Segment production line

Abstract

This invention discloses a precast tunnel segment production line, relating to the field of precast tunnel segment production technology. The production line includes a steam curing kiln body, a curing kiln body, a curing mechanism, a transfer mechanism, and multiple steam curing mechanisms, all located on top of the steam curing kiln body. The curing mechanisms are spaced apart above the tunnel segment molds and installed on the curing kiln body. Each curing mechanism includes a connecting end and a free end, the free end being used to release a curing film at the curing location. The transfer mechanism is slidably positioned between the steam curing kiln body and the curing kiln body, and is used to transfer the tunnel segment molds from the steam curing space to the curing space. This invention, through the synergistic effect of the steam curing kiln body and the curing kiln body, forms a highly efficient precast tunnel segment production line, not only optimizing the overall efficiency of steam curing and curing but also significantly reducing unevenness caused by human operation, thereby improving the production efficiency and quality of precast tunnel segments.

Description

Technical Field

[0001] This invention relates to the field of precast tunnel segment production technology, and in particular to a segment production line. Background Technology

[0002] Precast tunnel segment technology, as a key component manufacturing process in modern tunnel engineering, has undergone a transformation from traditional manual production to mechanized production. With the acceleration of urbanization and the increasing demand for infrastructure construction such as subways and underground pipelines, the application of precast tunnel segments is becoming more and more widespread.

[0003] Currently, the production of precast tunnel segments mainly employs steam curing technology to improve the early strength and overall quality of concrete. This technology uses steam to allow the concrete to reach the required strength standards in a relatively short time, after which it is covered with a curing membrane for further curing, ensuring that the precast tunnel segments meet the requirements of engineering construction.

[0004] However, poor steam curing can easily lead to uneven curing of concrete, affecting its strength and durability, and causing concrete quality problems in precast tunnel segments. Therefore, in actual production, balancing the effectiveness of steam curing with the management of the curing process to ensure the quality of concrete forming has become a major bottleneck restricting the current production efficiency and quality of precast tunnel segments. This problem not only affects production costs but also has a serious impact on subsequent construction. Summary of the Invention

[0005] The main objective of this invention is to propose a segment production line that aims to solve the concrete quality problems caused by poor steam curing effect and uneven curing during the current production process of precast shield tunnel segments.

[0006] To achieve the above objectives, the present invention proposes a tunnel segment production line for use in shield tunnel segment molds, wherein the shield tunnel segment molds are filled with concrete.

[0007] The segment production line includes:

[0008] The steam curing kiln body forms a steam curing space for accommodating the shield tunnel segment mold;

[0009] Multiple steam curing mechanisms are housed within the steam curing space, and the multiple steam curing mechanisms are spaced apart on the top of the steam curing kiln body along the length direction of the shield tunnel segment mold;

[0010] The curing kiln body is arranged at an interval from the steam curing kiln body, and the curing kiln body forms a curing space for accommodating the shield tunnel segment mold.

[0011] A support frame is provided within the maintenance space and is framed outside the tunnel segment mold;

[0012] A maintenance mechanism is provided, spaced above the tunnel segment mold; the maintenance mechanism includes a connecting end and a free end, the connecting end is provided on the support frame, and the free end is provided between the connecting end and the tunnel segment mold. A maintenance membrane is detachably connected to the free end, and the free end can move between an initial position upward away from the tunnel segment mold and a maintenance position downward close to the tunnel segment mold, and is used to release the maintenance membrane at the maintenance position.

[0013] The shield tunnel segment mold is detachably installed in the transfer mechanism, which is slidably disposed between the steam curing kiln body and the curing kiln body, and is used to transfer the shield tunnel segment mold from the steam curing space to the curing space.

[0014] In one embodiment, the concrete covers the segment reinforcement cage and multiple reserved pipes. The side wall of the shield tunnel segment mold has multiple reserved holes. The number of reserved holes is the same as the number of reserved pipes and they are set in a one-to-one correspondence. Each reserved hole is connected to its corresponding reserved pipe.

[0015] A support frame is installed within the steam curing space. The support frame is connected to the inner wall of the steam curing kiln body. The support frame is spaced apart on one side of the shield tunnel segment mold where multiple reserved holes are opened. Multiple temperature measuring structures are installed on the support frame. The number of temperature measuring structures is consistent with the number of reserved holes and is set one-to-one. Each temperature measuring structure extends into the corresponding reserved hole and the corresponding reserved pipe. All multiple temperature measuring structures and multiple steam curing mechanisms are electrically connected to the control mechanism.

[0016] In one embodiment, each of the temperature measuring structures includes a mounting cylinder and a temperature sensor. One end of the mounting cylinder is detachably connected to the bracket, and the other end of the mounting cylinder has a groove. The temperature sensor is inserted into the groove and extends into the corresponding reserved hole and the corresponding reserved pipe. The temperature sensor is electrically connected to the control mechanism.

[0017] In one embodiment, each of the steam curing mechanisms includes a hanging bracket, a mounting plate, and a steam generator. One end of the hanging bracket is installed on the top of the steam curing kiln body, and the other end of the hanging bracket is connected to the mounting plate. The steam generator is installed on the mounting plate and is electrically connected to the control mechanism.

[0018] In one embodiment, the mounting plates are spaced apart above the tunnel segment mold, the mounting plates have an arc adapted to the tunnel segment mold, and the mounting plates have a plurality of vent holes, all of which are connected to the steam generator through pipes.

