65results about How to "Solve the cumbersome" patented technology

The invention relates to the technical field of polypeptide preparation, in particular to cyclic hexapeptide as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting fluorenylmethoxycarbonyl-N6-trimethylsilylethoxycarbonyl acyl-L-lysine with 2-chlorotrityl chloride, and removing the protection of trimethylsilylethoxycarbonyl, so that amino is connected to dichloro resin; the preparation method comprises the following steps: taking fluorenylmethoxycarbonyl-O-tert-butyl-L-threonine, fluorenylmethoxycarbonyl-L-proline, fluorenylmethoxycarbonyl-L-alanine, fluorenylmethoxycarbonyl-aspartic acid-4-tert-butyl ester and fluorenylmethoxycarbonyl-L-leucine as a starting point, and then removing amino protection of terminal amino acid and carboxyl protection of the first amino acid; and carrying out condensation reaction and peptide cutting reaction to obtain the cyclic hexapeptide. The preparation method disclosed by the invention is simple in steps and simple and convenient to operate, the use of tetraphenylphosphine palladium is avoided, and the defects of low efficiency, high cost and low yield of the traditional liquid-phase cyclization method and solid-phase cyclization method are overcome.

The invention belongs to the technical field of power transmission line maintenance, and discloses an unmanned aerial vehicle electricity testing auxiliary ground wire hanging and dismounting device which comprises an unmanned aerial vehicle body and a first hook installed on the unmanned aerial vehicle body and further comprises a non-contact electroscope and a communication module which are both installed on the unmanned aerial vehicle body. According to the scheme, the unmanned aerial vehicle body is operated by an operator to drive the first hook to lift the whole mounting frame assembly, the frame body is firstly kept static under the gravity of the frame body, a power transmission cable is clamped between the frame body and the pressing block through resetting of the pressing block, and then the rope is driven by the operation motor to be paid off; meanwhile, the end of the connecting fastener moves downwards to fasten the grounding wire with the connecting fastener, and then an operator lifts the connecting fastener and the grounding wire by pulling the other end of the rope and makes contact with the end part of the guide rod, so that the problems that the grounding wire is hung on the power transmission line in a manual climbing manner, which is relatively tedious and low in safety are solved.

The invention relates to the technical field of waterproof roll manufacturing, and discloses impermeable waterproof roll manufacturing equipment which comprises a main body frame, and a conveying mechanism is installed on one side of the interior of the main body frame and used for conveying various materials at the same time; the bonding and rolling mechanism is arranged in the middle of the main body frame and is used for carrying out bonding and rolling treatment on various materials; the positioning mechanism is arranged on one side of the bonding and rolling mechanism and is used for shearing and positioning the rolled material coiled material; the rolling and conveying mechanism is arranged on one side of the bubble eliminating mechanism and is used for carrying out rolling and conveying treatment on the bonded materials; and the winding mechanism is arranged on the other side of the main body frame and is used for carrying out winding treatment on the treated coiled material. By arranging the bubble eliminating mechanism, the problem that bubbles are generated in the bonding process is solved, and meanwhile by arranging the shearing mechanism to be matched with the positioning mechanism, positioning shearing of the coiled material is achieved.

The invention discloses a cold head container for a liquid-helium-free superconducting magnet and a using method of the cold head container, and belongs to the technical field of superconducting magnetic resonance equipment.The cold head container comprises a first-level container heat transfer block and a second-level container heat transfer block, a sleeve is arranged above the first-level container heat transfer block, and the bottom end of the sleeve is fixedly communicated with a through hole of the first-level container heat transfer block; an upper flange is fixedly installed at the top end of the sleeve, a connecting flange is fixedly installed above the upper flange, a plurality of evacuation sealing valves are arranged on the peripheral side of the connecting flange and communicate with the interior of the sleeve, and a plurality of evenly-distributed flexible cold guide plates are fixedly connected to the peripheral side of the container primary heat transfer block. A connecting pipe and a corrugated pipe are arranged between the container primary heat transfer block and the container secondary heat transfer block; the using method of the cold head container comprises the steps that S1, the magnet is pre-cooled; s2, dismounting the pre-cooling assembly; s3, mounting the refrigeration component; according to the cold head container, the pre-cooling time of the magnet can be remarkably shortened, and meanwhile, the refrigeration part is more convenient to replace.

