34results about How to "Change does not happen" patented technology

The invention discloses an optical waveguide chip and PD (photodiode) array coupling packaging structure. The optical waveguide chip and PD array coupling packaging structure comprises a soleplate, a waveguide supporting rack, a waveguide chip and a substrate, wherein a third sign line surface is arranged on the back surface of the substrate of the waveguide chip; a first sign line surface and a second sign line surface are arranged on the substrate respectively; the PD array with an upward photosensitive surface is adhered to the first sign line surface; a U-shaped spacer with an upward opening is adhered to the second sign line surface; the groove width of the U-shaped spacer is equal to the width of the waveguide chip; and the waveguide chip, of which the third sign line surface and the second sign line surface have corresponding widths, penetrates through a U-shaped groove of the U-shaped spacer and is positioned over the PD array. The optical waveguide chip and PD array coupling packaging structure can control axial positions, so that passive alignment of the optical waveguide chip and the PD array can be achieved.

The invention discloses a two-stage pressure reduction regulating valve. The two-stage pressure reduction regulating valve solves the technical problems that an existing single-stage pressure reduction valve cannot meet the higher pressure accuracy requirement and the requirement for stable output of quantitative pressure. According to the technical scheme, the two-stage pressure reduction regulating valve comprises a valve body, a first-stage pressure reduction piston, a second-stage pressure reduction piston and an exhaust piston. The first-stage pressure reduction piston is arranged in a valve chamber, the second pressure reduction piston is arranged in the valve chamber, and the exhaust piston is arranged in the valve chamber and located between the first-stage pressure reduction piston and the second-stage pressure reduction piston. The two-stage pressure reduction regulating valve has the advantages that two sets of pressure reduction mechanisms are adopted, and when the pressure of a gas source changes, gas passing a gas inflow mechanism enters the body and then is subjected to two-stage pressure reduction; the outlet flow can be guaranteed, the pressure does not change, and the accuracy of the output flow is kept stable and accurate.

The present invention is to provide a nitrogen-filled spleen-invigorating Bazhen cake and a nitrogen-filled packaging method, which overcomes the defects of the prior art, and is to seal and package the spleen-invigorating Bazhen cake in a packaging bag under nitrogen-filled environmental conditions, especially The fatty acid data of Jianpi Bazhen Cake medicine will not increase, thus effectively improving the stability and safety of Jianpi Bazhen Cake medicine, thereby greatly extending the validity period of the drug, and improving the economical value of Jianpi Bazhen Cake medicine sex, and the production process is simple.

The invention provides an anti-explosion movable joint and a connecting nut mounting method thereof. The anti-explosion movable joint comprises a first joint part, a connecting nut arranged on the first joint body, a second joint part connected with the connecting nut in a threaded mode and a seal washer. The first joint part comprises a first joint body, a connecting wall, a connecting neck and a joint clamping ring, wherein the edge of one end of the first joint body inwards extends to form the connecting wall in the radial direction, the end of the connecting wall outwards extends to form the connecting neck in the axial direction, and the end of the connecting neck outwards extends to form the joint clamping ring in the radial direction. One end of the connecting nut is provided with a nut clamping ring formed by the means of the method the connecting nut inwards extends in the radial direction, the connecting neck is sleeved with the nut clamping ring, and the nut clamping ring and the joint clamping ring are hooked with each other. Under the condition that the thread sizes of the first joint part and the second joint part are changed, it is ensured that the sizes of the connecting nut and a thread thereof are not changed, so that production materials are saved, and production cost is lowered.

