Hollow Bar Bolt Injection Driver for Simultaneous Rotation and Grouting
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Solution Overview
Problem
The installation of hollow bar bolts is a multi-step process requiring tedious adjustments and separate machinery for drilling and injecting hardening products, which is inefficient and time-consuming.
Innovation Solution
An injection driver assembly that integrates a socket for rotating the bolt, a driver for coupling with machinery, and a housing assembly for injecting hardening products, allowing simultaneous rotation and injection through a unified pathway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate machinery is used for drilling and injecting hardening products, then each function can be performed with dedicated equipment, but the installation process becomes multi-step and time-consuming
Solution Approach 1:
The patent combines the drilling function (socket and driver) and the injection function (housing assembly with injection opening) into a single integrated installation device. The socket rotates the hollow bar bolt while the housing assembly simultaneously injects hardening product through the longitudinal channel and cross channels, eliminating the need for separate drilling and injection operations.
Solution Approach 2:
The installation device performs multiple functions simultaneously: the socket drives the hollow bar bolt into the wall while the driver rotates the socket, and the housing assembly injects hardening product through the pathway formed by the longitudinal and cross channels. This multi-functional integration streamlines the installation process into a single operational step.
2Ease of manufacture
If separate machinery is used for drilling and injecting, then equipment specialization is achieved, but the number of machinery pieces and operational steps increases
Solution Approach 1:
The patent merges the drilling mechanism (socket with distal opening for bolt reception, driver with shaft portion) and injection mechanism (housing assembly with injection opening and internal channels) into one integrated device. The socket couples to the driver which rotates within the housing assembly, creating a unified system that performs both drilling and injection functions.
3Productivity
If the socket remains capable of rotating during injection, then continuous installation operation is maintained, but the housing assembly must accommodate rotational movement while enabling injection
Solution Approach 1:
The housing assembly is designed to accommodate the dynamic rotational movement of the driver and socket while maintaining the injection pathway. The longitudinal channel extends through the driver and connects to cross channels that intersect with injection openings in the housing, allowing hardening product to be injected continuously even as the driver rotates the socket to drive the bolt.
Data Source
AI summary
An injection driver assembly may be used to install hollow bar bolts. The injection driver assembly may include a socket that can be rotated to drive hollow bar bolts into a wall or other structure. The injection driver assembly may also include a housing assembly that allows hardening product to be injected into a hollow bar bolt while the socket is positioned overtop the hollow bar bolt and remains capable of rotating.