Annular diaphragm, flange and transmission connection assembly

Abstract

An annular diaphragm (1). The annular diaphragm comprises a diaphragm body (11), wherein a diaphragm corrugated skirt structure is formed at the radial end of the diaphragm body, the diaphragm corrugated skirt structure comprises diaphragm skirt protrusions (163) and diaphragm skirt recesses (164), and the diaphragm skirt recesses and the diaphragm skirt protrusions are alternately arranged along the circumferential direction of the diaphragm body. A driving object and / or a driven object can be transmittingly connected to the annular diaphragm by means of the diaphragm corrugated skirt structure. The annular diaphragm solves the problems in the prior art that when the diaphragm is connected to the flange by welding, disassembly for maintenance cannot be achieved, and when the diaphragm is made of a high‑strength material, the material strength at weld seams is low. Further provided are a flange and a transmission connection assembly.

Description

Annular diaphragm plate, flange and transmission connection assembly TECHNICAL FIELD

[0001] The present application belongs to the technical field of transmission, and particularly relates to an annular diaphragm plate, a flange and a transmission connection assembly. BACKGROUND

[0002] The diaphragm plate coupling is widely used in mechanical transmission, but the connection between the existing diaphragm plate and flange plate is a weak link. The commonly used pin hole and bolt connection mode is prone to stress concentration near the pin hole. The stress near the pin hole can be three times or even more than the stress at other positions of the diaphragm plate, which undoubtedly has a great impact on the safety of the diaphragm plate coupling and the carrying capacity per unit volume. Some people propose to use welding to connect the diaphragm plate and the flange plate, but the welding method also has great defects, such as the welded structure cannot be disassembled, and if an individual part fails, the entire device can only be scrapped. In addition, the diaphragm plate made of high-strength material is often difficult to weld, and after welding, it is prone to cracking or the material strength at the weld is greatly reduced, which is contrary to improving the safety of the coupling and increasing the power density. Therefore, it is of great practical significance to design a mechanical connection mode that almost does not produce local stress concentration for improving the performance of the diaphragm plate coupling. SUMMARY

[0003] In view of this, the present application provides an annular diaphragm plate, a flange and a transmission connection assembly to solve the problems of local stress concentration and reduced carrying capacity of the diaphragm plate when the pin hole and bolt connection mode is used to connect the diaphragm plate and the flange plate, and the problems of being unable to disassemble and repair when the welding method is used to connect the diaphragm plate and the flange plate, and the problem of low material strength at the weld when the diaphragm plate is made of high-strength material.

[0004] The present application provides an annular diaphragm plate, which comprises a diaphragm plate body, and a diaphragm plate corrugated skirt structure is formed at one end of the diaphragm plate body in the radial direction, and the diaphragm plate corrugated skirt structure is used for transmission connection with a transmission object and / or a driven object.

[0005] The diaphragm plate corrugated skirt structure alternately comprises diaphragm plate skirt convex portions and diaphragm plate skirt concave portions in the circumferential direction of the diaphragm plate body; wherein the diaphragm plate skirt convex portions protrude towards one side of the diaphragm plate body in the axial direction, and the diaphragm plate skirt concave portions are recessed towards the other side of the diaphragm plate body in the axial direction.

[0006] The protrusion height of the diaphragm plate skirt convex portions and the recess depth of the diaphragm plate skirt concave portions gradually decrease towards the diaphragm plate body in the radial direction of the diaphragm plate body, respectively.

[0007] Further optionally, on any axial side of the diaphragm plate body, the convex surface of the diaphragm plate skirt convex portion and the concave surface of the diaphragm plate skirt concave portion gradually and smoothly transition to the corresponding axial side surface of the diaphragm plate body in the radial direction of the diaphragm plate body, respectively.

[0008] Further optionally, on a circumferential section of the membrane disc wave-shaped skirt structure, the membrane disc skirt convex part is formed with a membrane disc skirt convex part circumferential contour line, and the membrane disc skirt concave part is formed with a membrane disc skirt concave part circumferential contour line.

[0009] In the case that the circumferential section of the membrane disc wave-shaped skirt structure is unfolded as a plane, the membrane disc skirt convex part circumferential contour line and the membrane disc skirt concave part circumferential contour line are both circular arcs, or one of the membrane disc skirt convex part circumferential contour line and the adjacent membrane disc skirt concave part circumferential contour line forms a periodic sinusoidal curve.

[0010] Wherein, the circumferential section of the membrane disc wave-shaped skirt structure is a circumferential section formed by cutting a cylindrical surface coaxially arranged with the membrane disc main body.

[0011] Further optionally, the membrane disc wave-shaped skirt structure comprises a first wave-shaped section and a second wave-shaped section in the radial direction of the membrane disc main body, the first wave-shaped section is arranged away from the membrane disc main body, and the second wave-shaped section is arranged close to the membrane disc main body.

[0012] In the direction from the first wave-shaped section to the second wave-shaped section, the wave height of the first wave-shaped section linearly decreases.

[0013] In the radial direction of the membrane disc main body, the second wave-shaped section and the first wave-shaped section are tangentially connected, and the second wave-shaped section and the membrane disc main body are both tangentially connected.

[0014] Further optionally, the membrane disc wave-shaped skirt structure is formed by drawing and stretching from one end of the radial direction of the membrane disc main body.

[0015] Further optionally, the membrane disc skirt convex part and the adjacent membrane disc skirt concave part are tangentially connected, and the included angle between the tangent plane A of the tangential connection of the two and the central plane of the membrane disc main body is α, the α at the radial end of the membrane disc main body satisfies: 20°≤α≤35°; and / or,

[0016] The included angle between the tangent plane B of the outer contour peak line of the membrane disc skirt convex part and the central plane of the membrane disc main body is β, the β satisfies: 4.5°≤β≤12°; wherein, in the axial direction of the membrane disc main body, the outer contour peak line of the membrane disc skirt convex part is arranged away from the central plane of the membrane disc main body, and the inner contour peak line of the membrane disc skirt convex part is arranged close to the central plane of the membrane disc main body.

[0017] Further optionally, the membrane disc wave-shaped skirt structure has a radial width W10 along the membrane disc body, the first wave segment has a radial width W11 along the membrane disc body, and the W10 and the W11 satisfy: 60%≤W11 / W10≤80%.

[0018] Further optionally, the membrane disc body includes a membrane disc radial inner edge and a membrane disc radial outer edge arranged in a radial direction of the membrane disc body, and the membrane disc wave-shaped skirt structure is formed at least at the membrane disc radial inner edge.

[0019] Further optionally, the membrane disc wave-shaped skirt structure formed at the membrane disc radial inner edge is a membrane disc wave-shaped inner skirt structure, the first wave segment of the membrane disc wave-shaped inner skirt structure is a first inner wave segment, and the second wave segment of the membrane disc wave-shaped inner skirt structure is a second inner wave segment.

[0020] The first inner wave segment, the second inner wave segment, and the membrane disc body are sequentially arranged from inside to outside along the radial direction of the membrane disc body, and the wave height of the first inner wave segment linearly decreases from inside to outside along the radial direction of the membrane disc body.

[0021] Further optionally, the membrane disc wave-shaped skirt structure formed at the membrane disc radial outer edge is a membrane disc wave-shaped outer skirt structure, the first wave segment of the membrane disc wave-shaped outer skirt structure is a first outer wave segment, and the second wave segment of the membrane disc wave-shaped outer skirt structure is a second outer wave segment.

[0022] The first outer wave segment, the second outer wave segment, and the membrane disc body are sequentially arranged from outside to inside along the radial direction of the membrane disc body, and the wave height of the first outer wave segment linearly decreases from outside to inside along the radial direction of the membrane disc body.

[0023] The application further provides a flange, which includes a flange disc and a shaft extension, the shaft extension is arranged at an axial end of the flange disc, the shaft extension includes a shaft extension body, the shaft extension body is formed with a shaft extension wave-shaped skirt structure, the shaft extension wave-shaped skirt structure is away from the flange disc and located at a radial end of the shaft extension body, and the shaft extension wave-shaped skirt structure has a structure matched with the membrane disc wave-shaped skirt structure in any one of the above.

[0024] The application further provides a flange, which includes a flange disc and a shaft extension, the shaft extension is arranged at an axial end of the flange disc, the shaft extension includes a shaft extension body, the shaft extension body is formed with a shaft extension wave-shaped skirt structure, the shaft extension wave-shaped skirt structure is away from the flange disc and located at a radial end of the shaft extension body, and the shaft extension wave-shaped skirt structure is used for driving connection with a driving object and / or a driven object.

[0025] The axial extension corrugated skirt structure is alternately formed with axial extension protrusions and axial extension recesses along the circumferential direction of the axial extension body; wherein the axial extension protrusions protrude to one axial direction of the axial extension body, and the axial extension recesses are recessed to the other axial direction of the axial extension body.

[0026] The axial extension protrusions and the axial extension recesses are gradually and smoothly connected to the axial extension body along the radial direction of the axial extension body.

[0027] Further optionally, the axial extension protrusions are formed with axial extension protrusion circumferential profile lines, and the axial extension recesses are formed with axial extension recess circumferential profile lines along the circumferential section of the axial extension corrugated skirt structure.

[0028] In the case that the circumferential section of the axial extension corrugated skirt structure is unfolded as a plane, the axial extension protrusion circumferential profile lines and the axial extension recess circumferential profile lines are both circular arcs, or one axial extension protrusion circumferential profile line and one adjacent axial extension recess circumferential profile line form a periodic sinusoidal curve.

