Abstract:
A zero-pressure accumulating conveyor including a bed defined by rotatable rollers mounted in parallel sidewalls and powered by an endless drive chain. Pneumatic actuators lift the drive chain into engagement with the rollers to empower same. Sensor rollers divide the bed into distinct zones. Sensor rollers are retained in operative position relative to the conveyor bed by unique sensor brackets. A primary sensor roller bracket includes a bore with a piston movable there within; the cooperating secondary sensor roller bracket is spring biased in a first direction. Valves, and pneumatic circuitry controlled by such valves, extend along the length of the conveyor. Such valves are operated by the primary sensor roller brackets to regulate the flow of air pressure into the bores of the brackets and into the actuators. The actuators, when the pressure therein is bled-off, allow the chain in a particular zone to drop out of contact with the rotatable rollers. When the bore in the primary sensor roller bracket is pressurized, the bracket moves in an arc that forces the sensor roller below the plane of the conveyor. In such position, the sensor roller is not actuated as items travel thereover, and the life of the accumulating conveyor is significantly extended.
Abstract:
The invention relates to a transport belt consisting of a fabric-reinforced plastic sheet material having a textile reinforcing layer which extend in the longitudinal direction and is formed from interlaced warp and weft threads. To obtain good overall strength together with a simple structure of the transport belt, it is provided that the reinforcing layer is formed by a strength component in the form of a double pile cloth comprising an upper and a lower fabric which are held together by low, weft-binding pile threads in such a way as to form a tension-resistant unit of upper and lower fabric in which the pile threads, in the event of a bending stress on the transport belt, permit a small degree of recoverable flexibility between the upper and the lower fabric in the warp direction.
Abstract:
A process and a device enable tubular straps to be pulled or guided through support roller stations. The strap is rolled until the diameter (D) of the roll is less than the operating diameter (D') and is held in this position by a clamping means which moves with it, such as a mesh sleeve. The desired diameter of the strap is obtained by means of a device whose diameter decreases like that of a nozzle.
Abstract:
An inversion apparatus uses a first pair of bend rollers to twist a conveyor belt 90.degree., and a second pair of bend rollers to twist the conveyor belt an additional 90.degree.. The two bend rollers of each pair are rotatably mounted at rotational axes which are perpendicular to each other. Preferably, stabilizer rollers are provided between the bend rollers of each pair, and cylindrical rollers are provided to feed the conveyor belt to and from the bend rollers. The stabilizer rollers and bend rollers are preferably curved so as to equalize the tension across the width of the belt.
Abstract:
A conveyor belt for circulating within a high temperature furnace, which is consisted of a desired number of flattened cylinders, each of the cylinders being composed of a number of carbon or ceramic fibers cylindrically wound up and flattened. The fibers extend substantially in parallel with a longitudinal or moving direction of the conveyor belt, so that they can exhibit well their tensile strength when the belt is circulated through the furnace. The flattened cylinders are hinged to each other by hinge pins made of carbon or ceramic materials, and are kept as flattened and stretched by means of planar stretchers located within an inner hollow space of each of the flattened cylinders and made also from carbon or ceramic materials.
Abstract:
The present invention is directed to a conveyor belt system for transporting materials by directly driving a conveyor belt. A plurality of continuous cables are disposed generally parallel one to the other. A continuous conveyor belt is disposed between the continuous cables which includes a plurality of unitary, open top, pocket-like receptacles for transporting the materials. The receptacles are located so that they extend above and below the plane of travel of the continuous cables whereby the materials can be transported within the confines of the receptacles in both a horizontal path of travel and a vertical path of travel, respectively, until the materials are conveyed to the point of travel where they are discharged from the conveyor system for further subsequent processing. This results in the continuous, uninterrupted transportation of the materials carried by the conveyor belt for extended periods of time.
Abstract:
A belt (1), suitably closed into ring-shape and carried around at least two turn-round and/or driving cylinders (2, 3), is made of plastics material, particularly of polytetrafluoroethylene, or the like, or it is constituted by a fabric, particularly of glass, impregnated and/or coated with plastics material, particularly with polytetrafluoroethylene. Both longitudinal edges of the belt have an enlarged guiding bead (6) resting on the edge (4) of each end face of the turn-round cylinder and/or driving cylinder (2, 3) or on an annular step of said cylinder, or engaging into an annular groove in said cylinder. The enlarged guiding bead (6) may be constituted by a flexible core (5) incorporated within the respective longitudinal edge of the belt (1), and particularly enwrapped by a marginal portion (101) of the belt (1) which is folded over around the core (5) and is secured to said belt (1).
Abstract:
This disclosure relates to an endless belt comprising a bed of elastic material and a plurality of longitudinally extending tension cords embedded therein. Each of the cords has its ends interconnected to form a junction, and the junctions of the cords are distributed over the length of said belt so that the junctions are longitudinally offset.The disclosure further relates to a process of producing such an endless belt.
Abstract:
A clamping device for conveyor belts has a pair of crossbars disposed on opposite sides of the conveyor belt and clamping bars each disposed between a respective crossbar and the conveyor belt. The device is mounted through the clamping bars and a hydraulic unit such as deformable hoses or an array of piston-and-cylinder units is braced between one of the clamping bars and the respective crossbar.
Abstract:
A conveyor system has a track defining an endless path traversing a loading station and an unloading station and having a transport stretch therebetween, an annular succession of longitudinally spaced trucks riding on the track, and an endless conveyor belt extending along the track and having a pair of longitudinally extending edges one of which is suspended from every other truck and the other of which is suspended from the remaining trucks. A drive element extends along the track and engages the trucks to advance the belt in a longitudinal transport direction from the loading station through the transport stretch to the unloading station and then back to the loading station. At least one carrier is connected to the lower end of at least one hanger having an upper end releasably attachable to the belt so as to suspend the carrier from the belt in the transport stretch. The carrier can be a flat rigid pallet having corners each connected to the lower end of a respective such hanger. It can also be an upwardly open material-carrying vessel similarly having corners each connected to the lower end of a respective such hanger or a simple skilift-type chair suspended from a rigid hanger, a system which makes it very convenient for individuals to move along the often very long transport stretch in a mine.