2022-4-6 14:10:29
When the fully loaded sports car is always in the position at both ends, the strut is subjected to large vertical stress. For gantry cranes with extended arms, when the sports car is at the end of the extended arm, the strut will suffer a large vertical stress.
The gantry crane with an outstretched arm should enable the sports car and the transported goods to pass through the pillar freely.
The bending moment diagram and shear diagram of gantry crane with oneortwo outstretched arms due to its own weight and dynamic load. The braking force of the sports car can be calculated, and the friction coefficient between the wheel and the track is 0.15.
Longitudinal wind pressure of bridge (at full load): take 20-25 kg / m2. Horizontal force due to wind pressure and braking force (in the direction of sports car track).
The force on the angle iron on the main beam can be determined by referring to what we said before in detail. If we install the sports car track on the lower edge of the longitudinal beam and place it on a suitable suspension mechanism, the structure of the pillar and its connection with the main beam are simple, simple. At the same time, this suspension mechanism is used as the connection of the reinforcing frame to transmit all the horizontal forces (mass force and wind force) to the horizontal connection frame on the plane of the longitudinal beam.
