32results about How to "Easy size control" patented technology

The invention relates to a hydraulic unit for slip-controlled braking systems having a plurality of receiving holes (23-28) for transport devices (15a, 15b, 15c; 16a, 16b, 16c) associated with a plurality of hydraulic circuits bundled into groups, wherein the receiving holes (23-28) are disposed at a distance from each in parallel with the upper side (22), and a drive shaft having eccentrics located at the plane spacing for driving the transport devices (15a, 15b, 15c; 16a, 16b, 16c). In order to provide a compromise optimized for manufacturing a small, convenient hydraulic unit, it is proposed according to the invention that three theoretical planes (E1, E2, E3) are arranged in parallel to the upper side (22), each receiving two V-shaped receiving holes for transport devices (23-28) disposed at an angle to each other, and that the drive shaft comprises three separate eccentrics for driving said transport devices (15a, 15b, 15c; 16a, 16b, 16c).

A light-emitting diode array comprising a conductive layer formed on a substrate, separate light-emitting portions formed on the conductive layer, a first electrode formed on at least part of an upper surface of each light-emitting portion, and a second electrode formed on the conductive layer adjacent to the light-emitting portions; the first electrode comprising a common switching electrode matrix; the second electrode comprising a common electrode divided such that one second electrode exists in every block; and at least one of bonding pads extending to the first common electrode and the second common electrode being formed on a bonding portion formed on the conductive layer like an island, whereby the bonding pads are separate from each other.

The invention discloses a low-temperature resistant hot rolling H section bar with low compression ratio and super-thick specification and a production method thereof and belongs to the field of hot rolling H section bars. The H section bar is prepared from the following chemical components in percentage by weight: 0.11-0.19% of C, 0.15-0.30% of Si, 1.30-1.55% of Mn, less than or equal to 0.02% of P, less than or equal to 0.008% of S, 0.008-0.020% of Ti, 0.015-0.055% of V and the balance of Fe and inevitable impurities. The production method of the H section bar sequentially comprises the following steps: smelting in a converter or electric furnace; LF (ladle furnace) refining; full protection continuous casting of a beam blank; heating; rolling; and cooling to finally obtain the low-temperature hot rolling H section bar, wherein the flange is over 30mm thick, the compression ratio is less than 3, and the surface is good in quality. The vertical average ballistic work at -20 DEG C is over 150J, so that the H section bar has a wide market application prospect.

The invention discloses a photoelectric conversion module which comprises a main circuit board and an optocoupler. The main circuit board comprises a bearing surface. The photoelectric conversion module further comprises a sub-circuit board. The sub-circuit board is vertically fixed on the bearing surface and is electrically connected with the main circuit board. The sub-circuit board comprises afirst surface perpendicular to the bearing surface. A number of photovoltaic elements are arranged on the first surface. The optocoupler is provided with a number of first coupling lenses and is fixedon the first surface of the sub-circuit board. Each first coupling lens is aligned by corresponding to a photoelectric element. The photoelectric conversion module provided by the invention has the advantage of easily light path alignment.

Embodiments of the present invention provide a secondary battery, a top cover assembly and an assembly method thereof, relating to the field. The top cover assembly includes a pole, an upper plastic, a sealing ring, a top cover sheet, an insulating gasket, a fixing ring and a lower plastic. The sealing ring is sleeved on the circumference of the pole, the insulating gasket is connected with the fixed ring, and the upper plastic is connected with the top cover. The top cover sheet is provided with a pole hole, and the pole, sealing ring, insulating gasket and fixing ring are all assembled in the pole hole, and the sealing ring abuts between the pole and the hole wall of the pole hole. The fixing ring is fixedly connected with the top cover sheet, the insulating gasket is located between the pole and the fixing ring, and the two ends of the sealing ring are respectively connected with the upper plastic and the insulating gasket. The lower plastic is connected with the insulating gasket, and the pole is used for connecting with the cell of the secondary battery. The parts of the top cover assembly provided by the embodiments of the present invention have good versatility, are easy to manufacture, and are beneficial to improving production efficiency.

The invention relates to a device for sintering a high-temperature-resistant material and application of the device. The device comprises side panels, a top panel and a bottom panel, wherein the side panels are made of silicon carbide; at least four top grooves are formed in the top panel; the left top groove and the right top groove are through grooves; a front bottom groove and a rear bottom groove are formed in the bottom panel; the front panel and the rear panel are respectively inserted in the front bottom groove and the rear bottom groove; positions, which are close to the left side and the right side of the bottom panel, of the left side panel and the right side panel are connected with the bottom panel; a plurality of through holes are formed in each side panel; a gap is formed between each two optional adjacent side panels; and anti-sticking parts which are formed by quartz fabrics are respectively paved on the inner wall of the top panel and the inner wall of the bottom panel. The invention further provides application of the device in sintering of the high-temperature-resistant material. The device has the advantages of simple structure, convenience in use, high temperature resistance, good thermal conductivity and anti-sticking property, even temperature, controllable material shape, size, appearance and microstructure and the like.

