CN219242607U

CN219242607U - Noise reduction mechanism of speed reducer and speed reducer with same

Info

Publication number: CN219242607U
Application number: CN202223587307.5U
Authority: CN
Inventors: 韩崇; 顾利纳
Original assignee: Feiteng Precision Transmission Zhejiang Co ltd
Current assignee: Feiteng Precision Transmission Zhejiang Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-23
Anticipated expiration: 2032-12-28

Abstract

The application relates to a speed reducer mechanism of making an uproar and speed reducer that has this mechanism belongs to reduction gear technical field. The novel noise reduction box comprises a plurality of arc noise reduction pieces which are arranged at intervals on the bottom surface of the inner cavity of the box body, wherein the arc openings of the arc noise reduction pieces face the central axis of the box body. The noise in the speed reducer is rebounded and weakened between the arc noise reduction sheets through the arc noise reduction sheets, so that the influence of noise generated by gear engagement on staff is reduced.

Description

Noise reduction mechanism of speed reducer and speed reducer with same

Technical Field

The application relates to the technical field of speed reducers, in particular to a speed reducer noise reduction mechanism and a speed reducer with the same.

Background

The speed reducer is an independent component consisting of gear transmission, worm transmission and gear worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between an actuating mechanism and an output motor.

Gear reducers are generally used to output a high speed, low torque output motor into a low speed, high torque output to an actuator. The speed reducer generally includes a housing, a gear input shaft disposed in the housing, and a gear output shaft mated with the input shaft. The gear input shaft is matched with a motor shaft gear of the motor, and the gear input shaft and the gear output shaft are in meshed transmission through gears. When the gears are meshed for transmission, more noise can be generated, and the excessive noise can influence the judgment of the working condition of the machine by workers.

Disclosure of Invention

In order to reduce the influence of noise generated by meshing of gears of a speed reducer on staff, the application provides a speed reducer noise reduction mechanism and a speed reducer with the same.

The application provides a speed reducer mechanism of making an uproar falls adopts following technical scheme:

the utility model provides a mechanism of making an uproar falls in speed reducer, includes a plurality of arc pieces of making an uproar that fall of interval arrangement that set up in the box inner chamber bottom surface, the arc mouth of piece of making an uproar falls towards the central axis department of box falls.

Through adopting above-mentioned technical scheme, when the speed reducer starts the operation, gear engagement can produce more noise, through arranging a plurality of arc pieces of making an uproar in the closed box of speed reducer for noise sound wave can make a round trip to vibrate between the arc piece of making an uproar that makes an uproar, thereby weaken the sound wave.

Optionally, the width of one end of the arc noise reduction sheet gradually expands to the width of the other end.

Through adopting above-mentioned technical scheme, because gear engagement is in the bottom in the box, when noise begins to make a round trip to vibrate between the piece of making an uproar falls in the arc, set up the piece of making an uproar falls in the arc into the width by one end to the expansion of the other end, the width of the one end that the piece of making an uproar falls in the arc promptly is greater than the width of the one end of keeping away from the box bottom surface laminating with the box bottom surface for the piece of making an uproar falls in the arc plays the effect of weakening gradually to noise sound wave, and the effect of making an uproar falls is more ideal.

Optionally, the arc noise reduction pieces are arranged at equal intervals, and the arc length of the arc noise reduction pieces is gradually enlarged from the center to the edge, and the arc noise reduction pieces are coaxially arranged with the central axis of the box body.

Through adopting above-mentioned technical scheme, with the arc length of arc piece of making an uproar that falls along center department to the border enlarges gradually, and with equidistant ground with the box center coaxial arrangement of all arc pieces of making an uproar that falls for the arc makes an uproar piece of falling is whole in the overall arrangement of box comparatively reasonable, and is comparatively ideal to the effect of the loss of sound wave.

Optionally, first sound cotton that inhales is provided with between the adjacent arc piece of making an uproar falls, first sound cotton both sides terminal surface of inhaling with the arc piece of making an uproar falls.

Through adopting above-mentioned technical scheme, after the attenuation of the piece of making an uproar falls in the arc of sound wave, through the first sound cotton of inhaling that sets up at adjacent arc piece of making an uproar falls, can absorb the noise after weakening again and weaken, can improve the noise reduction effect of making an uproar mechanism of making an uproar.

