Tyre coupling for Hebei LLA metallurgical equipment
The tire coupling for LLA metallurgical equipment is a highly elastic coupling with good shock absorption and offset compensation performance between shafts. The operating temperature is -20 to 80 degrees Celsius, and the transmission torque is 10 to 20000N.M. It is suitable for working conditions such as humidity, dust, shock, vibration, changeable forward and reverse rotation, and frequent starting. It is easy to disassemble and assemble without lubrication.
Tire couplings for LLA metallurgical equipment are made into non-standard couplings according to needs. When overloaded, the clamping flaps of the half couplings will work, and no malignant accidents will occur. Its structure is marked as M, standard half The structure of the coupling is K-type, which can no longer be marked in the display.
Analysis of the advantages and disadvantages of tire couplings: tire couplings are divided into two major categories: convex and concave. The convex is divided into three types: integral with skeleton, integral without bone and radial incision.Their common feature is that the tire ring is bolted to connect the two halves of the coupling to realize the connection of the two shafts. The inner side of the tire ring is bonded to the steel frame by a vulcanization method, and the bolt holes on the frame are welded with nuts.When assembling, bolts are used to connect the flanges of the two halves of the coupling, and the torque is transmitted by the friction generated between the tire and the flange end surface by tightening the bolts. The torsional shear deformation of the tire ring occurs when the tire ring is working, so the tire coupling It has a high elasticity, a large ability to compensate the relative displacement of the two shafts, and has good damping, and has a simple structure, does not require lubrication, and is relatively convenient for assembly and disassembly and maintenance.
The shortcomings of tire couplings are that the load capacity is not high and the external dimensions are large. With the increase of the relative torsion angle of the two shafts, the external shape of the tire is distorted, and the axial dimension is slightly reduced, which will produce larger The additional axial force increases the bearing load and reduces the service life.When the tire coupling is running at high speed, the centrifugal force of the outer edge of the tire expands outward, which will further increase the additional axial force.For this reason, measures should be taken when installing the coupling to make the direction of stress in the tire opposite to the direction of stress generated during work to offset part of the additional axial force and achieve the working conditions of the coupling and the two bearings.
The main types of tire couplings are: UL tire coupling, LLB tire coupling, LLA tire coupling, DL polygonal rubber coupling, LAK saddle block elastic coupling, etc. UL type, LLB type, and LLA type are the more commonly used models.Below we will focus on the characteristics of these couplings: UL tire coupling specifications are mainly UL1-18, nominal torque: 10-25000, allowable speed: 5000-800, shaft hole diameter: 11 -180mm, shaft hole length: 22-302mm, weight: 0.7-818, material: 45# round steel, cast steel, forged steel. UL tire coupling has good shock absorption and cushioning performance, which solves the cushioning effect that cannot be achieved by general couplings.
Tyre coupling for Hebei LLA metallurgical equipment Tyre coupling for Hebei LLA metallurgical equipment
