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Which parts of the expander are combined together?

Pneumatic pipe expander has the characteristics of simple operation as well as easy to move, and the use of automated control can ensure the quality of expansion, therefore, in a variety of chemicals, metallurgy, boilers and oil, refrigeration and other manufacturing sectors have been widely used, the flaring machine is usually a combination of controller and expander body and hose reel made.

Pneumatic hydraulic pipe expander from the expansion bar reel, such as the roll and shell combination, its role is to reel pressure pipe, steel pipe plastic deformation of the radius direction, plus the immediate tube plate expansion. Through the universal joint connected to the spindle expander (also called telescopic rod) hose reel and bar. When the expander hose reel is the prime mover, it is composed of housing, car, gear box, spindle, processing, power cord, plug, etc. Cast aluminum alloy casing. Square protection three-phase motor 50 Hz two-pole squirrel-cage asynchronous motor, due to the cooling fan inside the machine. The rotation of the motor is transmitted to the spindle through the reduction gear. Handles are located on both sides of the machine body.

The 4-core sheathed wire power cord is used, of which the black core is the grounding wire; the power cord is rubber sheathed where it enters the housing. Adopting three-phase four-post plug power cord, the power cord is connected to the controller. The role of the controller is to automatically control the degree of expansion, to ensure the quality of expansion according to; and has a leakage protection device to prevent human electrocution.

This instrument uses semiconductor components and switch lines, small size, light weight, high sensitivity, reliability and easy adjustment. Its control principle is: when the expander drive the rotating reel roll tube pressure steel pipe, the motor will output a certain torque when the tube in close contact with the tube plate expansion, rapidly increasing the output torque of the motor, at this time the motor input current also increased by a certain proportion, so the size of the motor input current control, you can control the degree of expansion; when the machine input current exceeds the specified value, the switch line will Make the expander automatic sequence of stopping, reverse retreat from steel, from the ground stand and other activities in retirement. Through the close cooperation of all parts of the expander to complete the expansion machine Z basic functions, and through the understanding of the structure of the expander can also make us better use of the expander, and in the operation will be high more convenient.

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Post time: Sep-30-2022