107results about How to "Embody versatility" patented technology

The invention discloses a VSVPWM (Virtual Space Vector Pulse Width Modulation)-based three-level inverter neutral point potential compensation balance control strategy. A virtual median vector is introduced on the basis of the conventional SVPWM, the current which flows by a neutral point in each sampling period can be zero through recombination of a small vector and the median vector. The invention provides the VSVPWM-based neutral point potential accurate compensation control strategy. According to the method, a voltage adjustment coefficient is introduced according to detected neutral point potential deviation, three-phase output current and direct current side neutral point current direction to set different adjustment coefficients for different small vectors so as to increase the control capacity of corresponding positive or negative small vector to the neutral point current and reduce the fluctuation of the neutral point potential.

The invention discloses a testbed of mixed loading servo drive system reliability. The testbed solves the problems that a loading mode in the prior art is simple and cannot reflect the actual working conditions of a servo drive system. The testbed comprises a servo motor supporting part, an inertia loading part, a torque loading part, a vibration temperature-humidity loading part and an automatic control part. The servo motor supporting part is arranged on the left side of a horizontal iron (1), the inertia loading part is arranged on the position, on the right side of the servo motor supporting part, of the horizontal iron (1), and the torque loading part is arranged on the position, on the right side of the inertia loading part, of the horizontal iron (1). A servo motor (11) to be tested is connected with a left-end coupling of a stepped shaft (8) of the inertia loading part, the right end of the stepped shaft (8) of the inertia loading part is connected with an output shaft coupling of a dynamometer machine (2) of the torque loading part, and the RS-232C port of the vibration temperature-humidity loading part is connected with the RS-232C port of an industrial personal computer (13) of the automatic control part through wires.

The invention provides an envelope line iteration method for trace gas Raman spectral detection baseline correction; a numerical differential of denoised gas Raman spectrum W is solved by using diff function, a minimum value point is solved by using find function under a condition where slope of a minimal value point left curve is less than 0and slope of a right curve is greater than 0, a primary envelope line l is obtained by using cubic spline curve interpolating function spine and the minimum value point, gas Raman spectrum non-uniform front and rear spectral peak densities is segmented, envelope lien iteration concept is introduced, an envelope line L2 (i.e., gas Raman spectral baseline) is obtained by means of a number of iterations of dense segments is greater than a number of iterations of sparse segments, and W is subtracted by the baseline L2 to finish baseline correction for W. Processing results of the invention can accurately correct trace gas Raman spectral baselines, reducing corrected spectral luminescence and improving quantitative analytical accuracy of gas Raman spectrum.

The invention belongs to the technical field of pencil sharpening, and relates to a pencil sharpening machine. The problem that production efficiency of an existing pencil sharpening device is low dueto the fact that the existing pencil sharpening device usually adopts a method that clamping is performed on each pencil is solved, pencils can be continuously fed and sharpened, and pencil sharpening efficiency is improved. The pencil sharpening machine comprises a supporting part, a pencil feeding part, a rolling feeding part, a sharpening part and a collection part. The sharpening part is installed on the front side of the rolling feeding part, the collection part is installed on the left side of the rolling feeding part, the pencil feeding part is installed on the right side of the rolling feeding part, an anti-bridging device of the pencil feeding part is installed on the right side of a pencil feeding funnel, the rolling feeding part enables the pencils to rotate and also roll fromright to left, and continuous sharpening is realized.

The invention discloses a crushing machine. The crushing machine comprises a machine case, a machine case cover, a pedestal, a first outer crushing gear, a second outer crushing gear, a driving shaft, a first worm, a second worm and a motor, wherein the machine case cover is provided with a feeding port, a first transmission shaft is arranged at the terminal of the first outer crushing gear, a second transmission shaft is arranged at the terminal of the second outer crushing gear, and a regulating structure for regulating the distance between the first outer crushing gear and the second outer crushing gear is mounted at the terminals of the first and second transmission shafts. According to the crushing machine, the regulating structure is further added on the basis of the simplified structure and is used for regulating the distance between the first outer crushing gear and the second outer crushing gear.