[0019] In one embodiment, the maintenance mechanism includes a connecting plate, a lifting drive, a maintenance frame, and a pick-and-place structure. The connecting plate is disposed on the support frame and forms the connecting end. The maintenance frame is disposed below the connecting plate. The pick-and-place structure is installed on the maintenance frame and is detachably connected to the maintenance film. The pick-and-place structure and the maintenance frame together form the free end. The lifting drive is installed on the connecting plate, and the output end of the lifting drive is connected to the maintenance frame and is used to drive the maintenance frame and the pick-and-place structure to move between the initial position and the maintenance position.

[0020] In one embodiment, the maintenance frame includes a main frame and a plurality of mounting pipes. The plurality of mounting pipes extend along the width direction of the shield tunnel segment mold and are spaced apart on the main frame along the length direction of the shield tunnel segment mold. The main frame is connected to the output end of the lifting drive component, and each mounting pipe is equipped with the pick-and-place structure.

[0021] In one embodiment, the connecting plate has a plurality of vertically extending guide grooves, which are spaced apart circumferentially along the connecting plate; the main frame includes a frame body and a plurality of guide rods, the number of guide rods being the same as the number of guide grooves and arranged in a one-to-one correspondence; each guide rod is slidably installed in the guide groove vertically; the frame body is connected to the output end of the lifting drive component; and a plurality of mounting pipes are spaced apart on the frame body along the length direction of the shield tunnel segment mold.

[0022] In one embodiment, each of the mounting pipes has a plurality of ventilation holes on the side facing the tunnel segment mold; the loading and unloading structure includes a fan and a duct, the fan is mounted on the main frame, the duct is installed inside each of the mounting pipes, and each of the ventilation holes is connected to the fan through the duct.

[0023] In one embodiment, the support frame includes a transverse slide rail extending along the length of the tunnel segment mold, and the connecting end of the maintenance mechanism is slidably mounted on the transverse slide rail along the length of the tunnel segment mold.

[0024] The technical solution of this invention forms a highly efficient precast tunnel segment production line through the synergistic effect of the steam curing kiln body and the curing kiln body. Multiple steam curing mechanisms evenly arranged within the steam curing kiln body effectively provide steam to the concrete within the tunnel segment mold, ensuring uniform heating of the concrete throughout the heating process, thereby improving its early strength and overall quality. The transfer mechanism then transfers the steam-cured molds to the curing kiln. In the curing space, a support frame provides stable support for the curing mechanism, ensuring the reliability of the curing process. The curing mechanism, through the flexible movement of its free end, achieves efficient coverage of the curing film, ensuring uniform coverage of the concrete surface and improving the uniformity and effectiveness of curing. This not only optimizes the overall efficiency of steam curing and curing but also significantly reduces unevenness caused by human operation, improving the production efficiency and quality of precast tunnel segments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a segment production line according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of an embodiment of the steam curing kiln body provided by the present invention;

[0028] Figure 3 This is a schematic diagram of another embodiment of the steam curing kiln body provided by the present invention;

[0029] Figure 4 This is a schematic diagram of a structure of an embodiment of the shield tunnel segment mold provided by the present invention;

[0030] Figure 5 A schematic diagram of a control mechanism according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of another embodiment of the segment production line provided by the present invention;

[0032] Figure 7 A schematic diagram of a structure of an embodiment of the maintenance mechanism provided by the present invention;

[0033] Figure 8 This is a schematic diagram of a ventilation hole according to an embodiment of the present invention.

[0034] Description of Figure Numbers:

[0035] 10. Shield tunnel segment mold; 11. Reserved hole; 20. Steam curing kiln body; 21. Steam curing space; 30. Steam curing mechanism; 40. Temperature measuring structure; 50. Support; 60. Control mechanism; 41. Mounting cylinder; 42. Temperature sensor; 22. Hanger; 23. Mounting plate; 24. Steam generator; 25. Vent hole; 26. Accommodation space;

[0036] 100. Support frame; 200. Maintenance mechanism; 210. Connecting plate; 220. Lifting drive component; 230. Maintenance frame; 240. Picking and placing structure; 231. Main frame; 232. Installation pipe; 211. Guide groove; 233. Frame; 234. Guide rod; 201. Ventilation hole; 110. Transverse slide rail.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0041] Currently, the production of precast tunnel segments mainly employs steam curing technology to improve the early strength and overall quality of concrete. This technology uses steam to allow the concrete to reach the required strength standards in a relatively short time, after which it is covered with a curing membrane for further curing, ensuring that the precast tunnel segments meet the requirements of engineering construction.

[0042] However, poor steam curing can easily lead to uneven curing of concrete, affecting its strength and durability, and causing concrete quality problems in precast tunnel segments. Therefore, in actual production, balancing the effectiveness of steam curing with the management of the curing process to ensure the quality of concrete forming has become a major bottleneck restricting the current production efficiency and quality of precast tunnel segments. This problem not only affects production costs but also has a serious impact on subsequent construction.

[0043] To address this technical problem, the present invention proposes a segment production line.

