42results about How to "Close and firm contact" patented technology

The invention discloses a heat dissipation structure for an underwater LED lamp. The heat dissipation structure comprises a metal lamp housing, a transparent lampshade, and a bottom cover, wherein the transparent lampshade comprises an upper ring hood, a lower ring hood, a transparent sheet and a sealing ring; a base plate is arranged inside the transparent lampshade; a plurality of LED beads are arranged on the base plate; a heat dissipation plate is arranged under the base plate; a plurality of clamping grooves are formed in the lower surface of the base plate; each clamping groove is connected with the corresponding horizontal section of each L-shaped heat pipe; a metal expansion barrel is arranged inside the metal lamp housing; the vertical section of each L-shaped heat pipe penetrates through a through hole in the lower ring hood and extends into a ring cavity defined by the inner wall of the metal lamp housing and the outer wall of the metal expansion barrel; when the bottom cover is fixedly connected with the lower end of the metal lamp housing from bottom to top, the vertical sections of the L-shaped heat pipes are tightly clamped between the inner wall of the metal lamp housing and the outer wall of the metal expansion barrel. The structure disclosed by the invention fully utilizes the quick heat conducting property of the heat pipes, so as to greatly enhance the heat dissipation effect of the underground LED lamp; the heat dissipation structure is simple, and very easy to assemble, so as to greatly improve the efficiency of assembly and production.

The invention discloses an elastic component driving clamping buckle type high-heeled shoe with a replaceable shoe heel. An elastic component driving clamping buckle heel removal device of the elastic component driving clamping buckle type high-heeled shoe comprises a clamping buckle and a pull rod which are in shaft connection with a shoe sole separately. One end of the clamping buckle is inserted into a groove of the shoe heel, the other end of the clamping buckle is connected with the pull rod through an elastic component, the shoe sole is provided with a limiting fixing block, and the limiting fixing block is clamped to the portion, inserted into the shoe heel, of the clamping buckle. On the basis of the lever principle, the space and size needed by the clamping buckle and the pull rod are small, the space of the shoe sole is saved, the shoe sole and shoe heel space utilization rate is proper, and the thickness and the strength of the shoe sole are enhanced; the whole structural technology is simple and practical; by arranging an elastic component, the phenomenon that the shoe heel is disengaged and vibrates after the clamping buckle moves can be avoided, and the fixing and limiting effects are further achieved.

This application provides the NiFe‑LDH@CoS x / NF composite material and its preparation method and application, the preparation method comprises: adding iron source and urea to deionized water, stirring to obtain the first reaction mixture; mixing the first reaction mixture with foamed nickel (NF) at 80-120°C Under hydrothermal reaction for 6-10 hours, the NiFe-LDH / NF composite material is obtained; the cobalt source and the sulfur source are dissolved in deionized water to obtain a second reaction mixture; the NiFe-LDH / NF composite material is immersed in the second reaction mixture, NiFe‑LDH@CoS was obtained by electrochemical deposition x / NF composites. NiFe‑LDH@CoS prepared by the above method x The / NF composite possesses excellent OER and HER properties simultaneously, and can be used as a bifunctional catalyst for total water splitting.

The invention discloses an auxiliary presentation device for mulberry winter bud medicine treatment, which belongs to the technical field of mulberry winter bud medicine application. An auxiliary presentation device for mulberry winter bud medicine treatment comprises a conical inner cylinder and a conical outer casing. The conical inner cylinder includes a A pair of semi-conical arc plates, a pair of elastic cloth strips are fixedly connected between the pair of semi-conical arc plates, the invention can be fixed on the branches of mulberry trees for a long time, so as to realize the long-term and continuous application of medicines to the winter buds of mulberry trees , at the same time, it has applicability for different sizes of mulberry branches and mulberry winter buds, and in the long-term experimental process of winter buds, it can carry out multiple supplementary additions of medicaments without disassembly or replacement. The auxiliary treatment process can greatly reduce the workload of the staff, improve the efficiency of chemical application, and enable the winter buds to absorb the chemical continuously and stably by themselves, facilitating the normal and stable growth of the winter buds.

