CN217355280U - Flexible connecting device - Google Patents

Abstract

The utility model provides a flexible coupling device, including the primary shaft, the secondary shaft and connect the shell, the primary shaft is fixed to be set up on connecting the shell, and the primary shaft has first end, has butt portion in connecting the shell, and butt portion is located the primary shaft along axial extension, the secondary shaft with connect the shell key-type connection, the secondary shaft has the second end that is located connecting the shell, the second end is relative with butt portion, and the second end passes through the elastic component with butt portion and is connected. The flexible connecting device solves the problem that rigid connection cannot compensate relative offset of axes of two connected shafts, improves torsional rigidity, reduces impact peak load, plays a role in buffering and damping, and has an overload safety protection function.

Description

Flexible connecting device

Technical Field

The present disclosure relates to the field of connector technology, and more particularly, to a flexible coupling device.

Background

In modern mechanical production, especially in the experimental occasion of transmission moment of torsion such as SOx/NOx control, pipeline, wind-tunnel, need use the coupler usually to connect the diaxon, and the pin key that is used commonly connects is a rigid connection, to some needs compensation linked with diaxon axis relative skew, reduces and strikes peak load, and buffering shock attenuation has always to be out of use simultaneously concurrently and has the occasion of overload safety protection function.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a flexible coupling device to solve at least the above technical problems occurring in the prior art.

The flexible coupling device comprises a first shaft, a second shaft and a connecting shell, wherein the first shaft is fixedly arranged on the connecting shell, the first shaft is provided with a first end, the connecting shell is internally provided with an abutting part, the abutting part is positioned on an axial extension line of the first shaft, the second shaft is in key connection with the connecting shell, the second shaft is provided with a second end positioned in the connecting shell, the second end is opposite to the abutting part, and the second end is connected with the abutting part through an elastic piece.

In an embodiment, the abutting portion has a first hole coaxial with the first shaft, the second end has a second hole, and two ends of the elastic member are respectively located in the first hole and the second hole.

In an embodiment, the second shaft has a spline shaft section, and a key groove is arranged in the connecting shell, and the spline shaft section is matched with the key groove.

In an embodiment, the connecting shell includes a first end surface and a second end surface opposite to each other, a shaft hole is disposed in the connecting shell, the shaft hole extends from the opening of the first hole to the second end surface, the key groove is disposed near the second end surface, and an inner diameter of the shaft hole is greater than an inner diameter of the first hole.

In an implementation manner, the connecting shell is located in the shaft hole portion, a groove is formed by extending towards the outside of the connecting shell by taking a central axis of the shaft hole as a center, a protrusion is formed between the groove and the key groove, and the quincunx spline shaft section abuts against the protrusion.

In one embodiment, the second shaft has an exposed section located outside the coupling housing, the exposed section having a proximal end adjacent the coupling housing, the proximal end being secured to the coupling housing by a fastener.

In an embodiment, the fastening element includes a fastening nut, and the second end surface is provided with a boss, and the fastening nut is in threaded connection with the boss.

In an embodiment, the boss has an outer surface far away from the second end surface, an end surface of the quincunx key shaft section near the proximal end is flush with the outer surface, and the exposed section extends from the outer surface.

In an embodiment, the first shaft is welded to the first end face, or the first shaft is flanged to the first end face.

In one embodiment, the first shaft and the connecting shell are integrally formed.

In this disclosure, because flexible coupling device's the fixed setting of primary shaft is on connecting the shell, the secondary shaft with connect the shell key-type connection, the inside butt portion of connecting the shell simultaneously is connected through the elastic component with the second end of secondary shaft, change rigid connection for flexible connection, this flexible design has solved the unable compensation of rigid connection and has been linked the problem of the relative skew of axis of primary shaft and secondary shaft, the torsional rigidity has been promoted, impact peak load has been reduced, the cushioning effect has been played, overload safety protection function has concurrently simultaneously.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

FIG. 1 illustrates a perspective cross-sectional view of an exemplary embodiment flexible coupling device according to the present disclosure;

FIG. 2 illustrates a cross-sectional schematic view of one exemplary embodiment of a flexible coupling of the present disclosure;

FIG. 3 illustrates a schematic view of the internal structure of a connection housing of an exemplary embodiment flexible coupling device of the present disclosure;

FIG. 4 illustrates a second axial structural view of a flexible coupling according to an exemplary embodiment of the present disclosure.

