DEVICE FOR TESTING EXTERIOR FIRE ESCAPE STAIR FOOT Russian patent published in 2022 - IPC G01M5/00 G01N3/02 

FIELD: construction industry.

SUBSTANCE: invention relates to devices for testing building structures. The device contains a control load, a device for controlling the magnitude of the force generated by the control load, a drive, a system of distribution traverses and a load mechanism including a rack and vertical pushers located in the same plane, each of which contains a block, a self-aligning movable support and a rod that forms a kinematic connection with the rack equivalent to a translational kinematic pair, and a system of flexible links. The load mechanism rack contains one fixed adjustable support, one step block and is mounted on the surface of the test site. The pusher blocks are made in steps, and the flexible intermediate links are fixed with two ends sequentially on the internal pusher blocks and the rack block and form kinematic envelope pairs with the blocks. The input flexible links are fixed at one end on the blocks of external pushers and form kinematic bending pairs with them, and the second ends are fastened with flexible links connected to the device for creating a control force.

EFFECT: increasing the mobility of the device and reducing its material consumption, as well as increasing the level of usability.

6 cl, 2 dwg