A noise reduction box structure for a gear reducer

Abstract

The utility model relates to a speed reducer technical field especially is a kind of for the noise reduction box structure of gear speed reducer, including outer box, the both sides of outer box inner chamber are all fixedly connected with fixed link, the surface of fixed link both ends is all slidingly connected with sliding block. The utility model has the advantages of excellent damping and noise reduction function, in actual use process, by the cooperation of outer box, fixed link, sliding block, first spring, adjusting rod, fixed frame and inner box, the damping of inner box can be effectively realized, to improve stability and comfort, reduce the influence to internal structure, prolong service life, by the synergistic effect with sliding rod and second spring, further enhance the damping effect, can provide additional support to different vibration frequency, ensure that box can maintain stable operation in various working environments, avoid the failure or instability phenomenon caused by vibration.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a noise reduction box structure for a gear reducer. Background Technology

[0002] As an important component of mechanical transmission systems, gear reducers are widely used in various industrial equipment, especially in fields such as automated production, lifting equipment, and conveying systems. Due to their high-speed operation during power transmission and the mechanical actions such as friction and collision between gears, gear reducers inevitably generate considerable noise during operation. This noise not only adversely affects the working environment of operators but also leads to premature wear of equipment, increases maintenance costs, and even affects the long-term stability and working efficiency of the equipment.

[0003] As disclosed in CN220956718U, a noise reduction box structure for a gear reducer includes a base and a top cover, which have the same structure. The base includes an outer shell and an inner shell. A gear set of the gear reducer is fixedly installed inside the inner shell. A noise reduction component is fixedly installed inside the gap between the outer shell and the inner shell. The noise reduction component includes a docking plate, and a sound-absorbing plate and a heat dissipation plate are fixedly installed at the bottom of the docking plate. This relates to the field of noise reduction box structure technology. By setting a double-layer structure of outer shell and inner shell, the noise reduction component is installed between the double-layer structure of the inner shell. This allows sound waves to enter the sound-absorbing plate and heat dissipation plate when the gear set is working, and reciprocate to collide with the through holes inside, thereby consuming the energy of the sound waves, reducing the sound wave transmission range, and thus improving the noise reduction and quietness effect of the equipment.

[0004] While the aforementioned patents can achieve noise reduction to some extent, their effect is still unsatisfactory. Although simple noise reduction structural designs can reduce some noise, they do not fundamentally solve the vibration problem generated during the operation of the gear reducer. These vibrations not only affect the smooth operation of the machine, but also transmit to other parts of the noise reduction box through the structure, generating secondary noise and thus reducing the noise reduction effect. Therefore, relying solely on traditional noise reduction box structures cannot completely eliminate the vibration noise of the reducer. It is necessary to combine more effective vibration reduction technology with optimized structural design to achieve the ideal noise reduction effect. Utility Model Content

[0005] The purpose of this invention is to provide a noise reduction box structure for gear reducers, which has the advantages of excellent vibration reduction and noise reduction functions, and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction box structure for a gear reducer, comprising an outer box, with fixed rods fixedly connected to both sides of the inner cavity of the outer box, sliders slidably connected to the surfaces of both ends of the fixed rods, a first spring fixedly connected to the opposite side of the two sliders, and the first spring sleeved on the surface of the fixed rods, an adjusting rod rotatably connected to the inner cavity of the top of the two sliders, a fixed frame rotatably connected to the other end of the two adjusting rods, an inner box fixedly connected to the top of several fixed frames, a honeycomb panel fixedly connected to the surfaces of the outer box and the inner box, the honeycomb holes on the surface of the honeycomb panel being filled with sound-absorbing cotton, two sliding rods fixedly connected to the surfaces around the inner box, the other ends of several sliding rods penetrating to the outside of the outer box, a second spring fixedly connected to the surface of the sliding rod, one end of the second spring fixedly connected to the outer wall of the inner box, and the other end of the second spring fixedly connected to the inner wall of the outer box.

[0007] Furthermore, as a preferred embodiment of this utility model, the bottom inner cavity of the outer casing is provided with sliding grooves on both sides, and the slider is slidably connected to the inner cavity of the sliding groove.

[0008] Furthermore, as a preferred embodiment of this utility model, a mounting plate is fixedly connected to the bottom of the outer casing, and bolts are threaded to the four corners of the mounting plate.

[0009] Furthermore, as a preferred embodiment of this utility model, two dampers are fixedly connected to the inner cavity of the outer casing, and the other ends of the two dampers are fixedly connected to the bottom of the inner casing.

[0010] Furthermore, as a preferred embodiment of this utility model, a plurality of strip-shaped noise-absorbing grooves are fixedly connected to the outer side wall of the outer casing. The strip-shaped noise-absorbing grooves extend along the axial direction of the outer casing, and the spacing between adjacent strip-shaped noise-absorbing grooves is set to 20-30mm.

