A master control room and a heading machine thereof
By using vibration isolation bases, vibration reduction mechanisms, and acoustic metamaterial composite structural panels in the main control room, the vibration and noise problems of the main control room were solved, resulting in a significant reduction in noise and an improvement in the construction environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-07
AI Technical Summary
The existing main control room experiences severe vibration and noise during tunneling, especially excessive low-frequency noise, which threatens the health of operators. Existing noise reduction devices are ineffective.
The system employs a vibration isolation base, a vibration damping mechanism, and an acoustic metamaterial composite structure plate. The vibration isolation base reduces the transmission of equipment vibration, the vibration damping mechanism reduces the vibration of the main control room itself, the acoustic metamaterial composite structure plate weakens noise in specific frequency bands, and the damping felt and sound insulation cotton reduce high-frequency noise.
It effectively reduces noise levels in the main control room, meets design specifications, reduces hardware failures, and improves the quality of the construction environment.
Smart Images
Figure CN224468484U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel construction technology, and in particular to a main control system. Background Technology
[0002] Because open-face TBMs use cutterheads to crush rock during excavation, they generate strong vibrations and noise, which are transmitted to the main control room through the air and connecting structures. Low-frequency noise transmitted through the air penetrates the walls and reaches the main control room, causing noise levels inside the control room to exceed industrial production standards. Simultaneously, the vibrations from the cutterhead crushing rock are transmitted to the main control room, causing it to vibrate and generate low-frequency noise. The combined effect of these two types of noise results in the noise level inside the main control room far exceeding the 60dB requirement for main control rooms, centralized control rooms, and communication rooms in the "Design Code for Noise Control in Industrial Enterprises." Existing noise reduction devices for main control rooms, such as the one disclosed in Chinese Utility Model Patent No. CN214942813U, use adhesive damping felt, which has poor noise reduction effects, only weakening the high-frequency range of noise and having no effect on low-frequency noise. Therefore, a new type of vibration-damping and noise-reducing main control room is needed to achieve internal noise levels below 60dB to protect the physical and mental health of operators. Utility Model Content
[0003] To address the shortcomings in the aforementioned background technology, this utility model proposes a main control room and its tunneling machine, which solves the problems of high vibration and noise in the main control room during tunneling in the prior art.
[0004] The technical solution of this utility model is implemented as follows: A main control room includes a noise-reducing main control room body, which comprises a bottom frame and an upper chamber structure. A vibration isolation base is provided at the bottom of the bottom frame, and a vibration damping mechanism is installed within the bottom frame. The upper chamber structure is composed of several acoustic metamaterial composite structural plates. This utility model reduces the vibration transmitted from the equipment cutter head to the main control room through the vibration isolation base; reduces the vibration of the main control room itself through the vibration damping mechanism within the bottom frame, thereby reducing the noise generated by vibration in the main control room; and weakens low-frequency and high-frequency noise in specific frequency bands through the acoustic metamaterial composite structural plates, achieving a significant reduction in the internal noise of the main control room; thus meeting design specifications.
[0005] Further optimization reveals that the upper chamber structure comprises a floor plate, a top plate, and wall panels, with both the top plate and wall panels being acoustic metamaterial composite structural panels. Specifically, the acoustic metamaterial composite structural panel includes a wall panel frame and interior panels and an outer shell installed on the inner and outer sides of the wall panel frame. A sound insulation and noise reduction layer and a noise-reducing acoustic metamaterial structure are provided between the outer shell and the interior panels. The sound insulation and noise reduction layer weakens high-frequency noise, while the noise-reducing acoustic metamaterial structure is used to weaken low-frequency noise in specific frequency bands. The combination of these two elements achieves a significant reduction in noise within the main control room.
[0006] Further optimization reveals that the noise-reducing metamaterial structure includes a lightweight frame embedded within the interior trim panel, an acoustic diaphragm mounted on the lightweight frame, and a tuned mass block mounted on the acoustic diaphragm. This noise-reducing metamaterial structure can target low-to-mid-frequency noise at specific frequencies. It utilizes the resonance of the mass block on the diaphragm to dissipate noise energy propagating in the air, thereby reducing low-to-mid-frequency noise at specific frequencies and achieving vibration reduction and noise reduction within the main control room.
