Noise reduction box for gear reducer
By designing a combination structure with a trench in the noise reduction box of the gear reducer, and setting a sound insulation board and a second pad on the inside of the trench, the problem of poor breathability is solved and effective noise reduction and heat dissipation effect is achieved.
Patent Information
- Application Number
- CN202422422373.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The noise reduction box of existing gear reducers has poor breathability, resulting in poor heat dissipation effect.
A combination structure of the front box and the rear cover with a through groove is designed. A sound insulation panel is provided on the inner side of the through groove and a second pad is provided on the inner side of the sound insulation panel to increase the contact between the sound waves and the sound-absorbing structure, ensure a certain breathability and achieve noise reduction effect.
While ensuring breathability, it effectively reduces noise and improves heat dissipation effect.
Smart Images
Figure CN223152722U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of noise reduction boxes, and particularly relates to a noise reduction box for a gear speed reducer. Background Art
[0002] The gear speed reducer is an external meshing involute helical cylindrical gear speed reducer produced according to the national professional standard ZBJ19004. The gear speed reducer is widely used in East China for the slewing mechanism of tower-introduced tower cranes, and is widely used in metallurgy, mining, lifting, transportation, cement, construction, chemical industry, textile, printing and dyeing, pharmaceutical and other fields.
[0003] In the prior art, the noise of the speed reducer is relatively large during operation. In some scenarios, a noise reduction box is needed to reduce the noise. The common noise reduction box forms an enclosing structure for the speed reducer, with poor air permeability and it is difficult to ensure the heat dissipation effect. Content of the Utility Model
[0004] The utility model provides a noise reduction box for a gear speed reducer to solve the problems in the background art.
[0005] To achieve the above object, the utility model provides the following technical solution: A noise reduction box for a gear speed reducer, including a front box, a rear cover is arranged behind the front box. Both the front box and the rear cover include an outer shell. Through grooves are opened on the surface of the outer shell. Baffles are fixedly connected to the sides of the through grooves. A protective net is attached to the outside of the baffle. Sound insulation boards are stacked inside the baffle. A fixing frame is inserted into the inside of the through groove. A first cushion is pressed against the side of the fixing frame;
[0006] An installation groove is opened on the front of the front box. A motor shaft sheath is snap-connected inside the installation groove. Positioning plates are fixedly connected to both sides of the front box. A connection buckle is fixedly connected to the top of the front box. A motor base enclosure is fixedly connected to the lower end of the front box;
[0007] A connecting plate is fixedly connected to the front end of the rear cover. A positioning groove is opened on the side of the connecting plate. A chassis sleeve is fixedly connected to the rear end of the connecting plate.
[0008] Further, side ears are arranged on the side of the motor shaft sheath, and the side ears are connected to the inner wall of the installation groove through bolts.
[0009] Further, slots are opened at the front edge of the connecting plate. Plug plates are fixedly connected to the rear edge of the front box. The plug plates and the slots correspond to each other and are inserted and connected. The positioning plates and the positioning grooves correspond to each other and are inserted and connected.
[0010] Further, the protective net is arranged based on a metal frame. A metal net is fixedly connected to the inside of the metal frame. The corners of the metal frame are fixed to the outside of the baffle through bolts.
[0011] Further, the sound insulation boards are evenly provided with through holes at equal intervals. The number of the sound insulation boards is not unique, and the through holes on adjacent sound insulation boards are arranged staggeredly. A second cushion is adhered to the surface of the sound insulation board, and holes corresponding to the above through holes are provided on the second cushion.
[0012] Further, both the first cushion and the second cushion are provided based on sound-absorbing cotton. Convex points are provided on the opposite surface of the fixed frame and the first cushion, and inserting rods are fixedly connected to the inner side of the fixed frame, and the above inserting rods are inserted into the housing.
[0013] Further, the first cushion covers the inner walls of the front box and the rear cover. Notches are provided on both sides of the motor base enclosure, and the first cushion is also adhered to the inner walls of the above notches.
[0014] Compared with the prior art, the present utility model provides a noise reduction box for a gear reducer, and has the following beneficial effects:
[0015] The noise reduction box for the gear reducer is composed of a front box and a rear cover with through grooves, and at least one sound insulation board is arranged inside the through grooves, and a second cushion is arranged inside the sound insulation board. While ensuring a certain air permeability, the contact degree between sound waves and the sound absorption structure is increased, so as to achieve the noise reduction purpose while ensuring a certain air permeability. Description of the Drawings
[0016] Figure 1 is a structural schematic diagram of the present utility model;
[0017] Figure 2 is a side sectional view of the present utility model;
[0018] Figure 3 is a rear view of the front box of the present utility model;
[0019] Figure 4 is a front view of the rear cover of the present utility model;
[0020] Figure 5 is a schematic diagram of the through groove structure of the present utility model.
