle raw materials in the storage barrel enter the feeding hopper through a conveying hose, a hydraulic cylinder pushes a sliding table to move, the outlet end of the feeding pipe moves to the position above a mold, then feeding is conducted on the mold, and the rubber shock pad processing efficiency is improved. Therefore, the device can supply common rubber particle raw materials to the mold, the inner diameters of the conveying hose, the feeding hopper and the feeding pipe are large enough, the probability of blockage of the rubber raw materials is further reduced, and the smoothness of rubber feeding is improved.

The utility model discloses a feeding device for sensor assembly. The feeding device comprises a bottom frame, a vertical plate and a movable base. A mounting cylinder is arranged at the top of the bottom frame, an O-shaped ring vibration disc is arranged in the mounting cylinder, a material supplementing frame is arranged on one side of the O-shaped ring vibration disc, and a channel is formed between the material supplementing frame and the O-shaped ring vibration disc; the feeding mechanism is driven to quickly move in the horizontal direction and the vertical direction through cooperative work of a plurality of air cylinders, so that O-shaped rings are quickly grabbed and transferred by the negative pressure suction device, and the feeding time is greatly shortened; o-shaped rings are automatically and orderly arranged through the O-shaped ring vibration disc, the O-shaped rings are supplemented in time in cooperation with the material supplementing frame, and continuous supply of the O-shaped rings is guaranteed; the feeding precision is improved through positioning formed by a positioning seat, a positioning block, a telescopic rod and a spring; the feeding process is monitored in real time through the scanner, problems are found and fed back and adjusted in time, and the operation reliability of the whole feeding device is further improved.

This utility model relates to the field of textile machinery technology and discloses a yarn gripping and dispensing mechanism for a yarn feeding machine, including a worktable, a dispensing table, yarn bars, a clamping assembly, a yarn gathering assembly, and a yarn detection and operation assembly. Through the cooperation of a motor and rotary bearing on a support base, a connecting frame, a support frame, and an electric telescopic rod, the clamping assembly can move flexibly in multiple directions to accurately grip the yarn bars. A probe can detect the number of yarn bars. A camera can monitor in real time and upload images to a PLC system to guide the gripping and dispensing actions. An air pipe connects to a bidirectional air pump inside the worktable, enabling air suction for yarn end gripping and air blowing for yarn end dispensing. The entire system automates yarn bar gripping, dispensing, and yarn end processing, significantly improving operational efficiency and accuracy.

The cable printing device comprises a printing mechanism, the printing mechanism comprises a cleaning assembly, a mounting plate and a printing wheel, and the printing wheel is mounted on the mounting plate; the cleaning assembly comprises a brush plate and a position adjusting screw rod, the brush plate is installed on one side of the printing wheel, one end of the position adjusting screw rod is connected to the installation plate, the brush plate is in threaded connection with the position adjusting screw rod, bristles are further arranged on the brush plate, and the face, provided with the bristles, of the brush plate faces the printing wheel. Through the arrangement of the cleaning assembly, impurities on the side wall of the printing wheel are effectively cleaned, the situation that characters printed on the cable are not clear or incomplete is reduced, and therefore the percent of pass of the cable is effectively improved; and through the arrangement of the cooling mechanism, the thermal deformation of characters printed on the cable is effectively reduced, so that the aesthetic degree and the qualified rate of the cable are improved.

This utility model relates to the field of conveying device technology, and in particular to a material conveying device for a cogeneration combustion boiler. The technical solution includes a support frame, a set of transmission rollers rotatably arranged between the support frames, and a transmission belt between the transmission rollers; a motor fixedly mounted on one side of the support frame, the output end of the motor being connected to one end of the transmission rollers via a diverter; and multiple connecting plates fixedly mounted on the outer wall of the transmission belt, with a hopper assembly for material conveying fixedly mounted on one side of each connecting plate. This utility model allows for flexible adjustment of the hopper's volume and shape according to actual production needs, thereby precisely controlling the material conveying amount, avoiding excessive or insufficient material conveying, reducing energy waste, lowering equipment operating pressure, and ensuring stable boiler combustion and production capacity output.

