Truck dumpers have a wide variety of backstops with many different functions. We have simplified it so you can find which option is best for you.
Fixed Backstops:
Fixed backstops are the most common type of backstops. They are also the simplest, and easiest to maintain. A fixed backstop is a fully welded steel structure built to a predetermined height. The backstop heights are based on the trucks the dumper and are designed to receive and based on customer preference. Occasional cleaning and painting are the only required maintenance items for a fixed backstop.
Manually Adjustable:
Manually adjustable backstops are very similar to fixed backstops, but the cross beam can be adjusted vertically to accommodate a wider range of trailers. The cross beam is adjusted by two manual jacks on the inside of the backstop uprights. The beam ends are pinned for added safety. Typically beam heights range from 36″ to 50″, but custom ranges are available.
Hydraulicly Adjustable
Hydraulicly adjustable backstops are identical to the manually adjustment version but are powered by hydraulic cylinders rather than manual jacks. The cylinders are located on the outside of the backstop uprights. The backstop height is adjusted from a separate panel (shown) or from the main dumper control panel.
Toll Gate:
Toll gate backstops are used on standard pivot dumpers combined with below-grade receiving hoppers. The toll gate backstop raises to allow trucks to drive through and onto the dumper deck. The backstop then lowers so the truck and back up and unload. The cross beam of a toll gate backstop can also be set to various heights to accommodate different types of trailers. Check out this video of a toll gate backstop in action.
Potato Gate:
Potato gate backstops are a version of a hydraulicly adjustable backstop with an added gate for controlled material flow. The lower structure and crossbar are a standard hydraulic backstop. The top section is a hydraulic-operated gate that can be raised and lowered to control or meter the material flow from the trailer during unloading. These gates are typically used for potatoes but can handle other materials as well.
Pop Up:
Pop-up backstops are used in a similar style as toll gate backstops. They are typically used with drive-over/below-grade hoppers. The backstop is a large structural block and retracts flush with the deck to allow the truck to pass over. It then extends to allow the truck to back up and unload. Pop-up style backstops are less commonly used than toll gate styles.
Wheel Lock:
Wheel lock backstops are rotating structures that are hydraulicly operated. The wheel locks lay flush with the deck and extend upward to lock/chaulk the trailer wheels without contacting the bumper. Wheel lock backstops are mostly found on older model dumpers and are not commonly used.
Bumpers:
Airoflex backstop bumpers are sturdy rubber bumpers (commonly used on the truck dock) with a steel cover. The steel cover protects and extends the life of the rubber bumper. Steel covers are optional and can be removed if desired. The bumper mounting system is fully internal and contained within the bumper so there are NO protruding / sharp components to damage trailers. Bumpers and covers are a stocked spare part at Airoflex and are replaceable. Only certain models of backstops can use bumpers. See the chart below for more details.
Looking for Airoflex truck dumper and trailer tipper replacement parts? Search our large in-stock inventory for pins, pin eyes, A-frame bearings, pivot bearings, stuffing boxes, adjustable packing glands, packings, spanner wrenches, and replacement cylinders for the main dumper, backstops, pit doors, and wheel locks. To order parts, give our sales department a call or send us an email.
Download the spare parts brochure. See Airoflex Spare Parts Terms and Conditions.