CN211059327U

CN211059327U - Back holds in palm eccentric wheel

Info

Publication number: CN211059327U
Application number: CN201921623028.5U
Authority: CN
Inventors: 戴仁亨; 戴建光; 戴辰捷
Original assignee: Wenzhou Tianwei Machinery Co ltd
Current assignee: Wenzhou Tianwei Machinery Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-07-21
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a back holds in palm eccentric wheel, its technical scheme main points are including, a back holds in palm eccentric wheel, including transmission shaft, wheel body, the geometric center of wheel body one side is provided with an axle and perforates, is provided with two recesses on the axle perforation, is 0-90 between two recesses, and the transmission shaft comprises first transmission portion, first location portion, second transmission portion, and four person's integrated into one piece are provided with two keyways on the second location portion, are 0-90 between two keyways, and the keyway is used for the mounting key. The angles between the two grooves and the two key grooves are equal, and the two grooves are matched with the two keys arranged on the two key grooves. The second positioning part is provided with a first positioning hole, and one side of the shaft through hole on the wheel body is provided with a second positioning hole. The first positioning hole is matched with the second positioning hole. There is certain radian in first location portion and the first transmission portion, the second location portion department of connecting. The utility model relates to a back holds in palm eccentric wheel intensity greatly, and wearing and tearing are few, are difficult to the fracture.

Description

Back holds in palm eccentric wheel

Technical Field

The utility model relates to a mechanical transmission technical field, concretely relates to back holds in palm eccentric wheel.

Background

In the prior art, a wheel body and a shaft body of an eccentric wheel are connected through a key groove and a groove. For example, chinese utility model patent with publication number CN203784079U discloses "a filament cutter compacting mechanism eccentric wheel and use its compaction device", has only set up a recess on the axle perforation of its eccentric wheel body for with the shaft body coupling, this kind of connected mode intensity is not enough, and wearing and tearing are big, easily cause the fracture, arouse the mechanical failure problem.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a back holds in palm eccentric wheel to it is not enough to solve joint strength, and wearing and tearing are big, easily causes the fracture, arouses mechanical failure scheduling problem.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a back support eccentric wheel comprises a transmission shaft and a wheel body;

furthermore, a shaft through hole is formed in the geometric center of one side of the wheel body, two grooves are formed in the shaft through hole, the angle between the two grooves is 0-90 degrees, the transmission shaft is composed of a first transmission portion, a first positioning portion, a second positioning portion and a second transmission portion, the first transmission portion, the second positioning portion and the second transmission portion are integrally formed, two key grooves are formed in the second positioning portion, the angle between the two key grooves is 0-90 degrees, and the key grooves are used for installing keys.

Further the axle perforation coincides with the centre of a circle of the second location portion.

Further the two grooves are equal to the two key grooves in angle, and the two grooves are matched with the two keys arranged on the two key grooves.

Further, a first positioning hole is formed in the second positioning portion.

Furthermore, a second positioning hole is formed in one side of the shaft through hole in the wheel body.

Further, the first positioning hole is matched with the second positioning hole.

Further there is certain radian in the department that first location portion links to each other with first transmission portion, second location portion.

The beneficial effects of the utility model are that, the utility model discloses a transmission shaft and eccentric wheel adopt two keyway connections, and the effectual intensity that adopts a keyway connection to lead to of having solved is not enough, the utility model discloses still set up the locating hole on the second location portion of transmission shaft and eccentric wheel, can squeeze into the staple on the locating hole, further strengthened joint strength for the transmission shaft is difficult for causing the fracture with the eccentric wheel, the utility model discloses still set up first location portion on the transmission shaft, first location portion has a radian with the junction of first transmission portion, second location portion, and when the eccentric wheel was connected on the transmission shaft, can reduce the frictional force of transmission shaft and eccentric wheel, wearing and tearing when reducing the transmission.

Drawings

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

FIG. 1 is a schematic view of a wheel body;

FIG. 2 is a schematic cross-sectional view of the wheel body;

FIG. 3 is a schematic view of a drive shaft;

FIG. 4 is a schematic view of the joint of the positioning parts;

fig. 5 is a schematic cross-sectional view of the second transmission part.

