Patents Assigned to Volvo Construction Equipment Holding Sweden AB
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Patent number: 7131686Abstract: An operator protective structure equipped on a cabin of construction machine is capable of moving the cabin along with a front guard by directly installing the front guard on the cabin fixed to an upper frame to protect the operator from an object penetrating into the front of the cabin. The cabin is provided with a bottom plate on a bottom thereof, mounted on an upper frame installed on a lower driving body and independently vibrated relative to the upper frame by connecting the bottom plate to the upper frame through vibration absorbing devices. The operator protective structure includes a front guide provided with a top bar and a bottom bar and installed up and down in front of the cabin to protect the cabin from objects penetrating into a front of the cabin and a top guide formed long on a ceiling of the cabin in a front and rear direction to protect the cabin from falling objects.Type: GrantFiled: November 3, 2005Date of Patent: November 7, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventors: Chun Ho Jo, Chun Jin Yoon
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Patent number: 7131368Abstract: Disclosed is a variable regeneration valve of a heavy equipment in which hunting due to repeated motion of a spool does not occur in a regeneration valve that supplies a return flow of an actuator to a supply port during single operation of the actuator or its composite operation such as composite driving of arm in and swing, and a structure of the variable regeneration valve is simplified to improve process characteristics. The variable regeneration valve includes a hydraulic pump, an actuator connected with the hydraulic pump, a control valve controlling operation, stop, and direction of the actuator, a regeneration switching valve having a first piston, a switching spool, a first elastic member, and a second piston, a first damping orifice, and a second damping orifice.Type: GrantFiled: May 27, 2005Date of Patent: November 7, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventor: Man Suk Jeon
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Publication number: 20060213299Abstract: A transmission comprising three parallel shafts and gearwheels carried by the shafts, which intermesh with one another in pairs for transmitting torque either between the first shaft and the third shaft, or between the second shaft and the third shaft. At least one gearwheel in each pair of intermeshing gearwheels is rotatably supported on its shaft and can be locked to or disengaged from its shaft by means of associated clutch members. Gearwheels on the first shaft and second shaft are coordinated by clutch members, by means of which at least two gearwheels on each shaft can be disengaged from their shaft but coupled together for rotation together in order to permit the transmission of torque from the first shaft via the third and the second shaft back to the third shaft, and from the second shaft via the third and the first shaft back to the third shaft.Type: ApplicationFiled: June 1, 2006Publication date: September 28, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventor: Daniel Jansson
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Publication number: 20060207842Abstract: A protection device for a brake which is cooled by a coolant in a vehicle, the brake having a first active state in which a brake pressure is established in the brake for braking of the vehicle. The device comprises a sensor for measuring the temperature of the coolant of the brake, and a control arrangement interacting with the temperature sensor and the brake in order to reduce or remove the brake pressure of the brake in the first active state in the event of a temperature of the coolant in excess of a predefined value.Type: ApplicationFiled: June 1, 2006Publication date: September 21, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventor: Jonny Strandberg
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Publication number: 20060207275Abstract: A cab (2) for a vehicle (1) including a roof (23) supported by a wall shell (22). The cab (2) bears a heat-evacuating device (3) having a fan and a condenser, the latter of which has a flat basic shape defined in general terms by two opposing large faces, and the condenser projects from the wall shell (22) with large faces thereof oriented at right angles to the wall shell (22).Type: ApplicationFiled: June 10, 2006Publication date: September 21, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventor: Bo JANELING
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Publication number: 20060202541Abstract: An armrest (1) for use with a vehicle seat (2), comprising a unit (3) for supporting an arm of an operator of the vehicle seated in the seat, a first fixing element (4) connected to the armrest unit (3) and a second fixing element (5) can be fastened to the seat (2) on the vehicle. The first and the second fixing element can be adjusted and locked in relation to one another by means of a device (6) for adjusting the position of the armrest unit (3) in relation to the seat when using the armrest. When using the armrest, the adjusting and locking device (6), which links the first fixing element (4) and the second fixing element (5) in at least two different positions, can be used to set the armrest unit (3) to different positions by moving the armrest unit (3) in a direction having a component in the horizontal plane, aligned so that the position of the armrest unit (3) is laterally variable in relation to the seat (2).Type: ApplicationFiled: November 28, 2005Publication date: September 14, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventors: Sveker Armo, Jonny Lindblom
