Noise reduction type gearbox cover

Abstract

The utility model provides a noise reduction type gear box cover which is installed on a box body, a gear assembly is installed in the box body, and the box cover comprises a cover body fixed to the box body through a bolt; the mounting plate is fixedly connected to the bottom of the cover body, and the mounting plate is attached to the inner wall of the box body; the number of the mounting plates is four, and the four mounting plates are fixedly connected end to end; the mounting plate extends into the box body, a transition notch is formed in the mounting plate, and the transition notch is used for avoiding a gear assembly in the box body; the silencing cavity is formed in the mounting plate; the sound absorption openings are formed in the side, away from the box body, of the mounting plate, and the sound absorption openings communicate with the sound attenuation cavity; and the first sound absorption cotton is adhered to the cavity wall of the silencing cavity. According to the gear assembly, the effect of absorbing noise generated during operation of the gear assembly can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of gear box, in particular to a noise reduction type gear box cover. BACKGROUND

[0002] The gear box plays a role in sealing the gear assembly through the cooperation between the box body and the cover, but due to the meshing impact when the gear assembly meshes with each other, noise and vibration corresponding to the gear meshing frequency are generated; if the noise intensity generated when the gear assembly operates is too large, the working environment of the workers will be affected, and even the workers will feel uncomfortable. The current gear box cover is generally used for dust prevention and does not have good noise reduction function. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the technical problems mentioned in the background art, the purpose of the present application is to provide a noise reduction type gear box cover, which can improve the noise absorption effect of the noise generated when the gear assembly operates.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A noise reduction type gear box cover is installed on a box body, the box body is internally installed with a gear assembly, and the cover comprises:

[0006] A cover body is fixed on the box body by bolts;

[0007] An installation plate is fixedly connected to the bottom of the cover body, and the installation plate is in close contact with the inner wall of the box body; the installation plate has four, and the four installation plates are fixedly connected at the head and tail; the installation plate extends into the box body, and the installation plate is provided with a transition gap, which is used to avoid the gear assembly in the box body;

[0008] A sound attenuation cavity is provided in the installation plate;

[0009] A plurality of sound absorption openings are provided on the side of the installation plate away from the box body, and the sound absorption openings are in communication with the sound attenuation cavity;

[0010] First sound absorption cotton is attached to the cavity wall of the sound attenuation cavity.

[0011] In an implementable manner, the installation plate comprises a plate material one, a plate material two and a plate material frame fixedly connected between the plate material one and the plate material two, and the sound attenuation cavity is a closed area composed of the plate material one, the plate material two and the plate material frame.

[0012] In an implementable manner, the sound absorption opening is of an open type, and the aperture of the sound absorption opening located close to the box body is smaller than that of the sound absorption opening located away from the box body.

[0013] In an embodiment, the material of the mounting plate is rubber.

[0014] In an embodiment, the outer periphery of the mounting plate and the bottom of the cover are bonded with second sound-absorbing cotton.

[0015] In an embodiment, a rubber gasket is arranged between the connecting surface of the cover and the box body.

[0016] In an embodiment, a reinforcing plate is fixedly connected to the top of the cover.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The present application has the following beneficial effects:

[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0021] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0022] Figure 1 An overall structure explosion schematic diagram of an embodiment of the present application is shown;

[0023] Figure 2 An overall structure schematic diagram of an embodiment of the present application is shown;

[0024] Figure 3 A cross-sectional structure schematic diagram of a mounting plate of an embodiment of the present application is shown;

[0025] Figure 4 An explosion structure schematic diagram of a mounting plate of an embodiment of the present application is shown.

