Transition gear

Abstract

The utility model relates to a transition gear which comprises a body, a shaft hole is formed in the middle of the body in the axial direction in a penetrating mode, a first tooth and a second tooth which are of an annular structure are arranged at different axial positions of the peripheral wall of the body respectively, and the outer diameters of the first tooth and the second tooth are different. A semi-ring part is axially and forwards arranged on the end surface of the body; a limiting groove is formed in the position, in the radial direction of the semi-ring part, of the circle center of the semi-ring part, the diameter of the limiting groove is larger than the inner diameter of the semi-ring part, and the diameter of the limiting groove is smaller than the outer diameter of the semi-ring part; a rotating shaft penetrates through a shaft hole in the middle of the body, first teeth or second teeth on the outer wall of the body are matched with input power, and output power is matched with the remaining second teeth or first teeth. Or the rotating shaft serves as main power, and rotating force is output through the first tooth and the second tooth; the semi-ring part of the end face of the body provides a space for the limiting groove, and the circle center of the semi-ring part and the circle center of the limiting groove are concentric. And the limiting groove is matched with the limiting ring, so that the rotating shaft and the body are quickly and axially positioned.

Description

Technical Field

[0001] The utility model relates to the field of gears, in particular to a transition gear. Background Art

[0002] When the input power and output power are in parallel directions, a transition gear is needed to connect the input power and output power to achieve smooth power transmission;

[0003] In the transition gear, the shaft hole in the middle of the body is used for the rotating shaft to pass through, and the mounting shaft is used to support the transition gear. Axial limitation is required between the transition gear and the mounting shaft. Conventionally, a limiting part is set on the rotating shaft, and the limiting part is against the head and tail of the transition gear for limiting. However, the above method is more troublesome to install, time-consuming and labor-intensive.

[0004] In summary, how to achieve rapid axial positioning of the transition gear and the rotating shaft has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to realize the rapid axial positioning of the transition gear and the rotating shaft;

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The utility model is a transition gear, comprising: a body, wherein an axial hole is formed in the middle portion thereof along the axial direction, and a first tooth and a second tooth of an annular structure are respectively provided at different axial positions of the outer peripheral wall thereof, wherein the outer diameters of the first tooth and the second tooth are inconsistent; a semi-annular portion is provided axially forward on the end surface of the body; a limiting groove is formed at the center of the semi-annular portion radially from the semi-annular portion, wherein the diameter of the limiting groove is larger than the inner diameter of the semi-annular portion, and the diameter of the limiting groove is smaller than the outer diameter of the semi-annular portion;

[0008] In this solution, the shaft hole in the middle of the body is used for the rotation shaft to pass through, the first tooth or the second tooth on the outer wall of the body cooperates with the input power, and the output power cooperates with the remaining second tooth or the first tooth; or the rotation shaft serves as the main power, and the rotational force is output through the first tooth and the second tooth;

[0009] The semi-circular portion of the end surface of the body provides space for the limiting groove, and the center of the semi-circular portion is concentric with the center of the limiting groove; during the installation of the rotating shaft, the rotating shaft can be set as an integrated structure or a split structure;

[0010] An installation groove is provided on the outer peripheral wall of the end portion of the integrally structured rotating shaft. When the installation groove and the limiting groove of the rotating shaft are in the same axial position, the limiting ring of the U-shaped structure is installed in the upper half of the installation groove. At this time, the limiting ring does not match the limiting groove. The limiting ring is bent into an O-shaped structure by deformation, and the lower half of the limiting ring matches the limiting groove, thereby realizing rapid axial positioning of the rotating shaft and the body.

[0011] The rotating shaft of the split structure has a first section and a second section. The first section passes through the shaft hole and the end is located at the limit groove. At this time, the limit ring of the O-shaped structure is placed in the limit groove, and the lower half of the limit ring is matched with the limit groove. Then the first section and the second section are connected, and a space for accommodating the limit ring is formed between the first section and the second section, thereby realizing rapid axial positioning of the rotating shaft and the body.

[0012] In order to further limit the positioning of the rotating shaft and the limiting groove straight line, the utility model adopts the shaft hole as a tapered hole;

[0013] Because the outer peripheral wall of the rotating shaft is also a conical surface, when the outer peripheral wall of the rotating shaft and the inner wall of the shaft hole are fitted together, the mounting groove and the limiting groove on the rotating shaft are at the same axial position.

[0014] In order to illustrate the specific structure of the semicircular portion, the utility model adopts that the outer diameter of the semicircular portion matches the outer diameter of the body, and the inner diameter of the semicircular portion matches the minimum inner diameter of the shaft hole;

[0015] In order to realize the synchronous rotation of the body and the rotating shaft, the utility model adopts a spline groove provided on the inner wall of the shaft hole;

[0016] The splines on the shaft are matched with the spline grooves to achieve synchronous rotation of the body and the shaft.

