CN221195804U - Coupling with prevent function of flying - Google Patents

Abstract

The utility model provides a coupler with a flying prevention function, which belongs to the technical field of couplers and comprises a first coupler, a middle coupler and a second coupler which are sequentially connected along the axial direction of the coupler, wherein a connecting sleeve is arranged between the first coupler and the middle coupler and between the second coupler and the middle coupler, a diaphragm group is arranged between the connecting sleeve and the middle coupler, the middle coupler comprises two flange plates and a middle pipe connected between the two flange plates, the flange plates are in plug-in fit with middle holes of the middle pipe, the end face of the middle pipe is in welded connection with the flange plates to form a welding seam molten pool, the depth direction of the welding seam molten pool is parallel to the radial direction of the middle coupler, a limiting ring is arranged at one end of the connecting sleeve, facing the flange plates, of the first coupler and the second coupler, and the limiting ring is sleeved on the periphery of the connecting sleeve.

Description

Coupling with prevent function of flying

Technical Field

The utility model belongs to the technical field of couplings, and particularly relates to a coupling with a fly-preventing function.

Background

The diaphragm coupling is formed by overlapping a plurality of groups of diaphragms (stainless steel thin plates) with bolts in a staggered way and two half couplings, and each group of diaphragms is divided into connecting rods and whole pieces with different shapes. The diaphragm coupler compensates the relative displacement of the two shafts connected by the elastic deformation of the diaphragm, is a high-performance metal strong element flexible coupler, does not need lubricating oil, has compact structure, high strength, long service life, no rotary gap, no influence of temperature and greasy dirt, has the characteristics of acid resistance, alkali resistance and corrosion resistance, and is suitable for shafting transmission in high-temperature, high-speed and corrosive medium working condition environments.

The coupling in the existing market is limited in length, the requirement of long-span transmission distance cannot be met, the number of connecting parts between an input end and an output end is required to be increased or a bearing supporting structure is independently designed under the condition that the distance span is long, the transmission efficiency and the processing precision are reduced, the risk of breaking and flying out exists in the use process, and the safety is low.

Disclosure of utility model

The embodiment of the utility model provides a coupler with a fly-proof function, and aims to solve the technical problems that the existing coupler suitable for long spans is broken and flies out when in use, and the safety is low.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a shaft coupling with prevent function flies, including first shaft coupling, middle joint and the second shaft coupling of connecting in order along self axial, first shaft coupling with between the middle joint, the second shaft coupling with all be equipped with the adapter sleeve between the middle joint, the adapter sleeve with be equipped with the diaphragm group between the middle joint, the middle joint include two ring flanges with connect in the intermediate tube between the ring flanges, the ring flange with the centre bore grafting cooperation of intermediate tube, just the terminal surface of intermediate tube with ring flange welded connection forms the weld pool, the depth direction of weld pool is on a parallel with the radial of intermediate joint, and the degree of depth is less than the thickness of intermediate tube, the adapter sleeve orientation the one end of ring flange is equipped with first grafting portion, the both ends of ring flange all be equipped with be used for with first grafting portion complex first grafting hole diameter, first grafting hole diameter is greater than the ring flange intermediate hole diameter, first joint with second shaft coupling orientation is equipped with the collar, the spacing collar is located to the periphery of adapter sleeve.

In one possible implementation manner, a second plug-in part is arranged at one end of the flange plate, which faces the middle pipe, the middle pipe is sleeved on the periphery of the second plug-in part, and a chamfer is arranged on the outer ring of the end part of the second plug-in part.

In one possible implementation, the flange plate faces one end of the middle pipe, and the end face of the middle pipe facing the flange plate is provided with welding steps, and the welding steps in pairs enclose the welding seam molten pool.

In one possible implementation, the weld puddle is V-shaped in cross section and the bottom surface is a cambered surface.

In one possible embodiment, the outer circumferential surface of the intermediate pipe adjacent to the weld pool is flush with the outer circumferential surface of the flange.

