177results about How to "No damage" patented technology

The utility model discloses a foot bath basin with fixed plastic bag structure, including basin body, the basin body is equipped with the basin mouth, is equipped with the pressure bar for the down pressure plastic bag on the basin body upper surface near the basin mouth, and the pressure bar has elasticity, is equipped with the limiting piece on the basin body, and the limiting piece is used for positioning the pressure bar on the basin body. The utility model discloses a foot bath basin with fixed plastic bag structure is set up the pressure bar with elasticity on the basin body, and the plastic bag is fixed firmly in the foot bath basin through the pressure bar, and will not cause the breakage of plastic bag.

The application relates to a four-branch waterproof cable which comprises an outer sleeve, a main cable body arranged in the inner part of the outer sleeve, a first branch cable body arranged at one end of the main cable body, a second branch cable body arranged at the end of the first branch cable body away from the main cable body, four groups of first fixing ring blocks fixedly connected on a round plug, second fixing ring blocks detachably arranged in the first fixing ring blocks, the second fixing ring blocks being sleeved on the second branch cable body, and sealing structures arranged between the first fixing ring blocks and the second fixing ring blocks. The application can realize the quick disassembly of the main cable body, the first branch cable body and the second branch cable body, can replace cables with different lengths, can not damage the main cable body, the first branch cable body and the second branch cable body when the main cable body, the first branch cable body and the second branch cable body are separated, can be repeatedly used, can save resources, and can realize good sealing effect and good waterproof performance at the installation connection part of the main cable body and the second branch cable body.

The utility model discloses a kind of Type-C connectors with flexible torsional force protection, including connector base and Type-C connector joint;The connector base is connected between Type-C connector joint by rotating structure, so it has the function of flexible torsional force protection;The connector base is compressed with Type-C connector joint by cover, to prevent the connector base and Type-C connector joint from loosening.The utility model connector base is connected between Type-C joint by rotating structure, so that joint can rotate flexibly when being subjected to external force torsion, without damaging internal contact point;By the reset spring set, joint can automatically return to initial position after torsional force is removed, effectively protect connector internal component, enhance its service life.

The invention relates to a glass-based photoelectric volume pulse wave cover plate material as well as a preparation method and application thereof. The cover plate material comprises: a glass substrate; the annular structural part is embedded in the glass substrate; the annular structural member and the glass substrate are made of the same material; the glass substrate comprises the following components in percentage by mass: 0.1 wt%-0.2 wt% of BaO; 0.1 wt% to 0.6 wt% of PbO; 0.1 wt% to 0.7 wt% of Sb2O3; 25 wt%-61 wt% of SiO2; 16 wt% to 18 wt% of B2O3; 10 wt% to 15 wt% of Al2O3; 8 wt% to 12 wt% of R2O; wherein R2O is composed of Li2O, Na2O and K2O, and the content of K2O is smaller than that of Na2O. The technical problem to be solved is to provide the cover plate material with a large number of sensor optical channels, so that the cover plate material has high transmittance and high crosstalk resistance, a plurality of optical paths can be formed in the cover plate material, and the problems of scattering and the like in the light propagation process are reduced by selecting single glass with a specific formula, so that the light transmission efficiency is improved. The energy loss in the light ray propagation process is reduced, and the propagation distance of the light rays in the glass cover plate is increased; meanwhile, the glass cover plate also has higher mechanical strength.

The utility model relates to cable production technical field especially is a kind of cable straightening equipment, including mounting plate, mounting plate is provided with two and is symmetrically distributed before and after, the four corners of two mounting plates are all provided with mounting hole, the opposite end of two mounting plates is all fixedly connected with slide rail, straightening mechanism is slidably connected between two mounting plates, two stands are symmetrically fixedly installed in the upper end of the mounting plate located rear part, one end of a stand is fixedly installed with one positive and negative motor, the output of one positive and negative motor is fixedly connected with ball screw, ball screw is screw-connected with the rear part of straightening mechanism. The utility model discloses a kind of cable straightening equipment, reciprocating motion is driven by ball screw straightening mechanism, realize the stable feeding of cable and continuous straightening;While using the multiple straightening wheels of annular distribution, realize automatic adaptation different diameter cable with adjusting disc cooperation, improve straightening efficiency and versatility, applicable to the efficient processing and automatic production of multiple specifications cable.

