Cooling device for forklift brake system
AssigneeDoosan Corporation
InventorDong Ho Han
Life of this patent
Estimating the term…
Abstract
The present invention is related to a cooling device for a forklift brake system, which is capable of maintaining a predetermined level of heat-radiation performance by reducing heat when heat is generated in a service brake that is provided at a forklift driving shaft. A cooling device for a forklift brake system according to an exemplary embodiment of the present invention allows cooling oil to bypass a cooler when a pressure of the cooling oil is abnormally increased or there is a concern that a pressure of the cooling oil is increased, thereby preventing the cooler from being damaged.
Claims8
A cooling device for a forklift brake system, the cooling device comprising:
- an oil tank in which cooling oil is stored;
- a hydraulic pump which sucks and discharges the cooling oil;
- a cooler which cools the discharged cooling oil;
- a service brake which is cooled by the cooled cooling oil and allows the used cooling oil to be returned to the oil tank;
- a first bypass line which connects a front end of the service brake and a rear end of the service brake;
- a check valve which is installed on the first bypass line, and is opened when an abnormal pressure is generated at the front end of the service brake and allows the cooled cooling oil to bypass the service brake;
- a third bypass line which connects a front end of the cooler and a rear end of the cooler;
- a thermostat valve which is installed on the third bypass line, and is maintained in a closed state when a temperature of the cooling oil discharged from the hydraulic pump is higher than a setting temperature and is opened when the temperature of the cooling oil discharged from the hydraulic pump is lower than the setting temperature to allow the cooling oil to bypass the cooler;
- a temperature sensor which detects a temperature of the cooling oil at a front end of the thermostat valve;
- and
- a controller which is configured to receive the temperature value of the cooling oil detected by the temperature sensor, and control a dashboard to display an abnormal temperature when the received temperature value deviates from an allowable temperature range.
A cooling device for a forklift brake system, the cooling device comprising:
- an oil tank in which cooling oil is stored;
- a hydraulic pump which sucks and discharges the cooling oil;
- a cooler which cools the discharged cooling oil;
- a service brake which is cooled by the cooled cooling oil and allows the used cooling oil to be returned to the oil tank;
- a first bypass line which connects a front end of the service brake and a rear end of the service brake;
- a check valve which is installed on the first bypass line, and is opened when an abnormal pressure is generated at the front end of the service brake and allows the cooled cooling oil to bypass the service brake;
- a third bypass line which connects a front end of the cooler and a rear end of the cooler;
- a hydraulic valve which is installed on the third bypass line and is opened and closed;
- a temperature sensor which detects a temperature of the cooling oil at a front end of the hydraulic valve;
- and
- a controller which is configured to receive the temperature value of the cooling oil detected by the temperature sensor, and to control the hydraulic valve to be maintained in a closed state when the temperature value is higher than a setting temperature and controls the hydraulic valve to be opened when the temperature value is lower than the setting temperature.
Dependencies are inferred from the claim text.