Multi-Latches For Barrier Access
Multi-Latches can be installed onto existing or new vehicle barriers of swinging, rising or chain style. In these installations the Multi-Latch becomes both the locking device and the beam keeper.
When professionally installed onto steel or timber vehicle barriers Multi-Latches can convert any existing barrier structure into a shared access portal.
A full-scale diagram can be viewed here
Chain barriers such as those used in car parks and forestry access roads can also be adapted to Multiple access by installing a chain or tubular Multi-Latch (dependent on the post style) to the post and joining the existing chain to the newly installed Multi-Latches chain catch using a U-shackle (the shackle must be welded shut) it is also a good idea to trim the existing chain to length.
Rising or Counter-weighted Barriers
Installation of Multi-Latches on rising barriers is dependent on the barrier design but the basic objective is to restrict the barrier from lifting when in the locked position. The ideal solution is to trim the post down and install the Multi-Latch horizontally on the top of the post so that the body runs parallel with the beam. The catch can now be installed onto the underside of the beam so that it enters the front catch hole from above, a rubber block fitted around the base of the catch block helps cushion the drop. However, many rising beams are quite flexible CHS (tubular or pipe) steel, designed to drop into a V shaped receiver. With this style of beam the above installation is likely to be unsuccessful and the use of a chain catch is preferred. Basically the Multi-Latch is installed horizontally or vertically onto the post below the v shaped receiver and a chain catch is used on the barrier beam to restrict the beams rise when in a locked position. If you have any questions on how best to install a Multi-Latch to a rising barrier please e-mail Technical Support or ring your nearest office and ask for Technical Sales (the provision of photographs of the barrier in question will help speed up the production of inquiry specific instructions).
The simplest style of barrier to fit a Multi-Latch to is the swinging type. To integrate the Multi-Latch first cut through the striking post just below the barrier beam. This should allow the barrier to swing over the top of the newly cut post. The Multi-Latch body is now mounted vertically onto the striking post with the rear catch hole protruding above the top of the post. The lower lip of the catch hole should be flush with top of the cut post and facing the beam in its closed position. If the post is circular hollow section (tube or pipe) then the longitudinal mounting slot in the back of the lock body should be used in conjunction with two dome head cup square bolts (coach or carriage bolts). Once the body is installed the beam should swing over the top of the post and slam flush with the protruding Multi-Latch. Next the catch is installed. Offer the catch up to the rear catch hole and fit all the padlock pins. Swing the barrier beam into its closed position and clamp the catch to the beam, now remove one padlock pin and swing the beam away from the post. The catch can now be bolted or welded into position. If installing onto steel posts the cut surface should now be made good with zinc based paint and the post should be filled with cement. If installing onto timber barriers shear nuts and large washers should be used during installation and the washers / shear nuts should be counter sunk into the timber to restrict removal.