Diaphragm coupling

Abstract

The utility model discloses a diaphragm coupling which comprises a first shaft sleeve, a first expansion ring, a connecting shaft, a first flange and a first diaphragm. The first shaft sleeve comprises an integrally formed first connecting part and a first shaft ring arranged at one end of the first connecting part, the first shaft ring is a regular circular ring, a plurality of first adjusting holes extending in the radial direction of the first shaft ring are formed in the first shaft ring, the first adjusting holes are evenly distributed in the circumferential direction of the shaft ring, and the shaft is a regular circular ring; in other words, the cross section of the shaft ring is perfectly circular, and irregular shapes or protrusions do not exist. After the diaphragm coupling and other components of the rotating system are mounted, the shaft ring of the diaphragm coupling is certainly exposed in the mounting window, so that when the dynamic balance of the whole rotating system (including the diaphragm coupling) is adjusted, the dynamic balance adjusting piece can be conveniently and fixedly arranged in the first adjusting hole, and the dynamic balance of the whole rotating system is adjusted. Therefore, the whole rotating system achieves dynamic balance.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, and particularly relates to a diaphragm coupling. Background Art

[0002] A diaphragm coupling (also known as a diaphragm coupling joint) is a mechanical component used to connect two rotating shafts, and it can compensate for axial, radial, and angular misalignments. Due to its characteristics such as compact structure, high torque transmission efficiency, and simple maintenance, the diaphragm coupling is widely used in various industrial applications. The following are some common structural components of the diaphragm coupling:

[0003] Diaphragm: This is the core component of the coupling, usually made of metal sheets (such as stainless steel, aluminum alloy, or other high-strength materials), and its shape is similar to a circle composed of multiple fan-shaped parts. The number of diaphragms is usually 3 to 10, and they compensate for the misalignment of the shafts through elastic deformation.

[0004] Bushings: Bushings are components that connect the diaphragms and the main shafts, and they are usually fixed on the shafts through keyways or fasteners.

[0005] In high-speed rotating applications, even a tiny imbalance may result in excessive centrifugal force, thereby causing vibration, noise, and premature wear of the bearings. In this case, the entire rotating system (including the coupling) needs to be dynamically balanced. In equipment that requires high precision and low vibration, such as precision instruments or high-precision machinery, dynamic balancing becomes particularly important. As part of the rotating system, the diaphragm coupling also needs to be dynamically balanced together with other components.

[0006] In the prior art, when adjusting the dynamic balance of the entire rotating system (including the coupling), the dynamic balance adjustment is often carried out on the main shaft. However, after the entire rotating system is assembled, the main shaft is often blocked, resulting in very cumbersome and inconvenient dynamic balance adjustment on the main shaft. And in the prior art, the dynamic balance adjustment can only be carried out at the main shaft end and cannot be carried out at the motor end. Summary of the Utility Model

[0007] The technical problem to be solved by the utility model is to overcome the defects in the prior art and provide a diaphragm coupling.

[0008] The utility model solves the above technical problem through the following technical solutions:

[0009] A diaphragm coupling, characterized by comprising:

[0010] The first bushing includes a first connecting portion and a first collar provided at one end of the first connecting portion. The first collar is a regular circular ring, and a plurality of first adjusting holes extending in the radial direction of the first collar are formed in the first collar. The first adjusting holes are evenly distributed along the circumferential direction of the collar.

[0011] The first expansion ring is sleeved on the first connecting portion and is coaxially arranged with the first collar.

[0012] The connecting shaft;

[0013] The first flange is installed at one end of the connecting shaft and is coaxially arranged with the first collar.

[0014] The first diaphragm is installed between the first flange and the first collar.

[0015] In some embodiments, it further includes:

[0016] The second bushing includes a second connecting portion and a second collar provided at one end of the second connecting portion. The second collar is a regular circular ring, and a plurality of second adjusting holes extending in the radial direction of the second collar are formed in the second collar. The second adjusting holes are evenly distributed along the circumferential direction of the collar.

[0017] The second expansion ring is sleeved on the second connecting portion and is coaxially arranged with the second collar.

