The mineral oil type hydraulic oil shall be used as the workingmedium for hydraulic hoist, and the L-LM, L-HM, L-HV and L-HShydraulic oils with viscosity grades of 32 to 68 in GB/T 11118.1 shallbe selected. Specific viscosity grade and application conditi...[繼續(xù)閱讀]

    7.1.1 The hydraulic control and safety protection circuits withcomplete functions shall be designed for hydraulic system of the hoistbased on the gate operation requirements, including: the hydraulicpump no-load starting circuit, the locking circuit to pr...[繼續(xù)閱讀]

    7.2.1 The components layout of hydraulic valve block shall becompact and easy to debug and repair; the internal channels ofintegrated block shall be short and reasonable. The meters shall bearranged in one meter board for vision.7.2.2 The selection of nom...[繼續(xù)閱讀]

    7.3.1 The electric drive mode is generally adopted for hydraulicpump units of hydraulic hoist, which is composed of hydraulic pumpand motor.7.3.2 The requirement of the hydraulic system design, such aspressure characteristics, volumetric efficiency and se...[繼續(xù)閱讀]

    7.4.1 The oil tank shall be of no-pressure and sealed structure, andshall have the function of cooling, separating foam and pollutant fromoil and others. The structure dimensions of oil tank assembly shall bedesigned to have enough volume and suitable for...[繼續(xù)閱讀]

    7.5.1 The nominal diameter and wall-thickness of hydraulic pipeshould be determined through calculation according to the maximumworking flow, allowable velocity of oil flow and the maximumworking pressure. The nominal diameter of hydraulic piping shouldbe...[繼續(xù)閱讀]

    7.6.1 The hydraulic cylinder assembly shall be of compactstructure, which shall be easy to repair and convenient to install. Bothrod chamber and rodless chamber of hydraulic cylinder shall beprovided with an exhaust device.7.6.2 The calculating pressure o...[繼續(xù)閱讀]

    8.1.1 Calculation methodThis standard applies the allowable stress design method forcalculation of structural members. Calculation does not take intoaccount the effect of the plastic materials, and fatigue strengthcalculation is not performed either.8.1.2...[繼續(xù)閱讀]

    8.2.1 Steels in structural members and their allowable stress8.2.1.1 Steels in structural members(1) The steels in bearing structural members shall be selected inconsideration of the factors such as the importance, loadcharacteristics, stress state and co...[繼續(xù)閱讀]

    8.3.1 The strength calculation for structural members8.3.1.1 Basic principleThe loads for calculation in structural design shall be conformedto that in 4.9.3, and the position and direction of action shall be themost unfavorable conditions for calculation...[繼續(xù)閱讀]