53results about How to "Time-consuming and labor-intensive solution" patented technology

The invention discloses a traceability anti-counterfeiting management method for artistic paintings, and belongs to the technical field of traceability anti-counterfeiting, and the method specifically comprises the steps: endowing each artistic painting with a 12-bit unique serial number, and uploading the serial numbers to a cloud platform for management; the serial numbers are randomly divided into X groups of Y-bit numbers, and each group of numbers is mapped to gray values under different gray levels A, B and C according to own numerical values to be displayed; in the transportation process, positioning information of the transportation vehicle is collected in real time to generate a transportation track, and the transportation track is bound with the serial number and uploaded to the cloud platform; a purchaser can inquire a transportation track by inputting a serial number or upload a serial number photo to verify authenticity; the system judges whether the serial number display in the photo is consistent with the gray value display of the set value according to the division of the serial number and the gray mapping, so as to prompt a certified product or a counterfeited product; according to the invention, through a multi-verification mechanism, the anti-counterfeiting efficiency and accuracy of the artwork are effectively improved.

The invention relates to the technical field of general image data processing or generation, in particular to a soybean germplasm resource high-throughput measurement method based on image recognition, and the method comprises the steps: obtaining a correction image of a target measurement object; based on the corrected image, pod contour image parameters and grain contour image parameters are extracted, and size correction is carried out on the image; calculating a pod length parameter, a grain length parameter, a pod width parameter and a grain width parameter based on the corrected image; obtaining a pod width change curve based on the pod width parameter; calculating the pod number based on the pod width change curve; extracting colors based on the corrected image to obtain pod color data and grain color data; and verifying a pod length parameter, a grain length parameter, a pod width parameter, a grain width parameter, pod color data and grain color data based on the decision coefficient and the root mean square error. The problems that in the prior art, time and labor are consumed, and precision is low are solved.

The invention relates to a method for predicting internal and external wind pressure of a perforated low building group, which comprises the following steps: firstly, based on a wind tunnel test, establishing a layout rule low building group internal and external wind pressure database considering building interference and perforating influence at the same time; secondly, dividing the perforated low building group into three perforated categories based on the database; when sufficient wind tunnel test data is not provided, the trepanning category is judged according to working condition parameters, and a reasonable internal and external pressure determination method is selected; and finally, based on the obtained internal and external wind pressure data, performing machine learning training to obtain an internal and external wind pressure prediction model for the low building group with any layout. The built method for predicting the internal and external wind pressure of the low building group can avoid inaccurate disaster loss assessment caused by blindly using an unsteady Bernoulli equation to calculate the internal and external pressure of the building, and can also avoid resource waste caused by blindly using a wind tunnel test or a numerical simulation method to determine the internal and external pressure of the building; and the wind disaster loss analysis of the low building group can be efficiently realized.

The invention provides an assembled building block model generation method and device, equipment and a storage medium, and the method comprises the steps: obtaining a source picture and a to-be-mapped model rendering graph, and generating an initial mapping rendering graph according to the source picture and the to-be-mapped model rendering graph through a deep learning diffusion model; taking the initial chartlet rendering image as a target chartlet rendering image, and carrying out matting processing on the target chartlet rendering image to obtain a matting bitmap; and taking the matting bitmap as a projection map, and carrying out projection mapping on the projection map according to a preset block structure of an assembled building block model so as to realize automatic mapping of the assembled building block model and obtain the assembled building block model after mapping is completed. According to the method, the deep learning technology and the image processing technology are combined, the full-automatic generation process from user input to the final chartlet model is achieved, the efficiency and quality of building block chartlet design are remarkably improved, and the problem that time and labor are consumed in a traditional manual design method is solved.

The utility model belongs to the technical field of screen exchangers, and discloses a backwashing screen exchanger which comprises a screen exchanger body, a telescopic screen exchanger main shaft body is installed in the screen exchanger body, a residue storage cavity is formed in one side of the screen exchanger main shaft body, a movable screen block capable of being popped up is installed in the residue storage cavity, and the movable screen block is connected with the screen exchanger main shaft body. A filtering net piece is mounted on the movable net block; the stabilizing assembly comprises a sliding groove formed in the movable net block and an abutting block rotationally installed in the sliding groove; through the arrangement of the stabilizing assembly, the filtering net piece can be stably attached to the movable net block, the filtering net piece can be prevented from being separated, and therefore the problems that an existing filtering net piece is prone to being separated from the movable net block due to shaking in the moving process, a user needs to place the filtering net piece repeatedly, and use is inconvenient are solved. And therefore, the working efficiency of the screen exchanger is improved.