The invention discloses a method for preparing monodisperse FePt / Fe3O4 mixed nano particles, which belongs to the field of nanotechnology. The preparation method includes: (1) in an inert gas atmosphere, sequentially add oleic acid, oleylamine, reducing agent, and Pt(acac)2 into the solvent, stir evenly, preheat at 100-120° C. for 5-30 minutes, and add Fe (CO)5, heat up to 150-280°C and keep it warm for 1-2h to prepare FePt nanoparticles; (2) add FePt nanoparticles dispersed in alkane solvent to the reaction solvent, and heat the system to 50°C in a certain atmosphere. ~250°C, heat preservation for 0.5~4h, to prepare monodisperse FePt / Fe3O4 mixed nanoparticles. The method uses an in-situ method to prepare FePt / Fe3O4 mixed nanoparticles, which has the advantages of low cost, simple operation, high product quality, and good stability. This method is used to prepare monodisperse FePt / Fe3O4 mixed nanoparticles, which are multifunctional The application and development of composite nanoparticles provide convenient conditions.

Provided is a rolling machining method of a sealing tooth section of an exhaust connecting pipe. The method comprises the steps that a sheet tooth section is machined; an installation groove for the tooth section is machined in the end face of the connecting pipe; the tooth section is machined to be of a circular arc shape with the radian approximate to that of an integrally-formed circular hole of the sealing tooth section; the tooth section is placed into the installation groove, and three points are uniformly and fixedly riveted on the rolling side to prevent the tooth section from moving; a rolling tool is installed on a vertical lathe, and the rolling machining portion of the connecting pipe is continuously rolled through the rolling tool to deform to extrude the tooth section; a correcting tool is installed on the vertical lathe, and correction is carried out on the inner side or the outer side of the tooth section through the correcting tool; finish turning is carried out on the tooth section. Through the steps, machining of the sealing tooth section of the exhaust connecting pipe is achieved, implementation is convenient, the operation process is simplified, and especially, the requirement for the machining precision of equipment is lowered.

A pipe cutting device comprises a cutter assembly, an installation plate of the cutter assembly, a working platform, an air cylinder, an air cylinder frame, a foot switch, a fixed pressing block, an enhanced safety component and a size control device; the cutter assembly comprises a fixed bottom plate, a cutting knife fixing plate and a cutting knife fixing plate return spring; a hose supporting base group and a cutting knife fixing plate connecting base are fixedly arranged at front and back ends of the fixed bottom plate respectively, and the hose supporting base group comprises a main supporting base and a protective supporting base; the rear end of the cutting knife fixing plate is hinged to the cutting knife fixing plate connecting base; a piston head of the air cylinder abuts against the cutting knife fixing plate; the size control device comprises a size control stopping block; the fixed bottom plate is placed inside a positioning hole formed in the installation plate of the cutter assembly and is pressed against and fixed on the working platform through the fixed pressing block; the enhanced safety component is fixedly arranged on the right side of the hose supporting base group and comprises front and back enhanced safety blocks, highest points of the front and back enhanced safety blocks are higher than the highest position of a tip of a cutting knife, and the distance between the front and back enhanced safety blocks is 10-20mm larger than the diameter of a hose.

An optical path conversion module, which is used in an optical fiber coupling connector, the optical fiber coupling connector includes a photoelectric module and an optical fiber, the optical path conversion module realizes the optical path conversion between the photoelectric module and the optical fiber, and the optical path conversion The module includes a light pipe with a 90 degree bend angle. The invention also provides an optical fiber coupling connector with the optical path conversion module.

A method for preparing an organic / inorganic hybrid double-layer nano-membrane self-rolling tube, the steps mainly include: A, grinding and polishing the magnesium sheet, cleaning, and vacuum drying; B, placing the magnesium sheet in the step A in 2.5-3.5mol In the NaOH solution of / L, under 50-70 ℃, react 3-4h, obtain Mg(OH) on the magnesium sheet surface Thin film; Acid solution; D, the magnesium sheet of step B is placed in the phytic acid solution, let stand for 1-30min, promptly forms double-layer nano film on the magnesium sheet; E, after cleaning the magnesium sheet of D step, in 40-60 ℃ , and vacuum-dried for 6-24 hours, the organic / inorganic hybrid double-layer nano-film on the magnesium sheet is separated from the magnesium sheet and curled to obtain a self-rolling tube. The micro-nano self-rolling tubes prepared by this method are degradable and non-toxic to the human body, and are especially suitable for use in the biomedical field as implant materials or drug carrier materials; And the size is easy to adjust.

The invention discloses a hanging mercury electrode device used for measuring electrochemical heavy metals, which comprises a cavity, a mercury storing cup, a capillary tube, a sealing needle, a lifting rod and a lifting drive component, wherein the sealing needle and the liquid inlet end of the capillary tube are arranged in the cavity; the output end of the lifting drive component is connected with the upper end of the sealing needle by the lifting rod and drives the sealing needle to make the up and down movement; the lower end of the sealing needle is matched with the liquid inlet of the capillary tube to control the make and break of feed liquid; the liquid inlet of the capillary tube is communicated with the mercury storing cup. The invention is the hanging mercury electrode device used for measuring the electrochemical heavy metals, which has simple and compact structure, convenient operation, high degree of automation, extremely good uniformity of hanging mercury sizes and convenient control of mercury drop sizes.