Tensioning machine capable of withdrawing tapes automatically

Abstract

The invention discloses a tensioning machine capable of withdrawing tapes automatically. A fixing shaft and a shaft sleeve are arranged in a groove in a base, wherein the ends of the two sides of the shaft sleeve are each sleeved with a ratchet wheel, and the shaft sleeve can rotate around the shaft. A coil spring is arranged at one side of the base. The end of one side of a rotating shaft penetrates a side wall part corresponding to the rotating shaft and is connected with the end of one side of the coil spring. A pawl is arranged between the shaft sleeve and the fixing shaft, wherein the pawl is hinged to the pair of side wall parts of the base. The fixing shaft is provided with a torsional spring, wherein the torsional spring always drives the pawl to be engaged with the pair of ratchet wheels without being influenced by any external acting force. A locking plate is arranged between the ratchet wheel at any side and the side wall part corresponding to the ratchet wheel, wherein each locking plate is movably connected to the rotating shaft in a sleeving manner. A first protruding part is arranged at one side of each locking plate, wherein each first protruding part is used for driving the pawl to break away from the pair of ratchet wheels when the corresponding locking plate rotates. A protective shell used for sealing the base and the coil spring is further arranged outside the base. The end of the other side of the coil spring is fixed to the protective shell. By means of the tensioning machine, the technical effect that the service life of the tensioning machine capable of withdrawing the tapes automatically is prolonged is achieved; and the tensioning machine has the beneficial effect of being long in service life.

Description

technical field [0001] The invention relates to a tensioning machine, in particular to an automatic belt tensioning machine. Background technique [0002] Most of the tensioning machines currently on the market do not have the function of automatically retrieving the webbing. After unloading the goods, the operator has to spend a lot of time sorting and retrieving the webbing. [0003] In view of the above situation, the published Chinese invention patent document No. 200610050653.6 provides an automatic take-up tensioning machine, which includes a handle and a casing that are articulated through the main shaft, and the handle and the casing are respectively provided with large, A small baffle assembly, wherein the small baffle assembly includes a small baffle and a pressure spring, and the main shaft is provided with a take-up reel with ratchets at both ends and a take-up device for retrieving the webbing through a scroll spring The rear shaft of the casing is provided wit...

AI Technical Summary

Problems solved by technology

[0004] But a kind of automatic take-up and tensioning machine of the above-mentioned structure still has obvious technical defects, specifically: considering that the main parts of the above-mentioned automatic take-up and tensioning machine are made of metal materials, the parts are directly exposed Not only will it affect the appearance of the product, but the metal parts are directly exposed and in contact with the operator's hands. The edges of these parts are sharp, which may bring discomfort to the operator and even scratch the skin of the operator's hands. There are potential safety hazards; furthermore, considering that the above-mentioned automatic belt tensioning machine needs to be used in relatively harsh weather conditions (such as rain and snow) for a long time, these exposed metal parts are prone to oxidation or oxidation when they come into contact with water. Other chemical reacti

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