Sound insulation device for inhibiting noise generated by gravel machine

Abstract

The utility model discloses a sound insulation device for restraining a gravel machine from generating noise, and relates to the technical field of gravel machines, the sound insulation device comprises a gravel machine body, a sound insulation layer is arranged on the outer side of the gravel machine body, the sound insulation layer comprises an internal sound absorption layer, a middle sound insulation layer and an external protection layer, and the middle sound insulation layer sequentially comprises a mass damping layer and a porous damping layer from inside to outside. A screw rod is rotationally mounted on the gravel machine body, bearing seats are arranged on the two sides of the outer portion of the gravel machine body, upper supporting columns are fixedly mounted at the bottoms of the bearing seats, lower supporting columns are arranged below the upper supporting columns, and buffering mechanisms are arranged between the upper supporting columns and the lower supporting columns. According to the sound insulation device for restraining the gravel machine from generating the noise, the sound insulation layer can absorb sound waves, enhance the damping effect, reduce sound wave transmission and isolate low and medium frequency noise, the reflection layer can reduce transmission of the sound waves through the sound insulation layer, the sound insulation effect is improved, the vibration amplitude and frequency are reduced through the buffering mechanism, and the noise reduction effect is improved. And noise generated by vibration is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and stone machines, and more specifically, the utility model relates to a sound insulation device for suppressing the noise generated by sand and stone machines. Background Art

[0002] With the rapid development of industrialization, heavy machinery such as sand and stone machines has been widely used in industries such as construction and mining. However, the problem of noise pollution generated by these devices during operation is becoming increasingly serious. Prolonged exposure to a high-noise environment will not only affect the physical and mental health of workers, reduce work efficiency, but also may have an adverse impact on the surrounding environment.

[0003] In view of the problem of noise pollution generated by heavy machinery such as sand and stone machines, the existing sound insulation devices on the current market have the following deficiencies: 1. Traditional sound insulation devices can only have a limited sound insulation effect on the noise in a certain frequency band and cannot comprehensively cover the noise frequency range generated by sand and stone machines; 2. Sand and stone machines will generate strong vibrations during operation, and these vibrations are transmitted to the surrounding environment through the equipment structure to form noise. Traditional sound insulation devices often ignore the problem of vibration transmission, resulting in poor noise reduction effects. In response to the above problems, this device was invented. Content of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a sound insulation device for suppressing the noise generated by sand and stone machines to solve the problems raised in the above background art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solution: A sound insulation device for suppressing the noise generated by sand and stone machines, including a sand and stone machine body, a sound insulation layer is arranged outside the sand and stone machine body. The sound insulation layer includes an inner sound absorption layer, a middle sound insulation layer and an outer protection layer. The middle sound insulation layer includes a mass damping layer and a porous damping layer from inside to outside in sequence. A screw rod is rotatably installed on the sand and stone machine body. Bearing seats are arranged on both sides outside the sand and stone machine body, and both ends of the screw rod are rotatably connected to the bearing seats on both sides respectively. An upper support column is fixedly installed at the bottom of the bearing seat, a lower support column is arranged below the upper support column, and a buffer mechanism is arranged between the upper support column and the lower support column.

[0006] Further, the inner sound absorption layer is made of glass wool material.

[0007] Further, the mass damping layer is composed of a lead plate and rubber through an adhesive.

[0008] Further, the porous damping layer is made of mineral wool material.

[0009] Further, the outer protection layer is made of foamed polypropylene board.

[0010] Furthermore, a reflective layer is provided outside the sound insulation layer, and the reflective layer is made of a metal foil material.

