A noise reduction system for concrete precast

Abstract

This invention relates to the field of precast component production technology, and more particularly to a noise reduction system for precast concrete component processing. The system includes a ground track, a retaining wall, an outer soundproof enclosure, an inner soundproof cover, and noise monitoring equipment. Three parallel ground tracks are spaced along the ground. The outer soundproof enclosure is movable and mounted on the ground tracks. The outer soundproof enclosure has a clearance opening for avoiding the precast component fixing mold. A soundproof baffle is movable and mounted at the clearance opening in the vertical direction. When the soundproof baffle moves downwards to the ground, it closes the clearance opening and cooperates with the retaining wall in the front-back direction. The inner soundproof cover is movable and mounted inside the outer soundproof enclosure in the vertical direction. During its downward movement, the inner soundproof cover covers the precast component fixing mold, forming a soundproof cavity between the inner soundproof cover and the outer soundproof enclosure when it is lowered to the ground. Four noise monitoring devices are installed around the precast component fixing mold and outside the outer soundproof enclosure. This invention provides excellent sound insulation and noise reduction, protecting the health of workers.

Description

Technical Field

[0001] This invention relates to the field of precast component production technology, and in particular to a noise reduction system for processing precast concrete components. Background Technology

[0002] Precast concrete components are used in construction, transportation, water conservancy, and other fields. Compared with cast-in-place concrete, factory-produced precast concrete components have many advantages: 1. For construction workers, the relatively stable working environment in the factory is safer than the complex on-site work; 2. The quality and process of building components can be better controlled through mechanized production; 3. The standardization of the size and characteristics of precast components can significantly speed up installation and construction progress; 4. Compared with traditional on-site molding, molds in the factory can be reused, resulting in lower overall costs; 5. Mechanized production requires less manpower, and as labor costs continue to rise, the cost advantage of large-scale precast components will become increasingly apparent; 6. The amount of on-site work on construction sites using precast components is significantly reduced, resulting in a significant reduction in dust and noise pollution.

[0003] Currently, precast components are commonly produced using fixed molds. During the production of precast concrete components, concrete is poured into a mold, which is then moved to a workbench equipped with a vibrating motor (i.e., a vibrating table) for vibration and degassing to remove air bubbles from the concrete. The vibrating table consists of multiple support devices beneath the mold, with the vibration unit positioned in the center of these support devices. The vibrating table drive unit propels the mold in motion. After vibration, the drive unit transports the mold to the next workstation. The drive unit is powered by a drive motor. During the production of precast concrete components, the vibrating motor and drive motor generate significant noise during normal operation. Prolonged exposure to this noise environment is detrimental to the health of workers. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a noise reduction system for the processing of precast concrete components, so as to solve the technical problem that the processing of precast concrete components is noisy and affects the health of workers.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A noise reduction system for precast concrete component processing includes:

[0007] The ground rails are arranged in three parallel lines on the ground, with the left and right rails located on the left and right sides of the precast component fixing mold table, respectively.

[0008] The retaining wall extends in the left and right direction, is set at the front end of the ground rail and is located outside the precast component fixing mold table;

[0009] The external soundproof room is slidably assembled on the ground tracks in the front-to-back direction. The external soundproof room is provided with a clearance opening for avoiding the fixing mold table of the prefabricated component. A soundproof baffle is installed at the clearance opening in the up-down direction. The height of the soundproof baffle is greater than the height of the clearance opening. When the soundproof baffle moves down to the ground, it closes the clearance opening and cooperates with the retaining wall in the front-to-back direction to block.

[0010] The inner soundproof cover moves vertically and is assembled inside the outer soundproof room. As the inner soundproof cover moves downward, it can cover the outside of the prefabricated component fixing mold. When the inner soundproof cover is lowered to the ground, a soundproof cavity is formed between the inner soundproof cover and the outer soundproof room.

[0011] Four noise monitoring devices are provided, which are respectively installed around the precast component fixing mold platform and located on the outside of the external soundproof room.

