CN210063285U

CN210063285U - Hard shaft transmission device

Info

Publication number: CN210063285U
Application number: CN201920777600.7U
Authority: CN
Inventors: 李富朝; 李孟松
Original assignee: Chongqing Mao Rong Industrial Co Ltd
Current assignee: Chongqing Mao Rong Industrial Co Ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-02-14
Anticipated expiration: 2029-05-28

Abstract

A hard shaft transmission device is used for solving the technical problems of chain fracture and falling of a two-wheeled motorcycle adopting chain transmission, and comprises a loop bar, a first box body and a second box body which are positioned at two ends of the loop bar and communicated with the loop bar, wherein a transmission shaft penetrates through the loop bar, the left end of the transmission shaft extends into the first box body, the left end of the transmission shaft is fixedly sleeved with a first transmission gear close to the end part, the first transmission gear is meshed with an input gear, a connecting column is fixed on the side wall of the input gear, the connecting column rotatably penetrates through the side wall of the first box body, a mounting hole coaxial with the connecting column is formed in the connecting column, a first bearing concentric with the connecting column is fixed on the outer wall of the first box body, a mounting plate is sleeved on the outer wall of the first bearing, the right end of the transmission shaft extends into the second box body, a second transmission gear is fixed on the right end part of the transmission shaft, the second transmission gear is engaged with an output gear for driving the rear wheel of the motorcycle to rotate, and is mainly used for hard shaft transmission of the motorcycle.

Description

Hard shaft transmission device

Technical Field

The utility model relates to a two-wheeled motorcycle's power transmission technical field, concretely relates to be used for carrying out driven hard axle transmission to the motorcycle.

Background

The two-wheel motorcycle has high practicability and lower use and maintenance cost, can provide higher running speed, and particularly becomes an important vehicle in some remote areas with underdeveloped traffic, and people can not leave the motorcycle in daily life, so that the two-wheel motorcycle becomes a preferred vehicle for people to go out in the remote areas and some areas with relatively poor road conditions.

Two-wheeled motorcycle among the prior art all adopts chain drive basically, however chain drive has a great deal of unstable factor in motorcycle work, firstly, the chain adopts many linkage units to constitute, this kind of structure has increased the cracked possibility of chain undoubtedly, the motorcycle is difficult to guarantee in the safety shape of going, secondly, the chain is in tight state for a long time in the use, the connection clearance between the linkage unit can reduce gradually in the chain leads to the whole length of chain to increase, thereby lead to the bad phenomenon that transmission chain drops on the motorcycle, thereby influence the safety that the motorcycle went in.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model discloses to prior art's not enough, release a motorcycle hard shaft transmission, the device has replaced the chain drive of motorcycle among the prior art, and fundamentally has solved the motorcycle drive chain fracture that mentions in the background art, the technical problem that drive chain drops from the motorcycle.

Second, the concrete technical scheme

The realization principle is as follows: a hard shaft transmission device comprises a loop bar with openings at two ends, a first box body which is fixed at the left end of the loop bar and is communicated with the loop bar, a second box body which is fixed at the right end of the loop bar and is communicated with the loop bar, a transmission shaft penetrates through the loop bar, the left end of the transmission shaft extends into the first box body, a first transmission gear is fixedly sleeved at the left end of the transmission shaft close to the end part and is meshed with an input gear, a connecting column is fixed on the side wall of the input gear and rotates to penetrate through the side wall of the first box body, a mounting hole which is coaxial with the connecting column and is used for connecting an engine is formed in the connecting column, a first bearing which is coaxial with the connecting column is fixedly sleeved on the outer wall of the first box body, a mounting plate for mounting the engine is sleeved on the outer wall of the first bearing, and the right end of the transmission shaft extends into the second box body, the right end of the transmission shaft is fixed with a second transmission gear which is meshed with an output gear used for driving the rear wheel of the motorcycle to rotate.

