481results about How to "Reliable strength" patented technology

A water pump for cooling an engine in which an impeller accommodated in a pump housing provided on an engine body is mounted on an end of a rotational shaft rotatably supported on the pump housing for enhancing the reliability of the mounting strength of the impeller while avoiding an increase in cost. A fitting recess for fitting an end of the rotational shaft having an outer circumferential surface which is straight in an axial direction at least in a portion on the impeller side is provided in a central portion of the impeller. A bolt inserted into the central portion of the impeller is threaded in a coaxial direction with the end of the rotational shaft in a state that is fitted in the fitting recess.

The invention provides a nano artificial dura mater with a plurality of functional layers, which comprises a structure with at least two layers; the layer facing the brain is a hydrophobic anti-adhesion electrospun layer; and the layer back to the brain is a hydrophilic nano cytoskeletal layer. The invention also provides a method for preparing the nano artificial dura mater, which comprises the following steps: preparing an electrospun solution of a hydrophobic polymer; preparing an electrospun solution of a hydrophilic polymer; preparing the prepared electrospun solution of the hydrophobic polymer into the hydrophobic anti-adhesion electrospun layer through static spinning; and preparing the hydrophilic nano cytoskeletal layer on the anti-adhesion electrospun layer from the prepared electrospun solution of the hydrophilic polymer through static spinning, receiving a membrane structure, and obtaining the nano artificial dura mater. The mechanical features of the nano artificial dura mater can meet the requirements on tensile strength and flexibility of adaptation diseases; and the nano artificial dura mater can be freely cut as required, and has wide application prospect.

A medical multi-chamber container (1) comprising a container body (3) having first and second chambers (10, 11) for storing medicaments, a weak partition seal (20) for portioning the charmers (10, 11) from each other, and an outlet (32) fitted into the container body (3) for allowing the medicaments to be delivered from the second chamber (11), the container body (3) further comprising a weak discharge seal (21) partitioning the second chamber (11) from the outlet (32) and unsealably formed so as to allow the chambers (10, 11) to communicate with each other when used, characterized in that the unsealing strength of the weak discharge seal (21) is less than that of the weak partition seal (20).

A secondary battery comprises a bare cell including an electrode assembly composed of positive and negative electrodes and a separator, a can acting as a container for containing the electrode assembly and an electrolyte, and a cap assembly having a cap plate for covering the open upper end of the can and a lead plate coupled to a part of the cap plate, wherein an electrolyte injection hole is positioned on a side of the cap plate. The lead plate has a bottom portion which covers the electrolyte injection hole and at least a part of which is coupled to a surface of the cap plate. Additionally, a part of the lead plate, which corresponds to the electrolyte injection hole of the bottom portion, is removed to form a hole so that a cap which seals the electrolyte injection hole is exposed.

The invention relates to an expanded vitrified micro-bead fireproof thermal-insulation board and a preparation method thereof, belonging to the field of construction materials. In the invention, inorganic expanded vitrified micro-beads, which are used as main raw materials, are combined with an organic binder, molded in a die and sintered, so that the expanded vitrified micro-beads are bound to form a compact single-layer board; and meanwhile, in the sintering process, the content of organic matters in the thermal-insulation board is greatly reduced to further enhance the fire resistance of the fireproof thermal-insulation board, thereby obtaining the fireproof thermal-insulation board with favorable comprehensive properties. The preparation technique of the expanded vitrified micro-bead fireproof thermal-insulation board is simple; and the expanded vitrified micro-bead fireproof thermal-insulation board has the advantages of low coefficient of thermal conductivity, high strength, excellent fire resistance, low water absorptivity, favorable thermal insulation effect, long service life and low volume weight, and can not deform or deteriorate when being used for a long time, therebybeing a green, economical and environment-friendly fireproof thermal-insulation material.

A flange assembly, a coupling flange, and its assembling method thereof are disclosed. Stiffening plates (2) are located on the front side of the flange plate (1). Equilibrium contact surfaces (211) are set up on the front end surfaces of stiffening plates. The pressure stress bending moment created by the equilibrium contact surfaces offsets the pulling stress on the steel pipe wall and reduces the hoop stress of the steel pipe. This provides reliable bonding strength and ensures that the tensile rigidity remains unchanged under circulating dynamic load. This coupling flange is especially suitable for the connection of large-scale steel pipes such as the cylindrical pylons of large-scale wind power generators. The coupling flange can save steel consumption, reduce machining difficulty, and thus greatly reduce the manufacturing and assembling costs.

