Rubber Couplings Flexible coupling for shaft construction
Since the sleeve or the ring piece surrounding the sleeve is able to approach the stopper or abut against the stop in use of the coupling, an improvement of the arrangement dictates that the stop, The direction of the sleeve is curved in a concave manner. That is to say, these stoppers are fitted to the sleeve and the shape or radius of the loop around the sleeve. The coupling is a resilient coupling for a shaft structure for articulating the two shaft segments and comprising a plurality of sleeves and a plurality of ring pieces, the plurality of sleeves having respect to the central axis M of the coupling And the circumference is arranged at a predetermined angular spacing, each of which surrounds two adjacent sleeves and each sleeve is surrounded by at least two ring pieces, wherein one of the loop pieces is capable of transmitting torque through the shaft section And the other ring piece is capable of withstanding the thrust, and further comprises a support mechanism for guiding the plurality of ring pieces on at least one of the sleeves and a rubber elastic housing, the loop plate, the support mechanism and the sleeve at least partially Placed in the housing. The support mechanism has at least two separate snap rings which are individually constructed and disposed on the sleeve, each having a retaining ring against the opposite axial end of the ring piece subjected to the tension, the axial position of the collar relative to the sleeve, The predetermined theoretical cross-section of the supported loop pieces is predetermined.
In view of the prior art, the purpose of the coupling is to provide a flexible coupling provided with a slot with improved shape which reduces or disperses the stress concentration and obtains a more uniform stress distribution, Thereby avoiding cracking or any other damage to the coupling and improving the reliability and durability of the coupling.
The flexible coupling includes a tubular hub made of a rigid material, wherein the hub is provided with a slot extending substantially circumferentially to provide flexibility to the hub, the hub having an axial bore, The rotational force of the active rotational shaft accommodated in the axial bore at one end of the hub can be transmitted to the driven shaft which is connected to the other end of the hub, wherein the circumferential end portion of the hub adjacent to the slit portion Are convex shapes having an arcuate rearwardly inclined surface at least at the outer circumferential portion.
The flexible coupling was subjected to a fatigue fracture test. The test showed that when a load of 150% was applied more than the rated load, the conventional coupling was broken when the load was applied for about 3 million times, and the load was applied even more than 10 million times Still work correctly.
The new coupling includes an active half coupling, a passive half coupling, an active half coupling and a passive half coupling with connection holes in the connection hole for connecting the active half coupling and the passive half The pin of the coupling pin, the elastic sleeve on the pin. The new coupling structure is reasonable, easy assembly, light weight, small size, low production cost, with quantitative compensation of two-axis relative offset, vibration, cushioning and other performance, power transmission performance, can be widely used in positive and negative changes Many, starting more frequent in the low-speed rotation shaft system.
The coupling, including the active half coupling, the passive half coupling, the active half coupling and the passive half coupling are provided with connection holes which include tapered holes on the half coupling and passive The cylindrical hole on the coupling shaft is connected with the connecting pin of the active half coupling and the passive coupling, and is fixed with elastic pad and nut, and the elastic sleeve is set on the pin. An elastomer with a large coefficient of friction is compounded on the outer surface of the passive half coupling.