40results about How to "Easy to check and replace" patented technology

The invention provides a modularized box type charging and battery swapping station used for replacing a battery of an electric car. The charging and battery swapping station comprises a central monitoring room 1, a battery swapping robot 2 and a charging and battery swapping box 3, wherein the central monitoring room 1 is used for monitoring the charging and battery swapping station, the battery swapping robot 2 is located between the charging and battery swapping circuit 3 and the electric cars provided with batteries to be replaced, and the battery between the electric cars provided with batteries to be replaced can be replaced; and a battery storage rack 301, a battery charger cabinet 302, a monitoring cabinet 303, a distribution cabinet 304, a temperature control system 305 and an access path 306 are arranged in the charging and battery swapping box 3. The modularized box type charging and battery swapping station, provided by the invention, has the advantages of strong adaptability, flexible configuration and expansibility, small floor space, high working efficiency, short construction period, benefit for large-scale popularization and construction, high automation degree, smaller device maintenance amount, simple structure and low fault rate.

The invention discloses a KU-band high-frequency head, which comprises a circuit board protection case, an aluminum limiting plate, a fixing screw hole, an output head, a connecting pipe, an isolation protection case, and a sliding buckle. The circuit board protection case is rectangular structure, the aluminum limiting plate is fixedly connected to the left side of the circuit protection case, multiple fixed screw holes are fixed on the surface of the aluminum limiting plate at equal angles, and the four output heads are connected to the surface of the aluminum limiting plate with equiangular bolts, The present invention adopts the advanced ultra-low noise technology at the present stage, uses dual local oscillators, balances the frequency mixing, amplifies the intermediate frequency, and optimizes the integrated circuit. Therefore, this kind of tuner has obvious power gain and low noise , The phase noise index is excellent and the reliability is high. At the same time, the invention adopts a split structure, and the sliding buckle above the connecting pipe can be slid, disassembled and installed. When the internal components are damaged, it is convenient to check and replace, and the service life of the tuner is increased.

The invention provides a three-plunger reciprocating pump. The three-plunger reciprocating pump comprises a pump head body, a plurality of valve group modules and a stuffing box, wherein the valve group modules are arranged on the exterior of the pump head body, each valve group module is arranged and installed at the end part of the pump head body, a plurality of valve bodies are arranged in the valve group modules, and the stuffing box is connected with the other end of the pump head body. The pump head body is provided with a liquid inlet main channel and a plurality of liquid inlet subchannels which communicate with the liquid inlet main channel. A valve group liquid inlet is formed in each valve group module. The liquid inlet subchannels communicate with the valve group liquid inlets one by one correspondingly. One end of the pump head body is further provided with a liquid discharging main channel and liquid discharge subchannels which communicate with the liquid discharging main channel. A valve group liquid discharging opening is formed in each valve group module. The liquid discharging subchannels communicate with the valve group liquid discharging openings one by one correspondingly. According to the three-plunger reciprocating pump, a runner structure of the pump head body is simplified, the machining precision is improved, and the service life of the pump head body is prolonged; and the structure of the pump is more reasonable and extremely convenient to install, use and maintain.

A double-slope bridge telescopic device, the vehicle load is transmitted to the beam body through the cooperation between the slopes on both sides of the bottom of the double-slope cover plate and the slope at the top angle of the beam end. During the displacement process, the top surface of the bridge telescopic device is basically flush with the bridge deck, and is waterproofed through the water stop belt or the telescopic panel. The telescopic panel is formed by solidifying rubber strips and pearl cotton strips along the bridge direction. The bridgewise width of adjacent pearl cotton strips is less than two-thirds of the bridgewise width of the rubber strips. When the expansion panel is used in the double-slope bridge expansion device, the two sides of the bottom surface of the expansion panel are respectively sealed and fixed with the top surfaces of the beams on both sides of the expansion joint, and the middle part of the expansion panel is sealed and fixed with the cover plate along the length direction of the double-slope cover plate. It is a bridge telescopic device with simple structure, low cost, shallow burial without burial, good waterproof performance, easy expansion and contraction, easy installation, easy maintenance, and comfortable driving.

The invention relates to the technical field of rhenium recycling and use, in particular to a method for preparing metallic rhenium. According to the method provided by the invention, the high-purity metallic rhenium is prepared by taking ammonium perrhenate as a raw material through two steps; in the first step, high-purity ultrafine ammonium perrhenate is first prepared; in the second step, the ammonium perrhenate is reduced into high-purity metallic rhenium powder through a reducing method; ultrasonic auxiliary crystallization and vacuum drying are adopted; in the process of ultrasonic crystallization, an ultrasonic crystallizer with an opened kettle body and a detachable ultrasonic transducer are adopted. Due to the adoption of an ultrasonic crystallization-hydrogen reduction combined process, the ammonium perrhenate serving as the raw material is used for preparing the high-purity metallic rhenium, so that the flow is simplified, the reaction time is shortened, the energy is saved, and the consumption is reduced; the raw material is high in adaptability, so that the requirement on the raw material is lowered; ultrasonic waves directly act on the ammonium perrhenate material, and the utilization rate is high; the detachable structure is easy to check and replace, and favorable for industrialization.

The invention discloses a distributed strain collector for long-term safety monitoring of a ship structure. The distributed strain collector comprises a circuit board hardware, a shell, a power supply communication socket and a sensor socket, wherein the power supply communication socket and the sensor socket are mounted on two side walls of the shell; the circuit board hardware is fixed at the bottom of the shell; each power supply and each signal wire on the circuit board hardware are connected with the power supply communication socket and the sensor socket through wires; the circuit board hardware consists of a signal modulation and collection module, a microcontroller, a controller area network (CAN) communication module and a power supply management module; the applicable sensor is a resistance strain sensor. A plurality of distributed strain collectors disclosed by the invention are combined with a monitoring host so as to build a large distributed sensor network for long-term safety monitoring of ship structures; each strain collector can be flexibly arranged near the sensor to monitor the strain stress of the ship structure in real time and transmit the measuring data to the monitoring host in real time.