[0029] The circumferential section of the axial extension corrugated skirt structure is formed by cutting a cylindrical surface coaxial with the axial extension body.

[0030] Further optionally, the axial extension corrugated skirt structure comprises a third corrugated section and a fourth corrugated section in the radial direction of the axial extension body, the third corrugated section is arranged away from the axial extension body, and the fourth corrugated section is arranged close to the axial extension body.

[0031] The corrugation height of the third corrugated section linearly decreases in the direction from the third corrugated section to the fourth corrugated section.

[0032] In the radial direction of the axial extension body, the third corrugated section and the fourth corrugated section are tangentially connected, and the third corrugated section and the axial extension body are tangentially connected.

[0033] Further optionally, the axial extension corrugated skirt structure is formed by cutting, pressure processing or electrical processing from one end of the axial extension body in the radial direction.

[0034] Further optionally, the axial extension protrusion and the adjacent axial extension recess are tangentially connected, and the included angle between the tangent plane C of the tangential connection of the axial extension protrusion and the axial extension recess and the central plane of the axial extension body is γ, and the γ satisfies: 20°≤γ≤35° at the radial end of the axial extension body.

[0035] Further optionally, the included angle between the tangent plane D passing through the outer contour peak line of the axial extension protrusion and the central plane of the axial extension body is θ, and the θ satisfies: 4.5°≤θ≤12°.

[0036] Wherein, along the axial direction of the shaft extension body, from the central surface of the shaft extension body to the shaft extension protrusion, the outer contour peak line of the shaft extension protrusion is arranged away from the central surface of the shaft extension body, and the inner contour peak line of the shaft extension recess is arranged close to the central surface of the shaft extension body.

[0037] Further optionally, the radial width of the shaft extension corrugated skirt structure along the shaft extension body is W20, the radial width of the third corrugated segment along the shaft extension body is W21, and the W20 and W21 satisfy: 60%≤W21 / W20≤80%.

[0038] Further optionally, the shaft extension body comprises a shaft extension radial inner edge and a shaft extension radial outer edge, and the shaft extension radial inner edge or the shaft extension radial outer edge is formed with the shaft extension corrugated skirt structure.

[0039] Further optionally, the shaft extension radial inner edge forms a shaft extension corrugated inner skirt structure, the third corrugated segment of the shaft extension corrugated inner skirt structure is a third inner corrugated segment, and the fourth corrugated segment of the shaft extension corrugated inner skirt structure is a fourth inner corrugated segment.

[0040] From the inside to the outside along the radial direction of the shaft extension body, the third inner corrugated segment, the fourth inner corrugated segment and the shaft extension body are sequentially arranged, and the corrugated height of the third inner corrugated segment linearly decreases from the inside to the outside along the radial direction of the shaft extension body.

[0041] Further optionally, the shaft extension radial outer edge forms a shaft extension corrugated outer skirt structure, the third corrugated segment of the shaft extension corrugated outer skirt structure is a third outer corrugated segment, and the fourth corrugated segment of the shaft extension corrugated outer skirt structure is a fourth outer corrugated segment.

[0042] From the outside to the inside along the radial direction of the shaft extension body, the third outer corrugated segment, the fourth outer corrugated segment and the shaft extension body are sequentially arranged, and the corrugated height of the third outer corrugated segment linearly decreases from the outside to the inside along the radial direction of the shaft extension body.

[0043] The application also provides a transmission connection assembly comprising an inner flange and any one of the annular membrane discs described above, wherein the inner flange is any one of the flanges described above.

[0044] The radial inner edge of the membrane disc body is formed with the membrane disc corrugated skirt structure, and the radial outer edge of the membrane disc body is formed with a membrane disc pin hole; the radial inner edge of the shaft extension body of the inner flange is formed with the shaft extension corrugated skirt structure.

[0045] The transmission connection assembly further comprises an outer flange, and the flange disc of the outer flange is formed with an outer flange pin hole.

[0046] The membrane disc wave-shaped skirt structure and the shaft extension wave-shaped skirt structure are matched, the membrane disc pin hole and the outer flange pin hole are matched, and then the annular membrane disc can be connected with the inner flange and the outer flange.

[0047] The application further provides a transmission connection assembly comprising the annular membrane disc and the flange.

[0048] The radial inner edge and the radial outer edge of the membrane disc body are formed with the membrane disc wave-shaped skirt structure, the radial inner edge of the membrane disc body is formed with the membrane disc wave-shaped inner skirt structure, and the radial outer edge of the membrane disc body is formed with the membrane disc wave-shaped outer skirt structure.

[0049] The flange comprises an inner flange and an outer flange, the radial inner edge of the shaft extension main body of the inner flange is formed with the shaft extension wave-shaped skirt structure, which is a shaft extension wave-shaped inner skirt structure, and the radial outer edge of the shaft extension main body of the outer flange is formed with the shaft extension wave-shaped skirt structure, which is a shaft extension wave-shaped outer skirt structure.

[0050] The membrane disc wave-shaped inner skirt structure and the shaft extension wave-shaped inner skirt structure are matched, the membrane disc wave-shaped outer skirt structure and the shaft extension wave-shaped outer skirt structure are matched, and then the annular membrane disc can be connected with the inner flange and the outer flange.

[0051] Compared with the prior art, the application has the following beneficial effects:

[0052] The annular membrane disc is formed with a membrane disc wave-shaped skirt structure, the membrane disc wave-shaped skirt structure comprises a membrane disc skirt convex part and a membrane disc skirt concave part, and the membrane disc skirt concave part and the membrane disc skirt convex part are alternately arranged along the circumference of the membrane disc body; the transmission object and / or the driven object can be connected with the annular membrane disc through the membrane disc wave-shaped skirt structure; stress concentration is not generated at the connection position, the safety, the power density and the service life of the annular membrane disc are greatly improved; when the membrane disc and the flange are connected through the wave-shaped skirt structure, the maximum stress at the connection position of the membrane disc and the flange can be reduced to about 1 / 3 of the maximum stress at the connection position of the membrane disc and the flange when the membrane disc and the flange are connected through a pin hole and a bolt with a pin; the structure is detachable and has low maintenance cost; the problems of local stress concentration and reduced bearing capacity of the membrane disc when the membrane disc and the flange are connected through a pin hole and a bolt with a pin in the prior art are solved, and the problems of being unable to be disassembled and maintained when the membrane disc and the flange are connected through welding and low material strength at the welding position when the membrane disc is made of high-strength material in the prior art are solved. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0054] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions that the present application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0055] Fig. 1a, Fig. 1b and Fig. 1c are schematic structural diagrams of embodiments of the annular membrane disc provided by the present application, in which a membrane disc corrugated skirt structure is formed at the radial inner edge of the membrane disc, and a membrane disc pin hole is formed at the radial outer edge of the membrane disc;

[0056] Fig. 1d is a front view of the inner cylindrical development surface in Fig. 1c;

[0057] Fig. 1e is an enlarged view of the annular membrane disc provided by the present application at the radial inner edge of the membrane disc;

[0058] Fig. 2a and Fig. 2b are schematic structural diagrams of embodiments of the annular membrane disc provided by the present application, in which a membrane disc corrugated skirt structure is formed at both the radial inner edge and the radial outer edge of the membrane disc;

[0059] Fig. 2c is an enlarged view of A in Fig. 2b;

[0060] Fig. 3 is an enlarged view of the annular membrane disc provided by the present application at the radial outer edge of the membrane disc;

[0061] Fig. 4a is a schematic structural diagram of an embodiment of the inner flange provided by the present application;

[0062] Fig. 4b is an enlarged view of B in Fig. 4a;

[0063] Fig. 5 is a schematic structural diagram of an embodiment of the compression ring provided by the present application;

[0064] Fig. 6a is a schematic structural diagram of an embodiment of the assembly of the compression bolt, the compression ring, the annular membrane disc and the inner flange provided by the present application;

[0065] Fig. 6b is a schematic structural diagram of a cross-sectional view of an embodiment of the compression bolt, the compression ring, the annular membrane disc and the inner flange provided by the present application;

[0066] Fig. 6c and Fig. 6d are schematic diagrams of the exploded structure of the embodiments of the compression bolt, the compression ring, the annular diaphragm disc and the inner flange provided by the present application;

[0067] Fig. 7 is a finite element analysis nephogram of the annular diaphragm disc provided by the present application, in which the diaphragm disc corrugated skirt structure is formed at the radial inner edge of the diaphragm disc and the diaphragm disc pin hole is formed at the radial outer edge of the diaphragm disc;

[0068] Fig. 8a is a finite element analysis nephogram of the annular diaphragm disc provided by the present application, in which the diaphragm disc pin hole is formed at both the radial inner edge and the radial outer edge of the diaphragm disc;

[0069] Fig. 8b is a finite element analysis nephogram in the X direction of the annular diaphragm disc provided by the present application, in which the diaphragm disc pin hole is formed at both the radial inner edge and the radial outer edge of the diaphragm disc;

[0070] Fig. 8c is a finite element analysis nephogram at the radial inner edge of the annular diaphragm disc provided by the present application, in which the diaphragm disc pin hole is formed at both the radial inner edge and the radial outer edge of the diaphragm disc;

[0071] In the figures: 1-annular diaphragm disc; 11-diaphragm disc body; 111-first axial side; 12-diaphragm disc radial inner edge; 13-diaphragm disc radial outer edge; 131-positioning hole; 132-diaphragm disc pin hole; 14-diaphragm disc corrugated inner skirt structure; 141-first inner corrugated section; 142-second inner corrugated section; 15-diaphragm disc corrugated outer skirt structure; 151-first outer corrugated section; 152-second outer corrugated section; 161-diaphragm disc skirt convex portion circumferential contour line; 162-diaphragm disc skirt concave portion circumferential contour line; 163-diaphragm disc skirt convex portion; 164-diaphragm disc skirt concave portion; 165-convex surface; 166-concave surface; 171-inner cylindrical surface; 172-inner cylindrical developed surface; 181-cutting plane A; 182-cutting plane B; 183-central plane of the diaphragm disc body; 3-inner flange; 31-inner flange disc; 32-axial extension body of the inner flange; 33-axial extension corrugated inner skirt structure; 341-axial extension convex portion; 342-axial extension concave portion; 35-compression thread; 41-compression ring; 42-compression bolt; 43-diaphragm disc set. DETAILED DESCRIPTION

[0072] The embodiments of the present application are described below by specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0073] The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "and / or," "at least one of," and "one or more of" as used herein refer to and encompass any one of or any combination of any number of the listed items. Additionally, the term "comprises" and variations thereof such as "comprising" and "comprises" as used herein are used in their open-ended sense to encompass a wide variety of compositions and methods, and do not exclude additional unrecited elements or method steps.

