Bothway ratchet mechanism

The invention relates to a bothway ratchet mechanism. The bothway ratchet mechanism comprises a shaft sleeve, an upper pawl, a lower pawl, a ratchet shaft, a reversing sliding block and an outer cover, wherein the ratchet shaft is provided with a ratchet wheel, the shaft sleeve is provided with a slot, and the part, comprising the ratchet wheel, of the ratchet shaft is arranged in the shaft sleeve. The upper pawl and the lower pawl are oppositely arranged in the slot of the shaft sleeve and located on the two sides of the ratchet wheel. The upper pawl and the lower pawl are meshed with the ratchet wheel in the opposite directions. The reversing sliding block is arranged between the upper pawl and the lower pawl in a sliding mode and abuts against the upper pawl and the lower pawl. The outer cover is arranged outside the shaft sleeve in a sleeved mode and enables the reversing sliding block to be located between the upper pawl and the lower pawl. The outer cover is provided with a reversing groove, and part of the reversing sliding block is exposed out of the reversing groove. The shaft sleeve is an input shaft of the bothway ratchet mechanism, and the ratchet shaft is an output shaft of the bothway ratchet mechanism. According to the bothway ratchet mechanism, the input shaft and the output shaft of the bothway ratchet mechanism rotate in the same direction or the reverse directions, and the bothway ratchet mechanism is convenient and reliable to use and simple in structure .