A grate bar (for forming a plank of a conveyor grate for transporting bulk material) includes at least an up-facing surface for supporting bulk material, a down-facing surface for supporting the grate bar on at least one grate bar rest, front end and rear-end sides, first and second profiled narrow sides. The first and second profiled narrow sides are complementary to one another and form a moving gap therebetween if and/or when the first profiled narrow side of the chosen grate bar is positioned adjacent to the second profiled narrow side of a neighboring grate bar (that is identical to the chosen grate bar at least with respect to the profile of the second profiled narrow side). The grate bar can be easily replaced if a front edge between the up-facing surface and the front-end side has a front edge curvature, a rear edge between the up-facing surface and the rear-end side has a rear edge curvature and the rear edge curvature is complementary to the front edge curvature.

A conveyance method of conveying a conveyance target object by loading the conveyance target object on a slider, wherein the slider is connected to a ball nut threadably engaged with a ball screw shaft, includes a step of rotating the ball screw shaft by an electric motor, a step of applying a braking force which is a rotation resistance to the ball screw shaft by a non-electric resistance changing unit, and a step of setting at least one of a driving force of the electric motor and the braking force of the resistance changing unit so that the slider will stop when a predetermined external force acts on the slider during conveyance and changes the slider to an overload state regardless of the presence/absence of the conveyance target object loaded on the slider and a weight of the conveyance target object.

A conveyance method of conveying a conveyance target object by loading the conveyance target object on a slider, wherein the slider is connected to a ball nut threadably engaged with a ball screw shaft, includes a step of rotating the ball screw shaft by an electric motor, a step of applying a braking force which is a rotation resistance to the ball screw shaft by a non-electric resistance changing unit, and a step of setting at least one of a driving force of the electric motor and the braking force of the resistance changing unit so that the slider will stop when a predetermined external force acts on the slider during conveyance and changes the slider to an overload state regardless of the presence/absence of the conveyance target object loaded on the slider and a weight of the conveyance target object.

A conveying device includes first guide rails 2A, 2B; second guide rails 12A, 12B for being connected to the first guide rails 2A, 2B; a movable holding part that holds the second guide rails 12A, 12B such that the second guide rails 12A, 12B are movable in transverse directions with respect to longitudinal directions of the second guide rails 12A, 12B; and moving parts 3A, 3B that move by being guided by the corresponding first guide rails 2A, 2B and the corresponding second guide rails 12A, 12B.

A conveying device includes first guide rails 2A, 2B; second guide rails 12A, 12B for being connected to the first guide rails 2A, 2B; a movable holding part that holds the second guide rails 12A, 12B such that the second guide rails 12A, 12B are movable in transverse directions with respect to longitudinal directions of the second guide rails 12A, 12B; and moving parts 3A, 3B that move by being guided by the corresponding first guide rails 2A, 2B and the corresponding second guide rails 12A, 12B.

A conveyance device includes: moving members 3A and 3B that move along a table 7 for disposing an article 5 thereon; shafts 21A and 21B that are rotatably connected to the moving members 3A and 3B; a contact member 22 configured to come into contact with the article 5, the contact member 22 being connected to the shafts 21A and 21B; inhibiting mechanisms 23A and 23B that inhibit rotation of the shafts 21A and 21B so that the contact member 22 is held above the article 5, the inhibiting mechanisms 23A and 23B being disposed at the moving members 3A and 3B; and dogs 24A and 24B that come into contact, at a predetermined location with the inhibiting mechanisms 23A and 23B to deactivate inhibition of rotation of the shafts 21A and 21B by the inhibiting mechanisms 23A and 23B, thereby lowering the contact member 22 toward the table 7.

A conveyance device includes: moving members 3A and 3B that move along a table 7 for disposing an article 5 thereon; shafts 21A and 21B that are rotatably connected to the moving members 3A and 3B; a contact member 22 configured to come into contact with the article 5, the contact member 22 being connected to the shafts 21A and 21B; inhibiting mechanisms 23A and 23B that inhibit rotation of the shafts 21A and 21B so that the contact member 22 is held above the article 5, the inhibiting mechanisms 23A and 23B being disposed at the moving members 3A and 3B; and dogs 24A and 24B that come into contact, at a predetermined location with the inhibiting mechanisms 23A and 23B to deactivate inhibition of rotation of the shafts 21A and 21B by the inhibiting mechanisms 23A and 23B, thereby lowering the contact member 22 toward the table 7.

A plastic splash guard hold down bearing for a moving floor conveyor has opposing hooks that clip onto an underlying support. The bearing presents a flat top surface for allowing a floor slat to slide back and forth as part of a moving floor conveyor. The plastic material and bearing construction is sufficient flexible to clip the bearing onto the support.

A hydraulic cylinder for a drive unit assembly for a reciprocating floor slat conveyor system has a single tubular barrel divided into two chambers by a center head or plug. The center head is held in position by shrink fitting it into the barrel.

The present disclosure relates to end caps for extruded floor slats that are built into moving floor conveyor systems. The end cap has a portion that is inserted in the hollow end of an extrusion and is held in place by self-threading screws that thread directly into the material making up the end cap and the floor slat at the same time.