Low-noise speed reducer

Abstract

The low-noise speed reducer comprises a power module and a noise reduction module, the power module comprises an outer shell, a shell cover detachably installed on the top of the outer shell, and a speed reducer machine core installed between the outer shell and the shell cover; the noise reduction module comprises a plurality of guide frames connected with the top of an inner cavity of the shell cover, two rubber plates slidably connected to the outer sides of the guide frames in a sleeving mode, a noise reduction outer pipe connected with the bottoms of the rubber plates, and a noise reduction inner pipe connected with the noise reduction outer pipe in an inserted mode. According to the noise reduction device, the rubber plate is moved along the guide frame, then the noise reduction inner pipe is stretched downwards, the noise reduction inner pipe extends into the shell, in the process, the noise reduction inner pipe is close to a gear and a transmission shaft in a machine core of the speed reducer as much as possible, and then noise generated by the gear and the transmission shaft can be transmitted into the noise reduction inner pipe at a short distance; and then the sound is digested by the silencing outer pipe and the silencing inner pipe which are made of the sound-absorbing cotton and the silencing material, so that the sound insulation effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a low-noise reducer. Background Art

[0002] The reducer plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery. Reducers can be divided into two categories according to their uses: general reducers and special reducers. The design, manufacturing and use characteristics of the two are different.

[0003] Application number CN202021351237.1 discloses a noise reduction gear for a reducer, and its technical solution is: the housing includes an upper shell and a lower shell, and oil seal bearings are fixedly installed on both sides of the upper shell and the lower shell, and a first bevel gear is arranged inside the housing, and a first reduction gear is fixedly installed at the bottom of the first bevel gear, and the first reduction gear includes a second bevel gear, and the diameter of the second bevel gear is larger than that of the first bevel gear, and the second bevel gear is vertically meshed and connected with the first bevel gear, and the first helical gear is plugged into the center position of the top of the second bevel gear. The beneficial effect of the utility model is: solid lubricating oil is added through the oil filling hole, so that the noise caused by friction can be reduced during operation of the gear, and the wear of the gear is reduced, and the service life of the equipment is increased. The inner wall of the shell is bonded with sound insulation cotton, which can block the propagation of noise. When the application is used specifically, not only friction sound will be generated between the gears, but also noise will be generated between the transmission shaft and the reducer housing. Therefore, it is difficult to play an effective sound insulation role by relying only on a layer of sound insulation cotton. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A low-noise reducer comprises a power module and a noise reduction module, wherein the power module comprises an outer shell, a shell cover detachably mounted on the top of the outer shell, and a reducer movement mounted between the outer shell and the shell cover, and the noise reduction module comprises a plurality of guide frames connected to the top of an inner cavity of the shell cover, two rubber plates slidably sleeved on the outside of the guide frames, a silencer outer tube connected to the bottom of the rubber plate, a silencer inner tube plugged into the silencer outer tube, and sound-absorbing cotton mounted inside the silencer inner tube, wherein the silencer inner tube is provided with a plurality of openings.

[0007] By adopting the above technical solution, the rubber plate is moved along the guide frame, and then the silencer inner tube is stretched downward to extend to the inside of the outer shell. In this process, the silencer inner tube is made as close to the gears and transmission shaft in the reducer movement as possible, and then the noise emitted by the two can be transmitted into the silencer inner tube at a close distance, and then absorbed by the silencer outer tube and the silencer inner tube made of sound-absorbing cotton and silencer material, which effectively improves the sound insulation effect.

[0008] In a preferred example, the present invention can be further configured as follows: the shell cover is made of the same material as the shell.

[0009] In a preferred example, the utility model can be further configured as follows: a plurality of guide frames are arranged in a row at equal intervals, and the guide frames are arranged in a "0" shape.

[0010] In a preferred example, the utility model can be further configured as follows: pull ropes are installed on both sides of the rubber plate, and the pull ropes are arranged in an arc shape.

[0011] In a preferred example, the utility model can be further configured as follows: the outer silencer tube and the inner silencer tube are made of the same material, and the inner silencer tube slides through the bottom end of the outer silencer tube.

[0012] In a preferred example, the utility model can be further configured as follows: the opening is located at the bottom of the sound-absorbing cotton, and the interior of the shell is connected to the interior of the silencer inner tube through the opening.

[0013] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0014] 1. In the utility model, the rubber plate is moved along the guide frame, and then the silencer inner tube is stretched downward to extend the silencer inner tube to the inside of the outer shell. In this process, the silencer inner tube is made as close to the gears and transmission shaft in the reducer movement as possible, and then the noise emitted by the two can be transmitted into the silencer inner tube at a close distance, and then be absorbed by the silencer outer tube and the silencer inner tube made of sound-absorbing cotton and silencer material, which effectively improves the sound insulation effect.

