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In the wire screen system, a drive tube with clamping bushes, onto which steel cables can be wound and unwound, takes care of the horizontal movement of the screen profile between the lattices. The screen resting on the wire bed is mounted to the screen profile, which in its turn is moving between the lattices. For an energy tight closure of a screening installation, a slip element is mounted under the screen profile. This slip element has an...
For greenhouses without lattice girders, such as certain types of poly greenhouses, Snelder has a suitable screening system as well.In such cases, we use a 19 mm tube as screen profile.To this, the various parts will be clamped, such as saddle clamps, screen stoppers, tube clamps and cable holders. The drive is identical to the one that is used for the pull-wire system for Venlo greenhouses.
In the push/pull system, the screening system is operated by means of gear-racks and push/pull tubes.In their turn, these are coupled to the screen profile drawn between the lattices.The diabolo wheel brackets will guide the push/pull tube. For screening a shorter (end) section, Snelder uses a special four roll delay unit.
A wall screen is usually supplied with one groove.Several screens can also be mounted per wall, depending on the number of purlin fields.In this way, a wall can also be partly darkened.
A twin rolling screen is characterized by the winding tube with motor which is located in the middle of the screening section.The benefit of this is that larger sections can be darkened, which is a good solution for higher greenhouses in particular.