42results about How to "Wide range adjustment" patented technology

The invention discloses a middle-infrared waveband transmission type sub-wavelength metal grating, which belongs to the technical field of function material and device. The metal grating comprises a zinc selenide glass substrate and a metal film which is located on the surface of the zinc selenide glass substrate and is provided with a periodicity hole structure; and in the periodicity hole structure, radius r of single hole is smaller than 1/2 of hole period P, and the hole period P is 1-10mu. The middle-infrared waveband transmission type sub-wavelength metal grating uses a sub-wavelength periodicity structure of less than infrared wavelength to realize selective transmission of infrared rays in the middle-infrared waveband of 2.5-25mu, and meanwhile shields the function of microwave millimeter waveband electromagnetic wave. The middle-infrared waveband transmission type sub-wavelength metal grating has the characteristics of simple structure and easy implementation, and can be applied to infrared detection device requiring electromagnetic shielding.

The invention discloses a gas flow regulation device for a rotary spray pipe value of a solid rocket-ramjet engine. Each of a first fixed part and a rotating part is provided with one central hole andtwo arc-shaped holes in the axial direction; the front end of a transmission shell and an axial outlet section of a rear sealing head shell of a combustion chamber form a dynamic sealing structure; the tail end of the transmission shell and the head end of a spray pipe shell form a dynamic sealing structure; an outer ring of a thrust self-aligning roller bearing is mounted and fixed to the interior of a shell hole in the head end of the spray pipe shell; and the inner ring of the thrust self-aligning roller bearing is fixed to a shaft neck of the tail end of the transmission shell in a matched manner. A driving motor drives a driven gear to rotate to determine a corresponding angle of a transmission ratio, and finally, drives the rotating part to rotate at a corresponding angle relative to the first fixed part, so that the two arc-shaped holes of the rotating part and the fixed part are staggered and sheltered in the axial direction, thereby changing the effective outlet circulation area of the gas of the combustion chamber and realizing gas flow regulation with determined accuracy. The gas flow regulation device for the rotary spray pipe value of the solid rocket-ramjet engine isbetter in transmission mechanism thermal protection, more compact in structure and has higher work reliability, and can realize higher-precision and larger-range gas flow regulation.

The invention discloses a corrosion-resistant flux-cored welding wire used for gas shielded welding; the flux-cored welding wire is characterized in that the chemical components and content of the alloy powder in percentage by total weight of the wire are as follows: 0.03%-0.08% of C, 0.3%-0.7% of Si, 1.1%-1.5% of Mn, less than or equal to 0.015% of S, less than or equal to 0.02% of P, 0.2%-0.5% of Cu, 0.4%-0.8% of Cr, 0.2%-0.6% of Ni, 0.03%-0.1% of Ti, 0.02%-0.10% of Sb, and the balance of iron and unavoidable impurity; and meanwhile, the ratio of Cu and Sb elements is controlled to be within the range of 4.0-8.0. The wire deposited metal and the welded have excellent mechanical property, the deposited metal has the tensile strength of more than 550MPa and has the impact toughness of more than 60J at (-40) DEG C. The gas shielded welding wire has the combination property of air-corrosion resistance and sulphuric acid dew point corrosion resistance, and meanwhile, the wire is wide in welding parameter adjustment range, stable in welding process and attractive in the formed welding line, so that the wire is beneficial to the all-position welding.

The present invention relates to an apparatus for cooling hot steel plate applied for controlled cooling of hot steel plate, obtained by hot rolling, while processing it constrained by constraining rolls and obtaining a steel material excellent and uniform in shape characteristics and provides a method of arranging and setting spray nozzles enabling uniform cooling in a direction perpendicular to processing and provides a method of arranging and setting spray nozzles of a spray cooling apparatus using two or more types of nozzles differing in amounts of water and spray regions to obtain a broad range of adjustment of amounts of water, wherein the spray nozzles are arranged so that a value of an n power of the impact pressures of the cooling water sprayed from the spray on the cooling surface integrated in the processing direction between pairs of constraining rolls becomes within −20% of the highest value in the direction perpendicular to processing,

• • where, 0.05≦n≦0.2

The invention belongs to the field of magnetostriction double-stage precise driving, and particularly relates to a magnetostriction type double-stage displacement regulating mechanism for multiple spliced mirror surfaces by taking a magnetostriction material as a core element. The mechanism comprises three same groups of a double-stage displacement regulating mechanism, elastic steel, a flexible rubber block, a central supporting seat, a central supporting rod and a supporting substrate; and each double-stage displacement regulating mechanism comprises an electric cylinder, a supporting plateand a magnetostriction actuator. Most of mirror surface regulating mechanisms developed by using a magnetostrictive effect principle in the prior art can only realize one-stage regulation for displacement; however, the magnetostriction type double-stage displacement regulating mechanism for multiple spliced mirror surfaces by taking the electric cylinders as one-stage rapid driving and the magnetostriction actuators as two-stage precision driving is designed for the disadvantages of an existing spliced mirror surface micro displacement regulating mechanism, so that the problem that quick large-scale regulation and precision positioning cannot be carried out simultaneously when sub-mirrors are spliced is solved.

