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• Time of issue:2020-10-11 09:50
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(Summary description)The pipe jacking equipment is mainly composed of the back, the cylinder support, the main top cylinder, the main top pump station, the guide rail, the wall water stop, the mud mixing and pressure injection system: 1. Guide rail: The guide rail is made of 16# channel steel, and the lower part is made of 12# channel steel as a support rail. Between the two rows of rail supports, 8# channel steel is used as a horizontal connecting rod to connect the two rows of rail supports. 2. Back: The back is a component used to withstand the recoil force of the main jack cylinder, and evenly transfer the concentrated force from the main jack cylinder to the well wall. The back is made of steel plate, I-beam and concrete, and is installed behind the main top cylinder; 3. Cylinder bracket: The cylinder bracket is a component used to support and fix the main top cylinder, which is made of 12# channel steel; 4. Main jack cylinder: the main jack cylinder is the main equipment for jacking. It is the motive power for the pipe section jacking. It is mounted on the cylinder support and the rear end is close to the back. After the main jack cylinder is installed, use the oil pipeline to connect with the main jack pump station. Console connection; 5. Main top pumping station: The main top pumping station is the equipment for supplying oil to the main top cylinder and returning oil to the main top cylinder. The pumping station is installed next to the working well; 6. Wall-penetrating water-stop: The wall-penetrating water-stop is a component installed between the outer wall of the pipe section and the well wall. Its main function is to prevent the mud and water outside the working well from flowing into the well along the pipe wall during the jacking process; 7. Mud mixing and pressure injection system: The mud mixing and pressure injection system is a general term for the facilities that mix bentonite into a slurry and then transport it to the pipe wall and soil between the pipe wall and the soil. The system is placed next to the main top cylinder. 8. Tool pipe: a. Structure: The tool pipe is the key machine tool for pipe jacking. Its main functions are: tunneling, anti-slump, mud discharge, and guidance. According to the characteristics of the project and the geological conditions, the earth pressure balance tool pipe is selected for this project. The front end of the earth pressure balance tool pipe is a cutting head. Behind the cutting head is a partition, and between the partition and the cutting head is a soil chamber. Behind the partition is the power cabin. There are correction cylinders, hydraulic devices, drive motors and other equipment in the power cabin. b. Working principle: As the tool tube advances, the cutting head moves forward continuously, and the spoil enters the soil tank. The soil tank must maintain a certain pressure so that the cutting head can advance forward under the condition of soil pressure.