CN216789044U

CN216789044U - Shaft coupling

Info

Publication number: CN216789044U
Application number: CN202220338845.1U
Authority: CN
Inventors: 何智力; 吴雷; 殷雷; 陈俊阳; 彭闯
Original assignee: Chinalco Swa Plates & Strips Co ltd
Current assignee: Chinalco Swa Plates & Strips Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-06-21
Anticipated expiration: 2032-02-18

Abstract

The utility model relates to the technical field of connecting parts, and particularly discloses a coupler which comprises two connecting sleeves with connecting holes, wherein a plurality of bulges are arranged on the matched end surfaces of the two connecting sleeves, a recess for accommodating the bulge on the other connecting sleeve is formed between the adjacent bulges on the same connecting sleeve, at least one bulge on each connecting sleeve is provided with a guide surface, and the guide surfaces on the two connecting sleeves can be abutted. This scheme is used for reducing the degree of difficulty of shaft coupling installation among the prior art, improves the efficiency of shaft coupling installation, can also reduce the bolt in addition because of bearing the too big easy cracked problem of moment of torsion.

Description

Shaft coupling

Technical Field

The utility model relates to the technical field of connecting parts, in particular to a coupler.

Background

In the prior art, a coupler is widely applied to connection of shafts of two different machines (the shafts of the two machines are hereinafter referred to as connecting shafts), the coupler comprises two connecting sleeves which are detachably connected, when the connection of the two connecting shafts is realized, one connecting sleeve is connected with one connecting shaft, the other connecting sleeve is connected with the other connecting shaft, and then the two connecting sleeves are connected, namely the connection of the two connecting shafts is realized, and the synchronous action of the two connecting shafts and the coupler is ensured.

When a connecting shaft is frequently required to be replaced, connecting sleeves of a coupler are also frequently required to be disassembled and assembled, but most of the connecting sleeves are connected through hinged hole bolts, and torque between the two connecting sleeves is also transmitted through the bolts, so that when the connecting shaft is replaced, all the hinged hole bolts are required to be disassembled and assembled for disassembling and assembling the coupler, and for some couplers with larger sizes, the quantity of the bolts is large, and the hinged hole bolts and the connecting holes on the connecting sleeves are in close fit (transition fit), so that the disassembling and assembling process is time-consuming and labor-consuming; in addition, in the case of a coupling that needs to transmit a large torque, there is a case where the bolts are easily broken only by transmitting the torque by the bolts.

For example, the tension roller is used in a production line for producing aluminum strips or other slitting machine line production lines, and due to the fact that the strips with different thicknesses and widths are produced, rubber rollers on the surface of the tension roller are often damaged, surface quality defects of finished strips can be generated, and a coupler needs to be frequently detached to replace the tension roller. In addition, before the two connecting sleeves are assembled, because the end surfaces of the connecting sleeves are planes and the matching between the hinged hole bolts and the connecting holes is in transition fit, the connecting holes of the matching end surfaces of the two connecting sleeves need to be accurately aligned in a visual inspection mode, even if small position deviation occurs, the bolts can still be installed on the connecting holes, but the difficulty of installing the hinged hole bolts and the assembly efficiency are reduced due to the position deviation, on the other hand, in the actual use process of the coupler, because the connection between the two connecting sleeves is realized only by the bolts, the bolts play a role of transmitting torque except the connection effect, and when the torque to be transmitted is overlarge, the bolts are easily broken.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a coupler, which aims to reduce the difficulty of mounting the coupler in the prior art, improve the efficiency of mounting the coupler and reduce the problem that a bolt is easy to break due to overlarge bearing torque.

In order to achieve the above object, the basic scheme of the present invention is as follows:

the utility model provides a coupler, includes two adapter sleeves that have the connecting hole, all is equipped with a plurality of archs on two adapter sleeve matched with terminal surfaces, forms between the adjacent arch on same adapter sleeve to be used for holding the bellied sunken on another adapter sleeve, and at least one arch is equipped with the spigot surface on every adapter sleeve, and the spigot surface on two adapter sleeves can offset.

Compare the beneficial effect in prior art:

when this scheme of adoption carries out the installation of shaft coupling, be connected the back with the connecting axle respectively at two adapter sleeves, the fitting surface of two adapter sleeves is when the butt joint, lead through the spigot surface in the arch, and then make the arch on two adapter sleeves to carry out unsmooth cooperation fast (the arch on one adapter sleeve forms unsmooth cooperation with the sunken on another adapter sleeve), and realize the accurate butt joint of two adapter sleeves fast through unsmooth complex mode, need not look over the mode that the connecting hole position was aimed at through artifical naked eye among the prior art and aim at, and then also reduced because of there is the problem that the assembly efficiency is low that positional deviation brought when aiming at two adapter sleeves.

