23results about How to "Guaranteed unchanged" patented technology

The invention relates to an acceleration reliability test method and device, computer equipment, a medium and a product. The method comprises the steps of determining equipment-level activation energy of a target product in each reference constant temperature section based on activation energy of all components in the target product; determining a temperature acceleration factor and a vibration acceleration factor based on the reference cycle index and the activation energy of each equipment level; determining a comprehensive acceleration factor based on the temperature acceleration factor and the vibration acceleration factor; based on the reference test total time and the comprehensive acceleration factor, determining an acceleration reliability test profile of the target product; the accelerated reliability test profile is used for carrying out accelerated reliability test on the target product. By adopting the method, the test efficiency can be improved.

The utility model relates to a welding device, in particular to a scraper chain welding device, which comprises a position changing machine, a chain conveying device, a chain conveying device and a chain conveying device, the welding bottom plate is provided with a plurality of welding grooves for welding; the positioning pin is arranged on the welding bottom plate, is positioned on one side of the scraping plate and is used for positioning the scraping plate; the pressing device is arranged on the welding bottom plate and is used for pressing the scraping plate; and the positioning device is arranged on one side of the welding groove and used for positioning the chain link, so that the scrapers are symmetrically located on the two sides of the chain link. According to the scraper chain welding device, positioning of the scraper is achieved through the positioning pin, the scraper is fixed through the pressing device, positioning of a chain link is achieved through the positioning device, welding of the two sides of the scraper is facilitated through the welding groove, automatic overturning of welding is achieved through the positioner, it can be guaranteed that the position of the scraper is not changed during welding, deformation is reduced, and the welding efficiency is improved. And meanwhile, a plurality of products can be welded, so that the welding efficiency is greatly improved.

The application discloses a flow-adjustable multi-stage throttling device and application thereof, wherein the device comprises a front flange pipeline, a flow-adjustable component and a rear flange pipeline, and the front flange pipeline and the rear flange pipeline are tightly connected; the flow-adjustable component comprises a plurality of adjustable orifice plate assemblies arranged in the inner cavity of the flange pipeline formed by the front flange pipeline and the rear flange pipeline; each adjustable orifice plate assembly comprises a sealing cover plate, a bottom plate, an adjusting rod, a rotating disc and a driver; the adjusting rod is arranged in the mounting hole of the bottom plate, the rotating disc is mounted on the bottom plate, the driver is mounted on the sealing cover plate, and the throttling hole of the sealing cover plate and the throttling hole of the bottom plate are communicated to form a throttling window; the driver is used for driving the rotating disc to rotate when rotating; the rotating disc is used for driving the adjusting rod to enter or exit the throttling window through the rotating wheel, so that the effective throttling area of the throttling window is changed. The application can actively and low-noise adjust the flow under different working conditions.

This invention provides a sample drying device for raw ore sample analysis. The device includes a body with a heating tube fixedly connected to its inner wall and a turning assembly inside the body. In this device, the sample box rotates with the clamping frame, causing the sample to continuously change angles in space. This allows hot air to contact the sample surface from different directions, increasing the rate of moisture evaporation. Compared to static heating, this method better avoids localized moisture retention and improves drying uniformity. A turning plate moves the raw ore sample within the sample box, continuously loosening and turning the sample, constantly mixing the internal and external samples, significantly reducing the risks of agglomeration, sintering, and coking. Because the turning direction is perpendicular to the main rotation direction, the raw ore sample moves synchronously in both directions, resulting in more uniform drying and more comprehensive penetration of hot air into the sample.

This invention relates to the field of aircraft technology, providing a method for manufacturing a flap assembly, the flap assembly itself, and a vertical takeoff and landing (VTOL) aircraft. The method includes the following steps: rotatably connecting a wing box section to a flap section, and installing a ducted fan propulsion mechanism on the flap section; driving a drive mechanism with a harmonic reducer to the flap section, causing the drive mechanism to drive the flap section to rotate via the harmonic reducer; and connecting a locking mechanism with a pneumatic spring to the flap section, causing the locking mechanism to lock the flap section via the pneumatic spring. The manufacturing method for the flap assembly provided by this invention amplifies the torque of the drive mechanism by using a harmonic reducer to drive the flap section to rotate, making it easier to drive the flap section to rotate; and by connecting a pneumatic spring to the flap section to lock it, better preventing the flap section from rotating, thereby ensuring that the rotation angle between the flap section and the wing box section remains constant, avoiding affecting the flight status of the VTOL aircraft, and improving safety.

