What effect can a swinging load have on an excavator? ​

What effect can a swinging load have on an excavator?

In the field of engineering construction, excavators in construction machinery are core equipment, especially long boom mini excavator and long boom excavator. Due to its wide range of operations, it is often used in scenarios such as deep foundation pits and high-altitude operations. However, during operation, swinging load is a common problem. It not only affects the working efficiency but may also cause damage to multiple components of the excavator and even lead to safety accidents. The following will conduct a detailed analysis of the specific impact of swing loads on excavators from multiple dimensions The focus is on excavator boom (excavator boom), excavator stick and boom (excavator boom and boom), excavator boom and arm (excavator boom and boom), and dipper arm Youdaoplaceholder0 (bucket arm excavator) and other core components unfold.

1. The serious threat of swinging loads to the structural safety of excavators

The impact force generated by the swinging load will directly act on the core structure of the excavator, and the first to be affected is excavator boom. For the long boom mini excavator, its excavator boom and arm lengths are longer, and the torque brought by the swinging load is greater, which is prone to cause the excavator boom to bend and deform, and even crack. At the connection part of excavator stick and boom, the swinging load will accelerate the wear of the pin shaft and bushing, destroy the stability of the connection. If ignored for a long time, it may cause a serious safety hazard of excavator stick and boom separation.

Meanwhile, the dipper arm excavator, as a key component for carrying loads, is prone to fatigue damage at the root under the repeated action of swinging loads. For engineering machinery such as excavator with extended boom, the structural stress caused by the swing load increases exponentially due to the increased boom length and the lever arm. It further increases the risk of excavator boom breakage and boom deformation, posing a great threat to the safety of operators and the surrounding environment.

2. oscillating loads accelerate the wear and tear of the core components of excavators

In addition to structural safety, swinging loads will also accelerate the wear and tear of multiple core components of excavators and shorten the service life of the equipment. In the hydraulic system of excavator boom, swinging loads can cause frequent fluctuations in hydraulic oil pressure, impacting hydraulic cylinders and hydraulic valve groups. For long boom mini excavator, its hydraulic pipeline is longer. The impact caused by pressure fluctuations is more likely to cause pipeline leakage or damage to cylinder seals, thereby affecting the normal expansion and contraction of excavator boom and arm.

The hydraulic cylinder between excavator stick and boom is the key to power transmission. The swinging load will subject the piston rod of the cylinder to additional lateral force, accelerating the wear and bending of the piston rod, resulting in sluggish or jammed movement of the cylinder. Furthermore, under the swinging load, the slewing mechanism of dipper arm excavator will experience overload operation, and the raceways and rolling elements of the slewing bearing will wear out more rapidly. This not only increases the maintenance cost of the equipment, but also may cause sudden slewing failure during operation, affecting the construction progress. For long boom excavator, since the overall weight distribution is greatly affected by the length of excavator boom, the swinging load will also cause uneven force distribution on the chassis tracks or tires, accelerating the wear and tear of the traveling components.

3. swinging loads reduce the operational efficiency and accuracy of excavators

In the actual construction process, the swinging load will seriously affect the working efficiency and operational accuracy of the excavator. For scenarios that require precise operations, such as pipeline laying, foundation pit trimming, etc., the bucket rods of dipper arm excavator will show unstable shaking under the swinging load. Operators need to spend more time adjusting the movements, resulting in an extended single operation cycle and a decrease in overall construction efficiency. long boom mini excavator is often used for operations in narrow Spaces. Swinging the load not only limits its working range, but also may collide with surrounding buildings or pipelines due to shaking, increasing the construction risk.

During earthwork excavation, material handling and other operations, the swinging load can cause the materials in the bucket to spill, requiring repeated operations to complete the expected workload and further reducing the operation efficiency. For excavator with extended boom, its excavator boom is longer, the shaking amplitude caused by the swinging load is greater, and the impact on the operation accuracy is more obvious. Especially during high-altitude hoisting or precise positioning operations, it may cause the hoisting materials to deviate from the predetermined position and delay the construction progress. It may even cause damage to the materials.

4. The operational difficulty and safety risks posed by swinging loads to excavator operators

Swinging loads will significantly increase the operational difficulty for excavator operators and raise safety risks at the same time. When dealing with the swinging load, the operator needs to frequently adjust the operating handle to control the actions of excavator boom, excavator stick and boom to stabilize the load. This not only increases the labor intensity of the operator, but also easily causes safety accidents due to operational errors. For inexperienced operators, in the face of swinging loads of long boom excavator or long boom mini excavator, it is more difficult to precisely control the equipment, which may cause the load to collide with other construction machinery or construction workers.

In addition, the equipment vibration caused by swinging loads can affect the operational stability of operators. Working in a vibrating environment for a long time may also cause harm to the physical health of operators. When working on steep slopes or uneven ground, the swinging load will increase the tilting risk of the excavator. If the load borne by excavator boom and arm exceeds the rated range of the equipment, it may cause the excavator to overturn, resulting in serious consequences such as casualties and equipment damage.

5. How to Alleviate the Adverse Effects of swinging Loads on Excavators

To address the adverse effects of swinging loads, measures can be taken from three aspects: equipment selection, operation norms, and maintenance. When selecting equipment, choose long boom mini excavator or excavator with extended boom reasonably according to the operation requirements to avoid the intensification of swing load caused by the mismatch between the equipment arm length and the operation load. During the operation process, the operator must strictly abide by the operating procedures, control the action speed of excavator boom, excavator stick and boom, avoid sudden acceleration and sudden steering, and reduce the generation of swing load.

Regular maintenance of the excavator is also crucial. Focus on inspecting the connection parts of excavator boom and arm, the hydraulic system and the slewing mechanism. Replace worn pins, bushings and seals in time to ensure that all components of dipper arm excavator are in good working condition. Meanwhile, for engineering machinery such as long boom excavator, load stabilization devices can be installed to suppress swing loads through hydraulic systems or electronic control systems, thereby enhancing the operational stability and safety of the equipment and reducing the adverse effects of swing loads on excavators. Extend the service life of equipment and ensure construction safety and efficiency.