CN113187827A

CN113187827A - Elastic coupling

Info

Publication number: CN113187827A
Application number: CN202010038142.2A
Authority: CN
Inventors: 刘国花; 谭晓星; 何永慧; 褚洪森; 田宇琦; 孔曼军; 史进; 许航锋
Original assignee: 711th Research Institute of CSIC
Current assignee: Shanghai Marine Diesel Engine Research Institute; 711th Research Institute of CSIC
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2021-07-30

Abstract

The invention discloses an elastic coupling. Elastic coupling includes elastic element, first flange and wave form diaphragm subassembly, wave form diaphragm subassembly at least some is located between elastic element and the first flange along elastic coupling's axial direction, wave form diaphragm subassembly includes the supporting sleeve, diaphragm seat and deformation section, the supporting sleeve is connected with first flange, the diaphragm seat sets up in radial outside for the supporting sleeve, the diaphragm seat is connected with elastic element, bearing sleeve and diaphragm seat are connected to the deformation section, the deformation section structure is corrugated shape and can take place elastic deformation, wherein, the inner of deformation section is located between first flange and the supporting sleeve along the axial direction, and the inner of deformation section is in the same place with first flange and supporting sleeve connection. According to the elastic coupling, the large axial, angular and radial displacement compensation capacity can be realized, the torsional vibration characteristic of a shaft system is optimized, the safety of the shaft system operation is guaranteed, the structure is compact, and the installation is convenient.

Description

Elastic coupling

Technical Field

The invention relates to the technical field of transmission, in particular to an elastic coupling.

Background

The elastic coupling is arranged in a transmission system and can be widely applied to the fields of ships, locomotives, mines, agricultural machinery and the like. For example, an elastic coupling as a power transmission element may be used to connect the main machine and the working machine, so that the torque and the rotational speed output by the main machine are transmitted to the working machine via the elastic coupling. In a ship power transmission system, a conventional coupling mainly comprises a metal flat diaphragm or a flexible rod component and a rubber elastic element, but the coupling cannot well meet the requirement of large displacement compensation in narrow space.

There is therefore a need for an elastic coupling that at least partially solves the problems of the prior art.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In order to at least partially solve the above-mentioned problems, according to a first aspect of the present invention, there is provided an elastic coupling including:

an elastic element;

a first flange;

a contoured diaphragm assembly, at least a portion of which is located between the resilient element and the first flange along an axial direction of the resilient coupling, the contoured diaphragm assembly comprising:

the supporting sleeve is connected with the first flange;

the diaphragm seat is arranged on the radial outer side relative to the supporting sleeve and is connected with the elastic element; and

a deformation section connecting the support sleeve and the diaphragm seat, the deformation section being corrugated and capable of elastic deformation,

the inner end of the deformation section is located between the first flange and the supporting sleeve along the axial direction, and the inner end of the deformation section is connected with the first flange and the supporting sleeve.

According to the elastic coupling, the elastic coupling comprises the waveform membrane assembly, the waveform membrane assembly comprises the deformation section capable of generating elastic deformation, the deformation section can be used as a displacement compensation mechanism, the structural advantages of large central displacement, good elasticity and the like of the waveform membrane assembly are utilized, and the elastic coupling is matched with the application of the elastic element, so that the elastic coupling can realize larger axial, angular and radial displacement compensation capacity, has the functions of adjusting and improving the torsional vibration characteristic of a shafting, ensures the running safety of the shafting, and is compact in structure and convenient to install.

Optionally, the deformation section comprises at least two corrugations arranged in a radial direction of the resilient coupling and having the same or different curvature from each other. Thereby, the deformation section can be elastically deformed well.

Optionally, the deformation section comprises at least one membrane configured in a circular or fan shape and arranged around the support sleeve in a circumferential direction of the corrugated membrane assembly. Therefore, the processing and the manufacturing are convenient, and the processing precision is reduced.

Optionally, the diaphragm seat and the bearing sleeve are configured to be relatively movable in the axial direction of the elastic coupling for axial displacement compensation. According to the scheme, the waveform diaphragm assembly can realize larger axial displacement compensation.

