A trolley assembly for overhead track testing is provided. In one example embodiment, a trolley assembly includes an idle roller that rotates about a first axis, a first top roller coupled to a first end of the idle roller via a first trolley upright support, and a second top roller coupled to a second end of the idle roller via a second trolley upright support. The trolley assembly includes a cantilever coupled to the idle roller. The trolley assembly includes a driveshaft coupled to a first end of the cantilever. The trolley assembly includes at least one motor coupled to the drive shaft.

We disclose an apparatus for maintaining a flow of grain moving toward a rotating sweep conveyor. A rake extends longitudinally along the sweep. The rake is disposed along the leading sidewall of the sweep such that the rake is in the path of movement of the sweep as the sweep rotates within the bin. The rake has a plurality of projections that protrude from a shaft. A reciprocating drive assembly is connected to the driven roller and to the shaft. The reciprocating drive assembly causes the shaft to move forward and backward along the longitudinal axis of the sweep. The reciprocating shaft movement causes the projections to engage grain piles in the path of the sweep, causing the pile to collapse into a flowable particulate to be received by the sweep.

We disclose an apparatus for maintaining a flow of grain moving toward a rotating sweep conveyor. A rake extends longitudinally along the sweep. The rake is disposed along the leading sidewall of the sweep such that the rake is in the path of movement of the sweep as the sweep rotates within the bin. The rake has a plurality of projections that protrude from a shaft. A reciprocating drive assembly is connected to the driven roller and to the shaft. The reciprocating drive assembly causes the shaft to move forward and backward along the longitudinal axis of the sweep. The reciprocating shaft movement causes the projections to engage grain piles in the path of the sweep, causing the pile to collapse into a flowable particulate to be received by the sweep.

A method and a device are provided for replacing individual idler rollers for conveyors, with which a web belt can be lifted and worn-out or damaged idler rollers in upper and lower runs can be individually replaced. The device includes, separately for replacing the idler rollers in the upper run and in the lower run, a subframe (1) for lifting the web belt (7) and for holding the web belt (7), such that a sufficient clearance is formed for replacing worn-out idler rollers (53) by means of a changing frame (2). A service vehicle is equipped with a lifting apparatus for moving dividing devices. The process steps include lifting the web belt (7), removing the old idler roller (53.sup.old) inserting the new idler roller (53.sup.new) and lowering the web belt (7). The drawing shows the use of two dividing devices in the replacing of idler rollers in the upper run.

A method and a device are provided for replacing individual idler rollers for conveyors, with which a web belt can be lifted and worn-out or damaged idler rollers in upper and lower runs can be individually replaced. The device includes, separately for replacing the idler rollers in the upper run and in the lower run, a subframe (1) for lifting the web belt (7) and for holding the web belt (7), such that a sufficient clearance is formed for replacing worn-out idler rollers (53) by means of a changing frame (2). A service vehicle is equipped with a lifting apparatus for moving dividing devices. The process steps include lifting the web belt (7), removing the old idler roller (53.sup.old) inserting the new idler roller (53.sup.new) and lowering the web belt (7). The drawing shows the use of two dividing devices in the replacing of idler rollers in the upper run.

A trough-belt conveyor with adjustable bearing support wings and methods for operating the conveyor to sort or destack articles. The conveyor includes a flexible conveyor belt supported in a series of support beds. Adjustable support beds have a base bearing member flanked by a pair of bearing wings. One or both of the wings are adjustable to raise or lower the sides of the belt above and below the plane of the center of the belt supported atop the base member.

The present invention provides a sheet conveying roller, which effectively reduces the amount of paper dust accumulated on its outer peripheral surface to thereby suppress sheet transportation failure. The sheet conveying roller includes a nonporous tubular elastic member (1). The elastic member (1) has a plurality of recesses (6) or a plurality of through-holes (8) equidistantly arranged in a center axis (L1) direction thereof and equidistantly arranged in a circumferential direction thereof, and each having an opening having a round plan shape in an outer peripheral surface (2) thereof, wherein the recesses (6) each have a constant depth as measured thicknesswise of the elastic member (1), wherein the through-holes (8) each extend thicknesswise through the elastic member (1). A production method includes forming the elastic member by vulcanizing a rubber composition in a vulcanization mold having projections corresponding to the recesses or the through-holes.

The present invention provides a sheet conveying roller, which effectively reduces the amount of paper dust accumulated on its outer peripheral surface to thereby suppress sheet transportation failure. The sheet conveying roller includes a nonporous tubular elastic member (1). The elastic member (1) has a plurality of recesses (6) or a plurality of through-holes (8) equidistantly arranged in a center axis (L1) direction thereof and equidistantly arranged in a circumferential direction thereof, and each having an opening having a round plan shape in an outer peripheral surface (2) thereof, wherein the recesses (6) each have a constant depth as measured thicknesswise of the elastic member (1), wherein the through-holes (8) each extend thicknesswise through the elastic member (1). A production method includes forming the elastic member by vulcanizing a rubber composition in a vulcanization mold having projections corresponding to the recesses or the through-holes.

A tandem seal, according to the present invention, is provided for a conveyor roller having a drum body with opposing ends rotatably mounted on an axle by way of a bearing assembly within a flanged housing attached at either end of the drum body. The tandem seal has an end cap rigidly mounted within the flanged housing, extending radially inwardly towards the axle and spaced apart therefrom. A guard is rigidly mounted on the axle and extends radially outwardly from the axle and is spaced apart from the end cap. A first contact seal seals the space between the guard and the end cap and a second contact seal seals the space between the axle and the flanged housing.

A method and a device are provided for replacing individual idler rollers for conveyors, with which a web belt can be lifted and worn-out or damaged idler rollers in upper and lower runs can be individually replaced. The device includes, separately for replacing the idler rollers in the upper run and in the lower run, a subframe (1) for lifting the web belt (7) and for holding the web belt (7), such that a sufficient clearance is formed for replacing worn-out idler rollers (53) by means of a changing frame (2). A service vehicle is equipped with a lifting apparatus for moving dividing devices. The process steps include lifting the web belt (7), removing the old idler roller (53.sup.old), inserting the new idler roller (53.sup.new) and lowering the web belt (7). The drawing shows the use of two dividing devices in the replacing of idler rollers in the upper run.