Low-noise bush structure

Abstract

The utility model relates to the technical field of bush, provide low noise type bush structure, including bush body, the middle part of bush body is equipped with middle groove, the outside annular array of bush body is equipped with mounting groove in middle groove, the both sides of mounting groove inside are equipped with a plurality of clamping slots, the inside of bush body is provided with the noise reduction subassembly in mounting groove, the noise reduction subassembly includes the noise reduction block, the noise reduction block sliding connection is in the inside of mounting groove, the inside of noise reduction block is equipped with the sound attenuation groove, in the utility model, through second sound absorption board and invalid replacement, only need to use the tool to insert the rotation groove, rotate the tool and drive the rotating rod to rotate, the rotating rod drives the clamping plate to rotate, the clamping plate rotates from the clamping slot and enters the storage groove and is stored, the noise reduction block loses the fixation at this moment, the staff extracts the noise reduction block from the mounting groove, at this moment, the staff can replace the noise reduction block, therefore, do not need to replace integrally, reduce the waste of resources and reduce the cost.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, and in particular to a low-noise bushing structure. Background Technology

[0002] Bushings are key components widely used in mechanical equipment. They are typically installed between moving parts and fixed structures as tubular or sleeve-shaped intermediate media. Their core function is to reduce direct friction and wear between the two through the elastic deformation or lubrication properties of their own materials. At the same time, they absorb vibration, reduce noise, and compensate for dimensional deviations caused by processing errors or thermal expansion and contraction, thereby improving the smoothness, durability, and reliability of equipment operation. They are commonly found in automotive suspension systems, industrial bearings, aerospace equipment, and other fields.

[0003] As disclosed in CN216478460U, this utility model discloses a bushing with noise reduction function, including a bushing body. The bushing body is composed of an outer sleeve and an inner sleeve, and the inner sleeve is disposed in the inner cavity of the outer sleeve. The inner sleeve and the outer sleeve are connected by multiple connecting plates arranged in a circumferential array, and a sound-absorbing cavity is provided between each pair of adjacent connecting plates. Sound-absorbing holes are provided at both the upper and lower ends of the sound-absorbing cavity. The inner wall of the inner sleeve is provided with multiple vertical grooves arranged in a circumferential array. Through the cooperation between the annular grooves, vertical grooves and oil injection holes, it is beneficial to uniformly supply oil to the inner wall of the inner sleeve and the parts in contact with it. With the setting of wool felt, it is only necessary to soak the wool felt in oil each time. The wool felt can continuously supply oil to the inner wall of the inner sleeve and the parts in contact with it, preventing the bushing from dry friction, avoiding damage to the bushing, saving maintenance costs, and reducing the workload of frequent manual oiling, thus reducing labor costs.

[0004] In existing technology, multiple silencing cavities are set on the outside of the bushing. During operation, the sound enters the silencing cavity through the sound-absorbing holes. The sound waves are absorbed and reflected by several sound-absorbing panels, and noise reduction is achieved through the cooperation of several sound-absorbing panels. Some sound waves are further absorbed through the honeycomb cavity and sound-absorbing cotton in the middle. However, the lubricating oil flows through the annular groove and eventually enters the silencing cavity through the gap at the bushing port, where it is absorbed by the sound-absorbing cotton. This eventually fills the silencing cavity with lubricating oil, which reduces the noise reduction effect. When the silencing structure fails, the entire bushing needs to be replaced, which results in resource waste and increased maintenance costs. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where lubricating oil flows through the annular groove and eventually enters the silencing cavity through the gap at the bushing port, where it is absorbed by the sound-absorbing cotton, ultimately filling the silencing cavity with lubricating oil and reducing the noise reduction effect. When the silencing structure fails, the entire bushing needs to be replaced, which leads to resource waste and increased maintenance costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-noise bushing structure, comprising a bushing body, a central groove in the middle of the bushing body, mounting grooves arranged in a ring array on the outer side of the central groove, a plurality of slots on both sides inside the mounting groove, a noise reduction component disposed inside the bushing body in the mounting groove, the noise reduction component comprising a noise reduction block, the noise reduction block being slidably connected inside the mounting groove, a sound-absorbing groove being disposed inside the noise reduction block, and sound inlet holes being disposed at the top and bottom center of the noise reduction block, the sound inlet holes communicating with the sound-absorbing groove.

