32results about How to "Simplified installation requirements" patented technology

The invention discloses a flexible solar wing with a shear fork type unfolding mechanism. The flexible solar wing comprises the shear fork type unfolding mechanism and a flexible solar wing body; and the shear fork type unfolding mechanism is connected with the flexible solar wing body. The flexible solar wing has the advantages of simplicity, light weight and large unfolding and folding ratio.

The invention discloses a power joint device adapting to different power tools. The power joint device comprises a device body which comprises a clamping part and a supporting platform, wherein the clamping part is used for clamping screws, the supporting platform is used for fixing the clamping part, the clamping part comprises joints for clamping different specifications of screws, the joints include a joint I, a joint II and a joint III, and the joint I is welded with the supporting platform. The device can form linkage structures with multiple power tools through different power joints, the clamping part can be used for clamping different specifications of the screws, and the supporting platform can be used for supporting the clamping part, so that the power joints can be advantageously connected with the power tools; and the joint I, the joint II and the joint III can be connected with different specifications of the power tools, so that the applicability and durability of a product can be improved, the use efficiency is improved, and the damaging risk is reduced.

The invention discloses the preparation of a solid fluorescent carbon quantum dot material. First, take an appropriate amount of citric acid, urea and sodium carbonate and put them into a heat-resistant glass container. The mass ratio of the citric acid, urea and sodium carbonate is 1:1:0.5~1; then, add distilled water to the container to form a transparent solution, the mass volume ratio of the total amount of citric acid, urea and sodium carbonate to distilled water is 80~85g / 100mL; ~100°C, after heating for 4-6 minutes, take out the target product, place it in a dark box UV analyzer, and irradiate it with an excitation wavelength of 365nm, which emits yellow-green fluorescence. The obtained target product is subjected to a steady-state spectrum test, and the test results It is: the emission wavelength under the excitation wavelength of 280nm-480nm is 510nm-530nm. The solid fluorescent carbon quantum dots prepared by the invention can be applied to the preparation of white light-emitting diodes, solar cells, lasers and the like.

The invention discloses a stirring head power supply-assisted composite double-shaft friction stir welding method. The method comprises the steps that stirring friction heads are adopted as electrodes of a resistor heat source, high-density currents are provided for the interior of a to-be-welded workpiece through a direct-current switch power supply, and the resistor-assisted heat source is provided for the stirring heads rotating at a high speed in the friction stir welding process; the stirring heads rotating at the high speed are inserted into the two sides of a joint, and upsetting pressure is exerted to metal at the joint through a shaft shoulder, so that the metal material at the joint is softened; the metal structure at the joint achieves a plasticizing state under the stirring effect through the stirring heads, and meanwhile micro-forging treatment is conducted on the plasticized metal by adopting an ultrasonic vibration exciter, so that metal structure crystalline grains at the joint are refined; the stirring heads do forward feeding motion in the direction of the joint, a cavity formed after a stirring needle moves is continuously filled with the plasticized metal under the stirring and extruding effect of the stirring heads, and the plasticized metal is gradually cooled and solidified to form a welding joint. According to the method, wear of the stirring heads is reduced, the welding thickness is increased, the welding speed is increased, and welding defects are reduced.

An automatic camshaft aligning, deviation-rectifying and positioning device comprises a coarse angle positioning device and a fine angle positioning device, wherein the coarse angle positioning device and the fine angle positioning device are mounted on an angle positioner mounting seat through a connecting plate, and the angle positioner mounting seat is mounted between a headstock and a tailstock of a machine tool. An automatic camshaft aligning, deviation-rectifying and positioning method for the automatic camshaft aligning, deviation-rectifying and positioning device includes mounting a float hydraulic chuck (1) on the headstock of the machine tool of a cam grinder, mounting the angle positioner mounting seat provided with the automatic camshaft aligning, deviation-rectifying and positioning device (2) between the headstock and the tailstock (3) of the machine tool, driving the coarse angle positioning device and the fine angle positioning device of the automatic camshaft aligning, deviation-rectifying and positioning device by two hydraulic cylinders respectively, providing position signals by a coarse positioning non-contact position sensor of the coarse angle positioning device and a precision positioning sensor of the fine angle positioning device, and combining the float hydraulic chuck on the headstock of the machine tool and a machine tool electric system to achieve automatic camshaft aligning, deviation-rectifying and positioning.