The application discloses a kind of tunnel crossing active fault adaptive structure system, including tunnel structure, safety space, track system and adaptive support system;When active fault dislocation, the surrounding rock that moves downward is footwall surrounding rock, safety space is provided between track system and the tunnel structure arranged in footwall surrounding rock, adaptive support system is arranged in safety space;Adaptive support system includes gear device arranged in the both sides of track system, gear device is connected with tunnel structure and track system;After active fault dislocation, footwall surrounding rock moves downward, hangingwall surrounding rock supports track system upward, track system moves upward relative to footwall surrounding rock, gear device has brake function, provides vertical support force for track system arranged in footwall surrounding rock tunnel structure, keeps the vertical direction position of track system unchanged.The application can realize adaptive adjustment function according to fault dislocation, maintain the flatness of track system in longitudinal direction, make fault dislocation amount distribute reasonably in tunnel section.

The present application belongs to the field of vehicle technology, and in particular, relates to a shock absorber and its control system. The existing shock absorber has a complex structure, high manufacturing cost, and is difficult to be widely promoted; the input speed of the generator is low, the vibration energy conversion efficiency is insufficient, and the rigidity and carrying capacity need to be improved. The present application provides a shock absorber, including a first hanging ring, a first cover, a connecting rod mechanism, a first disk, a second disk, a second cover, and a second hanging ring connected in sequence. The first disk is provided with a central axis, the central axis is connected to a speed increaser, the speed increaser is provided on the second disk, the speed increaser is connected to a linear motor, the central axis is connected to a limit assembly, a slider is provided on the second disk, a slide rail is provided on the first disk, the slider slides on the slide rail, a damper is provided between the first cover and the first disk, one end of the damper passes through the first cover, and the other end of the damper is connected to the first disk. Small size, simple structure, high power generation efficiency, large rigidity, and strong carrying capacity.

The embodiment of the present disclosure provides a kind of high temperature gas cooled reactor main helium fan main bolt tensile measurement device and method, the head of the main bolt is provided with tensile measurement base block and the tensile measurement rod inserted in the tensile measurement base block, measurement device includes: measurement base, measurement base is provided with first installation hole and the measurement hole being communicated with the first installation hole, first installation hole is used to be connected with the tensile measurement base block;Intermediate measurement rod, the first end of intermediate measurement rod is movably inserted into the measurement hole and can be contacted with the tensile measurement rod;Fixed support, fixed support is fixed to the measurement base, fixed support is provided with second installation hole at the position corresponding to the measurement hole;Displacement measuring element, the first end of displacement measuring element passes through the second installation hole to the second end of the intermediate measurement rod abuts.This measurement device of the present disclosure is simple in structure, can reliably fix displacement measuring element, and installation is convenient, measurement is simple.

The present invention relates to the technical field of ship accessories, and discloses a pressure gauge buffer tube manufacturing device and a manufacturing method thereof, a pressure gauge buffer tube manufacturing device, comprising a base, a positioning rod, an operating handle, a threaded rod, a bending die guide wheel and a fixed shaft, the positioning rod and the fixed shaft are vertically fixedly connected to the base, the front end of the operating handle is vertically rotatably connected to the upper end of the fixed shaft, the threaded rod is vertically fixedly connected to the operating handle, the bending die guide wheel is threadedly connected to the threaded rod, the threaded rod and the fixed shaft are parallel to each other and are located on the same side of the operating handle as the bending die guide wheel, and the outer peripheral wall of the bending die guide wheel is provided with a U-shaped groove matching the tube body. This pressure gauge buffer tube manufacturing device is safe and convenient to use, and in the on-site pressure gauge buffer tube manufacturing process, it avoids the potential safety hazards caused by heating by flame or other means, and can be mass-produced to reduce costs and increase efficiency.

