Low-noise speed reducer

Abstract

The utility model provides a low-noise speed reducer, and belongs to the technical field of speed reducers. The low-noise speed reducer comprises a speed reducer body, a base is arranged at the bottom end of the speed reducer body, the outer wall of the base is sleeved with an outer cover, a noise reduction assembly is arranged at the top end of the outer cover, the noise reduction assembly comprises a sound absorption shell, a round hole, sound absorption cotton and a plurality of conical holes, the sound absorption cotton is installed in the sound absorption shell, and the conical holes are formed in the round hole. A plurality of conical holes are formed in the sound absorption cotton, the hole diameters of the conical holes are sequentially reduced from bottom to top, a round hole is formed in the top end of the sound absorption shell, a heat dissipation mechanism is arranged at the top end of the round hole, the base comprises a base body, a semicircular opening, an arc-shaped groove and a positioning hole, and the arc-shaped groove is formed in the top end of the base body. The speed reducer body is located in the arc-shaped groove, semicircular openings are formed in the two sides of the base body respectively, and the output end of the speed reducer body extends into the semicircular openings.

Description

Technical Field

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

[0002] The reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. 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 are generally used for transmission equipment with low speed and high torque. The purpose of reducing speed is achieved by meshing the gear with a small number of teeth on the input shaft of the reducer with the large gear on the output shaft of the motor, internal combustion engine or other high-speed power. After searching, a new type of low-noise reducer is disclosed in the Chinese patent with the authorization announcement number CN217003009U, including a body and a protective cover. A base is fixedly installed at the lower end of the body, and the protective cover is located outside the body at the upper end of the base. A cover plate is fixedly installed on the upper end of the protective cover. Ventilation holes are opened on the outer surfaces of both ends of the cover plate. A cooling fan is fixedly installed inside the cover plate. The protective cover includes a ceramic heat dissipation plate, a foam sound-absorbing plate, a sound insulation felt and an outer shell plate. The ceramic heat dissipation plate, the foam sound-absorbing plate, the sound insulation felt and the outer shell plate are sequentially covered and pasted to form a protective cover. A heat sink is connected through the outer surface of the protective cover. Positioning plates are fixedly installed at the lower ends of both sides of the protective cover, and the outer surface of the positioning plate is threaded with positioning bolts. The utility model can effectively reduce the noise of the reducer when it is working, and can improve the heat dissipation effect of the reducer, thereby extending the service life of the reducer, and has practicality.

[0003] However, in actual use of this solution, since airflow is also a medium for sound transmission, the cooling fan will transmit noise to the outside while discharging airflow to the outside of the vent, and thus cannot play an effective noise reduction role.

[0004] Therefore, we made improvements to this and proposed a low-noise reducer. Utility Model Content

[0005] In order to solve the problem that the existing reducer transmits noise by airflow, the utility model provides a low-noise reducer.

[0006] The utility model is achieved in this way:

[0007] A low-noise reducer comprises a reducer body, wherein a base is provided at the bottom end of the reducer body, an outer cover is provided on the outer wall of the base, a noise reduction component is provided on the top of the outer cover, the noise reduction component comprises a sound-absorbing shell, a circular hole, sound-absorbing cotton and a plurality of conical holes, sound-absorbing cotton is installed inside the sound-absorbing shell, a plurality of conical holes are provided inside the sound-absorbing cotton, the apertures of the plurality of conical holes are successively reduced from bottom to top, a circular hole is provided on the top of the sound-absorbing shell, and a heat dissipation mechanism is provided on the top of the circular hole.

[0008] Furthermore, the base includes a seat body, a semicircular opening, an arc groove and a positioning hole, the arc groove is arranged at the top of the seat body, the reducer body is located inside the arc groove, semicircular openings are arranged on both sides of the seat body, and the output end of the reducer body extends to the inside of the semicircular opening.

[0009] The beneficial effect of adopting the above further solution is that, through the provision of the semicircular opening, it is convenient to provide a position space for the extension of the output end of the reducer body.

[0010] Furthermore, positioning holes are respectively arranged on both sides of the outer wall of the seat body.

[0011] The beneficial effect of adopting the above further solution is that, by setting the positioning hole, a position is provided for the insertion and fixation of the locking knob.

[0012] Furthermore, the outer cover includes a soundproof cover body and an opening, and openings are respectively arranged on both sides of the outer wall of the soundproof cover body, and one side of the opening is matched with one side of the semicircular opening.

[0013] The beneficial effect of adopting the above further solution is that, through the positional relationship between the opening and the semicircular opening, the output end of the reducer body can be easily extended to the outside.

[0014] Furthermore, locking knobs are respectively threadedly connected to both sides of the outer wall of the sound insulation cover, and one end of the locking knob extends to the inside of the positioning hole.

[0015] The beneficial effect of adopting the above further solution is that the locking knob extends into the interior of the positioning hole so that the outer cover and the base can be fixed.

[0016] Furthermore, the heat dissipation mechanism includes a cylinder, a silent fan, a frame and a dust filter, and the silent fan is installed on one side of the interior of the cylinder.

