ISO 12140 pdf download

ISO 12140 pdf download Agricultural machinery — Agricultural trailers and trailed equipment — Drawbar jacks
Scope
This International Standard specifies terms and definitions, establishes test procedures, and createsminimum performance requirements for telescopic mechanical screw-type jacks or hydraulic jacksmounted on agricultural implements as original equipment and/or replacement jacks.
Furthermore, this International Standard defines terms, establishes test procedures, and createsminimum acceptance criteria for the use of telescopic mechanical screw-type jacks or hydraulic jacksmounted on agricultural implements as original equipment jacks or jacks fitted with a jack attachmentmounts (both weld-on and removable). In addition,it specifies minimum markings and information foruse to be provided by the jack manufacturer.
These jacks are used specifically for:
supporting the hitch points of towed agricultural implements during storage
lifting and lowering of implement hitches to facilitate attaching to or disconnecting from anagricultural tractor or other agricultural machines;
levelling of machinery for stationary use.
NOTEDrawbar jacks as part/component of a machine are also covered by ISO 4254-1:2013.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and areindispensable for its application, For dated references, only the edition cited applies. For undatedreferences, the latest edition of the referenced document (including any amendments) applies.
ISO 4413, Hydraulic fluid power — General rules and safety requirements for systems and their componentsISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.3.1
jack
hand or power-operated mechanism, with a ground contact pad (base) or wheel and fixing point (jackmount or mounting point), designed for controlled vertical movement
Note 1 to entry: A hand-operated jack typically uses mechanical means to control movement. Apowered-operatedjack typically uses hydraulic fluid displacement to control movement
3.2
towed agriculturalimplement
machine or device thatis designed to perform agriculturalfield operations andis pulled by an agriculturatractor or other agricultural machine and is usually equipped with wheels required for transport
3.3
static compressive load
vertical force measured at the jack location under static conditions
3.4
dynamic compressive load
vertical force measured at the jack location during jack extension (lifting)
3.5
static tensile load
force opposite of static compressive load resulting in a tension load applied to the jack
3.6
dynamic tensile load
force opposite of dynamic compressive load resulting in a tension load applied to the jack
3.7
side load
force applied in a plane perpendicular to the longitudinal axis of the jack in a direction generally aligning with the towing direction of the towed agricultural implement
3.8
side load
force applied in a plane perpendicular to the longitudinal axis of the jack at right angles to the
general towing direction of the towed agricultural implement