Abstract: A quick joint of a front loader, the quick joint includes: a coupling member (30) having a hook shape and pivotally connected to a first pivot point (P1) of a boom post (20) through a first pivot shaft (31); a spring member (32) for applying an elastic force in a direction of releasing the coupling member (30) from a coupling target shaft (14) disposed on a boom post support (10) which is attached to a tractor (1); a lock unit (34) having a part making contact with the coupling member (30), and provided with a lock pin (36) for restraining behavior of the coupling member (30) at a coupling position (A1); and a guide slot (38) having an arc shape and formed in the boom post (20) to define a moving path of the lock pin (36) when the lock unit (34) rotates.

Abstract: A load-sensitive automatic transmission system for an agricultural electric vehicle is provided, which includes a drive motor for generating a rotational power using electric power of a battery; a transmission for changing a rotational speed of the drive motor in multiple stages and outputting the changed rotational speed; a forward/reverse differential gear for transmitting the power of the transmission to wheels; a control unit for detecting a running state of the vehicle and a load state of the drive motor and determining a speed change time; and an actuator for operating the transmission in response to a signal from the control unit. Accordingly, it is possible to selectively provide high speed and torque to meet the needs of different situation, beyond the limitations of the motor drive performance of a conventional electric vehicle.

Abstract: A fixing structure of an auxiliary braking device for a utility vehicle is provided, which includes a brake disc mounted on a driving shaft at which an output of a transmission is received; a brake pad mounted at a vehicle body in such a manner as to compress the brake disc by the cooperative operation with the manipulation of a brake lever mounted at a driver seat and to perform a braking operation; and a spline coupling part mounted at one end of the driving shaft in such a manner as to be fixedly coupled to a rear axle input shaft of a rear wheel differential gear so as to have the restriction in the axial movement thereof.

Abstract: A utility vehicle equipped with a parking brake is provided, which includes a parking brake warning sound generator immediately operated when the vehicle is driven while the parking brake is engaged. A parking brake warning sound generator is provided, which includes a parking brake detector detecting whether a parking brake is engaged; a drive detector detecting whether the vehicle is driven; a controller for receiving a signal from the parking brake detector and a signal from the drive detector to determine whether the vehicle is driven while the parking brake is being engaged; and a warning sound generator receiving the determination result from the controller to emit a warning sound for warning the driver that the vehicle is driven while the parking brake is being engaged. The parking brake warning sound generator emits a warning sound when a vehicle drive signal is detected while the parking brake is engaged.

Abstract: A load-sensitive automatic transmission system for an agricultural electric vehicle is provided, which includes a drive motor for generating a rotational power using electric power of a battery; a transmission for changing a rotational speed of the drive motor in multiple stages and outputting the changed rotational speed; a forward/reverse differential gear for transmitting the power of the transmission to wheels; a control unit for detecting a running state of the vehicle and a load state of the drive motor and determining a speed change time; and an actuator for operating the transmission in response to a signal from the control unit. Accordingly, it is possible to selectively provide high speed and torque to meet the needs of different situation, beyond the limitations of the motor drive performance of a conventional electric vehicle.