In addition, in this scheme, because of protruding and sunken existence on the adapter sleeve, when two adapter sleeves are connected, the arch on one adapter sleeve inserts in the sunken of another adapter sleeve for the arch of two adapter sleeves can offset in order to realize the transmission of moment of torsion, has solved among the prior art and has only relied on the bolt to realize that the bolt that the moment of torsion transmission exists is because of the too big cracked problem of moment of torsion easily.

Furthermore, every all be equipped with the spigot surface on the arch, the spigot surface is the inclined plane, and a plurality of spigot surfaces along adapter sleeve circumference equipartition on same adapter sleeve.

Has the beneficial effects that: all be equipped with the spigot surface on every arch, and the spigot surface on the adapter sleeve along adapter sleeve circumference equipartition, further reduced the degree of difficulty of two adapter sleeves butt joints, be favorable to improving the efficiency that the adapter sleeve is accurate to dock.

In addition, each bulge in the scheme is provided with an inclined guide surface, and the inclined guide surfaces of the two connecting sleeves are abutted, so that the torque transmission of the connecting sleeves can be completely transmitted by virtue of the bulges, and the problem that a hinged hole bolt is easy to break due to the fact that the hinged hole bolt bears large torque in the prior art is solved; in addition, the bulges can bear all torque, so that a common bolt can be adopted when the two connecting sleeves are installed, and the common bolt and the connecting holes are in clearance fit, thereby greatly reducing the assembling difficulty of the two connecting sleeves.

In addition, after the guide surface is worn due to bearing of a large torque, a gap caused by the wear of the guide surface can be eliminated by further approaching the two connecting sleeves along the inclined guide surface, so that the connecting sleeves can still stably and reliably realize transmission; and because the mutual approaching of two adapter sleeves is axial removal only, so do not influence the alignment of connecting hole, the installation that also makes ordinary bolt is not influenced, and then has reached the problem of compromise transmission stability and dismouting efficiency, and consequently also prolonged the life of shaft coupling simultaneously.

Furthermore, on one adapter sleeve sunken can carry out unsmooth cooperation with the arch on another adapter sleeve, there is the clearance protruding terminal surface and sunken terminal surface.

Has the advantages that: when two adapter sleeves were installed, make two adapter sleeves realize unsmooth cooperation through bellied dislocation mounting means, and utilize the transmission of protruding and sunken unsmooth cooperation realization moment of torsion on two adapter sleeves, and in the torque transmission in-process, the protruding terminal surface of two adapter sleeves and sunken terminal surface are because of there being the clearance contactless, make wearing and tearing between two adapter sleeves only take place on the spigot surface, and after the spigot surface wearing and tearing, only need mill bellied terminal surface thin, in order to make things convenient for two adapter sleeves to be close to each other and realize the counterbalance of spigot surface once more (the adapter sleeve is close to each other and can compensate the clearance that brings because of wearing and tearing, further be favorable to prolonging the life of shaft coupling.

In addition, protruding terminal surface and sunken terminal surface have the clearance, also make when two adapter sleeves connect, can form the pretightning force to the reliability and the compact type that the two is connected are compared to and carry out the mode of pretension through addding the elastic component between two adapter sleeves among the prior art, and this scheme has reduced spare part, has also reached the same effect on the basis of reducing part cost and installation technology cost.

Furthermore, each protrusion is provided with two symmetrical guide surfaces.

Has the advantages that: through the setting of two symmetrical spigot surfaces for two bellied spigot surfaces on the connecting sleeve offset with two adjacent bellied relative spigot surfaces on another connecting sleeve respectively, and the mode that offsets is the same completely, and then make the shaft coupling rotate clockwise or anticlockwise, and the transmission of moment of torsion is the same in its arch, and then is favorable to the life of the shaft coupling that the extension needs just reversal.

Furthermore, there is the interval between the hole of arch and adapter sleeve, is equipped with the cooperation tooth that is used for being connected with the connecting axle on the hole of adapter sleeve.

