A convex block protection tool for cement-based sound barrier porous panel pouring

Abstract

The utility model relates to concrete sound barrier processing equipment technical field especially a kind of convex block protection tool for cement-based sound barrier porous panel pouring, including composite pressing plate and support, wherein the composite pressing plate is fixedly arranged at the connecting crossbar bottom surface of the support, the position of the composite pressing plate corresponds with the position of the sound-absorbing convex block, the bottom surface area of the composite pressing plate is not less than the top surface area of the sound-absorbing convex block, the composite pressing plate has elastic compression amount.The utility model has the advantages that: through simple novel structure design and the selection of low elastic modulus elastic compression strip, both the smooth pouring of slurry along the gap between composite pressing plate single board and the full protection of all sound-absorbing convex block surfaces from slurry contamination can be realized, and it is convenient to disassemble, low in cost, and can be widely used in the production of high-quality cement-based sound barrier.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete sound barrier processing equipment, and in particular to a protrusion protection tool for casting porous panels of cement-based sound barriers. Background Technology

[0002] With the development of urbanization and the increasing density of transportation networks, noise pollution along highways, railways, and subways is becoming increasingly prominent. Sound barriers are the most effective way to solve this problem. Sound barriers can be divided into two main categories: metal sound barriers and non-metal sound barriers. Cement-based sound barriers are the main type of non-metallic sound barriers, characterized by simple manufacturing processes, good durability, and maintenance-free integrated casting. They are currently a research hotspot for new sound barrier materials.

[0003] Cement-based sound barriers typically have panels with dozens or even hundreds of sound-absorbing holes, with an open area ratio as high as 30-40%. Their fabrication generally involves using a base plate with sound-absorbing protrusions as a mold, followed by processes such as slurry pouring, placement of sound-absorbing core material (such as ultra-fine glass wool), secondary pouring, and curing. However, during the pouring process, the slurry inevitably adheres to or covers the surface of the sound-absorbing protrusions, thus completely or partially blocking the sound-absorbing holes after curing, significantly reducing the sound absorption efficiency of the sound barrier. Although scrapers are currently used to remove the slurry from the protrusions, the differences in height between the protrusions and the presence of release oil on the protrusion surfaces make the process complex, time-consuming, and ineffective. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a protrusion protection fixture for casting porous panels of cement-based sound barriers. The fixture provides comprehensive protection for the sound-absorbing protrusions inside the cement-based sound barrier panel mold through the structural design of the composite pressure plate.

[0005] The objective of this utility model is achieved through the following technical solution: A protrusion protection fixture for casting porous panels of cement-based sound barriers, used to protect sound-absorbing protrusions set inside the mold of cement-based sound barrier panels, characterized in that: it includes a composite pressure plate and a bracket, wherein the composite pressure plate is fixedly set on the bottom surface of the connecting crossbar of the bracket, the position of the composite pressure plate corresponds to the position of the sound-absorbing protrusion, the bottom surface area of ​​the composite pressure plate is not less than the top surface area of ​​the sound-absorbing protrusion, and the composite pressure plate has an elastic compression amount.

[0006] The composite pressure plate includes a substrate, an adhesive layer, and an elastic pressure strip, wherein the substrate is fixedly connected to the connecting crossbar, and the elastic pressure strip is glued to the bottom surface of the substrate through the adhesive layer, and the elastic compression is provided by the elastic pressure strip.

[0007] The adhesive layer is made of one of the following adhesive systems: epoxy resin, polyurethane, acrylic resin, or silicone.

[0008] The elastic strip is made of one of the following: rubber, silicone, elastic polyurethane, or thermoplastic elastomer, with an elastic modulus of 0.1-10 MPa.

[0009] The composite pressure plate is a long strip with a three-layer structure. The substrate is on top, the adhesive layer is in the middle, and the elastic pressure strip is on the bottom. The flatness of the substrate in the horizontal direction of its long side does not exceed 0.5mm, and its thickness is not less than 10mm. The thickness of the elastic pressure strip is 3-5mm, and its deformation under tooling pressure is not less than 2mm, and it can return to its initial shape after the pressure is released. The substrate, adhesive layer, and elastic pressure strip have the same width, and are 2-3mm larger than the upper surface dimension of the sound-absorbing protrusion of the mold.

