Internal combustion engine mounting structure with sound insulation function

Abstract

The invention relates to the technical field of internal combustion engines, and discloses an internal combustion engine mounting structure with a sound insulation function, which comprises an internal combustion engine body, and one side wall of the internal combustion engine body is detachably connected with first foamed plastic; the second foamed plastic is detachably mounted on the other side wall of the internal combustion engine body, and the end part of the second foamed plastic is matched with the end part of the first foamed plastic to form a sound insulation groove for the internal combustion engine body; the at least two reflecting aluminum foils are symmetrically arranged on the inner wall of the sound insulation groove; by arranging the sound insulation groove, the reflection aluminum foil, the reflection groove, the diffusion column and the convex plate, the device is simple in structure and convenient to disassemble and maintain, the emitted noise can be well counteracted through the reflected noise, the noise is reduced, the vibration propagation of the noise can be reduced, the noise can be absorbed and blocked, and the service life of the device is prolonged. The sound insulation treatment effect on high-frequency noise and low-frequency noise is improved in a composite mode.

Description

Technical Field

[0001] The invention relates to the technical field of internal combustion engines, and in particular to an internal combustion engine mounting structure with a sound insulation function. Background Art

[0002] An internal combustion engine is an engine that generates power by mixing fuel and air inside the cylinder and igniting it. Its working principle is based on the principle of thermodynamics. The high-temperature and high-pressure gas generated by combustion drives the piston to move, which is converted into mechanical energy. When the internal combustion engine is working, it transmits vibration and noise to the outside.

[0003] Existing internal combustion engines are usually not designed with sound insulation on the outside, but in order to be used in a quiet environment and reduce noise pollution to the surrounding area, some internal combustion engines are designed with simple foam cotton, sound insulation rubber or resin sound insulation covers on the outside for noise reduction and sound insulation. However, this type of sound insulation has a relatively simple material and sound insulation method, resulting in limited sound insulation effect and failure to effectively weaken the transmission of noise to the outside. For this reason, we propose an internal combustion engine installation structure with sound insulation function. Summary of the invention

[0004] The purpose of the present invention is to provide an internal combustion engine mounting structure with a sound insulation function, so as to solve the problem that the sound insulation materials and sound insulation methods of the existing internal combustion engine external sound insulation mentioned in the above background technology are relatively simple and the sound insulation effect is poor.

[0005] To achieve the above object, the present invention provides the following technical solution: an internal combustion engine mounting structure with sound insulation function, comprising:

[0006] An internal combustion engine body, wherein a first foamed plastic is detachably connected to one side wall of the internal combustion engine body;

[0007] A second foamed plastic is detachably mounted on the other side wall of the internal combustion engine body, and an end of the second foamed plastic cooperates with an end of the first foamed plastic to form a sound insulation groove for the internal combustion engine body;

[0008] At least two reflective aluminum foils are symmetrically arranged on the inner wall of the sound insulation groove, and one side wall of the reflective aluminum foil includes a reflective groove and a diffusion column, the reflective groove is opened on one side wall of the reflective aluminum foil to extend along its height direction, and the diffusion column is staggered with the reflective groove;

[0009] The convex plate protrudes from the outer surface of the internal combustion engine body and extends into the inner side of the sound insulation groove to form heat dissipation and noise blocking.

[0010] Preferably, a combustion chamber is provided on the internal combustion engine body, a piston is slidably connected to the inside of the combustion chamber, a crankshaft is rotatably mounted on the lower end of the inner side of the internal combustion engine body, and the crankshaft and the piston are matched through a connecting rod.

[0011] Preferably, a connection block is fixed at one end of the second foam plastic, and a connection groove matching with the connection block is formed at one end of the first foam plastic.

[0012] Preferably, the cross section of the connecting block is T-shaped.

[0013] Preferably, a card slot is provided at the inner lower end of the first foamed plastic, and a card block cooperating with the card slot is provided on the lower surface of the internal combustion engine body.

[0014] Preferably, a labyrinth cavity is formed on one end surface of the first foamed plastic, and the labyrinth cavity is connected to the interior of the reflective groove.

[0015] Preferably, natural rubber is fixed to one side of the first foamed plastic, one end of the natural rubber is connected to a sound insulation board, and a cavity is provided between the sound insulation board and the first foamed plastic, and the reflective aluminum foil is fixed to the sound insulation board.

[0016] Preferably, the natural rubber is in an "X" shape, and the thickness of the natural rubber is 0.5-1.5 mm.

[0017] Preferably, cellulose is coated between the sound insulation board and the reflective aluminum foil.

[0018] Preferably, the first foamed plastic and the second foamed plastic are equal in shape and size.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By providing sound insulation grooves, reflective aluminum foil, reflective grooves, diffusion columns and convex plates, the noise of the internal combustion engine body can be reduced from being transmitted to the outside, the quietness of the internal combustion engine body during operation can be improved, and excessive noise emitted by the internal combustion engine body can be avoided to cause noise pollution to the surrounding environment. The device has a simple structure and is easy to disassemble and maintain. It can well offset the emitted noise through reflected noise to reduce noise, and can reduce the vibration propagation of noise, absorb and block noise, so as to improve the sound insulation treatment effect of high-frequency noise and low-frequency noise in a composite form. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structural diagram of an internal combustion engine body of the present invention;

[0024] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0025] Figure 5 It is a schematic diagram of the structure of the reflective aluminum foil of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the first foamed plastic of the present invention.