The invention discloses a method and system for USB communication between a computing device and an FPGA. The method comprises the following steps: actually connecting a computing device end USB chip and an FPGA end USB chip through a USB bus; connecting the computing device end USB chip with a device driving program and connecting the FPGA end USB chip with an FPGA communication system hardware program; connecting the computing device driving program with a computing device user software program through a communication interface and connecting the FPGA communication system hardware program with an FPGA user hardware program through a communication interface; realizing the virtual connection between the computing device driving program and the FPGA hardware program through the actual connection of a USB bus, so as to realize the virtual connection between the computing device user software program and the FPGA user hardware program; and realizing the connection between the computing device and FPGA hardware through a communication interface. The method and system are capable of providing efficient, reliable and strong-interactivity data communication between the computing device and the FPGA, and are high in universality.

The invention relates to a lead screw guide rail reliability testing stand based on electro-hydraulic servo loading. The lead screw guide rail reliability testing stand comprises a lead screw guide rail part, a load applying part, and an automatic control part. The lead screw guide rail part comprises an upper sliding saddle, a lower sliding saddle, and a lead screw nut pair. Guide rails, which are cooperated with each other, are disposed between the upper sliding saddle and the lower sliding saddle. The upper sliding saddle is provided with a grinding wheel force bearing simulation device, and the lower sliding saddle is fixedly disposed on horizon iron by T-shaped screw threads. The lead screw nut pair is constituted by a lead screw nut and a lead screw, which are in a threaded cooperation. A lead screw is connected with a servo motor by a coupling. The load applying part comprises a base, which is fixedly connected with the horizon iron. The base is provided with a direction adjusting mechanism, and the upper surface of the direction adjusting mechanism is fixedly connected with a left support and a right support by supporting plates. A rotating shaft is fixedly connected between the left support and the right support, and is connected with an electro-hydraulic servo loading device. The automatic control part is connected with the lead screw guide rail part and the load applying part in a communicated manner.

The invention discloses an FRP (fiber reinforced plastic) adhesive strength integrated tester; a sliding plate is positioned between a first fixing end plate and a second fixing end plate, the first fixing end plate, the sliding plate and the second fixing end plate are arranged in parallel, a first test member and a second test member are passed through the two ends of the second fixing end plate and sliding plate respectively and are fixed to the second fixing end plate, two ends of four guide rods are fixedly connected to the first fixing end plate and the second fixing end plate respectively, the four guide rods are passed through the sliding plate respectively, four guide tubes are arranged in symmetry, a concrete member is arranged between the first test member and the second test member, a pressure sensor and a jack are arranged between the concrete member and the second fixing end plate, and an electromechanical dial gage is arranged on the sliding plate. With an oil pump and a jack used to provide pressure, and TDS-530 data acquirer, the pressure sensor and the electromechanical dial gage used to measure adhesive strength and slip between FRP and concrete, the integrated multifunctional tester is achieved.

The invention discloses an interlayer shearing rigidity testing method for a pavement layer and a bridge deck slab of a cement concrete bridge deck. The interlayer shearing rigidity testing method comprises the following steps: step 1, manufacturing a cement concrete bridge deck pavement layer and bridge deck slab shearing rigidity testing piece; step 2, horizontally clamping and fixing the testing piece on a positive-pressure simulation sub-system; step 3, vertically placing the testing piece; step 4, mounting an extensometer and a dial indicator; step 5, exerting positive pressure onto the testing piece by the positive-pressure simulation sub-system; step 6, simulating shearing test. The interlayer shearing rigidity testing method can test the shearing rigidity between the pavement layer and the bridge deck slab of the cement concrete bridge deck under different positive-pressure conditions, can realize shearing rigidity testing under different positive-pressure conditions through controlling the pressure exerted by a flat jack, and therefore, has strong university; as the size of the cement concrete bridge deck pavement layer and bridge deck slab shearing rigidity testing piece is specified, the standardability is good; vertical load is converted into an accurately simulated shearing force with relatively large adjustment range by a press, so that the testing accuracy is relatively high.

