CN220540143U - Elastic coupling - Google Patents

Abstract

The utility model relates to the technical field of couplings, in particular to an elastic coupling which comprises a first half coupling, a second half coupling and an elastic element, wherein the elastic element is positioned between the first half coupling and the second half coupling; m first pin holes are formed in the first half coupling, N second pin holes are formed in the second half coupling, M first through holes corresponding to the first pin holes and N second through holes corresponding to the second pin holes are formed in the elastic element, the number of the M and the number of the N are not smaller than three, and the first through holes and the second through holes are staggered; a first pin shaft is arranged in the first pin hole and the corresponding first through hole and used for connecting the first half coupler and the elastic element; a second pin shaft is arranged in the second pin hole and the second through hole corresponding to the second pin hole and is used for connecting the second half coupling and the elastic element; the device can protect the damage of the driving element by instantaneous large torque in mechanical transmission and improve the stability of the transmission system in working.

Description

Elastic coupling

Technical Field

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

Background

In mechanical drive systems, couplings are commonly used to securely couple driving and driven members of different mechanisms for rotation together and to transfer the motion and torque of the driving member to the driven member.

In some mechanical transmissions, the coupling is generally required to transmit an instantaneous high torque and maintain the stability of the transmission, and at this time, the rigid coupling and the flexible coupling without elastic elements can transmit the instantaneous high torque, but the reverse impact on the driving elements such as a motor, an electric machine and the like may damage the driving elements and damage the stability of the transmission system.

Disclosure of Invention

The utility model aims to provide an elastic coupling which can protect an active element from damage due to instantaneous high torque in mechanical transmission and improve the stability of a transmission system in operation.

The technical scheme of the utility model is realized as follows:

an elastic coupling comprising a first coupling half and a second coupling half and an elastic element, the elastic element being located between the first coupling half and the second coupling half;

m first pin holes are formed in the first half coupling, N second pin holes are formed in the second half coupling, M first through holes corresponding to the first pin holes and N second through holes corresponding to the second pin holes are formed in the elastic element, the numbers of M and N are not smaller than three, and the first through holes and the second through holes are staggered;

a first pin shaft is arranged in the first pin hole and the first through hole corresponding to the first pin hole and used for connecting the first half coupler and the elastic element;

and a second pin shaft is arranged in the second pin hole and the second through hole corresponding to the second pin hole and used for connecting the second half coupling and the elastic element.

Further, the first half coupling and the second half coupling are both circular in diameter, and the elastic element is also circular.

Further, the diameters of the first pin shaft and the second pin shaft are the same, and the diameters of the first pin hole, the second pin hole, the first through hole and the second through hole are the same.

Further, m=n, M first pin holes are circumferentially distributed around the axis of the first half coupling, and N second pin holes are circumferentially distributed around the axis of the second half coupling.

Further, the diameter of the circle where the M first pin holes are located is equal to the diameter of the circle where the N second pin holes are located, the distance between the adjacent first through holes and the distance between the adjacent second through holes are equal, and all the first through holes and the second through holes are circumferentially distributed around the axis of the elastic element.

Further, the values of M and N are each six.

Further, a spline is arranged at the central shaft of the first half coupler, and the first half coupler can be connected with the driving element through the spline.

Further, an expansion sleeve is arranged at the central shaft of the second half coupling, and the second half coupling can be connected with the driven element through the expansion sleeve.

Further, the first pin shaft is embedded in the first pin hole.

Further, the second pin shaft is embedded in the second pin hole.

Compared with the prior art, the utility model has the beneficial effects that:

the elastic element is located between the first half coupler and the second half coupler, the first half coupler is fixedly connected with the elastic element through a plurality of first pin shafts, the second half coupler is fixedly connected with the elastic element through a plurality of second pin shafts, the first pin shafts and the second pin shafts are coaxial and are arranged in a staggered mode, the elastic coupler structure comprises the elastic element, large torque can be transmitted, and the first pin shafts and the second pin shafts which are arranged in a staggered mode are combined again to absorb instantaneous impulse, so that stability of a transmission system in operation is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an assembled structure of an elastic coupling of the present utility model after being connected to a driving member and a driven member, respectively;

FIG. 2 is a front view of a first coupling half of the present utility model;

FIG. 3 is a top view of a first coupling half of the present utility model;

fig. 4 is a top view of the elastic element of the present utility model.

In the figure:

1-a first half coupling; 101-a first mounting hole; 102-a first pin hole; 103-a first pin;

2-an elastic element; 201-a first via; 202-a second through hole;

3-second half coupling; 301-a second mounting hole;

302-a second pin hole; 303-a second pin;

4-expanding sleeve; 5-an active element; 6-a driven element.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Examples

Referring to fig. 1-4, the present embodiment provides an elastic coupling, which is actually applied to the coupling of a driving element 5 and a driven element 6, and mainly realizes the absorption of instantaneous impulse when transmitting large torque, thereby playing a role in buffering and vibration reduction, improving the working stability of a transmission system, and prolonging the service life.