[0011] Beneficial Effects: The technical solution of this application has the following advantages: This utility model has the advantages of excellent vibration reduction and noise reduction functions. In actual use, through the cooperation of the outer box, fixing rod, slider, first spring, adjusting rod, fixing frame and inner box, the vibration of the inner box can be effectively reduced, thereby improving stability and comfort, reducing the impact on the internal structure, and extending service life. Through the synergistic effect with the slider and second spring, the vibration reduction effect is further enhanced, and additional support can be provided for different vibration frequencies to ensure that the box can maintain stable operation in various working environments and avoid failures or instability caused by vibration. The combination of honeycomb panel and sound-absorbing cotton plays a key role. The honeycomb panel, through its special structure and materials, can effectively isolate noise sources and reduce noise propagation through sound wave reflection and dispersion. At the same time, the sound-absorbing cotton has excellent sound wave absorption capacity, which can effectively reduce low-frequency and mid-frequency noise, further improve the noise reduction effect, create a quieter working environment, and has significant practical value and superior performance.

[0012] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the device of this utility model; Figure 3 This is a schematic diagram of the second spring structure of this utility model; Figure 4 This is a schematic cross-sectional view of the honeycomb panel structure of this utility model; Figure 5 This is a schematic cross-sectional view of the outer casing structure of this utility model.

[0014] In the figure, the meanings of the various reference numerals are as follows: 1. Outer housing; 2. Fixing rod; 3. Sliding block; 4. First spring; 5. Adjusting rod; 6. Fixing frame; 7. Inner housing; 8. Honeycomb panel; 9. Sound-absorbing cotton; 10. Sliding rod; 11. Second spring; 12. Slide groove; 13. Mounting plate; 14. Bolt; 15. Damper; 16. Strip-shaped sound-absorbing groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. To better understand the technical content of the present utility model, specific embodiments are provided and described in conjunction with the accompanying drawings. Various aspects of the present utility model are described in this disclosure with reference to the accompanying drawings, which show many illustrative embodiments. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0016] As attached Figure 1 To be continued Figure 5 As shown: This embodiment provides a noise reduction box structure for a gear reducer, including an outer box 1. Fixed rods 2 are fixedly connected to both sides of the inner cavity of the outer box 1. Slider blocks 3 are slidably connected to the surfaces of both ends of the fixed rods 2. A first spring 4 is fixedly connected to the opposite side of the two sliders 3, and the first spring 4 is sleeved on the surface of the fixed rods 2. Adjusting rods 5 are rotatably connected to the inner cavities at the top of the two sliders 3. Fixed brackets 6 are rotatably connected to the other ends of the two adjusting rods 5. An inner box 7 is fixedly connected to the top of several fixed brackets 6. Honeycomb panels 8 are fixedly connected to the surfaces of both the outer box 1 and the inner box 7. Sound-absorbing cotton 9 is filled into the honeycomb holes on the surface of the honeycomb panels 8. Two sliding rods 10 are fixedly connected to the surfaces around the inner box 7. The other ends of several sliding rods 10 extend to the outside of the outer box 1. A second spring 11 is fixedly connected to the surface of the sliding rod 10. One end of the second spring 11 is fixedly connected to the outer wall of the inner box 7, and the other end of the second spring 11 is fixedly connected to the inner wall of the outer box 1.

[0017] Specifically, the bottom inner cavity of the outer casing 1 has grooves 12 on both sides, and the slider 3 is slidably connected to the inner cavity of the grooves 12.

[0018] In this embodiment, the slide groove 12 serves a dual purpose of guiding and limiting, ensuring that the slider 3 maintains stability during sliding, making it less prone to deviation when sliding laterally, and effectively limiting the maximum sliding range of the slider to prevent it from exceeding the predetermined path, thus ensuring the stability of the overall structure and the accurate execution of its functions.

[0019] Specifically, the bottom of the outer casing 1 is fixedly connected to a mounting plate 13, and bolts 14 are threaded to the four corners of the mounting plate 13.

[0020] In this embodiment, by using the mounting plate 13 and bolts 14 together, the device can be firmly fixed in the predetermined position, ensuring stability during use and preventing the device from loosening or shifting due to external interference or vibration, thus enhancing its shock resistance.

[0021] Specifically, two dampers 15 are fixedly connected to the inner cavity of the outer housing 1, and the other ends of the two dampers 15 are fixedly connected to the bottom of the inner housing 7.

[0022] In this embodiment, the damper 15 can effectively suppress resonance and reduce vibration amplitude, thereby improving the stability and performance of the device and avoiding vibration amplification and noise increase caused by resonance. Especially in the case of high-frequency vibration or periodic vibration, it can effectively reduce dynamic response.

[0023] Specifically, a number of strip-shaped noise reduction grooves 16 are fixedly connected to the outer side wall of the outer casing 1. The strip-shaped noise reduction grooves 16 extend along the axial direction of the outer casing 1, and the spacing between adjacent strip-shaped noise reduction grooves 16 is set to 20-30mm.