The application provides a receiving end filter and a preparation method thereof, and a combined filter, and belongs to the field of coating technology. The application solves the problem that the existing receiving end filter is relatively single. The receiving end filter comprises a glass substrate, a narrow-band pass film system and an anti-reflection film system. The narrow-band pass film system comprises silicon oxide film layers and hydrogenated silicon / hydroxylated silicon / nitrogen hydrogenated silicon film layers which are alternately deposited layer by layer, and a silicon oxide film layer as an outermost layer. The anti-reflection film system comprises silicon oxide film layers and hydrogenated silicon / hydroxylated silicon / nitrogen hydrogenated silicon film layers which are alternately deposited layer by layer, and a silicon oxide film layer as an outermost layer. The receiving end filter has the advantages that the overlapping high transmittance is achieved within an angle range of 0°-60° of an incident angle, and the demand cut-off spectrum band has the effect of inhibiting the transmission of light signals within the angle range of 0°-60° of the incident angle.

This invention provides a high tensile strength and flame-retardant power cable, relating to the field of power cable technology, including a cable body and a tensile strength mechanism. The cable body includes an inner ring, retaining rings, a conductor, reinforcing filler, and a cable sheath. Multiple retaining rings, conductors, and reinforcing fillers are arranged in a circular array outside the inner ring. A buffer plate is fixedly connected to each retaining ring, with the end of the buffer plate away from the retaining ring fixed to the inner ring. The conductor is fixedly engaged within the retaining ring. The multiple retaining rings and reinforcing filler are staggered. The retaining rings and reinforcing filler are covered by the cable sheath, and the gap between the retaining rings and the cable sheath is sealed with a sealing filler. Compared to existing technologies, this application converts a portion of the tensile force on the cable into radial pressure, increasing the cable's tensile strength limit and providing over-limit protection for the entire cable, facilitating subsequent cable maintenance.

This utility model discloses a rapid cooling and spreading device for tea leaves, relating to the field of tea processing technology. The utility model includes a support frame and a vertical frame mounted on its upper surface. A lifting frame is positioned directly above the support frame. Fixed plates are fixed at both ends of the front end face of the vertical frame. Slide grooves are provided at both the front and rear ends of the inner walls of the fixed plates, and buffer components are installed inside the slide grooves. A striking component is positioned below the front end face of the vertical frame, and a limiting component is positioned at the bottom rear end of the lifting frame. This utility model, through the buffer and striking components, allows the striking rod to continuously impact the tea spreading sieve, causing the tea leaves to spread out. The large vibration amplitude of the tea spreading sieve accelerates the cooling and heat dissipation of the tea leaves without causing damage or affecting product quality. Furthermore, the spring provides cushioning protection for the lifting frame, increasing its service life. The limiting component facilitates quick assembly and disassembly of the tea spreading sieve, which is beneficial for tea processing, saving time and effort, and increasing work efficiency.

This invention discloses a laser cutting and blanking device for the production of structural components for concrete pump trucks, belonging to the technical field of laser cutting and blanking tools. It includes a combined support frame installed on a working plane, a support seat slidably engaged on the combined support frame, and a material-retrieving mechanism that is lifted and slidably mounted on the support seat. Discharge tables for cooperating with the material-retrieving mechanism are installed at intervals between the combined support frames. Multiple connecting frames are installed at intervals on the combined support frames. Sliding transmission blocks are installed at both ends of the support seat to drive it to slide on the combined support frame. The combined support frame serves as the foundation for the entire machine, ensuring the overall rigidity and stability of the equipment. The sliding transmission blocks can drive the support seat to slide smoothly on the combined support frame, enabling the lateral position of the material-retrieving mechanism to be adjustable, effectively improving the automation level and operating efficiency of the blanking process. Ultimately, it solves the problem of workpiece damage during transport caused by residual molten metal and slag in existing laser cutting and blanking devices.