[0012] Furthermore, the external soundproof room includes a left soundproof panel, a right soundproof panel, a front soundproof panel, a rear soundproof panel, and a top soundproof panel. The bottom of the left, right, and rear soundproof panels is rotatably equipped with pulleys that slide in cooperation with the corresponding side ground rails. One of the pulleys on the left, right, and rear soundproof panels is driven by a drive motor. A transparent observation window is provided on the front soundproof panel.

[0013] Furthermore, the sound insulation baffle is slidably engaged with the front sound insulation panel in the vertical direction and is anti-detached in the front-back direction. The left and right ends of the sound insulation baffle are respectively guided and engaged with the left and right sound insulation panels in the vertical direction.

[0014] Furthermore, the front sound insulation panel is provided with a T-shaped protrusion, the sound insulation baffle is provided with a T-shaped groove that cooperates with the T-shaped protrusion, the left and right sound insulation panels are provided with protrusions extending in the vertical direction on opposite sides, and the sound insulation baffle is provided with sliding grooves that cooperate with each protrusion.

[0015] Furthermore, the soundproof baffle and the inner soundproof cover share a set of lifting equipment.

[0016] Furthermore, a suspension plate and guide wheels are suspended from the top soundproof panel. The lifting device includes a drive motor, an adjustment assembly, a transmission assembly, a first winding roller, and a second winding roller mounted on the suspension plate. The transmission assembly includes a drive pulley, a first driven pulley, a second driven pulley, and a transmission belt. The first and second driven pulleys have the same structure and dimensions and are coaxially spaced. The output shaft of the drive motor is connected to the drive pulley to drive its rotation. The transmission belt is wound around the drive pulley and the first driven pulley, or around the drive pulley and the second driven pulley. Above; the first winding roller is coaxially connected to the axle of the first driven pulley to rotate together with the first driven pulley, and a first steel wire rope is wound on the first winding roller; the second winding roller is coaxially connected to the axle of the second driven pulley to rotate together with the second driven pulley, and a second steel wire rope is wound on the second winding roller; the end of the first steel wire rope is connected to the inner sound insulation cover, and the second steel wire rope passes around the guide wheel and is connected to the sound insulation baffle; the adjusting component is used to push the transmission belt to push the transmission belt from the first driven pulley to the second driven pulley, or to push the transmission belt from the second driven pulley to the first driven pulley.

[0017] Furthermore, the adjustment assembly includes a fixed plate, an adjustment block, an adjustment motor, an adjustment screw, and limit posts. Two limit posts are fixed on the adjustment block and are arranged axially at a distance from each other on the first driven pulley. The distance between the two limit posts is equal to the width of the transmission belt, and the transmission belt passes through the gap between the two limit posts. The adjustment screw is rotatably mounted on the fixed plate and threadedly connected to the adjustment block. The output shaft of the adjustment motor is drivenly connected to the adjustment screw to make the adjustment block reciprocate axially relative to the fixed plate on the first driven pulley.

[0018] Furthermore, guide rods extend around the inner soundproof cover, and guide grooves that slide and cooperate with the guide rods are provided on the left soundproof plate, right soundproof plate, rear soundproof plate and soundproof baffle.

[0019] Furthermore, the left sound insulation panel, right sound insulation panel, front sound insulation panel, rear sound insulation panel, top sound insulation panel, and sound insulation baffle are all formed by fiber sound-absorbing panel layer, foam sound insulation panel layer, and composite panel layer arranged sequentially from the inside to the outside.

[0020] Preferably, the noise monitoring device is a multi-functional sound level meter.

