Patents Assigned to Volvo Constructions Equipment AB
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Patent number: 11859531Abstract: An auxiliary generator drive for a belt driven generator being powered by an internal engine, the auxiliary generator drive including a hydraulic motor, wherein the hydraulic motor is arranged and adapted to drive the generator and to be driven via a hydraulic pump powered by the internal engine.Type: GrantFiled: February 4, 2022Date of Patent: January 2, 2024Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Heinz Tiedemann, Anton Mahler, Roland Wiktor
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Patent number: 11859368Abstract: An electric powertrain for a working machine, including: a first electric machine, a second electric machine, a propulsion axle for propulsion of the working machine, a transmission assembly comprising: a first input shaft drivingly connected to the first electric machine, a second input shaft drivingly connected to the second electric machine, a first output shaft drivingly connected to the propulsion axle, the first and the second input shafts being selectively drivingly connectable to the first output shaft, at least one second output shaft for power take-off, to which the second input shaft is drivingly connected, a set of gears including at least two selectable gear ratios for transfer of torque, wherein at least the first input shaft is drivingly connectable to the first output shaft via the set of gears.Type: GrantFiled: December 19, 2019Date of Patent: January 2, 2024Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Daniel Stålberg, Per Mattsson
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Patent number: 11851851Abstract: A working machine includes an attachment device, and an attachment device carrying equipment enabling detachment and attachment of the attachment device. The working machine further includes a system for monitoring attachment status of the attachment device, the system including: a sensor configuration arranged and configured to indicate the attachment status of the attachment device, and a control unit configured to monitor the sensor configuration to establish the attachment status of the attachment device, and configured to store location data of the attachment device based on the attachment status of the attachment device. An indication that the attachment device is de-attached from the attachment device carrying equipment determines that the location data of the attachment device is stored.Type: GrantFiled: October 5, 2017Date of Patent: December 26, 2023Assignee: Volvo Construction Equipment ABInventors: Javaid Arshad, John Haupt, Jenny Elfsberg
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Patent number: 11851843Abstract: A hydraulic machine includes a tank; a working device including a boom; a boom cylinder which operates the boom and has a large chamber and a small chamber; a floating hydraulic circuit connected to the large chamber, the small chamber, and the tank so as to enable the large chamber, the small chamber, and the tank to communicate with each other; and an operator input device for receiving, from a driver, a request for turning on or turning off the floating hydraulic circuit. In the case of a boom down operation for lowering the boom, it is determined whether the working device floats in the air, and when it is determined that the working device floats in the air, the floating hydraulic circuit can be turned off, even if the request for turning on the floating hydraulic circuit is input to the operator input device.Type: GrantFiled: April 5, 2019Date of Patent: December 26, 2023Assignee: Volvo Construction Equipment ABInventors: Taerang Jung, Sangmin Gwon, Sangki Bae
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Patent number: 11846086Abstract: A hydraulic system for a working machine, the system comprising: an electric machine connected to a first hydraulic machine and to a second hydraulic machine via a common axle, an output side of the second hydraulic machine being connected to an input side of the first hydraulic machine, wherein the first hydraulic machine is a variable displacement hydraulic machine with unidirectional flow; at least one hydraulic consumer hydraulically coupled to an output side of the first hydraulic machine via a supply line and configured to be powered by the first hydraulic machine; a first return line hydraulically coupling the hydraulic consumer to the input side of the first hydraulic machine.Type: GrantFiled: December 12, 2019Date of Patent: December 19, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Bo Vigholm, Johan Hallman
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Patent number: 11845446Abstract: A method is provided for predicting a risk for rollover of a working machine for load transportation. The method includes: obtaining ground topographic data of a geographical area located close to the working machine from a ground topographic detection system; extracting a ground gradient from the ground topographic data; obtaining weight information of the load being currently transported by means of an on-board load weighting system or by receiving load information originating from the device that loaded the load being currently transported; determining a current maximal allowed ground gradient for the working machine based on the weight information; and predicting a risk for working machine rollover if the working machine approaches a geographical area including a ground gradient exceeding or being close to the current maximal allowed ground gradient for the working machine.Type: GrantFiled: September 29, 2020Date of Patent: December 19, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Calle Skillsäter, Patrik Wahlström
