CN111720453A - Coaxial counter-rotating flexible coupling suitable for underwater vehicle and assembling method thereof - Google Patents

Abstract

The invention provides a coaxial counter-rotating flexible coupling suitable for an underwater vehicle and an assembly method thereof, which relate to the technical field of underwater navigation equipment, can ensure that the coupling has certain flexibility while realizing coaxial counter-rotating and meets the requirements of angular displacement and radial displacement; the flexible coupling comprises an inner coupling and an outer coupling, wherein the inner coupling is nested inside the outer coupling and is coaxial with the outer coupling; the outer surface of the inner coupling is not in contact with the inner surface of the outer coupling; the inner shaft coupler and the outer shaft coupler respectively comprise a left half shaft coupler, a right half shaft coupler and a middle body, and two ends of the middle body are respectively flexibly connected with the left half shaft coupler and the right half shaft coupler; the structure of the intermediate body of the outer coupling is not a unitary structure. The technical scheme provided by the invention is suitable for the process of coaxial contra-rotating transmission.

Description

Coaxial counter-rotating flexible coupling suitable for underwater vehicle and assembling method thereof

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of underwater navigation equipment, in particular to a coaxial counter-rotating flexible coupling suitable for an underwater vehicle and an assembling method thereof.

[ background of the invention ]

In the field of underwater vehicles, a power part usually adopts a contra-rotating propeller mode to drive the underwater vehicle to move forward, and the contra-rotating propeller generates rotating moments in opposite directions when moving, so that the moving posture of the underwater vehicle is effectively balanced, and the rolling is avoided. The contra-rotating propeller is fixed through the contra-rotating shaft and then is connected with the contra-rotating motor to form a complete power output system.

The existing connecting scheme is that a motor shaft is rigidly connected with a power shaft, a coupler is not needed, the requirements on the motor and the matched power output installation precision and the machining precision are high, the defects of violent vibration, shaking, large noise and the like caused by inaccurate centering can be caused, and the fatigue damage of the connecting part can be caused by long-term use. And the requirement on the position precision of the motor and the output shaft can be greatly reduced through the connection of the contra-rotating flexible coupling.

The counter shaft is mainly used for an underwater vehicle and an aircraft, the rotating torque is balanced, the coaxial contra-rotating flexible coupling suitable for the underwater vehicle realizes nesting and coaxiality of an inner shaft and an outer shaft by improving the structure of the diaphragm coupling, the problem of overhigh assembling precision of the counter shaft and the contra-rotating rotor can be effectively solved, and the assembling difficulty is reduced.

Accordingly, there is a need to address the deficiencies of the prior art in order to address or mitigate one or more of the problems set forth above by developing a coaxial counter-rotating flexible coupling for use with an underwater vehicle and a method of assembling the same.

[ summary of the invention ]

In view of the above, the invention provides a coaxial counter-rotating flexible coupling suitable for an underwater vehicle and an assembling method thereof, which can enable the coupling to have certain flexibility while realizing coaxial counter-rotating and meet the requirements of angular displacement and radial displacement.

In one aspect, the invention provides a coaxial counter-rotating flexible coupling suitable for an underwater vehicle, which is characterized in that the flexible coupling comprises an inner coupling and an outer coupling, wherein the inner coupling is nested inside the outer coupling and is coaxial with the outer coupling; the outer surface of the inner coupling is not in contact with the inner surface of the outer coupling.

The above aspect and any possible implementation manner further provide an implementation manner, where the outer coupling includes an outer left half coupling, an outer right half coupling, and an outer intermediate body, and two ends of the outer intermediate body are respectively flexibly connected to the outer left half coupling and the outer right half coupling; the structure of the external intermediate body is not an integral structure.

The above aspect and any possible implementation manner further provide an implementation manner, wherein the outer middle body comprises a left half middle body and a right half middle body, and the left half middle body and the right half middle body are buckled together to form a hollow columnar structure.