[0018] The second flange is installed at the other end of the connecting shaft and is coaxially arranged with the second collar.

[0019] The second diaphragm is installed between the second flange and the second collar.

[0020] In some embodiments, it further includes:

[0021] The first dynamic balance adjusting member is detachably installed in the first adjusting hole;

[0022] The second dynamic balance adjusting member is detachably installed in the second adjusting hole.

[0023] In some embodiments, the fan-shaped area between the connecting lines of any two of the first adjusting holes and the center of the first collar is the first balance area. By setting the first dynamic balance adjusting member in one or two of the first adjusting holes and controlling the depth of the first dynamic balance adjusting member in the first adjusting hole, the dynamic balance of the first balance area is adjusted.

[0024] And / or, a sector area between the connecting lines of any two of the second adjustment holes and the center of the second collar is a second balance area. By arranging the second dynamic balance adjustment member in one or both of the second adjustment holes and controlling the depth of the second dynamic balance adjustment in the second adjustment hole, the dynamic balance of the second balance area is adjusted.

[0025] In some embodiments, the included angle between the connecting lines of two adjacent first adjustment holes and the center of the first collar is 30 degrees.

[0026] In some embodiments, the included angle between the connecting lines of two adjacent second adjustment holes and the center of the second collar is 30 degrees.

[0027] In some embodiments, internal threads are provided in the first adjustment holes, and external threads matching the internal threads are provided on the first dynamic balance adjustment members.

[0028] And / or, internal threads are provided in the second adjustment holes, and external threads matching the internal threads are provided on the second dynamic balance adjustment members.

[0029] In some embodiments, the first shaft sleeve and the second shaft sleeve have the same specifications, and / or the first adjustment holes and the second adjustment holes have the same dimensions, and / or the first dynamic balance adjustment members and the second dynamic balance adjustment members have the same specifications, and / or the first expansion rings and the second expansion rings have the same specifications, and / or the first flange and the second flange have the same specifications, and / or the first diaphragm and the second diaphragm have the same specifications.

[0030] In some embodiments, the first adjustment holes are M5 / M6 threaded holes, and the first dynamic balance adjustment members are screws that can be screwed into the M5 / M6 threaded holes.

[0031] In some embodiments, the second adjustment holes are M5 / M6 threaded holes, and the second dynamic balance adjustment members are screws that can be screwed into the M5 / M6 threaded holes.

[0032] Based on common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0033] The positive and progressive effects of the present utility model are as follows: When the diaphragm coupling of the present utility model is connected to the main shaft, it is necessary to lock the fastening screws. Therefore, an installation window must be provided at the corresponding position of the diaphragm coupling. Therefore, after the diaphragm coupling of the present utility model and other components of the rotating system are installed, the shaft collar of the diaphragm coupling will surely be exposed within the installation window. Thus, when adjusting the dynamic balance of the entire rotating system (including the diaphragm coupling), it is very convenient to fixedly arrange a dynamic balance adjusting member within the first adjusting hole so that the entire rotating system reaches dynamic balance. Moreover, in the present utility model, the first shaft collar is a regular circular ring, which can make the weight distribution of the shaft sleeve more uniform and also facilitate the uniform distribution of the first adjusting holes along the circumferential direction of the shaft collar, thereby making it more convenient to adjust the dynamic balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 FIG. is a schematic structural diagram of a diaphragm coupling according to a preferred embodiment of the present utility model.

[0035] Figure 2 is Figure 1 a partial enlarged view of part A in FIG.

[0036] Figure 3 FIG. is a schematic structural diagram of the first shaft sleeve.

[0037] Figure 4 is Figure 1 a partial enlarged view of part B in FIG.

