43results about How to "Suitable for actual needs" patented technology

The invention discloses a high-power heavy low seam mining machine, which comprises a machine body, a left traction part, a right traction part, a left cutting part, a right cutting part, a swinging arm elevating hydraulic system and an electric control system, wherein the electric control system comprises an electric control box and a controller; the left cutting part comprises a left swinging arm, a left roller and left cutting motors; the right cutting part comprises a right swinging arm, a right roller and right cutting motors; the left traction part comprises a left traction motor and a left traction transmission mechanism; the right traction part comprises a right traction motor and a right traction transmission mechanism; the left cutting motors, the right cutting motors, the left traction motor, the right traction motor and swinging arm elevating hydraulic system are controlled by the controller; and two left cutting motors and two right cutting motors are provided. The high-power heavy low seam mining machine has the advantages of reasonable design, high overall power, high mining efficiency, stable and reliable working performance and good using effect, and can be used for solving the problems of low power, low mining efficiency, poor using effect and the like existed in the conventional coal mining machine in the mining process of a low coal seam.

The invention discloses an SDH (Synchronous Digital Hierarchy) multi-domain comprehensive test device and a test method thereof, mainly solving the problem that single test equipment tests the network performance of an ATM (Asynchronous Transfer Mode) network transmitting in an SDH mode or an IP (Internet Protocol) packet network packed by adopting an HDLC (High level Data Link Control) protocol.The SDH multi-domain comprehensive test device mainly comprises a test data processor, an SDH processor and a microcomputer control system. The test method comprises the following steps of: (1) initializing the working mode of the SDH multi-domain comprehensive test device; (2) generating test information cells or packets of the corresponding working mode by the test data processor, mapping into an SDH frame and sending to a tested network element by the SDH processor; (3) extracting the test information cells or the packets from the loopback SDH frame by the SDH processor; (4) processing thereceived test information cells or packets by the test data processor; and (5) analyzing and displaying a test result by the microcomputer control system. The invention can not only test a single-mode or multi-mode multi-rate SDH network, but also realize that the single equipment tests the network performance of the ATM network and the packet network, and has easy and convenient operation and high cost performance.

The invention relates to a shedding mechanism for an air jet loom. The mechanism comprises a left crank, a left connecting rod, a right crank, a right connecting rod, an oscillating bar and a sliding block arranged on the oscillating bar, wherein the left crank is provided with the A end and the B end, the A end is hinged on a machine frame, and the B end is hinged with one end of the left connecting rod; the right crank is provided with the C end and the D end, the C end is hinged on the machine frame, the D end is hinged with one end of the right connecting rod, the other end of the left connecting rod and the right connecting rod is correspondingly hinged with both ends of the oscillating bar respectively; a straight line passing the A end of the left crank and the C end of the right crank is defined as the X axis, the central point of a connecting line of the A end and the B end is defined as the base point O, and a straight lien passing the O point and vertical to the X axis is defined as the Y axis; and when the left and the right cranks rotate, the sliding block slides along the direction of the Y axis. Two sets of crank connecting rod mechanisms jointly drive the oscillating bar, and the relationship of the geometrical dimensions of all rods is controlled to ensure that the shedding mechanism keeps low oscillation while carrying out the shedding motion.

The invention relates to a package generation method and system of a C2B2C mode. The method comprises the steps that 1) a background module receives a request for establishing a package by oneself from a subscriber, and sends the request to a package combination module, and the package combination module displays all pre-stored basic function information for package establishment; 2) the package combination module receives a selection instruction from the subscriber, and according to the selection instruction, the package combination module combines the basic function information selected by the subscriber to generate the self-established package; 3) a pricing module calculates the self-established package in a combined manner to obtain a price of the package, and the self-established package and the package price are previewed in a combined manner; 4) whether a confirmation instruction is received from the subscriber is determined, if yes, a step 5) is turned to, and otherwise, the step 2) is turned to; and 5) a package issuing module generates a new package according to the self-established package and the package price, and stores and issues the new package. According to the invention, the subscriber can participate in package establishment, the initiative of the subscriber is improved, and the satisfaction degree of the subscriber is improved.

The invention discloses a variable gain audio amplifier, which includes a resistor R1, a current follower and a gain controller; the resistor R1 is used to increase the input impedance of the current follower; the current follower is a common base of a crystal triode pole amplifier; the gain controller includes an input impedance controller, an input current controller and an output impedance controller; the input impedance controller includes a potentiometer RP1; the input current controller includes a potentiometer RP2 and a resistor R2, wherein One end of the potentiometer RP2 is connected to the input end of the input current controller, and the other end of the potentiometer RP2 is grounded; one end of the resistor R2 is connected to the input end of the input current controller, and the other end of the resistor R2 is connected to the input of the current follower end connection. The design of the invention is scientific and reasonable, and can effectively amplify the voltage in the audio circuit, so that the voltage gain can be adjusted at will, and solve the problems of narrow intermediate frequency band and poor frequency characteristics of the existing audio amplifier.

