阅读说明：本技术 轴与毂的新型连接结构 (Novel connecting structure of shaft and hub ) 是由 王成 魏昊 朱红安 穆树亮 于 2020-04-15 设计创作，主要内容包括：一种轴与毂的新型连接结构,包括有轴以及毂,在轴上设置连接柱,在毂上设置连接环,连接环与连接柱之间形成安装槽,在安装槽内设置环形键。轴旋转时所传递的作用力通过连接柱与环形键接触的侧面以压力形式传递至环形键上,环形键通过与安装槽接触的侧面以压力形式将作用力传递至安装槽上,由安装槽将作用力传递给毂并使得毂随轴旋转。采用环形键传递作用力,环形键的加工及装配都非常简单,环形键优选为标准圆环结构,其制造精度也很容易保证。本发明所设计结构可以配合普通键的扭矩传递形式使用,也可以单独使用。本发明能够为机械设计人员提供了一个轴与毂之间连接的全新的设计思路,对传统机械设计方法是一个有益的补充。(The utility model provides a novel connection structure of axle and hub, is including axle and hub, at epaxial spliced pole that sets up, sets up the go-between on the hub, forms the mounting groove between go-between and the spliced pole, sets up annular key in the mounting groove. The effort that transmits when the axle is rotatory transmits to annular key with the pressure form through the side of spliced pole with annular key contact on, annular key transmits the effort to the mounting groove with the pressure form through the side with the mounting groove contact on, transmits the effort to the hub and makes the hub rotate along with the axle by the mounting groove. The annular key is adopted to transmit acting force, the processing and the assembly of the annular key are very simple, the annular key is preferably a standard circular ring structure, and the manufacturing precision is easy to guarantee. The design structure of the invention can be used in a torque transmission mode of a common key or can be used independently. The invention can provide a brand new design idea of connection between the shaft and the hub for mechanical designers, and is a beneficial supplement to the traditional mechanical design method.)

1. A novel connecting structure of a shaft and a hub is characterized in that,

the shaft comprises a shaft (1) and a hub (2), wherein the hub is arranged at the shaft end of the shaft, one end of the shaft, which is used for installing the hub, is an installation end, and one end of the hub, which is on the same side with the installation end, is a connecting end;

a connecting column (3) is arranged on the end face of the mounting end, the outer diameter of the connecting column is smaller than that of the mounting end, a connecting ring (4) is arranged on the end face of the connecting end, the inner diameter of the connecting ring is larger than that of the connecting end, the connecting ring is sleeved on the outer side of the connecting column, a gap is formed between the connecting ring and the connecting column to form a mounting groove, and an annular key (5) is arranged in the mounting groove;

the acting force transmitted when the shaft rotates is transmitted to the annular key in a pressure mode through the side face of the connecting column, which is in contact with the annular key, the acting force is transmitted to the mounting groove in a pressure mode through the side face of the annular key, which is in contact with the mounting groove, the acting force is transmitted to the hub through the mounting groove, and the hub rotates along with the shaft.

2. The novel shaft-hub connection structure according to claim 1,

the connecting column is a cylinder, the axis of the connecting column is parallel to the axis of the shaft, and the connecting column is an eccentric column on the shaft;

the inner ring surface of the connecting ring is of a circular structure, the connecting ring is arranged on the hub, the inner ring surface of the connecting ring is an eccentric circle relative to the axis of the hub, and the inner ring surface of the connecting ring is concentric with the connecting column;

after the shaft is assembled with the hub, the connecting ring and the connecting column are coaxial and form the mounting groove, and the mounting groove is an eccentric circular groove relative to the axis of the shaft;

the annular key is of a circular ring structure.

