Structure for reducing noise of motor

Abstract

The utility model discloses a structure used for reducing motor noise, comprising a casing, an end cover fixedly connected on the casing, a first fixing ring fixedly connected on the end cover, a noise reduction assembly installed on the first fixing ring, the noise reduction assembly comprising an elastic shaft sleeve and a wear-resistant shaft sleeve, the elastic shaft sleeve being installed on the first fixing ring, the wear-resistant shaft sleeve being installed on the elastic shaft sleeve, and the wear-resistant shaft sleeve being installed on the wear-resistant shaft sleeve. The wear-resistant shaft sleeve is sleeved in the elastic shaft sleeve, and a motor shaft is sleeved in the wear-resistant shaft sleeve; according to the noise reduction assembly, the elastic shaft sleeve and the wear-resistant shaft sleeve which are made of soft materials are combined, an existing bearing made of hard materials is replaced, and the elastic shaft sleeve and the wear-resistant shaft sleeve can be in flexible contact, so that noise generated in the operation process of the motor is effectively reduced; in addition, the elastic shaft sleeve and the wear-resistant shaft sleeve have elasticity, so that the disassembly and assembly processes of the elastic shaft sleeve and the wear-resistant shaft sleeve are very simple and easy, and the assembly and maintenance efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a structure for reducing motor noise. BACKGROUND

[0002] In the structure of the motor, the bearing plays a key role in supporting the motor shaft. In the prior art, the bearing of the motor is mostly made of hard material. Since the rigid contact between the various parts of the bearing structure, there is a lot of noise in the motor during operation, which seriously affects the use experience of the motor. In addition, the inner ring of the rigid bearing needs to be interference fitted with the motor shaft, and the outer ring needs to be interference fitted with the bearing seat, so the disassembly and assembly are extremely inconvenient, which seriously affects the efficiency of assembly and maintenance. SUMMARY

[0003] The utility model aims at providing a structure for reducing motor noise to solve the problems in the background art.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: a structure for reducing motor noise, comprising a shell, the shell is fixedly connected with an end cover, the end cover is fixedly connected with a first fixed ring, a noise reduction assembly is installed on the first fixed ring, the noise reduction assembly comprises an elastic shaft sleeve and a wear-resistant shaft sleeve, the elastic shaft sleeve is installed on the first fixed ring, the wear-resistant shaft sleeve is sleeved in the elastic shaft sleeve, and a motor shaft is sleeved in the wear-resistant shaft sleeve.

[0005] Preferably, a groove is formed in the outer wall of the elastic shaft sleeve, and the first fixed ring is sleeved in the groove. Two annular grooves are formed in the inner wall of the elastic shaft sleeve, and a circular table is arranged at both ends of the elastic shaft sleeve.

[0006] Preferably, a first protruding ring is fixedly connected to the position corresponding to the annular groove on the outer wall of the wear-resistant shaft sleeve, and the first protruding ring is sleeved in the annular groove. A plurality of second protruding rings are uniformly distributed on the inner wall of the wear-resistant shaft sleeve, and the second protruding rings are sleeved on the motor shaft. A dust skirt is fixedly connected to both ends of the wear-resistant shaft sleeve.

[0007] Preferably, an oil injection groove is formed in the wear-resistant shaft sleeve, and a plurality of oil outlet holes are connected to the oil injection groove in a lead-through manner, and the oil outlet holes are arranged between two adjacent second protruding rings.

[0008] Preferably, a plurality of mounting holes are uniformly distributed on the first fixed ring, and screws are installed in the mounting holes. Threaded holes are formed in the end cover corresponding to the positions of the mounting holes, and the screws are screw-connected in the threaded holes.

[0009] Preferably, a sleeve is fixedly connected to the first fixed ring, and a second fixed ring is fixedly connected to the sleeve, and the second fixed ring and the sleeve are sleeved in the groove.

