For cranes with load when walking

For cranes with load when walking , self propelled pallet jack because the body shaking, boom along the pitch , the rates are constantly changing, but also because of the inertia of the heavy lifting and swinging , hanging oblique form , therefore , from the weight of the load shall not exceed the allowable 70 % solid walking path should be smooth, heavy cranes should be positive in the forward direction , hydraulic hand truck to facilitate the operator to observe and control the weight from the ground shall not be greater than 500mm, and should be well tied rope , slowly. Non- load driving long distances .