The improved numerical control lathe relates to the technical field of numerical control lathes and comprises a lathe body, a protective door is movably connected to the outside of the lathe body, a spindle device is fixedly connected to the right side of the inner wall of an operation cavity, and moving plates are fixedly connected to the front side and the rear side of the lower portion of the inner wall of the operation cavity respectively. A moving assembly is movably connected to the outer wall of the moving plate, lead screws are fixedly connected to the front side and the rear side of the middle of the operation cavity correspondingly, a fixing device is movably connected to the top of the moving assembly, a cleaning assembly is arranged above the left side of the lathe body, and a collecting box is arranged at the left end of the lathe body. An operation panel is arranged on the front face of the lathe body. The driving motor drives the first fixing plate to move along the limiting sliding groove, the scraping plate is attached to the surface of the slope groove all the time in cooperation with the elasticity of the spring, and therefore chippings on the slope groove are scraped into the collecting box.

The utility model relates to the technical field of thermal management, and discloses a radiator with an insert substrate, which comprises an insert substrate and radiating inserts, the top of the insert substrate is fixedly connected with a plurality of mounting seats, the bottom of each radiating insert is provided with a fixing component, the fixing component comprises a plurality of mounting columns, and the mounting columns are fixedly connected with the mounting seats. The multiple installation columns are fixedly connected to the bottoms of the heat dissipation insertion pieces, at least one rubber ring is fixedly connected to the outer side of each installation column, multiple installation holes are formed in the top of the installation base, grooves are formed in the installation holes, and heat dissipation fins are fixedly connected to the two sides of each heat dissipation insertion piece. According to the utility model, a sliding connection mode of the mounting columns and the mounting holes is adopted, and interference fit is formed through the rubber rings and the grooves, so that the functions of conveniently mounting and dismounting the heat dissipation insertion sheets are achieved. Compared with a traditional fixed installation mode, the design enables the heat dissipation inserting pieces to be rapidly replaced or adjusted, and the problem that the heat dissipation inserting pieces are tedious and time-consuming to replace in the prior art is solved.

This application discloses a trolley tilting fixture, belonging to the field of trolley assembly technology. It includes a pre-embedded frame; a rotating shaft rotatably connected to the top of the pre-embedded frame, with a tilting base fixedly connected to the middle of the rotating shaft. The tilting base is L-shaped and used to hold the vehicle frame; the tilting base is driven by an external force to tilt around the rotating shaft; and a clamping mechanism installed on the outside of the tilting base to fix the vehicle frame. The clamping mechanism includes an adjustment plate that slides on the tilting base. This application, by using a rotatable tilting base, solves the problem of the cumbersome need for tilting with a crane or hoisting equipment through the multi-area support and rotation of the vehicle frame by the tilting base. It achieves stable positioning of the vehicle frame during tilting, thus avoiding scratches on the paint surface of the vehicle frame. The hollow square tube design prevents the entire vehicle frame from wobbling on the tilting base when installing casters later.

The utility model is used in the technical field of motorcycle foot prop, disclose a kind of antiskid foot prop structure of electric motorcycle, including fixed frame, the both ends outer surface of fixed frame is fixedly set with installation flange, the both lower end side surface of fixed frame is equipped with the rotating rotary lever, and the both ends outer surface of rotary lever is fixedly set with antiskid rod, the middle segment outer surface of rotary lever is fixedly set with slip rod, and the lower end of slip rod is equipped with the sliding slip cylinder that slides, the lower end of slip cylinder is fixedly connected with mounting bracket, and the both ends outer surface of mounting bracket is equipped with the rotating support wheel, the outside surface of fixed frame is fixedly set with limit cylinder.This antiskid foot prop structure of electric motorcycle is provided with the stepping point more in line with human force habit by setting stepping lever, compared with traditional pull type operation, cooperate the rotation characteristic of rotary lever, can be easily driven foot prop to spread by leg power, effectively solve the problem of great human consumption after carrying people and goods.

