US2023021987A1PendingUtilityA1

Dynamically transitioning between a first lifting mode and a second lifting mode

Assignee: CATERPILLAR INCPriority: Jul 21, 2021Filed: Jul 21, 2021Published: Jan 26, 2023
Est. expiryJul 21, 2041(~15 yrs left)· nominal 20-yr term from priority
Inventors:Jason D. Bell
E02F 9/2228E02F 9/2235E02F 9/2246E02F 9/2058E02F 9/265
49
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Claims

Abstract

A controller may receive a first input indicating that a machine is performing a lifting operation. The controller may determine that the machine is operating in a first lifting mode associated with a first lifting capacity during the lifting operation. In the first lifting mode, a pressure of a hydraulic pump of the machine is between a first value and a second value that exceeds the first value. The controller may receive sensor data indicating a current value for the pressure, during the lifting operation. The controller may determine that the current value is approaching the second value. The controller may receive a second input indicating that the machine is continuing to perform the lifting operation. The controller may cause, based on the second input, the machine to transition from operating in the first lifting mode to operating in a second lifting mode associated with a second lifting capacity.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method performed by a controller of a machine, the method comprising:
 receiving a first input indicating that the machine is performing a lifting operation;   determining that the machine is operating in a first lifting mode associated with a first lifting capacity during the lifting operation,
 wherein, in the first lifting mode, a pressure of a hydraulic pump of the machine is between a first value and a second value that exceeds the first value; 
   receiving, from a sensor device, sensor data indicating a current value for the pressure of the hydraulic pump, during the lifting operation;   determining that the current value is approaching the second value;   receiving a second input indicating that the machine is continuing to perform the lifting operation, after determining that the current value is approaching the second value; and   causing, based on the second input, the machine to transition from operating in the first lifting mode to operating in a second lifting mode associated with a second lifting capacity,
 wherein the second lifting capacity exceeds the first lifting capacity. 
   
     
     
         2 . The method of  claim 1 , wherein causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode comprises:
 causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode to enable the current value of the pressure to be increased to a value that exceeds the second value;   wherein, in the second lifting mode, the pressure of the hydraulic pump of the machine is between a third value and a fourth value that exceeds the third value; and   wherein the third value exceeds the second value.   
     
     
         3 . The method of  claim 1 , wherein causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode comprises:
 causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode prior to the pressure reaching the second value.   
     
     
         4 . The method of  claim 1 , wherein causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode comprises:
 determining that additional lifting capacity is to be provided for the lifting operation based on the second input indicating that the machine is continuing to perform the lifting operation, after determining that the pressure of the current value is approaching the second value; and   causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode based on determining that the additional lifting capacity is to be provided for the lifting operation.   
     
     
         5 . The method of  claim 1 , wherein causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode comprises:
 determining that the current value satisfies a threshold value,
 wherein the threshold value is between the first value and the second value; and 
   causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode based on determining that the current value satisfies the threshold value.   
     
     
         6 . The method of  claim 1 , wherein, in the first lifting mode, a velocity of a hydraulic cylinder associated with performing the lifting operation, is a first velocity; and
 wherein causing the machine to transition from operating in the first lifting mode to operating in the second lifting mode comprises:
 causing the velocity of the hydraulic cylinder to be decreased from the first velocity to a second velocity associated with the second lifting mode. 
   
     
     
         7 . The method of  claim 1 , wherein receiving the first input comprises:
 receiving the first input from one or more operator controls of the machine; and
 wherein receiving the second input comprises:
 receiving the second input from the one or more operator controls of the machine. 
 
   
     
     
         8 . A system comprising:
 a sensor device of a machine;   a controller, of the machine, connected to the sensor device and configured to:
 receive an input indicating that the machine is to perform a lifting operation; 
 cause the machine to operate in a first lifting mode associated with a first lifting capacity based on receiving the input,
 wherein, in the first lifting mode, a pressure of a hydraulic pump of the machine is between a first value and a second value that exceeds the first value; 
 receive, from the sensor device, sensor data indicating a current value for the pressure of the hydraulic pump during the lifting operation; 
 determine that the current value satisfies a threshold value between the first value and the second value; 
 determine that the machine is continuing to perform the lifting operation, after determining that the current value satisfies the threshold value; and 
 cause the machine to transition from operating in the first lifting mode to operating in a second lifting mode associated with a second lifting capacity, prior to the current value reaching the second value and based on determining that the machine is continuing to perform the lifting operation,
 wherein the second lifting capacity exceeds the first lifting capacity. 
 
