Mold roughness influence test device and method for concrete segment forming bubbles

Abstract

The application provides a mold roughness influence test device and method for concrete segment forming bubbles, relates to the technical field of concrete prefabricated parts, and is used for studying the influence of different mold roughness on concrete segment forming bubbles; the device comprises a mounting frame, a first baffle, a second baffle, a third baffle, a first fastening module, a second fastening module, a first detection device, a second detection device, a first base plate and a second base plate; a plurality of hollow parts are arranged in the circumferential direction of the side wall of the mounting frame, the first baffle and the second baffle are arc-shaped, the cross section of the third baffle is U-shaped, and the three baffles are detachably connected to the hollow parts; the first fastening module is connected with the side wall of the mounting frame, the second fastening module is connected with the first base plate, the bottom end of the mounting frame is fixedly connected with the second base plate after penetrating through the first base plate, the first base plate can rotate relative to the second base plate, the first detection device is fixedly installed on the bottom end of the mounting frame, and the second detection device is fixedly installed on the first base plate.

Description

Technical Field

[0001] This invention relates to the field of precast concrete technology, specifically to an experimental apparatus and method for testing the effect of mold roughness on air bubbles in concrete segment molding. Background Technology

[0002] In modern urban construction, shield tunneling has become the preferred construction method for subway tunnel projects due to its advantages such as fast construction speed, high lining quality, and minimal impact on the surrounding environment. The core of this method lies in using precast concrete shield segments as the main structural units of the tunnel lining. The construction quality of these segments directly affects the safety, stability, and long-term service life of the entire subway tunnel project.

[0003] However, a common problem in the actual production of tunnel segments is the frequent formation of numerous air bubbles on the segment surface. These bubbles not only severely affect the aesthetics of the segments, but more importantly, they reduce their mechanical properties and impermeability, making it difficult for the segments to meet the stringent requirements for material strength and durability in subway tunnel engineering. Furthermore, the presence of bubbles leads to an increase in surface defects, easily creating stress concentration areas, which further weakens the overall strength and durability.

[0004] To address this issue, the inventors proposed an experimental device and method for studying the effect of mold roughness on air bubbles in concrete segment molding, which facilitates the study of the influence of different mold roughnesses on air bubbles in concrete segment molding. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an experimental device and method for studying the influence of mold roughness on air bubbles in concrete segment molding, for studying the influence of different mold roughness on air bubbles in concrete segment molding.

[0006] To achieve the above and other related objectives, the present invention provides a test device for the influence of mold roughness on air bubbles in concrete segment molding, comprising a mounting frame, a first enclosure plate, a second enclosure plate, a third enclosure plate, a first fastening module, a second fastening module, a first detection device, a second detection device, a first chassis, and a second chassis.

[0007] The mounting frame has multiple hollow sections arranged in a circumferential array on its side wall. The first and second surrounding plates are arc-shaped, and the third surrounding plate has a U-shaped cross section. The first, second, and third surrounding plates together form a casting space with an open top. The first, second, and third surrounding plates are detachably connected to the hollow sections.

[0008] The first enclosure and the second enclosure are respectively located on both sides of the third enclosure. The first fastening module is connected to the side wall of the mounting frame to press and fasten the first enclosure and the third enclosure. The second fastening module is connected to the first chassis to press and fasten the second enclosure and the third enclosure.

[0009] The bottom end of the mounting bracket passes through the first chassis and is fixedly connected to the second chassis. The first chassis can rotate relative to the second chassis. The first chassis is driven to rotate by a second drive motor fixedly installed on the second chassis. The first detection device is fixedly installed on the bottom end of the mounting bracket. The first detection device monitors the inner surface of the tube segment after it is formed. The second detection device is fixedly installed on the first chassis. The second detection device monitors the outer surface of the tube segment after it is formed.

[0010] Optionally, the first fastening module includes a T-shaped member, a worm gear, a turbine, a movable seat, a guide rod, a threaded rod, a pressure roller, a first gear, and a second gear;

[0011] The T-shaped component has a hollow inner cavity. The T-shaped component is fixedly connected to the side wall of the mounting bracket. The worm gear is vertically rotatably mounted on the T-shaped component. The turbine gear is horizontally rotatably mounted on the T-shaped component. The turbine gear meshes with the worm gear. The first gear is fixedly connected to the turbine gear and is coaxial. The first gear meshes with the second gear. The second gear is rotatably mounted on the T-shaped component and is axially penetrating.

[0012] One side of the movable seat is fixedly connected to the guide rod and the threaded rod, and the pressure roller is rotatably installed on the other side. The guide rod is slidably connected to the T-shaped piece, the threaded rod is threadedly connected to the second gear, the pressure roller is in contact with the inner wall of the first enclosure, and the top of the worm gear is provided with an internal hexagonal groove.

[0013] Optionally, the second fastening module includes a first telescopic cylinder, a second telescopic cylinder, a transverse stage, a locking component sub-component, a locking component female component, a support, and a first spring;

[0014] The second enclosure is connected to the transverse platform in a flip-out manner;

[0015] The bottom end of the second enclosure is movably connected to the transverse sliding platform, and the top end of the second enclosure is movably connected to the locking component.

[0016] The transverse platform is slidably connected to the first chassis and is driven to move by the second telescopic cylinder;

[0017] One end of the first telescopic cylinder is hinged to the transverse platform, and the other end is fixedly connected to the locking component. The locking component is a hook shape with a notch. The support is fixedly installed on the locking component, and the locking component mother is rotatably installed on the support. One end of the mother is used to close the hook-shaped notch of the locking component, and the other end is fixedly connected to one end of the first spring. The other end of the first spring is fixedly connected to the locking component. The elastic force of the first spring causes the locking component mother to close the hook-shaped notch of the locking component.

[0018] Optionally, the transverse platform bends downward toward the direction away from the second enclosure and has a hollowed-out top to allow the second enclosure to be flipped.

[0019] Optionally, it may also include an internal separation assembly and a lifting assembly;

[0020] The inner separation component is installed on the lifting component and is used to separate the first enclosure from the inner wall of the formed concrete segment.

[0021] The lifting assembly is installed at the bottom of the mounting frame and is used to raise or lower the inner separation assembly.