[0010] The bracket consists of a connecting horizontal bar, a supporting vertical bar, and a fixing plate. The supporting vertical bar is provided at both ends of the connecting horizontal bar. The connecting horizontal bar is located at the bottom end of the supporting vertical bar. The fixing plate is provided at the top end of the supporting vertical bar and extends outward. The fixing plate is used for fixed connection between the bracket and the cement-based sound barrier panel mold.

[0011] The function of the connecting crossbar is to assemble multiple single plates of the composite pressure plate into a whole according to a specific shape. The function of the supporting vertical bar is to connect the connecting crossbar to the fixed plate, and further connect it to the mold side fixed plate through fixing bolts. At the same time, the bolt tightening force is transmitted to the connecting crossbar and the composite pressure plate, thereby realizing the deformation of the elastic pressure strip.

[0012] The connection between the base plate and the connecting crossbar, the connecting crossbar and the supporting vertical bar, and the supporting vertical bar and the fixing plate is by welding. The base plate and the fixing plate are preferably solid steel plates, while the connecting crossbar and the supporting vertical bar can be square steel.

[0013] A plurality of supports are arranged at intervals along the long side of the cement-based sound barrier panel mold, and a plurality of composite pressure plates are arranged at intervals between the supports in a fence-like manner along the short side of the cement-based sound barrier panel mold.

[0014] The fixing plate is detachably fixed to the cement-based sound barrier panel mold by fixing bolts. When the fixing plate is fixed to the cement-based sound barrier panel mold, the composite pressure plate is under pressure.

[0015] The height of the composite pressure plate, connecting crossbar, and supporting vertical bar must be at least 2mm greater than the height from the top surface of the mold protrusion to the top surface of the mold side fixing plate to ensure that sufficient pressure can be applied to the composite pressure plate through the fixing bolts.

[0016] The advantages of this utility model are: 1) The structural design, flatness design, and high-elasticity material of the composite pressure plate ensure that all protrusion surfaces within the single-panel area are fully protected. Sound barrier panel molds are characterized by their large length, typically 1960mm and 3960mm. The molds contain a large number of sound-absorbing protrusions (typically 120, 12 longitudinally and 10 laterally), evenly distributed, but with potentially inconsistent heights. Therefore, conventional methods struggle to achieve complete and uniform coverage of all sound-absorbing protrusions. This invention uses high-flatness steel to ensure uniform thickness and surface flatness of the composite pressure plate along its length. Simultaneously, high-elasticity rubber and other materials are used as elastic strips, ensuring a deformation of at least 2mm under pressure. This ensures that all protrusion surfaces are tightly covered by the elastic strips, preventing slurry contamination.

[0017] 2) While protecting the sound-absorbing protrusions from contamination, the composite pressure plate must also have sufficient channel space on the horizontal plane to allow the slurry to be poured smoothly from outside the mold. This utility model adopts a grid-type composite pressure plate layout. The size of the composite pressure plate only covers the surface of the sound-absorbing protrusions that need to be protected, leaving sufficient space between adjacent composite pressure plate sheets to facilitate slurry pouring.

[0018] 3) The composite pressure plate, connecting crossbar, supporting vertical bar, fixing plate and other components of this utility model are formed into a complete whole by welding. It is very convenient to install, disassemble and clean, and the cost is low. By adjusting the size and layout of the composite pressure plate, it can be applied to the sound absorption hole layout of various sound barrier panels, and has strong compatibility. Attached Figure Description

[0019] Figure 1 This is a top view schematic diagram of the sound barrier panel mold structure of this utility model; Figure 2 This is a top view of the protrusion protection fixture of this utility model. Figure 3 for Figure 2 Schematic diagram of the AA section structure; Figure 4 for Figure 2 Schematic diagram of the BB cross-section structure; Figure 5 This is a schematic diagram comparing the initial state and compressed state of the composite pressure plate in this utility model; Figure 6 This is a schematic diagram of the matching structure between the right-side structure and the mold in this utility model; Figure 7 This is a front view structural diagram of the bump protection tooling of this utility model. Detailed Implementation

[0020] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art: like Figure 1-7 As shown, each mark represents: composite pressure plate 1, connecting crossbar 2, supporting vertical bar 3, fixing plate 4, fixing bolt 5, cement-based sound barrier panel mold 6, substrate 11, adhesive layer 12, elastic pressure strip 13, left supporting vertical bar 31, right supporting vertical bar 32, left fixing plate 41, right fixing plate 42, round hole 43, left fixing bolt 51, right fixing bolt 52, mold base plate 61, mold left side plate 62, mold right side plate 63, mold left side fixing plate 64, mold right side fixing plate 65, sound-absorbing protrusion 66, round hole on side fixing plate 67.

