Large-torque diaphragm coupling based on w-shaped curved surface stacked disc structure

Abstract

The utility model relates to a kind of big torque membrane disc coupling based on W type curved surface stacking disc structure, it is related to coupling transmission field.The big torque membrane disc coupling based on W type curved surface stacking disc structure provided by the present technical solution, by the superposition of multiple W type thin-walled curved surface flexible membrane disc, significantly improve the transmission torque capacity, meet the demand of big torque scene;Outer flange transmission torque hole and inner flange transmission torque spline superimposed form integral transmission torque structure, the stability and transmission torque efficiency of coupling with external component are enhanced.In addition, W type thin-walled curved surface has excellent compensation capacity, can flexibly compensate shafting misalignment, reduce vibration noise, it balances flexibility and strength by virtue of relatively thin wall thickness and specific waveform ratio;And the transition design of conical surface and adapter fillet, then reduce stress concentration, improve overall reliability and life, suitable for high-speed high-power equipment.

Description

Technical Field

[0001] This utility model relates to the field of coupling transmission technology, and in particular to a high-torque diaphragm coupling based on a W-shaped curved surface stacked disc structure. Background Technology

[0002] In modern industry, various pumps, fans, and compressor units driven by gas turbines, steam turbines, and electric motors, especially high-speed, high-power turbine compressor units, place stringent demands on the performance of couplings. Diaphragm couplings, with their inherent advantages, occupy an important position in these applications, capable of adapting to working conditions sensitive to coupling weight and suspension bending moment. However, traditional diaphragm couplings have revealed a series of problems in practical use:

[0003] Traditional diaphragm couplings typically employ a one-piece, machined, curved surface structure that is thinner at the top and thicker at the bottom. This structure is insufficient for high-torque applications, failing to meet the demands of increasingly powerful equipment. When equipment requires the transmission of large torques, traditional diaphragm couplings may deform or even break, affecting the normal operation and lifespan of the equipment. Furthermore, the one-piece structure limits the flexibility and effectiveness of the diaphragm in compensating for relative displacement between the two shafts, making it unable to effectively address misalignment issues in complex operating conditions. This not only reduces transmission efficiency but may also cause additional vibration and noise, further negatively impacting the stability and reliability of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a high-torque diaphragm coupling based on a W-shaped curved surface stacked disc structure to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-torque diaphragm disk coupling based on a W-shaped curved surface stacked disk structure includes multiple stacked flexible diaphragm disks, wherein the flexible diaphragm disks include:

[0007] An outer flange is provided with a torque transmission hole. Multiple flexible diaphragm discs with aligned and stacked torque transmission holes are installed to form an integral torque transmission hole, which connects to the outer mounting flange for torque transmission.

[0008] The inner flange is provided with a transmission spline. After the transmission splines of multiple flexible diaphragm discs are aligned and stacked, an integral transmission spline is formed. The integral transmission spline is connected to the external intermediate shaft for transmission.

[0009] The outer flange and the inner flange have a W-shaped thin-walled curved surface composed of multiple curve segments. After the W-shaped thin-walled curved surfaces of multiple flexible diaphragm disks are aligned and stacked, a W-shaped thin-walled profile is formed. The W-shaped thin-walled profile can compensate for the misalignment of the outer intermediate shaft relative to the outer mounting flange by means of the deformation of the W-shaped thin-walled curved surface.

[0010] In one possible implementation, an upper conical surface is provided between the outer flange and the W-shaped thin-walled curved surface for smooth transition and torque transmission.

[0011] In one possible implementation, an upper transition fillet is provided between the outer flange and the upper tapered surface for a smooth transition and torque transmission.

[0012] In one possible implementation, a lower conical surface is further provided between the inner flange and the W-shaped thin-walled curved surface for smooth transition and torque transmission.

[0013] In one possible implementation, a lower transition fillet is provided between the inner flange and the lower tapered surface for a smooth transition and torque transmission.

[0014] In one possible implementation, the thickness T1 of the W-shaped thin-walled curved surface is 0.3-3 mm.

[0015] In one possible implementation, the ratio of the first waveform height H1 to the second waveform height H2 of the W-shaped thin-walled surface is 7:10 to 1:1.

[0016] In one possible implementation, the ratio of the first waveform length L1 to the second waveform length L2 of the W-shaped thin-walled surface is 3:5 to 5:3.

