GRAIN COMBINE HARVESTER TABLE LINKAGE Russian patent published in 1995 - IPC

FIELD: agricultural engineering. SUBSTANCE: linkage of table mounted on grain combine harvester is made in form of four-link articulated mechanism and it has inclined chamber 1 set into motion by hydraulic cylinders 2 secured on frame of combine harvester 3. Two independent spring-loaded levers 4 are hinge-mounted in upper part of housing of inclined chamber 1. Found in lower part of housing of inclined chamber 1 is seat of central spherical joint 6 in front of which catcher 7 is installed. Catcher is made in form of surface with guide boards converging towards seat of central spherical joint. Brackets 9 in upper part of body 8 of harvester table serve to provide hinge connection with levers 4. A-shaped frame 11 in lower part is spring-loaded vertically to thrust against stop 10. Frame 11, hinge-connected with body 8 by its base, has connecting member in its top, for instance ball head, to provide connection with seat of central spherical joint 6. Mounting of table or other implement is done as follows. Combine harvester is driven to table installed on shoes and supports on level ground or secured on transportation truck. Distance between table and harvester should be such that, with inclined chamber 1 lowered, A-shaped frame 11 installed on table body should get with its top into catcher 7 arranged on inclined chamber 1, and grips of levers 4 should be arranged in planes of brackets 9. With further movement of combine harvester to table, levers 4 thrust against brackets 9, inclined chamber 1 lifts, and locks 14 automatically lock hinge joint of levers 4 and brackets 9 to prevent spontaneous disconnection. With levers 4 connected with brackets 9 and further lifting of inclined chamber by hydraulic cylinders 2, table supports 21 break away from ground and table, turning in hinge joint of levers 4 and brackets 9, slides along ground by its shoes and ball head of A-shaped frame 11 slides along surface of catcher 7 and gets into seat of central spherical joint 6. Lock 17 automatically locks spherical joint to prevent its spontaneous disconnection. Now process of table mounting is completed. EFFECT: enlarged operating capabilities. 3 cl, 5 dwg