[0074] It should also be understood that, whether or not explicitly stated in the specification, the use of the term "comprising" in the claims to describe various embodiments of the application is open-ended. It is intended to encompass "consisting of" and "consisting essentially of" embodiments as well as the embodiments explicitly recited in the claims.

[0075] It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. It is also possible in the present application that at least some of the devices, components, steps, and / or functions could be changed, eliminated, or added.

[0076] In the prior art, when a pin hole and a bolt with a pin are used to connect a membrane disc and a flange disc, stress concentration phenomenon is prone to occur near the pin hole, resulting in reduced safety and unit volume carrying capacity of the membrane disc coupling; when a welding method is used to connect the membrane disc and the flange disc, the welding structure cannot be disassembled, and if individual parts have a problem, the entire device can only be scrapped; the membrane disc made of high-strength material is often difficult to weld, and after welding, the material strength at the weld is greatly reduced or the membrane disc is cracked;

[0077] The application creatively provides a ring-shaped membrane disc, which comprises a membrane disc body, and a membrane disc corrugated skirt structure is formed at one end of the membrane disc body in the radial direction; the membrane disc corrugated skirt structure comprises a membrane disc skirt convex part and a membrane disc skirt concave part, and the membrane disc skirt concave part and the membrane disc skirt convex part are alternately arranged along the circumference of the membrane disc body; a transmission object and / or a driven object can be connected with the ring-shaped membrane disc through the membrane disc corrugated skirt structure; stress concentration does not occur at the connection position, and the safety, power density and service life of the ring-shaped membrane disc are greatly improved; the ring-shaped membrane disc is detachable, and the maintenance cost is low.

[0078] Embodiment 1

[0079] As shown in FIGS. 1a-3, the present embodiment provides a ring-shaped film disc 1, which comprises a film disc body 11, and a film disc corrugated skirt structure is formed at a radial end of the film disc body 11 and is used for driving connection with a driving object and / or a driven object; the film disc corrugated skirt structure is formed by calendering and stretching of the radial end of the film disc body 11;

[0080] The film disc corrugated skirt structure is alternately formed with film disc skirt convex portions 163 and film disc skirt concave portions 164 along the circumference of the film disc body 11, the film disc skirt convex portions 163 protrude to one axial side of the film disc body 11, and the film disc skirt concave portions 164 are recessed to the other axial side of the film disc body 11; specifically, the film disc skirt convex portions 163 and the film disc skirt concave portions 164 are both provided in plurality, the plurality of film disc skirt convex portions 163 are arranged at intervals along the circumference of the film disc body 11, and the plurality of film disc skirt concave portions 164 are arranged at intervals along the circumference of the film disc body 11; the plurality of film disc skirt concave portions 164 and the plurality of film disc skirt convex portions 163 are arranged alternately in concave-convex along the circumference of the film disc body 11, and the film disc skirt convex portions 163 and the adjacent film disc skirt concave portions 164 are tangentially connected;

[0081] The protrusion height H of the film disc skirt convex portions 163 and the recess depth h of the film disc skirt concave portions 164 gradually decrease along the radial direction of the film disc body 11 respectively to the film disc body 11; wherein the protrusion height H of the film disc skirt convex portions 163 is the distance between any point on the film disc skirt convex portions 163 and the center surface 183 of the film disc body, and the recess depth h of the film disc skirt concave portions 164 is the distance between any point on the film disc skirt concave portions 164 and the center surface 183 of the film disc body;

[0082] Preferably, on any axial side of the film disc body 11, the convex surface 165 of the film disc skirt convex portions 163 and the concave surface 166 of the film disc skirt concave portions 164 gradually and smoothly transition to the corresponding axial side surface of the film disc body 11 along the radial direction of the film disc body 11 respectively; that is, the film disc skirt convex portions 163 and the film disc skirt concave portions 164 gradually and continuously extend along the radial direction of the film disc body 11 respectively; specifically, the axial direction of the film disc body 11 includes oppositely arranged first axial side a and second axial side a', and the axial side surface of the film disc body 11 includes first axial side surface 111 corresponding to the first axial side a and second axial side surface corresponding to the second axial side a'; on the first axial side a, the convex surface 165 of the film disc skirt convex portions 163 gradually and smoothly transitions to the first axial side surface 111 along the radial direction of the film disc body 11, and the concave surface 166 of the film disc skirt concave portions 164 gradually and smoothly transitions to the first axial side surface 111 along the radial direction of the film disc body 11; on the second axial side a', the convex surface of the film disc skirt convex portions 163 gradually and smoothly transitions to the second axial side surface along the radial direction of the film disc body 11, and the concave surface 166 of the film disc skirt concave portions 164 gradually and smoothly transitions to the second axial side surface along the radial direction of the film disc body 11.

[0083] It should be noted that the film disc corrugated skirt structure is a detachable connection structure for transmission connection, when the annular film disc 1 is in transmission connection with a transmission object, the movement of the transmission object can be transmitted to the annular film disc 1; when the annular film disc 1 is in transmission connection with a driven object, the annular film disc 1 can transmit movement to the driven object; during transmission, the protrusion of the film disc body 11 can be elastically deformed; the film disc corrugated skirt structure is different from the common fixed connection structures such as welding, bolt connection, riveting, gluing and pin connection;

[0084] Specifically, the film disc body 11 is a flat plate as a whole, or the film disc body 11 includes an inner ring segment, a protrusion and an outer ring segment which are sequentially arranged and connected along the radial direction of the film disc body 11, the protrusion is an annular structure, the inner ring segment, the protrusion and the outer ring segment are coaxially arranged, and the protrusion is convex to one end of the film disc body 11 in the axial direction; the protrusion has elasticity, and when the outer ring segment and the inner ring segment are deflected, the protrusion deforms to adapt to the position change of the relative deflection of the outer ring segment and the inner ring segment; the protrusion adopts a pre-stretching structure, which can allow a larger angle difference and provide radial rigidity when the outer ring segment and the inner ring segment are all fixed; the protrusion is tangent to the outer ring segment and the inner ring segment, and the protrusion is a circular arc surface, a spline curve surface or a cosine curve surface; preferably, the protrusion, the outer ring segment and the inner ring segment have the same thickness, the protrusion, the outer ring segment and the inner ring segment are integrally formed, and the inner ring segment and the outer ring segment are in the same plane.

[0085] The specific structure of the film disc corrugated skirt structure can be viewed from the circumferential direction and the radial direction of the film disc body 11:

[0086] From the circumferential direction of the film disc body 11, on the circumferential section of the film disc corrugated skirt structure, the film disc skirt convex part 163 forms a film disc skirt convex part circumferential contour line 161, and the film disc skirt concave part 164 forms a film disc skirt concave part circumferential contour line 162;

[0087] The specific structure of the film disc skirt convex part circumferential contour line 161 and the film disc skirt concave part circumferential contour line 162 includes the following two cases, and one of the two cases can be selected in actual application:

[0088] ① In the case that the circumferential section of the film disc corrugated skirt structure is unfolded into a plane, the film disc skirt convex part circumferential contour line 161 and the film disc skirt concave part circumferential contour line 162 are both circular arc lines;

[0089] ② In the case that the circumferential section of the film disc corrugated skirt structure is unfolded into a plane, one film disc skirt convex part circumferential contour line 161 and an adjacent film disc skirt concave part circumferential contour line 162 constitute a periodic sine curve;

[0090] The circumferential section of the film disc corrugated skirt structure is a circumferential section formed by cutting the film disc corrugated skirt structure in a cylindrical surface coaxially arranged with the film disc body 11.

[0091] From the radial direction of the film disc body 11, the film disc corrugated skirt structure includes two different corrugated sections in the radial direction of the film disc body 11, which are respectively a first corrugated section and a second corrugated section, and the first corrugated section and the second corrugated section are integrally formed; wherein the first corrugated section is arranged away from the film disc body 11, and the second corrugated section is arranged close to the film disc body 11.

