Shiftable cabin

Patent metadata

Field	Value
Publication number	US-12134867-B2
Application number	US-202117562136-A
Country	US
Kind code	B2
Filing date	Dec 27, 2021
Priority date	Aug 5, 2021
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

A road milling machine includes a machine frame having a longitudinal axis. A plurality of ground engaging units support the machine frame from a ground surface. A milling drum is supported from the machine frame. An operator's station is supported from the machine frame by a support linkage configured to move the operator's station laterally between an inner position and an outer position relative to the machine frame. The support linkage includes at least one pivot link extending between the machine frame and the operator's station and oriented to pivot about a pivot axis extending parallel to the longitudinal axis of the machine frame. The operator's station in the outer position extends laterally partially beyond the machine frame on one of the left and right edges of the machine frame, the outer position being at a higher elevation than the inner position relative to the machine frame.

First claim

What is claimed is:

1. A self-propelled road milling machine, comprising:
a machine frame having a longitudinal axis extending between a front and a rear of the machine frame, the machine frame including left and right edges;
a plurality of ground engaging units for supporting the machine frame from a ground surface;
a milling drum supported from the machine frame;
an operator's station; and
a support linkage including at least one pivot link extending between the machine frame and the operator's station, the at least one pivot link being oriented to pivot relative to the machine frame about a pivot axis extending parallel to the longitudinal axis of the machine frame, the support linkage being configured to move the operator's station laterally in a lateral direction transverse to the longitudinal axis of the machine frame between an inner position and an outer position relative to the machine frame, the outer position extending laterally partially beyond one of the left and right edges of the machine frame and the outer position being at a higher elevation than the inner position relative to the machine frame, the at least one pivot link being located below the operator's station and arranged to pivot from a less vertical orientation to a more vertical orientation as the operator's station is moved from the inner position to the outer position.

2. The self-propelled road milling machine of claim 1 , further comprising:
a hydraulic lifting cylinder connected to at least one of the support linkage and the operator's station, the hydraulic lifting cylinder being configured to move the operator's station between the inner and outer positions.

3. The self-propelled road milling machine of claim 2 , further comprising:
a hydraulic accumulator hydraulically communicated with the hydraulic lifting cylinder and configured to provide a hydraulic spring support to the operator's station at least when the operator's station is in the outer position.

4. The self-propelled road milling machine of claim 3 , further comprising:
a hydraulic flow restrictor disposed between the hydraulic lifting cylinder and the hydraulic accumulator and configured to restrict flow of hydraulic fluid in at least one direction between the hydraulic lifting cylinder and the hydraulic accumulator to dampen the hydraulic spring support of the operator's station.

5. The self-propelled road milling machine of claim 2 , wherein:
the hydraulic lifting cylinder is a smart cylinder including an integral extension sensor, the integral extension sensor being configured to provide an extension signal corresponding to an extension of the hydraulic lifting cylinder and a corresponding position of the operator's station.

6. The self-propelled road milling machine of claim 1 , further comprising:
a lifting actuator connected to at least one of the support linkage and the operator's station.

7. The self-propelled road milling machine of claim 6 , wherein:
the lifting actuator is connected between the machine frame and the operator's station.

8. The self-propelled road milling machine of claim 6 , further comprising:
a proximity sensor configured to detect the presence of the operator's station in the outer position relative to the machine frame.

9. The self-propelled road milling machine of claim 1 , wherein:
the support linkage is configured to move the operator's station laterally between the inner position and the outer position without any fore or aft movement of the operator's station relative to the machine frame such that a footprint of the operator's station over the machine frame when moving between the inner and outer positions is minimized.

10. The self-propelled road milling machine of claim 1 , wherein:
the outer position of the operator's station, as compared to the inner position, provides a human operator on the operator's station both an improved view of an area of the ground surface adjacent the milling drum due to a laterally outward movement of the operator's station from the inner position to the outer position, and an improved overall view around the self-propelled road milling machine due to the higher elevation of the outer position.

11. The self-propelled road milling machine of claim 1 , wherein:
when the operator's station is in the inner position a stationary footprint of the operator's station falls entirely between the left and right edges of the machine frame.

12. A self-propelled road milling machine, comprising:
a machine frame having a longitudinal axis extending between a front and a rear of the machine frame, the machine frame including left and right edges;
a plurality of ground engaging units for supporting the machine frame from a ground surface;
a milling drum supported from the machine frame;
an operator's station; and
a support linkage including at least one pivot link extending between the machine frame and the operator's station, the at least one pivot link being oriented to pivot relative to the machine frame about a pivot axis extending parallel to the longitudinal axis of the machine frame, the support linkage being configured to move the operator's station laterally in a lateral direction transverse to the longitudinal axis of the machine frame between an inner position and an outer position relative to the machine frame, the outer position extending laterally partially beyond one of the left and right edges of the machine frame and the outer position being at a higher elevation than the inner position relative to the machine frame;
wherein the plurality of ground engaging units includes at least one front ground engaging unit and at least two rear ground engaging units, and at least one of the rear ground engaging units is a movable rear ground engaging unit movable relative to the machine frame between a retracted position and an extended position;
wherein the milling drum is located such that when the movable rear ground engaging unit is in the retracted position the movable rear ground engaging unit is located ahead of the milling drum;
wherein the outer position of the operator's station extends laterally partially beyond one of the left and right edges of the machine frame adjacent the movable rear ground engaging unit;
wherein self-propelled road milling machine further includes at least two lifting columns extending between the at least two rear ground engaging units and the machine frame for raising and lowering the machine frame relative to the ground surface, one of the lifting columns being a movable lifting column attached to the movable rear ground engaging unit; and
wherein the operator's station includes a recess configured to at least partially receive the movable lifting column when the movable rear ground engaging unit is in the extended position and the operator's station is in the outer position.

13. The self-propelled road milling machine of claim 12 , wherein:
when the movable rear ground engaging unit is in the extended position the two rear ground engaging units are laterally aligned and the milling drum is located laterally between the two rear ground engaging units; and
the operator's station when in the outer position is at least partially located above a location in which the movable rear ground engaging unit would be located if the movable rear ground engaging unit was in the extended position.

14. A self-propelled road milling machine, comprising:
a machine frame having a longitudinal axis extending between a front and a rear of the machine frame, the machine frame including left and right edges;
a plurality of ground engaging units for supporting the machine frame from a

Assignees

• Wirtgen Gmbh

Inventors

• Drumm Stephan

Classifications

• E02F9/166

  movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins (seats for vehicles in general B60N2/00) · CPC title

• B62D33/063

  movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other · CPC title

• F15B1/021

  used for damping · CPC title

• E01C2301/30

  Cabin details · CPC title

• E01C23/127

  rotary, e.g. rotary hammers · CPC title