[0024] In this embodiment, the setting of the strip-shaped noise reduction groove 16 can effectively reduce noise and improve the working environment. By increasing the path of sound wave propagation, the sound is reflected and scattered when passing through the noise reduction groove, thereby reducing the intensity of noise.

[0025] The working principle and usage of this utility model are as follows: When the inner box 7 is subjected to vertical vibration force, the force is transmitted to the two symmetrically inclined adjusting rods 5 through the bottom fixing frame 6. Since the two ends of the adjusting rods 5 are rotatably connected to the fixing frame 6 and the sliders 3 respectively, the vertical force is decomposed into a component force along the axial direction of the adjusting rod, pushing the two sliders 3 to slide laterally in opposite directions along the fixing rod 2 and the slide groove 12. At this time, the first spring 4 sleeved on the surface of the fixing rod 2 will be compressed or stretched due to the relative movement of the sliders 3. The elastic deformation of the inner box 7 absorbs the vertical vibration energy, converting the vibration kinetic energy into elastic potential energy, thus achieving initial attenuation of the vertical vibration. Simultaneously, the damper 15 inside the outer box 1 works in conjunction with the spring, consuming vibration energy through the damping effect of the damper 15, preventing resonance-induced amplification of the vibration amplitude, and rapidly attenuating the vibration amplitude of the inner box 7. When the inner box 7 vibrates horizontally, the sliding rod 10 fixedly connected around it will move horizontally synchronously with the inner box 7, thereby driving the second spring 11 sleeved on the surface of the sliding rod 10 to vibrate. The second spring 11, through its elastic restoring force, counteracts the horizontal vibration force and absorbs the horizontal vibration energy. Simultaneously, the sliding rod 10, in conjunction with the outer housing 1, acts as a guide and limiter, preventing the inner housing 7 from shifting during vibration. This ensures stable buffering of horizontal vibration and avoids secondary noise caused by resonance. The sound generated by the reducer radiates outwards. The honeycomb panel 8 fixed to the inner wall of the inner housing 7 and the sound-absorbing cotton 9 constitute a double-layer sound-absorbing barrier. The honeycomb structure of the honeycomb panel 8 increases the installation area and contact area with noise of the sound-absorbing cotton 9, while also weakening noise reflection and reducing the superposition of noise reflection within the inner housing 7. After double-layer sound absorption by the inner housing 7 and outer housing 1, residual noise still radiating outwards acts on the outer wall of the outer housing 1. The strip-shaped silencing groove 16 of the outer housing 1 extends axially, not only increasing the surface area of ​​the outer housing 1 and reducing the noise radiation intensity per unit area, but also disrupting the noise propagation path, further suppressing the directional propagation of noise, and ultimately reducing outward-radiated noise.

[0026] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0027] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A noise reduction box structure for a gear reducer, comprising an outer casing (1), characterized in that: Both sides of the inner cavity of the outer casing (1) are fixedly connected to fixed rods (2). The surfaces of both ends of the fixed rods (2) are slidably connected to sliders (3). The opposite sides of the two sliders (3) are fixedly connected to a first spring (4), and the first spring (4) is sleeved on the surface of the fixed rods (2). The inner cavities at the top of the two sliders (3) are rotatably connected to adjusting rods (5). The other ends of the two adjusting rods (5) are rotatably connected to fixed frames (6). The tops of several fixed frames (6) are fixedly connected to an inner casing (7). The outer casing (1) A honeycomb panel (8) is fixedly connected to the surface of the inner box (7). The honeycomb holes on the surface of the honeycomb panel (8) are filled with sound-absorbing cotton (9). Two sliding rods (10) are fixedly connected to the surface of the inner box (7). The other end of several sliding rods (10) extends to the outside of the outer box (1). A second spring (11) is fixedly connected to the surface of the sliding rod (10). One end of the second spring (11) is fixedly connected to the outer wall of the inner box (7), and the other end of the second spring (11) is fixedly connected to the inner wall of the outer box (1).

2. The noise reduction box structure for a gear reducer according to claim 1, characterized in that: The bottom inner cavity of the outer casing (1) is provided with sliding grooves (12) on both sides, and the slider (3) is slidably connected to the inner cavity of the sliding groove (12).

3. The noise reduction box structure for a gear reducer according to claim 1, characterized in that: The bottom of the outer casing (1) is fixedly connected to an installation plate (13), and bolts (14) are threaded to the four corners of the installation plate (13).

4. The noise reduction box structure for a gear reducer according to claim 1, characterized in that: Two dampers (15) are fixedly connected to the inner cavity of the outer casing (1), and the other ends of the two dampers (15) are fixedly connected to the bottom of the inner casing (7).

5. The noise reduction box structure for a gear reducer according to claim 1, characterized in that: The outer wall of the outer casing (1) is fixedly connected with a number of strip-shaped noise reduction grooves (16). The strip-shaped noise reduction grooves (16) extend along the axial direction of the outer casing (1), and the spacing between adjacent strip-shaped noise reduction grooves (16) is set to 20-30mm.

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