The working principle is as follows: the mounting plate is arranged on an engine, the mounting hole is arranged at the output end of the engine, the engine of the motorcycle is started, the engine drives the input gear to rotate, the input gear drives the first transmission gear to rotate, the first transmission gear drives the transmission shaft to rotate, and further drives the second transmission gear to rotate, the second transmission gear drives the output gear to rotate, so that the output gear drives the rear wheel of the motorcycle to rotate, hard shaft transmission is realized, when the motorcycle runs on a road surface with uneven terrain, when the front wheel and the rear wheel are at different heights during running, the transmission shaft rotates around the central line of the first bearing when the front wheel and the rear wheel are at different heights, the motorcycle is adjusted to adapt to different terrains, and the normal operation of the motorcycle is ensured for a stable output environment of the engine.

The utility model discloses improve simply on prior art's basis, adopt hard axle transmission mode to replace traditional chain drive mode, solved the technical problem who mentions in the background art, the practicality is strong, is fit for popularizing and applying.

Preferably, the method comprises the following steps: the transmission shaft is including the collinear primary shaft in axle center, secondary shaft and third axle, and this primary shaft rotates to be located just the right-hand member stretches into in the first box in the loop bar, this secondary shaft is located in the loop bar, this third axle rotates to be located in the second box and the left end stretch into in the loop bar, be connected with first shaft coupling between primary shaft and the secondary shaft, be connected with the second shaft coupling between secondary shaft and the third axle.

The three transmission shafts are respectively a first shaft, a second shaft and a third shaft, and the transmission shafts can be disassembled and assembled during transportation or storage, so that transportation and storage are facilitated, and space is saved.

Preferably, the method comprises the following steps: the outer wall that the first axle right-hand member is close to the tip is gone up and is opened there is the external spline, it has the external spline to open on the outer wall that second axle left end, right-hand member are close to the tip, it has the external spline to open on the outer wall that the third axle left end is close to the tip, first shaft coupling is hollow tube structure, and has all opened internal spline near both ends on this first shaft coupling inner wall, the internal spline of this first shaft coupling left end, right-hand member respectively with the external spline of first axle right-hand member, the external spline meshing of second axle left end, the second shaft coupling is hollow tube structure, is close to both ends on this second shaft coupling inner wall and has all opened the internal spline, the internal spline of this second shaft coupling left end, right-hand member respectively with the external spline of second axle right-hand member, the external spline meshing of third axle left end, internal spline, external spline all are on a parallel with the first axle.

When the motorcycle is slightly moved by a large bump during running, the slight movement of the transmission shaft will have a significant adverse effect on the other end of the transmission shaft, for example, when the transmission shaft is vibrated or bumped to produce a small displacement in the direction of the output gear, the vibration or bumping effect will be quickly transmitted to the output gear, thereby affecting the normal operation of the output gear, and when the output gear is vibrated or bumped, the vibration or bumped will be transmitted to the input gear, thereby having an adverse effect on the motorcycle engine. Under this condition, the utility model discloses will the transmission shaft is established to three, is primary shaft, secondary shaft and third axle respectively to adopt splined connection between primary shaft, secondary shaft adopt splined connection between secondary shaft, the third axle, foretell unfavorable condition just can be avoided to this kind of connected mode, works as the primary shaft receives vibration or jolts and produces less displacement, and this primary shaft can not arouse the vibration of secondary shaft to vibration or jolt the effect can not transmit on the output gear, consequently do not influence the normal work of motorcycle rear wheel, works as the third axle receives vibration or jolts when producing less displacement, and this third axle can not arouse the vibration of secondary shaft equally, thereby vibration or jolt the effect can not transmit on the input gear, thereby guarantee motorcycle engine's normal work.

Preferably, the method comprises the following steps: two second bearings are sleeved on the first shaft in the first box body, one second bearing is close to the left end of the first shaft and fixed on the inner wall of the first box body, and the other second bearing is close to the right end of the first shaft and fixed on the inner wall of the first box body. The two second bearings are arranged, so that sliding friction between the first shaft and the first box body is avoided, and the two second bearings can be used for accurately positioning the first shaft, so that the accuracy of the installation direction of the first shaft is ensured.

Preferably, the method comprises the following steps: and the third shaft is sleeved with three third bearings, one of the third bearings is close to the left end of the third shaft and fixed on the inner wall of the second box, the other of the third bearings is close to the right end of the third shaft and fixed on the inner wall of the second box, and the third bearing is positioned between the other two third bearings.

