Asphalt mixture beam forming mold and beam preparation process

Abstract

This application provides an asphalt mixture beam forming mold and a beam preparation process. The mold includes two forming parts and two sets of filler parts. The forming parts have cavities and two through holes. The filler parts include filler rods and multiple filler seats. The filler rods have multiple filler blocks that correspond one-to-one with the multiple filler seats, and the corresponding filler seats and filler blocks are connected by a mating structure. When the forming parts are used alone, two pre-formed matrix units can be formed. Subsequently, by merging the two forming parts, an assembly of two pre-formed matrix units with a limiting cavity and a secondary feeding channel can be formed. In this assembly, the limiting cavity can limit the sag of the optical cable, and the secondary feeding channel ensures the feasibility of feeding. The asphalt mixture beam forming mold and beam preparation process provided in this application utilize the pre-formed matrix units to support and position the optical cable, thereby meeting the precise positioning requirements of the optical cable in ultra-long beams.

Description

Technical Field

[0001] This application belongs to the field of beam forming technology, specifically relating to an asphalt mixture beam forming mold and beam preparation process. Background Technology

[0002] Asphalt mixture beams are commonly used test components in road engineering, bridge structures, and material performance testing. By pre-embedding ultra-weak optical fibers inside the beam, distributed monitoring of internal parameters such as strain and temperature can be achieved. In conventional production processes, to ensure the safety of the optical fiber, a protective layer must be applied to its surface before pre-embedding to form the optical cable. During processing, the optical cable is typically pulled, supported, and positioned using through holes at both ends of a mold, allowing the cable to pass through the beam along its length and remain in the preset position. Subsequently, asphalt mixture is poured, and after it cures, a beam with an embedded optical cable is formed.

[0003] In existing technologies, for beams with relatively short lengths, the aforementioned through-hole positioning method at both ends can effectively control the spatial position of the optical cable. The sag generated by the optical cable under its own weight is small, so its impact on the final forming quality is negligible. However, when the beam length exceeds a certain critical value, the optical cable, constrained at both ends and free in the middle, will experience downward sag in its central region under gravity. This causes the actual position to deviate from the design value, the bending radius to be too small, which can easily damage the optical fiber, and the additional strain generated by the sag will distort subsequent monitoring data. The position of the optical cable in different batches of beams cannot be reproduced, resulting in a loss of comparability in the tests. Summary of the Invention

[0004] This application provides an asphalt mixture beam forming mold and beam preparation process, which aims to support and position optical cables through pre-formed matrix units during beam preparation, so as to meet the precise positioning requirements of optical cables in ultra-long beams.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A molding die for asphalt mixture beams is provided, comprising: Two molded parts; each of the molded parts has a cavity with an opening on one side, and through holes are provided on opposite sides of the inner wall of the cavity, and the through holes form an opening at the opening plane of the cavity; Two sets of fillers are respectively disposed in the two cavities; each set of fillers includes: A filling rod has its two ends respectively embedded in the two through holes; a plurality of hemispherical filling blocks are spaced apart along its axial direction on the filling rod, and when the filling rod is combined with the molded part, the spherical surface of the filling block faces the bottom surface of the cavity; Multiple filling seats, each corresponding to one of the multiple filling blocks, are arranged at intervals along the axial direction of the filling rod in the cavity and are detachably connected to the bottom surface of the cavity; The filling seat and the filling block are connected by a docking structure, which is a separable rod-shaped member. One end of the rod-shaped member is connected to the corresponding filling seat, and the other end is connected to the corresponding filling block. Furthermore, the two molded parts are configured to mate vertically, so that the two cavities are connected to form an integral cavity, and the two through holes that are vertically opposite each other together constitute an installation hole for the optical cable to pass through.

[0006] In one possible implementation, the docking structure includes: A positioning shaft is fixedly disposed on the top surface of the filling seat; and The alignment bushing is fixedly mounted on the outer wall of the filler block, and its axial direction is parallel to the central axis of the filler block. The positioning shaft is adapted to be inserted into the alignment sleeve to restrict relative movement between the filling rod and the filling seat along the positioning shaft radially.

[0007] In one possible implementation, the asphalt mixture beam forming mold further includes: A worktable, wherein both of the molded parts are used to fix the upper surface of the worktable; The bottom surface of the cavity is provided with multiple feed ports corresponding to the multiple filling seats, and when the filling seat is connected to the bottom surface of the cavity, each filling seat closes the corresponding feed port. The worktable has two sets of bosses corresponding to the two molded parts, and each set of bosses includes multiple bosses for being fitted into multiple feed ports in a one-to-one correspondence.

[0008] In one possible implementation, the bottom surface of the cavity is provided with multiple sets of reserved holes corresponding to the multiple filling seats, and each set of reserved holes includes multiple reserved holes arranged around the corresponding feed inlet. The filling seat has multiple mounting screws that are inserted into the multiple reserved holes one by one, and each mounting screw is threaded with a locking nut that abuts against the bottom surface of the molded part; The bottom surface of the workbench has multiple clearance holes, each of which corresponds to one of the mounting screws, for inserting a disassembly tool to separate the locking nut and the mounting screw.

[0009] In one possible implementation, the molded part further includes: A cap is used to fix the molded part in place to close the opening of the cavity.

