CN-121993507-A - Membrane disc coupling mechanism with low cantilever moment

CN121993507ACN 121993507 ACN121993507 ACN 121993507ACN-121993507-A

Abstract

The application relates to the field of mechanical transmission, and particularly provides a membrane disc coupling mechanism with low cantilever moment. The coupling comprises a hub, a membrane disc and an intermediate shaft, wherein the two hubs are coaxially arranged at two ends of the intermediate shaft, the two membrane discs are respectively arranged between the hub and the intermediate shaft and are connected through bolts and self-locking nuts, one end, far away from the intermediate shaft, of the hub is provided with a connecting flange, the other end of the hub penetrates through the membrane disc and extends into the intermediate shaft, the two axial ends of the membrane disc are respectively provided with a first connecting flange and a second connecting flange, the two axial ends of the intermediate shaft are provided with connecting flanges, the connecting flanges of the hub are connected with the first connecting flange, and the connecting flanges of the intermediate shaft are connected with the second connecting flange. According to the application, the connecting flange of the hub is arranged at one end far away from the intermediate shaft, and the hub stretches into the intermediate shaft, so that the load of the cantilever end of the equipment shaft is reduced, the additional bending moment is reduced, and the service life of the bearing and the operation stability of the equipment are improved.

Inventors

GAO GUANHUA
LI HUIJING
TANG JIAN

Assignees

大同市巴什卡机械制造有限公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (10)

1. The membrane disc coupler mechanism with the low cantilever moment comprises a hub, a membrane disc and an intermediate shaft, wherein the two hubs are coaxially arranged at two ends of the intermediate shaft, the two membrane discs are respectively arranged between the hub and the intermediate shaft and are connected through bolts and self-locking nuts, and the membrane disc coupler mechanism is characterized in that one end of the hub, which is far away from the intermediate shaft, is provided with a connecting flange, and the other end of the hub penetrates through the membrane disc and extends into the intermediate shaft; the axial both ends of membrane dish are equipped with first flange and second flange respectively, the axial both ends of jackshaft are equipped with flange, wheel hub's flange with first flange connects, the flange of jackshaft with second flange connects.
2. The membrane disc coupling mechanism with low cantilever moment according to claim 1, wherein the hub comprises a small diameter portion arranged close to the intermediate shaft and a large diameter portion arranged close to a connecting flange of the hub, and a stepped spigot is formed at the junction of the small diameter portion and the large diameter portion.
3. The membrane disc coupling mechanism with low cantilever moment according to claim 1, wherein the shaft hole of the hub is any one of a conical shaft hole, a splined cylindrical shaft hole or a splined shaft hole.
4. The low cantilever moment membrane disc coupling mechanism of claim 1, wherein the outer diameter of the first connecting flange is smaller than the outer diameter of the second connecting flange.
5. The membrane disc coupling mechanism with low cantilever moment according to claim 4, wherein the second connecting flange is provided with a curved surface portion on a side facing the intermediate shaft.
6. The membrane disc coupling mechanism with low cantilever moment according to claim 1, wherein the inner wall of the intermediate shaft near the extending end of the hub is provided with a circular ring part.
7. The membrane disc coupling mechanism with low cantilever moment according to claim 1, wherein an adjusting gasket is arranged between the second connecting flange and the connecting flange of the intermediate shaft.
8. The membrane disc coupling mechanism with low cantilever moment according to claim 1, wherein the coupling is further provided with a protective cover, the protective cover comprises a first protective edge, a radial connecting portion and a second protective edge, one end of the radial connecting portion is fixed to the middle portion of the first protective edge, and the other end of the radial connecting portion is fixed to the end portion of the second protective edge.
9. The low cantilever moment membrane disc coupling mechanism of claim 8, wherein the boot is mounted to the side of the second attachment flange remote from the intermediate shaft by the radial connection.
10. The low cantilever moment membrane disc coupling mechanism of claim 8, wherein the first guard and the second guard axially cover at least the self-locking nut in the installed state.

Description

Membrane disc coupling mechanism with low cantilever moment Technical Field The application relates to the field of mechanical transmission, in particular to a membrane disc coupling mechanism with low cantilever moment. Background The film disc coupler is an important part widely applied to a mechanical transmission system and is mainly used for connecting a driving shaft with a driven shaft and transmitting torque. The membrane disc coupling can effectively compensate for shaft misalignment due to manufacturing tolerances, installation errors, or axial, radial, and angular deviations during operation, using the elastic deformation characteristics of the membrane disc. The advantages of the damping and buffering device are obvious in damping and buffering and improving the dynamic performance of the shafting, so that the damping and buffering device is widely applied to mechanical equipment with high precision, high stability and vibration resistance. The existing membrane disc coupling mostly adopts traditional structural design and generally comprises a hub, a membrane disc, an intermediate shaft, a protective cover and other parts. In the prior art, the hub is typically mounted on the outboard side of the coupling, resulting in the equipment shaft cantilever end being subjected to significant loads and additional bending moments. The mounting mode increases the weight of the cantilever end of the shaft, generates larger additional bending moment, further influences the stability of equipment, aggravates the abrasion of the bearing, and particularly shortens the service life of the bearing under the conditions of high-speed operation and high load. In addition, the diameter of the intermediate shaft in the existing design is usually smaller, so that the transverse rigidity of the coupler is lower, the transverse natural frequency is lower, vibration is easy to occur, and the high-load operation stability of equipment is affected. While the prior art has attempted to address some of these issues by increasing bearing strength, changing hub materials, or reinforcing rigid designs, these improvements have failed to fundamentally address the issues of excessive additional bending moment, excessive axle cantilever end loads, which has resulted in devices with increased reliability and service life in high load, high stability applications that have not yet been fundamentally improved. Thus, there is a need for an improved membrane disc coupling design to reduce the additional bending moment at the cantilevered end of the shaft, thereby fundamentally improving the stability of the device and the service life of the bearing. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides a membrane disc coupling mechanism with low cantilever moment, so as to solve the problem of poor equipment stability caused by overlarge additional bending moment in the prior art. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The application provides a membrane disc coupling mechanism with low cantilever moment, which comprises a hub, a membrane disc and an intermediate shaft, wherein the two hubs are coaxially arranged at two ends of the intermediate shaft, the two membrane discs are respectively arranged between the hub and the intermediate shaft and are connected through bolts and self-locking nuts, one end of the hub, which is far away from the intermediate shaft, is provided with a connecting flange, the other end of the hub penetrates through the membrane disc and extends into the intermediate shaft, the two axial ends of the membrane disc are respectively provided with a first connecting flange and a second connecting flange, the two axial ends of the intermediate shaft are provided with connecting flanges, the connecting flanges of the hub are connected with the first connecting flange, and the connecting flanges of the intermediate shaft are connected with the second connecting flange. In the application, one end of the hub, which is far away from the intermediate shaft, is provided with a connecting flange and is connected with a first connecting flange of the membrane disc, and the other end of the hub penetrates through an inner hole of the membrane disc and extends into the intermediate shaft, so that the hub is not integrally arranged outside the coupling, but a part of the hub axially enters one side of the intermediate shaft. In this way, the structural length of the part of the hub, which is originally positioned outside the cantilever end of the equipment shaft, is reduced, the mass of the overhanging part of the coupling is reduced, the whole mass center is offset inwards relative to the supporting position of the equipment shaft, the action positions of gravity load and running load formed by the mass of the part at the cantilever end are offset inwards along with the gravity load and the action positions of the running