Sound absorbing mat for noise reduction in a room of an excavator

Abstract

The utility model relates to engineering car carriage technical field especially relates to a sound absorption felt noise reduction excavator chamber. Its technical scheme includes machine room main part and installs the sound absorption felt main body in the four walls of machine room main part, the inner wall of machine room main part is equipped with multiple groups for the locking piece of sound absorption felt main body installation, the locking piece includes with the fixed connection of the inner wall of machine room main part's limiting post, the extruding block of setting installation is equipped with on the limiting post, the top of extruding block is connected with the fixed frame that is arranged perpendicularly with it, the fixed frame is slidably arranged with the sliding block, the threaded column is rotatably connected with screw thread on the sliding block, the side of sound absorption felt main body is equipped with multiple groups with the limiting slot position of threaded column correspondence. The utility model structure is convenient for dismantling, and the sound absorption felt is cleaned, replaced and the inner wall condition is checked in the later period, ensures that the sound absorption felt plays the role of noise reduction stably for a long time, creates the quiet, comfortable working environment for the operator.

Description

Technical Field

[0001] This utility model relates to the field of engineering vehicle carriage technology, and in particular to a sound-absorbing felt for noise reduction in excavator compartments. Background Technology

[0002] Excavator operation generates complex and diverse noise sources. During engine operation, the high-speed reciprocating motion of the piston, the continuous rotation of the crankshaft, and the strong airflow impact of intake and exhaust produce mechanical and aerodynamic noise. When the hydraulic system is working, pressure fluctuations during the hydraulic pump's oil intake and discharge processes, as well as the turbulence and friction of the oil in the pipelines, also generate significant noise. The cooling fan, rotating at high speed to maintain normal equipment operation, also produces a piercing sound as it cuts through the air. These noises converge in the confined space of the excavator cab, exposing operators to prolonged exposure to high-intensity noise, which can easily lead to hearing damage, nervous system disorders, and other health problems. Sound-absorbing felt, as a new type of noise reduction material, possesses excellent noise reduction potential due to its unique structure. Its internal interconnected and complex microporous structure allows sound waves to be continuously reflected and scattered within the pores after entering the felt, rubbing against the fiber walls and converting sound energy into heat energy for dissipation, thus achieving efficient sound absorption. Compared to sound-absorbing cotton, sound-absorbing felt has a denser fiber arrangement and smaller, more uniform pores, making it particularly effective at absorbing high-frequency noise. It also has a certain ability to absorb mid- and low-frequency noise. When sound-absorbing felt is assembled with the inner wall of the machine room, it may fall off due to vibration because the machine room is under constant vibration. In view of the above reasons, this application proposes a sound-absorbing felt that is easy to install and not easy to fall off for use in noise reduction excavator chambers. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a sound-absorbing felt that is easy to install and not easy to fall off for use in noise reduction excavator cabs.

[0004] The technical solution of this utility model is: a sound-absorbing felt noise reduction excavator cab, including a cab body and sound-absorbing felt bodies installed on the four walls of the cab body. The inner wall of the cab body is equipped with multiple sets of locking parts for installing the sound-absorbing felt bodies.

[0005] The locking component includes a limiting post fixedly connected to the inner wall of the main body of the machine room. A pressing block is sleeved on the limiting post. A fixed frame is connected to the top of the pressing block at a perpendicular angle. A slider is slidably arranged in the fixed frame. A threaded post is threadedly connected to the slider. Multiple sets of limiting grooves corresponding to the positions of the threaded posts are opened on the side of the sound-absorbing felt body.

[0006] Optionally, the sound-absorbing felt body includes a metal frame surrounding it, and a limiting groove is formed on the side of the metal frame.

[0007] Optionally, the metal frame is provided with the same number of limiting holes as the locking components, and the limiting holes are provided corresponding to the limiting posts.

[0008] Optionally, the extrusion block is provided with a limiting through hole larger than the diameter of the limiting post, and a first spring is provided on one side of the limiting through hole and connected to the back side wall of the extrusion block. The first spring is sleeved and installed on the outer ring of the limiting post.

