Pin Anchor Driver for Rotary Hammer
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Solution Overview
Problem
The existing methods for installing pin anchors in concrete or masonry structures require multiple tools, including drills and hammers, which are inefficient and cumbersome.
Innovation Solution
A pin anchor driver designed for use with a rotary hammer, featuring a main shaft, non-magnetic driver head, magnet, and sleeve, that allows for incremental driving of pin anchors using a rotary hammer in impact-only mode, with a magnetic force maintaining the pin head in contact with the driver head and a sleeve that moves between extended and retracted positions to facilitate precise anchoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple tools (drill and hammer) are used to install pin anchors, then the installation can be completed, but the process becomes cumbersome and inefficient
Solution Approach 1:
The patent combines the drilling function and hammering function into a single integrated tool - the pin anchor driver. The driver includes a main shaft that can be attached to a rotary hammer, and incorporates both a driver head for impacting pin anchors and a drill bit receiver that accepts a drill bit. This merging of functions eliminates the need to switch between separate drill and hammer tools, directly resolving the technical contradiction by reducing tool complexity while maintaining installation efficiency.
Solution Approach 2:
The pin anchor driver is designed as a universal tool that performs multiple functions: it can receive and drive pin anchors using the driver head, and it can also receive drill bits for drilling holes through the drill bit receiver. The tool adapts to different installation scenarios by accepting different attachments (driver head or drill bit), making it a multi-functional device that replaces multiple specialized tools.
2Productivity
If a rotary hammer is used in impact-only mode, then pin anchors can be driven efficiently, but precise control requires additional mechanisms
Solution Approach 1:
The sleeve is designed to move dynamically between extended and retracted positions based on the installation stage. During the driving operation, the sleeve extends to guide the pin anchor and provide support. The dynamic movement of the sleeve allows the tool to adapt to different operational phases without requiring complex control systems, maintaining productivity while managing complexity through simple mechanical motion.
Solution Approach 2:
The magnet acts as an intermediary between the driver head and the pin anchor head. It provides a holding force that maintains contact between the driver head and pin anchor during the impacting operation. This magnetic intermediary ensures precise control and force transmission without requiring complex mechanical locking or adjustment mechanisms, allowing efficient impact-only mode operation.
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 pin anchor driver streamlines the installation process by using a single tool to efficiently drive pin anchors into concrete or masonry surfaces, reducing the need for multiple tools and enhancing precision and ease of use.
Implementation Method 1
a magnetic force maintaining the pin head in contact with the driver head
Data Source
Figure 1~2
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Figure 5
AI summary
A pin anchor driver (10) for use with a rotary hammer includes a main shaft (14) having a bore (18) in which a drill bit of the rotary hammer is at least partially receivable, a driver head (22) coupled to the main shaft (14), and a magnet (26) positioned between the main shaft (14) and the driver head (22).