초록 ▼

In a track maintenance vehicle, a cross tie exchanging mechanism is mounted on the vehicle comprising jaws which grip the end of the cross tie to be removed and operate to pull the cross tie from the road bed laterally from beneath the track rail and also operate to push a new cross tie laterally be

In a track maintenance vehicle, a cross tie exchanging mechanism is mounted on the vehicle comprising jaws which grip the end of the cross tie to be removed and operate to pull the cross tie from the road bed laterally from beneath the track rail and also operate to push a new cross tie laterally beneath the rails into the road bed. Rail clamps are provided to grip each rail at two spaced positions along each track rail to prevent the track rail from flexing when the track rail is unfastened from the cross tie to be removed. The rail clamps are also used to lift the track rails clear of the cross ties prior to operation of the tie exchanging mechanism to remove and replace a cross tie. A beam member supports the rail clamp so that the rails are laterally stabilized when lifted. The beam member is continuously laterally positioned independent of the lateral moveent of the vehicle by a guide member relative to the rails when the rail clamp is not engaged with the rails.

대표청구항 ▼

In a railway track maintenance apparatus comprising a railway vehicle having a pair of front railway wheels and a pair of rear railway wheels and adapted for movement along the raiIs of a railway and means mounted on said vehicle between said pairs of railway wheels for removing and replacing ties f

In a railway track maintenance apparatus comprising a railway vehicle having a pair of front railway wheels and a pair of rear railway wheels and adapted for movement along the raiIs of a railway and means mounted on said vehicle between said pairs of railway wheels for removing and replacing ties from beneath the rails of said railway, the improvement comprising the combination of: means supported by a beam member extending laterally relative to said rails for clamping the rails beneath said vehicle between said front railway wheels and sair rear railways wheels; means supported by said vehicle for lifting said beam member to lift said clamped rails relative to said vehicle to a positiong clear of a tie for removal and insertion of ties beneath said rails; and lateral stabilizing means supported by said vehicle including said beam member for laterally stabilizing said rails, when lifted, against lateral displacement, and for continuously laterally positioning said beam member relative to said rails in response to a guide member engaging said rails when said clamping means is free from engagement with said rail and said lateral positioning being independent of lateral movement of said vehicle determined by said pairs of wheels engaging said rails.