The above aspect and any possible implementation manner further provide an implementation manner, wherein the left half middle body and the right half middle body are combined together through an annular fixing base when being buckled.

In the aspect and any possible implementation manner described above, a plurality of assembling holes facilitating assembling of the inner coupling are further provided on the outer left coupling half and the outer right coupling half of the outer coupling.

The above aspect and any possible implementation manner further provide an implementation manner, outer membrane groups are respectively disposed between the outer left half coupling and the outer intermediate body and between the outer right half coupling and the outer intermediate body, and the elasticity of the outer membrane groups enables the inner coupling to have flexibility, so as to meet the requirements of angular displacement and radial displacement.

The above aspects and any possible implementations further provide an implementation in which the inner coupling includes an inner left coupling half, an inner right coupling half, and an inner intermediate body; and two ends of the inner intermediate body are respectively flexibly connected with the inner left half coupling and the inner right half coupling.

The above aspect and any possible implementation manner further provide an implementation manner, inner diaphragm groups are respectively arranged between the inner left half coupling and the inner middle body and between the inner right half coupling and the inner middle body, and the inner coupling has flexibility by elasticity of the inner diaphragm groups, so as to meet requirements of angular displacement and radial displacement.

The above aspects and any possible implementation manners further provide an implementation manner, and the connection manner between the parts of the inner coupling or the outer coupling is a bolt, a gasket and a nut.

In another aspect, the invention provides an underwater vehicle, which is characterized in that the underwater vehicle uses the coaxial contra-rotating flexible coupling as described in any one of the above to realize coaxial contra-rotation of propellers; one end of the coaxial contra-rotating flexible coupling is connected with the contra-rotating motor through an inner shaft and an outer shaft which are nested, and the other end of the coaxial contra-rotating flexible coupling is connected with the front propeller and the rear propeller through splines.

In a further aspect, the present invention provides a method for assembling a coaxial counter-rotating flexible coupling for an underwater vehicle, characterized in that it is suitable for assembling a coaxial counter-rotating flexible coupling as described in any one of the above; the method comprises the following steps:

s1, connecting the left half coupling of the outer coupling with the outer shaft, and connecting the left half coupling of the inner coupling with the inner shaft;

s2, respectively connecting the right half couplers of the inner coupler and the outer coupler with the splines of the rear propeller and the front propeller;

s3, mounting fastening screws of the inner coupling into corresponding assembly holes formed in the side wall of the outer coupling, and inserting the fastening screws out of the end faces of the left half coupling and the right half coupling of the inner coupling;

s4, sleeving two membrane groups of the inner coupler on corresponding fastening screws;

s5, sleeving the two diaphragm groups and the fixed base of the outer coupler on the intermediate body of the inner coupler, and connecting the intermediate body of the inner coupler with a fastening screw to complete the assembly of the inner coupler;

s6, respectively shifting the two diaphragm groups of the outer coupler to the end parts of the left half coupler and the right half coupler of the outer coupler, and inserting the two diaphragm groups into fastening bolts, wherein the fixed base is positioned between the two diaphragm groups;

s7, sleeving the left half intermediate body and the right half intermediate body of the outer coupling intermediate body outside the inner coupling intermediate body, butting, and respectively connecting with a fixed base to realize the assembly of the outer coupling intermediate body;

the sequence of S1-S7 can be adjusted according to the actual assembly condition.

Compared with the prior art, the invention can obtain the following technical effects: the coaxial counter-rotating coupling can be obtained, has flexibility, and can meet the requirements of angular displacement and radial displacement; the transmission scheme of the short shaft and the counter-rotating coupling can be used for replacing the traditional long shaft transmission, so that the transmission scheme has wide application and can improve the space.

Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a perspective view of a JM II type diaphragm coupling provided in accordance with one embodiment of the present invention;

fig. 2 is a schematic diagram of a diaphragm structure of a diaphragm coupling according to an embodiment of the present invention;

FIG. 3 is a diagram of a girth-style film sheet according to one embodiment of the present invention;

FIG. 4 is a general schematic view of a coaxial counter-rotating flexible coupling provided by one embodiment of the present invention;

FIG. 5 is a schematic diagram of coaxial contra-rotation of the coupling provided by one embodiment of the present invention;

FIG. 6 is a schematic view of an outer coupling according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an intermediate structure provided by one embodiment of the present invention;

FIG. 8 is a schematic view of an outer coupling connection provided by one embodiment of the present invention;

FIG. 9 is a schematic illustration of an inner coupling construction provided in accordance with one embodiment of the present invention;

FIG. 10 is an exploded view of an inner coupling and intermediate connection provided in accordance with one embodiment of the present invention;

FIG. 11 is a block diagram of a special allen key according to an embodiment of the present invention;

FIG. 12 is a schematic view of the assembled coupling shown in a fully assembled state according to one embodiment of the present invention;

fig. 13 is a combination of a middle body and a fixing base according to an embodiment of the present invention.

Wherein, in the figure:

1. a JM II type coupling left half coupling; 2. a right half coupling of a JM II type coupling; 3. JM II type coupling intermediate; 4. JM II type coupling diaphragm group; 5. a connecting portion; 6. an outer shaft; 7. an inner shaft; 8. an outer coupling; 9. an inner coupling; 10. an aircraft hull; 11. a front propeller; 12. a rear propeller; 81. an outer left half coupling; 82. an outer right half coupling; 83. an external intermediate; 84. an outer membrane group; 85. an external bolt; 86. a long round hole; 87. a fixed base; 831. a left intermediate; 832. a right intermediate; 13. a washer, 14, a spring washer; 15. fastening screws; 16. fastening a nut; 17. a sleeve; 91. an inner left half coupling; 92. an inner right half coupling; 93. an internal intermediate; 94. an inner membrane group; 95. an inner bolt set.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention 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.

The diaphragm coupling has the advantages of a rigid coupling and an elastic coupling, the contra-rotating flexible coupling is based on the special structure of the diaphragm coupling, two special diaphragm couplings are nested, namely the inner coupling and the outer coupling are nested, the two couplings are not contacted after nesting, and the connection transmission is realized when the contra-rotating shaft is contra-rotated. The shaft coupling adapts to the misalignment of the axis through the flexibility of the diaphragm, and does not need lubrication; the adaptability of misalignment is high, and the device can adapt to radial deviation of 1 mm; the device operates under angular displacement, has high transmission efficiency, energy conservation and strong adaptability, and can safely operate under the displacement of 1-2 degrees; the vibration absorption is good, no obvious vibration exists at the rotating speed of 10000rad/min, and the vibration absorption device is suitable for the use conditions of most working conditions.

The invention is divided into two parts: the structure of each part of the inner coupler and the outer coupler is modified on the basis of the configuration of a JM II J type diaphragm coupler, so that the inner coupler 9 and the outer coupler 8 can be nested at the same axial position and are not in contact with each other. The outer coupler 8 is provided with long round holes 86 in the side wall, the radius of the long round holes is larger than 7mm, the center distance of the holes is larger than 20mm, the long round holes 86 are symmetrically distributed and are positioned close to the end face of the large opening, the number of the long round holes is larger than 2, and the long round holes 86 are used for assembling the inner coupler 9 so as to realize the contra-rotating connection which allows radial and angular offset; in dimensional terms, the inner cavity diameter D of the outer coupling 8 needs to be at least 3mm larger than the largest outer diameter D of the inner coupling 9. The structure of the inner coupler 9 can adopt the structure of the existing JM II J type diaphragm coupler (the size needs to be adjusted to be matched with the size of the outer coupler), and the outer coupler 8 needs to be properly modified on the basis of the existing coupler.

