Fully-coated noise reduction and sound insulation pad for engine

Abstract

The utility model discloses a full-coating noise reduction and sound insulation pad for an engine, and relates to the technical field of noise reduction and sound insulation, the full-coating noise reduction and sound insulation pad comprises a side pad and a bottom pad, one end of the side pad is fixedly connected with a lock rod, the end part of the lock rod is fixedly connected with lock heads at equal intervals, and the other end of the side pad is provided with clamping grooves at equal intervals; according to the side pad, through the detachable buckling design of the lock head and the clamping grooves in different positions, the assembling radius can be flexibly adjusted according to the size of the outer wall of an engine, and tight wrapping is achieved; an elastic and tough ring is arranged in the bottom pad, a conical supporting structure of the elastic and tough ring can be tightly attached to the bottom contours of engines of different specifications through self-adaptive changes of the height difference of the inner periphery and the outer periphery when stressed, the elastic and tough ring and the conical supporting structure are matched to form a full-wrapping noise reduction structure from the side wall to the bottom, and it is guaranteed that acoustic materials make full contact with the surfaces of the engines to improve the noise reduction efficiency; and the adaptability to different types of engines is enhanced through an adjustable structure, full covering of the noise reduction range is achieved, and the noise reduction effect on the engine is further improved.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction and sound insulation technology, and in particular to a noise reduction and sound insulation pad for a fully enclosed engine. Background Technology

[0002] Sound insulation pads are materials used to block the propagation of sound, primarily reducing noise by absorbing, reflecting, or damping sound waves. They are typically made of elastic and porous materials such as rubber, foam, and fibers, and can be designed in different thicknesses and shapes to meet various needs. For example, they are used in home renovations to soundproof floors and reduce noise interference from downstairs neighbors; in industrial equipment, they are used to encase machinery and reduce operating noise; and in recording studios, they are used to line walls and improve the acoustic environment. They are easy to install and provide significant sound insulation, effectively improving the quietness of a space, and are widely used in construction, industry, and entertainment.

[0003] The noise generated during engine operation has always been a pressing issue. Currently, to effectively reduce noise, sound-absorbing pads are typically added to the bottom of the engine. This method primarily aims to reduce noise generated by vibration between the engine and the ground. However, existing sound-absorbing pads have significant limitations because they only address noise from the bottom of the engine, neglecting the noise generated by the self-vibration of the engine's side walls. Consequently, this noise is not effectively eliminated. Logically, engine vibrations not only travel to the bottom contact point with the ground, but the side walls also generate noise due to their own vibrations. Existing sound-absorbing pads only address noise from the bottom, clearly failing to comprehensively solve the noise problem during engine operation. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a noise reduction and sound insulation pad for a fully enclosed engine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a noise reduction and sound insulation pad for a fully enclosed engine, comprising a side pad and a bottom pad. One end of the side pad is fixedly connected to a locking rod, and the end of the locking rod is fixedly connected to a lock head at equal intervals. The other end of the side pad is provided with slots at equal intervals, and the inner end of the slot is provided with an opening. The width of the opening is greater than the width of the lock head, and the width of the lock head is greater than the width of the slot. The two ends of the side pad are wrapped around to form a cylinder, and the two ends are fixed by the engagement of the lock head and the slot, covering the side wall of the engine. The bottom pad is connected to the bottom end of the side pad to cover the bottom wall of the engine.

[0006] Preferably, a baffle is fixedly connected to the bottom edge of the side pad, and the thickness of the baffle is greater than the thickness of the side pad.

[0007] Preferably, the outer periphery of the base pad is provided with a cloth pocket, and the base pad is fixedly connected to an elastic ring through the cloth pocket.

[0008] Preferably, the elastic ring is formed by a plate structure that wraps around both ends to form a ring structure, and the difference in radius between the inner and outer perimeters of the ring is less than the width of the elastic ring.

[0009] Preferably, both ends of the elastic ring are provided with positioning holes, and the two ends of the elastic ring are fixed by screws after being wrapped around them.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, the side pads are designed with detachable fastening heads and slots at different positions, allowing for flexible adjustment of the assembly radius according to the engine's outer wall dimensions to achieve tight coverage. The bottom pads have built-in elastic rings, and their conical support structure can adapt to changes in height difference between the inner and outer perimeters when under stress, tightly fitting the bottom contour of engines of different specifications. Together, they form a fully enclosed noise reduction structure from the side wall to the bottom, ensuring sufficient contact between the acoustic materials and the engine surface to improve noise reduction efficiency. The adjustable structure also enhances adaptability to different engine models, achieving full coverage of the noise reduction range and further increasing the noise reduction effect on the engine.

