CN209762043U - Universal joint coupler - Google Patents

Abstract

The application relates to the technical field of couplings and discloses a universal joint coupling, including first connecting portion and the second connecting portion that are used for connecting driving shaft and driven shaft respectively, still including fixed block and two settings connection pin on the fixed block, the fixed block is located first connecting portion with between the second connecting portion, two the connection pin respectively with first connecting portion with the second connecting portion are connected, and two connection pin mutually independent sets up. The two connecting pins are not in contact with each other, friction cannot be generated between the two connecting pins during transmission, and therefore abrasion cannot occur, holes do not need to be punched on the connecting pins, the two connecting pins are abraded and easily broken, the coupler cannot work, the connecting pins need to be replaced, and materials are wasted. So set up, solved current shaft coupling and used for a long time and caused little pin and big fixed pin to damage cracked problem easily.

Description

Universal joint coupler

Technical Field

The present application relates to the field of coupling technology, and more particularly, to a universal joint coupling.

Background

The coupling is a mechanical part used for coupling two shafts (a driving shaft and a driven shaft) in different mechanisms to enable the shafts to rotate together so as to transmit torque. In the high-speed heavy-load power transmission, some couplings also have the functions of buffering and damping and improving the dynamic performance of a shaft system. The coupling consists of two halves which are respectively connected with the driving shaft and the driven shaft. Generally, a power machine is connected with a working machine by means of a coupling.

The connecting part of the existing coupler consists of a large fixing pin, two short sleeves and a small pin, the middle of the large fixing pin is perforated, the small pin penetrates through a hole on the large fixing pin and then fixes the large fixing pin and the small pin through the two sleeves, on one hand, in order to enable the small pin to penetrate through the hole of the large fixing pin, a slender small pin needs to be used, but the small pin is thin and is easy to break under the influence of friction after being used for a long time, so that the coupler cannot work, and the small pin needs to be replaced, thereby wasting materials; on the other hand, the hole wall of the large fixing pin is thin, friction is generated between the small pin and the hole wall when the coupler is used for a long time, the hole wall is easy to wear and break, and therefore the small pin cannot be fixed in the hole, the coupler cannot be used any more, the large fixing pin needs to be replaced, and materials are wasted.

Therefore, how to solve the problem that the existing coupling is easy to damage and break the small pin and the large fixing pin after being used for a long time becomes an important technical problem to be solved by the person in the field.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art at least to some extent, an object of the present application is to provide a universal joint coupling that can solve the problem that the breakage of small pins and large fixing pins is easily caused by the long-term use of the existing coupling.

The utility model provides a universal joint coupling, including first connecting portion and the second connecting portion that is used for connecting driving shaft and driven shaft respectively, still including fixed block and two settings the connecting pin on the fixed block, the fixed block is located first connecting portion with between the second connecting portion, two the connecting pin respectively with first connecting portion with the second connecting portion are connected, and two the connecting pin mutually independent sets up.

Preferably, the fixed block is provided with two through holes for the two connecting pins to extend into, and the two connecting pins penetrate through the two through holes and are connected with the first connecting portion and the second connecting portion respectively.

Preferably, the axes of the two through holes are perpendicular.

Preferably, the first connecting portion and the second connecting portion are provided with fixing holes into which the end portions of the connecting pins extend.

Preferably, the two connecting pins are riveted to the first connecting portion and the second connecting portion, respectively.

Preferably, the outer wall of one end of the connecting pin is provided with knurls, and the knurls are tightly matched with the fixing holes.

Preferably, the first connecting portion and the second connecting portion are close to one end of the fixing block and are provided with two opposite connecting lugs, and the fixing hole is located on the connecting lugs.

Preferably, a groove for the fixing block to extend into is formed between the two connecting lugs of the first connecting part and the second connecting part.

Preferably, the fixing block is of a rectangular parallelepiped structure.

