Patent Application
20160332482
The present application relates to a handling system for large tires, such as those used on semi-trucks, agriculture equipment, road construction machinery, and the like. Particularly, the application relates to a handling system for safely lifting and moving large tires from and onto such machinery.
Large tires used on trucks, heavy machinery and agriculture equipment, such as farm tractors and the like, can weigh from several hundred pounds to well-over a thousand pounds. Like much smaller tires, these treaded giants occasionally require removal for repair or replacement. However, for even two men, the task of removing, moving and replacing a tire on this type of heavy equipment can be an extremely difficult and potentially dangerous task (e.g., see https://www.youtube.com/watch?v=fnV1R7m1Oms).
Further, due to the cost of such the heavy machinery there is often no backup, which makes it very critical to many day-to-day operations. Prolonged downtime of, for example, a farmer's tractor can set scheduled operations well-behind and must be minimized as much as possible. That said, manual tire removal and replacement can result in a significant amount of tractor downtime, especially where only a single person is involved.
For these reasons, it is important to provide a device which can help reduce the physical strength required as well as practically eliminate the safety risk involved with changing a bad tire. These and other problems are addressed by the present device and methods to provide a system with numerous advantages in operation and effectiveness.
There is disclosed herein a tire handling system, device and method which avoids the disadvantages of prior devices while affording additional structural and operating advantages.
The tire handling system is preferably capable of being attached to a forklift (or similar vehicle) having controls for operation of a movable carriage having at least two forks. Generally speaking, the system comprises a platform which attaches to the forks of the lift carriage, a grapple comprised of a plurality of arms, and a connection between the platform and the grapple which allows pivoting and rotation of the grapple.
In a more specific embodiment, each of the arms includes a stationary portion and an engagement bracket, and at least one arm includes an adjustable portion for extending and contracting a length of the at least one arm with the engagement bracket positioned on the adjustable portion. Further, the plurality of arms are arranged to define an area between the engagement brackets having a perimeter greater than the circumference of a tire to be handled.
In a preferred embodiment, a first hydraulic cylinder is connected to the adjustable portion of the at least one arm of the grapple to move the adjustable portion inward and outward, as needed. Most preferably, each of the plurality of arms includes an adjustable portion for extending and contracting a length of the arm with the engagement bracket positioned on the adjustable portion of the arm and each of the plurality of arms includes a first hydraulic cylinder connected to the adjustable portion.
In another embodiment, a second hydraulic cylinder is positioned on the platform and is connected by one end to the platform and by another end to the grapple for moving the grapple via the connector. In embodiments using the hydraulic cylinders, it is preferred that each be operated by a controller positioned on the platform of the tire handling system. Alternatively, the tire handling system may be connected to the forklift (or other vehicle) controls for operation.
These and other aspects of the invention may be understood more readily from the following description and the appended drawings.
For the purpose of facilitating an understanding of the subject matter sought to be protected, there are illustrated in the accompanying drawings embodiments thereof, from an inspection of which, when considered in connection with the following description, the subject matter sought to be protected, its construction and operation, and many of its advantages should be readily understood and appreciated.
While this invention is susceptible of embodiments in many different forms, there is shown in the drawings and will herein be described in detail a preferred embodiment of the invention with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the broad aspect of the invention to embodiments illustrated.
Referring now to
As shown in
Further, while the illustrated tire handling system 10 is for attachment to a forklift 80, modifications can be made for direct attachment to the boom of a service truck, or the like (not shown). In fact, the grapple 12 may even be made part of stand-alone “vehicle” which can be manually wheeled about and positioned as desired by an individual. A key component to each of these embodiments, as will be described below, is the ability of the grapple 12 to pivot and rotate to be best positioned for engaging the tire properly. As a result, the multi-armed grapple 12 is capable of engaging and holding a large tire in an advantageous vertical and horizontal position. The present invention allows large tires to be removed, transported and replaced by a single person, safely and effectively.
