The invention relates to the field of hydraulic energy conservation of engineering machinery, in particular to a built-in horizontally distributed hydraulic energy storage device of an excavator
That not only causes huge energy loss but also increases the hydraulic oil temperature rapidly, the cooling device should be added to lower the temperature which further
Falling gravitational potential energy and swing braking kinetic energy of the hydraulic excavation are converted into the heat energy of the oil in the form of throttling and overflow, which
To meet the tighter emission standard of the diesel engine and save energy, various energy recovery and utilization systems (ERUSs) of excavator boom began to be
The closed circuit GPE regeneration system [GPERS] associated with the boom of excavator is proposed by Chen et al. [21] which employ a hydraulic accumulator as main
Taking the "Truck Loading" working condition of a Volvo 30-ton excavator as an example, potential energy accounts for 18% of the total machine energy consumption during the arm
In order to address these issues, a hydraulic excavator energy saving system based on a three-chamber accumulator is proposed. Firstly, the conventional piston-type
When the hydraulic excavator works, its boom lifts and lowers frequently. During the lowering process, a large amount of working device''s gravitational potential energy accumulated during
A test rig with a 6-ton hydraulic excavator was built up and used to validate the proposed scheme. The energy consumption characteristics of the electro-hydraulic power
Recent research on new energy storage types as well as important advances and developments in energy storage, are also included throughout.
The invention relates to an excavator movable arm energy-saving device based on a sliding pair and gas energy storage and a working method, which are particularly suitable for hydraulic
In this paper, a novel series hybrid hydraulic excavator based on electro-hydraulic composite energy storage, which provides the average power
In essence, these energy storage devices ensure the excavator operates smoothly and effectively under varying loads and conditions,
The invention relates to an energy-saving excavator, and belongs to the field of engineering machinery. The excavator comprises an engine and a hydraulic pump. A hydraulic pressure
First, potential recoverable energy sources in excavator mechanisms are analyzed. Next, energy regeneration systems are classified according to energy storage
An energy storage device refers to a device used to store energy in various forms such as supercapacitors, batteries, and thermal energy storage systems. It plays a crucial role in
As the photovoltaic (PV) industry continues to evolve, advancements in Excavator energy storage device manufacturer have become critical to optimizing the utilization of renewable energy
Thus, it is considered that energy saving may be attained by storing excess energy by using an energy storage device, such as an accumulator, and utilize the stored energy when it is needed.
Using Amesim simulation software to verify the feasibility of the boom potential energy recovery system through simulation is helpful for proposing energy recovery methods
EERS is a system that transforms the recoverable energy of excavators into electrical energy using a hydraulic motor-generator, which is then stored in an energy storage
An accumulator is a device used for storage of energy in an excavator, also known as a digger or earthmover. It acts as a battery, storing energy to be used later in the operation of the machine.
EERS is a system that transforms the recoverable energy of excavators into electrical energy using a hydraulic motor-generator, which is then stored in an energy storage
A hydraulic excavator (HE) is a typical piece of construction equipment and is widely used in various construction fields. However, the poor
However, the amount of this energy is not large, and the research is focused on regenerative braking of the swivel part. In the case of the Komatsu hybrid excavator, the
Abstract The working device weight of hydraulic excavators far exceeds that of its lifted material, requiring a large amount of energy to maintain the frequent motion of lifting and
However, using a single storage device is difficult to meet the need for energy recuperation as well as performance satisfaction of excavators. Some researches combine two
Implementing an energy recovery system (ERS) is an effective solution to improve energy efficiency for hydraulic excavators (HEs). A flywheel
The hydraulic accumulator has the advantages of high power density, fast response, stable operation and high cost performance. However, compared with the electric
The invention provides an energy storage hydraulic system and an excavator using the same and belongs to the technical field of engineering machinery manufacture. The energy storage
Among the energy storage types, much research is ongoing into various aspects of electrochemical energy storage, focused on introducing new storage materials and
Next, energy regeneration systems are classified according to energy storage devices and their development is comprehensively reviewed through the state-of-art. The
The regeneration system always requires at least one energy storage device. However, using a single storage device is difficult to meet the need for energy recuperation as well as performance satisfaction of excavators. Some researches combine two independent energy storage devices to form a combined energy storage system.
First, potential recoverable energy sources in excavator mechanisms are analyzed. Next, energy regeneration systems are classified according to energy storage devices and their development is comprehensively reviewed through the state-of-art.
Firstly, the original battery of the electric excavator is used to recover the gravity potential energy of the boom. Secondly, accumulators with high power density are used as auxiliary energy storage elements.
In order to address these issues, a hydraulic excavator energy saving system based on a three-chamber accumulator is proposed. Firstly, the conventional piston-type hydraulic accumulator is integrated with the hydraulic cylinder to form a three-chamber accumulator, which has a pressurizing function during energy storage.
However, the following problems generally exist in hydraulic excavators using electric energy storage to recover energy [ 16, 17, 18 ]: high energy density but low power density; low power density; large weight and volume; and the inability to charge and discharge in a short time.
To verify the effectiveness of this system, a real test bench based on a 6-ton hydraulic excavator was performed. The experimental results showed that 50.1% energy consumption of the boom and 64.9% peak power of the power source can be reduced in the proposed system compared with the double-chamber system.
