Slewing assembly for a cold planer

Patent metadata

Field	Value
Publication number	US-10190270-B2
Application number	US-201615213644-A
Country	US
Kind code	B2
Filing date	Jul 19, 2016
Priority date	Jul 19, 2016
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A slewing assembly for providing a rotational movement of a loading conveyor pivotally supported on a cold planer is provided. The slewing assembly includes a frame-side structure and a conveyor-side structure. The slewing assembly includes a shaft pin disposed about a vertical axis, and pivotally connecting the frame-side structure and the conveyor-side structure. The slewing assembly also includes an actuator arrangement configured to generate a controlled bi-directional rotational movement of the shaft pin. The slewing assembly further includes a spline arrangement formed on the shaft pin and configured to transfer the controlled bi-directional rotational movement of the shaft pin as a controlled bi-directional rotational movement of the conveyor-side structure. The controlled bi-directional rotational movement of the conveyor-side structure provides the rotational movement of the loading conveyor, about the vertical axis, with respect to the frame.

First claim

What is claimed is:

1. A slewing assembly for providing a rotational movement of a loading conveyor pivotally supported on a cold planer, the slewing assembly comprising:
a frame-side structure extending from a frame towards the loading conveyor;
a conveyor-side structure extending from the loading conveyor towards the frame-side structure;
a shaft pin disposed about a vertical axis, and pivotally connecting the frame-side structure and the conveyor-side structure;
one or more frame bearings disposed about the shaft pin between the frame-side structure and the conveyor-side structure;
an actuator arrangement connected to the shaft pin and configured to generate a controlled bi-directional rotational movement of the shaft pin; and
a spline arrangement formed on the shaft pin and configured to transfer the controlled bi-directional rotational movement of the shaft pin as a controlled bi-directional rotational movement of the conveyor-side structure, wherein the controlled bi-directional rotational movement of the conveyor-side structure provides the rotational movement of the loading conveyor, about the vertical axis, with respect to the frame.

2. The slewing assembly of claim 1 , wherein the actuator arrangement comprises a yoke fixedly coupled with the shaft pin such that a controlled bi-directional rotational movement of the yoke provides the controlled bi-directional rotational movement of the shaft pin.

3. The slewing assembly of claim 2 , wherein the actuator arrangement further comprises a pair of hydraulically actuated cylinders operatively arranged in a parallel configuration with respect to each other, each hydraulically actuated cylinder having a first end and a second end respectively, wherein the first ends are coupled to the frame-side structure and the second ends are coupled to lateral opposite ends of the yoke, and wherein extension of one hydraulically actuated cylinder of the pair of hydraulically actuated cylinders and simultaneous retraction of other hydraulically actuated cylinder of the pair of hydraulically actuated cylinders generates the controlled bi-directional rotational movement of the yoke.

4. The slewing assembly of claim 1 , wherein the actuator arrangement comprises a motor operatively coupled with the shaft pin and configured to generate the controlled bi-directional rotational movement of the shaft pin.

5. The slewing assembly of claim 4 , wherein the motor is a hydraulic motor.

6. The slewing assembly of claim 1 , wherein the actuator arrangement is located on a top potion of the frame-side structure.

7. The slewing assembly of claim 1 , wherein the one or more frame bearings are configured to facilitate the controlled bi-directional rotational movement of the conveyor-side structure with respect to the frame-side structure.

8. The slewing assembly of claim 7 further comprising, one or more thrust washers associated with the one or more frame bearings, and configured to bear axial loads experienced by the one or more frame bearings.

9. The slewing assembly of claim 1 further comprising, one or more pivot bearings associated with the spline arrangement, and configured to facilitate transfer of the controlled bi-directional rotational movement of the shaft pin to the conveyor-side structure.

10. A slewing assembly for providing a rotational movement of a loading conveyor pivotally supported on a cold planer, the slewing assembly comprising:
a frame-side structure extending from a frame towards the loading conveyor;
a conveyor-side structure extending from the loading conveyor towards the frame-side structure;
a shaft pin disposed about a vertical axis, and pivotally connecting the frame-side structure and the conveyor-side structure;
a yoke fixedly coupled with the shaft pin such that a controlled bi-directional rotational movement of the yoke provides a controlled bi-directional rotational movement of the shaft pin;
a pair of hydraulically actuated cylinders operatively arranged in a parallel configuration with respect to each other, each hydraulically actuated cylinder having a first end and a second end respectively, wherein the first ends are coupled to the frame-side structure and the second ends are coupled to lateral opposite ends of the yoke, and wherein extension of one hydraulically actuated cylinder of the pair of hydraulically actuated cylinders and simultaneous retraction of other hydraulically actuated cylinder of the pair of hydraulically actuated cylinders generates the controlled bi-directional rotational movement of the yoke;
a spline arrangement formed on the shaft pin and configured to transfer the controlled bi-directional rotational movement of the shaft pin as a controlled bi-directional rotational movement of the conveyor-side structure, wherein the controlled bi-directional rotational movement of the conveyor-side structure provides the rotational movement of the loading conveyor, about the vertical axis, with respect to the frame; and
one or more frame bearings disposed about the shaft pin between the frame-side structure and the conveyor-side structure.

11. The slewing assembly of claim 10 , wherein the pair of hydraulically actuated cylinders is located on a top portion of the frame-side structure.

12. The slewing assembly of claim 10 , wherein the pair of hydraulically actuated cylinders and the one or more frame bearings are configured to facilitate the controlled bi-directional rotational movement of the conveyor-side structure with respect to the frame-side structure.

13. The slewing assembly of claim 12 further comprising, one or more thrust washers associated with the one or more frame bearings, and configured to bear axial loads experienced by the one or more frame bearings.

14. The slewing assembly of claim 10 further comprising, one or more pivot bearings associated with the spline arrangement, and configured to facilitate transfer of the controlled bi-directional rotational movement of the shaft pin to the conveyor-side structure.

15. A cold planer comprising:
a frame supported by a plurality of ground engaging members, the frame defining a forward end in the cold planar;
a milling drum supported by the frame and configured to remove material from a ground surface;
a loading conveyor pivotally supported on the frame at the forward end thereof, the loading conveyor configured to receive the material and to convey the material to a location off of the cold planer; and
a slewing assembly for providing a rotational movement of the loading conveyor, about a vertical axis, with respect to the frame, the slewing assembly comprising:
a frame-side structure extending from the forward end of the frame towards the loading conveyor;
a conveyor-side structure extending from the loading conveyor towards the frame-side structure;
a shaft pin disposed about a vertical axis, and pivotally connecting the frame-side structure and the conveyor-side structure;
an actuator arrangement connected to the shaft pin and configured to generate a controlled bi-directional rotational movement of the shaft pin;
a spline arrangement formed on the shaft pin and configured to transfer the controlled bi-directional rotational movement of the shaft pin as a controlled bi-directional rotational movement of the conveyor-side structure, wherein the controlled bi-directional rotational movement of the conveyor-side structure provides the rotational movement of the loading conveyor, about the vertical axis, with respect to the frame; and
one or more frame bearings disposed about the shaft pin between the frame-side structure and the conveyor-side structure, and configur

Assignees

• Hirman Colton J
• Caterpillar Paving Products Inc

Inventors

• Hirman Colton J

Classifications

• E01C23/088 Primary

  Rotary tools, e.g. milling drums {(for forming recesses to receive marking materials E01C23/0946)} · CPC title

• B65G41/002

  Pivotably mounted · CPC title

• B65G41/008

  frames mounted on wheels or caterpillar (for movement on rail tracks B65G41/02) · CPC title