The invention provides a pulse energy storage capacitor packaging method and packaging structure, belonging to the energy storage capacitor technology field. The pulse energy storage capacitor packaging method comprises steps of arranging a plurality of pulse energy storage capacitors together and connecting and fixing the plurality of pulse energy storage capacitors in parallel to form a pulse energy storage capacitor set, and arranging at least one positive electrode terminal lead and at least one negative electrode terminal lead for the capacitor set, packaging the pulse storage energy capacitor set inside a packaging housing through a glue solution for potting, wherein the positive electrode terminal lead and the negative electrode terminal lead are left outside of the packaging housing. The pulse energy storage capacitor packaging method and packaging structure can arrange a single pulse energy storage capacitor, can package the plurality of arranged pulse energy storage capacitors, can connect the pulse energy storage capacitor set to other members through the positive electrode terminal lead and the negative electrode terminal lead which are exposed outside, and can fix thepackaging housing through a fixing member. The pulse energy storage capacitor packaging method and packaging structure realize three-dimensional spatial arrangement of the pulse energy storage capacitors, improve a space utilization rate, simplify a fixation mode of the capacitor, make the pulse energy storage capacitor barely be under stress, and greatly improve safety and reliability of operation of an amplifier.

The invention belongs to the field of mechanical automation, and particularly relates to a full-automatic battery changing system for electric vehicles. The full-automatic battery changing system comprises a control system, a positioning platform, an execution system and a battery compartment used for storing batteries; the positioning platform is used for positioning a vehicle which is about to run into a battery changing station; the control system acquires electric vehicle positioning completion information and transmits the information to the execution system; the execution system is used for executing operation for changing batteries of the electric vehicle. The full-automatic battery changing system has the advantages that the full-automatic battery changing system is high in automatic management level and battery changing efficiency when in electric vehicle battery changing procedures, the batteries can be accurately positioned in the battery changing procedures, and the purpose of applying the full-automatic battery changing system to different types of vehicles and different types of batteries can be achieved.

The invention discloses a waterproof and heat-resistant exterior wall coating and a preparation method thereof. The exterior wall coating comprises the following components in parts by weight: 35-38 parts of ethylene-tetrafluoroethylene copolymer, 8-12 parts of hydroxypropyl cellulose, 21-23 parts of oleic acid, 5-7 parts of heptadecanoic acid, 6-8 parts of ethyl acetoacetate, 12-14 parts of diethyl carbonate and 14-17 parts of polyurethane. All the components of the coating can enable the prepared exterior wall coating to have good waterproof and heat-resistant functions by stirring, ultrasonic treatment, shearing and other means.

The invention discloses a low dropout linear regulator with quick transient response and high stability. The low dropout linear regulator comprises a power adjusting pipe, an error amplifier circuit and an ESR resistor. The error amplifier circuit comprises a main operational amplifier circuit and a buffering drive circuit. The low dropout linear regulator further comprises a transient response improving circuit and a compensation network circuit. The low dropout linear regulator has the advantages that a compensation network is provided to guarantee that when load currents change, phase margin doe not change, and stability of the low dropout linear regulator is guaranteed; an induction capacitor is additionally arranged on the compensation network, so that change of poles can be quickly tracked, moment stability can be maintained when load current jump occurs, and oscillation of output voltages is prevented; a transient response improving circuit structure is designed to improve load transient response, it is guaranteed that output of the transient response improving circuit has quick transient response capacity when the load currents of the output end jump, and grain and the phase margin can not change greatly.

The invention discloses a chair easy to pull suitable for the aged. The chair comprises a chair body and idler wheel mechanisms arranged on the bottom of each front leg of the chair body. Each idler wheel mechanism comprises a castor fixing expand tube inserted into the bottom of the corresponding leg in a matched mode, a castor spindle fixedly connected with the castor fixing expand tube, and a semispherical connecting cover arranged at the lower end of the castor spindle in a rotary mode, wherein an outer convex ring is formed on the open edge of the connecting cover, a semispherical rolling cover is arranged in the outer convex ring through a bearing in a rotary mode, and the diameter of the rolling cover is smaller than that of the connecting cover. According to the chair, the idler wheel mechanisms are arranged on the front legs, people can lift the chair back slightly to make the chair move in a rolling mode by means of the idler wheel mechanisms when the chair needs to be pulled, a non-spherical wheel is formed by means of the semispherical connecting cover and the semispherical rolling cover to guarantee that the position does not change and the chair does not slide or swing, and then using safety and comfort are improved.