maintenance bridge crane
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 by coating thickness limit, easy to peel off, and the above two methods are repaired with metal, can not change the “hard to hard” with the relationship between the various forces, will cause wear again. The latest repair methods are mainly based on polymer composite materials, the application of more beautiful Ka Wah technology products, which has a strong adhesion, excellent compressive strength and other comprehensive properties. Application of polymer materials to repair, not only no welding thermal stress effect, Repair thickness is not restricted, At the same time, the product has the metal material does not have the concessions, can absorb the shock of the equipment, to avoid the possibility of re wear, And greatly extend the service life of the device components, save a lot of downtime for the enterprise, creating huge economic value.
Generally speaking, only four active and driven wheels are used in the bridge crane. If the weight is very big, 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 by single girder and in the end beam on both sides of span, double girder door frame is composed of two main girder and end beam.