Assembly type prefabricated pavement slab mold

Abstract

An assembly type prefabricated pavement slab mold comprises a flexible bottom mold, side molds and a jacking system, the flexible bottom mold comprises rigid bodies and elastic bodies covering and adhering to the rigid bodies, gaps are reserved between the rigid bodies, the jacking system comprises a jacking platform, a jacking driving piece and a jacking block, the jacking driving piece is installed on the jacking platform, and the jacking block is installed on the jacking platform. The jacking block extends into the gap from bottom to top, the top of the jacking block abuts against the bottom of the elastic body, and the jacking block can move up and down under the action of the jacking driving piece. The jacking block of the assembly type prefabricated pavement slab mold extends into the gap between the rigid bodies from bottom to top, the top of the jacking block abuts against the bottom of the elastic body, the elastic body has high flexibility, the shape of the elastic body can be changed along with lifting of the bottom jacking block, and the assembly type prefabricated pavement slab mold can be suitable for prefabricated slabs of different sizes and different bottom shapes and meet the use requirements of different working conditions; therefore, the application range of the mold is expanded, the manufacturing cost of the product is reduced, and meanwhile, the standardization and serialization of the mold are favorable for realizing the comprehensive quality control in the production process.

Description

Technical Field

[0001] This utility model relates to the field of pavement construction and maintenance technology, and in particular to a prefabricated pavement panel mold. Background Technology

[0002] With the development of civil aviation, airport pavement slabs have suffered severe damage due to natural and external environmental factors, such as kerosene penetration and airport loads. This damage manifests as slab breakage, pitting, joint damage, and potholes, leading to a decrease in structural load-bearing capacity and overall performance. 2. Furthermore, with the development of civil aviation, existing airport design standards can no longer meet the heavy load requirements of large aircraft.

[0003] Currently, large-scale repairs of airport concrete pavements involve replacing the existing slabs and adding a thick layer of cement or asphalt concrete overlay to increase the load-bearing capacity—a process often referred to as "covering." However, under the requirement of uninterrupted operation, work time is limited, the hardening and setting time of newly cast slabs is long, and the curing period is also extended. The construction process involves mixing and transporting concrete at a mixing plant, and the wet work on-site can easily cause site pollution. Precast slabs have been used for airport pavement repair and renovation in China, but this method has several drawbacks: firstly, it requires a large off-site prefabrication site; secondly, transportation is difficult and costly, requiring specialized vehicles and roads; and thirdly, on-site excavation of the entire thickness results in severe pollution and a large amount of waste. To minimize disruption to normal daytime airport operations and achieve rapid installation of large-area precast slabs, a rapidly replaceable prefabricated slab is needed. This slab should possess high strength, low porosity, good water tightness, and high bonding strength with concrete, effectively solving the above problems and enabling rapid, uninterrupted airport pavement repairs. With the emergence of prefabricated pavement slabs, the urgent task has become how to quickly and mass-produce them. Currently, ordinary molds on the market are not only bulky, but also cannot be adjusted according to diverse design requirements. This often requires multiple molds to accommodate products of different sizes, thereby increasing manufacturing costs and wasting resources. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide, in view of the above-mentioned existing technology, an equipment for manufacturing prefabricated pavement panels that can realize standardized mass production and intelligent assembly line manufacturing of prefabricated pavement panels.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a prefabricated pavement panel mold, characterized in that: it includes a flexible bottom mold, a side mold and a lifting system, the flexible bottom mold includes a rigid body and an elastic body covered and bonded to the rigid body, with gaps left between the rigid bodies, the lifting system includes a lifting platform, a lifting drive component and a lifting block, the lifting drive component is installed on the lifting platform, the lifting block extends from bottom to top into the gap and its top abuts against the bottom of the elastic body, and the lifting block can move up and down under the action of the lifting drive component.

[0006] In order to fix the lifting block to the bottom of the elastomer, preferably, the top of the lifting block is bonded and fixed to the bottom of the elastomer.

[0007] To prevent the material used to make the precast paving slab from flowing out of the gap between the side mold and the elastomer during the precasting process, preferably, the side mold presses down on the elastomer.

[0008] The lifting drive component can have various driving methods. Preferably, the lifting drive component is a lifting hydraulic cylinder.

[0009] In order to vibrate the precast paving slabs in real time and ensure the density of the product, the jacking system also includes a vibrator installed below the jacking platform.

[0010] More preferably, the lifting blocks are distributed at intervals along the lifting platform.

[0011] In order to intelligently adjust the height of various concave and convex shapes on the mold, it also includes an intelligent adjustment system that can intelligently adjust the lifting height of the lifting block according to different precast slabs.

