3results about How to "Reduce ground pressure" patented technology

The utility model discloses a bridge and culvert height-limiting protective frame structure suitable for earth roads and sandstone roads, which relates to the technical field of bridge and culvert height-limiting protective frames and comprises a pair of seamless steel tube stand columns and a height-limiting cross beam positioned at the upper ends of the seamless steel tube stand columns. The upper ends of the seamless steel pipe stand columns are connected with the height limiting cross beam through flanges, the lower ends of the seamless steel pipe stand columns are connected with foundations through flanges, and a ground beam is arranged between the foundations. In work points such as a soil road and a sand stone road, the ground beam can enlarge the foundation bottom area, reduce the foundation pressure of unit area and prevent overlarge local settlement, the ground beam is of a reinforced concrete structure, the clear height from the height limiting cross beam to the road surface can be effectively controlled, the risk that bridges and culverts are collided by vehicles is avoided, and safety is improved.

This invention relates to a range-extended, all-electric, lightweight lotus root harvesting equipment. The technical solution is as follows: a buoyancy lifting chassis is composed of an electric drive walking module, a frame assembly, a buoyancy box, and a four-point linkage lifting mechanism; a low-pressure, high-flow-rate oscillating jet module, consisting of a jet module and a submersible pump suction module, is mounted on the buoyancy box to provide jet power for the entire machine; the diesel engine of the power generation module drives a generator to output three-phase AC power, which is then converted into DC power by a rectifier to charge the battery module; the battery module's power is converted by an inverter to power multiple submersible pumps, an underwater motor, a lifting platform, and a through-type stepper motor. The beneficial effects are: firstly, the oscillating floating jet mechanism improves harvesting efficiency; secondly, the diesel engine generates electricity to achieve energy storage and range extension, while the underwater motor's high-proportion reducer drives the rubber tracks; simultaneously, the electric drive enables multiple submersible pumps to work together, leveraging their high efficiency and head.

The utility model discloses a kind of yard retaining wall structures. The yard retaining wall structure includes multiple longitudinal extension ground, and ground is provided with the wall body with cavity between ground, and the outlet end of ground is provided with the cantilever retaining wall and the upwardly inclined retaining wall of transverse extension;The ground and the wall body with cavity form unloading platform;The cantilever retaining wall extends upwards relative to ground top, and the upwardly inclined retaining wall extends downwards relative to ground bottom.The retaining wall structure of the utility model reduces initiative pressure, and reduces foundation bearing capacity, with simple structure, construction is easy, and the characteristics such as low cost.