[0022] Optionally, the internal separation assembly includes a lifting platform, a torsion shaft, a telescopic rod, an electromagnet, a connector, a connector base, and a second spring;

[0023] The telescopic rods are provided in multiple quantities, and the number corresponds to the first enclosure panel;

[0024] The plug-in base is fixedly connected to the inner wall of the first enclosure, and the plug-in base is provided with a plug-in hole;

[0025] One end of the telescopic rod is slidably connected to the lifting platform. The end of the telescopic rod near the lifting platform is provided with a rack portion. The torsion shaft is provided with multiple gear portions on different horizontal planes along the axial direction. The gear portions on the same horizontal plane simultaneously mesh with the rack portions of two opposite telescopic rods. The torsion shaft is rotatably mounted on the lifting platform.

[0026] The other end of the telescopic rod is equipped with an electromagnet, a connector, and a second spring.

[0027] The connector is slidably connected to the telescopic rod, the connector is fixedly connected to one end of the second spring, the other end of the second spring is fixedly connected to the telescopic rod, and the elastic force of the second spring causes the connector to extend.

[0028] The electromagnet is located at the connector and is fixedly connected to the telescopic rod.

[0029] When the electromagnet is energized, the connector retracts against the elastic force of the second spring, and the first enclosure can move in the vertical direction;

[0030] When the electromagnet is de-energized, the connector extends under the elastic force of the second spring and inserts into the connector hole of the connector socket;

[0031] The top end of the torsion shaft has an internal hexagonal groove.

[0032] Optionally, the cross-section of the connector is a regular polygon.

[0033] Optionally, the lifting assembly includes a third telescopic cylinder, a first sliding sleeve, and a second sliding sleeve;

[0034] The first sliding sleeve is fixedly connected to the lifting platform, the first sliding sleeve and the second sliding sleeve are slidably connected, the second sliding sleeve is fixedly connected to the bottom end of the mounting bracket, the fixed end of the third telescopic cylinder is fixedly connected to the second sliding sleeve, the telescopic end of the third telescopic cylinder is fixedly connected to the first sliding sleeve, and the cross-section of the first sliding sleeve and the second sliding sleeve is a regular polygon.

[0035] Optionally, it also includes a vibration assembly for vibrating the concrete;

[0036] The vibration assembly includes a first drive motor, a cam, a third sliding sleeve, a fourth sliding sleeve, and a third chassis;

[0037] The third chassis is telescopically connected to the bottom end of the second chassis, the cam abuts against the lower end of the second chassis, the third sliding sleeve is fixedly connected to the second chassis, the third sliding sleeve is slidably connected to the fourth sliding sleeve, the fourth sliding sleeve is fixedly connected to the third chassis, and the first drive motor is fixedly installed on the third chassis, driving the cam to rotate.

[0038] The method for testing the effect of mold roughness on air bubbles in concrete segment molding includes the following steps:

[0039] Preparation and installation of enclosure panels: First, prepare multiple first and second enclosure panels with different roughnesses. At the same time, energize the electromagnet to retract the connectors and prepare for the installation of the enclosure panels.

[0040] Enclosure hoisting: Hoist the first and third enclosure panels onto the mounting frame in sequence, and hoist the second enclosure panel onto the transverse moving platform located on the first chassis; the third enclosure panel needs to be inserted and installed into the hollow part of the mounting frame, with the first enclosure panel placed inside the third enclosure panel and the second enclosure panel placed outside the third enclosure panel to form a preliminary enclosure structure.

[0041] First enclosure plate locking: By rotating the worm gear, the turbine and the connected first and second gears are driven to rotate, thereby driving the moving seat to move, and the first enclosure plate gradually fits against the third enclosure plate and is pressed tightly;

[0042] Second panel locking: Activate the first telescopic cylinder to rotate the second panel from the inclined state to the vertical state; then, activate the second telescopic cylinder to push the transverse platform to move until the second panel and the third panel are tightly attached and pressed together, completing the locking of the second panel.

[0043] Concrete pouring and vibration: The concrete is poured evenly into the pouring space formed by the first, second and third surrounding plates. The poured concrete is then vibrated to ensure its even distribution and to remove air bubbles.

[0044] Demolding and inspection: Wait for the concrete to set naturally. After the concrete has set completely, separate the first and second enclosure panels in sequence.

[0045] First panel separation: Rotate the worm gear to release the locking pressure of the pressure roller on the first panel. Then, the electromagnet is de-energized, the telescopic rod is connected to the first panel, and the torsion shaft is rotated to separate the first panel from the solidified concrete. Then, start the third telescopic cylinder. The third telescopic cylinder extends to make the lifting platform and the first sliding sleeve rise synchronously, thereby moving the first panel upward and exposing the inner side of the solidified concrete, which is convenient for the first detection device to monitor and record.

[0046] Second enclosure separation: Activate the second telescopic cylinder, the horizontal moving platform moves, and the second enclosure separates from the solidified concrete. Then activate the first telescopic cylinder, and the second enclosure flips over to expose the outside of the solidified concrete, which is convenient for the second detection device to monitor and record.

[0047] Subsequently, the first and second detection devices were activated to comprehensively monitor the inner and outer surfaces of the formed segments in order to evaluate the impact of mold roughness on air bubbles in the concrete segments.

[0048] Lifting the solidified concrete: Lift the third enclosure plate to remove the solidified concrete from the mounting frame; then, reinstall the new third enclosure plate; then, start the second drive motor to rotate the first chassis relative to the second chassis. The rotation of the first chassis drives the second enclosure plate to rotate synchronously, so that the second enclosure plate after rotation is aligned with the first enclosure plate. Then, the third telescopic cylinder retracts. After the third telescopic cylinder has retracted completely, the electromagnet is energized. Then, repeat the steps of locking the first enclosure plate, locking the second enclosure plate, pouring and vibrating concrete, demolding and testing, and recording data. Then, lift the solidified concrete again, insert the new third enclosure plate, start the second drive motor to rotate the first chassis relative to the second chassis, so that the second enclosure plate after rotation is aligned with the first enclosure plate again. Then, repeat the steps of locking the first enclosure plate, locking the second enclosure plate, pouring and vibrating concrete, demolding and testing, and lifting the solidified concrete. The first and second testing devices record the inner and outer surface conditions of the concrete each time it is formed.