[0038] DESCRIPTION OF THE REFERENCE NUMERALS:

[0039] First shaft sleeve 1

[0040] First connecting portion 11

[0041] First shaft collar 12

[0042] First adjusting hole 121

[0043] First expansion ring

[0044] Connecting shaft 3

[0045] First flange 4

[0046] First diaphragm 5

[0047] Second shaft sleeve 6

[0048] Second connecting portion 61

[0049] Second shaft collar 62

[0050] Second adjusting hole 621

[0051] Second expansion ring 7

[0052] Second flange 8

[0053] The second diaphragm 9

[0054] The fastening screw 10 Specific embodiments

[0055] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0056] It should be noted that in the claims and specifications of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0057] As Figures 1-4 shown, this embodiment discloses a diaphragm coupling, which includes a first shaft sleeve 1, a first expansion ring 2, a connecting shaft 3, a first flange 4 and a first diaphragm 5.

[0058] The first shaft sleeve 1 includes an integrally formed first connecting portion 11 and a first shaft ring 12 provided at one end of the first connecting portion 11. The first shaft ring 12 is a regular circular ring. A plurality of first adjustment holes 121 extending in the radial direction of the first shaft ring 12 are provided on the first shaft ring 12. The first adjustment holes 121 are evenly distributed along the circumferential direction of the shaft ring. The shaft is a regular circular ring, that is, the cross-section of the shaft ring is a perfect circle without irregular shapes or protrusions. In this embodiment, the first shaft sleeve 1 is used to connect to the main shaft. The first expansion ring 2 is sleeved on the first connecting portion 11 and is coaxially arranged with the first shaft ring 12. The first flange 4 is installed at one end of the connecting shaft 3 and is coaxially arranged with the first shaft ring 12. The first diaphragm 5 is installed between the first flange 4 and the first shaft ring 12.

[0059] When the diaphragm coupling is connected to the main shaft, the fastening screw 10 needs to be locked. Therefore, an installation window must be provided at the corresponding position of the diaphragm coupling in this embodiment. Therefore, after the diaphragm coupling of this embodiment and other components of the rotating system are installed, the collar of the diaphragm coupling will surely be exposed within the installation window. Thus, when adjusting the dynamic balance of the entire rotating system (including the diaphragm coupling), the dynamic balance adjusting member can be conveniently fixedly arranged within the first adjusting hole 121 to make the entire rotating system achieve dynamic balance. However, the dynamic balance adjusting member is not essential for the diaphragm coupling of this embodiment. If the entire rotating system happens to not require dynamic balance adjustment after the diaphragm coupling of this embodiment and other components of the rotating system are installed, then there is no need to set up the dynamic balance adjusting member. Moreover, in this embodiment, the first collar 12 is a regular circular ring, which can make the weight distribution of the shaft sleeve more uniform and is also convenient for evenly distributing the first adjusting holes 121 along the circumferential direction of the collar, thereby making it more convenient to adjust the dynamic balance.

[0060] Furthermore, the diaphragm coupling of this embodiment further includes a second shaft sleeve 6, a second expansion ring 7, a second flange 8, and a second diaphragm 9.

[0061] The second shaft sleeve 6 includes an integrally formed second connecting portion 61 and a second collar 62 provided at one end of the second connecting portion 61. The second collar 62 is a regular circular ring, and a plurality of second adjusting holes 621 extending in the radial direction of the second collar 62 are formed on the second collar 62. The second adjusting holes 621 are evenly distributed along the circumferential direction of the collar. The second expansion ring 7 is sleeved on the second connecting portion 61 and is coaxially arranged with the second collar 62. The second flange 8 is installed at the other end of the connecting shaft 3 and is coaxially arranged with the second collar 62. The second diaphragm 9 is installed between the second flange 8 and the second collar 62.

[0062] In this embodiment, with the above structural form, not only can the dynamic balance adjustment be carried out at the main shaft end of the entire rotating system, but also the dynamic balance adjustment can be carried out at the motor end. The user can flexibly choose to perform the dynamic balance adjustment at one of them according to needs, or can also perform the dynamic balance adjustment at both places simultaneously, and the selection is more diverse.

[0063] Furthermore, the diaphragm coupling of this embodiment further includes a first dynamic balance adjusting member and a second dynamic balance adjusting member. The first dynamic balance adjusting member is detachably installed in the first adjusting hole 121. The second dynamic balance adjusting member is detachably installed in the second adjusting hole 621.