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Patent number: 11840824Abstract: Provided is a hydraulic machine. A pump pressurizes fluid using power provided by a power source. An actuator works using the pressurized fluid from the pump. A recovery part recovers energy from fluid discharged from the actuator. A first operator input device receives a desired input from operator to select an eco-mode or a boost mode. The recovery part includes an accumulator storing hydraulic energy by receiving the fluid discharged from the actuator and an assist unit assisting the power source using the hydraulic energy stored in the accumulator. The controller controls the pump such that output power of the pump does not exceed P1max when the eco-mode is selected or the assist unit does not assist the power source and that the output power does not exceed P2max when the boost mode is selected and the assist unit assists the power source, where P1max<P2max.Type: GrantFiled: December 13, 2022Date of Patent: December 12, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Seonggeun Yun, Byoungho Lee, Hoenghwan Ahn, Sangkyu Joo, Seunghyun Lee, Taerang Jung
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Patent number: 11840821Abstract: A removable tool assembly for a backhoe digging apparatus of a construction equipment machine having spaced apart parallel first and second fastening pins is disclosed. The removable tool assembly includes an attachment mechanism for releasably attaching the removable tool assembly onto the backhoe digging apparatus, the attachment mechanism including: a first attachment element having first receiving areas adapted to receive the first fastening pin, and a second attachment element having second receiving areas adapted to receive the second fastening pin, wherein the second attachment element is movable relative to the first attachment element between a first position, in which the first and second fastening pins can be removed from the first and second receiving areas.Type: GrantFiled: April 27, 2018Date of Patent: December 12, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Didier Reymond, Gregory Arnal, Edgar Bond
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Publication number: 20230392325Abstract: A vibratory compaction machine includes a chassis, at least one drum, and a control system. The at least one drum is rotatable about an axis that faces in a Y-axial direction and is mounted to the chassis to allow rotation of the drum over a work surface. The at least one vibration mechanism is configured to generate vibrations that are transmitted as impacts directed in a Z-axial direction by the at least one drum to the work surface. The at least one vibration mechanism is provided with a plurality of different amplitude settings. The control system is configured to measure acceleration forces of the at least one drum in a direction that substantially corresponds to an X-axial direction, wherein the acceleration forces are generated by the vibration mechanism and the X-axial direction extends in a direction that is substantially orthogonal to the Y-axial direction and the Z-axial direction.Type: ApplicationFiled: October 13, 2021Publication date: December 7, 2023Applicant: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Scott KELLER, Sangryu LEE
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Patent number: 11821442Abstract: A hydraulic energy handling system for a working machine includes a high-pressure side; a low-pressure side; a hydraulic machine for mechanically driving, and being mechanically driven by, a mechanical driveline of the working machine; at least one high-pressure hydraulic energy storage connected to the high-pressure side; a hydraulic motor; a hydraulic pump arranged to supply hydraulic fluid to an inlet side of the hydraulic motor; and a return line for conducting hydraulic fluid to a hydraulic tank. The system further includes a pressure relief valve between the high-pressure side and the return line and arranged to discharge excess hydraulic energy from the high-pressure side to the return line to provide a braking force on the mechanical driveline; and a priority valve arrangement connected to an outlet side of the hydraulic motor to direct a prioritized flow of hydraulic fluid to the low-pressure side.Type: GrantFiled: October 18, 2018Date of Patent: November 21, 2023Assignee: Volvo Construction Equipment ABInventors: Karl Uebel, Robert Morelius, Erik Norlin
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Patent number: 11808331Abstract: A transmission assembly includes a common ring gear assembly, a first sun gear, a first planet carrier, a second sun gear and a second planet carrier. A set of planet gears of each one of the first and second planet carriers meshing with the common ring gear assembly. The set of planet gears of the first planet carrier meshing with the first sun gear and the set of planet gears of the second planet carrier meshing with the second sun gear. The transmission assembly further includes a transmission housing. The second sun gear is adapted to be connected to a transmission input shaft; the common ring gear assembly is adapted to be connected to a transmission output shaft, and the second planet carrier and the first sun gear are operatively connected to each other.Type: GrantFiled: October 22, 2020Date of Patent: November 7, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Per Mattsson, Mathias Lehikoinen
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Patent number: 11802390Abstract: A hydraulic machinery may include: a boom actuator including a large chamber and a small chamber; a tank; and an energy recovery circuit provided between the boom actuator and the tank, wherein the energy recovery circuit includes: a discharge valve provided between the large chamber and the tank to allow or block the flow of fluid from the former to the latter; a regeneration valve connecting the large chamber and the small chamber to allow or block the flow of fluid from the former to the latter; a recovery part for recovering energy; and a first valve provided between the large chamber and the recovery part to allow or block the flow of fluid from the former to the latter.Type: GrantFiled: April 5, 2019Date of Patent: October 31, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Taerang Jung, Sangmin Gwon, Sangki Bae, Dongsoo Kim
