CN219067981U

CN219067981U - Vibration-proof noise-reduction transmission structure

Info

Publication number: CN219067981U
Application number: CN202221920029.8U
Authority: CN
Inventors: 王乐; 张富平; 陈诚; 杜航超
Original assignee: A BETTER ELECTRICAL MANUFACTURING (SHENZHEN) CO LTD
Current assignee: A BETTER ELECTRICAL MANUFACTURING (SHENZHEN) CO LTD
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-05-23
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a vibration-proof noise-reduction transmission structure, which comprises a motor assembly and a gear box assembly, wherein the motor assembly comprises a motor shell and a motor shaft, and a first bearing for supporting the motor shaft is arranged between the motor shell and the motor shaft; the gear box assembly comprises a gear box body and a driving shaft, and a second bearing for supporting the driving shaft is arranged between the gear box body and the driving shaft; the motor shaft is in transmission connection with the driving shaft; a first rubber piece is arranged between the first bearing and the motor shell, and the first rubber piece is sleeved on the first bearing; a second rubber piece is arranged between the second bearing and the gear box body, and the second rubber piece is sleeved on the second bearing. According to the utility model, rubber is added at the contact position of the motor shell, the gear box body and the bearing outer ring, so that direct friction is avoided, vibration and noise are prevented, transmission power is more stable and reliable, and the service life is prolonged.

Description

Vibration-proof noise-reduction transmission structure

Technical Field

The utility model relates to the technical field of mechanical transmission, in particular to a vibration-proof noise-reduction transmission structure.

Background

The motor and the gear box are important components widely applied in mechanical transmission, the motor is used as a power source, and the gear box is arranged at the output shaft end of the motor to reduce the output rotating speed of the motor. The motor shaft is generally fixed with the motor shell and the gear box shell through interference fit of the bearing inner ring. However, the outer ring of the bearing is loose fit with the outer shell, and during operation, relative movement and friction are caused due to gaps, so that vibration and noise are generated, and under the condition of long-time operation, the gaps are larger due to mutual friction, so that the noise and vibration are increased continuously.

Disclosure of Invention

In order to solve the problems, the utility model provides a vibration-proof noise-reduction transmission structure which has the advantages of good noise reduction effect and stable operation.

In order to achieve the above purpose, the technical scheme adopted by the utility model is to provide a vibration-proof noise-reduction transmission structure, which comprises a motor assembly and a gear box assembly, wherein the motor assembly comprises a motor shell and a motor shaft, and a first bearing for supporting the motor shaft is arranged between the motor shell and the motor shaft; the gear box assembly comprises a gear box body and a driving shaft, and a second bearing for supporting the driving shaft is arranged between the gear box body and the driving shaft; the motor shaft is in transmission connection with the driving shaft; a first rubber piece is arranged between the first bearing and the motor shell, and the first rubber piece is sleeved on the first bearing; a second rubber piece is arranged between the second bearing and the gear box body, and the second rubber piece is sleeved on the second bearing.

As a preferred scheme, the motor assembly further comprises a stator core and a rotor core which are arranged in the shell, wherein the rotor core is sleeved on the motor shaft, and the rotor core is suitable for being inserted into the stator core.

As a preferred scheme, the motor housing comprises a cylinder body, an upper end cover and a lower end cover which are connected to two ends of the cylinder body, and two ends of a motor shaft are supported on the upper end cover and the lower end cover through first bearings.

As a preferable scheme, the upper end cover and the lower end cover are in sealing connection with the cylinder body through a third rubber piece.

As a preferred scheme, the driving shaft comprises a vertically arranged auxiliary shaft and an output shaft, the auxiliary shaft is in transmission connection with the motor shaft through a connecting piece, and the output shaft is in meshed transmission with the auxiliary shaft through a gear set.

As a preferable scheme, the gear set comprises a transmission gear sleeved on the output shaft and a spiral gear arranged on the auxiliary shaft, and the spiral gear is meshed with the transmission gear.

As a preferable scheme, the gear box assembly further comprises a gear box cover, and the gear box cover is in sealing connection with the gear box body through a fourth rubber piece.

As a preferable scheme, two ends of the output shaft respectively penetrate through the gear box body and the gear box cover.

As a preferred solution, the two ends of the auxiliary shaft are supported in the gearbox housing by means of second bearings, respectively.