The reference numbers in the figures illustrate: 1. a first shaft; 2. a second shaft; 3. a connecting shell; 4. an elastic member; 5. a fastener; 11. a first end; 21. a second end; 211. a second hole; 22. a quincunx spline shaft section; 23. an exposed section; 31. an abutting portion; 311. a first hole; 32. a keyway; 33. a shaft hole; 34. a groove; 35. a protrusion; 36. a first end face; 37. a second end face; 371. and (4) a boss.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 4, the flexible coupling device according to one embodiment of the present disclosure includes a first shaft 1, a second shaft 2 and a connecting shell 3, the first shaft 1 is fixedly disposed on the connecting shell 3, an abutting portion 31 in the connecting shell 3 is disposed on an extension line of the first shaft 1 along an axial direction, the second shaft 2 is in key connection with the connecting shell 3, a second end 21 of the second shaft 2 in the connecting shell 3 is opposite to the abutting portion 31, and the second end 21 is connected to the abutting portion 31 through an elastic member 4.

In this embodiment, because the first shaft 1 of the flexible coupling device is fixedly arranged on the connecting shell 3, the second shaft 2 is connected with the connecting shell 3 in a key mode, meanwhile, the internal abutting part 31 of the connecting shell 3 is connected with the second end 21 of the second shaft 2 through the elastic part 4, rigid connection is converted into flexible connection, the flexible design solves the problem that the rigid connection cannot compensate the relative deviation of the axes of the connected first shaft 1 and second shaft 2, the torsional rigidity is improved, the impact peak load is reduced, the buffering and shock absorption effects are achieved, the overload safety protection function is achieved, and the flexible coupling device has excellent durability in both forward and reverse rotation and inching. The elastic part 4 can be a spring made of 60Si2MnA, so that the mechanical property and chemical composition of the elastic part 4 meet the GB/T1222-2007 standard, and the elastic part is quenched and tempered.

Example 1

The connecting shell 3 comprises a first end face 36 and a second end face 37 which are opposite, the first shaft 1 is fixedly connected with the first end face 36 of the connecting shell 3 by welding or through a flange and the like, and the first end 11 of the first shaft 1 does not extend into the connecting shell 3. The second shaft 2 has a second end 21 located in the connecting shell 3, a quincuncial key shaft section 22 and an exposed section 23 located outside the connecting shell 3, a first hole 311 is formed in the abutting portion 31 in the connecting shell 3, the first hole 311 is ensured to be coaxial with the first shaft 1, a second hole 211 is formed in the second end 21 of the second shaft 2, the second hole 211 is arranged coaxially with the second shaft 2, and two ends of the elastic piece 4 are respectively installed in the first hole 311 and the second hole 211. The connecting shell 3 is provided with a key groove 32, the key groove 32 is arranged near the second end surface 37, and the quincuncial key shaft section 22 is matched with the key groove 32. In the connecting shell, a shaft hole 33 is formed to extend from the opening of the first hole 311 to the second end surface 37 of the connecting shell 3, the inner diameter of the shaft hole 33 is larger than that of the first hole 311, and the second end 21 of the second shaft 2 is matched with the shaft hole 33. The exposed section 23 of the second shaft 2 is defined as a proximal end near one end of the connecting shell 3, and the proximal end is fixed to the connecting shell 3 by a fastener 5.

In this embodiment, the first shaft 1 and the connecting shell 3 may also be integrally formed. It can be understood that if the first shaft 1 and the connecting shell 3 are integrally formed, the production efficiency can be improved during production, but when the first shaft 1 or the connecting shell 3 is partially damaged, the whole shaft needs to be replaced, so that the use cost is increased; if the first shaft 1 is fixedly connected with the connecting shell 3, the degree of freedom of use can be improved. A gap is formed between the second end 21 of the second shaft 2 and the abutting part 31, and the quincunx spline shaft section 22 can adopt a quincunx spline shaft with a multi-tooth structure such as six teeth or nine teeth, so that the key groove 32 in the connecting shell 3 is correspondingly matched with the key groove. The elastic part 4 is arranged in the connecting shell 3, so that the vibration can be absorbed, the radial compensation is provided, and the angular and axial deviation compensation is also provided, so that the coaxiality of the whole device is ensured. Rigid connection conversion with the round pin key is for flexible connection, and this flexible design has high sensitivity, zero gyration clearance and hysteresis little characteristics, has solved rigid connection and can't compensate by the relative skew problem of antithetical couplet diaxon axis, has promoted torsional rigidity, has reduced the impact peak load, has played the effect of buffering shock attenuation, has overload safety protection function concurrently simultaneously, no matter to just reversing or the inching etc. all have excellent durability.

