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SHANDONG AOLIDE ENGINEERING EQUIPMENT CO., LTD.
Overview of the walking hydraulic system of concrete laser paver
The driving controller is an essential core control component of the concrete laser paver. Its performance is not only related to the performance of the entire paver equipment, but also has a very direct connection with the quality of the pavement work. Therefore, it is necessary to understand and master the structure and working principle of the paving machine hydraulic system and the hydraulic driving system in time. In order to better improve the driving performance of the concrete laser paver, the professionals of Aolide Engineering will take you to understand the relevant content.
[Composition of concrete laser paver walking hydraulic system]
From the way of power transmission, the current driving drive of the paver mainly has three modes: mechanical drive, mechanical-hydraulic drive and full hydraulic hydrostatic drive. Among them, the static pressure drive has the following advantages over other driving modes: easy to realize stepless speed change and driving sensitivity; can realize turning and in-situ steering; simple and stable operation, extensive control and adjustment methods; automatic driving control; hydraulic pump and motor can Flexible installation can effectively utilize the power provided; it can be assisted by a static pressure system; the hydraulic motor is not overloaded, and so on.
The static pressure drive system can be divided into open system and closed system. Due to the compact structure of the closed system, the small chance of air entering the hydraulic oil and the stable operation, the volumetric speed control system of the closed oil circuit is mostly used in the travel drive hydraulic system. Achieve stepless speed change. From the route of power transmission, the driving drive hydraulic system can adopt a single pump-single motor system.
[Composition and working principle of hydraulic driving system for concrete laser paver]
The drive circuit is mainly composed of a variable pump, a variable motor, a charge pump, a variable cylinder, a proportional valve, a safety valve, a check valve, a relief valve, an oil filter and a fuel tank. The variable pump in the system provides both hydraulic energy and the main control components. Changing the displacement and direction of the variable pump can change the output speed and direction of the hydraulic motor. The safety valve determines the higher operating pressure of the system. As a closed circuit, the high and low pressures of the oil circuit are interchanged during operation, so a safety valve is provided in both directions of the oil passage. Since the closed circuit inevitably has a specific leak, the charge pump provides a control oil path, and the check valve supplies oil to the low pressure circuit of the system, and a specific pressure can be established in the low pressure circuit. The relief valve sets the system charge pressure, and the charge pressure should be slightly higher than the pressure on the return side of the main oil line. In this system, the charge pump is also used as the hydraulic oil source of the variable mechanism to ensure that the main pump can still control the proportional valve when the displacement is zero. The working principle of various typical pump-motor closed circuits is basically similar to that of the hydraulic circuit. The main difference is that the hydraulic pump and the motor are adjusted in different ways.