Prefabricated pseudo-classic architecture concrete rafter

Abstract

The utility model relates to the technical field of concrete rafters, and discloses a prefabricated pseudo-classic building concrete rafter which comprises prefabricated rafters, purlin bearing tables arranged on the lower side faces of the prefabricated rafters and connecting pieces used for connecting the two prefabricated rafters, and connecting protrusions arranged on the side faces of the two ends of each connecting piece. Clamping grooves matched with the connecting protrusions and the connecting pieces are formed in the opposite side faces of the two ends of the prefabricated rafters, first limiting oblique angles are arranged on the side faces of the connecting protrusions, second limiting oblique angles matched with the first limiting oblique angles are arranged on the opposite side walls in the clamping grooves, and a plurality of counter bores are formed in the connecting pieces in a penetrating mode; a penetrating threaded column penetrating through the prefabricated rafter is arranged in the counterbore in a penetrating mode, the two ends of the penetrating threaded column are in threaded connection with limiting nuts located in the counterbore, and the purlin bearing table is matched with the purlin in position. According to the prefabricated rafter, the ends of the prefabricated rafters are not prone to breakage during transportation, during installation and after installation, the bearing capacity is improved, and the effect of the prefabricated rafters after installation is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete rafters technology, specifically a precast antique-style concrete rafter. Background Technology

[0002] A search revealed a patent with publication number CN215594659U, which discloses a concrete rafter structure for an antique building, including a rafter body, splicing components, and installation components. The outer side of the rafter body is provided with a protective component for waterproofing and flame retardancy. The splicing components for splicing the rafters are located at the left and right ends of the rafter body, and the installation components for installing the rafters are located on the upper and lower sides of the rafter body. This antique-style concrete rafter structure features limiting blocks and grooves on the left and right sides of the rafter body. This facilitates assembly of the concrete rafters by sliding the limiting blocks into the grooves and then securing the two rafters together with bolts and nuts. This improves the ease of transporting the rafters, prevents excessively long concrete rafters from breaking during transport, and allows for adjustment of the rafter length to accommodate roof widths, thus expanding the structural applicability of the concrete rafter structure.

[0003] The aforementioned patents have significant beneficial effects, but in practical application, they still have the following shortcomings:

[0004] The aforementioned comparative documents describe a method for connecting long rafters using limiting blocks and limiting grooves located at both ends. The limiting blocks protruding from the rafter ends engage with the limiting grooves at the ends of adjacent rafters. However, in reality, because concrete rafters are precast concrete, and the limiting blocks in the comparative documents are much smaller than the rafter ends, the connection between the limiting blocks and the rafter ends is prone to breakage during transportation, installation, or under stress. If the limiting blocks break, the rafters cannot be installed together. Therefore, there is an urgent need in the art to improve concrete rafters to address the shortcomings of the prior art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a precast antique-style concrete rafter. The ends of the precast rafter are less prone to breakage during transportation, installation, and after installation, and the load-bearing capacity is improved, thus enhancing the overall effect of the precast rafter after installation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precast antique-style concrete rafter, comprising a precast rafter, a purlin support platform on the lower side of the precast rafter, and a connector for connecting two precast rafters. Both ends of the connector have connecting protrusions. Opposite sides of both ends of the precast rafter are provided with snap-fit ​​grooves adapted to the connecting protrusions and the connector. The connecting protrusions have a first limiting angle on their sides, and opposite sidewalls within the snap-fit ​​grooves are provided with second limiting angles adapted to the first limiting angle. The connector has several countersunk holes, and threaded posts penetrating through the precast rafters pass through the countersunk holes. Both ends of the threaded posts are threaded with limiting nuts located within the countersunk holes. The purlin support platform is adapted to the position of the purlin.

[0007] Preferably, both ends of the connector are fixedly connected to a connecting bracket that matches the snap-fit ​​groove, and a connecting bolt for connecting to the precast rafter passes through one side of the connecting bracket.

[0008] Preferably, the inner wall of the snap-fit ​​groove is provided with a pre-embedded threaded cylinder that is threadedly connected to the connecting bolt, and the pre-embedded threaded cylinder is embedded in the precast rafter.

[0009] Preferably, a connecting steel plate is fixedly connected between the two pre-embedded threaded cylinders, and several reinforcing ribs are provided inside the precast rafters, with the reinforcing ribs fixedly connected to the connecting steel plate.

[0010] Preferably, the reinforcing ribs extend to the end of the precast rafters, and reinforcing steel plates are fixedly connected between the ends of the reinforcing ribs extending to the end of the precast rafters.

[0011] Preferably, a pre-embedded pipe adapted to the through threaded column is pre-embedded in the precast rafter, and a connecting rib is fixedly connected between the pre-embedded pipe and the reinforcing rib.