Set up the third bearing is likewise in order to avoid the third axle with sliding friction between the second box to be located about both ends the third bearing is also in order to incite somebody to action the third axle pinpoints, guarantees this third axle with first axle center collineation, will the third bearing is located two between the third bearing, is equally in order to strengthen right the third axle is fixed a position and is oriented, thereby is favorable to guaranteeing first axle, second shaft, third axle center collineation.

The utility model has the advantages that:

1. the input gear, the first transmission gear, the second transmission gear, the output gear and the transmission shaft are arranged, the traditional chain transmission mode adopted by the motorcycle is replaced, and the technical problem that chain transmission in the background technology has various instability is solved.

2. Will pass the merit axle and establish to primary shaft, secondary shaft and third axle to adopt splined connection between primary shaft, secondary shaft adopt splined connection between secondary shaft, the third axle, this kind of mode can be avoided effectively input gear receives vibration or jolts and with this kind of vibration or jolt the transmission to output gear's adverse effect has been avoided effectively output gear receives vibration or jolts and with this kind of vibration or jolt the transmission to input gear's adverse effect has guaranteed the utility model discloses stability in work.

3. Two the second bearing the primary shaft is directional, three the third bearing is right the third is walked and is directed, thereby has guaranteed primary shaft, secondary shaft and third shaft are in stable axle center collinear state, have further guaranteed the utility model discloses stability in work.

4. The utility model discloses simple structure, it is lower to improve the cost, has solved the motorcycle chain drive who mentions in the background art when most leading and has had the technical problem of a great deal of instability, the utility model discloses the suitability is strong, is fit for promoting.

Drawings

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

fig. 2 is an enlarged schematic view of a cross-sectional structure at D-D in fig. 1.

Description of reference numerals: the gear transmission mechanism comprises a sleeve rod 1, a first box body 2, a second box body 3, a transmission shaft 4, a first shaft 4a, a second shaft 4b, a third shaft 4c, a first transmission gear 5, an input gear 6, a connecting column 7, a mounting hole 8, a first bearing 9, a mounting plate 10, a second transmission gear 11, an output gear 12, a first coupler 13, a second coupler 14, an external spline 15, an internal spline 16, a second bearing 17, a third bearing 18, a third box body 19, a flange shaft 20, a lantern ring 21, a sixth bearing 22, a seventh bearing 23, an oil seal 24, an end cover 25, a fourth bearing 26 and a fifth bearing 27.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1: a hard shaft transmission device comprises a loop bar 1 with openings at two ends, a first box body 2 fixed at the left end of the loop bar 1 and communicated with the loop bar 1, and a second box body 3 fixed at the right end of the loop bar 1 and communicated with the loop bar 1, wherein a transmission shaft 4 penetrates through the loop bar 1, the left end of the transmission shaft 4 extends into the first box body 2, a first transmission gear 5 is fixedly sleeved at the left end of the transmission shaft 4 close to the end part, the first transmission gear 5 is meshed with an input gear 6, a connecting column 7 is fixed on the side wall of the input gear 6, the connecting column 7 is vertical to the transmission shaft 4, the plane formed by the rotation of the input gear 6 is vertical to the connecting column 7, a fourth bearing 26 and a fifth bearing 27 are sleeved on the connecting column 7, the fourth bearing 26 and the fifth bearing 27 are respectively and fixedly connected with the first box body 2, and the fifth bearing 27 is positioned outside the fourth bearing 26, the connecting column 7 passes through the side wall of the first box body 2 in a rotating way, a mounting hole 8 which is coaxial with the connecting column 7 and is used for connecting an engine is arranged on the connecting column 7, the mounting hole 8 is an internal spline hole, a first bearing 9 which is coaxial with the connecting column 7 is fixedly sleeved on the outer wall of the first box body 2, a mounting plate 10 used for mounting the engine is sleeved on the outer wall of the first bearing 9, the right end of the transmission shaft 4 extends into the second box body 3, a second transmission gear 11 is fixed at the end part of the right end of the transmission shaft 4, an output gear 12 used for driving the rear wheel of the motorcycle to rotate is meshed with the second transmission gear 11, the output gear 12 and the input gear 6 are arranged on the same side of the transmission shaft 4, the plane formed by the rotation of the output gear 12 is parallel to the plane formed by the rotation of the input gear 6, and the right side of the, a flange shaft 20 penetrates through the third box body 19, the flange shaft 20 is coplanar with a plane formed by the connecting column 7 and the transmission shaft 4, the flange shaft 20 is perpendicular to the transmission shaft 4, the circumferential edge of a central hole of the output gear 12 protrudes outwards to form a lantern ring 21, a sixth bearing 22 penetrates through the lantern ring 21, the sixth bearing 22 is sleeved on the flange shaft 20, a seventh bearing 23 is sleeved on the circumferential edge of the inner end of the output gear 12, and the seventh bearing 23 is fixed on the inner wall of the third box body 19. The center of the inner end of the output gear 12 corresponds to the center of the hub of the rear wheel of the motorcycle and is fixedly connected with the hub of the rear wheel of the motorcycle, so that the output gear 12 rotates to drive the hub of the rear wheel of the motorcycle to rotate, and the rear wheel of the motorcycle is driven.

