Automobile crane and energy-saving control method and energy-saving control system thereof

An energy-saving control system, a technology for truck cranes, applied in cranes, engine control, mechanical equipment, etc., can solve problems such as energy waste, difficult engine power matching and balance, and inability to guarantee crane work, etc., to achieve energy-saving goals and ensure operation requirements. Effect

CN101993006BActive Publication Date: 2012-07-04SANY AUTOMOBILE HOISTING MACHINERY
0 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-07-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an energy-saving control system and an energy-saving control method for an automobile crane. The energy-saving control method comprises the following steps of: providing the flow required by a hydraulic system of the automobile crane through a handle and detecting the load pressure of the hydraulic system through a pressure sensor; calculating or searching the minimum value of oil consumption in unit time of the engine under the current load within the set change range of the current rotating speed by utilizing an energy-saving algorithm module; and adjusting the engine to rotate at a rotating speed corresponding to the minimum value of the oil consumption in unit time, and adjusting a variable displacement pump of the hydraulic system to have the displacement matched with the rotating speed. The invention also discloses an automobile crane with the energy-saving control system. In the invention, the handle directly corresponds to the flow of the hydraulic system, and the joint control of the rotating speed of the engine and the displacement of the variable displacement pump is realized.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a truck crane, in particular to an energy-saving control method and an energy-saving control system for the truck crane. Background technique

[0002] With the increasing shortage of oil resources in the world, the use of energy-saving technology for construction machinery has gradually become a must for the construction machinery industry. Moreover, the fuel consumption of the engine has become a very important economic index for the evaluation of the energy saving effect.

[0003] Due to the complex working conditions of truck cranes, it is difficult to apply energy-saving technology. The current energy-saving operation method is as follows: the displacement of the variable pump is controlled by the handle and the engine speed is controlled by the throttle. The two cooperate with each other to achieve energy-saving operation.

[0004] The traditional energy-saving operation method of truck cranes, in which the throttle contr...

Examples

Embodiment Construction

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0024] figure 1 It shows the functional block diagram of the energy-saving control system of the truck crane according to the present invention. Such as figure 1 As shown, the flow demand signal is given by the handle, and the flow demand signal is sent to the controller. At the same time, the controller obtains the load under the load according to the flow demand signal and the load pressure signal detected by the pressure sensor by the energy-saving algorithm module combined with the principle of power matching. The optimal speed of the engine and the displacement of the variable pump matching the optimal speed.

[0025] The speed of the mechanical action of the crane is determined by the flow rate of the hydraulic system. The operator manipulat...