This utility model relates to the field of steel structure technology, specifically to a welding steel structure clamp, comprising a base, with clamps on both sides of the upper middle portion of the base, each clamp including a base plate, with a fixed clamping plate fixedly installed on one side of the upper part of each base plate, and a sliding groove formed in the middle of the upper part of each base plate, the sliding clamping plate being slidably engaged in the middle of the sliding groove, a hollow groove formed in the middle of one end of the base, a semi-circular worm gear fixedly installed on one side of the middle of the hollow groove, a semi-circular sliding groove formed in one side of the middle of one end of the base, a semi-circular sliding plate being slidably engaged in the middle of the semi-circular sliding groove, a fixed plate fixedly installed at the lower end of the semi-circular sliding plate, and a worm gear rotatably installed in the middle of one end of the fixed plate. This utility model solves the problem that traditional clamps are mostly fixed angles, such as right angles, and can only meet the needs of straight line or simple angle welding, such as flat welding and fillet welding, which have many shortcomings in practical use.

The utility model relates to the technical field of ship tail shaft disassembly and assembly auxiliary equipment, in particular to a ship tail shaft disassembly and assembly bracket which comprises two bearing assemblies, the two bearing assemblies are symmetrically arranged and used for bearing a ship tail shaft and assisting in disassembly and assembly of the ship tail shaft, and each bearing assembly comprises a supporting frame. A hydraulic cylinder is fixedly installed on the supporting frame and horizontally arranged. According to the ship tail shaft supporting device, the two sets of supporting assemblies are arranged to support a ship tail shaft from the two sides, the ship tail shaft is assisted to be disassembled and assembled, meanwhile, the telescopic end of the hydraulic cylinder is connected to the middle of the connecting support, and the two ends of the connecting support are fixedly connected with bearing concave frames which are arranged in an inclined mode. Meanwhile, due to the fact that the positioning roller is rotationally connected with the bearing concave frame, the ship tail shaft can be rotated while it is guaranteed that the center of the ship tail shaft is not changed, the angle of the ship tail shaft can be conveniently adjusted, and the ship tail shaft can be better aligned with an installation structure on the ship when installed.

The utility model relates to the technical field of water quality monitoring, and discloses a water quality monitoring device with a winding mechanism, which comprises the winding mechanism, the winding mechanism comprises a winding box, a winding frame is arranged in the winding box, the surface of the winding frame is rotatably connected with a winding roller, the surface of the winding roller is sleeved with a water inlet pipe, and a water outlet pipe is arranged on the surface of the winding roller. According to the scheme, suction force is generated through a water inlet pipe when a booster pump is started, water resources can enter the water inlet pipe through a filter head, then the water resources can enter the temporary storage box through the booster pump, the water quality in the temporary storage box is detected through a water quality detector, and the water quality in the temporary storage box is detected; the winding roller rotates to drive the water inlet pipe to be wound, meanwhile, the reciprocating lead screw rotates to drive the internal thread plate to move, the internal thread plate moves to drive the guide roller to move, and therefore the water inlet pipe is guided during winding, and the probability that the water inlet pipe is wound due to winding is reduced.

The utility model discloses a faucet test bench, which comprises a machine body, a working table arranged on the machine body and an operation table top arranged on the machine body and positioned on the side of the working table, a clamp used for fixing a faucet is arranged above the working table, and a mounting seat used for fixing the clamp is arranged on the working table. The clamp is obliquely arranged on the mounting base, a water storage tank is arranged in the machine body and located below the clamp, and a notch communicated with the water storage tank is formed in the workbench. Therefore, the faucet is stably fixed through the clamp, the position of the faucet is not changed in the testing process, and the testing accuracy is improved. And the clamp is obliquely arranged, so that the water flow can be smoothly discharged from the faucet after the test, the water flow is prevented from accumulating on the faucet or the clamp, and the product quality is ensured. Waste water generated in the testing process is collected through the water storage tank on the lower portion, cyclic utilization of water resources is achieved, and waste of the water resources is reduced.