This invention relates to a wear-resistant, long-life shot peening agent. The shot peening agent, by mass percentage, comprises: C: 0.55-1.0%, Si: 0.25-0.65%, Mn: 5.8-10.5%, Cr: 3.0-7.0%, Ni: 5.6-8.4%, B: 0.0015-0.004%, P: less than 0.05%, S: less than 0.03%, with the balance being Fe and unavoidable impurities. The shot peening agent is prepared by water atomization or gas atomization of molten steel with the above composition. The shot peening agent is then heated to 820-900℃ and held, followed by quenching to room temperature at a quenching cooling rate of V1≤V≤V2. The unit is ℃ / s, where: V1=8.58*ln(103.8-11.27*[B]-5.78*[Mn]-3.16*[Cr]-1.88*[Si]-1.05*[Ni]-2.14*[C])+13.7; V2=37.5+3018*[B]-1.5*[Mn]+5.4*[Cr]-2.1*[Ni]-6.2*[Si]+37.9*[C]; where [C], [Si], [Mn], [Cr], [Ni], and [B] represent the mass percentage content of C, Si, Mn, Cr, Ni, and B, respectively.

This invention discloses a stable and efficient method for preparing protoplasts from *Pseudolarix amabilis*. The method directly uses etiolated *Pseudolarix amabilis* seedlings as material to prepare protoplasts, requiring no other aseptic procedures, and the entire process is simple and convenient. Furthermore, by setting different buffer component ratios and a specific mannitol concentration, this invention achieves stable maintenance of the osmotic pressure of *Pseudolarix amabilis* seedling cells during the separation process. Experimental verification shows that the protoplast yield using this method is 1.32 × 10⁻⁶. 5 The protoplasts were prepared at a density of 1 protoplast per ml, with 95% of them intact and undamaged, resulting in significantly improved quality and activity. Furthermore, the enzymatic hydrolysate described in this invention overcomes the difficulty of enzymatic hydrolysis caused by the high degree of leatheriness in *Pseudolarix amabilis* leaf tissue. This method is suitable for widespread application in the field of herbaceous plant biotechnology.

This invention relates to the field of roadbed strength, specifically to a method for detecting the strength of highway roadbeds based on a semi-empirical modified curve. This invention records the pressure and displacement during impact using sensors on a falling weight deflectometer, calculates the vertical displacement of the road surface, selects a Beckman beam deflectometer and a test vehicle, installs the Beckman beam deflectometer between the two rear wheels of the test vehicle, corrects the test vehicle parameters, calculates the deflection value, corrects the diameter of the left and right tires of the test vehicle to 22.35 cm, and corrects the ground pressure of the left and right tires of the test vehicle to 0.75 MPa. The vertical displacement and deflection values ​​measured in steps (2) and (3) are recorded and compared with the national highway roadbed strength standard, thereby achieving rapid detection of roadbed strength without damaging the road structure. Furthermore, the test vehicle can be used to detect and evaluate the road smoothness of the selected road.

The utility model discloses a restraint device for preventing skin injury of a patient, which comprises a first fitting glove and a second fitting glove arranged under the first fitting glove, adjusting mechanisms are uniformly distributed on the outer side edges of the first fitting glove and the second fitting glove, and limiting mechanisms are arranged on the first fitting glove and the second fitting glove. According to the restraining device for preventing the skin of the patient from being injured, the first hook-and-loop fasteners can be folded upwards to be bonded with the corresponding second hook-and-loop fasteners, and the distance between the first attaching glove and the second attaching glove can be adjusted according to the hand of the patient; the first fitting glove and the second fitting glove are kept in compression contact with the fifth hand skin surface of the patient, the multiple sets of first hook-and-loop fasteners and the multiple sets of second hook-and-loop fasteners are matched so far, fixation is firmer, meanwhile, the hand of the patient cannot be tightened, the skin of the patient is more comfortable after long-time use, and the skin edema condition cannot be caused.

