Analysed the gas-powered liquid braking system and the entire hydraulic power that used extensively in the construction machinery,introduced three wet brake and their characteristics and principle,then concluded that the wet multiple disk brakes and all hydraulic braking system could meet the special requirements for braking system of the explosion-proof rubber tire vehicle.

Modelling and restraining study of brake noise on wet multiple brake;

The drive mode and working principle of the new hydraulic-mechanical transmission of vehicle,the structure of the wet multiple brake which is set beside the main drive reducer of the drive axle,and the supporting role of the vehicle which plays in the mechanized mining in coal mines are all introduced.

The influence of temperature, rotational speed, coolant oil flux on the drag torque and the influence of controlling valve flux on the response time are analyzed by the experiment of wet multidisc brake, the traditional formula of drag torque is corrected by inducting a coefficient .

To study the distribution and dissipation of braking power of wet multidisc brake and determine thermal load and thermal flux distribution between mated discs, the concept of distributing brake power four times was put forward.

To study initial pressure distribution of wet multidisc brake and influence of structure factors on initial pressure distribution, the FE model of initial pressure distribution was created and parametric programs were programmed.