Machine Screw Jacks with Boot used in the Manufacturing of Sand Delivery Trailer
| Model | Capacity | Ratio | Rise | Screw Type |
| WJT3250-30-UP-T4 | 50 Tons | 32:1 | 30” travel | Machine Screw Jack with Boot |
Features
- Front and rear jacks move independently
- Screw jacks replaced hydraulic cylinders for safety reasons
- Virtually maintenance-free
Manitoba based Convey-All Industries Inc. designs and manufactures a complete line of material handling conveyors to suit any need for transporting bulk products. One product in particular, the sand delivery trailer, is designed for sand-fracturing down-holes in old oil wells.
The trailer needed to be jacked up on an angle to allow a conveyor to run underneath the trailer so that the sand could be delivered to the mixer before being pressurized for the actual fracturing operation.
Originally using hydraulic cylinders, the design was altered with a safety upgrade by replacing the cylinders with screw jacks. Using four 50-ton Joyce® mechanical screw jacks (model WJT3250-30-UP-T4 Keyed with boot) the trailer can be raised and lowered to the appropriate level, as the front and rear screw jacks can be moved independently of one another. This allows the trailer to empty out the sand onto the conveyor safely and efficiently.
