High-speed cutting machine construction of metal band saw

　　In order to meet the steel bar construction requirements of my country's railways, highways, construction projects, and residential construction, steel bar processing equipment, led by steel bar straightening and cutting machines, have appeared on the market one after another, and has been favored and affirmed by many companies. With this type of equipment With the continuous improvement of various aspects of performance, what are the advantages of the automated steel cutting machine? First, it can adapt to various types of construction steel bars, including cold-rolled and hot-rolled steel bars, rebars, and steel bars of various diameters. As long as the specification limit is not exceeded, the automatic steel cutting machine can handle it. The second is the strong production function. The processing equipment includes a series of segmented processing equipment for steel bar straightening, cutting, bending, and bending. In these equipments, there are devices that can adjust the welding position and posture, can cut synchronously, and can automatically turn over, and can eliminate the reaction force during the cutting process. The third is that automated program-controlled operations can greatly improve the efficiency of steel welding and ensure the quality of the project. The equipment they developed is high in technology.

　　The main function is to complete the tasks of receiving electric energy, transforming voltage, distributing electric energy, and transmitting electric energy in the building. 1. Load classification and power supply requirements are divided into first-class load, second-class load and third-class load according to the power supply reliability of the electric load and the degree of political impact or economic loss caused by the interruption of power supply. 1) Primary load 2) Secondary load ① Interruption of power supply will cause greater political influence. ② Interruption of power supply will cause greater economic losses. ③ Interruption of power supply will cause disorder in public places. *Generally adopt two-circuit power supply, and two power supply transformers should be selected. When the load is small or the power supply conditions in the area are difficult, it is allowed to supply power by an overhead line of 6kV and above. 3) The third-level load does not belong to the first and second-level loads. The three-stage load has no special requirements for power supply. 2. Voltage selection and power quality 1) Voltage level The rated voltage level of the power grid and electrical equipment specified in my country's standards is: low-voltage distribution voltage should be 220/380.

　　We will use four projects as examples to introduce the application of the geological radar method. 4.1 Project Overview A reservoir with a design area of more than 160km2. The reservoir embankment was completed in 1974, with a total length of 54 kilometers. There are five embankments in the southeast, west and southwest. The joint construction section of the reservoir and the main embankment is about 4km, the starting point of the pile head is about 5+500m, and the end pile head is about 9+500m. About six years after the road was renovated and passed, a vertical crack was found at the junction of the road and the reservoir embankment (the vertical bars are numbered 8+000-9+000). Longitudinal cracks are mainly distributed on the north and south pavement (about 80% of the vertical cracks are pavement cracks), and they often appear in the lane 1.5m away from the edge of the concrete pavement. There are almost no vertical cracks from south to north. The results of the field investigation show that it is necessary to detect ground radar at the 1km point of the 8+000~9+000 highway pile. In order to continuously check the two measurements installed at the top of the 8+000 and 9+000 embankments.

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