4008results about How to "Quick release" patented technology

The invention relates to the field of vacuum coating, in particular to a crystal hot-fix rhinestone vacuum coating device and a crystal hot-fix rhinestone vacuum coating process. The invention aims to solve the technical problem that the coating quality is reduced in the next coating process due to the fact that original coating materials are easy to accumulate and remain on the surface and in the heating container in the long-term high-temperature state and coating process of the heating container. In order to solve the technical problem, the vacuum coating device for the crystal ironed diamonds comprises a main box body, vacuum equipment is arranged at one end in the main box body, the vacuum equipment comprises a tank body, a plating material evaporation device is arranged in the tank body, the plating material evaporation device comprises a fixing column, the bottom of the fixing column is fixedly connected with the tank body, and the bottom of the fixing column is fixedly connected with the tank body. Threads are arranged outside the lower ends of the fixing columns. The evaporation disc can be replaced through the coating material evaporation device, and the replaced evaporation disc is cleaned, so that the phenomenon that the previous coating raw materials are easy to remain and accumulate around the evaporation disc in the long-term coating process is avoided.

The invention relates to the technical field of industrial robots, and particularly discloses an auxiliary fixing device for an industrial robot, the auxiliary fixing device comprises a device body, a bottom plate and a robot body, the device body and the bottom plate are connected through a damping mechanism, a mounting groove is formed in the top of the device body, and the robot body is mounted in the mounting groove; a mounting mechanism is arranged in the device body, rotating plates are rotationally mounted at the four corners of the top of the device body through rotating shafts, supporting mechanisms are arranged at the tops of the multiple rotating plates, and protection mechanisms are arranged on the four side faces of the device body. According to the device, the mounting mechanism is arranged in the device body, so that the robot body can be quickly mounted and fixed; and when the robot body needs to be replaced or maintained, the robot body can also be quickly disassembled, so that the working efficiency of the robot body is conveniently improved, and the robot body is better used by people.

The present invention relates to the technical field of varistors, and specifically to a multi-layer chip varistor, comprising a protective shell, a cover plate being detachably mounted on the top of the protective shell, a resistor body being mounted in the protective shell; the resistor body being a multi-layer chip varistor; a first slide, the slide being arranged below the longitudinal sides of the protective shell, a longitudinal positioning plate for longitudinally positioning the resistor body being arranged above the slide; transverse positioning plates being respectively arranged on the transverse sides of the protective shell, the transverse positioning plates positioning the resistor body transversely in the protective shell, and the resistor body being limited in multiple directions through the structure of a top plate, a longitudinal positioning plate, a transverse positioning plate and a stop block, even if the rubber pad is aged and deformed due to the increase in the use time, the resistor body can still be effectively limited in the protective shell to prevent the resistor body from moving in the protective shell and affecting the normal use of the resistor body.

The utility model relates to the technical field of royal jelly manufacturing, in particular to a freeze-drying device for manufacturing royal jelly freeze-dried powder buccal tablets, which comprises a freeze-drying box, a working cavity is arranged on the upper side in the freeze-drying box, a plurality of freeze-drying material boxes are arranged in the working cavity, feeding grooves are arranged in the freeze-drying material boxes, and the feeding grooves are communicated with the working cavity. Clamping blocks are slidably clamped to the outer walls of the two sides of the feeding groove, forming plates are arranged on the sides, close to each other, of the two clamping blocks, a plurality of forming holes are formed in each forming plate at equal intervals, a pressing plate is arranged at the top of each forming plate, and demolding pressing blocks are fixedly connected to the positions, corresponding to the forming holes, of the bottom face of each pressing plate. According to the royal jelly powder piece forming device, the freeze-drying material box, the clamping block, the feeding groove, the forming plate, the forming holes, the pressing plate and the demolding pressing block are arranged in a matched mode, royal jelly powder pieces solidified in the forming holes of the forming plate can be rapidly demolded, demolding is easy, and meanwhile the demolding time is shortened.

