Guidance System
To minimize the aisle width, fork trucks in narrow aisle systems operate with minimum safety distance to the racking. Hence guidance system is a must for fork trucks operate in a VNA warehouse. Guidance systems ensure safe operation and are the basis for high throughput.
Dependent on the type of truck, there are three options for guidance:

A.Rail Guide. The truck is mechanically guided between two steel profiles bolted to the floor. Rollers fitted on the side of the chassis, 2-3 on each side, keep the truck between the rails in the centre of the aisle.
B.Wire Guide. Installed by the fork truck supplier. The inductively guided truck follows a guide wire laid in the floor. A frequency generator feeds the guide wire with high frequency alternating current (low voltage). The current produces a concentric electromagnetic field. Antennae fitted to the truck recognize this field. Thus every deviation of the truck to the guide wire is registered. A compensation steering process is automatically initiated so the truck is safely controlled in the aisle.
C.Rail Guide with second cement pouring, implemented by civil engineering supplier.
Wire guide is more popular used in current stage.
Floor

The function and productivity of a narrow aisle warehouse is decisively influenced by the floor, and in particular by its flatness. The Sub-base and floor plate must be dimensioned in such a way that permitted tolerances are not exceeded under load conditions. Bellowing floor flatness standards shall be followed when implementing a VNA pallet racking warehouse:
TR34 AND TR34 Appendix C
CEN15620
DIN 15185
ACI Fmin100
HUAYIDE systems have proven themselves in numerous applications.
We apply our worldwide expertise and many years of experience gained through collaboration with manufacturers of , storage and retrieval solutions, aisle protection and ire protection equipment when implementing a storage solution for our customers.
HUAYIDE sees itself as a professional service provider. Contact us today to evaluate the most appropriate VNA pallet rack solutions that works for your manufacturing or distribution operation.