[0092] In the direction from the first corrugated section to the second corrugated section, the corrugated height of the first corrugated section linearly decreases, and the second corrugated section is in a circular arc shape; wherein in the first corrugated section, the corrugated height of the film disc convex part 163 is the convex height H of the film disc convex part 163, and the corrugated height of the film disc concave part 164 is the concave depth h of the film disc concave part 164.

[0093] In the radial direction of the film disc body 11, the second corrugated section and the first corrugated section are tangentially connected, and the second corrugated section and the film disc body 11 are tangentially connected.

[0094] The parameters related to the specific structure of the film disc skirt convex part 163 and the film disc skirt concave part 164 include α, β, δ and W11 / W10, α is a key parameter, which directly affects the service life and connection firmness of the annular film disc 1, β, δ and W11 / W10 affect the swing flexibility of the annular film disc 1 and the stress during forming; specifically:

[0095] ①The included angle between the tangent plane A181 where the film disc skirt convex part 163 and the adjacent film disc skirt concave part 164 are tangentially connected and the central plane 183 of the film disc body is α, and at the radial end of the film disc body, α satisfies: 20°≤α≤35°; reducing α can reduce the residual elongation rate at the radial edge of the annular film disc 1, which can avoid damage to the annular film disc 1 during stretching and use; increasing α can make the axial locking force required to clamp the annular film disc 1 smaller under the action of the same torque or radial force, which can firmly connect the annular film disc 1 with the flange and the compression ring 41;

[0096] ② The angle between the tangent plane B182 of the outer contour crest line of the diaphragm disc skirt protrusion 163 and the center plane 183 of the diaphragm disc body is β, where β satisfies: 4.5°≤β≤12°. Increasing β reduces the radial width of the corrugated skirt structure of the diaphragm disc, increases the radial width of the annular diaphragm disc 1 between the inner flange 3 and the outer flange when connected to the inner flange 3 and the outer flange, and improves the swing flexibility of the annular diaphragm disc 1 between the inner flange 3 and the outer flange. Decreasing β increases the radius of the second corrugated segment, which on the one hand reduces The stress during the forming of the annular diaphragm disc 1, on the other hand (when the annular diaphragm disc 1 needs to be connected to the flange or the clamping ring 41), expands the diameter range of the cutting tools used to process the flange or the clamping ring 41, thereby improving the efficiency of processing the flange or the clamping ring 41; wherein, along the axial direction of the diaphragm disc body 11, from the center surface 183 of the diaphragm disc body to the diaphragm disc skirt protrusion 163, the outer contour peak line of the diaphragm disc skirt protrusion 163 is set away from the center surface 183 of the diaphragm disc body, and the inner contour peak line of the diaphragm disc skirt protrusion 163 is set close to the center surface 183 of the diaphragm disc body;

[0097] ③ The angle between the tangent plane E of the outer contour trough line of the concave part of the membrane disc skirt and the center plane 183 of the membrane disc body is δ, where δ satisfies: 4.5°≤δ≤12°. Increasing δ reduces the radial width of the corrugated skirt structure of the membrane disc, increases the radial width of the annular membrane disc 1 between the inner flange 3 and the outer flange when connected to the inner flange 3 and the outer flange, and improves the swing flexibility of the annular membrane disc 1 between the inner flange 3 and the outer flange. Decreasing δ increases the radius of the arc of the second corrugated section, which on the one hand reduces the annular membrane... The stress during the forming of disc 1, on the other hand (when the annular diaphragm disc 1 needs to be connected to the flange and the clamping ring 41), expands the diameter range of the tools used to process the flange or the clamping ring 41, and improves the efficiency of processing the flange or the clamping ring 41; wherein, along the axial direction of the diaphragm disc body 11, from the center surface 183 of the diaphragm disc body to the diaphragm disc skirt recess 164, the outer contour trough line of the diaphragm disc skirt recess 164 is set away from the center surface 183 of the diaphragm disc body, and the inner contour trough line of the diaphragm disc skirt recess 164 is set close to the center surface 183 of the diaphragm disc body;

[0098] ④ The radial width of the corrugated skirt structure of the diaphragm disc along the diaphragm disc body 11 is W10, and the radial width of the first corrugated segment along the diaphragm disc body 11 is W11. W10 and W11 satisfy: 60% ≤ W11 / W10 ≤ 80%. Reducing W11 / W10 can increase the arc radius of the second corrugated segment. On the one hand, it can reduce the stress during the forming of the annular diaphragm disc 1. On the other hand, (when the annular diaphragm disc 1 needs to be connected with the flange or the clamping ring 41) it expands the diameter range of the tools used to process the flange or the clamping ring 41, thus improving the efficiency of processing the flange or the clamping ring 41. Increasing W11 / W10 can reduce the radial width of the corrugated skirt structure of the diaphragm disc, which can improve the swing flexibility of the annular diaphragm disc 1 between the inner flange 3 and the outer flange.

[0099] In addition, when α satisfies: 20°≤α≤35°, β satisfies: 4.5°≤β≤12° and / or δ satisfies: 4.5°≤δ≤12° and / or W10 / W11 satisfies: 60%≤W11 / W10≤80%, damage to the annular diaphragm 1 during stretching and use can be avoided, the annular diaphragm 1 can be firmly connected to the flange and the clamping ring 41, the swing flexibility of the annular diaphragm 1 between the inner flange 3 and the outer flange can be improved, and the stress during the molding of the annular diaphragm 1 can be reduced.

[0100] This embodiment also proposes that the membrane disk body 11 includes a radial inner edge 12 and a radial outer edge 13 of the membrane disk arranged radially opposite to each other along the membrane disk body 11, and a corrugated skirt structure of the membrane disk is formed on the radial inner edge 12 and / or the radial outer edge 13 of the membrane disk; that is, only the radial inner edge 12 of the membrane disk has a corrugated skirt structure, or only the radial outer edge 13 of the membrane disk has a corrugated skirt structure, or both the radial inner edge 12 and the radial outer edge 13 of the membrane disk have corrugated skirt structures.

[0101] In summary, this embodiment presents the overall layout and specific structure of the diaphragm disc corrugated skirt structure, and provides parameters related to the specific structure. The transmission connection is achieved through the diaphragm disc corrugated skirt structure, and no stress concentration occurs at the connection point, which greatly improves the safety, power density and lifespan of the annular diaphragm disc 1. It is detachable, has low maintenance costs, can reduce the stress during the molding of the annular diaphragm disc 1, can extend the service life of the annular diaphragm disc 1, and can make the annular diaphragm disc 1 firmly connected.

[0102] Example 2

[0103] Based on Example 1, only the inner radial edge 12 of the membrane disk has a corrugated skirt structure, which is a corrugated inner skirt structure 14; the first corrugated segment of the corrugated inner skirt structure 14 is the first inner corrugated segment 141, and the second corrugated segment of the corrugated inner skirt structure 14 is the second inner corrugated segment 142.

[0104] Along the radial direction of the membrane disk body 11 from the inside to the outside, the first inner corrugated section 141, the second inner corrugated section 142 and the membrane disk body 11 are arranged sequentially, and the second inner corrugated section 142 is tangentially connected to the first inner corrugated section 141 and the membrane disk body 11. The corrugation height of the first inner corrugated section 141 decreases linearly from the inside to the outside along the radial direction of the membrane disk body 11, and the second inner corrugated section 142 is arc-shaped from the inside to the outside along the radial direction of the membrane disk body 11.

[0105] The corrugated inner skirt structure 14 of the membrane disk is tangent to the inner cylindrical surface 171, which is coaxially arranged with the membrane disk body 11.

[0106] The line of intersection between a convex portion 163 of a membrane disc skirt and an inner cylindrical surface 171 is the circumferential contour line 161 of the convex portion of the membrane disc skirt on the unfolded plane of the inner cylindrical surface 171; the line of intersection between a concave portion 164 of a membrane disc skirt and an inner cylindrical surface 171 is the circumferential contour line 162 of the concave portion of the membrane disc skirt on the unfolded plane of the inner cylindrical surface 171.

[0107] Both the circumferential contour line 161 of the convex part of the membrane disc skirt and the circumferential contour line 162 of the concave part of the membrane disc skirt are arc-shaped, or a circumferential contour line 162 of a concave part of the membrane disc skirt and an adjacent circumferential contour line 161 of a convex part of the membrane disc skirt form a periodic sine curve.

[0108] The unfolded plane of the inner cylindrical surface 171 is referred to as the inner cylindrical unfolded surface 172.

[0109] In summary, this embodiment provides a specific structure of the corrugated inner skirt structure 14 of the membrane disk. The first inner corrugated segment 141, the second inner corrugated segment 142, and the membrane disk body 11 gradually and continuously extend from the inside to the outside along the radial direction of the membrane disk body 11. This reduces the stress during the molding of the annular membrane disk 1, while also giving the annular membrane disk 1 a certain degree of elasticity and a certain degree of swing flexibility during use, thus extending the service life of the annular membrane disk 1.