Example 2

The connecting shell 3 comprises a first end face 36 and a second end face 37 which are opposite, the first shaft 1 is fixedly connected with the first end face 36 of the connecting shell 3 by welding or through a flange and the like, and the first end 11 of the first shaft 1 does not extend into the connecting shell 3. The second shaft 2 is provided with a second end 21 located in the connecting shell 3, a quincunx key shaft section 22 and an exposed section 23 located outside the connecting shell 3, a first hole 311 is formed in the abutting part 31 in the connecting shell 3, the first hole 311 is guaranteed to be coaxial with the first shaft 1, a second hole 211 is formed in the second end 21 of the second shaft 2, the second hole 211 and the second shaft 2 are coaxially arranged, and two ends of the elastic piece 4 are installed in the first hole 311 and the second hole 211 respectively. The connecting shell 3 is provided with a key groove 32, the key groove 32 is arranged near the second end surface 37, and the quincunx key shaft section 22 is matched with the key groove 32. In the connecting shell 3, a shaft hole 33 is formed to extend from the opening of the first hole 311 to the second end surface 37 of the connecting shell 3, the inner diameter of the shaft hole 33 is larger than that of the first hole 311, and the second end 21 of the second shaft 2 is matched with the shaft hole 33. The exposed end 23 of the second shaft 2 near the connecting shell 3 is defined as a proximal end, and the proximal end is fixed on the connecting shell 3 through a fastener 5.

In addition, in the shaft hole 33 portion in the connection shell 3, a groove 34 is provided to extend to the outside of the connection shell 3 with the central axis of the shaft hole 33 as the center, and a protrusion 35 is formed between the groove 34 and the key groove 32, so that the quincunx key shaft section 22 can abut against the protrusion 35.

In this embodiment, the provision of the recess 34 in the coupling housing 3 allows the load to be relieved and reduces the friction between the shaft and the shaft hole 33, increasing the service life of the device while facilitating disassembly. The first shaft 1 and the connecting shell 3 can also be integrally formed, a gap is formed between the second end 21 of the second shaft 2 and the abutting part 31, and the plum spline shaft section 22 can adopt a plum spline shaft with a multi-tooth structure such as six teeth or nine teeth, so that the key groove 32 in the connecting shell 3 is correspondingly matched with the plum spline shaft. The arrangement of the elastic element 4 is the same as that of the previous embodiment, so the beneficial effects are also the same, and the description thereof is omitted.

Example 3

The connecting shell 3 includes a first end face 36 and a second end face 37 opposite to each other, the first shaft 1 is fixedly connected to the first end face 36 of the connecting shell 3 by welding or by means of a flange, etc., the first end 11 of the first shaft 1 extends into the connecting shell 3, and a first hole 311 is provided in the first end 11 to ensure that the first hole 311 is coaxial with the first shaft 1, where the first end 11 corresponds to the above-mentioned abutting portion 31. The second shaft 2 is provided with a second end 21 positioned in the connecting shell 3, a quincunx key shaft section 22 and an exposed section 23 positioned outside the connecting shell 3, a second hole 211 is formed in the second end 21 of the second shaft 2, the second hole 211 and the second shaft 2 are coaxially arranged, and two ends of the elastic piece 4 are respectively installed in the first hole 311 and the second hole 211. The connecting shell 3 is provided with a key groove 32, the key groove 32 is arranged near the second end surface 37, and the quincunx key shaft section 22 is matched with the key groove 32. In the connecting shell 3, a shaft hole 33 is formed to extend from the opening of the first hole 311 to the second end surface 37 of the connecting shell 3, the inner diameter of the shaft hole 33 is larger than that of the first hole 311, and the second end 21 of the second shaft 2 is matched with the shaft hole 33. The exposed end 23 of the second shaft 2 near the connecting shell 3 is defined as a proximal end, and the proximal end is fixed on the connecting shell 3 through a fastener 5.

Further, in the shaft hole 33 portion in the connection shell 3, a groove 34 is provided to extend to the outside of the connection shell 3 with the central axis of the shaft hole 33 as the center, and a protrusion 35 is formed between the groove 34 and the key groove 32, so that the quincunx key shaft section 22 can abut against the protrusion 35.

In this embodiment, the first shaft 1 and the connecting shell 3 may also be integrally formed, and the first hole 311 may also be provided in the connecting shell 3 integrally with the connecting shell 3 (refer to embodiments 1 and 2). A gap exists between the second end 21 and the first end 11, and the quincuncial key shaft section can adopt a quincuncial key shaft with a multi-tooth structure such as a six-tooth structure or a nine-tooth structure, so that the key groove 32 in the connecting shell 3 is correspondingly matched with the key groove. Because the first shaft stretches into the connecting shell, the distance between the first shaft and the second shaft is reduced, the problem of relative offset of the axes of the first shaft and the second shaft can be better compensated, the arrangement of the elastic part 4 is the same as the structure principle of the previous embodiment, and therefore the beneficial effects are also the same, and repeated description is omitted.