The invention discloses a line segmentation processing method and system based on distribution network topology and a medium, mainly relates to the technical field of line segmentation, and is used for solving the problem that a power distribution network cannot be automatically segmented. Comprising the following steps: traversing line topology data again when traversing switch type equipment data sets contain all switch type equipment data sets, and dividing the line topology data into a plurality of initial segmented line data by taking switch type equipment as a breakpoint; identifying and obtaining initial segmented line data of the empty line segment and the tail end switch single-family line segment, combining the initial segmented line data with corresponding previous initial segmented line data, and updating to obtain segmented line data; and obtaining operation unit information corresponding to each node data in the segmented line data, and splitting the segmented line data based on the operation unit information to obtain final segmented line data.

The invention discloses an automatic generation method and system for a substation system configuration description file, and belongs to the technical field of substation design. According to the method, various configurations of the substation system configuration description file can be automatically generated, the time-consuming and labor-consuming problems of IED equipment integration, communication subnet configuration, instantiation description updating, optical cable information configuration and the like in the current substation system configuration description file are solved, and the digitization level in the design debugging stage is effectively improved; and the workload of subsequent configuration of the substation system configuration description file in the project is reduced, the integration efficiency of the substation system configuration description file in the project practice can be improved, and the manual workload is effectively reduced.

The utility model relates to the field of hot stamping devices, in particular to a hot stamping device for leather production. The technical problems that according to an existing hot stamping device for leather production, leather is generally cooled in a natural cooling mode after hot stamping is finished, time is wasted, when a hot stamping film needs to be used for assisting hot stamping, the hot stamping film or the leather needs to be manually placed in an assisting mode, time and labor are wasted, the working efficiency is low, and the production cost is high are solved. Compared with a traditional hot stamping device for leather production, the hot stamping device for leather production comprises the workbench, the first winding assembly, the hot stamping assembly, the cooling assembly, the second winding assembly, the hot stamping table and the foot columns, leather can be rapidly cooled after leather hot stamping is completed through the cooling assembly, time and labor are prevented from being consumed by natural cooling, and the production efficiency is improved. The first winding assembly and the second winding assembly are arranged and can be used for winding the leather and the hot stamping film correspondingly, automatic winding and unwinding of the leather and the hot stamping film can be achieved under the driving action of the first driving motor and the second driving motor, and the working efficiency can be greatly improved.

The invention relates to the technical field of terminal equipment, in particular to a self-service terminal with an OCR (Optical Character Recognition) function, which comprises a terminal machine, a sliding plate, a supporting rod, an electric rotating wheel and the like, a power supply is arranged in the terminal; the lower part of the terminal is slidably connected with a sliding plate; the sliding plate is fixedly connected with a plurality of supporting rods; each supporting rod is provided with an electric rotating wheel. The electric runner is connected with a power supply. Through cooperation of the sliding plate and the supporting plate, a user can select the treading height according to the height of the user, so that the pedal cannot be set to be high, the problem that balance is not easy to keep when the user only needs to be slightly heightened uses the high pedal is solved, the pedal is intelligently controlled to stretch out and retract, and the user experience is improved. Therefore, the problems of virus infection and the like caused by direct contact between the user and the pedal are avoided, and the user can operate the pedal conveniently due to intelligence, so that the burden of the user for handling business is prevented from being increased.

The utility model discloses an improved ladle cover of a steel ladle roaster, which comprises a ladle cover assembly, a first cover plate and a second cover plate, the ladle cover assembly is mounted on the steel ladle roaster, and the steel ladle roaster can seal and bake tilting steel ladles and plug rod bottom pouring steel ladles by replacing the first cover plate and the second cover plate. The steel ladle roaster comprises a base, a rotary lifting device, a supporting arm and a roasting temperature control device, a burner is arranged at one end of the upper portion of the supporting arm, an air blower, a gas pressure control device and counterweight iron are arranged at the other end of the upper portion of the supporting arm, the rotary lifting device is connected between the base and the supporting arm, and the gas pressure control device comprises a burner, an ignition gun, a gas pipe and an air pipe. The upper portion of the burner is communicated with a burning torch and a gas pipe, and the side face of the burner is communicated with an air pipe and an air blower. According to the improved ladle cover of the steel ladle roaster, the steel ladle roasting efficiency and quality are improved, and the improved ladle cover has the advantages of being high in production efficiency, safety and reliability.