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Publication number: 20060200293Abstract: A method for controlling the gears of a vehicle that has an automatic transmission that is arranged to change gear according to a plurality of gear modes that differ in that changing to a higher gear is carried out at different minimum engine speeds or, if the changing is carried out steplessly, with different degrees of gearing, with the transmission having a forward gear position for driving the vehicle forwards and a reverse gear position for driving the vehicle backwards, comprising detection of an operating parameter and, in response to this production of a parameter signal for a control unit, selection, that is carried out by the control unit, of one of the the gear modes on the basis of the parameter signal's value. The parameter signal represents the total distance that the vehicle has been driven during an individual sequence with at least one of the forward gear position and the reverse gear position.Type: ApplicationFiled: March 15, 2006Publication date: September 7, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventor: Bjorn Brattberg
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Publication number: 20060183592Abstract: The invention relates to an arrangement for driving a wheel of a vehicle comprising a planetary gear set, which in turn comprises a planet carrier. At least one surface of the planet carrier has a toothed structure and extends in such a way that the toothed structure is exposed in the axial direction of the planet carrier. The arrangement comprises a power transmission part and at least one surface of the power transmission pat has a toothed structure that corresponds to the toothed structure of the planet carrier surface and an extent that corresponds to the extent of the planet carrier surface. The toothed structures of the planet carrier and the power transmission part intermesh with one another. The invention also relates to the planet carrier per se.Type: ApplicationFiled: March 8, 2006Publication date: August 17, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventor: Tim Kingston
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Publication number: 20060162975Abstract: A working machine includes a frame, a cab arranged on the frame, and a lateral support arranged between the frame and the cab for taking up load from the cab to the frame when lateral displacement of the cab takes place in a direction toward the side on which the lateral support is arranged to allow an initial lateral displacement of the cab before its function of taking up load is activated.Type: ApplicationFiled: April 8, 2006Publication date: July 27, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventors: Anders Lindqvist, Ulf Granar, Jonny Lindblom
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Patent number: 7069131Abstract: The present invention relates to an apparatus for setting a function of switches of a construction vehicle, enabling a construction vehicle driver to freely set or arrange the switches as desired, so that the driver feels more convenient to use the switches and thus, the work efficiency can be improved. Preferably, the apparatus includes a plurality of switches for generating an on/off signal; a controller for receiving a signal from the switches and outputting a driving signal to drive the work equipments; a plurality of driving units for driving the work equipments; a memory for storing relations between the switches and the driving units driven by the switches; and a pattern editing unit which includes a display screen and a plurality of input buttons, whereby a construction vehicle driver can change the relations between the switches and the driving units, the relations being stored in the memory.Type: GrantFiled: July 14, 2004Date of Patent: June 27, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventor: Dong Soo Kim
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Publication number: 20060125287Abstract: An arrangement for incorporation into a vehicle cab that includes a cab structure (2) that delimits a driver's working area. The arrangement has a support structure (3) arranged to support the cab structure (2) in the event of a considerable inclination of the cab structure relative to the frame (4) of the vehicle.Type: ApplicationFiled: February 24, 2006Publication date: June 15, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventors: Magnus FORNELL, Jonny LINDBLOM
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Publication number: 20060104789Abstract: A working machine includes a lift arm and an implement coupling fixed to the lift arm. The implement coupling includes a locking element which is displaceable between an inoperative position and an operative position in which it is designed to shoot into a hole in the implement in order to lock the imlement to the implement coupling. The locking element, over a first section of its length, has a first cross-section that will allow the first section of the locking element to be shot into the hole in the implement, and over a second section, which adjoins the first section, has a second cross-section which prevents the second section being shot further into said hole. The second section comprises a stop face designed to be brought to bear against the implement when securing the implement to the implement coupling.Type: ApplicationFiled: October 11, 2005Publication date: May 18, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventors: Bo Vigholm, Joakim Sjogren