[0010] In this embodiment, by using the molding component alone, i.e., by combining the corresponding molding component and filler component, a pre-formed matrix unit can be formed after a single injection of the mixture. This pre-formed matrix unit has a strip groove formed by the filler rod, a hemispherical groove formed by the filler block, an indented groove formed by the filler seat, and a material passage channel formed by the docking structure. Among them, the hemispherical groove, the material passage channel, and the indented groove together constitute the material passage channel. Based on this, by aligning the two molding components vertically, the two pre-formed matrix units can be docked synchronously, thereby connecting the two strip grooves to form a limiting cavity for accommodating the optical cable; at the same time, the two material passage channels are connected to form a secondary feeding channel into which the mixture can be injected a second time, so as to realize the combination of the two pre-formed matrix units.

[0011] The core of the above method lies in the pre-construction of interconnected limiting cavities and secondary feeding channels within the pre-formed matrix units using fillers, enabling the insertion and secondary anchoring of the optical cable after subsequent assembly. Through this technique, the limiting cavities extend continuously along the entire length of the beam, their inner walls formed by two strip-shaped grooves. This provides full-length radial constraint and axial support for the inserted optical cable, effectively suppressing the sag of the cable under gravity and ensuring the spatial positioning accuracy and bending radius safety of the cable within the ultra-long beam. Simultaneously, the existence of the secondary feeding channel allows for the injection of a mixture after the two pre-formed matrix units are joined, forming a structure that anchors the two matrix units together without relying on external supports or temporary fixing devices, simplifying the molding process.

[0012] Compared with existing technologies, the asphalt mixture beam forming mold provided in this embodiment can achieve precise support and positioning of the optical cable in the ultra-long beam through the coordinated design of the limiting cavity and the secondary feeding channel in the pre-formed matrix unit, without the need to add external auxiliary positioning components. It fundamentally solves the core problems of optical cable sagging in the middle, excessively small bending radius and distortion of monitoring data under the traditional two-end through-hole positioning method, thereby ensuring the forming quality of the ultra-long test beam, the safety of the optical fiber and the comparability of tests between different batches.

[0013] The technical solution adopted in this application also provides a beam preparation process, based on the asphalt mixture beam forming mold proposed in any of the foregoing claims, including the following steps: S100. Fix the two molded parts on a horizontal plane, with the openings of the two cavities facing upwards; S200. Install the two sets of filling elements into the two cavities respectively; S300. A mixture is poured into the two cavities to form two sets of preformed matrix units; wherein, each preformed matrix unit has a strip-shaped groove formed by filling with the filling rod, and the strip-shaped groove has multiple hemispherical grooves connected to it and formed by filling with the filling block; the preformed matrix unit also has multiple recessed grooves formed by filling with the filling seat, and each recessed groove is connected to its corresponding hemispherical groove through a material passage formed by filling with the docking structure; the hemispherical grooves, the material passage, and the recessed grooves combine to form a material passage; S400. Recycle both of the aforementioned fillers; S500. The two molded parts are aligned in the vertical direction so that the two pre-formed base units are synchronously connected; wherein, the two strip grooves are connected to form a limiting cavity, and the two material passages and the limiting cavity together form a secondary feeding channel; S600. Insert the optical cable into the limiting cavity; S700. Pour the mixture into the secondary feeding channel to form an anchor solid structure that combines the two preformed matrix units; S800. Deform the formwork to obtain the beam.

[0014] In one possible implementation, recycling the two fillers includes: Move the filling rod upward to separate the filling rod from the corresponding preformed matrix unit, and at the same time separate the docking structure axially; Separate the molded part from the filler seat; Remove the assembly of the preformed matrix unit and the filler seat; Separate the preformed matrix unit and the filler seat; The preformed substrate unit is placed back into the cavity.

[0015] In one possible implementation, the mating of the two molded parts along the vertical direction includes: One of the cavities is sealed by a cap; The molded part that is sealed is rotated 180 degrees with its length as the axis, so that the cover is facing down; The molded parts and the cap are translated so that the two molded parts are arranged in the vertical direction; Pull the cap outwards, causing the upper molded part to move downwards, thus completing the engagement of the two molded parts.

[0016] In one possible implementation, in S500, after the two preformed substrate units are docked, the two material passages are parallel to each other, so that the mixture subsequently poured into the hemispherical groove avoids the subsequently inserted optical cable.

[0017] In one possible implementation, in S700, when the mixture is poured into the secondary feeding channel, pressure is applied to the mixture in the secondary feeding channel, causing part of the mixture in the hemispherical groove to enter the limiting cavity, forming a positioning structure to fix the optical cable.