The application discloses a kind of strong penetration cooking-resistant type water-based textile paper tube two-component epoxy dip coating and preparation method thereof, belong to water-based paint technical field.The coating is composed of A component and B component, A component uses the composite wetting penetrant that self-emulsifying submicron water-based epoxy dispersion and sulfobutane acid dioctyl sodium salt, acetylene glycol surfactant are composed of;B component selects fast-drying water-soluble modified polyamine curing agent, adds reactive curing accelerator.By the synergy of small particle size epoxy dispersion and composite wetting penetrant, the technical problem that traditional water-based paint is poor in paper tube fiber permeability, weak adhesion is solved;At the same time, through the synergistic effect of fast-drying curing agent and accelerator, the drying time is shortened.The coating has the characteristics of low VOC content, environmental protection safety, strong penetration to paper tube substrate, fast drying speed, excellent adhesion, and the dense paint film formed after curing has the performance of saturated water vapor cooking resistance.

The present application relates to material conveying equipment field, disclose a kind of big inclination belt bucket belt excess material shake-off device, including vibration roller and transmission part, vibration roller is rotatably installed in big inclination belt bucket belt body return section one side, its roll face is equipped with multiple knock stick arranged at interval along circumference;Transmission part is connected with vibration roller transmission, for driving vibration roller rotation along with the same direction of return section operating direction.In the operation of big inclination belt bucket belt body, the linear velocity of vibration roller is greater than the operating speed of big inclination belt bucket belt body, so that multiple knock stick is in contact after instantaneous disengagement from the surface of belt, form intermittent patting action, thereby shake off residual material in hopper.The present application utilizes the instantaneous disengagement action generated by vibration roller linear velocity greater than belt speed, both cooperatively form high-frequency pulse vibration, simultaneously transmit vibration to hopper, can effectively remove adhering material in belt bucket belt hopper and on belt, avoid belt deviation and wear, without secondary pollution.

The invention relates to a preparation method of a composite substrate and the composite substrate, and the method comprises the steps: providing a wafer bonding structure to be processed, the wafer bonding structure comprises a supporting substrate, a device substrate, and an insulating layer located between the supporting substrate and the device substrate, and the first surface side of the supporting substrate is provided with a cavity structure, the first surface is arranged towards the second surface of the device substrate; the device substrate is thinned to a preset thickness from the third surface of the device substrate, and the preset thickness is smaller than or equal to 10 micrometers; the thinning step comprises the substeps of thinning the device substrate by adopting a mechanical grinding process, wherein the mechanical grinding process comprises the substeps of thinning the device substrate by adopting a coarse grinding process until the thickness is greater than or equal to 120 microns; thinning the device substrate until the thickness is greater than or equal to 60 microns by adopting an accurate grinding process; thinning the device substrate to a third preset thickness by adopting a wet etching process; and reducing the thickness of the device substrate to a preset thickness by adopting a chemical mechanical grinding process. In this way, the device substrate can be thinned to be below 10 microns and is not damaged.

The application discloses an LDH-based vaccine adjuvant and a preparation method and application thereof, and belongs to the technical field of aluminum adjuvant preparation of vaccines, and the preparation method comprises the following steps: mixing at least one of soluble magnesium salt, soluble zinc salt, soluble manganese salt and soluble calcium salt with soluble aluminum salt, and then performing a co-precipitation reaction with a sodium hydroxide aqueous solution in a colloid mill device, and performing crystallization to obtain LDH nanosheets; dispersing the LDH nanosheets in a PBS solution, adding a hepatitis B surface antigen molecule drug, uniformly mixing, and then performing centrifugation to obtain the LDH-based vaccine adjuvant. The LDH-based vaccine adjuvant can significantly promote the maturation of DC cells and the activation of T cells, and the total IgG level reflects the overall humoral immune response intensity of the body to vaccines or pathogens; the LDH-based vaccine adjuvant forms a "storage library" at an injection site to store antigens and slowly release the antigens, and the purpose of long-time continuous stimulation of the immune system in the body is achieved.

