CN216200366U

CN216200366U - Worm gear speed reducer with noise reduction mechanism

Info

Publication number: CN216200366U
Application number: CN202122421602.2U
Authority: CN
Inventors: 金迪苗; 杨秋子
Original assignee: Hangzhou Baiding Transmission Technology Co ltd
Current assignee: Hangzhou Baiding Transmission Technology Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-04-05
Anticipated expiration: 2031-10-08

Abstract

The utility model relates to the technical field of speed reducers, and discloses a worm and gear speed reducer with a noise reduction mechanism, which comprises a motor and a speed reducer body, wherein the speed reducer body comprises a shell, a rotating shaft, a worm gear and a worm, an output shaft of the motor is coaxially connected with the worm, one end of the rotating shaft is rotatably connected in the shell, the worm gear is fixedly sleeved on the rotating shaft and is in transmission engagement with the worm, a sound-proof shield is sleeved outside the shell and comprises an upper shield body, a connecting frame and a lower shield body which are mutually combined, the upper shield body and the lower shield body are respectively composed of an inner shield body and an outer shield body, a plurality of elastic bulges are arranged in the inner shield body and are abutted against the outside of the shell, a plurality of sound absorption holes are formed in the inner shield body, a noise reduction assembly is arranged between the inner shield body and the outer shield body, the noise reduction assembly comprises a noise reduction plate and a plurality of noise reduction balls which are sequentially arranged along the direction from the inner shield body to the outer shield body, the silencing plate comprises a grid plate layer and a silencing cotton layer which are spliced mutually, and a plurality of resonance cavities are formed in the silencing ball.

Description

Worm gear speed reducer with noise reduction mechanism

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a worm and gear speed reducer with a noise reduction mechanism.

Background

The speed reducer is an independent component consisting of gear transmission, worm transmission and gear-worm transmission which are enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine.

Among them, the worm gear reducer is a power transmission mechanism that is used commonly, and can reduce the number of revolutions of the motor to a desired number of revolutions, thereby obtaining a large torque. The worm gear speed reducer mainly has the following functions: the output torque is improved while the speed is reduced, the torque output proportion is multiplied by the reduction ratio according to the output of the motor, but attention is paid to the fact that the rated torque of the speed reducer cannot be exceeded; the deceleration reduces the inertia of the load at the same time, the reduction in inertia being the square of the reduction ratio.

The existing worm and gear speed reducer is in the using process, friction can be generated due to mutual transmission between worm and gear, and then the noise is generated, meanwhile, the long-term use of the speed reducer is not facilitated, the speed reducer can drive a shell to vibrate due to the internal movement of the speed reducer in the using process, and then the noise is generated outside the speed reducer, and the noise pollution is generated in the working environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a worm and gear speed reducer with a noise reduction mechanism, which has the advantage of reducing noise generated in the speed reducer process.

In order to achieve the above purpose, the basic scheme of the utility model is as follows: a worm and gear speed reducer with a noise reduction mechanism comprises a motor and a speed reducer body, wherein the speed reducer body comprises a shell, a rotating shaft, a worm wheel and a worm, an output shaft of the motor is coaxially connected with the worm, one end of the rotating shaft is rotatably connected in the shell, the worm wheel is fixedly sleeved on the rotating shaft and is meshed with the worm in a transmission manner, a sound-proof shield is sleeved outside the shell and comprises an upper shield body, a connecting frame and a lower shield body which are formed by mutual combination, the upper shield body and the lower shield body are respectively composed of an inner shield body and an outer shield body, a plurality of elastic bulges are arranged in the inner shield body and are abutted against the outside of the shell, a plurality of sound absorption holes are formed in the inner shield body, a noise reduction assembly is arranged between the inner shield body and the outer shield body and comprises a noise reduction plate and a plurality of noise reduction balls which are sequentially arranged along the direction of the inner shield body towards the outer shield body, the silencing plate comprises a grid plate layer and a silencing cotton layer which are spliced with each other, and a plurality of resonance cavities are formed in the silencing ball.

Furthermore, the grid plate layer is attached to the surface of the inner cover body, the grid plate layer comprises a longitudinal sound-absorbing plate and a transverse sound-absorbing plate, and the longitudinal sound-absorbing plate and the transverse sound-absorbing plate are perpendicular to each other and are intersected to form a grid.

Further, the cotton layer of amortization is including the non-woven fabrics layer, sponge layer and the knitted fabric layer that set gradually, be equipped with the rubberised layer between one side on non-woven fabrics layer and sponge layer, be equipped with the tie coat between sponge layer and the knitted fabric layer.

Furthermore, the outer cover body is of a double-layer structure, and a vacuum cavity is formed inside the outer cover body.