1. Configuration selection:

the diaphragm coupling is limited by a double-shaft contrarotating working mode, mature solutions are provided for displacement compensation and high-speed working conditions at present, and comparison shows that the diaphragm coupling meets part of design requirements. The diaphragm coupling compensates the relative displacement of the two shafts by the elastic deformation of the diaphragm, and is a high-performance flexible coupling of a metal strong element. The mechanical industry standard JM/T9147-1999 specifies four main structural forms of the diaphragm coupling, of which the JM ij structural form is suitable for high-speed and high-torque applications, and therefore the selection of the JM ij structural form is based on, as shown in fig. 1.

2. Selecting a membrane:

the working principle of the diaphragm coupling is that torque is input from a left half shaft and is transmitted to a diaphragm group through a high-strength bolt, and the diaphragm is mainly subjected to radial tensile stress and axial compressive stress in the operation process, and bending stress and high cycle fatigue stress generated in three-way displacement compensation. The diaphragm set is transferred to the intermediate shaft by high-strength bolts and in the same way to the right half shaft. Common configurations for diaphragms are spoke, ring, link, polygon, and girth, as shown in FIG. 2.

The prior multi-edge type and the girdling type are commonly used, wherein the girdling type has nearly equal strength, good flexibility, low stress around bolt holes, small centrifugal force, removal of redundant mass and contribution to application at high rotating speed. The thickness of the diaphragm is 0.2-0.6mm, and the diaphragm groups are formed by overlapping a certain number of diaphragms, so the girdling type diaphragm is selected in the scheme.

3. The overall structure is as follows:

the coaxial contra-rotating flexible coupling is mainly divided into two parts, namely an outer coupling 8 and an inner coupling 9, wherein the outer coupling is provided with a long round hole 86 for assembling the inner coupling, the front part and the rear part of the assembled outer coupling are respectively connected with an outer shaft 6 and a front propeller 11 through splines, the front part and the rear part of the assembled inner coupling are respectively connected with an inner shaft 7 and a rear propeller 12 through splines, the inner shaft 7 is sleeved in the outer shaft 6 and is not contacted with the outer shaft 6, and all parts are coaxial after assembly, as shown in figure 4; the inner shaft 7 and the outer shaft 6 are used as the output of the contra-rotating motor, coaxially contra-rotating, can realize the transmission of torque in different directions, and drive the propeller to contra-rotate, as shown in fig. 5. Coaxial contrarotation means that the rotating axes of the inner shaft coupler and the outer shaft coupler are the same, the outer shaft coupler is connected with the outer shaft, the inner shaft coupler is connected with the inner shaft, the inner shaft and the outer shaft are coaxial, and the inner shaft is sleeved in the outer shaft.

4. Outer coupling structure:

the outer coupling 8 is composed of an outer left half coupling 81, an outer membrane sheet group 84, an outer intermediate body 83, a bolt group, and an outer right half coupling 82, as shown in fig. 6. The outer coupling is modified according to the JM II J type diaphragm coupling: 1, drilling a long round hole 86 on the side wall of an outer coupler 8, wherein the radius is larger than 7mm, the hole center distance is larger than 20mm, and the position is close to the end face of a large opening; 2, the inner cavity of the intermediate body of the JM ij type diaphragm coupling is enlarged to be larger than the maximum outer diameter of the inner coupling 9, and the outer intermediate body 83 is divided into two parts, i.e., the left part and the right part on average. The two changes are to realize the smooth assembly of the inner coupling and facilitate the nested assembly of the inner coupling and the outer coupling, and the structure of the outer coupling 8 is shown in fig. 7. The left half coupling, the right half coupling and the middle body of the outer coupling 8 are connected through a fastening screw 15, a gasket 13, a diaphragm group and a fastening nut 16, wherein a hexagonal head of the screw is in contact with the coupling, and the fastening nut, the gasket and the diaphragm group are in contact. The diaphragm group is formed by arraying a plurality of diaphragms of 0.2-0.6mm, and flexible connection is realized through the elasticity of the diaphragm group, so that the requirements of angular displacement and radial displacement are met, as shown in figure 8.