Has the advantages that: the distance is reserved between the bulge and the inner hole of the connecting sleeve, so that on one hand, a space of a tool withdrawal groove is reserved for machining the matching teeth on the connecting sleeve, the machining of the matching teeth is facilitated, and the machining difficulty of the matching teeth is reduced, and on the other hand, the bulge position is far away from the central axis position of the connecting shaft, which is equivalent to that in the torque transmission process, the force arm is prolonged, so that the torque transmission process is more labor-saving, and the service life of the connecting sleeve is prolonged; in addition, compare in the arch of running through adapter sleeve hole and periphery, the protruding material of this scheme still less, is favorable to reducing material cost and reduces bellied processing cost.

Furthermore, one end of each connecting sleeve is provided with a first flange, the other end of each connecting sleeve is provided with a second flange, the protrusions are arranged on the first flanges, the second flanges are detachably connected with sealing rings, and the sealing rings can abut against the surfaces of the connecting shafts.

Has the advantages that: through the arrangement of the second flange and the sealing rings, after the connecting shaft and the connecting sleeves are installed, one section of the two connecting shafts inside the coupler can be isolated from the outside through the sealing rings on the two connecting sleeves, and then outside dust, impurities and the like can not enter the coupler, so that the reliability of connection between the coupler and the connecting shafts is not influenced by the outside.

In addition, the setting of sealing washer also makes the lubricating oil that scribbles on connecting axle or the adapter sleeve can not be thrown away along with the rotation of connecting axle, adapter sleeve, is favorable to guaranteeing lubricated effect and avoids lubricating oil to run off.

Further, the outer diameter of the second flange is smaller than that of the first flange.

Has the advantages that: the flange II is set to be smaller in size, so that a larger operation space is provided for the fixed connection of the flange I of the two connecting sleeves, and the two connecting sleeves are convenient to disassemble and assemble.

Furthermore, the flange II is detachably connected with a baffle ring, the baffle ring is connected with a pressure plate, the sealing ring is positioned between the baffle ring and the pressure plate, and the inner diameter of the baffle ring is smaller than the minimum inner diameter of the connecting sleeve.

Has the advantages that: through the setting of fender ring and clamp plate, both make the installation of sealing washer become simple, make the sealing washer be equivalent to having higher intensity and hardness because of tightly being pressed from both sides, reduce the probability that the sealing washer warp, and then guarantee that the sealing washer offsets with the connecting axle surface all the time in order to ensure sealed effect.

In addition, because the internal diameter that keeps off the ring is less than the minimum internal diameter of adapter sleeve for two keep off the ring on the shaft coupling and sealed in the both ends of shaft coupling in other words, and make the sealing washer expose the size that keeps off the ring littleer, the probability that the sealing washer warp is lower, and then is favorable to improving and keeps off ring and sealing washer complex whole sealed effect, in addition, still is favorable to prolonging the life of sealing washer.

Furthermore, a plurality of clearance gaps are formed in the second flange, the baffle ring and the pressing plate, the clearance gaps and the connecting holes form one-to-one correspondence, and mounting holes are formed among the adjacent clearance gaps of the second flange, the baffle ring and the pressing plate.

Has the advantages that: through the setting of mounting hole, adopt the bolt to run through the mounting hole of flange two, fender ring sum clamp plate in proper order, realize the connection of three, and through keeping away the setting of empty breach, guaranteed to make the external diameter of flange two can be bigger relatively under the prerequisite that does not influence two simple installations of flange one, and then the setting of easy to assemble hole to make things convenient for the dismantled connection of flange two, fender ring sum clamp plate, further be favorable to improving the installation effectiveness of shaft coupling.

In addition, the setting of keeping away empty breach can also make things convenient for the accurate positioning of fender ring, clamp plate and flange two, further reduces the installation degree of difficulty of shaft coupling, improves the efficiency of installation.

Furthermore, the baffle ring, the sealing ring and the pressing plate are all of two-piece type structures.

Has the advantages that: through setting clamp plate, sealing washer and fender ring to two formula structures for during the shaft coupling installation, can earlier realize being connected (like the connected mode of tooth profile engagement, perhaps key-type connection mode again) the back with adapter sleeve and connecting axle, will keep off the ring installation again, and keep off the ring and cooperate with flange two because of needs, flange two is monolithic structure, so all have a fixed benchmark in the installation of fender ring, clamp plate in other words, be favorable to guaranteeing to keep off the ring, the positional stability of the relative connecting axle of clamp plate and sealing washer.

Drawings

FIG. 1 is an isometric view of an embodiment of the utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

fig. 4 is a front sectional view of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the connecting sleeve comprises a connecting sleeve 1, a first flange 11, a second flange 12, a connecting hole 13, a protrusion 2, a guide surface 21, a sealing ring 3, a baffle ring 4, a containing groove 41, a pressing plate 5, a clearance gap 6 and a mounting hole 7.