Optionally, the elastic element is configured to be movable in a radial direction of the elastic coupling for radial displacement compensation. According to the scheme, the elastic element can realize certain radial displacement compensation.

Optionally, the contoured diaphragm assembly further comprises a protrusion configured as part of the support sleeve and extendable into the resilient element.

Optionally, the protrusion is spaced apart from a radially inner surface of the elastic element, and when the deformation section is elastically deformed, the support sleeve of the corrugated diaphragm assembly may be angularly offset from the central axis of the elastic coupling to achieve angular displacement compensation. According to the scheme, the waveform diaphragm assembly can realize larger angular displacement compensation.

Optionally, the resilient element comprises at least one resilient body and a second flange for bonding adjacent resilient bodies, the second flange comprising a side facing the support sleeve, the side of the second flange being closer to the support sleeve than a side of the protrusion. Thereby preventing the second flange from flying off.

Optionally, the first flange includes a first step portion, and the support sleeve further includes a second step portion, and a radial inner surface of the second step portion abuts against a radial outer surface of the first step portion. Thereby ensuring the concentricity of the first flange and the bearing bush.

Optionally, the flange comprises a flange hole, the supporting sleeve comprises a supporting sleeve hole, the central axes of the flange hole and the supporting sleeve hole are both parallel to the central axis of the first flange, the pressing plate is arranged between the inner end of the deformation section and the first flange, and the connecting piece is used for connecting the flange hole, the pressing plate, the inner end of the deformation section and the supporting sleeve hole together. Thereby, a firm connection of the above-mentioned members is ensured.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles and apparatus of the invention. In the drawings, there is shown in the drawings,

FIG. 1 is a schematic view of the connection of an elastomeric coupling to a diesel engine and a gearbox, respectively, according to a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the elastomeric coupling shown in FIG. 1;

FIG. 3 is a cross-sectional view of the undulating diaphragm assembly of the elastomeric coupling shown in FIG. 2;

fig. 4 is a schematic view of the elastic coupling shown in fig. 2, in which the wave-shaped diaphragm assembly is elastically deformed along the axial direction of the elastic coupling, so as to compensate for axial displacement;

fig. 5 is a schematic diagram of the elastic deformation of the wave diaphragm assembly of the elastic coupling shown in fig. 2, wherein the supporting sleeve of the wave diaphragm assembly deviates from the central axis of the elastic coupling by a certain angle, so that angular displacement compensation can be realized;

fig. 6 is a schematic view of the elastic coupling shown in fig. 2, in which the elastic elements are elastically deformed in the radial direction of the elastic coupling, so as to compensate for radial displacement.

Description of reference numerals:

100: the elastic coupling 110: first flange

111: first flange hole 112: first step part

113: radially outer surface of first step portion 120: elastic element

121: elastomer 122: second flange

123: side 130 of second flange: corrugated diaphragm assembly

131: the support sleeve 132: diaphragm seat

133: deformation section 134: inner end of the deformation section

135: outer end 136 of deformation section: projection part

137: side 138 of the projection: second step part

139: radially inner surface 141 of second step portion: pressing plate

142: pressing ring 143: first connecting piece

144: second connecting member 145: bearing trepan boring

146: plate hole 147: third connecting piece

200: a diesel engine 201: gear box

202: propeller 203: vibration isolator

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

In the following description, for purposes of explanation, specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to the detailed description and should not be construed as limited to the embodiments set forth herein.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for purposes of illustration only and are not limiting.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

Specific embodiments of the present invention will now be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the invention and do not limit the invention.

The conventional elastic coupling generally adopts a metal flat diaphragm or a flexible rod to realize axial displacement and angular displacement compensation, but the conventional elastic coupling is difficult to meet the development requirement of a modern high-power system. In order to meet the special matching requirements of the ship field for high power density and low target characteristics, as shown in fig. 1, the invention provides an elastic coupling 100 to effectively reduce vibration, noise and impact in a narrow space.

