31results about How to "Guaranteed anti-vibration performance" patented technology

Provided is an active optical cable connector assembly. The active optical cable connector assembly comprises a tail sleeve, a connector socket shell, a plug, a left half tail back-up ring and a right half tail back-up ring positioned in the tail sleeve after merging, and an upper layer optical module and a lower layer optical module electrically connected with a high-speed electric connector via flexible printed circuit boards, the left half tail back-up ring and the right half tail back-up ring are both provided with slots capable of clamping the flexible printed circuit boards, the connector socket shell is fixedly provided with a seat core provided with two optical module upper slots and two optical module lower slots in a pasted manner, the tail sleeve is connected with the connector shell, the upper layer optical module and the lower layer optical module are both positioned in the connector socket shell, and the connector socket shell and the plug are connected by employing a four-channel LC plug-pull type structure. The active optical cable connector assembly is advantageous in that the integration is realized, the size is small, the weight is low, anti-electromagnetic interference is provided, the reliability is high, the installation and the debugging are simple and convenient, the problems of fiber coiling of conventional pigtail optical modules and easy break of the optical fibers can be thoroughly solved, the spatial size of a manned space system can be greatly reduced, and the active optical cable connector assembly is very applicable to data transmission application in the manned space systems.

The invention discloses a reinforcing connecting device based on a PXI backboard bridge to achieve a purpose of raising reliability of a PXI backboard. The reinforcing connecting device comprises the PXI backboard and PCI-PCI bridge plates. Each PCI-PCI bridge plate carries out bridge connection between two adjacent bridge sections on the PXI backboard in a parallel lamination connection mode. Four channels C1, C2, C3, and C4 are continuously selected from the two adjacent bridge sections. A PXI connector P1 and a PXI connector P2 are installed at slots of C1 and C4. A four-core pin at a backside of the PXI backboard is connected with a four-core socket to form a four-core connector. A six-core pin is connected with a six-core socket to form a six-core connector. A female joint J1 at a right side of the PCI-PCI bridge plate is cooperated with P1, and J2 is cooperated with P2. A through hole of a positioning hole of the PCI-PCI bridge plate is inserted with studs. Through two nuts on each stud, the PCI-PCI bridge plate is fixed at the back side of the PXI backboard.

The invention discloses a MEMS thermal flow sensor and a manufacturing method thereof, wherein the MEMS thermal flow sensor comprises a substrate, a first group of thermistor bodies, a heating resistor body, a second group of thermistor bodies, and an ambient temperature measuring resistor Body, lead wire, passivation protection layer and electrode pad. The manufacturing method of the MEMS thermal flow sensor selects a material with insulation, high thermal resistance, and vibration resistance as the substrate, and sputters a metal layer or a semiconductor layer on the substrate, and forms a second layer by etching on the metal layer or semiconductor layer. A set of thermistor body, heating resistor body, the second group of thermistor body, ambient temperature measuring resistor body, lead wire, and passivation protective layer formed by silicon dioxide or polyimide at the same time, and electroplated at the end of the lead wire Gold or aluminum forms the electrode pad portion. The invention simplifies the processing technology, reduces the manufacturing cost, manufactures the spare thermistor body and the passivation protection layer, and improves the reliability of the sensor.

The name of the present invention is a soft pack battery module. It belongs to the technical field of soft pack battery PACK. It mainly solves the problems that the existing soft-pack power battery packs are difficult to fix and realize series-parallel connection. Its main features are: there are plastic left and right plastic fixing frames on both sides of the soft-packed battery, and two insulated aluminum sheets are arranged on the outside of the plastic right fixing frame; the plastic left fixing frame and the plastic right fixing There are wiring grooves on both sides of the upper frame; the plastic left fixing frame, the soft-packed battery cell, the plastic right fixing frame and the aluminum sheet are interlocked to form a soft-packed battery module unit; the soft-packed battery module unit is stacked into a laminated body , the composite body is fixed into a whole by the plastic side plate 1 and the plastic side plate 2 on both sides; a metal holder and a top cover are arranged on the pouch battery module unit. The invention can not only ensure the reliability and vibration resistance of the battery fastening, but also ensure the effective insulation between the batteries, has the advantages of small size, light weight and convenient maintenance, and is mainly used for soft pack power battery packs.

