BS EN 16246:2012 pdf downlaod – Agricultural machinery — Backhoes — Safety
1 scope
This European Standard,when used together with EN ISO 4254-1 and EN 15811，specifies the safetyrequirements and their verification for the design and construction of hydraulic backhoes mounted to the threepoint linkage of a tractor. It describes methods for the elimination or reduction of hazards arising from theintended use of these machines by one person (the operator) in the course of normal operation and service. Inaddition, it specifies the type of information on safe working practices (including residual risks) to be providedby the manufacturer.
When requirements of this document are different from those which are stated in EN ISO 4254-1,，therequirements of this document take precedence over the requirements of EN ISO 4254-1 for machines thathave been designed and built according to the provisions of this document.
This European Standard, taken together with EN ISO 4254-1, deals with all the significant hazards, hazardoussituations and events (as listed in Table 1) relevant to hydraulic backhoes mounted to the three point linkageof a tractor，when they are used as intended and under the conditions of misuse foreseeable by themanufacturer.
This European Standard is not applicable to liting operations for the movement of unit loads with hooks orother similar devices.Materials connected with excavation activities are not intended as unit loads and theirmovement is covered by this standard.
This European Standard does not give requirements for quick hitch devices.
NOTE1 An amendment of EN 474-1 is under preparation to deal with this issue. lt will be evaluated for inclusion in thisEuropean Standard.
NOTE 2 Specific requirements related to road trafic regulations are not taken into account in this European Standard.
This European Standard is not applicable to hydraulic backhoes which are manufactured before the date of itspublication as EN.
2Normative 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 undated references,the latest edition of the referenced document (including any amendments) applies.
EN ISO 4254-1:2009, Agricultural machinery—Safety— Part 1: General requirements (IS0 4254-1:2008)EN ISO 12100:2010，Safety of machinery — General principles for design — Risk assessment and riskreduction (SO12100:2010)
ISO 3600,Tractors，machinery for agriculture and forestry，powered lawn and garden equipment 一Operafor’s manuals —Content and presentation
ISO 3767-2,Tractors,machinery for agriculture and forestry，powered lawn and garden equipment —Symbols for operator controls and other displays — Part 2:Symbols for agricultural tractors and machineryIso 3776-1,Tractors and machinery for agriculture —Seat belts — Part 1: Anchorage location requirements
ISo 3776-2,Tractors and machinery for agriculture — Seat belts — Part 2:Anchorage strength requirements
ISO 11684,Tractors, machinery for agriculture and forestry, powered lawn and garden equipment — Safetysigns and hazard pictorials —General principles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010,EN ISO 4254-1:2009 and the following apply.
NOTE An example of the machine types covered by this standard is illustrated in Annex A.
3.1
rear-mounted hydraulic backhoe
machine with hydraulically powered arms mounted to the rear three point linkage of the tractor, used with an attachment for various operations, such as excavating, elevating, swinging, discharging
3.2
primary loading arm
loading arm located between the frame of the machine and the secondary arm
3.3
secondary loading arm
loading arm located between the primary loading arm and the attachment
3.4
telescopic arm
arm capable of being extended in a longitudinal direction
3.5
swing pivot
device which pivotally connects the frame with the primary loading arm, in order to let it swing about a vertical axis
3.6
outriggers
device to keep the machine stable on the ground when the backhoe is in use
3.7
side shifting
device to allow horizontal movement within limits of the backhoe swing pivot
3.8
attachment
tool or interchangeable equipment that can be attached to the secondary loading arm, such as a bucket or an inverted bucket, as indicated by the manufacturer
3.9
inverted bucket
rearward facing bucket for the excavating, elevating, swinging and discharging of the material