5. The inner coupling structure:

the inner coupling 9 is composed of an inner left half coupling 91, an inner diaphragm group 94, an inner middle body 93, a bolt group and an inner right half coupling 92, as shown in fig. 9. The left half coupling, the right half coupling and the intermediate body of the inner coupling 9 are connected through a fastening screw, a gasket, a sleeve, a diaphragm group and a fastening nut, the inner coupling 9 is slightly modified according to the JM II type diaphragm coupling, and the outer diameter of the inner coupling is smaller as the inner coupling is required to be nested inside the outer coupling, extends out of the base through the sleeve 17 and is fixed through the fastening nut, as shown in figure 10. The sleeve 17 acts as a high shim.

6. The assembly process of the counter-rotating coupling comprises the following steps:

because the inner coupler 9 of the contra-rotating coupler is required to be nested inside the outer coupler 8, certain difficulty exists in assembly. If the inner aperture of the outer coupler 8 is large and the outer coupler is installed in the vertical direction, the inner coupler 9 can directly go deep into the inner portion of the outer coupler 8, and centering is only needed. The following is the general installation of the coupling after the inner shaft 7, the outer shaft 6, the front propeller 11 and the rear propeller 12 are installed in place (as shown in table 1):

TABLE 1 Assembly Process for coaxial counter-rotating Flexible couplings

The sequence of the steps in table 1 is not fixed, and can be adjusted according to actual conditions.

7. Other descriptions:

the coaxial contra-rotating flexible coupling needs to design the size of the coupling according to the size of a contra-rotating shaft, can not be assembled and directly installed due to the special structure of the coaxial contra-rotating flexible coupling, the length of the coupling needs to be determined according to the specific position relation of the two contra-rotating shafts, and the coaxial contra-rotating flexible coupling is installed and used on site and is not required to be disassembled as much as possible after being installed. The middle body of the outer coupling consists of a left half body and a right half body, a fixed base needs to be manufactured in order to prevent deformation, the middle body is butted in the middle body before the coupling is assembled, and the middle body is fastened by screws, gaskets 13 and spring gaskets 14, as shown in figure 13.

The key point of the invention is the special structure of the counter-rotating coupling, the inner coupling is nested in the middle of the outer coupling, the inner coupling and the outer coupling are not contacted, the coupling has certain flexibility through the elasticity of the diaphragm, and the transmission allows certain angular displacement and radial displacement. The middle body of the outer coupling is divided into two parts for installation, the side walls of the left coupling half and the right coupling half are provided with assembly holes (namely oblong holes 86), a special assembly tool 'special inner hexagonal fixed wrench' and a special assembly process are designed aiming at the assembly of the couplings, and the assembly can be completed only according to the process.

The advantages of the invention are two: firstly, the transmission of the rotating shaft at present only has a scheme of rigid direct connection, and does not have an example of flexible connection, and the coaxial counter-rotating coupling does not exist in the market at present, so that the invention fills the blank; secondly, the application scene of the coaxial contra-rotating flexible coupling is applied to equipment with contra-rotating rotors of an underwater vehicle unmanned aerial vehicle and the like, the transmission scheme of a short shaft and a contra-rotating coupling can be used for replacing long shaft transmission, and the coaxial contra-rotating flexible coupling has wide application and improvement space in the future.

The coaxial contra-rotating flexible coupling suitable for the underwater vehicle and the assembling method thereof provided by the embodiment of the application are described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims (10)

1. The coaxial counter-rotating flexible coupling suitable for the underwater vehicle is characterized by comprising an inner coupling and an outer coupling, wherein the inner coupling is nested inside the outer coupling and is coaxial with the outer coupling; the outer surface of the inner coupling is not in contact with the inner surface of the outer coupling.

