Drive controlling mechanism

Details Drive controlling mechanism Drive controlling mechanism

F - Mech Eng,Light,Heat,Weapons

04

B

138/45

F04B 1/12 (2006.01)

Patent

CA 1061681

Abrtract of the Disclosure A drive controlling mechanism comprises an operative block assembly securely connected with a motor housing accommo- dating therein a hydraulic motor and rotatably receiving a rotatory shaft of the hydraulic motor; a parking brake arrange- ment connected with the operative block assembly to brake and release a rotary shaft; a control valve arrangement provided to control of the hydraulic motor and actuation of the parking brake arrangement; a pair of inlet-outlet passages connecting the actuation ports of the hydraulic motor and the control valve arrangement; a control conduit arrangement having a shuttle valve permiting fluid under pressure to be introduced into the parking brake arrangement from the control valve arrangement and to be discharged from the parking brake arrangement; and a drain passage arrangement for discharging fluid under pressure from the parking brake arrangement through the shuttle valve to a drain chamber defined between the motor housing and the hydraulic motor. - 1 -

304301

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