Top burst screw, also known as top burst expansion screw or ceiling expansion bolt, is a special type of expansion screw that plays an important role in various installation scenarios due to its unique structure and performance. The following provides a detailed introduction from the structure, principle, characteristics, usage scenarios, usage methods, and precautions:
Structure: mainly composed of casing, expansion tube, screw, nut, and gasket. The casing is cylindrical in shape, with a closed bottom and an open top; The expansion tube is placed inside the casing, and the screw penetrates through it. The top of the screw is flat or cross shaped, which is easy to use tools to twist, and the bottom has a conical structure; Nuts and washers are used to secure objects.
Working principle: First, drill a hole on the installation base, insert the top burst screw into the hole, use a tool to twist the screw, and the screw moves upward. The cone at the bottom gradually expands the expansion tube. Due to the closed bottom of the casing, the expansion tube can only expand outwards, tightly squeezing the hole wall, thereby generating strong friction and anchoring force, firmly fixing the object on the base.
• Characteristics
Strong anchoring force: The special structure allows it to have a larger contact area with the hole wall after expansion, and the anchoring force is stronger than ordinary expansion screws, making it suitable for hanging heavier objects.
Efficient installation: The operation is relatively simple, and tightening the screw can complete the expansion fixation, which can effectively improve the construction efficiency.
Good concealment: After installation, the sleeve is left in the hole, and the appearance is relatively clean, suitable for installation scenarios that require aesthetics.
High stability: It can maintain a good fixing effect even under high tension and vibration, and the connection is stable and reliable.
• Usage scenarios
Decoration and renovation: commonly used for installing ceiling joists, chandeliers, large decorative paintings, etc., to ensure the safety and stability of decorative components.
Home installation: Suitable for fixing heavy furniture, such as large wardrobes, bookcases, etc., to ensure safe use of furniture.
Engineering construction: It can provide reliable support and fixation for equipment and components in mechanical and electrical equipment installation, pipeline fixation, and other engineering projects.
• Instructions for use
1. Measurement and positioning: According to installation requirements, use measuring tools to accurately mark the drilling points at the installation position.
2. Drilling: Select a drill bit that is compatible with the specifications of the top burst screw, drill vertically at the marked point, and the hole depth should be slightly greater than the length of the top burst screw to ensure that the screw can be fully inserted.
3. Screw insertion: Place the top burst screw as a whole into the drilled hole, ensuring that the sleeve is tightly attached to the hole wall.
4. Fixing objects: Place the object to be fixed on the screw, place the gasket and nut in sequence, use a wrench or power tool to tighten the nut, and as the screw moves up, the expansion tube expands to complete the fixation.
• Precautions
Specification matching: Based on the weight, size, and material of the installation object, select the appropriate specifications for the top burst screw to ensure its load-bearing capacity meets the requirements.
Quality inspection: Before installation, carefully inspect all components of the top burst screw. If any deformation or damage to the screw or expansion tube is found, it should be replaced in a timely manner to avoid affecting the fixing effect.
Control force: When tightening the nut, avoid excessive force that may cause the screw to break or the tube to expand excessively, which may damage the substrate; We cannot use insufficient force, otherwise we cannot achieve a good fixing effect.
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