Tips For Using Rebar Bending Machines In Tunnel Construction

The tunnel construction environment is complex, and the precision and efficiency of rebar processing are extremely high. As a key equipment, the operation skills of the rebar bending machine are directly related to the quality and progress of the tunnel project. In addition to the conventional operation points, there are the following special skills for using the rebar bending machine in tunnel construction.

Preparation of rebars and equipment suitable for tunnel construction

Rebar selection confirmation: Tunnel construction usually uses high-strength, corrosion-resistant rebars, such as HRB400E and other earthquake-resistant rebars. Before construction, it is necessary to strictly check the material report and inspection certificate of the rebar to ensure that the quality of the rebar meets the design requirements of the tunnel project to avoid affecting the structural safety due to rebar quality problems.

Equipment adaptability modification: The space in the tunnel is limited, and the rebar bending machine needs to be reasonably modified or a small portable model should be selected according to the actual working space. For example, the control console of the equipment can be remotely extended to facilitate the operator to operate flexibly in a limited space, avoiding the inconvenience and safety hazards caused by the narrow operating space. At the same time, the equipment is sealed and protected to prevent dust, moisture, etc. in the tunnel from corroding the equipment and affecting its normal operation.

Site layout and operation process optimization

Reasonable site planning: The tunnel construction site is narrow, and a special steel bar processing area should be set up near the tunnel entrance or in a spacious area inside the tunnel. The steel bar bending machine and other steel bar processing equipment (such as steel bar cutting machine, straightening machine, etc.) should be reasonably arranged to form a smooth processing line, reduce the distance of steel bar transportation, and improve processing efficiency. At the same time, set up obvious safety warning signs in the processing area, divide the personnel walking channel and material stacking area to ensure safe and orderly construction.

Optimize the operation process: According to the amount and frequency of steel bars used in tunnel construction, formulate a reasonable processing plan. Priority should be given to processing steel bar parts with large usage and tight construction period, such as anchor rods and steel mesh for initial support of tunnels. During the bending process, batch production is adopted to set the bending parameters at one time, continuously bend multiple steel bars, reduce the number of parameter adjustments, and improve production efficiency. At the same time, the bent steel bars are classified and marked for easy transportation and installation.

Safety assurance and maintenance under special environments

Strengthen safety protection: There are problems such as ventilation and lighting in the tunnel. When using the steel bar bending machine, the operator must wear personal protective equipment such as safety helmets, protective gloves, and goggles. At the same time, ensure that the equipment is well grounded and check the electrical circuits regularly to prevent safety accidents caused by leakage. In addition, set up protective railings around the equipment to prevent people from accidentally touching the running parts.

Equipment maintenance and care: The humidity and dust in the tunnel are high, and the maintenance of the steel bar bending machine is particularly important. After work every day, clean the dust and iron filings on the surface of the equipment in time, especially the transmission parts and electrical components. Check the lubrication system of the equipment regularly to ensure that each lubrication point is well lubricated to prevent parts from being worn due to poor lubrication. At the same time, perform regular flaw detection on key components of the equipment (such as the bending center shaft, forming shaft, etc.) to promptly discover potential safety hazards and deal with them.