Physical stresses

Physical stresses arise through unfavourable body postures, rapid or sustained body movements, high force exertion, the handling of loads, or a combination of these aspects. The stresses manifest themselves in strain upon the muscles, locomotor apparatus and spine. Machines and their control stations should be engineered such that stress factors are reduced to a minimum. A risk assessment assists in estimation of a work situation. Corresponding information can be found in the EN ISO 12100 standard and the EN 1005 series of standards.


Location of control actuators

Correct positioning of control actuators on machines is important in order for them to be reached and to be operated safely and comfortably. Attention should be paid here to design in consideration of anthropometric aspects and to the conditions of movement. Relevant information concerning the positioning of control actuators is summarized for example in EN 894-4.

Adjustability of operating panels

Ergonomisch verstellbarer Display für Fräsmaschinensteuerung © Michael Hüter

Adjustability of operating panels On the DMG Ergoline Control, the angle of the display and of the lower keypad is adjustable. This... more

Tablet PC for process control

Durch den automatischen Rohmaterialwechsel werden Mitarbeiter vor Schadstoffen geschützt © Michael Hüter

Tablet PC for process control A simple menu control on the iPad, which is docked on the machine, is used for process control and... more

Adjustable control and display element

Einstellbarer Arbeitsplatz eines Bedieners ermöglicht optimale Sichtachse und verhindert Blendeeffekte © Michael Hüter

Adjustable control and display element The control panel on the Trumpf Trubend 7000 range consists of a touch display in which display and... more

Overview

Visibility conditions

Visibility is important for the viewing of relevant areas of work, such as the inside of a machine tool or the area in front of a forklift truck. Constrained visibility can lead to unfavourable body postures or elevated mental stress.

Driver's rotating control station

Gabelstapler mit 180 Grad drehbarem Fahrerstand verhindern gesundheitsschädliche Stellungen der Halswirbelsäule und des Rumpfes © Michael Hüter

Driver's rotating control station Linde's driver's rotating control stations can be fitted to larger models of forklift. By releasing... more

Adjustability of operating panels

Ergonomisch verstellbarer Display für Fräsmaschinensteuerung © Michael Hüter

Adjustability of operating panels On the DMG Ergoline Control, the angle of the display and of the lower keypad is adjustable. This... more

Tilting driver's cab

Schubmaststapler mit kippbarer Kabine um Belastung für Genick zu vermindern © Michael Hüter

Tilting driver's cab A tilting driver's cab assists in reducing the necessary angle of head inclination. Such a cab... more

Overview

Motional range

The freedom of movement that a worker has at his or her workplace is important not only for reasons of comfort; insufficient room to move can lead to unfavourable body postures and may even cause accidents.

Variable driver's and operator's station

Sitz Crown TSP 7000 Hochregalstapler © Michael Hüter

Variable driver's and operator's station On Crown high-rack order pickers, the driver's control station can be adjusted to the needs of the... more

Vertical open machining concept

Offenes, vertikales Betriebskonzept ermöglicht Hilfsmitteleinsatz  bei großvolumigen Bauteilen © Michael Hüter

Vertical open machining concept The vertical design assures open access to the workpiece holder from the front and from above. For... more

Open pallet changing system

Gut zugängliches Palettenwechselsystem mit vollständig freier Fläche zur Vorbereitung in günstiger Arbeitshöhe © Michael Hüter

Open pallet changing system The Handtmann pallet changer for vertical milling machines enables the tool pallets to be separated... more

Overview

Exertion of force and handling of loads

Load handling is an issue wherever heavy weights need be transported. High forces may also have to be exerted during work, for example for the opening and closing of guards on machine tools. This places stress upon the human musculoskeletal and cardiovascular systems. In order to reduce the stress on workers, facilities must be fitted to machines to reduce the forces to be exerted and the loads to be handled. Relevant information on risk assessment of the forces to be exerted and loads to be handled can be found in the EN 1005-2 and EN 1005-3 standards.

Drives for doors on machine tools

Türsteuersystem mit Steuergerät und Motor ohne manuelle Kraftanstrengung © Michael Hüter

Drives for doors on machine tools Electric door drives can be retrofitted to existing machines in order to reduce the operating forces... more

Automatic loading of trolleys onto trucks

LKE Multiliner © Michael Hüter

Automatic loading of trolleys onto trucks The LKE MultiLiner can automatically load different types of trolley weighing up to 500 kg. The... more

Exertion of force and handling of loads

EXPRESSO t2m mit Sensorgriff ermöglicht Materialtransport ohne große Kraftanstrengung © Michael Hüter

Exertion of force and handling of loads The touch2move control concept implemented by Expresso is a universal control system suitable for a... more

Overview