CN211550437U

CN211550437U - Speed reducer with forward and reverse rotation power output

Info

Publication number: CN211550437U
Application number: CN201921840922.8U
Authority: CN
Inventors: 熊国峰; 张晓红
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-09-22
Anticipated expiration: 2029-10-25

Abstract

The utility model provides a reduction gear of positive reverse power take off, the utility model discloses a fix the box on the engine and install positive reverse device and the speed reduction differential gear in the box. The driving bevel gear in the positive and negative rotation device is engaged with the first and second bevel gears at the same time, the first bevel gear, the spline concave-convex middle wheel and the second bevel gear are all installed on the spline shaft handle of the angle gear shared by the speed reducing differential device and the positive and negative rotation device in sequence, and the opposite ends of the first and second bevel gears and the spline concave-convex middle wheel are provided with concave-convex tooth grooves which can rotate on the spline shaft handle of the shared angle gear, but the rotation directions are opposite. The two ends of the spline concave-convex intermediate wheel are provided with concave-convex tooth grooves, and are connected with the spline key of the spline shaft handle of the shared angle gear and can slide along the shaft handle; in a similar way, after the spline concave-convex middle wheel is combined with the second bevel gear, the differential assembly and the power output shaft rotate in opposite directions.

Description

Speed reducer with forward and reverse rotation power output

Technical Field

The utility model belongs to the electromechanical field especially relates to a power conversion and driven device that uses on the vehicle of motorcycle engine as power.

Background

In the conventional motor tricycles and four-wheel vehicles for passenger carrying, an engine is mounted below a driver seat, namely, at a middle position between a front wheel and a rear wheel, and is called a mid-engine. Then, a transmission shaft is connected through a reverse gear, a differential on a rear axle is connected through the transmission shaft, and two driving wheels are rigidly suspended through the rear axle. This structure has the following problems: the engine is arranged in the middle to cause larger vibration and noise, the center of gravity is forward, the direction handle is caused to rotate difficultly, odor generated after the engine is overheated often can easily enter the vehicle, a transmission shaft which must be used occupies space, the ground clearance of the engine is forced to be reduced, long-distance power transmission causes power to be reduced progressively, the engine, the transmission shaft and the rear axle are separately distributed, inconvenience is brought to vehicle design, a plurality of parts are protruded below a vehicle chassis, the ground clearance is small, collision is easily caused, two driving wheels are rigidly suspended through the rear axle, when wheels on one side are affected by road height to be fluctuated, the wheels on the other side of the rear axle are certainly driven to move, the vehicle body is caused to shake left and right, discomfort is caused to passengers, and even the vehicle.

Disclosure of Invention

In order to overcome the technical problem, the utility model provides a compact structure, safe and reliable, more reasonable integrated integration power take off conversion and drive arrangement to can combine with independent suspension, improve the travelling comfort security and the nature controlled of vehicle greatly.

In order to achieve the purpose, the utility model adopts the following technical scheme: a speed reducer for positive and negative rotation power output comprises a box body fixed on an engine, a positive and negative rotation device and a speed reduction differential device which are arranged in the box body, and a power output shaft connected with the speed reduction differential device. The box body is directly fixed on the engine through a connecting plate, and a power shaft of the engine is inserted into a spline sleeve of a driving bevel gear of the forward and reverse rotation device. The positive and negative rotation device comprises a driving bevel gear, a first bevel gear, a second bevel gear, a shifting fork, a spline concave-convex middle wheel and a corner gear shared by the speed reduction differential device and the positive and negative rotation device. A driving bevel gear in the forward and reverse rotation device is simultaneously meshed with a first bevel gear and a second bevel gear, the first bevel gear, a spline concave-convex middle wheel and the second bevel gear are sequentially arranged on a spline shaft handle of an angle gear shared by the speed reduction differential device and the forward and reverse rotation device, the first bevel gear and the second bevel gear can rotate on the spline shaft handle of the shared angle gear, and a concave-convex tooth groove is formed in one end, opposite to the spline concave-convex middle wheel, of the first bevel gear and one end, opposite to the spline concave-convex middle wheel, of the second bevel gear; the concave-convex spline intermediate wheel is connected with the shifting fork, the concave-convex spline intermediate wheel is connected with the spline key of the spline shaft handle of the shared angle gear, and can slide along the shaft handle axis on the spline shaft handle of the angle gear, and concave-convex tooth grooves are formed in two ends of the concave-convex spline intermediate wheel. The speed reduction differential device comprises a corner gear, a basin gear, a differential assembly, a first power output shaft and a second power output shaft which are shared by the speed reduction differential device and the forward and reverse rotating device. The bevel gear is meshed with the bevel gear, the bevel gear is fixed on the differential mechanism assembly, and two ends of the differential mechanism assembly are respectively in key connection with the first power output shaft and the second power output shaft. The power output shaft drives the wheels to move forward or backward.

