Husqvarna Ab

Tommy Olsson

Rajinder Mehra

Ulf Johan Petersson

Lars Gustafsson

Fredrik Theander

Simon Andersson

Richard Bälter

Joakim Ed

Max Claesson

Mehra Rajinder

The present disclosure relates to a vehicular work machine () comprising a first electric motor arrangement () comprising one or more electric motors ('), and a second electric motor arrangement () comprising one or more electric motors (&#x2032;) separate from said one or more electric motors (&#x2032;) of the first electric motor arrangement (). The vehicular work machine () further comprises a power connection () adapted to be connected to an external electric power source (), an energy storage arrangement () and a hydraulic pump assembly () that is adapted to power hydraulic devices () comprised in the vehicular work machine (). At least one electric motor () in each electric motor arrangement () is adapted to propel the hydraulic pump assembly (). Said one or more electric motors (&#x2032;) in the first electric motor arrangement () are arranged to be electrically powered from the external power supply (), and said one or more electric motors () in the second electric motor arrangement () are arranged to be electrically powered from the energy storage arrangement ().

Hybrid vehicular work machine

The present disclosure relates to a vehicular work machine () that is adapted for handling at least two different interchangeable tools (). The machine () also comprises a user control device () and a water supply arrangement () that is adapted to distribute water for retaining dust that is created when a tool () is used, The water supply arrangement () comprises a controllable valve () that is arranged to control the flow of the water that is distributed via at least one nozzle (). The user control device () is arranged for selection of a desired tool, where at least one selectable tool is associated with a certain predefined water setting. Each water setting relates to a certain relative flow of distributed water during a certain time that is related to the time said tool () is chosen and performing a certain work procedure, and/or to the time said tool () is chosen and ready to perform a certain work procedure.

Vehicular work machine and method for vehicular work machine water control

Industrial vacuum cleaner configured for servicing at least one construction tool, said vacuum cleaner comprising a vacuum inlet, wherein said vacuum cleaner further comprises a controller and connected to said controller a wireless transceiver, a memory, and at least one location and/or orientation sensor configured for detection of vacuum cleaner location and/or localization of other objects in relation to the vacuum cleaner and wherein the vacuum cleaner further comprises means for propulsion controlled by said controller.

Industrial automated vacuum cleaner and method for automated servicing of construction tools

A carrier comprising a hydraulic cylinder having a piston, a controller and a piston position sensor, wherein the carrier is arranged to carry an accessory through the use of the hydraulic cylinder and wherein the controller is configured to: receive piston position information; determine a direction of movement of the piston; and if the piston position equals a stop distance from an end wall of the hydraulic cylinder in the direction of movement, abort the movement.

Arrangement and method for operating a hydraulic cylinder

A carrier comprising at least one hydraulic cylinder having a piston, a controller and a piston position sensor, wherein the carrier is arranged to carry a tool through the use of the hydraulic cylinder and wherein the controller is configured to: receive control input for moving the tool; receive piston position information for at least one piston of the at least one cylinders; determine a current angle for the tool based on the piston position information; and determine that the current angle approximates a desired angle, and in response thereto halt the tool at the desired angle. According to an aspect the controller may be configured to detect and determine the position of a subject relative the carrier based on hydraulic pressure information and tool operational information. Further, the application concerns methods applied with the embodiments of said carrier.

Arrangement and method for operating a hydraulically operated boom carrying a tool

An apparatus (e.g., robotic vehicle, control device, headpiece, etc.) including processing circuitry () configured to receive robotic-vehicle-positioning-information indicative of robotic vehicle position data of a robotic vehicle () transiting a work area at one or more locations on the work area; receive operator-positioning-information indicative of operator position data of an operator controlling the robotic vehicle (); generate a virtual line-of-sight vector () based on the operator-positioning-information; generate a virtual sight area () based on the virtual line-of-sight vector () and a predetermined sight area parameter; determine if the virtual sight area () intersects with the robotic-vehicle-positioning-information; and initiate one or more precautionary measures when the virtual sight area () does not intersect with the robotic-vehicle-positioning-information.

