41results about How to "Improve vibration and shock resistance" patented technology

The invention provides a waterproof shock-absorption road surface structure and a construction method thereof. The structure of the road surface comprises a surface layer, a base layer, a drainage underlayer and a road bed from top to bottom; a waterproof shock-absorption functional layer is arranged between the surface layer and the base layer; the waterproof layer, the base layer and the drainage underlayer are separated naturally; and a water-permeable filter layer is arranged between the drainage underlayer and the road bed. The construction method is realized by arranging the road bed, the water-permeable filter layer, the drainage underlayer, the waterproof layer, the base layer, the waterproof shock-absorption functional layer and the surface layer from bottom to top. The road surface structure can effectively prevent the damage of the road surface and the road bed by the water on road surface and the underground water; meanwhile, the road surface structure has good shock absorption function and remarkably prolongs the actual service life of the road.

The invention relates to a spot welding process for a lead wire of a photomultiplier tube, which is particularly suitable for the spot welding process of a photomultiplier tube with high requirements for anti-vibration and impact capability. The lead wire of the photomultiplier tube is in parallel contact with the parts to be welded, and the contact point is connected by spot welding. There are at least two solder points, and then a layer of soft nickel sheet is wrapped outside the contact point. The welded parts are spot welded, or for the linear parts to be welded, the two ends of the soft nickel sheet are lapped and spot welded at the lap joint. The invention significantly strengthens the firmness of spot welding, improves the overall vibration and shock resistance of the device on the basis of effectively ensuring no increase in dark current, and broadens the application range of the product.

The invention discloses a low-cost miniature projection system based on LEDs and lenses and aims to solve the problems that an existing projection system is low in light energy utilization rate, low in electro-optical conversion efficiency, complex in structure, many in components, large in size, high in cost, difficult in radiating, and the like. The low-cost miniature projection system comprises a light source, a shaping lens, a digital micro-mirror device, a projection lens and an absorption body and is characterized in that the system does not comprise a color wheel, a dichroscope and a light guide tube, and the three-color LEDs replace the role of the color wheel of a traditional projection system in a lighting system. The low-cost miniature projection system has the advantages that the optical structure of the projection system is simplified, the problems of color wheel optical loss, excessively high system temperature and the like of the traditional system are solved, optical energy utilization rate is increased, radiating difficulty is lowered, and the evenness of effective projection area is increased.

A low-energy-consumption rotation driving apparatus for a satellite-borne microwave switch is disclosed. The low-energy-consumption rotation driving apparatus comprises first driving magnetic steels (6) and the like; a rotor spacer (5) is fixed on the upper surface of a circular disc at the bottom of a rotor shaft (4); the first driving magnetic steels (6) and second driving magnetic steels (7) are connected with the rotor spacer (5) and are mounted in a groove in the circular disc at the bottom of the rotor shaft (4); a first reed driving rod (9) is mounted in the middle of a first reed (10), and perpendicular to the first reed (10); first reed magnetic steel (8) is mounted in the first reed driving rod (9); a second reed driving rod (12) is mounted in the middle of a second reed (13), and perpendicular to the second reed (13); second reed magnetic steel (11) is mounted in the second reed driving rod (12); and a first reed group (2) or a second reed group (3) is arranged under each first driving magnetic steel (6) or each second driving magnetic steel (7) respectively. According to the low-energy-consumption rotation driving apparatus, the energy consumption of the microwave switch driving system is lowered, and the operating stability of the microwave switch is improved.

The invention discloses a storage system for a network communication recording device of a digital substation. The storage system comprises a main controller board module, a hard disk pack module and an IPMI (Intelligent Platform Management Interface) module, wherein the main controller board module is provided with an embedded processor, dual memories and an operation accelerator chip; software system modules are arranged in the dual memories; an operation system module of each software system module is used for running an guiding and loading program for the embedded processor, driving an embedded Linux operation system and introducing a Rootfs file system; a monitoring module is used for monitoring system operation, network link, chip temperature and voltage data of a module and providing the data to the outside through an IPMI specification; a storage control module is used for establishing, removing, restoring, reestablishing and monitoring a disk array of the hard disk pack module, carrying out operation management through a WEB management interface module and realizing NAS (Network Attached Storage) management and IPSAN (Internet Protocol Storage Area Network) management through a data access management module; a data tamper preventing module is used for preventing data from being illegally tampered; and the hard disk pack module is an RAID (Redundant Array of Independent Disk) 0 / 1 / 5 / 6 type disk array; and the IPMI module is used for monitoring the operation condition of the storage system and exporting monitoring data according to the IPMI specification.