[0021] Example: Figures 1 to 7 As shown, the soil block protection fixture used in this embodiment for casting porous panels of cement sound barriers is used to protect the surface of the sound-absorbing protrusions 66 of the cement-based sound barrier panel mold 6 from contamination by the casting slurry. The cement-based sound barrier panel mold 6 is 1960mm long, 50mm wide, and has a 3mm thick base plate 61 made of stainless steel. The base plate 61 has 120 sound-absorbing protrusions 66, with 12 protrusions 66 per row along the length and 10 protrusions 66 per row along the transverse direction. The distance between the upper surfaces of adjacent protrusions along the transverse direction is 27mm. The upper surface of each sound-absorbing protrusion 66 is 120mm long, 20mm wide, and 20mm high. The height from the upper surface of the sound-absorbing protrusion 66 to the upper surface of the mold side fixing plates (left mold fixing plate 64 and right mold fixing plate 65) is 120mm.

[0022] The bump protection fixture in this embodiment consists of a composite pressure plate 1, a connecting crossbar 2, a supporting vertical bar 3, a fixing plate 4, and fixing bolts 5. The composite pressure plate 1 comprises a base plate 11, an adhesive layer 12, and elastic pressure strips 13, totaling 10 pieces arranged at equal intervals in the horizontal direction. The base plate 11 is made of 304 stainless steel, with dimensions of 1900mm in length, 22mm in width, and 10mm in thickness. The adhesive layer 12 is made of epoxy resin, with dimensions of 1900mm in length, 22mm in width, and 0.2mm in thickness. The elastic pressure strips 13 are made of high-elasticity silicone rubber with an elastic modulus of 2.2MPa, and have dimensions of 1900mm in length, 22mm in width, and 10mm in thickness. The elastic pressure strips 13 are firmly bonded to the base plate 11 through the adhesive layer 12.

[0023] Furthermore, ten composite pressure plates 1 are arranged parallel to each other along their length, with a spacing of 24.8 mm between the plates. Connecting crossbars 2 consist of four crossbars perpendicular to the long side of the composite pressure plates 1, and are welded together with the ten composite pressure plates 1. The connecting crossbars 2 are made of square steel with a length of 490 mm and a cross-sectional side length of 50 mm, and are arranged at equal intervals in the horizontal direction. The outermost edge of the connecting crossbar 2 is 200 mm from the outer edge of the substrate 1 along its length. The connecting crossbars 2 are made of 304 stainless steel.

[0024] The supporting vertical rod 3 consists of eight vertical rods located at both ends of the four connecting horizontal rods 2, perpendicular to the connecting horizontal rods 2, and arranged in a vertical direction. It is used to transmit the tightening pressure of the fixing bolts 5. The supporting vertical rod 3 is made of 304 stainless steel, with a height of 72mm and a cross-sectional side length of 50mm, and is fixed to the connecting horizontal rods 2 by welding.

[0025] The fixing plate 4 is vertically connected to the supporting vertical rod 3 and extends horizontally outward to the outside of the cement-based sound barrier panel mold 6. It has a round hole 43, which is connected to the left fixing plate 64 and the right fixing plate 65 of the mold via fixing bolts 5. The fixing plate 4 is made of 304 stainless steel, and its length and width dimensions match the dimensions and positions of the left fixing plate 64 and the right fixing plate 65 of the mold. The dimensions and positions of its round hole 43 match the dimensions and positions of the round holes 67 on the side fixing plates of the left and right fixing plates of the mold, thus enabling the fixing bolts 5 to fix and tighten the tooling. Furthermore, the round holes on the left fixing plate 64 and the right fixing plate 65 of the mold can be provided with internal threads to match the threads of the fixing bolts 5, thereby achieving the fixation and tightening of the tooling.

