CN211288626U

CN211288626U - Gear shifting driving mechanism of double-speed reducer

Info

Publication number: CN211288626U
Application number: CN201922142552.7U
Authority: CN
Inventors: 喻杨; 喻幸福
Original assignee: Hubei Hengxin Transmission Equipment Co ltd
Current assignee: Hubei Hengxin Transmission Equipment Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-18
Anticipated expiration: 2029-11-29

Abstract

The utility model provides a double speed reduction gear's actuating mechanism that shifts belongs to mechanical technical field. The speed reducer comprises a shell, an output shaft and two output wheels, wherein the output shaft is rotatably connected to the shell, the output wheels are connected to the output shaft in a sliding mode along the axis, the gear shifting driving mechanism comprises two shaft sleeves arranged on the inner side face of each output wheel, the shaft sleeves and the output wheels are connected through a plane bearing, external threads with opposite thread directions are arranged on the peripheral faces of the two shaft sleeves, the speed changing mechanism further comprises a threaded sleeve, two sections of internal threads matched with the external threads on the two shaft sleeves are arranged on the threaded sleeve, the threaded sleeve is abutted to a rotating wheel, and the rotating wheel is. The utility model has the advantages of can synchronous drive output wheel be close to or keep away from in opposite directions.

Description

Gear shifting driving mechanism of double-speed reducer

Technical Field

The utility model belongs to the technical field of machinery, a actuating mechanism shifts of double speed reduction gear is related to.

Background

The reduction gear is used extensively, and the range of application can be improved to the multi-speed ratio reduction gear, and traditional reduction gear generally adopts the single wheel meshing in order to reduce the volume, and even if the reduction gear of single wheel meshing adopts bevel gear, the stress concentration still appears easily and the lateral vibration of reduction gear causes the problem that reduction gear poor stability, noise are great.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a double speed reduction gear's actuating mechanism that shifts to the above-mentioned problem that prior art exists, the utility model aims to solve the technical problem how make two output wheel synchronous motion.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a double speed reduction gear's actuating mechanism that shifts, its characterized in that, this reduction gear include the casing, rotate the output shaft of connection on the casing and two output wheels of following axis sliding connection on the output shaft, actuating mechanism that shifts includes two axle sleeves of setting on the output wheel medial surface, be connected through flat bearing between axle sleeve and the output wheel, have screw thread opposite direction's external screw thread on two axle sleeves global, speed change mechanism still includes a thread bush, have two sections internal threads with the external screw thread fit on two axle sleeves respectively on the thread bush, the thread bush supports with a runner and leans on, the runner rotates to be connected on the casing.

Through the rotation of runner drive thread bush, the thread bush receives the effect of internal thread and external screw thread, orders about the axle sleeve and is close to or keeps away from in opposite directions, and the screw specification on two axle sleeves is the same, and only screw thread opposite direction makes two output wheels be close to each other or keep away from under the drive of thread bush simultaneously.

In the above gear shifting driving mechanism of the two-speed reducer, two ends of the threaded sleeve are respectively provided with a retaining ring extending out of the outer wall surface, and the rotating wheel part is inserted between the two retaining rings.

The setting of retaining ring ensures that the thread bush does not take place the displacement along the output shaft direction, makes the rotation of thread bush can order about two axle sleeves and remove in the output shaft axis direction.

In the above-mentioned gear shift driving mechanism of the two-speed reducer, the outer wall surface of the threaded sleeve and the outer wall surface of the rotating wheel both have friction layers.

The thread sleeve and the rotating wheel can be meshed through teeth.

In the above-mentioned gear-shifting driving mechanism of the two-speed reducer, the rotating wheel is located at the bottom of the casing.

The runner is located the casing bottom, can avoid the maloperation.

Drawings

Fig. 1 is a schematic view of the present decelerator.

In the figure, 1, a housing; 2. an input shaft; 3. an output shaft; 4. an input wheel; 41. a first-stage input gear ring; 42. a secondary input gear ring; 5. an output wheel; 51. a primary output gear ring; 52. a secondary output gear ring; 61. a shaft sleeve; 62. a threaded sleeve; 63. a rotating wheel; 64. and a retainer ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the speed reducer comprises a shell 1, an input shaft 2 rotationally connected to the shell, an output shaft 3 rotationally connected to the shell, two input wheels 4 fixed to the input shaft 2, two output wheels 5 slidably connected to the output shaft 3 along an axis, the two input wheels 4 are symmetrically distributed, the two output wheels 5 correspond to the two input wheels 4 one by one, a first-stage input gear ring 41 and a second-stage input gear ring 42 are arranged on the input wheels 4, a first-stage output gear ring 51 and a second-stage output gear ring 52 are arranged on the output wheels 5, a speed change mechanism capable of driving the two output wheels 5 to move on the output shaft 3 is arranged between the two output wheels 5, and the spacing distance between the first-stage output gear ring 51 and the second-stage output gear ring 52 on the output wheels 5 is larger than that between the first-stage input gear ring 41 and the.