[0027] In the figure: 1. first foam plastic; 101. connecting groove; 102. labyrinth cavity; 2. second foam plastic; 201. connecting block; 3. internal combustion engine body; 4. crankshaft; 5. combustion chamber; 6. reflective aluminum foil; 601. reflective groove; 602. diffusion column; 7. piston; 8. convex plate; 9. slot; 10. block; 11. cavity; 12. natural rubber; 13. sound insulation board. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 6 The present invention provides a technical solution: an internal combustion engine mounting structure with sound insulation function, comprising:

[0030] An internal combustion engine body 3, a first foamed plastic 1 being detachably connected to one side wall of the internal combustion engine body 3;

[0031] The second foamed plastic 2 is detachably mounted on the other side wall of the internal combustion engine body 3, and the end of the second foamed plastic 2 cooperates with the end of the first foamed plastic 1 to form a sound insulation groove for the internal combustion engine body 3;

[0032] The foam plastic is fixed to the side wall of the internal combustion engine body 3 through a detachable connection design to form a sound insulation structure. The two foam plastics are combined at the ends to form a sound insulation groove, which plays a role in reducing noise transmission.

[0033] At least two reflective aluminum foils 6 are symmetrically arranged on the inner wall of the sound insulation groove, and one side wall of the reflective aluminum foil 6 includes a reflective groove 601 and a diffusion column 602. The reflective groove 601 is opened on one side wall of the reflective aluminum foil 6 to extend along its height direction, and the diffusion column 602 is staggered from the reflective groove 601.

[0034] The noise reflection effect is enhanced by symmetrical distribution, so that the noise and reflected noise cancel each other out to eliminate sound. The surface of the aluminum foil is provided with reflection grooves 601 and diffusion columns 602. These designs help to improve the reflection and diffusion of sound and reduce the propagation of noise. The reflection grooves 601 extend along the height direction of the aluminum foil, and the diffusion columns 602 help to disperse the sound in the groove so that it can be more effectively reduced. At the same time, the diffusion columns 602 can avoid noise concentration and make the noise evenly distributed in the sound insulation groove.

[0035] The convex plate 8 protrudes from the outer surface of the internal combustion engine body 3 and extends into the inner side of the sound insulation groove to form heat dissipation and noise blocking.

[0036] The convex plate 8 can increase the heat dissipation surface and isolate part of the noise through physical design.

[0037] Preferably, a combustion chamber 5 is provided on the internal combustion engine body 3, a piston 7 is slidably connected to the inside of the combustion chamber 5, a crankshaft 4 is rotatably installed at the lower end of the inner side of the internal combustion engine body 3, and the crankshaft 4 and the piston 7 are matched through a connecting rod.

[0038] Preferably, a connection block 201 is fixed at one end of the second foam plastic 2 , and a connection groove 101 matching with the connection block 201 is formed at one end of the first foam plastic 1 .

[0039] It is convenient to quickly connect the first foam plastic 1 and the second foam plastic 2, and improve the sealing and sound insulation effect of the connection between the two.

[0040] Preferably, the cross section of the connecting block 201 is T-shaped.

[0041] Avoid separation of the ends of the first foamed plastic 1 and the second foamed plastic 2, and improve the close contact effect of the ends of the two.

[0042] Preferably, a card slot 9 is provided at the inner lower end of the first foamed plastic 1 , and a card block 10 cooperating with the card slot 9 is provided on the lower surface of the internal combustion engine body 3 .

[0043] It is convenient to disassemble and install the first foamed plastic 1, and the convenience of maintenance is improved in the later stage.

[0044] Preferably, a labyrinth cavity 102 is formed on one end surface of the first foamed plastic 1, and the labyrinth cavity 102 is connected to the interior of the reflective groove 601;

[0045] The labyrinth cavity 102 facilitates the outflow of hot air, and the labyrinth cavity 102 can effectively weaken the linear propagation of noise.

[0046] Preferably, a natural rubber 12 is fixed to one side of the first foamed plastic 1 , a sound insulation board 13 is connected to one end of the natural rubber 12 , a cavity 11 is provided between the sound insulation board 13 and the first foamed plastic 1 , and the reflective aluminum foil 6 is fixed to the sound insulation board 13 .

[0047] This facilitates the sound insulation board 13 to achieve elastic floating, thereby greatly weakening the propagation of noise along the solid and improving the sound insulation effect.

[0048] Preferably, the natural rubber 12 is in an "X" shape, and the thickness of the natural rubber 12 is 0.5-1.5 mm.

[0049] This facilitates achieving better elasticity effects.

