Patent Application
20170211385
The positioning of threaded rods in place until its grouted has been practiced in different ways throughout the history of overhead rock grouting. Conventional methods include manual positioning where a person has to position the threaded rod in a predefined position by attaching the threaded rod to support sections that extend across the space in which the grout is to be pumped into. Other methods include threading on expandable heads, but it is not the best method as it is costly and expandable heads effectively restrict the grout pumped through them, and also if the hole is oversized, the assembly won't work well.
Hence, there is a long felt but unresolved need for a spring suspension clip configured to steadily clip a threaded rod, and to hold the rod in position until the grout is pumped in and facilitated to set.
The spring suspension clip described herein addresses the above mentioned need for a device which is configured to steadily clip a threaded rod, wherein the spring suspension clip can be easily clipped over the top of the threaded rod. A spring suspension clip configured to suspend a threaded rod member comprises a helical body with an upper end and a lower end. Then the clipping section is configured to conform to a threaded section of the threaded rod member to flexibly suspend the threaded rod member into a space which is drilled and positioned within a section of rock which is to be grouted.
In an embodiment, the clipping section is clipped at the top end of the threaded rod. In an embodiment, the threaded rod member is of an R32 grade threaded rod. In an embodiment, the grout is filled inside the space after suspending the threaded rod member in a predefined position within the space, and the grout is allowed to set within the space. In an embodiment, the height of the suspension of the threaded rod member can also be adjusted by rotating the spring suspension clip along the threaded section of the threaded rod member.
A user first positions the driver 103 which is connected to a rock bolter 108, in alignment with the space 104, then the user connects the spring suspension clip 100 at the top end of the threaded rod member 105, and the threaded rod member 105 and the spring suspension clip 100 are inserted into the space 104. Now the threaded rod member 105 is threadably joined with the spring suspension clip 100 at a predefined height as set by the user by rotating the spring suspension clip 100 along the threaded section 109 of the threaded rod member 105 as shown in
The foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present concept disclosed herein. While the concept has been described with reference to various embodiments, it is understood that the words, which have been used herein, are words of description and illustration, rather than words of limitation. Further, although the concept has been described herein with reference to particular means, materials, and embodiments, the concept is not intended to be limited to the particulars disclosed herein; rather, the concept extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims. Those skilled in the art, having the benefit of the teachings of this specification, may affect numerous modifications thereto and changes may be made without departing from the scope and spirit of the concept in its aspects.