[0007] Further optimization reveals that the sound insulation and noise reduction layer comprises damping felt and sound insulation cotton. The damping felt is fixed to the inner surface of the outer shell, and the sound insulation cotton is adhered to the damping felt. The rubber damping felt can effectively reduce the high-frequency vibration generated by the outer shell of the main control room during equipment excavation, thereby reducing the noise generated by its own high-frequency vibration. The sound insulation cotton can effectively reduce the transmission of high-frequency noise in the roof and wall panels, effectively reducing the noise intensity inside the main control room.
[0008] Further optimization involves fixing the outer shell to the wall panel frame, while the interior panels are installed on the wall panel frame using a snap-fit method; this ensures the stability of the acoustic metamaterial composite structure panel. A particle damping vibration reduction device is installed on the inner wall of the outer shell, located between the outer shell and the damping felt. This particle damping vibration reduction device can significantly suppress low-frequency vibrations of the outer shell, reducing low-frequency noise generated by these vibrations.
[0009] Further preferably, the vibration damping mechanism is a particle damping vibration damping device, which includes a housing fixed to a bottom frame, and damping particles are disposed inside the housing. Further preferably, the damping particles are bearing steel particles with a diameter of 1mm to 6mm; the filling rate of the damping particles inside the housing is 86% to 98%; ensuring the vibration damping effect.
[0010] Further optimization involves using a spring damper, a rubber damping pad, or a wire rope damper as the vibration isolation base. The vibration isolation base has a damping effect, reducing the transmission of trailer vibration to the main control room.
[0011] A tunneling machine employs the aforementioned main control room, which is connected to a corresponding trailer via a vibration-damping base. The trailer and the vibration-damping base can be connected by welding, bolting, or riveting to secure the vibration-damping base to the trailer and prevent it from moving, thereby improving the stability of the main control room.
[0012] The beneficial effects of this utility model are as follows: A vibration-damping base is installed at the connection between the main control room and the trailer to reduce the vibration transmitted from the equipment cutter head to the main control room; a damping particle vibration reduction device is installed at the bottom of the main control room to reduce its own vibration, thereby reducing the noise generated by vibration. In the main control room, low-frequency and high-frequency noise in specific frequency bands are attenuated through an acoustic metamaterial composite structure plate, achieving a significant reduction in internal noise; through the above vibration reduction and noise reduction measures, the noise intensity inside the main control room is reduced, ensuring that the internal noise of the main control room meets the design specifications.
[0013] This utility model incorporates an acoustic metamaterial composite structure plate to attenuate low-frequency noise in specific frequency bands, while adding sound insulation cotton and damping felt to reduce high-frequency noise, thereby significantly reducing the noise inside the main control room.
[0014] Through the above design, this utility model effectively reduces the vibration of the main control room, reduces hardware failures of the control computer in the main control room caused by vibration, effectively reduces the transmission of noise generated during cutterhead excavation into the main control room, and improves the construction environment inside the main control room. Attached Figure Description
[0015] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the main control room structure of this utility model;
[0017] Figure 2 A schematic diagram showing the installation status of the bottom frame, vibration isolation base, and vibration damping mechanism;
[0018] Figure 3 This is a schematic diagram of the internal structure of the vibration damping mechanism;
[0019] Figure 4 This is a schematic diagram of the interior of an acoustic metamaterial composite structure plate.
[0020] Figure 5 This is a side view of the particle damping vibration reduction device installed on the inner wall of the outer shell in Example 2;
[0021] Figure 6 This is a front view schematic diagram of the particle damping vibration reduction device installed on the inner wall of the outer shell in Example 2. Detailed Implementation
[0022] 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.
