Component limiting device and electrical control cabinet

The utility model discloses a component limiting device and an electrical control cabinet. The component limiting device comprises a support; the locking mechanism is installed at one end of the support and comprises an end support and a middle ring, and the end support is connected to the end of the middle ring; the middle ring is provided with a power tooth, the end support is provided with a limiting structure, the power tooth is in transmission connection with the limiting structure, and the limiting structure is used for locking a component; the tensioning mechanism is mounted on the bracket and is connected with the power teeth; the tensioning mechanism is used for pulling the power tooth and fixing the position of the power tooth, and then the limiting mechanism is driven to lock the component. And a plurality of components and component limiting devices are arranged in the electrical control cabinet. According to the component limiting device and the electrical control cabinet, the structure is compac