Side wall plate, through channel applying side wall plate and preparation method of side wall plate

Abstract

The invention provides a side wall plate which comprises a substrate layer and elastic layers, the elastic layers are laid on the two sides of the substrate layer, a plurality of hemp holes are formed in the elastic layers, the hemp holes are evenly distributed in the elastic layers in an array mode, the substrate layer is embedded into the hemp holes in a vulcanization mode, and the vulcanization gluing area of the substrate layer and the elastic layers is increased through the hemp holes. The invention further provides a through channel. The through channel comprises the side wall plate, a rotating shaft assembly and a vehicle body profile. The invention further provides a preparation method for preparing the side wall plate. The preparation method comprises the following steps: step 1, putting raw materials into the lower mold; 2, auxiliary materials are laid on the raw materials; 3, vacuumizing is conducted after mold closing; 4, the temperature and the pressure are kept till vulcanization is completed; and 5, opening the mold, and taking out the side wall plate. According to the side wall plate manufactured through the manufacturing method, the original strength of the side wall plate is kept, meanwhile, the elasticity of the side wall plate is improved, the service life is prolonged, and the side wall plate can be suitable for a more complex driving environment.

Description

Technical Field

[0001] This invention relates to the technical field of the present invention, side wall panels, through channels using side wall panels, and methods for preparing side wall panels, and particularly to side wall panels, through channels using side wall panels, and methods for preparing side wall panels. Background Technology

[0002] As a key component of the tunnel, the sidewall panel's structure determines the tunnel's overall performance relative to the railcar, including sound insulation, heat insulation, and curve-crossing capability. Existing patent documents, such as patent number CN20150023195.1, disclose a composite material tunnel sidewall panel, specifically employing a high-strength glass fiber reinforced modified epoxy resin. Multiple layers of high-strength glass fiber are layered within the modified epoxy resin, thereby improving overall aging resistance and fatigue strength. However, the glass fiber used in this product is a rigid material, and its inherent properties lead to a decrease in the yield strength of the resulting sidewall panel. After disassembly, the sidewall assembly containing the sidewall panel is highly susceptible to reverse bending, with the projected angle between the two sides and the middle of the sidewall panel gradually increasing until the side breaks, posing a significant safety hazard.

[0003] Therefore, patent number CN202210390264.7 discloses a flexible sheet material, specifically formed by hot-pressing and vulcanizing an elastomer, a toughened core board, and a toughened face panel. The elastomer is disposed on both sides of the toughened core board. In application, due to the presence of the elastomer, the curved portions on both sides of the side panel have higher yield strength than the middle portion, allowing the side panel to withstand repeated curling applications. The toughened core board and toughened face panel are made of phenolic resin, which further enhances the hardness of the side panel and reduces the possibility of cracking. The elastomer and toughened core board are composited using a hot-pressing and vulcanizing process. The edges of the elastomer are vulcanized and fixed to the toughened core board. The contact area between the elastomer and the toughened core board determines the bonding strength between them. However, during the production of the side panel, moisture needs to be removed during vulcanization, resulting in limited contact only at the edges, thus limiting the vulcanized area and limiting the connection strength between the elastomer and the toughened core board. When the edges of the side wall panel are bent repeatedly, the hot-pressed vulcanized bond between the elastomer and the toughened core board is prone to tearing, that is, the elastomer board detaches from the toughened core board, which also makes the side wall panel and the through channel at risk of accidental disassembly. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the elastic plates on both sides of the existing through-channel sidewall panel are prone to detach from the toughened core plate, which poses a safety hazard.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a sidewall panel, comprising a matrix layer and an elastic layer, wherein the matrix layer is a layer of fiber layers made of resin material, and the elastic layer is made of nitrile rubber. The elastic layer is applied to both sides of the matrix layer, and the elastic layer has a plurality of pits, which are evenly arranged in an array on the elastic layer. The matrix layer is vulcanized and embedded in the pits of the elastic layer. The pits reduce the weight of the elastic layer and increase the vulcanization bonding area of ​​the matrix layer and the elastic layer.