The invention relates to the technical field of gear machining, in particular to planetary reducer gear machining grinding equipment which comprises a workbench, a U-shaped sliding groove is formed in the upper end of the workbench, a mechanical arm is slidably connected to the inner side wall of the U-shaped sliding groove, and a clamping structure is welded to the upper end of the U-shaped sliding groove. A clamping structure is fixedly installed at the upper end of the mechanical arm, an inner gear ring is clamped to one side of the clamping structure, a connecting column is fixedly installed at the upper end of the mechanical arm, a positioning column is fixedly installed at the end, away from the mechanical arm, of the connecting column, and a rotating ring is rotationally connected to the outer side wall of the positioning column. According to the abrasive disk correcting device, the abrasive disk is pushed by the push rod, so that the abraded abrasive disk is quickly popped out, then the most locking rod is corrected through reverse rotation of the cross-shaped rotary shaft, meanwhile, a new abrasive disk is clamped on the locking rod, meanwhile, the abrasive disk can be switched by rotating the rotary ring, and the working efficiency is improved.

The invention relates to a message sending method and device, equipment and a storage medium, and relates to the technical field of multimedia. According to the method, through one-key operation, the message input box is called out, and the currently played first image frame is subjected to screenshot and then is filled into the message input box, so that the first image frame can be quickly published without performing manual screenshot operation on the first image frame by a terminal login object, the operation steps are reduced, and the user experience is improved. And the man-machine interaction efficiency is improved. Moreover, an editing control of the first image frame is displayed on the message input box, and the editing control is triggered to enter an editing interface of the first image frame to edit the first image frame, that is, an editing function for the first image frame is also provided on the message input box, so that the first image frame can be edited quickly, and the user experience is improved. The interaction path when the first image frame is edited is shortened, and the man-machine interaction efficiency when the comment message including the image is published is further improved.

The invention relates to the technical field of pouring-type dry-type transformer coil air passage arrangement, in particular to a pouring-type dry-type transformer coil air passage arrangement device which comprises a coil holder, an expansion component is mounted on the coil holder, and two outer rotary rings with the adjustable distance are connected to the expansion component. A rear baffle disc is rotatably mounted on the coil holder, a linear driving module is fixedly mounted on the coil holder, a front baffle disc which can be driven to rotate and move is in transmission connection with the linear driving module, a group of arrangement mechanisms which are arranged in a circumferential array manner is mounted between the rear baffle disc and the front baffle disc, and a driving module which is in transmission fit with the arrangement mechanisms is mounted on the coil holder. When the air passage arrangement device is used, on one hand, a formed coil can be rapidly and electrically discharged, rapid switching between the sealing state and the ventilation state of an air passage structure during coil pouring is achieved, and on the other hand, rapid mounting and dismounting of the air passage plate can be achieved when the air passage arrangement device is used.

The utility model discloses a cable erecting device which comprises a bottom plate, a stand column, a first vertical rod, a second vertical rod, a pay-off assembly and a wire guide wheel. The multiple stand columns are vertically installed on the bottom plate, the first vertical rod is connected to one stand column located on one side of the bottom plate in an inserted mode, and the pair of second vertical rods is connected to the two adjacent stand columns located on the other side of the bottom plate in an inserted mode. The pay-off assembly is arranged on the first vertical rod, and a disc-shaped cable is erected on the pay-off assembly in a matched mode; and the wire guide wheels are rotatably mounted between the pair of second vertical rods, the pair of wire guide wheels are arranged at intervals, and a wire guide gap is formed between the pair of wire guide wheels, so that the cable penetrates through the wire guide gap. The utility model relates to the technical field of cable storage equipment, and can solve the problems that in the prior art, a disc-shaped cable is poor in size adaptability, cannot be quickly disassembled and assembled and is unstable in paying off.

A high-altitude operation construction vehicle with hoisting and cross arm assisting functions comprises a crane system, a caterpillar band chassis, a swing mechanism, a telescopic arm, a fly arm, a quick change device, a working platform and a cross arm assisting tool, the swing mechanism is installed on the caterpillar band chassis, the fixed end of the telescopic arm is hinged to the swing mechanism, the crane system is installed on the telescopic arm, and the fly arm is installed on the cross arm assisting tool. The flying arm is installed on the telescopic arm through a conversion device, the flying arm can be converted between a storage state and a working state through the conversion device, the flying arm is fixed to the fixed end of the telescopic arm in the storage state, the flying arm is fixed to the telescopic end of the telescopic arm in the working state, and the working platform is detachably connected with the flying arm through a quick change device. The cross arm auxiliary tool is installed on the working platform. The crane can be used as a crane and can also be connected with the working platform through the fly jib, and the cross arm is mounted through the cross arm auxiliary tool on the working platform, so that the operation intensity and risk of workers are greatly reduced, and the construction cost is reduced.

