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US 12,583,281 B2Granted
Working machine
AssigneeKubota Corporation
InventorsTakahiro Takaki, Go Takaki, Kazuto Okazaki
Life of this patent
Estimating the term…
Abstract
A working machine includes a machine body, a protection mechanism to protect an operator's seat on the machine body, a heater to heat an inside of the protection mechanism, a radiator device to cool an object to be cooled, the radiator device including a heat exchanger to perform heat exchange between the object and ambient air, and a first flow passage to guide air heated by the heat exchanger to the heater and to guide the air further heated by the heater to the inside of the protection mechanism.
Claims18
A working machine comprising:
- a machine body;
- a protection mechanism to protect an operator's seat on the machine body;
- a heater to heat an inside of the protection mechanism;
- a radiator device to cool an object to be cooled, the radiator device including a heat exchanger to perform heat exchange between the object and ambient air;
- and
- a first flow passage to guide air heated by the heat exchanger to the heater and to guide the air further heated by the heater to the inside of the protection mechanism.
3 more elements
A working machine comprising:
- a machine body;
- a protection mechanism to protect an operator's seat on the machine body;
- a storage battery provided in or on the machine body;
- an electric motor to be driven by electric power from the storage battery;
- a hydraulic pump to be driven by power from the electric motor;
- a working device to be driven by a hydraulic pressure of hydraulic fluid supplied from the hydraulic pump;
- a thermal fluid heater to heat an inside of the protection mechanism by heat from the hydraulic fluid;
- an electric heater to be driven by electric power from the storage battery to heat the inside of the protection mechanism;
- a fluid temperature detector to detect a temperature of the hydraulic fluid;
- and
- a controller to control operation of the thermal fluid heater and operation of the electric heater based on a result detected by the fluid temperature detector, wherein
- the controller is configured or programmed to:
- cause the electric heater to perform heating and cause the thermal fluid heater to not perform heating or perform heating when the temperature of the hydraulic fluid is lower than a first threshold;
- and
- cause the electric heater to not perform heating and cause the thermal fluid heater to perform heating when the temperature of the hydraulic fluid is higher than or equal to the first threshold.
12 more elements
A working machine comprising:
- a machine body;
- a protection mechanism to protect an operator's seat on the machine body;
- a storage battery provided in or on the machine body;
- an electric motor to be driven by electric power from the storage battery;
- a hydraulic pump to be driven by power from the electric motor;
- a working device to be driven by a hydraulic pressure of hydraulic fluid supplied from the hydraulic pump;
- a thermal fluid heater to heat an inside of the protection mechanism by heat from the hydraulic fluid;
- an electric heater to be driven by electric power from the storage battery to heat the inside of the protection mechanism;
- a hydraulic fluid tank to store the hydraulic fluid;
- a control valve to control a flow rate of the hydraulic fluid from the hydraulic pump to a hydraulic actuator of the working device;
- a first fluid passage to allow the hydraulic fluid sucked from the hydraulic fluid tank and then delivered by the hydraulic pump to flow toward the control valve;
- a second fluid passage to allow the hydraulic fluid having been discharged from the hydraulic actuator and passed through the control valve to flow toward the hydraulic fluid tank;
- and
- a third fluid passage branching from one of the first fluid passage and the second fluid passage, extending through the inside of the protection mechanism, and merging with the one of the first fluid passage and the second fluid passage, wherein
- the thermal fluid heater includes
- a heat exchanger to perform heat exchange between the hydraulic fluid flowing in the third fluid passage and ambient air, and
- a first fan to blow air around the heat exchanger toward the inside of the protection mechanism.
14 more elements
Dependencies are inferred from the claim text.