CN218935073U - Composite superelastic coupling with parallel membrane disc pins - Google Patents

Abstract

The utility model provides a parallel membrane disc pin composite super-elastic coupling which comprises a flange, an intermediate shaft, a membrane disc assembly and a pin assembly, wherein the inner edge of the membrane disc assembly is connected with the flange through a first mounting hole, the outer edge of the membrane disc assembly is connected with the intermediate shaft through a second mounting hole, the membrane disc assembly is formed by axially connecting a plurality of membrane discs in parallel, the additional axial displacement generated by a rubber body is avoided, the axial load of the membrane discs is greatly reduced, the radial size of the coupling is greatly reduced, the equal strength design under the working condition is realized, the obvious effects on reducing the weight and prolonging the service life are realized, and the usability of the coupling is improved; the elastic pin assembly not only increases the radial rigidity adjusting space of the coupler and improves the overall shockproof effect, but also has very small exposed area due to the installation positions of the elastic sleeve ring and the rubber gasket, reduces the corrosion degradation speed of the rubber component, and can effectively improve the service life of the pin assembly.

Description

Composite superelastic coupling with parallel membrane disc pins

Technical Field

The utility model relates to a coupler, in particular to a parallel membrane disc pin composite super-elastic coupler.

Background

The shafting of the large ship and the large generator set has the following characteristics: the high power and the relatively low rotating speed lead to the fact that the torque transmitted by the shafting is particularly large, and the torque even often reaches 105-106 N.m magnitude; the equipment has huge volume, the load of the bearing on the shafting is huge, the running accuracy of the shafting is relatively low, if the angular error and the axial error cannot be effectively absorbed, the counterforce caused by the angular error and the axial error is applied to the bearing again, the service life of the bearing is greatly shortened, and therefore, the shafting of the equipment needs a coupler with larger angular compensation amount and axial compensation amount to absorb the errors; the equipment is difficult to overhaul, even if the equipment cannot be overhauled once being installed (the hull is required to be disassembled for replacing parts of the shafting of the ship), the coupler used on the shafting of the equipment has higher service life requirement, namely the service life of the equipment is not lower than that of the equipment; the ship has the advantages that the loading capacity and the space are reserved for weaponry as much as possible under the condition of limited tonnage, so that strict requirements on weight and volume are met.

As shown in fig. 1 and 2, the conventional ship coupling mainly adopts a flexible rod rubber coupling and a diaphragm rubber coupling, but has the following problems:

(1) The rubber elastic element generates larger axial expansion when being twisted, and the axial displacement is applied to the flexible rod or the diaphragm, so that the flexible rod or the diaphragm is required to have larger capacity of absorbing the axial displacement, and the flexible rod or the diaphragm has to do quite large at the moment, otherwise, the axial displacement which is not absorbed is converted into quite large axial force to be applied to the bearing of the shafting, so that the bearing fails in advance;

(2) The axial expansion and unequal strength of the rubber can cause the radial structural dimension of the coupler structure to be increased, so that the structural quality is increased, and the whole coupler can become very heavy due to the weight of the rubber elastic element;

(3) The exposed rubber part is easy to deteriorate in the marine environment, so that the service life of the coupler is reduced, and the coupler is caused to fail in advance in the service period.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the problems, the utility model provides a parallel membrane disc pin composite super elastic coupling for solving the problems.

The technical scheme adopted for solving the technical problems is as follows: the composite super-elastic coupling comprises a flange, an intermediate shaft, a membrane disc assembly and an elastic pin assembly, wherein a plurality of first mounting holes are formed in the inner edge of the membrane disc assembly along the circumferential direction, and the membrane disc assembly is connected with the flange through the first mounting holes in a bolt mode; the outer edge of the membrane disc assembly is provided with a plurality of second mounting holes along the circumferential direction, and the membrane disc assembly is connected with the intermediate shaft through the second mounting holes in a bolt manner; the elastic pin assembly is mounted in the second mounting hole.

Further: the membrane disc assembly comprises a plurality of membrane discs, the membrane discs are spliced in parallel in the axial direction, and the membrane discs are compressed in the axial direction.

Further: the elastic pin assembly comprises an elastic collar and a rubber gasket, wherein the elastic collar is arranged in the second mounting hole, the rubber gasket is arranged on the left side and the right side of the second mounting hole, a steel gasket is arranged on the left side of the rubber gasket, and when a bolt is tightened in the second mounting hole, the elastic collar can be pressed on the inner wall of the second mounting hole.

Further: the elastic lantern ring and the rubber gasket are both made of polyurethane materials.

The utility model has the advantages that the mode of adopting an elastic rod or a rubber membrane group in the prior art is replaced by the parallel structure of the membrane disc, the occurrence of extra axial displacement phenomenon is avoided, the membrane disc only needs to absorb axial and radial errors of a shafting, so that the axial load of the membrane disc is greatly reduced, the radial size of the coupler can be greatly reduced by adopting the parallel structure, the equal strength design under the working condition is realized, the weight is reduced, the service life is prolonged, and the usability of the coupler is improved; the radial rigidity adjusting space of the coupler is increased through the elastic pin assembly, the integral shockproof effect is improved, the exposed area of the elastic sleeve ring and the rubber gasket is very small due to the installation position of the elastic sleeve ring and the rubber gasket, the corrosion and degradation speed of the rubber component is reduced, and the service life of the pin assembly can be effectively prolonged.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the construction of a flexible rod rubber coupling;

FIG. 2 is a schematic diagram of the structure of a diaphragm rubber coupling;

FIG. 3 is a schematic overall appearance of the present utility model;

FIG. 4 is a schematic view of the overall structure of the present utility model;

fig. 5 is an enlarged schematic view of the portion a in fig. 4.