In one possible implementation manner, the coupling further comprises a second connecting piece connected between the diaphragm group and the flange plate, and a first connecting piece connected between the connecting sleeve and the diaphragm group, wherein the first connecting piece and the second connecting piece are respectively sleeved with a first gasket and a second gasket, and the first gasket and the second gasket are abutted to two ends of the diaphragm group.

In one possible implementation, a side surface of the first gasket and a side surface of the second gasket facing the diaphragm group are both cambered surfaces.

In one possible implementation manner, a counter bore and an avoidance hole are respectively arranged at an end face, facing away from the middle section, of the connecting sleeve, the avoidance hole penetrates through the connecting sleeve along the axial direction of the connecting sleeve, each counter bore corresponds to one first connecting piece, and each avoidance hole corresponds to one second connecting piece.

In one possible implementation manner, the flange plate is provided with a first through hole corresponding to the first connecting piece and a second through hole corresponding to the second connecting piece, the first connecting piece and the second connecting piece comprise a first bolt and a nut, the head of the first bolt in the first connecting piece is positioned in the counter bore, and the nut is in sliding fit with the first through hole; the first bolt head in the second connecting piece is abutted to one end of the flange plate, which is away from the connecting sleeve, and the nut is in sliding fit with the avoidance hole.

In one possible implementation manner, self-locking bolts are connected between the first coupling and the connecting sleeve and between the second coupling and the connecting sleeve;

And a second bolt is connected between the flange plate and the connecting sleeve, and the second bolt is radially positioned at the periphery of the diaphragm group at intervals.

Compared with the prior art, the embodiment of the application has the advantages that the middle pipe and the flange are connected in a splicing and welding mode (the middle pipe is prevented from being thrown away), the connecting sleeve and the flange are spliced (the two flanges are prevented from driving the middle pipe to be thrown away completely), the limiting rings are arranged at the ends of the first coupling and the second coupling (the connecting sleeve is prevented from being thrown away), the corresponding radial limiting structures are arranged between every two adjacent structures, the connecting strength is increased, the throwing away preventing capability is improved, and the safety of products is improved; the middle pipe and the flange plate are connected in a welding mode, so that the cost can be saved; compared with the traditional coupling which is directly connected with the diaphragm group, the connecting sleeve is adopted in the application, and the middle hole size of the first coupling and the second coupling can be larger, so that the connecting sleeve can be applied to equipment with larger shaft diameter, the appearance is more compact, and the equipment with different shaft diameters can be adapted by replacing the couplings with different sizes; during actual welding operation, the outer peripheral surface of the middle pipe is flush with the outer peripheral surface of the flange plate, the structure is convenient for processing welded welding seams, so that the welding seams are flush with the outer peripheral surface of the middle pipe, the structure is in a smooth state, and the attractiveness of the coupler is improved; the end face of the middle pipe is welded with the flange plate to form a welding seam molten pool, the depth direction of the welding seam molten pool is parallel to the radial direction of the middle joint, and the depth is smaller than the thickness of the middle pipe, so that the influence of axial thrust of the coupler on the welding seam during working is reduced.

Drawings

Fig. 1 is a schematic cross-sectional structure of a coupling with anti-fly function according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;

FIG. 3 is an enlarged schematic view of the portion B in FIG. 1;

Fig. 4 is a schematic structural diagram of another first connecting member according to an embodiment of the present utility model.

