The hydraulic system

The hydraulic system consists of two parts: signal control and hydraulic power. The signal control part is used to drive the control valve in the hydraulic power part.

The hydraulic power part is represented by a circuit diagram to show the relationship between different functional elements. The hydraulic source contains hydraulic pumps, electric motors, and hydraulic auxiliary components; the hydraulic control part contains various control valves, which are used to control the flow, pressure, and direction of the working oil; and the execution part contains hydraulic cylinders or hydraulic motors, which can be customized according to actual requirements. choose.

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Crushing bed hydraulic system

When analyzing and designing actual tasks, block diagrams are generally used to display the actual operating conditions of the equipment. Hollow arrows indicate signal flow, while solid arrows indicate energy flow. The sequence of actions in the basic hydraulic circuit is the reversing and spring return of the control element (a two-position, four-way directional valve), the extension and retraction of the actuator (a double-acting hydraulic cylinder), and the opening and closing of the relief valve. For actuators and control elements, the presentation is based on the corresponding circuit diagram symbols, which also prepares for the presentation of circuit diagram symbols.

Depending on how the system works, you can number all the loops sequentially. If the first actuator number is 0, the associated control element identifier is 1. If the element identifier corresponding to actuator extension is even, then the element identifier corresponding to actuator retraction is odd. Not only the hydraulic circuit but also the actual equipment should be numbered so that system faults can be found.

The DIN ISO 1219-2 standard defines the component number composition, which includes the following four parts: equipment number, circuit number, component identifier, and component number. If there is only one device for the entire system, the device number can be omitted.

In practice, another numbering method is to serially number all components in the hydraulic system. At this time, the component numbers should be consistent with the numbers in the component list. This method is especially suitable for complex hydraulic control systems, where each control loop corresponds to its system number.

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