The invention discloses a chip plugging detection device for a chain plate type chip remover, and aims to solve the problem of chip plugging detection of the chain plate type chip remover in a conventional numerical control machine tool. The chip plugging detection device for the chain plate type chip remover consists of a sensing part and an alarming part, wherein the sensing part comprises an inlet light curtain sensor (1) and an outlet light curtain sensor (3); the alarming part consists of an alarming box (10) and an alarming circuit; the alarming circuit is arranged in the alarming box (10); the alarming part is arranged at the top of a chain plate type chip remover (5); the inlet light curtain sensor (1) is arranged at an inlet (X) of the chain plate type chip remover; the outlet light curtain sensor (3) is arranged at an outlet (Z) of the chain plate type chip remover; a signal output line of the inlet light curtain sensor (1) is connected with a pole of inlet alarming equipment (8) in the alarming part; a signal output line of the outlet light curtain sensor (3) is connected with a terminal of a coil of a delay relay (9) in the alarming part.

An assembly type low energy consumption curtain wall system and a construction method thereof are disclosed. The curtain wall system comprises a unit glass curtain wall and a stone curtain wall, whichare staggeredly distributed in a transverse direction and connected by a corner piece, and the unit glass curtain wall and \the stone curtain wall are connected to a main body structure through an adapter assembly; the unit glass curtain wall is connected to a second rectangular framework column in the adapter assembly through a hanging connection assembly, and the stone curtain wall is connectedto a second rectangular framework column in the adapter assembly through a connection assembly; and longitudinally adjacent glass curtain walls are in butt joint by a cross beam, and transversely adjacent glass curtain walls are connected to a same upright column. The system facilitates installation and disassembly, and has three-dimensional beauty by unitized design of the glass curtain wall andhanging connection of a U-shaped piece to the stone curtain wall; and the employed upright column and the cross beam form a closed drainage system, components and a thermal insulation board are connected, a construction method that combines heat preservation and drainage is employed, and the versatility of energy conservation and low energy consumption of the system is presented.

The invention discloses a multifunctional spectrum emissivity measurement apparatus and a measurement method thereof. An elliptical reflector B is arranged right above an aperture center of a standard blackbody, a mirror surface center position of the elliptical reflector B is fixedly connected with a rotating shaft of a stepping motor B through an elliptical arm B, an elliptical reflector A is arranged right above a surface center of a sample, a mirror surface center position of the elliptical reflector A is connected with the top portion of an elliptical arm A, the bottom of the elliptical arm A is fixedly connected with a rotating shaft of a stepping motor A, one side of an electric adjustable reflector is provided with a parabolic reflector used for reflecting radiation energy reflected by the electric adjustable reflector, and one side of the parabolic reflector is provided with a detection apparatus used for receiving the radiation energy reflected by the parabolic reflector. The invention also discloses a measurement method of the multifunctional spectrum emissivity measurement apparatus. According to the invention, the spectrum emissivity of a material is measured by use of two different measurement methods through one apparatus, and through comparison, the accuracy of measurement data can be improved.

The invention belongs to the technical field of reliability tests for dynamic vehicle components, and particularly relates to a dynamic vehicle seat reliability test device. The reliability test device overcomes the problem that a current reliability test device cannot perform the reliability test on a bullet train seat in the prior art. The device comprises a ground flat iron, a backrest loadingdevice, a rotary loading device, a seat rotation starting device, a backrest starting device and a console. The backrest loading device comprises four backrest loading units. The four backrest loadingunits are respectively arranged on the ground flat iron 1 on the left side and the right side of the bullet train seat. The rotary loading device is arranged on one side of the bullet train seat. Theaxis of a first tension and pressure sensor of the seat rotation starting device is perpendicular to the lower surface of the pressure rod of the seat rotation starting device. The backrest startingdevice comprises four backrest starting units. The four backrest starting units are respectively arranged right below two manual switches of the bullet train seat. When the backrest of the bullet train seat rotates by 180 degrees, the four backrest starting units are still right below the two manual switches of the bullet train seat.