The invention discloses a reinforcing connecting device based on a PXI backboard bridge to achieve a purpose of raising reliability of a PXI backboard. The reinforcing connecting device comprises the PXI backboard and PCI-PCI bridge plates. Each PCI-PCI bridge plate carries out bridge connection between two adjacent bridge sections on the PXI backboard in a parallel lamination connection mode. Four channels C1, C2, C3, and C4 are continuously selected from the two adjacent bridge sections. A PXI connector P1 and a PXI connector P2 are installed at slots of C1 and C4. A four-core pin at a backside of the PXI backboard is connected with a four-core socket to form a four-core connector. A six-core pin is connected with a six-core socket to form a six-core connector. A female joint J1 at a right side of the PCI-PCI bridge plate is cooperated with P1, and J2 is cooperated with P2. A through hole of a positioning hole of the PCI-PCI bridge plate is inserted with studs. Through two nuts on each stud, the PCI-PCI bridge plate is fixed at the back side of the PXI backboard.

The invention relates to a NdFeB permanent magnet material suitable for a magnetic suspension system and a preparation method thereof. This material is prepared by adoping of 0.5%-5.0%high entropy alloy in the main alloy of RExFe100-x-yBy, so that the alloy of the invention can realize demagnetization coupling through the high entropy alloy. Moreover, since the high entropy alloy doped in the material has a single solid solution nanostructure, the invention can also restrain the alloy grain growth in the sintering process through the high entropy alloy, refine the grain, make the alloy component structure more uniform and uniform, and effectively improve the comprehensive magnetic properties of the NdFeB permanent magnet material. The magnetic performance of the NdFeB permanent magnet material is improved, and further the strength and toughness, the vibration resistance and the corrosion resistance of the material are improved, so that the material is suitable for application environments such as magnetic levitation and the like, which have more restrictions on the working conditions.

The invention relates to the technical field of related structures of steel-cored aluminum stranded wires, and discloses an anti-vibration steel-cored aluminum stranded wire, which comprises a steel-cored aluminum stranded wire body and a flexible buffer layer. The steel-cored aluminum stranded wire body comprises a steel core wire, an inner aluminum stranded wire and an outer aluminum stranded wire. The annular wire of the steel core wire is provided with inner spiral embedding path grooves matched with the inner aluminum stranded wire, the inner aluminum stranded wire is connected with the steel core wire in a spiral embedded mode through the corresponding inner spiral embedded path grooves, and the flexible buffer layer wraps the inner aluminum stranded wire in an annular mode. According to the anti-vibration steel-cored aluminum stranded wire, different from a traditional mode in which a steel wire is directly and spirally wound by an aluminum stranded wire, the inner aluminum stranded wire is spirally wound in the inner spiral embedding path groove, so that the inner aluminum stranded wire is embedded on the steel core wire, the outer aluminum stranded wire and the flexible buffer layer are flexibly and spirally wound, the connection integrity between structures is improved, and therefore, the vibration resistance of the steel-cored aluminum stranded wire structure is effectively ensured.

The invention relates to a high-rigidity lifting device for ultra-precision machining, which has a base and a lifting panel. The base is provided with a lower wedge-shaped block with an upward inclined surface, and an upper wedge-shaped block with an inclined surface and the lower wedge-shaped block is fixed on the bottom surface of the lifting panel. The first friction guide rail is fixed on the slope of the upper wedge block, the slope of the lower wedge block is slidingly matched with the first friction guide rail, the second friction guide rail is fixed on the base, the bottom surface of the lower wedge block is slidingly fitted with the second friction guide rail, and the bottom surface of the lower wedge block is slidingly fitted with the second friction guide rail. A trapezoidal lead screw is provided for rotation in the wedge-shaped block, and a trapezoidal nut that is rotatably matched with the trapezoidal lead screw is fixedly connected on the lower wedge-shaped block. The invention realizes the adjustment of the height of the device through the lifting effect of the wedge-shaped motion generated by the translation of the lower wedge-shaped block on the upper wedge-shaped block. Since the sliding friction is used to replace the rolling friction motion used in the traditional lifting device, the overall rigidity and accuracy of the device are improved. , to ensure the guiding accuracy during the lifting process and the anti-vibration effect during the processing.

The invention discloses a vibration reliability testing method. By simulating the actual vibration state, the method obtains the mode shape, resonance frequency, stress-strain and deformation amplitude parameters of the designed product under corresponding vibration conditions. Analysis of characteristics provides a reliable basis for product structure improvement and performance improvement. The invention can simulate and verify the vibration reliability of the product at the design stage, which greatly facilitates the design of new anti-vibration structures and the introduction of new anti-vibration materials; improves the quality of product solutions at the design end, and solves the problem of repeated vibration in projects. However, there are problems of long period and high cost in sex test verification.