The utility model discloses annealing equipment for stainless steel plate production, which comprises a box body, a door plate arranged on one side of the box body, a cooling assembly arranged in the box body, a mounting box arranged on the box body, an extraction assembly arranged on one side of the mounting box, a conversion assembly arranged in the mounting box, a fixing plate arranged on one side of the fixing plate, and an inclined pipe arranged on one side of the fixing plate. A sponge block is arranged on the other side of the fixing plate and connected with one end of a mounting frame, a sponge block is also arranged at the other end of the mounting frame, an extrusion plate is arranged at the end of the sponge block, a condensation pipe is mounted in the mounting frame, a drainage pipe is arranged on one side of the mounting box, and a driving mechanism is arranged in the mounting box. According to the annealing equipment for stainless steel plate production, water vapor is conveniently recycled through the conversion assembly, so that water resources are saved, a sponge block can be regularly extruded through an extrusion plate driven by a motor, absorbed water is discharged, and the water vapor treatment efficiency is further improved.

The invention discloses a site construction method for a perlite heat insulation layer of an LNG storage tank, and relates to the technical field of LNG storage tanks, and the site construction method comprises the following steps: step 1, increasing the number of perlite filling ports at the top of the tank, reducing a repose angle to 22 degrees when a connecting pipe is poured, and reducing gaps and uneven density; step 2, drying and replacing the perlite filler so as to reduce the moisture and oxygen content of the perlite filler; 3, the dried and replaced perlite filler is fed into perlite filling openings for filling, perlite is fed into a storage tank in a gas driving mode in the perlite filling process, in order to guarantee the online perlite filling effect and filling safety, the number of the filling openings is increased, the filling quality of expanded perlite is improved, and the production cost is reduced. The conditions of gaps and non-uniform density are reduced, so that the cold insulation effect is improved, the evaporation rate of the LNG storage tank is reduced, and the LNG in the storage tank is kept in an ideal storage state.

The invention discloses a pet commodity management system supporting multi-store cooperation, and relates to the technical field of pet commodity management. The system comprises a customer group portrait data acquisition module, a data fusion analysis module, a personalized replenishment decision module, an unsalable commodity identification and early warning module, a cross-store matching and scheme generation module and a compliance allocation and inventory cancel-after-verification module. The customer group demand characteristics of each store are accurately captured through the data acquisition module and the customer group portrait construction module, personalized replenishment is realized in combination with associated data, the problem that unified replenishment lacks pertinence is solved, unsalable commodities are timely identified through the unsalable early warning module, and the commodity replenishment efficiency is improved. An accurate inventory checking scheme is pushed based on the customer group portrait matching degree by means of a cross-store inventory checking matching module, closed-loop management and control are completed in cooperation with an allocation execution module and an inventory verification module, the problems of low inventory checking efficiency and resource waste of unsalable commodities are solved, the demand fluctuation of the pet industry is effectively adapted, and dynamic balance of supply and demand of multi-store pet commodities is finally achieved.

The invention aims at providing surveying equipment for hydrogeological survey, and relates to the technical field of measuring equipment, the surveying equipment comprises an electrode bar assembly, the electrode bar assembly comprises a pole, a pole cap and a drilling rod, and the electrode bar assembly is used for being connected with soil and measuring the resistivity of the soil; the driving assembly comprises a battery pack, a threaded sleeve, a shaft sleeve and a motor and is used for driving the electrode bar assembly to insert underground; the compaction assembly comprises a pressing rod, a first pressing plate and a second pressing plate, and it can be guaranteed that soil is attached to the electrode bar assembly. And the straightening assembly comprises a third mounting plate, a laser range finder, a measuring plate, a lens and a developing plate, plays an auxiliary role in insertion of the electrode bar assembly, ensures that the electrode bar assembly is linearly distributed, and solves the problems that the measurement position is deviated and the accuracy and the reliability of measurement data are influenced due to the fact that the electrode bar is easily inclined when being manually inserted in the prior art.