The invention discloses a multi-working-condition loaded cutting fluid centralized filtering system reliability test device and method. The following test steps are implemented by the cutting fluid centralized filtering system reliability test device: the step 1, determining the structural composition of the tested cutting fluid centralized filtering system and the specification and model of eachtested part, and completing the early-stage preparation of the test; the step 2, determining the load condition of the cutting fluid in the tested cutting fluid centralized filtering system; the step3, performing a reliability test according to specifications; the step 4, detecting relevant performance parameters in the cutting fluid centralized filtering system; and the step 5, performing dataprocessing, and calculating a reliability function, a fault probability function and average fault interval working time MTBF of the cutting fluid centralized filtering system. And the test period during single-working-condition or multi-working-condition simulation is shortened.

The invention discloses a hand operated grinding mill comprising a main body of the hand operated grinding mill and a rocker arm matched with the main body. The main body of the hand operated grinding mill comprises a grinding mill frame; two ends of the grinding mill frame are provided with a pinion shaft and an intermediate gear shaft in parallel; a core grinding shaft is arranged on the grinding mill frame above the intermediate gear shaft; a gearwheel and a core grinding are arranged by taking the core grinding shaft as a central shaft, a second pinion and an intermediate gear are arranged at two ends of the intermediate gear shaft by taking the intermediate gear shaft as a central shaft, a first pinion is arranged by taking the pinion shaft taken as a central shaft, the gearwheel is engaged with the second pinion, and the intermediate gear is engaged with the first pinion; and the main body of the hand operated grinding mill is also provided with a multi-connecting-rod mechanism which is used for providing reverse resistance when the grinding mill reels off. A simple connecting-rod-operated separated friction plate is used to lock a friction wheel to provide reverse resistance when the grinding mill reels off, thereby achieving the labor-saving effect of reducing labor input.

The invention discloses an electromechanical product rust removing device which comprises a rust removing device body, a dust removing bin and a bearing plate, wherein the dust removing bin is fixedlyconnected with the top of the dust removing device body; the bearing plate is fixedly connected with the bottom of the dust removing device body; a first grinding knife is fixedly connected with themiddle part of one side of the interior of the dust removing bin; a second grinding knife is fixedly connected with the top of one side of the interior of the dust removing bin; spray heads are fixedly connected with the interior of the dust removing bin; and a clamping device is movably connected with the bottom of the interior of the dust removing bin. The grinding knives can be driven by the clamping device to clean up rust on the surface of a product more rapidly, so that the high efficiency of the rust removing device body can be reflected; through the strong control capability of an NS16032 control chip, the convenience and the rapidness of the dust removing device body can be reflected; through a plating liquid, the product of which the rust is removed can have the anti-rust function after being treated, and then the multifunctionality of the dust removing device body can be reflected; and the electromechanical product rust removing device is convenient to use, is high in safety, is applicable to the technical field of dust removing devices, and has broad development prospects in the future.

The invention discloses multifunctional cutting pliers. The multifunctional cutting pliers comprise two plier bodies which are oppositely arranged, wire stripping holes, a nut fastening device, a clamping device and an auxiliary handle bar. Each plier body is sequentially provided with a plier nozzle, a plier gill and a handle bar from left to right. The two plier bodies are hinged at the positions of the plier gills. The wire striping holes are formed in the butt joint position of the two plier nozzles. The right end of each plier nozzle is provided with a first limiting hole. The left end of each handle bar is provided with two second limiting holes. The nut fastening device comprises a nut sleeve and two vertical rods. The two vertical rods are welded to the bottom end of the nut sleeve and are further matched with the two first limiting holes or two second limiting holes. The clamping device comprises a hinged base, a bolt and a hold-down nut. The lower end of the bolt is hinged to the inner side of one handle bar through the hinged base, and the other handle bar is provided with a through hole corresponding to the bolt. The upper end of the bolt penetrates through the through hole and is further matched with the hold-down nut. The auxiliary handle bar is arranged at the right ends of the handle bars.