[0064] As described above, the dynamic balance adjusting members (including the first dynamic balance adjusting member and the second dynamic balance adjusting member) are not essential for the diaphragm coupling of this embodiment. The adjusting holes provided on the collar of the coupling of this embodiment facilitate the installation of the dynamic balance adjusting members to adjust the dynamic balance, but it does not mean that the diaphragm coupling of this embodiment must be equipped with dynamic balance adjusting members at the same time. In this embodiment, the provision of the dynamic balance adjusting members enables customers not to prepare the dynamic balance adjusting members by themselves, which is more convenient for users.

[0065] In this embodiment, the fan-shaped area between the connecting lines of the centers of any two first adjusting holes 121 and the first collar 12 is the first balance area. By setting the first dynamic balance adjusting member in one or both of the first adjusting holes 121 and controlling the depth of the first dynamic balance adjusting member in the first adjusting hole 121, the dynamic balance of the first balance area is adjusted.

[0066] The fan-shaped area between the connecting lines of the centers of any two second adjusting holes 621 and the second collar 62 is the second balance area. By setting the second dynamic balance adjusting member in one or both of the second adjusting holes 621 and controlling the depth of the second dynamic balance adjusting member in the second adjusting hole 621, the dynamic balance of the second balance area is adjusted.

[0067] Further, in this embodiment, the included angle between the connecting lines of the centers of two adjacent first adjusting holes 121 and the first collar 12 is 30 degrees. The included angle between the connecting lines of the centers of two adjacent second adjusting holes 621 and the second collar 62 is 30 degrees. That is, there are 12 equally spaced first adjusting holes 121 provided on the circumference (360 degrees) of the first collar 12, and there are 12 equally spaced second adjusting holes 621 provided on the circumference (360 degrees) of the second collar 62. Adopting the above structure not only enables the first adjusting holes 121 or the second adjusting holes 621 to avoid the original structures on the collar, but also can meet the requirements of dynamic balance adjustment with the minimum number of slots, saving the slotting cost and facilitating production and processing.

[0068] Further, in this embodiment, internal threads are provided in the first adjusting holes 121, and external threads matching the internal threads are provided on the first dynamic balance adjusting members. Internal threads are provided in the second adjusting holes 621, and external threads matching the internal threads are provided on the second dynamic balance adjusting members.

[0069] In this embodiment, the design of the internal threads of the first adjusting holes 121 and the second adjusting holes 621 enables the dynamic balance adjusting members (including the first dynamic balance adjusting member and the second dynamic balance adjusting member) to be fixed in the adjusting holes by screwing in, providing a fast and simple installation method. The threaded connection allows for fine adjustment of the position of the dynamic balance adjusting members to achieve more precise dynamic balance adjustment. The threaded connection provides good mechanical locking to ensure that the dynamic balance adjusting members remain stable in the rotating system and are not easily loosened.

[0070] Furthermore, in this embodiment, the first bushing 1 and the second bushing 6 have the same specifications, the first adjustment hole 121 and the second adjustment hole 621 have the same size, the first dynamic balance adjustment member and the second dynamic balance adjustment member have the same specifications, the first expansion ring 2 and the second expansion ring 7 have the same specifications, the first flange 4 and the second flange 8 have the same specifications, and the first diaphragm 5 and the second diaphragm 9 have the same specifications.

[0071] In this embodiment, the first bushing 1 and the second bushing 6 have the same specifications, and the related components such as the adjustment holes, dynamic balance adjustment members, expansion rings, flanges, and diaphragms also have the same specifications. This design enables the components to form a symmetric structure in the rotating system, which helps to reduce the unbalanced force caused by the asymmetric mass distribution.

[0072] In this embodiment, the first adjustment hole 121 is an M5 / M6 threaded hole, and the first dynamic balance adjustment member is a screw that can be screwed into the M5 / M6 threaded hole. The second adjustment hole 621 is an M5 / M6 threaded hole, and the second dynamic balance adjustment member is a screw that can be screwed into the M5 / M6 threaded hole.

