ISO 13861:2022 pdf download.Machinery for forestry — Wheeled skidders — Terms, definitions and commercial specifications
This document specifies terminology and required information as a general framework for identifying
and describing the main dimensions and features of wheeled skidders.
It is applicable to articulated wheeled cable and grapple skidders.
NOTE The terminology and requirements given in this document do not necessarily all apply to a specific
machine. Machines can be characterized by the dimensions and features which are relevant to them.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 General terms
3.1.1 skidder self-propelled machine designed to transport trees or parts of trees by trailing or dragging
[SOURCE: ISO 6814:2009, 2.3.1.15]
3.1.2 ground reference plane
GRP hard, flat, horizontal surface on which the machine is placed for measurements
3.2 Terms related to masses
3.2.1 normal operating mass
total mass of the machine as specified, fully serviced, with full fluid levels and a 75 kg operator
3.2.2 maximum operating mass
total mass of the machine as specified, fully serviced, with full fluid levels and a 75 kg operator, including all machine options with the largest tyre or hydro-inflation combination and the manufacturer’s maximum specified load
3.3.7 overall height
h 1 vertical distance between the ground reference plane (3.1.2) and a horizontal plane passing through the highest point of the machine
Note 1 to entry: See Figure A.1.
3.3.8 blade height
h 2 vertical distance from the lower edge, resting on the ground reference plane (3.1.2), to the top of the blade, decking lugs excluded
Note 1 to entry: See Figure A.1.
3.3.9 maximum blade lift of lower edge
h 3 maximum vertical height to which the lower edge of the blade can be raised from the ground reference plane (3.1.2)
Note 1 to entry: See Figure A.1.
3.3.10 lowest blade position
h 4 vertical distance from the ground reference plane (3.1.2) to the blade’s lower edge with blade at its lowest position
Note 1 to entry: See Figure A.1.
3.3.11 ground clearance
h 5 vertical distance from the ground reference plane (3.1.2) to the lowest point of the machine centre portion, i.e. 25 % of the tread (3.3.19) to either side of the longitudinal centreline
Note 1 to entry: See Figure A.2.
3.3.12 ground clearance at articulation joint
h 6 vertical distance from the ground reference plane (3.1.2) to the lowest point at the articulation joint Note 1 to entry: See Figure A.1.
3.3.13 loaded tire radius
r 1 vertical distance from the ground reference plane (3.1.2) to the horizontal centre of the axle with the machine at normal operating mass (3.2.1)
Note 1 to entry: See Figure A.1.
3.3.14 main fairlead roller height
h 7 vertical distance from the horizontal centre of the main fairlead roller to the horizontal centre of the
axle Note 1 to entry: See Figure A.1.
3.3.15 winch height
h 8 vertical distance from the horizontal centre of the winch drum to the horizontal centre of the axle
Note 1 to entry: See Figure A.1.
3.3.16 rear axle to main fairlead roller
l 7 horizontal distance from the vertical centre of the rear axle to the vertical centre of the main fairlead roller
Note 1 to entry: See Figure A.1.
3.3.17 main fairlead roller diameter
d 1 diameter of main fairlead roller at its mid-length position
Note 1 to entry: See Figure A.1.
3.3.18 overall width
w 1 horizontal distance between two vertical planes parallel to the longitudinal axis of the machine and passing through the farthest points on the two sides of this axis
Note 1 to entry: See Figure A.2.
3.3.19 tread
w 2 horizontal distance between two parallel vertical planes passing through the centreline of the tires on an axle
Note 1 to entry: See Figure A.2.
3.3.20 frame oscillation
a 1 angle that one frame will rotate from a horizontal datum, in both directions, without rotating the other frame, measured in degrees
Note 1 to entry: See Figure A.2.
3.3.21 axle oscillation
a 2 angle that one axle will rotate from a horizontal datum, in both directions, without rotating either frame, measured in degrees
Note 1 to entry: See Figure A.2.
3.3.22 clearance circle
d 2 diameter of the smallest circle that the outermost point on the machine will describe when turning,brakes unapplied, blade in travel position, unloaded
Note 1 to entry: See Figure A.3.ISO 13861 pdf download.ISO 13861 pdf download