The invention provides a door body with a power-assisted handle, comprising a main body, an end cover, a support, the power-assisted handle and a link mechanism, wherein, the power-assisted handle is arranged on the main body and close to the end cover, the power-assisted handle is coupled on the support through a power-assisted handle shaft and can rotate around the power-assisted handle shaft; the link mechanism penetrates through the thickness direction of the door body, and the link mechanism is connected with a link articulated block on the power-assisted handle to prop against the side of a refrigerator body while the power-assisted handle is pulled; and the link mechanism further comprises a connection part and a link part which are connected together, the connection part is connected with the link articulated block, and the length of the link part can be adjusted. The power-assisted handle and corresponding mechanisms provided by the embodiment of the invention can be completely preinstalled before foaming of the door body without drilling holes on the door body and damaging a door shell and a foaming layer structure, thus achieving simple assembly technology, easy operation, reliable strength, and firmness and durability.

The invention concerns an outer hexagon round screw and a method for production of the screw. The screw cap is formed here essentially in the kind of a Torx head, with an outer hexagon round contour (5) and a flange (4) having a slope (4.1) reaching in the direction of the outer hexagon round contour (5) under an angle (alpha) thereby assuring a force engagement with a tool. The slope (4.1) of the flange (4) follows immediately to the outer hexagon round contour (5) such that the overall height (k) of the head (3) is substantially decreased, wherein at the same time the height (t1) of the outer hexagon round contour (5) assures a reliable force engagement. The production of the flange (4) and of the outer hexagon round contour (5) is performed either by scraping with a scraping tool or by head flattening or upset compressing or compression molding, wherein additionally a socket is formed in the head region. (FIG. 1).

A heat-transporting device includes a working fluid, a vessel, a vapor-phase flow path, and a liquid-phase flow path. The working fluid transports heat using a phase change. The vessel seals in the working fluid. The vapor-phase flow path includes a first mesh member and causes the working fluid in a vapor phase to circulate inside the vessel, the first mesh member including a through-hole larger than a mesh thereof. The liquid-phase flow path causes the working fluid in a liquid phase to circulate inside the vessel.

The invention relates to a drilling boom device of a two-boom hydraulic rock bolt drilling carriage. The drilling boom device comprises a drilling boom hinged support, a telescopic boom outer cylinder, a telescopic oil cylinder, a gap adjusting block, a telescopic boom, a drilling boom supporting oil cylinder, an adjusting oil cylinder, a feed mechanism, a drilling boom swing oil cylinder and a drilling boom fixing support, wherein the telescopic oil cylinder is arranged between the telescopic boom and the telescopic boom outer cylinder, the telescopic boom outer cylinder is in pivot connection with the drilling boom hinged support, and the drilling boom hinged support is fixed on the drilling boom fixing support through a pin shaft. The drilling boom supporting oil cylinder is respectively connected with the drilling boom hinged support and the telescopic boom outer cylinder through a pin shaft, the adjusting oil cylinder is respectively connected with the telescopic boom outer cylinder and the feed mechanism through a pin shaft, and the telescopic boom is arranged below the feed mechanism and connected with the feed mechanism through a pin shaft. The drilling boom device of the two-boom hydraulic rock bolt drilling carriage is compact in the whole-vehicle structure, reliable in strength, and capable of realizing the upper, the lower, the left and the right swing of the feed mechanism of the hydraulic rock bolt drilling carriage by the utilization of the connecting rod principle and stretching out and drawing back freely during construction.

The invention relates to a steel surface roughing auxiliary stirring friction welding method for aluminum and steel dissimilar material lap connection. A fine convex-concave structure is obtained on the surface of a lap connection position of a steel plate through a roughing method, heat is generated through friction and plastic deformation of a stirring head and an aluminum plate, softened aluminum alloy is combined with the convex-concave structure of the surface of the roughed steel plate, the effective combination area is increased, a brittle intermetallic compound is suppressed from being formed between aluminum and steel, and effective and high-quality lap connection is formed between the steel plate and the aluminum plate. An aluminum steel dissimilar connector with beautiful formed welding joints, a good mechanical property and reliable strength is finally obtained, the welding operation process is simple, the welding cycle is effectively shortened, and automation is achieved easily.

