? fixed pulleyFixed pulley features: no effort, but can change the direction of the power. (Essentially an equal arm lever).Definition: a pulley with a fixed shaft in the middle.② Essence: the essence of the fixed pulley is: equal arm lever③ Features: The use of fixed pulley can not save effort but can change the direction of the power.Movable pulleyPu…
?. FunctionAs a close partner of the bearing, the bearing seat plays an important role in the entire shafting. It is generally located at both ends of the shaft, and its main function is to support and fix the bearing, so that the shaft and its connecting parts have a certain position relationship. In addition, the bearing seat is generally equipped with a…
? drum device is a lifting mechanism in lifting machinery winding steel wire rope components, is also an important force components.Classification of drum groupsThe drum group is classified from the material, according to the size of the lifting weight and the working condition, it is divided into casting drum and steel plate welding drum. Casting drum is …
1. Design reasonsCoupling type is reasonable, torque is satisfied, R Angle is appropriate.2. Manufacturing reasonsWhether the material is correct, there are no defects, whether the processing circle jump is satisfied, and whether the R Angle processing is in place.3. Reasons for arrangementWhether the two drum shafts at both ends of the synchronous coupling …
? The steel wire rope must be fixed on the drum reliably, easy to check, assemble and disassemble, to avoid excessive bending of the steel wire rope at the fixed place. At present, there are three commonly used fixing methods:1, fixed with a pressure plateThis method (as shown in Figure a) has the advantages of simple structure, convenient assembly and dis…
? Crane users need high-quality steel wire rope, which should be a steel wire rope with a long service life and a high degree of stability and reliability. The main reason for the failure of the steel wire rope used in the atmospheric environment is fretting fatigue. At present, the world's steel wire rope field takes preventive measures against frett…
