CN203404270U

CN203404270U - Shaft coupling

Info

Publication number: CN203404270U
Application number: CN201320478385.3U
Authority: CN
Inventors: 陈聪明
Original assignee: XIAMRN LIMBACH AIRCRAFT ENGINE Co Ltd
Current assignee: Xiamen Linbach Aero Engine Co ltd
Priority date: 2013-08-07
Filing date: 2013-08-07
Publication date: 2014-01-22
Anticipated expiration: 2023-08-07

Abstract

The utility model discloses a shaft coupling which comprises two metal bodies. The two metal bodies are generally in a ladder cylinder shape. Ladder through holes are formed in the middle of the bodies in the axial direction correspondingly. Key grooves are formed in the inner walls of small through holes. One end, with the large diameter, of each body is provided with four embedding grooves in the radial direction evenly in a machining mode. Four embedding protrusions are formed in each body between the four embedding grooves. An annular buffer pad is embedded on the four embedding grooves of each body, and the outer surface of the annular buffer pad is provided with eight connecting grooves evenly in the radial direction. Four connecting grooves of the annular buffer pad are matched with the four embedding protrusions of one body, and the other four connecting grooves of the annular buffer pad are matched with the four embedding protrusions of the other body. According to the shaft coupling, mutual impact of a driving shaft and a driven shaft which are connected with the shaft coupling can be effectively prevented, the service life of the shaft coupling is prolonged, and impact noise is lowered.

Description

A kind of shaft coupling

Technical field

The utility model relates to coupling manufacturing technology field, especially a kind of shaft coupling.

Background technique

In mechanical connecting structure, coupling is usually for the interconnecting of driving shaft and driven shaft, and the common structure of coupling is by flange, to be connected with bolt with driven shaft connecting end at driving shaft, but this linkage structure dismounting is comparatively loaded down with trivial details; Another kind of common structure is at driving shaft, to be connected end with driven shaft interface arrangment is set, an application number as disclosed on October 03rd, 2012 is 201210191262.1, name is called the application for a patent for invention of " coupling ", it comprises speed reducer and transmission shaft, speed reducer one end is provided with rotatingshaft, and rotatingshaft one end has annular boss structure; One end of transmission shaft has circular groove structure, and circular groove structure and annular boss structure are fastened togather.Although this coupling dismounting is more convenient, due to the existence in engaging gap, when commutation and speed change, it is larger that transmission shaft is subject to impact force, can produce unnecessary impact noise simultaneously, and coupling also damages than being easier to.

Model utility content

The technical problems to be solved in the utility model is to provide a kind of shaft coupling, effectively prevents that the driving shaft and the driven shaft that are connected with shaft coupling from impacting mutually, improves the working life of shaft coupling, reduces the appearance of impact noise.

For achieving the above object, the technical solution of the utility model is: a kind of shaft coupling, comprise that two are roughly the columniform metal body of ladder, the middle corresponding ladder hole that has vertically of described body, on compared with the inwall of small through hole, have keyway, larger-diameter one end of described body radially equalization is processed with four gomphosis grooves, on the body between four gomphosis grooves, form four chimeric projections, a radially impartial loop buffer pad that is provided with eight connecting grooves of outer surface is entrenched on four gomphosis grooves of described body, loop buffer pad four connecting grooves wherein match with four chimeric projections described in a body, other four connecting grooves of loop buffer pad match with four chimeric projections described in another body.

Further improve, two sides of each gomphosis groove of described body are the arc shaped surface concaving; Two sides of each connecting groove of described loop buffer pad are cambered outwards arc shaped surface.Strengthen the mutual chimeric fixing of loop buffer pad and body.

Further improve, on the larger-diameter one end of described body and four gomphosis groove next-door neighbours' outer circumferential face, respectively offer an arc slot to make way.Can alleviate weight the easy disassembly loop buffer pad of body.

Preferred described loop buffer pad is made of plastics.To facilitate manufacture.

Further improve, described each chimeric projection is middle along body shaft to offering through hole.Can alleviate the weight of body, also can facilitate other link to pass.