The invention discloses a method for automatically matching the compressors of an indoor unit and an outdoor unit. The control board of the outdoor unit controls multiple indoor units to operate in the refrigeration mode and at the same time turns on one compressor. When the temperature drop range of one of the indoor units is greater than the preset temperature, it is considered that the compressor and the indoor unit may match; then control multiple indoor units to run in heating mode through the outdoor unit control board, if the temperature rise range of the indoor unit is greater than the preset temperature, it is considered that the compressor and the indoor unit If the matching is successful, turn off the compressor and indoor unit, and repeat the above steps until all compressors and indoor units are successfully matched. The invention can effectively reduce the installation difficulty and installation time of the air-conditioning system, simplify the installation process, reduce the error rate of the air-conditioning installation, and improve the automation degree of the air-conditioning system because no manual configuration of software is required.

The invention discloses a locating and falling preventing device for a moving smoke cover of a rotary furnace. The locating and falling preventing device is composed of multiple connecting units for connecting the moving smoke cover of the rotary furnace with a smoke cover fixing beam. Each connecting unit comprises a fixed part and a moving part. The tops of the fixed parts are installed on the smoke cover fixing beam through a girder fixing base. The bottoms of the moving parts are installed around the moving smoke cover through a smoke cover fixing base. The fixed parts and the moving partsare installed in a guiding manner through sliding pairs. The smoke cover fixing base is provided with chains for hoisting. The chains for hoisting are connected with a hoisting device arranged on thesmoke cover fixing beam. The device further has double falling preventing functions on the basis of guiding, the function of a set square and a guide groove is utilized, guiding is more stable, the falling preventing function can also be achieved, and the chains in a moving casing pipe and a fixed casing pipe can have a secondary falling preventing function. After the device is installed on the moving smoke cover, the fault rate is reduced obviously, and meanwhile the service life of the moving smoke cover is prolonged.

The invention discloses a resistor heat source-assisted composite double-shaft needle-free friction stir welding method. The method comprises the steps that stirring friction heads are adopted as electrodes of a resistor heat source, high-density currents are provided for the interior of a to-be-welded workpiece through a direct-current switch power supply, and the resistor-assisted heat source is provided for the stirring heads in the friction stir welding process; the stirring heads rotating at a high speed are inserted into the two sides of a joint, and upsetting pressure is exerted to metal at the joint through a shaft shoulder, so that the metal material at the joint is softened; the metal structure at the joint achieves a plasticizing state under the stirring effect through the stirring heads rotating at the high speed, and meanwhile micro-forging treatment is conducted on the plasticized metal by adopting an ultrasonic vibration exciter, so that metal structure crystalline grains at the joint are refined; the stirring heads do feeding motion in the direction of the joint, a cavity formed after a stirring needle moves is continuously filled with the plasticized metal under the stirring and extruding effect of the stirring heads, and the plasticized metal is gradually cooled and solidified to form a final welding joint. According to the method, the life of the stirring heads is prolonged, the welding thickness is increased, the welding speed is increased, and welding defects are reduced.

The invention relates to a guide device of a machine tool spindle box balance weight heavy punch, in particular to the technical field of heavy numerical control foundation tools for metal cutting. The guide device comprises a stand column, and the balance weight heavy punch is arranged in the stand column; a guide rail is arranged between the balance weight heavy punch and the stand column, and a guide assembly is arranged between the balance weight heavy punch and the guide rail; the guide assembly comprises guide sleeves, and guide shafts are arranged at one ends inside the guide sleeves; the guide shafts are sleeved with elastic elements, and bosses are arranged at the outer ends of the guide shafts; transverse shafts are arranged at the other ends of the guide sleeves, and transverse bearings matched with the guide rail are arranged on the transverse shafts; and on the two sides of the guide rail, the guide sleeves are connected with side shafts located on the two sides of the guide rail respectively through supports, side bearings are arranged on the side shafts, and the side bearings are matched with the side faces of the guide rail. The guide device is stable in running, and the precision requirement for the guide rail is reduced.

The invention discloses a chuck power supply auxiliary compound double-axis dynamic friction stir welding method. Positive and negative electrode dynamic clamping heads and a guide pretightening wheel are adopted to finish clamping of workpieces to be welded; a direct-current switch power supply is used for providing high-density current into the workpieces to be welded; metals in joints of the workpieces to be welded are preheated; stirring heads rotating at high speed are inserted in two sides of the joints; positive pressure is applied to the metals in the joints through shaft shoulders, so that the metal materials in the joints are softened; the stirring heads enable the metal structures in the joints to achieve a plastified state under the stirring effect; meanwhile, a ultrasonic exciter is adopted to finely forge the plastified metals, so that grains of the metal structures in the joints are refined; the workpieces to be welded are fed along with a welding worktable in the directions of the joints; and the plastified metals are continuously filled in a cavity formed after movement of stirring needles under the stirring and extruding effects of the stirring heads, and are gradually cooled to condense as welding lines. The method relieves the wear of the stirring heads, increases the welding thickness, accelerates the welding speed, and reduces the welding defects.