Method for inspecting whether the surface of four-column oil press is leaking oil

The key of the hydraulic press is composed of the main engine, the hydraulic press control system and the electrical equipment control system. The main machine consists of operation table, positioning pin, guide slide block, upper cylinder, injection cylinder and other structures; The hydraulic transmission system of the four-column hydraulic press is composed of hydraulic control system, implementing components, auxiliary components, power system and working substances.

The key of the control system of the electrical equipment of the four-column hydraulic press is composed of automobile relay, AC contactor, key, limit switch and electric control cabinet. The principle of the four-column hydraulic press is that the hydraulic transmission system is operated by the electronic control system, and then the hydraulic press control system operates the main engine. The host moves the limit switch and feeds the data signal feedback to the electronic control system to complete the circulation system operation. The following is a four-column hydraulic press surface check method for oil leakage.

1. The physical isolation method increases the distance between the disturbed circuit or device of the four-column hydraulic press and the interference source. Since the interference intensity is inversely proportional to the square of the distance, it is recommended that you use a stable power supply. In order to suppress the power supply noise of the four-column hydraulic press and the interference between the power supply and the ground cable, the connection between the power supply and the numerical control device can be isolated

2. Shielding method. In order to prevent the four-column hydraulic press and components from being affected by external electromagnetic fields, isolation shielding measures are usually adopted, electromagnetic shielding or discharge by reflection or absorption.

3. Grounding method: The four-column hydraulic press connects its shell with the earth. For protection grounding, if the system grounding of the four-column hydraulic press is connected to the earth as a system grounding, anti-interference can also be achieved through the form of protection grounding or system grounding.

4. The filter can suspend input interference and induced interference on the signal transmission line. Commonly used are low-pass filters and DC filters, which are generally installed between the power supply and the numerical control device of the four-column hydraulic press.