Soil stabilizer with track apparatus

• US 8,291,993 B2
• Filed: 12/18/2006
• Issued: 10/23/2012
• Est. Priority Date: 12/08/2003
• Status: Active Grant

• Current Assignee: ATI Incorporated (CNH Industrial N.V.)
• Original Assignee: ATI Incorporated (CNH Industrial N.V.)
• Inventors: Juncker, Kenneth J.
• Primary Examiner(s): MCGOWAN, JAMIE LOUISE
• Application Number:
  US11/640,789
• Publication Number:
  US 20070102173A1
• Time in Patent Office: 2,136 Days
• Field of Search: 172/80, 172/123, 180/900, 180/9.1, 180/9.21, 180/9.3, 180/9.26, 180/9.46, 305/120, 305/122, 305/127, 305/131, 305/135, 305/143, 305/148
• US Class Current: 172/80
• CPC Class Codes: E01C 21/00 Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder recycling in place or on the road involving soil stabilisation E01C23/065 ; stabilising soil under existing surfacing E01C23/10; soil-conditioning or soil-stabilising materials C09K17/00; soil consolidation in general E02D3/12
• CPC Class Codes: E02F 5/08 with digging wheels turning round an axis E02F5/109 takes precedence; with digging wheels per se E02F3/18
• CPC Class Codes: E02F 9/02 Travelling-gear, e.g. associated with slewing gears drives therefor E02F9/20; for motor vehicles B60B, B60G; undercarriages for locomotives or railroad cars B61F; track-laying vehicles B62D; for cranes B66C23/18

Abstract

A soil stabilizer for treating ground surface includes a stabilizer frame, a rotor rotatably mounted thereon, the rotor being movable such that the rotor may engage various depths of earth, a rotatable axle, and a track apparatus mounted on the rotatable axle, the track apparatus supporting the stabilizer frame and providing for movement of the stabilizer frame and rotor across the ground surface. The track apparatus may include a continuous flexible track having an upper length and a ground-engaging lower length and including an inner surface, an axle wheel mountable to the rotatable axle for rotational movement therewith, the axle wheel engaging the inner surface of the flexible track along the upper length to drive the flexible track in response to rotation of the axle, and a track apparatus frame for mounting the axle wheel.

Claims

1. A soil stabilizer for treating ground surface, comprising:

a stabilizer frame;

a rotor rotatably mounted with respect to the stabilizer frame, the rotor movable with respect to the ground surface such that the rotor may engage various depths of earth to cut and remove the earth;

a rotatable drive axle connected with respect to the stabilizer frame and adapted for moving the stabilizer frame and rotor across the ground; and

a track apparatus operatively mounted on the rotatable axle surface through a track apparatus frame for positioning the track apparatus with respect to the stabilizer frame and rotor to provide improved contact of the rotor with the ground surface and improved traction of the soil stabilizer, the track apparatus including;

a continuous flexible track having an upper length and a ground-engaging lower length and including an inner surface;

a tensioner for maintaining tension on the continuous flexible track, the tensioner comprising a main-cylinder housing connected to the track apparatus frame, the main-cylinder housing extending along an axis for maintaining the rotor in engagement with the ground and reducing vibration and bounce of the stabilizer frame and rotor as the stabilizer is moved across the ground;

an axle wheel mountable to the rotatable drive axle for rotational movement therewith, the axle wheel engaging the inner surface of the continuous flexible track along the upper length to drive the continuous flexible track in response to rotation of the axle; and

a leading idler arm having a leading idler wheel rotatably mounted on a leading idler axle and engaging the inner surface of the continuous flexible track, the leading idler axle defining a notch which allows the tensioner to extend, allowing the leading idler wheel to maintain contact of the continuous flexible track with the ground surface as the stabilizer is moved across the ground.

2. The soil stabilizer of claim 1 having two of the track apparatus axially aligned, each on an axle end.

3. The soil stabilizer of claim 2 wherein the rotatable drive axle having the track apparatus is a front axle, the soil stabilizer further including:

a rear rotatable axle connected with respect to the stabilizer frame;

a rear track apparatus operatively mounted on the rear rotatable axle, the rear track apparatus including;

a continuous flexible track having an upper length and a ground-engaging lower length and including an inner surface;

a rear axle wheel mountable to the rotatable rear axle for rotational movement therewith, the rear axle wheel engaging the inner surface of the flexible track along the upper length thereof; and

a rear track apparatus frame for mounting the rear axle wheel.