[0006] Furthermore, the perforations are arranged in a matrix on the elastic layer, with a fixed interval between adjacent perforations, and the perforations penetrate the elastic layer.

[0007] Furthermore, a through passageway includes a side wall panel as described in any one of the above, a pivot assembly mounted on both sides of the side wall panel, and a vehicle body profile.

[0008] Furthermore, the pivot assembly includes a connector mounted on the elastic layer, a pivot mounting base mounted on the connector, and a pivot that is rotatably mounted on the pivot mounting base. The connector connects the pivot mounting base and the elastic layer, and the pivot mounting base is fixed to the connector.

[0009] Furthermore, the vehicle body profile has a bend structure, with one end of the vehicle body profile mounted on the vehicle body and the pivot mounted on the other end of the vehicle body profile.

[0010] Furthermore, a reset component is installed on the rotating shaft mounting base. The reset component has a reset elasticity and is fixedly connected to the rotating shaft mounting base and the rotating shaft respectively.

[0011] Furthermore, the reset component is a spring, and tension bases are installed at both ends of the reset component. The tension bases are respectively fixed on the rotating shaft mounting base and the rotating shaft, and the tension bases lock the reset component in place.

[0012] Furthermore, the connector includes a connecting rubber, a connecting profile fixed on the connecting rubber, and a rotating frame slidably installed in the connecting profile. The connecting rubber is adhered and fixed to the elastic layer, and the edge of the connecting rubber extends outward from the elastic layer and bends. A snap-fit ​​strip is also protruded from the inner rolled side of the connecting rubber. A snap-fit ​​groove is provided on the connecting profile, and the snap-fit ​​groove and the snap-fit ​​strip are fitted and positioned together. The rotating frame is slidably received in the cavity of the connecting profile, and the rotating frame extends outward through the connecting profile and connects to the rotating shaft mounting base.

[0013] Furthermore, the reset component includes a torsion bar mounting seat mounted on the pivot mounting seat, a torsion bar inserted into the torsion bar mounting seat, and a limiting ring sleeved on the torsion bar. The torsion bar mounting seats are respectively located on the upper and lower sides of the side wall panel corresponding to the pivot mounting seat. The torsion bar mounting seats are fixed to the end of the pivot. One end of the torsion bar is detachably inserted into the torsion bar mounting seat at one end of the side wall panel, and the other end of the torsion bar is detachably inserted into the vehicle body profile at the other end of the side wall panel. The limiting ring is sleeved at the intersection of the two torsion bars.

[0014] Furthermore, a process for preparing the aforementioned sidewall panel includes the following steps: Step 1: Place the raw material into the lower mold, first lay the phenolic resin prepreg fiber into the lower mold, and attach nitrile rubber layers on both sides. Holes are formed in the nitrile rubber layers, and the holes are evenly arranged on the nitrile rubber layers; Step 2: Lay auxiliary materials onto the raw material. A porous isolation membrane, a breathable cloth, and a vacuum bag membrane are sequentially laid on top of the nitrile rubber layers. The vacuum tube of the vacuum bag membrane extends through the upper mold; Step 3: After closing the mold, a vacuum is drawn, and the sidewall panel is pressurized and heated for vulcanization; Step 4: Maintain the temperature and pressure until vulcanization is complete, and discharge the vulcanization gas and moisture. The phenolic resin in the matrix layer can fill the pores in the nitrile rubber during condensation, and the gas and moisture generated during vulcanization can also be quickly discharged through the pores; Step 5: Open the mold and remove the sidewall panel.

