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How to choose step chain for escalator
2024-12-02
The step chain is an important part of the escalator. It is a traction component composed of several components connected in series in the form of a hinge. The step chain is the traction component of the escalator, connecting the steps and the drive system. The rotation of the chain drives the steps to move, so that the escalator can operate normally.
When selecting an escalator step chain, you need to consider the following core factors:
1. Load and breaking strength: It is necessary to calculate the load and breaking strength of the escalator step chain to ensure that it can withstand the various forces in the operation of the escalator. By calculating the load, breaking strength and pin pressure ratio, the specific selection of the step chain can be determined.
2. Materials and processing technology: Select a step chain with high-quality materials and advanced processing technology, such as a chain with high tensile strength and high fatigue strength, to ensure its durability and safety.
3. Scope of application and precision: The escalator step chain should have high precision and synchronization accuracy to meet the requirements of smooth, safe and reliable operation. The pitch range is usually between 67mm and 136mm, and the breaking load range is between 60kN and 1100kN.
4. Determine the number of step sprockets to be replaced: It is best to calculate according to the entire chain to ensure continuity during replacement.
5. Remove related components: Remove the inner and outer covers and apron plates of the lower straight section to expose the chain section that needs to be replaced.
6. Replace the step chain: Remove the old chain, install the new chain, and adjust the tensioner to ensure the tension of the new chain is appropriate.
7. Test run: After installation, perform a test run to ensure that the escalator runs smoothly and safely.
Through the above steps and methods, you can effectively select and replace the escalator step chain to ensure the safety and smooth operation of the escalator.