Pantograph pushing device for vehicle, has body of hydraulic jack, which is in pivot connection with central articulation of central cross, where ends of rods acting on actuating arm is articulated on reference arm

摘要

#CMT# #/CMT# The device has a sequence of three articulated assemblies forming a cross (6), where the assemblies are formed by actuating arm (3), reference arm (4) and a passive arm (5) of same length articulated in their medium. A central cross (61) is articulated at each peripheral cross (62) at ends of the arms. A hydraulic jack (7) controls deployment and fold of the cross and includes a body (71) projected by its ends opposed to rods (72). The body is in pivot connection with central articulation of the cross (61). Ends of the rods acting respectively on the arm (3) are articulated on the arm (4). #CMT#USE : #/CMT# Device for pushing a pantograph that is used in a vehicle to carry out work or operation in vertical direction and used as a freight elevator, scissor lift or canal lift. #CMT#ADVANTAGE : #/CMT# The body of the jack is crossed by a pin that assures the central articulation of the central cross and corresponding symmetrical cross in order to assure the pivot connection of the body with respect to the central cross. The articulations of the rods on the arm are assured by a pair of rods such that the pair of rods actuates a pair of arms through a same pin, thus positioning the jack to contribute dynamic rigidity of the deployment assembly and distribution of efforts during the deployment of pantograph. The device pushes the pantograph to be in vertical direction such that the scissor lift reaches different positions in a space. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a side view of a side of a pantograph device. 3 : Actuating arm 4 : Reference arm 5 : Passive arm 6 : Cross 7 : Hydraulic jack 61 : Central cross 62 : Peripheral cross 71 : Body 72 : Rods.