Reference numerals: 1. a first transmission unit; 2. a first positioning portion; 3. a second positioning portion; 4. a keyway; 5. A wheel body; 6. shaft perforation; 7. a second positioning hole; 8. a first positioning hole; 9. a groove; 10. and a second transmission part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

[ example 1 ]

Referring to fig. 1 to 5, a back supporting eccentric wheel comprises a transmission shaft and a wheel body 5. The geometric center of wheel body 5 one side is provided with a through-hole 6, and through-hole 6 is used for passing the transmission shaft, is provided with two recesses 9 on through-hole 6, is 90 between two recesses 9, and the transmission shaft comprises first transmission portion 1, first location portion 2, second location portion 3, second transmission portion 10, and four integrated into one piece are provided with two keyway 4 on the second location portion 3, are 90 between two keyway 4, and keyway 4 is used for the mounting key. The two grooves 9 are at the same angle to the two keyways 4, and the two grooves 9 are matched with two keys arranged on the two keyways 4. The connecting strength of the wheel body 5 and the transmission shaft is enhanced. The center of the shaft through hole 6 coincides with the center of the second positioning portion 3, and the transmission shaft can pass through the shaft through hole 6. The second positioning portion 3 is provided with a first positioning hole 8. One side of the shaft through hole 6 on the wheel body 5 is provided with a second positioning hole 7, the first positioning hole 8 is matched with the second positioning hole 7, and fixing nails are driven into the first positioning hole 8 and the second positioning hole 7, so that the transmission shaft itself, the wheel body 5 and the transmission shaft can be further fixed. The connecting part of the first positioning part 2, the first transmission part 1 and the second positioning part 3 has a certain radian, and when the eccentric wheel is connected to the transmission shaft, the friction force between the transmission shaft and the eccentric wheel can be reduced, and the abrasion during transmission is reduced.

[ example 2 ]

Two grooves 9 are formed in the shaft through hole 6, 60 degrees can be formed between the grooves 9, two key grooves 4 are formed in the second positioning portion 3, 60 degrees are formed between the two key grooves 4, and the key grooves 4 are used for installing keys. The two grooves 9 are at the same angle to the two keyways 4, and the two grooves 9 are matched with two keys arranged on the two keyways 4. The connecting strength of the wheel body 5 and the transmission shaft is enhanced.

[ example 3 ]

Two grooves 9 are formed in the shaft through hole 6, 30 degrees can be formed between the grooves 9, two key grooves 4 are formed in the second positioning portion 3, 30 degrees are formed between the two key grooves 4, and the key grooves 4 are used for installing keys. The two grooves 9 are at the same angle to the two keyways 4, and the two grooves 9 are matched with two keys arranged on the two keyways 4. The connecting strength of the wheel body and the transmission shaft is enhanced.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a back holds in palm eccentric wheel, includes transmission shaft, wheel body (5), its characterized in that: the transmission shaft is characterized in that a shaft through hole (6) is formed in the geometric center of one side of the wheel body (5), two grooves (9) are formed in the shaft through hole (6), the angle between the two grooves (9) ranges from 0 degrees to 90 degrees, the transmission shaft is composed of a first transmission part (1), a first positioning part (2), a second positioning part (3) and a second transmission part (10), the four parts are integrally formed, two key grooves (4) are formed in the second positioning part (3), the angle between the two key grooves (4) ranges from 0 degrees to 90 degrees, and the key grooves (4) are used for installing keys.

2. The back rest eccentric wheel according to claim 1, wherein: the center of the shaft through hole (6) coincides with the center of the second positioning part (3).

3. The back rest eccentric wheel according to claim 1, wherein: the two grooves (9) are equal to the two key grooves (4) in angle, and the two grooves (9) are matched with the two keys arranged on the two key grooves (4).

4. The back rest eccentric wheel according to claim 1, wherein: the second positioning part (3) is provided with a first positioning hole (8).

5. The back rest eccentric wheel according to claim 1, wherein: one side of the shaft through hole (6) on the wheel body (5) is provided with a second positioning hole (7).

6. The back rest eccentric wheel according to claim 4, wherein: the first positioning hole (8) is matched with the second positioning hole (7).

7. The back rest eccentric wheel according to claim 1, wherein: and a certain radian exists at the joint of the first positioning part (2) and the first transmission part (1) and the second positioning part (3).