[0012] The intelligent adjustment system can have various structures. Preferably, the intelligent adjustment system includes a lifting displacement sensor and a controller. The lifting displacement sensor outputs a signal indicating the vertical movement distance of the lifting block, and the controller controls the vertical movement distance of the lifting block accordingly based on the received output signal from the lifting displacement sensor. With this configuration, the lifting displacement sensor can determine the height of the lifting block, thereby ensuring the dimensional accuracy of the precast slab's concave-convex structure. Before precasting, the controller inputs the precast slab's dimensional parameters, and combined with real-time data feedback from the lifting displacement sensor, controls the vertical movement distance of the lifting block via the lifting cylinder, thus automatically adjusting the height of the mold's concave-convex shape.

[0013] To create an automatic sealing structure on the mold, preferably, an opening is provided on the inner side of the side mold for inserting the laterally exposed reinforcing bars of the precast slab. An elastic sealing element is filled within this opening, encasing the laterally exposed reinforcing bars. With this configuration, after the reinforcing mesh is placed into the mold, the elastic sealing element automatically wraps around the reinforcing bars, achieving a sealing effect.

[0014] Compared with the prior art, the advantages of this utility model are as follows: the lifting block of the prefabricated pavement panel mold extends from bottom to top into the gap between the rigid bodies and the top of the lifting block abuts against the bottom of the elastic body. The elastic body has high flexibility and can change shape with the lifting block at the bottom. It can be used for prefabricated panels of different sizes and bottom shapes to meet the usage requirements of different working conditions, thereby expanding the applicability of the mold and reducing the manufacturing cost of the product. At the same time, the standardization and serialization of the mold helps to achieve comprehensive quality control in the production process. Attached Figure Description

[0015] Figure 1 This is a convex effect diagram of the mold according to an embodiment of the present utility model;

[0016] Figure 2 This is a diagram illustrating the concave shape of the mold according to an embodiment of the present invention.

[0017] Figure 3 These are schematic diagrams showing different concave and convex cross-sections of the mold according to embodiments of this utility model;

[0018] Figure 4 This is a partial sectional view of the mold in an embodiment of the present invention.

[0019] Figure 5 This is a partial frontal sectional view of the mold according to an embodiment of the present utility model;

[0020] Figure 6 This is a structural diagram of the side formwork before the reinforcement bars are placed, according to an embodiment of this utility model.

[0021] Figure 7 This is a schematic diagram of the structure after the side formwork reinforcement is installed according to an embodiment of the present utility model. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 5As shown, the prefabricated pavement panel mold of this embodiment includes a flexible bottom mold 1, side molds 2, a lifting system 3, and an intelligent adjustment system. The flexible bottom mold 1 includes a rigid body 11 and an elastic body 12 covering and bonded to the rigid body 11. A gap 13 is left between the rigid bodies 11. The side mold 2 presses down on the elastic body 12 to prevent material from flowing out through the gap between the side mold 2 and the elastic body 12 during the prefabrication of the pavement panel. The lifting system 3 includes a lifting platform 31, a lifting drive component 32, a lifting block 33, and a vibrator 34. The lifting drive component 32 is mounted on the lifting platform 31. In this embodiment, the lifting drive component 32 is a lifting cylinder; other drive components can also be used besides a lifting cylinder. Lifting blocks 33 are spaced apart along the lifting platform 31. Each lifting block 33 extends upwards into the gap 13, with its top abutting against the bottom of the elastic body 12. In this embodiment, the top of the lifting block 33 is bonded and fixed to the bottom of the elastic body 12. The vibrator 34 is installed below the lifting platform 31. When the lifting system 3 is working, the lifting blocks 33 move up and down under the action of the lifting drive component 32 to adjust their height, allowing the elastic body 12 to be set into different concave and convex shapes according to product requirements. The vibrator 34 can vibrate the precast pavement panel in real time to ensure the compactness of the product.

[0024] After the precast slab solidifies, the lifting block 33 descends, causing the elastomer 12 to detach from the precast slab, thus completing demolding. If assisted demolding is required, the lifting block 33 can continue to lift upwards, causing the precast slab to detach from the mold surface, achieving the effect of rapid demolding of the precast slab.

[0025] The intelligent control system in this embodiment consists of a lifting displacement sensor 4 and a controller. The intelligent control system is responsible for controlling the automatic actions related to the mold. It can adjust the shape and size of the concave and convex structure at the bottom of the mold according to the set prefabricated track panel information, including mold bottom concave and convex shape control, mold self-vibration control, demolding control, etc.