[0073] In this embodiment, the first adjustment hole 121 and the second adjustment hole 621 are M5 / M6 threaded holes, and the corresponding dynamic balance adjustment members are various types of screws that can be screwed into these threaded holes. The screws can be fully screwed into the adjustment holes or partially exposed from the adjustment holes. In this embodiment, adopting the above structural form not only facilitates production and processing, but also enables the dynamic balance adjustment members to be easily compatible with existing fasteners and tools by using standard M5 / M6 threaded holes, simplifying the installation and maintenance processes. The threaded connection allows for precise adjustment of the position of the dynamic balance adjustment members to achieve fine dynamic balance adjustment. The screws can be quickly screwed into the threaded holes, improving the installation efficiency and reducing the assembly time.

Claims

1. A diaphragm coupling, characterized in that, Comprising: A first bushing, including a first connecting portion and a first collar provided at one end of the first connecting portion. The first collar is a regular circular ring, and a plurality of first adjusting holes extending in the radial direction of the first collar are provided on the first collar. The first adjusting holes are evenly distributed along the circumferential direction of the collar; A first expansion ring, sleeved on the first connecting portion and coaxially arranged with the first collar; A connecting shaft; A first flange, installed at one end of the connecting shaft and coaxially arranged with the first collar; A first diaphragm, installed between the first flange and the first collar.

2. The diaphragm coupling according to claim 1, characterized in that, Further comprising: A second bushing, including a second connecting portion and a second collar provided at one end of the second connecting portion. The second collar is a regular circular ring, and a plurality of second adjusting holes extending in the radial direction of the second collar are provided on the second collar. The second adjusting holes are evenly distributed along the circumferential direction of the collar; A second expansion ring, sleeved on the second connecting portion and coaxially arranged with the second collar; A second flange, installed at the other end of the connecting shaft and coaxially arranged with the second collar; A second diaphragm, installed between the second flange and the second collar.

3. The diaphragm coupling according to claim 2, characterized in that, Further comprising: A first dynamic balance adjusting member, detachably installed in the first adjusting hole; A second dynamic balance adjusting member, detachably installed in the second adjusting hole.

4. The diaphragm coupling according to claim 3, characterized in that, The sector area between the connecting lines of any two of the first adjusting holes and the center of the first collar is the first balance area. By setting the first dynamic balance adjusting member in one or two of the first adjusting holes and controlling the depth of the first dynamic balance adjusting member in the first adjusting hole, the dynamic balance of the first balance area is adjusted; And / or, the sector area between the connecting lines of any two of the second adjusting holes and the center of the second collar is the second balance area. By setting the second dynamic balance adjusting member in one or two of the second adjusting holes and controlling the depth of the second dynamic balance adjusting member in the second adjusting hole, the dynamic balance of the second balance area is adjusted.

5. The diaphragm coupling according to claim 1, wherein The included angle between the connecting lines of two adjacent first adjusting holes and the center of the first collar is 30 degrees.

6. The diaphragm coupling according to claim 2, wherein The included angle between the connecting lines of two adjacent second adjusting holes and the center of the second collar is 30 degrees.

7. The diaphragm coupling according to claim 3, wherein Internal threads are provided in the first adjusting hole, and external threads matching the internal threads are provided on the first dynamic balance adjusting member; And / or, internal threads are provided in the second adjusting hole, and external threads matching the internal threads are provided on the second dynamic balance adjusting member.

8. The diaphragm coupling according to claim 3, wherein, The first bushing and the second bushing have the same specifications, and / or, the first adjusting hole and the second adjusting hole have the same dimensions, and / or, the first dynamic balance adjusting member and the second dynamic balance adjusting member have the same specifications, and / or, the first expansion ring and the second expansion ring have the same specifications, and / or, the first flange and the second flange have the same specifications, and / or, the first diaphragm and the second diaphragm have the same specifications.

9. The diaphragm coupling according to claim 3, characterized in that, The first adjusting hole is an M5 / M6 threaded hole, and the first dynamic balance adjusting member is a screw that can be screwed into the M5 / M6 threaded hole.

10. The diaphragm coupling according to claim 3, wherein, The second adjustment hole is an M5 / M6 threaded hole, and the second dynamic balance adjustment part is a screw that can be screwed into the M5 / M6 threaded hole.

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