The frame is designed as a traveling platform for a concrete pump, not as a lifting crane. The production process requires the concrete pump to move along the pipe molds and deliver concrete at each station. There is no need to lift loads, so a hoist would add cost and complexity without benefit. By removing the hoist and electric hoist, the frame is simpler, lighter, and easier to maintain. The only working motion is long travel at 2.0–20 m/min.

The 6.5 m track gauge is the distance between the ground-level rail and the center of the upper travel beam support. It determines the width of the frame and the coverage of the production bed below. For a pipe production workshop, this gauge is matched to the width of the casting beds and the positions of the molds. The frame travels along the runway at this gauge, positioning the concrete pump over the correct casting station. The gauge is 6,500 ± 6 mm, which gives the frame a stable footprint and keeps the pump aligned with the production line.

The 6 m electric trailer concrete pump (拖泵 / trailer pump) is a concrete pump unit mounted on top of the semi-gantry frame. The pump is about 6 m long and is driven by an electric motor. It delivers concrete through a pressure pipe to the molds on the production bed. As the frame travels along the runway, the pump moves with it to each casting station. The pump is supplied separately and mounted on the frame by others. The frame is designed to carry the pump weight and provide a stable platform during travel and pumping.

BMGO = semi-gantry frame. "14t" = nominal load (the frame structure and its travel system are rated for this load). "6.5m" = track gauge. "5m" = reference height dimension on the drawing. "A7" = ISO A7 duty class. A7 is a heavy duty class for continuous work, which matches the continuous operation of a pipe production workshop.

P38 rail is a standard rail profile used for cranes and traveling equipment. It is matched to the 108.3 kN maximum wheel load and the travel speed of this frame. P38 rail is commonly used in industrial workshops because it is easy to install, readily available, and provides a durable running surface for the wheels. For a production workshop with a fixed runway, P38 rail is a good balance of cost and performance.

The material height of about 4 m below the frame is the clearance between the top of the material (pipes, molds, and concrete) and the bottom of the frame structure. This clearance is set by the rail top distance from the ground, which is designed so the frame and its mounted pump can travel over the production bed without hitting the material. In a pipe production workshop, the pipes and molds can be tall, so this clearance is important for safe travel. The exact value is set by the rail top height, which is fixed by the building structure and the design of the production bed.

This semi-gantry frame runs on 3-phase, 575 V, 60 Hz. This covers the 2 × 2.2 kW long travel motors and the control system. The concrete pump mounted on the frame may have its own power supply and control system, depending on the pump model. If your site uses a different voltage or frequency, Yuantai can supply the frame with a custom power supply to match your local grid.