[0018] The beneficial effects of the beam preparation process provided in this embodiment are the same as those of the aforementioned asphalt mixture beam forming mold, and will not be repeated here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of the asphalt mixture beam forming mold provided in the embodiments of this application; Figure 2 This is a three-dimensional structural diagram of the molded part, filler rod, and preformed substrate unit used in the embodiments of this application in an assembled state; Figure 3 This is a three-dimensional structural diagram of the molded part and filler used in the embodiments of this application in an assembled state; Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure from another perspective; Figure 5 for Figure 4 A magnified view of a portion of the middle circle A; Figure 6 This is a three-dimensional structural diagram of the filler rod, filler block, and alignment bushing used in the embodiments of this application in a combined state; Figure 7 This is a cross-sectional view of the filler block and alignment bushing used in the embodiments of this application in their combined state; Figure 8 This is an exploded view of the docking structure used in the embodiments of this application; Figure 9 This is a three-dimensional structural diagram of the filling seat and positioning shaft used in the embodiments of this application in a combined state; Figure 10 This is a three-dimensional structural diagram of the molded part used in the embodiments of this application; Figure 11 This is a cross-sectional view of the molded part and the filler seat used in the embodiments of this application in an assembled state; Figure 12 This is a three-dimensional structural diagram of the workbench used in the embodiments of this application; Figure 13 This is a partially enlarged schematic diagram of the worktable used in the embodiments of this application from a cross-sectional perspective; Figure 14 This is a three-dimensional structural diagram of the two preformed substrate units used in the embodiments of this application in a combined state; Figure 15 This is a three-dimensional structural diagram of the two preformed substrate units used in the embodiments of this application from a cross-sectional perspective. Figure 16 A flowchart of the beam fabrication process provided in the embodiments of this application; Explanation of reference numerals in the attached drawings: 1. Molded part; 11. Cavity; 12. Through hole; 13. Feed inlet; 14. Reserved hole; 2. Filler rod; 21. Filler block; 3. Filler seat; 31. Mounting screw; 32. Locking nut; 4. Butt joint structure; 41. Positioning shaft; 42. Alignment bushing; 5. Worktable; 51. Boss; 52. Clearance hole; 6. Cover; 10. Pre-formed base unit; 101. Strip groove; 20. Material passage; 201. Hemispherical groove; 202. Recessed groove; 203. Material passage. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] Please refer to the following: Figures 1 to 15 The asphalt mixture beam forming mold provided in this application is described below. When optical fibers participate in beam forming, a protective layer needs to be installed on their outer periphery to form an optical cable (hereinafter referred to as "optical cable").

[0026] The asphalt mixture beam forming mold proposed in this application includes two forming parts 1 and two sets of filling parts.

[0027] The two molded parts 1 adopt the same cuboid structure, and their length is greater than the length of the beam to be prepared.

[0028] Each molded part 1 has a cavity 11 with an opening on one side. The cavity 11 has a rectangular cross-section, and the length of this rectangle is equal to the length of the beam. The opening of the cavity 11 is used for filling in the raw material (i.e., asphalt mixture, hereinafter referred to as "mixture") and for removing the molded part.

[0029] Through holes 12 are provided on opposite sides of the inner wall of the cavity 11, and the through holes 12 form an opening at the open plane of the cavity 11; in this embodiment, the radial cross section of the through hole 12 is semi-circular, and the diameter of the semi-circle is greater than or equal to the outer diameter of the optical cable.

[0030] Two sets of fillers are respectively disposed in two cavities 11, occupying part of the space in the cavities 11 so that after the mixture is poured into the cavities 11, holes, cavities or channel structures of corresponding shapes appear on the molded product. Based on this, in this embodiment, each set of fillers includes a filler rod 2 and multiple filler seats 3.

[0031] The filling rod 2 is used to be set in the cavity 11, and when the filling rod 2 is set in the cavity 11, its two ends can be respectively embedded in the two through holes 12. At this time, the two ends of the filling rod 2 are respectively aligned with the two outer sides of the molded part 1.

[0032] Since the radial cross-section of the through hole 12 is semi-circular, in this embodiment, the radial cross-section of the filling rod 2 is a semi-circular shape that matches the through hole 12, that is, the filling rod 2 is a half-circular rod.

[0033] A plurality of filling blocks 21 are spaced apart along the axial direction on the filling rod 2, and each filling block 21 is fixedly connected to the filling rod 2 or integrally formed therefrom. In this embodiment, as shown... Figure 2As shown, there are five filler blocks 21, and each filler block 21 adopts a hemispherical structure. When the filler rod 2 is combined with the molded part 1, by rotating and adjusting the filler rod 2, the spherical surface of the filler block 21 can be made to face the bottom surface of the cavity 11, and due to the self-weight of the spherical surface of the filler block 21, the spherical surface of the filler block 21 is kept facing the bottom surface of the cavity 11.

[0034] Multiple filler seats 3 correspond one-to-one with multiple filler blocks 21; here, one-to-one correspondence means that the number is the same and the positions are opposite. Specifically, since there are five filler blocks 21, there are also five filler seats 3; and the five filler seats 3 are used to be spaced apart along the axial direction of the filler rod 2 in the cavity 11, and each filler seat 3 is detachably connected to the bottom surface of the cavity 11, so that each filler seat 3 and the corresponding filler block 21 are arranged along the opening direction of the cavity 11.

[0035] The corresponding filling seat 3 and filling block 21 are connected by a docking structure 4. In this embodiment, the docking structure 4 is a rod-shaped member that can be separated along its own axis. One end of the rod-shaped member is connected to the corresponding filling seat 3, and the other end is connected to the corresponding filling block 21.

[0036] In practical use, this mold has a first use state for individual use of the two molded parts 1, and a second use state for fitting the two molded parts 1 together. That is, the molded part 1, by virtue of its own cavity 11, can complete the preparation of a set of molded objects in the first use state; in addition, the two molded parts 1 are also configured to fit together in the vertical direction, so that the two cavities 11 are connected to form an integral cavity, by virtue of this integral cavity, another set of molded objects can be prepared in the second use state.

[0037] In the second usage state, the two through holes 12 that are opposite each other in the vertical direction together form a mounting hole. This mounting hole allows the optical cable to pass through, that is, the inner diameter of this mounting hole is greater than or equal to the outer diameter of the optical cable.

[0038] In this embodiment of the application, by using the molding part 1 alone, that is, by combining the corresponding molding part 1 and the filler, a pre-formed matrix unit 10 can be formed after a single injection of the mixture. For example... Figure 14 and Figure 15 As shown, this preformed substrate unit 10 has a strip-shaped groove 101 formed by the filling rod 2, a hemispherical groove 201 formed by the filling block 21, an indented groove 202 formed by the filling seat 3, and a material passage 203 formed by the docking structure 4. Among them, the hemispherical groove 201, the material passage 203 and the indented groove 202 together constitute the material passage 20.

