CN212106872U - Noise reduction gear box - Google Patents

Abstract

The utility model discloses a gear box of making an uproar falls belongs to machinery, aims at providing a gear box that can the noise reduction, and its technical scheme main points are including the box, the box includes that inner wall, cover establish the shell on the inner wall, vacuole formation between inner wall and the shell, be equipped with the subassembly of making an uproar falls in the cavity, the utility model has the advantages of reduce the transmission of gear box noise.

Description

Noise reduction gear box

Technical Field

The utility model relates to a technical field of gear box, in particular to gear box of making an uproar falls.

Background

A gearbox is a mechanical device used to increase and decrease torque through deceleration. It consists of two or more gears, one of which is driven by a motor. The output speed of the gearbox is inversely proportional to the gear ratio. Gearboxes are generally preferred in constant speed applications, such as conveyors and cranes, which can provide increased torque.

Chinese patent No. CN106224481A discloses a gear box, wherein when a motor shaft rotates, a first driving disk fixed on the motor shaft rotates together for output, and on the other hand, a pinion fixed on the motor shaft also rotates together, the pinion drives a first driving mechanism for transmission, the first driving mechanism drives a second driving disk for rotation output, the first driving mechanism drives the second driving mechanism for transmission, the second driving mechanism drives a third driving disk for rotation output, the rotation outputs of the first driving disk, the second driving disk and the third driving disk are concentric, the gear box has a simple structure, a few accessories and a small occupied space, reduces the volume of a household appliance, does not need to change stations during changing operation, and is very simple and convenient.

This kind of gear box simple structure, occupation space is few, but first drive disk, second drive disk and third drive disk drive each other in the work in the in-service use process, because friction can produce vibrations when the meshing to the noise appears, produces great influence to surrounding operational environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gear box of making an uproar falls has the advantage that reduces the gear box noise.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a gear box of making an uproar falls, includes the box, the box includes that inner wall, cover establish the shell on the inner wall, form the cavity between inner wall and the shell, be equipped with the subassembly of making an uproar falls in the cavity.

Through adopting above-mentioned technical scheme, the subassembly of making an uproar falls in the cavity has the effect of weakening and separation to the noise, reaches to have the advantage that reduces the gear box noise.

Furthermore, the noise reduction assembly comprises an acoustic board fixedly connected with the inner wall and a vacuum box fixedly connected with the inner wall of the shell.

Through adopting above-mentioned technical scheme, the abatvoix plays absorptive effect to the noise, is not outwards propagated by the totally absorbed noise and contacts the vacuum chamber, and the vacuum chamber plays certain isolated effect to sound, and on the noise kick-backed the abatvoix this moment, was absorbed once more by the abatvoix, reached and has the advantage that reduces the gear box noise.

Furthermore, a sound insulation film is arranged between the sound absorption plate and the vacuum box.

Through adopting above-mentioned technical scheme, when the abatvoix can not the complete noise absorption, on the noise kick-backed to the acoustic celotex board after contacting with vacuum chamber, the sound-proof membrane can help the noise constantly kick-back between vacuum chamber and abatvoix, reduces the intensity of sound wave, improves the noise reduction effect.

Further, the noise reduction assembly comprises a sound insulation board connected with the inner wall and a protrusion arranged on the surface of the sound insulation board, and the sound insulation board is connected with the inner wall through a spring.

Through adopting above-mentioned technical scheme, noise propagation contact acoustic celotex board, acoustic celotex board play the separation effect to it, and the noise can kick-back in the bulge, and acoustic celotex board can make a round trip reciprocating motion under the effect of spring when kick-backing, reduces the intensity of sound wave, also makes the noise weaken at the rebound in-process gradually.

Furthermore, the protrusions are irregularly-shaped bumps and are uniformly distributed on two sides of the surface of the sound insulation board.

Through adopting above-mentioned technical scheme, the anomalous lug in acoustic celotex board surface makes the noise can increase the rebound stroke through the resilience of a plurality of directions to it is better to make the noise reduce the effect.

Furthermore, the noise reduction assembly further comprises a silencing hole formed in the shell, the silencing hole penetrates through the cavity and the inner wall, and silencing cotton is arranged in the silencing hole.

Through adopting above-mentioned technical scheme, the cooperation of bloop and amortization cotton is carried out the amortization once more to the noise in the box, and the bloop can also play the radiating effect in the box simultaneously, prevents that the heat is too high in the box.

Furthermore, the inner wall of the silencing hole is arranged in a wave concave-convex shape.

Through adopting above-mentioned technical scheme, the noise sound deadening hole of wave concavo-convex form can play the effect of kick-backing to the noise when the noise contacts, can make the noise kick-backing amortization once more around the noise sound deadening hole, makes the noise that transmits outside the box reach the minimum.

