Sleeve type reciprocating transmission device

Abstract

The invention discloses a sleeve type reciprocating transmission device, and belongs to the technical field of gait training devices. The device comprises a shell; a driving assembly is provided with an output shaft and is fixed on the shell; a lead screw is provided with a first end and a second end, wherein the first end is sleeved with a radial bearing, and a thrust bearing is arranged at the end of the first end and rotationally connected with the shell; the lead screw is sleeved with a transmission seat, and the transmission seat is in transmission connection with the output shaft; threads are arranged on the outer surface of the second end; a nut is in threaded connection with the second end; and a mechanical arm can be driven to swing when the nut moves. According to mode that the lead screw rotates to drive the nut to move, swing of the mechanical arm is achieved; the thrust bearing between the lead screw and the shell can bear axial force applied to the lead screw by the mechanical arm; the situations of looseness, vibration, heating and the like between the lead screw and the nut can be prevented even after long-time use; the service life is prolonged; swing stability of the mechanical arm is guaranteed; and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to the technical field of gait training devices, in particular to a sleeve type reciprocating transmission device. Background technique [0002] Walking is the most basic movement in activities of daily living. In the goals and training plan of early rehabilitation treatment, the necessary functions of walking should be fully considered, and carefully guided and implemented, so as to lay a solid foundation for future walking therapy and mobile training. [0003] Coordination, mobility and stability are the three elements of walking. The ability to support body weight, maintain balance, and stride is essential for normal walking. The movements involved in walking (heel strike, single leg support, heel off the ground, leg swing, etc.) all require the coordinated movement of various parts of the body to form a complete, fine, proficient and continuous process in walking. For patients who have lost the ability to walk, the specific...

AI Technical Summary

Problems solved by technology

The swing of the mechanical arm is usually realized by linear drive. The component to realize the linear drive can be an electric push rod or a screw. During the process of driving the swing of the mechanical arm, the electric push rod or screw needs to bear a large force. Axial force, when used for a long time, the electric push rod or screw rod is prone to a series of problems such as looseness, vibration, heat, etc., which will not only affect the service life of the mechanical leg, but also affect the swing stability and swing of the mechanical arm The accuracy of the range will have certain security risks

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