AU2002100236A4

AU2002100236A4 - Multipurpose safety handrail system

Info

Publication number: AU2002100236A4
Application number: AU2002100236A
Authority: AU
Inventors: Walter Buenemann
Original assignee: ALDECK ROOFING VIC Pty Ltd
Current assignee: Aldeck Roofing (vic) Pty Ltd
Priority date: 2001-03-29
Filing date: 2002-03-27
Publication date: 2002-06-13
Anticipated expiration: 2010-03-27

Description

AUSTRALIA

Patents Act 1990 COMPLETE

SPECIFICATION

INNOVATION

PATENT

MULTI PURPOSE SAFETY HANDRAIL

SYSTEM

The following statement is a full description of this invention, including the best method of performing it known to me.

AUSTRALIAN PATENT OFFICE: PROVISIONAL APPLICATION NUMBER: PR4026 (29/3/01) NAME OF APPLICANT: ACTUAL INVENTOR: ADDRESS OF SERVICE: TITLE OF INVENTION: Aldeck Safety Systems Pty Ltd A.C.N. 005 332 981 Waldemar Friedrich Buenemann 82 Trawalla Avenue, Thomastown Vie 3074 P.O. Box 329, Thomastown Vie 3074 Multi Purpose Safety Handrail System I MULTIPURPOSE SAFETY HANDRAIL

SYSTEM

Field of the invention is a collapsible, roof mounted, multipurpose guardrail system, aimed first of all to improve the primary, secondary, and indirect safety requirements, building flat or low-pitched roofs.

There are several well known solutions on this field like AU Patent 608,166 or US Patent 4,666,131 (Adjustable guard rail stanchion), however their usage is limited for certain roof structures, connected to the wall or under the roof level, and to assemble, and disassemble them is a rather complicated operation.

Our aim was to create and to provide a guardrail system with many features superior to any roof rail system on the market today. The inventors themselves roofing contractors for decades (40 years) have come up with this new invention.

Our solution is to make a safety frame apparatus (see Fig. 1. 2, 3 and 4) for securing a roof edge rail system to the top of a roof structure. We can connect it to the roof purlins (9) or to the safety roof deck where each supporting bar being fastenable on the top roof purlins The purlin-clamping bracket has a edge type slot, which locks in to the down lip of a roof purlin The clamping bracket, which slides over the roof support bar can be locked in place by a coach bolt that is held in the sliding groove of the roof support bar A fibre handle lock nut (16) will fasten the first purlin clamp onto the second purlin from the edge of the roof The sliding groove (15) in the lengths of the roof supporting bar and the rail support post is continuous in the front and the back of the post and the same sliding groove is on top and the bottom of the supporting bar The groove (15) is necessary for the sliding effect and securing a coach bolt (7 and 8) for securing and safe anchoring of the purlin clamping brackets and the rail support brackets firmly in place, when the lock nuts (17) are tightened. After the clamping bracket is being pulled over the lip of the first purlin and locked in its place by means of the sliding coach bolt and fibre handle lock nut the safety frame apparatus (20) is then fixed to the top of the roof purlins (9) in the collapsed form and held in place by the reverse action locking angle The next step is to fix the rail support post into the vertical position. After this step the collapsible stay and brace is simply pushed down and locked firmly into place. To reverse this action it can only be achieved by pulling on the hinge axel (20) on the collapsible stay and brace The collapsible stay and brace also is very vital for the overall stability of the safety frame. The collapsible stay and brace is fastened to the rail support post and the roof support bar with 8 mm diameter hardened coated bolts and held together by nylon inserted lock nuts, nylon and coated washers form a separation and allow easy movement of the joints.

The rail support post is in the rectangular position to the roof support bar held in place by the end stop angle (18) and the collapsible stay and brace The vertical rail support post has been fitted with two rail support brackets These brackets being fabricated from 80 x 50mm x 3mm aluminium hollow sections 80 mm long.

Two holes 30 x 30 mm have been cut through the broader surfaces 80 x 80 mm top and bottom of the hollow section. An 8 mm diameter hole is drilled in the back surface 80 x mm to receive a coach bolt and lock nut The coach bolt is fixed through the 8 mm hole in the bracket and then the whole rail support bracket is pushed over the rail support post while the head of the coach bolt fitted in to the sliding groove of the rail support post after positioning the bracket at a height required. A locknut (17) will hold the bracket securely in place. The same applies to the upper bracket.