[0007] In a preferred embodiment, rotating rods are rotatably connected to both sides of the noise reduction block, and friction exists between the rotating rods and the noise reduction block. Several locking plates are fixedly connected to the middle of the rotating rods, and the locking plates engage with locking slots. A rotating groove is opened at the top of the rotating rods, and a storage slot is opened at the location of the noise reduction block on the locking plate. The storage slot is slidably connected to the locking plate.

[0008] In a preferred embodiment, a side plate is provided on the side of the noise reduction block away from the central groove. The side plate is slidably connected to the mounting groove. Bolts are threadedly connected to both sides of the side plate at equal intervals. The bolts penetrate the side plate and are threadedly connected to the noise reduction block.

[0009] In a preferred embodiment, sound-absorbing cotton is fixedly connected to the middle of the sound-absorbing groove, and several first sound-absorbing plates are fixedly connected to the top and bottom of the sound-absorbing cotton inside the sound-absorbing groove. A baffle is provided in the middle of the first sound-absorbing plate, and the baffle is inclinedly fixed to the inner wall of the sound-absorbing groove.

[0010] In a preferred embodiment, the baffle is fixedly connected to the noise reduction block, and a second sound-absorbing plate is fixedly connected to the top and bottom of the baffle.

[0011] In a preferred embodiment, an oil inlet groove is provided on one side of the middle part of the bushing body, and wool felt is provided inside the oil inlet groove. An annular groove is provided in the middle part of the bushing body inside the central groove, and the annular groove communicates with the oil inlet groove. A flow groove is provided in an annular array on the inner wall of the bushing body in the central groove, and the flow groove communicates with the annular groove.

[0012] The beneficial effects of this utility model are as follows:

[0013] In this invention, when replacing the second sound-absorbing panel after it fails, simply insert a tool into the slot, rotate the tool to drive the rotating rod to rotate, and the rotating rod will drive the card plate to rotate. The card plate will rotate out of the slot and into the storage slot for storage. At this time, the noise reduction block is no longer fixed, and the staff can pull the noise reduction block out of the installation slot. The staff can then replace the noise reduction block. Therefore, there is no need to replace the whole thing, which reduces the waste of resources and lowers costs.

[0014] Workers can maintain the removed noise reduction blocks by loosening the bolts with tools, thus separating the noise reduction blocks from the side plates. At this point, the side plates are removed from the noise reduction blocks, exposing the noise reduction components inside. Workers can then perform maintenance on the internal components of the noise reduction blocks, facilitating their reuse and further achieving recycling and minimizing resource waste. Attached Figure Description

[0015] Figure 1 A schematic diagram of the low-noise bushing structure provided by this utility model;

[0016] Figure 2 A cross-sectional structural diagram of the low-noise bushing structure provided by this utility model;

[0017] Figure 3 A schematic cross-sectional view of the main body of the low-noise bushing structure provided by this utility model;

[0018] Figure 4 An exploded structural diagram of the noise reduction component with a low-noise bushing structure provided by this utility model;

[0019] Figure 5 A schematic diagram of the rotating rod structure for the low-noise bushing structure provided by this utility model;

[0020] Figure 6 A schematic diagram of the internal structure of the noise reduction block for the low-noise bushing structure provided by this utility model;

[0021] Figure 7 A schematic diagram of the baffle structure for the low-noise bushing structure provided by this utility model.

[0022] Legend:

