Litian Heavy Industry Machinery Co., Ltd.
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TBM Disc Cutter For Rock Breaking
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| Litian heavy industry has a complete technical team of TBM cutting tool developing, design, manufacturing, assembly, debugging, maintenance and renovation, able to provide equipment selection consulting, independent design, development, manufacturing and professional after-sales service, its testing and manufacturing level has been among the world's advanced ranks. We work closely with users to help them improve excavation efficiency and reduce comprehensive cost, and become a reliable partner for users. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Disc Cutter Types
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Assembly process and quality control
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The assembly process is a very important part of disc cutter quality control. For different geology, in addition to the targeted selection of cutters with different properties, the setting of cutter parameters (starting torque, airtight test pressure, etc.) also greatly affects the cutter performance.
Adjustment of bearing preload According to the technical requirements of the bearing TIMKEN manufacturer, to make the bearing reach the rated load carrying capacity, the bearing must be pre-tightened at -0.02 ~ -0.04mm (about 40N-M torque). In order to achieve the designed load-bearing capacity of the cutter, the preload of the bearing must be strictly controlled in hard rock or composite formations (only part of the starting torque of the whole cutter), which is particularly important for hard rock formations. For hard rock geology, our disc cutter reduces the starting torque of the whole tool under the premise of satisfying the preload of the bearing and ensuring the tightness, and try to avoid the uneven wear caused by the cutter not turning due to excessive starting torque.
Airtight test For the groundwater-rich and soft rock zone, the sealing requirements of the cutter are higher, the test pressure is increased to 4Bar, and the time is extended to 30Min. In addition to strictly controlling the starting torque and sealing test of the cutter, we have to check the height of the disc cutter, the welding quality of each welding point, and the tightening degree of each thread after each disc cutter is assembled to ensure the performance of the cutter.
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Cutting Tool Packaging
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Cutters are packed in a solid plywood box, which complies with national packaging regulations. It meets the needs of transportation, handling, moisture-proof, rain-proof, and rust-proof. It can ensure that the goods arrive at the site in a safe and non-destructive manner.
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