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Umbrella handle anchor (J-type anchor bolt/umbrella handle embedded bolt)
The umbrella handle anchor is named because the end of the bolt is a J-shaped hook (similar to the umbrella handle). It consists of a threaded rod and a J-shaped hook. The hook part is completely embedded in the concrete to provide pull-out resistance.
Description
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Product definition and structure
The umbrella handle anchor is named because the end of the bolt is a J-shaped hook (similar to the umbrella handle). It consists of a threaded rod and a J-shaped hook. The hook part is completely embedded in the concrete to provide pull-out resistance.
Core materials and characteristics
Material: Q235 carbon steel (conventional), Q345 alloy steel (high strength), surface galvanized or phosphating.
Features:
Flexible pre-embedding: The length of the hook can be customized to meet different burial depth requirements;
Economical efficiency: Simple processing, lower cost than welded plate anchors;
Corrosion resistance: The galvanized layer can resist general corrosion and has a service life of more than 10 years.
Functions and applicable scenarios
Functions:
Fix small and medium-sized steel structures, street lamp posts, and small machinery;
Suitable for temporary or semi-permanent installation, easy to disassemble.
Scenario:
Municipal street lamps, billboards, agricultural equipment, small factories.
Installation and maintenance
Installation:
Drill a hole in the concrete foundation, insert the umbrella handle anchor and pour it;
When installing the equipment, tighten it with a nut, and the direction of the hook must be consistent with the direction of force.
Maintenance: Avoid deformation of the bolts caused by over-tightening, and regularly check whether the concrete is cracked.
Purchase suggestions
Select the hook length according to the embedded depth (e.g. if the embedded depth is 300mm, the hook length can be 200mm);
It is recommended to choose hot-dip galvanized material in high humidity environment, and the salt spray test needs to be more than 72 hours.
Comparison and selection guide of three major anchors
| Type | 7-shaped anchor | Welding plate anchor | Umbrella handle anchor |
| Core advantages | Standardization, low cost | High load-bearing capacity, vibration resistance | Flexible embedding, economy |
| Applicable load | 1-5 tons | 5-50 tons | 1-3 tons |
| Typical scenarios | Street lights, light steel structures | Bridges, heavy equipment | Temporary buildings, small machinery |
| Installation method | Embedding + nut fastening | Embedding + welding pad | Embedding + nut fastening |
| Corrosion resistance level | Electrogalvanizing (conventional) | Hot-dip galvanizing + painting (high corrosion resistance) | Galvanizing (ordinary) |
Selection suggestions:
Economic needs: Umbrella handle anchors are preferred, taking into account both cost and function;
High stability needs: Welded plate anchors are the first choice for heavy equipment;
Standardized scenarios: 7-shaped anchors are suitable for most conventional fixing needs.
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