A front wheel is not provided with spokes, a rim is fixedly connected with an outer crank, the left side and the right side of a support are respectively provided with a resisting arm crank, each resisting arm crank is provided with a crutch-shaped supporting rod, and the tail end of each crutch-shaped supporting rod is provided with a pedaling wheel. When the support is pulled by external force to drive the front wheel to move forwards, the rim can drive the outer crank to rotate, and the outer crank simultaneously drives the left resistance arm crank and the right resistance arm crank to move backwards and downwards in sequence, drives the left crutch-shaped supporting rod and the right crutch-shaped supporting rod to move backwards and downwards in sequence and drives the left pedaling wheel and the right pedaling wheel to pedal the ground backwards and downwards in sequence to enable the plate trailer to move forwards. The device can be conveniently applied to various traction vehicles such as manpower, animal power and maneuver without treading the pedal and pressing the operating rod by hand to drive the lever. The invention has the advantages of firm structure, convenience and labor saving.
一种省力杠杆板车,前轮无辐条,轮圈与外曲柄固定连接,支架左右两边各设有一个阻力臂曲柄,每个阻力臂曲柄设有一个拐形撑杆,拐形撑杆末端设有蹬地轮。当外力牵引支架带动前轮向前运动时,轮圈会带动外曲柄转动,外曲柄再同时带动左右阻力臂曲柄依次向后下方运动,再带动左右拐形撑杆依次向后下方运动,再带动左右蹬地轮依次向后下方蹬地使板车前行。本发明不须脚踩踏板和手压操作杆驱动杠杆,方便应用于人力、畜力、机动各类牵引车辆。本发明的优点:结构结实,方便,省力。
Labor-saving lever plate trailer
省力杠杆板车
2024-01-30
Patent
Electronic Resource
Chinese
IPC: | B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS |
Stepping type weight-driven chainless lever labor-saving power device
European Patent Office | 2020
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