Energy-saving control system of hydraulic movable arm loop

An energy-saving control system and boom technology, which is applied in the field of hydraulic systems, can solve the problems of heating components, easy damage, and low energy utilization of hydraulic excavators, and achieve high-efficiency recovery, good energy-saving effects, and high-efficiency energy

Active Publication Date: 2013-06-12
NANJING UNIV OF TECH
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Problems solved by technology

[0003] At present, in the field of construction machinery, excavators are widely used, but the energy utilization rate of hydraulic excavators is relatively low. In the two processes of extending and retracting the hydraulic boom, hydraulic pumps are required to drive, and the gravitational potential energy of the hydraulic boom Without efficient recovery, most of the hydraulic energy is consumed on the throttle port of the multi-way valve, and part of it is converted into heat energy, which makes the components heat up and is easily damaged

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  • Energy-saving control system of hydraulic movable arm loop
  • Energy-saving control system of hydraulic movable arm loop
  • Energy-saving control system of hydraulic movable arm loop

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specific Embodiment

[0023] Such as figure 1 As shown, this embodiment discloses an energy-saving control system for the arm circuit of a hydraulic excavator, including hydraulic pumps 2, 14, multi-way valves 3, 10, hydraulic cylinder 5, airbag accumulator 9, hydraulic motor 19 and other Hydraulic control components and actuators. In the control system, a speed sensor 6 is provided to detect the lowering speed of the boom, a displacement sensor 7 is used to detect the lowering displacement of the boom, and a pressure sensor 11 is used to detect the output pressure of the hydraulic pump 14 .

[0024] There is a controller 8 in the loop. The controller 8 receives the signals sent by the sensors 6, 7, 11, outputs the processed signals, and sends the output signals to the multi-way valves 3, 10 to ensure the normal operation of the loop.

[0025] The oil tank 1 includes an oil outlet 1b, an oil return port 1a, 1d and a bypass safety oil port 1c. The hydraulic pump 2 is the main hydraulic control ele...

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Abstract

The invention discloses an energy-saving control system of a hydraulic movable arm loop, which comprises a first oil tank, a first hydraulic pump, a first multi-way valve, a hydraulic cylinder, a hydraulic motor, an electric generator, a storage battery, a second oil tank, a motor and a second hydraulic pump connected with the second oil tank. When a hydraulic rod of the hydraulic cylinder is retracted, hydraulic oil in a rodless cavity of the hydraulic cylinder charges and stores energy for the storage battery through the hydraulic motor, and when the hydraulic rod stretches out, the storage battery is connected with the motor, and hydraulic oil in the second oil tank is charged into the rodless cavity of the hydraulic cylinder. The energy-saving control system has the advantages that the running state of the loop is monitored in real time through a sensor, energy is efficiently recycled, the recycled energy is effectively utilized, and the energy-saving effect is good.

Description

technical field [0001] The invention relates to a hydraulic system in the technical field of engineering machinery energy saving, in particular to a hydraulic boom circuit energy-saving control system that can be applied to multiple fields of hydraulic machinery. Background technique [0002] At present, various hydraulic devices are widely used in the field of construction machinery, among which the hydraulic boom is particularly widely used, and the hydraulic boom uses hydraulic drive to reciprocate to realize the work of construction machinery. [0003] At present, in the field of construction machinery, excavators are widely used, but the energy utilization rate of hydraulic excavators is relatively low. In the two processes of extending and retracting the hydraulic boom, hydraulic pumps are required to drive, and the gravitational potential energy of the hydraulic boom Without efficient recovery, most of the hydraulic energy is consumed on the throttle port of the multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/02F15B1/02
Inventor 袁祖强袁峰峰殷晨波高俊庭叶仪
Owner NANJING UNIV OF TECH
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