48results about How to "Strong and stable" patented technology

The invention discloses a detection performance testing method and device for a photoelectric detection system of a laser radar. According to the invention, with a tungsten halogen lamp and a gratingmonochromator, a testing light signal with the precisely adjustable wavelength and strength is outputted; and an echo signal received actually by a laser radar is simulated from the aspects of wavelength and strength. On the basis of combination of silicon and indium-gallium-arsenide standard detectors, performance indexes like an optical transmittance, an input light intensity-output voltage response curve, and a linear response range of the photoelectric detection system of the laser radar are measured simultaneously. Relevant test results can be used for assisting in the parameter design ofthe photoelectric detection system of the laser radar, so that the installation and calibration quality of the photoelectric detection system of the laser radar is improved and the good quality of the measurement data during the application process of the laser radar is ensured.

The invention relates to a railway industry and electricity integrated electric switch device with a central locking polar integrated control unit. A high-strength anti-retreating moving lock mechanism, an integrated visible lock checking expression mechanism, a closed oil immersion overload unloading double speed transmission mechanism, a double speed, rapid stopping and high-efficiency permanent magnet direct-current motor and the like are integrated to form a compact non-squeezable central locking electric switch machine, wherein the high-strength anti-retreating moving lock mechanism is composed of a ball iron box seat/a heavy-duty bearing/an upper rack moving lock rod/a short and thick tooth crest lock; a lock checking rod/a direct-acting contact expression switch/a four-head lock checking block/a spiral starting disk/an axial quick-acting ring which are flatly placed and connected by body separation form the integrated visible lock checking expression mechanism; the closed oil immersion overload unloading double speed transmission mechanism integrates a 2K-H displacement and variable level differential transmission shaft with multiple tooth differences and short teeth, a stopping output wheel shaft with an eccentric bushing hammer; the compact central locking electric switch machine which can not be squeezed, a lengthened rail brace slide plate ( base rail/ switch tie) central multi-lug insulation hinge, a crank and straight linked arm and a linked switch rail and point rail form an industry and electricity integrated squeezable and non-squeezable unit by means of a zero-clearance sleeved elasticity group pin and a double-port microgap hinge, low speed turnout unitization of single opening and single action, double slip separated action, hump double action and the like is achieved, a intermediate speed and high speed turnout switch rail and a point rail are synchronous in sections and combined with combination unitization to form the safe, reliable, advanced, adjustment-free, protection-free and industry and electricity assembled power-driven turnout of the whole transmission and whole spreading central locking electrode control device.

The invention discloses a cement nail gun, and belongs to the technical field of fastening. The cement nail gun comprises a cylinder; a piston module is slidingly arranged in the cylinder, and is usedfor compressing air at the back end of the piston module in the moving process and compressing the front end of the piston module to form a vacuum cavity; a collision head is arranged at the front end of the piston module; a collision pin is arranged at the front end of the collision head; the back end of the piston module is connected with a driving device; and the driving device is used for driving the piston module to move in the cylinder and driving the collision pin to move. Preferentially, the driving device comprises a rack pull rod; a driving gear is arranged on the outer side of thecylinder; and the driving gear is matched and engaged with the rack pull rod. The atmospheric pressure difference between the front and back ends in the cylinder is used as power for driving the piston to move. Mechanical structures are adopted in the whole process, and no gunpowder or no air compressor is used as an external power source, so that higher environmental protection and safety are achieved, the use is more convenient, and an external power supply is not needed.

The present invention discloses HBV-DNA kit for quantitative enzyme-linked immunological measurement of hepatitis B core antigen and its preparation process, and belongs to the field of molecular biology and immunological diagnosis reagent. The kit includes: fluorescent quantitative HBV-DNA serum standard, HBsAb polyclonal antibody pre-coated standard enzyme reaction strip, HBcAb polyclonal antibody pre-coated standard enzyme reaction strip, diductor, enzyme labeling core antibody, substrate developer, positive contrast, negative contrast and terminating liquid. The present invention can measure HBV-DNA content in serum specifically and accurately, and has the advantages of simple operation, high sensitivity, high specificity, high stability, etc.