The utility model discloses a portal crane with a cleaning function, which comprises a portal frame, a track and a trolley, the track is fixedly arranged on the portal frame, the trolley is arranged on the track, and the portal crane is characterized in that movable frames are arranged at two ends of the trolley, cleaning structures are fixedly arranged on the movable frames, and the cleaning structures are arranged on the movable frames. The cleaning structure comprises a first cleaning roller, a second cleaning roller and a scraper, and the multiple moving frames are arranged, so that the track is cleaned through the cleaning structure; a containing structure is arranged on the movable frame, the containing structure comprises a plurality of containing plates, a plurality of fixing rods and a plurality of springs, the containing plates are detachably connected with the movable frame, the movable frame is connected with the trolley through bolts, and therefore sundries can be contained conveniently.

The utility model discloses a shearing structure capable of solving the problem of hair winding of a cyclone filter device, which comprises the cyclone filter device provided with a filter screen; one end of the dust cup is connected to the cyclone filter device, and the filter screen is located in the dust cup; the cutting part is connected with the outer surface of the filter screen, the cutting part is connected to the dust cup, and when the dust cup and the cyclone filter device are separated and drawn out, the cutting part cuts off hair wound on the filter screen. Compared with the prior art, the dust cup is provided with the cutting part, when the dust cup is detached, the dust cup and the cyclone filtering device are in a relative motion state, the cutting part can cut off hair wound on the cyclone filtering device, the cyclone filtering device does not need to be detached, more convenience is achieved, and the use experience of a user is improved.

The present invention discloses a wiring device for replacing an electric energy meter without power outage, comprising a base for installing the electric energy meter, a connecting base being provided at the lower end of the base, a terminal post being provided on the upper side of the connecting base, a wiring hole being provided on the lower side of the connecting base, a connecting plate being provided in the connecting base, two short-circuits being provided on the connecting plate, a first screw being provided in the connecting base, a through hole being provided in the connecting plate, a first nut matching the first screw being provided in the through hole, the first screw being rotated to drive the connecting plate to move so as to connect the short-circuit with the circuit, slide grooves being provided on both sides of the base, a slide rod being installed in the slide groove, a first reset spring being provided at the bottom of the slide rod, a clamping device being provided on the slide rod, a limit device being provided at the bottom of the slide groove, and when the short-circuit is connected with the circuit, the connecting plate controls the limit device to release the slide rod, and the wiring device can realize meter replacement without power outage.

The invention discloses a coal grinding device, which belongs to the technical field of grinding and comprises a mounting frame, a rough grinding mechanism and a fine grinding mechanism. Wherein a plurality of limiting holes are formed in the mounting frame; the coarse grinding mechanism comprises a coarse grinding box, the bottom edge of the coarse grinding box is connected with the mounting frame, and the coarse grinding box is used for performing coarse grinding treatment on coal; the fine grinding mechanism comprises a fine grinding box, a first mounting frame is mounted on the edge of the top of the fine grinding box, and the first mounting frame is detachably connected with the mounting frame through a clamping mechanism and a limiting hole and is used for performing fine grinding treatment on the coal subjected to coarse grinding treatment; by means of the design, the rough grinding mode and the fine grinding mode of coal can be rapidly adjusted, and the coal caking condition in the fine grinding process can be prevented.

The invention discloses a battery and an electric device. The battery comprises a plugging member; the shell is provided with a storage cavity and a first through hole, and the storage cavity is communicated with the first through hole; the glue layer is arranged between the plugging piece and the shell, the two sides of the glue layer are bonded to the plugging piece and the shell respectively, and the plugging piece seals the first through hole; the expansion piece is arranged between the plugging piece and the shell, the two sides of the expansion piece are connected to the plugging piece and the shell respectively, and the expansion piece is configured in the mode that when the expansion piece is heated to expand, the expansion force of the expansion piece is larger than the bonding force of the adhesive layer. The battery provided by the invention can effectively and quickly release pressure.