[0021] In the figure: 1. Front box; 101. Slot; 102. Insertion plate; 11. Installation groove; 12. Motor shaft sheath; 1201. Side ear; 13. Positioning plate; 14. Connection buckle; 15. Motor base enclosure; 2. Rear cover; 21. Connecting plate; 22. Positioning groove; 23. Chassis sleeve; 3. Housing; 4. Through groove; 5. Baffle; 6. Protective net; 7. Sound insulation board; 701. Second cushion; 8. Fixed frame; 9. First cushion. Detailed Embodiment
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0023] Please refer to Figures 1-5 , the present utility model discloses a noise reduction box for a gear reducer, including a front box 1, a rear cover 2 is arranged behind the front box 1, both the front box 1 and the rear cover 2 include a housing 3, a through groove 4 is opened on the surface of the housing 3, a baffle 5 is fixedly connected to the side of the through groove 4, a protective net 6 is attached to the outside of the baffle 5, a sound insulation board 7 is stacked inside the baffle 5, a fixing frame 8 is inserted into the inside of the through groove 4, and a first cushion 9 is pressed on the side of the fixing frame 8;
[0024] An installation groove 11 is opened on the front of the front box 1, a motor shaft sheath 12 is clamped inside the installation groove 11, positioning plates 13 are fixedly connected to both sides of the front box 1, a connection buckle 14 is fixedly connected to the top of the front box 1, and a motor seat enclosure 15 is fixedly connected to the lower end of the front box 1;
[0025] A connecting plate 21 is fixedly connected to the front end of the rear cover 2, a positioning groove 22 is opened on the side of the connecting plate 21, and a chassis sleeve 23 is fixedly connected to the rear end of the connecting plate 21.
[0026] Specifically, side ears 1201 are arranged on the side of the motor shaft sheath 12, and the side ears 1201 are connected to the inner wall of the installation groove 11 through bolts.
[0027] In this implementation scheme, the motor shaft sheath 12 is fixed in the installation groove 11 through the side ears 1201, which is convenient for disassembling and replacing the motor shaft sheath 12, and is convenient for replacement and adjustment according to the size of the output shaft of the reducer corresponding to the noise reduction box.
[0028] Specifically, a slot 101 is opened at the front edge of the connecting plate 21, an insertion plate 102 is fixedly connected to the rear edge of the front box 1, the insertion plate 102 corresponds to the slot 101 one by one and is inserted and connected, and the positioning plate 13 corresponds to the positioning groove 22 one by one and is inserted and connected.
[0029] In this implementation scheme, during the process of combining and connecting the front box 1 and the rear cover 2, the insertion plates 102 on the front box 1 are inserted into the slots 101 one by one, and the positioning plates 13 are inserted into the positioning grooves 22, which play an auxiliary fixing role in the combination and connection of the front box 1 and the rear cover 2, and are convenient for inserting bolts for fixing.
[0030] Specifically, the protection net 6 is arranged based on a metal frame. A metal net is fixedly connected to the inner side of the metal frame, and the corners of the metal frame are fixed to the outer side of the baffle 5 by bolts.
[0031] In this implementation scheme, the setting of the through groove 4 plays a role in connecting the inside and outside of the noise reduction box, facilitating the heat dissipation of the speed reducer. A protection net 6 is arranged in the through groove 4 to block external impurities.
[0032] Specifically, the sound insulation board 7 is evenly provided with through holes at equal intervals. The number of the sound insulation boards 7 is not unique, and the through holes on adjacent sound insulation boards 7 are staggered. A second cushion 701 is adhered to the surface of the sound insulation board 7, and holes corresponding to the through holes are provided on the second cushion 701; both the first cushion 9 and the second cushion 701 are arranged based on sound-absorbing cotton. Convex points are provided on the opposite surface of the fixed frame 8 and the first cushion 9, and insertion rods are fixedly connected to the inside of the fixed frame 8. The insertion rods are inserted into the housing 3.
[0033] In this implementation scheme, when the noise generated inside the noise reduction box diffuses outward, the sound waves are transmitted out through the through holes. By staggering the through holes on adjacent sound insulation boards 7, the sound wave transmission path is increased, thereby increasing the contact with the second cushion 701 and improving the noise absorption effect of the second cushion 701.