In the figure, 1, a flange, 2, an intermediate shaft, 3, a membrane disc, 4, a first mounting hole, 5, a second mounting hole, 6, an elastic collar, 7, a rubber gasket, 8 and a steel gasket.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present utility model in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present utility model.

As shown in fig. 3 and 4, the utility model provides a parallel membrane disc pin composite superelastic coupling, which comprises a flange 1, an intermediate shaft 2, a membrane disc assembly and an elastic pin assembly, wherein a plurality of first mounting holes 4 are formed in the inner edge of the membrane disc assembly along the circumferential direction, and the membrane disc assembly is connected with the flange 1 through the first mounting holes 4 through bolts; the outer edge of the membrane disc assembly is provided with a plurality of second mounting holes 5 along the circumferential direction, and the membrane disc assembly is connected with the intermediate shaft 2 through the second mounting holes 5 through bolts; the elastic pin assembly is mounted in the second mounting hole 5.

The structure of the membrane disc assembly and the elastic pin assembly increases the axial rigidity and radial rigidity adjusting space of the coupler, and provides guarantee for vibration isolation and noise reduction of the whole shafting.

The membrane disc assembly comprises a plurality of membrane discs 3, a plurality of the membrane discs 3 are spliced in parallel in the axial direction, and the membrane discs 3 are compressed in the axial direction, so that compared with the membrane disc assembly of the existing coupler, the membrane disc assembly is prevented from adopting rubber bodies to generate additional axial displacement, and further, the membrane discs 3 are formed in parallel, so that the membrane discs 3 only need to absorb axial and radial errors of a shafting, the axial load of the membrane discs 3 is greatly reduced, and the parallel structural design can greatly reduce the radial dimension of the coupler, and due to the fact that the participation of rubber elastic elements is not included, the equal strength design under working conditions is realized, the axial dimension of an elastic unit of the coupler is effectively reduced, the size and the quality of the whole coupler are greatly reduced, and the service life of the coupler is prolonged.

As shown in fig. 5, the elastic pin assembly includes an elastic collar 6 and a rubber gasket 7, the elastic collar 6 is disposed in the second mounting hole 5, the rubber gasket 7 is disposed on the left and right sides of the second mounting hole 5, and a steel gasket 8 is disposed on the left side of the rubber gasket 7, so that the elastic collar 6 can be pressed against the inner wall of the second mounting hole 5 when the bolt is tightened in the second mounting hole 5.

When the membrane disc assembly is assembled with the intermediate shaft 2, the bolts penetrate through the elastic lantern rings 6 in the second mounting holes 5 and the nuts are tightened, so that the two ends of the elastic lantern rings 6 are stressed and pressed on the inner walls of the second mounting holes 5, clearance fit is generated between the bolts and the elastic lantern rings 6, radial rigidity adjusting space of the coupler can be increased, vibration isolation effect of the coupler is improved, and meanwhile, the elastic pin assembly is arranged in the second mounting holes 5, so that the exposed surface area of the elastic lantern rings 6 and the rubber gaskets 7 is very small, the corrosion and degradation speed of rubber components is reduced, and the service life of the elastic pin assembly can be effectively prolonged.

The elastic sleeve ring 6 and the rubber gasket 7 are made of polyurethane materials, the polyurethane materials are nontoxic and odorless, and are very green and environment-friendly, and the rubber gasket is good in wear resistance, acid and alkali resistance, low temperature resistance, oil resistance and the like, and is very suitable for being used on ships.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (4)

1. The utility model provides a compound super bullet shaft coupling of parallelly connected membrane dish pin which characterized in that: comprises a flange (1), an intermediate shaft (2), a membrane disc assembly and an elastic pin assembly,

the inner edge of the membrane disc assembly is provided with a plurality of first mounting holes (4) along the circumferential direction, and the membrane disc assembly is connected with the flange (1) through the first mounting holes (4) through bolts;

the outer edge of the membrane disc assembly is provided with a plurality of second mounting holes (5) along the circumferential direction, and the membrane disc assembly is connected with the intermediate shaft (2) through the second mounting holes (5) through bolts;

the elastic pin assembly is mounted in the second mounting hole (5).

2. The parallel membrane disc pin composite superelastic coupling as claimed in claim 1, wherein: the membrane disc assembly comprises a plurality of membrane discs (3), the membrane discs (3) are spliced in parallel in the axial direction, and the membrane discs (3) are compressed in the axial direction.

3. A parallel membrane disc pin composite superelastic coupling as claimed in claim 2, wherein: the elastic pin assembly comprises an elastic collar (6) and a rubber gasket (7), wherein the elastic collar (6) is arranged in the second mounting hole (5), the rubber gasket (7) is arranged on the left side and the right side of the second mounting hole (5), a steel gasket (8) is arranged on the left side of the rubber gasket (7), and when a bolt is tightened in the second mounting hole (5), the elastic collar (6) can be pressed on the inner wall of the second mounting hole (5).

4. A parallel membrane disc pin composite superelastic coupling as claimed in claim 3, wherein: the elastic lantern ring (6) and the rubber gasket (7) are made of polyurethane materials.

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