[0010] The utility model provides a structure for reducing motor noise, its advantage lies in: the utility model discloses the noise reduction subassembly adopts the elastic shaft sleeve of soft material and the combination of wear -resistant shaft sleeve, has replaced the bearing of existing hard material, and the elastic shaft sleeve and wear -resistant shaft sleeve can realize flexible contact, thereby effectively reduce the noise produced in the motor operation process, wherein, the use of wear -resistant shaft sleeve greatly enhances the wear resistance of the overall structure, thereby significantly prolongs the service life of the noise reduction subassembly, in addition, the elastic shaft sleeve and wear -resistant shaft sleeve all have elasticity, which makes their dismounting process very simple and easy, greatly improves the assembly and maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0012] Figure 1 It is the overall main view cut structure schematic diagram of the utility model;

[0013] Figure 2 It is the elastic shaft sleeve three-dimensional cut structure schematic diagram of the utility model;

[0014] Figure 3 It is the wear -resistant shaft sleeve three-dimensional cut structure schematic diagram of the utility model.

[0015] In the drawing: 1, the casing;11, end cover;12, threaded hole;13, first fixed ring;14, mounting hole;15, screw;16, sleeve;17, second fixed ring;2, noise reduction subassembly;21, elastic shaft sleeve;211, groove;212, ring groove;213, circular table surface;22, wear -resistant shaft sleeve;221, first convex ring;222, dust skirt;223, second convex ring;224, oil injection groove;225, oil hole;3, motor shaft. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, below will be to the technical scheme in the utility model embodiment, clear, complete, it is obvious that the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of the utility model protection.

[0017] Please refer to the attached Figure 1 - the attached Figure 3The utility model provides an embodiment: a structure for reducing motor noise, including casing 1, casing 1 is fixedly connected with end cover 11, end cover 11 is fixedly connected with first fixed ring 13, and first fixed ring 13 is installed with the noise reduction subassembly 2, and the noise reduction subassembly 2 includes elastic shaft sleeve 21 and wear -resistant shaft sleeve 22, and elastic shaft sleeve 21 is installed on first fixed ring 13, and wear -resistant shaft sleeve 22 is connected in elastic shaft sleeve 21, and wear -resistant shaft sleeve 22 is connected with motor shaft 3 in, end cover 11 is used to close casing 1, and first fixed ring 13 is used to install elastic shaft sleeve 21, and elastic shaft sleeve 21 is used to reduce vibration and noise, and wear -resistant shaft sleeve 22 is used to assist motor shaft 3 rotation;Gutter 211 is seted up on the outer wall of elastic shaft sleeve 21, and first fixed ring 13 is connected in the gutter 211, and two annular grooves 212 are seted up on the inner wall of elastic shaft sleeve 21, and the both ends of elastic shaft sleeve 21 are all provided with circular table face 213, and the gutter 211 is used to accommodate first fixed ring 13, and circular table face 213 is used to guide when installing elastic shaft sleeve 21;First convex ring 221 is fixedly connected with the position of annular groove 212 on the outer wall of wear -resistant shaft sleeve 22, and first convex ring 221 is connected in annular groove 212, and a plurality of second convex rings 223 are uniformly distributed on the inner wall of wear -resistant shaft sleeve 22, and second convex ring 223 is connected on motor shaft 3, and dust skirt 222 is fixedly connected with the both ends of wear -resistant shaft sleeve 22, first convex ring 221 cooperates annular groove 212, realizes the assembly between wear -resistant shaft sleeve 22 and elastic shaft sleeve 21, second convex ring 223 is used to support motor shaft 3, and dust skirt 222 is used to prevent dust;Oil injection groove 224 is seted up on wear -resistant shaft sleeve 22, and a plurality of oil outlet holes 225 are connected with oil injection groove 224, and oil outlet hole 225 is seted up between adjacent two second convex rings 223, and oil injection groove 224 and oil outlet hole 225 constitute oil channel, are used to inject lubricating oil, and lubricate the rotation of motor shaft 3;A plurality of mounting holes 14 are uniformly distributed on first fixed ring 13, and screw 15 is installed in mounting hole 14, and threaded hole 12 is seted up on end cover 11 with the position of mounting hole 14, and screw 15 is screwed in threaded hole 12, and threaded hole 12 and mounting hole 14 are used to install screw 15, and screw 15 is used to fix first fixed ring 13 on end cover 11;First fixed ring 13 is fixedly connected with sleeve 16, sleeve 16 is fixedly connected with second fixed ring 17, and second fixed ring 17 and sleeve 16 are all connected in the gutter 211, and first fixed ring 13, sleeve 16 and second fixed ring 17 constitute mounting seat and be used to install elastic shaft sleeve 21.