[0026] The lifting displacement sensor 4 outputs a signal indicating the vertical movement distance of the lifting block 33. The controller, based on the received output signal from the lifting displacement sensor 4, controls the vertical movement distance of the lifting block 33 accordingly, thus automatically adjusting the height of the mold's convex and concave shapes for different precast track panels. The lifting displacement sensor 4 is mounted on the lifting platform 31 and provides feedback on the height of the lifting block 33. Before precasting, the controller inputs the precast track panel dimensions and, combined with the real-time data feedback from the lifting displacement sensor 4, controls the vertical movement distance of the lifting block 33 via the lifting cylinder. This achieves automatic adjustment of the mold's convex and concave shape height, automatically and precisely controlling the dimensions of the convex and concave shapes, and realizing automatic and flexible adjustment of the convex and concave structure. When the lifting block 33 rises, it forms a convex mold cavity; when it descends, it forms a concave mold cavity.

[0027] like Figure 6 and Figure 7 As shown, when exposed steel mesh is preferred for precast pavement panels, an automatic sealing structure for the steel mesh needs to be installed on the mold. An opening is made on the inner side of the side mold 2 for inserting the lateral exposed steel bars 5 of the precast pavement panel. Before placing the steel mesh, the opening is first filled with an elastic sealing element 6, leaving space for the steel bars. Then, the steel mesh is placed into the mold, and the elastic sealing element 6 automatically wraps around the steel bars 5, achieving a seal. The advantages of this structure are good sealing performance, fast operation, and reusable sealing material.

[0028] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A modular precast pavement panel mold, characterized by: The flexible bottom die (1) comprises rigid bodies (11) and elastic bodies (12) bonded on the rigid bodies (11), and gaps (13) are left between the rigid bodies (11); the jacking system (3) comprises a jacking platform (31), a jacking drive (32) and a jacking block (33), the jacking drive (32) is installed on the jacking platform (31), and the jacking block (33) extends into the gap (13) from bottom to top and abuts against the bottom of the elastic body (12), and the jacking block (33) can move up and down under the action of the jacking drive (32).

2. The prefabricated panel mold according to claim 1, wherein: The top of the jacking block (33) is bonded and fixed with the bottom of the elastic body (12).

3. The prefabricated panel mold according to claim 1, wherein: The side die (2) presses the elastic body (12).

4. The prefabricated panel mold according to claim 1, wherein: The jacking drive (32) is a jacking oil cylinder.

5. The prefabricated panel mold according to claim 1, wherein: The jacking system (3) further comprises a vibrator (34) installed below the jacking platform (31).

6. The prefabricated panel for a paved road according to claim 1, characterized in that: The jacking blocks (33) are distributed at intervals along the jacking platform (31).

7. The prefabricated panel mold according to any one of claims 1 to 6, wherein: Further comprising an intelligent adjusting system capable of intelligently adjusting the lifting height of the jacking blocks (33) according to different precast slabs.

8. The prefabricated panel mold according to claim 7, wherein: The intelligent adjusting system comprises a jacking displacement sensor (4) and a controller, the jacking displacement sensor (4) can output an output signal of the up-and-down moving distance of the jacking block (33), and the controller controls the up-and-down moving distance of the jacking block (33) according to the received output signal of the jacking displacement sensor (4).

9. The prefabricated panel mold according to claim 1, wherein: An opening is formed in the inner side of the side die (2) for the lateral exposed reinforcing bars (5) of the precast slab, and an elastic sealing member (6) is filled in the opening, and the elastic sealing member (6) wraps the lateral exposed reinforcing bars (5). The flexible bottom die (1) comprises rigid bodies (11) and elastic bodies (12) bonded on the rigid bodies (11), and gaps (13) are left between the rigid bodies (11); the jacking system (3) comprises a jacking platform (31), a jacking drive (32) and a jacking block (33), the jacking drive (32) is installed on the jacking platform (31), and the jacking block (33) extends into the gap (13) from bottom to top and abuts against the bottom of the elastic body (12), and the jacking block (33) can move up and down under the action of the jacking drive (32). The top of the jacking block (33) is bonded and fixed with the bottom of the elastic body (12). The side die (2) presses the elastic body (12). The jacking drive (32) is a jacking oil cylinder. The jacking system (3) further comprises a vibrator (34) installed below the jacking platform (31). The jacking blocks (33) are distributed at intervals along the jacking platform (31). Further comprising an intelligent adjusting system capable of intelligently adjusting the lifting height of the jacking blocks (33) according to different precast slabs. The intelligent adjusting system comprises a jacking displacement sensor (4) and a controller, the jacking displacement sensor (4) can output an output signal of the up-and-down moving distance of the jacking block (33), and the controller controls the up-and-down moving distance of the jacking block (33) according to the received output signal of the jacking displacement sensor (4). An opening is formed in the inner side of the side die (2) for the lateral exposed reinforcing bars (5) of the precast slab, and an elastic sealing member (6) is filled in the opening, and the elastic sealing member (6) wraps the lateral exposed reinforcing bars (5).

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