[0026] The height and H1 of the composite pressure plate 1, the connecting crossbar 2 and the supporting vertical bar 3 are 123 mm, and the height from the top surface of the sound-absorbing protrusion 66 to the top surface of the mold side fixing plate is 120 mm, so as to ensure that sufficient pressure can be applied to the composite pressure plate 1 through the fixing bolt 5.

[0027] When this embodiment is applied: The cement-based sound barrier panel mold 6 is fixed horizontally on the operating table. The tooling is installed into the inner cavity of the mold and placed flat on the sound-absorbing protrusion 66, so that the elastic pressure strip 13 of the composite pressure plate 1 just presses against the upper surface of the sound-absorbing protrusion 66. At the same time, the round hole 43 on the 8-piece fixing plate 4 is aligned with the round hole 67 on the side fixing plate of the mold. The fixing bolt 5 is tightened to fix the tooling.

[0028] After the tooling is installed, a specific mass of slurry is poured into the mold 1 through the gaps in the composite pressure plate 1. Vibration is used to achieve compaction and dense filling of the slurry. After the slurry has initially set, the fixing bolts 5 are unscrewed, the tooling is removed, the residual slurry stains on the surface are cleaned, and it can be reused after air drying.

[0029] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A protrusion protection fixture for casting porous panels of cement-based sound barriers, used to protect the sound-absorbing protrusions set inside the mold of the cement-based sound barrier panel, characterized in that: It includes a composite pressure plate and a bracket, wherein the composite pressure plate is fixedly disposed on the bottom surface of the connecting crossbar of the bracket, the position of the composite pressure plate corresponds to the position of the sound-absorbing protrusion, the bottom surface area of ​​the composite pressure plate is not less than the top surface area of ​​the sound-absorbing protrusion, and the composite pressure plate has an elastic compression amount.

2. The protrusion protection fixture for casting porous panels of cement-based sound barriers according to claim 1, characterized in that: The composite pressure plate includes a substrate, an adhesive layer, and an elastic pressure strip, wherein the substrate is fixedly connected to the connecting crossbar, and the elastic pressure strip is glued to the bottom surface of the substrate through the adhesive layer, and the elastic compression is provided by the elastic pressure strip.

3. The protrusion protection fixture for casting porous panels of cement-based sound barriers according to claim 2, characterized in that: The adhesive layer is made of one of the following adhesive systems: epoxy resin, polyurethane, acrylic resin, or silicone.

4. The protrusion protection fixture for casting porous panels of cement-based sound barriers according to claim 2, characterized in that: The elastic pressure strip is made of one of the following: rubber, silicone, elastic polyurethane, or thermoplastic elastomer.

5. The protrusion protection fixture for casting porous panels of cement-based sound barriers according to claim 2, characterized in that: The flatness of the substrate in the horizontal direction of its long side shall not exceed 0.5 mm, and its thickness shall not be less than 10 mm. The thickness of the elastic strip shall be 3-5 mm, and its deformation under tooling pressure shall not be less than 2 mm.

6. The protrusion protection fixture for casting porous panels of cement-based sound barriers according to claim 1, characterized in that: The bracket consists of a connecting horizontal bar, a supporting vertical bar, and a fixing plate. The supporting vertical bar is provided at both ends of the connecting horizontal bar. The connecting horizontal bar is located at the bottom end of the supporting vertical bar. The fixing plate is provided at the top end of the supporting vertical bar and extends outward. The fixing plate is used for fixed connection between the bracket and the cement-based sound barrier panel mold.

7. The protrusion protection fixture for casting porous panels of cement-based sound barriers according to claim 6, characterized in that: A plurality of supports are arranged at intervals along the long side of the cement-based sound barrier panel mold, and a plurality of composite pressure plates are arranged at intervals between the supports in a fence-like manner along the short side of the cement-based sound barrier panel mold.

8. The protrusion protection fixture for casting porous panels of cement-based sound barriers according to claim 6, characterized in that: The fixing plate is detachably fixed to the cement-based sound barrier panel mold by fixing bolts. When the fixing plate is fixed to the cement-based sound barrier panel mold, the composite pressure plate is under pressure.

Images