In the embodiment shown in fig. 2, the elastic coupling 100 comprises a first flange 110, an elastic element 120 and a wave diaphragm assembly 130 connected to the first flange 110 and the elastic element 120. The elastic member 120 may be used to connect to a host machine, and the first flange 110 may be used to connect to a working device, so that torque and rotational speed output from the host machine are transmitted to the working device via the elastic coupling 100, thereby operating the working device.

For example, as shown in fig. 1, the main machine may be a diesel engine 200, the working device may be a gear box 201, the elastic coupling 100 is disposed between the diesel engine 200 and the gear box 201, the elastic element 120 of the elastic coupling 100 is configured to be connected with the diesel engine 200, and the first flange 110 of the elastic coupling 100 is configured to be connected with the gear box 201. The gearbox 201 may also be connected with a propeller 202. Preferably, in order to prevent the diesel engine 200 from excessively vibrating, a vibration isolator 203 may be further provided at the bottom of the diesel engine 200. The vibration isolator 203 may be made of an elastic member so as to ensure desired elasticity.

The diesel engine 200 can be used as a power source, and the energy output by the diesel engine 200 can be transmitted to the elastic element 120 of the elastic coupling 100 via the flywheel, then transmitted to the gear box 201 via the corrugated diaphragm assembly 130 and the first flange 110, and finally transmitted to the propeller 202. The torque and rotational speed of the diesel engine 200 can be efficiently transmitted to the gear box 201 via the elastic coupling 100 and finally to the propeller 202, and the reaction force of the rotation of the propeller 202 can be transmitted to the hull.

The elastic coupling 100 is capable of compensating for the anisotropic steady-state and transient relative displacements between the main machine (diesel engine 200) and the working device (gearbox 201). For example, the diesel engine 200 may be elastically mounted to displace in a plurality of directions, such as radially, axially and/or angularly. The resilient elements 120 of the resilient coupling 100 also deform axially when transmitting torque, resulting in axial displacement. Deformation of the hull of the vessel also results in an isotropic deformation of the shafting. Thus, the elastic coupling 100 can attenuate the vibration transmitted by the main engine (diesel engine 200) and the working device (gearbox 201), has the functions of sound insulation, vibration reduction and impact resistance, and can optimize the characteristic of torsional vibration of a shafting.

Returning now to fig. 2, the first flange 110 may be made of a metal or non-metal material to provide sufficient structural strength to the first flange 110. The longitudinal sectional shape of the first flange 110 may be substantially i-shaped. The first flange 110 may include a first flange, a second flange, and a flange body for connecting the first flange and the second flange, the first flange and the second flange being oppositely disposed along an axial direction of the first flange. The first flange may be configured in a ring shape and arranged around a circumferential direction of the flange body, and the first flange may be connected to the flange body. The second flange may be configured in a ring shape and arranged around a circumferential direction of the flange body, and the second flange may also be connected to the flange body. The first flange 110 further includes a hollow first cavity, and the first cavity may penetrate the first flange, the second flange, and the flange body in an axial direction of the first flange 110 to reduce the weight of the first flange 110.

The first flange includes a first flange aperture 111, the first flange aperture 111 for coupling with the corrugated diaphragm assembly 130. The manner in which the first flange hole 111 is connected to the corrugated diaphragm assembly 130 will be described later. The central axis of the first flange hole 111 is parallel to the central axis of the first flange 110. The first flange may include a plurality of first flange holes 111, and the plurality of first flange holes 111 may be arranged at intervals in a circumferential direction of the first flange 110.

The second flange includes a second flange hole for connection with the gear case 201. The central axis of the second flange hole may be parallel to the central axis of the first flange 110. The second flange hole may be connected to the gear case 201 by a connection member (e.g., a screw, a bolt, etc.). The second flange may include a plurality of second flange holes that are arranged at intervals in a circumferential direction of the first flange 110.