[0015] The beneficial effects of the present invention are that, by using the above-mentioned sidewall panel, the perforations on the elastic layer can reduce the weight of the sidewall panel, while increasing the bonding area between the matrix layer and the elastic layer, improving the connection strength between the elastic layer and the matrix layer, and extending the service life of the sidewall panel. Furthermore, the through-channels of this sidewall panel result in a lighter weight and a longer service life, which can meet the requirements of long-term vehicle operation. In the manufacturing method of this sidewall panel, the perforations can provide a channel for removing impurities during the vacuum high-pressure and high-heat processing, thereby improving the manufacturing efficiency of the sidewall panel. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a perspective view of the side wall panel of the present invention;

[0018] Figure 2 This is a perspective view of one embodiment of the through passage of the side wall panel in this invention;

[0019] Figure 3 yes Figure 2 A three-dimensional view of the central tunnel section structure;

[0020] Figure 4 yes Figure 3A three-dimensional view of the middle section structure;

[0021] Figure 5 This is a perspective view of another embodiment of the through passageway using the side wall panel of the present invention;

[0022] Figure 6 yes Figure 5 Top view of the central tunnel section structure;

[0023] Figure 7 yes Figure 5 A three-dimensional view of the central tunnel section structure;

[0024] Figure 8 This is a flowchart of the preparation method of the side wall panel of the present invention;

[0025] Figure 9 This is a mold-closing schematic diagram of the preparation method of the side wall panel of the present invention;

[0026] Figure 10 yes Figure 9 A magnified view of a section at point A in the middle;

[0027] Figure 11 This is a schematic diagram of the mold-closing process for bending the sheet material in the preparation method of the side wall panel of the present invention;

[0028] In the figure: side wall panel 10, matrix layer 110, elastic layer 120, pitted surface 121, pivot assembly 20, vehicle body profile 30, connector 210, pivot mounting base 220, pivot 230, reset component 240, tension base 241, connecting rubber 211, connecting profile 212, wheel frame 213, snap-fit ​​strip 214, snap-fit ​​groove 215, torsion bar mounting base 244, torsion bar 242, limit ring 243. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0030] like Figure 1As shown, the present invention provides a sidewall panel 10, which is generally flat. The two sides of the sidewall panel 10 are slightly curved inwards. Specifically, the sidewall panel 10 includes a matrix layer 110 and an elastic layer 120. The matrix layer 110 is a layer of fibers made of resin material and stacked together. The elastic layer 120 is made of nitrile rubber and is applied to both sides of the matrix layer 110. A plurality of perforations 121 are formed on the elastic layer 120. The perforations 121 are evenly arrayed on the elastic layer 120, preferably in a matrix arrangement. All perforations 121 penetrate the elastic layer 120. The perforations 121 reduce the weight of the elastic layer 120, thereby reducing the overall mass of the sidewall panel 10 and achieving lightweighting of the through-channel. During the vulcanization bonding of the matrix layer 110 and the elastic layer 120, the matrix layer 110 is vulcanized and embedded into the pits 121 of the elastic layer 120. The pits 121 increase the vulcanization bonding area, improve the bonding strength between the elastic layer 120 and the matrix layer 110, and thus enhance the overall elasticity of the side wall panel 10 to adapt to greater curved driving conditions.

[0031] like Figures 2 to 7 As shown, the present invention also provides a through passage using a side wall panel, including the aforementioned side wall panel 10, a pivot assembly 20 installed on both sides of the side wall panel 10, and a vehicle body profile 30.

[0032] like Figure 2 and Figure 5 As shown, the pivot assembly 20 includes a connector 210 mounted on the elastic layer 120, a pivot mounting base 220 mounted on the connector 210, and a pivot 230 mounted on the pivot mounting base 220 that is rotatable relative to it.

[0033] The connector 210 connects the pivot mounting base 220 and the elastic layer 120. Specifically, a portion of the connector 210 is fixed parallel to the elastic layer 120. The edge curvature angle of the connector 210 is smaller than the curvature angle of the side wall plate 10, and the side of the side wall plate 10 is wrapped around the connector 210. One side of the pivot mounting base 220 is fixed to the connector 210, and the other side of the pivot mounting base 220 extends towards the vehicle body. The pivot 230 is slidably mounted on the pivot mounting base 220, and the pivot mounting base 220 can also rotate relative to the pivot 230. A reset member 240 is also mounted on the pivot mounting base 220. The reset member 240 has a reset elasticity and is fixedly connected between the pivot mounting base 220 and the pivot 230. The reset member 240 keeps the pivot mounting base 220 rotating to a fixed angle relative to the pivot 230.