The invention relates to an automobile seat chair slide rail with an improved structure, and belongs to the technical field of automobile fittings. The automobile seat chair slide rail comprises a lower guide rail, an upper guide rail and a locking device, wherein the upper guide rail is in sliding fit with the lower guide rail by ball brackets, the upper guide rail is provided with lock claw grooves which are respectively in an inclined cut shape, a reinforcing bracket is additionally arranged under an upper mounting surface, the upper guide rail and the lower guide rail are respectively provided with a circular arc-shaped raceway accommodating cavity, large steel balls and small steel balls of the ball brackets roll on the circular arc-shaped raceway accommodating cavities, the insides of one pair of folding edges of the lower guide rail are provided with lock row teeth, the locking device comprises a lock block, a wrench, a connecting pin, a pull spring, a fixed block, a rotary shaft, a press spring, a wrench spring and a connecting pipe, the lock block is provided with lock claws which are matched with the lock claw grooves and the locked row teeth, the lock block is fixedly arranged on the wrench, and the wrench is arranged between the upper guide rail and the lower guide rail. The automobile seat chair slide rail has the advantages that the locking strength is high, the synchronism is high, the self-locking is avoided, the clearance is small, the sliding uniformity is high, the shaking clearance of the wrench is small, and the abnormal noise in sliding is avoided; and meanwhile, the processing and the manufacturing are convenient, the production cost is low, and the application range is wide.

A building system and method. A construction method and system is disclosed. The system includes panel members composed of foamed cement containing perlite as the only material aggregate. Each lightweight cement body is encased around its perimeter edges by a rigid frame preferably fabricated from steel C-channel or beams. Once cured, a plurality of such panels vertically disposed, arranged upon building footings, and inter-connected to serve as structure walls. The use of a special foamed cementitious mix containing expanded perlite provides lightweight panels of reliable strength and durability yet excellent thermal and sound insulation. The frames of abutting panels may be joined by welding. Reinforced concrete footings according to this disclosure are provided with a special channel running longitudinally there-along. An exposed anchor bar runs along the inside of the longitudinal channel. The wall panels have reinforcing conduits extending top to bottom in the panel frame. Tie rods situated in the conduit interiors extend beyond the conduit ends. The upper end of each tie rod is adjustably engaged with the end of the corresponding conduit, while the tie rod lower end is connected to the anchor rod on the footing. With the tie rod attached to the footing's anchor rod, the controlled tightening of the engagement of the tie rod and conduit upper ends pulls the tie rod into tension to secure the panel to the footing.

A connecting method of an aluminum steel dissimilar metal pre-coating layer relates to the connecting method of the aluminum steel dissimilar metal. The connecting method solves the problems that the prior MIG melt-brazing method is limited by the wettability between an aluminum-based brazing filler metal and a steel plate, so the spreading performance of the brazing filler metal is poor on the steel plate, and the weld formation is poor. Acetone is used for wiping the surface of the steel plate and an aluminum plate, a brush is used for coating a paste which is stirred by the mixed powder and a binder on the surface of the steel plate, a lap joint is composed of the aluminum plate at the upper part and the steel plate at the lower part after the drying of the surface of the steel plate, a MIG welding machine is utilized for passing the melted aluminum plate, the steel plate is simultaneously maintained in a solid state, the self-fluxing brazing connection is formed at one side of the steel plate, and the melt welding connection is formed at the side of the aluminum plate to carrying out the welding of the lap joint. The connecting method improves the spreading performance of the aluminum-based brazing filler metal thereon and finally obtains the aluminum steel dissimilar metal joint with the beautiful shape, excellent mechanical performance and reliable strength, and the tensile strength of the joint can achieve more than 80 percent of an aluminum base material.

A reliable and superior joining strength in entire joining parts of resin molded bodies including tilting portions is obtained by devising a shape and a size of each protrusion for welding provided in the joining parts of the resin molded bodies. In a structure of joining resin molded bodies according to the present invention, upper and lower half bodies 10 and 20 are joined with each other by means of a vibration welding method while the upper and lower half bodies 10 and 20 are being pressurized in a state in which joining parts thereof are butted into each other in a substantially entire area of the joining parts. The joining parts of the respective half bodies have vertical portions 11 and 13 and vertical portions 21 and 23 respectively vertical to a pressurizing direction and tilting portions 12 and 22 tilting relative to the pressurizing direction, and protrusions for welding 11E to 13E or 21E to 23E are provided in at least the joining part of one of the half bodies. Further, referring to a butting area of the protrusions in a butted state, the butting area in the vertical portions is set to be narrower than the butting area in the tilting portions.