[0023] 1. Bushing body; 11. Middle groove; 12. Flow groove; 13. Oil inlet groove; 14. Wool felt; 15. Mounting groove; 16. Slot; 17. Annular groove; 21. Noise reduction block; 22. Sound inlet hole; 23. Silencing groove; 24. Storage groove; 25. Side plate; 26. Bolt; 27. Rotating rod; 271. Rotating groove; 272. Slot plate; 28. First sound-absorbing plate; 29. ​​Baffle; 291. Second sound-absorbing plate; 210. Sound-absorbing cotton. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a low-noise bushing structure, including a bushing body 1, a central groove 11 in the middle of the bushing body 1, and mounting grooves 15 arranged in a ring array on the outer side of the central groove 11. Several slots 16 are provided on both sides inside the mounting grooves 15. A noise reduction component is disposed inside the mounting grooves 15 in the bushing body 1. The noise reduction component includes a noise reduction block 21, which is slidably connected inside the mounting grooves 15. The noise reduction block 21 has a noise reduction function inside. The noise reduction block 21 has a sound inlet 22 at the top and bottom of the sound groove 23 and a sound inlet 22 communicating with the sound silencing groove 23. The noise reduction block 21 is rotatably connected to both sides of the noise reduction block 21. The rotating rod 27 has friction with the noise reduction block 21. Several locking plates 272 are fixedly connected to the middle of the rotating rod 27. The locking plates 272 are engaged with the locking groove 16. The top of the rotating rod 27 has a rotating groove 271. The noise reduction block 21 has a storage groove 24 at the locking plate 272. The storage groove 24 is slidably connected to the locking plate 272.

[0026] In this embodiment, when replacing the second sound-absorbing panel 291 due to failure, simply insert a tool into the rotating slot 271, rotate the tool to drive the rotating rod 27 to rotate, and the rotating rod 27 drives the card plate 272 to rotate. The card plate 272 rotates out of the card slot 16 and enters the storage slot 24 for storage. At this time, the noise reduction block 21 is no longer fixed, and the staff can pull the noise reduction block 21 out of the mounting slot 15. At this time, the staff can replace the noise reduction block 21. Therefore, there is no need to replace the whole thing, which reduces costs and reduces waste of resources.

[0027] like Figure 4 , Figure 6 as well as Figure 7As shown, a side plate 25 is provided on the side of the noise reduction block 21 away from the central groove 11. The side plate 25 is slidably connected to the mounting groove 15. Bolts 26 are threadedly connected to both sides of the side plate 25 at equal intervals. The bolts 26 penetrate the side plate 25 and are threadedly connected to the noise reduction block 21. Sound-absorbing cotton 210 is fixedly connected to the middle of the sound-absorbing groove 23. Several first sound-absorbing plates 28 are fixedly connected to the top and bottom of the sound-absorbing cotton 210 inside the sound-absorbing groove 23. A baffle 29 is provided in the middle of the first sound-absorbing plate 28. The baffle 29 is fixedly fixed to the inner wall of the silencing groove 23. The baffle 29 is fixedly connected to the noise reduction block 21. The top and bottom of the baffle 29 are fixedly connected to the second sound-absorbing plate 291. An oil inlet groove 13 is opened on one side of the middle part of the bushing body 1. A wool felt 14 is provided inside the oil inlet groove 13. An annular groove 17 is opened in the middle part of the bushing body 1 inside the middle groove 11. The annular groove 17 communicates with the oil inlet groove 13. A flow groove 12 is arranged in an annular array on the inner wall of the bushing body 1 inside the middle groove 11. The flow groove 12 communicates with the annular groove 17.

[0028] In this embodiment, lubricating oil is added to the oil inlet 13, and the wool felt 14 absorbs the lubricating oil. The lubricating oil flows into the annular groove 17 through the wool felt 14, and then flows along the flow groove 12 to lubricate the middle groove 11. The sound generated during use enters the silencing groove 23 through the sound inlet 22. The second sound-absorbing plate 291 absorbs part of the sound waves. Due to the inclined setting of the baffle 29 and the rebound of the sound waves, the sound waves are gradually reduced after being absorbed by several second sound-absorbing plates 291. Some sound waves are absorbed by the sound-absorbing cotton 210. The staff can maintain the removed noise reduction block 21 by loosening the bolt 26 with a tool. The bolt 26 separates the noise reduction block 21 from the side plate 25. At this time, the side plate 25 is removed from the noise reduction block 21, and the noise reduction parts inside the noise reduction block 21 are exposed. The staff can maintain the inside of the noise reduction block 21 to facilitate secondary use, thus further realizing recycling and further reducing resource waste.

