CN113464626B

CN113464626B - Right-angle transmission device based on eccentric shaft

Info

Publication number: CN113464626B
Application number: CN202110820645.XA
Authority: CN
Inventors: 许立忠; 王婷婷
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-07-19
Anticipated expiration: 2041-07-20
Also published as: CN113464626A

Abstract

The invention relates to a right-angle transmission device based on an eccentric shaft, which comprises a shell, an input eccentric mechanism, an output eccentric mechanism and a tee joint, wherein the shell is provided with a first eccentric shaft and a second eccentric shaft; an elastic adjusting washer and a first end cover are arranged in the middle of the outer side of the front cover of the shell, the input eccentric shaft is placed in a pair of bearings in the front cover and the end covers and is axially limited through a sleeve and an elastic check ring; the output eccentric shaft is arranged in the other pair of bearings in the two side covers; the eccentric shaft section of the input and output eccentric shaft is respectively provided with a pair of bearings, the two pairs of bearings are axially limited by a sleeve and an elastic retainer ring, the two pairs of bearings on the input and output eccentric shaft are sleeved in a tee joint, the pair of bearings on the input eccentric shaft are sleeved in a main pipe, the pair of bearings on the output eccentric shaft are sleeved in a branch pipe, and the two pairs of bearings and the tee joint are in clearance fit. The invention does not need to use bevel gears to transmit motion and power between vertical intersecting shafts, avoids failure of a transmission system caused by gear tooth breakage, and has simple structure and processing, low processing precision requirement and high use cost performance.

Description

Right-angle transmission device based on eccentric shaft

Technical Field

The invention relates to the technical field of transmission devices, in particular to a right-angle transmission device based on an eccentric shaft.

Background

Bevel gear transmissions have been used in automotive, aerospace, petroleum, chemical and other fields to effect the transfer of motion and power between intersecting shafts. However, the bevel gear transmission is prone to snap-off after short-time overload, impact load or gear wear and thinning. The gear teeth are broken, so that the transmission of the bevel gear is completely failed, the manufacturing process of the bevel gear is complex during machining and manufacturing, the requirements on machine tool cutters and detection instruments for machining are high, and the cost is high.

Disclosure of Invention

In view of the above problems, the present invention provides a right angle transmission device based on an eccentric shaft, which has the advantages of safe and reliable operation, simple structure and processing procedure, low requirement for processing precision, and low production cost.

The technical scheme adopted by the invention is as follows:

the invention provides a right-angle transmission device based on an eccentric shaft, which comprises a shell, an input eccentric mechanism, an output eccentric mechanism and a tee joint, wherein the shell is provided with a first eccentric shaft and a second eccentric shaft;

the shell is enclosed by an upper cover, a lower cover, a front cover, a rear cover and two side covers; the middle part of the outer side of the front cover is fixedly connected with a first end cover, and an elastic adjusting gasket is arranged between the first end cover and the front cover; the middle parts of the outer sides of the two side covers are respectively and fixedly connected with a second end cover;

the input eccentric mechanism comprises an input eccentric shaft, a first bearing, a first sleeve, a first elastic retainer ring, a second bearing and a second sleeve; one end of the input eccentric shaft is eccentric, the eccentric end of the input eccentric shaft is positioned in the shell, the front end of the input eccentric shaft vertically penetrates through the front cover and the first end cover, the input eccentric shaft is connected with the front cover and the first end cover through a pair of first bearings, and the first bearings are axially limited through a first sleeve and a first elastic check ring;

the output eccentric mechanism comprises an output eccentric shaft, a third bearing, a third sleeve, a first elastic retainer ring, a second elastic retainer ring and a fourth bearing; the middle of the output eccentric shaft is eccentric and is vertical to the input eccentric shaft, the eccentric end of the output eccentric shaft is positioned in the shell, the front side and the rear side of the output eccentric shaft are respectively connected with the two side covers through third bearings, and the third bearings are respectively axially limited through the second end cover and the second retainer ring;

a pair of second bearings is arranged on the eccentric shaft section of the input eccentric shaft, a pair of fourth bearings is arranged on the eccentric shaft section of the output eccentric shaft, and the pair of second bearings is axially limited through a second sleeve and a first elastic check ring; the pair of fourth bearings is axially limited by the third sleeve and the first elastic check ring; the outer rings of the second bearing and the fourth bearing are all sleeved in the tee joint, wherein the pair of second bearings are sleeved in a main pipe of the tee joint, the pair of fourth bearings are respectively sleeved in two branch pipes of the tee joint, and the second bearing and the fourth bearing are in clearance fit with the tee joint.

