Two-way overload protective device for drive mechanism

Abstract

The invention relates to a reciprocating linear walking drive mechanism, in particular to a two-way overload protective device for the reciprocating linear walking drive mechanism. According to the technical proposal provided by the invention, the two-way overload protective device for the drive mechanism comprises an outer cylinder and a pull rod capable of moving up and down in the outer cylinder; and a spring is sleeved outside the pull rod in the outer cylinder. The two-way overload protective device is characterized in that the spring comprises a first spring on the upper part and a second spring on the lower part; the pull rod between the first spring and the second spring is fixedly connected with a first pressure plate; the first pressure plate is provided with a thrust bar; the position, corresponding to the thrust bar, on the lateral wall of the outer cylinder is provided with a push rod hole; the outward extending end of the thrust bar extends out of the push rod hole; the end part of the outward extending end of the thrust bar is provided with a working face; the outside, corresponding to the position of the thrust bar, of the outer cylinder is provided with a travel switch; a contact head of the travel switch is matched with the working face. The two-way overload protective device can provide overload protection for the drive mechanism during both forward walking and backward walking.

Description

technical field [0001] The invention relates to a reciprocating linear traveling mechanism, in particular to a bidirectional overload protector used in the driving mechanism of the reciprocating linear traveling. Background technique [0002] The main function of the bidirectional overload protector is to provide the reaction force of the output torque of the drive reducer, and when the drive reducer is overloaded, the equipment will automatically stop and give an alarm to protect the equipment from damage. [0003] Currently commonly used overload protectors such as figure 1 As shown, the limit switch 7 is installed on the outer cylinder 4 of the overload protector. When the contact is freely extended, the electrical contact is in a normally closed state. When the contact is compressed to a certain length, the electrical contact will be disconnected and send out Alarm. At the position where the lance 15 is installed, the wall of the outer cylinder 4 has a waist-shaped hol...

AI Technical Summary

Problems solved by technology

This kind of overload protector can only bear tension, if it bears pressure, it cannot play a protective role, so it can only play a protective role in the driving mechanism of one-way walking (forward), but in the driving mechanism of reciprocating walking (forward and backward) Reverse travel does not play a protective role

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