Referring now to the illustrated preferred embodiment of the system 10 in
A connector 32 links the central hub 30 to a pivot 34, which is connected to a platform 42. The connector 32 most importantly provides the ability to rotate the arms 20A-20C about an axis through the central hub 30 to facilitate tire alignment. The rotation is preferably ±20 degrees, and most preferably ±10 degrees. The pivot 34 allows the grapple 12 to be pivoted in a vertical direction (i.e., up and down) from a forward facing position (
While it is possible that the adjustable portion 22 of each arm 20A-C could be made to be manually moved, as would be understood by those of skill in the art, a hydraulic cylinder 40 is preferably attached for movement of at least one arm 20. Having just one arm hydraulically driven would require the other arms 20 to be manually set to engage the tire first. Then, the final arm 20 would be hydraulically moved to tightly engage the tire. Of course, having all three arms 20A-C separately controlled by hydraulic cylinders 40A-C would provide the most preferred, safest and easiest tire handling system 10.
The platform 42 provides attachment to the fork of a lift (e.g., a forklift) with two open channels 46 for insertion of the forks, much like a standard pallet. This attachment allows the entire grapple 12 to be advantageously moved up and down on the carriage of the lift fork. An opening 44 on the platform 42 allows a second hydraulic cylinder 50 to couple to the pivot 34, as shown in
In the illustrated embodiment of
In use, the grapple 12 is pivoted upward to a vertical position by extending the second hydraulic cylinder 50 which operates the pivot 34. The handling system 10 can then be positioned vertically by moving the forks of the forklift up or down. The adjustable portions 22 of the three arms 20A-C should be extended, either manually or hydraulically, such that the area between the respective engagement brackets 26 is greater than the tire to be engaged. The spread of the adjustable arms should be greater than the tire size to allow for the flange 28 on each engagement bracket 26 to clear the tire.
As shown, all three of the adjustable portions 22 are operated by hydraulic cylinders 40. However, one or all of the three adjustable portions 22 may be adjusted manually where the hydraulic cylinders are not provided. Manual adjustment can be a sliding portion which moves into and out of the stationary portion 24 or it may be provided through a mechanical means, such as a worm gear, wheel gear, or the like.
Once the arms 20A-C are positioned properly, the grapple 12 can be advanced into engagement with the tire as shown, by movement of the forklift. Once in position, the adjustable portion 22 of the arms (including manual and hydraulic arms) 20A-C can be contracted to place the engagement bracket 26 in contact with the tire to secure the tire within the grapple 12. The tire lugs can then be removed to free the tire from the vehicle. The tire can then be removed by reversing the direction of the forklift—being sure the vehicle is properly supported by a jack, jack stand or blocks.
Once clear of the vehicle, the handling system 10 can then be raised, via the lift carriage, and the grapple 12 can be pivoted downward by retracting the second hydraulic cylinder 50. The tire can then be transported in this position to a shop, trailer bed, or the like where the lowering of the fork places the tire upon a sufficient support surface. By opening the grapple arms 20A-C to allow the flanges 28 to clear the tire, the grapple 12 can then be raised and the tire is suitable to be worked upon. The tire can also be placed in a vertical position, if needed, though this can be a danger in light of the possible tipping of the tire once released.
Reversing the above process will return the repaired or replacement tire onto the vehicle. Further, the pivot 34 allows the grapple 12 to be rotated ±20 degrees (i.e., left or right), and most preferably at least ±10 degrees to align the tire holes and lug bolts.
As noted above, the tire handling system 10 is preferably self-contained. Accordingly, as shown in
In an alternate embodiment, the grapple 12 may be configured to connect directly to the boom of an implement service truck (not shown). An interface can be created such that upon proper connection to the boom, the operation of the grapple can be controlled from the truck, much like any other connected implement.
The matter set forth in the foregoing description and accompanying drawings is offered by way of illustration only and not as a limitation. While particular embodiments have been shown and described, it will be apparent to those skilled in the art that changes and modifications may be made without departing from the broader aspects of applicants' contribution. The actual scope of the protection sought is intended to be defined in the following claims when viewed in their proper perspective based on the prior art.
The present application claims the filing benefit of U.S. Provisional Application No. 62/160,062, titled “Tire Handling System” and filed on May 12, 2015. The '062 Provisional Application is hereby incorporated by references.
| Number | Date | Country | |
|---|---|---|---|
| 62160062 | May 2015 | US |
