Bulk material handling system
A bulk material handling accessory such as a conveyor belt cleaner for use in connection with a bulk material handling system. The bulk material handling accessory includes a main frame, a scraping member including an arm and a scraper blade pivotally attached to the main frame, and a damper mechanism coupled at one end to the main frame and at another end to the scraping member. A mounting mechanism is attached to the main frame for providing linear and rotational movement of the main frame and the associated scraping member and damper mechanism. The damper mechanism includes a damper having a piston and a housing having a fluid chamber. The viscosity of the fluid within the fluid chamber is selectively changeable to change the damping characteristics of the damper mechanism to accommodate changes in operating conditions.
1. A mounting mechanism for mounting and selectively positioning a cross shaft of a bulk material handling accessory, said mounting mechanism comprising:
a linear positioning mechanism including a first linear actuator and a support bracket coupled to said first linear actuator, said support bracket is coupled to the cross shaft, said first linear actuator selectively moves said support bracket and the cross shaft along a generally linear translational axis; and
a rotational positioning mechanism including a pivot arm having a first end and a second end and a second linear actuator, said first end of said pivot arm is coupled to the cross shaft and said second end of said pivot arm is coupled to said second linear actuator, and said second linear actuator selectively pivots said pivot arm and thereby pivots the cross shaft with respect to the support bracket about a pivot axis.
2. The mounting mechanism of claim 1 wherein said first linear actuator comprises a threaded rod, and said support bracket includes a threaded bore, wherein said threaded rod is selectively rotatable within said threaded bore with respect to said support bracket to thereby selectively position said support bracket along said threaded rod and along said linear translational axis.
3. The mounting assembly of claim 1 wherein said support bracket includes a passageway that receives the cross shaft and a bushing located within said passageway, and said bushing includes a bore that receives the cross shaft, and wherein said bushing is conjointly rotatable with the cross shaft within said passageway of said support bracket.
4. The mounting assembly of claim 1 wherein said second linear actuator comprises a fluid cylinder having a selectively retractable and extendable ram.
5. The mounting assembly of claim 1 wherein said rotational positioning mechanism includes a collar coupled to the cross shaft, wherein said collar is attached to said first end of said pivot arm for conjoint pivotal movement with said pivot arm.