3results about How to "Avoid flick" patented technology

The invention discloses a Fluent-based numerical simulation and experimental design method for shaking of liquid in a tank of a tank truck, and belongs to the technical field of numerical simulation of fluid dynamics (CFD). The method includes the steps that the hole opening position of the wave-proof plate serves as an independent variable, multiple hole opening position schemes are designed, liquid shaking related indexes are determined to serve as dependent variables, a geometric model is established according to the actual structure of a tank truck tank body, a fluid mechanics model and boundary conditions are set, a solver is configured, output parameters and numerical simulation initial values are set, and an experiment is executed. The liquid shaking process of a certain swash plate trepanning scheme is simulated, acting force data, namely shaking index data, between liquid shaking and the inner wall of the tank body is recorded, the advantages and disadvantages of each trepanning position scheme are evaluated based on the shaking index data, and the optimal scheme is determined. According to the method, a real object experiment is replaced by CFD numerical simulation, parameter setting is carried out, the experiment cost and the experiment risk are remarkably reduced, the experiment efficiency is improved, and data support can be provided for industry design.

The application discloses a caster device and a foldable handcart frame. The caster device comprises a frame body and a pair of caster mechanisms. The first caster mechanism comprises a wheel frame and a caster. The caster is rotatably connected to the wheel frame and has a horizontal rotation axis. The wheel frame is rotatably connected to the frame body and has a vertical rotation axis. The vertical rotation axis is spaced from the horizontal rotation axis. The caster mechanism is provided with a limiting mechanism. The limiting mechanism limits the rotation of the wheel frame around the vertical rotation axis between two limiting positions. The rotation range defined by the two limiting positions is 180 degrees. The first caster mechanism at the two limiting positions is parallel to the advancing direction. The limiting mechanisms of the two first caster mechanisms limit the rotation range of the wheel frame to be symmetrical to the axis of the advancing direction. The application has the following advantages: not only can it advance and retreat, but also has controllability to adapt to steering; the packaging size is reduced, the packaging cost is reduced, and the transportation cost is reduced.

This invention relates to the field of interventional medical devices and precision fluid control technology, specifically to an auxiliary device for catheter and guidewire processing in an interventional catheterization lab. It comprises a mechanical actuator, a data acquisition module, a pneumatic adjustment module, and a controller. The system, through the cooperation of a fluid drive unit and a flexible variable boundary unit, utilizes a spiral flow channel to transform the fluid into a spiral jet with axial thrust. Its core principle is to use a fluid medium as the sole power medium, replacing traditional solid-mechanical contact. This invention completely eliminates the physical damage to the guidewire's micron-level hydrophilic coating caused by roller clamping, effectively ensuring the integrity and lubrication performance of the interventional device.