In order to enable the elastic coupling 100 to compensate for the anisotropic steady-state and transient relative displacements between the main machine and the working device and to improve the torsional vibration characteristics of the shafting, at least a portion of the corrugated diaphragm assembly 130 is located between the elastic element 120 and the first flange 110 in the axial direction of the elastic coupling 100.

Specifically, in the present embodiment, as shown in fig. 3, the corrugated diaphragm assembly 130 may include a support sleeve 131, a diaphragm seat 132, and a deformation section 133. The various components of the undulating diaphragm assembly 130 will be described in detail below in conjunction with fig. 2 and 3.

The support sleeve 131 is connected to the first flange 110. For example, in the present embodiment, the support sleeve 131 includes a support sleeve hole 145, and the support sleeve hole 145 is used to connect with the first flange hole 111. The support sleeve hole 145 may be connected to the first flange hole 111 by a first connector 143 (e.g., a bolt). The central axis of the bearing trepan 145 is parallel to the central axis of the first flange 110. The bearing sleeve 131 may include a plurality of bearing sleeve holes 145, and the plurality of bearing sleeve holes 145 may be arranged at intervals in a circumferential direction of the bearing sleeve 131. The number of the support sleeve holes 145 may be the same as the number of the first flange holes 111 to ensure a stable connection of the first flange 110 with the support sleeve 131.

Further, in order to ensure the coaxiality of the first flange 110 and the support sleeve 131, as shown in fig. 2, the first flange of the first flange 110 further includes a first stepped portion 112, and the sectional shape of the first stepped portion 112 may be L-shaped on a plane passing through the central axis of the first flange 110. As shown in fig. 3, the support sleeve 131 further includes a second step portion 138, and the second step portion 138 may extend from a support sleeve side surface facing the first flange 110 toward the first flange 110, and the support sleeve side surface is perpendicular to the central axis of the first flange 110.

The radially inner surface 139 of the second stepped portion 138 abuts against the radially outer surface 113 of the first stepped portion 112, the radially inner surface 139 of the second stepped portion 138 is also a surface of the second stepped portion 138 facing the central axis of the first flange 110, and the radially inner surface 139 of the second stepped portion 138 is parallel to the central axis of the first flange 110. The radially outer surface 113 of the first step portion 112 is a surface of the first step portion 112 facing away from the central axis of the first flange 110, and the radially outer surface 113 of the first step portion 112 is parallel to the central axis of the first flange 110. In this way, the first step portion 112 and the second step portion 138 are abutted in the radial direction, and the support sleeve 131 and the first flange 110 are radially constrained with each other, so that the coaxiality between the support sleeve 131 and the first flange 110 is ensured.

It should be noted that the "axial direction of the elastic coupling 100" referred to herein means a direction parallel to the center axis a of the elastic coupling 100 in the natural state. The "radial direction of the resilient coupling 100" then refers to a direction perpendicular to the central axis a of the resilient coupling 100 in the natural state and diverging from or towards the central axis a.

The diaphragm seat 132 is arranged radially outside with respect to the bearing sleeve 131, and the diaphragm seat 132 is connected to the elastic element 120. To facilitate the connection of the undulating diaphragm assembly 130 to the elastic member 120, the elastic member 120 may be connected to the diaphragm seat 132 of the undulating diaphragm assembly 130 by a second connection member 144.

As shown in fig. 2, the deformation section 133 connects the support sleeve 131 and the diaphragm seat 132. The deformation section 133 may be made of a metal material, or may be made of other materials with high tensile strength and fatigue strength. This allows the undulating diaphragm assembly 130 to be lightweight and have a large radial and axial displacement compensation while maintaining a corresponding structural strength.

In particular, in the present embodiment, the deformation segment 133 is located at least partially between the support sleeve 131 and the diaphragm seat 132 in the radial direction of the elastic coupling 100. The inner end 134 of the deformation segment 133 is connected to the support sleeve 131, the inner end 134 of the deformation segment 133 is located between the first flange 110 and the support sleeve 131 in the axial direction, and the inner end 134 of the deformation segment 133 is connected with the support sleeve 131 and the first flange 110 through a first connecting member 143.