[0044] Please see Figures 1 to 8 In one embodiment of the present invention, the segment production line is used for a shield tunnel segment mold 10, which is filled with concrete. The segment production line includes a curing kiln body 20, a maintenance kiln body, a support frame 100, a maintenance mechanism 200, a transfer mechanism, and multiple curing mechanisms 30. The curing kiln body 20 forms a curing space 21 for accommodating the shield tunnel segment mold 10. The multiple curing mechanisms 30 are all housed within the curing space 21 and are spaced apart at the top of the curing kiln body 20 along the length of the shield tunnel segment mold 10. The maintenance kiln body is spaced apart from the curing kiln body 20, forming a maintenance space for accommodating the shield tunnel segment mold 10. The support frame 100 is disposed within the maintenance space. The shield tunnel segment mold 10 is located within the space and framed outside the shield tunnel segment mold 10. The curing mechanism 200 is spaced above the shield tunnel segment mold 10. The curing mechanism 200 includes a connecting end and a free end. The connecting end is located on the support frame 100, and the free end is located between the connecting end and the shield tunnel segment mold 10. The free end is detachably connected to a curing membrane. The free end can move between an initial position that moves upward away from the shield tunnel segment mold 10 and a curing position that moves downward towards the shield tunnel segment mold 10, and is used to release the curing membrane at the curing position. The shield tunnel segment mold 10 is detachably installed on a transfer mechanism. The transfer mechanism is slidably located between the steam curing kiln body 20 and the curing kiln body, and is used to transfer the shield tunnel segment mold 10 from the steam curing space 21 to the curing space.

[0045] It should be noted that the detachable connection between the curing film and the free end can be, but is not limited to, negative pressure adsorption or bonding. Negative pressure adsorption is achieved by a negative pressure device in the prior art, and bonding is achieved by pressure-sensitive adhesive in the prior art. The transfer mechanism can be, but is not limited to, a transfer vehicle or transfer machinery in the prior art.

[0046] Specifically, the tunnel segment production line includes a steam curing kiln body 20, a maintenance kiln body, a support frame 100, a maintenance mechanism 200, a transfer mechanism, and multiple steam curing mechanisms 30. The steam curing kiln body 20 provides a steam curing space 21 for accommodating the tunnel segment mold 10. The multiple steam curing mechanisms 30 are evenly arranged at the top of the steam curing kiln along the length of the mold, ensuring that the concrete is heated evenly throughout the heating process, thereby improving the steam curing effect, making the heat distribution more uniform during the steam curing process, and significantly improving the molding quality of the concrete.

[0047] During the curing process, the transfer mechanism moves the steam-cured concrete along with the tunnel segment mold 10 to the curing kiln, which forms a curing space to accommodate the tunnel segment mold 10. A support frame 100 is placed within the curing space, providing stable support for the curing mechanism 200. The curing mechanism 200 is positioned above the tunnel segment mold 10 and includes a connecting end and a free end. The connecting end is connected to the support frame 100, while the free end can move the curing membrane, which is detachably connected to it, up and down between an initial position and a release position. This allows the curing membrane to effectively cover the concrete for uniform curing, further enhancing the strength and durability of the concrete.

[0048] Furthermore, the transfer mechanism ensures the smooth transfer of the mold, moving it from the steam curing space 21 to the maintenance space. Through the rational combination of these structures, the segment production line of the present invention not only improves production efficiency but also ensures that the precast shield segments meet high standards in terms of strength and durability.

[0049] More specifically, multiple steam curing units 30 are arranged within the steam curing space 21 and spaced apart along the length of the tunnel segment mold 10. This ensures that steam is evenly distributed across the entire tunnel segment mold 10, thereby improving the uniformity of concrete heating during the steam curing process. Furthermore, each steam curing unit 30 can operate independently, further enhancing the flexibility and adaptability of the steam curing kiln and facilitating optimized steam curing for different production environments and concrete characteristics.

[0050] The support frame 100 enhances the overall structural stability of the curing kiln. Its frame is positioned outside the shield tunnel segment mold 10, ensuring that the shield tunnel segment mold 10 will not shift or deform during operation or transportation. Simultaneously, the support frame 100 allows the curing mechanism 200 to operate more flexibly, thereby improving the curing efficiency of the concrete poured into the shield tunnel segment mold 10.

[0051] The curing mechanism 200 has a connecting end and a free end. The connecting end is fixed to the support frame 100, while the free end can move between the connecting end and the shield segment mold 10. The free end is detachably connected to the curing membrane, allowing the curing membrane to efficiently cover the concrete surface. During the curing process, the free end can move between the initial position and the curing position, allowing the curing membrane to be released onto the concrete surface, ensuring uniform coverage. When the free end of the curing mechanism 200 reaches the curing position, it releases the curing membrane onto the surface of the shield segment mold 10, i.e., the top surface of the concrete in the shield segment mold 10. This process significantly improves the membrane coverage efficiency and avoids the problems of unevenness and inefficiency caused by manual operation. In addition, the release and retraction of the curing membrane are both automatically completed by the curing mechanism 200, eliminating the influence of human factors and thus improving the automation level of precast shield segment production.

[0052] In the technical solution provided by this invention, a highly efficient precast tunnel segment production line is formed through the synergistic effect of the steam curing kiln body 20 and the curing kiln body. Multiple steam curing mechanisms 30 evenly arranged within the steam curing kiln body 20 effectively provide steam to the concrete within the tunnel segment mold 10, ensuring uniform heating of the concrete throughout the heating process, thereby improving its early strength and overall quality. The transfer mechanism then transfers the steam-cured mold to the curing kiln. In the curing space, the support frame 100 provides stable support for the curing mechanism 200, ensuring the reliability of the curing process. The curing mechanism 200, through the flexible movement of its free end, achieves efficient coverage of the curing film, ensuring uniform coverage of the concrete surface and improving the uniformity and effectiveness of curing. This not only optimizes the overall efficiency of steam curing and curing but also significantly reduces the unevenness caused by human operation, improving the production efficiency and quality of precast tunnel segments.

[0053] As an optional implementation of this embodiment, the curing film is made of plastic.

[0054] It should be noted that the curing film is a polyethylene (PE) film, polyvinyl chloride (PVC) film, polypropylene (PP) film, or composite material film as used in existing technologies.

