CN216232812U

CN216232812U - Multi-sprocket transmission structure

Info

Publication number: CN216232812U
Application number: CN202122857158.9U
Authority: CN
Inventors: 姚产
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-20
Filing date: 2021-11-20
Publication date: 2022-04-08
Anticipated expiration: 2031-11-20

Abstract

The utility model discloses a multi-chain wheel transmission structure, which comprises a driving chain wheel, a first chain wheel group, a second chain wheel group and a driven chain wheel, wherein the first chain wheel group comprises two first sub chain wheels which are fixedly connected through a connecting shaft and have the same tooth number and size; the driving chain wheel and the second chain wheel group are power input ends in the whole multi-chain-wheel transmission structure, and the tooth number of the driving chain wheel is the same as that of the second sub chain wheel, so that the bicycle can be better matched with two persons to ride; when using this double bicycle of many chain wheel transmission structure, two people of riding can be better be in same frequency of riding, and is more laborsaving, and drive sprocket's the number of teeth is greater than driven sprocket's the number of teeth moreover, and the speed of riding is also very fast.

Description

Multi-sprocket transmission structure

Technical Field

The utility model relates to the technical field of transmission structures, in particular to a multi-sprocket transmission structure.

Background

The chain wheel transmission structure is a common transmission structure and is also a necessary transmission structure in vehicles such as bicycles, tricycles, motorcycles and the like. The prior commonly used chain wheel transmission mechanisms comprise two kinds, one kind is a constant speed transmission mechanism, only two chain wheels are arranged in the transmission mechanism, and the transmission ratio between the two chain wheels is constant. Another is a variable speed drive mechanism having a drive sprocket and a plurality of adjustable driven sprockets, the drive ratio being adjusted by changing the driven sprockets engaged by the chain. In a tandem bicycle, a sprocket transmission structure needs to transmit power of two riders, and a more stable and labor-saving transmission structure is needed to better cooperate with the tandem bicycle.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a multi-chain wheel transmission structure, after the multi-chain wheel transmission structure is applied to a tandem bicycle, two people riding the tandem bicycle can be better in the same riding frequency, the power transmission is stable, the labor is saved, the riding speed is high, and the whole structure is stable.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a multi-chain wheel transmission structure comprises a driving chain wheel, a first chain wheel set, a second chain wheel set and a driven chain wheel, wherein the first chain wheel set comprises two first sub chain wheels which are fixedly connected through connecting shafts and have the same tooth number and size, the second chain wheel set comprises two second sub chain wheels which are fixedly connected through connecting shafts and have the same tooth number and size, the tooth number of the driving chain wheel is the same as that of the second sub chain wheels, the tooth number of the driving chain wheel is larger than that of the driven chain wheel, the tooth number of the first sub chain wheels is larger than that of the driving chain wheel, the driving chain wheel is connected with one first sub chain wheel through a chain, the other first sub chain wheel is connected with one second sub chain wheel through a chain, and the other second sub chain wheel is connected with the driven chain wheel through a chain.

Preferably, the driving sprocket and the second sub-sprocket are 32-tooth sprockets, the first sub-sprocket is a 64-tooth sprocket, and the driven sprocket is a 16-tooth sprocket.

Preferably, the first sub-chain wheel comprises an outer gear ring and a fixing component for connecting the outer gear ring and the connecting shaft, and the fixing component comprises a plurality of arc-shaped supporting pieces, fixing blocks and connecting strips, wherein the arc-shaped supporting pieces are arranged on the inner wall of the outer gear ring in an encircling mode at equal intervals, the fixing blocks are fixedly arranged on the connecting shaft, and the connecting strips are used for connecting the arc-shaped supporting pieces and the fixing blocks.

Preferably, the number of the connecting strips between each circular arc-shaped supporting piece and the fixing block is at least 2.

Preferably, a reinforcing strip is fixedly connected between the adjacent circular arc-shaped supporting pieces.