The invention discloses a base of a computer case, comprising a base body, guide rails are arranged on both sides of the base body; a lifting surface is arranged on the top of the base body; the lifting surface is connected with the guide rail, and can slide up and down along the guide rail; There is a lifting support under the lifting surface, one end of the lifting support is fixedly connected with the lifting surface, and the lifting surface can slide up and down through the lifting support; a motor and a battery are provided under the lifting support; buttons are provided on the right side of the base body, It is used to adjust the lifting of the lifting surface; the motor is used to drive the lifting bracket up and down; the motor, battery and buttons form an electrical connection; the bottom surface of the base body is provided with wheels; The stop bar is depressed and the wheels cannot roll. The base of the computer case of the present invention can be rolled on the ground, and the height of the computer case placed on it can also be adjusted by buttons, which reflects the multifunctionality of the base and meets the needs of users.

The invention provides a method for establishing a fingerprint spectrum of flavonoid components in a ginkgo leaf extraction intermediate or a preparation thereof and the fingerprint spectrum established by the method. The method for establishing the fingerprint spectrum comprises the step of detecting the relative retention time and / or the relative peak area of flavonoid components in the ginkgo leaf extraction intermediate or the preparation thereof by taking narcissoside as a reference and adopting a high performance liquid chromatography. The fingerprint spectrum comprises 23 common peaks. The invention also provides an application of the the method for establishing the fingerprint spectrum and / or the established fingerprint in true and false identification and component detection of the ginkgo leaf extraction intermediate and / or the preparation thereof.

The invention discloses a beam length variable simply supported beam and continuous beam self-vibration characteristic test platform, which comprises a sliding support, a limiting support, a movable base, a fixed base, a foundation platform, an acceleration sensor, a computer, a dynamic signal testing and analyzing system and a force hammer sensor, and is characterized in that the movable base and the sliding support can be adjusted and fixed according to the span of a test beam, a rolling bearing can be moved along a sliding rail, and fine adjustment is carried out on the distance between the sliding support and the limiting support; after the distance between the sliding support and the limiting support is determined, and limiting boards are placed at a gap between the bearing and the sliding rail so as to limit and fix the bearing. The test beam is placed on the sliding support and the limiting support; the sliding support and the limiting support are respectively fixed with support ends of the test beam through hook bolts and a double-hole clamping plate; the acceleration sensor is arranged on a test point at the surface of the test beam, and the acceleration sensor and the force hammer sensor are connected to the dynamic signal testing and analyzing system and are electrically connected with the computer; and a dynamic load is applied through the force hammer sensor, and thus a self-vibration characteristic test can be performed. Through movement of the movable base or increasing the number of the movable base, a test for self-vibration characteristics of simply supported beams or continuous beams with different beam lengths and spans can be realized, and the universality and the accuracy of the test platform are reflected.

The invention relates to a workbench of a heavy type numerical control vertical lathe and a feeding mechanism reliability test system thereof so that a problem that the existing reliability testing apparatus can not carry out reliability testing on the workbench of the heavy type numerical control vertical lathe and the feeding mechanism thereof can be solved. The test system comprises a balancingweight inertial loading and loading auxiliary device portion, a radial loading portion, an axial loading portion, a torque loading portion and an automatic control portion; the radial loading portionincludes four sets of radial piezoelectric ceramic loading devices distributed uniformly around the workbench. The axial loading portion includes an axial piezoelectric ceramic actuator, an axial tension-pressure sensor and an axial displacement sensor. The torque loading portion includes a hydraulic pump, a torque sensor, a hydraulic servo valve and a photoelectric rotation speed sensor. The automatic control portion includes a radial controller, an axial controller, a torque controller, and a workbench motion control instrument.

