低压伺服控制器(SSTS1C500)

低压伺服控制器(SSTS1C100)

低压伺服控制器(SSTS1C200)

METHOD FOR PREPARING PERFLUOROALKYL SULFINATE ESTER

The present invention discloses a method for preparing a perfluoroalkyl sulfinate ester, comprising: subjecting an α-carbonyldiazo compound and sodium perfluoroalkyl sulfinate, which serve as reaction substrates, to a coupling reaction in an organic solvent in the presence of inexpensive anhydrous copper acetate as an optimal catalyst and tert-butyl hydroperoxide (TBHP) as a green oxidant, to obtain the perfluoroalkyl sulfinate ester. Compared to the prior art, the present method has the advantages of a wide range of reaction substrates, a short reaction time, a high reaction yield, and mild reaction conditions, among others. The reaction does not require pre-activation of sodium perfluoroalkyl sulfinate, which can participate in the reaction directly, making reaction operations simple. The present method uses TBHP as a green oxidant and produces tert-butanol and water after reaction. Moreover, the present method avoids using a bromide or a chloride as a reaction material, and thus avoids ...

1,2,4-TRIAZOLE AND PREPARATION METHOD THEREFOR

Disclosed in the present invention is a method for preparing 1,2,4-triazole, comprising using a fluoroborate aryl diazonium salt, a diazoester derivative and an organic nitrile as reaction substrates, using a transition metal as a catalyst, and using an inorganic base as an additive to prepare 1,2,4-triazole by means of cyclization. The method used in the present invention has the following characteristics: The reaction is more economical, the substrate is more universal, the post-functionalization is easier, the reaction conditions are mild, the reaction can be performed in air, the catalyst amount used is less, and the post-treatment is simple, being beneficial to the purification and industrial application of the product. Meanwhile, in the present invention, the raw materials such as the reactants and the catalyst used are inexpensive and easily available, the reaction composition is reasonable, no ligand is needed, there are less reaction steps, and only one step of reaction is required ...

Device for assisting in gluing cigarette tipping paper

The invention discloses a device for assisting cigarette tipping paper gluing, and aims to solve the problem that cigarette strips and filter tips are not firmly glued to tipping paper due to the fact that the two side ends of the tipping paper are uneven and curled, bent and deformed, so that the phenomena of cigarette head falling and air leakage caused by edge warping of tipping paper materials are reduced. The device comprises an installation base, a paper lifting arm support, a paper lifting arm control air cylinder, a shaft rod fixing support, a paper guide rod and a paper guide rod fixing nut, the installation base is fixedly connected to a rack, a cylindrical boss is arranged on the upper end face of the installation base, and one end of the paper lifting arm support is installed on the cylindrical boss through a locking bolt. According to the device, a limiting block fixing nut and an elastic piece are used for installing and fixing a sliding groove to adjust the gluing device, ...

Wheel rim temperature detection method and device for simulating road working condition

The invention relates to a wheel rim temperature detection method and device under simulated road working conditions, and the method comprises the following steps: obtaining braking data under various working conditions, and converting the braking data into rack simulation parameters; a brake assembly, a brake drum, a rim and a tire are assembled on a brake inertia test bench, and a temperature sensor is installed; and performing a simulation test on the brake inertia test bench based on the bench simulation parameters, and detecting a temperature value of a contact position of a rim and a tire crown by using a temperature sensor. As the actual braking condition is simulated by using the brake inertia test bench according to the bench simulation parameters, the consistency of the bench simulation test and the road working condition is ensured, the bench test replaces the whole vehicle test, the test cost is reduced, the accuracy of the test data is improved, the optimal matching of different ...

METHOD FOR USE IN PREPARING ISOXAZOLINE DERIVATIVE

Disclosed in the present invention is a method for use in preparing an isoxazoline derivative: an olefin derivative, a diazo derivative and tert-Butyl nitrite are used as a reaction substrate, while a copper compound is used as a catalyst; under alkaline conditions, a tandem cyclization reaction is further carried out by means of the coupling of metal carbene and free radicals so as to obtain an isoxazoline derivative. The present invention designs mild reaction conditions, and the raw materials selected are low-cost and easy to obtain, an inexpensive metal copper compound being selected as a catalyst, while the isoxazoline derivative may be conveniently synthesized directly in a sealed tubular system. The present invention avoids the use of a large amount of an oxidant, the use of a noble metal as a catalyst and the harsh water-free and oxygen-free experimental conditions of a traditional method for synthesis such that the reaction is simple and easy, while post-processing is simple, thereby ...

