CN211314997U

CN211314997U - Automatic separation type gearbox

Info

Publication number: CN211314997U
Application number: CN201921679326.6U
Authority: CN
Inventors: 许江涛
Original assignee: Nanjing Sae Machinery Co ltd
Current assignee: Nanjing Sae Machinery Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-08-21
Anticipated expiration: 2029-10-09

Abstract

The utility model relates to a gearbox technical field specifically is an automatic separation type gearbox, including outer box, planetary gear set and clutching mechanism, outer box includes gearbox body, case lid and clutch box, and gearbox body's inside is provided with planetary gear set, the inside clutching mechanism that is equipped with of clutch box, and beneficial effect is: the utility model discloses in, stop to provide power to the main input shaft when power equipment, main input shaft rotational speed descends, the rotational speed of reduction gear input shaft still keeps unchangeable in the twinkling of an eye that the main input shaft reduces to there is the rotational speed difference between messenger's fixed tooth and the movable tooth, movable tooth takes place to break away from with fixed tooth this moment, so when rotating reduction gear output shaft, can't transmit the moment of torsion to the main input shaft, play fine protection to the motor promptly, and also comparatively laborsaving to reduction gear output shaft drive moreover.

Description

Automatic separation type gearbox

Technical Field

The utility model relates to a gearbox technical field specifically is an automatic separation type gearbox.

Background

The gear box is a gear transmission device capable of fixing or changing the transmission ratio of the output shaft and the input shaft in a stepping mode, and meets the requirements of different requirements on traction force of driving wheels and vehicle speed under different driving conditions of starting, accelerating, driving, overcoming various road obstacles and the like. Usually, the gearbox is installed between the output shaft and the moving part of power take-off (motor, engine, etc.), and under the condition that power take-off breaks down, power take-off can't transmit power to the gearbox, the moving part is because connecting the gearbox this moment, make the moving part be difficult to rotate (for example, in the large-scale toy car product among the prior art, under the circumstances that the toy car does not have the electricity, all be in the engaged state between gear and the wheel of gearbox, gear and the motor output wheel, when dragging the electric child car, waste time and energy, the damage that will lead to the motor is dragged by force, shorten its life).

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic separation type gearbox to the weak point of prior art to reach and to carry out the purpose of separating the gearbox automatically.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic separation type gearbox comprises an outer box body, a planetary gear set and a clutch mechanism, wherein the outer box body comprises a gearbox body, a gearbox cover and a clutch box body, one port of the gearbox body is fixedly connected with the gearbox cover through a bolt, the planetary gear set is arranged in the gearbox body, the planetary gear set comprises an inner gear, planetary gears, a sun gear and a planetary gear carrier, the inner gear is fixedly arranged on the inner wall of the gearbox body, one side of the planetary gear carrier is provided with three planetary rotating shafts vertical to the side wall, the planetary gears are rotatably connected to the planetary rotating shafts, the three planetary gears are simultaneously meshed with the inner gear, the middle parts of the three planetary gears are simultaneously meshed with the sun gear, one side of the sun gear is connected with a reducer input shaft through a flat key, the middle part of the other side, far away from the planetary gears, of the, the clutch box body is fixedly connected with the gearbox body through bolts, the middle of one side wall, far away from the gearbox body, of the clutch box body is rotatably connected with a main input shaft, the main input shaft and the input shaft of the speed reducer are coaxially arranged, and a clutch mechanism is connected between the main input shaft and the input shaft of the speed reducer.

Preferably, the inner wall of the gearbox body is integrally formed with a support plate, the input shaft of the speed reducer penetrates through the middle of the support plate and is rotatably connected with the support plate, the output shaft of the speed reducer penetrates through the middle of the box cover and is rotatably connected with the box cover.

Preferably, the clutch mechanism comprises fixed teeth and movable teeth, the fixed teeth are welded and fixed with the end portion of the input shaft of the speed reducer, one end, close to the fixed teeth, of the main input shaft is a spline shaft portion, and the movable teeth are connected to the spline shaft portion in a sliding mode.

Preferably, the shaft end of the spline shaft portion is inserted in the middle of the fixed teeth, and a shaft sleeve is arranged at the joint of the shaft end of the spline shaft portion and the fixed teeth.

Preferably, the outer wall of the spline shaft part is provided with a helical spline, and the spline of the outer wall of the spline shaft part is in sliding connection with the middle of the movable gear in a matching manner.

