Elevator railing expansion screws, also known as elevator geckos or elevator expansion screws, are a special type of threaded connector specifically designed for the elevator installation accessories industry. The following is a detailed introduction to the expansion screws of elevator railings:
1, Definition and Composition
Expansion screws, as the name suggests, achieve a strong fixing effect through the frictional force generated by expansion. The expansion screw for elevator railings consists of countersunk bolts, expansion tubes, flat washers, spring washers, and hex nuts. After the screw is inserted into the preset hole, the expansion tube will expand and tightly fit the hole wall, thereby firmly fixing the elevator railing and other components.
2, Characteristics and Applications
• Features:
Seismic resistance and durability: The expansion screws of elevator railings have reliable post expansion function, which can withstand large vibrations and loads, ensuring the stability and safety of elevator railings.
• Quick assembly: Easy and fast installation, saving installation time and labor costs.
• Strong fastening force: Using thickened sleeves and enlarged flat pads, it has strong fastening force and is suitable for heavy-duty facilities.
• Purpose: Mainly used for fixing elevator tracks, brackets, racks, elevator railings and other components to ensure the stability and safety of the elevator system.
3, Specifications and Selection
There are various specifications for elevator railing expansion screws to choose from, such as M8, M10, M12, etc. The specific specifications should be determined according to the installation environment and usage requirements. When choosing, it is important to pay attention to the following points:
• Substrate type: Expansion screws are suitable for substrates such as concrete and dense natural stone, ensuring that the screws can be firmly fixed to the substrate.
• Tension value: Select expansion screws with appropriate tension values according to the installation environment and usage requirements to ensure the reliability and safety of the connection.
Product quality: Choose reliable and reputable brands and products to ensure the performance and service life of expansion screws.
4, Installation precautions
When installing expansion screws for elevator railings, the following points should be noted:
Drilling requirements: Use a suitable drill bit to drill the hole, ensuring that the depth and diameter of the hole meet the requirements of the expansion screw. The drilling should be perpendicular to the surface of the substrate to avoid tilting or offsetting.
Clean up debris in the hole: Before installing the expansion screw, clean up any dust, powder, or other debris in the hole to ensure that the screw can expand smoothly and fit tightly against the hole wall.
Tightening force: When using tools such as wrenches to tighten expansion screws, attention should be paid to moderate force to avoid excessive tightening that may cause screw breakage or substrate damage.
5, Maintenance and Inspection
To ensure the stability and safety of the expansion screws on the elevator railing, regular maintenance and inspection are necessary. The inspection includes checking whether the screws are loose, whether the expansion tube is deformed or damaged, etc. If any abnormal situation is found, it should be repaired or replaced in a timely manner.
In summary, expansion screws for elevator railings are an indispensable part of elevator installation accessories, with characteristics such as earthquake resistance, durability, and quick assembly. When selecting and installing, comprehensive consideration and selection should be made based on the actual situation to ensure the reliability of the connection
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