Further, the link includes integrated into one piece's outer joint frame and interior joint frame, be formed with between outer joint frame and the interior joint frame with last cover body and the containing tank of the mutual adaptation of cover body down, can dismantle respectively between last cover body and the lower cover body and the outer joint frame and be connected with the fastener.

Further, the bottom of the lower cover body is provided with a buffer assembly, the buffer assembly comprises a rubber damping plate, and a plurality of damping springs are connected between the rubber damping plate and the bottom of the lower cover body.

Compared with the prior art, the scheme has the beneficial effects that:

1. the sound-proof housing is formed by last cover body, link and the lower cover body amalgamation, and cover body, link and cover body down are fixed together through fastening bolt for present the relative confined state in the sound-proof housing, in the sound-proof housing was arranged in to the speed reducer body, can keep apart speed reducer body and external environment each other, realize syllable-dividing effect.

2. Noise that mutual transmission produced between the worm gear in the casing of speed reducer body is conducted to the amortization subassembly between the inner cover body and the outer cover body by the sound absorbing hole of the inner cover body, the noise passes through net sheet layer and the cotton layer of amortization in proper order, the cotton layer of indulging the abatvoix and horizontal abatvoix and amortization on net sheet layer can play the effect of absorbing and falling the noise to the noise sound wave, and the noise can take place to resonate with the air in the resonance cavity in the amortization ball, make the kinetic energy of sound wave vibration convert heat energy consumption into, thereby further noise reduction.

3. Mutual transmission between the worm gear in the casing of speed reducer body can lead to speed reducer body vibration, and the vibration can effectively be alleviated to rubber shock attenuation board and damping spring of lower cover body bottom.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the soundproof cover according to the present invention;

fig. 3 is a schematic view of the internal structure of the housing in the present invention.

Reference numerals in the drawings of the specification include: the device comprises a motor 1, a worm 11, a shell 2, a rotating bearing 21, a rotating shaft 3, a worm wheel 31, an upper cover 4, an outer cover 41, an inner cover 42, a sound absorbing hole 43, a lower cover 5, an elastic bulge 51, a silencing ball 52, a connecting frame 6, a fastener 61, a grid plate layer 7, a silencing cotton layer 8 and a rubber damping plate 9.

Detailed Description

The utility model will be described in further detail by means of specific embodiments with reference to the accompanying drawings:

example (b):

the utility model provides a worm gear speed reducer machine of mechanism of making an uproar falls is equipped with, as shown in fig. 1 and 3, including motor 1 and speed reducer body, the speed reducer body includes casing 2, pivot 3, worm wheel 31 and worm 11, motor 1's output shaft and worm 11 coaxial coupling, the one end of pivot 3 is rotated and is connected in casing 2, worm wheel 31 fixed cover is established on pivot 3 and is engaged with the worm 11 transmission, the other end of pivot 3 runs through casing 2, and install on the casing 2 with 3 normal running fit's of pivot rolling bearing 21.

As shown in fig. 1 and 2, the outside cover of casing 2 is equipped with the sound-proof housing, the sound-proof housing includes the last cover body 4 that the intercombination formed, link 6 and the cover body 5 down, cover body 5 is run through down to 3 one end of pivot, link 6 includes integrated into one piece's outer joint frame and interior joint frame, be formed with the storage tank with the mutual adaptation of the last cover body 4 and the cover body 5 down between outer joint frame and the interior joint frame, can dismantle respectively between the last cover body 4 and the cover body 5 down and the outer joint frame and be connected with fastener 61, and this fastener 61 is fastening bolt. The bottom of the lower cover body 5 is provided with a buffer assembly, the buffer assembly comprises a rubber shock absorption plate 9, and a plurality of shock absorption springs (not shown in the figure) are connected between the rubber shock absorption plate 9 and the bottom of the lower cover body 5.

As shown in fig. 2, the upper cover 4 and the lower cover 5 are both composed of an inner cover 42 and an outer cover 41, the outer cover 41 has a double-layer structure, and a vacuum cavity is formed inside the outer cover 41; a plurality of elastic protrusions 51 are arranged in the inner cover body 42, the elastic protrusions 51 are abutted against the outside of the shell 2, a plurality of sound absorbing holes 43 are formed in the inner cover body 42, and a silencing component is arranged between the inner cover body 42 and the outer cover body 41.