The elastic coupling comprises a first half coupling 1, a second half coupling 3 and an elastic element 2, wherein the elastic element 2 is positioned between the first half coupling 1 and the second half coupling 3, and the first half coupling 1 and the second half coupling 3 are respectively connected with a driving element 5 and a driven element 6. A first mounting hole 101 for connecting the driving element 5 is provided in the center of the first coupling half 1. A second mounting hole 301 for connecting the driven element 6 is provided in the center of the second coupling half 3.

The elastic element 2 is made of a material having certain strength, toughness, hardness, etc. The first coupling half 1, the second coupling half 3 and the elastic element 2 are substantially identical in shape and are all circular.

The first half coupler 1 is provided with M first pin holes 102, the second half coupler 3 is provided with N second pin holes 302, the elastic element 2 is provided with M first through holes 201 corresponding to the first pin holes 102 and N second through holes 202 corresponding to the second pin holes 302, the values of M and N are not less than three, the first pin holes 102 and the second pin holes 302 are provided in plurality, and the first through holes 201 and the second through holes 202 are staggered with each other, i.e. the first through holes 201 and the second through holes 202 are not coaxial and have no overlapping portion.

The first through hole 201 and the second through hole 202 are designed in several ways:

first kind: the plurality of first through holes 201 are not circumferentially distributed around the axis of the elastic element 2, are distributed in a dispersed manner and are irregular, and the plurality of second through holes 202 are not circumferentially distributed around the axis of the elastic element 2, are distributed in a dispersed manner and are irregular;

second kind: the plurality of first through holes 201 are circumferentially distributed around the axis of the elastic element 2, and the plurality of second through holes 202 are not circumferentially distributed around the axis of the elastic element 2, are distributed in a scattered manner and are irregular;

third kind: the plurality of first through holes 201 are not circumferentially distributed around the axis of the elastic element 2, are distributed in a dispersed manner and are irregular, and the plurality of second through holes 202 are circumferentially distributed around the axis of the elastic element 2;

fourth kind: the plurality of first through holes 201 are circumferentially distributed around the axis of the elastic element 2, the plurality of second through holes 202 are also circumferentially distributed around the axis of the elastic element 2, and the plurality of first through holes 201 and the plurality of second through holes 202 are not in the same circle;

fifth: the plurality of first through holes 201 are circumferentially distributed around the axis of the elastic element 2, and the plurality of second through holes 202 are also circumferentially distributed around the axis of the elastic element 2, the plurality of first through holes 201 being in the same circle as the plurality of second through holes 202.

The first pin hole 102 and the corresponding first through hole 201 are internally provided with a first pin 103, that is, one half of the first pin 103 is installed in the first through hole 201, and the other half is installed in the first pin hole 102, so that the first half coupling 1 and the elastic element 2 can be connected.

The second pin hole 302 and the corresponding second through hole 202 are provided with a second pin 303, that is, one half of the second pin 303 is installed in the second through hole 202, and the other half is installed in the second pin hole 302, so that the second coupling half 3 and the elastic element 2 can be connected. After the first pins 103 and the second pins 303 are installed, the first half coupling 1, the second half coupling 3 and the elastic element 2 are connected with each other, so that the elastic coupling is assembled.

Preferably, the first half coupling 1 and the second half coupling 3 are circular in shape with the same diameter, and the elastic element 2 is also circular.

Preferably, the first half coupling 1 and the second half coupling 3 are identical in basic structure, are circular and have the same diameter, and are designed with the same number of pins of the same size on the half coupling plates for transmitting torque.

The diameters of the first pin 103 and the second pin 303 are the same, and the diameters of the first pin hole 102, the second pin hole 302, the first through hole 201, and the second through hole 202 are the same.

Preferably, m=n, M first pin holes 102 are circumferentially distributed around the axis of the first half coupling 1, and N second pin holes 302 are circumferentially distributed around the axis of the second half coupling 3.

The design of the first through hole 201 and the second through hole 202 is preferably the fifth design, and the pins on the first half coupling 1 and the second half coupling 3 are uniformly distributed on the same scale circle, that is, the diameters of the circles of the plurality of first pins 103 and the circles of the plurality of second pins 303 are the same.

The main difference between the two-piece coupling halves (i.e. the first coupling half 1 and the second coupling half 3) is the manner of coupling with the driving element 5 and the driven element 6; the elastic element 2 is made of a material having certain strength, toughness, hardness and other characteristics, the outer diameter of the elastic element is basically consistent with the outer diameters of the half-coupling plates of the first half-coupling 1 and the second half-coupling 3, and the elastic element 2 is axially provided with a first through hole 201 with the same diameter as the first pin hole 102 and a second through hole 202 with the same diameter as the second pin hole 302.

