16results about How to "Guaranteed mechanical stability" patented technology

The present application belongs to the technical field of polyurethane / polyurea, and discloses a stress change material and a preparation method thereof. The stress change material comprises hydrophobic segments and hydrophilic segments. The stress change material can change in size in two ways under water stimulation: one is to absorb a large amount of water to induce rearrangement of the hydrophilic segments, so as to realize volume expansion; the other is to absorb a small amount of water as a plasticizer to promote the movement of the segments, so as to realize shape recovery. Meanwhile, due to the introduction of the hydrophobic segments, the polyurethane / polyurea can still maintain sufficient mechanical strength in a water environment, thereby widening the application range of the material.

This invention relates to the field of silicon carbide crystal preparation technology, and discloses a crucible for growing high-purity semi-insulating silicon carbide crystals, comprising an inner liner layer, a transition layer, and an outer support layer sequentially composited from the inside out. The inner liner layer of the crucible adopts a composite structure of high-purity tantalum carbide matrix and rare earth oxides. Under high-temperature crystal growth environment, rare earth elements form a continuous segregation layer through grain boundary diffusion behavior, passivating active sites at grain boundaries and preventing oxygen impurities from penetrating inward. At the same time, the gradient material design of the transition layer achieves progressive matching of the coefficient of thermal expansion, fully absorbing the interfacial stress during thermal cycling and avoiding the risk of interlayer delamination, thereby ensuring the high stability and long service life of the semi-insulating properties of silicon carbide crystals. The microgroove array structure set on the outer surface of the inner liner layer is treated with pyrolytic carbon coating to construct a regular gaseous material transport path, reducing the tendency of polymorphic phase transitions at the crystal growth interface, thereby obtaining a highly uniform, inclusion-free silicon carbide single crystal structure.

The application provides a monolithic adsorbent based on 3D printing technology. The application selects halloysite nanotubes and hydroxypropyl methyl cellulose as binders. The halloysite nanotubes have excellent high-temperature resistance, hardness and durability, and chemical stability, and can meet the application requirements of the catalyst under high-temperature complex working conditions, so that the catalyst structure remains mechanical stability. The hydroxypropyl methyl cellulose has processability and plasticity, and can help to print complex shapes and structures. The super strong bonding force and interlayer adhesion can effectively bond the printing materials, ensure the firmness and stability of the interlayer adhesion in the printing process, and help to reduce the distortion and deformation in the printing process. The monolithic passive NO x adsorbent provided by the application has a simple and feasible preparation method, is a non-noble metal adsorbent with economic benefits, and can be connected in series with a downstream SCR treatment unit to realize ultra-low emission in the NOx cold start stage.

The application provides a quantum storage device, a preparation method and a quantum device, and relates to the technical field of quantum storage devices. The quantum storage device comprises a substrate, a superconducting circuit, at least two support parts, at least two diffusion regions and a superconducting mechanical oscillator. The at least two support parts are arranged vertically on a first surface. The at least two diffusion regions are arranged one by one with the support parts. The at least two diffusion regions are connected with the superconducting mechanical oscillator, so that the superconducting mechanical oscillator is arranged in suspension on the first surface. The superconducting mechanical oscillator comprises a suspension part and at least two cantilever beams, and the cantilever beams are arranged one by one with the diffusion regions. The direction of each cantilever beam is different, so that the at least two cantilever beams jointly form a first branch structure, and the first branch structure is used for reducing the dissipation of vibration energy of the suspension part for the first time based on a dissipative dilution mechanism. The application can guarantee the mechanical stability of the superconducting mechanical oscillator and the preparation yield, and can reduce mechanical loss and improve the quality factor.

The application belongs to the technical field of electrical components, and particularly relates to an equipment for connecting electrical conductors, especially to an optical fiber connector shell assembling equipment and an assembling process thereof; wherein one kind of optical fiber connector shell assembling equipment comprises: a driving piece which is rotationally arranged in the working position and has a limiting groove in the middle part for limiting a ceramic ferrule; a positioning sheet which is liftably arranged on the outer wall of the driving piece and is linked with the driving piece; and at least two limiting plates which are slidingly arranged on the side wall of the positioning sheet and are used for limiting springs; wherein, after the ceramic ferrule is placed in the limiting groove, the spring manipulator sets the spring on the outer wall of the ceramic ferrule from top to bottom; the driving piece drives the positioning sheet to move downward, and the limiting plate extrudes the spring to compress, so as to expose the ceramic ferrule; the plastic upper shell is set on the outer wall of the ceramic ferrule from top to bottom, and the plastic upper shell pushes the limiting plate to shrink into the positioning sheet, so that the compressed spring is reset upward to be inserted into the plastic upper shell.

