3results about How to "Precise and effective control" patented technology

The utility model discloses a chain tensioning device for a tape winder, and relates to the field of chain tensioning. The chain tensioning device for the tape winder comprises a first installation part and a second installation part, a movable tensioning wheel is arranged on the outer wall of the first installation part, a fixed tensioning wheel is arranged on the second installation part, a hydraulic cylinder is installed between the first installation part and the second installation part, and a pressure sensor is arranged below the movable tensioning wheel. According to the chain tensioning device for the tape winder, a hydraulic cylinder is started, a first mounting part is pushed to rotate, the distance between a movable tensioning wheel and a fixed tensioning wheel is increased, a chain is tensioned, at the moment, the movable tensioning wheel has the trend of moving downwards along a supporting shaft, pressure is transmitted to a pressure sensor through a spring, and the pressure sensor monitors the pressure value in real time; and when the pressure reaches a threshold value preset by a program, the hydraulic cylinder is controlled to stop stretching according to a feedback signal, so that the chain is kept in a reasonable tensioning state, the structure is simple, and control is accurate and effective.

The invention provides a crankcase ventilation control method and a vehicle, the method is applied to a crankcase ventilation control system, and a crankcase in the system communicates with an air inlet unit through an air supplementing pipeline; an air supply valve is arranged on the air supply pipeline; the method comprises the steps that the hydrogen concentration in a crankcase is determined based on the obtained engine rotating speed and output torque; in response to the fact that the hydrogen concentration in the crankcase is larger than or equal to a preset concentration value, the gas supply opening degree of a gas supply valve is determined; and the opening degree of a gas supplementing valve is adjusted to the gas supplementing opening degree, so that the hydrogen concentration in the crankcase is reduced to be lower than a preset concentration value. By controlling the opening degree of the air supply valve, the air supply amount entering the crankcase is effectively controlled, namely, the hydrogen concentration in the crankcase can be rapidly controlled within a reasonable range, and the explosion risk is avoided.

The utility model discloses a kind of multi-channel intelligent temperature control box applied to flexible surface heating system, it is characterized by;Remote controller (1) is connected temperature control module (2), concentrator (3) respectively by wire, temperature control module (2) is connected concentrator (3), relay module (4), switching power supply (5), input-output module (9) respectively by wire, concentrator (3) is connected man-machine interface (13) by wire, relay module (4) is connected terminal (6), input-output module (9) respectively by wire, switching power supply (5) is connected terminal (6) respectively by wire, terminal (6) is connected power circuit breaker (8), input-output module (9) respectively by wire, load power switch (7) is connected power circuit breaker (8) by wire.The utility model modularization integration, visualization, and easy operation, convenient to use.