Bucket tooth locking pin
a technology of locking pins and buckets, which is applied in the field of bucket locking pins, can solve the problems of pin adhesion and operator injuries, and achieve the effect of preventing rotation and preventing axial withdrawal of the pin from the ring
Inactive Publication Date: 2014-08-14
QUALITY CHAIN CANADA
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
This patent is related to a mechanism for securely attaching a locking pin to a bucket tooth assembly. The pin has a shoulder that prevents it from being pushed further through the assembly. The sub-assembly includes a shank, a ring seat, and a ring that prevents rotation. The locking pin has a part that can be locked into the ring to secure it. Overall, this mechanism provides a reliable and secure attachment for buckets and tooth assemblies.
Problems solved by technology
As a result, rust tends to set in causing adhesion of the ring to the pin.
In many cases, the difficulty of disengaging it can result in injuries to the operator.
Method used
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Embodiment Construction
[0048]FIGS. 16, 17 and 18 show a shank 50 according to the preferred embodiment of the invention. As best seen in the sectional views of FIGS. 17 and 18, the shank 50 includes an aperture 52 extending laterally through the shank for receiving a pin 58 through the aperture. One side of shank 50 further comprises a ring seat 54 for receiving a ring as will be described below. Ring seat 54 is preferably generally circular but including an eccentric cam portion 56, as is best appreciated by reference to FIG. 16.
[0049]FIGS. 6 and 7 show the pin 58 according to the preferred embodiment. Pin 58 may be of steel. Pin 58 includes a shoulder 60 between a larger diameter portion 62 and a smaller diameter portion 64. A locking lobe 66 is provided on the surface of the smaller diameter portion 64 of the pin 58. As will be described below, lobe 66 is sized to be accommodated and seated in a channel formed along the inner wall of the ring. In the preferred embodiment, the lobe is a frusto-spherical...
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Abstract
A system to attaching a tooth to a bucket shank comprises a ring seat in the shank having a cam. A locking ring having a corresponding cam is seated in the seat and has an interior channel bounded by shoulders. A locking pin of a dissimilar material to the ring includes a lobe sized to correspond to the channel. Once inserted through apertures in the tooth and the shank, the pin may be rotated to force the lobe over the shoulders and to be housed in the channel to securely hold the pin in place.
Description
FIELD OF THE INVENTION[0001]This invention relates to loading buckets. In particular, this invention relates to teeth used on loading buckets and means for retaining the teeth on the bucket.BACKGROUND OF THE INVENTION[0002]A loading bucket for heavy machinery typically includes a number of teeth on the ground-engaging surface of the bucket.[0003]As shown in the prior art images of FIGS. 1 and 2, a bucket tooth 12 is installed on a shank 10 in a mating relationship so that the stresses on the tooth are conveyed over relatively large and angled contact surfaces 14 to the shank. A lock pin 16 extends through both the shank 10 and the tooth 12 to ensure that the tooth remains on the shank during use.[0004]Referring to FIGS. 2 and 4, an aperture 18 extends through the sides of the tooth 12 and through the shank 10 to receive the pin 16. The outer edges of one side of the aperture are formed with a seat 20 to accommodate a locking ring 22. Referring to FIG. 5, the prior art pin 16 include...
Claims
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IPC IPC(8): E02F9/28
CPCE02F9/2891E02F9/2833E02F9/2841Y10T29/49959
Inventor ENDERSBY, TRAVISMITCHELL, VINCE
Owner QUALITY CHAIN CANADA