The utility model discloses an adjustable radome clamping device, and relates to the technical field of radome clamping devices. The device comprises a support and an operation plate, the operation plate is located at the top end of the support, first sliding grooves which are symmetrically distributed are formed in the upper surface of the operation plate, moving blocks which are distributed in a rectangular array are slidably clamped in the first sliding grooves, and vertical plates are fixedly arranged on the upper surfaces of the moving blocks. A clamping assembly is arranged on the surface of the vertical plate, a transverse rod rotates, the transverse rod drives a supporting rod to rotate, so that a clamping plate is opened or closed, the clamping plate clamps the four antenna housing bodies when working, the device clamps the antenna housing bodies under the action of an auxiliary motor, and through a first sliding groove formed in the upper surface of an operation plate, the clamping assembly can clamp the antenna housing bodies. According to the clamping device, the moving distance of the clamping assembly can be flexibly adjusted, so that the device can conveniently find corners needing to be clamped, the problem of complexity in the process of manually clamping the radome body is solved, and the clamping stability of the device is improved.

The utility model relates to a portable immune micro-fluidic detector, which comprises a detector body and is characterized in that the detector body comprises a shell, and a micro-fluidic chip reaction area, a reagent bag placing area, a liquid supply mechanism and a bag scratching mechanism capable of scratching a reagent bag are arranged in the shell. The detection instrument has the advantages that the micro-fluidic chip reaction area, the reagent bag placing area and the bag scratching mechanism are respectively and integrally arranged in the detection instrument, and the micro-fluidic chip reaction area and the reagent bag placing area can be respectively and detachably inserted through own sockets; rapid home immunodetection can be conveniently performed based on the micro-fluidic chip, the reagent grooves for placing the reagent bags are communicated through the connecting channels, and the bags are scratched one by one under the action of the bag scratching mechanism to perform multi-stage reaction, so that the sample adding speed can be increased, and the tedious problem caused by repeated sample adding can be avoided; and the size and the manufacturing cost of the detector can be reduced.

The utility model discloses a device suitable for extracting clear titaniferous solution, which comprises a vertically arranged settling tank, a space for storing acidolysis titaniferous solution and a settling agent is arranged in the settling tank, the upper end of the settling tank is opened, the acidolysis titaniferous solution is temporarily stored in the settling tank, and the height of the liquid level of the acidolysis titaniferous solution is smaller than that of the top of the settling tank. A vertically-arranged stirring structure is connected to the top of the settling tank, the lower end of the stirring structure is located in slurry obtained after acidolysis titaniferous liquid is settled, the two sides of the bottom of the outer wall of the settling tank are connected with a foundation, a liquid suction structure floats on the liquid level of the acidolysis titaniferous liquid, an extraction structure is arranged below the exterior of the settling tank, and the liquid suction structure communicates with the extraction structure through a conveying pipe. And the conveying pipe is made of a flexible hose, so that the problem that in the prior art, extraction of the primary titanium cleaning solution is relatively tedious is solved, and the problem that part of slurry is easy to extract while the titanium cleaning solution is extracted is also solved.

The application discloses a hub assembly high-compatibility automatic assembly production line and a method thereof. The production line comprises bearing part press-fitting devices for press-fitting a plurality of bearing outer rings in a hub in a spatial position sequence, bolt press-fitting devices for press-fitting a plurality of bolts on an outer wall of the hub, brake member assembly stations for assembling brake members and the hub, dynamic balance testing devices for elastically inserting and driving the bearing outer rings in the hub to rotate coaxially and measuring weight distribution of the hub, gear ring and oil seal press-fitting devices for press-fitting the gear ring and the oil seal synchronously, run-out testing devices for inserting and positioning the bearing outer rings in the hub, rotating against an outer wall of the driving brake member and measuring surface flatness of the brake member and assembly height of the gear ring, and a plurality of mechanical arms for reciprocating transfer between the devices. The application realizes high compatibility of the whole production line.

