-
公开(公告)号：US20240410134A1
公开(公告)日：2024-12-12
申请号：US18207741
申请日：2023-06-09
Applicant: CATERPILLAR INC.
Inventor： Christopher Michael Ruemelin , Adam Martin Nackers , Santosh Ram Ancha , Rustin Glenn Metzger , Steven Donald Spencer
IPC: E02F9/12
Abstract: A mechanical swing brake variable control system for an earth-moving machine including an upper revolving car body with swing components mounted on the upper revolving car body, a lower traveling car body with traction components mounted on the lower traveling car body, and a mechanical service brake interconnected with the upper and lower car bodies, controls relative rotation between the upper and lower car bodies. A pressure control device controls a variable pressure applied to the mechanical service brake to vary an amount of swing drive holding torque. An electronic controller monitors and processes signals received from sensors associated with the swing components and machine operator commands, and variably controls the amount of holding torque exerted on the upper revolving car body using the mechanical service brake as a function of one or more of machine roll angle, operational configuration of the swing components, inertial mass of the swing components, and machine operator commands.
-
公开(公告)号：US11198987B2
公开(公告)日：2021-12-14
申请号：US16858367
申请日：2020-04-24
Applicant: Caterpillar Inc.
Inventor： Rustin Glenn Metzger , Adam Martin Nackers , Joshua Aaron Fossum , Christopher M. Ruemelin , Corey Lee Gorman
Abstract: A hydraulic circuit is disclosed. The hydraulic circuit may include a hydrostatic pump to provide, at a flow rate, a fluid to a hydraulic motor, wherein the hydrostatic pump has a displacement, and wherein the hydraulic motor drives a swinging element; a swing circuit pressure sensor to sense a circuit pressure of the hydraulic circuit; a pilot pressure actuator to control, based on a supply pressure, the displacement of the hydrostatic pump; a pilot pressure override valve to control the supply pressure; and a controller configured to adjust, based on sensed signals and with the pilot pressure override valve, the supply pressure, wherein the sensed signals include: a circuit pressure signal based on the circuit pressure sensed by the swing circuit pressure sensor; and a sensed swing speed signal based on a swing speed of the swinging element sensed by one or more machine sensors.
-
公开(公告)号：US11585071B2
公开(公告)日：2023-02-21
申请号：US16860585
申请日：2020-04-28
Applicant: CATERPILLAR INC.
Inventor： Rustin Glenn Metzger , Adam Martin Nackers , Joshua Aaron Fossum , Christopher M. Ruemelin , Corey Lee Gorman
Abstract: A swing motion control system for an earth-moving machine may include a closed loop hydraulic circuit including a hydrostatic swing pump fluidly coupled to at least one hydraulic swing motor configured to control a swing mechanism of the earth-moving machine, a pressure control device configured to control the pressure of fluid supplied to the hydrostatic swing pump for control of the pressure output by the pump, and a controller. The controller may be configured to monitor and process signals received from sensors and operator input, wherein the signals received from the sensors are indicative of machine position and pose, and inertia mass of swing components and a payload being moved by the swing mechanism of the machine, and control at least one of an offset amount for desired pump displacement by the hydrostatic swing pump or an offset amount for pump output pressure from the hydrostatic swing pump based on at least one of an amount of slope on which the machine is operating or the inertia mass of the swing components and payload.
-
公开(公告)号：US11041285B2
公开(公告)日：2021-06-22
申请号：US16682425
申请日：2019-11-13
Applicant: Caterpillar Inc.
Inventor： Terril James Johnson , David Eugene Cooper , Anthony Dean McNealy , Matthew Bunge , Andrew Sumners , Rustin Glenn Metzger , Corey Lee Gorman , Brad Robert Van De Veer
Abstract: An excavator machine includes an undercarriage assembly including a drive assembly, and a carriage assembly rotatably coupled to the undercarriage assembly and including an operator cab positioned at a front of the carriage assembly. The excavator machine also includes a boom assembly. The boom assembly is coupled to the carriage assembly via two branches, and the branches are coupled to the carriage assembly on opposing sides of the operator cab.
-
公开(公告)号：US11608610B2
公开(公告)日：2023-03-21
申请号：US17444405
申请日：2021-08-04
Applicant: Caterpillar Inc.
Inventor： Adam Martin Nackers , Rustin Glenn Metzger , Chris Rustu Cesur , Steven D Spencer
Abstract: A hydraulic system may include a first actuator to control a first linkage member, a second actuator to control a second linkage member, a first primary hydraulic circuit and a first secondary hydraulic circuit that include the first actuator, a second primary hydraulic circuit and a second secondary hydraulic circuit that include the second actuator, a first pump to cause fluid to flow through the first primary hydraulic circuit and the second secondary hydraulic circuit, a second pump to cause fluid to flow through the second primary hydraulic circuit and the first secondary hydraulic circuit, and a controller. The controller may be configured to determine that an operator assistance mode is enabled, and cause closing of a first valve that controls fluid flow through the first secondary hydraulic circuit and a second valve that controls fluid flow through the second secondary hydraulic circuit.