The invention discloses a mobile charging device for a new energy vehicle, includes a mounting plate and a connecting shaft, the upper end of the mounting plate is provided with a first sliding rail,and the left side of the inner lower end of the first slide rail is provided with a first groove, The first groove and the first sliding rail are integrally connected by pressing, the left lower end of the first sliding rail is embedded with a first protrusion, and the front side of the first sliding rail is connected with a sliding block, the first protrusion and the first sliding rail are welded, and the sliding block and the first sliding rail are slidably connected. The new energy vehicle charging device is provided with a first groove which is the same size as the first protrusion, so that the first protrusion can be inserted into the inside of the first groove, so that a plurality of first sliding rails can be coincided with each other and assembled, and the sliding distance range ofthe charging device can be increased.

The invention discloses a testing device for multiple channels of LED lamp beads. The testing deviceis formed by assembling and connecting an MCU, an analog switch module, a detection module and more than three sets of testing assemblies; each set of testing assembly is corresponding to any single LED lamp bead in a testing object in a matched mode. The detection module is connected between the MCU and the analog switch module and exchanges an analog switch control signal, an LED lamp bead working current sampling signal and a photoresistor feedback signal; and the MCU is a programmable processor and is preset with a working current and a threshold value for judging whether the brightness of the lamp beads is qualified or not according to the photoresistor feedback signal. The MCU controls the analog switch module to switch the connected lamp beads to be detected and receives fed-back current signals and resistance signals to intelligently judge the quality of the lamp beads. The testing device has the advantages of low cost, process automation, flexibility improvement, visual and healthy test result and the like, and breaks through the limitation of test space; in addition, according to the testing method, the MCU is easy to adjust the threshold value, so that testing requirements can be met, and universality is embodied.

The invention discloses a cylinder container cleaner, which comprises a driving box and a first cleaning brush body. A motor is arranged in the driving box, a rotating shaft is connected to the driving shaft of the motor, and a first rotating shaft is arranged at the end of the rotating shaft. The cleaning brush body, the first cleaning brush body is a cylindrical cylinder structure, and several connecting columns are arranged between the first cleaning brush body and the rotating shaft; the first cleaning brush body is rotated and cleaned by rotating the rotating shaft. The invention provides a cylinder container cleaner, which can quickly clean the inside of the cylinder container, and the cleaning is cleaner and the operation is simple.

The invention discloses a part space size detection method, and the method comprises the steps: enabling an angle ruler and a right-angle ruler to be matched for use when the length dimension betweena spatial point and a solid edge is measured, and respectively defining two included angle edges of a non-90-degree included angle of the part through the long ruler edge of the right-angle ruler andthe angle ruler edge of the angle ruler; constructing extension lines of two included angle edges, constructing a space intersection point of the extension lines of the two included angle edges, defining a part entity edge by using a short ruler edge of the square, and using a vernier caliper to know the length dimension between the part entity edge and a space point; when the hole distance size between the space point and the solid hole is measured, configuring a corresponding plug block for the solid hole, inserting the plug block into the solid hole in a sliding fit manner, constructing a hole axis of the solid hole, then using a straight ruler and a vernier universal ruler in a matched manner, and respectively constructing an extension line and an extension line space intersection point of two non-90-degree included angle sides; and knowing the pitch size between the part solid hole and the space point by matching with a vernier caliper.

The invention discloses a double-signal miRNA-21 detection method based on three-dimensional DNA Walker and MOF-Fe (II) induced generation of Turnskill blue. The method comprises the following steps: mixing and incubating avidin modified MB and a biotin modified hairpin strand H1, and then mixing and incubating with a hairpin strand H2-Au NP-GOx probe and a miRNA-21 solution, so as to obtain a DNA Walker product; adding the DNA Walker product into a glucose solution to carry out catalytic reaction, and carrying out magnetic separation to obtain a solution containing hydrogen peroxide; and enabling the MOF-Fe (II) to react with a solution containing hydrogen peroxide and induce generation of TB on an electrode to realize electrochemical detection, or enabling the MOF-Fe (II) solution containing hydrogen peroxide to induce generation of TB in the solution to realize photo-thermal detection, so that the method can be used for dual-signal detection of miRNA, and is low in miRNA target object detection lower limit and high in selectivity.