The invention discloses a preparation method for a scale-adjustable nano porous metal material and belongs to the field of porous material preparation. A pore-forming material is added to superfine metal powder, compression molding of the superfine metal powder is conducted, and then the superfine metal powder is sintered in a vacuum sintering furnace to obtain the porous material. The interior of the porous material contains multiple pore scales of nano-micron-milli, and the dual-adjustment of the inside pore scale of the porous material and the surface roughness scale of a metallic matrix can be achieved by controlling the parameters such as the grain size of the metal powder, the content and grain size of the pore-forming material, the sintering temperature and the holding time and the follow-up treatment process, so that the porous material has super hydrophilicity, and the efficiency of boiling heat transferring is significantly improved. The preparation method for the scale-adjustable nano porous metal material is low in cost, easy to operate and reliable in technology; the product can be used for a wick of a heat pipe, the evaporating surface of an evaporator and other boiling phase-changing heat transferring devices, so that the preparation method for the scale-adjustable nano porous metal material has good application prospects.

In an electric power steering apparatus, in which an auxiliary steering torque is generated by an electric motor according a steering torque impressed upon a steering wheel transmitted to a rack shaft of a steering mechanism via a power transmission mechanism. The power transmission mechanism has a small diameter external gear, and an outer circumferential face thereof acts as a drive side pulley, a driven side pulley driven by the internal-external gear and a ball screw mechanism driven by the driven side pulley so as to move the rack shaft. A circular support body is concentrically provided at the external gear and an annular support body, which supports the circular support body, is concentrically provided at the internal-external gear so as to be inscribed with the circular support body.

An invert mechanism for moving parisons between a pre-forming station and a finishing forming station of a glass forming machine is disclosed. The mechanism is disposed above a cover plate of a frame of the glass forming machine. An electric motor is disposed with its horizontal longitudinal axis above the cover plate. A driven shaft of the electric motor is connected to a horizontal invert shaft by means of a transmission. Between the driven shaft of the electric motor and the transmission a planetary gear is connected.

The invention relates to an assembled reinforced-concrete framework beam-column joint adopting transverse bolt connection. The joint comprises a hidden corbel arranged on a beam of a precast column, wherein hidden corbel bolt holes are transversely reserved in the hidden corbel; a notched groove matched with the hidden corbel is formed in the front / rear side face of an end-part connection part of a precast beam and is formed in a manner that the precast beam is notched towards one side of the precast beam from the vertical axis of the precast beam, the notched groove and the hidden corbel are the same in cross-section shape, and precast beam bolt holes are transversely reserved in corresponding positions of the bottom of the notched groove; and the transverse width of the hidden corbel is half that of the precast beam, the hidden corbel is embedded in the notched groove of the precast beam along the transverse direction, bolt cushion plates are arranged at the front and rear sides of an assembly which is formed after the hidden corbel is embedded in the notched groove of the precast beam, and bolts transversely penetrate through the bolt cushion plates, the hidden corbel bolt holes and the precast beam bolt holes so as to carry out fixing. A corresponding construction method comprises the steps of precasting, mounting and filling mortar in gaps. The joint and the corresponding construction method have the advantages that the internal force transmission between the precast beam and the precast column is clear, the joint is reliable in connection, the construction operation is simple, and the construction progress is accelerated.

An improved utensil such as a knife is produced by forming integrally with the blade or other working part a tang which ultimately constitutes a substantial portion of the knife-handle including the outer hand-engaged surface of the handle, and providing the tang with an attached cover which constitutes the remainder of the utensil handle.

A rotor of a rotating electric machine includes a field core having a cylindrical boss portion, and a plurality of claw-shaped magnetic pole portions that are arranged on the outer side of the boss portion and form poles of alternately different polarities in the circumferential direction, a field winding that is wound around the outer periphery of the boss portion and generates a magnetomotive force by energization, a permanent magnet disposed between the circumferentially adjacent claw-shaped magnetic pole portions so as to have its easy axis of magnetization oriented in the circumferential direction and have its polarity coincide with the polarity of the claw-shaped magnetic pole portions which alternately appears by excitation, and a magnetic flux short circuit member having a short circuit portion that magnetically connects the claw-shaped magnetic pole portions circumferentially arranged to have different polarities.