[0023] Example 1, such as Figure 1 As shown, a main control room includes a noise-reducing main control room body 20, meaning the main control room body has a noise reduction function. Specifically, the noise-reducing main control room body 20 includes a bottom frame 2 and an upper chamber structure; the upper chamber structure is fixed to the bottom frame 2, which is a crisscross frame structure, and its main function is to maintain the stability of the bottom structure of the main control room, serving as a support for the main control room. A vibration isolation base 1 is provided at the bottom of the bottom frame 2, and a vibration damping mechanism 4 is installed inside the bottom frame 2. The vibration damping mechanism 4 mainly reduces the vibration generated by the bottom frame 2 during equipment vibration, reduces the vibration transmitted to the main control room floor 7, and simultaneously reduces the vibration generated by the floor 7 when internal operators move around, effectively reducing the vibration of the bottom frame and the noise generated by the vibration. The upper chamber structure is composed of several acoustic metamaterial composite structural plates. This invention reduces the vibration transmitted from the cutter head of the equipment to the main control room by using a vibration isolation base; reduces the vibration of the main control room itself by using a vibration damping mechanism in the bottom frame, thereby reducing the noise generated by the vibration in the main control room; and weakens low-frequency and high-frequency noise in specific frequency bands by using an acoustic metamaterial composite structure plate, thereby achieving a significant reduction in the noise inside the main control room; in order to meet the design specifications.
[0024] Example 2, a main control room, further optimized based on Example 1, wherein the upper chamber structure includes a bottom plate 7, a top plate 31, and wall panels 3, both of which are acoustic metamaterial composite structural plates. The bottom plate 7 can also be an acoustic metamaterial composite structural plate if needed. The bottom frame 2 and the vibration isolation base 1 are connected by welding, bolting, or riveting to fix the main control room to the corresponding position on the trailer. Simultaneously, the trailer and the bottom frame 2 rigidly connect the upper and lower parts of the vibration isolation base, effectively utilizing the vibration reduction effect of the vibration isolation base. Figure 2 As shown.
[0025] Specifically, such as Figure 4As shown, the acoustic metamaterial composite structure panel includes a wall panel frame 16 and interior panels 11 and an outer shell 10 installed on the inner and outer sides of the wall panel frame 16. The outer shell 10 is welded to the wall panel frame 16, and the interior panels 11 are installed on the wall panel frame 16 using a snap-fit method to ensure the stability of the acoustic metamaterial composite structure panel. A sound insulation and noise reduction layer and a noise-reducing metamaterial structure are provided between the outer shell 10 and the interior panels 11. The sound insulation and noise reduction layer weakens high-frequency noise, while the noise-reducing metamaterial structure is used to weaken low-frequency noise in specific frequency bands; the combination of the two achieves a significant reduction in noise inside the main control room.
[0026] In this embodiment, the noise-reducing metamaterial structure includes a lightweight frame 13 disposed within the interior panel 11. An acoustic diaphragm 14 is mounted on the lightweight frame 13, and a tuning mass 15 is mounted on the acoustic diaphragm 14. The lightweight frame 13 can be adhesively fixed to the interior panel, which is then installed on the wall panel frame using a locking mechanism, further improving the installation stability of the noise-reducing metamaterial structure. This noise-reducing metamaterial structure can reduce noise at specific mid-to-low frequencies by using the resonance of the mass on the diaphragm to dissipate noise energy propagating in the air, thereby reducing mid-to-low frequency noise and achieving vibration reduction and noise reduction in the main control room.
[0027] In this preferred embodiment, the sound insulation and noise reduction layer includes damping felt 8 and sound insulation cotton 9. The damping felt 8 is fixed to the inner surface of the outer shell 10 by adhesive bonding, and the sound insulation cotton 9 is pasted onto the damping felt 8. The damping felt 8 can effectively reduce the high-frequency vibration generated by the outer shell 10 of the main control room during equipment excavation, and reduce the noise generated by its own high-frequency vibration. The sound insulation cotton 9 can effectively reduce the transmission of high-frequency noise in the roof and wall panels of the main control room, and effectively reduce the noise intensity in the main control room. A particle damping vibration reduction device 41 is provided on the inner wall of the outer shell 10. The particle damping vibration reduction device is located between the outer shell 10 and the damping felt 8. In this embodiment, the particle damping vibration reduction device 41 is evenly distributed on the inner wall of the outer shell 10, which can significantly suppress the low-frequency vibration of the outer shell and reduce the low-frequency noise generated by the low-frequency vibration; Figure 5 , 6 As shown.
