A high-level unloading lifting boom energy-saving control system

Abstract

The invention discloses an energy-saving control system for high-level unloading lifting boom, which includes an oil circuit system and a circuit system; the oil circuit system includes a first one-way valve, a pilot overflow valve, a pilot pump, a working pump, a second one-way Valve, multi-way valve, pilot valve, fixed value pressure reducing valve; the circuit system includes solenoid valve, pressure relay, proximity switch and power supply; the second one-way valve is connected between the large chamber of the dump cylinder and the oil tank to control the dump cylinder For oil replenishment, the solenoid valve is connected between the multi-way valve and the fuel tank. Through the reversing of the solenoid valve, the small chamber of the tipping bucket cylinder is directly connected to the fuel tank for oil return. The entire energy-saving control system allows the boom to continue to be lifted when the bucket unloading limit block is attached to the boom. By eliminating the suction phenomenon of the large cavity of the dump cylinder and making the small cavity overflow smoothly, it can be smoothly realized. The automatic extension of the bucket cylinder reduces the resistance caused by the extension of the bucket cylinder when the boom is lifted, and reduces energy consumption. The flexibility and work adaptability of the whole machine are increased.

Description

Technical field [0001] The invention relates to a loader, in particular to an energy-saving control system for a high-position unloading lifting boom. Background technique [0002] When unloading, the loader is generally lifted to a higher position (or the highest position), and then unloaded. In order to ensure that the material is unloaded cleanly, when unloading, the bucket is generally unloaded until the unloading limit block is attached to the boom on. After unloading, the driver often retracts the bucket until the bucket is overturned, and the tipping cylinder is extended. When the main blade of the bucket exceeds the height of the boom or the bucket is retracted to the position before unloading, the whole machine is reversed and then landed. Boom, proceed to the next shovel loading cycle, and it is not allowed to lift the boom directly. If after high-position unloading, when the boom is directly lifted without retracting the bucket, due to the motion properties of the si...

AI Technical Summary

Problems solved by technology

Therefore, users hope that the whole machine can have more flexibility and higher reliability. When the driver lifts the boom at this time due to the needs of the working mode, it will cause greater power consumption and more hydraulic failures and add extra repair costs

In addition, the above-mentioned phenomenon is relatively hidden, and it is difficult for the driver to notice it, which damages the service life of the whole machine.

Images