[0055] Specifically, plastic components are used as the material for the curing membrane primarily because plastic materials possess excellent flexibility, lightweight properties, and water resistance, allowing them to better adapt to concrete surfaces of various shapes in practical applications. The plastic curing membrane effectively prevents moisture evaporation, maintains the humidity of the concrete, and provides a favorable environment for concrete curing.

[0056] Furthermore, the corrosion resistance of plastic materials enhances the applicability of the protective film under various environmental conditions, ensuring it remains unaffected by chemicals during long-term use and maintains its functionality and stability. The use of this material also facilitates the production and processing of the protective film, allowing for the customization of films of different thicknesses and sizes to meet the needs of diverse projects.

[0057] As another optional implementation of this embodiment, the orthographic projection area of ​​the curing membrane at the bottom of the curing kiln body is A, and the orthographic projection area of ​​the shield tunnel segment mold 10 at the bottom of the curing kiln body is B, where A > B.

[0058] It should be noted that the projected area here represents the area where the curing membrane can completely cover the top surface of the concrete in the shield tunnel segment mold 10 after the free end releases the curing membrane at the curing position.

[0059] Specifically, since the curing membrane can completely cover the concrete surface (i.e. the part exposed on the top surface of the shield tunnel segment mold 10) in the shield tunnel segment mold 10, it avoids uneven coverage and ensures that the concrete in the same shield tunnel segment mold 10 has a consistent curing effect, thereby improving the strength and durability of the precast shield tunnel segments.

[0060] More specifically, by completely covering the upper surface of the concrete in the tunnel segment mold 10 with a curing membrane, the membrane effectively prevents moisture evaporation, providing a stable curing environment and ensuring consistent humidity levels during curing. This improves the curing effect of the concrete in the same tunnel segment mold 10, thereby enhancing the strength and durability of the concrete.

[0061] In addition, full coverage reduces the risk of cracks and insufficient strength that may result from localized drying or uneven curing, ensuring the overall quality of precast tunnel segments.

[0062] Please continue reading Figure 1 , Figure 4 and Figure 5 In an embodiment of the present invention, concrete covers the segment reinforcement cage and multiple reserved pipes. Multiple reserved holes 11 are provided on one side wall of the shield segment mold 10. The number of reserved holes 11 is the same as the number of reserved pipes and they are arranged in a one-to-one correspondence. Each reserved hole 11 is connected to its corresponding reserved pipe. A support 50 is provided in the steam curing space 21. The support 50 is connected to the inner wall of the steam curing kiln body 20. The support 50 is spaced apart on the side of the shield segment mold 10 where multiple reserved holes 11 are provided. Multiple temperature measuring structures 40 are provided on the support 50. The number of temperature measuring structures 40 is the same as the number of reserved holes 11 and they are arranged in a one-to-one correspondence. Each temperature measuring structure 40 extends into the corresponding reserved hole 11 and the corresponding reserved pipe. The multiple temperature measuring structures 40 and the multiple steam curing mechanisms 30 are all electrically connected to the control mechanism 60.

[0063] Specifically, multiple temperature measuring structures 40 are mounted on the support 50 and connected to the inner wall of the curing kiln body 20. The number of temperature measuring structures 40 matches the number of pre-drilled holes 11 to ensure that each temperature measuring structure 40 can accurately monitor the temperature of its corresponding area. The temperature measuring structures 40 extend into the corresponding pre-drilled holes 11 and pre-drilled pipes to acquire the concrete temperature information in real time and transmit the data to the control mechanism 60 for processing. This real-time monitoring can effectively reflect the actual temperature changes of the concrete during the curing process, and promptly adjust the working state of the curing mechanism 30 to ensure that the temperature of each area of ​​the concrete remains within the preset required range.

[0064] Furthermore, multiple temperature measuring structures 40 and multiple steam curing mechanisms 30 are electrically connected to the control mechanism 60, forming a closed-loop control system. Through the intelligent adjustment of the control mechanism 60, the steam curing kiln can automatically adjust the steam supply according to real-time temperature data to achieve the goal of zoned steam curing. This significantly improves the accuracy of steam curing and avoids cracking problems caused by uneven temperature.

[0065] More specifically, multiple temperature-measuring structures 40, in conjunction with multiple steam curing mechanisms 30, monitor the temperature changes of the concrete within the tunnel segment mold 10 in real time. This not only allows for timely capture of temperature information from various areas but also enables adjustments to the steam supply based on this data, ensuring that the temperature of the concrete in each area within the tunnel segment mold 10 remains within the preset temperature range. This significantly reduces the risk of concrete cracking caused by uneven temperature in traditional steam curing methods, substantially improving the overall performance and quality of the precast tunnel segments. Furthermore, this technical solution enhances the controllability of the steam curing process, greatly reducing production defects caused by temperature fluctuations. This results in improved strength and durability of the precast tunnel segments, increasing production efficiency and ensuring the long-term safety of the precast tunnel segments.

[0066] Please continue reading Figure 1 , Figure 4 and Figure 5 In an embodiment of the present invention, each temperature measuring structure 40 includes a mounting cylinder 41 and a temperature sensor 42. One end of the mounting cylinder 41 is detachably connected to the bracket 50, and the other end of the mounting cylinder 41 has a groove. The temperature sensor 42 is inserted into the groove and extends into the corresponding reserved hole 11 and the corresponding reserved pipe. The temperature sensor 42 is electrically connected to the control mechanism 60.

[0067] It should be noted that the temperature sensor 42 may be, but is not limited to, an NTC thermistor sensor as used in the prior art.