The utility model belongs to the technical field of optical cable manufacturing, and discloses an indoor flexible optical cable, which comprises an optical fiber unit, a high-temperature-resistant layer, an outer protective layer and a fireproof layer, the periphery of the optical fiber unit is coated with the high-temperature-resistant layer, the periphery of the high-temperature-resistant layer is coated with the outer protective layer, the outer protective layer is provided with a spiral notch, and the periphery of the outer protective layer is coated with the fireproof layer. According to the indoor flexible optical cable, the spiral notch is formed in the outer protective layer, so that the rigidity of the outer protective layer can be effectively reduced, the indoor flexible optical cable can be more flexible when being bent, the indoor flexible optical cable cannot be damaged when being wired in a complex indoor environment and at corners, the signal transmission speed and accuracy of the indoor flexible optical cable are ensured, and the indoor flexible optical cable is more flexible. The arrangement of the spiral notch can also disperse the stress on the outer protective layer when the indoor flexible optical cable is bent, improves the bending resistance of the indoor flexible optical cable, achieves the repeated use of the indoor flexible optical cable, and prolongs the service life of the indoor flexible optical cable.

The application discloses a fabric material identification method based on near-infrared spectroscopy, and the method comprises the following steps: acquiring multiple near-infrared spectrum data of a fabric to be measured, performing first-order derivation processing on the data, performing normalization processing on part of wave bands of one of the first-order derivation data, performing PCA dimension reduction processing on all the first-order derivation data, combining the characteristic data obtained through the normalization processing and the dimension reduction processing, and then performing MLP classification processing to realize identification of the fabric material. The application has the characteristics of high identification accuracy, high speed, simplicity, convenience, higher intelligence, and no damage to the fabric.

A method for installing a hydraulic pump station using a combination of tools: S1. The hydraulic pump station is lifted using claw jacks. Three pallet jacks are placed at the bottom of the hydraulic pump station, one of which is a main pallet jack with electric power and remote steering function, and the other two are follow-up auxiliary pallet jacks. The hydraulic pump station is lowered to support it on the three pallet jacks. S2. The hydraulic pump station is moved horizontally by the electric power of the main pallet jack. The direction of the rollers of the main pallet jack is controlled by a remote control to achieve steering. The two auxiliary pallet jacks follow the movement, moving the hydraulic pump station to the vicinity of the installation foundation. S3. The hydraulic pump station is lifted again using claw jacks, all pallet jacks are removed, and the hydraulic pump station is lowered onto the installation base. S4. The level of the hydraulic pump station is adjusted, the anchor bolts are tightened, and the connection between the hydraulic pump station and the external hydraulic pipeline is completed. This method solves the technical problems of existing installation methods, which make it difficult to lift, steer, and accurately position equipment in narrow spaces.

The utility model relates to the technical field of shielding materials, and discloses a shielding structure, a cable and an electronic product. The shielding structure comprises a polyimide film layer and a conductive cloth layer, the polyimide film layer and the conductive cloth layer are bonded through an acrylic adhesive layer, a conductive adhesive layer is attached to the side, away from the acrylic adhesive layer, of the conductive cloth layer, and the overall thickness T after the polyimide film layer, the acrylic adhesive layer, the conductive cloth layer and the conductive adhesive layer are attached is smaller than or equal to 0.04 mm. The cable comprises a conductive wire and a shielding structure, and the shielding structure is pasted and coated on the outer side of the conductive wire. The electronic product comprises a first main body and a second main body which are rotationally connected, and the first main body and the second main body are electrically connected through a cable. According to the utility model, the shielding performance, wear resistance and bending durability of the shielding structure are improved, the thickness does not exceed 0.04 mm, the shielding structure can bear 500,000 times of rotating friction without being damaged and layered, and the shielding structure still has high shielding performance and conductivity.

The application relates to an anti-impact supporting mechanism, in particular to an electric cylinder supporting mechanism and electric cylinder, which comprises an inner ring, an outer ring, a rolling pin and retainer assembly, a first thrust cylindrical roller assembly, a second thrust cylindrical roller assembly, a first thrust bearing retainer, a second thrust bearing retainer, a bearing sleeve and an end sleeve. The outer ring is arranged outside the inner ring, the rolling pin and retainer assembly are arranged between the inner ring and the outer ring, the first thrust cylindrical roller assembly and the second thrust cylindrical roller assembly are sleeved on the inner ring, the bearing sleeve is sleeved on the outer ring, one part of the end sleeve is connected to the inner wall of the bearing sleeve, and the other part of the end sleeve extends out of the bearing sleeve. The application can bear radial force and bidirectional axial force, and can meet the special requirements of the transmission shaft and the lead screw when being separated and combined.