3. The novel shaft-hub connection structure according to claim 1,

the connecting column is a cylinder, the axis of the connecting column is parallel to the axis of the shaft, and the connecting column is an eccentric column on the shaft;

the inner ring surface of the connecting ring is of a circular structure, the connecting ring is arranged on the hub, the inner ring surface of the connecting ring is an eccentric circle relative to the axis of the hub, and the inner ring surface of the connecting ring is concentric with the connecting column;

after the shaft is assembled with the hub, the axis of the inner annular surface of the connecting ring is parallel to the axis of the connecting column, the axis of the inner annular surface of the connecting ring is eccentric relative to the axis of the connecting column, and the mounting groove formed by the connecting ring and the connecting column is a special annular groove;

the contour shape of the annular key is matched with the shape of the mounting groove.

4. A novel shaft-hub connection according to claim 3,

the end face of the mounting end is coplanar with the end face of the connecting end.

5. The novel shaft-hub connection structure according to claim 4,

the connecting column is integrally formed on the shaft;

the connecting ring is integrally formed on the hub;

the annular key is of an integrated structure.

6. The novel shaft-hub connection structure according to claim 2,

also comprises an end cover (6);

the end cover is arranged on the mounting end of the shaft, and one side surface of the end cover is abutted against the connecting column and the connecting ring;

the end face of the connecting column is provided with at least one bolt hole, the end cover is provided with an end cover through hole corresponding to the bolt hole, and a connecting bolt (7) in threaded fit with the bolt hole is arranged on the end cover through hole.

7. The novel shaft-hub connection structure according to claim 6,

the hole axis of the bolt hole is parallel to the axis of the connecting column;

the bolt holes are arranged in two numbers, and the two bolt holes are symmetrically arranged by taking the axis of the connecting column as a symmetric center.

8. The novel shaft-hub connection structure according to claim 6,

the outer edge range of the end cover is not larger than that of the mounting end.

9. The novel shaft-hub connection structure according to any one of claims 1 to 8,

the heights of the connecting column, the connecting ring and the annular key are consistent;

the outer side face of the connecting column is completely attached to the inner ring face of the annular key, and the outer side face of the annular key is completely attached to the inner ring face of the connecting ring.

10. The novel shaft-hub connection structure according to claim 1,

the mounting groove is a triangular groove, a rectangular groove, an elliptical groove or a polygonal groove.

Technical Field

The invention relates to the technical field of connection structures among components, in particular to a novel connection structure of a shaft and a hub.

Background

In the field of mechanical manufacturing, common keys include a common flat key, a guide flat key, a semicircular key, a wedge-shaped key, a hook key, a tangential key and the like. The above key types are common and common, and can be easily found in mechanical design manuals. The key connections are accessible by almost every machine design engineer, every mechanic every day. However, these keys utilize the side shear resistance of the key body to transmit the torque from the shaft to the hub, so when the length of the key is limited, the strength of the key is often the weak point of the transmission, and therefore, depending on the torque transmission requirements, sometimes double bonds or even splines have to be used. No matter adopt the double bond, adopt spline structure still, it all requires higher to shaft and hub, and the processing technology degree of difficulty is great.

Disclosure of Invention

In summary, it is an urgent need to solve the problem of the art to provide a structure that has low machining precision and difficulty and can connect a shaft and a hub.

In order to solve the problems of the prior art, the invention provides the following technical scheme:

the invention provides a novel connecting structure of a shaft and a hub, which comprises the shaft and the hub, wherein the hub is arranged at the shaft end of the shaft, one end of the shaft, which is used for installing the hub, is an installing end, and one end of the hub, which is on the same side with the installing end, is a connecting end;

a connecting column is arranged on the end face of the mounting end, the outer diameter of the connecting column is smaller than that of the mounting end, a connecting ring is arranged on the end face of the connecting end, the inner diameter of the connecting ring is larger than that of the connecting end, the connecting ring is sleeved on the outer side of the connecting column, a gap is formed between the connecting ring and the connecting column to form a mounting groove, and an annular key is arranged in the mounting groove;

the acting force transmitted when the shaft rotates is transmitted to the annular key in a pressure mode through the side face of the connecting column, which is in contact with the annular key, the acting force is transmitted to the mounting groove in a pressure mode through the side face of the annular key, which is in contact with the mounting groove, the acting force is transmitted to the hub through the mounting groove, and the hub rotates along with the shaft.