[0018] Working principle: in the utility model, first fixed ring 13, sleeve 16 and second fixed ring 17 are integrated structure, constitute the mounting seat for installing noise reduction assembly 2, when assembling and using, first wear-resistant bushing 22 is installed in elastic bushing 21, so that the first convex ring 221 is sleeved in annular groove 212, then the elastic bushing 21 is installed on the mounting seat, so that the first fixed ring 13, sleeve 16 and second fixed ring 17 are sleeved in groove 211, then the mounting seat is fixed on the end cover 11 through screw 15, finally the end cover 11 is installed on the casing 1, so that the motor shaft 3 is sleeved in wear-resistant bushing 22;Among them, threaded hole 12 and mounting hole 14 are used for installing screw 15, circular table surface 213 is used for orientation, conveniently installs elastic bushing 21 on the mounting seat, dust skirt 222 is used for preventing dust from invading wear-resistant bushing 22, second convex ring 223 is used for reducing the contact area of wear-resistant bushing 22 and motor shaft 3, so as to reduce the friction resistance, oil groove 224 and oil outlet hole 225 constitute an oil channel, for injecting lubricating oil, lubricating the rotation of motor shaft 3, elastic bushing 21 and wear-resistant bushing 22 are made of soft material such as silica gel or rubber.

[0019] In the description of the utility model, it is explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0020] The device embodiments described above are only schematic, wherein the units illustrated as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment according to the actual needs. Those skilled in the art can understand and implement without creative labor.

[0021] Finally, it should be pointed out that: the above examples are only used to illustrate the technical scheme of the utility model, and not to limit it, although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing examples, or make equivalent replacement to some technical features, and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the utility model.

Claims

1. A structure for reducing noise of an electric machine comprising a casing (1), characterized in that: The end cover (11) is fixedly connected on the shell (1), the first fixed ring (13) is fixedly connected on the end cover (11), the noise reduction assembly (2) is installed on the first fixed ring (13), the noise reduction assembly (2) comprises the elastic shaft sleeve (21) and the wear-resistant shaft sleeve (22), the elastic shaft sleeve (21) is installed on the first fixed ring (13), the wear-resistant shaft sleeve (22) is sleeved in the elastic shaft sleeve (21), and the motor shaft (3) is sleeved in the wear-resistant shaft sleeve (22).

2. The structure for reducing noise of an electric motor according to claim 1, characterized in that: The groove (211) is formed in the outer wall of the elastic shaft sleeve (21), the first fixed ring (13) is sleeved in the groove (211), the two annular grooves (212) are formed in the inner wall of the elastic shaft sleeve (21), and the two end faces of the elastic shaft sleeve (21) are provided with the circular table surfaces (213).

3. The structure for reducing noise of an electric motor according to claim 1, characterized in that: The first convex ring (221) is fixedly connected on the outer wall of the wear-resistant shaft sleeve (22) at the position corresponding to the annular groove (212), the first convex ring (221) is sleeved in the annular groove (212), the second convex rings (223) are uniformly distributed on the inner wall of the wear-resistant shaft sleeve (22), the second convex rings (223) are sleeved on the motor shaft (3), and the dustproof skirts (222) are fixedly connected on the two ends of the wear-resistant shaft sleeve (22).

4. The structure for reducing noise of an electric motor according to claim 3, characterized in that: The oil injection groove (224) is formed in the wear-resistant shaft sleeve (22), the oil injection groove (224) is in communication with the plurality of oil outlet holes (225), and the oil outlet holes (225) are arranged between the adjacent second convex rings (223).

5. The structure for reducing noise of an electric motor according to claim 1, characterized in that: The plurality of mounting holes (14) are uniformly distributed on the first fixed ring (13), the screws (15) are mounted in the mounting holes (14), the threaded holes (12) are formed in the end cover (11) at the positions corresponding to the mounting holes (14), and the screws (15) are screwed into the threaded holes (12).

6. A structure for reducing noise of an electric motor according to claim 5, characterized in that: The sleeve (16) is fixedly connected on the first fixed ring (13), the second fixed ring (17) is fixedly connected on the sleeve (16), and the second fixed ring (17) and the sleeve (16) are sleeved in the groove (211).

Images