35results about How to "Meet the actual working conditions" patented technology

A pressure stabilization control system of pitching oil cylinders of an active carry-scraper comprises the first pitching oil cylinder (2), the second pitching oil cylinder (3), a main reversing valve (1), a first one-way sequence valve (7), a second one-way sequence valve (6), a reversing valve (8), a first energy accumulator (9), a second energy accumulator (10), a pressure control valve (12) and a pressure stabilization valve (13). A pressure buffer loop is connected among the first pitching oil cylinder (2), the second pitching oil cylinder (3) and the main reversing valve (1) in parallel to absorb impacts generated in the work process of the first pitching oil cylinder (2) and the second pitching oil cylinder (3). After the pressure of rod cavities or rodless cavities of the pitching oil cylinders is suddenly increased, hydraulic oil of the high-pressure cavities can be automatically conveyed to the first energy accumulator through the pressure buffer loop, and oil supplementation can be fast carried out on the low-pressure cavities from the second energy accumulator; and the heating amount of the system is small, the impact force on a pitching mechanism is effectively buffered, and the service life of the pitching mechanism of the carry-scraper is prolonged.

The invention discloses a method and a device for recording suspension arm belt loading extension and a crane. The method can comprise the following steps: if the rated lifting capacity is greater than a first weight threshold, the ratio of the suspension loading weight to the rated lifting capacity is greater than a preset coefficient, and the suspension arm extension length is greater than a length threshold, the suspension arm extension length is recorded as belt loading extension; and if the rated lifting capacity is smaller than the first weight threshold, the suspension loading weight is greater than a second weight threshold, and the suspension arm extension length is greater than the length threshold, the suspension arm extension length is recorded as the belt loading extension. The method can effectively prevent the wrong record of the suspension arm belt loading extension, and can be suitable for cranes with various model numbers.

The invention relates to the field of error measurement of large gears, in particular to an on-machine measuring instrument for pitch deviation of large gears. Including: tooth pitch deviation measurement mechanism, reciprocating motion mechanism of measurement mechanism, machine tool connection and adjustment mechanism, motion control and measurement signal processing software. The device of the invention can quickly measure the tooth pitch deviation of large gears on the machine. During the measurement process, the rotary table of the machine tool itself is used without loading and unloading the gears. The deviation measuring instrument is fixed on the column of the gear processing machine tool, and the electric module of the tooth pitch deviation measuring instrument is reciprocated to measure the tooth pitch deviation of the gear tooth by tooth; finally, the measurement results are integrated and calculated by software, and the Pitch deviation of large gears to be measured.

The invention provides a vibration damping device of a weapon station vibration damping alloy. It includes: a damper, which includes a base, a sleeve, a guide rod and a disc spring structure; a cradle and a gun body; the cradle and the sleeve are respectively fixed to the base, and the guide rod is One end is fixedly connected with the gun body, and the firing direction of the gun body is consistent with the extending direction of the guide rod; the other end of the disc spring structure and the guide rod are arranged in the sleeve, One end of the sleeve away from the guide rod has a limit end. When the gun body fires shells, the guide rod drives the disc spring structure to move toward the limit end, and the limit end is used for pressing Tighten the disc spring structure. The vibration damping device of the weapon station damping alloy improves the problems of excessive recoil displacement, secondary impact and low energy absorption rate of the rectangular coil spring of the damper in the prior art.

