The invention relates to a mechanical telescopic device. The mechanical telescopic device is characterized by consisting of a telescopic device connecting head, a guide spline bar, a telescopic device casing, a rectangular screw rod shaft, a telescopic slide sleeve, a copper nut, a force applying rod, a girth gear conversion device, a small bevel gear shaft, a small bevel gear, a large bevel gear, a thrust bearing, a screw rod bearing seat and a screw rod locking nut, wherein one end of the small bevel gear shaft is connected with the force applying rod through the girth gear conversion device, and the small bevel gear is arranged at the other end of the small bevel gear shaft; the copper nut is adopted by the rectangular screw rod bearing, so as to prevent the adhesion when the rectangular screw rod shaft rotates with rectangular threads of the telescopic slide sleeve under the action of force; the rectangular screw rod shaft and the telescopic slide sleeve are controlled by the guide spline bar to only do telescopic movement, and the telescopic slide sleeve does not rotate together with the rectangular screw rod shaft; one end of the rectangular screw rod shaft is matched with the telescopic slide sleeve through the rectangular threads, the large bevel gear and the thrust bearing are arranged at the other end of the rectangular screw rod shaft, and the top end of the rectangular screw rod shaft penetrates through the screw rod bearing seat and is locked by the screw rod locking nut; the small bevel gear is engaged with the large bevel gear, the small bevel gear shaft rotates to drive the rectangular screw rod shaft to rotate, and the telescopic slide sleeve is driven to extend and retract.
Mechanical telescopic device
2015-07-29
Patent
Electronic Resource
English
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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