CN203285872U - Coupler - Google Patents

Abstract

The utility model provides a coupler which comprises a coupler body. Through holes are formed in two end faces of the coupler body and penetrate through the coupler body. An annular protrusion extends outwards from the end portion of the coupler body in the radial direction, teeth grooves are evenly formed in a side wall of the annular protrusion in the circumferential direction, internal splines are formed in the inner wall of each through hole, at least two positioning holes are evenly formed in the end face of the annular protrusion in the circumferential direction, and oil holes are formed in the side wall of the coupler body. According to the coupler, the internal splines are adopted to achieve connection with shafts, the coupler is good in centering performance, little in stress concentration and large in bearing capacity; due to the fact that a serpentine spring is used for connection, the resonance phenomenon is avoided, the service life of the coupler is long, and working noise is reduced; due to the fact that the positioning holes are arranged, the coupler is convenient to position and install.

Description

Coupling

Technical field

The utility model relates to a kind of coupling, particularly a kind of coupling.

Background technique

In machinery, usually use coupling and realize axial force transmission on the heavy ore deposits such as excavator, traditional coupling, in when work, easily produces resonance, the larger and fragile coupling of noise; And traditional coupling adopts flat key to connect, and when transmitting high moment of torsion, produces the stress concentration phenomenon, if things go on like this, causes the coupling fracture.

The model utility content

The technical problem that (one) will solve

When the technical problems to be solved in the utility model is to provide a kind of work, without resonance phenomenon, noise is low, the coupling of the stable and long service life of transmission.

(2) technological scheme

For solving the problems of the technologies described above, the utility model provides a kind of coupling, comprise coupling body 1, the both ends of the surface of described coupling body 1 are penetrated with through hole, the end of described coupling body 1 annular protrusion 2 that extended radially outwardly, the sidewall of described annular protrusion 2 circumferentially is evenly equipped with teeth groove 3, and the inwall of described through hole offers internal spline 4, the end face of described annular protrusion 2 circumferentially is evenly equipped with at least two positioning holes 5, and the sidewall of described coupling body 1 offers oilhole 6.

Further, described internal spline 4 is involute inner spline.

Further, described positioning hole 5 is four.

Further, the inwall of described oilhole 6 offers the sealed pipe screw thread.

(3) beneficial effect

The utility model coupling, the realization of employing internal spline is connected with axle, and centering is good, and stress is concentrated little, and bearing capacity is large; Connect by serpentine spring, avoided resonance phenomenon, long service life and reduced operational noise; Be provided with positioning hole, location and installation is convenient.

Description of drawings

Fig. 1 is the structural representation of the utility model coupling;

Fig. 2 is the sectional view of the utility model coupling.

Embodiment

consult Fig. 1～Fig. 2, the utility model provides a kind of coupling, comprise coupling body 1, the both ends of the surface of coupling body 1 are penetrated with through hole, annular protrusion 2 has extended radially outwardly in the end of coupling body 1, sidewall at this annular protrusion 2 circumferentially is evenly equipped with teeth groove 3, this teeth groove is rectangle groove, be used for installing serpentine spring, inwall at through hole offers internal spline 4, in the present embodiment, this internal spline 4 is involute inner spline, end face at annular protrusion 2 circumferentially is evenly equipped with at least two positioning holes 5, the convenient location of installing, in the present embodiment, be provided with four positioning holes 5, sidewall at coupling body 1 offers oilhole 6, inwall at oilhole 6 offers the sealed pipe screw thread.

The utility model coupling, the realization of employing internal spline is connected with axle, and centering is good, and stress is concentrated little, and bearing capacity is large; Connect by serpentine spring, avoided resonance phenomenon, long service life and reduced operational noise; Be provided with positioning hole, location and installation is convenient.

The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (4)

1. coupling, it is characterized in that: comprise coupling body (1), the both ends of the surface of described coupling body (1) are penetrated with through hole, the end of described coupling body (1) annular protrusion (2) that extended radially outwardly, the sidewall of described annular protrusion (2) circumferentially is evenly equipped with teeth groove (3), the inwall of described through hole offers internal spline (4), the end face of described annular protrusion (2) circumferentially is evenly equipped with at least two positioning holes (5), and the sidewall of described coupling body (1) offers oilhole (6).

2. coupling as claimed in claim 1, it is characterized in that: described internal spline (4) is involute inner spline.

3. coupling as claimed in claim 1, it is characterized in that: described positioning hole (5) is four.

4. coupling as claimed in claim 1, it is characterized in that: the inwall of described oilhole (6) offers the sealed pipe screw thread.

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