[0110] Finite element analysis was performed on the membrane disk body 11, where a corrugated inner skirt structure 14 is formed on the radial inner edge 12 and a pin hole 132 is formed on the radial outer edge 13. The geometric model is as follows: the inner diameter of the membrane disk is 39 mm, the radial width of the corrugated inner skirt structure 14 is 1.85 mm, there are 40 protrusions 163 and 164 on the membrane disk skirt, the thickness of the membrane disk body 11 is 0.1 mm, α = 26.552°, β = 6.558°, W11 / W10 = 70%, the radius of the rounded corner of the protrusion 163 is 4.86 mm, and the radius of the innermost arc of the first corrugated section is 1 mm. 7131mm (i.e., when the innermost circumferential section of the first corrugated segment is unfolded into a plane, the circumferential contour line 161 of the convex part of the membrane disk skirt and the circumferential contour line 162 of the concave part of the membrane disk skirt are both arcs, and the radius of the arc is 1.7131mm). The corrugated inner skirt structure 14 of the stamped membrane disk results in an elongation of 4.7% in the material, which is less than half of the elongation of the material of the annular membrane disk 1. The simulation conditions are set as follows: the deflection angle of the inner ring segment relative to the outer ring segment is 0.74°, and a torque of 56Nm and a radial force of 1520N are applied between the inner ring segment and the outer ring segment; the radial force is consistent with the relative tilt direction of the inner ring segment and the outer ring segment, that is, the common normal line perpendicular to the axis of the inner ring segment and the outer ring segment.

[0111] Figure 7 shows the cloud map obtained through mechanical finite element analysis. As can be seen from Figure 7, the maximum tensile stress of the membrane disk body 11 is 337.4 MPa, and the maximum stress at the corrugated inner skirt structure 14 of the membrane disk is 298.4 MPa.

[0112] Finite element analysis was performed on the diaphragm disc body 11, where both the radial inner edge 12 and radial outer edge 13 have diaphragm disc pin holes 132. The geometric model was set as follows: the inner diameter of the diaphragm disc body 11 was 44.7 mm, and the thickness of the diaphragm disc body 11 was 0.1 mm; the inner diameter of the flange connected to the radial inner edge 12 of the diaphragm disc body 11 was 32 mm, and the flange had 10 uniformly distributed flange pin holes; the diameters of the diaphragm disc pin holes 132 and the flange pin holes were both 4 mm. The simulation conditions were set as follows: the deflection angle of the inner ring segment relative to the outer ring segment was 0.74°, and a torque of 56 Nm and a radial force of 1520 N were applied between the inner and outer ring segments; the radial force was in the same direction as the relative tilt of the inner and outer ring segments, i.e., perpendicular to the common normal of the axes of the inner and outer ring segments.

[0113] Figures 8a, 8b and 8c are cloud maps obtained through mechanical finite element analysis. As shown in Figure 8a, the maximum tensile stress of the membrane disk body 11 is 1070 MPa, the maximum tensile stress of the membrane disk body 11 in the X direction is 730.0 MPa, and the maximum stress at the radial inner edge 12 of the membrane disk body 11 is 1070 MPa.

[0114] Therefore, it can be seen that the maximum stress when the radial inner edge 12 of the diaphragm disk body 11 forms the diaphragm disk corrugated inner skirt structure 14 is significantly less than the maximum stress when the radial inner edge 12 of the diaphragm disk body 11 forms the diaphragm disk pin hole 132. This reduces the stress from 1070 MPa to 298.4 MPa, which is less than 28% of the original stress. This significantly improves the stress characteristics of the diaphragm disk body 11 and increases the expected cycle life from tens of thousands of cycles to an infinite cycle life, thus meeting the design and usage requirements of reducers (especially reducers used in robots).

[0115] Example 3

[0116] Based on Example 1, only the outer radial edge 13 of the membrane disk has a corrugated skirt structure, which is called the corrugated outer skirt structure 15. The first corrugated segment of the corrugated outer skirt structure 15 is called the first outer corrugated segment 151, and the second corrugated segment of the corrugated outer skirt structure 15 is called the second outer corrugated segment 152.

[0117] Along the radial direction of the membrane disk body 11 from the outside to the inside, the first outer corrugated section 151, the second outer corrugated section 152 and the membrane disk body 11 are arranged sequentially, and the second outer corrugated section 152 is tangentially connected to the first outer corrugated section 151 and the membrane disk body 11. The corrugation height of the first outer corrugated section 151 decreases linearly from the outside to the inside along the radial direction of the membrane disk body 11, and the second outer corrugated section 152 is arc-shaped from the inside to the outside along the radial direction of the membrane disk body 11.

[0118] The corrugated outer skirt structure 15 of the membrane disk is tangent to the outer cylindrical surface that is coaxial with the membrane disk body 11;

[0119] The line of intersection between a protruding part 163 of a membrane disc skirt and the outer cylindrical surface is the circumferential contour line 161 of the protruding part of the membrane disc skirt on the unfolded plane of the outer cylindrical surface, and the line of intersection between a recessed part 164 of a membrane disc skirt and the outer cylindrical surface is the circumferential contour line 162 of the recessed part of the membrane disc skirt on the unfolded plane of the outer cylindrical surface.

[0120] Both the circumferential contour line 161 of the convex part of the membrane disc skirt and the circumferential contour line 162 of the concave part of the membrane disc skirt are arc-shaped, or a circumferential contour line 162 of a concave part of the membrane disc skirt and an adjacent circumferential contour line 161 of a convex part of the membrane disc skirt form a periodic sine curve.

[0121] The unfolded plane of the outer cylindrical surface is referred to as the unfolded surface of the outer cylinder.

[0122] In summary, this embodiment provides a specific structure of the corrugated outer skirt structure 15 of the membrane disk. The first outer corrugated segment 151, the second outer corrugated segment 152, and the membrane disk body 11 gradually and continuously extend from the outside to the inside along the radial direction of the membrane disk body 11. This reduces the stress during the molding of the annular membrane disk 1, while also giving the annular membrane disk 1 a certain degree of elasticity and a certain degree of swing flexibility during use, thus extending the service life of the annular membrane disk 1.

[0123] Example 4

[0124] Based on Embodiments 1, 2, and 3, both the radial inner edge 12 and the radial outer edge of the membrane disk are formed with a membrane disk corrugated skirt structure; the membrane disk corrugated skirt structure formed on the radial inner edge 12 is a membrane disk corrugated inner skirt structure 14, the first corrugated segment of the membrane disk corrugated inner skirt structure 14 is the first inner corrugated segment 141, and the second corrugated segment of the membrane disk corrugated inner skirt structure 14 is the second inner corrugated segment 142; along the radial direction of the membrane disk body 11 from the inside to the outside, the first inner corrugated segment 141, the second inner corrugated segment 142, and the membrane disk body 11 are arranged sequentially, and the second inner corrugated segment 142 is tangentially connected to the first inner corrugated segment 141 and the membrane disk body 11; the corrugation height of the first inner corrugated segment 141 decreases linearly from the inside to the outside along the radial direction of the membrane disk body 11;

[0125] The corrugated skirt structure formed by the outer radial edge 13 of the membrane disk is the corrugated outer skirt structure 15. The first corrugated segment of the corrugated outer skirt structure 15 is the first outer corrugated segment 151, and the second corrugated segment of the corrugated outer skirt structure 15 is the second outer corrugated segment 152. The first outer corrugated segment 151, the second outer corrugated segment 152, and the membrane disk body 11 are arranged sequentially from the outside to the inside along the radial direction of the membrane disk body 11. The second outer corrugated segment 152 is tangentially connected to the first outer corrugated segment 151. The corrugation height of the first outer corrugated segment 151 decreases linearly from the outside to the inside along the radial direction of the membrane disk body 11.

[0126] In summary, this embodiment provides the specific structures of the membrane disc corrugated inner skirt structure 14 and the membrane disc corrugated outer skirt structure 15. The first inner corrugated segment 141, the second inner corrugated segment 142, and the membrane disc body 11 gradually and continuously extend from the inside to the outside along the radial direction of the membrane disc body 11. The first outer corrugated segment 151, the second outer corrugated segment 152, and the membrane disc body 11 gradually and continuously extend from the outside to the inside along the radial direction of the membrane disc body 11. This reduces the stress during the molding of the annular membrane disc 1 and also gives the annular membrane disc 1 a certain degree of elasticity, allowing it to swing flexibly during use and extending the service life of the annular membrane disc 1.

[0127] Example 5

[0128] As shown in Figures 4a and 4b, this embodiment provides a flange, including a flange plate and a shaft extension, the shaft extension being disposed at one axial end of the flange plate; the shaft extension includes a shaft extension body, the shaft extension body forming a shaft extension corrugated skirt structure; the shaft extension corrugated skirt structure is located away from the flange plate and at one radial end of the shaft extension body; the shaft extension corrugated skirt structure has a structure that cooperates with the membrane disc corrugated skirt structure described in any one of embodiments 1 to 4;

[0129] The corrugated skirt structure of the diaphragm disc and the corrugated skirt structure of the shaft extension can be combined to achieve the connection between the annular diaphragm disc 1 and the flange.

[0130] Example 6

[0131] As shown in Figures 4a and 4b, this embodiment provides a flange, including a flange plate and a shaft extension, the shaft extension being disposed at one axial end of the flange plate; the shaft extension includes a shaft extension body, the shaft extension body forming a shaft extension corrugated skirt structure; the shaft extension corrugated skirt structure is located away from the flange plate and at one radial end of the shaft extension body; the shaft extension corrugated skirt structure is used for transmission connection with a transmission object and / or a transmitted object, the shaft extension corrugated skirt structure being formed from one radial end of the shaft extension body by cutting, pressure processing or electrical discharge machining;

[0132] The corrugated skirt structure of the shaft extension has alternating shaft extension protrusions 341 and shaft extension recesses 342 along the circumference of the shaft extension body; wherein, the shaft extension protrusions 341 protrude to one axial side of the shaft extension body, and the shaft extension recesses 342 are recessed to the other axial side of the shaft extension body; there are multiple shaft extension protrusions 341 and shaft extension recesses 342, and the multiple shaft extension recesses 342 and multiple shaft extension protrusions 341 are arranged alternately along the circumference of the shaft extension body;

[0133] The shaft extension protrusion 341 and the shaft extension recess 342 gradually and smoothly transition to the shaft extension body along the radial direction of the shaft extension body.