[0049] As described above, the present invention has the following beneficial effects:

[0050] 1. During the molding process of segmented concrete, the inner and outer surfaces occupy a large surface area, making them prone to defects, especially air bubbles. This experimental device, with its detachably connected first, second, and third enclosures, along with corresponding first and second fastening modules, offers high flexibility. This design facilitates quick adjustment or replacement of the enclosures according to experimental needs, and also simplifies cleaning and maintenance. By installing the first and second detection devices to monitor the inner and outer surfaces of the formed segments, the impact of mold roughness on air bubbles in the concrete segments can be comprehensively and accurately assessed. This dual detection mechanism helps improve the accuracy and reliability of the experiment. The open-top pouring space formed by the first, second, and third enclosures facilitates concrete pouring and vibration. Through its integrated design and efficient detection methods, this experimental device can significantly shorten the experimental cycle and improve efficiency. Furthermore, its high repeatability and accuracy provide strong technical support for the production of concrete segments.

[0051] 2. During the molding of tubular concrete segments, the bending radius differs between the inner and outer sides. To investigate the impact of differences in the roughness of the inner and outer molds on the molding effect, this application utilizes detachable first and second enclosures. Different roughnesses can be used according to experimental needs, allowing researchers to easily adjust the mold composition and systematically study the influence of different mold roughnesses on air bubbles during the concrete segment molding process. In practice, researchers can select enclosures with specific roughnesses to create mold environments with different surface properties. This allows researchers to more intuitively observe the molding effect of concrete segments under different roughness conditions, particularly the distribution and morphological changes of air bubbles. This contributes to a deeper understanding of the air bubble formation mechanism during concrete segment molding and provides strong experimental evidence for optimizing mold design and improving concrete segment quality. This provides an efficient and convenient experimental method for studying the influence of different mold roughnesses on air bubbles during concrete segment molding, which is of great significance for promoting the development and application of concrete segment molding technology. Attached Figure Description

[0052] Figure 1 The diagram shown is a schematic representation of the overall structure of the present invention.

[0053] Figure 2 The diagram shows the position and structure of the mounting bracket 1 in this invention.

[0054] Figure 3 The diagram shown is a structural schematic of the vibration component in this invention.

[0055] Figure 4 The diagram shows the positional structure of the first detection device 7 and the second detection device 8 in this invention.

[0056] Figure 5 The diagram shown is a partially enlarged view of the structure at T-shaped part 501 in this invention.

[0057] Figure 6 The diagram shown is an exploded view of the internal separation component 9 in this invention.

[0058] Figure 7 The diagram shown is a structural schematic of the first fastening module 5 in this invention.

[0059] Figure 8 The diagram shown is a structural schematic of the second fastening module 6 in this invention.

[0060] Figure 9 This is shown as being in the present invention. Figure 8 A magnified structural diagram at point A.

[0061] Figure 10 The diagram shown is a structural schematic of the second enclosure 3 in this invention.

[0062] Figure 11 The diagram shown is a structural schematic of the transverse stage 603 in this invention.

[0063] Figure 12 The diagram shown is a structural schematic of the internal separation component 9 in this invention.

[0064] Figure 13 The diagram shown is a structural schematic of the first enclosure 2 in this invention.

[0065] Figure 14 The diagram shown is a structural schematic of the third enclosure plate 4 in this invention.

[0066] Component designation explanation

[0067] The components include: mounting bracket 1, hollow section 101, first enclosure 2, second enclosure 3, third enclosure 4, first fastening module 5, T-shaped component 501, worm gear 502, turbine 503, moving seat 504, guide rod 505, threaded rod 506, pressure roller 507, first gear 508, second gear 509, second fastening module 6, first telescopic cylinder 601, second telescopic cylinder 602, transverse moving table 603, locking component sub-component 604, locking component female component 605, and support 606. 607 First spring, 7 First detection device, 8 Second detection device, 9 Internal separation assembly, 901 Lifting platform, 902 Torsion shaft, 903 Telescopic rod, 904 Electromagnet, 905 Connector, 906 Connector seat, 10 Third telescopic cylinder, 11 First sliding sleeve, 12 Second sliding sleeve, 13 First drive motor, 14 Cam, 15 Third sliding sleeve, 16 Fourth sliding sleeve, 17 Third chassis, 18 Second drive motor, 19 First chassis, 20 Second chassis. Detailed Implementation

[0068] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0069] Please see Figures 1 to 14 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0070] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0071] Please see Figures 1-14 The present invention provides a test device for the effect of mold roughness on air bubbles in concrete pipe segment molding, including a mounting frame 1, a first enclosure plate 2, a second enclosure plate 3, a third enclosure plate 4, a first fastening module 5, a second fastening module 6, a first detection device 7, a second detection device 8, a first chassis 19, and a second chassis 20.

[0072] The mounting frame 1 has multiple perforated sections 101 arranged circumferentially on its side wall. The first surrounding plate 2 and the second surrounding plate 3 are arc-shaped, and the third surrounding plate 4 has a U-shaped cross-section. The first surrounding plate 2, the second surrounding plate 3, and the third surrounding plate 4 together form a casting space with an open top. The first surrounding plate 2, the second surrounding plate 3, and the third surrounding plate 4 are detachably connected to the perforated sections 101. In this embodiment, the structure of the first surrounding plate 2, the second surrounding plate 3, and the third surrounding plate 4 are described in detail below. Figure 12 , Figure 9 and Figure 13 To facilitate the transfer of the first enclosure 2, the second enclosure 3, and the third enclosure 4, lifting rings are provided on each enclosure for easy hoisting and transfer. Sealing strips are also provided on the left and right sides of the third enclosure 4 to better fit with the first enclosure 2 and the second enclosure 3. Semi-cylindrical protrusions are also provided on the front and rear sides of the third enclosure 4. Semi-cylindrical grooves matching the semi-cylindrical protrusions are provided on the side wall of the mounting frame 1. Through the cooperation of the semi-cylindrical protrusions and the semi-cylindrical grooves, the third enclosure 4 can be quickly inserted into the hollow part 101 of the mounting frame 1. Anti-tilting grooves are also provided on the opposite left and right sides inside the third enclosure 4. During concrete pouring, concrete will also flow through the anti-tilting grooves and connect with the pouring space of the segment. After the concrete solidifies, a protrusion will be formed at the position of the anti-tilting groove. The purpose of this design is to prevent the concrete from detaching from the third enclosure 4 when it is hoisted away.