[0012] Preferably, a positioning groove is provided at the end of the precast rafter, and a positioning strip is inserted into the positioning groove.

[0013] To address the shortcomings of existing technologies, this utility model provides a precast antique-style concrete rafter, overcoming the deficiencies of the prior art. The beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, the connector is snapped into the snap-fit ​​groove on the side of the end of two adjacent precast rafters. The threaded post passes through the connector and the precast rafter. The limiting nut is threaded to both ends of the threaded post, thereby achieving the effect of connecting and fixing the precast rafters. The ends of the precast rafters are less likely to break during transportation, installation and after installation, and the load-bearing capacity is improved, thus improving the effect of the precast rafters after installation.

[0015] 2. In this utility model, the purlin support platform places the precast rafters on the purlins. The purlin support platform has a positioning effect, and the connection position between the two precast rafters is located on the purlins. The purlins support the ends of the two precast rafters, thereby improving the support strength after the precast rafters are connected.

[0016] 3. In this utility model, by setting connecting steel plates, reinforcing ribs and reinforcing steel plates, the pre-embedded pipe is connected and positioned with the reinforcing ribs, thereby improving the overall load-bearing capacity of the precast rafters.

[0017] 4. In this utility model, the positioning strip is inserted into the positioning groove, which facilitates the end docking and positioning of the two precast rafters.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the structure after the two prefabricated rafters are connected in this utility model;

[0021] Figure 2 This is a schematic diagram of the connecting component in this utility model;

[0022] Figure 3 This is a schematic diagram of the positioning strip in this utility model;

[0023] Figure 4 This is a schematic diagram of the connecting frame in this utility model;

[0024] Figure 5 This is a schematic diagram of the pre-embedded pipe in this utility model.

[0025] In the diagram: 1. Precast rafter; 2. Purlin support platform; 3. Connector; 4. Connecting protrusion; 5. First limiting angle; 6. Second limiting angle; 7. Countersunk hole; 8. Through threaded post; 9. Limiting nut; 10. Snap-fit ​​groove; 11. Connecting bracket; 12. Connecting bolt; 13. Embedded threaded cylinder; 14. Connecting steel plate; 15. Reinforcing rib; 16. Reinforcing steel plate; 17. Embedded pipe; 18. Connecting rib; 19. Positioning groove; 20. Positioning strip. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 A precast antique-style concrete rafter includes a precast rafter 1, a purlin support platform 2 on the lower side of the precast rafter 1, and a connector 3 for connecting two precast rafters 1. Both ends of the connector 3 are provided with connecting protrusions 4. The opposite sides of both ends of the precast rafter 1 are provided with snap-fit ​​grooves 10 adapted to the connecting protrusions 4 and the connector 3. The side of the connecting protrusion 4 is provided with a first limiting angle 5. The opposite side walls of the snap-fit ​​groove 10 are provided with a second limiting angle 6 adapted to the first limiting angle 5. Several countersunk holes 7 are provided through the connector 3. A through threaded post 8 that penetrates the precast rafter 1 is provided in the countersunk hole 7. The two ends of the through threaded post 8 are threadedly connected to limiting nuts 9 located in the countersunk hole 7. The purlin support platform 2 is adapted to the position of the purlin.

[0028] Specifically, when connecting several precast rafters 1, the precast rafters 1 are placed on the purlins using purlin support platforms 2. The purlin support platforms 2 serve a positioning function, ensuring the connection point between two precast rafters 1 is precisely on the purlins. The purlins support the ends of the two precast rafters 1, increasing the support strength after the connection. With the ends of two adjacent precast rafters 1 aligned, two connectors 3 are snapped into the snap-fit ​​grooves 10 on the sides of the ends of the two adjacent precast rafters 1. The limiting angle 5 and the second limiting angle 6 abut against each other to limit the two precast rafters 1. The through threaded post 8 passes through the connector 3 and the precast rafter 1, and is threaded to both ends of the through threaded post 8 by the limiting nut 9, which limits the connector 3 and the precast rafter 1, and achieves the effect of connecting and fixing the precast rafter 1. The ends of the precast rafter 1 are less likely to break during transportation, installation and after installation, and the load-bearing capacity is improved, thus improving the effect of the precast rafter 1 after installation.

