To provide a fall prevention device capable of dispensing with a power supply, and achieving miniaturization and weight reduction as well as low-cost introduction and excellent operability of reliable and stable operation, and to provide a lifting carriage excellent in safety capable of surely preventing the fall by having the fall prevention device when ascending and descending a step such as a staircase.SOLUTION: A fall prevention device 10 mounted on a lifting carriage ascending and descending a step by a pair of left and right crawlers includes: a frame body 18 installed between the left and right crawlers; an oscillation supporting part 19 provided inside the frame body 18; an engaging claw 20 having a proximal end side in a longitudinal direction journaled to the oscillation supporting part 19 and capable of oscillating in a vertical direction; and a lock mechanism 22 mounted on the frame body 18, fixing the engaging claw 20 at a standby position so that a tip side of the engaging claw 20 does not protrude downward more than a ground surface 21 of the crawler in a normal state, and oscillating the engaging claw 20 up to such an operating position that the tip side of the engaging claw 20 protrudes more downward than the ground surface 21 of the crawler by an operation of a worker in an emergency case.SELECTED DRAWING: Figure 4

    【課題】電源が不要で小型化及び軽量化を図ることができ、低コストで導入することが可能で、確実かつ安定的に動作する操作性に優れた落下防止装置、及びその落下防止装置を備えることにより、階段等の段差を昇降する際に、落下を確実に防止することができる安全性に優れた昇降台車を提供する。【解決手段】左右一対のクローラにより段差を昇降する昇降台車に取付けられる落下防止装置10が、左右のクローラの間に設置される枠体18と、枠体18の内側に設けられた揺動支持部19と、長手方向の基側が揺動支持部19に軸支され上下方向に揺動可能な係止爪20と、枠体18に取付けられ、通常状態で、クローラの接地面21より下方に係止爪20の先側が突出しないように係止爪20を待機位置に固定し、非常時に、作業者の操作により係止爪20を、係止爪20の先側がクローラの接地面21より下方に突出する作動位置まで揺動させるロック機構22とを備える。【選択図】図4


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    Title :

    FALL PREVENTION DEVICE AND LIFTING CARRIAGE


    Additional title:

    落下防止装置及び昇降台車


    Contributors:

    Publication date :

    2023-08-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS



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