Takeuchi Mfg. has been granted a patent for an operation control device for a working vehicle. The device includes a hydraulic actuator, a hydraulic pump, an electric motor, a motor controller, an operating oil supply control valve, an operating device, and a working gain setting device. The device controls the supply of operating oil to the hydraulic actuator based on the operation output signal from the operating device and the working speed gain set by the working gain setting device. The motor controller controls the rotational speed of the electric motor to control the amount of oil sent out from the hydraulic pump. The working gain setting device is manually operated to set a common working speed gain. The operating oil supply control valve controls the supply of operating oil to the hydraulic actuator, while the motor controller controls the rotational speed of the electric motor to supply a greater amount of oil to the operating oil supply control valve. GlobalData’s report on Takeuchi Mfg. gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Takeuchi Mfg., hybrid work machines was a key innovation area identified from patents. Takeuchi Mfg.'s grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Operation control device for hydraulic working device in a vehicle
The granted patent (Publication Number: US11643793B2) describes an operation control device for a working vehicle with a hydraulic working device. The device includes a hydraulic actuator, a hydraulic pump, an electric motor, a motor controller, an operating oil supply control valve, an operating device, and a working gain setting device.
The hydraulic actuator is responsible for driving the hydraulic working device, while the hydraulic pump sends out the necessary operating oil. The electric motor drives the hydraulic pump, and the motor controller controls the motor's driving to regulate the amount of oil sent out by the pump. The operating oil supply control valve controls the amount of operating oil supplied to the hydraulic actuator.
The operating device is manually operated by an operator to make the hydraulic actuator work and outputs an operation output signal corresponding to the manual operation. The working gain setting device allows the operator to set a gain of working speed for the hydraulic actuator. This gain determines the speed at which the hydraulic actuator operates based on the operator's input.
The operating oil supply control valve and the motor controller both use the operation output signal and the working speed gain set by the working gain setting device to control the supply of oil and the rotational speed of the electric motor, respectively. The operating oil supply control valve ensures that a specified amount of oil is supplied to the hydraulic actuator to drive it at the required speed, while the motor controller supplies a greater amount of oil to the operating oil supply control valve.
The patent also mentions that the operating oil supply control valve includes a flow rate control valve for switching the supply and discharge of operating oil to the hydraulic actuator. The opening degree of the flow rate control valve is controlled to regulate the oil supply to the hydraulic actuator. Additionally, the operating oil supply control valve includes a valve working device that controls the operation of the flow rate control valve.
Overall, this patent describes an operation control device for a working vehicle that allows for precise control of the hydraulic actuator's speed and oil supply, enhancing the vehicle's performance and efficiency.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