[0068] Specifically, each temperature measuring structure 40 includes a mounting cylinder 41 and a temperature sensor 42. One end of the mounting cylinder 41 is detachably connected to the bracket 50 using a clamp or bolts in the prior art, making the maintenance and replacement of the temperature measuring structure 40 more convenient. The other end of the mounting cylinder 41 has a groove in which the temperature sensor 42 is inserted, allowing the temperature sensor 42 to remain stable within the mounting cylinder 41 and ensuring that its position does not shift during the temperature measurement process, thereby improving the accuracy of the temperature measurement.

[0069] More specifically, the temperature sensor 42 extends into the corresponding reserved hole 11 and reserved pipe, effectively monitoring the temperature changes inside the concrete in the shield tunnel segment mold 10. This not only enables the temperature sensor 42 to accurately acquire temperature data from various areas of the concrete but also provides favorable conditions for subsequent data transmission and processing. The temperature sensor 42 is electrically connected to the control mechanism 60, ensuring that the acquired temperature information can be transmitted to the control mechanism 60 in real time for analysis and processing. The control mechanism 60 can quickly adjust the working state of the steam curing mechanism 30 based on the real-time temperature change data to achieve precise control of the concrete steam curing process.

[0070] As an optional implementation of this embodiment, the outer diameter of the mounting cylinder 41 is smaller than the inner diameter of the pre-drilled hole 11. This ensures that the mounting cylinder 41 can be smoothly inserted into the pre-drilled hole 11 and that sufficient clearance is maintained during placement. This clearance not only facilitates installation and disassembly but also effectively prevents tightening due to potential thermal expansion or other external factors.

[0071] As another optional implementation of this embodiment, a heat insulation sleeve is fitted around the mounting cylinder 41. The heat insulation sleeve is made of polyester fiber, as is available in the prior art, to isolate the influence of high-temperature steam generated during the steam curing process on the temperature measuring structure 40, thereby ensuring the measurement accuracy and stability of the temperature sensor 42. By wrapping the mounting cylinder 41 with the heat insulation sleeve, interference from external heat sources to the temperature sensor 42 can be reduced, thereby improving temperature measurement accuracy. This ensures the stability of the temperature measuring structure 40 during long-term operation, making the real-time monitoring function effective for a long period.

[0072] Please continue reading Figure 1 and Figure 5 In an embodiment of the present invention, each steam curing mechanism 30 includes a bracket 22, a mounting plate 23, and a steam generator 24. One end of the bracket 22 is installed on the top of the steam curing kiln body 20, and the other end of the bracket 22 is connected to the mounting plate 23. The steam generator 24 is installed on the mounting plate 23 and is electrically connected to the control mechanism 60.

[0073] It should be noted that the steam generating device 24 is a water pipe type steam generator or an electric heating steam generator in the prior art, and the control mechanism 60 is in the prior art.

[0074] Specifically, each steam curing unit 30 includes a bracket 22, a mounting plate 23, and a steam generator 24. One end of the bracket 22 is installed on the top of the steam curing kiln body 20, ensuring the stability and safety of the steam curing unit 30, and also providing a good position for the uniform release of steam. The other end of the bracket 22 is connected to the mounting plate 23, which serves as a support platform for the steam generator 24, ensuring the stability and continuous operation of the equipment. Based on this, the steam generator 24 is installed on the mounting plate 23, mainly responsible for converting water into steam and releasing it evenly into the steam curing space 21. It can effectively provide the required amount of steam, thereby meeting the heat demand during the concrete steam curing process and ensuring uniform heating of the concrete.

[0075] More specifically, the steam generator 24 is electrically connected to the control mechanism 60, enabling intelligent control of the steam curing process. Based on real-time data collected by the temperature sensor 42, the control mechanism 60 automatically adjusts the operating status of the steam generator 24, such as the amount and frequency of steam generation and release, to ensure that the concrete temperature remains within a preset range during the steam curing process. This closed-loop control system significantly improves the accuracy of the concrete steam curing process, can promptly respond to temperature fluctuations, and avoids potential problems caused by uneven steam supply.

[0076] In an embodiment of the present invention, mounting plates 23 are spaced apart above the shield tunnel segment mold 10. The mounting plates 23 have an arc adapted to the shield tunnel segment mold 10, and multiple ventilation holes 25 are formed on the mounting plates 23. The multiple ventilation holes 25 are all connected to the steam generator 24 through pipes.

[0077] Specifically, the spacing of the mounting plates 23 creates an effective steam propagation channel between the tunnel segment mold 10 and the mounting plates 23, ensuring that the steam is not blocked or obstructed and can flow freely into the interior of the tunnel segment mold 10 to heat and moisten the concrete. This not only improves the efficiency of steam utilization but also helps maintain temperature uniformity within the mold.

[0078] Meanwhile, the curvature of the mounting plate 23 is adapted to the shield tunnel segment mold 10, allowing the steam to better adhere to the top surface of the mold 10, reducing the occurrence of cold and hot spots and helping to maintain the overall temperature uniformity of the concrete. This ensures that the steam can effectively cover every area of ​​the mold, providing excellent conditions for the uniform steam curing of the concrete.

[0079] More specifically, the multiple vents 25 allow steam to be evenly released from the mounting plate 23 into the tunnel segment mold 10, ensuring that steam covers every part of the mold 10 and effectively preventing uneven drying or insufficient hardening of the concrete due to insufficient steam. This uniform steam distribution is crucial for improving the strength and performance of the concrete.

[0080] Each vent 25 is connected to the steam generator 24 through a pipe, which can flexibly adjust the steam supply and flow rate, further ensuring the uniform diffusion of steam within the shield tunnel segment mold 10.