[0017] The beneficial effect of adopting the above further solution is that, by installing and using a silent fan, it can accelerate the air flow inside the cylinder while helping to reduce noise.

[0018] Furthermore, a frame is installed at the top of the cylinder, and a dust filter is installed inside the frame.

[0019] The beneficial effect of adopting the above further solution is that, by installing and using the dustproof filter, it is helpful to reduce the entry of foreign impurities into the cylinder.

[0020] Furthermore, a bottom plate is installed at the bottom end of the base, and the bottom plate includes a plate body and a vibration-damping gasket, and the vibration-damping gasket is bonded to the bottom end side of the plate body.

[0021] The beneficial effect of adopting the above further solution is that, through the coordinated use of the plate body and the vibration-damping gasket, the vibration of the reducer body is reduced, thereby facilitating the improvement of the noise reduction effect.

[0022] The beneficial effect of the utility model is that through the coordinated use of the base, the outer cover, the noise reduction component and the heat dissipation mechanism, the reducer can effectively reduce the noise transmitted by the airflow while having the heat dissipation function, thereby effectively reducing the noise. Among them, by installing sound-absorbing cotton inside the sound-absorbing shell, it can absorb the noise in the internal circulating airflow, and then through the setting of the tapered hole and the characteristic of the aperture decreasing from bottom to top, it can increase the contact area between the airflow and the sound-absorbing cotton, thereby further reducing the noise. Then, through the coordinated use of the base and the outer cover, it is convenient to wrap the reducer body inside, which is beneficial to reduce the diffusion of noise, thereby reducing the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of a low-noise reducer provided by the utility model;

[0025] Figure 2 This is a schematic diagram of a low-noise reducer provided by the utility model;

[0026] Figure 3 A cross-sectional view of a noise reduction component of a low-noise reducer provided by the utility model;

[0027] Figure 4 A schematic diagram of a heat dissipation mechanism of a low-noise reducer provided by the utility model;

[0028] Figure 5 The utility model provides a bottom view of a low-noise reducer with a bottom plate expanded.

[0029] In the figure: 100, reducer body; 200, base; 2001, seat body; 2002, semicircular opening; 2003, arc groove; 2004, positioning hole; 300, outer cover; 3001, sound insulation cover; 3002, opening; 400, noise reduction component; 4001, sound absorbing shell; 4002, round hole; 4003, sound absorbing cotton; 4004, conical hole; 500, heat dissipation mechanism; 5001, cylinder; 5002, silent fan; 5003, frame; 5004, dust filter; 600, bottom plate; 6001, plate body; 6002, vibration damping gasket; 700, locking knob. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 5The utility model provides a technical solution: a low-noise reducer, including a reducer body 100, a base 200 is provided at the bottom end of the reducer body 100, an outer cover 300 is provided on the outer wall of the base 200, a noise reduction component 400 is provided on the top of the outer cover 300, the noise reduction component 400 includes a sound-absorbing shell 4001, a round hole 4002, sound-absorbing cotton 4003 and a plurality of conical holes 4004, the sound-absorbing shell 4001 is installed with the sound-absorbing cotton 4003, the sound-absorbing cotton 4003 is provided with a plurality of conical holes 4004, the apertures of the plurality of conical holes 4004 are reduced from bottom to top, and the sound-absorbing shell 4001 A circular hole 4002 is provided at the top, and a heat dissipation mechanism 500 is provided at the top of the circular hole 4002. A sound-absorbing cotton 4003 is installed inside the sound-absorbing shell 4001 to absorb the noise in the internal circulating airflow. Then, through the setting of the tapered hole 4004 and the characteristic that the aperture decreases from bottom to top, the contact area between the airflow and the sound-absorbing cotton 4003 can be increased, thereby further achieving the effect of noise reduction. Then, through the coordinated use of the base 200 and the outer cover 300, it is convenient to wrap the reducer body 100 inside, which is beneficial to reduce the diffusion of noise, thereby achieving the effect of reducing noise.

[0034] Embodiment 2

[0035] See also Figure 1-Figure 5 As an embodiment of the present invention, further, the base 200 includes a base body 2001, a semicircular opening 2002, an arc groove 2003 and a positioning hole 2004. The top of the base body 2001 is provided with an arc groove 2003, the reducer body 100 is located inside the arc groove 2003, and the two sides of the base body 2001 are respectively provided with semicircular openings 2002. The output end of the reducer body 100 extends to the inside of the semicircular opening 2002. The setting of the semicircular opening 2002 facilitates the extension of the output end of the reducer body 100. To provide positioning space, positioning holes 2004 are respectively set on both sides of the outer wall of the seat body 2001. The positioning holes 2004 are set to provide a position for the insertion and fixation of the locking knob 700. The outer cover 300 includes a soundproof cover body 3001 and an opening 3002. The openings 3002 are respectively set on both sides of the outer wall of the soundproof cover body 3001. One side of the opening 3002 is consistent with one side of the semicircular opening 2002. Through the positional relationship between the opening 3002 and the semicircular opening 2002, the output end of the reducer body 100 is convenient to extend to the outside.