A self-adaptive irrigation system pipeline water hammer impact reducing device, comprising a valve inlet pipeline (1), a reducer (4), and a water hammer response channel. The reducer (4) and the outer wall of the valve inlet pipeline (1) form a closed annular cavity; the edges of an isolating reinforcement plate (21) are respectively connected to the inner wall of the reducer (4) and the outer wall of the valve inlet pipeline (1); a pressure relief action block (8) is attached to the inner wall of the reducer (4) and the outer wall of the pipeline, the isolating reinforcement plate (21) and a first end surface of the pressure relief action block (8) form a pressure relief cavity, a water discharging port is formed in the pressure relief cavity, the isolating reinforcement plate (21) and a second end surface of the pressure relief action block (8) form an action cavity, and the water hammer response channel is in communication with the action cavity and an inner cavity of the valve inlet pipeline (1); a pressure relief hole (11) and a pipeline hole (18) are completely staggered under a normal water conveying state, and the pressure relief hole (11) is in communication with the pipeline hole (18) under a pressure relief state. The water hammer impact reducing device can actively respond the water hammer impact of a valve in an irrigation water distribution pipe network, effectively reduce the water hammer impact, guarantee the safety of key components of the irrigation water distribution pipe network, and improve the stability of an irrigation water distribution system, and is applicable to a multi-user random irrigation water distribution pipe network working condition.

The invention provides an electric coupler pulling-out force testing device and a method thereof. The electric coupler pulling-out force testing device is composed of a hydraulic system, a water pressure control system and a measurement and control system. The hydraulic system is composed of a gear pump, solenoid directional valves, a pilot overflow valve, an energy accumulator, a proportional throttle valve, an oil cylinder, an air cooler, filters and a pressure gage. The water pressure control system is composed of a pressure testing pump, a variable frequency motor, stop valves, energy accumulators, pressure gages, pressure sensors, a pressure barrel, a motor frequency converter, a PLC and a touch screen. The measurement and control system is composed of pressure sensors, a displacement sensor, an industrial personal computer, a data acquisition card, a relay module and an isolation module. According to the testing device, a water pressure environment with the pressure ranging from 0 MPa to 6 MPa is built for electric coupler pulling-out, it is guaranteed that the pressure fluctuation range is within 5% in the electric coupler pulling-out process, the pulling-out speed within the range from 0 m / s to 1 m / s and the maximum pulling-out force not smaller than 5,000 N are provided, and the pulling-out force at the moment of electric coupler disengagement is calculated out.

The invention relates to a high-transmission soft contact two-section type copper alloy crystallizer as well as preparation and application thereof, and belongs to the field of electromagnetic metallurgy equipment manufacturing. The crystallizer uses copper alloy ingredients in percentage by mass: less than 0.5 percent of Al, 31 to 33 percent of Mn, less than 0.5 percent of Ti, less than 0.5 percent of Si and the balance of Cu. The crystallizer comprises a crystallizer upper half section prepared by the copper ally, and a crystallizer lower half section prepared from pure copper, wherein the connecting position of the crystallizer upper half section and the crystallizer lower half section is welded by pure copper TIG; the welding mode is a V-shaped big slope opening forming mode; the thorough welding is ensured; in addition, the welding seam welding position is enabled to have the sufficient intensity; the soft contact electromagnetic power is provided by an electromagnetic induction coil surrounded on the outer side of the upper half section of the obtained high-transmission magnetic soft contact two-section type copper alloy crystallizer; the best power supply work parameter is given; the guidance is provided for the optimization production. The cooling effect of the crystallizer is identical to the cooling effect of a conventional pure copper crystallizer; the inherent attribute of the steel liquid initial stage solidification can be enhanced by the crystallizer.

The invention discloses a testing device and method for measuring the relationship between nozzle inside flow and cavitation erosion under multiple working conditions. The testing device comprises a pressure control system, a signal testing system, an injection system and a fuel supply system; the pressure control system comprises a first electromagnetic oil pressure control valve, a second electromagnetic oil pressure control valve, a pressure regulating valve, a pressure limiting valve and a back pressure cavity; the signal testing system comprises pressure sensors, flow sensors, a signal control terminal, a CCD high-speed digital camera and a computer; the injection system comprises oil atomizers and nozzle head caps; the fuel supply system comprises an oil tank, a heating tile, a fuel oil filter, an electric fuel pump, a high-pressure oil pump, a turbulator and a common-rail oil pipe. By means of the testing device, test research on influences on nozzle inside cavitation caused by nozzle inside cavitation flow generated by different injection pressures, back pressure, the fuel spray nozzle structure, the fuel temperature and the pipe inside flow state can be carried out, and measurement of influence factors of nozzle inside cavitation caused by nozzle inside cavitation flow of a diesel engine under multiple working conditions is achieved.

