| 摘要 |
he invention relates to an automotive four-wheeled hand truck studied mainly for use in irregular terrains, for transporting agricultural produce. The hand truck in question has four wheels, the internal combustion motor, the drive system transmitting the power to all wheels, the improved front system with a stirring one, the chassis and the loading platform. The advantages of the invention is that it is of low cost, weight light, small in size and manoeuvrable. It operates smoothly and is easily employed and controlled due to the properly designed steering system it is provided with. It exhibits great stability as the gravity centre of the load placed on the loading platform is in proximity to the gravity centre of same platform. The mode of transmitting power to the wheels prevents the hand truck from being "nailed" on the soil. The two drive wheels are liable to further accommodate the use of said hand truck. Characterized by its four drive wheels (used by selection), said hand truck is manoeuvrable and able to move on any kind of terrains. The advantage of the invention is that the front drive wheels rotate via two stub-axles. |
