bridge crane maintenance skills
About bridge crane leakage situation maintenance skills
The active wheel and the speed reducer of the crane are running frequently，many times the emergency stop and stop will cause the reducer shaft torque, vibration, easy to cause leakage. After the occurrence of this kind of problem, the traditional method is mainly based on repair welding or brush plating, but there are some drawbacks: The thermal stress caused by the high temperature can not be eliminated completely, and it is easy to bend or break; The brush plating is limited by the thickness of the coating, easy to peel off, and the above two methods are used to repair metal, can not change the “hard to hard” fit, Under the combined action of various forces, it will lead to wear again. The latest maintenance methods for polymer composite materials, and the more application with the United States for technology products, which has strong adhesion, compressive strength and excellent comprehensive performance. Application of polymer materials to repair, not only no welding thermal stress effect, the thickness of repair is not restricted. At the same time the product of metal materials do not have rolled back, can absorb the impact of vibration equipment, avoid the possibility of wear and tear, and greatly prolong the service life of equipment components, save a lot of downtime for the enterprise, creating huge economic value.
Bridge crane operating mechanism generally only four active and driven wheels, if the weight is very large, commonly used to increase the wheel to reduce the wheel pressure. When the wheels for more than four, must adopt balanced articulated frame device, make the crane load evenly distributed on each wheel.
The door frame of metal structure is composed of main girder and end beam, divided into the single girder door frame and double beam door frame. Single girder gantry crane by single girder and in the end on both sides of the span of beam, double girder door frame is composed of two main girder and end beam.