Examples

The embodiment is basically as shown in the attached drawings 1 to 4, and the self-aligning hole coupling comprises two symmetrical connecting sleeves 1, wherein a matching tooth (the matching tooth can be in a spline form or an inner gear ring form, and the embodiment adopts an inner gear ring form, wherein the connecting shaft is provided with a tooth meshed with the matching tooth) connected with the connecting shaft is formed in an inner hole of each connecting sleeve 1, a flange I11 and a flange II 12 are integrally formed at two ends of each connecting sleeve 1, a plurality of protrusions 2 uniformly distributed along the circumferential direction of the connecting sleeve 1 are formed on the flange I11, symmetrical inclined guide surfaces 21 are formed on each protrusion 2, the guide surfaces 21 on the two connecting sleeves 1 can be abutted, a recess for accommodating the protrusion 2 on the other connecting sleeve 1 is formed between the adjacent protrusions 2 on the same connecting sleeve 1, and a space exists between the protrusion 2 and the inner hole of the connecting sleeve 1; a plurality of connecting holes 13 are formed in the first flange 11, and the connecting holes 13 are uniformly distributed along the circumferential direction of the connecting sleeve 1.

A gap exists between the bulge 2 on the left connecting sleeve 1 and the end surface of the matching depression of the right connecting sleeve 1.

Can dismantle on the second 12 flange and be connected with fender ring 4, keep off and connect clamp plate 5 on the ring 4, keep off and be equipped with sealing washer 3 between ring 4 and the clamp plate 5, specifically, it has the holding tank 41 that is used for holding sealing washer 3 to open on the terminal surface that keeps off ring 4 and clamp plate 5 paste mutually, sealing washer 3 adopts the felt, keep off ring 4, sealing washer 3 and clamp plate 5 all adopt the two-piece structure of symmetry, keep off ring 4, the whole that sealing washer 3 and clamp plate 5 formed is equivalent to the end cover of adapter sleeve 1, this end cover comprises two identical half limits.

The inner diameter of the sealing ring 3 is smaller than that of the baffle ring 4, and the inner diameter of the baffle ring 4 is smaller than that of the connecting sleeve 1.

The outer diameter of the second flange 12 is smaller than that of the first flange 11, a plurality of clearance gaps 6 are formed in the second flange 12, the baffle ring 4, the sealing ring 3 and the pressing plate 5, and the clearance gaps 6 and the connecting holes 13 form one-to-one correspondence. Mounting holes 7 are formed among adjacent clearance gaps 6 of the second flange 12, the baffle ring 4 and the pressing plate 5, so that the baffle ring 4, the pressing plate 5 and the second flange 12 are fixedly connected through the mounting holes 7.

The specific implementation process is as follows:

when two connecting shafts need to be connected, firstly, the connecting sleeve 1 is connected with the connecting shafts through meshing of matching teeth; secondly, matching the bulge 2 of one connecting sleeve 1 with the depression of the other connecting sleeve 1, completing the butt joint of the two connecting sleeves 1 by utilizing the sliding of the connecting sleeves 1 along the guide surface 21, and then utilizing a common bolt to penetrate through the connecting hole 13 and locking a nut on the common bolt to realize the fixed connection of the two connecting sleeves 1; thirdly, placing the sealing ring 3 in the accommodating groove 41 of the baffle ring 4, pressing the pressing plate 5 on the sealing ring 3, aligning the mounting holes 7 of the baffle ring 4 and the pressing plate 5 with the clearance gap 6, and then penetrating bolts into the mounting holes 7 of the baffle ring 4, the pressing plate 5 and the sealing ring 3, wherein the baffle ring 4, the sealing ring 3 and the pressing plate 5 are all of symmetrical two-piece structures, and the two-piece structures are not connected, so that the whole formed by the baffle ring 4, the sealing ring 3 and the pressing plate 5 is provided with two independent parts, during assembly, firstly aligning one independent part with the mounting hole 7 on the second flange 12 to realize fixed connection of the bolts, and then realizing bolt connection of the other independent part with the second flange 12 in the same way; and fourthly, the mode of installing the retaining ring 4 and the pressure plate 5 on the remaining flange II 12 of the coupler is completely the same as that of the third step, and the installation of the whole coupler is completed after the retaining ring 4, the pressure plate 5 and the flange II 12 are installed.