[0026] Explanation of reference numerals in the drawings:

[0027] 100, box cover; 110, cover body; 120, mounting plate; 121, plate one; 122, plate two; 123, plate frame; 130, sound absorbing cavity; 140, sound absorbing port; 200, box body; 300, gear assembly; 400, transition gap; 510, first sound absorbing cotton; 520, second sound absorbing cotton; 600, rubber gasket; 700, reinforcing plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Referring to Figure 1 Figure 4 The present embodiment provides a noise reduction type gear box cover 100, which is installed on a box body 200, and a gear assembly 300 is installed inside the box body 200. The cover 100 includes a cover body 110 fixed on the box body 200 by bolts, four mounting plates 120 fixed at the bottom of the cover body 110, the four mounting plates 120 connected end to end and extending into the box body 200, and the mounting plates 120 fitted with the inner wall of the box body 200, a transition gap 400 is provided on the mounting plate 120, and the transition gap 400 is used to avoid the mounting plate 120 from the gear assembly 300 during installation, specifically, the transition gap 400 is used to avoid the rotating shaft of the gear assembly 300. It should be noted that not all of the mounting plates 120 need to be provided with the transition gap 400. If the rotating shaft of the gear assembly 300 only passes through two or three sides of the box body 200, the transition gap 400 is provided on the appropriate mounting plate 120 according to the need. A sound absorbing cavity 130 is provided in the mounting plate 120, a plurality of sound absorbing ports 140 are provided on the side of the mounting plate 120 away from the box body 200, and the sound absorbing ports 140 are in communication with the sound absorbing cavity 130. The sound absorbing ports 140 should be uniformly distributed on the side of the mounting plate 120. The first sound absorbing cotton 510 is attached to the cavity wall of the sound absorbing cavity 130.

[0030] Further, referring to Figure 3 and Figure 4 ​The mounting plate 120 comprises a first plate 121, a second plate 122 and a plate frame 123 fixed between the first plate 121 and the second plate 122, and the sound-absorbing cavity 130 is a closed area formed by the first plate 121, the second plate 122 and the plate frame 123. Here, the mounting plate 120 is designed in a split type mainly for the convenience of mounting the first sound-absorbing cotton 510. It should be noted that the mounting plate 120 can also be designed in a type only having the first plate 121 and the second plate 122. In this type, sound-absorbing grooves are formed in the first plate 121 and / or the second plate 122. When the first plate 121 and the second plate 122 are fixed, the sound-absorbing grooves are converted into the sound-absorbing cavity 130.

[0031] In the following, the specific use scenarios are further introduced. When the gear assembly 300 is running, the noise generated thereby is directly transmitted to the mounting plate 120, and then a part of the noise directly enters the sound-absorbing cavity 130 from the sound-absorbing opening 140 of the mounting plate 120. The noise is continuously reflected in the sound-absorbing cavity 130, and the energy of the noise is gradually absorbed by the first sound-absorbing cotton 510 on the inner wall of the sound-absorbing cavity 130, thereby achieving the purpose of reducing the noise. Another part of the noise does not directly enter the sound-absorbing opening 140 of the mounting plate 120, and the noise is further absorbed by the mounting plate 120 after impacting on the mounting plate 120. The part of the noise not absorbed by the mounting plate 120 is reflected, and then impacts on the remaining mounting plates 120. The noise is continuously absorbed in this way, thereby effectively reducing the noise generated by the running of the gear assembly 300 from being transmitted to the outside.

[0032] In order to further improve the absorption of the noise generated by the running of the gear assembly 300, a fifth mounting plate 120 can be provided. The fifth mounting plate 120 is fixed to the cover 110, and the four mounting plates 120 connected end to end are respectively fixed to the four sides of the fifth mounting plate 120.

[0033] Overall, the four mounting plates 120 are fixed to the bottom of the cover 110, and the four mounting plates 120 are connected end to end. The sound-absorbing cavity 130 is formed in the mounting plate 120, and the first sound-absorbing cotton 510 is adhered in the sound-absorbing cavity 130. The sound-absorbing opening 140 is formed in the side of the mounting plate 120 away from the box 200. In this way, the noise generated by the running of the gear assembly 300 can be effectively absorbed, and the overall noise reduction effect of the gear box is improved.

[0034] Referring to Figure 3 and Figure 4 The sound-absorbing opening 140 is in an open type, and the aperture of the sound-absorbing opening 140 near the box 200 is smaller than the aperture of the sound-absorbing opening 140 away from the box 200. In this way, the noise can be collected into the sound-absorbing cavity 130, and the energy of the noise can be gradually reduced in the sound-absorbing cavity 130, thereby improving the noise elimination effect.

