5results about How to "High dynamic stiffness" patented technology

The utility model provides a battery box and battery pack, wherein the battery box comprises a box body and a partition beam, the partition beam is arranged in the box body, the partition beam comprises a first partition plate and a second partition plate, the first partition plate and the second partition plate are oppositely arranged along the arrangement direction of two large surfaces of the partition beam, the first partition plate and the second partition plate are fixedly connected along at least one end in the plane direction of the partition beam large surface; at least one of the first partition plate and the second partition plate is further provided with a concave part. Compared with the prior art, the first partition plate and / or the second partition plate of the partition beam disclosed by the utility model are / is provided with the concave parts, so that the deformation resistance of the battery box body can be improved, and concentrated stress can be dispersed to a wider area due to the arrangement of the concave parts; resonance and deformation of the separation beam can be effectively restrained under the dynamic working conditions of vehicle running vibration, jolt and the like, and the dynamic rigidity of the separation beam is improved.

The utility model discloses a kind of new configuration flap milling equipment of large stroke dynamic upright column type suitable for, include: mainframe and workstation exchange system;Mainframe includes bed, support frame, dynamic upright column mechanism and main shaft mechanism;Main shaft mechanism is installed on bed and support frame by dynamic upright column mechanism;Workstation exchange system includes workstation pusher, workstation turnover device and workstation fixing device;Workstation fixing device includes workstation pedestal and workstation fixing frame, and the workstation fixing frame is set on the workstation pedestal;Support frame and the workstation fixing frame are connected by connecting frame and are connected with each other between the workstation fixing frame.The five-axis flap milling machining center disclosed in the application has high overall structural rigidity, thereby facilitating the enhancement of the dynamic stiffness of the main shaft mechanism, ensuring the stability of the machining, and improving the machining accuracy.

This invention discloses a lightweight structure for a laser-radio integrated communication payload for microsatellites, belonging to the field of satellite payload lightweighting technology. The invention includes a mirror body and a substrate. Multiple honeycomb holes are evenly distributed on the back of the mirror body, and triangular ribs are provided at the intersections of these holes. A support ring is fitted to the outer edge of the mirror body, and three positioning holes and nine mounting holes are evenly distributed on the outer surface of the support ring. By evenly distributing hexagonal honeycomb holes on the back of the mirror body, the weight of the mirror body is significantly reduced. By using novel lightweight materials for the mirror body, substrate, and support, the thermal stability of the primary mirror structure is improved while maintaining structural rigidity. This reduces surface distortion while significantly compressing the weight of the primary mirror structure, achieving further optimization compared to traditional lightweighting solutions. This results in the optimization of the satellite payload structure for extreme lightweighting, ultra-stable thermal performance, and high dynamic rigidity.

The present invention discloses a piezoelectric ceramic excitation device, comprising: a first piezoelectric ceramic, a first gasket and a second piezoelectric ceramic component stacked, wherein the first gasket is arranged between the first piezoelectric ceramic and the second piezoelectric ceramic components; the first piezoelectric ceramic is used to receive a first electrical signal and perform longitudinal flexural vibration under the excitation of the first electrical signal; the second piezoelectric ceramic component is used to receive a second electrical signal group and perform lateral torsional vibration under the excitation of the second electrical signal group. By adopting a piezoelectric ceramic stacking method, different piezoelectric ceramics in the piezoelectric ceramic excitation device are excited by different electrical signals, so that the piezoelectric ceramic excitation device can simultaneously perform lateral and longitudinal combined vibrations. The piezoelectric ceramic excitation device can be used for an atomic force microscope to measure non-contact interaction forces in the lateral and longitudinal directions, thereby increasing the spatial resolution of the atomic force microscope. The present invention also discloses an atomic force microscope, a surface force field detection device and a detection method.

The invention discloses a truss type space camera supporting structure, and relates to the technical field of space remote sensing, the truss type space camera supporting structure comprises a top seat and a base, and the top seat and the base are connected through a plurality of truss rods; the base is used for installing the primary mirror assembly and the three-mirror assembly, the top seat is used for installing the secondary mirror assembly and the focal plane assembly, each truss rod comprises an inner carbon fiber rod and an outer carbon fiber rod, and the inner carbon fiber rod is arranged in the outer carbon fiber rod. According to the invention, a double-layer nested carbon fiber rod mounting mode is adopted, so that the stability of the space camera is greatly improved under the conditions that the requirement on the size of the space camera is low and the space camera is not suitable for layered rod system layout.