This utility model relates to the field of urban rail vehicle component processing technology, and discloses a bending and forming device for aluminum alloy parts of urban rail vehicles. The device includes a frame, a material support platform fixedly mounted on the upper end of the frame, a downward hydraulic rod fixedly mounted on the upper end of the frame, and a downward pressure plate fixedly connected to the lower end of the hydraulic rod. A rotating bending hydraulic rod is mounted on the lower end of the frame, and a bending plate is rotatably connected to the upper end of the hydraulic rod. A switching mechanism is provided inside the downward pressure plate, which changes the concave shape of the material by switching the shape of the contact point with the material. This bending and forming device for aluminum alloy parts of urban rail vehicles, by setting a switching mechanism inside the downward pressure plate and using a switching motor to drive the central shaft to rotate, can easily switch the contact between the arc-shaped contact rod and the right-angle contact rod with the material, thereby changing the concave shape of the material. Compared with traditional devices, this eliminates the need to replace the entire contact component or even the mold.

The embodiment of the present invention discloses a training method, device, equipment and medium for a log error judgment model, which is applied to the field of deep learning. The training method includes: obtaining each target link log of a task link; determining the field error result and the broken link error result of the target link log according to the field value and field type of the target link log, and generating an error label corresponding to the target link log according to the field error result and the broken link error result of the target link log; constructing a training set according to the target link log of the task link and the corresponding error label, and using the training set to train a link log error judgment model. The link log error judgment model trained by the method of the embodiment of the present invention can improve the detection efficiency of log errors, and by improving the accuracy of log error detection, it can also accurately detect whether the log is correlated with other logs, thereby improving the accuracy of log correlation detection.

The invention discloses a gantry crane for hoisting steel frame components. The invention relates to the technical field of cranes and comprises a hydraulic push rod, one end of which is provided with a square sleeve plate; a circular concave shell, which is used to cover and resist the two ends of the hoisted steel frame components, and the top of the circular concave shell is provided with a top square plate; a top long plate, which is used to support and connect the parts, and a protective mechanism is fixedly connected to the inner side of the circular concave shell. The gantry crane for hoisting steel frame components provides circular concave shells on both sides of the steel frame components to cover and resist the two ends, so as to prevent batches of steel frame components from tilting due to shaking force or sliding out and falling from the side when moving, which may cause safety hazards. When the circular concave shell moves, a limiting long rod penetrating one side thereof is used to slide and limit it, so as to prevent the inserted steel frame components in the circular concave shell from becoming unstable in connection with the hydraulic push rod due to the influence of gravity when the weight of the steel frame components gradually increases.

The camellia oleifera fruit shell breaking and screening device comprises a shell breaking assembly, a separating assembly and a screening assembly, the shell breaking assembly comprises a box body, the shell breaking assembly further comprises a material stirring roller rotationally connected to the upper portion of an inner cavity of the box body, and a plurality of strip-shaped grooves are evenly formed in the periphery of the side face of the material stirring roller; one end of the material stirring roller is connected with a cam divider, the shell breaking assembly further comprises a pressing plate which is in sliding fit with the interior of the top end of the box body and located over the material stirring roller, a shaft rod is in sliding fit with the lower portion of the interior of the pressing plate, and the exterior of the shaft rod is rotationally connected with two shell breaking cutters; the two shell breaking cutters are symmetrically distributed below the two sides of the pressing plate, and the cross section of each shell breaking cutter is triangular. Through the shell breaking assembly, broken shells are large in size, complete and few in chippings, so that the tea seed screening efficiency is improved, and through a changeable screen of the screening assembly, the screen replacement efficiency is improved.

The utility model discloses sewage treatment equipment for makeup brush production, which belongs to the technical field of sewage treatment and comprises a bottom plate, a sedimentation tank is connected onto the bottom plate, a support column is arranged in the sedimentation tank, a ladder is connected onto the support column, a cleaning device is slidably connected into the sedimentation tank, a flushing device is arranged in the cleaning device, and the flushing device is connected onto the ladder. The cleaning device comprises two fixing plates, electric hydraulic rods are arranged in the fixing plates, and connecting rings are connected to the lower portions of the electric hydraulic rods. According to the sewage treatment equipment for cosmetic brush production, by arranging an electric hydraulic rod, a connecting ring and a scraping plate, when the inner wall of a sedimentation tank needs to be cleaned, the electric hydraulic rod is started, the electric hydraulic rod drives the connecting ring to move, the connecting ring drives the scraping plate to move, and at the moment, the scraping plate cleans the inner wall of the sedimentation tank; the sludge layer on the inner wall of the sedimentation tank is quickly and efficiently removed, so that the problem of time and labor consumption of a traditional manual cleaning mode is avoided.