Preferably, in the novel connecting structure of the shaft and the hub provided by the invention, the connecting column is a cylinder, the axis of the connecting column is parallel to the axis of the shaft, and the connecting column is an eccentric column on the shaft; the inner ring surface of the connecting ring is of a circular structure, the connecting ring is arranged on the hub, the inner ring surface of the connecting ring is an eccentric circle relative to the axis of the hub, and the inner ring surface of the connecting ring is concentric with the connecting column; after the shaft is assembled with the hub, the connecting ring and the connecting column are coaxial and form the mounting groove, and the mounting groove is an eccentric circular groove relative to the axis of the shaft; the annular key is of a circular ring structure.

Preferably, in the novel connecting structure of the shaft and the hub provided by the invention, the connecting column is a cylinder, the axis of the connecting column is parallel to the axis of the shaft, and the connecting column is an eccentric column on the shaft; the inner ring surface of the connecting ring is of a circular structure, the connecting ring is arranged on the hub, the inner ring surface of the connecting ring is an eccentric circle relative to the axis of the hub, and the inner ring surface of the connecting ring is concentric with the connecting column; after the shaft is assembled with the hub, the axis of the inner annular surface of the connecting ring is parallel to the axis of the connecting column, the axis of the inner annular surface of the connecting ring is eccentric relative to the axis of the connecting column, and the mounting groove formed by the connecting ring and the connecting column is a special annular groove; the contour shape of the annular key is matched with the shape of the mounting groove.

Preferably, in the novel connecting structure of the shaft and the hub provided by the invention, the end surface of the mounting end is coplanar with the end surface of the connecting end.

Preferably, in the novel connecting structure of the shaft and the hub provided by the invention, the connecting column is integrally formed on the shaft; the connecting ring is integrally formed on the hub; the annular key is of an integrated structure.

Preferably, in the novel connecting structure of the shaft and the hub, provided by the invention, an end cover is further included; the end cover is arranged on the mounting end of the shaft, and one side surface of the end cover is abutted against the connecting column and the connecting ring; the connecting column is characterized in that at least one bolt hole is formed in the end face of the connecting column, an end cover through hole corresponding to the bolt hole is formed in the end cover, and a connecting bolt in threaded fit with the bolt hole is arranged on the end cover through hole.

Preferably, in the novel connecting structure of the shaft and the hub provided by the invention, the hole axis of the bolt hole is parallel to the axis of the connecting column; the bolt holes are arranged in two numbers, and the two bolt holes are symmetrically arranged by taking the axis of the connecting column as a symmetric center.

Preferably, in the novel connecting structure of the shaft and the hub provided by the invention, the outer edge range of the end cover is not larger than that of the mounting end.

Preferably, in the novel shaft and hub connecting structure provided by the invention, the connecting column, the connecting ring and the annular key have the same height; the outer side face of the connecting column is completely attached to the inner ring face of the annular key, and the outer side face of the annular key is completely attached to the inner ring face of the connecting ring.

Preferably, in the novel connecting structure of the shaft and the hub provided by the invention, the mounting groove is a triangular groove, a rectangular groove, an elliptical groove or a polygonal groove.