[0073] The first enclosure 2 and the second enclosure 3 are located on both sides of the third enclosure 4. The first fastening module 5 is connected to the side wall of the mounting frame 1 to press and fasten the first enclosure 2 and the third enclosure 4. The second fastening module 6 is connected to the first chassis 19 to press and fasten the second enclosure 3 and the third enclosure 4.

[0074] The bottom end of the mounting bracket 1 passes through the first chassis 19 and is fixedly connected to the second chassis 20. The first chassis 19 can rotate relative to the second chassis 20. The first chassis 19 is driven to rotate by the second drive motor 18 fixedly installed on the second chassis 20. The first detection device 7 is fixedly installed on the bottom end of the mounting bracket 1. The first detection device 7 monitors the inner surface of the tube segment after it is formed. The second detection device 8 is fixedly installed on the first chassis 19. The second detection device 8 monitors the outer surface of the tube segment after it is formed.

[0075] During the molding process of segmented concrete, the inner and outer surfaces occupy a large surface area, making them prone to defects, especially air bubbles. The thickness of the segmented concrete was uniform in this study. The experimental setup features detachably connected first, second, and third enclosure plates 2, 3, and 4, along with corresponding first and second fastening modules 5 and 6, providing high flexibility. This design facilitates quick adjustment or replacement of the enclosure plates according to experimental needs, and also simplifies cleaning and maintenance. By installing first and second detection devices 7 and 8, the inner and outer surfaces of the formed segments are monitored, allowing for a comprehensive and accurate assessment of the impact of mold roughness on air bubbles during concrete segment molding. This dual detection mechanism enhances the accuracy and reliability of the experiment. The open-top pouring space formed by the enclosure plates 2, 3, and 4 facilitates concrete pouring and vibration. Through its integrated design and efficient detection methods, this experimental setup significantly shortens the experimental cycle and improves efficiency. Meanwhile, due to the high repeatability and accuracy of the device, it can also provide strong technical support for the production of concrete segments.

[0076] During the molding of tubular concrete segments, the segments have varying bending radii, with the inner and outer radii differing. To investigate the impact of differences in the roughness of the inner and outer molds on the molding effect, this application utilizes a detachable first and second enclosure plate 2 and 3. Different roughnesses can be used according to experimental needs, allowing researchers to easily adjust the mold composition and systematically study the influence of different mold roughnesses on air bubbles during the concrete segment molding process. In practice, researchers can select enclosure plates with specific roughnesses to create mold environments with different surface properties based on experimental objectives. This allows researchers to more intuitively observe the molding effect of concrete segments under different roughness conditions, particularly the distribution and morphological changes of air bubbles. This contributes to a deeper understanding of the air bubble formation mechanism during concrete segment molding and provides strong experimental evidence for optimizing mold design and improving concrete segment quality. This application provides an efficient and convenient experimental method for studying the influence of different mold roughnesses on air bubbles during concrete segment molding, which is of great significance for promoting the development and application of concrete segment molding technology.

[0077] In this embodiment, the first detection device 7 and the second detection device 8 include a three-dimensional laser scanner and a camera. The three-dimensional laser scanner and camera can obtain the true morphological data of the concrete surface. Combined with digital image technology and image analysis software, relevant parameters of air bubbles on the surface of the segment concrete can be obtained for subsequent research. In this embodiment, the first enclosure 2, the second enclosure 3, and the third enclosure 4 are correspondingly set, specifically four sets in this example. During the research, the four first enclosures 2 are set with four different roughnesses, and the four second enclosures 3 are set with four different roughnesses. The different roughnesses of the mold can be obtained by designing the surface with a tungsten carbide coating or by polishing the surface. The surface roughness of the tungsten carbide coating can be 0.8μm, 1.6μm, 2.4μm, or 3.2μm respectively; the surface roughness of the polished surface can be 0.8μm, 1.6μm, 2.4μm, or 3.2μm respectively. The second enclosure 3 can rotate, thereby changing the correspondence between the first enclosure 2 and the second enclosure 3, enabling rapid... This study investigates the impact of different surface roughnesses (e.g., the same roughness of the first enclosure 2 and the second enclosure 3) on air bubbles on the concrete segment surface, thereby determining the optimal mold roughness and its range of variation. In actual production, the inner and outer surfaces can be ground based on these findings to achieve the best molding effect for the concrete segment. Furthermore, this application also includes a rotating wheel (not shown in the diagram) installed at the bottom of the third chassis 17. The rotating wheel facilitates easy transport, allowing for rapid transport to the curing area after the concrete has solidified and been demolded. Concrete curing can employ standard curing or steam curing. Since liquid or steam is required during curing, all electrical devices in this application are waterproof.

[0078] In this embodiment, as Figure 1 and Figure 7 The first fastening module 5 includes a T-shaped part 501, a worm gear 502, a turbine 503, a movable seat 504, a guide rod 505, a threaded rod 506, a pressure roller 507, a first gear 508, and a second gear 509.

[0079] The T-shaped part 501 has a hollow inner cavity. The T-shaped part 501 is fixedly connected to the side wall of the mounting bracket 1. The worm gear 502 is vertically rotatably mounted on the T-shaped part 501. The turbine gear 503 is horizontally rotatably mounted on the T-shaped part 501. The turbine gear 503 meshes with the worm gear 502. The first gear 508 is fixedly connected to the turbine gear 503 and is coaxial. The first gear 508 meshes with the second gear 509. The second gear 509 is rotatably mounted on the T-shaped part 501 and is axially penetrating.

