MECHANICAL SYSTEM COMPRISING A CONNECTING DEVICE BETWEEN A WEARING PART AND THE SUPPORT THEREOF, AND BUCKET OF A HEAVY CONSTRUCTION MACHINE

摘要

The present invention relates to a mechanical system (1), comprising a support (10), a wearing part (20) and a connecting device (30) between the wearing part (20) and the support thereof (10). The device (30) comprises an elastic sheath (40) provided with an internal cavity (47) and with an external wall (44) that is adjustable in a housing (14) of the support (10), and a pin (50) having an elongate body along a pin axis (X50). According to the invention, the device (30) also comprises a cam (60) provided with an external wall (63) that is adjustable in the internal cavity (47) of the sheath (40) and with an internal cavity (64) intended to receive the pin (50), and when the device (30) is positioned in the housing (14) of the support (10), the pin (50) and the cam (60) are able to rotate as one in the internal cavity (47) of the sheath (40), between an insertion configuration (A) of the pin (50) into the cam (60) and at least one locking configuration in which the pin (50) bears, radially with respect to the pin axis (X50), against the wearing part (20), while the cam (60) bears against the sheath (40) and deforms the external wall (44) thereof counter to the housing (14) of the support (10), thereby forming a coupling connection between the wearing part (20) and the support (10).

主权项

1. A mechanical system, comprising a support, a wearing part and a connecting device between the wearing part and its support, wherein the support, the wearing part and the connecting device are comprised in a piece of equipment of a public works machine, the connecting device comprising:
a sheath in an elastically deformable material, comprised of an internal cavity and an external wall adjustable in a housing of the support, and a key comprising an elongated body along a key axis, wherein the connecting device also comprises a cam provided with an external adjustable wall in the internal cavity of the sheath and with an internal cavity provided for receiving the key, and wherein the connecting device is positioned in the housing of the support, the key and the cam are mobile and rotationally secured to each other in the internal cavity of the sheath, between: a configuration for insertion of the key into the cam, and at least one locking configuration wherein the key radially to the key axis bears against the wearing part, while the cam bears against the sheath and deforms its external wall against the housing of the support, thereby forming a coupling connection between the wearing part and the support.