4. The soil stabilizer of claim 2 further including a mixing chamber with a bottom surface movable into position engaging the ground surface such that the rotor lowered into contact with the earth passes through the bottom surface to pull soil into the chamber where the soil is treated, the mixing chamber having a rear exit for passing treated soil therethrough.

5. The soil stabilizer of claim 2 wherein each track apparatus includes leading and trailing idler wheels engaging the inner surface of the track and at least one bogie wheel engaging the inner surface of the track only in a middle portion of the lower length of the track, and wherein:

the track apparatus frame is of a uni-body construction such that it includes fixed-mounts in fixed relative positions, each fixed-mount defining an axis;

the axle wheel is rotatably mounted to one of the fixed-mounts and turns on the respective fixed-mount axis;

one of the idler wheels is rotatably mounted to one of the fixed-mounts and turns on the respective fixed-mount axis,

the at least one bogie wheel is rotatably mounted to one of the fixed-mounts and turns on the respective fixed-mount axis, and

an idler-mounting bracket pivotably mounted to another of the fixed-mounts and pivots on the respective fixed-mount axis, the bracket having an idler-mount defining an idler-mount axis at which the other idler wheel is rotatably mounted in variable positions with respect to the apparatus frame.

6. The soil stabilizer of claim 5 wherein the track apparatus frame includes a spindle hub for rotatably receiving the rotatable axle and defines a lateral recess receiving the axle wheel.

7. The soil stabilizer of claim 5 wherein:

the fixed-mounts include apertures for receiving axles therethrough;

the trailing idler wheel is rotatably mounted to one of the fixed-mounts; and

the leading idler wheel is rotatably mounted to the idler-mount.

8. The soil stabilizer of claim 5 wherein the trailing idler wheel includes a pair of axially-aligned wheels and the leading idler wheel comprises a pair of axially-aligned wheels.

9. The soil stabilizer of claim 5 wherein the track apparatus further includes a leading idler assembly secured with respect to the track apparatus frame at one of the fixed mounts, the leading idler assembly including the leading idler wheel engaging the flexible track.

10. The soil stabilizer of claim 2 wherein each flexible track apparatus includes spaced lugs projecting from the inner surface, each lug terminating in a distal surface spaced inwardly from the main inner surface, and wherein the axle wheel comprises:

a central hub portion mountable on the axle for rotational movement therewith;

a radially-extending portion terminating in a circumferential edge; and

a peripheral portion affixed to the circumferential edge and having outwardly-facing lug-engagement surfaces positioned for engagement with the distal surfaces of the track lugs.

11. The soil stabilizer of claim 10 wherein the peripheral portion includes an outer rim forming the outwardly-facing lug-engaging surfaces.

12. The soil stabilizer of claim 10 wherein each lug-engagement surface extends in an axial direction parallel to the drive axis such that each lug-engagement surface is a portion of a cylinder.

13. The soil stabilizer of claim 12 wherein the axle wheel is substantially free of side structure in positions which are laterally adjacent to the lug-engagement surfaces between adjacent pairs of the drive members and radially beyond the circumferential edge, whereby the track lugs are free to adjust their precise positions of engagement with the lug-engagement surfaces.

14. The soil stabilizer of claim 10 wherein the peripheral portion includes peripherally-spaced cross-members affixed to the circumferential edge and forming the outwardly-facing lug-engaging surfaces.

15. The soil stabilizer of claim 10 wherein the outwardly-facing lug-engagement surfaces are substantially planar.

16. The soil stabilizer of claim 10 wherein the axle wheel is substantially free of side structure in positions laterally adjacent to the lug-engagement surfaces and radially beyond the circumferential edge, whereby the track lugs are free to adjust their precise positions of engagement with the lug-engagement surfaces.

17. The soil stabilizer of claim 10 wherein:

the peripheral portion affixed to the circumferential edge has radially-projecting drive members defining lug-receiving gaps therebetween,

the outwardly-facing lug-engagement surfaces are within the lug-receiving gaps in position for engagement with the distal surfaces of the track lugs, and

the axle wheel is substantially free of side structure in positions which are laterally adjacent to the lug-engagement surfaces between adjacent pairs of the drive members and radially beyond the circumferential edge,

whereby the track lugs are free to adjust their precise positions of engagement with the lug-engagement surfaces.