[0080] One side of the movable seat 504 is fixedly connected to the guide rod 505 and the threaded rod 506, while the other side is rotatably mounted with a pressure roller 507. The guide rod 505 is slidably connected to the T-shaped piece 501, the threaded rod 506 is threadedly connected to the second gear 509, and the pressure roller 507 is in contact with the inner wall of the first enclosure plate 2. The top of the worm gear 502 has an internal hexagonal groove. In this embodiment, during use, a manual hexagonal wrench or an electric wrench can be inserted into the internal hexagonal groove at the top of the worm gear 502 to quickly adjust the movement of the movable seat 504. The worm gear 502 and the turbine 503 can be selected as having a self-locking structure. The worm gear 502 drives the turbine 503 to rotate in one direction, while the turbine 503 cannot make the worm gear 502 rotate. This design ensures that the movable seat 504 will not easily loosen after pressing against the first enclosure plate 2, thus guaranteeing the reliability of the concrete connection during pouring. In this embodiment, multiple sets of turbine 503, movable seat 504, guide rod 505, threaded rod 506, pressure roller 507, first gear 508 and second gear 509 are arranged axially, which can form a better pressing effect on the first enclosure 2. During installation, after the first enclosure 2 is completely placed into the gap formed between the T-shaped piece 501 and the side wall of the mounting frame 1, the worm gear 502 is rotated to press the placed first enclosure 2.

[0081] In this embodiment, as Figure 1 , Figure 8 and Figure 9 The second fastening module 6 includes a first telescopic cylinder 601, a second telescopic cylinder 602, a transverse platform 603, a locking component sub-component 604, a locking component female component 605, a support 606, and a first spring 607.

[0082] The second enclosure 3 is connected to the transverse sliding table 603 in a flip-out manner;

[0083] The bottom end of the second enclosure plate 3 is movably connected to the transverse sliding platform 603, such as... Figure 10 The top of the hinge seat on the left side of the transverse platform 603 is open, which facilitates the installation of the second enclosure 3. The top of the second enclosure 3 is movably connected to the locking component 604.

[0084] The transverse platform 603 is slidably connected to the first chassis 19 and is driven to move by the second telescopic cylinder 602; the fixed end of the second telescopic cylinder 602 is fixedly connected to the transverse platform 603, and the telescopic end of the second telescopic cylinder 602 is fixedly connected to the first chassis 19.

[0085] One end of the first telescopic cylinder 601 is hinged to the transverse platform 603, and the other end is fixedly connected to the locking component sub-component 604. The locking component sub-component 604 is hook-shaped with a notch. The support 606 is fixedly installed on the locking component sub-component 604, and the locking component mother 605 is rotatably installed on the support 606. One end of the mother 605 is used to close the hook-shaped notch of the locking component sub-component 604, and the other end is fixedly connected to one end of the first spring 607. The other end of the first spring 607 is fixedly connected to the locking component sub-component 604. The elastic force of the first spring 607 causes the locking component mother 605 to close the hook-shaped notch of the locking component sub-component 604. In this embodiment, when the second enclosure plate 3 is placed on the transverse platform 603, during installation, the bottom end of the second enclosure plate 3 is first snapped onto the left hinge seat of the transverse platform 603, and then the locking component mother 605 is pressed to make the top end of the second enclosure plate 3 snap into place, thereby completing the connection. In this embodiment, this design facilitates the quick placement and replacement of the second enclosure 3. After the second enclosure 3 is installed, the extension distance of the first telescopic cylinder 601 and the second telescopic cylinder 602 is adjusted so that the second enclosure 3 and the third enclosure 4 can fit tightly together, preventing concrete from seeping out during pouring.

[0086] In this embodiment, the transverse platform 603 bends downward in a direction away from the second enclosure 3, and has a hollowed-out top to allow the second enclosure 3 to be flipped. In this embodiment, the hollowed-out top of the transverse platform 603 facilitates the accommodation of the arched portion of the second enclosure 3, while also reducing the amount of material used in the transverse platform 603.

[0087] In this embodiment, as Figure 6 It also includes the internal separation component 9 and the lifting component;

[0088] The inner separation component 9 is installed on the lifting component to separate the first enclosure 2 from the inner wall of the formed concrete segment;

[0089] A lifting assembly is installed at the bottom of the mounting frame 1 to raise or lower the inner separation assembly 9. In this embodiment, the inner separation assembly 9 is provided to facilitate the separation of the first enclosure 2 from the formed concrete; the lifting assembly is provided to facilitate the raising of the first enclosure 2 so that the first detection device 7 can detect the inner surface of the concrete.

[0090] In this embodiment, as Figure 6 and Figure 12 The internal separation component 9 includes a lifting platform 901, a torsion shaft 902, a telescopic rod 903, an electromagnet 904, a connector 905, a connector base 906, and a second spring.

[0091] Multiple telescopic rods 903 are provided, and their number corresponds to that of the first enclosure panel 2;

[0092] The plug-in socket 906 is fixedly connected to the inner wall of the first enclosure 2, and the plug-in socket 906 has a plug-in hole;

[0093] One end of the telescopic rod 903 is slidably connected to the lifting platform 901. The end of the telescopic rod 903 near the lifting platform 901 is provided with a rack portion. The torsion shaft 902 is provided with multiple gear portions on different horizontal planes along the axial direction. The gear portions on the same horizontal plane simultaneously mesh with the rack portions of two opposite telescopic rods 903. The torsion shaft 902 is rotatably mounted on the lifting platform 901.

[0094] The other end of the telescopic rod 903 is equipped with an electromagnet 904, a connector 905, and a second spring.

[0095] The connector 905 is slidably connected to the telescopic rod 903, the connector 905 is fixedly connected to one end of the second spring, and the other end of the second spring is fixedly connected to the telescopic rod 903. The elastic force of the second spring causes the connector 905 to extend.

[0096] Electromagnet 904 is located at connector 905 and is fixedly connected to telescopic rod 903;

[0097] When the electromagnet 904 is energized, the connector 905 retracts against the elastic force of the second spring, and the first enclosure 2 can move in the vertical direction.

[0098] When the electromagnet 904 is de-energized, the connector 905 extends under the elastic force of the second spring and inserts into the connector hole of the connector 906.

[0099] The top end of the torsion shaft 902 has an inner hexagonal groove. In this embodiment, after the concrete has solidified, the electromagnet 904 is de-energized, the connector 905 is inserted into the connector 906, and then the torsion shaft 902 is rotated to separate the first enclosure 2 from the solidified concrete. Then, the third telescopic cylinder 10 is activated to extend the third telescopic cylinder 10, thereby raising the first enclosure 2 so that the first enclosure 2 does not cover the inner side of the concrete, making it easier for the first detection device 7 to detect.

