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A spike puller can be seen on the right side of this image. A spike puller is a railroad maintenance of way machine designed to remove rail spikes from ties. [1] The spike puller automates the task of spike removal, allowing it to be done at a rate greater than can be achieved by hand.
The screw is drilled out with the appropriate drill and drill bushing. The extractor is then hammered into the hole with a brass hammer, because a steel hammer is more likely to cause the extractor to break. The appropriate special nut is then attached to the end of the extractor. The nuts can then be turned with a wrench to remove the screw. [1]
The end of the lifting arm has a gripper for picking up ties, and a movable wrist to allow the tie to be positioned. Often a small trolley is connected to the tie crane by a drawbar, for either storage of new ties to be placed into the track, or for taking away old ties that have been removed. [ 1 ]
The spiker moves to a tie that needs spikes inserted. The spiker uses claws to grab the tie and hold it in place. Workers use a joystick to direct the rams to the locations where spikes are to be inserted, and then activate the rams to drive the spikes into the rail. The spiker releases the tie, and moves on to the next tie to repeat the process.
A rod end bearing, also known as a heim joint (N. America) or rose joint (U.K. and elsewhere), is a mechanical articulating joint. Such joints are used on the ends of control rods, steering links , tie rods , or anywhere a precision articulating joint is required, and where a clevis end (which requires perfect 90-degree alignment between the ...
A tie rod or tie bar (also known as a hanger rod if vertical) is a slender structural unit used as a tie and (in most applications) capable of carrying tensile loads only. It is any rod or bar-shaped structural member designed to prevent the separation of two parts, as in a vehicle. Tie rods and anchor plates in the ruins of Coventry Cathedral