CN220891054U

CN220891054U - Reverse gear device

Info

Publication number: CN220891054U
Application number: CN202322915444.5U
Authority: CN
Inventors: 周强; 周贤刚
Original assignee: Chongqing Molong Machinery Co ltd
Current assignee: Chongqing Molong Machinery Co ltd
Priority date: 2023-10-30
Filing date: 2023-10-30
Publication date: 2024-05-03
Anticipated expiration: 2033-10-30

Abstract

The utility model provides a reverse gear device, and belongs to the technical field of reverse gear operating mechanisms. The motor tricycle solves the problem that a transmission shaft of the existing motor tricycle is not centered relative to the center of gravity of the whole motorcycle. The reverse gear device comprises a box body, wherein an input shaft coaxially arranged with an engine rotating shaft, a first rotating shaft parallel to the input shaft and a second rotating shaft are rotatably arranged in the box body, a first gear is arranged on the first rotating shaft, a second gear and a third gear are arranged on the second rotating shaft, the first gear is meshed with the second gear, a fourth gear is slidably arranged on the input shaft, and the fourth gear can be independently meshed with the first gear and the third gear. Because the input shaft is coaxial with the rotating shaft of the engine, the transmission shaft is centered, the structure is simple, and the cost is low.

Description

Reverse gear device

Technical Field

The utility model belongs to the technical field of reverse gear operating mechanisms, and relates to a reverse gear device.

Background

The output shaft of the motor tricycle engine in the market at present extends laterally, and a bevel gear is arranged in the reverse gear device, so that power steering is realized through bevel gear transmission. For example, chinese patent discloses a motor tricycle axle driver [ publication No. CN2359163], which is composed of a gear box, a torsion shaft and a rear axle differential, wherein one end in the gear box is provided with two bevel gears engaged with each other, one bevel gear is sleeved on a spline hole connected with a spline shaft of an engine, the other bevel gear is connected with one end of the spline shaft, the other end of the spline shaft is provided with a toggle gear with a toggle rod and a shifting fork, the toggle gear is engaged with one end of a duplex gear movably sleeved on a mandrel, and the other end of the duplex gear is engaged with a gear fixed on a rotating shaft.

In the structure, the engine is arranged in the middle relative to the motor tricycle, but the output shaft of the engine extends laterally (extends leftwards or rightwards), so that the torsion shaft deviates from the center line position of the motor tricycle, and the torsion shaft is not in the middle relative to the center of gravity of the whole motor tricycle.

Disclosure of utility model

The utility model aims to solve the problems in the prior art and provides an inverted gear capable of centering a transmission shaft.

The aim of the utility model can be achieved by the following technical scheme:

The utility model provides a reverse gear ware, includes the box, rotatable install with the coaxial input shaft that sets up of engine pivot in the box, with the first pivot and the second pivot of input shaft parallel, first pivot is last to have first gear, second pivot is last to have second gear and third gear, first gear and second gear engagement, the last slip of input shaft is equipped with the fourth gear, the fourth gear can alone with first gear and third gear engagement.

When the fourth gear is meshed with the third gear, the fourth gear is separated from the meshing with the first gear, and the input shaft drives the second rotating shaft to rotate through the fourth gear and the third gear. When the fourth gear is meshed with the first gear, the fourth gear is separated from meshing with the third gear, the input shaft drives the first rotating shaft to rotate through the fourth gear and the first gear, and the first rotating shaft drives the second rotating shaft to rotate through the first gear and the second gear.

The reverse gear device is connected with the transmission shaft of the motor tricycle/four-wheel motorcycle, and the input shaft is coaxial with the rotating shaft of the engine, so that the centering of the transmission shaft is realized, the problem that the center of gravity of the whole motorcycle is not centered is avoided, and the reverse gear device has the advantages of simple scheme, low cost and the like.

In the above-described inverter, the fourth gear has three states: a first state of meshing with the first gear, a second state of meshing with the non-meshing state, and a third state of meshing with the third gear, the fourth gear in the second state being located between the fourth gear in the first state and the fourth gear in the third state.

In the above-mentioned backstop, the axis of input shaft, the central line of first pivot and the axis of second pivot are located three summit of triangle respectively.

In the above-mentioned backstop, a section of sliding fit of input shaft and fourth gear is the integral key shaft, have the internal spline tooth with integral key shaft complex in the fourth gear.

The fourth gear moves axially along the spline shaft under the action of the gear shifting fork, and meanwhile, circumferential limiting is achieved under the action of the internal spline teeth and the spline shaft.

In the above-mentioned backstop, link firmly the duplicate gear on the second pivot coaxial, above-mentioned second gear is one of them gear of duplicate gear, and above-mentioned third gear is another gear of duplicate gear.

In the above-mentioned backstop, the coaxial fifth gear that links firmly in the second pivot, normal running fit has the third pivot in the box, coaxial sixth gear that links firmly in the third pivot, fifth gear and sixth gear meshing are shown.

One end of the third rotating shaft extends out of the box body, and the third rotating shaft is used as an output shaft of the backstop and is connected with a transmission shaft of the motor tricycle/four-wheel motorcycle. In the case where the third rotating shaft is not provided, the second rotating shaft may be used as an output shaft of the backstop.

In the above-mentioned inverter, an end of the input shaft remote from the engine has an extended end that extends out of the case.

The hydraulic skip of tricycle needs oil pump drive, and the extension end of input shaft extension box can be as the drive shaft for driving oil pump work.

Compared with the prior art, the reverse gear device has the following advantages:

Because the input shaft is coaxial with the engine rotating shaft, the transmission shaft is centered, the problem that the center of gravity of the whole vehicle is not centered can be avoided, and the structure is simple and the cost is low.

Drawings

Fig. 1 is a schematic view of the internal structure of the inverter provided by the utility model.