The utility model discloses a universal tool for pulling out a bearing seat, which relates to the technical field of bearing maintenance and comprises a hydraulic jack and a bearing seat, a seat dismounting tool is arranged between the hydraulic jack and the bearing seat, one side of the seat dismounting tool is in threaded connection with the outer surface of the hydraulic jack, and the other side of the seat dismounting tool is in threaded connection with the bearing seat. The universal tool for pulling out the bearing seat comprises a seat cover, a seat cover is fixedly connected to one side of the seat cover, a connecting flange is fixedly connected to the other side of the seat cover dismounting tool, the surface of the connecting flange is connected with the bearing seat through a clamping assembly, a torsion bar is assembled in the bearing seat, and one side of the end of the torsion bar is sleeved with a threaded protective sleeve. One end of the seat dismounting tool is in threaded connection with the jack, the end of the torsion bar is sleeved with the threaded protective sleeve, the other end of the seat dismounting tool is connected with the bearing seat, the hydraulic pump is pressurized till the seat assembly is separated from the torsion bar, operation is easy and fast, the overhauling efficiency is higher, the device is suitable for pulling out bearing seats of different shapes and sizes, universality is high, and use is flexible.

The utility model discloses a tree transplanting device which comprises a supporting bottom plate, the top of the supporting bottom plate is fixedly connected with a containing box, the top of the containing box is provided with a containing groove, the top of the supporting bottom plate is symmetrically and fixedly connected with lateral supporting rods, a fixing plate is fixedly connected between the two lateral supporting rods, and the top of the fixing plate is provided with a sliding groove. Adjusting blocks are symmetrically and slidably connected to the interiors of the sliding grooves, connecting rods are fixedly connected to one sides of the adjusting blocks, and connecting frames are fixedly connected to the tops of the connecting rods; the tree transplanting device has the advantages that by arranging the containing box, the containing groove, the two-way lead screw, the adjusting block, the connecting rod and the arc-shaped limiting plate, the functions of clamping, fixing and protecting transplanted trees are achieved, and the transplanted trees are convenient to transplant; and by arranging the connecting blocks, the springs, the sliding rods, the sliding blocks, the mounting blocks, the mounting bases and the inserting grooves, the function of quickly mounting and dismounting the arc-shaped limiting plates is achieved, the arc-shaped limiting plates are conveniently replaced, and use is convenient.

The invention relates to an ion type rare earth ore tailing sandy land soil improvement structure and an improvement method, and belongs to the technical field of ecological restoration. The ion type rare earth ore tailing sandy land soil improvement structure sequentially comprises a humus layer, a surface soil layer and a subsoil layer. The subsoil layer comprises rare earth ore tailing sandy land soil and a slow-release modifier; the surface soil layer comprises the rare earth ore tailing sandy land soil, a slow-release modifier and a quick-acting modifier; the slow-release improver comprises agricultural and forestry wastes, and the quick-acting improver comprises livestock and poultry manure, lime and a compound fertilizer. According to ecological function characteristics of the soil, aiming at physical characteristics and nutrient content of the soil and specific rare earth and aluminum toxicity pollution of a mining area, the soil layer is remolded by using different dosages and different types of improvers, so that the restoration of a local damaged soil ecological system is accelerated, and the ecological function restoration of the soil in the rare earth ore tailing sand land is realized.

The offshore wind power platform tidal energy vibration reduction power generation device is in a circular truncated cone shape, is fixedly arranged on a sunken pile in a sleeving mode and comprises a bottom disc and a top disc, the diameter of the top disc is larger than that of the bottom disc, the two sides of the top disc are connected with a working platform on the upper portion of the sunken pile through cables, and a connecting structure is arranged between the top disc and the bottom disc. An annular locking structure is coaxially arranged at the top of the top disc and sleeves the sunken pile, horn-mouth-shaped flow guide structures are uniformly arranged on the side wall of the connecting structure, an impeller is arranged on the inner side of the connecting structure, an impeller mounting shaft is fixedly connected with a generator, and the generator is connected into a power storage device of the wind power platform. The effect of reducing the vibration amplitude of water flow impact on pile sinking is achieved, tidal energy is utilized for power generation, the height of the power generation device can be adjusted according to the rising tide condition, and the power generation efficiency is maintained.