The invention has the following beneficial effects:

the invention provides a novel connecting structure of a shaft and a hub. The effort that transmits when the axle is rotatory transmits to annular key with the pressure form through the side of spliced pole with annular key contact on, annular key transmits the effort to the mounting groove with the pressure form through the side with the mounting groove contact on, transmits the effort to the hub and makes the hub rotate along with the axle by the mounting groove. In the structural design of the invention, the annular key is a component applied to the end faces of the shaft and the hub for transmitting force, can be used independently, and can also be used together with a common flat key, thereby providing more flexibility for mechanical design work. Moreover, the annular key is very simple to machine and assemble, and is preferably a standard circular ring structure, and the manufacturing precision of the annular key is easily guaranteed. The torque transmission method between the shaft and the hub designed by the invention can be used in a torque transmission mode of a common key or can be used independently. The invention can provide a brand new design idea of connection between the shaft and the hub for mechanical designers, and is a beneficial supplement to the traditional mechanical design method.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:

FIG. 1 is an exploded view of the novel shaft to hub connection of the present invention;

description of reference numerals:

the shaft comprises a shaft 1, a hub 2, a connecting column 3, a connecting ring 4, an annular key 5, an end cover 6 and a connecting bolt 7.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

Referring to fig. 1, fig. 1 is an exploded view of a novel connection structure of a shaft and a hub according to the present invention.

The invention provides a novel connecting structure of a shaft and a hub, which is suitable for connecting the shaft 1 and the hub 2 or connecting the shaft 1 and a sleeve.

In the invention, the novel connecting structure of the shaft and the hub comprises a shaft 1 and a hub 2, wherein the hub 2 is arranged at the shaft end of the shaft 1, one end of the shaft 1 for installing the hub 2 is an installing end, and one end of the hub 2 on the same side with the installing end is a connecting end. The shaft 1 is a circular shaft with a circular cross section, and the hub 2 is a part which is mounted on the shaft 1 and needs to rotate together with the shaft 1, but of course, the hub 2 may be replaced by a sleeve structure which needs to rotate together with the shaft 1, or another structural part which is sleeved on the shaft 1 and needs to rotate together with the shaft 1, such as a swing arm arranged on the shaft 1.

In the prior art, a shaft and a hub are connected by adopting a key, and if the shaft and the hub are connected by adopting a spline, the connecting structure is complicated, so that the manufacturing difficulty of the shaft and the hub is increased.

In order to solve the problems, the novel connecting structure of the shaft and the hub provided by the invention provides the following structural designs for the shaft 1 and the hub 2: be provided with spliced pole 3 on the terminal surface of erection site (axle 1 is used for installing the one end of hub 2), after the erection site of link (hub 2 installation axle 1, the one end that flushes with the erection site on the hub 2 is the link), be provided with go-between 4 on the terminal surface of hub 2 installation axle 1, after hub 2 installation axle 1, go-between 4 is located the outside of spliced pole 3, spliced pole 3 sets up in the intra-ring of go-between 4 (annular structure) promptly, go-between 4 and spliced pole 3 have the clearance and form the mounting groove, foretell clearance means to have the clearance between the interior anchor ring of go-between 4 and the lateral surface of spliced pole 3. Specifically, the gap is formed as follows: the outer diameter of the connecting column 3 is smaller than that of the mounting end, and the inner diameter of the connecting ring 4 is larger than that of the connecting end. The groove bottom of the mounting groove faces to the same direction as the axial direction and is a plane, namely the end face of the mounting end is coplanar with the end face of the connecting end.

An annular key 5 is arranged in the mounting groove, and the annular key 5 is an independent component for transmitting force. When the shaft 1 rotates, the acting force needs to be transmitted to the hub 2 so that the hub 2 can rotate along with the shaft 1, then the acting force needed to be transmitted by the shaft 1 can be transmitted to the annular key 5 in a pressure mode through the contact of the connecting column 3 and the annular key 5, then the annular key 5 transmits the acting force to the mounting groove in a pressure mode through the contact of the annular key 5 and the mounting groove, and finally the acting force is transmitted to the hub 2 through the mounting groove and the hub 2 rotates along with the shaft 1.

The core improved concept of the invention is as follows: the ends of the shaft 1 and the hub 2 (sleeve or other structure) are modified by providing an annular key 5 to allow the transmission of forces between the ends of the shaft 1 and the hub 2. The structure capable of achieving the above object is specifically as follows: