Auxiliary unit and system for electrically driving a truck-mounted concrete pump

An auxiliary unit for electrically driving a truck-mounted concrete pump, wherein the truck-mounted concrete pump has a hydraulically driven concrete pump system for conveying concrete and a hydraulic pump drive system, a hydraulic oil tank, and an internal combustion engine, wherein the internal combustion engine is arranged to drive the hydraulic pump drive system, wherein the hydraulic pump drive system is arranged to drive the concrete pump system, wherein the auxiliary unit has an auxiliary hydraulic pump drive system and an electric motor for driving the auxiliary hydraulic pump drive system, wherein the auxiliary hydraulic pump drive system is configured to be connected to the truck-mounted concrete pump for driving the concrete pump system.

A system comprising:

• a truck-mounted concrete pump having a hydraulically driven concrete pumping system for conveying concrete, a hydraulic pump drive system, and an internal combustion engine, the internal combustion engine configured to drive the hydraulic pump drive system, the hydraulic pump drive system configured to drive the concrete pumping system;
• and
• an auxiliary unit having an auxiliary hydraulic pump drive system for hydraulically driving the concrete pump system and an electric motor for driving the auxiliary hydraulic pump drive system, wherein the auxiliary hydraulic pump drive system of the auxiliary unit is connected to the concrete pump system of the truck-mounted concrete pump via hydraulic supply lines.