[0029] Working principle: First, lubricating oil is added to the oil inlet 13. The wool felt 14 absorbs the lubricating oil, which then flows into the annular groove 17 through the wool felt 14 and then along the flow groove 12, thereby lubricating the middle groove 11. During use, the sound generated enters the silencing groove 23 through the sound inlet 22. The second sound-absorbing plate 291 absorbs part of the sound waves. Due to the inclined setting of the baffle 29 and the rebound of the sound waves, the sound waves are gradually reduced in noise after being absorbed by several second sound-absorbing plates 291. Some sound waves are absorbed by the sound-absorbing cotton 210. During long-term use, lubricating oil enters the interior of the noise-reducing block 21 through the gap at the port of the noise-reducing block 21, and the silencing structure gradually fails. Therefore, when replacing it, simply insert a tool into the rotating groove 271 and rotate the tool to drive the rotating... When rod 27 rotates, it drives the card plate 272 to rotate. The card plate 272 rotates out of the card slot 16 and enters the storage slot 24 for storage. At this time, the noise reduction block 21 is no longer fixed. The staff can pull the noise reduction block 21 out of the installation slot 15. The staff can then replace the noise reduction block 21 without replacing the whole block, reducing resource waste and lowering costs. The staff can maintain the removed noise reduction block 21 by loosening the bolt 26 with a tool. The bolt 26 separates the noise reduction block 21 from the side plate 25. At this time, the side plate 25 is removed from the noise reduction block 21, exposing the noise reduction components inside the noise reduction block 21. The staff can then perform maintenance on the inside of the noise reduction block 21 to facilitate secondary use, thus further realizing recycling and reducing resource waste.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A low-noise bushing structure, comprising a bushing body (1), characterized in that: The bushing body (1) has a central groove (11) in the middle. The bushing body (1) has an installation groove (15) arranged in a ring array on the outer side of the central groove (11). Several slots (16) are provided on both sides inside the installation groove (15). A noise reduction component is provided inside the bushing body (1) in the installation groove (15). The noise reduction component includes a noise reduction block (21). The noise reduction block (21) is slidably connected inside the installation groove (15). A sound-absorbing groove (23) is provided inside the noise reduction block (21). A sound inlet hole (22) is provided at the top and bottom center of the noise reduction block (21). The sound inlet hole (22) communicates with the sound-absorbing groove (23).

2. The low-noise bushing structure according to claim 1, characterized in that: The noise reduction block (21) is rotatably connected to two sides by rotating rods (27). There is friction between the rotating rods (27) and the noise reduction block (21). Several clamping plates (272) are fixedly connected to the middle of the rotating rods (27). The clamping plates (272) are engaged with the clamping slots (16). A rotating groove (271) is opened at the top of the rotating rods (27). A storage groove (24) is opened at the clamping plate (272) of the noise reduction block (21). The storage groove (24) is slidably connected to the clamping plate (272).

3. The low-noise bushing structure according to claim 2, characterized in that: The noise reduction block (21) is provided with a side plate (25) on the side away from the central groove (11). The side plate (25) is slidably connected to the mounting groove (15). Bolts (26) are threadedly connected to both sides of the side plate (25) at equal intervals. The bolts (26) penetrate the side plate (25) and are threadedly connected to the noise reduction block (21).

4. The low-noise bushing structure according to claim 3, characterized in that: The sound-absorbing cotton (210) is fixedly connected to the middle of the sound-absorbing groove (23). Several first sound-absorbing plates (28) are fixedly connected to the top and bottom of the sound-absorbing cotton (210) inside the sound-absorbing groove (23). A baffle (29) is provided in the middle of the first sound-absorbing plate (28). The baffle (29) is fixedly inclined to the inner wall of the sound-absorbing groove (23).

5. The low-noise bushing structure according to claim 4, characterized in that: The baffle (29) is fixedly connected to the noise reduction block (21), and the top and bottom of the baffle (29) are fixedly connected to the second sound-absorbing plate (291).

6. The low-noise bushing structure according to claim 1, characterized in that: An oil inlet groove (13) is provided on one side of the middle part of the bushing body (1). Wool felt (14) is provided inside the oil inlet groove (13). An annular groove (17) is provided in the middle part of the bushing body (1) inside the middle groove (11). The annular groove (17) communicates with the oil inlet groove (13). A flow groove (12) is provided in an annular array on the inner wall of the bushing body (1) in the middle groove (11). The flow groove (12) communicates with the annular groove (17).

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