The invention discloses a multiplying power adjustment method of a wide spectral line projection optical system. The multiplying power adjustment method includes the following steps: providing the reduced wide spectral line projection optical system which approaches to a telecentric optical path at object space and image space, wherein the wide spectral line projection optical system sequentially comprises a first lens set with the positive focal power, a variable-aperture diaphragm, a second lens set and a third lens set with the positive focal power from an object plane to an image plane, the second lens set meets the condition that vd=(nd-1)/(nF-nC) and comprises at least two positive lenses smaller than 1.65 in nd and larger than 65 in vd and at least two negative lenses larger than 1.50 in nd and smaller than 55 in vd, in the third lens set, the lens closest to the image plane is a negative lens, the negative lens has a concave face facing the image plane and meets the condition that the nd is smaller than 1.66, the vd is larger than 58, and ri/ti is larger than 0.6 and smaller than 5.0, and the lens sets meet the condition that f1/L is larger than 0.05 and smaller than 1.3, |f2|/L is larger than 0.3, and f3/L is larger than 0.03 and smaller than 0.8; adjusting the displacement of the lenses in the first lens set to adjust the projection multiplying power of the optical system.

A box body with a left and right compartment structure for a dust collection vehicle, mainly including: a power compartment, a filter silo seal door, a filter silo, a filter cartridge, an overhead filter, a garbage bin seal door, a dust suction port duct, and a garbage bin , deflector; it is characterized in that: the rear box is separated from the left and right by a partition, and the connection method is: the partition partition divides the box into left and right filter bins and garbage bins, and the top filter screen is connected to the filter cartridge Bin and garbage bin, the dust suction duct is installed on the right side of the garbage bin. The garbage bin and the filter bin are separated left and right and the garbage bin is fully welded. When working in rainy days, the water in the garbage bin will not reduce the suction of the vacuum truck due to the wet filter cartridge; it is more convenient to clean the fine dust in the filter bin; The suction port ducts are concentrated on the right side of the vacuum truck, which is more suitable for the actual needs of the vacuum truck on the highway.

The invention provides host bacteria, and also provides an avian influenza universal vaccine; the avian influenza universal vaccine takes spore probiotics as a mucosal delivery vector. A CTL epitope peptide of H7N9 or other type A avian influenza virus subtypes, a cytokine IL-2 and a brevibacterium mucosal immune vaccine vector are organically combined for the first time and have complementary advantages. For the H7N9, H5N1, H5N6, H7N9, H7N2, H7N3, H7N7, H9N2, H10N7 and other type A avian influenza virus subtypes, a CTL epitope antigen is designed and screened, the spore vector is used for delivery of the antigen epitope; a spore and a spore-displayed recombinant IL-2 are used as adjuvants, and the immune type and immunoreaction level are regulated.

A skin-beautifying seabuckthorn tea in the form of particle, powder, capsule, or table is prepared from seabuckthorn leaf, tuckahoe, jujube, Momordica grosvenori and haw through drying, breaking and homogenizing. It is suitable for woman.

The invention provides a purifying method of medium molecular weight hydroxyethyl starch. The method comprises the following steps: 1, mixing an aqueous solution of medium molecular weight hydroxyethyl starch obtained in an ultrafiltration step of a medium molecular weight hydroxyethyl starch preparation technology with C1-C3 monohydric alcohol to precipitate the medium molecular weight hydroxyethyl starch from the aqueous solution; and 2, separating the medium molecular weight hydroxyethyl starch precipitated in step 1 to obtain purified medium molecular weight hydroxyethyl starch. The invention also provides the medium molecular weight hydroxyethyl starch obtained through the method. The method has industrialized values and can improve the internal quality of a product. The method has the advantages of reduction of the bacterial endotoxin and glycol level of the finished product, economy, energy saving, environmental protection and energy consumption reduction, and is suitable for real needs of the industrialized mass production.