The invention relates to a universal auxiliary frame for a water elasticity ship model pool test and a use method. The universal auxiliary frame comprises a frame, the movable horizontal cross beam is connected with the frame supporting end face through a bolt in a horizontally adjustable manner; the vertical supporting rod is used for supporting the ship model and ensuring the stability of the ship model; the transverse gradienter and the longitudinal gradienter are respectively arranged at different positions of the frame and are used for ensuring the horizontal state of the frame. The frame is compact and reasonable in structure and convenient to operate, the frame is specially customized for the sectional type ship model, the structural safety and stability of the ship model in the hanging, transporting, equipment installing and testing processes are effectively improved through a firm and accurate supporting structure, and meanwhile in the testing process, the test efficiency is improved. The precision measurement system arranged in the frame can accurately monitor the swing period and the horizontal state of the ship model, and ensures the accuracy of the ballast position and the accurate correspondence between the ship model and the real ship mass distribution and the swing period.

The utility model discloses an ultrahigh-cleanliness purification workshop for chip packaging, and relates to the technical field of purification workshops. The workshop ventilation device mainly comprises a workshop wall body, a ventilation pipeline, a ventilation fan, a filtering piece and an installation piece, the ventilation pipeline is horizontally arranged and penetrates through the workshop wall body, the ventilation fan and the filtering piece are both installed in the ventilation pipeline, the filtering piece comprises an installation frame, and a filtering plate is installed between the inner walls of the installation frame. The number of the installation parts is two, the installation parts are arranged on the two opposite sides of the ventilation pipeline respectively, each installation part comprises a U-shaped clamping plate, an opening of each U-shaped clamping plate is arranged on one side of the ventilation pipeline in a clamped mode, two limiting plates are fixed to the outer side wall of each U-shaped clamping plate, the installation frame is located between the two limiting plates, and a control plate is fixed to the outer side wall of each U-shaped clamping plate. Through the design of the U-shaped clamping plate and the limiting plate, the filter element can be quickly mounted and dismounted, so that the time required for replacing the filter screen is greatly shortened, and the production efficiency is improved.

The invention relates to the technical field of filling materials, in particular to a full-solid-waste high-flow-state mine filling material, slurry containing the full-solid-waste high-flow-state mine filling material and a preparation method. The invention provides an all-solid-waste high-flow-state mine filling material which comprises the following components in parts by mass: 130-160 parts of a cementing material, 20-50 parts of an admixture, 300-400 parts of aggregate and 1-12 parts of an additive, the additive is prepared from the following components in parts by weight: 1 to 10 parts of exciting agent, 0.05 to 0.1 part of water-retaining thickening agent, 0.1 to 0.5 part of water reducing agent and 0.01 to 0.5 part of coagulation accelerator. According to the filling material, various solid wastes are used as main raw materials and matched with specific additives, so that synergistic utilization of different solid wastes is realized, and the green filling material with low carbon emission, low energy consumption and low cost is obtained. Slurry of the filling material has the high flow state maintaining characteristic of 3-4 h, the purpose of being capable of being pumped for a long time is achieved, and the slurry can be gradually coagulated within 6-8 h and reach the demolding self-standing standard.

The utility model belongs to the technical field of batteries, and particularly relates to a battery monomer, a battery and electric equipment. The battery monomer comprises a shell, wherein an anti-explosion valve is arranged at one end of the shell in a first direction; the battery cell is arranged in the shell, and the tab-free end of the battery cell corresponds to the anti-explosion valve; the flexible breathable gasket is arranged in the shell and is positioned between the tab-free end of the battery cell and the anti-explosion valve; the flexible breathable gasket comprises a first breathable layer and a second breathable layer which are sequentially arranged in the first direction. Wherein the first breathable layer is in contact with the tab-free end, and the second breathable layer is arranged on the side, facing the anti-explosion valve, of the first breathable layer and covers the anti-explosion valve. According to the explosion-proof valve disclosed by the utility model, the flexible breathable gasket plays a role in buffering, supporting and ventilating the battery cell, prevents the diaphragm from being extruded and deformed, can enable gas to pass through to quickly release air pressure when the explosion-proof valve is opened, is better in breathable uniformity, is favorable for enhancing the stability of airflow, prevents larger airflow fluctuation in a local area, and improves the safety of the explosion-proof valve. And meanwhile, the safety of the battery is improved.