[0036] Embodiment 3

[0037] See also Figure 1-Figure 5As an embodiment of the present invention, further, both sides of the outer wall of the soundproof cover 3001 are respectively threadedly connected with locking knobs 700, one end of the locking knob 700 extends to the inside of the positioning hole 2004, and the heat dissipation mechanism 500 includes a cylinder 5001, a silent fan 5002, a frame 5003 and a dust filter 5004. The silent fan 5002 is installed on one side of the inner part of the cylinder 5001. By installing and using the silent fan 5002, it can accelerate the airflow inside the cylinder 5001, which is conducive to reducing noise. A frame 5003 is installed on the top of 5001, and a dust filter 5004 is installed inside the frame 5003. The installation and use of the dust filter 5004 is conducive to reducing the entry of foreign matter into the cylinder 5001. A bottom plate 600 is installed at the bottom end of the base 200. The bottom plate 600 includes a plate body 6001 and a vibration-damping gasket 6002. The vibration-damping gasket 6002 is adhered to the side of the bottom end of the plate body 6001. The coordinated use of the plate body 6001 and the vibration-damping gasket 6002 is conducive to reducing the vibration of the reducer body 100, thereby helping to improve the noise reduction effect.

[0038] Specifically, the working principle of the low-noise reducer is as follows: when in use, first, move the reducer to the designated working area, start the reducer, and conduct an operation test. After ensuring normal operation, put it into use. The silent fan 5002 is started to agitate the internal airflow of the cylinder 5001. At the same time, the installation and use of the dust filter 5004 is helpful to reduce the entry of external impurities into the cylinder 5001. The sound-absorbing cotton 4003 is installed inside the sound-absorbing shell 4001 to reduce the noise in the internal circulating airflow. The sound-absorbing cotton 4003 is used to absorb the noise, and then the conical hole 4004 is set, and the aperture gradually decreases from bottom to top, so that the contact area between the airflow and the sound-absorbing cotton 4003 can be increased, thereby further reducing the noise. The base 200 and the outer cover 300 are used in conjunction with each other, so that the reducer body 100 can be wrapped inside, which is beneficial to reduce the diffusion of noise, thereby reducing the noise. The locking knob 700 extends to the inside of the positioning hole 2004, so that the outer cover 300 and the base 200 can be fixed.

[0039] It should be noted that the specific model and specifications of the silent fan 5002 need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0040] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A low-noise reducer, comprising a reducer body (100), characterized in that: A base (200) is provided at the bottom end of the reducer body (100); an outer cover (300) is provided on the outer wall of the base (200); a noise reduction component (400) is provided at the top end of the outer cover (300); the noise reduction component (400) comprises a sound absorbing shell (4001), a circular hole (4002), sound absorbing cotton (4003) and a plurality of conical holes (4004); sound absorbing cotton (4003) is installed inside the sound absorbing shell (4001); a plurality of conical holes (4004) are provided inside the sound absorbing cotton (4003); the apertures of the plurality of conical holes (4004) decrease in sequence from bottom to top; a circular hole (4002) is provided at the top end of the sound absorbing shell (4001); a heat dissipation mechanism (500) is provided at the top end of the circular hole (4002).

2. The low noise reducer according to claim 1, characterized in that: The base (200) comprises a base body (2001), a semicircular opening (2002), an arc-shaped groove (2003) and a positioning hole (2004); the arc-shaped groove (2003) is arranged at the top of the base body (2001); the reducer body (100) is located inside the arc-shaped groove (2003); the semicircular openings (2002) are respectively arranged on both sides of the base body (2001); and the output end of the reducer body (100) extends to the inside of the semicircular opening (2002).

3. The low noise reducer according to claim 2, characterized in that: Positioning holes (2004) are respectively arranged on both sides of the outer wall of the seat body (2001).

4. The low noise reducer according to claim 3, characterized in that: The outer cover (300) comprises a soundproof cover body (3001) and an opening (3002); the openings (3002) are respectively arranged on both sides of the outer wall of the soundproof cover body (3001); one side of the opening (3002) is matched with one side of the semicircular opening (2002).

5. The low noise reducer according to claim 4, characterized in that: Locking knobs (700) are respectively threadedly connected to the outer wall of the soundproof cover (3001), and one end of the locking knob (700) extends to the inside of the positioning hole (2004).

6. The low noise reducer according to claim 1, characterized in that: The heat dissipation mechanism (500) comprises a cylinder (5001), a silent fan (5002), a frame (5003) and a dust filter (5004), wherein the silent fan (5002) is installed on one side of the interior of the cylinder (5001).

7. The low noise reducer according to claim 6, characterized in that: A frame (5003) is installed at the top of the cylinder (5001), and a dust filter (5004) is installed inside the frame (5003).

8. The low noise reducer according to claim 1, characterized in that: A bottom plate (600) is installed at the bottom end of the base (200), the bottom plate (600) comprising a plate body (6001) and a vibration-damping gasket (6002), and the vibration-damping gasket (6002) is bonded to the bottom side of the plate body (6001).

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