65results about How to "No falling off" patented technology

The invention provides a body and panel connecting device and an air purifier with the same. The body and panel connecting device comprises hooks, hook seats, first fasteners, first fastener seats and elastic structures; the hooks are arranged on a panel, and the hook seats are matched with the hooks and are arranged on a body; the first fasteners are arranged on the panel, and the first fastener seats are matched with the first fasteners and are arranged on the body; the elastic structures are arranged on the inner side of the panel. The body and panel connecting device and the air purifier have the advantages that the body and panel connecting device is simple in structure and convenient to use, and an operator only needs to easily push extending portions of the first fastener seats via the elastic structures, so that the panel can be conveniently and quickly detached.

The invention provides a method for target material component welding. The method comprises the following steps that an aluminum target material and a copper back board are provided; silver is plated on a face to be welded of the aluminum target material to form a silver middle layer; the aluminum target material with the silver middle layer and the copper back board are placed in a vacuum bag, the silver middle layer is located between the aluminum target material and the copper back board, and the vacuum bag is arranged in a welding device; the hot isostatic pressure technology is used for welding the aluminum target material with the silver middle layer and the copper back board together to form a target material component; after welding is completed, the vacuum bag is cooled and removed, so that the target material component is obtained. The method is high in welding efficiency, the formed target material component is good in welding binding rate, high in welding strength and small in deformation, the internal organization structure of the aluminum target material in the target material component meets the sputtering requirement, and therefore requirements for long-time stable production and using of target materials can be met.

The invention relates to a wood anti-corrosion mildew-proof treatment method. According to the method, a bottom plate, a conveying belt and a waxing device are included; the conveying belt is arrangedin the middle of the upper end of the bottom plate; the waxing device is arranged above the conveying belt; and the lower end of the waxing device is arranged on the bottom plate. By means of the method, the following problems are solved: when conventional equipment is used for waxing for corrosion prevention and mildew prevention treatment on the wood, the wax liquid is usually not uniformly coated, and the surface of the wood is often not waxed fully, so that the wax layer on the surface of the wood is prone to falling off to enable the wood to deform and twist due to be susceptible to moisture, and subsequent processing and use of the wood is affected disadvantageously; poor coating effect and low coating efficiency of the conventional waxing equipment when being used for waxing the wood lead to increase in wood processing cost; and meanwhile, due to the fact that the wax liquid is prone to solidifying when being cooled, the circulation effect of the wax liquid is influenced, and the wax coating efficiency is reduced.

The invention belongs to the field of building coatings and particularly relates to a functional inorganic mineral wall material. The functional inorganic mineral wall material is prepared from, by mass, 20-40 parts of ground calcium carbonate, 10-20 parts of ash calcium powder, 0-10 parts of washed kaolin, 0-10 parts of metakaolin, 0-10 parts of calcined kaolin, 0-5 parts of calcium bentonite, 5-15 parts of diatomaceous earth, 0-10 parts of zeolites, 10-30 parts of modified gypsum, 0-20 parts of magnesium oxide, 0-10 parts of magnesium sulfate, 0-5 parts of titanium dioxide, 0-5 parts of white cement, 0-5 parts of sepiolite, 0-5 parts of attapulgite, 2-5 parts of talcum powder, 0-5 parts of wollastonite, 0.5-1 part of water-retaining agent and 0-2 parts of nano titanium dioxide photocatalyst.

The invention discloses a surface nitriding treatment process of a hard alloy cutter. The process includes the steps that firstly, the hard alloy cutter is placed in a solution to be ultrasonically cleaned for 10-20 min, oil dirt, dust, sweat stains and the like are removed, and the cutter is blow-dried with hot air; then the cleaned tool and an energizer are placed in a vacuum furnace to be vacuumized, and then heating is started for temperature rise; and finally when the temperature in the furnace reaches the specified temperature, ammonia gas of certain pressure is introduced, the ammonia gas is replaced at set intervals, heating is stopped after heat preservation is carried out for a period of time, and the cutter is cooled to room temperature in the furnace. A nitrided case with certain thickness can be formed on the surface layer of the hard alloy cutter treated through the surface nitriding treatment process, the nitrided case is high in hardness and good in corrosion resistance and abrasion resistance, is generated in the surface layer of a base body, and cannot fall off, and the service life of the tool is greatly prolonged; and meanwhile, the process is easy to operate, and the preparation cost is low.

The invention discloses a rear-mounted grinding wheel main shaft motor of a plane grinding machine, which is characterized by comprising a shell, a main shaft, a permanent magnet rotor assembly, a stator assembly, an encoder, a front end cover and a rear end cover, wherein the main shaft is arranged in the shell through a bearing I and a bearing II; the stator assembly is arranged in the shell and is located at the rear end of the shell; the permanent magnet rotor assembly is arranged on the main shaft; the front end cover is arranged at the front end of the shell; the rear end cover is arranged at the rear end of the shell; the encoder is arranged at the rear end of the main shaft and is connected with an external driver; the main shaft extends from the front end cover; the part of the main shaft is a conical surface, which extends from the front end cover; and the conical surface of the main shaft is provided with a grinding wheel grinding head. The rear-mounted grinding wheel main shaft motor of the plane grinding machine is capable of expanding the rotation angle of the grinding head and expanding the application range of the plane grinding machine.