[0034] The vehicle body profile 30 has a bend structure. One end of the vehicle body profile 30 is installed on the vehicle body, and the other end of the vehicle body profile 30 is fixedly sleeved on the pivot 230. When the vehicle body passes through bumpy and turning road conditions, the two sides of the side wall panel 10 extend and retract relative to the pivot 230 respectively. Then, under the action of the reset member 240, the side wall panel 10 is reset and rotated to the starting position.

[0035] In the aforementioned through-passage, the use of an elastic layer 120 with perforations 121 increases the bonding area between the matrix layer 110 and the elastic layer 120, improves the connection strength between the elastic layer 120 and the matrix layer 110, and enhances the overall fatigue strength of the through-passage. The presence of perforations 121 also reduces the volume of the elastic layer 120, thereby reducing the overall weight of the through-passage. During train operation, the through-passage expands and contracts. The edge of the side wall panel 10 drives the rotating shaft mounting seat 220 and the rotating shaft 230 to rotate relative to the car body profile 30 via the connector 210. When the rotating shaft 230 rotates, it provides elastic potential energy to the reset component 240. When the through-passage side wall panel 10 needs to be reset, the reset component 240 provides a reset elastic force to the side wall panel 10.

[0036] Example 1

[0037] like Figures 2 to 4 As shown, in one embodiment, the rotating shaft assembly 20 has at least two rotating shaft mounting seats 220, and the reset member 240 is selected as a spring. Tension bases 241 are respectively installed at both ends of the reset member 240. The tension bases 241 are respectively fixed on the rotating shaft mounting seat 220 and the rotating shaft 230. The tension bases 241 lock the reset member 240 to avoid excessive stretching loss of elastic potential energy. The rotating shaft mounting seat 220 rotates around the rotating shaft 230 under the drive of the connector 210, which drives the reset member 240 to twist and generate torsional elastic potential energy. After the rotation is completed, the elastic potential energy generated by the rotation of the reset member 240 pulls it to reset.

[0038] Example 2

[0039] like Figures 5 to 7 As shown, in another embodiment, the connector 210 includes a connecting rubber 211, a connecting profile 212 fixed on the connecting rubber 211, and a wheel frame 213 slidably mounted in the connecting profile 212.

[0040] The connecting rubber 211 is adhered and fixed to the elastic layer 120. The edge of the connecting rubber 211 extends outward from the elastic layer 120 and bends, forming an inward curling tendency. A snap-fit ​​strip 214 protrudes from the inwardly curled side of the connecting rubber 211. A snap-fit ​​groove 215 is formed on the connecting profile 212. The snap-fit ​​groove 215 and the snap-fit ​​strip 214 can be fitted and positioned together. The connecting profile 212 is positioned relative to the elastic layer 120 through the snap-fit ​​groove 215 and the snap-fit ​​strip 214. The connecting profile 212 can also be detachably installed onto the connecting rubber 211. A cavity is formed inside the connecting profile 212, and the rotating frame 213 is slidably housed within the cavity. Part of the rotating frame 213 extends outward through the side wall of the connecting profile 212. A rotating shaft mounting base 220 is fixedly connected to the portion of the rotating frame 213 extending outward from the connecting profile 212, and the rotating shaft 230 is fixed within the rotating shaft mounting base 220.

[0041] The reset component 240 includes a torsion bar mounting base 244 mounted on the rotating shaft mounting base 220, a torsion bar 242 inserted into the torsion bar mounting base 244, and a limiting ring 243 sleeved on the torsion bar 242.