Further, bottom half fixedly connected with buffer layer, the buffer layer is for inhaling the cotton layer of sound and with bottom of the case adhesive bonding.

Through adopting above-mentioned technical scheme, the buffer layer is used for reducing the box because the noise that vibrations produced, inhales the cotton layer of sound and also plays the sound effect of inhaling.

Furthermore, the box cover is a sound insulation plate.

Through adopting above-mentioned technical scheme, the sound insulation board adopts the fibreboard material, has certain sound absorption effect, because the case lid needs to cover, and the sound insulation effect of case lid part can receive the influence, and the noise reduction effect of sound insulation board reinforcing case lid part.

To sum up, the utility model discloses following beneficial effect has:

1. through the arrangement of the noise reduction assembly, the effects of rebounding and weakening noise can be achieved;

2. through the arrangement of the silencing holes, the effect of weakening the secondary rebound of noise can be achieved;

3. through the setting of buffer layer, can play and reduce because the effect of vibrations production noise.

Drawings

FIG. 1 is a schematic sectional view of example 1;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic sectional view of embodiment 2;

fig. 4 is an enlarged view at B in fig. 3.

In the figure, 1, a box body; 12. a box cover; 13. an inner wall; 14. a housing; 15. a cavity; 2. a noise reduction assembly; 21. a sound-absorbing panel; 22. a vacuum box; 23. a sound insulating film; 24. a sound insulating board; 25. a protrusion; 26. a silencing hole; 27. silencing cotton; 28. a spring; 3. a shock-absorbing layer; 31. and a sound absorption cotton layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

the utility model provides a gear box of making an uproar falls, as shown in figure 1, including box 1, box 1 includes inner wall 13, the shell 14 of cover on inner wall 13, form cavity 15 between inner wall 13 and the shell 14, be equipped with in the cavity 15 and fall the subassembly 2 of making an uproar, the structure of box 1 is strengthened with shell 14 to the inner wall 13 of box 1, reduce the propagation of some noise, the subassembly 2 of making an uproar falls in the cavity 15 plays noise reduction, the separation noise is propagated, prevent that the noise from spreading from influencing surrounding operational environment from box 1.

As shown in fig. 1 and 2, a box cover 12 is arranged above the box body 1, the box cover 12 is matched with the box body 1, the box cover 12 is a sound insulation plate, and the relative noise reduction effect of the part of the box cover 12 is poor, so that the box cover 12 is the sound insulation plate, namely, the fiber board material, has a good sound insulation effect, and makes the noise just isolated in the box body 1 and absorbed by the noise reduction assembly 2.

As shown in fig. 1 and 2, the noise reduction assembly 2 includes a sound absorption plate 21 fixedly connected to the inner wall 13 and a vacuum box 22 fixedly connected to the inner wall 13 of the housing 14, a sound insulation film 23 is further disposed between the vacuum box 22 and the sound insulation plate 24, the sound absorption plate 21 absorbs noise generated in the housing 1, the noise not absorbed by the sound absorption plate 21 continues to be spread outwards and contacts the vacuum box 22, the vacuum box 22 has a noise blocking effect on the noise, the noise bounces through the vacuum cavity 15, contacts the sound absorption plate 21 again, and is absorbed by the sound absorption plate 21, so that a good noise reduction effect is achieved.

As shown in fig. 1 and 2, noise contacts the sound-insulating films 23 during the propagation between the vacuum chamber 22 and the sound-absorbing panel 21, and rebounds between the sound-insulating films 23 a plurality of times, so that unabsorbed noise is repeatedly transmitted between the inner wall 13 of the vacuum chamber 15 and the sound-absorbing panel 21 and is finally attenuated by the sound-absorbing panel 21.

As shown in fig. 1 and 2, a part of the noise may not be completely attenuated by the sound-absorbing plate 21, the noise reduction assembly 2 further includes a sound-deadening hole 26 formed in the housing 14, the sound-deadening hole 26 penetrates through the cavity 15 and the inner wall 13, a sound-deadening cotton 27 is disposed in the sound-deadening hole 26, and the noise which is not completely absorbed is deadened by the sound-deadening cotton 27 and then transmitted to the attenuated noise through the sound-deadening hole 26.

As shown in fig. 1 and 2, the inner wall 13 of the muffling hole 26 is wavy and concave-convex, and the wavy muffling hole 26 can make noise rebound on the concave-convex muffling hole 26 for multiple times, so that the noise can be reduced through multiple rebounds before being transmitted from the muffling hole 26.

