PLC (Programmable Logic Controller) controlled variable-frequency piling machine

Abstract

The invention relates to the field of piling machines, in particular to a PLC (Programmable Logic Controller) controlled variable-frequency piling machine which comprises a pile frame, a long spiral drilling tool, a control device, an operating table and a power source, wherein the pile frame comprises vertical pillars, inclined struts, a platform, a base disk, a counter weight, a pulley block and a traveling device; the control device comprises a drilling tool rotating speed control device and a drilling tool lifting control device, the drilling tool rotating speed control device and the drilling tool lifting control device respectively comprise a reduction gear and a motor, and the motor is connected with the reduction gear. The PLC controlled variable-frequency piling machine is characterized in that the control device also comprises a PLC controller, a drilling tool frequency changer and a winch frequency changer, wherein one end of the drilling tool frequency changer is connected with the PLC controller, the other end is connected with the motor; one end of the winch frequency changer is connected with the PLC controller, and the PLC controller is connected with the operating table. Because the structure is adopted, drilling tool rotating speed control and drilling tool lifting control are organically combined through the PLC controller and the frequency changers to form intelligent automation control, and the drilling tool is prevented from being clamped due to too high speed or too great resistance. The invention has the advantages of voltage reduction during power start, high working efficiency, energy saving and the like.

Description

Technical field [0001] The present invention involves the field of pile driver. Specifically, it is a PLC control variable frequency pile driver with high energy saving, high degree of automation, and preventing the long spiral drill rods stuck due to excessive drilling speed or excessive resistance. Background technique [0002] At present, the existing electric pile driver is usually composed of pile racks and long spiral drill rods, control devices, operating tables and power supply.Including the drill speed control device and the drilling ulceration control device. The diamond speed control device is composed of a reducer, motor, and transformer. The drill lift control device is composed of a reducer, roll cylinder, winding motor and resistor.Generally, a crawler or step -by -step device is used. The platform is fixed with the chassis and the walking device. There is a pillar at one end of the platform and a weight on the other.The lower end is connected to the platform. Ther...

AI Technical Summary

Problems solved by technology

Its shortcomings are: the operator needs to have skilled operation skills, the operator needs to always observe the ammeter on the console, stop drilling when the current increases, and then drill when the current decreases, repeat the operation, a little negligence or fatigue, If the drilling is not stopped in time, the current will be too large and the drilling will be stopped, resulting in a drilling accident; after the drilling is buried, the starting current with load will increase sharply, causing a large voltage drop in the grid, and the contactor cannot be started due to insufficient pull-in voltage. If a person starts it forcibly, it will cause the transformer to burn out, or cause the entire electric panel in the electrical box on the platform to burn out.

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