Aktiebolaget Bofors

Ab Bofors Wear Parts

Ove Nilsson

Arne Johansson

Torsten Larsson

This invention refers to a locking device (14) for a wear-parts system (1) and (2) for earth moving machines. The locking device (14) consists of a rigid lock bolt (17) connected to a lock catch (19) which is intended to prevent the lock bolt (17) falling out after it has been fitted in the lock opening (12, 13) for this purpose where it prevents the different parts (1) and (2) of the wear-part from moving relative to each other. According to this invention the lock catch (19) is designed so that it can be easily fitted in position together with the lock bolt (17) and there provide the best possible locking action. On the other hand no regard has been paid to the lock catch (19) being able to be loosened from the outside in order to remove the lock bolt (17). Instead a breaking point (29) has been provided along the fixation of the lock catch (19) in the lock bolt (17). The breaking point (29) makes it possible by means of subjecting the lock bolt (17) to forces e.g., from blows from a heavy hammer, in the longitudinal direction of the lock bolt (17) to load the connection between the lock bolt (17) and the lock catch (19) until it shears. The latter remaining in the lock opening (12, 13, 15, 16) when the lock bolt is forced out of the opening.

Locking device

Loader tooth adapters

Loader tooth adapters for corner assembly

This invention relates to a wear-parts system of teeth for earth-moving machine shovels, mounted at the front of the shovel and comprising several loosely interconnected parts such as tooth points (1), adapters or holders (2, 9), cutting edge protectors (11) etc. The interconnection of these parts is carried out by means of interacting male and female formed parts (15, 16, 19, 20 and 13, 14, 21, 22). The parts are locked in the assembled position by means of specially formed locking wedges (7) fitted at right angles to the assembly direction. Openings are provided in the various parts for the locking devices.

Growing community of inventors

Orebro, Sweden

Ove Nilsson