A concrete mixer vehicle includes a chassis, a tractive assembly coupled to the chassis and configured to propel the concrete mixer vehicle, a mixing drum rotatably coupled to the chassis, and an electromagnetic device configured to convert electrical energy to mechanical energy to drive the tractive assembly. In a first configuration, a first battery module is removably coupled to the chassis and configured to provide the electrical energy to the electromagnetic device, and in a second configuration, the first battery module is removed from the chassis and replaced with a second battery module, the second battery module removably coupled to the chassis and configured to provide the electrical energy to the electromagnetic device.

A gunite trailer includes a frame operable to be coupled to a vehicle. A compressor is disposed on the frame, a cement bin is coupled to the frame and operable to deliver cement, a sand bin is coupled to the frame and operable to deliver sand, and a mixing bin is coupled to the frame and operable to receive the sand from the sand bin and the cement from the cement bin. A delivery connection is operable to receive the sand and the cement from the mixing bin. The delivery connection is operable to be coupled with a delivery system. The delivery system is operable to combine the sand and the cement with a fluid at a point of application to form gunite. The delivery system is operable to convey the gunite to a surface.

A gunite trailer includes a frame operable to be coupled to a vehicle. A compressor is disposed on the frame, a cement bin is coupled to the frame and operable to deliver cement, a sand bin is coupled to the frame and operable to deliver sand, and a mixing bin is coupled to the frame and operable to receive the sand from the sand bin and the cement from the cement bin. A delivery connection is operable to receive the sand and the cement from the mixing bin. The delivery connection is operable to be coupled with a delivery system. The delivery system is operable to combine the sand and the cement with a fluid at a point of application to form gunite. The delivery system is operable to convey the gunite to a surface.

A concrete/cement resurfacing machine integrates a dust collection subsystem and an overlay mixing/distribution subsystem, enabling a single operator to steer the machine to a desired floor location and deposit mixed, cementitious overlay material. The combination of dust collection and overlay mixing saves considerable time and achieves improved results, eliminating the need for separate vacuum machines while reducing the risk that dust will be released as bags of dry ingredients are added to the mixing tank. A single propane engine powers a hydraulic pump, with fluid being routed to three separate hydraulic motors with associated control valves to provide for forward/reverse locomotion, bidirectional paddle mixing, and vacuum generation. The dust collection system is preferably a two-stage system including a vacuum collection tank and a HEPA filter.

A concrete/cement resurfacing machine integrates a dust collection subsystem and an overlay mixing/distribution subsystem, enabling a single operator to steer the machine to a desired floor location and deposit mixed, cementitious overlay material. The combination of dust collection and overlay mixing saves considerable time and achieves improved results, eliminating the need for separate vacuum machines while reducing the risk that dust will be released as bags of dry ingredients are added to the mixing tank. A single propane engine powers a hydraulic pump, with fluid being routed to three separate hydraulic motors with associated control valves to provide for forward/reverse locomotion, bidirectional paddle mixing, and vacuum generation. The dust collection system is preferably a two-stage system including a vacuum collection tank and a HEPA filter.

A vehicle includes a chassis, an engine, a drum assembly, and a control system. The drum assembly includes a drum configured to receive drum contents and a drive system coupled to the drum. The drive system is configured to rotate the drum to agitate the drum contents. The control system is configured to operate the drive system at a drive speed; receive data comprising at least one of (i) a drum speed command from a remote monitoring system, (ii) a signal from a mixture sensor configured to acquire mixture data indicative of a current property of the drum contents, (iii) the current property of the drum contents from the remote monitoring system, and (iv) an initial property of the mixture from at least one of a batching system, the mixture sensor, and a user input device; and adjust the drive speed of the drum based on the data.

A concrete mixer truck includes a chassis, a plurality of tractive assemblies coupled to the chassis, a mixing drum rotatably coupled to the chassis, the mixing drum defining an internal volume configured to contain material and an aperture through which the material can enter and exit the internal volume, an energy storage device positioned at a rear end of the chassis and configured to provide electrical energy, and an electromagnetic device electrically coupled to the energy storage device, where the electromagnetic device is configured to receive the electrical energy from the energy storage device and provide mechanical energy to drive at least one of the plurality of tractive assemblies to propel the concrete mixer truck.

A concrete mixer truck includes a chassis, a plurality of tractive assemblies coupled to the chassis, a mixing drum rotatably coupled to the chassis, the mixing drum defining an internal volume configured to contain material and an aperture through which the material can enter and exit the internal volume, an energy storage device positioned at a rear end of the chassis and configured to provide electrical energy, and an electromagnetic device electrically coupled to the energy storage device, where the electromagnetic device is configured to receive the electrical energy from the energy storage device and provide mechanical energy to drive at least one of the plurality of tractive assemblies to propel the concrete mixer truck.

The invention relates to an automatic system for monitoring the mixing of conglomerates. The inventive system can be used to monitor and measure the volume of a conglomerate, i.e. a concrete, mortar or other similar product, and the conditions in which the conglomerate is being mixed inside a mixer. The invention is characterized in that the system is provided with a sensor which rotates integrally with the mixer and which is fitted with a blade that is sensitive to the stresses exerted by the conglomerate thereon. The invention is also characterized in that the aforementioned information is transmitted to one or more terminals, by means of radio communication or other similar wireless communication means, for use in industrial processes.

The invention relates to an automatic system for monitoring the mixing of conglomerates. The inventive system can be used to monitor and measure the volume of a conglomerate, i.e. a concrete, mortar or other similar product, and the conditions in which the conglomerate is being mixed inside a mixer. The invention is characterized in that the system is provided with a sensor which rotates integrally with the mixer and which is fitted with a blade that is sensitive to the stresses exerted by the conglomerate thereon. The invention is also characterized in that the aforementioned information is transmitted to one or more terminals, by means of radio communication or other similar wireless communication means, for use in industrial processes.