Telescopic mechanism with simple and detachable roller wheel device

Abstract

The invention discloses a telescopic mechanism with a simple and detachable roller wheel device. The telescopic mechanism comprises two wheel bodies and a middle connecting shaft body, wherein the outer wall of each wheel body is provided with a wheel groove; an axial through hole is formed in the middle of each wheel body; the middle lateral wall of each axial through hole is provided with a connecting protruding ring; the inner wall of each connecting protruding ring is provided with a plurality of protruding strips; a bearing is inserted into each connecting protruding ring; the protruding strips are inserted into corresponding strip-shaped grooves in the outer wall of outer rings of the corresponding bearings; a rotary shaft is fixed in the inner ring of each bearing, and the connecting end of each rotary shaft is provided with a spline shaft part; the two ends of the middle connecting shaft body are provided with spline holes, and the spline shaft parts are inserted into the corresponding spline holes; end covers are fixed at the two ends of the middle connecting shaft body, and the connecting ends of the rotary shafts are inserted into the end covers; a buffering spring is arranged between each spline shaft part and the bottom end of the corresponding spline hole. The telescopic mechanism with the simple and detachable roller wheel device can prevent derailing during running, and meanwhile the bearings in the wheel bodies are convenient to dismount and mount.

Description

Technical field: [0001] The invention relates to the technical field of roller device equipment, and more specifically relates to a telescoping mechanism for a simple and detachable roller device. Background technique: [0002] In the existing transmission shaft mechanism, the rollers at both ends of the shaft body are fixed to realize rolling, and the distance between the shaft body and the two rollers will not move, that is, the distance is fixed, and the track will move between the wheels when turning. The clamping position is generated, so that when the trolley using this mechanism is running on the track, it is easy to derail when the trolley turns, causing an accident. [0003] And what the existing roller structure generally adopts is that the axial through hole that the middle part of the wheel has has clamps and fixes the bearing by interference fit, and then is fixed on the bearing through the rotating shaft, and the wearing part of the roller is the bearing, and b...

AI Technical Summary

Problems solved by technology

[0002] In the existing transmission shaft mechanism, the rollers at both ends of the shaft body are fixed to realize rolling, and the distance between the shaft body and the two rollers will not move, that is, the distance is fixed, and the track will move between the wheels when turning. The clamping position is generated, so that when the trolley using this mechanism is running on the track, it is easy to derail when the trolley turns, causing accidents

[0003] Moreover, the existing roller structure generally adopts the axial through hole in the middle of the wheel body to fix the bearing through interference fit, and then fix it on the bearing through the rotating shaft, and the wearing part of the roller is the bearing, and because the bearing It is fixed on the wheel body through interference fit, which makes its disassembly very troublesome, thus greatly reducing the effect of its maintenance, and the improper disassembly of the bearing is easy to damage the roller, so the roller needs to be replaced, which increases the maintenance cost

Images