The invention discloses a numerical control machine tool flexible chuck reliability test device, and overcomes the problem that there are not flexible chuck reliability test devices. The numerical control machine tool flexible chuck reliability test device comprises a tested flexible chuck fixing part (I), an analog loading part (II), a fault detection part (III), an automatic control part (IV) and horizontal iron (64). The horizontal iron (64) is installed on a foundation, the tested flexible chuck fixing part (I) is installed on one side of the horizontal iron (64) in the vertical directionof the horizontal iron (64), the analog loading part (II) is installed on the other side of the horizontal iron (64) in the vertical direction of the horizontal iron (64), the fault detection part (III) is installed on the horizontal iron (64) between the tested flexible chuck fixing part (I) and the analog loading part (II) in the vertical direction of the horizontal iron (64), and the automaticcontrol part (IV) is installed on the foundation at one side of the horizontal iron (64) through a control cabinet (44) in the automatic control part (IV).

The invention provides an establishing method of the fingerprint of a traditional Chinese medicinal composition preparation, and a technology for detecting the components of the traditional Chinese medicinal composition preparation by using the fingerprint established through the method. The raw materials of the traditional Chinese medicinal composition preparation comprise Rhizoma Cibotii, Radix Kadsurae Coccineae,Philippine flemingia root, steamed Chinese Taxillus Twig, steamed Ligustri Lucidi Fructus, Caulis Spatholobi, Fructus Rosae Laevigatae, Radix millettiae Speciosae and brine processed semen cuscutae. The establishing method of the fingerprint is characterized in that the retention time of every compound in the traditional Chinese medicinal composition is detected through high performance liquid chromatography; and the conditions of the high performance liquid chromatography are as follows: octadecylsilane bonded silica is adopted as a stationary phase, a mobile phase comprises acetonitrile, methanol and a 0.1% aqueous phosphoric acid solution, gradient elution is carried out for 0-150 min, and the ultraviolet detection wavelength is 230 nm. The relative retention times and the relative peak areas of 43 common peaks in the fingerprint established through the method are calibrated by adopting the absorption peak of protocatechuic acid as a reference peak.

The invention discloses a tool-blocking tool-dropping fault early-warning device for a circular disc type manipulator tool magazine, and aims to carry out early-warning for tool-dropping and tool-blocking faults of an existing numerical-control machine circular disc type manipulator tool magazine. The tool-blocking tool-dropping fault early-warning device comprises two early-warning units, wherein each early-warning unit consists of a color mark sensor, a beam, an alarm and a bracket. The tool-blocking tool-dropping fault early-warning device for the circular disc type manipulator tool magazine disclosed by the invention can comprehensively detect that screw joint between a shank and a blind rivet loosens, can detect screw joint looseness with different degrees between the shank and the blind rivet according to the needs, is suitable for circular disc type manipulator tool magazines of different models, shows flexibility and universality, can automatically operate for a long time under an unmanned monitoring state, can reduce labor intensity, exposes and arouses product faults, provides practical essential data for reliability evaluation of the circular disc type manipulator tool magazine, and also can be used for screening chain-plate circular disc type manipulator tool magazines.

The invention discloses a hay cutter based on animal consumption, which comprises a pulverizer shaft and a body made of alloy material. A touchable display screen is provided, the shell of the body is fixedly connected with the touchable display screen, a protective shell is provided on the side of the body, the body and the protective shell are tightly welded, and the impurity discharge port can discharge the impurities in the forage, which is convenient for animals. Eating, ensuring the health of animals, greatly embodies the versatility of this device. The installed body shell, sprayed insulation layer, and anti-corrosion layer can prevent the pillar from being corroded by rainwater, and effectively crush the grass that is based on animal consumption. Machine protection is conducive to prolonging the service life of this kind of hay cutter based on animal consumption.