The invention discloses a wide spectral line projection optical system and a photoetching device. The wide spectral line projection optical system is a reduced projection optical system which approaches to a telecentric optical path at object space and image space, and sequentially comprises a first lens set with the positive focal power, a variable-aperture diaphragm, a second lens set and a third lens set with the positive focal power from an object plane to an image plane. The second lens set meets the relation that vd=(nd-1)/(nF-nC) and comprises at least two positive lenses smaller than 1.65 in nd and larger than 65 in vd and at least two negative lenses larger than 1.50 in nd and smaller than 55 in vd. In the third lens set, the lens closest to the image plane is a negative lens, the negative lens has a concave face facing the image plane and meets the relation that the nd is smaller than 1.66, the vd is larger than 58, and ri/ti is larger than 0.6 and smaller than 5.0. The lens sets meet the relation that f1/L is larger than 0.05 and smaller than 1.3, |f2|/L is larger than 0.3, and f3/L is larger than 0.03 and smaller than 0.8.

A hydrocyclone desanding device comprises a sand separation portion and a sand hopper portion, the sand hopper portion is arranged below the sand separation portion and connected with the same in a transitional manner through an annular slope, the sand separation portion comprises a cylindrical cavity, a central beam barrel, a central cone and a suspension sleeve, the suspension sleeve is an annular plate arranged on a middle-upper portion in the hydrocyclone desanding device, a tangential water inlet is formed in an outer wall of a middle portion of the cylindrical cavity, a flow guide plateis arranged on an inner wall, close to the tangential water inlet, of the cylindrical cavity, an angle ranging from 130 degrees to 180 degrees is formed between the flow guide plate and the tangentialwater inlet, a water outlet and a dreg discharging port are formed in the circumference of an upper portion of the cylindrical cavity, and an annular suspending dreg collection area is formed betweenthe inner wall of the cylindrical cavity and an outer wall of the suspension sleeve. The hydrocyclone desanding device has the advantages of reasonable structural design, convenience in operation andutilization, low operation and maintenance cost, high automaton and intelligentization degrees and the like, and by the aid of the hydrocyclone desanding device, desanding efficiency can be increasedfor sewage treatment, and pollutants such as suspending dregs and grease carried in water can be removed at the same time.

The invention relates to a novel residual current circuit-breaker circuit which comprises a power input. The novel residual current circuit-breaker circuit is characterized by further comprising a power circuit, a residual current signal conditioning circuit, a residual current detection and control unit, a circuit needed by the residual current detection and control unit, a residual current test circuit, an overvoltage detection circuit and a trip circuit, wherein the power circuit comprises a surge suppression circuit, a half-wave rectifying circuit, a resistance voltage reduction circuit , an external voltage stabilizing circuit and a filter circuit. The novel residual current circuit-breaker circuit is simple in design, and high in electromagnetic compatibility resistance characteristic, a residual current circuit-breaker is completely identical with small residual current circuit-breaker circuits in size, and the residual current circuit-breaker circuit solves the problem that a traditional small overvoltage protection type residual current circuit-breaker needs to be provided with an overvoltage module, as a result, the size of the traditional small overvoltage protection type residual current circuit-breaker is increased, and the traditional small overvoltage protection type residual current circuit-breaker can not be conveniently assembled on a distribution box in a matched mode. The novel residual current circuit-breaker circuit is simple in structure design, low in production cost, and quite suitable for meeting the actual market requirements.

The invention relates to a quick alarm and instant video and audio communication system and method, and the system comprises a repair server which is connected with a cloud curtain server and a socialtool server, and is connected with at least one repair gateway with a database through the Internet. The repair gateway is connected with the information interaction terminal and a plurality of repair button devices with independent numbers through a repair special wireless communication network; and the repair button device is provided with an independent power supply unit, and the independent power supply unit is connected with a trigger unit with an alarm button, a heartbeat unit, a wireless communication unit and a heartbeat indication unit. According to the invention, the repair button device and the independent repair communication channel are arranged on the site of the monitoring equipment, so that a straight-through interaction channel can be quickly and conveniently establishedbetween the site and maintenance personnel, communication can be carried out in multiple modes such as voice, video, image and data, and if multi-party communication is needed, a conference mode can be entered through social software; and therefore, the convenient remote technical support is realized.

The invention relates to the field of stereoscopic scanning and discloses a foot scanner calibration method and device; in an embodiment of the invention, the foot scanner calibration method comprises: acquiring an image including the calibration device; segmenting the image according to a preset segmenting manner to obtain N image blocks, with N being a natural number greater than 1; analyzing brightness of each of the N images to obtain respective high-brightness areas of the N images; using the N high-brightness areas as calibration points. The embodiment of the invention also discloses a foot scanner calibration device. By using the foot scanner calibration method and device according to the embodiment of the invention, a foot scanner can be calibrated automatically, the automation level of calibration steps is increased, and calibration efficiency and accuracy can also be improved.