The application discloses a kind of based on deep separable convolution improved remote sensing image road extraction method and system, it is related to remote sensing image processing technical field.A kind of based on deep separable convolution improved remote sensing image road extraction system, including have: data acquisition module, tree crown shadow compensation module, model construction module, model training module, road extraction module, storage module and display module.The application is compensated by constructing tree crown translucent shadow compensation module, and the shadow attenuation priori graph generated based on radiation transmission physical model DART is fused with original image channel cascade, so that the model can understand the formation process of tree crown shadow from the physical mechanism level, effectively restore the occluded road information, solve the technical problems that traditional deep learning method lacks explicit modeling of translucent shadow, and it is difficult to distinguish real road dark area and shadow false dark area.

This invention relates to the field of path optimization technology, and proposes a method for optimizing robot inspection paths and rapid production changeover based on digital twins. The method includes: constructing a digital twin model of the physical inspection equipment; configuring the joint hierarchy and motion constraints of the visual inspection robot based on the robot's DH parameters; controlling the end effector of the visual inspection robot to move to the inspection point on the battery tray based on an inverse kinematics algorithm, generating a teaching point sequence and an initial inspection path; inputting the teaching point sequence into an improved ant colony algorithm, optimizing the initial inspection path by incorporating genetic mutation operations and a backtracking reset mechanism, obtaining the optimized path; driving the inspection equipment to execute the complete inspection process based on the optimized path, and verifying the feasibility of the flipping timing of the flipping positioner, the movement of the positioning fixture, and the coordination of the visual inspection robot's trajectory; and converting the optimized path into control commands and sending them to the inspection equipment.

The utility model discloses a laboratory waste liquid suction device which comprises a machine body, a negative pressure pump, a liquid collection bottle, an anti-overflow bottle and a liquid suction gun head. The negative pressure pump is arranged in the machine body, the air suction end of the negative pressure pump extends out of the machine body and is provided with a filter, the filter is sequentially connected with the anti-overflow bottle and the liquid collecting bottle through hoses, and the liquid collecting bottle is connected with the liquid suction gun head through a hose; the liquid suction gun head is a multi-channel liquid suction gun head or a single-channel liquid suction gun head; the machine body is provided with a control module and a power module, the negative pressure pump and the control module are electrically connected with an external circuit through the power module, the machine body is provided with a negative pressure adjusting module and a power switch, and the negative pressure adjusting module and the power switch are both electrically connected with the control module. The liquid suction gun head can be matched with a multi-channel liquid suction gun head, so that waste liquid in a plurality of test tubes can be extracted at one time, and the working efficiency is improved; meanwhile, water vapor and waste liquid entering the negative pressure pump can be greatly reduced through the anti-overflow bottle and the filter, and the service life of the device is prolonged.

The utility model provides a driving head counterweight dismounting tool, and relates to the technical field of mechanical equipment. The driving head counterweight dismounting and mounting tool comprises a first connecting piece used for being stably connected with a part to be dismounted or mounted; the second connecting piece is provided with a first surface, and the first connecting piece is connected to the first surface; the abutting part is perpendicular to the first surface and rotationally connected with the second connecting piece, and the first end of the abutting part is located on the side, provided with the first surface, of the second connecting piece; the first end can advance or retreat towards the second surface, opposite to the first surface, of the first connecting piece through rotation of the abutting part relative to the second connecting piece. According to the technical scheme, in the dismounting or mounting process, contact and separation between the first connecting piece and the to-be-dismounted part can be controlled by rotating the abutting part, and the technical problems that in the existing dismounting process, operation is inconvenient, the safety risk is large, and efficiency is low can be solved.