This application provides a cold start method, apparatus, electronic device, and storage medium for a recommendation system. The method includes: determining a list of historical clicked content corresponding to user tags based on acquired user tracking data and user tags; calculating feature data of the historical clicked content based on the user tracking data; smoothing the feature data to calculate the click-through rate (CTR) data corresponding to the historical clicked content, and determining a first candidate content list corresponding to the user tags based on the CTR data; determining a second candidate content list based on the first candidate content lists corresponding to multiple user tags under the same user; performing Thompson sampling on the CTR data of the candidate content in the second candidate content list to calculate a random number corresponding to the candidate content; and reordering the candidate content in the second candidate content list based on the random number to determine a user recommendation list. This application can provide users with more differentiated recommended content.

This utility model discloses a quantitative dispensing and packaging device for edible oil, relating to the field of edible oil packaging technology. It includes a base, with two mounting brackets fixedly connected to the upper surface of the base. An oil storage tank is fixedly connected to the upper surface of the two mounting brackets, and an oil inlet pipe is fixedly connected to the upper surface of the oil storage tank. A pump is mounted on the surface of the base, and a quantitative tank is mounted on the surface of the base. An oil drain pipe is fixedly connected to the side of the pump and the quantitative tank that are close to each other, and an oil outlet pipe is fixedly connected to the side of the oil storage tank that is close to the pump. Valves are provided on the surface of both the oil drain pipe and the oil outlet pipe. A dispensing head connected to the pump is mounted on the surface of the base. This utility model uses a rotating auger, scraper, gear ring, gear, stirring rod, and stirring blades to stir the edible oil in the oil storage tank, reducing the occurrence of stratification and sedimentation in the edible oil and improving the practicality of the edible oil dispensing and packaging device.

The application discloses a kind of TGV glass substrate processing equipment and processing method, the TGV glass substrate processing method is, preheating is carried out to the point to be punched before punching, so that the temperature of the point to be processed and surrounding area is increased to form preheating zone, preheating can make the local temperature of glass substrate more uniform, so that when punching, the heat applied by laser cutting is not easy to cause sharp temperature difference, thereby effectively reducing the thermal stress generated in the material, and then eliminating or reducing the occurrence of crack or rough surface condition;The TGV glass substrate processing equipment is connected by the light path of cutting head and preheating head, and the laser beam of cutting head is partially reflected into the preheating head by the beam splitter, so that punching of glass substrate and preheating of the next processing point are carried out at the same time, which saves the processing time of glass substrate.

The utility model discloses a cell storage transfer box, which relates to the technical field of transfer boxes, and comprises a transfer box body, a sliding chute is arranged in the transfer box body, a screw rod is arranged in the sliding chute, and a driving component is arranged on one side of the transfer box body. By the adoption of the structure, the driving assembly is installed on the transfer box body and used for driving the lead screw to rotate in the sliding groove, so that the screw block on the surface of the lead screw is driven to move in the sliding groove, the screw block drives the movable plate to move, the movable plate drives the pipe frame to move, and the pipe frame can stretch out of the transfer box body; a worker can take out or place the tube rack and the test tube more easily and quickly without performing complex actions in a narrow space, so that the smoothness of the whole operation is improved, the occurrence of unforeseen circumstances such as test tube rupture, cell sample pollution or damage and the like caused by misoperation is reduced, and the working efficiency is improved. Therefore, precious cell samples are protected from being damaged.

The application discloses a kind of automatic smearing equipment for lubricating grease of speed reducer, including installation base, setting in the receiving cavity of installation base top, limit mechanism is installed in receiving cavity inside and is set in the auxiliary cleaning mechanism and lubricating mechanism of receiving cavity both sides, receiving cavity top is equipped with locating cover, locating cover is located just above limit mechanism, sliding groove is opened in the both ends of installation base, auxiliary cleaning mechanism and lubricating mechanism are all set in sliding groove inside;Compared with prior art, when the gear gap is smeared with lubricating grease, the discharge plate and one side of the gear can be staggered, and the angle of the extrusion piece can be adjusted according to actual use requirements during the movement, so that the extrusion piece can be cross-set on one side of the discharge plate, so that the included angle is less than the angle of the gear side gap, and the lubricating grease can be attached to the gear during subsequent lubrication process, to ensure uniform feeding of the equipment and reduce excess or insufficient conditions.

