Wear assembly for machinery
OwnerJavier Bartolome Rodriguezinventor
Life of this patent
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Abstract
Wear assembly for machinery includes wear and support elements and a retaining pin for attaching them to each other. The retaining pin has protrusions and the wear element has cavities such that the protrusions can be passed therethrough. The support element has a recess for receiving one of the protrusions. In a first position the retaining pin can be inserted into the wear and support elements. In a second position one protrusion is snap fitted in one cavity so the retaining pin cannot be rotated to the wear and support elements and the other protrusion is received into the recess abutting an inner surface of the wear element such that the retaining pin cannot be displaced axially to the wear and support elements.
Claims17
A wear assembly for machinery, the assembly comprising a wear element, a support element, each comprising respective openings, and a retaining pin that can be received into said respective openings for attaching the wear element and the support element to each other, wherein:
- the retaining pin has at least first and second angularly and axially spaced retaining protrusions at least one of which is formed as a unitary piece together with the retaining pin, and wherein the first retaining protrusion is resiliently mounted relative to the retaining pin;
- the opening of the wear element has at least first and second cavities such that both the first and second retaining protrusions of the retaining pin can be passed therethrough, and
- the opening of the support element has at least one inner recess for further receiving the second retaining protrusion of the retaining pin at least partially therein,
- wherein the wear element is configured to be inserted into the support element along a single, longitudinal direction of movement until at least one end portion of the support element is inserted into the wear element such that the openings of the wear element and the support element are aligned with each other for receiving the retaining pin,
- such that
- in a first, angular position of the retaining pin the retaining pin can be inserted both into the wear element and the support element when said elements are attached to each other, and
- in a second, angular position of the retaining pin, and once the retaining pin is inserted in both the wear element and the support element, the first retaining protrusion of the retaining pin is snap fitted in the first cavity of the wear element such that the retaining pin is prevented from being rotated relative to the wear element and the element and the second retaining protrusion of the retaining pin is received into the inner recess of the support element abutting an inner surface of the wear element such that the retaining pin is prevented from being displaced axially relative to the wear element and the support element when both elements are attached to each other.
A combination comprising:
- machinery and
- a wear assembly connected to the machinery, the wear assembly comprising:
- a wear element;
- a support element;
- and
- a retaining pin for attaching the wear element and the support element to each other,
- wherein:
- the retaining pin has at least first and second angularly and axially spaced retaining protrusions at least one of which is formed as a unitary piece together with the retaining pin, and wherein the first retaining protrusion is resiliently mounted relative to the retaining pin;
- the wear element has an opening having at least first and second cavities such that both the first and second retaining protrusions of the retaining pin can be passed therethrough, and
- the support element has an opening having at least one inner recess for further receiving the second retaining protrusion of the retaining pin at least partially therein.
A wear assembly for machinery, the assembly comprising a wear element, a support element, and a retaining pin for attaching the wear element and the support element to each other, wherein:
- the retaining pin has at least first and second angularly and axially spaced retaining protrusions;
- the wear element has at least first and second cavities such that both the first and second retaining protrusions of the retaining pin can be passed therethrough, and
- the support element has at least one inner recess for further receiving the second retaining protrusion of the retaining pin at least partially therein,
- wherein the support element comprises a rotation limiting element suitable for at least restraining the support element from being rotated relative to the wear element when the wear element is attached to the support,
- wherein one or both:
- the rotation limiting element comprises longitudinal ridges projecting from at least one of a top portion and a bottom portion of the support element suitable for being fitted into the wear element, and/or
- wherein the rotation limiting element comprises a recess configured for receiving a corresponding projection of the wear element;
- such that
- in a first, angular position of the retaining pin the retaining pin can be inserted both into the wear element and the support element when said elements are attached to each other, and
- in a second, angular position of the retaining pin, and once the retaining pin is inserted in both the wear element and the support element, the first retaining protrusion of the retaining pin is snap fitted in the first cavity of the wear element such that the retaining pin is prevented from being rotated relative to the wear element and the element and the second retaining protrusion of the retaining pin is received into the inner recess of the support element abutting an inner surface of the wear element such that the retaining pin is prevented from being displaced axially relative to the wear element and the support element when both elements are attached to each other.
Dependencies are inferred from the claim text.