[0021] The beneficial effects of the above technical solution are:

[0022] The noise reduction system for precast concrete component processing of this invention employs an outer soundproof enclosure and an inner soundproof cover made of sound-absorbing and noise-reducing materials. During precast concrete component processing, the outer soundproof enclosure and inner soundproof cover are moved outside the precast component fixing mold. Alternatively, only the outer soundproof enclosure can be used, with the soundproof baffle lowered, forming a single noise-reducing and sound-absorbing cover. This reduces the transmission of noise generated during precast component fixing mold operation to the worker area, thus achieving noise reduction. Alternatively, only the inner soundproof cover can be used, lowered and placed outside the precast component fixing mold. Furthermore, both the outer and inner soundproof enclosures can be used simultaneously, with the inner soundproof cover placed outside the precast component fixing mold, and an outer soundproof enclosure located outside the inner soundproof cover, providing double sound insulation and ensuring worker safety. By using multiple multi-functional sound level meters, noise can be effectively monitored, the noise reduction effect can be assessed, and the appropriate outer soundproof enclosure and / or inner soundproof cover can be selected. Attached Figure Description

[0023] Figure 1 This is a front view of the noise reduction system for precast concrete component processing according to the present invention;

[0024] Figure 2 This is a top view of the internal structure of the noise reduction system for precast concrete component processing according to the present invention;

[0025] Figure 3 This is a schematic diagram of the lifting device structure in the noise reduction system for precast concrete component processing of the present invention;

[0026] Figure 4 yes Figure 3 A schematic diagram of the structure of the adjustment component;

[0027] Figure 5 This is a cross-sectional view of the materials used in the external soundproof room and soundproof baffle of the noise reduction system for precast concrete component processing of the present invention.

[0028] Reference numerals: 1-Ground rail, 2-Sill, 3-External soundproof room, 4-Precast component fixing mold platform, 5-Soundproof baffle, 6-Transparent observation window, 7-Inner soundproof cover, 8-Pulley, 9-Drive motor, 10-Left soundproof panel, 11-Right soundproof panel, 12-Front soundproof panel, 13-Rear soundproof panel, 14-Top soundproof panel, 15-T-shaped protrusion, 16-T-shaped groove, 17-Protrusion, 18-Slide groove, 19- - Suspension plate, 20- Drive motor, 21- Adjusting motor, 22- First winding roller, 23- Second winding roller, 24- First wire rope, 25- Second wire rope, 26- Driving pulley, 27- First driven pulley, 28- Second driven pulley, 29- Limiting post, 30- Adjusting screw, 31- Adjusting block, 32- Fixing plate, 33- Long hole, 34- Noise monitoring equipment, 35- Drive belt, 38- Guide rod, 39- Composite board layer, 40- Foam sound insulation board layer, 41- Fiber sound absorption board layer. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Specific embodiments of the noise reduction system for precast concrete component processing of the present invention:

[0031] like Figure 1 and Figure 2 As shown, the noise reduction system for precast concrete component processing includes a ground track 1, a retaining wall 2, an external soundproof room 3, an internal soundproof enclosure 7, and noise monitoring equipment 34.

[0032] The ground rails 1 are arranged in three parallel sections along the ground, with the left and right rails positioned on the left and right sides of the precast component fixing mold platform 4, respectively. The retaining sills 2 extend in the left-right direction, positioned at the front end of each ground rail 1 and on the outside of the precast component fixing mold platform 4.

[0033] The external soundproof room 3 includes a left soundproof panel 10, a right soundproof panel 11, a front soundproof panel 12, a rear soundproof panel 13, and a top soundproof panel 14. The bottom of the left soundproof panel 10, the right soundproof panel 11, and the rear soundproof panel 13 are rotatably fitted with pulleys 8 that slide with the ground rails 1 on the left, right, and middle positions, respectively. The pulley on the left is connected to a drive motor 9. When the drive motor 9 is turned on, the external soundproof room 3 can move forward or backward relative to the ground rails.