The invention discloses an automatic test system and an automatic test sequence framework for a spacecraft. The system is characterized in that an automatic test sequence framework used for describing the automatic test of the spacecraft is defined, and the automatic test sequence framework is used for realizing the automatic test of the spacecraft through the following modules, the module comprises a sequence configuration sub-module, an automatic sequence execution sub-module, a result monitoring sub-module and a device-ground interface sub-module; and the sequence configuration sub-module is used for configuring and describing test steps of a test item by adopting the automatic test sequence framework to form an automatically executed test sequence. According to the invention, the ground test system for the automatic test of the spacecraft is realized by designing the automatic test sequence framework of the spacecraft, so that the test sequence is automatically executed, the data is automatically interpreted, the probability of errors introduced by human factors is reduced, and the overall test efficiency is greatly improved.

The invention relates to the technical field of medical literature data processing and artificial intelligence, and discloses a random contrast test (RCT) bias risk automatic evaluation method and system, and the method comprises the steps: obtaining RCT literature data containing a text, a table and a flow chart, and a RoB2 evaluation problem set; a problem reconstruction module injected through medical knowledge; performing position decision and multi-modal coordination analysis on the RCT literature through a multi-modal document analysis module; the reconstructed evaluation problem and the analyzed context information are input into a multi-expert cooperation module, cooperative reasoning is performed through a multi-reasoning unit, results are fused through a decision unit, and item-level, field-level and overall bias risk evaluation results are generated. The invention also constructs bias risk entry level and domain level data sets for supporting the training and verification of the method. The system comprises a data acquisition module, a problem reconstruction module, a document analysis module and a collaborative evaluation module, all the modules work cooperatively, automatic evaluation of RoB2 whole-process bias risks is achieved, and the system can be applied to scenes such as evidence-based medical research, system evaluation and clinical research quality control.

This invention discloses a method and related apparatus for diagnosing intercooler cooling efficiency, relating to the field of vehicle fault diagnosis. The method includes: finding the benchmark intercooler cooling efficiency corresponding to the current vehicle operating condition based on a pre-determined benchmark intercooler cooling efficiency table; determining vehicle dynamic aging compensation parameters based on the current vehicle operating condition and accumulated key parameters of vehicle operation; using these compensation parameters to compensate the benchmark intercooler cooling efficiency to obtain a predicted intercooler cooling efficiency value; when the current intercooler cooling efficiency is less than the predicted intercooler cooling efficiency value, calculating the difference between the predicted intercooler cooling efficiency value and a preset efficiency change range as a dynamic efficiency threshold; and comparing the current intercooler cooling efficiency with the dynamic efficiency threshold to determine whether there is a risk of intercooler failure. The determination process of the dynamic efficiency threshold in this invention considers the current vehicle operating condition and the vehicle dynamic aging compensation parameters, thus effectively reducing the occurrence of false positives and false negatives.

The utility model relates to fruit picking technical field, and disclose a kind of high fruit picker, including annular, the inside one side of annular is fixedly connected with mounting bracket, the one side of mounting bracket is equipped with threaded hole, the top of mounting bracket is threadedly connected with blade, the bottom of annular is fixedly connected with anti-falling net, the bottom of anti-falling net is fixedly connected with air bag, the one side of air bag is fixedly connected with inflation port, the one side of inflation port is fixedly connected with plug, one end of anti-falling net is fixedly connected with circular support, the bottom of circular support is fixedly connected with base, the bottom of base is fixedly connected with ground insertion.This high fruit picker is set by setting anti-falling net, air bag, plug, circular support and ground insertion, without picking one fruit each time to be picked down and placed fruit picker, avoid the time wasted by frequent lifting picker, greatly improve picking efficiency, more fruit picking work can be completed in shorter time, satisfy the demand of large-scale fruit picking of agriculture.