[0017] The beneficial effects of the technical solution provided by this utility model include at least the following:

[0018] This technical solution provides a high-torque diaphragm coupling based on a W-shaped curved surface stacked structure. By stacking multiple W-shaped thin-walled curved flexible diaphragms, it significantly improves torque transmission capacity, meeting the needs of high-torque scenarios. The torque transmission holes on the outer flange and the torque transmission splines on the inner flange are stacked to form an integrated torque transmission structure, enhancing the stability and torque transmission efficiency when connected to external components. Furthermore, the W-shaped thin-walled curved surface possesses excellent compensation capabilities, flexibly compensating for shaft misalignment and reducing vibration and noise. Its thin wall thickness and specific waveform proportions balance flexibility and strength. The transition design of the tapered surface and fillet radius reduces stress concentration, improving overall reliability and lifespan, making it suitable for high-speed, high-power equipment. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] Figure 1 This diagram illustrates the structure of a high-torque diaphragm coupling based on a W-shaped curved surface stacked disk structure, provided by an exemplary embodiment of the present invention.

[0021] Figure 2 This illustration shows a schematic diagram of the flexible diaphragm disk of a high-torque diaphragm disk coupling based on a W-shaped curved surface stacked disk structure, provided in an exemplary embodiment of the present invention.

[0022] In the picture:

[0023] 1. Flexible diaphragm disc; 2. Integral transmission twist spline; 3. Integral transmission twist hole; 4. W-shaped thin-walled profile;

[0024] 1-1. Torque transmission spline; 1-2. Torque transmission hole; 1-3. Outer flange; 1-4. Upper transition fillet; 1-5. Upper conical surface; 1-6. W-shaped thin-walled curved surface; 1-7. Lower conical surface; 1-8. Lower transition fillet; 1-9. Inner flange. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1This diagram illustrates the structure of a high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure, according to an exemplary embodiment of the present invention. Figure 2 This illustration shows a schematic diagram of the flexible diaphragm of a high-torque diaphragm coupling based on a W-shaped curved surface stacked disc structure, provided in an exemplary embodiment of the present invention. The high-torque diaphragm coupling based on the W-shaped curved surface stacked disc structure includes multiple stacked flexible diaphragm discs 1. Each flexible diaphragm disc 1 includes: an outer flange 1-3 with torque transmission holes 1-2; the torque transmission holes 1-2 of the multiple flexible diaphragm discs 1 are aligned and stacked to form an integral torque transmission hole 3, which is connected to the outer mounting flange for torque transmission; and an inner flange 1-9 with... The transmission spline 1-1 and the transmission splines 1-1 of multiple flexible diaphragm discs 1 are aligned and stacked to form an integral transmission spline 2. The integral transmission spline 2 is connected to the external intermediate shaft for transmission. Among them, there is a W-shaped thin-walled curved surface 1-6 composed of multiple curves between the outer flange 1-3 and the inner flange 1-9. The W-shaped thin-walled curved surface 1-6 of multiple flexible diaphragm discs 1 are aligned and stacked to form a W-shaped thin-walled profile 4. The W-shaped thin-walled profile 4 can compensate for the misalignment of the external intermediate shaft relative to the external mounting flange by means of the deformation of the W-shaped thin-walled curved surface 1-6.

[0029] In this embodiment, multiple superimposed flexible diaphragm disks 1 combine the performance of individual scales through a parallel structure, improving overall torque transmission and compensation capabilities. Torque transmission holes 1-2 on the outer flange 1-3 are aligned and superimposed to form an integral torque transmission hole 3. This utilizes multi-point synergistic force distribution to disperse the load, enhancing the connection stability with the external mounting flange and ensuring efficient torque transmission. Torque transmission splines 1-1 on the inner flange 1-9 are superimposed to form an integral torque transmission spline 2. The interlocking of the spline teeth increases the contact area, strengthening the connection rigidity with the external intermediate shaft and preventing slippage to stabilize torque transmission. W-shaped thin-walled curved surfaces 1-6 between the outer flange 1-3 and the inner flange 1-9 are superimposed to form a W-shaped thin-walled profile 4. Utilizing the elastic deformation characteristics of multiple curve segments, the coordinated deformation of each curved surface flexibly compensates for shaft misalignment, while the thin-walled structure reduces the impact of overall weight on suspension bending moment.

[0030] In an optional embodiment, see [link to relevant documentation] Figure 2 An upper conical surface 1-5 is provided between the outer flange 1-3 and the W-shaped thin-walled curved surface 1-6 for a smooth transition and torque transmission. An upper transition fillet 1-4 is also provided between the outer flange 1-3 and the upper conical surface 1-5 for a smooth transition and torque transmission. A lower conical surface 1-7 is also provided between the inner flange 1-9 and the W-shaped thin-walled curved surface 1-6 for a smooth transition and torque transmission. A lower transition fillet 1-8 is also provided between the inner flange 1-9 and the lower conical surface 1-7 for a smooth transition and torque transmission.