[0011] Furthermore, the buffer mechanism includes a connection frame fixedly installed at the bottom of the upper support column. A connection groove is formed at the top of the lower support column. The connection frame is slidably connected to the connection groove. A spring is arranged in the connection groove. A first cushion block and a second cushion block are respectively and fixedly installed at the top and bottom of the spring.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model is provided with a sound insulation layer, which includes an internal sound absorption layer, a middle sound insulation layer and an external protection layer. Among them, the internal sound absorption layer absorbs sound waves, the middle sound insulation layer enhances the damping effect and reduces the transmission of sound waves, and the external protection layer isolates medium and low-frequency noises; a reflective layer is provided, and the reflective layer can reflect some sound waves, reduce the transmission of sound waves through the sound insulation layer, and improve the sound insulation effect; a buffer mechanism is provided, and the upper support column makes a relative movement in the vertical direction with respect to the lower support column, thereby reducing the transmission of vibration to the surrounding environment. When vibrating, the spring absorbs and releases the vibration force through its own compression and extension, reduces the amplitude and frequency of vibration, and effectively reduces the noise generated by vibration. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure provided by the present utility model;

[0016] Figure 2 It is a cross-sectional view of the sound insulation layer provided by the present utility model;

[0017] Figure 3 Provided by the present utility model Figure 2 An enlarged schematic view of area A;

[0018] Figure 4 It is a schematic diagram of the structure of the buffer structure provided by the present utility model.

[0019] Explanation of the reference numerals in the drawings:

[0020] 1. Sandstone machine body; 2. Sound insulation layer; 201. Built-in sound absorption layer; 202. Middle sound insulation layer; 2021. Mass damping layer; 2022. Porous damping layer; 203. External protection layer; 3. Reflection layer; 4. Screw rod; 5. Bearing seat; 6. Upper support column; 7. Lower support column; 8. Buffer mechanism; 801. Connection frame; 802. Connection groove; 803. Spring; 804. First cushion block; 805. Second cushion block. Detailed implementation manners

[0021] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0022] In order to enable those skilled in the art of this technology to better understand the solution of this application, the following further details the application in conjunction with the drawings and specific implementation manners.

[0023] Embodiment:

[0024] Referring to the attached Figures 1 - 3 , a sound insulation device for suppressing the noise generated by a sandstone machine in this embodiment includes a sandstone machine body 1. A sound insulation layer 2 is provided outside the sandstone machine body 1. The sound insulation layer 2 includes a built-in sound absorption layer 201, a middle sound insulation layer 202 and an external protection layer 203. The middle sound insulation layer 202 sequentially includes a mass damping layer 2021 and a porous damping layer 2022 from the inside out. Among them, the built-in sound absorption layer 201 absorbs sound waves, the middle sound insulation layer 202 enhances the damping effect and reduces the transmission of sound waves, and the external protection layer 203 isolates medium and low-frequency noises. A reflection layer 3 is provided outside the sound insulation layer 2. The reflection layer 3 is made of a metal foil material and can reflect part of the sound waves, reducing the transmission of sound waves through the sound insulation layer 2, thereby improving the sound insulation effect.

[0025] The built-in sound-absorbing layer 201 is made of glass wool material. The glass wool material absorbs sound waves through its own porosity, effectively reducing the direct transmission of sound waves and improving the sound insulation effect. The mass damping layer 2021 is composed of a lead plate and rubber through an adhesive. Lead can effectively increase the mass of the mass damping layer 2021, thereby enhancing its damping effect on vibration. Rubber can effectively convert mechanical vibration energy into heat energy, thereby reducing the transmission of sound waves. The porous damping layer 2022 is made of mineral wool material. Through the tiny pore structure inside the mineral wool material, energy loss occurs when sound waves propagate in the material, further reducing noise. The external protective layer 203 is made of foamed polypropylene board. The closed pore structure of the foamed polypropylene board can isolate medium-low to medium-high frequency noise and enhance the sound insulation effect.

