建設機械

Japanese Patent JP7160646

B2

To provide a construction machine capable of reducing the time and labor of an operator and reliably preventing deterioration of cooling efficiency of a heat exchanger unit. A construction machine includes a heat exchanger unit having a plurality of heat exchangers, a cooling fan configured to supply cooling air to the heat exchanger unit during a forward rotation thereof, a controller configured to control an operation of the cooling fan, a timer configured to count an operation time period of forward rotation of the cooling fan, and a reverse rotation signal output switch configured to output to the controller a reverse rotation signal for causing the cooling fan to rotate in the reverse direction in response to an applied manual operation. The controller causes the cooling fan to rotate in the reverse direction for a second predetermined time period and resets the timer at the time of finishing the reverse rotation of the cooling fan, if the operation time period of forward rotation counted by the timer reaches a first predetermined time period, and controller causes the cooling fan to rotate in the reverse direction for the second predetermined time period when the reverse rotation signal is output from the reverse rotation signal output switch, and resets the timer at the time of finishing the reverse rotation of the cooling fan, even if the operation time period of forward rotation counted by the timer has not reached the first predetermined time period.

Keigo Hara
Hiroshi Yokoyama
Takaaki Imaya
Mitsuhiro Toyoda
Akira Hiraoka
Hiroyuki Shimizu

JP2018218899A

October 25, 2022

November 22, 2018

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Caterpillar S.A.R.L.

E02F9/00; B60H1/00; B60H3/06; B60K11/04

JP2007182710A
JP11091366A
JP2014167286A
JP2001329568A

US20050017901

Naozumi Ono
Okunuki Sachiko
Tsuyoshi Tsukano
Yoshifumi Kaneko

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