[0039] Based on the above, by aligning the two molded parts 1 vertically, the two pre-formed substrate units 10 can be simultaneously connected, thereby connecting the two strip grooves 101 to form a limiting cavity for accommodating the optical cable. At the same time, the two material passages 20 are connected to form a secondary feeding channel into which a second mixture can be injected, thereby achieving the anchoring combination of the two pre-formed substrate units 10.

[0040] The core of the above method lies in the pre-construction of interconnected limiting cavities and secondary feeding channels within the pre-formed matrix unit 10 using fillers, enabling the insertion and secondary anchoring of the optical cable after subsequent assembly. Through this technique, the limiting cavities extend continuously along the entire length of the beam, their inner walls formed by two strip-shaped grooves 101. This provides radial constraint and axial support for the inserted optical cable along its entire length, effectively suppressing the sag of the cable under gravity and ensuring the spatial positioning accuracy and bending radius safety of the cable within the ultra-long beam. Simultaneously, the existence of the secondary feeding channel allows for the injection of a mixture after the two pre-formed matrix units 10 are joined, forming a structure that anchors the two matrix units together without relying on external supports or temporary fixing devices, simplifying the molding process.

[0041] Compared with the prior art, the asphalt mixture beam forming mold provided in this embodiment can achieve precise support and positioning of the optical cable in the ultra-long beam through the coordinated design of the limiting cavity and the secondary feeding channel in the pre-forming base unit 10 without the need to add external auxiliary positioning parts. It fundamentally solves the core problems of optical cable sagging in the middle, excessively small bending radius and distortion of monitoring data under the traditional positioning method with through holes 12 at both ends. This ensures the forming quality of the ultra-long test beam, the safety of the optical fiber and the comparability of tests between different batches.

[0042] In some embodiments, such as Figures 6 to 9 As shown, the docking structure 4 includes a positioning shaft 41 and an alignment sleeve 42.

[0043] The positioning shaft 41 is fixedly installed on the top surface of the filling seat 3. In this embodiment, the filling seat 3 adopts a frustum structure, and the positioning shaft 41 is offset from the central axis of the filling seat 3, that is, the positioning shaft 41 and the central axis of the filling seat 3 are parallel but do not coincide.

[0044] The alignment sleeve 42 is fixedly mounted on the outer wall of the filler block 21, and its axial direction is parallel to the central axis of the filler block 21. In this embodiment, the central axis of the alignment sleeve 42 is parallel to but does not coincide with the central axis of the filler block 21 (i.e., it coincides with the center of the spherical surface on the hemispherical structure and is perpendicular to the spherical surface).

[0045] When assembling the filler seat 3 and the filler block 21, the positioning shaft 41 can be inserted into the alignment sleeve 42 to restrict relative movement between the filler rod 2 and the filler seat 3 along the radial direction of the positioning shaft 41.

[0046] By adopting the above technical solution, a separable connection between the filling rod 2 and the filling seat 3 is achieved. Its advantages are: the cooperation between the positioning shaft 41 and the alignment sleeve 42 ensures precise alignment of the filling block 21 and the filling seat 3 during material injection, guaranteeing the molding quality of the material passage 203; simultaneously, during subsequent filling material recycling, simply pulling the filling rod 2 upwards allows the positioning shaft 41 to smoothly disengage from the alignment sleeve 42, achieving non-destructive separation and avoiding damage to the pre-formed matrix unit 10 caused by forceful disassembly.

[0047] Furthermore, due to the staggered arrangement, the material passage 203 can also be staggered on the basis of the coaxial arrangement of the hemispherical groove 201 and the recessed groove 202, so as to change the flow path of the injected mixture. This allows the mixture falling into the hemispherical groove 201 to flow to another set of material passages 20 below through the outer side of the optical cable passing through the hemispherical groove 201. As the lower material passage 20 is filled, the feeding method of piling up the mixture from the lower side is realized, which further reduces the risk of damage to the optical cable during the forming stage.

[0048] In some embodiments, such as Figure 12 and Figure 13 As shown, the asphalt mixture beam forming mold also includes a workbench 5.

[0049] The workbench 5 is fixedly mounted on a horizontal surface so that its upper side remains horizontal.

[0050] like Figure 1 As shown, when the two molded parts 1 are used individually (the mold is in the first use state), both molded parts 1 are fixed on the upper surface of the worktable 5.

[0051] like Figure 10 and Figure 11 As shown, the bottom surface of the cavity 11 has multiple feed ports 13 corresponding to multiple filling seats 3, and combined with Figure 4 and Figure 5 It can be seen that when the filling seat 3 is connected to the bottom surface of the cavity 11, each filling seat 3 closes the corresponding feed port 13 to prevent the mixture from leaking out of the feed port 13 when the mold is in the first use state.

[0052] Please see Figures 10 to 13The worktable 5 has two sets of bosses 51 corresponding to the two molded parts 1 respectively. Each set of bosses 51 includes multiple bosses 51. The multiple bosses 51 are used to be fitted into multiple feed ports 13 in a one-to-one correspondence, so as to limit the horizontal displacement of the molded parts 1 on the worktable 5, and ensure that the two molded parts 1 have a consistent reference surface when they are molded individually, laying the foundation for subsequent alignment accuracy.

[0053] Meanwhile, the feed port 13 can be used as a channel for secondary injection after the filler seat 3 is removed, realizing the multi-functionality of the mold; and during the secondary material feeding process (the filler seat 3 has been removed), the mixed material can be prevented from entering the lower feed port 13 by inserting the boss 51 into the feed port 13.

