Compression-molded homogeneous plate with built-in keel
By using a press-formed built-in keel structure, the problems of deformation and insufficient interfacial bonding force of homogeneous plates under concentrated loads are solved, thereby achieving a two-way increase in compressive strength and an extension of fatigue life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG WEIBAO ENERGY SAVING TECH GRP CO LTD
- Filing Date
- 2025-04-13
- Publication Date
- 2026-05-12
AI Technical Summary
Existing homogeneous plates are prone to local deformation or cracking when subjected to concentrated loads, and existing internal keel reinforcement processes have problems such as keel displacement, torsion, or insufficient interfacial bonding.
During the production of homogeneous boards, a keel is built in. The keel with a specific structure is pressed and formed integrally with the board body. Combined with the design of the connectors, a board-rib composite structure is formed to achieve a two-way improvement in compressive strength.
It achieves bidirectional compressive strength enhancement, reduces keel displacement and interface damage, and improves the fatigue life and installation efficiency of homogeneous plates.
Smart Images
Figure CN224228098U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of homogeneous plate technology, specifically, it relates to a pressed and molded homogeneous plate with an internal keel. Background Technology
[0002] Existing homogeneous boards (such as gypsum board and fiber cement board) often face the problem of insufficient compressive strength in building applications, especially when subjected to concentrated loads (such as suspended heavy objects or long-term lateral stress, such as wind pressure in high-rise buildings), which can easily lead to local deformation or even cracking. This defect mainly stems from their material characteristics: homogeneous boards have a homogeneous internal structure and lack a directional reinforcing mechanical skeleton, resulting in a single stress transmission path and generally low compressive strength. To solve this problem, "embedded keel reinforcement technology" is introduced—light steel keels or composite material keels (such as glass fiber reinforced plastic) are embedded during the production of homogeneous boards to form a "board-rib composite structure".
[0003] The current reinforcement process for homogeneous boards with built-in keels has two major defects that directly affect the mechanical properties of the composite structure: 1. During the homogeneous board pressing stage (such as gypsum board roll pressing or fiber cement board hot pressing), if the unfixed keel is directly pressed together with the raw material, the difference in material rheological properties will cause the keel to shift or twist; 2. To avoid the problem of pressing deformation, some manufacturers use the "post-drilling embedding method"—first, mechanically groove / drill holes in the homogeneous board, then insert the keel and fix it with adhesive. Although this method simplifies the process, it introduces new defects, such as insufficient interfacial bonding: the homogeneous board at the edge of the hole forms micro-cracks due to cutting damage, and the adhesive only covers the contact surface, resulting in low shear strength at the keel-board interface; stress concentration is aggravated, and geometric abrupt changes occur at the hole, significantly reducing fatigue life. Utility Model Content
[0004] To address the aforementioned problems in the prior art, this utility model provides a press-molded homogeneous plate with an internal keel.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] As one aspect of this utility model, a press-molded homogeneous plate with an internal keel is proposed, comprising: a plate body and a first keel, wherein the first keel is disposed in the plate body and the first keel and the plate body are press-molded into one piece.
[0007] The first keel includes a keel body, the upper end of which extends to the right to form an upper supporting keel, and the lower end of which extends to the left to form a lower supporting keel.
[0008] Alternatively, the upper end of the keel body extends to the left to form an upper supporting keel, and the lower end of the keel body extends to the right to form a lower supporting keel.
[0009] According to this utility model, the keel body forms a preset angle with the horizontal plane.
[0010] According to this utility model, the upper supporting keel is parallel to the horizontal plane.
[0011] According to this utility model, the lower support keel is parallel to the horizontal plane.
[0012] According to this utility model, at least one first vertical anti-compression keel extends downward from the end of the upper supporting keel.
[0013] According to this utility model, the end of the lower support keel extends downward by at least one second vertical anti-compression keel.
[0014] According to this utility model, the first vertical compressive keel and / or the second vertical compressive keel form an angle with the horizontal plane.
[0015] According to this utility model, it also includes a second keel; the first keel and the second keel are pressed together with the plate body as one piece; the second keel is spaced apart from the first keel; the structure of the second keel is the same as the structure of the first keel; the first keel and the second keel are connected by a connector.
[0016] According to this utility model, the connecting member is parallel to the horizontal plane.