Preferably, the connecting shaft of the driving sprocket, the connecting shaft of the first sprocket group, the connecting shaft of the second sprocket group and the connecting shaft of the driven sprocket are coaxially provided with cylindrical fixed shafts, and annular fixed grooves are formed in the fixed shafts.

Preferably, the number of the fixing grooves on each fixing shaft is at least 2, and fixing holes penetrating through the fixing grooves are formed in the side faces of the fixing shafts.

The utility model has the beneficial effects that: the utility model discloses a multi-chain wheel transmission structure, which comprises a driving chain wheel, a first chain wheel group, a second chain wheel group and a driven chain wheel, wherein the first chain wheel group comprises two first sub chain wheels which are fixedly connected through a connecting shaft and have the same tooth number and size; the driving chain wheel and the second chain wheel group are power input ends in the whole multi-chain-wheel transmission structure, and the tooth number of the driving chain wheel is the same as that of the second sub chain wheel, so that the bicycle can be better matched with two persons to ride; when the double-person bicycle with the multi-chain wheel transmission structure is used, two people riding the bicycle can better stay at the same riding frequency, the labor is saved, the number of teeth of the driving chain wheel is greater than that of the driven chain wheel, and the riding speed is higher; in addition, a detachable connecting structure can be adopted between the connecting strip and the fixing block, so that the partial replacement of the first sub-chain wheel is facilitated, and the replacement cost can be saved.

Drawings

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

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a schematic structural view of the fixing shaft of the present invention.

Detailed Description

In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and embodiments.

A many chain wheel transmission structure as shown in fig. 1-3, including drive sprocket 1, first sprocket group 2, second sprocket group 3 and driven sprocket 4, first sprocket group 2 includes two numbers of teeth through connecting axle fixed connection and the same first sub-sprocket 21 of size, second sprocket group 3 includes two numbers of teeth through connecting axle fixed connection and the same second sub-sprocket 31 of size, the number of teeth of drive sprocket 1 is the same with the number of teeth of second sub-sprocket 31, the number of teeth of drive sprocket 1 is greater than the number of teeth of driven sprocket 4, the number of teeth of first sub-sprocket 21 is greater than the number of teeth of drive sprocket 1. The driving sprocket 1 is connected with one of the first sub-sprockets 21 through a chain, the other first sub-sprocket 21 is connected with one of the second sub-sprockets 31 through a chain, and the other second sub-sprocket 31 is connected with the driven sprocket 4 through a chain. The driving chain wheel 1 and the second chain wheel set 3 are power input ends in the whole multi-chain wheel transmission structure, and the tooth number of the driving chain wheel 1 is the same as that of the second sub chain wheel 31, so that the bicycle can be better matched for two people to ride. When using this double bicycle of many chain wheel transmission structure, two people of riding can be better be in same frequency of riding, and is more laborsaving, and drive sprocket 1's the number of teeth is greater than driven sprocket 4's the number of teeth moreover, and the speed of riding is also very fast. Preferably, the driving sprocket 1 and the second sub-sprocket 31 are 32-tooth sprockets, the first sub-sprocket 21 is a 64-tooth sprocket, and the driven sprocket 4 is a 16-tooth sprocket.

Preferably, the first sub-sprocket 21 includes an outer ring gear 22 and a fixing assembly 5 connecting the outer ring gear 22 and the connecting shaft, and the fixing assembly 5 includes a plurality of circular arc-shaped supporting members 51 arranged around the inner wall of the outer ring gear 22 at equal intervals, a fixing block 52 fixedly arranged on the connecting shaft, and a connecting strip 53 connecting the circular arc-shaped supporting members 51 and the fixing block 52. The number of the connecting strips 53 between each circular arc-shaped supporting piece 51 and the fixing block 52 is at least 2, so that the connecting structure between the circular arc-shaped supporting pieces 51 and the fixing block 52 is more stable. Adjacent fixedly connected with reinforcing strip 55 between the circular arc support piece 51, reinforcing strip 55 can improve the holistic atress ability of first sub-sprocket 21, effectively prevents to warp, increases life. And the first chain wheel set 2 is taken as an intermediate transmission structure and is easy to damage after long-time riding, so a detachable connecting structure can be adopted between the connecting strip 53 and the fixed block 52, partial replacement of the first sub chain wheel 21 is facilitated, and the replacement cost can be saved.

