US 12,221,774 B2
Operation record analysis system for construction machine
Yoshibumi Fukuda, Tokyo (JP); Takuya Naka, Tokyo (JP); Masatsugu Arai, Tsuchiura (JP); and Koutarou Masuda, Tsuchiura (JP)
Assigned to HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
Appl. No. 17/760,887
Filed by HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
PCT Filed Sep. 1, 2020, PCT No. PCT/JP2020/033071
§ 371(c)(1), (2) Date Mar. 16, 2022,
PCT Pub. No. WO2021/059892, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-174920 (JP), filed on Sep. 26, 2019.
Prior Publication US 2022/0349154 A1, Nov. 3, 2022
Int. Cl. E02F 9/26 (2006.01)
CPC E02F 9/261 (2013.01) [E02F 9/264 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An operation record analysis system for a construction machine comprising:
a machine body including a front work implement having at least an arm and a bucket;
a machine body position sensor that senses a position of the machine body;
a machine body posture sensor that senses a posture of the machine body;
an operation state sensor that senses an operation state of the machine body; and
a controller configured to calculate a work position of the machine body on a basis of information from the machine body position sensor and the machine body posture sensor, estimate a type of work of the machine body on a basis of the work position and the operation state, and calculate operation information including the work position and the type of work,
wherein the operation record analysis system further comprises:
a recording device that records the operation information;
a display device that displays the operation information; and
an object sensor that senses an object existing around the machine body, and
wherein the controller is configured to:
calculate a position of the object on a basis of information from the object sensor,
decide, on a basis of the information from the machine body position sensor and the machine body posture sensor and the position of the object, whether the machine body and the object are close to each other,
add a result of the decision to the operation information at this point of time, and
record the operation information, to which the result of the decision is added, to the recording device to allow the operation information, to which the result of the decision is added, to be displayed on the display device.