[0031] The upper conical surface 1-5 is positioned between the outer flange 1-3 and the W-shaped thin-walled curved surface 1-6. The conical transition smooths the connection, ensuring a more uniform torque transmission from the outer flange 1-3 to the W-shaped thin-walled curved surface 1-6 and preventing sudden increases in localized stress. The upper transition fillet 1-4 is located between the outer flange 1-3 and the upper conical surface 1-5. The rounded transition eliminates stress concentration issues associated with right-angle connections, further optimizing the torque transmission path and enhancing the structural strength of the connection between the outer flange 1-3 and the upper conical surface 1-5. The lower conical surface 1-7 is located between the inner flange 1-9 and the W-shaped thin-walled curved surface 1-6. The conical structure ensures a smooth connection between the inner flange 1-9 and the W-shaped thin-walled curved surface 1-6, guaranteeing more stable torque transmission from the inner flange 1-9 to the W-shaped thin-walled curved surface 1-6. The lower transition fillet 1-8 is located between the inner flange 1-9 and the lower conical surface 1-7. The arc-shaped characteristic of the fillet disperses stress, enhances the fatigue resistance of the connection between the inner flange 1-9 and the lower conical surface 1-7, and extends the overall service life.

[0032] In an optional embodiment, see [link to relevant documentation] Figure 2 The thickness T1 of the W-shaped thin-walled curved surface 1-6 is 0.3-3mm. The ratio of the height H1 of the first waveform to the height H2 of the second waveform of the W-shaped thin-walled curved surface 1-6 is 7:10 to 1:1. The ratio of the length L1 of the first waveform to the length L2 of the second waveform of the W-shaped thin-walled curved surface 1-6 is 3:5 to 5:3.

[0033] In this embodiment, the thickness T1 of the W-shaped thin-walled curved surface 1-6 is set between 0.3-3 mm. This parameter range is determined based on the principle of balance between flexibility and structural strength in material mechanics. From a practical application perspective, if the thickness exceeds 3 mm, the rigidity of the curved surface will significantly increase, making it difficult to generate effective elastic deformation when relative displacement occurs in the shaft system, thus reducing the ability to compensate for coupling installation deviations. Conversely, if the thickness is less than 0.3 mm, the structural strength of the curved surface is greatly weakened, making it prone to plastic deformation or even fracture during the transmission of large torques. Being within the 0.3-3 mm range ensures that the curved surface has sufficient elastic deformation space to accurately compensate for radial, axial, and angular deviations between the two shafts, while also providing reliable structural support for torque transmission, ensuring stability under long-term high-load operation.

[0034] In this embodiment, the ratio of the height H1 of the first waveform to the height H2 of the second waveform is controlled between 7:10 and 1:1. This reasonable ratio of waveform heights achieves a synergistic effect on the curved surface during deformation under stress. When the coupling is running, the two waveforms will experience varying degrees of bending deformation due to shaft misalignment. This ratio range allows the deformation of the two waveforms to be coordinated, preventing one waveform from bearing excessive stress due to excessive height, or from failing to effectively participate in deformation compensation due to insufficient height. This synergistic effect not only improves the overall compensation accuracy of the curved surface but also reduces the risk of local fatigue damage and extends its service life.

[0035] In this embodiment, the ratio of the first waveform length L1 to the second waveform length L2 is set to 3:5 to 5:3, determined based on the principle of force transmission path optimization. The waveform length directly affects the torque transmission path and stress distribution within the curved surface. An excessively large or small ratio can cause torque concentration in a localized area of ​​a particular waveform, leading to stress peaks. A ratio of 3:5 to 5:3 allows the two waveforms to evenly distribute the torque transmission load, resulting in a dispersed stress distribution throughout the curved surface and reducing the probability of localized stress concentration. This setting ensures that the W-shaped thin-walled curved surface 1-6 will not experience premature failure due to excessive localized stress when subjected to high torque, further enhancing the overall load-bearing capacity and operational reliability of the coupling.

[0036] Next, the working principle of the high-torque diaphragm coupling based on the W-shaped curved surface stacked disk structure involved in the embodiments of this utility model will be explained.

[0037] First, a single flexible membrane disk 1 that meets the size requirements is manufactured by machining. The thickness T1 of the W-shaped thin-walled curved surface 1-6 is precisely controlled between 0.3-3mm, as well as the ratio of the first waveform height H1 to the second waveform height H2 and the first waveform length L1 to the second waveform length L2, to ensure that it has good flexibility and strength.