-
Patent Agency Ranking
公开(公告)号：US11473271B2
公开(公告)日：2022-10-18
申请号：US17301867
申请日：2021-04-16
Applicant: Caterpillar Inc.
Inventor： Rustin Glenn Metzger , Corey Lee Gorman , Adam Martin Nackers
Abstract: A hydraulic system controller is disclosed. The hydraulic system controller may determine a maximum active circuit pressure of a set of active hydraulic circuits of the hydraulic system, wherein the hydraulic system includes a hydraulic pump to cause fluid to flow throughout the set of active hydraulic circuits; determine a circuit pressure of a hydraulic circuit of the hydraulic system; determine, based on a hydraulic flow command for the hydraulic circuit and the circuit pressure, a desired circuit delta-pressure for the hydraulic circuit; determine, based on the desired circuit delta-pressure and a pressure difference between the maximum active circuit pressure and the circuit pressure, a circuit valve setting for a circuit valve of the hydraulic circuit; and cause a control device to set a position of the circuit valve according to the circuit valve setting.
-
公开(公告)号：US11001989B1
公开(公告)日：2021-05-11
申请号：US16834810
申请日：2020-03-30
Applicant: Caterpillar Inc.
Inventor： Rustin Glenn Metzger , Corey Lee Gorman , Adam Martin Nackers
Abstract: A hydraulic system controller is disclosed. The hydraulic system controller may determine a maximum active circuit pressure of a set of active hydraulic circuits of the hydraulic system, wherein the hydraulic system includes a hydraulic pump to cause fluid to flow throughout the set of active hydraulic circuits; determine a circuit pressure of a hydraulic circuit of the hydraulic system; determine, based on a hydraulic flow command for the hydraulic circuit and the circuit pressure, a desired circuit delta-pressure for the hydraulic circuit; determine, based on the desired circuit delta-pressure and a pressure difference between the maximum active circuit pressure and the circuit pressure, a circuit valve setting for a circuit valve of the hydraulic circuit; and cause a control device to set a position of the circuit valve according to the circuit valve setting.
-
公开(公告)号：US10508409B2
公开(公告)日：2019-12-17
申请号：US15956324
申请日：2018-04-18
Applicant: Caterpillar Inc.
Inventor： Terril James Johnson , David Eugene Cooper , Anthony Dean McNealy , Matthew Bunge , Andrew Sumners , Rustin Glenn Metzger , Corey Lee Gorman , Brad Robert Van De Veer
Abstract: An excavator machine includes an undercarriage assembly including a drive assembly, and a carriage assembly rotatably coupled to the undercarriage assembly and including an operator cab positioned at a front of the carriage assembly. The excavator machine also includes a boom assembly. The boom assembly is coupled to the carriage assembly via two branches, and the branches are coupled to the carriage assembly on opposing sides of the operator cab.
-
公开(公告)号：US10480159B2
公开(公告)日：2019-11-19
申请号：US15613987
申请日：2017-06-05
Applicant: Caterpillar Inc.
Inventor： Anthony Dean McNealy , Corey Lee Gorman , Shogo Tada , Rustin Glenn Metzger , Hideki Nakajima , Justin Douglas Speichinger , Shinya Ohmura
Abstract: A kinetic energy recovery system (KERS) for a machine having a swing motor and/or an actuator includes a hydraulic motor/pump that can output pressurized fluid for operating at least one of: the swing motor and the actuator. A first shaft of the hydraulic motor/pump can be rotated by fluid returning from at least one of: the swing motor and the actuator back to the hydraulic motor/pump. Further, the KERS also includes a flywheel that can selectively couple with the first shaft with the help of a first clutch. The flywheel stores drive power generated by the hydraulic motor/pump from the return flow of fluid when the first clutch couples the flywheel with the first shaft of the hydraulic motor/pump. A gearing arrangement is coupled to the flywheel and can selectively engage with a second shaft associated with a prime mover of the machine with the help of a second clutch.
-
公开(公告)号：US10459462B2
公开(公告)日：2019-10-29
申请号：US15629172
申请日：2017-06-21
Applicant: CATERPILLAR INC.
Abstract: A method of using sensor feedback for controlling fluid pressures in a machine includes receiving signals from each of a plurality of Inertial Measurement Units (IMU's) mounted on different components of the machine, receiving a signal from at least one non-IMU sensor, fusing the signals received from the IMU's with each other and with a signal from the at least one non-IMU sensor, determining best estimates of current output joint angles for each of the plurality of components of the machine with reference to a machine reference frame, solving a kinematic equation using the best estimates of current output joint angles for the components of the machine and structural design information characterizing the machine, and applying a determination from the solution of the kinematic equation in an implementation of a controlled adjustment to a fluid pressure supplied to a fluid actuation cylinder.
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.013 seconds)