The invention discloses a grinding slice of a defibrator, wherein grinding teeth in a crushing region are separated from those in a coarse grinding region, a ring-shaped buffering deslagging slot is formed between the grinding teeth of the two regions, and the grinding teeth in the crushing region are arc-shaped. According to the grinding slice of the defibrator, the grinding teeth can be effectively prevented from being damaged by hard impurities, the efficiency is improved, the service life of the grinding slice is prolonged, and the power consumption is reduced.

The invention discloses a hydraulic flange of a nickel alloy pipe. The flange comprises a base, a mounting base, a hydraulic cylinder, a hydraulic column, a flanging die, a pipe body, a box body, a mounting assembly and a clamping device, wherein the output end of the hydraulic cylinder is connected with the hydraulic column, the other end of the hydraulic column is connected with the flanging diethrough the mounting assembly, and the box body is connected with the pipe body through the clamping device; a first connecting piece is connected with one end of the hydraulic column, and a second connecting piece is connected with the flanging die; two first connecting rods are arranged, are correspondingly connected with second connecting rods in a sleeve mode and are connected to the second connecting rods in a sliding mode, first springs sleeve the second connecting rods, fixing blocks are arranged on the inner walls of the other ends, facing the first connecting piece, of the first connecting rods, and through holes matched with the fixing blocks are formed in the second connecting piece. The flange has the advantages of being capable of facilitating replacement and maintenance of the flanging die at the later stage and good in firm stability during clamping and fixing of a pipe.

The invention discloses a vortex generator for a blade of a wind driven generator. The vortex generator comprises a base and two molded surfaces, wherein the molded surfaces are arranged on the base in a mirror symmetry mode. Each molded surface is provided with a convex arc edge, a sweepback bevel edge and a straight edge, wherein the straight edge is fixedly connected to the base; the front end of the straight edge and the front end of the convex arc edge intersect to form the front end of the molded surface; the rear end of the straight edge and the bottom end of the sweepback bevel edge intersect to form the rear-end bottom corner of the molded surface, and the rear end of the convex arc edge and the top end of the sweepback bevel edge intersect to form the rear-end top corner of the molded surface. A vortex generated by the vortex generator for the blade of the wind driven generator is high in strength and stable, and therefore the lift and the lift-to-drag ratio of the blade of the wind driven generator can be effectively increased.

The invention provides an ultra-high temperature filter material, and particularly relates to the field of filter material production. The ultra-high temperature filter material comprises a base clothlayer, wherein the base cloth layer is sequentially provided with a pre-oxygen composite wire layer, the base cloth layer is prepared from a fiber material and a surfactant by processing; the fiber material comprises the following raw materials in percentage by weight: 15-25% of polytetrafluoroethylene fiber, 20-30% of polyimide fiber, 15-20% of polyisophthaloyl metaphenylene diamine fiber, 40-50% of pre-oxidized fiber, and 5-25% of polyolefin elastic fiber, and the surfactant comprises the following raw materials in percentage by weight: 25-35% of a polytetrafluoroethylene emulsion, 10-15% of a preservative, 6-10% of a waterproof agent, 2-6% of a coupling agent, 4 to 6% of polyvinyl alcohol and the balance of water. The ultra-high temperature filter material has the advantages of high temperature resistance, corrosion resistance and long service life.

The invention relates to the field of bolts, in particular to a laminated expansion bolt. The laminated expansion bolt comprises a T-shaped bolt body, a nut arranged on the T-shaped bolt body, a plurality of frustum expansion sleeves arranged on the T-shaped bolt body in a sleeving mode, spacer rings arranged between the frustum expansion sleeves and stepped nylon sleeves arranged on the outer sides of the frustum expansion sleeves. Due to the structure, the expansion bolt is high in installation fastening force, stable, high in fixing force and installation accuracy, free of swinging, convenient to install and capable of being used for mounting and fixing stone slabs.

A disclosed production technology for an efficient environment-friendly pesticide comprises the technological steps: (1) selecting raw materials; (2) crushing and dissolving; (3) preparing an auxiliary agent; (4) modifying; (5) enhancing medicine properties; and (6) gelatinizing. The production technology is reasonable and concise in technology and long in storage time, and the pesticide is strong and stable in effect and small in environmental pollution, and is capable of providing various nutrition fertilizers for plants.

