Apparatus and method for locking an adjustable width axle assembly of a crop sprayer

• US 6,206,125 B1
• Filed: 02/02/2000
• Issued: 03/27/2001
• Est. Priority Date: 02/02/2000
• Status: Expired due to Term

• Current Assignee: Exel Industries (Exel)
• Original Assignee: Equipment Technologies, Inc.
• Inventors: Weddle, Kenneth E.
• Primary Examiner(s): Johnson, Brian L.
• Assistant Examiner(s): FISCHMANN, BRYAN R
• Application Number:
  US09/496,413
• Time in Patent Office: 419 Days
• Field of Search: 180/62, 180/906, 180/209, 180/340, 180/905, 280/638, 301/128
• US Class Current: 180/209
• CPC Class Codes: B60B 2310/305 by screwing
• CPC Class Codes: B60B 2310/306 by clamping or wedging, e.g. by clamping inserts as joining means
• CPC Class Codes: B60B 2360/1444 of rectangular cross section
• CPC Class Codes: B60B 35/001 Axles of the portal type, i.e. axles designed for higher ground clearance
• CPC Class Codes: B60B 35/1027 comprising a clamping mechanism
• CPC Class Codes: B60B 35/1054 hydraulically
• CPC Class Codes: B60B 35/109 the element is an axle part
• CPC Class Codes: B60B 35/127 using universal joints
• CPC Class Codes: B60B 35/14 composite or split, e.g. half- axles; Couplings between axle parts or sections
• CPC Class Codes: B60G 2206/30 Constructional features of rigid axles
• CPC Class Codes: B60G 2300/083 Boom carrying vehicles, e.g. for crop spraying
• CPC Class Codes: B60G 2300/40 Variable track or wheelbase vehicles
• CPC Class Codes: B60G 9/00 Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle being a part of a set of tandem axles B60G5/00-B60G5/065; with leaf springs B60G11/02-B60G11/08
• CPC Class Codes: B60Y 2200/22 Agricultural vehicles
• CPC Class Codes: B62D 49/0607 Straddle tractors, used for instance above vine stocks, rows of bushes, or the like
• CPC Class Codes: B62D 49/0678 Tractors of variable track width or wheel base for vehicles in general B60B23/12 and B60B35/10

Abstract

An adjustable-width axle assembly of a work machine. The axle assembly includes an outer tube having a side wall which has a recess defined therein. The axle assembly further includes an inner tube positioned within the outer tube. The inner tube has a side wall. The axle assembly further includes a contact member having an extended position and a retracted position. The contact member is urged into contact with the side wall of the inner tube so as to prevent movement of the inner tube relative to the outer tube when the contact member is positioned in the extended position. The contact member is received into the recess defined in the side wall of the outer tube so as to allow the inner tube to move relative to the outer tube when the contact member is positioned in the retracted position. A method of locking an adjustable-width axle assembly of a work machine is also disclosed.

Claims

1. A crop sprayer, comprising:

a chassis;

a first outer tube having a side wall which has a first aperture defined therein;

a second outer tube having a side wall which has a second aperture defined therein, said second outer tube being offset from said first outer tube;

a first inner tube positioned within said first outer tube, said first inner tube having a side wall;

a second inner tube positioned within said second outer tube, said second inner tube having a side wall;

a first contact member having a first extended position and a first retracted position, wherein (i) said first contact member is urged into contact with said side wall of said first inner tube so as to prevent movement of said first inner tube relative to said first outer tube when said first contact member is positioned in said first extended position, and (ii) said first contact member is received into said first aperture defined in said side wall of said first outer tube so as to allow said first inner tube to move relative to said first outer tube when said first contact member is positioned in said first retracted position; and

a second contact member having a second extended position and a second retracted position, wherein (i) said second contact member is urged into contact with said side wall of said second inner tube so as to prevent movement of said second inner tube relative to said second outer tube when said second contact member is positioned in said second extended position, and (ii) said second contact member is received into said second aperture defined in said side wall of said second outer tube so as to allow said second inner tube to move relative to said second outer tube when said second contact member is positioned in said second retracted position,

further comprising a first wheel strut having a first wheel rotatably secured thereto and a second wheel strut having a second wheel rotatably secured thereto, wherein;

said first wheel strut is secured to said first inner tube, and

said second wheel strut is secured to said second inner tube.

2. A crop sprayer, comprising:

a chassis;

a first outer tube having a side wall which has a first aperture defined therein;

a second outer tube having a side wall which has a second aperture defined therein, said second outer tube being offset from said first outer tube;

a first inner tube positioned within said first outer tube, said first inner tube having a side wall;

a second inner tube positioned within said second outer tube, said second inner tube having a side wall;

a first contact member having a first extended position and a first retracted position, wherein (i) said first contact member is urged into contact with said side wall of said first inner tube so as to prevent movement of said first inner tube relative to said first outer tube when said first contact member is positioned in said first extended position, and (ii) said first contact member is received into said first aperture defined in said side wall of said first outer tube so as to allow said first inner tube to move relative to said first outer tube when said first contact member is positioned in said first retracted position; and

a second contact member having a second extended position and a second retracted position, wherein (i) said second contact member is urged into contact with said side wall of said second inner tube so as to prevent movement of said second inner tube relative to said second outer tube when said second contact member is positioned in said second extended position, and (ii) said second contact member is received into said second aperture defined in said side wall of said second outer tube so as to allow said second inner tube to move relative to said second outer tube when said second contact member is positioned in said second retracted position,

further comprising a first contact housing and a second contact housing, wherein;

said first contact housing has a first central cavity defined therein,

said first contact housing is positioned within said first aperture defined in said side wall of said first outer tube,

said first contact member is positioned in said first contact housing when said first contact member is positioned in said first retracted position,

said second contact housing has a second central cavity defined therein,

said second contact housing is positioned within said second aperture defined in said side wall of said second outer tube, and

said second contact member is positioned in said second contact housing when said second contact member is positioned in said second retracted position.