The characteristics of tire coupling and the repair technology of the coupling

　　The tire coupling has the following characteristics: First, the product has excellent cushioning and shock absorption performance, and has excellent compensation performance for axial, radial and angular deviations, which can effectively reduce the equipment during operation. The current peak value is reduced by 50% compared with other couplings.The second is that for the large-scale speed-regulating motor used in the production process, by installing a tire coupling, the additional load between the shafts during the automatic control of the motor can be eliminated, and the flexibility can be improved, which is unmatched by other couplings.The third is through a special process design, in addition to no need to add lubrication, maintenance-free, especially suitable for humid, dusty working environment.The product has low noise, long life, and easy disassembly and assembly during operation, which fundamentally solves the problem of easy damage and short life of other couplings in harsh environments.It fills a gap in my country's coupling products.

　　The tire-type coupling uses part of the tire-like elastic elements to realize the two-axis connection through bolts and sleeves. The coupling has good elasticity and damping characteristics, and can compensate for the relative displacement of the two shafts.

　　Tire coupling: use part of tire-like elastic elements to achieve two-axis connection through bolts and sleeves.The coupling has good elasticity and damping characteristics, can compensate the relative displacement of the two shafts, has a simple structure, low noise, no lubrication, and can purify the working environment. The main feature is easy assembly, disassembly and maintenance, and the main axis is centered at one time. Later, when changing the elastic element, there is no need to move the host, and the elastic element can be changed quickly, saving time.It can be widely used in mining, metallurgy, shipbuilding, textile, water pump, light industry and other industries, partially replacing the existing elastic couplings and gear couplings.The tire coupling produced by Botou Tianda Coupling Factory has been developed into a series of products for selection.

　　Coupling repair technology:

　　When the lubrication effect of the coupling and the bearing bush fails to meet the requirements, a variety of failure characteristics will appear.If the oil pressure is low, the part between the shaft and the bearing bush will cause dry friction due to direct contact and cause damage and damage to the moving surface. At this time, the shaft surface is blue.If the lubricating oil fails or the pressure cannot be built up, the moving surface loses the protection of the oil film and directly contacts for dry friction.The alloy layer of the bearing bush melts when the temperature rises, and the phenomenon of “shrinking the bush” will occur if the machine is stopped in time, and serious parts damage will be caused if the machine is not stopped in time.

　　Certain types of bearings that are really difficult to buy have no spare parts and have to be repaired after failure, especially imported bearings; bearings have minor damage, such as slight water rust during storage, and slight fretting abrasion during transportation. It is a pity that this type of situation is easy to repair and discard.In addition to economy, the repair of the coupling has its technicality, which requires the repairer to fully understand the corresponding technical requirements of the bearing, and the characteristics of the bearing and its parts in the structure, process and materials, otherwise it is difficult to guarantee the bearing The repair has a satisfactory effect.The main material factors that affect the service life of high-carbon chromium steel rolling bearing parts and the degree of control are: (1) The carbides in the original structure of the steel before quenching are required to be fine and dispersed.High temperature austenitization can be used at 630°C or 420°C, or it can be achieved by forging and rolling waste heat rapid annealing process. (2) For GCr15 steel after quenching, it is required to obtain an average carbon content of

　　The microstructure of about 0.55% cryptocrystalline martensite, about 9% of Ar and about 7% of undissolved carbides in a uniform and round state.This kind of microstructure can be controlled by quenching heating temperature and time.