Common Knowledge of Single Girder Crane Hardness
The hardness of a single-beam crane looks very "hard" on the surface, but what about the internal parts? In a word, the introduction is very fragile. In fact, the fragile parts are not the poor quality of the user's understanding. Huadong Crane Company has no problem with the quality of hydroquinone, and it can only leave the factory after a certain inspection. However, when users use the machine, they do not follow the prescribed safe use rules and formal use methods, which results in vulnerability.
Regarding the hardness of lifting machinery, you cannot limit it, as long as you use it correctly. It is understood that the abstract single-beam portal crane of the crane vibration model is a space rigid frame structure composed of a main beam, outriggers, upper beams, and lower beams capable of bearing vertical and horizontal loads. When the fully loaded trolley is running and braking at the mid-span or cantilever limit position, the single beam door machine generates horizontal vibration due to the inertia force, and when the hoisting load is raised to the rated lifting height, the hoisting and hoisting trolley The quality is the closest, the vibration is the most serious, and it is a dangerous working condition.
However, with the hardness of the crane, there is no such danger. Regardless of its content, it will contribute to the stiffness of the single beam portal crane vibration system. Similarly, when the crane is vibrating horizontally, in addition to the main horizontal displacement component, it will also be accompanied by the vertical displacement component, so their vector sum should be taken into account. This vector sum can be defined as a comprehensive compliance vector to reflect the actual situation.
Therefore, according to the property that the eigenvalues of the matrix remain unchanged under the similarity transformation, it is an important way to transform a given matrix into a simple form matrix that is easy to find the eigenvalues by similarity transformation. That is, according to some certain rules, a sequence converging to the eigenvalues is generated or a sequence converging to the eigenvectors is constructed, so as to obtain the approximate eigenvalues and the approximate eigenvectors. In the use of cranes, its hardness is infinite and infinite. Stop danger and disaster for you!