[0009] Optionally, the fixed frame has a movable opening, and a second spring is fixedly connected to the inner wall of one side of the movable opening.

[0010] Optionally, the other end of the second spring is fixedly connected to the side of the slider, the slider having an "I" shaped structure, and the slider being slidably disposed with respect to the inner wall of the moving port.

[0011] Optionally, the slider is provided with a through-hole, and both the inner walls of the lifting hole and the limiting groove are provided with threaded grooves that match the threaded column.

[0012] Optionally, the limiting column is fixedly connected to the inner wall of the machine room body by bolts.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] This utility model pre-installs locking components on the inner wall of the machine room body. The locking components are made of plastic or metal and are fixed to the inner wall by screws. Combined with the upper limit hole of the sound-absorbing felt body, the sound-absorbing felt body and the locking components are assembled. The sound-absorbing felt body can be firmly fixed to the inner wall of the machine room body by pressing it. This fixing method is not only convenient to install, but also can withstand a certain amount of vibration and external force, preventing the sound-absorbing felt from falling off during the operation of the excavator.

[0015] Furthermore, by opening the limiting groove, the sound-absorbing felt body and the locking parts are fully and firmly assembled, thereby achieving stable assembly. At the same time, it is easy to disassemble and clean, replace or inspect the inner wall of the sound-absorbing felt.

[0016] Furthermore, the installation of the sound-absorbing felt body is buffered by the setting of the second spring and the compression block, which can further reduce the noise caused by equipment vibration transmitted through the structure, while enhancing the durability of the sound-absorbing felt, making it less likely to fall off or be damaged in long-term vibration environment.

[0017] In summary, the structure of this utility model is easy to disassemble, facilitating the cleaning and replacement of the sound-absorbing felt and the inspection of the inner wall condition, ensuring that the sound-absorbing felt can play a stable noise reduction role for a long time and creating a quiet and comfortable working environment for operators. Attached Figure Description

[0018] Figure 1A partial structural cross-sectional view of this utility model is provided;

[0019] Figure 2 A structural schematic diagram of the sound-absorbing felt body and locking component in this utility model is provided;

[0020] Figure 3 This is a schematic diagram of the structure of the sound-absorbing felt body;

[0021] Figure 4 This is an exploded view of the locking mechanism.

[0022] Figure label:

[0023] 1. Main body of the machine room;

[0024] 2. Sound-absorbing felt body; 21. Limiting hole; 22. Limiting groove;

[0025] 3. Locking component; 31. Limiting post; 32. Pressing block; 320. Limiting through hole; 33. Fixing frame; 330. Moving port; 34. Second spring; 35. Sliding block; 350. Lifting hole; 36. Threaded post; 37. First spring. Detailed Implementation

[0026] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0027] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0028] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0029] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0030] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0031] Example

[0032] like Figures 1-4 As shown, this utility model proposes a sound-absorbing felt noise reduction excavator cab, including a cab body 1 and sound-absorbing felt bodies 2 installed on the four walls of the cab body 1. Multiple sets of locking components 3 for installing the sound-absorbing felt bodies 2 are installed on the inner wall of the cab body 1. Each locking component 3 includes a limiting post 31 fixedly connected to the inner wall of the cab body 1, and the limiting post 31 is fixedly connected to the inner wall of the cab body 1 by bolts. A pressing block 32 is sleeved on the limiting post 31, and the pressing block 32 has a limiting through hole 320 larger than the diameter of the limiting post 31. A first spring 37 connected to the back side wall of the pressing block 32 is provided on one side of the limiting through hole 320. The first spring 37 is sleeved on the outer ring of the limiting post 31, and the top of the pressing block 32... A fixed frame 33 is connected to the fixed frame 33 at a perpendicular angle. A movable opening 330 is provided on the fixed frame 33. A second spring 34 is fixedly connected to the inner wall of one side of the movable opening 330. A slider 35 is slidably arranged inside the fixed frame 33. The other end of the second spring 34 is fixedly connected to the side of the slider 35. The slider 35 has an "I" shaped structure. Combined with the "I" shaped structure of the slider 35, the slider 35 slides stably along the movable opening 330, and the slider 35 slides with the inner wall of the movable opening 330. A threaded post 36 is rotatably connected to the slider 35. A lifting hole 350 is provided through the slider 35. The inner walls of the lifting hole 350 and the limiting groove 22 are both provided with threaded grooves that match the threaded post 36.