[0050] Preferably, cellulose is coated between the sound insulation board 13 and the reflective aluminum foil 6 .

[0051] It is convenient to absorb noise to reduce the transmission of noise.

[0052] Preferably, the first foamed plastic 1 and the second foamed plastic 2 are equal in shape and size.

[0053] It is convenient to disassemble, maintain and replace both of them later.

[0054] The working principle and use process of the present invention are as follows: when in use, the first foamed plastic 1 is matched with the internal combustion engine body 3 through the card slot 9 and the card block 10, and then the second foamed plastic 2 is matched with the first foamed plastic 1 through the connecting block 201 and the connecting slot 101, and at the same time, the second foamed plastic 2 is matched with the internal combustion engine body 3 through the card slot 9 and the card block 10, so that the first foamed plastic 1 and the second foamed plastic 2 can be installed. When the piston 7 inside the first foamed plastic 1 moves up and down, the crankshaft 4 is driven to rotate, and the noise is transmitted to the outside of the internal combustion engine body 3. The noise can be reflected by the convex plate 8, the reflective groove 601 and the diffusion column 602, and the noise The sound interacts with the reflected noise to dissipate. At the same time, there is air between the reflective aluminum foil 6 and the internal combustion engine body 3 to further weaken the noise. The sound insulation board 13 and the first foamed plastic 1 are elastically matched through the natural rubber 12. The elastic floating can reduce the vibration transmission of the noise, and the sound insulation board 13 can block the noise to increase the sound insulation effect. In addition, the internal combustion engine body 3 uses the convex plate 8 to increase the heat dissipation area to the outside, and the hot air flows out through the labyrinth cavity 102. At the same time, the labyrinth cavity 102 can further weaken the noise that follows the movement of the hot air. After the first foamed plastic 1 or the second foamed plastic 2 is damaged in the later stage, it can be disassembled and replaced, and maintenance is convenient.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An internal combustion engine mounting structure with sound insulation function, characterized in that: include: An internal combustion engine body (3), a first foamed plastic (1) being detachably connected to a side wall of the internal combustion engine body (3); A second foamed plastic (2) is detachably mounted on the other side wall of the internal combustion engine body (3), and an end of the second foamed plastic (2) cooperates with an end of the first foamed plastic (1) to form a sound insulation groove for the internal combustion engine body (3); At least two reflective aluminum foils (6) are symmetrically arranged on the inner wall of the sound insulation groove, and one side wall of the reflective aluminum foil (6) includes a reflective groove (601) and a diffusion column (602), the reflective groove (601) is opened on one side wall of the reflective aluminum foil (6) to extend along its height direction, and the diffusion column (602) and the reflective groove (601) are staggered; The convex plate (8) protrudes from the outer surface of the internal combustion engine body (3) and extends into the inner side of the sound insulation groove to form heat dissipation and noise blocking.

2. The internal combustion engine mounting structure with sound insulation function according to claim 1, characterized in that: The internal combustion engine body (3) is provided with a combustion chamber (5), the inner side of the combustion chamber (5) is slidably connected with a piston (7), a crankshaft (4) is rotatably mounted on the lower end of the inner side of the internal combustion engine body (3), and the crankshaft (4) and the piston (7) are matched through a connecting rod.

3. The internal combustion engine mounting structure with sound insulation function according to claim 1, characterized in that: A connection block (201) is fixed to one end of the second foamed plastic (2), and a connection groove (101) matching with the connection block (201) is formed at one end of the first foamed plastic (1).

4. The internal combustion engine mounting structure with sound insulation function according to claim 3, characterized in that: The cross section of the connecting block (201) is in a "T" shape.

5. The internal combustion engine mounting structure with sound insulation function according to claim 1, characterized in that: A card slot (9) is provided at the lower inner end of the first foamed plastic (1), and a card block (10) matching the card slot (9) is provided on the lower surface of the internal combustion engine body (3).

6. The internal combustion engine mounting structure with sound insulation function according to claim 1, characterized in that: A labyrinth cavity (102) is formed on one end surface of the first foamed plastic (1), and the labyrinth cavity (102) is connected to the interior of the reflective groove (601).

7. The internal combustion engine mounting structure with sound insulation function according to claim 1, characterized in that: A natural rubber (12) is fixed to one side of the first foamed plastic (1), one end of the natural rubber (12) is connected to a sound insulation board (13), a cavity (11) is provided between the sound insulation board (13) and the first foamed plastic (1), and the reflective aluminum foil (6) is fixed to the sound insulation board (13).

8. The internal combustion engine mounting structure with sound insulation function according to claim 7, characterized in that: The natural rubber (12) is in an "X" shape, and the thickness of the natural rubber (12) is 0.5-1.5 mm.

9. The internal combustion engine mounting structure with sound insulation function according to claim 7, characterized in that: Cellulose is coated between the sound insulation board (13) and the reflective aluminum foil (6).

10. The internal combustion engine mounting structure with sound insulation function according to claim 1, characterized in that: The first foamed plastic (1) and the second foamed plastic (2) are equal in shape and size.

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