Reference numerals illustrate:

10-a first coupling;

20-middle section; 21-a flange plate; 211-a second plug-in part; 212-chamfering; 213-a first via; 214-a second via; 22-an intermediate tube; 23-welding the steps; 24-a first plug hole;

30-a second coupling;

40-connecting sleeve; 41-a first plug-in part; 42-counter bore; 43-avoidance holes;

50-a set of diaphragms;

60-limiting rings;

70-a first connector; 71-a second connector; 72-a first bolt; 73-a nut; 74-a self-locking bolt; 75-a second bolt; 76-limiting sleeve;

80-a first gasket; 81-second gasket.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Referring to fig. 1 to 4, a coupling with anti-fly function according to the present utility model will be described. The coupling with the anti-fly function comprises a first coupling 10, a middle joint 20 and a second coupling 30 which are sequentially connected along the axial direction of the coupling, wherein a connecting sleeve 40 is arranged between the first coupling 10 and the middle joint 20 and between the second coupling 30 and the middle joint 20, a diaphragm group 50 is arranged between the connecting sleeve 40 and the middle joint 20, the middle joint 20 comprises two flange plates 21 and a middle pipe 22 connected between the two flange plates 21, the flange plates 21 are in plug-in fit with middle holes of the middle pipe 22, the end face of the middle pipe 22 is in welding connection with the flange plates 21 to form a welding seam molten pool, the depth direction of the welding seam molten pool is parallel to the radial direction of the middle joint 20, the depth is smaller than the thickness of the middle pipe 22, a first plug-in portion 41 is arranged at one end of the connecting sleeve 40 facing the flange plates 21, first plug-in holes 24 used for being matched with the first plug-in portion 41 are arranged at two ends of the flange plates 21, a limiting ring 60 is arranged at one end of the first coupling 10 and the second coupling 30 facing the middle hole 22, and the limiting ring 60 is sleeved at the periphery of the connecting sleeve 40.

Optionally, the intermediate pipe 22 is a cold drawn pipe, the intermediate pipe 22 and the flange 21 need to be welded, the material of the intermediate pipe 22 can meet the length requirement of customized design, and the dimensional accuracy and mechanical performance can directly meet the design requirement without separate finishing and heat treatment.

It should be noted that, in this embodiment, since two connecting sleeves 40 and two connecting sleeves 21 are respectively provided, the sizes of the two connecting sleeves 40 may be the same or different, and the sizes of the two connecting sleeves 21 may be the same or different, and each connecting sleeve 40 is correspondingly connected with one connecting sleeve 21, when describing the connection relationship and displacement relationship between the connecting sleeve 40 and the flange 21, the connection relationship between the connecting sleeve 40 and the flange 21, and the connecting sleeve 40, that is, the connection relationship between the connecting sleeve 40 and the flange 21.

Compared with the prior art, the coupling with the anti-flying function is connected with the flange plate 21 in a splicing and bonding welding mode through the middle pipe 22 (the middle pipe 22 is prevented from flying), the connecting sleeve 40 is spliced with the flange plate 21 (the two flange plates 21 are prevented from driving the middle pipe 22 to fly entirely), the limiting rings 60 are arranged at the end parts of the first coupling 10 and the second coupling 30 (the connecting sleeve 40 is prevented from flying) so as to realize the corresponding radial limiting structure between every two adjacent structures, improve the anti-flying capability while increasing the connecting strength and improve the safety of products; the intermediate pipe 22 and the flange plate 21 are connected in a welding mode, so that the cost can be saved; compared with the traditional coupling which is directly connected with the diaphragm group 50, the connecting sleeve 40 is adopted in the utility model, and the middle hole sizes of the first coupling 10 and the second coupling 30 can be larger, so that the connecting sleeve can be applied to equipment with larger shaft diameters, the appearance is more compact, and the equipment with different shaft diameters can be adapted by replacing the couplings with different sizes; during actual welding operation, the outer peripheral surface of the middle pipe 22 adjacent to the weld pool is flush with the outer peripheral surface of the flange plate 21, the structure is convenient for processing the welded weld, so that the welded weld is flush with the outer peripheral surface of the middle pipe 22, and the smooth state is realized, and the attractiveness of the coupler is improved; the end face of the middle pipe 22 is welded with the flange plate 21 to form a welding seam molten pool, the depth direction of the welding seam molten pool is parallel to the radial direction of the middle joint 20, the depth is smaller than the thickness of the middle pipe 22, and the influence of axial thrust of the coupler on the welding seam during working is reduced.

