10results about How to "Strong handling" patented technology

The invention relates to a gallium indium tin oxide film and a preparation method thereof. The preparation method of the gallium indium tin oxide thin film comprises the following steps: carrying out corona treatment on the surface of a substrate to obtain a pretreated substrate; preparing a liquid gallium-indium-tin alloy; and coating the surface of the pretreated substrate with a liquid gallium-indium-tin alloy to obtain the gallium-indium-tin oxide film. The preparation method of the Ga-ITO film has the advantages of being short in flow process, high in controllability, low in energy consumption, high in adjustability and the like, raw materials needed in the preparation process are non-toxic, convenient to collect and reusable, and the preparation cost of the Ga-ITO film can be greatly reduced.

The invention discloses a flood discharge dam crack simulation prediction and stability analysis method and a flood discharge dam crack simulation prediction and stability analysis device, relates to the field of water conservancy projects, and aims to realize comprehensive analysis and stability prediction of crack causes. According to the method, a nonlinear finite element model of the flood discharge dam section downstream facade crack is established, loads such as self weight, temperature, water pressure, sand pressure, uplift pressure and valve thrust are applied to the model, then flood discharge dam construction, water storage and whole-process simulation calculation of operation are conducted, then the crack initiation and expansion process of the flood discharge dam section downstream facade crack is inverted, and the flood discharge dam section downstream facade crack is obtained. And performing corresponding repair processing on the crack, evaluating the state of the processed crack through analogue simulation, and analyzing the expansion stability of the crack. According to the method, various influence factors are more comprehensively considered, more accurate crack cause analysis is provided, and the method has the advantages of being efficient, accurate, high in stability, high in controllability, low in detection cost and the like.

This invention relates to an ophthalmic microneedle, comprising: a delivery assembly including a cannula mechanism, a closed head cap detachably mounted at one end of the cannula mechanism, and a tail tube detachably mounted at the other end of the cannula mechanism; the closed head cap has a fixed outer tube at its axial center; the cannula mechanism includes an outer shell with a movable limiting hole, a delivery block corresponding to the movable limiting hole and axially movable within the outer shell, and a needle unit mounted within the outer shell and extending into the fixed outer tube; the needle unit passes through the delivery block; the needle unit includes a metal needle tube, a polyimide needle tube fixed to the free end of the metal needle tube, and a connector fixed to the other end of the metal needle tube; and an external assembly. Utilizing the excellent flexibility of the polyimide needle tube, it can conform to the slight curvature of the ocular tissue during puncture, with minimal risk of breakage.

This utility model discloses a device for removing the main shaft bearing of a transmission housing, including a fixedly connected base and a frame. The base has a separation hole, and a hydraulic cylinder is fixedly mounted on the frame. A pusher frame is fixedly connected to the piston rod of the hydraulic cylinder, and a push rod is fixedly connected to the bottom of the pusher frame. Two movable pads are also provided on the base, and the two movable pads are moved away from or towards each other via a drive mechanism. This utility model uses a hydraulic system to control the hydraulic cylinder to push the push rod and push the input shaft, achieving the separation operation of the main housing from the bearing on the input shaft. It has the advantages of strong operability, simplicity, time and labor saving, and can improve work efficiency, reduce damage to spare parts caused by disassembly, and reduce maintenance costs.

The utility model relates to the technical field of adjustable shock absorber discloses a kind of split adjustable shock absorber, including connector, the outer wall of the connector is fixedly connected with connecting block, the outer left side of the connecting block is fixedly connected with limit post, the outer wall of the limit post is fixedly connected with rotating shaft, the outer wall of the rotating shaft is fixedly connected with connecting plate, the inner wall right side of the connecting block is rotatably connected with rotating rod, the outer wall of the rotating rod is fixedly connected with rotating plate, the outer wall middle part of the rotating plate is fixedly connected with handle, the outer wall of the rotating plate is fixedly connected with bolt on both sides. In the utility model, the limit post of the left side of the connecting block of outer wall fixed rotating shaft, so that connecting plate can flexibly rotate around rotating shaft, drive rotating rod to rotate in the inner wall of connecting block, make the bolt of rotating plate both sides synchronous movement, connection is stable, safety is high, operation threshold is low and adaptability is strong, maintenance efficiency greatly improves.