[0042] Torsion bar mounting seats 244 are respectively disposed on the upper and lower sides of the side wall plate 10, corresponding to the pivot mounting seats 220. The torsion bar mounting seats 244 are fixed to the end of the pivot 230. Two sets of torsion bar mounting seats 244 are symmetrically arranged corresponding to the pivot 230. The torsion bars 242 are preferably made of spring steel. One end of the torsion bar 242 is detachably inserted into the torsion bar mounting seat 244 at one end of the side wall plate 10, and the other end of the torsion bar 242 is detachably inserted into the body profile 30 at the other end of the side wall plate 10. There are two torsion bars 242, which are arranged crosswise between the two pivots 230. The limiting ring 243 is sleeved at the intersection of the two torsion bars 242 to limit the spatial position of the torsion bars 242 when they rotate.

[0043] When the rotating shaft 230 drives the torsion bar mounting seat 244 to rotate, the torsion bar mounting seat 244 drives the corresponding torsion bar 242 to rotate, forming an elastic reset internal stress. When the rotating shaft 230 no longer applies the rotation force, the two torsion bars 242 generate reset rotation. Under the traction of the torsion bars 242, the side wall panel 10 is reset to the starting position.

[0044] like Figures 8 to 11 As shown, the present invention also provides a method for preparing a sidewall panel, specifically including the following steps:

[0045] Step 1: Place the raw materials into the lower mold. First, lay the phenolic resin prepreg fiber into the lower mold, and then attach nitrile rubber layers to both sides. The nitrile rubber layers have perforations 121 evenly arranged on them. The phenolic resin matrix layer 110 provides extremely high tear resistance. The nitrile rubber layers are placed on both sides of the phenolic resin to enhance the elastic strength of the sidewall panels for use in a through-channel configuration.

[0046] Step 2: Lay auxiliary materials onto the raw materials. A porous separator membrane, a breathable cloth, and a vacuum bag membrane are laid on top of the nitrile rubber layer. The porous separator membrane and breathable cloth provide drainage channels for waste gas and wastewater generated during the bonding of the nitrile rubber layer and phenolic resin, preventing the accumulation of waste gas and wastewater in the mold cavity. The vacuum bag membrane is attached to the breathable cloth, and the vacuum tube of the vacuum bag membrane extends through the upper mold. When a vacuum is drawn inside the vacuum bag membrane, pressure can be applied to the breathable cloth and the porous separator membrane.

[0047] Step 3: After mold closing, a vacuum is created, and the side wall panels are pressurized and heated for vulcanization. The upper mold is then placed on top of the lower mold, forming a cavity. Air is extracted from between the vacuum bag film and the lower mold cavity wall through the vacuum tube of the vacuum bag film, creating vacuum pressure. High-pressure gas is then introduced into the cavity through another high-pressure gas pipe in the upper mold, increasing the pressure inside the cavity and simultaneously heating the entire mold, providing high-pressure and high-heat vulcanization conditions for the nitrile rubber layer and phenolic resin.

[0048] Step 4: Maintain temperature and pressure until vulcanization is complete, and remove vulcanizing gases and moisture. In a high-temperature, high-pressure environment, a chemical reaction occurs between phenolic resin and nitrile rubber, generating cross-linking products to achieve the purpose of vulcanizing the nitrile rubber. The phenolic resin undergoes a condensation reaction at high temperature, and during this condensation deformation, it fills the pores 121 of the nitrile rubber, thereby improving the bonding strength between the phenolic resin and the nitrile rubber. Gases and moisture generated during vulcanization can also be quickly discharged through the pores 121, improving reaction efficiency.

[0049] Step 5: Open the mold and remove the side wall panels.

[0050] In the above preparation method, negative pressure can reduce the melting point of vulcanization, reduce the time of high temperature environment maintenance, reduce equipment investment costs, and improve production efficiency. The pitted holes 121 can provide a way for the discharge of reaction products such as water vapor, and can also allow phenolic resin to be embedded in nitrile rubber, making the elastic layer 120 and the matrix layer 110 more firmly bonded.

[0051] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A side wall panel (10) characterized by: The application relates to a side wall plate (10), a rotating shaft assembly (20) and a vehicle body profile (30).