The outer end 135 of the deformation segment 133 is connected to the diaphragm seat 132. In order to provide the elastic coupling 100 with a good displacement compensation function, the deformation section 133 is corrugated and can be elastically deformed. Thus, when the elastic coupling 100 transmits torque and rotating speed, the corrugated diaphragm assembly 130 can compensate for axial displacement and angular displacement, and the elastic element 120 can compensate for radial displacement.

According to the elastic coupling 100 disclosed by the invention, the elastic element 120 can realize large radial displacement compensation, the corrugated diaphragm assembly 130 comprises the deformation section 133 which is constructed in a corrugated shape, so that large axial displacement compensation and angular displacement compensation can be better realized, and the inner end 134 of the deformation section 133 is positioned between the first flange 110 and the supporting sleeve 131 along the axial direction, so that the size of the elastic coupling 100 along the axial direction is reduced, the rotating speed and the torque can be well transmitted in a narrow space, and the function of large radial and axial displacement compensation can be met. The corrugated diaphragm assembly 130 disclosed by the invention can replace a metal flat diaphragm or a flexible rod, so that the hanging weight of a main machine and the bearing abrasion are reduced, and the development requirements of a modern power system on high power density and low target characteristics are met.

Preferably, in order to prevent the first flange 110 from wearing the inner end 134 of the deformation section 133 during the connection process, the elastic coupling 100 further includes a pressing plate 141, and the pressing plate 141 is disposed between the inner end 134 of the deformation section 133 and the first flange 110, so that the pressing plate 141 can protect the inner end 134 of the deformation section 133. The pressure plate 141 may also be located outside the second step 138 to facilitate the second step 138 in positioning the pressure plate 141.

The inner end 134 of the deformation section 133 is provided with a through hole, the pressing plate 141 is provided with a pressing plate hole 146, the through hole of the inner end 134 of the deformation section 133 and the central axis of the pressing plate hole 146 of the pressing plate 141 can be parallel to the central axis of the first flange 110, and the through hole of the inner end 134 of the deformation section 133 and the pressing plate hole 146 of the pressing plate 141 correspond to the first flange hole 111 and the supporting sleeve hole 145.

In this way, the first connecting member 143 can connect the first flange hole 111, the pressing plate 141, the inner end 134 of the shape-changing section 133 and the support sleeve hole 145 together, so that the first flange 110, the pressing plate 141, the shape-changing section 133 and the support sleeve 131 are connected together, so that the corrugated diaphragm assembly 130 and the first flange 110 are connected together, and the connection strength is enhanced.

Likewise, the outer end 135 of the shape-changing segment 133 can also be connected to the diaphragm seat 132 by the aforementioned second connecting member 144. The second connector 144 may be a screw or a bolt. The diaphragm seat 132 is provided with a diaphragm seat hole, the outer end 135 of the deformation segment 133 is provided with a through hole, and the second connecting member 144 can connect the through hole of the outer end 135 of the deformation segment 133 and the diaphragm seat hole together.

In order to prevent the second connecting member 144 from wearing the outer end 135 of the deformation section 133 during the connection process, the elastic shaft coupling 100 further includes a pressing ring 142, and the pressing ring 142 is disposed between the outer end 135 of the deformation section 133 and the head of the second connecting member 144, so that the pressing ring 142 can protect the outer end 135 of the deformation section 133. The pressing ring 142 may be provided with a through hole, and the central axes of the diaphragm seat hole, the through hole of the outer end 135 of the deformation section 133, and the through hole of the pressing ring 142 may be parallel to the central axis of the first flange 110.

The second connection member 144 can connect the through hole of the pressing ring 142, the through hole of the outer end 135 of the shape-changing segment 133, the diaphragm seat hole, and the elastic member 120 together, so that the pressing ring 142, the shape-changing segment 133, the diaphragm seat 132, and the elastic member 120 are connected together, thereby connecting the corrugated diaphragm assembly 130 and the elastic member 120 together, enhancing the connection strength.

