Abstract:
The invention provides a system for regulating pressure equalization in hydraulic mechanisms to suppress oscillation in heavy equipment. The system includes a first and second hydraulic lines, a crossover valve in communication with each of the first and second hydraulic lines, a timing system in communication with the crossover valve, and a motion detector in communication with a heavy equipment component. The motion detector senses a linkage motion and operatively opens the crossover valve, which remains open as directed by the timing system.
Abstract:
An accumulator (1) capable of suppressing a hydraulic pressure vibrating noise in the range of a sealed gas pressure or below and being reduced in size, wherein an operating member (5) having a bellows (6) is disposed in a housing (2) to partition the inside of the housing (2) into a pressure sealed chamber (8) and a pressure inflow chamber (9) and a fluid inlet (15) for leading pressure fluid from a system side to the pressure inflow chamber (9) is formed in the end wall part (3a) of the housing (2), a chamber forming member (17) is fixed to the inside of the housing (2), and a chamber (18) and a choke (19) are provided between the chamber forming member (17) and the end will part (3a) of the housing (2).
Abstract:
In a brake apparatus, a pump sucks brake fluid and discharges the brake fluid through a pump discharge conduit. Orifices are connected in series with one another with respect to brake fluid flow discharged from the pump and restrict the brake fluid flow. Because the orifices are formed for restricting brake fluid pulsation, the brake fluid pressure discharged from the pump decreases gradually. Therefore, cavitations are not generated at lower reaches of the orifices because the brake fluid pressure does not decrease rapidly. As a result, the brake apparatus decreases or restricts undesirable noise.