[0012] 2. In this utility model, the bottom pad adopts a composite structure of "sound-absorbing layer-sound-insulating layer-damping layer-supporting layer", which can effectively absorb mid-to-high frequency noise, block the propagation of sound waves and reduce vibration noise. The side pad only uses polyester fiber sound-absorbing cotton as the sound-absorbing layer to achieve sound insulation effect while ensuring its plasticity, so as to facilitate engine disassembly and assembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the assembly structure of a fully enclosed noise reduction and sound insulation pad for an engine proposed in this utility model;

[0014] Figure 2 This utility model presents a schematic diagram of the disassembled structure of a fully enclosed noise reduction and sound insulation pad for engines. Figure 1 ;

[0015] Figure 3 This utility model presents a schematic diagram of the disassembled structure of a fully enclosed noise reduction and sound insulation pad for engines. Figure 1 ;

[0016] Figure 4 This is a cross-sectional view of the structure of the bottom pad of the engine full-coverage noise reduction and sound insulation pad proposed in this utility model.

[0017] Illustrations: 1. Side pad; 10. Slot; 11. Lock head; 12. Groove; 13. Stop bar; 14. Locking bar; 2. Bottom pad; 21. Elastic ring; 22. Cloth pocket. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1: As Figure 1-4 As shown, this utility model provides a noise reduction and sound insulation pad for a fully enclosed engine, including a side pad 1 and a bottom pad 2. One end of the side pad 1 is fixedly connected to a locking rod 14, and the end of the locking rod 14 is fixedly connected to a locking head 11 at equal intervals. The other end of the side pad 1 is provided with slots 10 at equal intervals. The inner end of the slot 10 is provided with a groove 12. The width of the groove 12 is greater than the width of the locking head 11, and the width of the locking head 11 is greater than the width of the slot 10. The two ends of the side pad 1 are wrapped to form a cylinder, and the two ends are fixed by the locking head 11 and the slot 10. The pad covers the side wall of the engine. The bottom pad 2 is connected to the bottom end of the side pad 1 to cover the bottom wall of the engine.

[0021] The specific settings and functions of this embodiment are described below. The sound-absorbing layer material is made of polyester fiber sound-absorbing cotton, which has a large number of tiny pores inside. This allows sound waves to be continuously reflected and rubbed within the pores, converting sound energy into heat energy and dissipating it. The sound absorption effect is significant, and it has a strong ability to absorb mid-to-high frequency noise. The sound insulation layer material is made of polyvinyl chloride foam board: the closed-cell structure accounts for more than 90%, making it difficult for sound waves to penetrate. The damping layer material is made of butyl rubber damping sheet, which has good damping characteristics. When sound waves reach the damping layer, they can cause the material to vibrate, converting sound energy into mechanical energy loss, thereby reducing noise propagation. A multi-layer composite structure of "sound-absorbing layer-sound insulation layer-damping layer-supporting layer" is adopted. The sound-absorbing layer is located on the outermost layer, absorbing some noise first; the sound insulation layer is in the middle, blocking the propagation of sound; the damping layer reduces the noise generated by vibration; and the supporting layer provides support, ensuring the shape and strength of the mat.

[0022] During use, since the side pad 1 covers the outer wall of the engine, it needs to have a certain fixed noise reduction effect, and at the same time, it also needs to have a certain shaping ability. Therefore, the "sound insulation layer-damping layer-support layer" in the "sound absorption layer-sound insulation layer-damping layer-support layer" structure is removed to maintain a good shaping ability. The positions of different slots 10 on the side pad 1 are staggered. According to the size of the engine, the corresponding lock head 11 is inserted into the slot 10, so that the baffle 13 slides to the outer end of the slot 10 and is fixed. Since the slots 10 are set in different positions, different mounting radii can be obtained by changing different slots 10 and lock heads 11 to meet the engine's covering and sound insulation requirements.

[0023] Example 2: Figure 2 and Figure 4 As shown, a retaining strip 13 is fixedly connected to the bottom edge of the side pad 1, and the thickness of the retaining strip 13 is greater than the thickness of the side pad 1. A cloth pocket 22 is provided around the outer periphery of the bottom pad 2, and an elastic ring 21 is fixedly connected to the bottom pad 2 through the cloth pocket 22. The elastic ring 21 is formed by a plate structure that wraps around both ends to form a ring structure, and the difference in radius between the inner and outer peripheries of the ring is less than the width of the elastic ring 21. Positioning holes are provided at both ends of the elastic ring 21, and the two ends of the elastic ring 21 are fixed by screws after being wrapped around.