The invention discloses a railway wagon compartment suitable for a small limitation bound. The railway wagon compartment suitable for the small limitation bound comprises a floor (1), lateral wall plates (2) located on two sides of the floor (1) and end wall plates (3) located at two ends of the floor (1). The lower portion of each lateral wall plate (2) is bent inwards to form a dip angle, connected with the floor (1) in a lap joint mode and fixed with the floor (1) through welding. The lower portion of each end wall plate (3) is bent inwards to form a dip angle, connected with the floor (1) in a lap joint mode and fixed with the floor (1) through welding. Two sides of each end wall plate (3) are connected with corresponding ends of each lateral wall plate (2) in a lap joint mode and fixed with the corresponding ends of each lateral wall plate (2) through welding. The dip angles bent inwards are arranged on the lower portions of the lateral wall plates and the lower portions of the end wall plates, so that corner posts and corner post plates in a traditional structure are cancelled. Furthermore, through the arrangement of lateral vertical columns, lateral platbands and end platbands, entire intensity of the compartment is improved. On the premise that the requirement of a railway of a small limitation bound is met, the loading capacity of the compartment is increased to the maximum limit. The railway wagon compartment suitable for the small limitation bound is easy to manufacture, small in self weight, safe and efficient in transportation.

The invention discloses a frame laminate material and application thereof in preparing a membrane electrode with a sealed frame core component. The frame laminate material has a structure of laminating a support membrane, a first adhesion layer, a frame membrane, a second adhesion layer and a protection membrane in turn. During preparing the membrane electrode with the sealed frame core component, the frame laminate is punched according to a certain rule before the preparation of an anode sealed frame and a cathode sealed frame is finished; and in the preparation process, the thickness and intensity of the frame laminate layer are enhanced in the presence of the support membrane. Therefore, the frame laminate has better processing feasibility and dimension stability; the prepared sealed frame has higher contraposition precision; and the preparation process is more easy to control. After the preparation of the sealed frame is finished, the support membrane is stripped. A catalyst layer is coated on an active region of a polymer ion exchange membrane before or after the preparation of the sealed frame so as to prepare the core component with the sealed frame; and then the core component with the sealed frame is compounded with an anode gas diffusion layer and a cathode gas diffusion layer to prepare the membrane electrode respectively.

The present invention relates to the art of railway tunnel construction technology, in particular to a built-in sliding chute construction method of a contact net of a railway large cross-section tunnel, which solves the problems of the prior chemical anchoring method, such as slow installation progress, low security and durability and unsmooth appearance. (1) a lining loop wheel machine template is provided with an opening; (2) the lining loop wheel machine is positioned; (3) after positioning the lining loop wheel machine, the stroke of a hydraulic cylinder of an arc control liner car template of the lining loop wheel machine is adjusted to the minimum position; (4) the hoop reinforcement in the position of the sliding chute and surrounding the sliding chute is dismantled; (5) the position of the sliding chute is adjusted on the lining loop wheel machine template so as to make both ends of the sliding chute aiming at a positioning hole and then fix the sliding chute and the lining loop wheel machine template through a T-head bolt; (6) then the dismantled hoop reinforcement is arranged; (7) the lining loop wheel machine is lifted and poured with reinforced cement. The present invention has the advantages of simple operation and strengthening, enhanced work efficiency, tight combination of built-in piece and concrete, smooth and pleasing appearance, no need of equipment and staff addition, thus greatly reducing the cost.

In some embodiments, the present invention provides an independently tightening collet surrounding each socket for each of a plurality of corresponding high-electrical-power prongs, wherein the collet is loosened for normal (low-insertion-force) insertion and withdrawal of the plug from the outlet. Once the plug is inserted, the collet is tightened, providing a high-contact force to lower the contact resistance and to help keep the plug from coming unplugged. In some embodiments, the plug is not “locked”, in that a tension force pulling on the plug will overcome the contact force at a point before the plug or outlet is damaged, and the plug is allowed to come unplugged. In some embodiments, engaging the collet will also provide a wiping or sliding motion between the prong and socket for each connection, thus wiping at least some dirt or corrosion away and providing a lower-resistance better electrical contact.

A coupling flange assembly for connecting steel pipes including coupling flanges having stiffening plates located on the front side of the flange plate along axial directions of the steel pipes towards a coupling surface of the steel pipe to be connected. Equilibrium contact surfaces are set up on front end surfaces of the stiffening plates. Two abutting coupling flange assemblies may be used to connect two steel pipes, and when the two steel pipes are connected, the equilibrium contact surfaces of each stiffening plate of the coupling flange assemblies will be in contact with each other on a one-to-one basis.