The application discloses an anti-interference high-voltage cable detection device, which comprises a cable detection device body, and the inner part of the cable detection device body is respectively provided with a self-adaptive stabilizing mechanism, an automatic alignment mechanism and a controller; the self-adaptive stabilizing mechanism is arranged, linkage between a gear, a rack, a transmission shaft and an eccentric wheel is utilized, self-adaptive clamping of cables with different diameters is realized, compared with a traditional fixed clamping or elastic clamping structure, the problem of limited clamping range and unstable clamping is effectively solved, the reliability of clamping is ensured, damage to the cable is avoided, the contact state is detected in real time by a contact sensor and feedback control is performed, the clamping strength can be dynamically adjusted, and therefore the stability and safety of the overall structure are improved.

The invention provides an MOF (Metal Organic Framework) composite catalytic material for removing VOCs (Volatile Organic Compounds) as well as a preparation method and application thereof. According to the MOF composite catalytic material for removing VOCs, modified cellulose is used as a three-dimensional structure carrier, MOF and a metal catalyst are firmly loaded in a cellulose network through an in-situ growth process, and a macroscopic composite catalytic material with hierarchical pores, high specific surface area and good mechanical stability is formed; the composite material shows excellent catalytic efficiency, cycling stability and recoverability in the fields of catalytic degradation of VOCs, air purification and the like, and has a good application prospect. The invention also provides a preparation method and application of the MOF composite catalytic material for removing VOCs.

The utility model relates to the technical field of beam strander equipment, in particular to a modularized adjustable stranding mechanism of a beam strander, which comprises a hollow main shaft. Power equipment for controlling the hollow main shaft to rotate is installed on the hollow main shaft, the hollow main shaft is connected with an annular support through spokes arranged at the end of the hollow main shaft, an annular groove is formed in the middle of the outer side face of the annular support, annular bosses are arranged on the edges of the left side and the right side of the annular support, and positioning holes are annularly and evenly distributed in the annular bosses; through the split type modular design, such as the slidable arc-shaped sliding block, the annular boss with the positioning hole and the detachable wire harness mounting frame, rapid adjustment of stranding parameters is achieved, an operator can complete stepless adjustment of the pitch and the stranding angle only by inserting a stud with a head into the positioning hole, a mold does not need to be replaced or a machine does not need to be stopped to disassemble components, and the production efficiency is improved. And the remodeling time is shortened, and the flexibility and efficiency of multi-specification wire production are remarkably improved.

This utility model belongs to the field of air pollution control and environmental protection, and discloses an intelligent environmental monitoring instrument for air pollution control. It includes a telescopic rod device for easy extension and retraction, and a housing for storing electrical energy and accommodating movement. The telescopic rod device is fixedly installed at the rear of the housing. The housing contains an extension device for lifting, suspending, deployment, and environmental monitoring. The housing includes a chassis body with two symmetrically mounted support legs on one end of the chassis bottom and two symmetrically mounted walking components on the end of the chassis away from the support legs. This intelligent environmental monitoring instrument for air pollution control, through structural innovation, organically combines mobility, deployment stability, and operational efficiency, solving the pain points of traditional environmental monitoring equipment such as laborious handling, time-consuming installation, and poor terrain adaptability. It is particularly suitable for scenarios requiring frequent changes of monitoring points in air pollution control, and has high practical value and promotion potential.

The application discloses a circuit board riveting tool, and relates to the technical field of circuit board processing, which comprises a lower die plate and an upper die plate arranged above the lower die plate, wherein the upper die plate is provided with a driving element for driving the upper die plate to move up and down; the top surface of the lower die plate is provided with a plurality of placing rods, the placing rods are provided with arc-shaped circuit boards, the top surface of the placing rods is provided with placing holes, and the placing holes are provided with hollow rivets; the bottom surface of the upper die plate is provided with a plurality of rivet pressing rods corresponding to the hollow rivets, and the rivet pressing rods are provided with rivet pressing plates; the rivet pressing plates are provided with pressure expansion rods, and the diameters of the pressure expansion rods gradually decrease from top to bottom; the pressure expansion rods with gradually decreasing diameters can make the hollow rivets gradually and uniformly deform from the top in the riveting process, reduce the situation that the local pressure is too large, effectively reduce the risk of deformation or even breakage of the hollow rivets, and thus guarantee the mechanical strength of the riveting points and the stability of electrical connection.