[0026] Refer to the attached Figure 1 and Figure 4 As shown in the figure, a screw rod 4 is rotatably installed on the sandstone machine body 1. Bearing seats 5 are arranged on both sides of the outside of the sandstone machine body 1. The two ends of the screw rod 4 are respectively rotatably connected to the bearing seats 5 on both sides. A upper support column 6 is fixedly installed at the bottom of the bearing seat 5. A lower support column 7 is arranged below the upper support column 6. A buffer mechanism 8 is arranged between the upper support column 6 and the lower support column 7. The buffer mechanism 8 includes a connection frame 801 fixedly installed at the bottom of the upper support column 6. A connection groove 802 is opened at the top of the lower support column 7. The connection frame 801 is slidably connected to the connection groove 802. A spring 803 is arranged in the connection groove 802. The top and bottom of the spring 803 are respectively fixedly installed with a first cushion block 804 and a second cushion block 805. Among them, the first cushion block 804 is fixedly connected to the bottom of the upper support column 6, and the second cushion block 805 is fixedly connected to the bottom of the connection groove 802. The first cushion block 804 and the second cushion block 805 are respectively fixed to the top and bottom of the spring 803. They not only fix the position of the spring 803, but also can further disperse and reduce the transmission of vibration.

[0027] When the sandstone machine body 1 vibrates due to work, the upper support column 6 will receive the corresponding vibration force. Due to the sliding connection between the connection frame 801 and the connection groove 802, the upper support column 6 can perform relative movement in the vertical direction relative to the lower support column 7 within a certain range. At this time, the spring 803 will play an elastic role to buffer the vibration. Specifically, the spring 803 absorbs and releases the vibration force through its own compression and extension, thereby reducing the amplitude and frequency of the vibration, reducing the generation of noise, improving the working environment, and reducing the interference of noise to the staff and the surrounding environment.

[0028] Finally: The above description is only the preferred embodiment of the present invention and is not used to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sound insulation device for suppressing noise generated by a sand and gravel machine, comprising a sand and gravel machine body (1), characterized in that: A sound insulation layer (2) is arranged on the outside of the sand and stone machine body (1), the sound insulation layer (2) comprising an internal sound absorption layer (201), a middle sound insulation layer (202) and an external protective layer (203), the middle sound insulation layer (202) comprising a mass damping layer (2021) and a porous damping layer (2022) in sequence from the inside to the outside, a screw rod (4) is rotatably mounted on the sand and stone machine body (1), bearing seats (5) are arranged on both sides of the outside of the sand and stone machine body (1), and the two ends of the screw rod (4) are rotatably connected to the bearing seats (5) on both sides respectively, an upper support column (6) is fixedly mounted on the bottom of the bearing seat (5), a lower support column (7) is arranged below the upper support column (6), and a buffer mechanism (8) is arranged between the upper support column (6) and the lower support column (7).

2. A sound insulation device for suppressing noise generated by a sandstone machine according to claim 1, characterized in that: The built-in sound absorption layer (201) is made of glass wool material.

3. The sound insulation device for suppressing noise generated by a sandstone machine according to claim 1 is characterized in that: The mass damping layer (2021) is composed of a lead plate and rubber via an adhesive.

4. The sound insulation device for suppressing noise generated by a sandstone machine according to claim 1 is characterized in that: The porous damping layer (2022) is made of mineral wool material.

5. The sound insulation device for suppressing noise generated by a sandstone machine according to claim 1 is characterized in that: The external protective layer (203) is made of a foamed polypropylene sheet.

6. The sound insulation device for suppressing noise generated by a sandstone machine according to claim 1 is characterized in that: A reflective layer (3) is arranged outside the sound insulation layer (2), and the reflective layer (3) is made of metal foil material.

7. The sound insulation device for suppressing noise generated by a sandstone machine according to claim 1 is characterized in that: The buffer mechanism (8) comprises a connection frame (801) fixedly mounted on the bottom of the upper support column (6); a connection groove (802) is provided on the top of the lower support column (7); the connection frame (801) is slidably connected to the connection groove (802); a spring (803) is provided in the connection groove (802); a first cushion block (804) and a second cushion block (805) are fixedly mounted on the top and bottom of the spring (803), respectively.

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