[0134] The specific structure of the corrugated skirt structure of the shaft extension can be viewed from two aspects: the circumferential and radial directions of the shaft extension body.

[0135] From the circumferential perspective of the shaft extension body, on the longitudinal section along the circumferential direction of the shaft extension corrugated skirt structure, the shaft extension protrusion 341 forms a circumferential contour line of the shaft extension protrusion, and the shaft extension recess 342 forms a circumferential contour line of the shaft extension recess.

[0136] The specific structures of the circumferential contour lines of the shaft extension protrusion and the circumferential contour lines of the shaft extension recess include the following two cases. In practical applications, either of these two cases can be selected:

[0137] ①When the circumferential section of the axially extended corrugated skirt structure is unfolded into a plane, the circumferential contour lines of the axially extended protrusion and the circumferential contour lines of the axially extended concave part are both arc lines.

[0138] ② When the circumferential section of the axially extended corrugated skirt structure is unfolded into a plane, the circumferential profile of an axially extended protrusion and the circumferential profile of an adjacent axially extended concave part form a periodic sine curve.

[0139] Among them, the circumferential section of the axial extension corrugated skirt structure is a circumferential section formed by cutting the axial extension corrugated skirt structure with a cylindrical surface coaxially set with the axial extension body;

[0140] From the circumferential direction of the shaft extension body, the corrugated skirt structure of the shaft extension body includes two different corrugated segments in the radial direction of the shaft extension body, namely the third corrugated segment and the fourth corrugated segment, which are integrally formed; wherein, the third corrugated segment is set away from the shaft extension body, and the fourth corrugated segment is set close to the shaft extension body;

[0141] Along the direction from the third corrugated segment to the fourth corrugated segment, the corrugation height of the third corrugated segment decreases linearly, while the fourth corrugated segment is arc-shaped.

[0142] In the radial direction of the shaft extension body, the third corrugated segment and the fourth corrugated segment are tangentially connected, and the third corrugated segment is tangentially connected to the shaft extension body.

[0143] Parameters related to the specific structure of the shaft extension protrusion 341 and shaft extension recess 342 include γ, θ, and W21 / W20. γ is a key parameter that directly affects the firmness of the connection between the shaft extension body and the annular diaphragm disk 1; specifically:

[0144] ① The shaft extension protrusion 341 and the adjacent shaft extension recess 342 are tangentially connected, and the angle between the tangential plane C connecting the two and the center plane of the shaft extension body is γ, which satisfies: 20°≤γ≤35°; reducing γ can reduce the residual elongation at the radial edge of the annular diaphragm disc that cooperates with the shaft extension body, and can avoid damage to the annular diaphragm disc 1 that cooperates with the shaft extension body during stretching and use; increasing γ can reduce the axial locking force required to clamp the annular diaphragm disc 1 under the same torque or radial force, and can make the annular diaphragm disc 1 firmly connected to the flange and the clamping ring 41;

[0145] ② The angle between the tangent plane D of the outer contour crest line of the shaft extension protrusion 341 and the center plane of the shaft extension body is θ, where θ satisfies: 4.5°≤θ≤12°; Increasing θ reduces the radial width of the corrugated skirt structure of the shaft extension, increases the radial width of the annular diaphragm 1 between the inner flange 3 and the outer flange when the annular diaphragm 1 is connected to the inner flange 3 and the outer flange, and improves the swing flexibility of the annular diaphragm 1 between the inner flange 3 and the outer flange; Decreasing β increases the radius of the arc of the second and fourth corrugated segments, on the one hand, it can The stress during the forming of the annular diaphragm 1 that mates with the shaft extension body is reduced. On the other hand, (when the annular diaphragm 1 needs to be connected to the flange or the clamping ring 41) the diameter range of the tools used to process the flange or the clamping ring 41 is expanded, thereby improving the efficiency of processing the flange or the clamping ring 41. In particular, along the axial direction of the shaft extension body, from the center surface of the shaft extension body to the shaft extension protrusion, the outer contour peak line of the shaft extension protrusion 341 is set away from the center surface of the shaft extension body, while the inner contour peak line of the shaft extension recess 342 is set close to the center surface of the shaft extension body.

[0146] ③ The radial width of the corrugated skirt structure along the shaft extension body is W20, and the radial width of the third corrugated segment along the shaft extension body is W21. W20 and W21 satisfy: 60% ≤ W21 / W20 ≤ 80%. Reducing W21 / W20 can increase the arc radius of the fourth corrugated segment. On the one hand, it can reduce the stress when the annular diaphragm 1 that cooperates with the shaft extension body is formed. On the other hand, (when the annular diaphragm 1 needs to be connected with the flange and the clamping ring 41) it expands the diameter range of the tools used to process the flange or the clamping ring 41, and improves the efficiency of processing the flange or the clamping ring 41. Increasing W21 / W20 can reduce the radial width of the corrugated skirt structure of the shaft extension, and can improve the swing flexibility of the annular diaphragm 1 between the inner flange 3 and the outer flange.

[0147] In addition, when γ satisfies: 20°≤γ≤35°, and θ satisfies: 4.5°≤θ≤12° and / or W20 / W21 satisfies: 60%≤W21 / W20≤80%, the annular diaphragm 1 that cooperates with the shaft extension body can be prevented from breaking during stretching and use, the annular diaphragm 1 can be firmly connected to the flange and the clamping ring 41, and the swing flexibility of the annular diaphragm 1 between the inner flange 3 and the outer flange can be improved.

[0148] This embodiment also proposes that the shaft extension body includes a radial inner edge and a radial outer edge, and the radial inner edge and / or the radial outer edge of the shaft extension are formed with a shaft extension corrugated skirt structure; that is, only the radial inner edge of the shaft extension is formed with a shaft extension corrugated skirt structure, or only the radial outer edge of the shaft extension is formed with a shaft extension corrugated skirt structure, or both the radial inner edge and the radial outer edge of the shaft extension are formed with a shaft extension corrugated skirt structure.

[0149] In summary, this embodiment presents the overall layout and specific structure of the shaft extension corrugated skirt structure, and provides parameters related to the specific structure. The transmission connection is achieved through the shaft extension corrugated skirt structure, which prevents stress concentration at the connection point, greatly improving the safety, power density, and lifespan of the shaft extension body. It is detachable, has low maintenance costs, reduces stress on the annular diaphragm 1 that mates with the shaft extension body, extends the service life of the annular diaphragm 1 that mates with the shaft extension body, and ensures a secure connection between the shaft extension body and the annular diaphragm 1.

[0150] Example 7

[0151] Based on embodiment 5 or 6, only the inner edge of the shaft extension radially has a shaft extension corrugated skirt structure, which is a shaft extension corrugated inner skirt structure 33; the third corrugated segment of the shaft extension corrugated inner skirt structure 33 is the third inner corrugated segment, and the fourth corrugated segment of the shaft extension corrugated inner skirt structure 33 is the fourth inner corrugated segment.

[0152] Along the radial direction of the shaft extension body, from the inside to the outside, the third inner corrugated section, the fourth inner corrugated section, and the shaft extension body are arranged sequentially; the corrugation height of the third inner corrugated section decreases linearly from the inside to the outside along the radial direction of the shaft extension body.

[0153] In summary, this embodiment provides a specific structure of the axial extension corrugated inner skirt structure 33. The third inner corrugated segment, the fourth inner corrugated segment, and the axial extension body extend gradually and continuously from the inside to the outside along the radial direction of the axial extension body. This reduces the stress during the molding of the annular diaphragm 1 that cooperates with the axial extension body and extends the service life of the annular diaphragm 1 that cooperates with the axial extension body.

[0154] Example 8

[0155] Based on embodiment 5 or 6, only the outer edge of the shaft extension radially has a shaft extension corrugated skirt structure, which is a shaft extension corrugated outer skirt structure. The third corrugated segment of the shaft extension corrugated outer skirt structure is the third outer corrugated segment, and the fourth corrugated segment of the shaft extension corrugated outer skirt structure is the fourth outer corrugated segment.

[0156] Along the radial direction of the shaft extension body, from the outside to the inside, the third outer corrugated section, the fourth outer corrugated section, and the shaft extension body are arranged sequentially; the corrugation height of the third outer corrugated section decreases linearly from the outside to the inside along the radial direction of the shaft extension body.

[0157] In summary, this embodiment provides a specific structure for the corrugated outer skirt structure of the shaft extension. The third outer corrugated segment, the fourth outer corrugated segment, and the shaft extension body extend gradually and continuously from the outside to the inside along the radial direction of the shaft extension body. This reduces the stress during the molding of the annular diaphragm 1 that cooperates with the shaft extension body and extends the service life of the annular diaphragm 1 that cooperates with the shaft extension body.

[0158] Example 9

[0159] As shown in Figures 5 to 6d, this embodiment provides a transmission connection assembly, including an annular diaphragm 1 and an inner flange 3. The annular diaphragm 1 is the annular diaphragm 1 in embodiment 2, and the inner flange 3 is the flange in embodiment 7.

