Swiveling roll bar

#The invention relates to a swiveling roll bar for vehicles, especially for construction vehicles, with two vertical carriers, each one of which has one pair of spars, which are connected with each other through swivelable link joints. Further, the link joints have both a lock as well as a stop, which limit the swivel area of the roll bar.

#Work vehicles, especially construction vehicles, are often equipped with rollover protective fixtures and roll bars, which are fixed on the vehicle frame and extend upwards, to protect the operator in case of a overturning of the vehicle. If the work vehicle is equipped with a driver's cabin, the roll bar is normally integrated in the driver's cabin. However, if the work vehicle is furnished without a driver's cabin, the roll bar is normally built separately, whereby the roll bar is normally built as a U-shaped bar, whose free ends are fixed on the vehicle frame and whose cross members are essentially arranged above the head of the operator. Due to this, the roll bar is frequently that part of the vehicle that stretches farthest upwards.

#Such an upward jutting roll bar can be disadvantageous, for example, during transport of the vehicle or during its operation.

#Preferred embodiments of the invention are explained below in more detail on the basis of the attached drawings. The drawings show:

#FIG. 1 A side view of a roller without driver's cabin, with a swiveling roll bar both in the arrested and in the swiveled down state;

#FIG. 2 A side view of a swiveling roll bar with swivel bar lock in the locked state;

#In the various embodiments according to the invention shown in the following figures, the same components are indicated with the same reference signs.

#FIG. 1 shows the side view of a cylinder 10 with a swiveling roll bar 11, which has a stationary spar 12 and a swiveling spar 13. The roll bar 11 is displayed not only in the locked but also in the down-swung state. The stationary spar 12 is fixed with the cylinder frame of the cylinder 10 by means of bolt connections 14.

#As it can be seen in FIG. 1, a link joint 15 is attached at the end the swivelable spar 13. The joint stiffener 15 consists, in the shown example, of a U-shaped tubular segment, whereby the U-shaped tubular segment 15 is so arranged that its open side corresponds to that side of the roll bar 11, on which the hinge 16 is attached. The U-shaped tubular segment 15 is welded with the swivelable spar 13 and is connected with the hinge 16, so that the U-shaped tubular segment 15, together with the welded, upper, swivelable hinge 13, can swivel about the hinge 16. The hinge 16 is welded with the stationary spar 12.