[0034] A transparent observation window is provided on the front soundproof panel 12 so that workers can observe the operation of the precast component fixing mold 4 through the window. A clearance is formed between the front soundproof panel 12 and the ground, preventing interference with the precast component fixing mold 4 when the outer soundproof room 3 moves back and forth. A soundproof baffle 5 is slidably mounted on the rear side of the front soundproof panel 12 in the vertical direction; the height of the soundproof baffle is greater than the height of the clearance. Figure 2 As shown, the front sound insulation panel 12 has a T-shaped protrusion 15, and the sound insulation baffle 5 has a T-shaped groove 16 that mates with the T-shaped protrusion 15, enabling the front sound insulation panel 12 and the sound insulation baffle 5 to be anti-detached in the front-rear direction. The left sound insulation panel 10 and the right sound insulation panel 11 have protrusions 17 extending vertically on their opposite sides, and the sound insulation baffle 5 has grooves 18 that guide and mate with each protrusion. When the sound insulation baffle 12 moves downwards to the ground, it can close the clearance opening and provide a blocking engagement with the retaining wall 2 in the front-rear direction. The gap between the sound insulation baffle 12 and the front sound insulation panel 12 is small, and this gap is filled with sound-absorbing cotton material.

[0035] The inner soundproof cover 7 moves vertically and is assembled inside the outer soundproof room. During the downward movement, the inner soundproof cover 7 can cover the outside of the prefabricated fixed mold platform 4. When the inner soundproof cover 7 is lowered to the ground, a soundproof cavity is formed between the inner soundproof cover 7 and the outer soundproof room 3.

[0036] In this embodiment, the inner soundproof cover 7 and the soundproof baffle 5 share a set of lifting equipment to achieve the lifting of both.

[0037] like Figure 3 and Figure 4 As shown, a suspension plate 19 and guide wheels are suspended from the top soundproof plate 14. The lifting device includes a drive motor 20, an adjustment assembly, a transmission assembly, a first winding roller 22, and a second winding roller 23 mounted on the suspension plate 19. The transmission assembly includes a drive pulley 26, a first driven pulley 27, a second driven pulley 28, and a transmission belt 35. The first driven pulley 27 and the second driven pulley 28 have the same structure and dimensions and are arranged coaxially with a small gap, less than the width of the transmission belt 35. The axial length of the drive pulley 26 is greater than the distance between the opposite ends of the first driven pulley 27 and the second driven pulley 28. The output shaft of the drive motor 20 is connected to the drive pulley 26 to drive its rotation. The transmission belt 35 is wound around the drive pulley 26 and the first driven pulley 27, or around the drive pulley 26 and the second driven pulley 28. The suspension plate 19 is provided with two pairs of support plates. The axle of the first driven pulley 27 is rotatably mounted on one pair of support plates, and the axle of the second driven pulley 28 is rotatably mounted on the other pair of support plates. The first winding roller 22 is coaxially connected to the axle of the first driven pulley 27 to rotate together with the first driven pulley 27, and a first steel wire rope 24 is wound on the first winding roller 22. The second winding roller 23 is coaxially connected to the axle of the second driven pulley 28 to rotate together with the second driven pulley 28, and a second steel wire rope 25 is wound on the second winding roller 23. The end of the first steel wire rope 24 is connected to the inner soundproof cover 7, and the second steel wire rope 25 passes around the guide wheel and is connected to the soundproof baffle 5.

[0038] like Figure 3 and Figure 4As shown, the adjustment assembly includes a fixed plate 32, an adjustment block 31, an adjustment motor 21, an adjustment screw 30, and limiting posts 29. Two limiting posts 29 are fixed to the adjustment block 31 and are spaced apart axially along the first driven pulley 27. The distance between the two limiting posts 29 is equal to the width of the transmission belt 35, which passes through the gap between the two limiting posts 29. The fixed plate 32 is an L-shaped plate, including a horizontal section and a vertical section. The horizontal section has a groove for sliding engagement with the adjustment block 31. The adjustment block 31 has an elongated hole 33 extending axially along the axle of the first driven pulley 27, penetrating the adjustment block 31. The adjustment screw 30 is rotatably mounted on the vertical section and threadedly connected to the adjustment block 31, extending into the elongated hole 33. The output shaft of the adjusting motor 21 is connected to the adjusting screw 30 to make the adjusting block 31 reciprocate axially relative to the fixed plate 32 of the first driven pulley 27. Then, the transmission belt 35 can be pushed from the first driven pulley 27 to the second driven pulley 28, or from the second driven pulley 28 to the first driven pulley 27, through the limiting post 29.