Preferably, the first connecting part and the second connecting part are made of 45 steel or 40Cr high-quality alloy steel.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

The application provides a universal joint coupler, be connected driving shaft and driven shaft with first connecting portion and second connecting portion respectively when using, first connecting portion and second connecting portion are connected through two connecting pins, two connecting pins all set up on the fixed block, be connected first connecting portion and second connecting portion through the fixed block, and two connecting pins mutually independent set up, two connecting pins contactless each other promptly, can not produce the friction between two connecting pins when the transmission, thereby can not take place wearing and tearing, need not to perforate on the connecting pin like this, make two connecting pins take place wearing and tearing and break easily, thereby make the unable work of shaft coupling, and need change the connecting pin, thereby extravagant material. So set up, solved current shaft coupling and used for a long time and caused little pin and big fixed pin to damage cracked problem easily.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

FIG. 1 is a block diagram of a universal joint coupling shown in accordance with an exemplary embodiment;

FIG. 2 is a riveted section of a connecting portion and a connecting pin of a universal joint coupling according to an exemplary embodiment;

FIG. 3 is a coupling view of a coupling portion and a coupling pin of a universal joint coupling according to another exemplary embodiment;

FIG. 4 is an enlarged view of the connecting pin of FIG. 3;

FIG. 5 is a block diagram illustrating a fixed block of a universal joint coupling according to an exemplary embodiment;

Fig. 6 is an enlarged view of a portion a in fig. 2.

In the figure:

1-first connecting part, 2-second connecting part, 3-fixing block, 4-connecting pin, 5-through hole and 6-sleeve.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

referring to fig. 1 to 6, the present embodiment provides a universal joint coupler, including a first connecting portion 1 and a second connecting portion 2, the first connecting portion 1 and the second connecting portion 2 are respectively used for connecting a driving shaft and a driven shaft, the universal joint coupler further includes two connecting pins 4 and a fixing block 3, the fixing block 3 is located between the first connecting portion 1 and the second connecting portion 2, so as to be used for connecting the first connecting portion 1 and the second connecting portion 2, the two connecting pins 4 are all disposed on the fixing block 3, and the two connecting pins 4 are disposed independently of each other (i.e., the two connecting pins 4 are not in contact with each other), after the two connecting pins 4 are respectively connected with the first connecting portion 1 and the second connecting portion 2, no friction is generated between the two connecting pins during transmission, so that no wear occurs.

In this embodiment, as shown in fig. 5, two through holes 5 are provided on the fixing block 3, the two connecting pins 4 respectively penetrate through the two through holes 5 and are connected with the first connecting portion 1 and the second connecting portion 2, and the two through holes 5 are also provided independently, so that the two connecting pins 4 can be independent from each other, and thus, no friction and no abrasion are generated.

In other embodiments, the two connecting pins 4 may be fixed to the fixing block 3, and the two connecting pins 4 may be integrated with the fixing block 3 to enhance the connection stability between the connecting pins 4 and the fixing block 3.

preferably, as shown in fig. 1 and 5, the axes of the two through holes 5 are perpendicular, the structure is simple, and the transmission efficiency is high. Of course, the included angle between the axes of the two through holes 5 may also be an acute angle, and the axes of the two through holes 5 may also be parallel, which may be determined according to the actual situation.

When using, be connected driving shaft and driven shaft with first connecting portion 1 and second connecting portion 2 respectively, when the driving shaft is rotatory, drive connecting pin 4 through the first connecting portion 1 that is connected with the driving shaft and rotate, because connecting pin 4 runs through behind the through-hole 5 and is connected with first connecting portion 1, connecting pin 4 is connected with the fixed orifices promptly, thereby connecting pin 4 rotates and drives fixed block 3 and rotate, fixed block 3 rotates and drives another connecting pin 4 and rotate, thereby drive second connecting portion 2 and rotate, rotate in order to drive the driven shaft. Thereby realizing the common rotation of the driving shaft and the driven shaft.

As shown in fig. 5, the two through holes 5 on the fixing block 3 are independent from each other, that is, the axes of the two through holes 5 are not crossed, and the two through holes 5 are not communicated with each other, so that only the two connecting pins 4 need to be respectively inserted into the two through holes 5, and holes do not need to be formed in the connecting pins 4, thereby avoiding the phenomenon that the two connecting pins 4 are easily broken due to mutual abrasion, and improving the service life of the universal joint coupling.

It should be noted that, in the existing universal joint coupling, one of the two connecting pins is thick, a hole needs to be drilled on the thick connecting pin, and the thin connecting pin passes through the through hole of the thick connecting pin and is connected with the second connecting portion, so that after long-time use, the two connecting pins are worn away from each other, and the thin connecting pin is easily broken and needs to be replaced repeatedly, which increases the workload and increases the cost.