[0017] According to this utility model, the connector is located near the upper supporting keel; both ends of the connector are respectively connected to the corresponding keel body.
[0018] The beneficial effects of the press-molded built-in keel homogeneous plate of this utility model are specifically reflected in the following: the vertical keel body is combined with the horizontally extending upper and lower support keels, which transmits the vertical pressure to the support platform through the keel body, and the lateral stress is dispersed by the upper and lower support keels, thereby achieving a two-way increase in compressive strength. Attached Figure Description
[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0020] Figure 1 This is a schematic diagram of the structure of the press-molded homogeneous plate with built-in keel according to Embodiment 1 of this utility model;
[0021] Figure 2 This is a three-dimensional structural view of the built-in keel of Embodiment 1 of this utility model;
[0022] Figure 3This is a cross-sectional view of the internal keel structure of Embodiment 1 of this utility model;
[0023] Figure 4 This is a structural diagram of the built-in keel in the mold frame of Embodiment 1 of this utility model;
[0024] Figure 5 This is a diagram showing the usage state of the built-in keel and limiting component in Embodiment 1 of this utility model;
[0025] Figure 6 This is a schematic diagram of the limiting member in Embodiment 1 of this utility model;
[0026] Figure 7 This is a cross-sectional view of the built-in keel and limiting member in Embodiment 1 of this utility model;
[0027] Figure 8 This is a cross-sectional view of the first keel in Embodiment 1 of this utility model;
[0028] Figure 9 This is a cross-sectional view of the first and second vertical compressive keels in Embodiment 1 of this utility model. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] Example 1
[0031] One embodiment of this application provides a pressed, molded, internally reinforced homogeneous plate, such as... Figures 1-3 As shown, it includes: a slab body 1 and an internal keel 2, wherein the internal keel 2 is disposed within the slab body 1, and the internal keel 2 and the slab body 1 are pressed together as a single unit; the slab body 1 is made of dry or semi-dry concrete. During pressing, the internal keel 2 is placed in a pressing mold box, and then the dry or semi-dry concrete is poured into the pressing mold box for pressing and shaping. It should be noted that dry or semi-dry concrete is existing technology and will not be described in detail here; the amount of dry or semi-dry concrete required for each homogeneous slab is a common practice in the art and will not be detailed further.
[0032] Specifically, such as Figure 8As shown, the built-in keel 2 includes a first keel 21 and a second keel 22 spaced apart, connected by a connector 23 parallel to the horizontal plane. The structure of the second keel 22 is the same as that of the first keel 21. The first keel 21 includes a keel body 211, which forms a preset angle with the horizontal plane, ranging from 83 degrees to 107 degrees. At this angle, the built-in keel 2 will not deflect during the pressing process. Preferably, the keel body 211 is perpendicular to the horizontal plane. The two ends of the connector 23 are respectively connected to the corresponding keel body 211.
[0033] The upper end of the keel body 211 extends to the right to form an upper supporting keel 212, and the lower end of the keel body 211 extends to the left to form a lower supporting keel 213.
[0034] Alternatively, the upper end of the keel body 211 extends to the left to form an upper supporting keel 212, and the lower end of the keel body 211 extends to the right to form a lower supporting keel 213.
[0035] Preferably, the upper support keel 212 is parallel to the horizontal plane; the lower support keel 213 is parallel to the horizontal plane; the connector 23 is close to the upper support keel 212; and the connector 23 is parallel to the horizontal plane.
[0036] Furthermore, such as Figure 9 As shown, the end of the upper support keel 212 extends downward by at least one first vertical compressive keel 214, and the end of the lower support keel 213 extends downward by at least one second vertical compressive keel 215. The first vertical compressive keel 214 and / or the second vertical compressive keel 215 form an angle of 83 degrees to 107 degrees with the horizontal plane, thereby increasing the bending toughness of the overall built-in keel 2.
[0037] In this embodiment, the upper support keel 212 and the lower support keel 213 can be used as the drilling part during installation. The built-in keel 2 increases the compressive strength of the homogeneous plate, and the connector 23 ensures that the first keel 21 and the second keel 22 will not deform or shift during the pressing process.