2. The coaxial counter-rotating flexible coupling suitable for underwater vehicles according to claim 1, wherein the outer coupling comprises an outer left half coupling, an outer right half coupling and an outer middle body, and two ends of the outer middle body are respectively flexibly connected with the outer left half coupling and the outer right half coupling; the structure of the external intermediate body is not an integral structure.

3. The coaxial counter-rotating flexible coupling for underwater vehicles according to claim 2, characterized in that said outer intermediate body comprises a left half intermediate body and a right half intermediate body, which are fastened together to form a hollow cylindrical structure.

4. The coaxial counter-rotating flexible coupling for underwater vehicles according to claim 3, characterized in that said left half-middle body and said right half-middle body are assembled together by means of an annular fixed base when they are fastened.

5. The coaxial counter-rotating flexible coupling suitable for underwater vehicles according to claim 2, wherein the outer left coupling half and the outer right coupling half of the outer coupling are provided with a plurality of assembling holes on the side wall for facilitating the assembling of the inner coupling.

6. The coaxial counter-rotating flexible coupling applicable to underwater vehicles according to claim 2, characterized in that outer membrane groups are respectively arranged between the outer left half coupling and the outer intermediate body and between the outer right half coupling and the outer intermediate body, and the inner coupling is made flexible by the elasticity of the outer membrane groups, so as to meet the requirements of angular displacement and radial displacement.

7. The coaxial counter-rotating flexible coupling for underwater vehicles according to claim 1, characterized in that said inner coupling comprises an inner left half coupling, an inner right half coupling and an inner intermediate body; and two ends of the inner intermediate body are respectively flexibly connected with the inner left half coupling and the inner right half coupling.

8. The coaxial counter-rotating flexible coupling applicable to underwater vehicles according to claim 7, characterized in that inner diaphragm groups are respectively arranged between the inner left half coupling and the inner middle body and between the inner right half coupling and the inner middle body, and the inner coupling is made to have flexibility by the elasticity of the inner diaphragm groups, so as to meet the requirements of angular displacement and radial displacement.

9. An underwater vehicle, characterized in that it uses a coaxial contra-rotating flexible coupling according to any of claims 1-8 to achieve coaxial contra-rotation of propellers; one end of the coaxial contra-rotating flexible coupling is connected with the contra-rotating motor through an inner shaft and an outer shaft which are nested, and the other end of the coaxial contra-rotating flexible coupling is connected with the front propeller and the rear propeller through splines.

10. A method of assembling a coaxial contra-rotating flexible coupling for use in an underwater vehicle, characterized in that the method of assembling is suitable for the assembly of a coaxial contra-rotating flexible coupling according to any of claims 1 to 8; the method comprises the following steps:

s1, connecting the left half coupling of the outer coupling with the outer shaft, and connecting the left half coupling of the inner coupling with the inner shaft;

s2, respectively connecting the right half couplers of the inner coupler and the outer coupler with the splines of the rear propeller and the front propeller;

s3, mounting fastening screws of the inner coupling into corresponding assembly holes formed in the side wall of the outer coupling, and inserting the fastening screws out of the end faces of the left half coupling and the right half coupling of the inner coupling;

s4, sleeving two membrane groups of the inner coupler on corresponding fastening screws;

s5, sleeving the two diaphragm groups and the fixed base of the outer coupler on the intermediate body of the inner coupler, and connecting the intermediate body of the inner coupler with a fastening screw to complete the assembly of the inner coupler;

s6, respectively shifting the two diaphragm groups of the outer coupler to the end parts of the left half coupler and the right half coupler of the outer coupler, and inserting the two diaphragm groups into fastening bolts, wherein the fixed base is positioned between the two diaphragm groups;

s7, sleeving the left half intermediate body and the right half intermediate body of the outer coupling intermediate body outside the inner coupling intermediate body, butting, and respectively connecting with a fixed base to realize the assembly of the outer coupling intermediate body;

the sequence of S1-S7 can be adjusted according to the actual assembly condition.

Images