[0038] Next, multiple flexible diaphragm discs 1 are stacked and assembled so that the torsion transmission holes 1-2 on the outer flange 1-3 are aligned to form an integral torsion transmission hole 3, and the torsion transmission splines 1-1 on the inner flange 1-9 are aligned to form an integral torsion transmission spline 2. The overall torsion transmission capacity is improved by parallel stacking.

[0039] During operation, the external mounting flange transmits torque to the outer flange 1-3 through the integral torque transmission hole 3, then transitions to the W-shaped thin-walled curved surface 1-6 via the upper transition fillet 1-4 and the upper conical surface 1-5, and then to the inner flange 1-9 via the lower conical surface 1-7 and the lower transition fillet 1-8, and finally to the external intermediate shaft via the integral torque transmission spline 2.

[0040] Meanwhile, the W-type thin-walled curved surface 1-6 utilizes its waveform structure and parameter design to undergo elastic deformation during torque transmission, compensating for the relative displacement between the external intermediate shaft and the external mounting flange, thereby achieving coordinated torque transmission and deviation compensation, and meeting the stable operation requirements under high torque conditions.

[0041] In summary, the high-torque diaphragm coupling based on a W-shaped curved surface stacked structure provided by this technical solution significantly improves torque transmission capacity through the stacking of multiple W-shaped thin-walled curved flexible diaphragms, meeting the requirements of high-torque scenarios. The torque transmission holes of the outer flange and the torque transmission splines of the inner flange are stacked to form an integral torque transmission structure, enhancing the stability and torque transmission efficiency of the connection with external components. In addition, the W-shaped thin-walled curved surface has excellent compensation capabilities, which can flexibly compensate for shaft misalignment and reduce vibration and noise. With its thin wall thickness and specific waveform ratio, it balances flexibility and strength. The transition design of the tapered surface and the fillet of the transition reduces stress concentration, improves overall reliability and lifespan, and is suitable for high-speed, high-power equipment.

[0042] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0043] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure, characterized in that, It includes multiple flexible membrane disks (1) stacked on top of each other, wherein the flexible membrane disks (1) include: An outer flange (1-3) is provided with a torque transmission hole (1-2). Multiple flexible diaphragm discs (1) are aligned and stacked to form an integral torque transmission hole (3). The integral torque transmission hole (3) is connected to the outer mounting flange for torque transmission. The inner flange (1-9) is provided with a transmission spline (1-1). After the transmission splines (1-1) of multiple flexible diaphragm discs (1) are aligned and stacked, an integral transmission spline (2) is formed. The integral transmission spline (2) is connected to the external intermediate shaft for transmission. Among them, the outer flange (1-3) and the inner flange (1-9) have a W-shaped thin-walled curved surface (1-6) composed of multiple curve segments. After the W-shaped thin-walled curved surfaces (1-6) of multiple flexible diaphragm discs (1) are aligned and stacked, a W-shaped thin-walled profile (4) is formed. The W-shaped thin-walled profile (4) can compensate for the misalignment of the outer intermediate shaft relative to the outer mounting flange by relying on the deformation of the W-shaped thin-walled curved surface (1-6).

2. The high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure according to claim 1, characterized in that, An upper conical surface (1-5) is also provided between the outer flange (1-3) and the W-shaped thin-walled curved surface (1-6) for smooth transition and torque transmission.

3. The high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure according to claim 2, characterized in that, An upper transition fillet (1-4) is also provided between the outer flange (1-3) and the upper conical surface (1-5) for smooth transition and torque transmission.

4. The high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure according to claim 1, characterized in that, A lower conical surface (1-7) is also provided between the inner flange (1-9) and the W-shaped thin-walled curved surface (1-6) for smooth transition and torque transmission.

5. The high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure according to claim 4, characterized in that, A lower transition fillet (1-8) is also provided between the inner flange (1-9) and the lower conical surface (1-7) for smooth transition and torque transmission.

6. The high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure according to any one of claims 1 to 5, characterized in that, The thickness T1 of the W-shaped thin-walled curved surface (1-6) is 0.3-3mm.

7. The high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure according to any one of claims 1 to 5, characterized in that, The ratio of the first waveform height H1 to the second waveform height H2 of the W-shaped thin-walled curved surface (1-6) is 7:10 to 1:

1.

8. The high-torque diaphragm disc coupling based on a W-shaped curved surface stacked disc structure according to any one of claims 1 to 5, characterized in that, The ratio of the first waveform length L1 to the second waveform length L2 of the W-shaped thin-walled curved surface (1-6) is 3:5 to 5:3.

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