6results about How to "Decrease pitch" patented technology

The invention discloses a wave energy integration device based on multi-resonance motion control, and belongs to the technical field of offshore power generation, the wave energy integration device comprises a semi-submersible platform, the semi-submersible platform comprises a plurality of buoys and a central stand column, each buoy is divided into an upper buoy and a lower buoy, the bottom of each buoy is provided with a base, and the central stand column is arranged on the base. A floating fan is arranged on the central stand column, the buoys and the central stand column are connected through a truss, a water tank is arranged in the lower buoy, a water pump is arranged at the bottom of the water tank, a guide rail is vertically arranged in the water tank, and a heaving wave energy device is arranged on the guide rail through a transmission device. By the adoption of the structure, complementary power generation of wind energy and wave energy can be achieved. Triple resonance of the liquid in the water tank, the built-in heaving wave energy device and the balancing weight is achieved, the wave energy power generation efficiency can be improved through multi-resonance motion control, meanwhile, heaving motion of the platform is reduced, and therefore the power generation stability of a draught fan and the safety of an integrated system are improved.

The invention discloses a marine empennage, which relates to the technical field of ships, and comprises a ship shell of a wave-shaped flat bottom structure, and the upper end of the ship shell is fixedly connected with a deck used for covering the space in a ship and horizontally dividing the space into layers; the side, close to a deck, of the hull is fixedly connected with a cabin used for storing materials and allowing sailors to work and live, the outer wall of the side, away from the cabin, of the hull is fixedly connected with an empennage plate body used for keeping course stability and providing rotation or trim adjusting capacity, and dynamic wingspan expansion mechanisms are arranged on the two sides of the upper end of the empennage plate body. An arc wing guide swing mechanism is arranged at the center of the upper end of the empennage plate body, a trapping screen wing mechanism is arranged on one side of the tail end of the empennage plate body, plate wings and an electric telescopic rod are matched with each other, and the stress area of the empennage can be increased by improving the sailing performance and expanding the wingspan; therefore, larger lift force is generated under the condition of the same wind speed or water flow.

This utility model relates to the technical field of synthetic fiber production equipment, specifically disclosing a three-component composite spinning box component, including a main box. The main box has a steam inlet and a condensate return port on its outer side wall. A first auxiliary box is vertically stacked above the main box and partially overlaps with the main box in the horizontal direction. The outer side wall of the first auxiliary box has a steam inlet and a condensate return port. The vertical stacking layout optimizes space utilization, significantly reduces equipment width and floor space, and lowers factory costs. The horizontal consistency design of the steam and condensate pipelines reduces the distance between positions and the height of the windless zone, improving thermal energy utilization efficiency. The detachable aluminum alloy bracket simplifies maintenance procedures and extends equipment life. The overall structure is compact and rationally laid out, suitable for high-precision three-component composite spinning production needs, and combines high efficiency, economy, and ease of maintenance.

This utility model provides a quick clamping assembly for steel bar tensile test specimens, belonging to the technical field of steel bar performance testing and fixing. The assembly includes a movable clamping plate and an upper clamping mechanism. The movable clamping plate has a through hole in its center for inserting and fixing the steel bar. A threaded sleeve is fixedly installed on the outside of the through hole, and multiple sets of movable locking teeth are provided on its inner side. The clamping mechanism includes an adjusting part, one side of which is movably connected to a threaded knob, and the other side passes through the through hole and guides the movable locking teeth. The outer surface of the threaded sleeve has a threaded structure, and its end is fixedly connected to the outer wall of the movable clamping plate. A bearing seat is provided at the outer end of the adjusting part, and the inner wall of the threaded knob is movably connected to the bearing seat at the end of the adjusting part via a bearing. This utility model solves the problems of long operation time, poor adaptability to steel bar size, and low clamping efficiency in steel bar fixing and clamping.

The invention discloses a vehicle braking method and a related device, and if the vehicle speed of a vehicle is smaller than a preset vehicle speed threshold value, the vehicle is controlled to enter a comfortable braking mode. In the comfortable braking mode, deceleration of the vehicle is acquired, and an upper limit value of a wheel braking force is determined based on the deceleration. A rear wheel braking force setting value and a front wheel braking force setting value are determined according to the wheel braking force upper limit value, and rear wheels of the vehicle are braked based on the rear wheel braking force setting value, and front wheels of the vehicle are braked based on the front wheel braking force setting value. Therefore, after the vehicle enters the comfortable braking mode, the front wheel braking force or the rear wheel braking force is distributed according to the upper limit value of the wheel braking force, so that the braking force of the vehicle is distributed to the front wheels or the rear wheels as much as possible, vehicle pitching caused by braking is reduced, comfortable braking is achieved, and meanwhile the braking force of the vehicle cannot be reduced; the problem that the driving safety is low due to the fact that the braking force is reduced without considering the braking intention of a driver is solved.

The utility model relates to the technical field of vehicles, and particularly discloses a polar vehicle which comprises a chassis and two crawler walking mechanisms which are arranged on the two sides of the chassis respectively in the first direction. The crawler walking mechanism comprises a driving wheel, an inducing wheel, a crawler belt, two shock absorbers, a plurality of loading wheels and a plurality of torsion rod spring type independent suspensions, the driving wheel and the inducing wheel are arranged on the chassis at intervals in the second direction, and the loading wheels are arranged on the chassis through the torsion rod spring type independent suspensions in a one-to-one correspondence mode and located between the driving wheel and the inducing wheel; one end of the shock absorber is hinged to the chassis, the other end of the shock absorber is hinged to the loading wheels close to the driving wheel or the inducer, the shock absorber is arranged in the third direction, and the crawler belt is arranged around the driving wheel, the inducer and the loading wheels. When the polar vehicle runs on a rugged road surface, the torsion bar spring type independent suspension and the shock absorber work cooperatively, then vibration energy in the running process of the vehicle can be attenuated, and pitching of the polar vehicle is reduced.