The application discloses a monitoring instrument and an implantable sensor thereof. The monitoring instrument comprises a housing assembly, an implantable sensor, a guide needle and a circuit board assembly. The implantable sensor is connected with the housing assembly, the guide needle is arranged in the housing assembly and is used for driving at least part of the implantable sensor to be inserted into a human body. The circuit board assembly is arranged in the housing assembly and is signal-connected with the implantable sensor. The implantable sensor comprises a conductive layer, an insulating layer and a sacrificial layer, and the conductive layer and the insulating layer are arranged alternately. The implantable sensor has a connecting area connected with the housing assembly, and the sacrificial layer is arranged in a laminated mode in the connecting area. When the implantable sensor is subjected to an acting force due to human body activities or the like, the sacrificial layer is used for being damaged by the acting force at a position adjacent to the conductive layer and the insulating layer under the action of the external force, thereby playing a role of protecting the conductive layer and reducing the probability of affecting signal transmission due to the fracture of the conductive layer.

The present application relates to prefabricated template technical field, and disclose a kind of segmental beam prefabricated template equipment for ocean engineering construction, including main body and two side molds, the bottom of main body is fixedly connected with two support frames, the bottom of side mold is fixedly connected with rectangular plate.The baffle is further slid upward, can directly tighten the gap generated due to side mold offset, this dynamic sealing of gap, can reduce the impact on side mold due to concrete falling when pouring and the fluid pressure generated by concrete to two side molds, cause small amplitude offset between side mold and main body, resulting in the existence of gap and grout leakage between side mold and main body, improve the flatness between segmental beam when forming, the convenience of post-removing formwork and the forming efficiency of segmental beam.

The invention relates to the technical field of tunnel engineering, and discloses a karst area tunnel gushing water treatment construction method which comprises the steps that drainage pipes are installed on the two inner side walls of a tunnel in advance correspondingly, and the drainage pipes are located on the lower portion of the tunnel; when water gushing occurs on the inner side wall of the tunnel, a fixed base is installed on the inner side wall of the tunnel; the sealing cover sleeving the drainage tube and the fixed base are sealed and closed, so that the fixed base and the sealing cover define a sealed cavity; a grouting pipeline is connected between the sealing cavity and the grouting pump in a sealed mode, and grouting materials are injected into the sealing cavity through cooperation of the grouting pump and the grouting pipeline; along with continuous increase of the grouting material in the sealing cavity, the grouting material in the sealing cavity penetrates through one or more groups of grouting rings to grout all the grouting holes; the situation that the grouting material overflows during grouting can be effectively avoided, and sufficient grouting can be conducted on a water gushing area; and the conditions of gaps or non-uniform grouting are reduced.

This utility model discloses a coffee brewing device, including an outer tank and an inner tank fixedly disposed inside the outer tank. The space between the outer and inner tanks is used to hold water. A connecting shaft is disposed inside the inner tank, and multiple stirring rods are fixedly disposed on the outer surface of the connecting shaft. One end of each stirring rod is connected to the interior of the connecting shaft. A gas supply pipe is fixedly disposed on the top of the outer tank. This utility model relates to the field of coffee production technology. This coffee brewing device heats the water between the outer and inner tanks via an electric heating element. The generated steam enters the hollow stirring rods through the gas supply pipe, drive rod, and connecting shaft, and is ejected from the vent, directly acting on the material in the inner tank. This dual heating method of "internal steam injection + external water bath" avoids the heat loss of traditional external heating, making the material more evenly heated in all areas, significantly reducing local overheating or underheating, and improving the quality stability of the coffee brew.

The utility model belongs to the technical field of detection fixture, specifically is a kind of battery package sealing gasket specification detection fixture, including multiple mainboards, multiple vice plates and fixing device, multiple vice plates are respectively located in the lateral wall of multiple mainboards;Fixing device is arranged on the surface of multiple mainboards and multiple vice plates, and fixing device includes placing plate, and placing plate is located on the surface of mainboard and vice plate, and the surface of placing plate is fixedly connected with two support blocks, the surface of multiple mainboards and multiple vice plates is equipped with four limiting devices, and limiting device includes limiting plate, and limiting plate is sleeved on the surface of mainboard and vice plate, two elastic strips are inserted in the inner surface of limiting plate, two elastic strips are respectively located in the upper and lower ends of vice plate, the surface of elastic strip is fixedly connected with clamping strip, and clamping strip is inserted in the inner surface of limiting plate;By setting the whole device, the position of mainboard and vice plate can be fixed, and the situation that mainboard or vice plate is affected by detection in detection process is reduced.