Compression Bolt Unit With Elastic Packing for Soft Drilled Holes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bolt units for fixing objects to soft construction structures like asphalt roads are prone to separation due to impact and water leakage, requiring multiple drilled holes and extensive installation time.
Innovation Solution
A multi-purpose bolt unit with a cylindrical body, elastic packing pipe, washers, and compression nut that expands to ensure watertight contact and secure fixation, featuring a fastening screw groove and friction protrusions for enhanced stability and adaptability to varying hole diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple anchor bolts are used to fix objects to drilled holes in soft construction structures, then the objects can be securely fixed, but the structure becomes prone to separation under repeated impact and vibration
Solution Approach 1:
The patent uses an elastic packing pipe (flexible element) that expands to fill the drilled hole, creating a reliable seal and fixation that resists separation under impact and vibration. The flexible nature of the elastic packing pipe allows it to maintain contact and sealing effectiveness under dynamic loading conditions.
Solution Approach 2:
The patent employs a nested structure where the elastic packing pipe is inserted into the cylindrical body, which in turn is inserted into the drilled hole. The compression nut then compresses the elastic packing pipe from the inside, causing it to expand outward and nest tightly within the drilled hole, creating a secure fixation system.
2Ease of operation
If anchor bolts are used in underground parking lots, then objects can be fixed, but water leakage occurs when anchor bolts are pulled out and drilled holes are exposed
Solution Approach 1:
The elastic packing pipe acts as a flexible sealing element that expands to fill the drilled hole completely, preventing water leakage. This flexible seal ensures that even under vibration and impact conditions in underground parking lots, the drilled hole remains sealed and waterproof.
Solution Approach 2:
The patent incorporates the elastic packing pipe and compression nut mechanism to provide beforehand cushioning against water leakage. The expandable sealing structure is pre-installed and activated during the fixation process, creating a protective seal before any potential water intrusion can occur.
3Reliability
If multiple drilled holes are formed to fix objects to soft construction structures, then secure fixation is achieved, but the installation process requires significant time and effort
Solution Approach 1:
The patent merges multiple functions into a single integrated unit: the cylindrical body, elastic packing pipe, washers, and compression nut work together as one assembly. This unified structure achieves secure fixation while simplifying the installation process, as the entire assembly can be installed as a single unit rather than requiring separate operations for multiple anchor bolts.
Solution Approach 2:
The cylindrical body is designed with universal applicability, featuring an outer diameter that can be selected to match various drilled hole diameters. The fastening screw groove and compression nut mechanism provide multi-functional capability for securing different types of objects, reducing the need for multiple specialized fixation devices.
4Productivity
If a single drilled hole is used instead of multiple holes, then installation time is reduced, but fixation reliability and resistance to impact is compromised
Solution Approach 1:
The elastic packing pipe provides flexible, impact-resistant fixation within a single drilled hole. Its expandable nature allows it to maintain strong contact with the hole walls under impact and vibration, achieving reliability comparable to multiple anchor bolts while requiring only one hole.
Solution Approach 2:
The cylindrical body and elastic packing pipe utilize curved, spherical-like geometry that distributes impact forces uniformly around the single drilled hole. This curved structure enhances the ability of the single-hole fixation to resist impact and vibration compared to linear or angular configurations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The bolt unit maintains secure fixation and watertightness even under impact, reducing the risk of separation and water leakage, while allowing easy installation and universal application across different hole diameters.
Implementation Method 1
an elastic packing pipe inserted into the cylindrical body and placed on the front end tip... a compression nut screwed to the upper thread surface and pressurizing the upper washer so that the elastic packing pipe expands
Implementation Method 2
a plurality of friction protrusions formed in an outer circumferential surface of the elastic packing pipe to increase friction with an inner circumferential surface of the drilled hole
Data Source
AI summary
A multi-purpose bolt unit for fixing an object to a drilled hole formed in a soft construction structure. The multi-purpose bolt unit including: a cylindrical body inserted into the drilled hole; a front end tip formed at a lower end of the cylindrical body and having a larger outer diameter than an outer diameter of the cylindrical body; an upper thread surface formed in an upper side of the cylindrical body while spaced apart from the front end tip; an elastic packing pipe inserted into the cylindrical body and placed on the front end tip; an upper washer inserted into the cylindrical body and placed on the elastic packing pipe; a compression nut screwed to the upper thread surface and pressurizing the upper washer so that the elastic packing pipe expands; and a fastening screw groove formed inside the cylindrical body and opened upward through the compression nut.