The utility model has the beneficial effects that:

according to the utility model, the rubber piece is added at the joint of the transmission mechanism, so that when the motor shaft or the driving shaft rotates, the bearing is stressed, and the effects of shielding vibration and reducing noise are achieved through the filtration of the rubber piece. In addition, because the first bearing and the motor shell are assembled by extrusion of the first rubber piece, the second bearing and the gear box body are assembled by extrusion of the second rubber piece, the bearing and the shell are not in direct contact, abrasion is avoided, vibration and noise are prevented, transmission power is more stable and reliable, stability and reliability of product performance are improved, and service life is prolonged.

Drawings

Fig. 1 is a perspective view of a vibration and noise preventing transmission structure of the present utility model.

Fig. 2 is an exploded schematic view of the vibration and noise preventing transmission structure of the present utility model.

Fig. 3 is a schematic cross-sectional view of the vibration and noise damping transmission structure of the present utility model taken along the axis of the motor shaft.

FIG. 4 is a schematic cross-sectional view of the gear box assembly of the present utility model taken along the output shaft axis.

Reference numerals illustrate: the motor assembly 10, the cylinder 11, the motor shaft 12, the first bearing 13, the first rubber piece 14, the stator core 15, the rotor core 16, the upper end cover 17, the lower end cover 18 and the third rubber piece 19; the gear box assembly 20, the gear box body 21, the gear box cover 22, the second bearing 23, the second rubber member 24, the auxiliary shaft 25, the output shaft 26, the transmission gear 27, the spiral gear 28 and the fourth rubber member 29; the coupling 30.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 4, the present utility model relates to a vibration-proof and noise-reducing transmission structure, which comprises a motor assembly 10 and a gear box assembly 20, wherein the motor assembly 10 comprises a motor housing and a motor shaft 12, and a first bearing 13 for supporting the motor shaft 12 is arranged between the motor housing and the motor shaft 12; the gear box assembly 20 comprises a gear box body 21 and a driving shaft, and a second bearing 23 for supporting the driving shaft is arranged between the gear box body 21 and the driving shaft; the motor shaft 12 is in transmission connection with the driving shaft; a first rubber piece 14 is arranged between the first bearing 13 and the motor shell, and the first rubber piece 14 is sleeved on the first bearing 13; a second rubber member 24 is disposed between the second bearing 23 and the gear housing 21, and the second rubber member 24 is sleeved on the second bearing 23. The first bearing 13 and the motor housing are assembled by extrusion through the first rubber member 14, the second bearing 23 and the gear housing 21 are assembled by extrusion through the second rubber member 24, the bearing and the housing are not in direct contact, abrasion is avoided, vibration and noise are prevented, transmission power is stable and reliable, stability and reliability of product performance are improved, and service life is prolonged.

The motor assembly 10 further comprises a stator core 15 and a rotor core 16 which are arranged in the shell, wherein the rotor core 16 is sleeved on the motor shaft 12, and the rotor core 16 is suitable for being inserted into the stator core 15; the motor housing comprises a cylinder 11, an upper end cover 17 and a lower end cover 18 which are connected to two ends of the cylinder 11, and two ends of a motor shaft 12 are supported on the upper end cover 17 and the lower end cover 18 through a first bearing 13; the upper end cover 17 and the lower end cover 18 are in sealing connection with the cylinder 11 through a third rubber piece 19. The third rubber piece 19 is added to the connecting part of the motor shell, so that the dustproof and waterproof capacity of the motor assembly 10 can be improved, and a better sealing effect can be achieved, so that noise is prevented from being transmitted outwards.

The two ends of the motor shaft 12 penetrate through the upper end cover 17 and the lower end cover 18, and the two ends of the motor shaft 12 are respectively supported by the upper end cover 17 and the lower end cover 18 through the first bearing 13. Specifically, the upper end cover 17 and the lower end cover 18 are provided with a convex mounting portion where the first bearing 13 is mounted; the convex mounting part is provided with a mounting hole, and two ends of the motor shaft 12 penetrate through the mounting hole.