As shown in fig. 1-2, the transmission shaft 4 includes a first shaft 4a, a second shaft 4b and a third shaft 4c, the axes of which are collinear, the first shaft 4a is rotatably disposed in the first box 2, the right end of the first shaft extends into the loop bar 1, the second shaft 4b is disposed in the loop bar 1, and the third shaft 4c is rotatably disposed in the second box 3, and the left end of the third shaft extends into the loop bar 1. The outer wall of the right end of the first shaft 4a close to the end part is provided with an external spline 15, the outer wall of the left end and the right end of the second shaft 4b close to the end part is provided with the external spline 15, the outer wall of the left end and the right end of the third shaft 4c close to the end part is provided with the external spline 15, a first coupling 13 is connected between the first shaft 4a and the second shaft 4b, the first coupling 13 is of a hollow cylinder structure, the inner wall of the first coupling 13 close to the two ends is provided with an internal spline 16, the internal splines 16 of the left end and the right end of the first coupling 13 are respectively meshed with the external spline 15 of the right end of the first shaft 4a and the external spline 15 of the left end of the second shaft 4b, a second coupling 14 is connected between the second shaft 4b and the third shaft 4c, the second coupling 14 is of a hollow cylinder structure, the inner wall of the second coupling 14 close to the two ends is provided with the internal, the left and right internal splines 16 of the second coupling 14 are respectively engaged with the right and left

external splines

15 and 15 of the second and

third shafts

4b and 4c, and both the internal splines 16 and the external splines 15 are parallel to the first shaft 4 a. The cover that rotates on the first axle 4a is equipped with oil blanket 24, and this oil blanket 24 is located second bearing 17 right side and with 2 lateral wall sealing of first box, the cover that rotates on the third axle 4c is equipped with end cover 25, and this end cover 25 is located three third bearing 18 left sides, and this end cover 25 with 3 lateral wall sealing of second box.

Two second bearings 17 are sleeved on the first shaft 4a in the first box body 2, wherein one second bearing 17 is close to the left end of the first shaft 4a and fixed on the inner wall of the first box body 2, and the other second bearing 17 is close to the right end of the first shaft 4a and fixed on the inner wall of the first box body 2. Be located in the second box 3 the cover is equipped with three third bearings 18 on the third axle 4c, and one of them this third bearing 18 is close to third axle 4c left end just fixes on the 3 inner walls of second box, another this third bearing 18 is close to third axle 4c right-hand member just fixes on the 3 inner walls of second box, and this third bearing 18 of third is located between two other these third bearings 18.

