Ratchet wheel mechanism in ramp recycling device

Abstract

The invention discloses a ratchet wheel mechanism in a ramp recycling device. The ratchet wheel mechanism in the ramp recycling device comprises a rotating shaft, a rotating hub, a rotating sleeve, aratchet wheel and a pawl; the rotating shaft is sleeved with the rotating hub; the outer side of the rotating hub is sleeved with the rotating sleeve; the outer side of the rotating sleeve is sleevedwith one side of the ratchet wheel, and the other side of the ratchet wheel is connected with the rotating shaft through a first bearing; the outer circle of the rotating hub is provided with a notch;an ejecting ball block is arranged in the notch, and the bottom of the ejecting ball block is connected with a hub through a spring; the outer circle of the hub is further provided with a boss; the inner circle face of the rotating sleeve is provided with a boss groove; the boss is located in the boss groove; the boss groove is larger than the boss; the rotating sleeve is further provided with athrough hole; the ratchet wheel is provided with a groove corresponding to the position of the through hole; one side of the ratchet wheel is provided with the pawl matched with the ratchet wheel; andthe rotating shaft is further provided with a winding disk. The ratchet wheel mechanism is safer and more reliable and more convenient to operate.

Description

technical field [0001] The invention relates to a ratchet mechanism in a ramp recovery device, which is mainly used in evacuation ramps of rail transit and urban rail vehicles. Background technique [0002] At present, ramp recovery devices on the market generally adopt a ratchet and pawl structure. The traditional ratchet mechanism is provided with a total of two ratchets, a main ratchet and an auxiliary ratchet. The main ratchet and the auxiliary ratchet are coaxially mounted on the rotating shaft back to back. By rotating the auxiliary ratchet to adjust the deflection angle between the main ratchet and the auxiliary ratchet to achieve the purpose of deploying and recovering the ramp. This structure requires high processing and assembly precision for the main ratchet and auxiliary ratchet, which can easily cause the deflection angle adjustment between the main ratchet and auxiliary ratchet to be in place, the auxiliary ratchet to be reset in place, and the ratchet to be ...

AI Technical Summary

Problems solved by technology

This structure requires high processing and assembly precision for the main ratchet and auxiliary ratchet, which can easily cause the deflection angle adjustment between the main ratchet and auxiliary ratchet to be in place, the auxiliary ratchet to be reset in place, and the ratchet to be in contact with the notches of the main and auxiliary ratchets. Disadvantages such as the card is not in place, the pawl enters and exits the ratchet groove and produces impact noise, etc.

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