This application provides a common-mode inductor, a switching power supply, an inverter, and communication equipment. The common-mode inductor includes a U-shaped magnetic core, an enameled flat copper wire winding, and a fixing structure. The enameled flat copper wire winding is wound vertically on the U-shaped magnetic core. This vertical winding method allows the enameled flat copper wire to be wound perpendicular to the plane of the U-shaped magnetic core. This winding method can improve the filling rate of the winding, reduce the space occupied by the winding, and also help reduce eddy current losses and proximity effects at high frequencies, thus improving the high-frequency performance of the inductor. The enameled flat copper wire has good conductivity and insulation properties, which can meet the operating requirements of the inductor under high current and high voltage environments. The fixing structure is used to fix the U-shaped magnetic core and the enameled flat copper wire winding, ensuring the stability of the winding's position on the U-shaped magnetic core and preventing loosening or displacement of the winding during inductor operation, thereby ensuring the electrical performance and mechanical stability of the inductor.

The utility model relates to the field of overvoltage protector especially relates to a six -column overvoltage protector, including box, body, mounting groove, magnetic ring current distributor and flexible conductor, the box upper end is equipped with the mounting groove that is linear array distribution, the mounting groove inside is equipped with the protector body, the body bottom outside is equipped with the magnetic ring current distributor that is linear array distribution, the mounting groove bottom is equipped with flexible conductor. The device can utilize linear array distribution's magnetic ring current distributor forced shunt, so that each body can participate in the protection process, and the protection efficiency is optimized, the problem that the existing six -column overvoltage protector is easy to appear single column use transition and other column to keep intact is solved, does not have the optimization best protection state, causes the resource waste.

The invention discloses a composite photocatalytic material with excess sludge as a carrier and a preparation method and application thereof.Porous conductive carbon obtained after carbonization and acid pickling of the excess sludge serves as a framework of the material, a core-shell structure unit composed of a CdS nanometer core and a C3N5 shell layer grows on the surface of the framework in situ, and an S-schema heterojunction is formed. The preparation method mainly comprises three steps of carbonization and purification of sludge, hydrothermal in-situ growth of CdS and vapor deposition wrapping of a C3N5 shell layer. The material fully utilizes the charge separation advantage of a conductive network and heterojunction of sludge carbon, shows excellent hydrogen evolution activity and stability under visible light, realizes high-value utilization of excess sludge, and provides a new material for efficient and low-cost photocatalytic hydrogen production.

This invention discloses a heterogeneous stacked GAA structure with an intermediate diamond thermal conductive layer and its manufacturing method. The structure includes multiple stacked GAA wafers, each wafer being a double-sided 2nm GAA integrated structure, with a diamond thermal conductive layer embedded within an intermediate silicon substrate. The manufacturing method includes: temporarily bonding a first 2nm GAA wafer to a glass substrate, etching a thermally conductive cavity on the back side, and growing high-density polycrystalline diamond in situ using MPCVD; thinning and temporarily bonding the back side of a second 2nm GAA wafer; low-temperature hybrid bonding on the diamond layer and the circuit surface of the second wafer; laser lift-off of the substrate; achieving multi-layer stacking through microbumps and copper-copper bonding, and encapsulating it within an encapsulation layer. Thermally conductive microchannels are provided within the encapsulation layer for connection to an external cooling system. This invention completely eliminates the heat accumulation effect of 3D stacking through double-layer thermal conductivity, supports full-load operation of double-sided GAA without frequency reduction, and simultaneously doubles the computing power density.

The utility model discloses a kind of visual display devices for vehicle driving simulation training, it is related to the technical field of visual display, it includes support and display screen, the display screen is set on support;The support includes connecting seat;Stand, rotation is set in the top of connecting seat by pivot;Sleeve, is sleeved on stand;Mounting panel, rotation is set on sleeve by pivot;Two the pivot are all provided with locking member, for locking the position after pivot rotation;The display screen is detachably set on the side of mounting panel, adopts stand, sleeve double pivot structure cooperation locking member, realize the three-dimensional adjustment of display screen horizontal angle, vertical height and inclination angle, both can adapt the individualized visual angle demand of different body type user, also can keep the mechanical stability of display unit in intense simulation movement, avoid visual angle deviation interference training effect.

This invention relates to the field of conductive, wear-resistant, and superhydrophobic materials, particularly a method for preparing conductive and highly wear-resistant carbon nanotube films. The invention involves first coating a pretreated carbon nanotube film with an epoxy resin layer for pre-curing, then spraying an HD / KH570 / SiO2 solution onto the surface of the pre-cured epoxy resin layer. After curing the coating, a conductive and highly wear-resistant carbon nanotube film is formed. The carbon nanotube film prepared by this method retains the conductivity of the original film while simultaneously increasing its hydrophobic and wear-resistant properties.