The invention provides a special pulley construction device and a special pulley construction method for a cable duct. The special pulley construction device comprises a vertical bracket arranged on aside wall, the lower part of the side wall is filled with concrete, a supporting part is arranged on the upper part of the side wall, and a crossed rod group is arranged above the vertical bracket. When the device is used for construction of the cable duct at a certain height, a material needs to be placed in the cable duct. When the material at a low height is released, a steel wire rope is suspended through a pulley to release the material at the lower end, so that the material can be placed to an appointed position precisely. In a construction process, if the material needs to be releasedat a high height, a vertical oil cylinder jacks a pulley bracket upward, so that the pulley bracket is lifted to a proper preset height, the material and the release position are properly separated, the material is released in position precisely, and the material released at the high height is prevented from being scattered.

The invention relates to a material supply device. The material supply device comprises a storage unit, an extruding part, a supply unit, a drive part and regulating units, wherein the extruding part can be supported on the storage unit in a movable mode; the supply unit is positioned below the storage unit and is opposite to the extruding part; and certain gap is formed between the supply unit and the storage unit. The two ends, in the length direction, of the storage unit are fixedly connected with the regulating units for regulating height of the storage unit. The supply unit is fixedly arranged on the drive part which can drive the supply unit to perform linear reciprocating motion. According to the material supply device provided by the invention, a magnet sheet is put into the storage unit, the size of the gap between the storage unit and the supply unit is regulated through the regulating units, and the drive part drives the supply unit to move, so that only one magnet sheet drops into the supply unit every time, and therefore, automatic supply of single magnet sheet is realized, manual operation is replaced, efficiency is improved, a rejection rate of the magnet sheet is reduced, and cost is reduced.

The invention discloses a CL-FT-CL resonant current converter. The CL-FT-CL resonant current converter is composed of a half-bridge inversion circuit, a CL-FT-CL resonant circuit and a diode rectification circuit, which are connected in sequence; the converter is input through the half-bridge inversion circuit and is output from the diode rectification circuit through the action of the CL-FT-CL resonant circuit; the half-bridge inversion circuit is composed of a first switching tube and a second switching tube; the CL-FT-CL resonant circuit is composed of a first capacitor, a second capacitor, a first inductor, a second inductor, a flyback high-frequency transformer and a forward high-frequency transformer; dotted terminals of the flyback high-frequency transformer are not located at the same side; dotted terminals of the forward high-frequency transformer are located at the same side; power transmission capabilities of the converter can be expanded though the flyback high-frequency transformer and the forward high-frequency transformer; the CL-FT-CL resonant circuit can realize zero voltage switching and quasi-zero current switching of the switching tubes, and zero current switching of a diode; an input voltage range and an output voltage range of the circuit are expanded.

The invention relates to the field of wall carrying body forms, in particular to an adjustable building form convenient to install quickly and an installation method thereof, installation is easy andquick, accurate positioning of form splicing can be achieved, and the construction precision of a wall face is improved. The adjustable building form convenient to install quickly comprises a plurality of composition boards arranged in parallel, form frames are arranged on the edges of the composition boards, and the adjacent form frames are connected through a quick connecting device or an adjustable connecting device. The installation precision of the composition boards can be improved, then the wall surface precision is improved, installation is rapid, and the efficiency is higher. The invention further provides the installation method of the adjustable building form convenient to install quickly, and the installation method is applied to installation of the form.

The invention discloses a welding fixture for electronics manufacturing and an operating method thereof. Welding work involves an operating floor, a filter box, an air pump and a stabilizing base. Evenly-distributed supporting legs are fixedly installed on the lower surface of the operating floor. A lamp holder table is fixedly installed on the upper surface of the operating floor and further arranged close to the side face of the operating floor. Evenly-distributed lamp holder fixing holes and power supply holes are formed in the surface of the top end of the lamp holder table. According to the welding fixture for electronics manufacturing in the invention, the welding fabrication position can be amplified and illuminated, and the illumination and amplification position can be adjusted within a large range; and meanwhile, power supply illumination can be achieved conveniently by adoption of illuminating lamp beads, welding smokes can be dissolved and filtered conveniently, the good health of users is protected and the welding fixture for electronics manufacturing is suitable for popularization.

The invention discloses a plastic bottle clamping mechanical arm. The plastic bottle clamping mechanical arm comprises a supporting table. A movable table is arranged on the top of the supporting table in a sliding manner and provided with a supporting frame in a sliding manner. The supporting frame is fixedly provided with a rotation shaft. The rotation shaft is rotationally provided with a sleeve. The sleeve sleeves the rotation shaft and is sleeved with a first bevel gear. A first motor is fixedly arranged on one side of the rotation shaft and located below the sleeve. An output shaft of the first motor is fixedly provided with a second bevel gear. The second bevel gear is engaged with the first bevel gear. A first rod and an air cylinder are hinged to one side of the sleeve. The air cylinder is located above the first rod. A piston rod of the air cylinder is hinged to the first rod, the first rod is located above the first bevel gear, a second rod is hinged to one end of the firstrod, and a first lead screw is rotationally arranged on the first rod. According to the plastic bottle clamping mechanical arm, a plurality of plastic bottles can be clamped at the same time, the machining efficiency is improved, meanwhile, the mechanical arm can be adjusted within a large range, multi-direction machining of the plastic bottles is achieved, and usage is convenient.