[0100] In this embodiment, the cross-section of the connector 905 is a regular polygon. In this example, the cross-section of the connector 905 is a regular polygon, which is a regular hexagon. The use of a regular hexagonal connector 905 prevents the first enclosure 2 from rotating during rising or falling, thus preventing damage to the inner side of the already formed concrete.

[0101] In this embodiment, as Figure 6 The lifting assembly includes a third telescopic cylinder 10, a first sliding sleeve 11, and a second sliding sleeve 12;

[0102] The first sliding sleeve 11 is fixedly connected to the lifting platform 901, and the first sliding sleeve 11 and the second sliding sleeve 12 are slidably connected. The second sliding sleeve 12 is fixedly connected to the bottom end of the mounting bracket 1. The fixed end of the third telescopic cylinder 10 is fixedly connected to the second sliding sleeve 12, and the telescopic end of the third telescopic cylinder 10 is fixedly connected to the first sliding sleeve 11. The cross-sections of the first sliding sleeve 11 and the second sliding sleeve 12 are regular polygons. In this embodiment, the third telescopic cylinder 10 drives the first sliding sleeve 11 to move relative to the second sliding sleeve 12. The cross-sections of the first sliding sleeve 11 and the second sliding sleeve 12 are regular polygons. The purpose of this design is that when the torsion shaft 902 is rotated, the first sliding sleeve 11 and the second sliding sleeve 12 will not rotate relative to each other.

[0103] In this embodiment, as Figure 3 It also includes a vibration assembly for vibrating concrete;

[0104] The vibration assembly includes a first drive motor 13, a cam 14, a third sliding sleeve 15, a fourth sliding sleeve 16, and a third chassis 17;

[0105] The third chassis 17 is telescopically connected to the bottom end of the second chassis 20. The cam 14 abuts against the lower end of the second chassis 20. The third sliding sleeve 15 is fixedly connected to the second chassis 20. The third sliding sleeve 15 is slidably connected to the fourth sliding sleeve 16. The fourth sliding sleeve 16 is fixedly connected to the third chassis 17. The first drive motor 13 is fixedly installed on the third chassis 17 and drives the cam 14 to rotate. In this embodiment, the rotation of the first drive motor 13 drives the cam 14 to rotate, thereby causing the third sliding sleeve 15 to slide relative to the fourth sliding sleeve 16, thus creating an undulating effect on the second chassis 20, which vibrates and evens out the poured concrete.

[0106] This embodiment also includes a method for testing the effect of mold roughness on air bubbles in concrete segment molding, comprising the following steps:

[0107] Preparation and installation of enclosure panels: First, prepare multiple first enclosure panels 2 and second enclosure panels 3 with different roughnesses. At the same time, energize the electromagnet 904 and retract the connector 905 to prepare for the installation of the enclosure panels.

[0108] Enclosure hoisting: The first enclosure 2 and the third enclosure 4 are hoisted sequentially onto the mounting frame 1, and the second enclosure 3 is hoisted onto the transverse moving platform 603 located on the first chassis 19; the third enclosure 4 needs to be inserted and installed into the hollow part 101 of the mounting frame 1, with the first enclosure 2 placed inside the third enclosure 4 and the second enclosure 3 placed outside the third enclosure 4 to form a preliminary enclosure structure; then, a release agent is sprayed on one side of the first enclosure 2, the second enclosure 3 and the third enclosure 4 where concrete is poured to facilitate subsequent demolding;

[0109] First enclosure 2 locking: By rotating the worm gear 502, the turbine 503 and the connected first gear 508 and second gear 509 are driven to rotate, thereby driving the moving seat 504 to move, and the first enclosure 2 gradually fits against the third enclosure 4 and is pressed tightly.

[0110] Locking the second enclosure 3: Activate the first telescopic cylinder 601 to rotate the second enclosure 3 from the inclined state to the vertical state; then, activate the second telescopic cylinder 602 to push the transverse platform 603 to move until the second enclosure 3 and the third enclosure 4 are tightly attached and pressed together, thus completing the locking of the second enclosure 3.

[0111] Concrete pouring and vibration: The concrete is poured evenly into the pouring space formed by the first enclosure 2, the second enclosure 3 and the third enclosure 4. The poured concrete is then vibrated to ensure its even distribution and to remove air bubbles.

[0112] Demolding and inspection: Wait for the concrete to solidify naturally. After the concrete has completely solidified, separate the first enclosure 2 and the second enclosure 3 in sequence.

[0113] First enclosure 2 separation: Electromagnet 904 is de-energized, telescopic rod 903 is connected to first enclosure 2, and torsion shaft 902 is rotated to separate first enclosure 2 from solidified concrete; then third telescopic cylinder 10 is activated, and third telescopic cylinder 10 extends to make lifting platform 901 and first sliding sleeve 11 rise synchronously, thereby making first enclosure 2 move upward and allowing the inner side of solidified concrete to be exposed, which is convenient for monitoring and recording by first detection device 7.

[0114] Second enclosure 3 separation: Activate the second telescopic cylinder 602, the transverse stage 603 moves, causing the second enclosure 3 to separate from the solidified concrete. Then activate the first telescopic cylinder 601, the second enclosure 3 flips over to expose the outside of the solidified concrete, which is convenient for the second detection device 8 to monitor and record.

[0115] Subsequently, the first detection device 7 and the second detection device 8 are turned on to conduct comprehensive monitoring of the inner and outer surfaces of the formed segments in order to evaluate the impact of mold roughness on air bubbles in the concrete segments.

[0116] Lifting the solidified concrete: Lift the third enclosure 4 to detach the solidified concrete from the mounting frame 1; then, re-insert and place the new third enclosure 4. Next, start the second drive motor 18 to rotate the first chassis 19 relative to the second chassis 20. The rotation of the first chassis 19 drives the second enclosure 3 to rotate synchronously, realigning the rotated second enclosure 3 with the first enclosure 2. Then, the third telescopic cylinder 10 retracts. After the third telescopic cylinder 10 has fully retracted, the electromagnet 904 is energized. Then, repeat the locking of the first enclosure 2 and the locking of the second enclosure 3. The concrete pouring and vibration, demolding and testing steps are recorded. Then, the solidified concrete is lifted off again, a new third enclosure plate 4 is placed in, the second drive motor 18 is started, and the first chassis 19 rotates relative to the second chassis 20, so that the second enclosure plate 3 and the first enclosure plate 2 are realigned after the rotation angle. Then, the steps of locking the first enclosure plate 2, locking the second enclosure plate 3, pouring and vibrating concrete, demolding and testing, and lifting off the solidified concrete are repeated. The first testing device 7 and the second testing device 8 record the inner and outer surface conditions of the concrete each time it is formed.