[0081] In an optional implementation of this embodiment, a receiving space 26 is formed between the mounting plate 23 and the top wall of the steam curing kiln body 20, and the steam generator 24 is housed within the receiving space 26. Firstly, the receiving space 26 provides an independent working area for the steam generator 24, effectively preventing the direct impact of high temperature and steam on other components, thereby improving the overall service life of the equipment. It also reduces steam leakage, resulting in higher steam utilization efficiency within the steam curing space 21. Secondly, housing the steam generator 24 within the receiving space 26 effectively reduces the external space occupied by the equipment, making the overall structure more compact and improving the flexibility and adaptability of the steam curing kiln. Furthermore, the receiving space 26 facilitates the maintenance and repair of the steam generator 24. When maintenance is required, operators can easily disassemble and reassemble the steam generator 24 without disassembling other parts of the equipment, reducing the complexity and time cost of maintenance.

[0082] As another optional implementation of this embodiment, the support 50 is arched from bottom to top, and the support 50 has an arc adapted to the shield tunnel segment mold 10. First, the arched support 50 from bottom to top can effectively improve the load-bearing capacity and stability of the support 50 itself, ensuring that the load from the temperature measuring structure 40 can be evenly distributed during the steam curing process, reducing deformation or damage caused by gravity. This effectively improves the overall strength of the support 50, allowing it to maintain stability during long-term use. Second, the arc of the support 50 is adapted to the shield tunnel segment mold 10, allowing the support 50 to fit closely to the shape of the shield tunnel segment mold 10, ensuring that the temperature measuring structure 40 can better match the reserved holes 11 of the shield tunnel segment mold 10, improving the reliability of temperature monitoring during the steam curing process. In addition, the arched support 50 also provides a more ideal path for the flow of steam to a certain extent, promoting better circulation and diffusion of steam within the steam curing space 21, further improving the steam curing efficiency. This fluidity not only helps to promote heat transfer but also effectively avoids the accumulation of moisture, ensuring the quality of concrete steam curing.

[0083] Please continue reading Figure 6In an embodiment of the present invention, the maintenance mechanism 200 includes a connecting plate 210, a lifting drive 220, a maintenance frame 230, and a pick-and-place structure 240. The connecting plate 210 is disposed on the support frame 100 and forms a connecting end. The maintenance frame 230 is disposed below the connecting plate 210. The pick-and-place structure 240 is installed on the maintenance frame 230. The pick-and-place mechanism is detachably connected to the maintenance film. The pick-and-place structure 240 and the maintenance frame 230 together form a free end. The lifting drive 220 is installed on the connecting plate 210. The output end of the lifting drive 220 is connected to the maintenance frame 230 and is used to drive the maintenance frame 230 and the pick-and-place structure 240 to move between the initial position and the maintenance position.

[0084] Specifically, the connecting plate 210 is mounted on the support frame 100 to form a connecting end, providing stable support for the entire curing mechanism 200. The curing frame 230 is located below the connecting plate 210 and is driven by the lifting drive component 220, ensuring that the curing membrane can move smoothly between the initial position and the curing position, thereby curing the concrete in the tunnel segment mold 10.

[0085] More specifically, the output end of the lifting drive component 220 is connected to the curing frame 230, which is responsible for driving the curing frame 230 to move up and down between the initial position and the curing position. When the curing frame 230 descends to the curing position, the curing film can quickly and evenly cover the upper surface of the concrete in the shield tunnel segment mold 10, thereby improving the curing effect and ensuring the strength and durability of the concrete in the shield tunnel segment mold 10.

[0086] The loading / unloading structure 240 is mounted on the curing frame 230 and detachably connected to the curing membrane. It allows for rapid release and retraction of the curing membrane during the curing process. This not only improves operational efficiency but also adapts to the needs of different molds, further optimizing the production process.

[0087] In addition, the connecting plate 210 provides extra stability for the release process of the curing membrane, ensuring that the free end does not shake or shift during operation.

[0088] Please continue reading Figure 7 In an embodiment of the present invention, the maintenance frame 230 includes a main frame 231 and a plurality of mounting pipes 232. The plurality of mounting pipes 232 extend along the width direction of the shield tunnel segment mold 10 and are spaced apart on the main frame 231 along the length direction of the shield tunnel segment mold 10. The main frame 231 is connected to the output end of the lifting drive component 220, and each mounting pipe 232 is equipped with a pick-and-place structure 240.

[0089] Specifically, multiple installation pipes 232 extend along the width direction of the shield tunnel segment mold 10 and are installed at intervals on the main frame 231 along the length direction of the mold. The curing frame 230 can evenly distribute the curing membrane within a specified range, thereby ensuring a more uniform coverage effect and avoiding local lack of curing of the concrete in the shield tunnel segment mold 10. This ensures that the curing frame 230 can apply force evenly and comprehensively when releasing the curing membrane to cover and protect the concrete in the shield tunnel segment mold 10, thereby improving curing efficiency and effectively reducing the decrease in strength and durability of concrete caused by uneven curing, thus improving the finished quality of precast shield tunnel segments.

[0090] More specifically, the main frame 231 is connected to the output end of the lifting drive component 220, allowing the curing frame 230 to move up and down under the control of the lifting drive component 220. This ability to move up and down enables the curing membrane to quickly switch between the initial and curing positions, allowing for timely removal or covering of the concrete surface, thereby achieving an efficient curing process.

[0091] In addition, each installation pipe 232 is equipped with a pick-and-place structure 240. This pick-and-place structure 240 allows the curing membrane to be quickly released when needed and quickly retrieved after curing. This not only improves operational efficiency but also adapts to the curing needs of different tunnel segment molds 10, reducing the need for manual intervention.

