5results about How to "Reduce vibration response" patented technology

The application provides a small satellite platform structure which carries a large amount of propellant and is connected and separated in point mode, belongs to the technical field of spacecraft structure, and comprises a frame, a bottom plate, a lower cabin partition plate, a storage tank support rod, a middle layer plate, an upper cabin partition plate, a top plate and a side plate, so that the side plate surrounds the parallelly arranged bottom plate, middle layer plate and top plate into a closed box body, the bottom plate is connected to the frame, the storage tanks are arranged diagonally in the round holes on the bottom plate and the middle layer plate, and the storage tank support rods are uniformly distributed around the round holes; the middle layer plate separates the box body into an upper cabin and a lower cabin, the upper cabin partition plate is connected in the upper cabin, and the lower cabin partition plate is connected in the lower cabin. The application proposes a configuration of "point connection + storage tank sinking", meets the demand of the small satellite platform for carrying a large amount of propellant, effectively reduces the whole satellite center of mass, and improves the satellite dynamic environment; meanwhile, the bottom main load-bearing frame cooperates with a detachable adapter block, can adapt to different mechanical interfaces of launch vehicles, and realizes point connection and separation.

The utility model discloses an anti-bending screw which comprises a screw body, the inner wall of the screw body is fixedly connected with a truss mechanism, the right-angle position of the truss mechanism is fixedly connected with a slope table, a rubber pad is placed on the top of the slope table, a countersunk bolt penetrates through the top of the rubber pad, and the countersunk bolt is in threaded connection with a cross-shaped rib plate. The top of the rubber pad is fixedly connected with a truss mechanism, the truss mechanism is fixedly connected with the inner wall of the screw main body, the inner surface of the truss mechanism is fixedly connected with an anti-buckling supporting assembly, the truss mechanism comprises a vertical rod, an upper chord and a lower chord, the vertical rod is fixedly connected to the top of the rubber pad, and the upper chord is fixedly connected to one side of the vertical rod. And the other side of the upper chord member is fixedly connected with the other vertical rod. According to the utility model, local deformation and even bending damage of the screw rod under bending moment can be prevented, and external load can be prevented from being concentrated on local parts, so that the reliability when the pressure in concrete is higher is improved.

This invention relates to an air mass flow sensor for determining air mass flow rate, the air mass flow sensor having a housing (4) and sensor electronics (6), wherein the sensor electronics are at least partially disposed in a housing chamber (8) of the housing (4), wherein the housing (4) has a flow channel (14) for guiding an air mass flow (L) to be measured through the housing (4), the flow channel (14) having a measuring channel (20) and a bypass channel (22), wherein the measuring channel (20) guides a portion of the air mass flow (L) flowing into the flow channel (14) to a measuring point (24) of the sensor electronics (6), and wherein the bypass channel (22) guides a portion of the air mass flow (L) flowing into the flow channel (14) to a measuring point (24) of the sensor electronics (6) upon reaching the measuring point (24). 24) The first wall element (28) that branches out from the housing (4) at least segmentally separates the bypass channel (22) and the measuring channel (2) from each other has a wall height (H1) that is at least segmentally reduced, such that the first wall element (28) can be overflowed at least segmentally, and / or the first wall element (28) has a through hole (34) that allows flow through the first wall element (28), and the second wall element (33) that branches out from the bypass channel (22) and the inlet (16) of the flow channel (14) at least segmentally separates from each other has a wall height (H3) that is at least segmentally reduced, such that the second wall element (28) can be overflowed at least segmentally, and / or the second wall element (28) has a through hole (34) that allows flow through the second wall element (28).

This utility model relates to the technical field of floor slab steel truss structures, and discloses a floor slab steel truss structure, including a floor slab. A quick-installation assembly is fixedly connected to the top of the floor slab, and a steel truss is fixedly connected to the top of the floor slab. A support and damping assembly is fixedly connected to one side of the steel truss. The quick-installation assembly includes a fixed base fixedly connected to the top of the floor slab, and a hollow cylinder fixedly connected to one side of the fixed base. A rotating column is slidably connected inside the hollow cylinder. The support and damping assembly includes a support rod fixedly connected to one side of the steel truss, a support fixedly connected to the surface of the support rod, and a support column slidably connected to the top of the support. This floor slab steel truss structure, through the quick-installation assembly, achieves convenient installation and positioning, improves construction efficiency, reduces installation difficulty, ensures structural accuracy and stability, and reduces the workload of personnel.

The invention discloses a high-strength die-casting new energy automobile steering gear shell. The high-strength die-casting new energy automobile steering gear shell comprises a main shell, a shaft end cover, an inner shaft barrel, a damping interlayer structure, an acoustic cavity structure and a micro-ripple structure. The main shell is formed by integral die-casting, and a plurality of groups of micro-ripple structures distributed along the circumferential direction are arranged on the peripheral surface of the main shell so as to form a periodic rigidity change area; a damping interlayer structure is constructed between the inner wall of the main shell and the outer wall of the inner shaft barrel, and absorption of low-frequency vibration energy is achieved through the double-face attaching effect of an elastic interlayer material. An acoustic cavity structure is further formed on the inner side of the main shell, and a silencing grid is arranged in the cavity and used for scattering and phase interference of intermediate-frequency noise such as rack meshing. Through cooperative arrangement of the inner damping layer, the middle acoustic cavity layer and the outer micro-ripples layer, graded attenuation paths can be formed for low-frequency, medium-frequency and high-frequency vibration noise, the overall NVH performance and structural stability of the steering gear shell are remarkably improved, and the requirements of modern vehicles for driving quietness and control quality are met.