The invention belongs to the technical field of SPR sensors, in particular to a graphene / gold / D-type plastic optical fiber SPR sensor and a preparation method. The method includes the following steps: (1) opening a groove-shaped sensing area on the fiber to prepare a D-shaped fiber; (2) growing graphene on the copper foil by chemical vapor deposition, and using thermally evaporated Method directly vapor-deposit gold film on graphene to obtain gold / graphene / copper foil composite layer; (3) corrode the copper foil in gold / graphene / copper foil composite layer, and obtain Transfer to D-fiber, voilà. In the present invention, gold is directly vapor-deposited on the graphene by thermal evaporation, so that the graphene and the gold film are perfectly bonded, and then the graphene / gold that has corroded the copper foil is transferred to the D-shaped plastic optical fiber. The structure of gold plus graphene is realized on the optical fiber. The graphene / gold / D plastic optical fiber SPR sensor prepared by the invention has the characteristics of high recognition sensitivity to complementary and non-complementary DNA chains.

The invention belongs to the technical field of easily released release film, and in particular, relates to an anti-static release film for a high-stickiness adhesive tape. The anti-static release film includes a thin film base material and a silicone oil release agent attached to the surface of the base material, wherein the silicone oil release agent is prepared from the following raw materials: vinyl silicone oil, hexamethyl-disilazane, epoxy acrylate resin, silica particles, a platinum catalyst, cyanoacrylate resin, 2-hydroxy ethyl acrylate, fumed silica, polyethylene glycol, and ethyl acetate. Compared with the prior art, the anti-static release film has the following advantages that a variety of release agents are mixed and are subjected to reaction to obtain the silicone oil release agent having close molecular structure and stable performance; the silicone oil release agent makes tight and firm contact with the thin film base material, is not easy to fall off and has the release force of 4-5 g / in; the anti-static release film makes contact with the high-stickiness adhesive tape, the contact area is small, separation is easier, the surface of the high-stickiness adhesive tape has no residues after separation, the yield rate of products is improved, and the anti-static release film is suitable for promotion and use.

The invention discloses a curb mold facilitating installation of an airfield runway guide light. The curb mold facilitating installation of the airfield runway guide light comprises an upper mold body and a lower mold body. The upper mold body comprises an upper cover and an upper shell, first fixing holes and second fixing holes are formed in the four corners of the upper cover and the four corners of the upper shell correspondingly and fixedly connected through bolts, a first pouring opening is formed in the bottom end of the upper cover, a first trapezoid groove is formed in the middle of the upper shell, and a first line clamping groove is formed in the bottom of the first trapezoid groove. The lower mold body comprises a lower cover and a lower shell, and third fixing holes and fourth fixing holes are formed in the four corners of the lower cover and the four corners of the lower shell correspondingly. The effect of convenient installation is realized by arranging the first trapezoid groove and a second trapezoid body. The effect of convenient installation of wires is realized by arranging the first line clamping groove and a second line clamping groove. A curb can make more tight and stable contact with the ground by arranging contacts. Therefore, the problem of installation cost of the curb and the guide light of an airfield runway is effectively solved.

The invention discloses a stray corrosion ice layer inhibition method in electrochemical processing, and belongs to the technical field of electrochemical processing. A low-temperature environment isutilized, the stray corrosion effect of stray current in the processing process is reduced by covering the non-processing surface of a workpiece with an ice layer, and the quality of the workpiece processing surface is improved. The stray corrosion ice layer inhibition method comprises the following steps that (1) an ice layer insulating protective film is prepared on the surface of a workpiece tobe processed; (2) the working environment is kept at a low temperature, and the surface needing to be processed is subjected to electrochemical processing through a processing channel; and (3) afterprocessing is finished, the temperature of the processing environment is raised, and after the ice layer is melted, the workpiece is taken out.