As another preferable scheme, the connecting shaft of the driving sprocket 1, the connecting shaft of the first sprocket group 2, the connecting shaft of the second sprocket group 3 and the connecting shaft of the driven sprocket 4 are coaxially provided with a cylindrical fixed shaft 6, and the fixed shaft 6 is provided with an annular fixed groove 61. The number of the fixing grooves 61 on each fixing shaft 6 is at least 2, and fixing holes 62 penetrating through the fixing grooves 61 are formed in the side surface of the fixing shaft 6. The fixed shaft 6 is a connecting component between the chain wheel and the frame, and the fixed groove 61 can be matched with a connecting structure on the frame to better fix the chain wheel. The fixing holes 62 can be used for transversely installing reinforcing bolts, and after the chain wheel is fixedly connected with the frame, the mounting structure is further reinforced by the aid of the transverse reinforcing bolts, so that the mounting structure is firmer and more stable.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A multi-sprocket transmission structure is characterized in that: including drive sprocket (1), first sprocket group (2), second sprocket group (3) and driven sprocket (4), first sprocket group (2) includes two numbers of teeth through connecting axle fixed connection and the same first sub-sprocket (21) of size, second sprocket group (3) includes two numbers of teeth through connecting axle fixed connection and the same second sub-sprocket (31) of size, the number of teeth of drive sprocket (1) is the same with the number of teeth of second sub-sprocket (31), the number of teeth of drive sprocket (1) is greater than the number of teeth of driven sprocket (4), the number of teeth of first sub-sprocket (21) is greater than the number of teeth of drive sprocket (1), drive sprocket (1) links to each other with one of them first sub-sprocket (21) through the chain, another first sub-sprocket (21) links to each other with one of them second sub-sprocket (31) through the chain, the other second sub-chain wheel (31) is connected with the driven chain wheel (4) through a chain.

2. The multiple sprocket drive configuration of claim 1, wherein: the driving chain wheel (1) and the second sub chain wheel (31) are both 32-tooth chain wheels, the first sub chain wheel (21) is a 64-tooth chain wheel, and the driven chain wheel (4) is a 16-tooth chain wheel.

3. The multiple sprocket drive configuration of claim 1, wherein: first sub sprocket (21) include outer ring gear (22) and connect fixed subassembly (5) of outer ring gear (22) and connecting axle, fixed subassembly (5) encircle a plurality of arc support piece (51), fixed block (52) of setting on the connecting axle and connect connecting strip (53) of arc support piece (51) and fixed block (52) of setting on outer ring gear (22) inner wall including equidistant.

4. The multiple sprocket drive configuration of claim 3, wherein: the number of the connecting strips (53) between each circular arc-shaped supporting piece (51) and the fixing block (52) is at least 2.

5. The multiple sprocket drive configuration of claim 3, wherein: and a reinforcing strip (55) is fixedly connected between the adjacent circular arc-shaped supporting pieces (51).

6. The multiple sprocket drive configuration of claim 1, wherein: the chain wheel is characterized in that cylindrical fixed shafts (6) are coaxially arranged on the connecting shaft of the driving chain wheel (1), the connecting shaft of the first chain wheel set (2), the connecting shaft of the second chain wheel set (3) and the connecting shaft of the driven chain wheel (4), and annular fixed grooves (61) are formed in the fixed shafts (6).

7. The multiple sprocket drive configuration of claim 6, wherein: the number of the fixing grooves (61) on each fixing shaft (6) is at least 2, and fixing holes (62) penetrating through the fixing grooves (61) are formed in the side face of each fixing shaft (6).