This document specifies criteria for construction, establishes performance test methods and defines acceptance criteria for telescopic mechanical screw- and nut-type drawbar jacks and hydraulic drawbar jacks intended to be fitted on the implement tongue of interchangeable towed machinery [here after referred to as “implement(s)”] as original equipment or as replacement jacks. In addition, it specifies minimum markings and information for use to be provided by the jack manufacturer.<\/p>\n
These jacks are used specifically for<\/p>\n
supporting the hitch points of implements during storage;<\/p>\n<\/li>\n
lifting and lowering of implement tongues to facilitate attaching to or disconnecting from an agricultural tractor; and<\/p>\n<\/li>\n
levelling an implement for stationary use.<\/p>\n<\/li>\n<\/ul>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4 Design requirements 4.1 Base 4.2 Jack overtravel 4.3 Hydraulic jacks <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.4 Drop leg 5 Performance requirements 5.1 Crank effort 5.2 Corrosion protection 5.3 Water ingress 5.4 Basic rated life 5.5 Rated static compressive load capacity 5.6 Rated dynamic compressive load capacity <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.7 Rated static tensile load capacity 5.8 Rated dynamic tensile load capacity 5.9 Rated static side load capacity 5.10 Rated static side torque class <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 6 Jack stand system design verification tests 6.1 General procedures and installation of jack 6.2 Crank effort test 6.3 Jack overtravel test 6.4 Ground pressure calculation <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 6.5 Corrosion protection test 6.6 Rated static compressive load capacity test 6.7 Rated dynamic compressive load capacity test <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6.8 Rated static tensile load capacity test 6.9 Rated dynamic tensile load capacity test <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6.10 Rated static side load capacity test 6.11 Maintenance of the load 6.12 Acceptance criteria 6.12.1 General 6.12.2 Functional failure 6.12.3 Catastrophic failure <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 7 Information for use 7.1 Instructions 7.2 Markings 7.2.1 Load capacities 7.2.2 Torque class 7.2.3 Identification 7.2.4 Other markings <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Agricultural trailers and trailed equipment. Drawbar jacks – Design safety, test methods and acceptance criteria<\/b><\/p>\n |