The present invention discloses a kind of metal pot and its handle connecting method. The metal pot includes one pot body, one pot cover and one handle, and features the increased welding connection block between the pot body and the handle. During connection, the welding connection block is first coated with metal welding powder to its two sides, then set between the handle and the pot body and the handle is heated for welding the handle, welding connection block and the pot body together. The pot thus produced has good look and firm connection of handle.

The present invention discloses a miner's lamp which includes a lamp head assembly, an electric power assembly and wires for electrically connecting the lamp head assembly and the electric power assembly; the lamp head assembly includes a housing, an illumination lamp and an illumination lamp switch assembly; the wall of the housing is disposed with a mounting hole, the illumination lamp switch assembly includes a microswitch disposed in the housing, an elastic sealing cover and a position bolt coupled with the mounting hole; the touch handle of the microswitch lies in the mounting hole, the sealing cover encloses the touch handle of the microswitch, the position bolt fixes the sealing cover in the mounting hole. The invention has the advantages of good safety, convenient maintenance and long use life.

The invention relates to a wear-resisting low-temperature-resisting PUR logistics conveying belt and a preparation method thereof. The logistics conveying belt comprises a middle framework fabric layer and a PUR coating immersed at the upper and lower surfaces of the middle framework fabric layer; the thickness of the logistics conveying belt is 4-5 mm, and the surface shore hardness is 80-90 HA. When the logistics conveying belt is prepared, the PUR is immersion is performed on a polyester fiber base cloth after the pre-molding treatment by a dual-roller impregnator; then the polyester fiber base cloth is repeatedly extruded for 2-3 times at 110-120 DEG C; PUR solidification is carried out under the condition of constant temperature and humidity, the back face of the conveying belt is polished, and thus the PUR logistics conveying belt is prepared. Compared with prior art, the polyester fiber base cloth is prepared by PUR immersing technique; the low-temperature resistance thereof is better than that of the like product immersed by traditional PVC; the logistics conveying belt can be used for a long term under 40 DEG C low-temperature environment; the PUR logistics conveying belt effectively solves the technical problems that the logistics conveying belt is big in surface hardness, hardened and off-line ran, easy to break, short in service life, bad in wear resistance, and other technical problems of the logistics conveying belt under the low-temperature environment.

The invention relates to an ionic liquid modified bar code carbon strip back coating which is prepared from the following raw materials in parts by weight: 10-50 parts of an acrylic monomer, 0.5-2 parts of a silane coupling agent, 0.5-3 parts of an ionic liquid containing double bonds; 15-30 parts of organic silicon, 13-73.5 parts of an organic solvent and 0.5-2 parts of a catalyst. The inventionprovides the ionic liquid modified bar code carbon strip back coating and a preparation process. By means of block polymerization, the ionic liquid containing double bonds is introduced into a high molecular chain of the polyacrylate back coating, and the high molecular back coating with low resistivity is coated with a bar code carbon strip, so that static electricity generated and accumulated onthe carbon strip are reduced effectively, and therefore, the printing using quality of the back coating is guaranteed.

The invention discloses a deep-layer high-hardness composite surface quenching reinforcing method of metal and alloy members and belongs to the field of surface heat treatment. The method comprises the steps: firstly, obtaining an induction quenched hardened layer with a depth of 2 to 20mm, a grain size of 7 to 10 levels and a hardness value of 45 to 62HRC on the surface of a part through induction heating pre-quenching; then utilizing machining to make the part reach an assembling accuracy and a finish degree required by the surface; finally, utilizing high energy beam surface phase change quenching to obtain a high energy beam quenched hardened layer with a depth of 0.1 to 2.5mm, a grain size of 10 to 16 levels and a hardness value of 62HRC on the surface of the part. The obtained composite hardened layer disclosed by the invention is prepared from the induction quenched hardened layer on the secondary surface layer and the high energy beam quenched hardened layer on the surface layer; thus, surface wear resistance and fatigue life of the metal and alloy materials are improved, and a strict requirement of the modern industry on the metal and alloy materials is met.