[0017] The beneficial effects of the utility model are as follows: the utility model is a transition gear, the shaft hole in the middle of the main body is for the rotating shaft to pass through, the first tooth or the second tooth on the outer wall of the main body cooperates with the input power, and the output power cooperates with the remaining second tooth or the first tooth; or the rotating shaft serves as the main power, and the rotating force is output through the first tooth and the second tooth; the semi-annular portion on the end face of the main body provides space for the limiting groove, and the center of the semi-annular portion is concentric with the center of the limiting groove; the matching of the limiting groove and the limiting ring realizes the rapid axial positioning of the rotating shaft and the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 It is a left view of the utility model;

[0021] Figure 3 It is a right side view of the utility model;

[0022] Figure 4 It is a top cross-sectional view of the utility model;

[0023] In the figure: 1-body, 2-shaft hole, 3-first tooth, 4-second tooth, 5-semi-ring portion, 6-limiting groove, 7-spline groove. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0025] like Figure 1-4 As shown, the utility model is a transition gear, comprising: a body 1, wherein an axial hole 2 is formed in the middle thereof along the axial direction, and first teeth 3 and second teeth 4 of annular structures are respectively provided at different axial positions on the outer peripheral wall thereof, and the outer diameters of the first teeth 3 and the second teeth 4 are inconsistent; a semi-annular portion 5 is provided axially forward on the end face of the body 1; a limiting groove 6 is formed at the center of the semi-annular portion 5 radially toward the semi-annular portion 5, and the diameter of the limiting groove 6 is larger than the inner diameter of the semi-annular portion 5, and the diameter of the limiting groove 6 is smaller than the outer diameter of the semi-annular portion 5;

[0026] In this embodiment, the shaft hole 2 in the middle of the body 1 is used for the rotation shaft to pass through, the first teeth 3 or the second teeth 4 on the outer wall of the body 1 cooperate with the input power, and the output power cooperates with the remaining second teeth 4 or the first teeth 3; or the rotation shaft serves as the main power, and the rotational force is output through the first teeth 3 and the second teeth 4;

[0027] The semi-circular portion 5 on the end surface of the body 1 provides space for the limiting groove 6, and the center of the semi-circular portion 5 is concentric with the center of the limiting groove 6. During the installation of the rotating shaft, the rotating shaft can be set as an integrated structure or a split structure;

[0028] An installation groove is provided on the outer peripheral wall of the end portion of the integral structure of the rotating shaft. When the installation groove and the limiting groove 6 of the rotating shaft are in the same axial position, the limiting ring of the U-shaped structure is installed in the upper half of the installation groove. At this time, the limiting ring does not match the limiting groove 6. The limiting ring 6 is bent into an O-shaped structure by deformation, and the lower half of the limiting ring matches the limiting groove 6, thereby realizing rapid axial positioning of the rotating shaft and the body 1.

[0029] The rotating shaft of the split structure has a first section and a second section. The first section passes through the shaft hole 2 and the end is located at the limiting groove 6. At this time, the limiting ring of the O-type structure is placed in the limiting groove 6, and the lower half of the limiting ring is matched with the limiting groove 6. Then the first section and the second section are connected, and a space for accommodating the limiting ring is formed between the first section and the second section, thereby realizing rapid axial positioning of the rotating shaft and the body 1.

[0030] like Figure 1-4 As shown, in order to further limit the positioning of the rotating shaft and the limiting groove straight line, the utility model adopts the shaft hole 2 as a tapered hole;

[0031] Because the outer peripheral wall of the rotating shaft is also a conical surface, when the outer peripheral wall of the rotating shaft is fitted with the inner wall of the shaft hole 2, the mounting groove and the limiting groove 6 on the rotating shaft 2 are at the same axial position.

[0032] like Figure 1-4 As shown, in order to illustrate the specific structure of the semicircular portion, the utility model adopts that the outer diameter of the semicircular portion 5 matches the outer diameter of the body 1, and the inner diameter of the semicircular portion 5 matches the minimum inner diameter of the shaft hole 2;

[0033] like Figure 1-4 As shown, in order to realize the synchronous rotation of the body and the rotating shaft, the utility model adopts a spline groove 7 provided on the inner wall of the shaft hole 2;

[0034] The splines on the shaft are matched with the spline grooves to achieve synchronous rotation of the body and the shaft.

[0035] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A transition gear, characterized in that: include: The main body has an axial hole extending through the middle thereof in the axial direction, and a first tooth and a second tooth of an annular structure are respectively provided at different axial positions of the outer peripheral wall thereof, and the outer diameters of the first tooth and the second tooth are different; The end surface of the body is provided with a semi-annular portion axially forward; A limiting groove is provided at the center of the semi-annular portion radially from the semi-annular portion, wherein the diameter of the limiting groove is larger than the inner diameter of the semi-annular portion and smaller than the outer diameter of the semi-annular portion.

2. A transition gear according to claim 1, characterized in that: The shaft hole is a tapered hole.

3. A transition gear according to claim 2, characterized in that: The outer diameter of the semi-annular portion matches the outer diameter of the body, and the inner diameter of the semi-annular portion matches the minimum inner diameter of the axial hole.

4. A transition gear according to claim 3, characterized in that: A spline groove is provided on the inner wall of the shaft hole.

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