[0117] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An experimental apparatus for testing the effect of mold roughness on air bubbles in concrete segment molding, characterized in that, It includes a mounting frame (1), a first enclosure (2), a second enclosure (3), a third enclosure (4), a first fastening module (5), a second fastening module (6), a first detection device (7), a second detection device (8), a first chassis (19), and a second chassis (20); The mounting bracket (1) has multiple hollow sections (101) arranged in a circumferential array on its side wall. The first enclosure plate (2) and the second enclosure plate (3) are arc-shaped, and the third enclosure plate (4) has a U-shaped cross section. The first enclosure plate (2), the second enclosure plate (3) and the third enclosure plate (4) together form a casting space with an open top. The first enclosure plate (2), the second enclosure plate (3) and the third enclosure plate (4) are detachably connected to the hollow section (101). The first enclosure (2) and the second enclosure (3) are located on both sides of the third enclosure (4). The first fastening module (5) is connected to the side wall of the mounting frame (1) to press and fasten the first enclosure (2) and the third enclosure (4). The second fastening module (6) is connected to the first chassis (19) to press and fasten the second enclosure (3) and the third enclosure (4). The bottom end of the mounting bracket (1) passes through the first chassis (19) and is fixedly connected to the second chassis (20). The first chassis (19) can rotate relative to the second chassis (20). The first chassis (19) is driven to rotate by the second drive motor (18) fixedly installed on the second chassis (20). The first detection device (7) is fixedly installed on the bottom end of the mounting bracket (1). The first detection device (7) monitors the inner surface of the tube segment after it is formed. The second detection device (8) is fixedly installed on the first chassis (19). The second detection device (8) monitors the outer surface of the tube segment after it is formed. The first fastening module (5) includes a T-shaped part (501), a worm gear (502), a turbine (503), a movable seat (504), a guide rod (505), a threaded rod (506), a pressure roller (507), a first gear (508), and a second gear (509); The T-shaped member (501) has a hollow inner cavity. The T-shaped member (501) is fixedly connected to the side wall of the mounting bracket (1). The worm (502) is vertically rotatably mounted on the T-shaped member (501). The turbine (503) is horizontally rotatably mounted on the T-shaped member (501). The turbine (503) meshes with the worm (502). The first gear (508) is fixedly connected to the turbine (503) and coaxial. The first gear (508) meshes with the second gear (509). The second gear (509) is rotatably mounted on the T-shaped member (501). The second gear (509) is axially penetrating. One side of the movable seat (504) is fixedly connected to the guide rod (505) and the threaded rod (506), and the pressure roller (507) is rotatably installed on the other side. The guide rod (505) is slidably connected to the T-shaped piece (501), the threaded rod (506) is threadedly connected to the second gear (509), the pressure roller (507) is in contact with the inner wall of the first enclosure plate (2), and the top end of the worm gear (502) is provided with an internal hexagonal groove. It also includes an internal separation assembly (9) and a lifting assembly; The inner separation component (9) is installed on the lifting component and is used to separate the first enclosure plate (2) from the inner wall of the formed concrete pipe segment; The lifting assembly is installed at the bottom of the mounting frame (1) and is used to raise or lower the inner separation assembly (9); It also includes a vibration assembly for vibrating concrete; The vibration assembly includes a first drive motor (13), a cam (14), a third sliding sleeve (15), a fourth sliding sleeve (16), and a third chassis (17). The third chassis (17) is telescopically connected to the bottom end of the second chassis (20), the cam (14) abuts against the lower end of the second chassis (20), the third sliding sleeve (15) is fixedly connected to the second chassis (20), the third sliding sleeve (15) is slidably connected to the fourth sliding sleeve (16), the fourth sliding sleeve (16) is fixedly connected to the third chassis (17), the first drive motor (13) is fixedly installed on the third chassis (17), and the first drive motor (13) drives the cam (14) to rotate.

2. The experimental apparatus for testing the effect of mold roughness on air bubbles in concrete segment molding according to claim 1, characterized in that, The second fastening module (6) includes a first telescopic cylinder (601), a second telescopic cylinder (602), a transverse table (603), a latching component (604), a latching component (605), a support (606), and a first spring (607). The second enclosure (3) is connected to the transverse stage (603) in a flip-out manner. The bottom end of the second enclosure (3) is movably connected to the transverse sliding platform (603), and the top end of the second enclosure (3) is movably connected to the latching component (604); The transverse platform (603) is slidably connected to the first chassis (19), and the transverse platform (603) is driven to move by the second telescopic cylinder (602); One end of the first telescopic cylinder (601) is hinged to the transverse platform (603), and the other end is fixedly connected to the latching component (604). The latching component (604) is hook-shaped with a notch. The support (606) is fixedly installed on the latching component (604). The latching component mother (605) is rotatably installed on the support (606). One end is used to close the hook-shaped notch of the latching component (604), and the other end is fixedly connected to one end of the first spring (607). The other end of the first spring (607) is fixedly connected to the latching component (604). The elastic force of the first spring (607) causes the latching component mother (605) to close the hook-shaped notch of the latching component (604).

3. The experimental apparatus for testing the effect of mold roughness on air bubbles in concrete segment molding according to claim 2, characterized in that, The transverse platform (603) bends downward toward the direction away from the second enclosure (3) and has a hollowed-out top so that the second enclosure (3) can be flipped.

