ISO 5700 pdf download – Tractors for agriculture and forestry 一Roll-over protective structures (RoPs)—Static test method and acceptance conditions.
5.1.2 Means to apply a horizontal force to the roll-over protective structure, such as are shown in Figures 2 and 3, comp’ying with the requirements of 5.1.21 to 5,1.2.4.
5.1.2.1 It shall be ensured that the load can be uniformly distributed normal to the direction of loading and along a beam of length between 250 mm and 700 mm, In exact multiple of 50 mm.
5.1.2.2 The edges of the beam ii contact with the ro’l-over protective structure shall be curved with a maximum radius of 50 mm.
5.1.2.3 Universal joints, or the equivalent, shall be incorporated to ensure that the loading device does nof constrain the structure ii rotation or translation in any direction other than the loading dwection.
5.1.2.4 Where the roll-over protective structure’s length, covered by the appropriate load-applying beam, does not constitute a straight line normal to the load application direction, the space shall be packed so as to distribute the load over this length.
6 Preparation of tractor and ROPS for testing
6.1 The roll-over protective structure shall be manufactured to production specifications and shall be fitted to the appropriate tractor model chassix in accordance with the manufacturer’s declared attachment method.
6.2 The assembly shall be secured to the bedplale so that the members connecting the assembly and the bedplate do not deflect significantly in relation to the ROPS under loadeng The assembly shall not receive any support under loading oilier than that due to the initial attachment.
6.3 A track width setting for the rear wheels. if present, shall be chosen such that there is no interference with the ROPS during testing.
The assembly shall be supported and secured or modified so that all the test energy is absorbed by the ROPS and its attachment to the tractors rigid components
6.4 All detachable windows, panels arid removable non-structural fittings shall be removed so that they do not contribute to the strength of the ROPS.
In cases where it is possible to fix doors and windows open or remove them durrig work, they shall be either removed or fixed open for the test, so that they do not add to the strength of the ROPS. It shaM be noted wtiettier, in this position, they would create a hazard for the driver in the event of overturning
6.5 The ROPS shall be instrumented with the necessary equipment to obtain the required force-deflection data
7 Test procedures
CAUTION — Some of the tests specified In this InternatIonal Standard Involve the use of processes which could lead to a hazardous situation.
7.1 Sequence of tests
7.1.1 The test shall be carried out in accordance with the procedures given ii a) to e) in the sequence as given.
a) First longitudinal loading
For a tractor with at least 50 % of its tractor mass on the rear wheels, the longitudinal IoacMng shall be applied
from the rear, For other tractors the longitudinal loading shall be applied from the front,
b) First crushing test
The first crushing lest shall be applied at the same end of the ROPS as the longitudinal loading.
C) Loading from the side
In the case of an offset seat and/or non-symmetrical strength of the ROPS. the side loading shall be on the side most likely to lead to entenng the clearance zone.
d) S.cond crushing teat
The second crushing test shall be applied at the opposite end of the ROPS to the longitudinal loading. In the case of two-post designs. It may be at the same point as in b).
ISO 5700 pdf download – Tractors for agriculture and forestry 一Roll-over protective structures (RoPs)—Static test method and acceptance conditions
