Mechanical system comprising a connecting device between a wearing part and the support thereof, and bucket of a heavy-construction machine

摘要

The invention relates to a mechanical system 1 comprising a support 10, a wear portion 20 and a connection device 30 between the wear portion 20 and its support 10. The device 30 has an inner cavity 47 and an elastic sheath 40 with an adjustable outer wall 44 within the housing 14 of the support 10, and a body elongated along the pin axis X50. Includes a pin (50). According to the invention, the device 30 also has an adjustable outer wall 63 within the inner cavity 47 of the sheath 40 and a cam 60 with an inner cavity 64 for receiving the pin 50. And, when the connecting device 30 is located in the housing 14 of the support 10, the pin 50 and the cam 60 are in the inner cavity 47 of the sheath 40, the pin 50 ) Is inserted into the cam 60 (A), and the pin 50 is supported against the wear part 20 in the radial direction with respect to the pin axis X50, and the cam 60 is covered 40 At least one lock which is supported against and deforms its outer wall 44 relative to the housing 14 of the support 10, thereby forming a coupling connection between the wear part 20 and the support 10 Between batches, they can rotate together.