Example 4

According to any one of the above embodiments, the mentioned fastening device 5 may specifically adopt a fastening nut, a boss 371 is provided on the second end surface 37 of the connecting shell 3, the boss 371 has an outer surface far away from the second end surface 37, an end surface of the quincuncial key shaft section 22 close to the proximal end is flush with the outer surface, the fastening nut is in threaded connection with the boss 371, the exposed section 23 extends from the outer surface, and the use is simple and convenient. It will be appreciated that the fasteners 5 include, but are not limited to, the use of a fastening nut that, in a particular design application, secures the second shaft 2 to the coupling housing 3 without loosening the exposed segment 23. In addition, the elastic element 4 mentioned in any of the above embodiments may be a spring made of 60Si2MnA, and the mechanical properties and chemical components of the spring are ensured to meet the GB/T1222-2007 standard, and quenching and tempering are performed on the spring, or other elastic elements 4 meeting the use conditions may be used, which is not limited to the above.

In the present disclosure, the flexible coupling device in any of the above embodiments may be applied to any experiment related to torque transmission, such as desulfurization and denitrification, pipelines, wind tunnels, etc., to compensate for the relative offset of the axes of the two shafts to be coupled, to improve the torsional rigidity, to reduce the impact peak load, to play a role in buffering and damping, and to have the overload safety protection function, and to have excellent durability in both forward and reverse rotation, inching, etc.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the orientation terms is generally based on the orientation or positional relationship shown in the drawings, and is for convenience only to facilitate the description of the present disclosure and to simplify the description, and in the case of not having been stated to the contrary, these orientation terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be taken as limiting the scope of the present disclosure; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be oriented at 0 at various other angles (e.g., rotated 90 degrees or at other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in other sequences than those illustrated or described herein.

The present disclosure has been illustrated by the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the present disclosure to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, and that many variations and modifications may be made in light of the teaching of the present disclosure, all of which fall within the scope of the claimed disclosure. The scope of the disclosure is defined by the appended claims and equivalents thereof.

Claims (10)

1. The flexible coupling device is characterized by comprising a first shaft (1), a second shaft (2) and a connecting shell (3), wherein the first shaft (1) is fixedly arranged on the connecting shell (3), the first shaft (1) is provided with a first end (11), an abutting part (31) is arranged in the connecting shell (3), the abutting part (31) is positioned on an axial extension line of the first shaft (1), the second shaft (2) is in key connection with the connecting shell (3), the second shaft (2) is provided with a second end (21) which is positioned in the connecting shell (3), the second end (21) is opposite to the abutting part (31), and the second end (21) is connected with the abutting part (31) through an elastic piece (4).

2. Flexible coupling according to claim 1, characterized in that the abutment (31) is provided with a first hole (311) coaxial with the first shaft (1) and the second end (21) is provided with a second hole (211), the two ends of the elastic element being located respectively in the first hole (311) and in the second hole (211).

3. Flexible coupling according to claim 2, characterized in that the second shaft (2) has a plum-spline shaft section (22), in which connection shell (3) a key groove (32) is provided, which plum-spline shaft section (22) cooperates with the key groove (32).

4. The flexible coupling device according to claim 3, characterized in that the connection housing (3) comprises a first end face (36) and a second end face (37) opposite to each other, in that a shaft hole (33) is provided in the connection housing (3), the shaft hole (33) extending from the aperture of the first hole (311) to the second end face (37), the key groove (32) being provided near the second end face (37), the inner diameter of the shaft hole (33) being larger than the inner diameter of the first hole (311).

5. Flexible coupling according to claim 4, characterized in that the connection housing (3) is provided with a groove (34) extending outside the connection housing (3) around the central axis of the shaft hole (33) in the shaft hole (33), a protrusion (35) is formed between the groove (34) and the key groove (32), and the quincunx shaft section (22) abuts against the protrusion (35).

6. Flexible coupling device according to claim 4, characterized in that the second shaft (2) has an exposed section (23) outside the connecting shell (3), the exposed section (23) having a proximal end near the connecting shell (3), the proximal end being fixed to the connecting shell (3) by means of a fastener (5).

7. Flexible coupling device according to claim 6, characterized in that the fastening element (5) comprises a fastening nut, which is provided with a projection (371) on the second end face (37), which fastening nut is in threaded connection with the projection (371).

8. The flexible coupling device according to claim 7, characterized in that the boss (371) has an outer surface remote from the second end surface (37), an end surface of the quincunx shaft segment (22) near the proximal end being flush with the outer surface, the exposed segment (23) protruding from the outer surface.

9. Flexible coupling according to any of claims 4-8, characterized in that the first shaft (1) is welded to the first end surface (36) or that the first shaft (1) is flanged to the first end surface (36).

10. Flexible coupling according to claim 1, characterized in that the first shaft (1) is integrally formed with the connection housing (3).

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