[0092] Please continue reading Figure 7 In an embodiment of the present invention, the connecting plate 210 is formed with a plurality of vertically extending guide grooves 211, which are spaced apart along the circumference of the connecting plate 210; the main frame 231 includes a frame 233 and a plurality of guide rods 234, the number of guide rods 234 being consistent with the number of guide grooves 211 and being arranged in a one-to-one correspondence; each guide rod 234 is slidably installed in the guide groove 211 along the vertical direction; the frame 233 is connected to the output end of the lifting drive component 220; and a plurality of mounting pipes 232 are spaced apart along the length direction of the shield tunnel segment mold 10 on the frame 233.

[0093] Specifically, the connecting plate 210 has multiple vertically extending guide grooves 211. These guide grooves 211 are spaced apart around the circumference of the connecting plate 210 to make the movement of the curing frame 230 more stable and to effectively guide the curing frame 230 to maintain vertical alignment during lifting and lowering, so as to avoid the curing membrane being in a deviated state when released due to tilting or swaying, which would cause the concrete in the shield tunnel segment mold 10 to be not evenly covered by the curing membrane.

[0094] More specifically, the main frame 231 includes a frame body 233 and multiple guide rods 234. The number of guide rods 234 corresponds to the number of guide slots 211, ensuring that each guide rod 234 can slide within its corresponding guide slot 211. This ensures that the curing frame 230 can move smoothly up and down under the action of the lifting drive component 220, maintaining the stability and accuracy of the structure, and further improving the covering efficiency and accuracy of the curing film.

[0095] The guide rod 234 is vertically slidably installed within the guide groove 211, controlling the position of the curing frame 230 during lifting and lowering, thus avoiding alignment errors caused by free movement. Furthermore, the frame 233 is connected to the output end of the lifting drive component 220, enabling the entire curing frame 230 to move efficiently via the lifting drive component 220. This ensures that the curing membrane can be quickly and evenly applied to the target surface when covering concrete, reducing errors caused by manual operation.

[0096] Furthermore, multiple installation pipes 232 are spaced apart on the frame 233 along the length of the shield tunnel segment mold 10, ensuring that the curing membrane is evenly distributed throughout the mold. This not only increases the effective coverage area of ​​the curing membrane but also ensures the uniformity of concrete curing within the shield tunnel segment mold 10, effectively improving the curing effect and avoiding quality problems caused by insufficient local coverage.

[0097] As an optional implementation of this embodiment, the frame 233 is arched from bottom to top, and the frame 233 has an arc that is adapted to the shield tunnel segment mold 10.

[0098] Specifically, the frame 233 has an arc that is adapted to the shield tunnel segment mold 10, ensuring that the curing frame 230 can better fit the top surface shape of the concrete in the shield tunnel segment mold 10, so as to provide a more uniform curing effect.

[0099] More specifically, the arched shape of frame 233 effectively reduces the tension of the curing membrane during the covering process when covering concrete, reduces localized drying caused by the curing membrane not adhering to the concrete surface, and ensures that the curing membrane can play a uniform role throughout the curing process.

[0100] Furthermore, the curvature of the frame 233 not only matches the shape of the tunnel segment mold 10, but also provides excellent support for the suspension of the curing membrane, effectively preventing sagging due to gravity and thus avoiding gaps between the curing membrane and the concrete surface, ensuring uniform curing effect. The arch of the frame 233 also facilitates the rapid unfolding and retraction of the curing membrane, improving the ease of operation and efficiency of the curing mechanism 200.

[0101] Please continue reading Figure 8In an embodiment of the present invention, each mounting pipe 232 has a plurality of ventilation holes 201 formed on the side facing the shield tunnel segment mold 10; the pick-and-place structure 240 includes a fan and a duct, the fan is installed on the main frame 231, a duct is installed in each mounting pipe 232, and each ventilation hole 201 is connected to the fan through the duct.

[0102] It should be noted that the wind turbine is existing technology.

[0103] Specifically, when the installation pipe 232 is in the release position, the blower blows air through the duct to each ventilation hole 201, causing the curing membrane to detach from the side of the installation pipe 232 facing the shield tunnel segment mold 10. During this process, the blower continues to operate, ensuring that the curing membrane facing the installation pipe 232 continuously receives air pressure from the blower and adheres to the concrete surface in the shield tunnel segment mold 10. This reduces the air gap between the curing membrane and the concrete surface in the shield tunnel segment mold 10. By guiding the airflow, the release of the curing membrane and its adhesion to the concrete surface are improved, which not only enhances the moisture retention capacity of the concrete but also improves the quality of the precast shield tunnel segments. Similarly, when recovering the curing membrane, the blower's air pressure can be used to adsorb the curing membrane covering the shield tunnel segment mold 10 from the release position and move it back to the initial position, thus completing the recovery of the curing membrane, improving the recovery efficiency, and further optimizing the curing process of the concrete in the shield tunnel segment mold 10.

[0104] In an embodiment of the present invention, the support frame 100 includes a transverse slide rail 110, which extends along the length of the shield tunnel segment mold 10, and the connecting end of the maintenance mechanism 200 is slidably mounted on the transverse slide rail 110 along the length of the shield tunnel segment mold 10.

[0105] Specifically, the transverse slide rail 110 allows the maintenance mechanism 200 to move along the length of the shield tunnel segment mold 10, so that the maintenance mechanism 200 can flexibly adjust its position in different positions and with different shapes of the shield tunnel segment mold 10, in order to achieve more precise maintenance operations.