The invention relates to a construction method of a cast-in-place concrete composite floor slab. A concrete composite floor slab forming device is adopted and comprises a bottom rack, a placing mechanism and a feeding mechanism. The construction method can solve the following problems that in the traditional cast-in-place concrete composite floor slab preparing and forming process, one cast-in-place concrete composite floor slab preparing and forming device can only produce cast-in-place concrete composite floor slabs of one specification, cast-in-place concrete composite floor slabs of different specifications are usually needed on a construction site, and therefore cast-in-place concrete composite floor slab preparing and forming devices of different models are needed, the production cost is high, the occupied area of the devices is large, and the construction progress is affected; and in the traditional cast-in-place concrete composite floor slab preparing and forming process, due to the fact that in the concrete pouring process, contact between concrete and aggregate is possibly incomplete, the concrete is not in complete contact with the aggregate after standing and solidifying, and the cast-in-place concrete composite floor slab is prone to being broken.

The invention provides a preparation method of a lithium-silicon alloy negative electrode and a sulfide all-solid-state battery. The preparation method comprises the steps of preparation of lithium-silicon alloy powder, preparation of a lithium-silicon alloy pole piece and preparation of the sulfide all-solid-state battery. The lithium silicon alloy negative electrode and the sulfide solid electrolyte can easily generate a LixSiSy layer with high ionic conductivity and low impedance to serve as an SEI film, so that an interface between the solid electrolyte and the negative electrode is stabilized, growth and formation of lithium dendrites are inhibited, expansion and shrinkage of the negative electrode in the charging and discharging process are avoided, and the service life of the solid electrolyte is prolonged. Therefore, the capacity, the cycling stability and the charge-discharge efficiency of the sulfide solid-state battery are improved, and the method has a wide application prospect.

The invention discloses a marine travelling crane relating to the technical field of manufacturing of the marine travelling cranes. The marine travelling crane comprises two guide rail beams provided with longitudinal guide rails, a travelling crane transverse beam which moves on the two longitudinal guide rails through walking wheels, and hoisting winch systems arranged on the travelling crane transverse beam, wherein racks are arranged at the bottoms of the guide rail beams; each of the two ends of the travelling crane transverse beam is at least provided with one walking small gear driven by a motor; the walking small gears are engaged with the racks; a synchronizer is arranged between the racks at the two ends of the travelling crane transverse beam; and the travelling crane transverse beam is provided with the two hoisting winch systems. Compared with the prior art, the marine travelling crane has the advantages that the problems that the hoisting accuracy and the hoisting reliability of an existing marine common travelling crane are poor can be solved.

The invention discloses a new structural DC charging gun, comprising a wiring tube and a screw nut, wherein the upper left side of the wiring tube is provided with the screw nut; the wiring tube is sleeved with the screw nut; the upper left side of the screw nut is provided with a wiring terminal; the upper left side of the wiring terminal is provided with a housing; and the upper left side of thehousing is provided with a plug connector. In the new structural DC charging gun of the present invention, a conventional engagement mode of the wiring terminal is changed to the current threaded rotation connection mode, so that the stability of the wiring terminal can be better improved. Thus, a wiring terminal falling phenomenon caused by complicated end line and disordered arrangement in thewiring terminal is avoided, thereby avoiding greater dangers. A high-temperature-resistant layer is applied to the outer side of the housing, so that the charging gun cannot burn due to excessively high temperature during charging, and the service life of the charging gun is prolonged.

The invention relates to the technical field of power distribution protection accessory devices, in particular to an anti-falling drop-out fuse, which ensures that a fuse tube reliably falls off afterbeing fused and does not fall off to the ground, so that the situation that equipment or electric power cannot be recovered in time due to the damage of the fuse tube is prevented, and the practicability is improved. The fuse comprises an insulator, an upper mounting rack, a lower mounting rack and the fuse tube. The upper mounting rack and the lower mounting rack are respectively mounted at thetop and the bottom of the insulator; an upper static contact and a lower static contact are respectively arranged on the upper mounting rack and the lower mounting rack; the top and the bottom of thefuse tube are respectively provided with an upper moving contact and a lower moving contact. An elastic spring and a fixed bolt are further included. The lower mounting rack is provided with an arc-shaped guide groove, the bottom of the arc-shaped guide groove is provided with a limiting protrusion, the lower moving contact is provided with a rotating shaft, the rotating shaft is rotatably arranged in the arc-shaped guide groove, the elastic spring is of a U-shaped structure, and the front side and the rear side of the left end of the elastic spring are provided with a front pressing piece anda rear pressing piece respectively.

The invention discloses a water quality detector which comprises a floating base (1). A plurality of fixing holes (2) are formed in the floating base (1), a detection device (3) is arranged in one fixing hole (2), and balance weight devices (4) are arranged in the remaining fixing holes (2). A groove (5) formed in the side face of each fixing hole (2) is further formed in the upper surface of thefloating base (1), a locking device (6) is arranged in each groove (5), a first clamping groove (7) matching each locking device (6) is formed in the side wall of the detection device (3), and a second clamping groove (8) matching each locking device (6) is formed in the side wall of each balance weight device (4). The water quality detector has the characteristic that the mounting firmness can beeffectively improved.