Fig. 2 is a positional relationship diagram of the input shaft, the first rotation shaft, and the second rotation shaft.

Fig. 3 is a schematic view of the internal structure of the reverse gear mechanism in which the input shaft extends out of the case.

In the figure, 1, an input shaft; 11. a fourth gear; 12. a spline shaft; 13. an extension end; 2. a first rotating shaft; 21. a first gear; 3. a second rotating shaft; 31. a second gear; 32. a third gear; 33. a fifth gear; 4. a third rotating shaft; 41. and a sixth gear.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

The utility model provides a reverse gear ware, includes the box (not shown in the figure), as shown in fig. 1, through the rotatable input shaft 1 that links to each other with the engine shaft coaxial in the box, first pivot 2 and the second pivot 3 parallel with input shaft 1 of installing, input shaft 1's input stretches out the box, as shown in fig. 2, input shaft 1's axis, first pivot 2's central line and the axis of second pivot 3 are located triangle-shaped three summit respectively. As shown in fig. 1, a fifth gear 33 is coaxially and fixedly connected to the second rotating shaft 3, a third rotating shaft 4 is rotatably matched in the box body, one end of the third rotating shaft 4 extends out of the box body to serve as an output shaft of the backstop, a sixth gear 41 is coaxially and fixedly connected to the third rotating shaft 4, and the fifth gear 33 is meshed with the sixth gear 41.

As shown in fig. 1, a first gear 21 is arranged on a first rotating shaft 2, a second gear 31 and a third gear 32 are arranged on a second rotating shaft 3, the first gear 21 is meshed with the second gear 31, a fourth gear 11 is slidably arranged on an input shaft 1, one section of the input shaft 1, which is slidably matched with the fourth gear 11, is a spline shaft 12, internal spline teeth matched with the spline shaft 12 are arranged in the fourth gear 11, the fourth gear 11 axially moves along the spline shaft 12 under the action of a gear shifting fork, and meanwhile, circumferential limiting is realized under the action of the internal spline teeth and the spline shaft 12. The fourth gear 11 may be individually engaged with the first gear 21 and the third gear 32.

As shown in fig. 1, the second rotating shaft 3 is coaxially and fixedly connected with a duplex gear, the second gear 31 is one of the duplex gears, and the third gear 32 is the other of the duplex gears.

As shown in fig. 1, the fourth gear 11 has three states: the fourth gear 11 in the second state ② is located between the fourth gear 11 in the first state ① and the fourth gear 11 in the third state ③, the first state ① being in mesh with the first gear 21, the second state ② being in non-mesh state, and the third state ③ being in mesh with the third gear 32.

When the fourth gear 11 is meshed with the third gear 32, the fourth gear 11 is disengaged from the first gear 21, and the input shaft 1 drives the second rotating shaft 3 to rotate through the fourth gear 11 and the third gear 32. When the fourth gear 11 is meshed with the first gear 21, the fourth gear 11 is disengaged from the third gear 32, the input shaft 1 drives the first rotating shaft 2 to rotate through the fourth gear 11 and the first gear 21, and the first rotating shaft 2 drives the second rotating shaft 3 to rotate through the first gear 21 and the second gear 31. When the fourth gear 11 is in the second state ②, the fourth gear 11 is simultaneously disengaged from the first gear 21 and the third gear 32, and the rotation of the input shaft 1 is not transmitted to the third rotation shaft 4, which is in neutral.

In some motor tricycle or motor four-wheeled vehicles, the hydraulic skip requires oil pump drive. In this embodiment, as shown in fig. 3, the end of the input shaft 1 remote from the engine has a protruding end 13 that protrudes out of the housing. The projecting end 13 of the input shaft 1 projecting from the housing can be used as a drive shaft for driving the oil pump into operation.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a reverse gear ware, includes the box, its characterized in that, rotatable install in the box with the coaxial input shaft (1) that sets up of engine shaft, with first pivot (2) and second pivot (3) of input shaft (1) parallel, first gear (21) have on first pivot (2), second gear (31) and third gear (32) have on second pivot (3), first gear (21) and second gear (31) meshing, the slip is equipped with fourth gear (11) on input shaft (1), fourth gear (11) can alone with first gear (21) and third gear (32) meshing.

2. The reverse gear according to claim 1, characterized in that the fourth gear (11) has three states: a first state of meshing with the first gear (21), a second state of meshing with the non-meshing state, and a third state of meshing with the third gear (32), the fourth gear (11) in the second state being located between the fourth gear (11) in the first state and the fourth gear (11) in the third state.

3. The reverse gear according to claim 1, characterized in that the central axis of the input shaft (1), the central axis of the first rotating shaft (2) and the central axis of the second rotating shaft (3) are located at three vertices of a triangle, respectively.

4. The reverse gear according to claim 1, characterized in that a section of the input shaft (1) in sliding fit with the fourth gear (11) is a spline shaft (12), and the fourth gear (11) has internal spline teeth in fit with the spline shaft (12).

5. The reverse gear according to claim 1, wherein the second rotating shaft (3) is coaxially and fixedly connected with a duplex gear, the second gear (31) is one gear of the duplex gears, and the third gear (32) is the other gear of the duplex gears.

6. The reverse gear device according to claim 1 or 2 or 3 or 4 or 5, wherein a fifth gear (33) is coaxially and fixedly connected to the second rotating shaft (3), a third rotating shaft (4) is rotatably matched in the box body, a sixth gear (41) is coaxially and fixedly connected to the third rotating shaft (4), and the fifth gear (33) is meshed with the sixth gear (41).

7. The reverse gear according to claim 1 or 2 or 3 or 4 or 5, characterized in that the end of the input shaft (1) remote from the engine has a protruding end (13) protruding out of the housing.