The utility model has the advantages of compact structure, safety, reliability and wide application. The utility model discloses, with the engine postposition, in the middle of two rear wheels, there is not transmission shaft and rear axle. The speed reducer for positive and negative rotation power output can be connected with wheels on two sides through a flexible shaft, the wheels are independently suspended, and the power output efficiency is improved. The power device, the reverse gear device, the speed reducer and the differential device are integrated and fixed on the frame through the elastic body, vibration and noise are greatly reduced, the steering gear is labor-saving in rotation after the center of gravity is close to the rear, odor and heat generated after the engine is overheated are thrown behind a running vehicle, the influence on passengers and the vehicle is reduced, and the ground clearance between the engine and the speed reducer is increased after a transmission shaft and a rear axle are omitted. The vehicle design and the component layout are easier, more reasonable and more scientific.

Drawings

Fig. 1 is a schematic structural view of a speed reducer for positive and negative rotation power output of the present invention.

Description of the sequence numbers:

1. the differential mechanism comprises a box body, 2, a differential mechanism assembly, 3, a first bearing, 4, a first power output shaft, 5, a second bearing, 6, a third bearing, 7, a first bevel gear, 8, a shifting fork, 9, a spline concave-convex middle wheel, 10, a second bevel gear, 11, a fourth bearing, 12, a basin gear, 13, a second power output shaft, 14, a corner gear, 15, a connecting plate, 16, a driving bevel gear, 17, an engine power shaft, 18, a fifth bearing, 19 and an engine.

Detailed Description

Referring to the attached drawings, the speed reducer for positive and negative rotation power output comprises a box body 1, a positive and negative rotation device and a speed reduction differential device, wherein the positive and negative rotation device and the speed reduction differential device are arranged in the box body 1. The forward and reverse rotation device comprises a bearing III 6, a first bevel gear 7, a shifting fork 8, a spline concave-convex middle wheel 9, a second bevel gear 10, a bearing IV 11, a driving bevel gear 16 and a bearing V18. The speed reduction differential device comprises a differential assembly 2, a first bearing 3, a first power output shaft 4, a second bearing 5, a basin gear 12, a second power output shaft 13 and a horn gear 14.

The speed reducer for positive and negative rotation power output comprises a box body 1 fixed on an engine 19 through a connecting plate 15, and a positive and negative rotation device and a speed reduction differential device in the box body 1. The forward and reverse rotation device comprises a bearing III 6, a first bevel gear 7, a shifting fork 8, a spline concave-convex middle wheel 9, a second bevel gear 10, a bearing IV 11, a driving bevel gear 16 and a bearing V18. The engine power shaft 17 is in key connection with a driving bevel gear 16, the driving bevel gear 16 is simultaneously meshed with a first bevel gear 7 and a second bevel gear 10, the first bevel gear 7 and a spline concave-convex intermediate wheel 9 are sequentially arranged on a spline shaft of an angle gear 14, the first bevel gear 7 and the second bevel gear 10 can rotate on the spline shaft of the angle gear 14, the spline concave-convex intermediate wheel 9 is in spline connection with the spline shaft of the angle gear 14, and the spline concave-convex intermediate wheel can only slide on the spline shaft of the angle gear 14 along the shaft axis. The spline concave-convex intermediate wheel 9 is connected with the shifting fork 8. The ends of the first bevel gear 7 and the second bevel gear 10 opposite to the spline concave-convex middle wheel 9 are provided with concave-convex tooth grooves; concave-convex tooth grooves are formed at two ends of the spline concave-convex middle wheel 9. The angle gear 14 is meshed with a bevel ring gear 12 in a speed reduction differential device, and the speed reduction differential device comprises a differential assembly 2, a first bearing 3, a first power output shaft 4, a second bearing 5, the bevel ring gear 12, a second power output shaft 13 and the angle gear 14. The bevel ring gear 12 is fixed to the differential assembly 2. Two ends of the differential assembly 2 are respectively connected with the first power output shaft 4 and the second power output shaft 13 in a key mode.