The primary input gear ring 41 and the secondary output gear ring 52 on the same input gear are both positioned between the primary output gear ring 51 and the secondary output gear ring 52 on the same output wheel 5, when the primary input gear ring 41 is meshed with the primary output gear ring 51, the secondary input gear ring 42 is separated from the secondary output gear ring 52, when the secondary input gear ring 42 is meshed with the secondary output gear ring 52, the primary input gear ring 41 is separated from the primary output gear ring 51, the output wheel 5 is controlled to move on the output shaft 3 through the speed change mechanism, the meshing condition is changed, double-speed selection is realized, and the stability and the reliability of the transmitter are greatly improved through a double-wheel simultaneous meshing mode.

The primary input ring gear 41, the secondary input ring gear 42, the primary output ring gear 51, and the secondary output ring gear 52 are all tapered ring gears. The first-stage input gear ring 41 and the second-stage input gear ring 42 face to two sides of the input wheel 4, the first-stage output gear ring 51 and the second-stage output gear ring 52 face to the inner side of the output wheel 5, axial acting forces between the two input wheels 4 and the two output wheels 5 are mutually offset during transmission, and the stability and the reliability of the transmitter are improved.

The speed change mechanism comprises two shifting pieces hinged on the shell, and the inner ends of the shifting pieces are abutted against the side wall of the output wheel 5.

The speed change mechanism comprises two shaft sleeves 61 arranged on the inner side face of the output wheel 5, the shaft sleeves 61 are connected with the output wheel 5 through a plane bearing, external threads with opposite thread directions are arranged on the peripheral surfaces of the two shaft sleeves 61, the speed change mechanism further comprises a thread sleeve 62, two sections of internal threads matched with the external threads on the two shaft sleeves 61 are arranged on the thread sleeve 62, the thread sleeve 62 is abutted against a rotating wheel 63, and the rotating wheel 63 is rotatably connected onto the shell. The rotating wheel 63 drives the threaded sleeve 62 to rotate, the threaded sleeve 62 drives the shaft sleeve 61 to move towards or away from each other under the action of the internal thread and the external thread, when the primary input gear ring 41 is meshed with the primary output gear ring 51, the secondary input gear ring 42 is separated from the secondary output gear ring 52, and when the secondary input gear ring 42 is meshed with the secondary output gear ring 52, the primary input gear ring 41 is separated from the primary output gear ring 51.

The threaded sleeve 62 has a retainer 64 extending from the outer wall surface at each end thereof, and the runner 63 is partially interposed between the retainers 64. The retainer ring 64 is arranged to ensure that the threaded sleeve 62 does not displace in the direction of the output shaft 3, so that the rotation of the threaded sleeve 62 can drive the two bushings 61 to move in the axial direction of the output shaft 3.

The outer wall surface of the threaded sleeve 62 and the outer wall surface of the runner 63 are provided with friction layers. The thread sleeve 62 and the rotating wheel 63 can be meshed through teeth.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A gear shifting driving mechanism of a double-speed reducer is characterized by comprising a shell (1), an output shaft (3) rotatably connected to the shell (1) and two output wheels (5) connected to the output shaft (3) in a sliding mode along an axis, the gear shifting driving mechanism comprises two shaft sleeves (61) arranged on the inner side faces of the output wheels (5), the shaft sleeves (61) are connected with the output wheels (5) through plane bearings, external threads with opposite thread directions are arranged on the peripheral faces of the two shaft sleeves (61), a speed change mechanism capable of driving the two output wheels (5) to move on the output shaft (3) is arranged between the two output wheels (5), the speed change mechanism further comprises a threaded sleeve (62), two sections of internal threads matched with the external threads on the two shaft sleeves (61) are arranged on the threaded sleeve (62), and the threaded sleeve (62) is abutted to one rotating wheel (63), the rotating wheel (63) is rotatably connected to the shell (1).

2. Gear change drive mechanism in a two-speed reducer according to claim 1, characterised in that said threaded sleeve (62) has at each end a collar (64) projecting from the outer wall, said runner (63) being partially interposed between the two collars (64).

3. Gear shift driving mechanism in two speed reducer according to claim 1 or 2 characterized in that the outer wall of the threaded sleeve (62) and the outer wall of the wheel (63) have friction layers.

4. Gear shift driving mechanism in a two-speed reducer according to claim 1 or 2, characterized in that the wheels (63) are located at the bottom of the housing.