[0039] In use, when the drive belt 35 is wound around the driving pulley 26 and the first driven pulley 27, turning on the drive motor allows the soundproof baffle to be raised or lowered, thus forming a large soundproof cover over the prefabricated component fixing mold 40 by the outer soundproof room and the soundproof baffle. When the adjusting motor 21 is turned on, the adjusting screw 30 drives the adjusting block 31 to move, pushing the drive belt 35 from the first driven pulley 27 to the second driven pulley 28 through the limiting post 29. At this time, turning on the drive motor 20 again allows the inner soundproof cover 7 to be raised or lowered.

[0040] Guide rods 38 extend from all four sides of the inner soundproof enclosure 7. Guide grooves, which slide and cooperate with the guide rods 38, are provided on the left soundproof panel 10, right soundproof panel 11, rear soundproof panel 13, and soundproof baffle 5, improving the stability of the inner soundproof enclosure 7 when it moves upward or downward. The initial height of the bottom of the inner soundproof enclosure 7 is not lower than the initial height of the bottom of the soundproof baffle 5, so that when only the outer soundproof room 3 is used, the inner soundproof enclosure 7 does not interfere with the prefabricated fixing mold 4.

[0041] In this embodiment, as Figure 5 As shown, the left sound insulation panel, right sound insulation panel, front sound insulation panel, rear sound insulation panel, top sound insulation panel and sound insulation baffle are all formed by fiber sound-absorbing board layer 41, foam sound insulation board layer 40 and composite board layer arranged sequentially from the inside to the outside, which has a good sound insulation and noise reduction effect while ensuring strength.

[0042] Four noise monitoring devices 34 are provided, respectively arranged at a distance of 10m and a height of 1.6m around the precast component fixing mold platform. In this embodiment, the noise monitoring devices adopt multi-functional sound level meters commonly used in the prior art, and the monitored noise decibel value is obtained based on the average of the average equivalent sound level of the four multi-functional sound level meters.

[0043] The noise reduction system for precast concrete component processing of this invention employs an outer soundproof chamber and an inner soundproof cover made of sound-absorbing and noise-reducing materials. During the processing of precast concrete components, the outer soundproof chamber and the inner soundproof cover are moved outside the precast component fixing mold. Alternatively, only the outer soundproof chamber can be used, in which case the soundproof baffle is lowered, so that the outer soundproof chamber and the soundproof baffle together form a noise-reducing and sound-absorbing cover, which can reduce the transmission of noise generated when the precast component fixing mold is working to the worker area, thereby achieving a noise reduction effect. Alternatively, only the inner soundproof cover can be used, with the inner soundproof cover lowered and placed outside the precast component fixing mold. Or, the outer soundproof chamber and the inner soundproof cover can be used simultaneously, in which case the inner soundproof cover is placed outside the precast component fixing mold, and an outer soundproof chamber is also set outside the inner soundproof cover, achieving a double sound insulation effect, thereby ensuring the safety of workers.