As shown in the figure, the working principle of the utility model is as follows:

after the engine 19 is shifted to output power, the engine power shaft 17 drives the driving bevel gear 16 in the box body 1 to rotate, the driving bevel gear 16 simultaneously drives the first bevel gear 7 and the second bevel gear 10 to rotate on the spline shaft of the angle gear 14, but the directions of the first bevel gear 7 and the second bevel gear 10 are opposite. When the shifting fork 8 drives the spline concave-convex intermediate wheel 9 to slide to the first bevel gear 7, after the concave-convex tooth groove of the spline concave-convex intermediate wheel 9 is combined with the concave-convex tooth groove of the first bevel gear 7, the spline concave-convex intermediate wheel 9 and the first bevel gear 7 rotate together, and the angle gear 14 is driven to rotate together through key connection between the spline concave-convex intermediate wheel 9 and a spline shaft of the angle gear 14. The bevel gear 14 is meshed with the bevel ring gear 12 to drive the differential assembly 2 fixed with the bevel ring gear 12 to rotate, so that the first power output shaft 4 and the second power output shaft 13 are driven to output power to wheels. Similarly, after the spline concave-convex intermediate wheel 9 and the second bevel gear 10 are combined, the angle gear 14 rotates reversely along with the second bevel gear 10, and the power is reversely output to the wheel.

Claims

1. The utility model provides a reduction gear of positive and negative rotation power take off, including box (1) and the interior positive and negative rotation device and the speed reduction differential gear of box (1), positive and negative rotation device includes bearing three (6), first bevel gear (7), shift fork (8), spline unsmooth intermediate wheel (9), second bevel gear (10), bearing four (11), initiative bevel gear (16), bearing five (18), speed reduction differential gear includes differential assembly (2), bearing one (3), first power output shaft (4), bearing two (5), basin gear (12), second power output shaft (13), horn gear (14), its characterized in that: the driving bevel gear (16) is meshed with the first bevel gear (7) and the second bevel gear (10) at the same time, the first bevel gear (7), the spline concave-convex intermediate wheel (9) and the second bevel gear (10) are sequentially installed on a spline shaft of an angle gear (14), the angle gear (14) is meshed with a basin gear (12), the basin gear (12) is fixed on the differential mechanism assembly (2), and two ends of the differential mechanism assembly (2) are respectively in key connection with the first power output shaft (4) and the second power output shaft (13).

2. A reducer for positive and negative rotational power output according to claim 1, wherein the first bevel gear (7) and the second bevel gear (10) are rotatable on the spline shaft of the angle gear (14).

3. A reducer for positive and negative rotational power output according to claim 1, wherein the splined relief intermediate wheel (9) is keyed to the splined shank of the horn gear (14) and is able to slide on the splined shank of the horn gear (14) along the axis of the splined shank of the horn gear (14).

4. A reducer for positive and negative rotational power output according to claim 1, wherein the spline concave-convex intermediate wheel (9) is connected to the shift fork (8).

5. A decelerator of positive and negative rotation power output according to claim 1, characterised in that the first bevel gear (7) and the second bevel gear (10) have male and female tooth grooves at the end opposite to the spline male and female intermediate wheel (9); concave-convex tooth grooves are formed at two ends of the spline concave-convex middle wheel (9).