[0054] In some embodiments, such as Figure 5 , Figures 9 to 11 As shown, the bottom surface of the cavity 11 is provided with multiple sets of reserved holes 14 corresponding to multiple filling seats 3. Each set of reserved holes 14 includes multiple reserved holes 14 arranged around the corresponding feed inlet 13. Each reserved hole 14 adopts a structure in which the inner diameter gradually increases in the direction away from the opening of the cavity 11.

[0055] Correspondingly, the filler seat 3 has multiple mounting screws 31; after the filler seat 3 is placed into the cavity 11, the multiple mounting screws 31 can be inserted one by one into the multiple reserved holes 14. Based on this, each mounting screw 31 is threaded with a locking nut 32, which can abut against the bottom surface of the molded part 1 or the inner wall of the reserved hole 14 to restrict the movement of the filler seat 3 relative to the molded part 1.

[0056] Furthermore, in order to facilitate the disassembly and installation of the filling seat 3, the bottom surface of the workbench 5 is provided with multiple clearance holes 52, which correspond one-to-one with multiple mounting screws 31, so as to allow the disassembly tool to be inserted from the bottom of the workbench 5 to complete the separation of the locking nut 32 and the mounting screw 31.

[0057] The engagement of the mounting screw 31 and the locking nut 32 enables the detachable fixing of the filler seat 3 and the molded part 1. Its advantages are: by tightening the locking nut 32, the filler seat 3 is firmly pressed against the bottom surface of the cavity 11, preventing displacement due to buoyancy or vibration during the filling of the mixture; simultaneously, the clearance hole 52 allows the operator to use tools to loosen the locking nut 32 from below the worktable 5 without having to flip the heavy molded part 1, greatly facilitating the disassembly and assembly of the filler seat 3.

[0058] It should be noted that, in order to further ensure the continuity of the mold's use, during the secondary material feeding process, after removing the filler seat 3, a shaft that does not adhere to the mixture will be inserted into the reserved hole 14 in advance to prevent the mixture from clogging the reserved hole 14.

[0059] In some embodiments, such as Figure 1 As shown, the molded part 1 also includes a cover 6, which is used to fix the molded part 1 to close the opening of the cavity 11.

[0060] The cap 6 is used to close the opening when the molded part 1 is used alone, preventing the mixture from overflowing. Its beneficial effects are: during the molding process of the pre-molded base unit 10, the cap 6 can ensure that the mixture in the cavity 11 is compacted under pressure; and when the two molded parts 1 are joined, the cap 6 can also be used as an auxiliary tool for flipping and moving, which simplifies the operation process while preventing the pre-molded base unit 10 from moving.

[0061] It should be noted that, in this embodiment, the side of the cap 6 facing the molded part 1 has an irregular concave surface, so that the upper surface of the preformed matrix unit 10 has an irregular protrusion; after the two preformed matrix units 10 are combined, the two surfaces with irregular protrusions are joined together to form an anchoring space for small particles in the mixture to be squeezed in.

[0062] Based on the same inventive concept, this application also provides a beam preparation process, which is based on the asphalt mixture beam forming mold proposed in any of the foregoing claims. Please refer to those descriptions as well. Figures 1 to 16 This process includes the following steps: S100. Fix the two molded parts 1 on a horizontal plane (specifically the upper side of the workbench 5) so that the openings of the two cavities 11 face upwards.

[0063] S200. Install the two sets of fillers into the two cavities 11 respectively, specifically: First, align each filling seat 3 with the corresponding reserved hole 14 on the bottom surface of the cavity 11 through the mounting screw 31 at its bottom, so that the bottom surface of each filling seat 3 is closed with the corresponding feed port 13. Then, tighten the locking nut 32 from below the molded part 1 to fix the filling seat 3 to the bottom surface of the cavity 11. Then, the two ends of the filling rod 2 are respectively embedded into the through holes 12 on opposite sides of the inner wall of the cavity 11. At the same time, the spherical surface of each filling block 21 on the filling rod 2 is facing down and corresponds one-to-one with the filling seat 3 below. And ensure that the alignment bushing 42 on the outer wall of the filling block 21 is accurately fitted onto the positioning shaft 41 on the top surface of the filling seat 3 to form a separable docking structure 4. Finally, repeat all the above steps on the other molded part 1 to complete the installation of the two sets of fillers.

[0064] S300. Pour the mixture into the two cavities 11 to form two sets of preformed matrix units 10.

[0065] The preformed substrate unit 10 has a strip-shaped groove 101 formed by filling rod 2, and the strip-shaped groove 101 has a plurality of hemispherical grooves 201 connected to it and formed by filling block 21; the preformed substrate unit 10 also has a plurality of recessed grooves 202 formed by filling seat 3, and each recessed groove 202 is connected to the corresponding hemispherical groove 201 through a material passage 203 formed by filling with docking structure 4; the hemispherical grooves 201, the material passage 203 and the recessed grooves 202 are combined to form a material passage 20.

[0066] S400. When the mixture has initially solidified to the point where it can withstand slight operation without deformation, the two fillers are recycled, that is, the filler and the pre-formed matrix unit 10 are separated, and the filler and the pre-formed matrix unit 10 are also separated, but the pre-formed matrix unit 10 and the molded part 1 are ultimately kept in the relative positional relationship state at the end of S300.