The utility model relates to the technical field of roller water-removing machines, in particular to a roller support for a roller water-removing machine, which comprises a fixing frame, universal wheels, an electric telescopic rod and an arc-shaped groove, the universal wheels are fixedly mounted at the bottom end of the fixing frame, a material receiving disc is fixedly mounted at the bottom end in the fixing frame, and a connecting rod is fixedly connected to the right side of the bottom end in the fixing frame. A sleeve is installed on the periphery of the connecting rod in a sleeving mode, an electric telescopic rod is fixedly installed on the left side of the sleeve, and a handle is fixedly installed on the left side of the top end of the fixing frame. And meanwhile, manual material taking is not needed, it is effectively avoided that hands need to stretch into the roller to take materials during discharging, inconvenience is caused, and high-temperature danger exists, more stable supporting force can be provided, the portability and stability of the device are greatly improved, and certain popularization value is achieved.

The utility model relates to the technical field of building decoration, and discloses a ceiling structure convenient to disassemble and assemble, which comprises six suspenders, a keel frame, six threaded holes and a metal plate, the tops of the suspenders are connected with a wall body through expansion bolts, the keel frame is movably connected to the bottoms of the suspenders, and the threaded holes are formed in the top of the keel frame. Through cooperative use of the threaded hole, the metal plate, the mounting groove, the clamping groove and the positioning assembly, the push plate moves to drive the rotating plate to rotate around the positioning rod as the center, the rotating plate rotates to extrude the inclined surface on the extrusion groove, then the extrusion plate can be driven to move, and the extrusion plate moves to drive the clamping block to be separated from the clamping groove. The metal plate can be rapidly disassembled subsequently, and the problems that when a suspended ceiling is installed, the metal plate is directly fixed to the keel through screws or rivets, when a room needs to be disassembled and decorated, a plurality of self-tapping screws and rivets need to be disassembled with the help of tools, and the process is time-consuming and labor-consuming are solved.

The utility model discloses an annual week number batch processing tool, which relates to the technical field of tire processing, and comprises a supporting rod, the right end of the supporting rod is rotatably connected with a rotating rod, the rotating rod penetrates through the supporting rod, the left end of the rotating rod is fixedly connected with the output end of a rotating motor, the other end of the rotating rod is fixedly connected with a rotating sleeve, and the rotating sleeve is fixedly connected with a rotating shaft. A clamping motor is fixedly connected to the surface of the right end in the rotating sleeve, a clamping mechanism is arranged at the output end of the clamping motor, a discharging mechanism is fixedly connected to the lower end of the supporting rod, and a storage mechanism is arranged at the lower end of the discharging mechanism. By means of the clamping mechanism, the annual week movable blocks in the machining process are fixed and clamped, the annual week movable blocks are not prone to falling off in the machining process, the annual week movable blocks after machining are collected through the blanking mechanism and enter the storage mechanism to be stored through the blanking mechanism and the storage mechanism, and the situation that workers collect single parts one by one, and time and labor are consumed is avoided.

The invention discloses a board card processing device, and relates to the technical field of board card processing, and the board card processing device comprises a workbench, a transfer mechanism, a cutting module and a polishing module. Wherein the workbench is used for fixing a board card, the transferring mechanism is movably arranged on the workbench and used for sliding in the first direction, the cutting module is arranged on the transferring mechanism and used for cutting the board card when moving in the first direction, the grinding module is connected with the transferring mechanism, and the grinding module and the cutting module are sequentially arranged in the first direction; the grinding module comprises a grinding roller assembly, and the grinding roller assembly is used for being in edge contact with the cut board card and rotating when the cutting module cuts the board card so as to grind the edge. According to the board card processing device, the technical problems that time and labor are consumed and the production efficiency is low due to the fact that a polishing procedure needs to be carried out after the board card is cut are solved.