[0028] Example 3, a main control room, further optimized based on Example 2. In this example, the damping felt 8 is made of rubber damping felt, and the sound insulation cotton 9 is made of polyester fiber sound insulation cotton. The rubber damping felt is glued to the steel outer shell, and the polyester fiber sound insulation cotton is glued to the rubber damping felt. In this example, the vibration reduction mechanism 4 is a particle damping vibration reduction device. The bottom frame 2 of the main control room is a steel frame structure, and the particle damping vibration reduction device is installed around the sides of the steel frame. The particle damping vibration reduction device includes a shell 5, the shell structure of which is preferably, but not limited to, rectangular; the specific design is adjusted according to the structure to be damped. Figure 3As shown, the housing 5 is fixed to the bottom frame 2, and damping particles 6 are provided inside the housing 5. The main function of the particle damping vibration reduction device 4 is to reduce the vibration generated by the bottom frame 2 during equipment vibration, reduce the vibration transmitted to the main control room floor 7, and at the same time reduce the vibration generated by the floor 7 when the internal operators are moving around, effectively reducing the vibration of the bottom frame and the noise generated by the vibration.
[0029] As a preferred embodiment, the damping particles 6 are bearing steel particles with a diameter of 1mm to 6mm; the filling rate of the damping particles 6 within the shell 5 is 86% to 98%. In this embodiment, the diameter of the bearing steel particles is 2mm, and the filling rate is 90%. The vibration isolation base 1 uses a wire rope vibration damper to reduce the vibration transmitted from the trailer structure to the bottom frame 2 of the main control room. The main control room wall panels reduce the noise generated by the vibration of the outer shell by using rubber damping felt, reduce the transmission of noise to the interior of the main control room by using polyester fiber sound insulation cotton, and reduce low- and mid-frequency noise of specific frequencies by using noise-reducing metamaterials, thereby achieving a noise intensity of less than 60dB inside the main control room.
[0030] Example 4 provides a main control room, further optimized from Example 2. Unlike Example 3, in this example, the vibration isolation base 1 uses a spring damper to reduce the vibration transmitted from the trailer structure to the bottom frame 2 of the main control room. The bottom frame 2 of the main control room is a steel frame structure, with particle damping vibration reduction devices installed around the sides of the steel frame. The internal damping particles 6 are 4mm diameter bearing steel particles with a filling rate of 94%. The shell 5 is made of alloy steel, has a rectangular structure, and is connected to the steel frame by welding.
[0031] The main control room's ceiling and wall panels comprise a steel outer shell, composite material damping felt, sound-insulating rock wool, interior panels 11, and a noise-reducing metamaterial structure. The composite material damping felt 8 is adhesively bonded to the steel outer shell, the sound-insulating rock wool is bonded to the composite material damping felt, and the noise-reducing metamaterial is bonded to the interior panels. The main control room's ceiling and wall panels utilize the composite material damping felt to reduce noise generated by the outer shell's vibration, the sound-insulating rock wool to reduce noise transmission into the main control room, and the noise-reducing metamaterial to reduce low-to-mid-frequency noise at specific frequencies, thereby achieving a noise level below 60 dB inside the main control room.
[0032] Example 5 describes a main control room, which is a further optimization of Example 2. Unlike Examples 3 and 4, in this example, the vibration isolation base 1 is a rubber vibration damping pad, used to reduce the vibration transmitted from the trailer structure to the bottom frame 2 of the main control room. The bottom frame 2 of the main control room is a steel frame structure, with particle damping vibration damping devices installed around the sides of the steel profile. The internal damping particles 6 are 5mm diameter bearing steel particles with a filling rate of 97%. The shell is made of alloy steel and has an irregular shape that wraps around the steel profile, connected to the steel profile by bolts.