[0160] A diaphragm disc pin hole 132 is formed on the radial outer edge of the diaphragm disc body 11; the inner flange 3 includes an inner flange 31 and a shaft extension body, the shaft extension body of the inner flange 3 is disposed at one axial end of the inner flange 31; the radial inner edge of the shaft extension body of the inner flange 3 is formed with a shaft extension corrugated skirt structure, and a clamping thread 35 is formed on the inner side of the shaft extension body of the inner flange 3.

[0161] The transmission connection assembly also includes an outer flange, which includes an outer flange plate and has an outer flange pin hole;

[0162] The diaphragm disc corrugated inner skirt structure 14 has a diaphragm disc skirt protrusion 163 that mates with the shaft extension corrugated inner skirt structure 33, the diaphragm disc skirt concave portion 164 that mates with the shaft extension corrugated inner skirt structure 33, and the diaphragm disc pin hole 132 that mates with the outer flange pin hole, thereby allowing the annular diaphragm disc 1 to be connected to the inner flange 3 and the outer flange.

[0163] Since the perimeter of the inner radial edge 12 of the diaphragm disc is much smaller than that of the outer radial edge 13, and the flange radius of the inner flange 3 is also much smaller than that of the outer flange, the shear stress per unit length of the inner radial edge 12 is much greater than that per unit length of the outer radial edge 13. Therefore, the connection method between the inner radial edge 12 and the inner flange 3 is usually a key factor in the reliability and load-bearing capacity of the annular diaphragm disc 1. The corrugated inner skirt structure 14 of the diaphragm disc can significantly improve the overall reliability and load-bearing capacity of the annular diaphragm disc 1. The outer radial edge 13 of the diaphragm disc forms a pin hole 132. Even though there is a large stress concentration at the pin hole 132, its impact on the overall reliability and load-bearing capacity of the annular diaphragm disc 1 is limited. Therefore, the connection between the inner radial edge 12 and the inner flange 3 via the corrugated skirt structure significantly improves performance. The connection between the outer radial edge 13 and the outer flange via the traditional pin hole 132 and pin bolts is simple in structure and still maintains reliable connection.

[0164] The transmission connection assembly also includes a clamping ring 41 and a clamping bolt 42. One axial end of the clamping ring 41 has a corrugated skirt structure, and the clamping bolt 42 includes a clamping section and a threaded section. When it is necessary to connect the annular diaphragm 1 and the inner flange 3, the inner flange 3 is set at one axial end of the annular diaphragm 1, so that the corrugated inner skirt structure 33 of the shaft extension and the corrugated inner skirt structure 14 of the diaphragm 1 are engaged. The clamping ring 41 is set at the other axial end of the annular diaphragm 1, so that the corrugated skirt structure of the clamping ring 41 and the corrugated inner skirt structure 14 of the diaphragm 1 are engaged. The threaded section passes through the clamping ring 41 and the annular diaphragm 1, and the clamping bolt 42 is connected to the clamping thread 35. The clamping section is located at the end of the clamping ring 41 away from the inner flange 3 and abuts against the clamping ring 41, thereby connecting the annular diaphragm 1 and the inner flange 3.

[0165] According to actual needs, multiple annular diaphragm discs 1 can be stacked together and positioned through positioning holes 131 to form a diaphragm disc assembly 43. When it is necessary to connect the diaphragm disc assembly 43 and the inner flange 3, the inner flange 3 is set at one axial end of the diaphragm disc assembly 43, so that the axial extension corrugated inner skirt structure 33 and the diaphragm disc corrugated inner skirt structure 14 are engaged. The clamping ring 41 is set at the other axial end of the diaphragm disc assembly 43, so that the corrugated skirt structure of the clamping ring 41 and the diaphragm disc corrugated inner skirt structure 14 are engaged. The threaded section passes through the clamping ring 41 and the diaphragm disc assembly 43, and the threaded section is connected with the clamping thread 35. The clamping section is located at the end of the clamping ring 41 away from the inner flange 3 and the clamping section abuts against the clamping ring 41, thereby connecting the diaphragm disc assembly 43 and the inner flange 3.

[0166] In summary, this embodiment provides a combination of the diaphragm disc corrugated inner skirt structure 14 and the shaft extension corrugated inner skirt structure 33 to achieve the connection between the annular diaphragm disc 1 and the inner flange 3, which can significantly improve the overall reliability and load-bearing capacity of the annular diaphragm disc 1; the diaphragm disc pin hole 132 and the outer flange pin hole are matched to achieve the connection between the annular diaphragm disc 1 and the outer flange, which can maintain a reliable connection.

[0167] Example 10

[0168] This embodiment provides a transmission connection assembly, including an annular diaphragm 1 and a flange; the annular diaphragm 1 is the annular diaphragm 1 in embodiment 4, and the flange includes an inner flange 3 and an outer flange, the inner flange 3 is the flange in embodiment 7, and the outer flange is the flange in embodiment 8;

[0169] Both the inner and outer radial edges of the membrane disk body 11 are formed with membrane disk corrugated skirt structures. The membrane disk corrugated skirt structure formed on the inner radial edge of the membrane disk body 11 is the membrane disk corrugated inner skirt structure 14, and the membrane disk corrugated skirt structure formed on the outer radial edge of the membrane disk body 11 is the membrane disk corrugated outer skirt structure 15.

[0170] The flange includes an inner flange 3 and an outer flange; the inner flange 3 includes an inner flange plate 31 and a shaft extension body, the shaft extension body of the inner flange 3 is disposed at one axial end of the inner flange plate 31; the radial inner edge of the shaft extension body of the inner flange 3 forms a shaft extension corrugated skirt structure, the shaft extension corrugated skirt structure is a shaft extension corrugated inner skirt structure 33; the outer flange includes an outer flange plate and a shaft extension body, the radial outer edge of the shaft extension body of the outer flange forms a shaft extension corrugated skirt structure, the shaft extension corrugated skirt structure is a shaft extension corrugated outer skirt structure;

[0171] The diaphragm disc corrugated inner skirt structure 14 has a diaphragm disc skirt protrusion 163 that mates with the shaft extension recess 342 of the shaft extension corrugated inner skirt structure 33. The diaphragm disc corrugated inner skirt structure 14 has a diaphragm disc skirt recess 164 that mates with the shaft extension protrusion 341 of the shaft extension corrugated inner skirt structure 33. The diaphragm disc corrugated outer skirt structure 15 has a diaphragm disc skirt protrusion 163 that mates with the shaft extension recess 342 of the shaft extension corrugated outer skirt structure. The diaphragm disc corrugated outer skirt structure 15 has a diaphragm disc skirt recess 164 that mates with the shaft extension protrusion 341 of the shaft extension corrugated outer skirt structure. Thus, the annular diaphragm disc 1 can be connected to the inner flange 3 and the outer flange.

[0172] The inner radial edge 12 of the diaphragm disk and the inner flange 3 are connected by a corrugated skirt structure, and the outer radial edge 13 of the diaphragm disk and the outer flange are connected by a corrugated skirt structure. The stress at the inner radial edge 12 and the outer radial edge 13 of the diaphragm disk is small, and the overall reliability, load-bearing capacity and power density of the annular diaphragm disk 1 are high.

[0173] The transmission connection assembly also includes a clamping ring 41, a clamping bolt 42, and a clamping nut. The clamping ring 41 includes an outer clamping ring and an inner clamping ring, and one axial end of both the outer clamping ring and the inner clamping ring has a corrugated skirt structure. The clamping bolt 42 and the clamping nut both include a clamping section and a threaded section.

[0174] When it is necessary to connect the annular diaphragm 1 and the inner flange 3, the inner flange 3 is set at one axial end of the annular diaphragm 1, so that the corrugated inner skirt structure 33 of the shaft extension and the corrugated inner skirt structure 14 of the diaphragm 1 are engaged; the inner clamping ring is set at the other axial end of the annular diaphragm 1, so that the corrugated skirt structure of the inner clamping ring and the corrugated inner skirt structure 14 of the diaphragm 1 are engaged; the threaded section of the clamping bolt 42 passes through the inner clamping ring and the annular diaphragm 1, and the threaded section of the clamping bolt 42 is connected to the clamping thread 35 of the inner flange 3. The clamping section of the clamping bolt 42 is located at the end of the inner clamping ring away from the inner flange 3 and the clamping section of the clamping bolt 42 abuts against the inner clamping ring, thereby connecting the annular diaphragm 1 and the inner flange 3.

[0175] When it is necessary to connect the annular diaphragm 1 and the outer flange, the outer flange is set at one axial end of the annular diaphragm 1, so that the corrugated outer skirt structure of the shaft extension and the corrugated outer skirt structure 15 of the diaphragm 1 are engaged; the outer clamping ring is set at the other axial end of the annular diaphragm 1, so that the corrugated skirt structure of the outer clamping ring and the corrugated outer skirt structure 15 of the diaphragm 1 are engaged; the threaded section of the clamping nut is sleeved on the outer clamping ring and the annular diaphragm 1, and the threaded section of the clamping nut is connected to the clamping thread of the outer flange. The clamping section of the clamping nut is located at the end of the outer clamping ring away from the outer flange and the clamping section of the clamping nut abuts against the outer clamping ring, thereby connecting the annular diaphragm 1 and the outer flange.

[0176] According to actual needs, multiple annular diaphragm discs 1 can be stacked together and positioned through positioning holes 131 to form a diaphragm disc group 43, which is connected to the inner flange 3 and the outer flange.