 
   
     
     
         9 . The system of  claim 8 ,
 wherein, to cause the machine to transition from operating in the first lifting mode to operating in the second lifting mode, the controller is configured to:
 decrease a pump flow, associated with the hydraulic pump, as the pressure of the hydraulic pump increases, after determining that the machine is continuing to perform the lifting operation. 
   
     
     
         10 . The system of  claim 8 , wherein the input indicating that the machine is to perform the lifting operation is a first input; and
 wherein the controller is configured to:
 receive a second input indicating that the lifting operation is completed; 
 receive a third input indicating that the machine is stationary; and 
 cause the machine to transition from operating in the second lifting mode to operating in the first lifting mode based on at least one of the second input or the third input. 
   
     
     
         11 . The system of  claim 8 , wherein, to cause the machine to transition from operating in the first lifting mode to operating in the second lifting mode, the controller is configured to:
 determine that additional lifting capacity is to be enabled for the lifting operation based on determining that the machine is continuing to perform the lifting operation, after determining that the current value satisfies the threshold value; and   cause the machine to transition from operating in the first lifting mode to operating in the second lifting mode based on determining that additional lifting capacity is to be enabled for the lifting operation.   
     
     
         12 . The system of  claim 8 , wherein the controller is further configured to:
 provide a notification indicating that the machine has transitioned from operating in the first lifting mode to operating in the second lifting mode.   
     
     
         13 . The system of  claim 8 , wherein the lifting operation is performed using at least one component of a lifting mechanism of the machine. 
     
     
         14 . The system of  claim 8 , wherein, in the second lifting mode, the pressure of the hydraulic pump of the machine is between a third value and a fourth value that exceeds the third value, and
 wherein the third value exceeds the second value.   
     
     
         15 . A machine, comprising:
 a hydraulic pump;   a sensor device; and   a controller configured to:
 receive, from the sensor device, sensor data indicating a current value for a pressure of the hydraulic pump during a lifting operation,
 wherein the machine is operating in a first lifting mode during the lifting operation, and 
 wherein, in the first lifting mode, the pressure of the hydraulic pump is between a first value and a second value that exceeds the first value; 
 
 determine that the current value satisfies a threshold value between the first value and the second value; 
 determine that the machine is continuing to perform the lifting operation, after determining that the current value satisfies the threshold value; 
 determine that additional lift capacity is to be enabled for the lifting operation based on determining that the machine is continuing to perform the lifting operation, after determining that the current value satisfies the threshold value; and 
 cause the machine to transition from operating in the first lifting mode to operating in a second lifting mode associated with a second lifting capacity, based on determining that additional lift capacity is to be enabled for the lifting operation,
 wherein the second lifting capacity exceeds the first lifting capacity. 
 
   
     
     
         16 . The machine of  claim 15 , wherein the controller is further configured to:
 receive a first input indicating that the lifting operation is completed;   receive a second input indicating that the machine is stationary; and   cause the machine to transition from operating in the second lifting mode to operating in the first lifting mode based on the first input and the second input.   
     
     
         17 . The machine of  claim 15 , wherein the machine performs the lifting operation using at least one component of a lifting mechanism of the machine. 
     
     
         18 . The machine of  claim 17 , wherein the sensor data is a first sensor device;
 wherein the controller is further configured to:
 determine that the machine is performing the lifting operation based on at least one of:
 sensor data, from a second sensor device, identifying a pressure associated with a movement of a first component of the lifting mechanism, 
 sensor data, from a third sensor device, identifying a pressure associated with a movement of a second component of the lifting mechanism, or 
 sensor data, from a third sensor device, identifying a pressure associated with a movement of a third component of the lifting mechanism. 
 
   
     
     
         19 . The machine of  claim 15 , wherein, to cause the machine to transition from operating in the first lifting mode to operating in a second lifting mode, the controller is configured to:
 cause the machine to transition from operating in the first lifting mode to operating in a second lifting mode to enable the pressure to be increased to a value that exceeds the second value;   wherein, in the second lifting mode, the pressure of the hydraulic pump of the machine is between a third value and a fourth value that exceeds the third value; and   wherein the third value exceeds the second value.   
     
     
         20 . The machine of  claim 15 ,
 wherein, to cause the machine to transition from operating in the first lifting mode to operating in the second lifting mode, the controller is configured to:
 decrease a pump flow, associated with the hydraulic pump, as the pressure of the hydraulic pump increases, after determining that the machine is continuing to perform the lifting operation.

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