In some embodiments, a specific connection manner between the flange 21 and the intermediate pipe 22 may be as shown in fig. 1 to 4. Referring to fig. 1 to 4, a second insertion part 211 is provided at one end of the flange 21 facing the intermediate pipe 22, the intermediate pipe 22 is sleeved on the outer periphery of the second insertion part 211, and a chamfer 212 is provided on the outer ring of the end of the second insertion part 211. The external diameter of second grafting portion 211 is less than the external diameter of ring flange 21, through setting up second grafting portion 211 and chamfer 212, makes things convenient for second grafting portion 211 and middle pipe 22 installation, and second grafting portion 211 plays certain positioning effect with middle pipe 22 grafting cooperation, can also reduce the welding degree of difficulty.

Specifically, the second plug portion 211 is in an interference fit with the intermediate tube 22. The operation state can be temporarily maintained by the interference between the second plug-in part 211 and the middle pipe 22 under the condition of unexpected failure of the welding seam, and the middle pipe 22 can be prevented from being thrown out when the welding seam is completely failed, so that the safety is further improved.

In some embodiments, a modified implementation of the flange 21 and the intermediate pipe 22 may be configured as shown in fig. 1 to 4. Referring to fig. 1 to 4, the end of the flange 21 facing the intermediate pipe 22 and the end face of the intermediate pipe 22 facing the flange 21 are each provided with a welding step 23, and the pair of welding steps 23 enclose to form a weld pool.

Alternatively, the cross section (view angle in the figure) of the weld pool is V-shaped, and the bottom surface is an arc surface. The shape of the weld pool can enable radial weld joints to be formed after welding is finished, and the influence of axial thrust of the coupler on the weld joints during working is reduced.

The V-shaped shape characteristic and the cambered surface of the bottom surface of the welding pool can enable the welding pool to be cleaned up more easily before welding, so that the welding quality is ensured, the welding seam can be ensured to have enough depth of the welding pool after the welding is finished, the welding between the intermediate pipe 22 and the flange plate 21 is firmer, the fusion performance is better, and the problems of eccentricity and end face perpendicularity of the intermediate pipe 22 can be corrected by adopting a thermal expansion and cold contraction process after the welding.

In some embodiments, a modified implementation of the coupling described above may employ the structure shown in fig. 1-4. Referring to fig. 1 to 4, the coupling further includes a second connecting member 71 connected between the diaphragm set 50 and the flange 21, and a first connecting member 70 connected between the connecting sleeve 40 and the diaphragm set 50, wherein the first connecting member 70 and the second connecting member 71 are respectively sleeved with a first gasket 80 and a second gasket 81, and the first gasket 80 and the second gasket 81 are abutted against two ends of the diaphragm set 50. Two-way limiting can be achieved at both ends of the diaphragm set 50 by providing a first spacer 80 and a second spacer 81.

The thickness of the first gasket 80 and the second gasket 81 are equal or unequal. For example, the second spacer 81 on the first connecting member 70 is located at an end of the diaphragm set 50 near the flange 21, the second spacer 81 on the second connecting member 71 is located at an end of the diaphragm set 50 away from the flange 21, and the thickness of the second spacer 81 is greater than the thickness of the first spacer 80.

The first connecting member 70 sequentially passes through the connecting sleeve 40, the first gasket 80, the diaphragm set 50 and the second gasket 81, and the second connecting member 71 sequentially passes through the flange 21, the first gasket 80, the diaphragm set 50 and the second gasket 81.

Specifically, the first pad 80 and the second pad 81 are each cambered surfaces toward one side of the diaphragm group 50. This structure satisfies the large flexibility characteristic of the diaphragm set 50.