Further, the eccentricity of the input eccentric shaft and the eccentricity of the output eccentric shaft are equal.

Compared with the prior art, the invention has the following beneficial effects:

1. the transmission device does not use bevel gears to transmit motion and power between vertical intersecting shafts, can avoid potential safety hazards caused by broken gear teeth in the working process, and is safer and more reliable in work;

2. the transmission device is only composed of five simple parts, namely an eccentric shaft, an end cover, a tee joint, a cover and a sleeve, which form a shell, and has simple structure and processing process and lower processing precision requirement, thereby reducing the production cost and improving the cost performance of the transmission device in practical application.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 in the direction A-A;

fig. 4 is a schematic diagram of a half-section top structure of the present invention.

Wherein, the reference numbers: 1-a tee joint; 2, covering the cover; 3-lower cover; 4-front cover; 5-rear cover; 6-side cover; 7-a first end cap; 8-an elastic adjustment washer; 9-a set screw; 10-a set screw; 11-a second end cap; 12-input eccentric shaft; 13-a first bearing; 14-a first sleeve; 15-a first circlip; 16-a second bearing; 17-a second sleeve; 18-an output eccentric shaft; 19-a third bearing; 20-a third sleeve; 21-a second circlip; 22-fourth bearing.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not mean that a device or an element must have a specific orientation, be configured and operated in a specific orientation.

Referring to fig. 1 to 4, a specific structure of an embodiment of a right-angle transmission device based on an eccentric shaft according to the present invention is shown. The device comprises a shell, an input eccentric mechanism, an output eccentric mechanism and a tee joint 1;

in the embodiment, the housing is enclosed by an upper cover 2 with rectangular bosses, a lower cover 3, a front cover 4, a rear cover 5 and two side covers 6 with rectangular grooves, the bosses and the grooves are used for limiting the relative positions of six covers, the grooves on one sides of the two side covers 6 are sleeved on the boss edges of the lower cover 3 and are fixed on the lower cover 3 through screws, the bosses of the rear cover 5 and the front cover 4 are respectively placed in the two grooves enclosed by the lower cover 3 and the two side covers 6 and are fixed on the two side covers 6 through screws, the bosses of the upper cover 2 are placed in the grooves enclosed by the rear cover 5, the front cover 4 and the two side covers 6 and are fixed on the two side covers 6 through screws; a circular boss is arranged in the middle of the outer side of the front cover 4, a first end cover 7 is fixedly connected to the outer side of the circular boss, an elastic adjusting gasket 8 is arranged between the first end cover 7 and the front cover 4, and the first end cover 7 and the elastic adjusting gasket 8 are fixedly connected with the front cover 4 through a fixing screw 10; the outer middle rear parts of the two side covers 6 are fixedly connected with second end covers 11 through fixing screws 9 respectively.

The input eccentric mechanism comprises an input eccentric shaft 12, a first bearing 13, a first sleeve 14, a first elastic retainer ring 15, a second bearing 16 and a second sleeve 17; the input eccentric shaft 12 has one eccentric end inside the casing and its front end penetrating the front cover 4 and the first end cover 7 vertically, the input eccentric shaft 12 is connected to the front cover 4 and the first end cover 7 via a pair of first bearings 13, and the first bearings 13 are axially limited via a first sleeve and a first elastic retainer ring 15 arranged on the input eccentric shaft 12.