[0044] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A noise reduction system for processing precast concrete components, characterized in that, include: The ground rails are arranged in three parallel lines on the ground, with the left and right rails located on the left and right sides of the precast component fixing mold table, respectively. The retaining wall extends in the left and right direction, is set at the front end of the ground rail and is located outside the precast component fixing mold table; The external soundproof room is slidably assembled on the ground tracks in the front-to-back direction. The external soundproof room is provided with a clearance opening for avoiding the fixing mold table of the prefabricated component. A soundproof baffle is installed at the clearance opening in the up-down direction. The height of the soundproof baffle is greater than the height of the clearance opening. When the soundproof baffle moves down to the ground, it closes the clearance opening and cooperates with the retaining wall in the front-to-back direction to block. The inner soundproof cover moves vertically and is assembled inside the outer soundproof room. As the inner soundproof cover moves downward, it can cover the outside of the prefabricated component fixing mold. When the inner soundproof cover is lowered to the ground, a soundproof cavity is formed between the inner soundproof cover and the outer soundproof room. Four noise monitoring devices are provided, which are respectively installed around the precast component fixing mold platform and located on the outside of the external soundproof room; The external soundproof room includes a left soundproof panel, a right soundproof panel, a front soundproof panel, a rear soundproof panel, and a top soundproof panel. The bottom of the left, right, and rear soundproof panels is rotatably equipped with pulleys that slide in cooperation with the corresponding side ground rails. One of the pulleys on the left, right, and rear soundproof panels is connected to a drive motor. A transparent observation window is provided on the front soundproof panel. The sound insulation baffle slides in the vertical direction and is anti-detached in the front and back directions. The left and right ends of the sound insulation baffle are respectively guided in the vertical direction to the left and right sound insulation panels. The front sound insulation panel is provided with a T-shaped protrusion, and the sound insulation baffle is provided with a T-shaped groove that cooperates with the T-shaped protrusion. The left and right sound insulation panels are provided with protrusions extending in the vertical direction on their opposite sides, and the sound insulation baffle is provided with sliding grooves that cooperate with each protrusion. The soundproof baffle and the inner soundproof cover share a set of lifting equipment; A suspension plate and guide wheels are suspended on the top soundproof plate. The lifting device includes a drive motor, an adjustment component, a transmission component, a first winding roller and a second winding roller mounted on the suspension plate. The transmission component includes a drive pulley, a first driven pulley, a second driven pulley and a transmission belt. The first driven pulley and the second driven pulley have the same structure and size and are arranged coaxially and spaced apart. The output shaft of the drive motor is connected to the drive pulley to drive the drive pulley to rotate. The drive belt is wound around the driving pulley and the first driven pulley, or around the driving pulley and the second driven pulley; the first winding roller is coaxially connected to the axle of the first driven pulley to rotate together with the first driven pulley, and a first steel wire rope is wound on the first winding roller; the second winding roller is coaxially connected to the axle of the second driven pulley to rotate together with the second driven pulley, and a second steel wire rope is wound on the second winding roller; the end of the first steel wire rope is connected to the inner sound insulation cover, and the second steel wire rope passes around the guide wheel and is connected to the sound insulation baffle; the adjusting assembly is used to push the drive belt to move the drive belt from the first driven pulley to the second driven pulley, or to move the drive belt from the second driven pulley to the first driven pulley.

2. The noise reduction system for precast concrete component processing according to claim 1, characterized in that, The adjustment assembly includes a fixed plate, an adjustment block, an adjustment motor, an adjustment screw, and limit posts. Two limit posts are fixed on the adjustment block and are arranged axially at a distance from each other on the first driven pulley. The distance between the two limit posts is equal to the width of the transmission belt, and the transmission belt passes through the gap between the two limit posts. The adjustment screw is rotatably mounted on the fixed plate and threadedly connected to the adjustment block. The output shaft of the adjustment motor is driven by the adjustment screw to make the adjustment block reciprocate axially relative to the fixed plate on the first driven pulley.

3. The noise reduction system for precast concrete component processing according to claim 1, characterized in that, Guide rods extend from all four sides of the inner soundproof cover, and guide grooves that slide and cooperate with the guide rods are provided on the left soundproof plate, right soundproof plate, rear soundproof plate and soundproof baffle.

4. The noise reduction system for precast concrete component processing according to claim 1, characterized in that, The left sound insulation panel, right sound insulation panel, front sound insulation panel, rear sound insulation panel, top sound insulation panel and sound insulation baffle are all formed by fiber sound-absorbing panel layer, foam sound insulation panel layer and composite panel layer arranged from the inside to the outside.

5. The noise reduction system for precast concrete component processing according to claim 1, characterized in that, The noise monitoring device is a multi-functional sound level meter.

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