Optionally, the limiting groove is set up at the arc mouth of the arc piece of making an uproar that falls, the first lateral wall of inhaling the sound cotton have with limiting groove grafting complex spacing lug.

Through adopting above-mentioned technical scheme, when carrying out the first installation of inhaling the sound cotton, with the spacing groove of the piece of making an uproar of falling of arc and the first spacing lug of inhaling the sound cotton of inhaling peg graft the cooperation for first inhale the sound cotton and can be fixed in between the piece of making an uproar of falling of adjacent two arcs, reduced first inhale the sound cotton and take place the probability of removing at the piece of making an uproar of adjacent arcs.

Optionally, the first sound-absorbing cotton is arranged in a fan shape from the inside to the outside.

Through adopting above-mentioned technical scheme, be fan-shaped first inhale the sound cotton of arranging, the overall arrangement is comparatively reasonable, can be better to the absorption effect of the noise sound wave after the arc piece of making an uproar weakens.

Optionally, the top surface of the first sound absorbing cotton is flush with the top surface of the arc noise reduction sheet.

By adopting the technical scheme, if the top surface of the first sound-absorbing cotton is lower than the top surface of the arc-shaped noise-reducing sheet, noise waves can be transmitted in the gap between the top surface of the first sound-absorbing cotton and the top surface of the arc-shaped noise-reducing sheet, and the absorption of the noise waves is reduced; if the top surface of the first sound-absorbing cotton is higher than the top surface of the arc-shaped noise-reducing sheet, the part of the first sound-absorbing cotton higher than the arc-shaped noise-reducing sheet absorbs less noise after weakening.

Optionally, a plurality of second sound absorbing cottons are arranged at the arc openings of the outermost arc noise reduction sheets.

By adopting the technical scheme, because the arc length of the arc noise reduction sheet at the outermost side is longer, the absorption range of one piece of sound absorption cotton is limited, and a plurality of pieces of sound absorption cotton are required to be arranged for absorbing noise waves.

Optionally, the second sound-absorbing cotton and the first sound-absorbing cotton are staggered.

Through adopting above-mentioned technical scheme, inhale the sound cotton with the first sound cotton staggered arrangement of inhaling of second for inhale the absorption scope expansion of sound cotton, it is comparatively ideal to the noise sound wave absorption after weakening.

The application also provides a speed reducer, which adopts the following technical scheme

The speed reducer comprises a box body, wherein a gear input shaft, a gear output shaft and a box cover are arranged in the box body, the speed reducer further comprises the speed reducer noise reduction mechanism, and the speed reducer is arranged on the bottom surface of an inner cavity of the box body.

Through adopting above-mentioned technical scheme, when using the speed reducer, through being provided with the arc piece of making an uproar that falls for the noise sound wave that gear engagement produced makes an uproar at the arc piece of making an uproar and propagates the loss, and noise sound wave after the loss can be absorbed by the sound cotton of inhaling of arranging in adjacent arc piece of making an uproar that falls, adopts foretell speed reducer, makes the noise that will transmit outside the box weaken more, reduces the influence of noise to the staff.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the noise reduction mechanism of the speed reducer is provided with a plurality of arc noise reduction pieces, so that noise generated by meshing of gears of the speed reducer can vibrate back and forth between the arc noise reduction pieces, and sound waves are attenuated to a certain extent;

2. the first sound absorbing cotton is arranged between the adjacent arc-shaped noise reduction sheets, so that the weakened noise can be absorbed and weakened again, and the noise reduction effect of the noise reduction mechanism is improved;

3. through the spacing groove of the arc piece of making an uproar and the setting of the spacing lug of first inhaling the sound cotton for first inhale the sound cotton can be fixed in between two adjacent arc pieces of making an uproar that make an uproar, reduced first inhale the sound cotton and take place the probability that removes at adjacent arc piece of making an uproar that makes an uproar.

Drawings

Fig. 1 is a schematic diagram of a structure of a noise reduction mechanism of a speed reducer in embodiment 1.

Fig. 2 is a partial enlarged view at a in fig. 1.

Fig. 3 is an exploded schematic view of a speed reducer with a noise reduction mechanism in embodiment 2.