The present disclosure relates to the field of construction machinery testing, and particularly relates to a working device for pipe jacking machine pipeline system testing and a detection method. The working device comprises a circulating water pumping system, a spraying system and a sensor system, which can be pre-arranged on a test base, is simple to operate, convenient and fast, solves the problems of large investment and time-consuming and labor-consuming in actual tunneling and cutting tests, and solves the problem that a large area of site is not necessarily suitable for actual tunneling and cutting tests.

The present invention provides a method and system for determining a high-risk medical insurance settlement list under DRG payment. The method mainly performs determination through four steps. Step one, the collected basic data is calculated; Step two, based on the calculation result, the regulatory high-risk rule library is screened; Step three, the regulatory high-risk liquidation list is determined; Step four, when the determination result meets the preset requirements, the regulatory high-risk liquidation list is output. Through the above method, the workload of manual determination is greatly reduced, and the detection rate of illegal medical insurance settlement lists is improved.

This utility model discloses a backflush device suitable for plate-fin heat exchangers in air separation cold boxes, including low-pressure and high-pressure plate heat exchanger backflush assemblies. The low-pressure assembly includes a first purge vent valve after the molecular sieve and a nitrogen pressurization valve at the top of the lower tower (connected to the emergency nitrogen pipeline network); the high-pressure assembly includes a main pipeline control valve at the compressor outlet, a second purge vent valve after it, and a backflush inlet branch pipe with a root valve before the main pipeline control valve (connected to the pipeline before the high-pressure air outlet throttling valve of the heat exchanger); this device eliminates the need for cold box sand removal, removes impurities through reverse pressurization and purging, solves the blockage problem, shortens start-up time, reduces energy consumption, and improves the safety and economy of the air separation unit.

The utility model relates to the technical field of positioning and clamping devices, in particular to a positioning and clamping device of a grooving machine. According to the technical scheme, the device comprises a supporting base located below the grooving machine and further comprises a rotating disc, and the rotating disc is rotationally connected into the supporting base; the rotating disc is fixedly connected with a positioning mechanism for positioning the rotating disc; the top of the rotating disc is fixedly provided with a clamping mechanism which can conveniently and rapidly clamp a cutting piece. When clamping is needed, the supporting disc ascends to drive the top of the cutting piece to abut against all the abutting blocks with the set height, so that the clamping effect is achieved, when the cutting piece needs to be taken out, the rotating handle is rotated reversely, the supporting disc descends, and the cutting piece is conveniently taken out; the problem that time and labor are consumed due to the fact that a plurality of clamping pieces needing to be manually adjusted are adopted for clamping in a traditional positioning and clamping device is solved, and then the working efficiency of users is improved.

The invention discloses a business processing plug-in generation method and device, equipment, a medium and a product, and relates to the technical field of big data processing. Comprising the steps of obtaining an initial business processing plug-in corresponding to a business type based on the business type of a target business; analyzing the target business to obtain metadata information and processing logic corresponding to the target business; configuring a target data processing component for the initial business processing plug-in based on the data source metadata and the processing logic; configuring a target data output component for the initial business processing plug-in based on the output metadata; configuring a target service scheduling component for the initial service processing plug-in based on the scheduling metadata; and determining a target business processing plug-in for processing the target business according to the target data processing component, the target data output component and the target business scheduling component. According to the technical scheme, the target business processing plug-in can be automatically generated, the maintainability and the flexible adaptability of the target business processing plug-in can be improved, and the stability of a business system can be improved.

The invention relates to the technical field of automatic drawing, in particular to a method and system for automatically generating AutoCAD drawings of chemical equipment, and the method comprises the steps: a data input part which comprises the input of design data and the strength check calculation data; drawing components, including which components of the drawing are determined, and the positions of all the components are determined; the drawing code generation part is used for generating codes of all the parts according to the structural data and the position data of all the drawing components and by combining national standards, industrial standards and enterprise regulations related to chemical drawing; in the drawing part, an AutoCAD secondary development program is automatically operated, codes generated by the drawing code generation part are read in, and a complete drawing is automatically generated and stored; in the drawing modification part, if the engineering project is a new engineering project, parameters in the engineering project can be directly modified by selecting an engineering project of a similar type; if the engineering project is a completed engineering project, the AutoCAD can be opened for modification; and the drawing database is a link of each part. Manual drawing is replaced by automatic drawing of the chemical equipment drawing, the drawing drawing workload is reduced, and the drawing drawing period is shortened.

