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97results about How to "Increase assembly flexibility" patented technology

Integrated variable frequency fracturing pumping device control system and control method

The invention discloses an integrated variable frequency fracturing pumping device control system and control method. The integrated variable frequency fracturing pumping device control system comprises a high voltage electric input unit, an integrated container, and a variable frequency integrated machine; the integrated container comprises a power supply and distribution unit connected with a high voltage circuit breaker, the power supply and distribution unit is connected with and provides power for a main touch screen display, a main controller, an auxiliary controller, an auxiliary touchscreen display, and the variable frequency integrated machine correspondingly, and the main controller is connected with a remote control station and a camera system correspondingly; the main controller is further connected with the fluid end and the power end of a fracturing pump and an illuminating system; the main controller is further connected with a fracturing truck; the variable frequency integrated machine comprises a detection system, a temperature control system, and a frequency converter, wherein the detection system and the temperature control system are connected with the main controller correspondingly, the frequency converter is connected with the auxiliary controller, the frequency converter is connected with a variable frequency motor, and the variable frequency converteris connected with the fracturing pump. According to the integrated variable frequency fracturing pumping device control system and control method, the whole control system is divided into two independent modules, the structure adopts an integrated modular design, the mounting space is compact, maintenance is convenient, and assembly is flexible.
Owner:BAOJI PETROLEUM MASCH CO LTD +2

Lead screw drive based multistage synchronous telescopic boom

The invention discloses a lead screw drive based multistage synchronous telescopic boom. A bearing section is connected with a guide rail slide block and a lead screw nut fixed base of a last-stage telescopic middle section; a current-stage telescopic middle section is connected to a guide rail slide block and a lead screw nut fixed base of a previous-stage telescopic middle section or a first-stage telescopic drive section; a motor of the first-stage telescopic drive section drives a large bevel gear to be engaged with a small bevel gear for transmitting rotation onto a lead screw; the lead screw drives a lead screw nut and a first-stage telescopic middle section to move; a large plane transmission gear of the first-stage telescopic middle section is engaged with a rack of the first-stagetelescopic drive section to rotate; the large plane transmission gear is engaged with a small plane transmission gear to perform reversing and speed changing; the small plane transmission gear and the large bevel gear rotate coaxially; the large bevel gear is engaged with the small bevel gear for transmitting rotation to the lead screw; and the lead screw drives a next-stage telescopic middle section or the bearing section to move. The lead screw drive based multistage synchronous telescopic boom has the advantages of being synchronous and quick in extension and retraction, good in rigidity,high in transmission efficiency, high in precision, capable of expanding at any stage, good in self-locking performance, and the like.
Owner:BEIHANG UNIV

Double-working-mode micro electro mechanical system (MEMS) optical probe

The invention discloses a double-working-mode micro electro mechanical system (MEMS) optical probe which comprises a probe tube casing with a window base and a probe main body arranged in the probe tube casing, wherein the probe main body comprises a main body base, an MEMS micromirror with a base, a first lens assembly and a second lens assembly, wherein the first lens assembly and the second lens assembly are connected with optical fibers. The MEMS micromirror electrically connected with an external driving circuit is fixed at the front end of the main body base; the first lens assembly is fixed on one side of the main body base and achieves frontward scanning or lateral frontward scanning of frontward or lateral frontward scanning light beams through crosswise deflection of the MEMS micromirror; and the second lens assembly is fixed on the other side of the main body base and achieves lateral scanning of lateral scanning light beams through crosswise deflection of the MEMS micromirror. The double-working-mode MEMS optical probe performs probe assembling through the double lens assemblies, can achieve two working modes through one MEMS micromirror, can be used for scanning imaging of cavities of multiple organs in human bodies and performing diagnosis and can be used in the field of detection and measuring in industry and the like.
Owner:无锡微文半导体科技有限公司

Axle box external subway bogie with integrated swing bolster and hoisting support device

PendingCN112693491AImproved mechanical properties of structural stiffnessReduce the number of weldsAxle-boxesBogiesBogieElectric machinery
An axle box external subway bogie with an integrated swing bolster and a hoisting support device belongs to the field of railway vehicle bogie devices and comprises a framework, the swing bolster, a wheel set device, a trapezoidal axle box device and a secondary suspension system. A cross beam and a side beam of the framework are of a box-shaped structure. The cross beam upper cover plate also serves as a side beam middle upper cover plate, a motor lifting seat upper cover plate and a gear box lifting seat upper cover plate, and the cross beam lower bottom plate also serves as a side beam middle lower bottom plate, a motor lifting seat lower bottom plate and a gear box lifting seat lower bottom plate; and trapezoidal axle box devices are arranged on the outer sides of wheels of the wheel set devices, upper cover plates in the middles of side beams are fixedly connected with hoisting supporting devices, and side bearings with grooves are fixedly connected to the tops of swing bolsters. The number of welding seams is effectively reduced, stress concentration is reduced, the efficiency of car falling and overhauling procedures is improved, and the overhauling and debugging process of height matching and leveling of the swing bolster and the car body floor end face and the platform after wheel turning is remarkably improved; and the wheel can be effectively protected, and the service life of the side bearing is long.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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