Drive transmission device, construction machine, drive transmission method, and storage medium storing program
A drive transmission device in one embodiment of the disclosure includes a pair of output shafts, a differential, a clutch (power transmission unit), and a control unit. The pair of output shafts connected to a pair of speed reducers that are disposed to face each other. The differential receives a driving force from a drive source and outputs the driving force to the pair of output shafts; The clutch acts on the differential and takes a first state in which a load imbalance between the pair of output shafts is adjusted or a second state in which the pair of output shafts are rotated directly by the driving force. The control unit switches the state of the clutch based on difference information regarding a difference in rotation between the pair of speed reducers.
1. A drive transmission device comprising:
a pair of output shafts connected to a pair of speed reducers respectively, the pair of speed reducers facing each other;
a differential receiving a driving force from a drive source and outputting the driving force to the pair of output shafts;
a power transmission unit acting on the differential, the power transmission unit taking either one of a first state in which a load imbalance between the pair of output shafts is adjusted or a second state in which the pair of output shafts are rotated directly by the driving force; and
a control unit switching the power transmission unit to the first state or the second state based on difference information regarding a difference in rotation between the pair of speed reducers, the difference information being information indicating a current value of the drive source,
wherein the control unit maintains the power transmission unit in the first state until the current value of the drive source which is a value indicated by the difference information reaches a first threshold value, and switches the power transmission unit to the second state when the value reaches the first threshold value.
2. The drive transmission device of claim 1 , wherein the control unit switches the power transmission unit to the first state when the value indicated by the difference information reaches a second threshold value higher than the first threshold value, and thereafter switches the power transmission unit to the second state.
3. A construction machine comprising:
a vehicle body;
a movable member rotatably supported by the vehicle body;
a drive transmission device for driving the movable member;
a drive source generating a driving force;
a pair of speed reducers disposed to face each other,
wherein the drive transmission device includes:
a pair of output shafts connected to the pair of speed reducers, respectively;
a differential receiving a driving force from the drive source and outputting the driving force to the pair of output shafts;
a power transmission unit acting on the differential, the power transmission unit taking either one of a first state in which a load imbalance between the pair of output shafts is adjusted or a second state in which the pair of output shafts are rotated directly by the driving force; and
a control unit switching the power transmission unit to the first state or the second state based on difference information regarding a difference in rotation between the pair of speed reducers, the difference information being information indicating a current value of the drive source,
wherein the control unit maintains the power transmission unit in the first state until the current value of the drive source which is a value indicated by the difference information reaches a first threshold value, and switches the power transmission unit to the second state when the value reaches the first threshold value.
4. A drive transmission method, comprising a step of causing a computer of a drive transmission device to perform a process of switching a power transmission unit to a first state or a second state based on difference information regarding a difference in rotation between a pair of speed reducers, the difference information being information indicating a current value of a drive source, and a step of maintaining the power transmission unit in the first state until the current value of the drive source which is a value indicated by the difference information reaches a first threshold value, and switching the power transmission unit to the second state when the value reaches the first threshold value,
wherein the drive transmission device includes:
a pair of output shafts connected to the pair of speed reducers respectively, the pair of speed reducers facing each other;
a differential receiving a driving force from a drive source and outputting the driving force to the pair of output shafts; and
the power transmission unit acting on the differential, the power transmission unit taking either one of the first state in which a load imbalance between the pair of output shafts is adjusted or the second state in which the pair of output shafts are rotated directly by the driving force.
5. A non-transitory computer-readable storage medium storing a program for causing a computer of a drive transmission device to perform a step of switching a power transmission unit to a first state or a second state based on difference information regarding a difference in rotation between a pair of speed reducers, the difference information being information indicating a current value of a drive source, and a step of maintaining the power transmission unit in the first state until the current value of the drive source which is a value indicated by the difference information reaches a first threshold value, and switching the power transmission unit to the second state when the value reaches the first threshold value,
wherein the drive transmission device includes:
a pair of output shafts connected to the pair of speed reducers respectively, the pair of speed reducers facing each other;
a differential receiving a driving force from a drive source and outputting the driving force to the pair of output shafts; and
the power transmission unit acting on the differential, the power transmission unit taking either one of the first state in which a load imbalance between the pair of output shafts is adjusted or the second state in which the pair of output shafts are rotated directly by the driving force.