CN215567424U

CN215567424U - Expansion type coupling

Info

Publication number: CN215567424U
Application number: CN202121560218.4U
Authority: CN
Inventors: 吴标
Original assignee: Wuxi Julihe Machinery Technology Co ltd
Current assignee: Wuxi Julihe Machinery Technology Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-01-18
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses an expansion type coupler and relates to the technical field of couplers. Wherein, this tight coupling that expands includes: a connecting rod assembly, both ends of which are respectively provided with an elastic circular ring convex part; the two coupling assemblies are respectively arranged at two ends of the connecting rod assembly, and circular concave parts are formed in the two coupling assemblies; the elastic circular ring convex part is matched with the circular concave part, so that the connecting rod assembly is respectively matched with the two coupler assemblies in an elastic mode. The utility model solves the problem that the existing coupling adopts a fastening mode of a bolt and a nut, and the connecting rod assembly can generate larger centrifugal force when the shaft rotates at high speed; and the centrifugal force is larger as the rotating speed is higher; under the action of power and centrifugal force, the load of the screw and the elastic diaphragm group of the coupler is intensified until the centrifugal force is larger than the range which can be borne by the screw and the elastic diaphragm group, so that the problems of screw breakage, uneven stress of the diaphragm group after the screw breakage, tearing failure are caused.

Description

Expansion type coupling

Technical Field

The utility model relates to the technical field of couplings, in particular to an expansion type coupling.

Background

The coupling is a device for coupling a shaft to a shaft, and mainly functions to transmit torque. The existing coupling connection mode is shown in fig. 1-2, and adopts a bolt and nut fastening mode, and when a shaft rotates at a high speed, a connecting rod assembly generates a larger centrifugal force; and the centrifugal force is larger as the rotating speed is higher; under the action of power and centrifugal force, the load of the screw and the elastic diaphragm group of the coupler is intensified until the centrifugal force is larger than the range which can be borne by the screw and the elastic diaphragm group, so that the screw is broken, and the diaphragm group is unevenly stressed, torn and failed after the screw is broken. In view of the above problems, no effective solution has been proposed.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: an expanding coupler is provided to solve the above problems in the prior art.

The technical scheme is as follows: an expanding coupling comprising:

a connecting rod assembly, both ends of which are respectively provided with an elastic circular ring convex part; the two coupling assemblies are respectively arranged at two ends of the connecting rod assembly, and circular concave parts are formed in the two coupling assemblies; the elastic circular ring convex part is matched with the circular concave part, so that the connecting rod assembly is respectively matched with the two coupler assemblies in an elastic mode.

Preferably, the connecting rod assembly includes: the connecting rod and two connecting bodies, two the connecting body set up respectively in the connecting rod both ends, the connecting body pass through locking screw with the connecting rod is connected.

Preferably, the coupling assembly comprises: the elastic diaphragm group is arranged on one side, far away from the locking ring, of the base.

Preferably, the elastic diaphragm group is fixedly connected with the base through a screw bolt for plugging and driving.

Preferably, self-locking washers are arranged on two sides of the elastic diaphragm group.

Preferably, the elastic diaphragm group and the self-locking washer are fixedly arranged on the base through a second screw opposite to the locking direction of the plug screw stud.

Has the advantages that: in the embodiment of the application, an elastic matching mode is adopted, and the elastic circular ring convex part is matched with the circular concave part, so that the connecting rod assembly is respectively matched with the two coupler assemblies in an elastic mode, the purpose of elastic matching connection is achieved, the technical effects of bearing centrifugal force and deviation-correcting centrifugal force are achieved, and the problem that the existing coupler adopts a bolt-nut fastening mode, and the connecting rod assembly generates larger centrifugal force when a shaft rotates at a high speed is solved; and the centrifugal force is larger as the rotating speed is higher; under the action of power and centrifugal force, the load of the screw and the elastic diaphragm group of the coupler is intensified until the centrifugal force is larger than the range which can be borne by the screw and the elastic diaphragm group, so that the technical problems that the screw is broken, and the diaphragm group is stressed unevenly and torn to lose efficacy after the screw is broken are caused.