In the universal joint coupling provided by the embodiment, the diameters of the two connecting pins 4 can be the same, that is, the thicknesses of the two connecting pins 4 can be the same, so that the service lives of the two connecting pins 4 are the same, and the two connecting pins do not need to be replaced independently. Thereby reducing the cost and improving the service life of the universal joint coupling.

So set up, solved current shaft coupling and used for a long time and caused little pin and big fixed pin to damage cracked problem easily.

In this embodiment, as shown in fig. 2 and fig. 3, the first connecting portion 1 and the second connecting portion 2 are both provided with fixing holes into which the end portions of the connecting pins 4 extend, the end portions of the connecting pins 4 can be tightly fitted with the fixing holes, that is, the end portions of the connecting pins 4 can be fixed in the fixing holes, so that the connecting pins 4 can be fixedly connected with the first connecting portion 1 or the second connecting portion 2.

in one embodiment, as shown in fig. 2, two connecting pins 4 are riveted to the first connecting portion 1 and the second connecting portion 2, respectively, that is, after two ends of the connecting pin 4 are inserted into the fixing holes, the two ends of the connecting pin 4 are upset by a riveting machine or a hammer, and the two ends of the connecting pin 4 are formed into heads, so that the two connecting pins 4 are fixedly connected to the first connecting portion 1 and the second connecting portion 2, respectively. So, adopt riveting efficient, easy operation, connect and warp for a short time, joint strength is high, makes two connecting pin 4 more firm with the connection of first connecting portion and second connecting portion 2 respectively, difficult not hard up.

In another embodiment, as shown in fig. 3 and 4, the outer wall of one end of the connecting pin 4 is provided with knurling, the end of the connecting pin 4 with knurling is inserted into the fixing hole, and the knurling is tightly matched with the fixing hole, so that the connecting pin 4 and the connecting part are fixedly connected. That is, when attaching, the end of the connecting pin 4 having the knurling is hammered into the fixing hole by a hammer or the like, and the knurling is brought into close fit with the fixing hole, thereby fixing the connecting pin 4 and the connecting portion. So, connecting pin 4 and connecting portion are connected stably, are difficult not hard up to, the installation is simple and convenient, easily operation, and low cost.

In this embodiment, the connecting pin 4 is rotatably disposed in the through hole 5, that is, the connecting pin 4 can rotate in the through hole 5, so that the positions of the first connecting portion 1 and the second connecting portion 2 can be adjusted by the rotation angle of the connecting pin 4, that is, when the axes of the driving shaft and the driven shaft are not on the same straight line and the axes of the driving shaft and the driven shaft are crossed, the driving shaft and the driven shaft can be connected by adjusting the rotation angle of the connecting pin 4 to realize transmission, and thus, the universality of the universal joint coupling is improved.

wherein, in order to facilitate the rotation of the connecting pin 4 in the through hole 5, a bushing or a bearing may be provided in the through hole 5.

Further, as shown in fig. 5, a distance is provided between the two through holes 5, that is, the two through holes 5 are arranged at a distance and are not communicated with each other, so that it is further ensured that the connecting pins 4 located in the two through holes 5 are not in contact with each other, and thus, friction and abrasion are not generated between the two connecting pins 4, and the service life of the connecting pins 4 is prolonged.

In this embodiment, the one end that first connecting portion 1 and second connecting portion 2 are close to fixed block 3 all is provided with two relative engaging lugs, and the fixed orifices is located the engaging lug, and two connecting pins 4 can be fixed on the engaging lug through the riveting promptly, thereby two connecting pins 4 also can be fixed on the engaging lug through the one end that has the annular knurl closely cooperate with the fixed orifices on the engaging lug. The connection mode can be determined according to actual needs.

Preferably, as shown in fig. 6, in order to facilitate the rotation of the first connecting portion 1 and the second connecting portion 2 relative to the fixing block 3, a sleeve 6 is disposed in the fixing hole of the connecting lug, the sleeve 6 is sleeved outside the connecting pin 4, and the sleeve 6 and the connecting pin 4 can be riveted to form a fixed connection, and the sleeve 6 can rotate along with the connecting pin 4 in the fixing hole, so that the rotation of the first connecting portion 1 and the second connecting portion 2 relative to the connecting pin 4 is realized, and the rotation of the driving shaft and the driven shaft in different directions is realized.

it should be noted that the diameter of the head of the connecting pin 4 is larger than the diameter of the fixing hole, so that both ends of the connecting pin 4 do not come out of the fixing hole. That is, in this embodiment, each fixing hole is provided with a sleeve 6, and here, the universal joint coupling includes 4 sleeves 6 to ensure the stability of the universal joint coupling and balance the stress thereof, and is not easily damaged.