[0067] S500. The two molded parts 1 are aligned in the vertical direction to make the two pre-formed base units 10 synchronously dock; at the same time, the two molded parts 1 are temporarily fixed with clamps or bolts to maintain the aligned state. Among them, the two strip grooves 101 are connected to form a limiting cavity extending in the horizontal direction, and the two material passages 20 are connected with the limiting cavity to form a secondary feeding channel.

[0068] S600. Insert the optical cable into the limiting cavity; In S600, when the optical cable is inserted into the limiting cavity formed by the two strip-shaped grooves 101, whether the optical cable can smoothly travel to the predetermined position depends on the matching relationship between the inner diameter of the limiting cavity and the outer diameter of the optical cable. In this embodiment, the following measures are taken to ensure smooth insertion of the optical cable for two different matching situations: Firstly, when the inner diameter of the limiting cavity is equal to the outer diameter of the optical cable (i.e., the inner diameter of the limiting cavity is equal to or slightly interference-fitted with the outer diameter of the optical cable), there is almost no gap between the optical cable and the inner wall of the cavity, resulting in high frictional resistance and the optical cable end easily getting stuck at the entrance. To ensure smooth progress, one or more of the following auxiliary methods can be adopted: I. Select a guide rod (such as a thin stainless steel rod or a carbon fiber rod) with an outer diameter smaller than the inner diameter of the limiting cavity, a smooth surface, and a certain degree of rigidity (hardness greater than that of the optical cable sheath). First, fully insert the guide rod from one end of the limiting cavity to the other end, so that it occupies the central axis position of the cavity. Then, fix the end of the optical cable to the tail end of the guide rod (using tape or a miniature collar). The operator slowly pulls out the guide rod, using the axial traction and radial constraint of the rod to make the optical cable travel in a straight line along the central path left by the rod, effectively preventing the optical cable from bending or piling up in the cavity. II. Apply a dedicated optical fiber lubricant (such as silicone-based grease or water-soluble lubricant) evenly to the surface of the optical cable to reduce the coefficient of friction between the optical cable and the inner wall of the cavity. At the same time, set a guide bell at the entrance of the limiting cavity (it can be softened and shaped by slightly heating the edge of the cavity entrance with a temporary chamfering tool or a hot air gun) to guide the end of the optical cable to enter smoothly and prevent shear resistance caused by right-angled edges.

[0069] III. Slowly inject low-pressure compressed air from one end of the limiting cavity using an air pump, controlling the pressure to 0.1~0.2MPa. This creates a slight positive pressure within the limiting cavity, providing an air cushion effect for the subsequent insertion of the optical cable. This air cushion effect partially offsets the contact pressure between the optical cable and the wall surface, significantly reducing sliding friction. Simultaneously, the airflow direction must be consistent with the optical cable insertion direction to help remove any residual dust or debris from the cavity, keeping the channel clean.

[0070] Secondly, when the inner diameter of the limiting cavity is larger than the outer diameter of the optical cable, especially when the inner diameter of the limiting cavity is 0.5~2mm larger than the outer diameter of the optical cable, there is a significant gap between the optical cable and the cavity wall. Theoretically, the insertion resistance is small, but the optical cable is prone to bending, folding, or lateral deviation during its journey due to its own weight or uneven thrust, making it impossible to pass through correctly from the other end. To ensure that the optical cable travels in a straight line along the axis of the limiting cavity, the following measures can be taken: I. A miniature permanent magnet (encased in a smooth plastic shell to prevent scratching the cavity) is fixed at the front end of the optical cable. Outside the cavity, a strong magnet moves synchronously along the cavity's path, attracting the magnet at the cable's front end and propelling the cable forward. This method is particularly suitable for longer beams or slightly curved cavities. The operator can control the speed and direction from the outside, while avoiding direct contact and friction with the cavity's inner wall.

[0071] II. Install an inflatable, flexible guide head (similar to a miniature torpedo-shaped airbag) at the front end of the optical cable. Before insertion, the guide head is in a retracted state, with an outer diameter smaller than that of the optical cable. Once the cable tip enters the limiting cavity, low-pressure gas is injected into the guide head through a miniature air tube, causing it to expand until it slightly contacts the inner wall of the cavity, thus maintaining the cable tip on the central axis of the cavity. During travel, the guide head acts as a self-centering mechanism, ensuring smooth passage of the optical cable even with slight bends or uneven cross-sections within the cavity. After the optical cable extends from the other end, deflate the gas and remove the guide head.

[0072] S700. The mixture is simultaneously poured into multiple sets of secondary feeding channels to form an anchor solid structure that combines two pre-formed matrix units 10.

[0073] In actual operation, the time interval between S300 and S400 should be controlled within a very small range (such as before the first complete molding of the mixture). S400, S500 and S600 should be executed quickly to ensure that the above process is completed and S700 is executed. The secondary feeding can ensure that the re-bonding strength of the preformed matrix unit 10 itself meets the overall structural requirements, so that the secondary-injected mixture and the first-molded matrix form a good integral interface-free weakened anchoring structure, avoiding interlayer cold joints caused by the initial molding or curing of the mixture. This ensures that the beam will not peel or crack along the preformed interface when subjected to stress or temperature changes, and realizes the integration of the two preformed matrix units 10 after secondary feeding.

[0074] S800. Demolding, i.e., separating the beam and the two molded parts 1 to obtain the beam with the optical cable.