Apparatus for determining operator awareness and for initiating precautionary measures on a robotic vehicle

A construction site status monitoring device is provided including processing circuitry configured to receive sensor data associated with a construction site from a scout device and generate a site map based on the sensor data for deployment of the construction device.

Device for scouting a construction site for construction device deployment

A remote controlled demolition robot () comprising a controller () and at least one actuator () controlled through a hydraulic system () comprising at least one valve () and a hydraulic gas accumulator (), wherein the controller () is configured to determine a fluid flow in the hydraulic system (), determine if the determined fluid flow in the hydraulic system is above a first threshold, and if so discharge the accumulator () to provide power to the actuator (); and determine if the determined fluid flow in the hydraulic system is below a second threshold, and if so charge the accumulator () for buffering power in the hydraulic system ().

Energy buffer arrangement and method for remote controlled demolition robot

Industrial vacuum cleaner configured for servicing at least one construction tool (), said vacuum cleaner () comprising a vacuum inlet (), wherein said vacuum cleaner () further comprises a controller () and connected to said controller () a wireless transceiver (), a memory (), and at least one location and/or orientation sensor () configured for detection of vacuum cleaner location and/or localization of other objects in relation to the vacuum cleaner () and wherein the vacuum cleaner () further comprises means for propulsion () controlled by said controller ().

A carrier comprising at least a first hydraulic cylinder and a second hydraulic cylinder both having each a piston and a piston position sensor, wherein the carrier is arranged to carry a tool through the use of the hydraulic cylinders and wherein the controller is configured to: receive control information to move the tool in a direction along a working line; receive position information for the first cylinder; receive position information for the second cylinder; determine if the working line for the tool is maintained, and, if the working line is not maintained, then adapt for the movement of the first cylinder by providing control of the second cylinder to maintain the working line for the tool and thereby feeding the tool along the working line.

Arrangement and method for operating a hydraulically operated boom carrying a tool in a carrier

An implement coupling device () on a working machine () comprises a coupling means () provided with a first shaft (); an engagement means () provided with a second shaft () arranged parallel to the first shaft (); at least one linkage () comprising a first portion () connected to the first shaft () and second portion () connected to the second shaft (), which first and second portions are connected by a pivot joint (); and a wedge () means arranged to be removably mounted between the first and second portions (), wherein the coupling means () and the engagement means () are displaceable relative to each other in a direction at right angles to the first and second shafts () to attach or release the implement. At least one portion () making up a linkage () is detachably fixed to its respective shaft () by a locking means () in a longitudinal recess () at right angles to the shaft () and engaging with a tangential recess (&#x2033;) in the outer surface of the shaft ().

Implement coupling device and a machine provided with such a device

A remote controlled demolition robot () comprising a controller () and at least one control switch () for providing a control signal that is received by the controller (), wherein the controller () is configured to control the operation of a corresponding robot part (). The controller () is further configured to: receive a pressure sensor reading from a pressure sensor () for a proportional hydraulic valve (), said pressure sensor reading indicating a standby pressure; provide the control signal to the valve (); and increase a signal level of the control signal provided to the valve () until a change in the pressure is detected; determine a starting offset for the valve (), said starting offset corresponding to the current signal level of the control signal.

Automatic tuning of valve for remote controlled demolition robot

A remote controlled demolition robot () comprising a controller () and at least one actuator () controlled through a hydraulic system () comprising at least one valve () connected to a corresponding actuator for a tool () and a pump (). The controller () is configured to operate in a first mode wherein the fluid flow is controlled through the at least one valve (), wherein said valve () is a proportional valve, receive a pressure indication indicating a pressure in the hydraulic system () and determine if the pressure in the hydraulic system () is above a first mode threshold and/or if a pressure change fulfills a first mode condition, and if so operate in a second mode wherein the at least one valve () is in an opened state and the fluid flow is controlled through the pump ().

Growing community of inventors

Mölndal, Sweden

Tommy Olsson