Twin suspension/haulage cable gondola lift

An overhead transport installation comprising:

• terminals having each two pulleys
• two parallel suspension haulage cables passing over said pulleys and being continuously driven at the same speed while extending in line in a horizontal plane with constant spacing,
• towers including cable support rollers for supporting said two cables at a same level,
• gondolas coupled in line to said two cables and each having a suspension bar hanging in the vertical symmetry plane of the cables and a carriage whereon said suspension bar is articulated,
• at least one pair of detachable grips secured to said carriage, one grip cooperating with one cable and the other grip of said pair cooperating with the other of said two cables for coupling the carriage to the two cables in line and to disconnect the carriage inside the terminals to allow for embarkation and disembarkation of the passengers of the gondola at a reduced speed, each grip having a body that rests on the upper face of the cable in closed position of the grip and protrudes slightly upwards and a pair of jaws protruding downwards from said body to surround and clamp the cable while the end of the jaws become substantially level with the lower face of the cable in order to facilitate passing around the cable support rollers,
• cable guide rollers disposed in the terminals in order to deviate said cables so as to modify slightly the spacing to each other and to allow for disengagement or engagement of the carriage disconnected from the cables, and
• transfer rails in the terminals for supporting the carriage disconnected from the cables, the trajectory of the rails bending downwards with respect to the cables on the travel section corresponding to the modified spacing of the cables for disengagement of the carriage and bending upwards in the travel section for engagement of the carriage.