In some embodiments, a modified embodiment of the connecting sleeve 40 may be configured as shown in fig. 1 to 4. Referring to fig. 1 to 4, a counter bore 42 and a relief hole 43 are respectively provided at an end surface of the connecting sleeve 40 facing away from the intermediate joint 20, the relief hole 43 penetrates the connecting sleeve 40 along an axial direction of the connecting sleeve 40, each counter bore 42 corresponds to a first connecting member 70, and each relief hole 43 corresponds to a second connecting member 71. By providing the counter bore 42 and the relief hole 43, the structure is more compact, and in practical implementation, the midpoints of the first connecting member 70 and the second connecting member 71 (where the midpoints are the projection points of the central axes of the first connecting member 70 or the second connecting member 71 on the connecting sleeve 40) are located on the same circle, so that the coupling has a smaller radial dimension.

In some embodiments, one embodiment of the first connector 70 and the second connector 71 may have the structure shown in fig. 1 to 4. Referring to fig. 1 to 4, the flange 21 is provided with a first through hole 213 corresponding to the first connecting member 70 and a second through hole 214 corresponding to the second connecting member 71, each of the first connecting member 70 and the second connecting member 71 includes a first bolt 72 and a nut 73, the head of the first bolt 72 in the first connecting member 70 is located in the counter bore 42, and the nut 73 is slidably engaged with the first through hole 213; the head of a first bolt 72 in the second connecting piece 71 is abutted against one end of the flange 21, which is away from the connecting sleeve 40, and a nut 73 is in sliding fit with the avoidance hole 43.

For convenience of description, define: a first bolt 72a, a nut 73a, a first washer 80a, a second washer 81a on the first connector 70; a first bolt 72b, a nut 73b, a first washer 80b, and a second washer 81b on the second connection member 71.

Referring to fig. 2, the first bolt 72a extends from the counter bore 42, the head portion abuts against the bottom surface of the hole of the counter bore 42, the first bolt 72a penetrates through the first gasket 80a, the diaphragm set 50 and the second gasket 81a in sequence, and finally penetrates out of the first through hole 213, the nut 73a is screwed on the first bolt 72a and is located in the first through hole 213, the inner diameter of the first through hole 213 is larger than the outer diameters of the second gasket 81a and the nut 73a, and during sliding along with the first connector 70, the second gasket 81a may be partially located in the first through hole 213.

Referring to fig. 3, the first bolt 72b extends into the second through hole 214, penetrates through the first gasket 80b, the diaphragm set 50 and the second gasket 81b in sequence, and finally extends into the avoidance hole 43, the nut 73b is screwed on the first bolt 72b and is located in the avoidance hole 43, the inner diameters of the avoidance hole 43 are larger than the outer diameters of the second gasket 81b and the nut 73b, and the second gasket 81b may be partially located in the avoidance hole 43 during sliding along with the second connecting piece 71.

In specific implementation, referring to fig. 4, the first connecting piece 70 is further provided with a T-shaped stop collar 76, the T-shaped stop collar 76 has a stop step, the first through hole 213 is located between the second spacer 81a and the stop step, a preset interval is formed between the second spacer 81a and the stop step and the first through hole 213, and the peripheral dimension is larger than the dimension of the first through hole 213.

In some embodiments, an improved assembly of the coupling may be constructed as shown in FIG. 1. Referring to fig. 1, self-locking bolts 74 are connected between the first coupling 10 and the connecting sleeve 40, and between the second coupling 30 and the connecting sleeve 40.

A second bolt 75 is connected between the flange 21 and the connecting sleeve 40, and the second bolt 75 is located at the periphery of the diaphragm set 50 at intervals in the radial direction.

The corresponding connecting sleeve 40 is provided with a self-locking screw hole corresponding to the self-locking bolt 74, and the self-locking bolt 74 is adopted, so that compared with the common bolt in the prior art, the self-locking bolt 74 can realize effective anti-loosening without coating anti-loosening glue or adding an anti-loosening washer.

The second bolts 75 are spaced radially from the outer periphery of the diaphragm group 50 in order to avoid interference, since the second bolts 75 need to pass through the region where the diaphragm group 50 is located in the axial direction.