In the installation process of the two connecting sleeves 1 in the embodiment, the positions of the connecting holes 13 do not need to be checked by naked eyes manually to be aligned accurately, the two connecting sleeves 1 are automatically and accurately butted under the guidance of the bulges 2 with the guide surfaces 21, and the butting efficiency is high; and in the fixed connection process of the connecting sleeve 1, the bolt is in clearance fit with the connecting hole 13, so that the installation mode of the bolt is simple and quick, and compared with the installation of a hinged hole bolt, the installation difficulty is greatly reduced, and the assembly efficiency is improved.

The end cover formed by the baffle ring 4, the sealing ring 3 and the pressing plate 5 is very simple in installation mode, the end cover is installed on the second flange 12, and the operation space of the end cover and the second flange 12 in fixed installation is larger than that of the existing flange-free case, so that the end cover is simple and convenient to install, and the assembly difficulty of the coupler is further reduced; in addition, after the end cover is installed, the sealing and protection of the connecting shaft in the coupler are formed, so that the lubricating oil in the coupler can be prevented from leaking, external dust and sundries can be prevented from entering the coupler, the service life of the whole coupler is prolonged, and the transmission effect of the coupler and the connecting shaft is improved.

In the transmission process of the connecting sleeve 1, because the inclined symmetrical guide surfaces 21 are arranged on each protrusion 2 in the embodiment, and the inclined guide surfaces 21 of the two connecting sleeves 1 are abutted, the torque transmission of the connecting sleeve 1 can be completely transmitted by the protrusions 2, and the problem that the hinged hole bolt is easy to break due to the fact that the hinged hole bolt bears large torque in the prior art is solved.

In addition, after the guide surface 21 is abraded due to the bearing of a large torque, the end surfaces of the thin protrusions 2 are milled to enable the two connecting sleeves 1 to approach each other along the inclined guide surface 21 so as to eliminate a gap caused by abrasion of the guide surface 21, and therefore the connecting sleeves 1 can still stably and reliably realize transmission; and because the mutual approaching of two adapter sleeves 1 is only axial removal, so do not influence the alignment of connecting hole 13, just also make the installation of ordinary bolt not influenced, and then reached and compromise transmission stability and dismouting efficiency's problem.

In addition, after the guide surface 21 is abraded, the coupler can still normally work in the mode, and therefore the service life of the coupler is prolonged.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several variations and modifications can be made, which should also be considered as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a shaft coupling, includes two adapter sleeves that have the connecting hole, its characterized in that: a plurality of bulges are arranged on the end faces of the two connecting sleeves matched with each other, a concave part for accommodating the bulge on the other connecting sleeve is formed between the adjacent bulges on the same connecting sleeve, at least one bulge on each connecting sleeve is provided with a guide surface, and the guide surfaces on the two connecting sleeves can be abutted.

2. The coupling of claim 1, wherein: every all be equipped with the spigot surface on the arch, the spigot surface is the inclined plane, and a plurality of spigot surfaces along adapter sleeve circumference equipartition on same adapter sleeve.

3. The coupling of claim 2, wherein: the concave part on one connecting sleeve can be matched with the convex part on the other connecting sleeve in a concave-convex mode, and a gap exists between the end face of the convex part and the end face of the concave part.

4. The coupling of claim 3, wherein: each protrusion is provided with two symmetrical guide surfaces.

5. The coupling of claim 1, wherein: a space exists between the protrusion and an inner hole of the connecting sleeve, and the inner hole of the connecting sleeve is provided with matching teeth used for being connected with the connecting shaft.

6. The coupling of claim 1, wherein: one end of each connecting sleeve is provided with a first flange, the other end of each connecting sleeve is provided with a second flange, the protrusions are arranged on the first flanges, the second flanges are detachably connected with sealing rings, and the sealing rings can abut against the surfaces of the connecting shafts.

7. The coupling of claim 6, wherein: the outer diameter of the second flange is smaller than that of the first flange.

8. The coupling of claim 6, wherein: the flange II is detachably connected with a baffle ring, the baffle ring is connected with a pressing plate, the sealing ring is positioned between the baffle ring and the pressing plate, and the inner diameter of the baffle ring is smaller than the minimum inner diameter of the connecting sleeve.

9. The coupling of claim 7, wherein: and a plurality of clearance gaps are formed in the second flange, the baffle ring and the pressing plate, the clearance gaps and the connecting holes form a one-to-one correspondence relationship, and mounting holes are formed among the adjacent clearance gaps of the second flange, the baffle ring and the pressing plate.

10. The coupling of claim 9, wherein: the baffle ring, the sealing ring and the pressing plate are all of two-piece type structures.