Drawings

Fig. 1 is a schematic perspective view of a conventional coupling;

FIG. 2 is a cross-sectional view of a prior art coupling;

FIG. 3 is a schematic plan view of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure A-A of the present invention;

FIG. 5 is a schematic exploded view of the present invention in a planar configuration;

FIG. 6 is an exploded perspective view of the present invention;

fig. 7 is a schematic view of the locking structure of the plug screw membrane of the utility model.

The reference signs are: 1. a connecting rod assembly; 11. an elastic annular protrusion; 12. a connecting rod; 13. a coupling body; 14. locking screws; 2. a coupling assembly; 21. a circular recess; 22. a base; 23. locking a ring; 24. an elastic diaphragm set; 25. a first screw; 26. plugging and punching a screw stud; 27. a self-locking washer; 28. a second screw; 3. a conical surface; 4. a bevel.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.

As shown in fig. 3-6, the present application relates to an expanding coupling. This compact form shaft coupling expands includes: a connecting rod assembly 1, both ends of which are respectively provided with an elastic circular ring convex part 11; the two coupling assemblies 2 are respectively arranged at two ends of the connecting rod assembly 1, and circular concave parts 21 are formed in the two coupling assemblies; the elastic circular ring convex part 11 is matched with the circular concave part 21, so that the connecting rod assembly 1 is respectively matched with the two coupler assemblies 2 in an elastic mode.

The connecting rod assembly 1 is a rod piece with a connecting function and can realize the effect of fixing and connecting with other parts; further, the connecting rod 12 is made of carbon fiber. The effect of improving the durability in use can be realized while ensuring sufficient strength, and both ends of the elastic ring convex parts 11 are respectively arranged; good fixed connection effect can be realized, so that the rudiment of the structure is realized; meanwhile, the circular ring bulge is arranged, so that the interference fit effect of other parts can be realized, and a good connection effect is realized; the two coupling assemblies 2 are respectively arranged at two ends of the connecting rod assembly 1, and circular concave parts 21 are formed in the two coupling assemblies; the good fixing and connecting effect can be realized, so that the structure can be simplified, and the stability of the structure can be improved; by providing the circular recess 21, an effect of fitting with other components can be achieved;

the elastic circular ring convex part 11 is matched with the circular concave part 21, so that the connecting rod assembly 1 is respectively matched with the two coupler assemblies 2 in an elastic mode. Through the assembly mode that adopts ring convex part and circular concave part 21 interference, can make original rigid connection change into elastic connection to can realize that the structure is more reasonable, the load that can bear improves greatly. Under the prerequisite of same operating mode, this patent can bear higher rotational speed than current structure. And meanwhile, the expansion mode is adopted, so that the rigid connection of a mechanical structure, namely the connection mode of the bolt and the nut, can be avoided, the influence of various factors such as centrifugal force, torsional force, shearing force or impact force is avoided, the service life of the structure is prolonged, and the market competitiveness is improved. The correction capability can be improved, and therefore the effect of automatic adjustment can be achieved.

The utility model uses the convex part of the connecting rod component 1 and the concave parts of the two coupling components 2 to elastically cooperate to bear the main centrifugal force; the new structure uses the screw plug and stud 26 to bear the small-range coupler deviation rectifying centrifugal force. The new structure effectively improves the service life of the lengthened coupler; the rotating speed is effectively improved by 50 percent (the rotating speed of the old coupler is 3500 rpm; the maximum range of the new structure is 7000 rpm), and the efficiency of the application scene is improved.

The following two points are specifically protected: 1. so that the connecting rod assembly 1 and the two coupling assemblies 2 are in an elastic matching structure. The claimed invention is not affected by variations in physical dimensions and shapes.

2. The rotational force load is borne using the setscrew stud 26; the claimed invention is not affected by variations in physical dimensions and shapes.