This invention discloses a flexible perovskite solar cell and its fabrication method, relating to the field of solar cell technology. The fabrication method of a flexible perovskite solar cell includes the following steps: attaching one side of a UV-reducing double-sided adhesive tape to a rigid substrate; attaching the other side of the UV-reducing double-sided adhesive tape to a flexible substrate; performing a first laser scribing on the flexible substrate; fabricating a first charge transport layer, a perovskite layer, and a second charge transport layer on the surface of the substrate after the first laser scribing; performing a second laser scribing on the device; fabricating a metal electrode layer on the surface of the second charge transport layer; performing a third laser scribing on the device to obtain a perovskite solar cell; irradiating the perovskite solar cell with UV light; and separating the flexible substrate and the rigid substrate to obtain the flexible perovskite solar cell. This invention ensures that the flexible and rigid substrates are undamaged during the peeling process, and that no adhesive residue remains after peeling, without affecting the performance and encapsulation of the flexible device.

This utility model discloses a steel support frame connecting fastener, comprising: a pin for hinged cross bracing; a locking buckle for locking onto a steel column, the locking buckle having a strip-shaped adjustment hole extending horizontally; an ear seat connected to the locking buckle, one end of the ear seat having a hinge hole and the other end having a bolt hole; a bolt for fastening the connection; and a washer plate disposed between the ear seat and the locking buckle. This utility model provides a steel support frame connecting fastener that is manufactured in a factory and installed on-site. When erecting a steel support frame, the cross bracing is installed on-site, usually by welding: on-site welding easily causes air pollution and consumes manpower and resources, resulting in certain economic losses. This new steel support frame connecting fastener solves these problems by using a welding-free method.

The utility model relates to a kind of boiler acoustic soot blower, including acoustic soot blowing main part, wave soot blowing main part is connected with boiler by mounting structure, acoustic soot blowing main part and mounting structure are not integral structure, and mounting structure includes connecting assembly and damping assembly;Installation cylinder outer surface is annular array distribution mounting plate, the lower end of mounting plate extends outward with long strip plate, arc-shaped mounting plate is installed between the adjacent two groups long strip plate, arc-shaped mounting plate surface is equipped with round hole, arc-shaped mounting plate surface is equipped with damping assembly, connecting piece extends to arc-shaped mounting plate below by round hole, damping spring is set on the surface of connecting piece, connecting piece is connected with boiler by bolt, sealing plate is divided into two groups, and after end face butt joint, it is installed in the opening of installation cylinder upper end by bolt, bolt respectively passes through mounting plate, clamping plate, installation cylinder.The utility model solves the problem that existing acoustic soot blower cannot realize acoustic soot blowing main part and installation cylinder split, and then cannot improve the service life of acoustic soot blowing main part.

The application relates to the technical field of glass processing, in particular to a glass double-bevel edge grinding device, which comprises a rack, a driving motor one is fixedly installed on the rack, a grinding wheel is fixedly installed on the output end of the driving motor, a nozzle for spraying cooling liquid is arranged on the rack, a conveying roller for moving glass is arranged on the rack, a driving motor two is fixedly installed on the rack, a driving roller one is fixedly installed on the output end of the driving motor two, a driven roller is rotatably installed on the rack, gauze belts are simultaneously sleeved on the driving roller one and the driven roller, a heating cylinder is rotatably installed on the rack, heating wires connected with an external power supply are arranged in the heating cylinder, and the side wall surface of the heating cylinder is attached to the gauze belts. The glass double-bevel edge grinding device can remove the cooling liquid and glass chippings remaining on the top surface of glass in the glass edge grinding process without using extra water, so that the cost of the glass edge grinding process is reduced.