[0075] The beneficial effects of the beam preparation process provided in this embodiment are as follows: By designing a phased process of preforming and secondary anchoring, the positioning of the optical cable is decoupled from the beam forming. First, limiting cavities and secondary feeding channels are reserved in two independent preformed base units 10. Then, final anchoring is achieved through alignment, cable threading, and secondary injection. This process avoids positioning deviations or fiber damage caused by directly inserting the optical cable before the mixture has cured. At the same time, the secondary injection mixture can fully fill the gap between the limiting cavity and the optical cable, forming a tight wrapping layer, which further enhances the axial fixing effect of the optical cable.

[0076] In some embodiments, the step of recycling the two fillers, as described above, includes: S1000. Move the filling rod 2 upward to separate the filling rod 2 from the corresponding preformed matrix unit 10, and at the same time separate the docking structure 4 along the axial direction; S2000. Separate the molded part 1 from the filler seat 3; S3000. Remove the assembly of the preformed base unit 10 and the filler seat 3; S4000. Separate the preformed matrix unit 10 and the filler seat 3; S5000. Place the preformed base unit 10 back into the cavity 11.

[0077] This recycling method, which begins with the filling rod 2, offers several advantages. Because the filling rod 2 is relatively long and integrated with multiple filling blocks 21, pulling it out first allows for leverage, enabling the simultaneous disengagement of all connection points in the docking structure 4, resulting in high operational efficiency. Subsequently, the preformed substrate unit 10, along with the filling seat 3, is removed together. Separating the filling seat 3 outside the mold avoids disassembly within the narrow cavity 11, reducing the risk of edge damage to the preformed substrate unit 10. This method is particularly suitable for scenarios where the filling seat 3 is tightly connected to the bottom surface of the cavity 11 and requires significant force to pull out.

[0078] In another embodiment, the step of recycling the two fillers includes: S1000. Separate the molded part 1 from the filler seat 3; S2000. Move the preformed base unit 10 upward to separate the preformed base unit 10 from the filler in the cavity 11; S3000. Place the preformed base unit 10 on a flat surface with the filler rod 2 facing upwards; S4000. Move the filling rod 2 upward to separate the filling rod 2 from the preformed matrix unit 10 and separate the docking structure 4 along the axial direction; S5000. Turn the preformed base unit 10 so that the filler seat 3 faces upward; S6000. Move the filler seat 3 upward to separate the filler seat 3 from the preformed matrix unit 10; S7000. Place the preformed base unit 10 back into the cavity 11.

[0079] This recycling method, starting with the pre-formed substrate unit 10, offers several advantages: First, the entire unit is demolded before the filler rod 2 and filler seat 3 are removed separately, avoiding repeated disassembly and reassembly of the bolts connecting the filler seat 3 to the molded part 1. This is particularly suitable for situations with a large number of filler seats 3 and lengthy disassembly and reassembly times. Simultaneously, placing the pre-formed substrate unit 10 on a flat operating table for subsequent separation provides ample operating space, facilitating the use of specialized tools or the application of uniform ejection force, effectively preventing cracking of the pre-formed substrate unit 10 due to excessive localized stress. Compared to the first method, this method adds a turning step but reduces wear on the pre-drilled holes 14 inside the molded part 1, making it more suitable for high-volume, continuous, and repetitive production scenarios.

[0080] In some embodiments, the step of aligning the two molded parts 1 in the vertical direction as described above includes: S1000. One of the cavities 11 is sealed by the cap 6; S2000. The molded part 1 that is being sealed is rotated 180 degrees with its length direction as the axis, so that the cover 6 faces downward; S3000. Translate the molded part 1 and the cover 6 so that the two molded parts 1 are arranged in the vertical direction; S4000. Pull the cover 6 outwards, causing the upper molded part 1 to move downwards, completing the engagement of the two molded parts 1.

[0081] By adopting the above technical solution, the cap 6 protects the surface of the pre-formed base unit 10 below from damage during the flipping process, and at the same time, as a support plate during translation, it ensures the horizontal alignment accuracy of the two pre-formed base units 10; when the cap 6 is pulled out, the upper molded part 1 falls smoothly under the action of gravity, avoiding the impact or misalignment that may be caused by direct fastening, and ensuring the accurate docking of the limiting cavity and the secondary feeding channel.

[0082] In some embodiments, S500, after the two pre-formed substrate units 10 are docked, the mating position of the molded part 1 can be controlled in advance so that the two material passages 203 are parallel to each other, thereby allowing the mixture subsequently poured into the hemispherical groove 201 to avoid the subsequently inserted optical cable.

[0083] The parallel arrangement of the material passage 203 optimizes the flow path of the secondary injection. Its beneficial effect is that during secondary injection, the mixture enters from the secondary feeding channel, flows through the recessed groove 202 and the material passage 203, and then reaches the hemispherical groove 201. Since the lower opening of the material passage 203 avoids the optical cable, the mixture will not directly impact the already positioned optical cable when filling the hemispherical groove 201, thereby avoiding the optical cable's deviation or bending caused by the material flow and ensuring the straightness of the optical cable in the limiting cavity.

[0084] In some embodiments, during S700, when the mixture is poured into the secondary feeding channel, pressure is applied to the mixture in the secondary feeding channel so that part of the mixture in the hemispherical groove 201 enters the limiting cavity to form a positioning structure that wraps around and fixes the optical cable.

[0085] By adopting the above technical solution, that is, by applying pressure to make the mixture continue to be squeezed into the tiny gap between the limiting cavity and the optical cable after filling the hemispherical groove 201, it can form a multi-point, ring-shaped protrusion structure. These protrusion structures hold the optical cable tightly like "buckles", which significantly improves the pull-out resistance and positional stability of the optical cable. Even if the beam is subjected to vibration or bending in subsequent tests, the optical cable will not slip or loosen, thus ensuring the continuity and accuracy of the monitoring data.