Of course, the outer end 135 of the deformation segment 133 and the membrane seat 132 may be connected together by a third connecting member, and the membrane seat 132 and the elastic member 120 may be connected together by a fourth connecting member (not shown). Therefore, the bolt positioned above firstly assembles the outer end of the deformation section and the diaphragm seat into a whole and then is connected with the elastic element. Of course, the shape-changing section 133, the membrane seat 132 and the elastic member 120, which are located above the page shown in fig. 2, may be connected by a plurality of third and fourth connecting members to secure stability of the connection.

After the shape-changing segment 133, the membrane seat 132 and the elastic member 120 which are positioned above the page of fig. 2 are coupled together, the second coupling member 144 positioned below the page of fig. 2 can directly couple the shape-changing segment 133, the membrane seat 132 and the elastic member 120 together, thereby facilitating the installation and removal.

Thus, when the diaphragm seat 132 and the elastic element 120 are separated, all the connecting parts are not required to be disassembled, and only the second connecting part 144 and the fourth connecting part are required to be disassembled, so that the disassembling of a plurality of parts is avoided.

Further, as shown in fig. 2 and 3, the shape-changing section 133 may be configured as a thin plate having an equal thickness. In order to allow a good elastic deformation of the deformation section 133, the deformation section 133 comprises at least two corrugations, which are arranged in a radial direction of the elastic coupling 100. The curvatures of the at least two corrugations are identical or different from one another and can each be designed in detail according to a desired characteristic curve. In this way, the compensation reaction force applied to the corrugated diaphragm assembly 130 linearly increases with the increase of the compensation displacement under the product design and use condition, but the compensation stiffness remains substantially unchanged, so that the corrugated diaphragm assembly 130 has the characteristics of larger displacement compensation capability, small reaction force and the like.

Further, the deformation section 133 may include at least one membrane, which may be configured in a circular ring shape or a fan shape and at least one membrane is disposed around the support sleeve 131 in a circumferential direction of the wave-shaped membrane assembly 130. Therefore, the processing and the manufacturing are convenient, and the processing precision is reduced. For example, the deformation section 133 may include three diaphragms, which may be arranged around the support sleeve 131 in the circumferential direction of the undulating diaphragm assembly 130, and adjacent diaphragms may be connected together. The deformation section 133 enhances the structural strength of the deformation section 133 when constructed as a full-circle annular membrane.

Furthermore, in order to provide the elastic element 120 with good elastic deformation, it can absorb vibration energy, adjust and improve the torsional vibration characteristics of the transmission shaft. The elastic body 121 in the elastic member 120 may be made of rubber. The elastic element 120 made of rubber can also realize functions of good torque transmission, sound insulation and vibration reduction, radial displacement compensation and the like. Of course, the elastic body 121 of the elastic element 120 may also be made of other non-metal materials with elasticity, such as polyurethane. To facilitate installation, the resilient member 120 may be connected to the host computer by bolts and washers.

As shown in fig. 2, the elastic member 120 includes an elastic body 121 and a second flange 122, and the second flange 122 may be connected to the elastic body 121. Specifically, the elastic element 120 may further include at least two elastic bodies 121 and a second flange 122, and the at least two elastic bodies 121 are arranged in the axial direction. The second flange 122 is used to bond the adjacent elastic bodies 121. The elastic body 121 may be designed in terms of equal shear strength. In the embodiment shown in fig. 2, the elastic member 120 includes two elastic bodies 121 and a second flange 122, and the second flange 122 is used to bond two adjacent elastic bodies 121, thereby enhancing the structural strength of the elastic member 120. Preferably, the second flange can also connect two adjacent elastic bodies together through bolts so as to further ensure the connection strength.

Of course, in an embodiment not shown in the drawings, the elastic element may further include a plurality of elastic bodies connected in series along the axial direction of the elastic coupling, and a plurality of second flanges for bonding two adjacent elastic bodies, thereby ensuring the connection strength. Of course, a plurality of elastic bodies can also be connected in parallel, thereby increasing the torque transmission capacity of the elastic coupling.