[0015] 2. In the utility model, when moving the rubber plate, two fingers can be used to open the two pull ropes, thereby reducing the contact area between the rubber plate and the guide frame, making it easier to move the rubber plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the power module of the utility model;

[0018] Figure 3 This is a schematic diagram of the noise reduction module of the utility model.

[0019] Reference numerals:

[0020] 100, power module; 110, housing; 120, housing cover; 130, reducer movement;

[0021] 200, noise reduction module; 210, guide frame; 220, rubber plate; 230, silencer outer tube; 240, silencer inner tube; 250, sound-absorbing cotton. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0024] A low-noise reducer provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings. Embodiment 1

[0025] Combination Figure 1-3 As shown, the utility model provides a low-noise reducer, including a power module 100 and a noise reduction module 200, wherein the power module 100 includes a housing 110, a housing cover 120 detachably mounted on the top of the housing 110, and a reducer movement 130 mounted between the housing 110 and the housing cover 120;

[0026] The noise reduction module 200 includes a plurality of guide frames 210 connected to the top of the inner cavity of the shell cover 120, two rubber plates 220 slidably sleeved on the outside of the guide frames 210, a silencer outer tube 230 connected to the bottom of the rubber plate 220, a silencer inner tube 240 plugged into the silencer outer tube 230, and sound-absorbing cotton 250 installed inside the silencer inner tube 240, wherein the silencer inner tube 240 is provided with a plurality of openings.

[0027] Furthermore, a plurality of guide frames 210 are arranged in a row at equal intervals, and the guide frames 210 are arranged in a "0" shape. With this layout design, the positions of the silencer outer tube 230 and the silencer inner tube 240 can be flexibly adjusted.

[0028] Furthermore, the outer silencer tube 230 and the inner silencer tube 240 are made of the same material, and the inner silencer tube 240 slides through the bottom end of the outer silencer tube 230 . Using the same material can reduce the difficulty of material selection when manufacturing the outer silencer tube 230 and the inner silencer tube 240 .

[0029] Furthermore, the opening is located at the bottom of the sound-absorbing cotton 250 , and the interior of the outer shell 110 is connected to the interior of the silencer inner tube 240 through the opening. This layout design ensures that noise can smoothly enter the silencer inner tube 240 . Embodiment 2

[0030] Combination Figure 1-2 As shown, based on the first embodiment, the shell cover 120 is made of the same material as the outer shell 110. Using the same material can reduce the difficulty of material selection when manufacturing the shell cover 120 and the outer shell 110. Embodiment 3

[0031] Combination Figure 3 As shown, in the above embodiment, pull ropes are installed on both sides of the rubber plate 220, and the pull ropes are arranged in an arc shape. When moving the rubber plate 220, two fingers can be used to open the two pull ropes, thereby reducing the contact area between the rubber plate 220 and the guide frame 210, making it easier to move the rubber plate 220.

[0032] The working principle and use process of the utility model: when the device is put into actual use, the rubber plate 220 is moved along the guide frame 210, and then the silencer inner tube 240 is stretched downward to extend the silencer inner tube 240 to the inside of the outer shell 110. During this process, the silencer inner tube 240 is made as close to the gears and transmission shaft in the reducer movement 130 as possible, and then the noise emitted by the two can be transmitted into the silencer inner tube 240 at a short distance, and then absorbed by the sound-absorbing cotton 250, the silencer outer tube 230 made of silencer material, and the silencer inner tube 240, which effectively improves the sound insulation effect.

[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low-noise reducer, characterized in that: include: The power module (100) comprises a housing (110), a housing cover (120) detachably mounted on the top of the housing (110), and a reducer movement (130) mounted between the housing (110) and the housing cover (120); The noise reduction module (200) comprises a plurality of guide frames (210) connected to the top of the inner cavity of the shell cover (120), two rubber plates (220) slidably sleeved on the outside of the guide frames (210), a silencer outer tube (230) connected to the bottom of the rubber plate (220), a silencer inner tube (240) plugged into the silencer outer tube (230), and sound-absorbing cotton (250) installed inside the silencer inner tube (240), wherein the silencer inner tube (240) is provided with a plurality of openings.

2. A low-noise reducer according to claim 1, characterized in that: The shell cover (120) is made of the same material as the shell (110).

3. A low-noise reducer according to claim 1, characterized in that: The plurality of guide frames (210) are arranged in a row at equal intervals, and the guide frames (210) are arranged in a "0" shape.

4. A low-noise reducer according to claim 1, characterized in that: Draw ropes are installed on both sides of the rubber plate (220), and the draw ropes are arranged in an arc shape.

5. A low-noise reducer according to claim 1, characterized in that: The outer silencer tube (230) and the inner silencer tube (240) are made of the same material, and the inner silencer tube (240) slides through the bottom end of the outer silencer tube (230).

6. A low-noise reducer according to claim 1, characterized in that: The opening is located at the bottom of the sound-absorbing cotton (250), and the interior of the outer shell (110) is connected to the interior of the sound-absorbing inner tube (240) through the opening.

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