[0033] like Figure 2 and Figure 3 As shown, the sound-absorbing felt body 2 has multiple sets of limiting grooves 22 on its side corresponding to the positions of the threaded post 36; the sound-absorbing felt body 2 includes a metal frame around it, the limiting grooves 22 are opened on the side of the metal frame, and the metal frame has the same number of limiting holes 21 as the locking parts 3, and the limiting holes 21 are set corresponding to the limiting posts 31.

[0034] In this embodiment, by rotating multiple sets of threaded posts 36 to move the threaded posts 36 away from the sound-absorbing felt body 2, when the limiting hole 21 is pushed to the position of the limiting post 31, the extrusion block 32 compresses the first spring 37, thereby realizing the corresponding installation of the sound-absorbing felt body 2. When the limiting groove 22 corresponds to the position of the threaded post 36, the threaded post 36 is rotated so that its bottom end is threadedly installed to the limiting groove 22, thereby fixing the position of the sound-absorbing felt body 2. The sound-absorbing felt body 2 reduces noise and absorbs sound in the machine room body 1, improving the comfort of the operating room. The push-type extrusion block 32 and slider 35 proposed in this embodiment are adapted to the installation of sound-absorbing felt bodies 2 of different thicknesses.

[0035] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A sound absorbing felt noise reduction excavator cabin comprising a cabin body (1) and a sound absorbing felt body (2) installed on the four walls of the cabin body (1), characterized in that: The inner wall of the main body (1) of the machine room is equipped with multiple sets of locking parts (3) for the installation of the sound-absorbing felt body (2); The locking component (3) includes a limiting post (31) fixedly connected to the inner wall of the main body (1) of the machine room. A pressing block (32) is sleeved on the limiting post (31). A fixing frame (33) is connected to the top of the pressing block (32) at a perpendicular angle to it. A slider (35) is slidably arranged in the fixing frame (33). A threaded post (36) is threadedly connected to the slider (35). The side of the sound-absorbing felt body (2) has multiple sets of limiting grooves (22) corresponding to the positions of the threaded post (36).

2. A sound absorbing felt noise reducing excavator cab according to claim 1, characterized in that The sound-absorbing felt body (2) includes a metal frame surrounding it, and a limiting groove (22) is provided on the side of the metal frame.

3. A sound absorbing felt noise reducing excavator cab according to claim 2, characterized in that The metal frame has the same number of limiting holes (21) as the locking piece (3), and the limiting holes (21) are set corresponding to the limiting posts (31).

4. A sound absorbing felt noise reducing excavator cab according to claim 1, characterized in that The extrusion block (32) has a limiting through hole (320) larger than the diameter of the limiting post (31). A first spring (37) connected to the back side wall of the extrusion block (32) is provided on one side of the limiting through hole (320). The first spring (37) is sleeved and installed on the outer ring of the limiting post (31).

5. A sound absorbing felt noise reducing excavator cab according to claim 1, characterized in that The fixed frame (33) has a movable opening (330), and a second spring (34) is fixedly connected to the inner wall of one side of the movable opening (330).

6. A sound absorbing felt noise reducing excavator cab according to claim 5, characterized in that The other end of the second spring (34) is fixedly connected to the side of the slider (35), which has an "I" shaped structure and is slidably disposed with respect to the inner wall of the moving port (330).

7. A sound absorbing felt noise reducing excavator cab according to claim 6, characterized in that The slider (35) has a lifting hole (350) that passes through it, and the inner walls of the lifting hole (350) and the limiting groove (22) are both provided with threaded grooves that match the threaded column (36).

8. A sound absorbing felt noise reducing excavator cab according to claim 1, characterized in that The limiting post (31) is fixedly connected to the inner wall of the main body (1) of the machine room by bolts.

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