The invention discloses a manufacture method of a static pressure supporting system model on the basis of a cloud platform, and belongs to the technical field of support and lubrication design. A static pressure supporting system is a product with a high customization degree, and participators of all production links from users to manufactures need deep communication to manufacture the static pressure system which conforms to user demands. A tiny error of the supporting surface of an oil seal edge affects the bearing performance of the static pressure supporting system. Since the static pressure supporting system has a wide application range, users can apply the static pressure supporting system into various supporting structures, and therefore, customization demands are high. But the tiny error can not be usually completely avoided. The tiny errors of the type can be truly measured after part production. Therefore, a new design and production mode needs to be established, a designer in a laboratory and a manufacturer in a factory are connected by virtue of the cloud platform technology, and real-time data communication is carried out to obtain a true and accurate analysis result so as to improve the design reliability of the static pressure supporting system.

An aluminum alloy sacrificial anode material for improving the water / air interface protection effect of a sewage storage tank and a preparation method thereof according to the present invention comprise the following components in terms of mass percentage: Zn 3.0-4.0%, In 0.01-0.1%, Mg 0.4-0.5% %, Sn 0.01-0.1%, and the rest is Al. Melt aluminum ingots to obtain molten aluminum, and continuously pass inert gas for protection during the smelting process; after the molten aluminum is kept warm for 30 to 35 minutes, add Zn to the molten aluminum, melt and stir evenly, then add In, Mg and Sn, until completely melted, stirred evenly, removed slag, and kept warm to obtain a mixed solution; the mixed solution was poured into a mold and cooled to room temperature to prepare the aluminum alloy sacrificial anode material. The invention prepares the aluminum alloy material capable of effectively protecting the position of the water / air interface of the sewage storage tank by adding suitable alloy element types and proportions, and dissolves evenly in the sewage storage tank.

The invention provides a high-reflectance optical fiber F-P chamber transient speed variation phase high-speed linear demodulation method which comprises the following steps: measuring a relationship curve between high-reflectance multi-light optical fiber F-P chamber reversed detection interference output and scanning wavelength by using a wavelength scanning method; acquiring the primary physical chamber length of the F-P chamber; selecting central wavelength of three laser light sources according to the relationship curve between the F-P chamber reversed detection interference output and the scanning wavelength; exciting the F-P chamber through the three laser light sources; adjusting the output power of each laser light source; designing and manufacturing a static pressure experimental clamp with a laser wave pressure senor of the F-P chamber, making a static pressure loading experiment, and drawing corresponding relationship curves between the interference output and external static pressure under the excitation of the laser light sources; making a static characteristic calibration experiment by using a demodulator so as to obtain interference output variation phase of the F-P chamber and a linear relationship curve between the external static pressure and the interference output, and furthermore achieve linear calibration on the interference output variation phase of the F-P chamber.

The invention provides a blowing-suction electromagnetic vibration precision seeding device and its control method. The suction plate is composed of multiple small air chambers, the suction hole of the bottom suction cup is equipped with a tapered suction nozzle part, the multi-air chamber partial pressure suction plate is connected with the two-degree-of-freedom manipulator; the blowing vibration seed plate device includes a top-to-bottom The vibrating seed plate, the hollow tray and the open three-layer blowing chamber are fixed in sequence, and the tray is fixed with the electromagnetic vibrator; the electromagnetic vibrator includes an adjustment shaft, a coil and an armature, and the armature and the adjustment shaft are coaxially arranged on the coil Inside, the coil is placed inside the coil fixing seat, the adjustment shaft is located above the armature, and there is a gap between the two. The invention can improve the segregation phenomenon of the populations in the seed tray, better increase the dispersion among the populations, and at the same time uniform and stabilize the seed suction airflow and improve the seed suction rate.