A method for energy-saving control of single-bucket hydraulic excavators in different working conditions
A hydraulic excavator, energy-saving control technology, applied in the hydraulic field, can solve the problems of hydraulic system heating, frequent load changes, environmental pollution, etc.
Active Publication Date: 2015-08-12
泰州市海通资产管理有限公司
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Problems solved by technology
However, there are multiple energy conversions in hydraulic transmission, and the hydraulic oil tank causes potential environmental pollution and oil loss. Therefore, hydraulic technology must improve the performance of hydraulic transmission and control in order to meet the needs of sustainable development and energy saving. Mechanical transmission competitiveness
The single-bucket hydraulic excavator is an important construction machine, which has the advantages of flexible and convenient operation and a wide range of adaptation; however, due to the complex operating conditions of the single-bucket hydraulic excavator, frequent load changes, and a large range of changes during the operation, there are many The energy loss of link, which mainly includes: the loss caused by the non-economic matching operation of the engine-variable pump system, the flow loss and pressure loss of the pressure oil of the hydraulic system
These losses not only waste energy, but also cause heating of the hydraulic system and deterioration of work performance
Method used
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Embodiment Construction
[0012] The energy-saving control method for a single-bucket hydraulic excavator according to working conditions according to the embodiment of the present invention, the main steps of which include:
[0013] (1) Firstly, load sensing is adopted, that is, the hydraulic system pressure is used as a judgment signal to judge the working state of the excavator. The single-chip microcomputer controls the input and output of the stepping motor according to the different states of the excavator, and then controls the engine throttle. Stabilize the engine near the required speed;
[0014] ⑵Assembly connect components according to the following parts: single-chip microcomputer, I / O interface circuit, A / D conversion circuit, signal conditioning circuit, drive circuit, display alarm and photoelectric isolation circuit;
[0015] ⑶Then, the single-chip microcomputer adopts AT89C51 single-chip microcomputer, which integrates 2K bytes of electric erasable flash memory in the chip. The working...
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The invention discloses an energy-saving control method for divided working condition of a single-bucket hydraulic excavator. The method comprises the steps that: a load sensing is used for connecting parts, i.e., a singlechip, an input / output (I / O) interface circuit, an analog-digital (A / D) conversion circuit, a signal processing circuit, a drive circuit, a display alarm and an optoelectronic isolation circuit part; then the singlechip is an AT89C51 singlechip, and a 2k-byte electrical erasure flash memory is integrated in the singlechip, wherein the working efficiency of the AT89C51 singlechip is 6-40MHz, a clock source is formed by an internal oscillator of the singlechip and a quartz crystal, wherein the oscillation frequency of the crystal is 12MHz; and an I / O chip is expanded on a controller. The energy-saving control method has the beneficial effects that: in the whole mode, the signlechip takes the pressure of a hydraulic system to be as an judgement signal to judge the working position of the hydraulic excavator, and further, the accelerator of an engine is controlled by a stepping motor, so that the opening degree of the accelerator is always in an appropriate value which adapts a load, and the purpose of the energy saving is reached.
Description
technical field [0001] The invention relates to the field of hydraulic technology, in particular to an energy-saving control method for a single-bucket hydraulic excavator according to working conditions. Background technique [0002] The hydraulic system has the advantages of large power, good adjustability of working pressure and flow, heat can be brought back to the oil tank, etc. However, there are multiple energy conversions in hydraulic transmission, and the hydraulic oil tank causes potential environmental pollution and oil loss. Therefore, hydraulic technology must improve the performance of hydraulic transmission and control in order to meet the needs of sustainable development and energy saving. Mechanical transmission competitiveness. The single-bucket hydraulic excavator is an important construction machine, which has the advantages of flexible and convenient operation and a wide range of adaptation; however, due to the complex operating conditions of the single...
Claims
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IPC IPC(8): E02F9/22
Inventor 郭亚旭
Owner 泰州市海通资产管理有限公司