The utility model relates to the technical field of geological exploration, and discloses a geological exploration soil sampling device which comprises a bottom plate, the top end of the bottom plate is fixedly connected with a base, the top end of the right side of the base is fixedly connected with first hinged frames which are opposite front and back, and the inner sides of the first hinged frames are rotationally connected with first threaded sleeves; the inner side of the first threaded sleeve is in threaded connection with a first threaded rod, the top end of the first threaded rod is rotationally connected with a second hinge frame, the top end of the second hinge frame is fixedly connected with a supporting plate, the bottom end of the supporting plate is rotationally connected with evenly-distributed third hinge frames, and the third hinge frames are fixedly connected with the base. According to the device, the top end structure is driven by the supporting plate to turn over so as to be folded, the size of the device is reduced, and meanwhile the device can adapt to different geological conditions by adjusting the drilling angle.

The ultrasonic flowmeter module comprises a module body and a cover plate, the module body is in a cuboid shape, the left end and the right end of the module body are two transducer installation areas respectively, the middle of the module body is a control module circuit board installation area, and the cover plate is arranged on the upper surface of the module body; each transducer mounting area comprises a cylindrical barrel, a closed blind hole is formed in the bottom of the barrel, the upper part of the barrel is closed through a cover plate, a through hole I is formed in the position, corresponding to the transducer, of the cover plate, a plurality of screw holes I are formed in the periphery of the barrel, and the control module circuit board mounting area comprises a cuboid frame body; a cavity is arranged between the frame body and the cover plate, the cavity is communicated with the barrel bodies on the two sides respectively to form an inverted-concave-shaped communicated cavity, the two ends of the control module circuit board extend into the barrel bodies respectively, a second through hole is formed in the upper surface of the cover plate at the corresponding position of the frame body, and a cylindrical terminal groove is formed in an opening of the second through hole. The terminal grooves protrude out of the surface of the cover plate. Through the design of the blind holes, the energy converter is prevented from being in direct contact with gas or liquid in the pipe section, and the waterproof performance of the module is improved. And the transducer is connected with the circuit board through a reasonable structural design, so that the exposure of a circuit is reduced, and the stability of a product is enhanced. And through a process of pouring glue for several times, the integration of the module is enhanced, and the waterproof effect is better.

The invention relates to the technical field of powder metallurgy product production, and discloses a blowing type demolding device and method for a powder metallurgy product. The blowing type demolding device comprises a supporting seat, the output end of a motor is connected with a first bevel gear, and a blowing mechanism is fixed to one side of the supporting seat; the blowing mechanism is connected to the bottom of the first bevel gear in an engaged mode. According to the blowing type demolding device for the powder metallurgy product, after injection molding operation is completed, a second piston, a movable frame and a sealing plug move downwards, a mold pipeline and a blowing channel can be conveniently communicated, meanwhile, a rotating disc rotates, and all extrusion blocks extrude a pull rod in turn; the movable frame, the pull rod and the knocking block move left and right back and forth under the extrusion of the extrusion block and the jacking action of the second compression spring, so that the mold pipeline is conveniently and repeatedly knocked, a product is completely separated from the inner wall of the mold pipeline, subsequent rapid demolding is facilitated, an air blowing channel automatically blows air upwards, automatic demolding is achieved, and the product can be prevented from being damaged.

