In demanding demolition and rock-breaking applications, a hydraulic breaker must deliver powerful impact while minimizing stress on the excavator’s hydraulic system. This balance between performance, durability, and operating cost is at the heart of METDEEM’s product development. By combining reliable engineering with practical jobsite needs, Máy phá thủy lực METDEEM are designed to absorb hydraulic pulsations, improve impact efficiency, and help customers reduce long-term maintenance risks.
In this article, we explore one of the key components behind this performance—the hydraulic breaker accumulator—and explain how it protects equipment while enhancing productivity.
The Hidden Damage Caused by Crushing Operations to Excavators
In the foreign market, excavators are among the most expensive assets for contractors. When installing Hydraulic breakers for high-intensity crushing operations, many customers often encounter a common concern: the long-term damage that the Hydraulic breakers cause to the hydraulic system of the excavator.
- High-load operation: The breaker hammer requires the excavator to provide higher hydraulic pressure and flow, keeping the hydraulic pump in a high-load state for a long time.
- Hydraulic pulsation impact: The intermittent strikes of the breaker hammer will cause intense pressure fluctuations in the oil circuit. This impact will repeatedly strike the hydraulic pump, accelerating its wear and aging.
- High maintenance cost: The cost of replacing the main pump of the excavator is often several thousand to tens of thousands of dollars, and the downtime is also long.
In the foreign market, the cycle for obtaining equipment maintenance parts is long. Once the hydraulic pump is damaged, not only will there be high repair costs, but also project delays will occur due to the shutdown. How to effectively protect the hydraulic system of the excavator has become one of the core issues that crusher users are most concerned about.
What is a accumulator? – A protective device for the breaker hammer
The accumulator is a leather air bladder installed on the Hydraulic breaker. It is filled with nitrogen. One end of the accumulator is directly connected to the oil circuit inside the Hydraulic breaker, enabling it to respond immediately to the pressure fluctuations in the oil circuit during the operation of the Hydraulic breaker.
Why is nitrogen chosen? Nitrogen is an inert gas with stable properties. It does not react chemically with hydraulic oil and its volume is not greatly affected by temperature changes. This ensures a stable buffering effect under different working conditions.
The Two Core Functions of the Accumulator
Absorbing Hydraulic Pulsations – Protecting the Hydraulic System of the Excavator
When the breaker hammer is in operation, each impact of the piston generates intense pressure fluctuations, forming hydraulic pulses. If these pulses are directly transmitted to the main pump and hydraulic lines of the excavator, over time, they will lead to:
- l Fatigue damage of internal parts of the hydraulic pump
- l Loosening or rupture of oil pipe joints
- l Abnormally elevated temperature of hydraulic oil
The rubber bladder of the accumulator compresses and expands to absorb these pressure fluctuations, making the pressure in the oil circuit more stable and effectively preventing hydraulic pulses from causing damage to the main pump of the excavator. For foreign customers, this means lower maintenance costs and longer equipment lifespan.
Enhance Impact Force – Improve Work Efficiency
Apart from its protective function, the accumulator can also significantly enhance the working performance of the hydraulic breaker:
l Absorb impact force and reduce return oil resistance: The accumulator absorbs the impact and simultaneously reduces the return oil resistance, thereby reducing the resistance for the piston to move downward, thus enhancing the impact force.
l Energy recovery and utilization: When the piston moves upward, the energy absorbed by the accumulator will be replenished to the piston to help it move more quickly, further increasing the impact frequency and intensity.
In simple terms, the accumulator enables each strike of the breaker hammer to be more powerful and faster, thereby enhancing construction efficiency and shortening the construction period.
Actual Differences Between Systems with Accumulators and Those without
To present the value of the accumulator more intuitively, the following table compares the effects of having or not having an accumulator on the breaker hammer and the excavator:
| Comparison Dimension | Without accumulator | With accumulator |
| Hydraulic pulse intensity | Strong, direct impact on hydraulic pump | Weak, absorbed effectively |
| Damage to hydraulic pump | Large, prone to accelerating wear | Small, prolongs pump lifespan |
| Impact force | Trung bình | Increased by 10% – 20% |
| Tần số tác động | Thấp hơn | Higher |
| Hydraulic oil temperature rise | Easy to overheat | Temperature rise more stable |
| Maintenance cost | High (requiring frequent pump maintenance) | Low (longer pump lifespan) |
The accumulator technology of METDEEM
To ensure that customers using the METDEEM breaker can operate with peace of mind, our R&D team has installed a high-performance energy storage device on the breaker. This device not only effectively absorbs hydraulic pulses and protects the hydraulic system of the excavator, but also enhances the impact force and frequency of the breaker, enabling customers to achieve lower operating costs and higher operational efficiency over the long term.
Kết luận
In conclusion, the accumulator plays a vital role in protecting the excavator’s hydraulic system while improving the impact force and operating efficiency of the hydraulic breaker. By integrating a high-performance accumulator into its products, METDEEM helps reduce hydraulic pulsation, extend equipment service life, lower maintenance costs, and support more stable performance in demanding working conditions. Choosing a METDEEM hydraulic breaker means investing not only in powerful breaking performance, but also in long-term reliability, efficiency, and greater value for every project.
Câu hỏi thường gặpS
Q: Does the nitrogen in the accumulator need to be checked regularly?
A: Yes. It is recommended to check the nitrogen pressure in the accumulator once a month. If the pressure is found to be insufficient, it should be replenished promptly.
Q: What would be the symptoms if the accumulator is damaged?
A: If the accumulator is damaged, the hydraulic pump of the excavator will vibrate significantly more, the crushing force will decrease, and the oil temperature will tend to rise.
Q: Will installing accumulators increase fuel consumption?
A: No. On the contrary, because accumulators improve energy utilization, under the same workload, fuel consumption becomes more economical.