Reference numerals illustrate: 1. arc noise reduction sheets; 11. a limit groove; 2. a first sound absorbing cotton; 21. a limit bump; 3. a second sound-absorbing cotton; 4. a case; 41. a gear input shaft; 42. a gear output shaft; 43. a case cover; 431. positioning holes; 432. a countersunk head groove; 4321. a fixing through hole; 4322. a fixing bolt; 44. an abutting portion; 441. positioning columns; 442. fixing screw holes.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a speed reducer mechanism of making an uproar falls and has speed reducer of this mechanism.

Example 1:

referring to fig. 1, a noise reduction mechanism of a speed reducer comprises a plurality of arc noise reduction sheets 1 arranged on the inner bottom surface of a speed reducer box 4 and sound absorbing cotton arranged between adjacent arc noise reduction sheets 1.

Referring to fig. 1, an arc-shaped noise reduction sheet 1 is integrally injection-molded with a case 4 of a speed reducer. The arc noise reduction sheet 1 is sheet-shaped as a whole. The arc mouth of arc piece of making an uproar 1 falls towards the center department of box 4 for can play the effect of gathering to the noise that the inside gear meshing of speed reducer produced, thereby make the noise can make a round trip the bounce-back vibration between the piece of making an uproar 1 of making an uproar, play the effect of weakening the noise.

The adjacent arc-shaped noise reduction sheets 1 are arranged at equal intervals. In this embodiment, the arc noise reduction sheets 1 are provided with five sheets in total, and the five arc noise reduction sheets 1 are all coaxially arranged with the center of the bottom surface of the case 4 as an axis. The arc length of the arc noise reduction sheet 1 gradually expands from the center of the box body 4 to the edge of the box body 4, so that the space inside the box body 4 can be reasonably filled.

The width of one end of the arc noise reduction sheet 1 is gradually enlarged to the width of the other end, that is, the width of the cross section parallel to the bottom surface of the box body 4 in the arc noise reduction sheet 1 is gradually enlarged upwards from the bottom surface of the box body 4. Because the gear arrangement of speed reducer is in the bottom of box 4, the noise is upwards propagated by the bottom, so the arc piece 1 of making an uproar that falls that adopts above-mentioned structure can play the effect of weakening step by step to the noise that box 4 bottom surface produced.

Referring to fig. 1 and 2, the sound-absorbing cotton includes a first sound-absorbing cotton 2 and a second sound-absorbing cotton 3. The first sound absorbing cotton 2 is arranged between the innermost arc noise reduction sheet 1 and the fourth arc noise reduction sheet 1 from inside to outside. The two side end surfaces of the first sound absorbing cotton 2 are abutted against the side walls of the adjacent arc-shaped noise reduction sheets 1. The middle part of the arc opening of the arc noise reduction sheet 1 is provided with a limit groove 11 penetrating through the upper end face and the lower end face. The side surface of the first sound-absorbing cotton 2 is provided with a limit bump 21 which is in plug-in fit with the limit groove 11. In this embodiment, the first sound-absorbing cotton 2 is provided with three pieces, and the three pieces of first sound-absorbing cotton 2 are arranged in a fan shape. The arc length of the first sound absorbing cotton 2 is gradually enlarged from the center to the outside.

After the limit bump 21 of the first sound-absorbing cotton 2 is in plug-in connection with the limit groove 11 of the arc-shaped noise-reducing sheet 1, the top surface of the first sound-absorbing cotton 2 is flush with the top surface of the arc-shaped noise-reducing sheet 1.

Referring to fig. 1, the second sound absorbing cotton 3 is disposed at an outermost arc opening in the arc noise reduction sheet 1. The installation mode of the second sound-absorbing cotton 3 on the arc-shaped noise-reducing sheet 1 is identical to the installation mode of the first sound-absorbing cotton 2. Since the outermost arc-shaped noise reduction sheet 1 has a long length, a plurality of second sound absorbing cottons 3 are required to be provided so that the range of absorption of noise waves is large. In this embodiment, two second sound-absorbing cottons 3 are arranged, the two second sound-absorbing cottons 3 are spaced in the arc opening of the arc noise-reducing sheet 1, and the second sound-absorbing cottons 3 are staggered with the first sound-absorbing cottons 2.

