In scenarios such as forestry production, wood processing, and waste wood recycling, how to efficiently pick up, sort, and load the scattered wood has always been a pain point in the industry. Manual handling is not only physically demanding but also inefficient, making it difficult to meet the requirements of large-scale operations. The wood grabber, as one of the important attachments of excavators, can easily solve these problems. This article will introduce in detail the types, application scenarios, and versatile features of the wood grabber.
Two types of wood-grabbing devices: mechanical type and hydraulic type
The wood-grabbing devices are mainly classified into mechanical type and hydraulic type based on their driving methods. Each type has its own characteristics and is suitable for different working conditions.
Mechanical Wood Grabber
- Working Principle: It directly utilizes the telescopic extension of the existing bucket oil cylinder on the excavator’s small arm to control the opening and closing of the grab blades, without the need for additional oil cylinders and hydraulic pipelines.
- Core Features:
Pure mechanical structure, lower cost
Simple installation, no need to modify the excavator’s oil circuit
Not rotatable, can only place materials by adjusting the body angle of the excavator
- Applicable Scenarios: Budget-limited, low-rotational-function requirements light work conditions, such as small wood storage areas, scattered wood sorting.
Hydraulic Timber Grabber
- Working Principle: Fitted with hydraulic cylinders which can move independently and rotating motors powered by electricity, it moves through the hydraulic pipeline of the excavator to extend and retract the cylinders to accomplish the operation of grabbing and releasing. It can rotate endlessly in 360 degrees.
- Core Features:Strong grasping force, flexible operation 360-degree electric roation, which can be adjusted to the desired direction of material placement.
- Application Scenarios: Large-scale timber handling, crushing of waste wood for material supply, and operations requiring precise placement.
- Flexible and versatile core: The hydraulic wood-grabber, due to its rotational function, can pick up and neatly stack wood from any angle without moving the excavator. This significantly reduces the number ofgrab adjustments and the operation efficiency is over 50% higher than that of the mechanical type.
Flexible Applications of Excavator Wood Grapples
The wood grabber is not only used for handling logs; it plays a significant role in multiple aspects:
Sorting and Stacking of Cut Wood
After the trees are cut down, their branches are scattered on the ground. By using an excavator equipped with a wood-grabber, the scattered wood can be quickly gathered and neatly stacked according to the required arrangement, making it convenient for subsequent packaging or transportation.
Wood Loading onto Trucks
The traditional manual loading process requires the cooperation of multiple people and is both time-consuming and labor-intensive. The wood grabber can directly lift bundled wood and precisely place it into the truck bed. One such device can replace 5 to 6 workers, and the loading speed can be increased by 3 to 5 times.
Discharge of Waste Wood for Crushing
In the waste wood recycling plant, continuous supply of waste wood, branches, etc. is required to the crusher. The wood grabber can continuously grasp the materials and supply them to the crusher in a stable and uniform manner, avoiding equipment blockage caused by uneven feeding by humans. This improves the overall production efficiency of the line.
Other Grabbed Materials
The wood grabber can not only grasp wood, but with slight adjustments, it can also be used to grasp long-shaped materials such as straw, reeds, and bamboo, further expanding the application scope of the excavator.
Widespread Model Compatibility and High Usability
Die grapple developed by METDEEM is highly versatile and can be compatible with the vast majority of mainstream brand excavators on the market, including but not limited to: Caterpillar, Sany, Liugong, XCMG, Kato, Hitachi, Sunward, Zoomlion
- Versatility advantage:All the components of the same type of brush gripper are universal parts, resulting in a low failure rate. Easy for maintenance and repair, with quick access to component supplies. No need to make structural modifications to the excavator; it can be installed and used immediately.
- Efficiency comparison: When it comes to transporting timber manually, each person can handle approximately 1 to 2 tons per hour. However, with an excavator equipped with a timber grab, it can scoop up 10 to 15 tons per hour. The efficiency is 5 to 10 times that of manual labor, and it significantly reduces the risk of workers getting injured.
Chart: Comparison of Mechanical Wood Grabber vs. Hydraulic Wood Grabber
| Comparison Project | Mechanical Wood Grabber | Hydraulic Wood Grabber |
| Driving Method | Utilizes excavating oil cylinder, no additional oil cylinder required | Independent hydraulic cylinder + electric rotating motor |
| Rotational Function | None (requires adjusting the machine body) | 360° continuous rotation |
| Installation Complexity | Simple, no need to add pipelines | Requires adding hydraulic pipelines |
| Cost | Lower | Medium |
| Work Efficiency | Average | High (50% higher than the mechanical type) |
| Applicable Working Conditions | Light-duty, occasional use | Large-scale, continuous operation |
| Recommended Model | Small excavators (under 3 tons) | Medium and large excavators (over 3 tons) |
Schlussfolgerung
Grabbers are a typical example of how excavators can achieve “multi-purpose operation”. Whether it is the mechanical design’s reliability and economy, or the hydraulic system’s flexibility and efficiency, they can enable your excavator to achieve greater value in fields such as forestry, wood processing, and waste material recycling. METDEEM is committed to providing high-quality and highly versatile grabber products for global customers, allowing each excavator to easily handle wood grabbing tasks.
Replace manual labor with mechanical tools to enhance efficiency and reduce costs. METDEEM looks forward to cooperating with you! Kontaktieren Sie uns to explore more。
FAQ (häufig gestellte Fragen)
Frage: My excavator is of the Hitachi 70 model. Can the hydraulic timber grabber of METDEEM be installed on it?
A: OK. METDEEM’s grab tools are compatible with all major brands such as Caterpillar, Shitong, Hitachi, and Liugong. All you need to provide is the model of the excavator and the hydraulic parameters, and we can offer the corresponding connection brackets and pipeline kits. They can be installed and used immediately.
Frage: Which is more durable, the mechanical wood-grabbing device or the hydraulic one?
A: Both are very durable. The mechanical structure is simpler and has fewer failure points; the hydraulic one requires regular maintenance of the hydraulic system due to the presence of a rotating motor and hydraulic cylinders. As long as they are used and maintained according to the specifications, both have a very long service life.
Frage: What else can the grabber be used to grab besides wood?
A: It can also grab various long-shaped or bundled materials such as straw, reeds, bamboo, waste paper bundles, lightweight scrap steel, etc. If you need to grab heavy materials like stones or scrap steel, it is recommended to use dedicated stone grabbers or steel grabbers to ensure safety.
