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Dual Barrier 2EVO-part1Dual Barrier 2EVO-part1

DUAL BARRIER SYSTEM

The Dual Barrier System waterproof telescopic covers use telescopic covers and bellows  heat-sealed together.

In hydrostatic support machines, typically the large boring machines, a film of oil is used instead of the traditional rails with rollers and balls. The machine runs on this very special layer of hydraulic oil, characterised by a very high purity, an indispensable condition to guarantee performance.

On the other hand, these machines also use the usual coolant to cool the tool: it is therefore necessary to be absolutely certain that this oil cannot in any way penetrate the support system, contaminating and compromising the entire system with severe damage.

The standard solution generally adopted is “double insulation” that is a heat-sealed bellows under a telescopic cover.

Each of these systems has its own rails, so it is necessary to ensure perfect alignment between them, not to mention the time required for a double assembly and the negative repercussions on the space that is always scarce on the machines. PEI, being aware of these problems, has developed an original solution, which integrates fabric bellows together with a telescopic steel cover.

If the necessary technical and safety conditions are present, the Dual Barrier System telescopic covers can be made walkable.

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DUAL BARRIER – 2EVO

DUAL BARRIER – 2EVO

Waterproof telescopic covers

Our new product DUAL BARRIER 2EVO features an innovative modular structure of the bellows, one module for each element of the telescopic cover.
In practice, each part of the bellows is integrated under the telescopic cover: in this way the machine manufacturer receives a cover with a single rail to be installed, on which the bellows is guided by the cover, eliminating duplication.
The advantage is considerable: instead of arranging several rails and runs on a base already crowded with devices, the manufacturer installs a single rail; mounts the telescopic protection as usual, and automatically obtains double integrated protection.
Both products already existed as separate entities, with dual guidance. The new configuration, an original and unique product, does not need additional rails; the bellows remain attached to the steel cover. This integration of the bellows inside the cover is by no means a trivial idea, which is why we immediately proceeded to patent it.

Closed parcel

Waterproof telescopic covers

The size of the closed parcel is greater than that of the telescopic cover, the difference varies according to the machine space and specific needs.

Characteristics

Waterproof telescopic covers

DUAL BARRIER – 2EVO has only the telescopic cover that rests on the 2 rails, the bellows is supported by metal rods integrated into the cover.

DUAL BARRIER – 4SPC

DUAL BARRIER – 4SPC

Waterproof telescopic covers

Complete protection consisting of heat-sealed bellows sections and a telescopic cover.
The various sections of the bellows are integral with the telescopic boxes, so the protection is in a single block.
It is not necessary for the machine builder to arrange additional rails, or additional planes to fix the bellows flanges.
On the rails of the machine, there must be a sufficiently large area to accommodate the rollers of the telescopic and the blades of the bellows, which are side by side.
To access the machine rails, it is sufficient to unscrew only the attachment flange of the telescopic cover.
To position or remove the cover from the machine, simply lift the telescopic cover.

Closed parcel

Waterproof telescopic covers

The closed parcel is long enough, the telescopic closed pack added to a part of the closed pack of each bellows inserted between the telescopic elements.

Characteristics

Waterproof telescopic covers

DUAL BARRIER – 4SPC requires 2 rails with 2 supports for the telescopic cover and 2 supports for the heat-sealed bellows.

DUAL BARRIER – 4STD

DUAL BARRIER – 4STD

Waterproof telescopic covers

Complete protection consisting of heat-sealed bellows sections and a telescopic cover.
To access the machine rails, it is necessary to unscrew both the attachment flange of the telescope and that of the bellows.
To position or remove the covers from the machine, both the bellows and the telescopic protection must be lifted in two stages.

Closed parcel

Waterproof telescopic covers

The size of the closed parcel is the same as that of the telescopic cover.

Characteristics

Waterproof telescopic covers

The complete protection consisting of full bellows and a telescopic cover, requires 2 rails for the support of the telescope and 2 rails for the support of the bellows.