[0029] As a technical optimization of this utility model, both ends of the connector 3 are fixedly connected with a connecting frame 11 that is adapted to the snap-fit ​​groove 10. A connecting bolt 12 that is connected to the precast rafter 1 passes through one side of the connecting frame 11. The inner side wall of the snap-fit ​​groove 10 is provided with a pre-embedded threaded cylinder 13 that is threadedly connected to the connecting bolt 12. The pre-embedded threaded cylinder 13 is pre-embedded in the precast rafter 1. When precasting the precast rafter 1, the pre-embedded threaded cylinder 13 is pre-embedded in the precast rafter 1. After the two precast rafters 1 are connected by the connector 3, the connecting bolt 12 passes through the connecting frame 11 and is threadedly connected to the pre-embedded threaded cylinder 13, thereby improving the stability of the connection between the two precast rafters 1.

[0030] As a technical optimization of this utility model, a connecting steel plate 14 is fixedly connected between the two pre-embedded threaded cylinders 13. Several reinforcing ribs 15 are provided inside the precast rafter 1. The reinforcing ribs 15 are fixedly connected to the connecting steel plate 14. The reinforcing ribs 15 extend to the end position of the precast rafter 1. A reinforcing steel plate 16 is fixedly connected between the ends of the reinforcing ribs 15 extending to the end position of the precast rafter 1. By setting the reinforcing ribs 15, the reinforcing steel plate 16 and the connecting steel plate 14, the overall load-bearing strength of the precast rafter 1 and the pre-embedded threaded cylinders 13 is improved.

[0031] As a technical optimization of this utility model, a pre-embedded pipe 17 adapted to the through threaded column 8 is pre-embedded in the precast rafter 1. A connecting rib 18 is fixedly connected between the pre-embedded pipe 17 and the reinforcing rib 15. The pre-embedded pipe 17 facilitates the through threaded column 8 to pass through and is positioned by the connecting rib 18.

[0032] As a technical optimization of this utility model, a positioning groove 19 is provided at the end of the precast rafter 1, and a positioning strip 20 is inserted into the positioning groove 19. When connecting the ends of two precast rafters 1, the positioning strip 20 is inserted into the positioning groove 19 that has been positioned, and the positioning groove 19 of the precast rafter 1 that is connected to the precast rafter 1 is inserted into the positioning strip 20, which facilitates the alignment of the ends of the precast rafters 1 and improves the load-bearing effect between the ends of the two precast rafters 1.

[0033] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precast antique-style concrete rafter, comprising a precast rafter (1), wherein a purlin support platform (2) is provided on the lower side of the precast rafter (1), characterized in that, It also includes a connector (3) for connecting two precast rafters (1). The two ends of the connector (3) are provided with connecting protrusions (4). The two ends of the precast rafters (1) are provided with snap-fit ​​grooves (10) that are adapted to the connecting protrusions (4) and the connector (3). The connecting protrusions (4) are provided with a first limiting angle (5) on the side. The snap-fit ​​grooves (10) are provided with a second limiting angle (6) that is adapted to the first limiting angle (5) on the opposite side walls. The connector (3) is provided with several countersunk holes (7). The countersunk holes (7) are provided with threaded posts (8) that penetrate the precast rafters (1). The two ends of the threaded posts (8) are threaded with limiting nuts (9) located in the countersunk holes (7). The purlin support platform (2) is adapted to the position of the purlin.

2. A precast antique-style concrete rafter according to claim 1, characterized in that, Both ends of the connector (3) are fixedly connected to a connecting bracket (11) that is compatible with the snap-fit ​​groove (10), and a connecting bolt (12) for connecting to the precast rafter (1) passes through one side of the connecting bracket (11).

3. A precast antique-style concrete rafter according to claim 2, characterized in that, The inner wall of the snap-fit ​​groove (10) is provided with a pre-embedded threaded cylinder (13) that is threadedly connected to the connecting bolt (12). The pre-embedded threaded cylinder (13) is pre-embedded in the precast rafter (1).

4. A precast antique-style concrete rafter according to claim 3, characterized in that, A connecting steel plate (14) is fixedly connected between the two pre-embedded threaded cylinders (13). Several reinforcing ribs (15) are provided inside the precast rafter (1), and the reinforcing ribs (15) are fixedly connected to the connecting steel plate (14).

5. A precast antique-style concrete rafter according to claim 4, characterized in that, The reinforcing rib (15) extends to the end of the precast rafter (1), and a reinforcing steel plate (16) is fixedly connected between the ends of the reinforcing rib (15) extending to the end of the precast rafter (1).

6. A precast antique-style concrete rafter according to claim 4, characterized in that, The precast rafter (1) has a pre-embedded pipe (17) adapted to the through threaded column (8), and the pre-embedded pipe (17) and the reinforcing bar (15) are fixedly connected by a connecting bar (18).

7. A precast antique-style concrete rafter according to claim 1, characterized in that, A positioning groove (19) is provided at the end of the precast rafter (1), and a positioning strip (20) is inserted into the positioning groove (19).

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