3results about How to "Achieve continuous change" patented technology

The invention provides a continuous pressure regulation optimization method of an emergency throttle valve and the emergency throttle valve. The method comprises the following steps: S1, establishing an optimization target; s2, setting initial parameters; s3, performing opening degree simulation on the conical valve head; s4, selecting an angle value of a cone angle of the valve head, and performing opening degree simulation on the piecewise function type valve head; s5, adjusting an angle value of a cone angle of the valve head, and performing opening degree simulation of throttling ports at different displacement positions of a valve core on the piecewise function type valve head; and S6, adjusting the outlet aperture of the outlet channel to carry out openness simulation, and determining the outlet aperture value of the outlet channel. According to the invention, continuous pressure regulation and pollution resistance of the emergency throttle valve under the condition of constant flow are taken as improvement targets, the structure of the cone angle of the valve core and the valve head is improved, and a logarithmic function form is adopted, so that the drainage basin of the emergency throttle valve is streamlined, and pollution particles in oil can easily flow out of the emergency throttle valve along with hydraulic oil; pollution particles are prevented from being retained in the valve, the cone angle of the valve head is variable, and then continuous change of pressure is achieved.

The utility model relates to a lying massage chair frame which comprises a base frame, a cushion frame, a backrest frame, a leg and foot frame and an electric push rod. The backrest frame is arranged at the rear part of the cushion frame, the backrest frame and the cushion frame are movably arranged on the base frame, and the cushion frame and the backrest frame are driven by the electric push rod to swing; wherein a first linkage mechanism is arranged between the front end of the backrest frame and the front end of the cushion frame, a second linkage mechanism is arranged between the front end of the leg and foot frame and the front end of the cushion frame, the electric push rod is hinged between the front end of the base frame and the front end of the cushion frame, and the angle of the backrest frame and the angle of the cushion frame are adjusted through the first linkage mechanism. And the angle of the cushion frame is changed along with the change of the leg and foot frame driven by the second linkage mechanism. According to the utility model, the electric push rod is matched with the two linkage mechanisms, so that the backrest frame and the leg and foot frame are correspondingly linked for adjustment; the chair has the characteristics of unique conception, simple structure, no forward sitting posture and horizontal lying posture, and has the effects of relaxation and sleep promotion.

This invention discloses a continuously variable transmission (CVT), specifically relating to the field of transmission technology. It includes a housing with an adjustment component on it. The adjustment component includes a connecting cover at one end of the housing, and an angle-adjustable ball joint hinged within the connecting cover. A first shift lever is located at the bottom of the ball joint. Through angle adjustment of the ball joint, and the linkage between a slider and a concave block, the first and second shift levers slide laterally, allowing for real-time fine-tuning of the meshing depth between the first and second connecting wheels and the linkage gear. This dual adjustment structure works synergistically, breaking the limitations of traditional segmented speed regulation. It enables seamless switching of the transmission ratio within a preset range. Furthermore, the high-precision angle control of the servo motor combined with the micron-level displacement adjustment of the ball joint ensures that the transmission ratio meets the corresponding control requirements, satisfying the needs of high-precision speed regulation scenarios.