Heating device of lining

Abstract

The invention discloses a heating device of an over-long lining. The heating device comprises a heater, thermocouples and a control cabinet. The heater is divided into an upper part and a lower part. A metal casing, an alumina silicate fiber heat-insulation layer, and a rope shaped electric heating band are provided from an external layer to an internal layer in order. The rope shaped electric heating band is controlled by an electrical control cabinet. Double thermocouples are employed to measure temperature. When using, the upper part and the lower part are connected into one body through abolt and a nut, simultaneous heating and assembling of the lining can be realized. In an assembling process, the heater and the lining move together, constant temperature of the lining in the assembling process is ensured, and an aperture is prevented from deformation. The heating device has the advantages of simple structure and small energy consumption loss, and is especially suitable for heating a large scale over-long lining with the length of more than two meters.

Description

technical field [0001] The invention relates to a heating device, in particular to a heating device suitable for super-long bushes with a length of more than two meters. Background technique [0002] The bush assembly adopts interference fit, which is completed at a relatively high temperature. It is necessary to ensure that the temperature of the bush during assembly must be higher than the temperature of the bushing. The interference fit is used for the fast connection between the hole and the shaft, and no relative movement between the two is allowed. For shaft sleeve parts with interference fit, in order to facilitate assembly during assembly, the sleeve parts are often heated to make them expand when heated, the inner hole becomes larger, and can be easily installed on the matching shaft. This method is called thermal assembly. . Thermal assembly uses the principle of thermal expansion and contraction. During installation, the outer layer of accessories is heated to e...

AI Technical Summary

Problems solved by technology

Oil tank heating is a traditional heating method that is widely used. Oil is used as the heating medium to heat the bushing. The heating of the oil requires a lot of heat, which causes a lot of waste of energy.

[0010] In the above several traditional bushing heating methods, the bushing is heated and then removed from the heating device for assembly. Since the bushing cannot continue to be heated and cooled rapidly during the assembly process, the aperture shrinks and deforms, and the bushing is easy to move without moving. When in place, it is fixed on the shaft, making it impossible to complete the assembly process

Therefore, these devices are not suitable for the assembly of super long bushings

Images