[0106] Furthermore, the transverse slide rail 110 can effectively reduce errors during the application of the curing membrane, allowing it to be applied more evenly to the upper surface of the concrete in the tunnel segment mold 10. Operators can more easily adjust the position of the curing mechanism 200, thereby ensuring the effective coverage of the curing membrane and guaranteeing that the concrete in the tunnel segment mold 10 achieves better moisture retention and strength enhancement during curing.

[0107] The above are merely exemplary embodiments of the present invention and do not limit the scope of the patent of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A segment production line, characterized in that, Used for shield tunnel segment molds, the shield tunnel segment molds being filled with concrete; The segment production line includes: The steam curing kiln body forms a steam curing space for accommodating the shield tunnel segment mold; Multiple steam curing mechanisms are housed within the steam curing space, and the multiple steam curing mechanisms are spaced apart on the top of the steam curing kiln body along the length direction of the shield tunnel segment mold; The curing kiln body is arranged at an interval from the steam curing kiln body, and the curing kiln body forms a curing space for accommodating the shield tunnel segment mold. A support frame is provided within the maintenance space and is framed outside the tunnel segment mold; A maintenance mechanism is provided, spaced above the tunnel segment mold; the maintenance mechanism includes a connecting end and a free end, the connecting end is provided on the support frame, and the free end is provided between the connecting end and the tunnel segment mold. A maintenance membrane is detachably connected to the free end, and the free end can move between an initial position upward away from the tunnel segment mold and a maintenance position downward close to the tunnel segment mold, and is used to release the maintenance membrane at the maintenance position. The shield tunnel segment mold is detachably installed in the transfer mechanism, which is slidably disposed between the steam curing kiln body and the curing kiln body, and is used to transfer the shield tunnel segment mold from the steam curing space to the curing space.

2. The segment production line as described in claim 1, characterized in that, The concrete encapsulates the segment reinforcement cage and multiple reserved pipes. Multiple reserved holes are opened on one side wall of the shield tunnel segment mold. The number of reserved holes is consistent with the number of reserved pipes and is set in a one-to-one correspondence. Each reserved hole is connected to its corresponding reserved pipe. A support frame is installed within the steam curing space. The support frame is connected to the inner wall of the steam curing kiln body. The support frame is spaced apart on one side of the shield tunnel segment mold where multiple reserved holes are opened. Multiple temperature measuring structures are installed on the support frame. The number of temperature measuring structures is consistent with the number of reserved holes and is set one-to-one. Each temperature measuring structure extends into the corresponding reserved hole and the corresponding reserved pipe. All multiple temperature measuring structures and multiple steam curing mechanisms are electrically connected to the control mechanism.

3. The segment production line as described in claim 2, characterized in that, Each of the temperature measuring structures includes a mounting cylinder and a temperature sensor. One end of the mounting cylinder is detachably connected to the bracket, and the other end of the mounting cylinder has a groove. The temperature sensor is inserted into the groove and extends into the corresponding reserved hole and the corresponding reserved pipe. The temperature sensor is electrically connected to the control mechanism.

4. The segment production line as described in claim 3, characterized in that, Each of the steam curing mechanisms includes a hanging bracket, a mounting plate, and a steam generator. One end of the hanging bracket is installed on the top of the steam curing kiln body, and the other end of the hanging bracket is connected to the mounting plate. The steam generator is installed on the mounting plate and is electrically connected to the control mechanism.

5. The segment production line as described in claim 4, characterized in that, The mounting plates are spaced apart above the tunnel segment mold. The mounting plates have an arc that matches the tunnel segment mold, and multiple ventilation holes are formed on the mounting plates. All of the ventilation holes are connected to the steam generator through pipes.

6. The segment production line according to any one of claims 1 to 5, characterized in that, The maintenance mechanism includes a connecting plate, a lifting drive component, a maintenance frame, and a pick-and-place structure. The connecting plate is disposed on the support frame and forms the connecting end. The maintenance frame is disposed below the connecting plate. The pick-and-place structure is installed on the maintenance frame and is detachably connected to the maintenance film. The pick-and-place structure and the maintenance frame together form the free end. The lifting drive component is installed on the connecting plate. The output end of the lifting drive component is connected to the maintenance frame and is used to drive the maintenance frame and the pick-and-place structure to move between the initial position and the maintenance position.

7. The segment production line as described in claim 6, characterized in that, The maintenance frame includes a main frame and multiple mounting pipes. The multiple mounting pipes extend along the width direction of the shield tunnel segment mold and are spaced apart on the main frame along the length direction of the shield tunnel segment mold. The main frame is connected to the output end of the lifting drive component, and each mounting pipe is equipped with the pick-and-place structure.

8. The segment production line as described in claim 7, characterized in that, The connecting plate has multiple vertically extending guide grooves, which are spaced apart circumferentially along the connecting plate. The main frame includes a frame and multiple guide rods, the number of which corresponds to the number of guide grooves. Each guide rod is slidably installed in the guide groove vertically. The frame is connected to the output end of the lifting drive component. Multiple mounting pipes are spaced apart along the length of the shield tunnel segment mold on the frame.

9. The segment production line as described in claim 7, characterized in that, Each of the mounting pipes has multiple ventilation holes on the side facing the tunnel segment mold; the loading and unloading structure includes a fan and a duct, the fan is installed on the main frame, the duct is installed inside each of the mounting pipes, and each of the ventilation holes is connected to the fan through the duct.

10. The segment production line according to any one of claims 1 to 5, characterized in that, The support frame includes a transverse slide rail that extends along the length of the shield tunnel segment mold, and the connecting end of the maintenance mechanism is slidably mounted on the transverse slide rail along the length of the shield tunnel segment mold.

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