Belt type bucket elevators

Description

The bucket elevator casings are selfsupporting, but they require horizontal guides at least every 15 meters and below the elevator head. The bucket elevator head comprises a lower section with doors to access the adjustable discharge plate, and braced bearing mountings, for the pedestal bearings which support the drive shaft, the shaft exit points use grease filled radial shaft seals. The upper sections comprise a multipart removable hood with an inspection flap. A drive platform is mounted on the side of the lower part of the head for supporting a wide variety of commercially available drives. If required a maintenance platform and or an overhead support/ service beam can be fitted if required. An elevator drive normally consists of a geared motor unit, which is normally connected to a frequency controller for maintenance purposes.For higher power requirements, we recommend a drive unit with a bevel spur gearbox, and standard motor optionally with auxiliary drive. Starting characteristics can be optimized by a hydraulic clutch or an electric soft start.

The double or single leg casing is a torsionally rigid, sheet metal housing constructed of standard section lengths with flange connectors. The maintenance and assembly door position should preferably be located in the elevators raising casing leg, approximately 0.8 m above a platform.

The elevator boot is optionally designed with either internal, oil-filled bearings or external pedestal bearings. With external bearings, the shaft exit points are sealed by gray cast-iron stuffing boxes. There are large assembly doors and cleaning doors on both sides. The belt take-up tension is generated by a parallel weight or spindle take-up device. Whereas the parallel weight take-up automatically compensates for belt stretch, the spindle take-up requires manual readjustment.

The driving pulley has a structured rubber covering. Easy to replace, bolt-on, dished rubberized segments are available upon request.

The take-up pulley is designed as a cage drum. Internal cones guide any material that enters the drum out to the sides..

The buckets are manufactured according to DIN or our works standard. The materials used are steel, stainless steel, aluminum, plastic or rubber.

The bucket attachments are selected according to the loads to be handled. Rubber strips are fitted between the belt and the backs of the bukkets. The buckets are attached by means of belting bolts, spherical or half-round segments with countersunk bolts. The belts are available with textile or wire-cable reinforcement. Hot-material rubber compounds are used for transporting high-temperature materials. The belt is jointed by mechanical connecting brackets or claw connectors. Belts with a low linear expansion can be continuously vulcanized.

Standard safety devices, comprising off-track governors, speed governors and level indicators, to monitor the operating status of the bucket elevator are incorporated.rkes.

Additional accessories are available.