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Patent number: 7044883Abstract: The invention relates to a device for driving a wheel of a vehicle. The device includes a hub for carrying the wheel in a rotationally fixed manner, a planetary gear connected between a driving axle and the hub, which planetary gear includes a planet carrier which is connected in a rotationally fixed manner to the hub, and an arrangement for fixing the hub and the planet carrier in the intended position relative to one another in the axial direction. Both the hub and the planet carrier include a hole which extends in the axial direction. At least one of the holes forms at least a part of a continuous opening through the hub and the planet carrier in the axial direction. The fixing arrangement comprises an elongate element arranged in the continuous opening and an arrangement for fixing the hub and the planet carrier relative to one another in the axial direction via the elongate element.Type: GrantFiled: September 5, 2005Date of Patent: May 16, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventors: Thomas Andersson, Lars Larsson, Mats Akerblom
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Patent number: 7031817Abstract: The present invention relates to a safety securing system for an operation lever through which work equipment does not operate unexpectedly or suddenly. The safety securing system includes a receiver for receiving a detection signal from an engine rpm detector detecting the engine shaft rpm, a control input detector of the operation lever, and a safety lever position detector, respectively; a data processor for deciding whether the engine starts, whether the operation lever is in the neutral position, and whether the safety lever is in operation; and an output for outputting an engine stop signal, an alarm signal, and a driving signal according to the control input of the operation lever.Type: GrantFiled: June 25, 2004Date of Patent: April 18, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventor: Jin Seob Kim
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Patent number: 7017470Abstract: Disclosed is a flow control apparatus for construction heavy equipment capable of maintaining constant set flow rate regardless of changes in load pressure and pump pressure. The flow control apparatus is composed of a control valve, a flow control valve, and a load check valve. The control valve has a parallel passage, a housing provided with a first load passage and a second load passage, and a control spool provided to be movable in the housing. The flow control valve having a logic check valve provided to be openable between the first load passage and the parallel passage, and a logic control valve controlling a flow rate supplied to a back pressure chamber of the logic check valve. The load check valve is provided between the second load passage and the parallel passage to restrict backflow from the second hydraulic cylinder.Type: GrantFiled: June 16, 2004Date of Patent: March 28, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventor: Hae Kyun Cheong
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Publication number: 20060021340Abstract: The invention relates to a method and system for controlling viscosity of a hydraulic fluid. The viscosity of a hydraulic fluid is usually very much dependent on temperature. By using existing throttles which generate a pressure drop, the hydraulic fluid can be heated by creating a power drain in these existing throttles through a controlled increase of the pressure through them. By controlled heating, the viscosity of a hydraulic fluid can be controlled. According to the invention, the existing throttles are preferably cavity-preventing openings in valves.Type: ApplicationFiled: October 7, 2005Publication date: February 2, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventors: Bo Vigholm, Lennart Strandberg
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Publication number: 20060018765Abstract: Method and arrangement for controlling a work vehicle that includes a hydraulic system (22) having at least one pump (18,180) and at least one actuator (4,5,8,9,10) operatively driven by hydraulic fluid delivered from the pump and at least a first pump (18) is a variable displacement pump. The system (22) is of the load-sensing type in that pump displacement is controlled by a pilot pressure representing a load exerted on the system. The arrangement includes means (63) for reducing the pilot pressure delivered to the first pump (18) so that the first pump displacement is regulated down when there is a need for limiting hydraulic power consumption.Type: ApplicationFiled: July 26, 2005Publication date: January 26, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventors: Patrik Fransson, Kjell Sjogren, Stefan Salomonsson, Bo Vigholm
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Publication number: 20060019789Abstract: An annular member intended to form a part of a bearing unit includes a first portion which radially externally forms a race for receiving at least one row of balls and radially internally is provided with teeth and forms a gear rim. The first portion is provided with a through-hole in the radial direction through the gear rim, which hole has a sufficiently great cross section to allow introduction of the balls radially from inside into the race.Type: ApplicationFiled: October 7, 2005Publication date: January 26, 2006Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN ABInventors: Tim Kingston, Mats Akerblom
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Patent number: D518071Type: GrantFiled: February 7, 2005Date of Patent: March 28, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventors: Jung Gun Gwak, Hak Shin Kim
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Patent number: D523875Type: GrantFiled: June 22, 2005Date of Patent: June 27, 2006Assignee: Volvo Construction Equipment Holding Sweden ABInventor: Hak Shin Kim