The elastic elements 120 may be configured to be movable in a radial direction of the elastic coupling 100 (i.e. the elastic elements 120 enable radial compensation, which will be described in detail later).

The elastomer 121 and the second flange 122 each have a cavity, the undulating diaphragm assembly may further comprise a protrusion 136, the protrusion 136 may be configured as part of the support sleeve 131, and the protrusion 136 may extend into the cavity. The second flange 122 comprises a side 123 facing the support sleeve 131 and the protrusion 136 may comprise a side 137 facing away from the support sleeve 131. In the free state, the side 123 of the second flange 122 may be perpendicular to the central axis of the second flange 122, and the side 137 of the protrusion 136 may be perpendicular to the central axis of the second flange 122. In this embodiment, the central axis of the second flange 122 may coincide with the central axis of the first flange 110, so as to ensure the coaxiality of the first flange 110 and the elastic element 120.

In order to prevent the second flange 122 from flying away after the elastic element 120 is broken, the side 123 of the second flange 122 is closer to the support sleeve 131 than the side 137 of the protrusion 136. Thus, when the elastic element 120 is damaged, the second flange 122 is acted by the inertia force to abut against the protrusion 136, and the protrusion 136 blocks the second flange 122 from flying away, thereby improving the safety.

Further, in the illustrated embodiment, the corrugated diaphragm assembly 130 is disposed on one side of the elastic element 120 in the axial direction of the elastic coupling 100. In an embodiment, not shown, the wave diaphragm assembly is arranged on the other side of the elastic element in the axial direction of the elastic coupling. Of course, both sides of the elastic element in the axial direction of the elastic coupling may be provided with a wave diaphragm assembly.

The case where the corrugated diaphragm assembly 130 is elastically deformed will now be described.

As shown in fig. 4, the corrugated diaphragm assembly 130 is configured to be movable in the axial direction of the elastic coupling 100. Referring to fig. 1, when the main engine (i.e., the diesel engine 200) is started, the elastic element 120 is connected to the main engine, and the torque and the rotational speed output from the main engine are transmitted to the corrugated diaphragm assembly 130 through the elastic element 120 and then transmitted to the first flange 110 through the corrugated diaphragm assembly 130. At this time, the deformation section 133 of the corrugated diaphragm assembly 130 is elastically deformed, and the diaphragm seat 132 is relatively moved with respect to the support sleeve 131 (the first flange 110) in the axial direction of the elastic coupling 100, so that the axial displacement compensation is realized. When the main machine stops, the elastic coupling 100 is not operated any more, and the deformation section 133 is restored to move the corrugated diaphragm assembly 130 in the axial direction of the elastic coupling 100 toward the elastic member 120, thereby being restored. Of course, in an embodiment not shown, the corrugated diaphragm assembly 130 may be moved along the axial direction of the elastic coupling 100 toward the elastic element 120 and then toward the first flange 110, so as to be restored.

In the present embodiment, as shown in fig. 4, the amount X of movement of the corrugated diaphragm assembly 130 in the axial direction of the elastic coupling 100 may be 0 to 10mm or more, and the amount X of movement of the corrugated diaphragm assembly 130 in the axial direction of the elastic coupling 100 may be 0 to 10mm or more, which may be widely applied to various environments.

As shown in fig. 5, when the deformation section 133 is elastically deformed, because the rotational speed and the torque output by the host are transmitted to the corrugated diaphragm assembly 130, the supporting sleeve 131 may also deviate from the central axis a of the elastic coupling 100 by an angle α, so as to reduce the angular stiffness of the elastic coupling 100, thereby achieving angular displacement compensation. In the present embodiment, the angle α may be 1 ° to 2 ° or more, which can be widely applied to various environments.

Preferably, the protrusion 136 is spaced apart from the radially inner surface of the elastic element 120, that is, the protrusion 136 may be spaced apart from both the elastic body 121 and the radially inner surface of the second flange 122, so as to avoid interference between the protrusion 136 and the elastic element 120, thereby affecting the corrugated diaphragm assembly 130 to realize angular displacement compensation.