From the above description, it can be seen that the following technical effects are achieved by the present application:

in the embodiment of the application, an elastic matching mode is adopted, the elastic circular ring convex part 11 is matched with the circular concave part 21, so that the connecting rod assembly 1 is respectively matched with the two coupler assemblies 2 in an elastic mode, the purpose of elastic matching connection is achieved, the technical effects of bearing centrifugal force and deviation-rectifying centrifugal force are achieved, and the problem that the existing coupler adopts a bolt-nut fastening mode, and when a shaft rotates at a high speed, the connecting rod assembly 1 can generate larger centrifugal force is solved; and the centrifugal force is larger as the rotating speed is higher; under the action of power and centrifugal force, the load of the screw and the elastic diaphragm group 24 of the coupler is intensified until the centrifugal force is larger than the range which can be borne by the screw and the elastic diaphragm group 24, so that the technical problems of screw fracture, uneven stress of the diaphragm group after the screw fracture, tearing failure are caused.

Further, the connecting rod assembly 1 includes: the connecting rod 12 and two coupling bodies 13, two coupling bodies 13 set up respectively in connecting rod 12 both ends, coupling body 13 pass through locking screw 14 with connecting rod 12 is connected. By adopting a mode of fixing by a plurality of locking screws 14, the effect of fixedly connecting the connecting rod 12 and the connecting body 13 can be realized, thereby ensuring the stability of the structure. Preferably, the number of locking screws 14 is four. An effect of ensuring stable connection can be achieved.

As shown in fig. 3, 4 and 7, the coupling assembly 2 comprises: the base 22 is connected with the locking ring 23 through a plurality of first screws 25, and the elastic diaphragm group 24 is arranged on the side, far away from the locking ring 23, of the base 22. A good connection effect can be achieved, so that a matching effect with the coupling body 13 is achieved. Preferably, the intersection between the inner wall of the locking ring 23 and the outer wall of the base 22 is a tapered surface 3. By using the form of the tapered surface 3, the effect of improving the locking degree can be achieved, thereby preventing the occurrence of separation.

Further, the elastic diaphragm set 24 is fixedly connected with the base 22 through a screw stud 26. By using the slip screw studs 26, a small range of coupling offset centrifugal forces can be tolerated. The plug screw stud 26 is locked to the base 22 by the elastic diaphragm group 24, so that the elastic diaphragm group 24 can be fixedly locked to the base 22, and a good fixing effect is achieved. Preferably, a counter bore is arranged at one end of the connecting body 13 close to the elastic diaphragm group 24, and is used for placing a screw cap to prevent interference.

Further, self-locking washers 27 are arranged on two sides of the elastic diaphragm group 24. By providing the self-locking washer 27, the locking effect can be improved, thereby further preventing the diaphragm from displacing.

Further, the elastic diaphragm set 24 and the self-locking washer 27 are fixedly disposed on the base 22 by a second screw 28 opposite to the locking direction of the screw bolt 26. Through being provided with second screw 28, can realize further locking elastic diaphragm group 24, can also realize base 22 and hookup body 13 fixed connection to realize good fixed connection effect.

Further, an inclined surface 4 is arranged on the outer side of the connecting body 13, and the diameter of the tail end of the inclined surface 4 is consistent with that of the connecting rod 12. The effect of smooth and easy transition can be realized to the condition of interference can be prevented taking place, the pleasing to the eye degree of structure can also be promoted.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.

Claims

1. An expanding coupling, comprising: a connecting rod assembly, both ends of which are respectively provided with an elastic circular ring convex part; the two coupling assemblies are respectively arranged at two ends of the connecting rod assembly, and circular concave parts are formed in the two coupling assemblies; the elastic circular ring convex part is matched with the circular concave part, so that the connecting rod assembly is respectively matched with the two coupler assemblies in an elastic mode.

2. The expanding coupling of claim 1, wherein the connecting rod assembly comprises: the connecting rod and two connecting bodies, two the connecting body set up respectively in the connecting rod both ends, the connecting body pass through locking screw with the connecting rod is connected.

3. The expanding coupling of claim 2, wherein the coupling assembly comprises: the elastic diaphragm group is arranged on one side, far away from the locking ring, of the base.

4. The expanding coupling of claim 3, wherein the resilient diaphragm pack is fixedly connected to the base by a setscrew stud.

5. The expanding coupling of claim 4, wherein the set of resilient diaphragms is provided with self-locking washers on both sides.

6. The expanding coupling of claim 5, wherein the elastic diaphragm set and the self-locking washer are fixedly arranged on the base by a second screw opposite to the locking direction of the screw stud of the driving plug.