As the name suggests, the excavator high reach demolition boom is a tool for demolition. The excavator demolition arm is also called a three-section long reach boom and arm. The three-section long reach boom and arm adds a middle arm to the original two-section long reach boom and arm. The extended distance of the middle arm can protect the safety of the driver to a large extent. The three-section long reach boom and arm works with a hammer or hydraulic shears. The excavator high reach demolition boom is divided into a three-stage demolition arm and a four-stage demolition arm, which are mainly suitable for the demolition of high-rise buildings. The lengthened arm of the three-stage excavator can be extended to (16-38) meters. It is mainly suitable for: dismantling of high-rise buildings and other projects, and can also work in narrow environments.
The excavator high reach demolition boom is also called the excavator demolition arm or the excavator demolition boom, which is mainly suitable for the demolition of high-rise buildings, so that it has high efficiency and good safety. Most of the three-stage demolition booms of excavators of domestic brands are produced, designed and manufactured by sub-factories. These products are non-standard products, and each factory processes and manufactures them according to their own experience and design.
The excavator is equipped with a three-section arm or a multi-section arm (the multi-section arm can be divided into several sections at the boom, and the height can be added or subtracted according to the construction requirements). After that, it is also called a demolition machine or a demolition machine, a house demolition machine, and a demolition machine. It is used in the dismantling and dismantling of houses and high-rise buildings. Such as old commercial buildings, chimneys, viaducts, etc. The demolition height of the excavator modified building demolition machine is proportional to the long reach boom and arm, and is generally made of Q345B material.
Generally speaking, it is recommended to refit excavators with a tonnage of 30 tons or more. The front end of the demolition machine can be equipped with hydraulic shears or breaking hammers. In view of the effective protection of the service life of the machine and the long arm, it is recommended to use hydraulic shears.
Hydraulic Breaker: The breaker generally uses a drill rod diameter of 100-135, and its own weight should not exceed 2 tons. Due to the high noise of the breaker, it is not suitable for long-term construction in densely populated areas, and it is harmful to the demolition machine and the long reach boom and arm itself. The damage is greater.
Hydraulic Shears: According to the tonnage of the excavator and the length of the three-section extended arm, select the hydraulic shear configuration of 10-20 tons, and the self-weight of the hydraulic shears should not exceed 2 tons. The hydraulic scissor arm is made of ultra-hard steel plate, with sharp teeth and large shearing force. The symmetrical movement of the two knife arms realizes efficient operation. It can achieve an opening width of 0-1180mm, and can directly cut cement columns with a diameter of about 80CM and internal steel bars.
Large and medium-sized excavators are equipped with a three-section long reach boom and arm and equipped with hydraulic shears or breakers. According to the length of the three-section long reach boom and arm of 20-30 meters, buildings below 7-12 floors can be directly demolished, which can avoid manual demolition of high-rise buildings.
1) The demolition height of the demolition machine modified by the excavator is the same as the length of the extended arm. Generally speaking, it is not recommended to modify the demolition machine for excavators below 30 tons. The front end of the demolition machine can be equipped with hydraulic shears or breaking hammers. It is recommended to use hydraulic shears for the service life and protection of the machine.
2) Hydraulic shears can choose 360-degree hydraulic rotation and semi-automatic rotation, or you can choose olecranon pliers, which can cut concrete and I-beam in large pieces. The knife arm is made of super-hard steel plate, with sharp teeth and large shearing force; The left and right knife arms are synchronized, and the symmetrical movement of the two knife arms realizes efficient operation, and the opening width of 0-1180mm can be realized.
3) The excavator is refitted with hydraulic shears at the front of the demolition machine, with low noise, high efficiency and low emission. It is suitable for construction in areas with concentrated residents, narrow construction sites and strict noise requirements.