The invention relates to a compiling method and device of a target tool, equipment and a medium, and the method comprises the steps: obtaining compiling parameters provided by a user, the compiling parameters comprising one or more of the following parameters: an identifier of the target tool, a list file identifier recording each dependency package of the target tool, and a required cross compiling tool chain identifier; according to the compiling parameters, in a pre-configured library management module, obtaining a source code packet of the target tool, a source code of each dependent packet of the target tool and a cross compiling tool chain; the library management module comprises a package management library, a list library, a tool library and a cross compiling tool chain library; and compiling the source code of each dependent packet of the target tool and the source code packet of the target tool by utilizing a cross compiling tool chain to generate a binary file executable by the target tool. Therefore, the problem of cross-platform compilation in embedded system development is solved, automatic construction of the target tool is realized, and efficiency and accuracy of construction of the target tool are improved.

The utility model relates to the technical field of hoisting machinery, and particularly discloses a quick connecting structure for a landing leg and a lower cross beam of a portal crane, which comprises the landing leg, an operation opening is formed in the front surface of the landing leg, a fixing frame with holes is fixedly connected to the inner side wall of the operation opening, a locking cap is arranged in the fixing frame with holes, and the locking cap is fixedly connected with the lower cross beam of the portal crane. A connecting plate is arranged above the supporting legs, the stability of the connecting plate is ensured through the insertion matching of a connecting block, a limiting frame and a threaded locking rod with a fixing groove, a clamping groove and a connecting hole and the locking of a locking cap on the threaded locking rod, then the cross beam main body is placed on the connecting plate, and the connecting plate is fixed to the cross beam main body. According to the lower cross beam, the positioning pin and the clamping block are matched with the positioning opening and the connecting groove of the cross beam body, preliminary positioning is achieved, meanwhile, the positioning screw penetrates through the limiting insertion hole and is locked through the fastening cap, the reliability of connection is further ensured, and the problem that the lower cross beam is inconvenient to position, and consequently the installation process is tedious is effectively solved.

The utility model relates to the technical field of stage equipment, and discloses an LED (light-emitting diode) large screen with transverse movement adjusting capability, which comprises a screen body, a mounting plate and a support plate, the mounting plate is positioned on the rear side of the screen body, and the support plate is mounted on the front side of the mounting plate. Through cooperative use of the driving assembly and the sliding stabilizing assembly, a user starts the motor, the motor drives the transmission rod to rotate, the transmission rod drives the transmission wheel to rotate, the transmission plate moves through the rotating force of the transmission wheel, and the moving direction of the transmission plate is controlled through the rotating direction of the transmission wheel; the transmission plate drives the screen body to move through the supporting column, and the problems that most of existing LED display screens are installed on corresponding fixing supports through bolts, when the position needs to be adjusted, only structures originally used for fixing and installing can be detached and moved to new positions to be installed again, and the operation is tedious and complex are solved.

The embodiment of the present application discloses a cable defect location method, device and medium. Generate an incident signal corresponding to the cable to be detected, and obtain a reflected signal corresponding to the incident signal; wherein the incident signal is a linear chirp signal of a Gaussian envelope; determine the Gaussian rectangular window boundary corresponding to the reflected signal according to a preset boundary factor; determine the corresponding rectangular window through the Gaussian rectangular window boundary, and determine the energy distribution corresponding to the reflected signal based on the amplitude corresponding to the rectangular window, so as to filter out the signal cross terms corresponding to the reflected signal according to the energy distribution; obtain a cable defect location curve based on a preset cross-correlation function, the incident signal and the reflected signal after filtering out the signal cross terms, so as to determine the cable defect position according to the peak value in the cable defect location curve. The above method improves the accuracy of cable defect location.

