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Mechanical Hydraulic Paver Rapid Development

Edit:AKW GROUP   Date:Jun 20, 2017

Mechanical Hydraulic Paver With the rapid development of infrastructure construction process such as transportation and energy in China, the demand and quantity of large and medium-sized construction machinery have been increasing rapidly in recent years. In many of the construction machinery, Mechanical Hydraulic Paver especially in imported equipment, the use of hydraulic transmission and full hydraulic drive is very common, such as tunnel boring machine, shield, large tons of beam vehicles, cranes, lift trucks, and paver, mining Machine, bulldozer, Mechanical Hydraulic Paver hydraulic closed loop can sand low, compact and easy to achieve stepless speed, in the construction machinery walking system has been widely used. But also open the loop compared to the closed loop design, installation and maintenance and maintenance have a higher degree of difficulty and technical requirements. Mechanical Hydraulic Paver The following combination of our open 100t flatbed truck hydraulic drive system, analysis of closed circuit technical requirements and installation, commissioning, maintenance features.

First, the displacement of the motor 16 can be set by adjusting the current of the proportional valve 17 according to the load size. Generally, the load of the motor 16 can be set as no load, heavy load, climbing third gear, corresponding to the motor 1/4 displacement, (1800r / min), Mechanical Hydraulic Paver so you can directly change the system flow, that is, to achieve the purpose of changing the speed of the car, because the engine speed is basically constant (1800r / min), so you can directly change the system flow, that is, to achieve the purpose of changing the speed of the car. The charge pump 4 feeds the low pressure oil into the main circuit through the filter 2 and the check valve 9 (or 12) and supplies oil to the control circuit at the same time. Mechanical Hydraulic Paver The main circuit of the excess oil through the flushing valve low pressure overflow through the radiator 14 flow back to the tank. When a transient overload occurs, the high pressure oil overflows through the relief valve 7 (or 11) to the charge circuit. When a severe overload occurs, the high pressure oil overflows through the relief valve 7 (or 11) to the charge circuit. When a severe overload (such as a wheel stuck) occurs, the sequence valve 6 (or 10) opens, Mechanical Hydraulic Paver and the high pressure oil rapidly reduces the displacement of the main pump 3 and overflows due to the pressure drop of the throttle valve 8 (or 13) The valve 7 (or 11) is opened, thereby reducing the main circuit pressure rapidly.

System speed exception:

1, check the fuel tank: oil shortage will lead to motor speed decline.

2, check the charge pressure: the lack of pressure will lead to motor speed decline.

3, check the pump output flow: the output flow is not correct will affect the output speed, indicating that the pump swashplate position is not right.

4, check the variable motor swashplate control device: If the variable motor displacement control device is not working properly, the motor swashplate position is not right: insufficient charge pressure can also cause the motor output is not normal.

System noise or vibration is too large:

1, check the fuel tank: oil shortage will cause suction, resulting in cavitation.

2, the system left in the air: the bubble will cause suction.

3, check the pump inlet vacuum: the inlet vacuum will increase the high noise. Insulation of the oil filter will increase the inlet vacuum.

4, check the coupling: coupling loose will increase the noise.