[0034] Specifically, the first cushion 9 covers the inner walls of the front box 1 and the rear cover 2. Notches are provided on both sides of the motor base enclosure 15, and the first cushion 9 is also adhered to the inner walls of the notches.
[0035] In this implementation scheme, the inner walls of the front box 1 and the rear cover 2 are covered with the first cushion 9, which plays an adsorption role in the noise generated by the operation of the speed reducer from the inside of the noise reduction box. The notches provided on both sides of the motor base enclosure 15 leave space for the feet of the motor base. The first cushion 9 at this notch fills the contact surface between the motor base enclosure 15 and the motor base.
[0036] During use, the front box 1 is nested outside the speed reducer from the side of the speed reducer with the motor shaft, and the motor shaft extends out from the installation groove 11. The motor shaft sheath 12 is nested outside the output shaft of the speed reducer and is snapped into the installation groove 11. Bolts are inserted for fixation. The rear cover 2 is snapped into the rear end of the speed reducer, and the insertion plate 102 is inserted into the slot 101, and the positioning plate 13 is inserted into the positioning groove 22 to play a role in combining and connecting the front box 1 and the rear cover 2. Bolts are inserted at the connection buckle 14 to fix the connection between the front box 1 and the rear cover 2.
[0037] In summary, the noise reduction box for the gear reducer is composed of a front box 1 with a through groove 4 and a rear cover 2, which form the structure of the noise reduction box. By arranging not less than one sound insulation board 7 inside the through groove 4 and arranging a second gasket 701 inside the sound insulation board 7, while ensuring a certain air permeability, the contact degree between sound waves and the sound absorption structure is increased, so as to achieve the purpose of noise reduction while ensuring a certain air permeability.
[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A noise reduction box for a gear reducer, comprising a front box (1), characterized in that: A rear cover (2) is provided at the rear of the front box (1). Both the front box (1) and the rear cover (2) include a housing (3). A through groove (4) is formed on the surface of the housing (3). A baffle (5) is fixedly connected to the side of the through groove (4). A protective net (6) is attached to the outside of the baffle (5). Sound insulation boards (7) are stacked inside the baffle (5). A fixing frame (8) is inserted into the inside of the through groove (4). A first cushion (9) is pressed against the side of the fixing frame (8). An installation groove (11) is formed on the front of the front box (1). A motor shaft sheath (12) is snap-fitted inside the installation groove (11). Positioning plates (13) are fixedly connected to both sides of the front box (1). A connection buckle (14) is fixedly connected to the top of the front box (1). A motor base enclosure (15) is fixedly connected to the lower end of the front box (1). A connecting plate (21) is fixedly connected to the front end of the rear cover (2). A positioning groove (22) is formed on the side of the connecting plate (21). A chassis sleeve (23) is fixedly connected to the rear end of the connecting plate (21).
2. The noise reduction box for a gear speed reducer according to claim 1, characterized in that: Side ears (1201) are provided on the side of the motor shaft sheath (12). The side ears (1201) are connected to the inner wall of the installation groove (11) by bolts.
3. The noise reduction box for a gear reducer according to claim 1, characterized in that: Slots (101) are formed on the front edge of the connecting plate (21). Plug plates (102) are fixedly connected to the rear edge of the front box (1). The plug plates (102) correspond to the slots (101) one by one and are inserted and connected. The positioning plates (13) correspond to the positioning grooves (22) one by one and are inserted and connected.
4. The noise reduction box for a gear speed reducer according to claim 1, characterized in that: The protective net (6) is based on a metal frame. A metal mesh is fixedly connected to the inside of the metal frame. The corners of the metal frame are fixed to the outside of the baffle (5) by bolts.
5. The noise reduction box for a gear speed reducer according to claim 1, wherein: The sound insulation boards (7) are evenly provided with through holes at equal intervals. The number of the sound insulation boards (7) is not unique. The through holes on adjacent sound insulation boards (7) are staggered. A second cushion (701) is adhered to the surface of the sound insulation board (7). Holes corresponding to the through holes are formed on the second cushion (701).
6. The noise reduction box for a gear speed reducer according to claim 1, characterized in that: Both the first cushion (9) and the second cushion (701) are based on sound-absorbing cotton. Convex points are provided on the opposite surface of the fixing frame (8) and the first cushion (9). Plug rods are fixedly connected to the inside of the fixing frame (8). The plug rods are inserted into the housing (3).
7. The noise reduction box for a gear reducer according to claim 1, wherein: The first cushion (9) covers the inner walls of the front box (1) and the rear cover (2). Notches are formed on both sides of the motor base enclosure (15). The first cushion (9) is also adhered to the inner walls of the notches.