The application discloses a kind of ointment applicators, the connecting part of fixed part and cover in the ointment applicator has elasticity, multiple fixed parts can be close to each other or away from each other, change the caliber, can be connected with different opening caliber ointment container, solve the problem of single compatibility of traditional smearing connector, reduce the use cost;And the application directly acts on ointment container, replaces the original sealing cover of ointment container, so that it is not necessary to frequently unscrew, screw ointment container cover, also no need to use cotton swab, scraping piece, finger and any auxiliary smearing medium, extrude ointment container can be out of medicine, directly through smearing head to complete smearing, the traditional medicine process is simplified from " open cover → take medium → dip ointment → smearing ointment → cover cover " multiple step operation to " extrusion out of medicine → direct smearing " two step operation, greatly reduce operation link, improve medicine efficiency, solve the problem of traditional medicine process cumbersome.

The utility model belongs to the technical field of roller machining, and particularly relates to a roller pump which comprises an installation bottom plate. The driving mechanism is arranged on the mounting bottom plate; the rack is arranged on the mounting bottom plate; the blanking tool pipe is of a tubular structure with two open ends and is arranged on the rack, and the upper side and the lower side of the middle of the blanking tool pipe are provided with receding openings communicating the inside and the outside; the upper material pressing wheel extends into the discharging tool pipe through the receding opening in the upper side, and the lower material pressing wheel extends into the discharging tool pipe through the receding opening in the lower side. The upper connecting shaft is connected with the upper material pressing wheel and is arranged on the rack through an upper bearing, the lower connecting shaft is connected with the lower material pressing wheel and is arranged on the rack through a lower bearing, the upper connecting shaft and the lower connecting shaft are respectively connected with the driving mechanism, and the driving mechanism drives the upper material pressing wheel and the lower material pressing wheel to rotate relatively through the upper connecting shaft and the lower connecting shaft. The device is applied to butt joint between the material arranging machine and a machine tool, the material arranging machine does not need to be erected very high, the problems caused by the fact that the material arranging machine is erected very high are solved, manual feeding is facilitated, and residual rollers in a hopper can be observed.

The embodiment of the present application relates to the field of data processing, and discloses a business allocation method, device, server and storage medium, the method comprising: obtaining business demand information of a target user, the business demand information including a target business type; obtaining the first location information of the target user, and determining a set of candidate business personnel for the target business according to the first location information; obtaining reference business information of each candidate business personnel, the reference business information including a reference business type and business personnel characteristics; determining the correlation between the target user and each candidate business personnel according to the target business type and the reference business type of each candidate business personnel, and determining the adjustment coefficient of each candidate business personnel according to the business personnel characteristics; determining the target business personnel of the target user according to the correlation and the adjustment coefficient. The efficiency and accuracy of business allocation can be effectively improved. The present application relates to blockchain technology, such as the above data can be written into the blockchain for use in scenarios such as business allocation.

This invention relates to the field of laser marking technology, and provides a control method and system for an aluminum rod laser marking machine. The method includes: identifying the contour, placement position, and height / undulation of the aluminum rod; real-time acquisition of the actual distance data between the surface of the marking area of ​​the aluminum rod and the laser head, and calculating the basic compensation amount of the laser focus based on the actual distance data; simultaneously compensating for the closed-loop system delay between the signal acquisition of the ranging module and the execution response of the XY-axis servo drive module; obtaining the final control parameters of the XY-axis dynamic displacement based on the basic compensation amount and the delay compensation; and transmitting the final control parameters to the XY-axis servo drive module to drive the laser marking module to perform XY-axis dynamic displacement, marking the aluminum rod in a non-contact manner. This invention enables precise control of the XY-axis servo drive module, achieving dynamic tracking and adhesion of the laser focus to the surface of the aluminum rod, which improves the versatility and adaptability of the equipment.