[0035] As a specific embodiment of the present application, the material of the mounting plate 120 is rubber material. The noise has a certain energy, and the mounting plate 120 made of rubber material can have a certain vibration reduction on it, thereby effectively reducing the ability of the noise to vibrate and transmit to the box body 200; in addition, the rubber has elasticity, and after being subjected to the pressure of the sound wave, it can have a certain elastic deformation to absorb and disperse the ability of the sound wave, thereby having a certain noise reduction effect. Therefore, the mounting plate 120 made of rubber material can further improve the overall noise reduction effect of the box cover 100.

[0036] Referring to Figure 1 The second sound-absorbing cotton 520 is bonded to the outer periphery of the mounting plate 120 and the bottom of the cover body 110, and the second sound-absorbing cotton 520 can further enhance the absorption effect of the noise generated by the gear assembly 300, thereby improving the noise reduction ability of the gear box.

[0037] Referring to Figure 1 As a specific embodiment of the present application, a rubber gasket 600 is arranged between the connecting surface of the box body 200 and the box cover 100.

[0038] In combination with a specific use scenario, after the box body 200 and the box cover 100 are connected, the rubber gasket 600 can be used to further increase the connection sealing property between the box cover 100 and the box body 200, and the rubber gasket 600 can also be used as a shock-absorbing pad to effectively isolate the vibration of the box body 200 from being transmitted to the box cover 100, thereby achieving a certain noise reduction effect of the gear box.

[0039] Referring to Figure 1 and Figure 2 As a specific embodiment of the present application, a reinforcing plate 700 is further fixed to the top of the box cover 100.

[0040] In combination with a specific use scenario, the reinforcing plate 700 is fixed to the surface of the box cover 100, which can improve the rigidity of the box cover 100, reduce the deformation and vibration caused by the transmission of the gear vibration to the box cover 100, thereby reducing the noise radiation, and in addition, the reinforcing plate 700 can also serve as a handle to facilitate the disassembly and placement of the box cover 100.

[0041] It should be understood that the various forms of the flow shown above can be reordered, added or deleted steps. For example, the steps described in the present application can be executed in parallel, in sequence or in different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0042] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0043] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A noise reduction type gear box cover mounted on a box body (200) in which a gear assembly (300) is installed, characterized in that, The box cover (100) comprises: a cover body (110) fixed on the box body (200) by bolts; a mounting plate (120) fixed at the bottom of the cover body and fitted with the inner wall of the box body (200); the mounting plate (120) has four mounting plates (120) fixed at the head and tail; the mounting plate (120) extends into the box body (200), and the mounting plate (120) is provided with a transition gap (400) for avoiding the gear assembly (300) in the box body (200); a sound attenuation cavity (130) provided in the mounting plate (120); a plurality of sound absorption openings (140) provided on the side of the mounting plate (120) away from the box body (200), the sound absorption openings (140) being in communication with the sound attenuation cavity (130); a first sound absorption cotton (510) bonded to the cavity wall of the sound attenuation cavity (130).

2. The noise reduction type gear box cover according to claim 1, wherein: the mounting plate (120) comprises a plate material one (121), a plate material two (122) and a plate material frame (123) fixed between the plate material one (121) and the plate material two (122), and the sound attenuation cavity (130) is a closed area composed of the plate material one (121), the plate material two (122) and the plate material frame (123).

3. The noise reduction type gear box cover according to claim 1, wherein: the sound absorption opening (140) is of an open type, and the aperture of the sound absorption opening (140) on the side close to the box body (200) is smaller than that on the side away from the box body (200).

4. The noise reduction type gear box cover according to claim 1, wherein: the material of the mounting plate (120) is rubber material.

5. The noise reduction type gear box cover according to claim 1, wherein: the outer periphery of the mounting plate (120) and the bottom of the cover body (110) are bonded with a second sound absorption cotton (520).

6. The noise reduction type gear box cover according to claim 1, wherein: a rubber gasket (600) is arranged between the connecting surface of the box cover (100) and the box body (200).

7. The noise reduction type gear box cover according to claim 1, wherein: a reinforcing plate (700) is fixed at the top of the box cover (100).

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