The output eccentric mechanism comprises an output eccentric shaft 18, a third bearing 19, a third sleeve 20, a first elastic check ring 15, a second elastic check ring 21 and a fourth bearing 22; the middle of the output eccentric shaft 18 is eccentric, the eccentric distance of the output eccentric shaft is equal to that of the input eccentric shaft, the output eccentric shaft is perpendicular to the input eccentric shaft 12, the eccentric end of the output eccentric shaft is positioned in the shell, the front side and the rear side of the output eccentric shaft are respectively connected with the two side covers 6 through third bearings 19, and the third bearings 19 are respectively axially limited through a second end cover 11 and a second elastic retainer ring 21 arranged on the output eccentric shaft 18;

a pair of second bearings 16 is arranged on the eccentric shaft section of the input eccentric shaft 12, a pair of fourth bearings 22 is arranged on the eccentric shaft section of the output eccentric shaft 18, and the pair of second bearings 16 is axially limited by a second sleeve 17 and a first elastic check ring 15 which are arranged on the eccentric shaft section of the input eccentric shaft 12; the pair of fourth bearings 22 is axially limited by a third sleeve 20 and a first elastic retainer ring 15 which are arranged on the eccentric shaft section of the output eccentric shaft 18; the outer lane of second bearing 16 and fourth bearing 22 all is overlapped in tee bend 1, wherein, a pair of second bearing 16 is overlapped in tee bend 1's the person in charge, a pair of fourth bearing 22 is overlapped respectively in tee bend 1's two minutes intraductally, just second bearing 16 and fourth bearing 22 all adopt clearance fit with tee bend 1.

The working process of the invention is as follows: when the input eccentric shaft 12 and the output eccentric shaft 18 rotate in the same direction, as shown in fig. 4, the starting position relationship between the input eccentric shaft 12 and the output eccentric shaft 18 is as follows: the eccentric axis of the output eccentric shaft 18 is located on the left side of the reference axis when the eccentric axis of the input eccentric shaft 12 is located above the reference axis, or the eccentric axis of the output eccentric shaft 18 is located on the right side of the reference axis when the eccentric axis of the input eccentric shaft 12 is located below the reference axis. When the input eccentric shaft 12 and the output eccentric shaft 18 rotate reversely, the initial position relation of the input eccentric shaft 12 and the output eccentric shaft 18 is as follows: the eccentric axis of the output eccentric shaft 18 is located on the right side of the reference axis when the eccentric axis of the input eccentric shaft 12 is located above the reference axis, or the eccentric axis of the output eccentric shaft 18 is located on the left side of the reference axis when the eccentric axis of the input eccentric shaft 12 is located below the reference axis. When the input eccentric shaft 12 rotates continuously, the tee 1 is limited as a long axis by the input eccentric shaft 12, the output eccentric shaft 18, the second bearing 16 and the fourth bearing 22

The short axis is 2(R + e) elliptical motion, and then drives the output eccentric shaft 18 to rotate, when the eccentric axis of the input eccentric shaft 12 and the eccentric axis of the output eccentric shaft 18 are simultaneously vertically inward or outward, i.e. the tee joint 1 moves to the short axis end point of the elliptical trajectory, the output eccentric shaft 18 can continuously rotate by means of the inertia effect of the eccentric shafts.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A right angle drive based on eccentric shaft which characterized in that: the device comprises a shell, an input eccentric mechanism, an output eccentric mechanism and a tee joint;

the shell is enclosed by an upper cover, a lower cover, a front cover, a rear cover and two side covers; the middle part of the outer side of the front cover is fixedly connected with a first end cover, and an elastic adjusting gasket is arranged between the first end cover and the front cover; the middle parts of the outer sides of the two side covers are fixedly connected with second end covers respectively;

a pair of second bearings is arranged on the eccentric shaft section of the input eccentric shaft, a pair of fourth bearings is arranged on the eccentric shaft section of the output eccentric shaft, and the pair of second bearings is axially limited through a second sleeve and a first elastic check ring; the pair of fourth bearings is axially limited through a third sleeve and a first elastic retainer ring; the outer rings of the second bearing and the fourth bearing are all sleeved in the tee joint, wherein the pair of second bearings are sleeved in a main pipe of the tee joint, the pair of fourth bearings are respectively sleeved in two branch pipes of the tee joint, and the second bearing and the fourth bearing are in clearance fit with the tee joint.

2. The right angle drive based on an eccentric shaft of claim 1, wherein: the eccentric distances of the input eccentric shaft and the output eccentric shaft are equal.