The drawing type carriage device comprises a motor home body, two detachable vertical plates are installed on the upper surface of the motor home body, the side faces, close to each other, of the two vertical plates are jointly and fixedly connected with a connecting rod, the outer surface of the connecting rod is fixedly connected with a first bed plate, and the outer surface of the first bed plate is fixedly connected with a second bed plate. A mounting assembly is mounted on the outer surface of the first bed plate. According to the drawing type carriage device for the motor home, through matched arrangement of the second bed plate, clamping blocks, clamping grooves, threaded holes, fastening bolts, threaded cylinders, adjusting bolts and grooves, the clamping blocks are clamped into the clamping grooves firstly, then the fastening bolts are installed into the threaded holes, the stability of the second bed plate is enhanced, and after installation is completed, the second bed plate is fixed through the threaded cylinders. The adjusting bolt is rotated to be parallel to the position of the first bed board, so that the second bed board is installed, the problem that the process of replacing the second bed board is tedious is solved, normal rest of a subsequent user cannot be affected, and the practicability of the device is improved.

The invention provides an onboard optical coupling device which is connected between two data processing devices. The onboard optical coupling device includes an optical waveguide having a plurality of alignment channel units and a plurality of waveguide channels. The first photonic device includes a plurality of first return channels and a first optical channel. The second photonic device includes a plurality of second return channels and a second optical channel. In the one-time alignment process, the multiple first optical channels and the multiple second optical channels are optically aligned with the corresponding waveguide channels, and meanwhile the first return channel and the second return channel are optically aligned with the alignment channel unit, so that the optical alignment efficiency is improved.

The present invention proposes an entity weight scoring method, system, electronic device and storage medium, and the method and technical scheme thereof include a standard library establishment step, setting a standard library, setting standard entity attributes, standard emotional states, and weight values ​​of the standard emotional states in the standard library; a data acquisition step, acquiring the original evaluation data of a product on an e-commerce platform; a data preprocessing step, filtering redundant information from the original evaluation data, and performing word segmentation processing; an entity processing step, performing entity level processing on the preprocessed original evaluation data, and establishing an entity emotion correspondence table according to the entity level processing result; and a scoring step, calculating the score of the product according to the entity emotion correspondence table and the standard library. The present invention can solve the problem that the existing entity weight scoring method does not make sufficient use of emotional states and is unscientific.

The drawing device comprises a base, the inner side of the base is fixedly connected with a first motor, the upper side of the first motor is fixedly connected with a lifting screw, the outer side of the lifting screw is in threaded connection with a lifting block, and the right side of the lifting block is movably connected with a drawing board. By arranging the lifting screw rod and the rotating rod, the lifting screw rod drives the drawing board to adjust the height up and down, and the rotating rod drives the drawing board to incline front and back, so that the angle of the drawing board can be adjusted conveniently, the phenomenon that the device is inconvenient to use due to difficult adjustment is avoided, and the adjustability of the device is improved; according to the mathematical modeling and drawing device, the clamping plates on the two sides can be driven to rotate, so that a drawing is clamped and loosened through the clamping plates, a user can replace the drawing conveniently, the use convenience of the device is improved, and the problems that an existing mathematical modeling and drawing device is tedious in drawing fixing and inconvenient to adjust are solved.

The application discloses a single-bicycle control method and system, relates to the technical field of wearable devices, and applies the single-bicycle control method to a wearable device.The method comprises the following steps: determining first charging information and single-bicycle identification information of a single bicycle to be controlled according to single-bicycle images under different angles; feeding back single-bicycle state information and second charging information according to the single-bicycle identification information by a single-bicycle control terminal; comparing the two charging information to determine target charging information; broadcasting the single-bicycle state information and the target charging information; sending a single-bicycle unlocking instruction according to the information feedback to the control terminal; and unlocking the single bicycle to be controlled by the single-bicycle control terminal.Through the above method, a brand-new intelligent interaction platform is provided for the single bicycle by using the wearable device and the single-bicycle control terminal, the problem that the user is inconvenient and tedious in operation during the use of the single bicycle is solved, a more intuitive and convenient operation mode can be provided for the user, and the use experience of the user is improved.