Wear member attachment system for excavation implement
A wear member attachment system for an excavation implement can include a retainer with an abutment that engages a forward side of an opening extending through a lip of the excavation implement, the retainer further including a cam. Rotation of the cam displaces the abutment forward relative to a body of the retainer. Another wear member attachment system can include a retainer with a cam and an abutment. Rotation of the cam displaces the abutment outward relative to a body of the retainer. The abutment displacement is in a direction orthogonal to an axis of rotation of the cam.
1. A wear member attachment system for an excavation implement, the system comprising:
a retainer including an abutment that engages a forward side of an opening extending through a lip of the excavation implement, the retainer further including a cam,
wherein rotation of the cam displaces the abutment forward relative to a body of the retainer, and
wherein teeth of the cam engage a first threaded member that rotates about a first axis.
2. The system of claim 1 , wherein the cam rotates about a second axis oriented lateral relative to the excavation implement lip.
3. The system of claim 1 , wherein the first axis is orthogonal to a second axis about which the cam rotates.
4. The system of claim 1 , wherein the first threaded member is reciprocably disposed on a shaft.
5. The system of claim 4 , wherein a second threaded member is reciprocably disposed on the shaft.
6. The system of claim 5 , wherein the second threaded member engages teeth of a latch, and wherein the latch displaces in response to rotation of the shaft and the second threaded member.
7. The system of claim 5 ,
wherein the second threaded member engages teeth of a latch,
wherein the latch displaces to an engaged position, in which removal of a wear member from the excavation implement lip is prevented, in response to rotation of the shaft and the second threaded member, and
wherein the second threaded member disengages from the latch teeth as the latch displaces to the engaged position.
8. The system of claim 7 , wherein the rotation of the shaft continues to rotate the cam and displace the abutment forward, with the second threaded member disengaged from the latch teeth.
9. The system of claim 7 , further comprising a biasing device that biases the second threaded member toward engagement with the latch teeth.
10. The system of claim 4 , further comprising a biasing device that exerts a biasing force on the first threaded member.
11. The system of claim 10 , wherein the biasing force increases in response to discontinued forward displacement of the abutment.
12. The system of claim 10 , wherein the biasing force increases in response to displacement of the first threaded member on the shaft.
13. The system of claim 10 , wherein the biasing force forwardly biases the abutment.
14. The system of claim 10 , wherein the biasing device extends helically about the shaft.
15. A wear member attachment system for an excavation implement, the system comprising:
a retainer including a cam and an abutment, and wherein rotation of the cam displaces the abutment outward relative to a body of the retainer, the abutment displacement being in a direction orthogonal to an axis of rotation of the cam,
wherein teeth of the cam engage a first threaded member,
wherein the first threaded member is reciprocably disposed on a shaft, and
wherein a second threaded member is reciprocably disposed on the shaft.
16. The system of claim 15 , wherein the cam axis of rotation is oriented lateral relative to a lip of the excavation implement.
17. The system of claim 15 , wherein an axis of rotation of the first threaded member is orthogonal to the cam axis of rotation.
18. The system of claim 15 , wherein the second threaded member engages teeth of a latch, and wherein the latch displaces in response to rotation of the shaft and the second threaded member.
19. The system of claim 15 ,
wherein the second threaded member engages teeth of a latch,
wherein the latch displaces to an engaged position, in which removal of a wear member from the excavation implement is prevented, in response to rotation of the shaft and the second threaded member, and
wherein the second threaded member disengages from the latch teeth as the latch displaces to the engaged position.
20. The system of claim 19 , wherein the rotation of the shaft continues to rotate the cam and displace the abutment in the direction, with the second threaded member disengaged from the latch teeth.
21. The system of claim 19 , further comprising a biasing device that biases the second threaded member toward engagement with the latch teeth.
22. The system of claim 15 , further comprising a biasing device that exerts a biasing force on the first threaded member.
23. The system of claim 22 , wherein the biasing force increases in response to discontinued displacement of the abutment in the direction.
24. The system of claim 22 , wherein the biasing force increases in response to displacement of the first threaded member on the shaft.
25. The system of claim 22 , wherein the biasing force biases the abutment in the direction.
26. The system of claim 22 , wherein the biasing device extends helically about the shaft.
27. The system of claim 15 , wherein the retainer is received in an opening extending through a lip of the excavation implement.
28. The system of claim 27 , wherein the abutment engages a forward side of the opening.
29. The system of claim 15 , wherein the direction comprises a forward direction.