As shown in fig. 1, the bottom of the box body 1 is provided with the damping layer 3, the box body 1 can generate certain vibration during working, the vibration can bring noise, the damping layer 3 can reduce the vibration of the box body 1, so that the generated noise is smaller, the damping layer 3 is a sound-absorbing cotton layer 31 and is glued at the bottom of the box body 1 to absorb the noise, and the noise transmitted out of the box body 1 is reduced.

The specific implementation process comprises the following steps: noise attenuates through the noise reduction subassembly 2 in the cavity 15, noise passes through acoustic panel 21 earlier, weaken through the sound wave many times on acoustic panel 21, make the noise reduce, pass through the separation of vacuum box 22 again, make the noise hardly spread out from box 1, still be equipped with sound-proof membrane 23 between vacuum box 22 and acoustic panel 21, the noise is through constantly kick-backing on sound-proof membrane 23, contact vacuum box 22 and acoustic panel 21 many times and produce the effect of weakening the noise sound wave, make the noise constantly reduce, pass through bloop 26 again, be equipped with amortization cotton 27 in the bloop 26, amortization cotton 27 attenuates the noise once more, the inner wall 13 of bloop 26 is the wave unsmooth form, the noise can be spread out again through the unsmooth form bloop 26 inner wall 13 of bloop of wave before spreading out from bloop 26, the noise gear box that is reduced many times.

Example 2:

the difference from example 1 is that:

as shown in fig. 3 and 4, the noise reduction assembly 2 includes a baffle 24 connected to the inner wall 13, and a protrusion 25 disposed on the surface of the baffle 24, wherein the baffle 24 is connected to the inner wall 13 through a spring 28, the protrusion 25 is an irregular protrusion distributed on both sides of the baffle 24, noise is isolated by the baffle 24, the baffle 24 rebounds the noise multiple times under the vibration of the spring 28, the protrusion 25 on the surface of the baffle 24 rebounds for noise reduction, the protrusion 25 is a plurality of irregular protrusions, that is, the noise can rebound more times on the irregular protrusion surface, so that the noise reduction effect is better, the noise reduction assembly 2 further includes a muffling hole 26 disposed on the housing 14, and the muffling hole 26 is identical to the muffling hole 26 in embodiment 1.

The specific implementation process comprises the following steps: noise is produced in the box body 1 and then passes through the irregular bulge 25 on the sound insulating board 24, and rebounds on the surface of the bulge 25 for multiple times, so that noise sound waves are gradually weakened, the spring 28 connected between the sound insulating board 24 and the inner wall 13 continuously vibrates, the sound insulating board 24 makes reciprocating motion, the noise collides with the sound insulating board 24 for multiple times, the noise is weakened, and the noise is reduced through the silencing cotton 27 in the silencing hole 26.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a gearbox of making an uproar falls, includes box (1), case lid (12), its characterized in that: the box body (1) comprises an inner wall (13) and an outer shell (14) sleeved on the inner wall (13), a cavity (15) is formed between the inner wall (13) and the outer shell (14), and a noise reduction assembly (2) is arranged in the cavity (15).

2. A noise reducing gearbox according to claim 1 wherein: the noise reduction assembly (2) comprises a sound absorption plate (21) fixedly connected with the inner wall (13) and a vacuum box (22) fixedly connected with the inner wall (13) of the shell (14).

3. A noise reducing gearbox according to claim 2 wherein: and a sound insulation film (23) is arranged between the sound absorption plate (21) and the vacuum box (22).

4. A noise reducing gearbox according to claim 1 wherein: noise reduction subassembly (2) include acoustic celotex board (24) be connected with inner wall (13), set up at the arch (25) on acoustic celotex board (24) surface, acoustic celotex board (24) are passed through spring (28) with inner wall (13) and are connected.

5. A noise reducing gearbox according to claim 4 wherein: the bulges (25) are irregularly-shaped bumps and are uniformly distributed on two sides of the surface of the sound insulation board (24).

6. A noise reducing gearbox according to claim 3 or 5, wherein: the noise reduction assembly (2) further comprises a silencing hole (26) formed in the shell (14), the silencing hole (26) penetrates through the cavity (15) and the inner wall (13), and silencing cotton (27) is arranged in the silencing hole (26).

7. A noise reducing gearbox according to claim 6 wherein: the inner wall (13) of the silencing hole (26) is arranged in a wave concave-convex shape.

8. A noise reducing gearbox according to claim 1 wherein: the box (1) bottom fixedly connected with buffer layer (3), buffer layer (3) just with box (1) bottom adhesive bonding for inhaling cotton layer (31) of sound.

9. A noise reducing gearbox according to claim 1 wherein: the box cover (12) is a sound insulation plate.

Images