[0086] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mould for forming an asphaltic concrete beam, characterised in that, include: Two molded parts; each of the molded parts has a cavity with an opening on one side, and through holes are provided on opposite sides of the inner wall of the cavity, and the through holes form an opening at the opening plane of the cavity; Two sets of fillers are respectively disposed in the two cavities; each set of fillers includes: A filling rod has its two ends respectively embedded in the two through holes; a plurality of hemispherical filling blocks are spaced apart along its axial direction on the filling rod, and when the filling rod is combined with the molded part, the spherical surface of the filling block faces the bottom surface of the cavity; Multiple filling seats, each corresponding to one of the multiple filling blocks, are arranged at intervals along the axial direction of the filling rod in the cavity and are detachably connected to the bottom surface of the cavity; The filling seat and the filling block are connected by a docking structure, which is a separable rod-shaped member. One end of the rod-shaped member is connected to the corresponding filling seat, and the other end is connected to the corresponding filling block. Furthermore, the two molded parts are configured to mate vertically, so that the two cavities are connected to form an integral cavity, and the two through holes that are vertically opposite each other together constitute an installation hole for the optical cable to pass through.

2. The asphalt beam forming mold of claim 1, wherein, The docking structure includes: A positioning shaft is fixedly disposed on the top surface of the filling seat; and The alignment bushing is fixedly mounted on the outer wall of the filler block, and its axial direction is parallel to the central axis of the filler block. The positioning shaft is adapted to be inserted into the alignment sleeve to restrict relative movement between the filling rod and the filling seat along the positioning shaft radially.

3. The asphalt beam forming mold of claim 1, wherein, The asphalt mixture beam forming mold also includes: A worktable, wherein both of the molded parts are used to fix the upper surface of the worktable; The bottom surface of the cavity is provided with multiple feed ports corresponding to the multiple filling seats, and when the filling seat is connected to the bottom surface of the cavity, each filling seat closes the corresponding feed port. The worktable has two sets of bosses corresponding to the two molded parts, and each set of bosses includes multiple bosses for being fitted into multiple feed ports in a one-to-one correspondence.

4. The asphalt mixture beam forming mold as described in claim 3, characterized in that, The bottom surface of the cavity is provided with multiple sets of reserved holes corresponding to the multiple filling seats. Each set of reserved holes includes multiple reserved holes arranged around the corresponding feed inlet. The filling seat has multiple mounting screws that are inserted into the multiple reserved holes one by one, and each mounting screw is threaded with a locking nut that abuts against the bottom surface of the molded part; The bottom surface of the workbench has multiple clearance holes, each of which corresponds to one of the mounting screws, for inserting a disassembly tool to separate the locking nut and the mounting screw.

5. The asphalt mixture beam forming mold as described in claim 1, characterized in that, The molded part also includes: A cap is used to fix the molded part in place to close the opening of the cavity.

6. A beam preparation process, based on the asphalt mixture beam forming mold according to any one of claims 1-5, characterized in that, Includes the following steps: S100. Fix the two molded parts on a horizontal plane, with the openings of the two cavities facing upwards; S200. Install the two sets of filling elements into the two cavities respectively; S300. A mixture is poured into the two cavities to form two sets of preformed matrix units; wherein, each preformed matrix unit has a strip-shaped groove formed by filling with the filling rod, and the strip-shaped groove has multiple hemispherical grooves connected to it and formed by filling with the filling block; the preformed matrix unit also has multiple recessed grooves formed by filling with the filling seat, and each recessed groove is connected to its corresponding hemispherical groove through a material passage formed by filling with the docking structure; the hemispherical grooves, the material passage, and the recessed grooves combine to form a material passage; S400. Recycle both of the aforementioned fillers; S500. The two molded parts are aligned in the vertical direction so that the two pre-formed base units are synchronously connected; wherein, the two strip grooves are connected to form a limiting cavity, and the two material passages and the limiting cavity together form a secondary feeding channel; S600. Insert the optical cable into the limiting cavity; S700. Pour the mixture into the secondary feeding channel to form an anchor solid structure that combines the two preformed matrix units; S800. Deform the formwork to obtain the beam.

7. The beam fabrication process as described in claim 6, characterized in that, The recycling of the two fillers includes: Move the filling rod upward to separate the filling rod from the corresponding preformed matrix unit, and at the same time separate the docking structure axially; Separate the molded part from the filler seat; Remove the assembly of the preformed matrix unit and the filler seat; Separate the preformed matrix unit and the filler seat; The preformed substrate unit is placed back into the cavity.

8. The beam fabrication process as described in claim 6, characterized in that, The two molded parts that are joined together in the vertical direction include: One of the cavities is sealed by a cap; The molded part that is sealed is rotated 180 degrees with its length as the axis, so that the cover is facing down; The molded parts and the cap are translated so that the two molded parts are arranged in the vertical direction; Pull the cap outwards, causing the upper molded part to move downwards, thus completing the engagement of the two molded parts.

9. The beam fabrication process as described in claim 8, characterized in that, In S500, after the two preformed substrate units are docked, the two material passages are parallel to each other, so that the mixture subsequently poured into the hemispherical groove avoids the subsequently inserted optical cable.

10. The beam fabrication process according to any one of claims 6-9, characterized in that, In S700, when the mixture is poured into the secondary feeding channel, pressure is applied to the mixture in the secondary feeding channel, so that part of the mixture in the hemispherical groove enters the limiting cavity to form a positioning structure that fixes the optical cable.

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