This invention relates to the technical field of grouting construction methods, specifically a method for grouting the bottom of a diaphragm wall trench, comprising the following steps: S1: excavating a trench on the natural ground; S2: lowering a reinforcing cage into the trench; S3: fabricating grouting pipes, ensuring their length exceeds the height of the reinforcing cage. The grouting pipes are composed of several grouting pipe units spliced ​​together with joints, maintaining a sealed contact between the grouting pipe units and the joints. During installation, all joints are tightened, and the lowering process is stable. By establishing a clear correspondence between the number of grouting pipes and the trench length, uniform grouting reinforcement is ensured for the toe areas of walls of different sizes. Simultaneously, the use of grouting pipe joints with specific threaded structures and sealing processes, along with specified binding and fixing methods to the main reinforcing bars of the reinforcing cage, enhances the integrity and sealing of the grouting pipes in complex construction environments, effectively preventing pipe detachment, breakage, and grout leakage, thus guaranteeing the final usability of the grouting channel.

The present application relates to a kind of antibacterial and anti-adhesion catheter based on intelligent response nanofiber membrane, which is composed of medical polymer catheter substrate, silane coupling agent transition layer grafted on the outer surface of the substrate and nanofunctional fiber membrane layer formed on the outer surface of the transition layer by electrospinning process, the nanofunctional fiber membrane layer is composed of polyvinyl alcohol loaded hyaluronic acid grafted copper-doped carbon dots (CCDH), CCDH takes copper-doped carbon dots as core, and forms core-shell structure by grafting hyaluronic acid on the surface. The present application solves the problem of easy peeling of catheter coating by chemical bonding, and the formed antibacterial and anti-adhesion catheter has very low water contact angle and friction coefficient, not only effectively blocks the initial adhesion of bacteria at the physical level by constructing hydration layer, but also releases copper ions and carbon dots by enzymatic hydrolysis of hyaluronic acid under bacterial infection microenvironment, induces the production of reactive oxygen species to kill bacteria efficiently, and has broad application prospect in reducing the risk of catheter-related urinary tract infection.

The invention relates to the technical field of nano biological medicines, and discloses a photo-thermal-enzyme catalysis nano-particle as well as a preparation method and application thereof. The photo-thermal-enzyme catalysis nano-particles are constructed by crosslinking water-soluble self-doped polyaniline nano-particles, human serum albumin, lactate oxidase and collagenase through a thioacetal linker capable of being split by active oxygen. Collagenase and lactate oxidase (LOx) are integrated into the same nanoparticle system through a thioacetal (TK) linker, the TK linker is split under the action of tumor microenvironment active oxygen (ROS) and H2O2 generated by catalysis of the LOx, the activity of the two enzymes is synchronously activated, a collagen matrix (physical barrier) is degraded, lactic acid (chemical barrier) is removed, the tumor microenvironment is efficiently remodeled, and the tumor microenvironment can be effectively inhibited. The problems that the regulation effect of a single barrier is limited, and the tumor microenvironment is difficult to improve are solved.

The utility model provides a kind of anti-falling culture stone wall system of sticking anchor integration, including wall base layer, thermal bonding layer and wall surface thermal insulation layer, culture stone bonding layer and culture stone layer that are sequentially arranged from inside to outside;Wall surface thermal insulation layer is connected with wall base layer by thermal fixing assembly;Thermal fixing assembly includes arrayed thermal nail;Thermal nail is anchored in wall base layer by penetrating wall surface thermal insulation layer, and the outer end of thermal nail is sequentially sleeved with fastening disc and rubber pad;Culture stone bonding layer is arranged on the outside of wall surface thermal insulation layer, and steel lath is laid in culture stone bonding layer;Steel lath is tied and connected on the outer end of thermal nail;The inner side of culture stone layer is embedded with fastening nail, and the nail body of fastening nail is inserted into culture stone bonding layer and forms mechanical engagement with steel lath.The utility model solves the technical problems that traditional culture stone construction has high risk of bonding failure, local bonding failure may cause large-area falling and quality is influenced by operator's responsibility and technical level.