The invention relates to the technical field of doors and windows, in particular to a sliding door for a high-rise building. The sliding door comprises a main door frame. The main door frame comprises an upper slider, a lower slider and a side rabbet. The main door frame is internally provided with a pair of sliding door leaves and a pair of fixed door leaves. The upper slider and the lower slider are in a long-strip shape extending in the left and right direction. The lower slider comprises an inner bottom supporting part, a buffering connecting bearing part, a middle bottom supporting part and an outer protection strengthening supporting part, all of which are integrally connected in sequence from interior to exterior of a room, the inner bottom supporting part and the buffering connecting bearing part are used for supporting and sliding moving of the sliding door leaves, the middle bottom supporting part and the outer protection strengthening supporting part are used for supporting the fixed door leaves, and the inner bottom supporting part is provided with a guide rail extending in the left and right direction. The upper slider comprises an inner top limiting part, an upper transition connecting part, a middle top limiting part and an upper outer protection strengthening limiting part which are integrally connected from interior to exterior of a room in sequence and are opposite to the inner bottom supporting part, the buffering connecting bearing part, the middle bottom supporting part and the outer protection strengthening supporting part in the vertical direction. The sliding door is simple and firm in structure, low in cost, long in service life and high in wind pressure resisting capability.

The invention discloses a walnut grafting fast holding clip that comprises a first clamp body, a second clamp body and a locking device; the first clamp body comprises a first clamp portion in an arc-shape and a first connecting portion arranged on one end of the first clamp portion; the second clamp body comprises a second clamp portion in an arc-shape and a second connecting portion arranged onone end of the second clamp portion; the arc opening directions of the first clamp portion and the second clamp portion are opposite to each other; the connecting portion between the first clamp portion and the first connecting portion of the first clamp body is hinged to the connecting portion between the second clamp portion and the second connecting portion of the second clamp body; a U-type opening support slot is arranged on the end of the second connecting portion of the second clamp body, and a spacing curve edge that bends to the first connecting portion is arranged on the end of the second connecting portion; the locking device moves on the first connecting portion and can be clamped in the support slot. The walnut grafting fast holding clip is stable and reliable in usage, easy to clamp, convenient to use, and can improve the working efficiency.

The invention relates to the technical field of doors and windows, in particular to a single-casement side-hung window which comprises an upper fixing edge rabbet and a lower fixing edge rabbet. An upper movable casement material for fixing the upper portion of window glass leans on the lower side of the upper fixing edge rabbet, a lower movable casement material for fixing the lower portion of the window glass leans on the upper side of the lower fixing edge rabbet, the upper fixing edge rabbet comprises an inner upper main pipe with a square inner cavity, an upper buffer blocking rubber strip with an oblique portion is mounted on the lower portion of the inner upper main pipe, and the lower fixing edge rabbet comprises an inner lower main pipe with a square inner cavity. The single-casement side-hung window has the advantages of simple and firm structure, low cost, good sealing effect and long service life.

The invention discloses an assembled lever pressing and lifting type soil sampling device. The assembled lever pressing and lifting type soil sampling device is characterized by comprising an underframe, a top frame, a longitudinal fulcrum bar, an inclined fulcrum bar, a guide plate, a pressing and lifting handle, a pressing rod component and a sampling head, wherein a bottom end of the longitudinal fulcrum bar is installed at the top of the underframe, a top end of the longitudinal fulcrum bar is installed at the bottom of the top frame, the inclined fulcrum bar is obliquely installed betweenthe top frame and the underframe, the guide plate is embedded in the inner side of the top frame, the pressing rod component is inserted into an intermediate area of the guide plate, a rear end of the pressing and lifting handle is movably installed at the top end of the pressing rod component, and the sampling head is installed at the bottom end of the pressing rod component. The assembled leverpressing and lifting type soil sampling device disclosed by the invention is stable in overall structure and convenient to disassemble and assemble, and the soil sampling depth can be freely adjustedas needed.