The application belongs to the technical field of navigation and positioning, and specifically discloses a method and system for cooperative positioning of unmanned aerial vehicles (UAVs) in a satellite denial environment. The application uses the relative distance information between cluster UAVs to design a cluster UAV cooperative positioning system architecture based on relative information assistance. Through the architecture, the communication between the inertial navigation system and the UAV cluster can provide more reliable positioning services, and the selective correction adaptive particle filtering algorithm is combined to optimize the positioning accuracy. The method of the application uses the inertial navigation system to obtain the self-position of each auxiliary UAV, uses the exogenous relative distance sensor to measure the relative distance with respect to the UAV to be assisted, and then obtains the observation position of the UAV to be assisted. The result is brought into the improved particle filter for filtering to correct the drift error of the inertial navigation system, thereby improving the positioning accuracy of cooperative positioning in the denial environment.

This invention discloses an engineering design assistance method based on multi-source data fusion, comprising the following steps: Step 1: Obtaining a fragment set; Step 2: Obtaining a conflict development map; Step 3: Converting the conflict development map into a structured input sequence and inputting it into an improved MaskFormer model, constructing a conflict potential field distribution through a cross-source conflict potential field reflection mechanism, and obtaining a conflict structural unit set; Step 4: Determining the adjudication seed; Step 5: Constructing a manifold topological tension field and performing selective freezing; Step 6: Fusion updating of geometric structural fragments to generate candidate design schemes; Step 7: Matching and verifying the candidate design schemes and performance region fragments to obtain an optimized design scheme; Step 8: Performing consistency screening by combining the optimized design scheme and design intent expression fragments, and outputting the engineering design assistance result. This invention combines the improved MaskFormer model with the manifold topological tension field to achieve efficient engineering design assistance.

This invention belongs to the field of target detection technology, specifically relating to a method, device, and medium for detecting unmanned aerial vehicles (UAVs) in infrared images based on complementary design. The method includes: S1, acquiring an infrared image to be detected; S2, inputting the infrared image into a pre-trained detection model to obtain the UAV category and location information in the infrared image; the detection model is an improvement on the YOLOv8 network, the improvement including: adding low-level feature detail enhancement modules to the first and second C2f layers of the backbone network; the low-level feature detail enhancement module involves: applying random perturbation to the feature map output by the C2f layer; reconstructing the spectrum based on the corresponding phase and amplitude, and restoring it to the spatial domain to obtain the feature map output by the low-level feature detail enhancement module. This invention solves the technical problem of existing target detection methods lacking modeling of infrared image characteristics.

The application relates to a vector index method and system adapting to a garbage collection mechanism, and relates to the technical field of vector index, which comprises the following steps: an index entry of a frozen area, an additional area and a directory area homepage identifier is established for each cluster unit, and each area is organized in a PostgreSQL page mode. Vector coding is written into the frozen area, and a path is recorded in the directory area; when incremental insertion is performed, the additional area is positioned according to the homepage identifier to write an additional unit containing a valid flag. When deletion or vacuuming is performed, only the valid flag of the target entry is invalidated, and the physical organization is kept unchanged. Distance estimation is respectively performed on the valid entries of the frozen area and the additional area, and table lookup is performed after merging and sorting. When background maintenance is performed, only the valid entries are read to recode and generate a new storage area, and switching is completed through atomic updating of the index entry homepage identifier. The application can reduce the incremental writing and vacuuming overhead, stabilize the retrieval performance, support online maintenance without downtime, and reduce the page allocation, space expansion and I / O overhead.

The invention discloses a multi-channel eddy current displacement sensor based on an MCU. The multi-channel eddy current displacement sensor comprises a microcontroller unit (MCU), a driving module, an LC oscillating circuit with a digital potentiometer, a gain-adjustable amplification detection circuit, an ADC conversion module and a temperature acquisition circuit. Wherein the driving module, the LC oscillation circuit, the amplification detection circuit and the ADC conversion module are sequentially connected in series and are respectively connected with the MCU; and the temperature acquisition circuit is connected with the ADC conversion module. According to the invention, errors can be reduced, and multi-channel displacement measurement can be realized. The sensor can be widely applied to the technical field of measurement sensors.