[0038] In this embodiment, the vertical keel body 211 is combined with the horizontally extending upper support keel 212 and lower support keel 213, which transmits the vertical pressure to the support platform through the keel body 211, while the lateral stress is dispersed by the upper support keel 212 and lower support keel 213, thereby achieving a two-way increase in compressive strength. The design of the connector 23 enables the limiting component of the built-in keel in the pressing mold box to achieve constraint, resulting in small displacement during the pressing process. The horizontal extension sections of the upper support keel 212 and lower support keel 213 form a "cantilever beam effect," which suppresses the torsion of the keel body 211 under the action of the pressing lateral force. The upper support keel 212 and lower support keel 213 serve as pre-drilled parts, eliminating the need for on-site positioning and measurement during installation, increasing drilling efficiency by 60%, and avoiding damage to the homogeneous plate substrate. The Z-shaped cross-section formed by the keel body and the support keel makes its bending moment of inertia 1.8 times that of ordinary rectangular cross-section keels, allowing the homogeneous plate thickness to be reduced by 15% while still meeting the deflection requirements.
[0039] Furthermore, such as Figures 4-7 As shown, the limiting member 17 inside the pressing mold box includes an ear seat 171 connected to the outer side of the mold frame 12. It should be noted that the structure of the pressing mold box and the mold frame is prior art, such as the mold box disclosed in publication number CN113510827A, which will not be described again here. The mold frame 12 is provided with clearance holes 121, which are located on the side of the ear seat 171, and the number of clearance holes 121 is the same as the number of ear seats 171. A limiting block is connected to the ear seat 171 by a connecting pin 172. 173; The limiting block 173 is rotatable relative to the ear seat 171 with the center of the connecting pin 172 as the fulcrum; The limiting block 173 matches the relief hole 121 to prevent dry or semi-dry concrete in the mold frame 12 from leaking out of the relief hole 121; It should be noted that when the keel body 211 is at a preset angle to the horizontal plane, the keel limiting unit 17 and the built-in keel 2 can be limited, that is, the keel limiting unit 17 can cooperate with the upper supporting keel 212 or the lower supporting keel 213.
[0040] Example 2
[0041] The difference between Example 2 and Example 1 is that the built-in keel 2 only has the first keel 21 structure; the limiting member 17 provides limiting support for the upper supporting keel 212 and the lower supporting keel 213 of the first keel 21.
[0042] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.
[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0044] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.
Claims
1. A press-formed homogeneous plate with an internal keel, characterized in that, It includes: a plate body and a first keel, the first keel being disposed within the plate body and pressed together with the plate body; The first keel includes a keel body, the upper end of which extends to the right to form an upper supporting keel, and the lower end of which extends to the left to form a lower supporting keel. Alternatively, the upper end of the keel body extends to the left to form an upper supporting keel, and the lower end of the keel body extends to the right to form a lower supporting keel.
2. The press-formed homogeneous plate with an internal keel as described in claim 1, characterized in that, The keel body forms a preset angle with the horizontal plane.
3. The press-formed homogeneous plate with an internal keel as described in claim 2, characterized in that, The upper supporting keel is parallel to the horizontal plane.
4. The press-formed homogeneous plate with an internal keel as described in claim 3, characterized in that, The lower support keel is parallel to the horizontal plane.
5. The press-formed homogeneous plate with an internal keel as described in claim 2, characterized in that, The end of the upper supporting keel extends downwards by at least one first vertical compressive keel.
6. The press-formed homogeneous plate with an internal keel as described in claim 5, characterized in that, The end of the lower support keel extends downward by at least one second vertical compressive keel.
7. The press-formed homogeneous plate with an internal keel as described in claim 6, characterized in that, The first vertical compressive keel and / or the second vertical compressive keel form an angle with the horizontal plane.
8. The press-formed homogeneous plate with an internal keel as described in claim 2, characterized in that, It also includes a second keel; the first and second keels are pressed together with the plate body as one piece; the second keel is spaced apart from the first keel; the structure of the second keel is the same as that of the first keel; the first and second keels are connected by connectors.
9. The press-formed homogeneous plate with an internal keel as described in claim 8, characterized in that, The connector is parallel to the horizontal plane.
10. The press-formed homogeneous plate with an internal keel as described in claim 8 or 9, characterized in that, The connector is located near the upper supporting keel; both ends of the connector are connected to the corresponding keel body.