CN217583041U

CN217583041U - Compact gear box structure

Info

Publication number: CN217583041U
Application number: CN202221040358.3U
Authority: CN
Inventors: 周洪文; 廖志滨; 王兴东; 王志忠
Original assignee: Xiamen Yidian Intelligent Technology Co Ltd
Current assignee: Xiamen Yidian Intelligent Technology Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-10-14
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a compact gear box structure, including the gear box main part, be equipped with the motor in the inner chamber of gear box main part, follow motor pivoted motor gear and drive gear group, drive gear group includes first gear, a plurality of intermediate level gear and final gear, the first gear with motor gear meshes mutually, the output shaft of final gear stretches out the gear box main part, the output shaft of final gear is located the one end of the dead axle that one end and a coaxial arrangement in the gear box main part were arranged is connected, be equipped with on the dead axle at least one of them gear in the plurality of intermediate level gear, the other end of dead axle with the tank wall of gear box main part cooperatees. The utility model discloses can make the gear box structure compacter to the assembly is simpler, easy.

Description

Compact gear box structure

Technical Field

The utility model relates to a compact gear box structure.

Background

An existing gear box structure generally comprises a gear box main body, wherein a motor, a motor gear and a transmission gear set which rotate along with the motor are arranged in an inner cavity of the gear box main body, the transmission gear set comprises a first-stage gear, a plurality of middle-stage gears and a last-stage gear, the first-stage gear is meshed with the motor gear, and an output shaft of the last-stage gear extends out of the gear box main body. Because the output shaft of the final gear is stressed greatly, the output shaft needs to be positioned reliably, and the inner end and the middle part of the output shaft of the final gear are positioned by arranging two positioning parts on a gear box main body at present. One of the positioning portions that positions the middle portion of the output shaft of the final stage gear is generally a through hole provided in a case wall of the gear case main body, through which the output shaft passes out of the gear case main body. In order to reliably position the inner end of the output shaft located in the gear box main body, a partition plate is usually disposed in the hollow inner cavity of the gear box main body, and a positioning hole is disposed on the partition plate as another positioning portion for positioning the inner end of the output shaft of the final gear. And because the intensity of location portion needs enough big, therefore the baffle needs certain thickness, and the space that leads to the baffle to occupy the gear box main part inner chamber is great to also lead to the inner structure of gear box main part more complicated owing to set up the baffle, be unfavorable for the shaping of gear main part, also make each gear of assembly more difficult simultaneously.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a compact gearbox structure, it can make the gearbox structure compacter to the assembly is simpler, easy.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a compact gear box structure, includes the gear box main part, be equipped with the motor in the inner chamber of gear box main part, follow motor gear and drive gear group that the motor rotated, drive gear group includes first gear, a plurality of intermediate gear and final gear, first gear with motor gear meshes mutually, the output shaft of final gear stretches out the gear box main part, the output shaft of final gear is located one end in the gear box main part is connected with the one end of the dead axle that a coaxial arrangement, be equipped with on the dead axle at least one of them gear in a plurality of intermediate gear, the other end of dead axle with the tank wall of gear box main part cooperatees.

In a preferred embodiment, an end of the output shaft of the final stage gear located in the gear box main body is provided with an axially extending shaft hole, and an end of the fixed shaft is inserted into the shaft hole.

In a preferred embodiment, a first mating hole is formed in one side of the gear box body, through which the output shaft of the final stage gear extends, the compact gear box structure further includes a supporting plate disposed in the gear box body and attached to one side of the gear box body, at which the first mating hole is formed, the supporting plate is provided with a second mating hole, through which the output shaft of the final stage gear extends, corresponding to the first mating hole, and the supporting plate is configured to support the output shaft in a radial direction.

In a preferred embodiment, the supporting plate is further provided with a third mating hole, a rotating shaft of the intermediate gear, which is mated with the final gear, passes through the third mating hole, and the rotating shaft is parallel to the fixed shaft.

In a preferred embodiment, the rotation axes of the motor gear, the first stage gear, the last stage gear and at least one intermediate stage gear are parallel.

In a preferred embodiment, the intermediate stage gear is a duplicate gear.

In a preferred embodiment, the first-stage gear is provided with a clutch structure, and when the torque of the output shaft is greater than a preset value, the clutch structure is in a separation state, so that the transmission between the motor gear and the output shaft is disconnected.

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

the utility model discloses a set up a dead axle in the gear box main part, arrange the output shaft of final stage gear with this dead axle is coaxial, and be located the one end of gear box main part with the output shaft of final stage gear (being the inner of the output shaft of final stage gear) and be connected with the one end of this dead axle, be equipped with at least one of them gear among a plurality of intermediate gear on the dead axle (being equipped with on the dead axle around its pivoted intermediate gear promptly), the other end of dead axle cooperatees with the tank wall of gear box main part, thereby the baffle that sets up in the gear box main part among the prior art has been saved, and do not influence the steady operation of the output shaft of final stage gear, gear box main part inner structure is simple, and then make whole gear box structure compacter, the installation is simpler and easy.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is an exploded perspective view of a compact gearbox structure according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a compact gearbox arrangement according to an embodiment of the present invention;

fig. 3 is a perspective cross-sectional view of a compact gearbox arrangement according to an embodiment of the present invention;

in the figure:

1 a gear box body; 11 a first shaft hole; 12 a first mating hole; 2, a motor; 3, a motor gear; 4, a first-stage gear; 5 an intermediate gear; 6 final stage gear; 61 output shaft of final gear; 611 second shaft bore; 7, fixing a shaft; 8, supporting plates; 81 second mating holes; 82 a third mating hole; 9 a rotating shaft.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 3, the utility model discloses a compact gearbox structure of embodiment, including gearbox main part 1, be equipped with motor 2, along with motor 2 pivoted motor gear 3 and drive gear group in the inner chamber of gearbox main part 1. The transmission gear set comprises a first-stage gear 4, a plurality of middle-stage gears 5 and a last-stage gear 6, the first-stage gear 4 is meshed with the motor gear 3, and an output shaft 61 of the last-stage gear 6 extends out of the gear box main body 1. One end (namely the inner end of the output shaft 61) of the output shaft 61 of the final-stage gear 6, which is positioned in the gear box main body 1, is connected with one end of a fixed shaft 7 which is coaxially arranged, at least one gear of a plurality of intermediate-stage gears 5 is arranged on the fixed shaft 7, and the other end of the fixed shaft 7 is matched with the box wall of the gear box main body 1.

Specifically, in the present embodiment, the top wall of the case wall of the gear case body 1 is provided with a first shaft hole 11, and the top end of the fixed shaft 7 is inserted into the first shaft hole 11. The fixed shaft 7 is inserted into one of the intermediate gears 5, and of course, the fixed shaft 7 may also be inserted into 2 gears or 3 gears of the intermediate gears 5.

In this embodiment, an end of the output shaft 61 of the final stage gear 6 located inside the gear housing body 1 is provided with a second shaft hole 611 extending in the axial direction, and the bottom end of the fixed shaft 7 is inserted into the second shaft hole 611.

In this embodiment, a first mating hole 12 through which the output shaft 61 of the final stage gear 6 extends is formed in one side of the gear box main body 1, the compact gear box structure further includes a supporting plate 8 which is arranged in the gear box main body 1 and is attached to one side of the gear box main body 1, where the first mating hole 12 is formed in the supporting plate 8, a second mating hole 81 through which the output shaft 61 of the final stage gear 6 extends is formed in the supporting plate 8 corresponding to the first mating hole 12, and the supporting plate 8 is used for supporting the output shaft 61 in the radial direction. The provision of the support plate 8 makes the positioning of the output shaft 61 more reliable.

In this embodiment, the supporting plate 8 is further provided with a third mating hole 82, the rotating shaft 9 of the intermediate gear 5, which is mated with the final gear 6, is inserted into the third mating hole 82, and the rotating shaft 9 is parallel to the fixed shaft 7.

In this embodiment, the rotation axes of the motor gear 3, the primary gear 4, the final gear 6, and the at least one intermediate gear 5 are parallel.

In the present embodiment, the intermediate-stage gear 5 is a duplicate gear. The primary gear 4 is provided with a clutch structure, and the clutch structure is in a separation state when the torque of the output shaft 61 is greater than a preset value, so that the transmission between the motor gear 3 and the output shaft 61 is disconnected, and the motor 2 can be protected. The clutch structure may be any conventional structure, and will not be described in detail herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A compact gearbox structure comprises a gearbox main body, wherein a motor, a motor gear rotating along with the motor and a transmission gear set are arranged in an inner cavity of the gearbox main body, the transmission gear set comprises a first-stage gear, a plurality of middle-stage gears and a last-stage gear, the first-stage gear is meshed with the motor gear, and an output shaft of the last-stage gear extends out of the gearbox main body.

2. The compact gearbox structure of claim 1, wherein an end of the output shaft of said final gear within said gearbox body is provided with an axially extending shaft hole into which an end of said dead axle is inserted.

3. The compact gearbox structure according to claim 1, wherein a first mating hole is provided on one side of the gearbox body for the output shaft of the final gear to extend out, the compact gearbox structure further comprises a support plate provided in the gearbox body and attached to the side of the gearbox body where the first mating hole is provided, a second mating hole for the output shaft of the final gear to pass through is provided on the support plate corresponding to the first mating hole, and the support plate is used for supporting the output shaft in a radial direction.

4. The compact gear box structure as claimed in claim 3, wherein the supporting plate is further provided with a third mating hole, the rotating shaft of the intermediate gear mated with the final gear is inserted into the third mating hole, and the rotating shaft is parallel to the fixed shaft.

5. The compact gearbox structure of claim 1, wherein axes of rotation of said motor gear, said first stage gear, said last stage gear, at least one of said intermediate stage gears are parallel.

6. The compact gearbox structure of claim 1, wherein said intermediate stage gear is a duplicate gear.

7. The compact gearbox structure according to claim 1, wherein the primary gear is provided with a clutch structure, and the clutch structure is in a separation state when the torque of the output shaft is larger than a preset value so as to disconnect the transmission between the motor gear and the output shaft.