As shown in fig. 2, the noise reduction assembly includes a noise reduction plate and a plurality of noise reduction balls 52 which are sequentially arranged along the direction of the inner cover body 42 to the outer cover body 41, the noise reduction plate includes a grid plate layer 7 and a noise reduction cotton layer 8 which are spliced with each other, the grid plate layer 7 is attached to the surface of the inner cover body 42, the grid plate layer 7 includes a longitudinal noise reduction plate and a transverse noise reduction plate, and the longitudinal noise reduction plate and the transverse noise reduction plate are mutually perpendicular and intersected to form a grid; the silencing cotton layer 8 comprises a non-woven fabric layer, a sponge layer and a knitted fabric layer which are sequentially arranged, a gluing layer is arranged between the non-woven fabric layer and one side of the sponge layer, a bonding layer is arranged between the sponge layer and the knitted fabric layer, and a plurality of resonance cavities are formed in the silencing balls 52.

The specific implementation mode of the scheme is as follows:

the sound-proof housing is formed by the concatenation of the upper shield body 4, link 6 and the lower cover body 5, and cover body 4, link 6 and lower cover body 5 are together fixed through fastening bolt for present the relative confined state in the sound-proof housing, in the sound-proof housing is arranged in to the speed reducer body, can keep apart the speed reducer body with external environment each other, realize syllable-dividing effect.

In the use process, the noise that mutual transmission produced between the worm wheel 31 worm 11 in the casing 2 of speed reducer body is conducted to the amortization subassembly between inner cover 42 and the outer cover 41 by the sound absorbing hole 43 of inner cover 42, the noise passes through net sheet layer 7 and the cotton layer 8 of amortization in proper order, the effect of making an uproar can play the absorption to the noise sound wave to indulge the abatvoix of net sheet layer 7 and violently abatvoix and amortization cotton layer 8, and the noise can take place the resonance with the air in the resonance cavity in the amortization ball 52, make the kinetic energy of sound wave vibration convert into heat energy consumption, thereby further noise reduction.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a worm gear speed reducer machine of mechanism of making an uproar falls is equipped with, includes motor (1) and speed reducer body, the speed reducer body includes casing (2), pivot (3), worm wheel (31) and worm (11), the output shaft and worm (11) coaxial coupling of motor (1), the one end of pivot (3) is rotated and is connected in casing (2), worm wheel (31) fixed cover is established on pivot (3) and is engaged with worm (11) transmission, its characterized in that: the sound-proof shield is sleeved outside the shell (2) and comprises an upper shield body (4), a connecting frame (6) and a lower shield body (5) which are mutually combined, the upper cover body (4) and the lower cover body (5) are both composed of an inner cover body (42) and an outer cover body (41), a plurality of elastic bulges (51) are arranged in the inner cover body (42), the elastic bulges (51) are propped against the outer part of the shell (2), a plurality of sound absorption holes (43) are arranged on the inner cover body (42), a silencing component is arranged between the inner cover body (42) and the outer cover body (41), the silencing component comprises a silencing plate and a plurality of silencing balls (52) which are sequentially arranged along the direction from the inner cover body (42) to the outer cover body (41), the sound-absorbing plate comprises a grid plate layer (7) and a sound-absorbing cotton layer (8) which are spliced with each other, and a plurality of resonance cavities are formed in the sound-absorbing ball (52).

2. The worm and gear reducer with noise reduction mechanism as set forth in claim 1, wherein: grid sheet layer (7) laminate in inner cover body (42) surface, grid sheet layer (7) are including indulging acoustical panel and horizontal acoustical panel, indulge acoustical panel and horizontal acoustical panel mutually perpendicular intersect and be latticed setting.

3. The worm and gear reducer with noise reduction mechanism as set forth in claim 1, wherein: amortization cotton layer (8) are equipped with the rubberised layer including the non-woven fabrics layer, sponge layer and the knitting fabric layer that set gradually between one side on non-woven fabrics layer and sponge layer, be equipped with the tie coat between sponge layer and the knitting fabric layer.

4. The worm and gear reducer with noise reduction mechanism as set forth in claim 1, wherein: the outer cover body (41) is of a double-layer structure, and a vacuum cavity is formed inside the outer cover body (41).

5. The worm and gear reducer with noise reduction mechanism as set forth in claim 1, wherein: link (6) are including integrated into one piece's outer joint frame and interior joint frame, be formed with between outer joint frame and the interior joint frame with the last cover body (4) and the lower storage tank of covering the mutual adaptation of body (5), can dismantle respectively between the last cover body (4) and the lower cover body (5) and the outer joint frame and be connected with fastener (61).

6. The worm and gear reducer with noise reduction mechanism as set forth in claim 1, wherein: the bottom of the lower cover body (5) is provided with a buffer assembly, the buffer assembly comprises a rubber damping plate (9), and a plurality of damping springs are connected between the rubber damping plate (9) and the bottom of the lower cover body (5).