A single H sluice valve that is used for heavy automotive transmission of major-minor case structure

The utility model provides the utility model discloses a derive high-grade district of odd-side cylinder or the gaseous of low-grade district simultaneously in the low-grade district or the high-grade district of single H sluice valve of the heavy automotive transmission of major-minor case structure, the first valve body that includes, case, valve barrel, piston and reset spring, single H sluice valve leading-in odd-side cylinder after with the control of gases gating of gas circuit control valve on the heavy automotive transmission's of present major-minor case structure basis, adopt brand-new gas circuit, the two H valves of cancellation increase gas circuit control valve and single H sluice valve and control the gas circuit jointly, adopt the gas circuit control valve to control the break-make of high-grade gas circuit, by the high low-end conversion of single H sluice valve control to with change over switch integrated in the preselector valve, thereby make the operation more simple and convenient clear, controlling device's structure can be simplified simultaneously to the put into gear probability of maloperation of greatly reduced, reduces the assembly degree of difficulty the utility model discloses mainly used applicant's 8 fast and 9 speed derailleurs, very big improvement the travelling comfort of shifting gears to and the reliability of controing.