The implementation principle of the noise reduction mechanism of the speed reducer in the embodiment 1 is as follows: when the speed reducer starts to operate, the gears in the box body 4 are meshed to generate noise, the noise bounces back and forth between the arc-shaped noise reduction sheets 1 to finish preliminary weakening, and the weakened noise can be absorbed by the sound absorbing cotton, so that the noise finally transferred to the outside of the box body 4 is greatly reduced.

The embodiment of the application also discloses a speed reducer, and the speed reducer noise reduction mechanism in the embodiment is applied.

Referring to fig. 3, the speed reducer includes a case 4 having an opening at the top, a speed reducing assembly disposed in the case 4, a noise reducing mechanism disposed at the bottom of the case 4, and a case cover 43 for covering the opening of the case 4. The housing 4 has a mounting cavity with a circular cross-section. The arc-shaped noise reduction pieces 1 in the noise reduction mechanism are coaxially arranged with the axis of the installation cavity.

Referring to fig. 3, the reduction assembly includes a gear input shaft 41 for mating with a motor shaft, and a gear output shaft 42 for outputting torque. The gear input shaft 41 and the gear output shaft 42 are driven by gear engagement. In this embodiment, bevel gears are selected for gear engagement.

Referring to fig. 3, the inner wall of the case 4 has an abutment 44 for the outer edge of the case cover 43. The end surface of the abutment 44 is provided vertically upward with a positioning column 441. The end surface of the case cover 43 is provided with a positioning hole 431 for inserting the positioning column 441. By the engagement of the positioning posts 441 and the positioning holes 431, the predetermined positioning of the cover 43 on the case 4 is enabled.

Referring to fig. 3, the case cover 43 is provided with countersunk grooves 432 at intervals in the circumferential direction away from the outer end surface of the case body 4. The bottom plate of the countersunk head groove 432 is provided with a through fixing through hole 4321, and a fixing bolt 4322 is arranged at the fixing through hole 4321. The nut of the fixing bolt 4322 is positioned in the countersunk groove 432, i.e., the height of the nut of the fixing bolt 4322 is lower than the depth of the countersunk groove 432. The abutment portion 44 has a fixing screw hole 442 into which the fixing bolt 4322 is screwed.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The noise reduction mechanism of the speed reducer is characterized by comprising a plurality of arc noise reduction pieces (1) which are arranged at intervals on the bottom surface of an inner cavity of a box body (4), wherein the arc openings of the arc noise reduction pieces (1) face the central axis of the box body (4);

the width of one end of the arc noise reduction sheet (1) gradually expands towards the width of the other end;

the arc-shaped noise reduction sheets (1) are arranged at equal intervals, the arc-shaped length of the arc-shaped noise reduction sheets (1) is gradually enlarged from the center to the edge, and the arc-shaped noise reduction sheets (1) are coaxially arranged with the central axis of the box body (4).

2. The noise reduction mechanism of the speed reducer according to claim 1, wherein first sound absorbing cottons (2) are arranged between adjacent arc noise reduction sheets (1), and two side end surfaces of the first sound absorbing cottons (2) are abutted with the arc noise reduction sheets (1).

3. The noise reduction mechanism of the speed reducer according to claim 2, wherein the arc opening of the arc noise reduction sheet (1) is provided with a limit groove (11), and the side wall of the first sound absorption cotton (2) is provided with a limit bump (21) which is in plug-in fit with the limit groove (11).

4. A reducer noise reduction mechanism according to claim 3, characterized in that the first sound absorbing cotton (2) is arranged in a fan shape from the inside to the outside.

5. A reducer noise reduction mechanism according to claim 2, characterized in that the top surface of the first sound absorbing cotton (2) is flush with the top surface of the arcuate noise reduction sheet (1).

6. The noise reduction mechanism of a speed reducer according to claim 2, wherein a plurality of second sound absorbing cottons (3) are provided at the arc openings of the outermost arc noise reduction pieces (1).

7. A reducer noise reduction mechanism according to claim 6, characterized in that the second sound absorbing cotton (3) is staggered with the first sound absorbing cotton (2).

8. The speed reducer comprises a box body (4), wherein a gear input shaft (41), a gear output shaft (42) and a box cover (43) are arranged in the box body (4), and the speed reducer is characterized by further comprising the speed reducer noise reduction mechanism according to claim 1, and the speed reducer is arranged on the bottom surface of an inner cavity of the box body (4).