[0033] The main control room's ceiling and wall panels comprise a steel outer shell, metal-constrained damping felt, PU foam sound insulation cotton, interior trim panels, and a noise-reducing metamaterial structure. The metal-constrained damping felt is magnetically attached to the steel outer shell, while the PU foam sound insulation cotton is powder-coated and adhered to it. The noise-reducing metamaterial structure and interior trim panels are bonded together. The main control room's ceiling and wall panels utilize the metal-constrained damping felt to reduce noise generated by the outer shell's vibration, the PU foam sound insulation cotton to reduce noise transmission into the main control room, and the noise-reducing metamaterial to reduce low-to-mid-frequency noise at specific frequencies, thereby achieving a noise level below 60 dB within the main control room.
[0034] Example 6: A tunneling machine employs the main control room described in Examples 3, 4, or 5. This main control room is connected to a corresponding trailer via a vibration-damping base 1. The main control room is typically mounted on the equipment trailer, with the bottom of the main control room connected to the trailer via the vibration-damping base 1. This reduces the transmission of trailer vibrations to the main control room. The vibration-damping base 1 has a vibration-damping function and its structure can be in the form of spring vibration dampers, rubber vibration damping pads, or wire rope vibration dampers, preventing the main control room from vibrating violently when the trailer experiences severe vibrations. The trailer and the vibration-damping base 1 can be connected by welding, bolting, or riveting to fix the vibration-damping base 1 on the trailer and prevent it from moving. Through the above design, this invention effectively reduces the vibration of the main control room, reducing hardware failures in the control computer caused by vibration. Furthermore, this invention effectively reduces the transmission of noise generated during cutterhead tunneling to the main control room, improving the working environment inside the main control room.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A main control room, characterized in that: The noise reduction main control room body (20) includes a bottom frame (2) and an upper chamber structure. The bottom frame (2) is provided with a vibration isolation base (1) at the bottom and a vibration damping mechanism (4) is installed inside the bottom frame (2). The upper chamber structure is composed of several acoustic metamaterial composite structural plates.
2. The main control room according to claim 1, characterized in that: The upper chamber structure includes a bottom plate (7), a top plate (31), and a wall plate (3). Both the top plate (31) and the wall plate (3) are acoustic metamaterial composite structural plates.
3. The main control room according to claim 2, characterized in that: The acoustic metamaterial composite structure panel includes a wall panel frame (16) and an interior panel (11) and an outer shell (10) installed on the inner and outer sides of the wall panel frame (16). A sound insulation and noise reduction layer and a noise reduction acoustic metamaterial structure are provided between the outer shell (10) and the interior panel (11).
4. The main control room according to claim 3, characterized in that: The noise reduction metamaterial structure includes a lightweight frame (13) set in the interior panel (11), an acoustic diaphragm (14) on the lightweight frame (13), and a tuning mass block (15) on the acoustic diaphragm (14).
5. The main control room according to claim 3 or 4, characterized in that: The sound insulation and noise reduction layer includes damping felt (8) and sound insulation cotton (9). The damping felt (8) is fixed on the inner surface of the outer shell (10), and the sound insulation cotton (9) is pasted on the damping felt (8).
6. The main control room according to claim 5, characterized in that: The outer shell (10) is fixed on the wall panel frame (16), and the interior panel (11) is installed on the wall panel frame (16) by means of a buckle; the inner wall of the outer shell (10) is provided with a particle damping vibration reduction device (41), which is located between the outer shell (10) and the damping felt (8).
7. The main control room according to any one of claims 1 to 4, 6, characterized in that: The vibration damping mechanism (4) is a particle damping vibration damping device (41). The particle damping vibration damping device (41) includes a housing (5), which is fixed on the bottom frame (2). Damping particles (6) are provided inside the housing (5).
8. The main control room according to claim 7, characterized in that: The damping particles (6) are bearing steel particles with a diameter of 1 mm to 6 mm; the filling rate of the damping particles (6) in the shell (5) is 86% to 98%.
9. The main control room according to claim 1 or 8, characterized in that: The vibration isolation base (1) is a spring damper, a rubber damping pad, or a wire rope damper.
10. A tunneling machine, characterized in that: The main control room described in any one of claims 1 to 9 is connected to the corresponding trailer via a vibration isolation base (1).