In another embodiment, a bearing is arranged in the fixing hole, the bearing is sleeved outside the connecting pin 4, the inner wall of the bearing is tightly connected with the connecting pin 4, and the connecting pin 4 and the connecting lug can rotate relatively through the bearing, so that the first connecting part 1 and the second connecting part 2 can rotate relative to the connecting pin 4, and the rotation of the driving shaft and the driven shaft in different directions can be realized.

It should be noted that the tight connection here may be that the connecting pin 4 is riveted with the bearing, or that the knurling of the connecting pin 4 forms a tight fit with the bearing, which may be determined according to actual needs.

Wherein, form the recess between two engaging lugs of first connecting portion 1 and second connecting portion 2, fixed block 3 can stretch into in the recess, and the engaging lug of first connecting portion 1 and second connecting portion 2 holds fixed block 3 in two recesses promptly, like this, has reduced the volume of universal joint coupling.

Further, the fixed block 3 can be a cuboid structure so as to punch two through holes 5 for the connecting pin 4 to extend into on the fixed block 3, of course, the fixed block 3 can also be other structures, and the shape of the fixed block can be determined according to actual needs.

In order to prevent the universal joint coupler from being scratched when being installed, the corners of the fixing block 3 are provided with smooth chamfers, so that a user is prevented from being scratched when being installed.

In this embodiment, the material of the first connecting portion 1 and the second connecting portion 2, the connecting pin 4, or the fixing block 3 may be 45 steel, may be 40Cr high-quality alloy steel, may be 304 stainless steel, or may be other materials, and the material thereof is not limited herein.

45 steel is also called "oil steel". The steel has high strength and good machinability.

40Cr is the GB standard steel grade in China, and 40Cr steel is one of the most widely used steels in the machine manufacturing industry. After quenching and tempering, the alloy has good comprehensive mechanical property, good low-temperature impact toughness and low notch sensitivity. The steel has good hardenability, can be quenched to phi 28-60 mm during water quenching, and can be quenched to phi 15-40 mm during oil quenching. The steel is suitable for cyaniding and high-frequency quenching besides quenching and tempering. The cutting performance is good, and when the hardness is 174-229 HB, the relative cutting processability is 60%.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. The utility model provides a universal joint coupling, is including first connecting portion (1) and second connecting portion (2) that are used for connecting driving shaft and driven shaft respectively, its characterized in that, still including fixed block (3) and two settings be in connecting pin (4) on fixed block (3), fixed block (3) are located first connecting portion (1) with between second connecting portion (2), two connecting pin (4) respectively with first connecting portion (1) with second connecting portion (2) are connected, and two connecting pin (4) mutually independent sets up.

2. The universal joint coupling according to claim 1, wherein the fixing block (3) is provided with two through holes (5) into which the two connecting pins (4) respectively extend, and the two connecting pins (4) respectively penetrate through the two through holes (5) and are respectively connected with the first connecting portion (1) and the second connecting portion (2).

3. A universal joint coupling according to claim 2, wherein the axes of the two through holes (5) are perpendicular.

4. A universal joint coupling according to claim 1, wherein the first connecting portion (1) and the second connecting portion (2) are provided with fixing holes into which the ends of the connecting pins (4) protrude.

5. A universal joint coupling according to claim 4, characterized in that the two connecting pins (4) are riveted to the first connecting portion (1) and the second connecting portion (2), respectively.

6. The universal joint coupling according to claim 4, wherein the connecting pin (4) is provided with a knurling on an outer wall of one end thereof, and the knurling is tightly fitted to the fixing hole.

7. A universal joint coupling according to claim 4, characterized in that the ends of the first (1) and second (2) connection portions near the fixed block (3) are each provided with two opposing lugs, on which the fixing holes are located.

8. the universal joint coupling according to claim 7, wherein a groove into which the fixing block (3) extends is formed between the two lugs of the first connecting portion (1) and the second connecting portion (2).

9. A universal joint coupling according to claim 1, wherein the fixed block (3) is of rectangular parallelepiped configuration.

10. A universal joint coupling according to claim 1, characterized in that the material of the first connection portion (1) and the second connection portion (2) is 45 steel or 40Cr high-quality alloy steel.