The present application relates to the technical field of power take-off electric gear shifting, in particular to a power take-off electric gear shifting device and system, the present application can control the motor of the power take-off system based on the instruction transmitted by the automatic gearbox of the new energy vehicle, use the vehicle controller to collect the information such as the gear shifting intention of the driver, accurately judge the gear position of the vehicle through corresponding calculation, and realize the automatic gear shifting of the vehicle. The structure can realize self-locking, after the gear shifting is completed, the motor stops outputting torque, the power take-off device keeps the existing position, and the gear position is ensured unchanged. The pain points that most power take-off devices are controlled by air pressure and hydraulic pressure, and only part of the power take-off motor cannot stop rotating and is easy to burn out, and cannot realize self-locking, can be effectively solved, the availability of the whole vehicle electrical control is improved without affecting the gear shifting efficiency, and the development of new energy vehicles towards intelligent direction is realized.

The white-box encryption method based on neural network includes a confusion technique and a white-box AES encryption and decryption process, and the core steps of the AES scheme with a fixed key are summarized into multiple mapping tables, and the neural network is used to replace the encryption and decryption operation through overfitting training of the tables to achieve the confusion effect. The white-box AES encryption process is divided into two stages, the round key of AES each round is added with a byte substitution result, a random bijection is used for permutation to protect the key, and the combined mapping is confused by a neural network; secondly, the corresponding permutation recovery operation is introduced in the column confusion operation, and a randomly generated key byte is XORed after the finite field multiplication operation, and the above operation is replaced by a neural network. The decryption process is the same. The present application is highly combined with the neural network, and for the first time, the neural network is used to confuse part of the steps in the block encryption, and through the unexplainable nature of the neural network, a reliable black box environment is provided for part of the operation, and the present application has the advantages of good security, strong attack resistance and high expansibility.

The present invention discloses a suture-free decellularized biological amniotic membrane ocular surface composite material and a method of use, which belongs to the field of biomaterials. The composite material includes an amniotic membrane matrix and a support supporting the amniotic membrane matrix, wherein the amniotic membrane matrix is ​​derived from human amniotic membrane tissue material, the support includes an animal cornea or a non-biological material cornea, and the support is prepared to match the shape of a corneal contact lens with the shape of a human cornea. In clinical use, the amniotic membrane composite material can be placed in the conjunctival sac and attached to the surface of the eyeball. The decellularized biological membrane matrix can effectively protect the wound surface of the cornea, bulbar conjunctiva or palpebral conjunctiva, prevent the wound surface from adhering to normal tissue, and inhibit the occurrence of clouding. There is no need to suture the wound surface with a dressing, which is convenient for ophthalmic clinical surgery and the application of later replacement of eye dressings. It has been experimentally verified that the suture-free decellularized biological amniotic membrane ocular surface composite material prepared by the present invention can significantly improve eye diseases, and provides a new method and direction for the effective treatment of clinical eye diseases.

The utility model discloses a filling machine for lubricating oil production relates to lubricating oil processing technical field. The utility model discloses a base and the casing of fixed connection at the top of base, the top of base is provided with a plurality of oil pipes, the base bottom is fixedly connected with a plurality of support columns, the casing inner wall is fixedly connected with the support plate no.

The utility model discloses a kind of adhesive tape precision cutting and winding integrated device, including bottom plate, the bottom plate upper end one side is fixedly arranged with side plate, the side plate upper end one side is movably arranged with guide cylinder by pivot, the side plate surface is provided with winding mechanism for winding adhesive tape in lower end, the winding mechanism includes sliding slot, sliding block, motor, winding shaft, winding cylinder, laser ranging device, the side plate surface one side is provided with sliding slot, the sliding slot inside is movably hinged and set with sliding block, the sliding block inside is fixedly set with motor, the sliding block surface is movably set with winding shaft by bearing, and the power output shaft end of motor and winding shaft are transmission connection between them.The utility model utilizes the mode of laser ranging, the diameter of winding device can be monitored in real time, so that the diameter of winding device can be accurately cut off after reaching predetermined length, so precise cutting effect can be achieved.