[0024] The overall effect of this embodiment is that, in order to adapt to different engine assembly requirements, the radius of the side pad 1 assembled into a ring is slightly larger than the radius of the engine. The bottom pad 2 includes a "sound-absorbing layer-sound-insulating layer-damping layer-support layer" structure. The bottom pad 2 is installed below the side pad 1. At the same time, a flexible ring 21 is set at the bottom end of the bottom pad 2. The flexible ring 21 has a conical structure, with its outer peripheral structure convex upward and its inner peripheral structure pushing downward. When the engine is placed, the bottom support structure provides support to the inner peripheral of the flexible ring 21.

[0025] When the height difference between the inner and outer peripheries of the elastic ring 21 decreases, the conical fixing structure increases the outward support force of the outer periphery of the elastic ring 21, thereby supporting the entire outer periphery of the bottom pad 2 and fastening it to the bottom end of the side pad 1. This allows the outer periphery of the bottom pad 2 to be embedded in the baffle 13. The elastic ring 21 can also provide support to the side pad 1. When disassembly is required, the engine and sound insulation pad are moved away from the supporting structure, the screws are removed from the elastic ring 21, the elastic ring 21 is then removed from the cloth bag 22, the bottom pad 2 is separated from the bottom surface of the side pad 1, and the side pad 1 is removed from the engine side wall. Then, the locking head 11 is pushed into the slot 12, allowing the locking head 11 to be removed from the slot 12, thus achieving the separation of the sound insulation pad from the engine.

[0026] The usage and working principle of this device are as follows: The side pad 1 is fastened to the slot 10 by the lock head 11 on the locking rod 14, forming a cylinder around the side wall of the engine. The "sound-absorbing layer-sound-insulating layer-damping layer-supporting layer" structure is removed to retain the shaping ability. The assembly radius can be adjusted by the slot 10 and the lock head 11 at different staggered positions. The bottom pad 2 is connected to the bottom end of the side pad 1 by the elastic ring 21 in the cloth pocket 22. When the inner periphery of the elastic ring 21 is supported by the engine, the height difference decreases and the outer periphery protrudes outward by using the conical structure, supporting the outer periphery of the bottom pad 2 and embedding it in the baffle 13 at the bottom end of the side pad 1, thus covering the bottom wall of the engine. Among them, the sound-absorbing layer of the side pad 1 uses polyester fiber sound-absorbing cotton to absorb mid-to-high frequency noise, the sound insulation layer uses polyvinyl chloride foam board to block sound waves, the damping layer is butyl rubber damping sheet to reduce vibration noise, and the support layer ensures shape strength; the bottom pad 2 adopts a multi-layer composite structure, and the elastic ring 21 and the baffle 13 are used to achieve detachable fixing, so as to achieve the effect of noise reduction and sound insulation of the engine and adapt to different sizes.

[0027] 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 noise reduction and sound insulation pad for a fully enclosed engine, comprising side pads (1) and a bottom pad (2), characterized in that: One end of the side pad (1) is fixedly connected to a locking rod (14), and the end of the locking rod (14) is fixedly connected to a lock head (11) at equal intervals. The other end of the side pad (1) is provided with slots (10) at equal intervals. The inner end of the slot (10) is provided with a groove (12). The width of the groove (12) is greater than the width of the lock head (11). The width of the lock head (11) is greater than the width of the slot (10). The two ends of the side pad (1) are formed into a cylinder by wrapping around it, and the two ends are fixed by the locking head (11) and the slot (10) being fastened together. It covers the side wall of the engine. The bottom pad (2) is connected to the bottom end of the side pad (1) to cover the bottom wall of the engine.

2. The engine full-coverage noise reduction and sound insulation pad according to claim 1, characterized in that: A baffle (13) is fixedly connected to the bottom edge of the side pad (1), and the thickness of the baffle (13) is greater than the thickness of the side pad (1).

3. The engine full-coverage noise reduction and sound insulation pad according to claim 1, characterized in that: The outer periphery of the bottom pad (2) is provided with a cloth pocket (22), and the bottom pad (2) is fixedly connected to an elastic ring (21) through the cloth pocket (22).

4. The engine full-coverage noise reduction and sound insulation pad according to claim 1, characterized in that: The elastic ring (21) is formed by the plate structure passing around both ends to form a ring structure, and the difference in radius between the inner and outer perimeters is less than the width of the elastic ring (21).

5. The engine full-coverage noise reduction and sound insulation pad according to claim 4, characterized in that: The elastic ring (21) has positioning holes at both ends, and the elastic ring (21) is fixed by screws after being wrapped around both ends.

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