A container sealing device and its packaging container and application, wherein the cover member comprises a cover surrounding structure and a cavity tube structure, the inner wall of the cover surrounding structure is provided with threads, the head end of the cavity tube structure is open and the tail end is closed or the tail end is provided with a channel structure, the release member is provided with a sealing sheet with a thinning connection structure and a breakthrough structure, the release member is made of low-density polyethylene material with a tensile strength of 7.1-8.9 MPa and a breaking elongation of 50%-220% through mold injection molding, the release member can be installed and sleeved on the outer wall of the cavity tube structure of the cover member, the container sealing device can be installed at the neck opening of the container, and by screwing the cover member, the cavity tube structure breaks the thinning connection structure of the sealing sheet of the release member, and the sealing sheet is pushed to the outside of the cavity tube structure, so that the material in the cavity tube structure is released into the container; the present invention also provides a packaging container, a packaging composition, an assembly method of the container sealing device and the application thereof.

The present application relates to aerospace machinery technical field, it discloses a kind of multifunctional drop test device, it includes vertical test bench, test bench is provided with energy storage release system, drop system and load acquisition system from top to bottom;Energy storage release system is used to store potential energy for drop system and control release drop system, drop system includes separable outer frame and inner frame, landing buffer device is fixed in inner frame;Drop system is used to lock landing buffer device, and after energy storage release system releases drop system, when a certain height from ground, continue to fall by impact buffer support to prevent outer frame, complete unlocking to inner frame, inner frame and landing buffer device continue free fall, and collide with load acquisition system.Impact before the drop system of the present application and load acquisition system complete inner frame unlocking, the disturbance that landing buffer device is received when unlocking is small, and test reliability is high;It is convenient to carry out anti-inclination single leg or multi-leg drop test.

The invention belongs to the technical field of filter material cleaning of filters for oil fields, and discloses a process and a device for cleaning a filter material of an oilfield produced water filter. The process comprises the following steps: injecting water into a medicine dissolving buffer tank; according to components of a filter material scale sample, a descaling agent is prepared through experimental debugging, and the descaling agent is added into a dissolved agent buffer tank to be dissolved to obtain a descaling cleaning solution; heating the descaling cleaning liquid; the descaling cleaning liquid is pumped into the filter, so that the whole filter is full of the descaling cleaning liquid, and the filter material is soaked; the descaling cleaning liquid is discharged from the filter to reach the filtering device, and returns to the medicine dissolving buffer tank after being filtered; and circularly cleaning until the cleaning is thorough. An existing filter backwashing process device is used for online cleaning, filter materials do not need to be cleaned, and water injection and chemical feeding are conducted through the front-end chemical dissolving buffer tank, so that the problems that a produced water treatment filtering device is high in scaling rate and large in descaling difficulty, the shutdown construction period of a traditional cleaning technology is long, and continuous operation of oil field production cannot be guaranteed are solved. The filtered water quality is stable and reaches the standard.

This invention relates to the field of nanomaterial synthesis, and particularly to an ultrafine MoO2 nanowire bundle exhibiting surface-enhanced Raman (SEPA) effect, its preparation method, and its applications. The preparation method includes the following steps: 1) A sol-gel reaction is carried out using P123, water, n-butanol, concentrated hydrochloric acid, and TEOS as raw materials. The reaction product is then heated and aged, followed by washing, filtration, drying, and calcination to obtain a hexagonal porous template. The aging temperature is 60–140°C. 2) Ammonium molybdate is dissolved in water and mixed with the template obtained in step 1). After stirring and standing, the mixture is dried for the first time, calcined under a hydrogen-containing inert atmosphere, and then the template is removed with hydrofluoric acid. After washing and a second drying, the final product is obtained. The ultrafine MoO2 nanowire bundle has a diameter of approximately 5 nm, a regular and controllable morphology, good repeatability and stability, and exhibits a strong localized surface plasmon resonance effect and outstanding SEPA effect.