The invention discloses a high-speed modular connector. A plug comprises a plug shell. At least one accommodating cavity and a plurality of through holes are arranged in the plug shell. A signal pin module is arranged in each accommodating cavity. A socket comprises a socket shell. The number of accommodating grooves therein matching the number of accommodating cavities is arranged in the socket shell. A boss of the socket shell is provided with jacks therein communicating with the accommodating grooves. Each accommodating groove is provided with a signal jack module therein connected with the corresponding signal pin module in a plug-in manner. After the plug and the socket are assembled together, radio frequency connecting members are mounted in the through holes and the jacks communicated with each other. Each signal pin module includes a base and a pin assembly having a plurality of pin blocks. Each base is provided with a plurality of rows of mounting holes. Each pin block is plugged into one row of mounting holes. Each signal jack module comprises a base body having a plurality of plug-in holes and a jack assembly plugged into the plug-in holes. Each jack assembly comprises a plurality of rows of signal jacks. Each row of signal jacks is connected with one pin block in a plug-in manner, and each row of signal jacks is fixedly connected by one fixing block.

The invention relates to a quartz resonator, and discloses a quartz resonator comprising a low-phase-noise shock resistance quartz crystal wafer. The quartz resonator comprises the quartz crystal wafer (1), and a main electrode (6) is connected to the quartz crystal wafer (1); a first secondary electrode (51) and a first conductive electrode (71) are connected to the top face (11) of the quartz crystal wafer (1), and a second secondary electrode (52) and a second conductive electrode (72) are connected to the bottom face (12) of the quartz crystal wafer (1); the projection of the first secondary electrode (51) on the bottom face (12) is in point symmetry with the projection of the second secondary electrode (52) on the bottom face (12), and the projection of the first conductive electrode (71) on the bottom face (12) is in point symmetry with the projection of the second conductive electrode (72) on the bottom face (12). The quartz resonator is simple in structure and convenient to use, and improves structural stability and external force resistance capacity due to the fact that the quartz crystal wafer with the small diameter is adopted.

The invention relates to a networking method for a cable network, in particular to a shell rigid protection and contact pin switching printed board networking method for a CSB bus cable network, and belongs to the technical field of cable networking. Printed board through hole welding is conducted in the mode that a contact pin is bent by 90 degrees, the contact pin replaces a stranded conductor and is bent and welded, and conductor welding reliability is improved. Rigid protection to an inner welding point is achieved. Two half metal shell bodies are buckled together and then are welded, external force is effectively prevented from being transferred to the inner welding point, and the possibility that the welding point is cracked under the action of the external force is avoided. The shell rigid protection and contact pin switching printed board networking method has the good anti-vibration and anti-impact performance. Due to the facts that rigid shell body buckling and welding are conducted, and the shell bodies are filled with silica gel, the whole anti-vibration and anti-impact performance of products is greatly improved, the spectrum impact can reach 1600g, and the random vibration total root-mean-square acceleration magnitude can reach 35.4g.

The invention relates to a getter string and the usage of a safe high pumping speed getter pump. The getter string is formed by stringing a plurality of getter pieces on a supporting pole. The getter pump is formed by arraying a plurality of the getter strings evenly on the shell body of the getter pump, an opening is arranged on the shell body as a getter pump opening, and a firing heating device is arranged on the outside of the shell body. The getter pump adopts an external firing heating method to activate the getter in the pump body. The usage and the maintenance are convenient and safe. The internal structure of the pump body is rationally designed, is helpful for evenly heating the getter, can facilitate the gas to diffuse, and can increase the pumping speed.

The invention discloses a transmission mechanism for a microwave switch. Driving plates are J type spring plates and include long sides and short sides; the long sides and the short sides are connected based on arc structures; lug plates with through holes are arranged on the short sides and the short sides are connected to a cover plate by support bolts; and the long sides are arranged between an armature group and driving rods. A permanent magnet, a magnetic conductive plate, and iron cores of a left coil group and a right coil group form an enclosed magnetic circuit for generate magnetic forces; and the generated magnetic forces are applied to the armature group. An armature has a V-shaped structure; the armature and a carrying and touch body are fixedly connected; protruding lugs in contact with the driving plates are arranged at the lower sides of the two ends of the armature, so that the strokes of the driving rod can be enlarged. According to the invention, the strokes of the driving rods can be effectively enlarged; and on the premise that the effective stroke is realized, the appearance dimension of the product and the product complexity are reduced.