CN210128023U

CN210128023U - Wheel and shaft connecting structure

Info

Publication number: CN210128023U
Application number: CN201920217945.7U
Authority: CN
Inventors: 李增朝; 王萌
Original assignee: Handan College
Current assignee: Handan College
Priority date: 2019-02-14
Filing date: 2019-02-14
Publication date: 2020-03-06
Anticipated expiration: 2029-02-14

Abstract

The utility model relates to a wheel and axle connection structure. The wheel comprises a wheel and a shaft, wherein a shaft hole is formed in the center of the wheel, the wheel is in clearance fit with the shaft through the shaft hole, a shaft shoulder is arranged on the shaft and is used for positioning the wheel, an expansion ring groove coaxial with the shaft hole is formed in the shaft hole of the non-positioning end of the wheel, and expansion devices are uniformly distributed in the expansion ring groove. Its simple structure, firm in connection dismantles fast, and reuse many times, the dismouting is to the equal not damaged of wheel and axle, also not damaged to wheel and axle in the use.

Description

Wheel and shaft connecting structure

Technical Field

The utility model relates to a connection structure, in particular to connection structure of wheel and axle.

Background

At present, the traditional wheel and shaft are connected by using a key, key grooves are machined on the wheel and the shaft, the wheel and the shaft are connected together by installing the key, and the rotation of the wheel and the shaft is completed.

Disclosure of Invention

In order to overcome the shortcoming of the prior art, the utility model provides a wheel and axle connection structure. Its simple structure, firm in connection dismantles fast, and reuse many times, the dismouting is to the equal not damaged of wheel and axle, also not damaged to wheel and axle in the use.

The utility model provides a technical scheme that its technical problem adopted is: the wheel comprises a wheel and a shaft, wherein a shaft hole is formed in the center of the wheel, the wheel is in clearance fit with the shaft through the shaft hole, a shaft shoulder is arranged on the shaft and is used for positioning the wheel, an expansion ring groove coaxial with the shaft hole is formed in the shaft hole of the non-positioning end of the wheel, and expansion devices are uniformly distributed in the expansion ring groove.

The utility model discloses simple structure, firm in connection dismantles fast, and reuse many times, the dismouting is to the equal not damaged of wheel and axle, and the wheel is also not damaged with the axle in the use.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a front view of the present invention;

FIG. 2 is a right side view of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

FIG. 4 is a front view of the expander of the present invention;

fig. 5 is a right side view of the expander of the present invention.

Detailed Description

As shown in fig. 1-3, the utility model discloses a wheel 1 and axle 2, there is the shaft hole at the center of wheel 1, and wheel 1 passes through shaft hole and axle 2 clearance fit, has a shaft shoulder 3 on the axle 2, and shaft shoulder 3 is wheel 1 location, has the tight annular 5 of bloating coaxial with wheel 1 shaft hole in the shaft hole department of wheel 1 non-location end, and the equipartition bloated ware 4 in the tight annular 5 of bloating.

As shown in fig. 4 and 5, the expander 4 comprises an inner cone column 4-1, an outer cone column 4-4, an upper expander 4-2, a lower expander 4-3 and a bolt 4-5, wherein the upper expander 4-2 and the lower expander 4-3 are structurally symmetrical, the inner surface of the upper expander 4-2 is a double-conical surface with a large radius at the left end and a small radius at the middle part, an inner cone column 4-1 and an outer cone column 4-4 which are matched with the double-conical surfaces of the upper expander 4-2 and the lower expander 4-3 are respectively embedded in the upper expander 4-2 and the lower expander 4-3, the conicity of the outer surfaces of the inner cone column 4-1 and the outer cone column 4-4 is the same as that of the double-conical surfaces of the upper expander 4-2 and the lower expander 4-3, the inner cone column 4-1 and the outer cone column 4-4 are respectively provided with a shaft hole, and the shaft hole of the inner cone column 4-1 is provided with an internal thread matched with the bolt 4-5, the shaft hole of the outer conical column 4-4 is in clearance fit with the bolt 4-5, and the bolt 4-5 penetrates through the outer conical column 4-4 to be screwed and fixed with the inner conical column 4-1. The bolt 4-5 is rotated clockwise, so that the upper expanding ring 4-2 and the lower expanding ring 4-3 can be pushed outwards, and the wheel 1 and the shaft 2 are expanded. The bolt 4-5 is rotated against the needle, so that the upper expanding ring 4-2 and the lower expanding ring 4-3 can be retracted inwards, and the wheel 1 and the shaft 2 are loosened.

The radius of the outer cylindrical surface of the upper expansion ring 4-2 and the lower expansion ring 4-3 is the same as that of the expansion ring groove 5.

Claims

1. A wheel and shaft connection structure, its characterized in that: the wheel comprises a wheel (1) and a shaft (2), wherein a shaft hole is formed in the center of the wheel (1), the wheel (1) is in clearance fit with the shaft (2) through the shaft hole, a shaft shoulder (3) is arranged on the shaft (2), the shaft shoulder (3) is positioned for the wheel (1), an expansion ring groove (5) coaxial with the shaft hole of the wheel (1) is formed in the shaft hole of the non-positioning end of the wheel (1), and expansion devices (4) are uniformly distributed in the expansion ring groove (5).

2. The wheel-and-axle connection according to claim 1, wherein: the tensioner (4) comprises an inner cone column (4-1), an outer cone column (4-4), an upper expanding ring (4-2), a lower expanding ring (4-3) and a bolt (4-5), the upper expanding ring (4-2) and the lower expanding ring (4-3) are structurally symmetrical, the inner surface of the upper expanding ring (4-2) is a double-cone surface with large radius at the left end and the right end and small radius at the middle part, the inner cone column (4-1) and the outer cone column (4-4) which are matched with the double-cone surfaces of the upper expanding ring (4-2) and the lower expanding ring (4-3) are respectively embedded in the upper expanding ring (4-2) and the lower expanding ring (4-3), the conicity of the outer surfaces of the inner cone column (4-1) and the outer cone column (4-4) is the same as the double-cone surface of the upper expanding ring (4-2) and the lower expanding ring (4-3), and shaft holes are respectively arranged on the inner cone column (4-1) and the outer cone column (4-4), the shaft hole of the inner conical column (4-1) is provided with an internal thread matched with the bolt (4-5), the shaft hole of the outer conical column (4-4) is in clearance fit with the bolt (4-5), and the bolt (4-5) penetrates through the outer conical column (4-4) to be screwed and fixed with the inner conical column (4-1).

3. The wheel-and-axle connection according to claim 2, wherein: the radiuses of the outer cylindrical surfaces of the upper expanding ring (4-2) and the lower expanding ring (4-3) are the same as the radiuses of the expansion ring grooves (5).