Preferably, one side of the fixed teeth and one side of the movable teeth, which are close to each other, are provided with tooth rings which are engaged with each other, and the engaging teeth of the tooth rings are trapezoidal sawteeth.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, when the power equipment stops providing power for the main input shaft, the rotating speed of the main input shaft is reduced, and the rotating speed of the input shaft of the speed reducer is still kept unchanged at the moment when the main input shaft is reduced, so that a rotating speed difference exists between the fixed teeth and the movable teeth, and the movable teeth are separated from the fixed teeth, so that the torque can not be transmitted to the main input shaft when the output shaft of the speed reducer is rotated, namely, the motor is well protected, and the driving of the output shaft of the speed reducer is labor-saving;

2. the utility model discloses in, the tooth ring that fixed tooth and movable tooth mesh mutually, the meshing tooth be trapezoidal sawtooth, guarantee to mesh steadily between fixed tooth and the movable tooth, break away from rapidly.

Drawings

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

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

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: the transmission comprises a transmission case body 1, a case cover 2, a clutch case body 3, a planetary gear set 4, an internal gear 5, a planet gear 6, a sun gear 7, a planet gear carrier 8, a reducer output shaft 9, a reducer input shaft 10, a supporting plate 11, a clutch mechanism 12, fixed teeth 13, movable teeth 14, a main input shaft 15 and a spline shaft part 151.

Detailed Description

Referring to fig. 1 to 3, the present invention provides a technical solution: an automatic separation type gearbox comprises an outer box body, a planetary gear set 4 and a clutch mechanism 12, wherein the outer box body comprises a gearbox body 1, a box cover 2 and a clutch box body 3, one port of the gearbox body 1 is fixedly connected with the box cover 2 through a bolt, the planetary gear set 4 is arranged in the gearbox body 1, the planetary gear set 4 comprises an inner gear 5, planetary gears 6, a sun gear 7 and a planetary gear carrier 8, the inner gear 5 is fixedly arranged on the inner wall of the gearbox body 1, one side of the planetary gear carrier 8 is provided with three planetary rotating shafts vertical to the side wall, the planetary gears 6 are rotatably connected on the planetary rotating shafts, the three planetary gears 6 are simultaneously meshed with the inner gear 5, the middle parts of the three planetary gears 6 are simultaneously meshed with the sun gear 7, one side of the sun gear 7 is connected with a reducer input shaft 10 through a flat key, a support plate 11 is integrally formed on the inner wall, and reduction gear input shaft 10 and backup pad 11 rotate to be connected, and planet wheel carrier 8 keeps away from the opposite side middle part that is equipped with planet wheel 6 and welds reduction gear output shaft 9, and reduction gear output shaft 9 runs through along the middle part of case lid 2, and reduction gear output shaft 9 rotates with case lid 2 and is connected, when reduction gear input shaft 10 conduction moment of torsion, carries out the speed reduction and increases the turn round through planetary gear set 4 inside the gearbox body 1, is derived the moment of torsion by reduction gear output shaft 9 at last, acts on the moving part.

Referring to fig. 1 and 2, a clutch housing 3 is disposed at the other end of the transmission housing 1 away from the case cover 2, the clutch housing 3 is fixedly connected to the transmission housing 1 through bolts, a main input shaft 15 is rotatably connected to the middle of a side wall of the transmission housing 3 away from the transmission housing 1, the main input shaft 15 and the reducer input shaft 10 are coaxially disposed, and a clutch mechanism 12 is connected between the main input shaft 15 and the reducer input shaft 10.

Referring to fig. 2 and 3, the clutch mechanism 12 includes a fixed gear 13 and a movable gear 14, the fixed gear 13 is welded and fixed to an end of the input shaft 10 of the speed reducer, a spline shaft 151 is disposed at an end of the main input shaft 15 near the fixed gear 13, a shaft end of the spline shaft 151 is inserted into a middle portion of the fixed gear 13 to support an end of the spline shaft 151, a sleeve is disposed at a connection portion between the shaft end of the spline shaft 151 and the fixed gear 13 to reduce wear caused by rotation between the shaft end of the spline shaft 151 and the fixed gear 13, a helical spline is disposed on an outer wall of the spline shaft 151, the spline shaft 151 is connected to the movable gear 14 through the spline, a toothed ring engaged with the fixed gear 13 and the movable gear 14 is disposed at a side near the fixed gear 13 and the movable gear 14, when the main input shaft 15 is connected to an output shaft of the power plant, the main input shaft 15 instantaneously rotates, and the, the movable teeth 14 are guided to one side close to the fixed teeth 13 until the fixed teeth 13 are meshed with tooth rings arranged on the movable teeth 14, so that torque is transmitted to the input shaft 10 of the speed reducer by the main input shaft 15, the meshing teeth of the tooth rings are trapezoidal sawteeth, stable meshing and quick disengaging between the fixed teeth 13 and the movable teeth 14 are guaranteed, when power equipment stops providing power for the main input shaft 15, the rotating speed of the main input shaft 15 is reduced, the rotating speed of the input shaft 10 of the speed reducer is kept unchanged at the moment of reduction of the main input shaft 15, so that a rotating speed difference exists between the fixed teeth 13 and the movable teeth 14, and at the moment, the movable teeth 14 are disengaged from the fixed teeth 13, so that when the output shaft 9 of the speed reducer rotates, the torque cannot be transmitted to the main input shaft 15, namely, the motor is well protected, and the output shaft 9 of the speed reducer is labor-saving.