Two supporting rails (19) are inserted through the opening of the rail support bracket and held tightly in place by fastening the fibre handle locking device (16) and a collapsible roof mounted guardrail system has been provided.

This system is never on the way of the work on the roof. When the roof sheeting (11) is to be fixed, by starting on one end of the roof frame to lay roof sheeting (11) at intervals of approximately 3 metres the safety frame apparatus becomes a temporary obstacle. To obtain a free passage for the laying of roof sheeting (11) and to continue it is necessary to momentarily lift up the roof support bar It can be done by removing the fibre handle lock nut (16) from the 2 purlin clamping bracket pushing purlin clamping bracket (4) free from the purlins leaving the coach bolts in the sliding grooves Then pulling on the hinge axel (20) releasing the collapsible stay and brace out of its lock position. After this step the roof support bar can be lifted off the purlins and supported on the rail support post whilst the guardrail safety is still fully intact, held by the safety frame either side and the supporting rails (19) the laying of roof sheeting (11) can now continue.

After the roof sheeting is fixed the roof support bar is laying on top of the roof tray surface (11) in between two ribs. The rib clamping device (13) is now fitted to the roof support bar and tightened with the fibre handle lock nut (16) previously removed from the purlin clamping bracket and tightened to the coach bolt left in the sliding groove The rib clamping device (13) is then clamped on to one rib of the steel roofing (11) to one side of the roof support bar This provides a secure safety frame system supported of a clip-deck roofing structure (11).

It is also possible that instead of a clip-deck a pearce fixed roofing sheet is being used. In that case roofing screws with neo-preen washers are fixed through the crest of roofing profiles, such as Corrugated Iron, Trimdek or Spandek Sheeting. Than an aluminium plate is fitted to the roof support bar in the same manner as it was described earlier. This aluminium plate (12) is covering 2 ribs either side of the roof support bar (2) directly over where the roof purlins are situated. This plate (12) is then fixed with an appropriate roof tec screws through the top of the ribs into the purlins This then describes the Collapsible Multipurpose Guardrail System in its Multipurpose Applications.

Claims

1. Safety frame apparatus for securing a roof edge rail system to the top of a roof structure, roof purlins safety roof deck (11) each supporting bar being fastenable on the top roof purlins characterised in that the purlin clamping bracket has a edge type slot, which locks in to the down lip of a roof purlin the clamping bracket which slides over the roof support bar can be locked in place by a coach bolt that is held in the sliding groove (15) of the roof support bar a fibre handle lock nut (16) will fasten the first purlin clamp onto the second purlin from the edge of the roof

2. Safety frame apparatus according to claim 1, characterised in that the sliding groove in the lengths of the roof supporting bar and the rail support post is continuous in the front and the back of the post and the same sliding groove (15) is on top and the bottom of the supporting bar the groove (15) is necessary for the sliding effect and securing a coach bolt (7 and 8) for securing and save anchoring of the purlin clamping brackets and the rail support brackets firmly in place, when the lock nuts (17) are tightened.

3. Safety apparatus according to claim 1 and 2 is now securely fixed to the top of the roof purlins 1 and 2 and the rail support post is fixed into the vertical position. The collapsible stay and brace is simply pushed down and locked firmly into place. To reverse this action it can only be achieved by pulling on the hinge axel (20) on the collapsible stay and brace The collapsible stay and brace is fastened to the rail support post and the roof support bar

4. Safety frame apparatus frame work according to claim 1 characterised in that to obtain a free passage for the laying of roof sheeting (11) and to continue it is necessary to momentarily lift up the roof support bar by removing the fibre handle lock nut (16) from the 2 purlin clamping bracket pushing purlin clamping bracket free from the purlins leaving the coach bolts in the sliding grooves (15) then pulling on the hinge axel (20) releasing the collapsible stay and brace out of its lock position then the roof support bar can be lifted off the purlins and supported on the rail support post whilst the guardrail safety is still fully in tact held by the safety frame either side and the supporting rails (19). Safety frame apparatus according to claims 1 characterised in that in the case of the roof support bar is now laying on top of the roof tray surface (11) in between two ribs. The rib clamping device (13) is now fitted to the roof support bar and tightened with the fibre handle lock nut (16) previously removed from the purlin clamping bracket (4) and tightened to the coach bolt left in the sliding groove The rib-clamping device (13) is then clamped on to one rib of the steel roofing (11) to one side of the roof support bar This provides a secure safety frame system supported of a clip-deck roofing structure (11).