The utility model discloses a modular cylindrical spotlight, which relates to the technical field of spotlights and comprises a middle ring, a heat dissipation cup is fixedly mounted at one end of the middle ring, a straight-lighting or swinging swing ring is arranged on the outer wall of the heat dissipation cup, and a reflection cup is clamped on the inner wall of the swing ring; when the outer wall of the heat dissipation cup is provided with a straight-lighting swing ring, the swing ring is clamped to the outer wall of the heat dissipation cup, when the outer wall of the heat dissipation cup is provided with a swinging swing ring, the inner wall of the swing ring is provided with a shaft groove, the side wall of the middle ring is fixedly connected with a middle shaft matched with the shaft groove, and the middle shaft is rotationally connected into the shaft groove through a mounting shaft. According to the technical scheme, through the structural arrangement of the swing ring, a user is allowed to adjust the irradiation angle of lamplight according to actual needs, and the adaptability of the lamp and the user experience are greatly improved. And main components such as the LED light source, the reflection cup and the surface ring adopt modular design and can be independently mounted and dismounted, and when a certain component needs to be replaced, the whole lamp does not need to be replaced, so that the maintenance cost is reduced.

The invention discloses a preparation method of a super-hydrophobic nano coating, and relates to the technical field of nano coatings, and the preparation method specifically comprises the following preparation steps: step 1, under the temperature condition of 20-50 DEG C, ultrasonically dispersing 1.5-3 parts of modified nano silicon dioxide in 60-80 parts of deionized water, adding 1-4 parts of modified graphene oxide, stirring at the rotating speed of 800-1000 r / min for 15-30 min, and then adding 1-3 parts of a dispersing agent, and stirring at the rotating speed of 800-1000 r / min for 20-30 min; adding 0.8-1.5 parts of a tin dioxide core / shell structure, and continuously stirring for 24-72 hours to obtain a super-hydrophobic nano coating solution; and 2, coating the surface of the cleaned substrate with the super-hydrophobic nano coating solution by adopting a spraying, brush coating, dip coating or spin coating method, and naturally airing to obtain the super-hydrophobic nano coating. According to the invention, hydrophobic groups are introduced to the surface of nano silicon dioxide, long-chain organic groups are connected to the surface of silicon dioxide, and the organic groups can reduce the surface energy of the coating and increase the contact angle of water drops on the surface of the coating, so that the hydrophobicity of the coating is improved.

The invention relates to the technical field of gastroscope auxiliary frames, in particular to a mask-integrated neck posture auxiliary fixing frame for a painless gastroscope, which comprises a lower jaw supporting piece and a chest supporting piece rotationally connected with the lower jaw supporting piece, the fixing mechanism comprises a mounting belt detachably arranged outside the lower jaw supporting piece, a tightening belt is arranged outside the mounting belt, and a laryngeal mask is arranged on the end face of the tightening belt; the angle adjusting mechanism comprises a rotary knob and is used for controlling the rotation angle and the rotation direction between the lower jaw supporting piece and the chest supporting piece, the lower jaw supporting piece and the chest supporting piece fix the lower jaw of the patient, the angle of the head and the trunk is adjusted to the proper angle, and the clamping jaw rotates in one direction and is rapidly detached. The rotation angle and the rotation direction between the lower jaw supporting piece and the chest supporting piece are adjusted through the rotary knob, the tightening belt drives the pressing wheel to rotate to adjust the tightness of the laryngeal mask, the laryngeal mask is further fixed and limited, meanwhile, the installation steps are simplified, and the use threshold is lowered.

The invention discloses a multi-cavity balloon blood vessel dilation catheter which comprises a catheter body. The multi-cavity balloon is arranged on the catheter in a sleeving manner; wherein the multi-cavity balloon comprises a balloon body, the balloon body comprises at least two cavities, the appearance of the multi-cavity balloon body is in a concave-convex shape, and all cavity channels of the balloon body are communicated with cavity channels filled with a pressure relief medium; each cavity of the balloon is filled, and the pressure of the pressure relief medium is balanced; on the circumference of the section of the blood vessel dilation section, the value of radial dilation supporting force borne by the balloon on the blood vessel wall is inconsistent, the radial dilation supporting force F borne by the balloon attached to the blood vessel is maximum, and the non-attached area of the balloon and the blood vessel is not subjected to the radial dilation supporting force. The blood vessel inner wall which is not subjected to radial expansion supporting force and the blood vessel inner wall which is subjected to the maximum radial expansion supporting force are easy to tear or crack, so that the purpose of blood vessel expansion is achieved, and the blood vessel expansion effect is effectively improved; and the balloon sunken part is used for blood to pass through when the multi-cavity balloon dilates a blood vessel.