As shown in fig. 6, since the rotational speed and the torque of the output of the main machine are transmitted to the elastic member 120, the elastic member 120 is configured to be movable in the radial direction of the elastic coupling 100, thereby achieving the radial displacement compensation. In the present embodiment, the elastic element 120 is moved by a distance Y of 0 to 5mm or more in the radial direction of the elastic coupling 100, and thus can be widely applied to various environments. Of course, when both axial and angular displacements are present, the corrugated diaphragm assembly 130, and in particular the deformation segment 133, may also be movable in the radial direction of the elastomeric coupling 100, thereby achieving radial displacement compensation.

According to the elastic coupling 100 of the present invention, the elastic coupling 100 comprises the corrugated diaphragm assembly 130, the corrugated diaphragm assembly 130 comprises the deformation section 133 capable of generating elastic deformation, the deformation section 133 can be used as a displacement compensation mechanism, the structural advantages of large central displacement, good elasticity, etc. of the corrugated diaphragm assembly 130 are utilized to compensate the misalignment, impact displacement, etc. of the main machine (diesel engine 200) and the working device (gearbox 201), absorb the vibration transmitted from the diesel engine 200 or the propeller 202, the elastic coupling 100 can realize larger axial, angular and radial displacement compensation capability, has the functions of adjusting and improving the torsional vibration characteristic of the shafting, reduces the additional load of the bearings at the crankshaft of the diesel engine 200 and the gearbox 201, prolongs the service life of the bearings, and ensures the safe operation of the shafting, and the elastic coupling 100 provided by the invention has compact structure and convenient installation.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An elastomeric coupling, characterized in that it comprises:

an elastic element;

a first flange;

the supporting sleeve is connected with the first flange;

2. An elastic coupling according to claim 1, characterized in that the deformation section comprises at least two corrugations which are arranged in the radial direction of the elastic coupling and the curvatures of which are the same or different from each other.

3. An elastomeric coupling in accordance with claim 1 wherein said deformation section comprises at least one diaphragm configured as a circular ring or sector and arranged around said bearing sleeve in the circumferential direction of said undulating diaphragm assembly.

4. An elastomeric coupling in accordance with claim 1, wherein the diaphragm seat and the bearing sleeve are configured to be relatively movable in the axial direction of the elastomeric coupling to enable axial displacement compensation.

5. An elastic coupling according to claim 1, characterized in that the elastic element is configured to be movable in the radial direction of the elastic coupling for radial displacement compensation.

6. The elastomeric coupling of claim 1, wherein the undulating diaphragm assembly further comprises a protrusion configured as part of the bearing sleeve and extendable into the elastomeric element.

7. An elastomeric coupling in accordance with claim 6 wherein said protrusions are spaced from the radially inner surface of said elastomeric element, said support sleeve of said undulating diaphragm assembly being angularly offset from the central axis of said elastomeric coupling when said deformation segment is elastically deformed to effect angular displacement compensation.

8. An elastomeric coupling in accordance with claim 6 wherein said elastomeric element comprises at least one elastomer and a second flange for bonding adjacent said elastomer, said second flange comprising a side facing said bearing sleeve, said side of said second flange being closer to said bearing sleeve than a side of said projection.

9. An elastomeric coupling in accordance with claim 1 wherein said first flange comprises a first step, said bearing sleeve further comprising a second step, a radially inner surface of said second step abutting a radially outer surface of said first step.

10. The elastomeric coupling of claim 1, further comprising a connecting member and a pressure plate, wherein the first flange includes a flange hole, the bearing sleeve includes a bearing sleeve hole, the central axes of the flange hole and the bearing sleeve hole are both parallel to the central axis of the first flange, the pressure plate is disposed between the inner end of the deformation section and the first flange, and the connecting member is configured to connect the flange hole, the pressure plate, the inner end of the deformation section, and the bearing sleeve hole together.