Preparation method of green N-methyl amide compound

The invention discloses a preparation method of a green N-methyl amide compound. An LED lamp is used as a light source to provide energy, economical and easily available tertiary amide is used as a reaction substrate, copper chloride is used as a catalyst, hydrochloric acid which can be purchased in the market is used as an additive, and acetone is used as a solvent. Compared with the prior art, the method disclosed by the invention has the following advantages: a green, mild and environment-friendly visible light catalysis reaction mode is adopted; the reaction system is simple, the substrate range is wide, and aromatic and aliphatic amides are suitable for the method; the reaction yield is high; operation is simple, and raw materials are cheap and easy to obtain.

Surface treatment equipment for automobile engine protection plate production

The invention relates to the technical field of engine protection plates, in particular to surface treatment equipment for automobile engine protection plate production, which is characterized in that thread transmission and a limiting device are used for being linked with a driven gear mechanism, so that an automobile engine protection plate rotates when entering and exiting a reaction tank, bubbles are reduced, meanwhile, the range of a protection layer is more comprehensive, and the service life of the protection layer is prolonged. In the process that a gear cylinder is driven by a U-shaped sliding plate in the equipment to move left and right along the interior of an annular plate, the gear cylinder rotates relative to a straight toothed plate, so that a driven rotating plate turns over a clamping module by a certain degree, the clamped automobile engine protection plate is soaked in a solution of a reaction tank for chemical reaction, a protection layer is formed, and the service ...

Air source device for simulating real vehicle working condition of commercial vehicle and control method of air source device

The invention relates to an air source device for simulating the real vehicle working condition of a commercial vehicle and a control method thereof.A vehicle compressor is placed in an environment bin and connected with a driving assembly, a cooling assembly, a lubricating assembly and a control device, the environment bin can simulate the temperature and humidity of air in the environment where the vehicle is located, and the temperature and humidity of the air in the environment can be controlled. The driving assembly can adjust the rotating speed of the compressor for the vehicle, the cooling assembly can simulate the temperature generated by a water loop of the vehicle, and the lubricating assembly can simulate the temperature generated by an oil loop of the vehicle, so that the temperature and humidity of air before entering an air inlet of the compressor for the vehicle can be controlled through the control device; and the influence of the temperatures of an oil loop and a water ...

Control method of YB518 type double-channel cigarette packet cellophane paper width quantification control system

The invention discloses a control method of a YB518 type double-channel cigarette packet cellophane paper width quantification control system. The control system comprises an adjusting roller set (2), a cutter (3), an industrial camera (5), a guide roller set (6), a main transmission disc, a photoelectric switch, an industrial computer, a PLC, an original machine controller A12 and a motor M12. When the measured width is not equal to the standard width, the whole transparent paper is moved by controlling forward/reverse rotation of the motor and controlling the adjusting roller set to move in the axial direction of the roller and/or move in the axial direction inclined to the roller; the width of the transparent paper on the first track and the second track of the transparent paper one-to-two roller set is quantitatively controlled and adjusted, so that the width of the transparent paper on the two tracks is balanced and consistent with the standard width. The phenomenon that cigarette ...

Low-cost servo driver large-current PCB wiring structure

The invention provides a high-current PCB wiring structure of a low-cost servo driver. The high-current PCB wiring structure comprises a power board and cooling fins, the power board comprises a first lamination layer, a second lamination layer, a third lamination layer and a fourth lamination layer which are sequentially laminated; the first lamination layer, the second lamination layer, the third lamination layer and the fourth lamination layer are respectively provided with a three-phase power supply via hole, a positive power supply via hole and a negative current via hole. The driving circuit, the sampling circuit and a first forward power interface copper laying area are arranged on the first lamination layer; a first negative power interface copper laying area and a connecting line of an electronic device are arranged on the second lamination layer; a second positive power interface copper laying area and a power interface connecting line are arranged on the third lamination layer ...

Edge covering device for automobile roof

The invention relates to the technical field of car roof edge covering, in particular to an edge covering device for a car roof, which comprises a bottom plate, a sliding plate is slidably connected to the bottom plate, a lifting motor is fixedly arranged on the bottom plate, a lifting screw is in power connection with the upper end of the lifting motor, a lifting plate is in threaded connection with the lifting screw, and the ceiling is arranged on the sliding plate. A power motor is fixedly arranged on the lifting plate, a driving screw is in power connection with the power motor, a driven screw plate is in threaded connection with the periphery of the driving screw, a torsion rod is rotationally connected with the driven screw plate, a guide sliding box is fixedly arranged on the torsion rod, a torsion spring is connected between the guide sliding box and the torsion rod, and a sliding groove is formed in each guide sliding box; and a coating box is arranged on each sliding groove, the ...