The reinforcing structure for special foundation treatment comprises a foundation body and a buffer column, motors are fixedly installed on the two sides of an inner cavity of the foundation body, threaded rods are fixedly installed at the output ends of the motors, threaded sleeves are installed on the front surfaces of the threaded rods in a threaded mode, a connecting rod is fixedly connected to one side of each threaded sleeve, and the other side of each threaded sleeve is fixedly connected with the buffer column. Supporting plates are fixedly installed at the ends, away from each other, of the connecting rods, ground thorns are fixedly installed at the ends, away from each other, of the supporting plates, a polished rod is fixedly installed at the bottom of the ground base body, sliding rings are slidably installed on the two sides of the front surface of the polished rod, and the tops of the sliding rings are fixedly installed at the bottoms of the supporting plates; a bearing is fixedly installed at the middle end of the bottom of an inner cavity of the foundation body. According to the technical scheme, the problem that time and labor are consumed when multiple groups of ground piles are driven manually can be solved, the advantage of automatically reinforcing a foundation is achieved, and the problem that the foundation sinks after a long time is avoided.

The invention provides a playing mode switching method and audio and video playing equipment thereof. The playing mode switching method comprises the following steps: the audio-video playing equipment establishes an index corresponding table of a plurality of preset keyword data and a plurality of playing modes, plays audio-video content, captures a frame image aiming at the audio-video content and generates inquiry information according to the frame image to inquire a network artificial intelligent model; the network artificial wisdom model returns the first keyword data to the audio and video playing device according to the inquiry information, and the audio and video playing device analyzes and compares the first keyword data with the index corresponding table to judge whether to execute playing mode switching operation or not so as to adjust audio and video playing parameter setting of the audio and video content.

The invention particularly relates to a camera for real-time picture transmission. The camera comprises a telescopic rod, a universal joint (5) installed on the telescopic rod, a rotating base (4) installed on the universal joint (5), a camera body (1) installed on the rotating base (4) and a storage display device. The storage display equipment is in hotspot connection with the camera (1); the rotary base (4) is used for performing horizontal fine adjustment on the camera (1) according to a horizontal fine adjustment instruction sent by the storage display equipment; and the camera (1) is used for photographing or recording according to a photographing instruction sent by the storage display equipment, generating a real-time picture and sending the real-time picture to the storage display equipment for display and storage. The device state of the unreachable area of the nuclear power plant is quickly confirmed through real-time picture transmission, time and labor are saved, and personal injury risks do not exist.

The utility model discloses crystal flower pork low-temperature forming equipment, and relates to the technical field of crystal flower pork production. The crystal flower pork low-temperature forming equipment comprises a freezing box, a forming mechanism and a material lifting mechanism, a base is fixedly installed on the outer surface of one side of the freezing box, the bottom of the freezing box is flush with the bottom of the base, a limiting groove is formed in the top of the base, and a mold attached to the limiting groove is placed on the base; an inlet and outlet corresponding to the mold in size is formed in the side, close to the mold, of the freezing box, the material lifting mechanism is arranged on the mold and comprises a material lifting plate, and the bottom of the inner side of the mold and the inner walls of the front side and the rear side of the mold are each jointly provided with a set of embedding grooves. According to the crystal flower pork low-temperature forming equipment, through cooperation of the mold and the material lifting mechanism, after pork in the mold is frozen and formed, the pork can be directly lifted and taken out from the bottom of the inner side of the mold, convenience and rapidness are achieved, and the practicability of the equipment is improved.

The utility model provides a bi-directional workpiece clamping device which comprises a base, a driving part, a sliding block part and a clamping part, the base serves as an installation foundation of the driving part, the sliding block part and the clamping part, and the driving part drives the clamping part to move forwards or backwards through the sliding block part; the clamping part comprises a first side plate and a second side plate which are intersected and connected; when the clamping part moves forwards, the first side plate is in contact with one side of a workpiece, and the second side plate is in contact with the other side of the workpiece; and when the clamping part moves backwards, the first side plate and / or the second side plate are / is separated from the workpiece. The clamping part comprises the first side plate and the second side plate, the first side plate and the second side plate clamp the workpiece from different directions, the problem that most existing clamps have one-way clamping force is solved, then the problem that the workpiece is prone to loosening and upwarping in the using process is reduced, and the machining precision and efficiency are improved advantageously.