Power control method and power control system for hoisting equipment

A technology for lifting equipment and power control, applied in the field of power control systems and power control methods for lifting equipment, can solve problems such as program speed recovery, affecting normal work, and engine inability to adapt

Active Publication Date: 2015-03-04
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, since the engine speed has dropped at this time, the actual intake air volume of the engine has also decreased. Although the ECU controls the fuel injection volume to increase, it only takes 1-2 seconds from the sudden drop of the speed to the engine being pressed and turned off. This time is not enough to con

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  • Power control method and power control system for hoisting equipment
  • Power control method and power control system for hoisting equipment
  • Power control method and power control system for hoisting equipment

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Embodiment Construction

[0046] The core of the present invention is to provide a power control method for lifting equipment. By changing the way and time when the external load signal is transmitted to the engine, the method makes the engine respond quickly and effectively improves the power adaptability of the engine in low-speed working conditions. In addition, another core of the present invention is to provide a power control system for lifting equipment.

[0047] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Please refer to figure 1 , figure 1 It is a flow chart of a specific embodiment of the power control method of the lifting equipment provided by the present invention.

[0049]In a specific embodiment, the present invention provides a power control method of lifting equipment, th...

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Abstract

The invention discloses a power control method for hoisting equipment. The method comprises the steps of: 1) detecting the current loading pressure of the hoisting equipment's power system, converting the current loading pressure into an electrical signal, and directly conveying the signal to ECU of an engine through a circuit; and 2) according to the electrical signal, outputting an engine speed matching with the current loading pressure. According to the method, the current loading pressure is transferred the engine ECU in the form of the electric signal, the mode and time for transferring an external load signal to the engine are changed, the time required for signal transmission is reduced, and the engine can rapidly response in advance. Thus, flameout caused by too much sudden fall of the engine speed can be avoided when the pressure load suddenly increases, thus effectively improving the power adaptability of engine under a low speed condition. The invention also discloses a power control system for hoisting equipment.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a power control method and a power control system for lifting equipment. Background technique [0002] The power system of lifting equipment usually includes a power unit and a hydraulic system, wherein the power unit includes an engine, a gearbox and a power take-off, and the hydraulic system includes a hydraulic pump, a hydraulic valve and a hydraulic motor. [0003] During the working process, the engine in the power unit provides the original power, the power take-off and the gearbox transmit the power of the engine to the hydraulic pump, and the hydraulic pump provides hydraulic power. When the operator operates the hydraulic handle to issue a hoisting command, the opening signal of the handle is first transmitted to the hydraulic valve, and the hydraulic valve distributes the hydraulic oil flow provided by the hydraulic pump according to the opening signal, so...

Claims

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Application Information

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IPC IPC(8): B66C13/20
CPCB66C13/20
Inventor 李尧金钊杨拴宝
Owner WEICHAI POWER CO LTD
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