The utility model has a loop buffer pad due to chimeric on body, the outer surface of loop buffer pad radially equalization is provided with eight connecting grooves, four connecting grooves wherein match with four chimeric projections described in a body, four chimeric protruding phase clampings on another four connecting grooves of loop buffer pad and another body, two bodies are connected by loop buffer pad, it connects intermittently little, good buffer effect, when two bodies are respectively by after being connected with driven shaft with driving shaft compared with small through hole and keyway, can effectively prevent that driving shaft and driven shaft from impacting mutually, improve the working life of shaft coupling, reduce impact noise.

Accompanying drawing explanation

Fig. 1 is body of the utility model and the mutual chimeric stereogram of loop buffer pad;

Fig. 2 is the utility model body stereogram;

Fig. 3 is the utility model loop buffer pad plan view;

Fig. 4 is the left view of Fig. 1;

Fig. 5 is the utility model three-dimensional exploded view.

Embodiment

Below in conjunction with accompanying drawing and concrete mode of execution, the utility model is described in further detail.

Shown in Fig. 1 to Fig. 5, a kind of shaft coupling, comprise that two are roughly the columniform metal body 1 of ladder, the middle corresponding ladder hole that has vertically of described body 1, on compared with the inwall of small through hole 11, have keyway 111, larger-diameter one end of described body 1 radially equalization is processed with four gomphosis grooves 12, on the body between four gomphosis grooves 12, form four chimeric protruding 13, a radially impartial loop buffer pad 2 that is provided with eight connecting grooves 21 of outer surface is entrenched on four gomphosis grooves 12 of described body 1, loop buffer pad 2 four connecting grooves 21 wherein with described in a body 1 four chimeric protruding 13 match, other four connecting grooves 21 of loop buffer pad 2 with described in another body 1 four chimeric protruding 13 match.

Two sides of each gomphosis groove 12 of described body 1 are the arc shaped surface concaving.Two sides of each connecting groove 21 of described loop buffer pad 2 are cambered outwards arc shaped surface.Loop buffer pad 2 is mutually chimeric more firm with body 1 like this.

On the larger-diameter one end of described body 1 and four gomphosis groove 12 next-door neighbours' outer circumferential face, respectively offer an arc slot to make way 14.

Described each chimeric protruding 13 centre axially offer through hole 131 along body 1.

Described loop buffer pad 2 is made of plastic.

When the utility model is used, with being connected with driving shaft compared with small through hole 11 and keyway 111 of a body 1, with being connected with driven shaft compared with small through hole 11 and keyway 111 of another body 1, then utilize four gomphosis grooves 12 of loop buffer pad 2 to match with on a body 1 four chimeric protruding 13, utilize another four gomphosis grooves 12 on loop buffer pad 2 and on another body 1 four chimeric protruding 13 to fasten to form simultaneously and be connected.

Below be only preferred embodiment of the utility model, the change that those skilled in the art does to be equal to by claim all falls into the protection domain of this case.

Claims

1. a shaft coupling, comprise that two are roughly the columniform metal body of ladder, the middle corresponding ladder hole that has vertically of described body, on compared with the inwall of small through hole, have keyway, it is characterized in that: larger-diameter one end of described body radially equalization is processed with four gomphosis grooves, on the body between four gomphosis grooves, form four chimeric projections, a radially impartial loop buffer pad that is provided with eight connecting grooves of outer surface is entrenched on four gomphosis grooves of described body, loop buffer pad four connecting grooves wherein match with four chimeric projections described in a body, other four connecting grooves of loop buffer pad match with four chimeric projections described in another body.

2. a kind of shaft coupling according to claim 1, is characterized in that: two sides of each gomphosis groove of described body are the arc shaped surface concaving; Two sides of each connecting groove of described loop buffer pad are cambered outwards arc shaped surface.

3. a kind of shaft coupling according to claim 1, is characterized in that: on the larger-diameter one end of described body and four gomphosis groove next-door neighbours' outer circumferential face, respectively offer an arc slot to make way.

4. a kind of shaft coupling according to claim 1, is characterized in that: described loop buffer pad is made of plastics.

5. according to a kind of shaft coupling described in claim 1 to 4 any one, it is characterized in that: described each chimeric projection is middle along body shaft to offering through hole.