The working principle is as follows: the mounting plate 10 is fixed on a box body of a motorcycle engine, the mounting plate 10 is mounted on the engine in a bolt connection mode, the mounting hole 8 is mounted at the output end of the engine, an internal spline is arranged on the inner wall of the mounting hole 8, an output shaft of the engine drives the input gear 6 to rotate under the action of the internal spline on the inner wall of the mounting hole 8, the input gear 6 drives the first transmission gear 5 to rotate, the first transmission gear 5 drives the first shaft 4a to rotate, the first shaft 4a drives the second shaft 4b to rotate under the action of the first coupler 13, the second shaft 4b drives the third shaft 4c to rotate under the action of the second coupler 14, the third shaft 4c drives the second transmission gear 11 to rotate, the second transmission gear 11 drives the output gear 12 to rotate, and the output gear 12 corresponds to the center of the inner end of the output gear 12 and corresponds to the center of a rear wheel hub of the motorcycle and the output gear 12 are mounted The rear wheel hub of the motorcycle is fixedly connected, so that the output gear 12 rotates to drive the rear wheel hub of the motorcycle to rotate, and the rear wheel of the motorcycle is driven to rotate to realize normal operation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. A hard shaft transmission device is characterized in that: comprises a loop bar (1) with two open ends, a first box body (2) which is fixed at the left end of the loop bar (1) and is communicated with the loop bar (1), and a second box body (3) which is fixed at the right end of the loop bar (1) and is communicated with the loop bar (1), wherein a transmission shaft (4) is arranged in the loop bar (1) in a penetrating way, the left end of the transmission shaft (4) extends into the first box body (2), a first transmission gear (5) is fixedly sleeved at the left end of the transmission shaft (4) close to the end part, the first transmission gear (5) is meshed with an input gear (6), a connecting column (7) is fixed on the side wall of the input gear (6), the connecting column (7) rotatably penetrates through the side wall of the first box body (2), a mounting hole (8) which is coaxial with the connecting column (7) and is used for connecting an engine is arranged on the connecting column (7), a first bearing (9) which is coaxial with the connecting column (7) is fixedly sleeved on the outer wall of the first, the outer wall of the first bearing (9) is sleeved with a mounting plate (10) used for mounting an engine, the right end of the transmission shaft (4) extends into the second box body (3), a second transmission gear (11) is fixed at the end part of the right end of the transmission shaft (4), and the second transmission gear (11) is meshed with an output gear (12) used for driving the rear wheel of the motorcycle to rotate.

2. A hard shaft drive as defined in claim 1, wherein: transmission shaft (4) are including the collinear primary shaft (4a) in axle center, secondary shaft (4b) and third axle (4c), and this primary shaft (4a) rotates to be located in first box (2) and the right-hand member stretches into in loop bar (1), this secondary shaft (4b) is located in loop bar (1), this third axle (4c) rotates to be located in second box (3) and the left end stretches into in loop bar (1), be connected with first shaft coupling (13) between primary shaft (4a) and secondary shaft (4b), be connected with second shaft coupling (14) between secondary shaft (4b) and third axle (4 c).

3. A hard shaft drive as defined in claim 2, wherein: the outer wall of the right end of the first shaft (4a) is close to the end part, an outer spline (15) is arranged on the outer wall of the left end of the second shaft (4b), the outer wall of the right end of the second shaft (4b) is close to the end part, the outer spline (15) is arranged on the outer wall of the left end of the third shaft (4c), the first shaft coupling (13) is of a hollow cylindrical structure, inner splines (16) are arranged on the inner wall of the first shaft coupling (13) close to the two ends, the inner splines (16) at the left end and the right end of the first shaft coupling (13) are respectively meshed with the outer spline (15) at the right end of the first shaft (4a) and the outer spline (15) at the left end of the second shaft (4b), the second shaft coupling (14) is of a hollow cylindrical structure, the inner splines (16) are arranged on the inner wall of the second shaft coupling (14) close to the two ends, the left end of the second shaft coupling (, And an internal spline (16) at the right end is respectively meshed with an external spline (15) at the right end of the second shaft (4b) and an external spline (15) at the left end of the third shaft (4c), and the internal spline (16) and the external spline (15) are both parallel to the first shaft (4 a).

4. A hard shaft drive as defined in claim 2, wherein: the first shaft (4a) in the first box body (2) is sleeved with two second bearings (17), one second bearing (17) is close to the left end of the first shaft (4a) and fixed on the inner wall of the first box body (2), and the other second bearing (17) is close to the right end of the first shaft (4a) and fixed on the inner wall of the first box body (2).

5. A hard shaft drive as defined in claim 2, wherein: be located in the second box (3) on third axle (4c) the cover be equipped with three third bearing (18), one of them this third bearing (18) are close to third axle (4c) left end just fixes on second box (3) inner wall, this third bearing (18) of another is close to third axle (4c) right-hand member just fixes on second box (3) inner wall, and this third bearing (18) of third is located between two other these third bearing (18).