A load leg adapted for a child safety seat includes a first telescoping member, a second telescoping member, a third telescoping member, a first engaging assembly, a second engaging assembly, and an operating member. The first engaging assembly is movably disposed on the first telescoping member for engaging with or disengaging from the second telescoping member. The second engaging assembly is movably disposed on the second telescoping member for engaging with or disengaging from the third telescoping member. The operating member is for driving the first engaging assembly and the second engaging assembly simultaneously to allow relative sliding movement of the first telescoping member and the second telescoping member and relative sliding movement of the second telescoping member and the third telescoping member at the same time, which provides a convenient way to extend the load leg between the child safety seat and a floor of a vehicle.

The invention discloses segment assembling equipment. The segment assembling equipment comprises a translation slide way, a translation slide block, a joist, translation driving mechanisms, a movable slewing mechanism and a piece taking mechanism, wherein the extending direction of the translation slide way is perpendicular to the axial direction of the movable slewing mechanism; the translation driving mechanisms are arranged on the translation sliding block, the translation sliding block is fixed to the joist, and the translation driving mechanisms can drive the translation sliding block and the joist to move along a path limited by the translation slide way; and the fixed end of the movable slewing mechanism is connected to the joist, the output end of the movable slewing mechanism is connected with the piece taking mechanism, and the movable slewing mechanism can drive the piece taking mechanism to slew and move. When the segment assembling equipment is applied to construction, after the piece taking mechanism grabs a segment, the translation sliding block drives the movable slewing mechanism and the piece taking mechanism to move on the translation slide way, and the movable slewing mechanism drives the piece taking mechanism to slew and move, so that the position of the segment can be greatly adjusted in a large range, and the splicing of the quasi-rectangular segments in a tunnel can be more conveniently and efficiently completed.

The invention belongs to the technical field of geological mineral products and particularly relates to a geological mineral product rock core drilling splitting sampler. The sampler comprises a fixing table and an air cylinder installed on the outer side wall of the fixing table, wherein a fixing plate is fixed to a telescopic end of the air cylinder, an electric push rod is installed on the bottom face of the fixing plate, and a first motor is fixed to a telescopic end of the electric push rod; a cutter head is installed on an output shaft of the first motor, and surrounding plates are symmetrically and rotationally connected to an upper surface of the inner side wall of the fixing table; by arranging a position adjusting assembly, controlling a controller through a mobile phone end, starting or stopping a second motor and a third motor through the controller, and under the cooperation of a groove and a protruding plate, opening and closing and the opening and closing degree of two surrounding plates can be remotely adjusted conveniently, and the position of a push plate is adjusted through an expansion piece on a door plate to be tightly attached to an end face of a rock core; starting or stopping of an air cylinder, an electric push rod and a first motor can be conveniently controlled through a mobile phone end, remote intelligent opening and closing operation is achieved, and rock cores of different lengths are fixed in an auxiliary mode.

The invention discloses a new energy vehicle waterproof fog rearview mirror, the structure of which includes a housing, the housing is provided with an open inner chamber, and the inner chamber is provided with a mirror surface that can be adjusted in angle and is convenient for personnel to observe and use device, the right side of the housing is provided with a turning adjustment device for vehicle connection and enabling the mirror device to be folded. This equipment uses a mirror device and a turning adjustment device to achieve Efficient removal of water mist enables personnel to better observe the road conditions on the rear side of the vehicle, and can effectively adjust the angle position and folding state of the equipment, making the equipment more convenient for personnel to use and improving the practicability of the equipment.

The invention discloses a double-head online flying laser cutting device. The double-head online flying laser cutting device comprises a supporting frame, a displacement device, a laser cutting machine, a cutting table and a roller device, wherein the displacement device is arranged on a horizontal frame of the supporting frame; the displacement output end of the displacement device is fixedly connected with a machine body of the laser cutting machine, a cutting head of the laser cutting machine directly faces a cutting area on the cutting table, and therefore, the displacement device can drive the laser cutting machine to move above the cutting area; and the roller device is arranged on a front hanging beam of the supporting frame in a hung mode and right faces the cutting area of the cutting table, therefore the roller device can convey a sheet to the cutting area, and the laser cutting machine cuts the sheet in the cutting area. According to the double-head online flying laser cutting device, the sheet can be cut into a required shape, and the utilization rate of the whole sheet and the shredding rate of the sheet are greatly improved, so that waste products are not prone to generate; and noise and dust are avoided in the cutting process, so that the field production environment is effectively improved.