Preferably, the diameter of the circle where the M first pin holes 102 are located is equal to the diameter of the circle where the N second pin holes 302 are located, and the distances between the adjacent first through holes 201 and the second through holes 202 are equal, and all the first through holes 201 and the second through holes 202 are circumferentially distributed around the axis of the elastic element 2. Thus, the first pin bore 102 and the second pin bore 302 are identical and are both referred to simply as pin bores. The number of pin holes in the elastic element 2 is (m+n) in total and all the pin holes are distributed in a circumferential array around the axis of the elastic element 2.

Preferably, the number of M and N is six, and the number of the first pin holes 102 and the number of the second pin holes 302 on the elastic element 2 are six, and the total number is twelve, as shown in fig. 4. Twelve pin holes on the elastic element 2, one half is used for installing the first pin 103, the other half is used for installing the second pin 303, and the first pin 103 and the second pin 303 are also installed in a crossed manner, so that movement and torque transmission are realized.

It should be noted that: the central shaft of the first half coupler 1 is provided with a spline, and the first half coupler 1 can be connected with the driving element 5 through the spline. The central shaft of the second coupling half 3 is provided with an expansion sleeve 4, and the second coupling half 3 can be connected with a driven element 6 through the expansion sleeve 4. In addition, when the first pin shaft 103 is installed in the first pin hole 102, the first pin shaft 103 needs to be assembled in the first pin hole 102 in an embedded mode, so that the end portion of the first pin shaft 103 does not protrude out of the first pin hole 102, space is saved, meanwhile, connection and assembly of the first half coupler 1 and the driving element 5 are not affected, and assembly interference is avoided. Similarly, when the second pin shaft 303 is installed in the second pin hole 302, the second pin shaft 303 needs to be assembled in the second pin hole 302 in an embedded manner, so that the end part of the second pin shaft 303 does not protrude out of the second pin hole 302, the space is saved, the connection and the assembly of the second coupling half 3 and the driven element 6 are not influenced, and the assembly interference is avoided.

The technical scheme of the utility model has the beneficial effects that:

an elastic coupling is designed, the structure of the elastic coupling comprises an elastic element 2, so that not only can large torque be transmitted, but also instantaneous impulse can be absorbed, and the stability of a transmission system during operation is ensured.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An elastic coupling, characterized by comprising a first coupling half (1) and a second coupling half (3) and an elastic element (2), said elastic element (2) being located between said first coupling half (1) and said second coupling half (3);

m first pin holes (102) are formed in the first half coupling (1), N second pin holes (302) are formed in the second half coupling (3), M first through holes (201) corresponding to the first pin holes (102) and N second through holes (202) corresponding to the second pin holes (302) are formed in the elastic element (2), the numbers of M and N are not smaller than three, and the first through holes (201) and the second through holes (202) are arranged in a staggered mode;

a first pin shaft (103) is arranged in the first pin hole (102) and the first through hole (201) corresponding to the first pin hole, and is used for connecting the first half coupler (1) and the elastic element (2);

and a second pin shaft (303) is arranged in the second pin hole (302) and the second through hole (202) corresponding to the second pin hole and is used for connecting the second half coupling (3) and the elastic element (2).

2. Elastic coupling according to claim 1, characterized in that the first coupling half (1) and the second coupling half (3) are circular in shape with the same diameter, and the elastic element (2) is also circular.

3. The elastic coupling according to claim 2, characterized in that the first pin (103) and the second pin (303) have the same diameter, and the first pin bore (102), the second pin bore (302), the first through hole (201) and the second through hole (202) have the same diameter.

4. A flexible coupling according to claim 3, wherein M = N, M said first pin holes (102) are circumferentially distributed about the axis of said first coupling half (1), and N said second pin holes (302) are circumferentially distributed about the axis of said second coupling half (3).

5. The elastic coupling according to claim 4, characterized in that the diameter of the circle in which the M first pin holes (102) are located is equal to the diameter of the circle in which the N second pin holes (302) are located, and the distances between the adjacent first through holes (201) and the second through holes (202) are equal, all the first through holes (201) and the second through holes (202) being circumferentially distributed around the axis of the elastic element (2).

6. The flexible coupling of claim 5, wherein M and N are each six in value.

7. An elastic coupling according to claim 1, characterized in that the central shaft of the first coupling half (1) is provided with splines, the first coupling half (1) being connectable with the driving element (5) by means of splines.

8. Elastic coupling according to claim 1, characterized in that the central shaft of the second coupling half (3) is provided with a expansion sleeve (4), through which expansion sleeve (4) the second coupling half (3) can be connected with the driven element (6).

9. The elastic coupling according to claim 1, characterized in that the first pin shaft (103) fits embedded in the first pin hole (102).

10. The elastic coupling according to claim 1, characterized in that the second pin shaft (303) fits embedded in the second pin hole (302).