[0177] In summary, this embodiment provides a combination of the corrugated inner skirt structure 14 and the shaft-extended corrugated inner skirt structure 33 to achieve the connection between the annular diaphragm disc 1 and the inner flange 3; the combination of the corrugated outer skirt structure 15 and the shaft-extended corrugated outer skirt structure to achieve the connection between the annular diaphragm disc 1 and the outer flange; this can significantly improve the overall reliability and load-bearing capacity of the annular diaphragm disc 1.

[0178] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A ring-shaped membrane disc (1) characterized in that, The annular membrane disc (1) comprises a membrane disc body (11), one end of the membrane disc body (11) is formed with a membrane disc corrugated skirt structure for driving connection with a driving object and / or a driven object; The membrane disc corrugated skirt structure is alternately formed with a membrane disc skirt convex portion (163) and a membrane disc skirt concave portion (164) along the circumference of the membrane disc body (11); wherein the membrane disc skirt convex portion (163) protrudes to one axial side of the membrane disc body (11), and the membrane disc skirt concave portion (164) is recessed to the other axial side of the membrane disc body (11); The convex height of the membrane disc skirt convex portion (163) and the concave depth of the membrane disc skirt concave portion (164) gradually decrease along the radial direction of the membrane disc body (11) respectively.

2. Ring membrane disc (1) according to claim 1, characterized in that On either axial side of the membrane disc body (11), the convex surface (165) of the membrane disc skirt convex portion (163) and the concave surface (166) of the membrane disc skirt concave portion (164) gradually and smoothly transition to the corresponding axial side surface of the membrane disc body (11) along the radial direction of the membrane disc body (11).

3. Ring membrane disc (1) according to claim 1, characterized in that On the circumferential section of the membrane disc corrugated skirt structure, the membrane disc skirt convex portion (163) is formed with a membrane disc skirt convex portion circumferential contour line (161), and the membrane disc skirt concave portion (164) is formed with a membrane disc skirt concave portion circumferential contour line (162); When the circumferential section of the membrane disc corrugated skirt structure is unfolded into a plane, the membrane disc skirt convex portion circumferential contour line (161) and the membrane disc skirt concave portion circumferential contour line (162) are both circular arcs, or one membrane disc skirt convex portion circumferential contour line (161) and an adjacent membrane disc skirt concave portion circumferential contour line (162) constitute a periodic sinusoidal curve; Wherein, the circumferential section of the membrane disc corrugated skirt structure is a circumferential section formed by cutting a cylindrical surface coaxial with the membrane disc body (11) from the membrane disc corrugated skirt structure.

4. Ring membrane disc (1) according to claim 1, characterized in that The membrane disc corrugated skirt structure comprises a first corrugated section and a second corrugated section in the radial direction of the membrane disc body (11), the first corrugated section is arranged away from the membrane disc body (11), and the second corrugated section is arranged close to the membrane disc body (11); The corrugation height of the first corrugated section linearly decreases in the direction from the first corrugated section to the second corrugated section; In the radial direction of the membrane disc body (11), the second corrugated section and the first corrugated section are tangentially connected, and the second corrugated section and the membrane disc body (11) are tangentially connected.

5. Ring-shaped membrane disc (1) according to claim 1, characterized in that The membrane disc corrugated skirt structure is formed by calendering and stretching from one end of the membrane disc body (11) in the radial direction.

6. Ring-shaped membrane disc (1) according to claim 1, characterized in that The membrane disc skirt convex portion (163) and the adjacent membrane disc skirt concave portion (164) are tangentially connected, and the included angle between the tangent plane A (181) of the tangential connection of the two and the central plane (183) of the membrane disc body is α, the α at the radial end of the membrane disc body (11) satisfies: 20°≤α≤35°; and / or, An angle between a tangent plane B (182) of an outer contour peak line of the membrane disc skirt protrusion (163) and a center plane (183) of the membrane disc body is β, and the β satisfies: 4.5°≤β≤12°; wherein, along the axial direction of the membrane disc body (11), from the center plane (183) of the membrane disc body (11) to the membrane disc skirt protrusion (163), the outer contour peak line of the membrane disc skirt protrusion (163) is arranged away from the center plane (183) of the membrane disc body, and the inner contour peak line of the membrane disc skirt protrusion (163) is arranged close to the center plane (183) of the membrane disc body.

7. Ring-shaped membrane disc (1) according to claim 4, characterized in that The membrane disc corrugated skirt structure has a radial width W10 along the membrane disc body (11), and the first corrugated section has a radial width W11 along the membrane disc body (11), and the W10 and the W11 satisfy: 60%≤W11 / W10≤80%.

8. Ring membrane disc (1) according to claim 1, characterized in that The membrane disc body (11) comprises a membrane disc radial inner edge (12) and a membrane disc radial outer edge (13) arranged opposite along the radial direction of the membrane disc body (11), and the membrane disc corrugated skirt structure is formed at least on the membrane disc radial inner edge (12).

9. Ring-shaped membrane disc (1) according to claim 8, characterized in that The membrane disc corrugated skirt structure formed by the membrane disc radial inner edge (12) is a membrane disc corrugated inner skirt structure (14), the first corrugated section of the membrane disc corrugated inner skirt structure (14) is a first inner corrugated section (141), and the second corrugated section of the membrane disc corrugated inner skirt structure (14) is a second inner corrugated section (142). From inside to outside along the radial direction of the membrane disc body (11), the first inner corrugated section (141), the second inner corrugated section (142) and the membrane disc body (11) are arranged in sequence, and the corrugated height of the first inner corrugated section (141) linearly decreases from inside to outside along the radial direction of the membrane disc body (11).

10. Ring-shaped membrane disc (1) according to claim 8, characterized in that The membrane disc corrugated skirt structure formed by the membrane disc radial outer edge (13) is a membrane disc corrugated outer skirt structure (15), the first corrugated section of the membrane disc corrugated outer skirt structure (15) is a first outer corrugated section (151), and the second corrugated section of the membrane disc corrugated outer skirt structure (15) is a second outer corrugated section (152). From outside to inside along the radial direction of the membrane disc body (11), the first outer corrugated section (151), the second outer corrugated section (152) and the membrane disc body (11) are arranged in sequence, and the corrugated height of the first outer corrugated section (151) linearly decreases from outside to inside along the radial direction of the membrane disc body (11).

11. A flange, characterized by The shaft extension comprises a shaft extension body, and the shaft extension body is formed with a shaft extension corrugated skirt structure; the shaft extension corrugated skirt structure is arranged away from the flange plate and at a radial end of the shaft extension body; and the shaft extension corrugated skirt structure has a structure matched with the membrane disc corrugated skirt structure in any one of claims 1 to 10.

12. A flange, characterized by The shaft extension includes a shaft extension body, and the shaft extension body is formed with a shaft extension corrugated skirt structure; the shaft extension corrugated skirt structure is away from the flange and located at a radial end of the shaft extension body; the shaft extension corrugated skirt structure is used for driving connection with a driving object and / or a driven object; The shaft extension corrugated skirt structure is alternately formed with a shaft extension convex part and a shaft extension concave part along the circumference of the shaft extension body; wherein the shaft extension convex part protrudes to one side of the shaft extension body in the axial direction, and the shaft extension concave part is recessed to the other side of the shaft extension body in the axial direction; The shaft extension convex part and the shaft extension concave part each gradually and smoothly transition to the shaft extension body along the radial direction of the shaft extension body.

13. A drive connection assembly characterized by, The annular membrane disc (1) comprises an inner flange (3) and a flange according to any one of claims 1 to 10; The radial inner edge of the membrane disc body (11) is formed with the membrane disc corrugated skirt structure, and the radial outer edge of the membrane disc body (11) is formed with a membrane disc pin hole (132); the radial inner edge of the shaft extension body of the inner flange (3) is formed with the shaft extension corrugated skirt structure; The driving connection assembly further comprises an outer flange, and the flange disc of the outer flange is formed with an outer flange pin hole; The membrane disc corrugated skirt structure and the shaft extension corrugated skirt structure are matched, the membrane disc pin hole (132) and the outer flange pin hole are matched, and then the annular membrane disc (1) can be connected with the inner flange (3) and the outer flange.

14. A drive connection assembly characterized by, The annular membrane disc (1) comprises an inner flange (3) and a flange according to any one of claims 1 to 10; The radial inner edge and the radial outer edge of the membrane disc body (11) are each formed with the membrane disc corrugated skirt structure, the membrane disc corrugated skirt structure formed at the radial inner edge of the membrane disc body (11) is a membrane disc corrugated inner skirt structure (14), and the membrane disc corrugated skirt structure formed at the radial outer edge of the membrane disc body (11) is a membrane disc corrugated outer skirt structure (15); The flange comprises an inner flange (3) and an outer flange; the radial inner edge of the shaft extension body of the inner flange (3) is formed with the shaft extension corrugated skirt structure, and the shaft extension corrugated skirt structure is a shaft extension corrugated inner skirt structure (33); and the radial outer edge of the shaft extension body of the outer flange is formed with the shaft extension corrugated skirt structure, and the shaft extension corrugated skirt structure is a shaft extension corrugated outer skirt structure; The membrane disc corrugated inner skirt structure (14) and the shaft extension corrugated inner skirt structure (33) are matched, the membrane disc corrugated outer skirt structure (15) and the shaft extension corrugated outer skirt structure are matched, and then the annular membrane disc (1) can be connected with the inner flange (3) and the outer flange.

Images