56results about How to "Withstand shock" patented technology

A compact, lightweight, cost effective, self-contained standby electronic navigation system with high signal-to-noise ratio and good dynamic stability is provided. The system includes a first sensor module for providing a plurality of rotational rate signals, a second sensor module for providing a plurality of compensation signals, and a microcontroller module for processing the rotational rate signals and the compensation signals and sending the signals to a display for displaying attitude information, directional information, and turn coordinate information on a single screen simultaneously. In one embodiment, the first sensor module includes a plurality of rotational sensors made of piezoelectric elements. The piezoelectric elements are made from a single sheet of piezoelectric material so that the elements possess uniform characteristics, and are arranged to reduce systematic drift and random noise normally present in a rotational rate sensor. The sensors can be configured on a single multi-sensor chip.

A filter composed of a filter medium (10) formed from a corrugated filter layer (11) and a flat filter sheet (12) which are interconnected by embossing points (15). This eliminates the need for an additional joining agent. Production of the filter is simplified because no additional materials are required to be supplied or cured.

The invention discloses a platform moon pool damping device which comprises a shock absorption cabin and a shake absorption cabin which are arranged on the transverse inner walls at the two ends of a moon pool and separated through a watertight separation board. Multiple rows of damping blocks distributed in a staggered manner are transversely arranged on the outer wall of the shock absorption cabin and the outer wall of the lower portion of the shake absorption cabin respectively. Multiple wave stop columns are arranged on the outer wall of the lower portion of the shake absorption cabin. Three separation boards are arranged in the shake absorption cabin from top to bottom. Multiple rows of vertical wave elimination blocks horizontally distributed in a staggered manner are transversely arranged on the upper sides and the lower sides of the separation boards and the inner wall of the shake absorption cabin bottom. The separation boards are provided with vertically-corresponding wedge blocks towards the outer end of the platform moon pool. Multiple rectangular openings are formed in the shock absorption cabin outer wall and a vertical wall board of the shock absorption cabin respectively. Multiple rows of horizontal wave elimination blocks vertically distributed in a staggered manner are transversely arranged on the inner walls of the two longitudinal ends and a vertical wall board of the moon pool. The shock absorption cabin and the shake absorption cabin can guarantee that a platform works safely and stably under different working conditions. The wave stop columns arranged on the outer wall of the lower portion of the shake absorption cabin can effectively resist incoming flow impact, the kinetic energy of waves is weakened, incoming flow is inducted to move towards the bottom of the moon pool, and formed vortexes in the moon pool are reduced.

The invention discloses a novel assembly type landscape overflow weir, and belongs to the field of overflow weirs. When the novel assembly type landscape overflow weir is used, it is ensured that theoverflow weir has the certain overflow capacity. When the novel assembly type landscape overflow weir is designed, the enough orifice size shape and high flow coefficient are achieved, so that the novel assembly type landscape overflow weir has the enough overflow capacity, the good orifice shape is achieved during designing, water can smoothly flow through the weir, harmful negative pressure, vibration, cavitation erosion and the like are not generated, it is ensured that local scouring damaging the safety of a weir body is avoided at an underwater bed, the position where the overflow weir section is located in the pivot should make the downstream water flowing state be smooth, reflection and scour flow is avoided, and normal operation of other buildings in the pivot is not affected and is in the working process.

The invention discloses a method for winding and forming a rough yarn after a bobbiner is full of yarn, the method comprises the steps: calculating whether the length of a residual rough yarn accords with a preset value, controlling the bobbiner to spinning at a reduced speed; calculating whether the length of a yarn spun at a low speed accords with a preset value; the method also comprises: a flier motor, a drafter motor and a bobbin rotating body motor rotate at a low speed, a lower keel motor rotates at a high speed and the yarn is distributed at a thread pitch; if the yarn reaches a full-yarn forming upper part of the bobbin, then the flier motor stops, the drafter motor and the bobbin rotating body motor stop, the lower keel motor rotates at a high speed; if the yarn reaches the full-yarn forming top end of the bobbin, then the lower keel motor stops, keeps the position of the lower keel, the flier motor and the drafter motor and the bobbin rotating body motor rotate at a low speed, the yarn is winded on the full-yarn forming top end of the bobbin, all motors stop; the bobbin rotating body motor rotates reversely, the lower keel motor rotates and moves upward, breaks the yarn, completes the winding and forming of rough yarn after the bobbiner is full of yarn. According to the invention, the effect of rough yarn winding and forming after the bobbiner is full of yarn is ideal and free from falling.

The invention provides a method of manufacturing portunid crab bait. The portunid crab bait is composed of the following raw materials, by weight: 3 to 10% of squid paste, 3 to 10% of seaweed powder, , 1 to 5% of soy lecithin, 1 to 5% of fish oil , 3 to 10% of fish meal, 10 ~ 15% of wheat middling, 30 ~ 50% of soybean meal, 10 ~ 15% of high gluten flour, 0.05 to 0.15% of sodium alginate, 0.005 to 0.015% of amino acids, 0.005-0.015% of attractant small peptides, 1 ~ 5%of monocalcium phosphate, 0.005 to 0.015% of dextran, 0.005 to 0.015% of trimethylamine oxide, 0.005 to 0.015% of sulfobetaine, and 0.5 to 1% of potassium sorbate. According to the invention, raw materials such as the squid paste are employed for preparing compound bait for portunid crabs which are small in yield in Zhoushan but have a high commercial value; and the bait is easy to use and has natural attractant effect, ensuring adequate and stable bait supply for crab catching industry.

The invention relates to a method for flood control and reinforcement and dam protection. The method comprises the main operation steps of (1) paving weaved cloth on the entire dam; (2) paving a net on the weaved cloth to protect the weaved cloth; (3) placing large frame type steel head frames or small frame type steel head frames or stepped steel head frames on the top of the entire dam, tightly arranging the large frame type steel head frames on the two sides of the entire dam one by one in a clinging manner to clamp the dam, and connecting the steel head frames into an entirety; and (4) firmly fixing the steel head frames. According to the method for flood control and reinforcement and dam protection disclosed by the invention, fastness, efficiency, safety and reliability are achieved; the safety of the dam is ensured; flood impact can be stopped by the dam after the dam is reinforced.