| 摘要 |
PROBLEM TO BE SOLVED: To provide a boom device used in a work vehicle such as a wheel ensuring a large excavating force, piling up to a high position, scraping up, and charging into a hopper easily. SOLUTION: This boom device consists of a reach guide 2, a reach cylinder 3, an arm 4, a tension bar 5, a boom 6, a boom cylinder 7, a working device 8, a bell crank 9, a push rod 10, and a working device cylinder 11. In particular, the reach guide 2, the reach cylinder 3, the arm 4, and a push rod 5 are additionally provided in a reverse Z link type boom device consisting of the boom 6, the boom cylinder 7, the working device 8, the bell crank 9, the push rod 10, and the working device cylinder 11 so that the reverse Z link type boom device can reach a vehicle body.
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