4. The experimental apparatus for testing the effect of mold roughness on air bubbles in concrete segment molding according to claim 3, characterized in that, The internal separation assembly (9) includes a lifting platform (901), a torsion shaft (902), a telescopic rod (903), an electromagnet (904), a connector (905), a connector seat (906), and a second spring; Multiple telescopic rods (903) are provided, and their number corresponds to that of the first enclosure panel (2); The plug-in socket (906) is fixedly connected to the inner wall of the first enclosure (2), and the plug-in socket (906) is provided with a plug-in hole; One end of the telescopic rod (903) is slidably connected to the lifting platform (901). The telescopic rod (903) has a rack portion at one end near the lifting platform (901). The torsion shaft (902) has multiple gear portions with different horizontal planes along the axial direction. The gear portions on the same horizontal plane mesh with the rack portions of two opposite telescopic rods (903) at the same time. The torsion shaft (902) is rotatably mounted on the lifting platform (901). The other end of the telescopic rod (903) is provided with an electromagnet (904), a connector (905), and a second spring; The connector (905) is slidably connected to the telescopic rod (903), the connector (905) is fixedly connected to one end of the second spring, the other end of the second spring is fixedly connected to the telescopic rod (903), and the elastic force of the second spring causes the connector (905) to extend. The electromagnet (904) is located at the connector (905) and is fixedly connected to the telescopic rod (903); When the electromagnet (904) is energized, the connector (905) retracts against the elastic force of the second spring, and the first enclosure (2) can move in the vertical direction; When the electromagnet (904) is de-energized, the connector (905) extends under the elastic force of the second spring and inserts into the connector hole of the connector (906); The top end of the torsion shaft (902) is provided with an inner hexagonal groove.

5. The experimental apparatus for testing the effect of mold roughness on air bubbles in concrete segment molding according to claim 4, characterized in that, The cross-section of the connector (905) is a regular polygon.

6. The experimental apparatus for testing the effect of mold roughness on air bubbles in concrete segment molding according to claim 5, characterized in that, The lifting assembly includes a third telescopic cylinder (10), a first sliding sleeve (11), and a second sliding sleeve (12). The first sliding sleeve (11) is fixedly connected to the lifting platform (901), the first sliding sleeve (11) and the second sliding sleeve (12) are slidably connected, the second sliding sleeve (12) is fixedly connected to the bottom end of the mounting bracket (1), the fixed end of the third telescopic cylinder (10) is fixedly connected to the second sliding sleeve (12), the telescopic end of the third telescopic cylinder (10) is fixedly connected to the first sliding sleeve (11), and the cross-section of the first sliding sleeve (11) and the second sliding sleeve (12) is a regular polygon.

7. A method for testing the effect of mold roughness on air bubbles in concrete segment molding, comprising the testing apparatus for testing the effect of mold roughness on air bubbles in concrete segment molding as described in claim 6, characterized in that, Includes the following steps: Preparation and installation of enclosure panels: First, prepare multiple first enclosure panels (2) and second enclosure panels (3) with different roughnesses. At the same time, energize the electromagnet (904) and retract the connector (905) to prepare for the installation of the enclosure panels. hoisting of the enclosure: hoist the first enclosure (2) and the third enclosure (4) onto the mounting frame (1) in sequence, and hoist the second enclosure (3) onto the transverse platform (603) located on the first chassis (19); the third enclosure (4) needs to be inserted and installed into the hollow part (101) of the mounting frame (1), the first enclosure (2) is placed inside the third enclosure (4), and the second enclosure (3) is placed outside the third enclosure (4) to form a preliminary enclosure structure; First enclosure (2) locking: By rotating the worm (502), the turbine (503) and the connected first gear (508) and second gear (509) are driven to rotate, thereby driving the moving seat (504) to move, and the first enclosure (2) gradually fits against the third enclosure (4) and is pressed; Locking the second enclosure (3): Activate the first telescopic cylinder (601) to rotate the second enclosure (3) from the inclined state to the vertical state; then, activate the second telescopic cylinder (602) to push the transverse platform (603) to move until the second enclosure (3) and the third enclosure (4) are tightly attached and pressed together, thus completing the locking of the second enclosure (3). Concrete pouring and vibration: The concrete is poured evenly into the pouring space formed by the first enclosure (2), the second enclosure (3) and the third enclosure (4). The poured concrete is then vibrated to ensure that it is evenly distributed and to remove air bubbles. Demolding and inspection: Wait for the concrete to solidify naturally. After the concrete has completely solidified, separate the first enclosure (2) and the second enclosure (3) in sequence. First enclosure (2) separation: Rotate the worm gear (502) to release the locking pressure of the pressure roller (507) on the first enclosure (2). Then, the electromagnet (904) is de-energized, the telescopic rod (903) is connected to the first enclosure (2), and the torsion shaft (902) is rotated to separate the first enclosure (2) from the solidified concrete. Then, start the third telescopic cylinder (10). The third telescopic cylinder (10) extends to make the lifting platform (901) and the first sliding sleeve (11) rise synchronously, so that the first enclosure (2) moves upward and the inner side of the solidified concrete is exposed, which is convenient for the first detection device (7) to monitor and record. Separation of the second enclosure (3): Start the second telescopic cylinder (602), move the transverse stage (603) to separate the second enclosure (3) from the solidified concrete, then start the first telescopic cylinder (601), flip the second enclosure (3) to expose the outside of the solidified concrete, so that the second detection device (8) can monitor and record. Subsequently, the first detection device (7) and the second detection device (8) are opened to comprehensively monitor the inner and outer surfaces of the formed pipe segment in order to evaluate the influence of mold roughness on the air bubbles in the concrete pipe segment forming; the solidified concrete is lifted off: the third enclosure plate (4) is lifted off so that the solidified concrete is removed from the mounting frame (1); then, the new third enclosure plate (4) is re-inserted and placed in, and then the second drive motor (18) is started so that the first chassis (19) rotates relative to the second chassis (20). The rotation of the first chassis (19) drives the second enclosure plate (3) to rotate synchronously, so that the second enclosure plate (3) after the rotation angle is realigned with the first enclosure plate (2). Then, the third telescopic cylinder (10) retracts. After the third telescopic cylinder (10) has retracted, When the electromagnet (904) is energized, the steps of locking the first enclosure (2), locking the second enclosure (3), pouring and vibrating concrete, demolding and testing are repeated, and the data is recorded. Then, the solidified concrete is lifted off again, and a new third enclosure (4) is placed in. The second drive motor (18) is started, so that the first chassis (19) rotates relative to the second chassis (20), and the second enclosure (3) after the rotation angle is realigned with the first enclosure (2). Then, the steps of locking the first enclosure (2), locking the second enclosure (3), pouring and vibrating concrete, demolding and testing, and lifting off the solidified concrete are repeated. The first testing device (7) and the second testing device (8) record the inner and outer surface conditions of each concrete forming.

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