The invention relates to the technical field of jacks, in particular to a jack with high safety. According to the jack with the high safety, a clamping block is matched with a straight tooth strip totake effect, a supporting column is moved downward under pressure, through an inclined clamping surface at the upper end of the clamping block, the straight tooth strip is effectively clamped, the downward movement of the supporting column is restricted, the situations that a supported item falls directly and a safety accident is caused are effectively avoided when the jack is moved downward in anunexpected condition, and the personal safety of staff is effectively ensured; an inclined smooth surface is arranged at the lower end of the clamping block, so that the clamping block rotates effectively when the straight tooth strip rises, an ejecting plate is hindered to support articles, and the normal work of the jack is not affected; and by rotating a thread rotary block, the thread rotaryblock can squeeze an L-shaped supporting block to rotate the clamping block, the clamping block can turn out of the straight tooth strip, the normal drop of the jack is ensured, and the operation is simple and quick. The jack with the high safety has simple structure, convenient use and low manufacturing cost, and is effectively suitable for the use of the jack.

    本发明涉及千斤顶技术领域,具体涉及一种安全性高的千斤顶,本发明通过卡块配合直齿条产生作用,使支柱受压力出现向下移动时,通过卡块上端的倾斜卡面,有效卡死直齿条,限制支柱向下移动,有效在千斤顶出现意外状况向下移动时,被支撑物品直接下降造成安全事故,有效保证工作人员的人身安全;并且卡块下端设置倾斜滑面,使直齿条在上升时,使卡块有效转动,不妨碍顶板撑起物品,不影响千斤顶的正常工作;并且通过旋转螺纹旋块,使其挤压L型支块,转动卡块,能够使卡块转出直齿条,保证千斤顶的正常下降,操作简单快捷;本发明结构简单,使用方便,制造成本低,有效适用于千斤顶使用。


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    Title :

    Jack with high safety


    Additional title:

    一种安全性高的千斤顶


    Contributors:
    TANG KUNRUI (author) / QIAN CHANGYUN (author)

    Publication date :

    2020-08-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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