Driving and energy recovery system for hybrid excavator

An energy recovery, hybrid technology, applied in hybrid vehicles, earthmovers/shovels, motor vehicles, etc., can solve the problems of difficult installation of components and the inability to release the stored energy, so as to reduce energy conversion. Links, improve recycling efficiency, good effect of energy saving

Active Publication Date: 2011-02-16
SUNWARD INTELLIGENT EQUIP CO LTD
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Problems solved by technology

[0004] The above-mentioned patents have made useful explorations from the structure of the hybrid power system and the energy recovery method of the working device, but there are also some deficiencies: (1) Patent CN101037869A uses a power distributor to realize power generation/electric motor and hydraulic pressure in the driving mode of hybrid power. The parallel connection of pumps makes the installation of components more difficult due to the limited installation space of construction ma

Method used

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  • Driving and energy recovery system for hybrid excavator
  • Driving and energy recovery system for hybrid excavator

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Embodiment 1

[0019] Such as figure 1 , This embodiment includes engine 1, drive motor 2, recovery motor 11, rotary motor 15, main variable pump 3, auxiliary variable pump 12, vehicle controller 18, motor controller 16, energy storage element 17, reducer 14, Slewing platform 13, recovery motor 10, bucket cylinder 6, arm cylinder 7, boom cylinder 8, left travel motor 4, one-way valve 9, right travel motor 5, main valve 19, etc. The interconnection relationship is as follows:

[0020] The engine 1, the drive motor 2 and the main variable pump 3 are connected in turn; the inlet of the main variable pump 3 is connected to the oil tank, and the outlet is divided into two ways: the first way is connected to the main valve 19 leading to the actuator, and the second way is connected to the auxiliary variable pump 12 Export; the motor controller is connected to five devices, the first is the drive motor 2, the second is the rotary motor 15, the third is the recovery motor 11, the fourth is the vehicle...

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Abstract

The invention discloses a driving and energy recovery system for a hybrid excavator, which is characterized in that a master valve, an engine, a master variable pump, a recovery motor, an auxiliary variable pump, a motor controller and an energy storage element are all connected with a hybrid control unit; the hybrid control unit is also provided with an operating signal input interface and a pressure feedback signal input interface; and a driving motor, a recovery motor, a turning motor and the energy storage element are all connected with the motor controller. The driving and energy recovery system for the hybrid excavator can recover energy comprehensively, has good energy-saving effect and can not affect the stable operation of the engine.

Description

Technical field [0001] The invention relates to an engineering machinery hybrid power system characterized by mechatronics-hydraulic integration technology, in particular to a hybrid power excavator drive and energy recovery system. technical background [0002] As we all know, the existing hydraulic excavator is widely used, and at the same time it has the shortcomings of high fuel consumption and poor emission, so the energy-saving research of hydraulic excavator has very important practical significance. At present, hybrid excavators are recognized as the most promising energy-saving solution, so the development of relevant research is of great significance to the mature application of hybrid technology. [0003] At present, some domestic enterprises and scientific research institutes have also begun the related research of construction machinery hybrid power, and have achieved some phased results, mainly: (1) As disclosed in the patent publication number CN101037869A: hybrid co...

Claims

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Application Information

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IPC IPC(8): B60W20/00E02F9/22
CPCE02F9/2075E02F9/2242E02F9/2292E02F9/2217E02F9/2296
Inventor 何清华张大庆刘心昊刘昌盛赵喻明龚俊王高龙徐波付静
Owner SUNWARD INTELLIGENT EQUIP CO LTD
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