Spike puller and method for pulling a railroad spike of a track
AssigneeRobel Bahnbaumaschinen GmbH
InventorsOtto Widlroither, Bernhard Koch, Thomas Hoelzlwimmer
Life of this patent
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Abstract
A spike puller for pulling a railroad spike of a track includes a housing, a linear displacement unit mounted at the housing, and a claw unit for gripping the railroad spike. The claw unit is displaceable in a linear manner relative to the housing in a displacement direction by using the linear displacement unit. The linear displacement unit includes a hollow tube which is guided in the housing. A method for pulling a railroad spike of a track is also provided.
Claims14
A spike puller for pulling a railroad spike of a track, the spike puller comprising:
- a housing;
- a linear displacement unit mounted at said housing, said linear displacement unit including a hollow tube guided in said housing;
- a claw unit for engaging a railroad spike, said claw unit being displaceable by said linear displacement unit in a linear manner relative to said housing in a displacement direction;
- and
- a guiding portion having a length LFA, said hollow tube having a length LH, and said lengths having a length ratio of:
- 0.2≤LFA/LH≤1.0.
A spike puller for pulling a railroad spike of a track, the spike puller comprising:
- a housing;
- a linear displacement unit mounted at said housing, said linear displacement unit including a hollow tube guided in said housing;
- a claw unit for engaging a railroad spike, said claw unit being displaceable by said linear displacement unit in a linear manner relative to said housing in a displacement direction;
- and
- a guiding portion having an area AFA, said hollow tube having an area AH, and said areas having an area ratio of:
- 0.2≤AFA/AH≤1.0.
A spike puller for pulling a railroad spike of a track, the spike puller comprising:
- a housing;
- a linear displacement unit mounted at said housing, said linear displacement unit including a hollow tube guided in said housing;
- at least one guiding element disposed between said housing and said hollow tube;
- a claw unit for engaging a railroad spike, said claw unit being displaceable by said linear displacement unit in a linear manner relative to said housing in a displacement direction;
- and
- a guiding portion having a length LFA, said guiding element having a length LFE, and said lengths having a length ratio of:
- 0.02≤LFE/LFA≤1.0.
A spike puller for pulling a railroad spike of a track, the spike puller comprising:
- a housing;
- a linear displacement unit mounted at said housing, said linear displacement unit including a hollow tube guided in said housing;
- at least one guiding element disposed between said housing and said hollow tube;
- a claw unit for engaging a railroad spike, said claw unit being displaceable by said linear displacement unit in a linear manner relative to said housing in a displacement direction;
- and
- a guiding portion having an area AFA, said guiding element having an area AFE, and said areas having an area ratio of:
- 0.02≤AFE/AFA≤1.0.
A spike puller for pulling a railroad spike of a track, the spike puller comprising:
- a housing having an upper housing portion and a lower housing portion;
- a linear displacement unit mounted at said housing, said linear displacement unit including a hollow tube guided in said housing, and said linear displacement unit including a threaded spindle;
- a claw unit for engaging a railroad spike, said claw unit being displaceable by said linear displacement unit in a linear manner relative to said housing in a displacement direction;
- at least one bearing disposed at said upper housing portion for bearing said threaded spindle;
- and
- said hollow tube being guided in said lower housing portion.
A method for pulling a railroad spike of a track, the method comprising:
- providing a spike puller for pulling a railroad spike of a track, the spike puller including:
- a housing,
- a linear displacement unit mounted at the housing, the linear displacement unit including a hollow tube guided in the housing, and
- a claw unit for engaging a railroad spike, the claw unit being displaceable by the linear displacement unit in a linear manner relative to the housing in a displacement direction;
- positioning the spike puller above the railroad spike and engaging the claw unit around the railroad spike;
- and
- driving the linear displacement unit, causing the hollow tube to be linearly displaced and guided within the housing and the railroad spike to be pulled out of the track.
Dependencies are inferred from the claim text.