In some embodiments, one embodiment of the above-described diaphragm set 50 may take the configuration shown in fig. 1-4. Referring to fig. 1 to 4, the diaphragm group 50 includes diaphragms disposed in a multi-layered stack. For example, the number of the diaphragms is 6, and different diaphragms can be bent to different directions in actual use by arranging a plurality of diaphragms, so that the eccentric compensation capability is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a shaft coupling with prevent function flies, its characterized in that, including first shaft coupling, middle joint and the second shaft coupling of connecting in order along self axial, first shaft coupling with between the middle joint, the second shaft coupling with all be equipped with the adapter sleeve between the middle joint, the adapter sleeve with be equipped with the diaphragm group between the middle joint, the middle joint includes two ring flanges and connects in two the intermediate tube between the ring flanges, the ring flange with the centre bore grafting cooperation of intermediate tube, just the terminal surface of intermediate tube with ring flange welded connection forms the welding seam molten pool, the degree of depth direction of welding seam molten pool is on a parallel with the radial of intermediate joint, and the degree of depth is less than the thickness of intermediate tube, the adapter sleeve orientation the one end of ring flange is equipped with first grafting portion, the both ends of ring flange all be equipped with be used for with first grafting portion complex first grafting hole diameter of ring flange, first shaft coupling with second shaft coupling orientation the adapter sleeve of ring is equipped with spacing collar periphery is located to the adapter sleeve.

2. The coupling with the anti-fly function according to claim 1, wherein a second plug-in portion is arranged at one end of the flange plate, which faces the intermediate pipe, the intermediate pipe is sleeved on the periphery of the second plug-in portion, and a chamfer is arranged on the outer ring of the end portion of the second plug-in portion.

3. The coupling with the anti-fly function according to claim 1, wherein one end of the flange plate facing the middle pipe and the end face of the middle pipe facing the flange plate are provided with welding steps, and the welding steps in pairs enclose the welding seam melting pool.

4. A coupling with anti-fly function as claimed in claim 3 wherein the weld pool is V-shaped in cross section and the bottom surface is a cambered surface.

5. A coupling with anti-fly function as set forth in claim 3 wherein said intermediate tube outer peripheral surface adjacent said weld pool is flush with said flange outer peripheral surface.

6. The coupling with anti-fly function according to claim 1, further comprising a second connecting piece connected between the diaphragm group and the flange plate, and a first connecting piece connected between the connecting sleeve and the diaphragm group, wherein the first connecting piece and the second connecting piece are respectively sleeved with a first gasket and a second gasket, and the first gasket and the second gasket are abutted to two ends of the diaphragm group.

7. The coupling with anti-fly function of claim 6, wherein a side of the first gasket and the second gasket facing the diaphragm assembly are cambered surfaces.

8. The coupling with the anti-fly function according to claim 6, wherein a counter bore and an avoidance hole are respectively arranged at an end face of the connecting sleeve, which faces away from the middle joint, the avoidance hole penetrates through the connecting sleeve along the axial direction of the connecting sleeve, each counter bore corresponds to one first connecting piece, and each avoidance hole corresponds to one second connecting piece.

9. The coupling with the anti-fly function according to claim 8, wherein a first through hole corresponding to the first connecting piece and a second through hole corresponding to the second connecting piece are arranged on the flange plate, the first connecting piece and the second connecting piece comprise a first bolt and a nut, the head of the first bolt in the first connecting piece is positioned in the counter bore, and the nut is in sliding fit with the first through hole; the first bolt head in the second connecting piece is abutted to one end of the flange plate, which is away from the connecting sleeve, and the nut is in sliding fit with the avoidance hole.

10. The coupling with the anti-fly function according to claim 1, wherein self-locking bolts are connected between the first coupling and the connecting sleeve and between the second coupling and the connecting sleeve;

And a second bolt is connected between the flange plate and the connecting sleeve, and the second bolt is radially positioned at the periphery of the diaphragm group at intervals.