In the gearbox assembly 20, the drive shaft includes a vertically disposed auxiliary shaft 25 and an output shaft 26, the auxiliary shaft 25 being drivingly coupled to the motor shaft 12 by a coupling 30, the output shaft 26 being drivingly engaged with the auxiliary shaft 25 by a gear set. The method comprises the following steps: the gear set includes a transmission gear 27 fitted over the output shaft 26 and a helical gear 28 provided on the counter shaft 25, the helical gear 28 being meshed with the transmission gear 27.

The gear box assembly 20 further comprises a gear box cover 22, the gear box cover 22 is in sealing connection with the gear box body 21 through a fourth rubber piece 29, the dustproof and waterproof performance of the gear box assembly 20 is improved through the fourth rubber piece 29, and a better sealing effect is achieved so as to prevent noise from being transmitted outwards. Both ends of the output shaft 26 penetrate through the gear case body 21 and the gear case cover 22, respectively; the two ends of the auxiliary shaft 25 are supported in the gear housing 21 through second bearings 23, respectively.

The motor housing, the gear housing 21 (hereinafter referred to as the casing) and the bearings (referred to as the first bearing 13 and the second bearing 23) are metal parts, and during ordinary assembly, the bearing outer ring is connected with the casing to form a gap connection, and long-time working and mutual friction can lead to that the hole of the casing for placing the bearing can be worn seriously along with the increase of working time, so that the gap can become large, and the noise and vibration caused by the gap fit are continuously increased, so that the performance is unstable due to the structural defect of vibration noise.

By adding rubber parts (the first rubber part 14 and the second rubber part 24) between the bearing and the casing, direct friction is avoided, vibration and noise are prevented, transmission power is more stable and reliable, and service life is prolonged.

The first rubber member 14, the second rubber member 24, the third rubber member 19 and the fourth rubber member 29 may be designed into various shapes, such as rubber rings and rubber pads, according to practical use requirements and purposes. In the present embodiment, the first rubber member 14 is a rubber pad, and the second rubber member 24, the third rubber member 19, and the fourth rubber member 29 are rubber rings.

The above embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims

1. The vibration-proof noise-reduction transmission structure comprises a motor assembly and a gear box assembly, wherein the motor assembly comprises a motor shell and a motor shaft, and a first bearing for supporting the motor shaft is arranged between the motor shell and the motor shaft; the gear box assembly comprises a gear box body and a driving shaft, and a second bearing for supporting the driving shaft is arranged between the gear box body and the driving shaft; the motor shaft is in transmission connection with the driving shaft; the method is characterized in that: a first rubber piece is arranged between the first bearing and the motor shell, and the first rubber piece is sleeved on the first bearing; a second rubber piece is arranged between the second bearing and the gear box body, and the second rubber piece is sleeved on the second bearing.

2. The vibration and noise preventing transmission structure according to claim 1, wherein: the motor assembly further comprises a stator core and a rotor core which are arranged in the shell, the rotor core is sleeved on the motor shaft, and the rotor core is suitable for being inserted into the stator core.

3. The vibration and noise preventing transmission structure according to claim 2, characterized in that: the motor shell comprises a cylinder body, an upper end cover and a lower end cover which are connected to the two ends of the cylinder body, and the two ends of a motor shaft are supported on the upper end cover and the lower end cover through first bearings.

4. A vibration and noise damping transmission structure according to claim 3, characterized in that: the upper end cover and the lower end cover are in sealing connection with the cylinder body through a third rubber piece.

5. The vibration and noise preventing transmission structure according to claim 1, wherein: the driving shaft comprises a vertical auxiliary shaft and an output shaft, the auxiliary shaft is in transmission connection with the motor shaft through a connecting piece, and the output shaft is in meshed transmission with the auxiliary shaft through a gear set.

6. The vibration and noise preventing transmission structure according to claim 5, wherein: the gear set comprises a transmission gear sleeved on the output shaft and a spiral gear arranged on the auxiliary shaft, and the spiral gear is meshed with the transmission gear.

7. The vibration and noise reduction transmission structure according to claim 6, wherein: the gear box assembly further comprises a gear box cover, and the gear box cover is in sealing connection with the gear box body through a fourth rubber piece.

8. The vibration and noise reduction transmission structure according to claim 7, wherein: the two ends of the output shaft respectively penetrate through the gear box body and the gear box cover.

9. The vibration and noise reduction transmission structure according to claim 8, wherein: the two ends of the auxiliary shaft are respectively supported in the gear box body through second bearings.