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Patent number: 11797015Abstract: The invention relates to a system and a method for determining a target vehicle speed for a vehicle moving between a starting location and a target location at a worksite.Type: GrantFiled: April 4, 2018Date of Patent: October 24, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Calle Skillsäter, Andreas Norrman
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Patent number: 11795661Abstract: A method of controlling a rotatable load by a hydraulic system, the method includes determining if the hydraulic system is in a first operating state or a second operating state; controlling the rotatable load in a valve control mode if the hydraulic system is in the first operating state, the valve control mode including controlling the rotatable load by controlling a valve arrangement; controlling the rotatable load in a displacement control mode if the hydraulic system is in the second operating state, the displacement control mode including controlling the rotatable load mainly by controlling the displacement of a hydraulic machine; and applying a non-zero absolute minimum displacement limitation to the hydraulic machine at least in the valve control mode.Type: GrantFiled: May 21, 2019Date of Patent: October 24, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Mika Sahlman, Kim Heybroek
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Patent number: 11782412Abstract: A method including determining a total amount of unprocessed material that has been dumped into the material processing device during a first time period determining a total amount of unprocessed material that has been processed during the first time period; determining a reference level of unprocessed material at the first point in time; predicting, based on the current level of unprocessed material contained in the material processing device and on an expected future processing rate of the material processing device at least one of an earlier and a later point in time at which the level of unprocessed material is expected to fall below a lower or upper limit; establishing a desired time-of-arrival period extending between a start point and an end point corresponding to the earlier and later points in time respectively; and adapting a speed of the first load-carrying vehicle.Type: GrantFiled: March 4, 2019Date of Patent: October 10, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Calle Skillsäter, Andreas Norrman
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Patent number: 11773569Abstract: A power mode recommendation system for a construction machine including a hydraulic system driven by working fluid supplied by a hydraulic pump. A controller configured to analyze engine torque, flow rates of working fluid in use, amounts of fuel consumption of the plurality of power modes and to recommend a power mode indicating lowest fuel consumption, from among the plurality of power modes, using the analysis. A human-machine interface (HMI) device displays the power mode recommended by the controller to an operator. The system recommends an efficiency power mode to an operator by analyzing not only the amount of fuel consumed by the construction machine, but also flow rates of working fluid in use and operating speeds.Type: GrantFiled: March 9, 2018Date of Patent: October 3, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Sanghee Lee, Chunhan Lee, Okjin Suk, Miok Kim, Sanggyun Shin
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Patent number: 11768232Abstract: Provided is a method of operating an electrical system including a first battery, a second battery coupled in series with the first battery, and a battery equalizer coupled to the first battery and the second battery and configured to supply an equalizing current to the first battery. The method includes monitoring a level of the equalizing current, determining, based on monitoring of the level of the equalizing current, that the equalizing current is saturated, and reducing a level of current supplied at a positive terminal of the first battery in response to determining that the equalizing current is saturated. The methods may take an action to reduce the demand for current that is supplied by the first battery.Type: GrantFiled: January 25, 2018Date of Patent: September 26, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Grégoire Artur Du Plessis, Frederic Leroy
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Patent number: 11753790Abstract: A cross-support assembly extends between and connects two generally parallel lifting arms of a working machine. A front end of the lifting arms is connectable with an implement. A back end of the lifting arms is pivotably connectable with a front unit of the working machine. The cross-support assembly provides an axis of vision through the cross-support assembly for at least two different lifting positions of the lifting arms by having an opening in the cross-support assembly.Type: GrantFiled: October 10, 2018Date of Patent: September 12, 2023Assignee: Volvo Construction Equipment ABInventor: Markus Krost
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Patent number: D997964Type: GrantFiled: February 26, 2022Date of Patent: September 5, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Mikael Lundaby, Azad Saleh, Magnus Andersson
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Patent number: D998632Type: GrantFiled: February 26, 2022Date of Patent: September 12, 2023Assignee: VOLVO CONSTRUCTION EQUIPMENT ABInventors: Mikael Lundaby, Azad Saleh, Magnus Andersson