The working principle is as follows: the utility model discloses during operation, when main input shaft 15 is connected with power equipment's output shaft, main input shaft 15 rotates in the twinkling of an eye, is spiral helicine spline effect at spline axial region 151 down, with movable tooth 14 to being close to one side guide of fixed tooth 13, until fixed tooth 13 meshes with the tooth ring that movable tooth 14 established mutually, thereby realize main input shaft 15 with the transmission of the moment of torsion to reduction gear input shaft 10, when reduction gear input shaft 10 conducts the moment of torsion, carry out the speed reduction through planetary gear set 4 inside gearbox body 1 and increase the turn round, at last by reduction gear output shaft 9 with the transmission of the moment of torsion, act on the moving part; when the power equipment stops providing power for the main input shaft 15, the rotating speed of the main input shaft 15 is reduced, and the rotating speed of the input shaft 10 of the speed reducer is still unchanged at the moment when the main input shaft 15 is reduced, so that a rotating speed difference exists between the fixed teeth 13 and the movable teeth 14, and the movable teeth 14 are separated from the fixed teeth 13, so that torque cannot be transmitted to the main input shaft 15 when the output shaft 9 of the speed reducer rotates, namely, the motor is well protected, and the output shaft 9 of the speed reducer is driven more laborsavingly.

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 and their equivalents.

Claims

1. An automatic separation type transmission comprises an outer box body, a planetary gear set (4) and a clutch mechanism (12), and is characterized in that: the outer box body comprises a gearbox body (1), a box cover (2) and a clutch box body (3), one end opening of the gearbox body (1) is fixedly connected with the box cover (2) through a bolt, a planetary gear set (4) is arranged inside the gearbox body (1), the planetary gear set (4) comprises an inner gear (5), planetary gears (6), a sun gear (7) and a planetary gear carrier (8), the inner gear (5) is fixedly arranged on the inner wall of the gearbox body (1), one side of the planetary gear carrier (8) is provided with three planetary rotating shafts vertical to the side wall, the planetary rotating shafts are rotatably connected with the planetary gears (6), the three planetary gears (6) are simultaneously meshed with the inner gear (5), the middle parts of the three planetary gears (6) are simultaneously meshed with the sun gear (7), one side of the sun gear (7) is connected with a reducer input shaft (10) through a flat key, the middle part of the other side, far away from the planetary gear (6, another port that is equipped with case lid (2) is kept away from in gearbox body (1) is equipped with clutch box body (3), and clutch box body (3) pass through bolt and gearbox body (1) fixed connection, and clutch box body (3) are kept away from a lateral wall middle part that is equipped with gearbox body (1) and are rotated and are connected with main input shaft (15), and main input shaft (15) and reduction gear input shaft (10) axiality set up, and are connected with clutching mechanism (12) between main input shaft (15) and reduction gear input shaft (10).

2. An automatic separation type transmission case according to claim 1, wherein: the gearbox is characterized in that a supporting plate (11) is integrally formed on the inner wall of the gearbox body (1), a speed reducer input shaft (10) penetrates through the middle of the supporting plate (11), the speed reducer input shaft (10) is rotatably connected with the supporting plate (11), a speed reducer output shaft (9) penetrates through the middle of the gearbox cover (2), and the speed reducer output shaft (9) is rotatably connected with the gearbox cover (2).

3. An automatic separation type transmission case according to claim 1, wherein: the clutch mechanism (12) comprises fixed teeth (13) and movable teeth (14), the fixed teeth (13) are welded and fixed with the end part of the input shaft (10) of the speed reducer, one end, close to the fixed teeth (13), of the main input shaft (15) is a spline shaft part (151), and the spline shaft part (151) is connected with the movable teeth (14) in a sliding mode.

4. An automatic separation type transmission case according to claim 3, wherein: the shaft end of the spline shaft part (151) is inserted in the middle of the fixed teeth (13), and a shaft sleeve is arranged at the joint of the shaft end of the spline shaft part (151) and the fixed teeth (13).

5. An automatic separation type transmission case according to claim 3, wherein: the outer wall of the spline shaft part (151) is provided with a spiral spline, and the spline of the outer wall of the spline shaft part (151) is in sliding connection with the middle of the movable gear (14) in a matched mode.

6. An automatic separation type transmission case according to claim 3, wherein: and one side of the fixed teeth (13) close to one side of the movable teeth (14) is provided with tooth rings which are engaged with each other, and the engaging teeth of the tooth rings are trapezoidal sawteeth.