00191657-0102_UM_Luftkissentransportsystem_DE EN.pdf - 第57页

Air cushion t ransporting system for SIPLACE Operating Instructions 10/99 edition 4.3 Surface index 15 4.3 Surface in dex The foll owing inde x syste m can be used to calcula te the vo lume of air requ ired to move a sp …

Operating Instructions Air cushion transporting system for SIPLACE

4.2 Joints 10/99 edition

Fig. 4.1 - 1 Pressure distribution in the floor

DANGER 4

: Do not exceed the load-bearing capacity of the floor.

4.2 Joints

Expansion joints must be filled with a flexible compound. The best material for this purpose is a

rubber-like urethane jointing compound with a Shore hardness of approximately 80. To ensure

that the joints are filled properly, we recommend a joint width of not less than 10 mm. Air losses

from the cushion can be minimized by rounding the jointing compound off slightly at the top. 4

Fig. 4.2 - 1 Expansion joints in the hall floor

Load on air cushion Load on rollers

better

Air cushion transporting system for SIPLACE Operating Instructions

10/99 edition 4.3 Surface index

4.3 Surface index

The following index system can be used to calculate the volume of air required to move a specific

load on different surfaces with the same friction. The theoretical initial value (index 1) relates to a

sheet of polished glass. An index of 3, for example, indicate that three times the volume of air is

required. 4

Tab. 4.3 - 1 Surface index

(The table also takes account of air losses due to porosity).

Surface Index

Clean sheet of glass (theoretical comparison value)1

Smooth, machine-polished floor, sealed 2

Smooth epoxy resin coating 1-2

Vinyl tiles (well laid and totally sealed joints) 1.5-2

Thin galvanized sheet 1.5-2

Hot-rolled sheet (with no rust or scale) 1-2

Pressboard, painted, smooth side 1-2

Painted chipboard 1-1.5

Manually smoothed concrete with visible grooves 3-5

Smooth concrete (unsealed) 2.5-4

"FAMA" bituminous concrete, smooth 2-3

Concrete, with wearing layer, smooth surface, not recommended

(possibility of cracking) 3- 4

Concrete with “broom finish” (unacceptable) 7-10

Asphalt road (unacceptable) 10-15

Operating Instructions Air cushion transporting system for SIPLACE

4.4 Undulating and sloping surfaces 10/99 edition

4.4 Undulating and sloping surfaces

Fig. 4.4 - 1 Undulating surface

The air cushion modules are sufficiently flexible to be able to adapt to a gently undulating surface

to a limited extent. The difference in height must not exceed 2% of the diameter of the rubber

bellows, however. 4

Long undulations can be regarded as slopes. A load on the film of air will tend to slide to the lowest

point of its own accord on account of the low friction. The force required to hold the load in place

on a slope can be calculated as follows: 4

F = tg α · G (Dynamic forces must be added as well). 4

Fig. 4.4 - 2 Sloping surface

WARNING RISK OF CRUSHING 4

: In these situations, the load must be secured by means of drives, grippers, etc.

A ramp may be built in order to pass over door sills or steps, provided that the above values are

taken into account. 4

< 2% of D