DEVICE TO BLOCK TELESCOPIC SUPPORT OF CONSTRUCTION MACHINE AND METHOD TO PROTECT CONSTRUCTION MACHINE AGAINST DRIVING AWAY Russian patent published in 2014 - IPC B66C23/78 

FIELD: machine building.

SUBSTANCE: invention relates to machine building. A device to block the telescopic support of a construction machine comprises a casing welded to the outer tube of the telescopic support, the casing is provided with a through round hole having a groove in the vertical plane which is ended by an annular groove, and a steel pin provided with a cross stud to be placed in the through round hole at vertical stud positioning with a rest against the annular groove and insertion of its other end through the holes in the outer and inner tubes of the telescopic support. The other end of the steel pin is fitted by a lock of "washer" type to fix the said pin against slipping in respect to the casing at horizontal stud positioning with a rest against the annular groove due to the thrust of the "washer" lock protrusion against the casing.

EFFECT: prevention of spontaneous or unathorised movement of a construction machine.

2 cl, 1 dwg