2. A side wall panel (10) according to claim 1, characterized in that: The rotating shaft assembly (20) comprises a connecting piece (210) mounted on the elastic layer (120), a rotating shaft mounting base (220) mounted on the connecting piece (210) and a rotating shaft (230) rotatably mounted on the rotating shaft mounting base (220), the connecting piece (210) connects the rotating shaft mounting base (220) and the elastic layer (120), and the rotating shaft mounting base (220) is fixed on the connecting piece (210).

3. A through passage, characterized in that The vehicle body profile (30) is in a rotary bending structure, one end of the vehicle body profile (30) is mounted on a vehicle body, and the rotating shaft (230) is mounted on the other end of the vehicle body profile (30).

4. A through passage according to claim 3, wherein: The rotating shaft mounting base (220) is provided with a reset member (240), the reset member (240) has reset elasticity, and the reset member (240) is fixedly connected to the rotating shaft mounting base (220) and the rotating shaft (230) respectively.

5. A through passage according to claim 4, wherein: The reset member (240) is a spring, the two ends of the reset member (240) are provided with stretching bases (241), the stretching bases (241) are fixed on the rotating shaft mounting base (220) and the rotating shaft (230) respectively, and the stretching bases (241) buckle the reset member (240).

6. A through passage according to claim 5, wherein: ​ 7. A through passage according to claim 6, wherein: ​ 8. A through passage according to claim 6, wherein: The connecting piece (210) comprises a connecting rubber (211), a connecting profile (212) fixed on the connecting rubber (211), and a rotating wheel frame (213) slidably installed in the connecting profile (212), the connecting rubber (211) is fixedly attached to the elastic layer (120), the edge of the connecting rubber (211) extends outward from the elastic layer (120) and is bent, a clamping strip (214) is further protruded on the inner curled side edge of the connecting rubber (211), a clamping groove (215) is formed on the connecting profile (212), the clamping groove (215) and the clamping strip (214) are fitted and positioned, the rotating wheel frame (213) is slidably accommodated in the profile cavity of the connecting profile (212), and the rotating wheel frame (213) extends to the outside through the connecting profile (212) and is connected to the rotating shaft mounting seat (220).

9. A through passage according to claim 8, wherein: The reset member (240) comprises a torsion bar mounting seat (244) installed on the rotating shaft mounting seat (220), a torsion bar (242) inserted into the torsion bar mounting seat (244), and a limiting ring (243) sleeved on the torsion bar (242), the torsion bar mounting seat (244) is arranged on the upper and lower sides of the rotating shaft mounting seat (220) corresponding to the side wall plate (10), the torsion bar mounting seat (244) is fixed on the end of the rotating shaft (230), one end of the torsion bar (242) is detachably inserted into the torsion bar mounting seat (244) on one end of the side wall plate (10), the other end of the torsion bar (241) is detachably inserted into the vehicle body profile (30) on the other end of the side wall plate (10), and the limiting ring (243) is sleeved on the position where the two torsion bars (242) intersect.

10. A method for producing the side wall plate (10) according to any one of claims 1 and 2, characterized by: The method comprises the following steps: Step 1: placing raw materials into the lower mold, first laying phenolic resin prepreg fibers in the lower mold, attaching nitrile rubber layers on both sides, and opening the hemp holes (121) on the nitrile rubber layer, the hemp holes (121) being uniformly arranged on the nitrile rubber layer; Step 2: laying auxiliary materials on the raw materials, sequentially laying a hole isolation film, a breather cloth and a vacuum bag film above the nitrile rubber layer, and inserting a vacuum tube of the vacuum bag film from the upper mold; Step 3: after closing the mold, vacuumizing, pressurizing and heating the side wall plate (10) to vulcanize; Step 4: maintaining temperature and pressure until vulcanization is completed, discharging vulcanization gas and moisture, and filling the hemp holes (121) of the nitrile rubber when the phenolic resin in the matrix layer condenses, and the gas and moisture generated during vulcanization can also be quickly discharged through the hemp holes (121); Step 5: opening the mold and taking out the side wall plate (10).

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