AS ISO 6015:2021 pdf free.Earth-moving machinery – Hydraulic excavators and backhoe loaders – Methods of determining tool forces.
4.4 Requirement during testing
The tests shall be conducted with the machine running in accordance with the manufacturer’s operating instructions and observing all safety rules.
Tie-down and blocking devices (4.2.4) shall be applied to the machine to limit slippage and tipping. Safety chains shall be loose so that the machine can attain the tipping condition and yet be prevented from overturning.
Components may be mounted on a test bed simulating a complete machine.
The required cylinder(s) shall be operated independently and the force at the bucket lip or attachment recorded with the engine running at the manufacturer”s rated speed.
A series of preliminary tests shall be conducted with the equipment boom arm and bucket at different angles in relation to each other (i.e. by varying the cylinder stroke), in order to obtain the optimum position giving the maximum force. The position (angle) of the boom, arm and bucket at the optimum position shall be recorded.
4.5 Limit conditions
The limit condition for each test shall be noted.
If the hydraulic limit condition is reached, the report should note the system or circuit in which the maximum relief circuit hydraulic pressure was exceeded.
If the tipping limit condition is reached, the tool force shall be measured after the onset of tipping.
If the slipping limit condition is reached, the machine shall be anchored and the reported results should
indicate that the maximum tool force was obtained by anchoring the machine.
4.6 Pivot positions
When alternative pivot positions for the boom, arm, attachment and cylinders and/or a telescopically adjustable boom are available, the relative pin positions of boom, arm and bucket fixing and/or the telescopic boom position as tested shall be recorded.
4.7 Outriggers
For machines fitted with outriggers, the tests shall be conducted with the outriggers raised or lowered as specified by the manufacturer.
4.8 Measurement procedure
4.8.1 General
Each test shall be conducted three times, and the maximum tool force for each test shall be noted; the arithmetic mean of these three values shall be recorded in the test results.
The tool forces shall be measured in accordance with the specified requirements.
For buckets with a curved or pointed cutting edge, the tool forces shall be measured at the centre of the bucket width.
The direction of the tool forces to be measured shall be tangential to the arc described by the bucket lip.
For each machine equipped with hoe, shovel, or telescoping boom equipment, bucket and arm tool forces are required to properly determine the tool forces. For each machine equipped with either grab or clamshell equipment, only the grab/clamshell closing force is required for proper determination.AS ISO 6015 pdf download.
AS ISO 6015:2021 pdf free
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