AS 5144.5:2015 pdf free download.Industrial trucks——Safety requirements and verification Part 5: Pedestrian-propelled trucks.
4 Safety requirements and/or protective measures
4.1 General
Trucks shall comply with the safety requirements and/or protective measures of this clause. In addition, the truck shall be designed according to the principles of ISO 12100 for relevant hut not significant hazards which are not dealt with by this document.
4.2 Propelling, steering
4.2.1 Push/pull handles
Push/pull handle(s), either vertical or horizontal, and/or a tiller shall be provided to allow the operator to push, pull and steer the truck and, where applicable, lift the load. The force shall be measured and be within the limits defined in Annex A.
4.2.2 Tiller
The tiller shall be provided with a handle of the closed loop type or otherwise designed to ensure lateral protection of the operator’s hands. The hand grips shall be of a cross-section enclosed within the space between two concentric circles of 25 mm inside diameter and 35 mm outside diameter and provide a minimum span of 120 mm for each hand. The height of the tiller handle (dimension a) shall conform to the dimensions shown in Figures 1 to 7. When pulling, the horizontal distance between the end of the tiller and the front of the wheel (dimension b in Figures 3, 5, and 7) shall be more than 500 mm, the handle axis being positioned within 700 mm to 1 000 mm height. The tiller shall automatically return to the upper rest position when released.
4.2.3 Push/pull bars
The height from the ground to the centre of push/pull bar shall be 1 100 mm to 1 300 mm, see Figures 8 to 11.Vertical bars shall have a vertical length of at least 300 mm, see Figure 9. A minimum distance of 50 mm shall be provided between the lateral outside of the push/pull bars and the lateral plan view of the truck. The hand grips shall be of a cross-section that is enclosed within the space between two concentric circles of 25 mm inside diameter and 35 mm outside diameter.
4.3 Load-handling controls
4.3.1 General
Lift and lower controls may be located on the tiller, when fitted, or may be by a separate device. Controls shall be designed to minimize the risk of unintended operation and shall return to neutral and stop movement when released.
4.3.2 Control with a device located on the tiller
If the lift and lower controls are on the tiller, they shall be located in such a way that the operator is able to activate the controls without releasing hold of the hand grip. The lift and neutral controls shall be maintained in the selected position. The lower control, when released, shall return to the neutral position and lowering movement of the forks or platform shall stop.
The actuating force on selection devices shall not exceed 150 N.
Where the movements of selection devices for lifting and lowering are located in a plane parallel to the tiller plane, the lift control shall be selected by pushing the selection devices towards the tiller articulation point, and the lower control by pulling the selection device in the opposite direction. See Figure 12.
4.3.3 Control with a device not located on the tiller
Lifting can be performed by a separate device, e.g. a hand pump lever, foot-operated lever or rotating handle. Lowering can be by a separate device, e.g. hand-operated lever, foot-operated lever or screw type valve, all of which return to neutral or closed position and stop movement when released.
4.4 Lifting systems
4.4.1 Chain system
The truck or mast manufacturer shall have on record a certificate on chains from the chain manufacturer, showing the breaking load of chains. The diameter of wire rope guide pulleys, measured from the bottom of the groove, shall be at least 22 x the diameter of the wire rope. Splicing of wire ropes, except at the terminal ends, is not allowed. Where more than one wire rope is used, means shall be provided to limit uneven loading in the wire ropes, e.g. by adjustment.
4.4.3 Hydraulic system
4.4.3.1 Limitation of stroke
On stacker trucks, the lift assembly shall be fitted with a positive means of preventing over-travelling. In addition, positive means (e.g. mechanical stops) shall be provided to prevent the fork carrier and moving elements of the mast structure from unintentionally disengaging from the upper end of the mast. On pallet and scissor-lift trucks, means shall be provided to limit the stroke of the lifting ram at stroke end.AS 5144.5 pdf download.