Concrete precast beam pouring mold with connecting groove

Abstract

This utility model discloses a concrete precast beam casting mold with a connecting groove. It includes a side mold for casting the precast beam, which consists of two side molds and two end molds. The middle of the side mold has a hollow rectangular middle mold that matches the connecting groove in the middle of the precast beam. The bottom surface of the middle mold has a long strip-shaped stirrup avoidance groove that can avoid some of the stirrups in the precast beam. The two sides of the middle mold perpendicular to the side molds have long strip-shaped main reinforcement avoidance grooves that can avoid some of the main reinforcement sections. The middle mold is formed by splicing two halves of the middle mold in the width direction of the side mold. The two halves of the middle mold are connected to the corresponding side molds through a first connector. Both the stirrup avoidance groove and the main reinforcement avoidance groove are composed of two sections, which are located on the two halves of the middle mold respectively. This mold is easy to assemble and disassemble.

Description

Technical Field

[0001] This utility model relates to prefabricated buildings, and in particular to a concrete precast beam casting mold with a connecting groove. Background Technology

[0002] Currently, with the continuous development of the construction industry, prefabricated buildings are being used more and more widely in China. Precast concrete (PC) structures dominate prefabricated buildings, accounting for over 68.3%. Current precast concrete components mainly include precast beams, precast columns, and composite slabs. Precast beams are being used more and more in prefabricated buildings, and structural assembly methods are becoming increasingly diverse and complex, demanding higher precision from precast components.

[0003] The forming of precast concrete components mainly relies on steel molds. As the structural and precision requirements for precast concrete components become increasingly stringent, the requirements for the forming steel molds also increase. It is necessary to consider not only the operability of precast component production, the forming precision of the components, and the machinability of the molds, but also the ease of mold assembly and disassembly during the production process.

[0004] A typical precast beam has a central connecting groove and shear groove in the middle that connect to the secondary beam, and end connecting grooves at both ends. The existing molds used for casting this precast beam are not convenient for mold installation and demolding. Based on this, a mold for casting this precast beam is proposed, which is convenient for mold installation and demolding. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a concrete precast beam casting mold with a connecting groove to solve the technical problems mentioned in the background art.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A precast concrete beam casting mold with a connecting groove includes a side mold for casting the precast beam. The side mold consists of two edge molds and two end molds. The middle part of the side mold has a hollow cuboid-shaped middle mold that matches the connecting groove in the middle of the precast beam. The bottom surface of the middle mold has a long strip-shaped stirrup avoidance groove that can avoid some of the stirrups of the precast beam. The two sides of the middle mold perpendicular to the edge molds have long strip-shaped main reinforcement avoidance grooves that can avoid some sections of the main reinforcement. The middle mold is formed by splicing two halves of the middle mold in the width direction of the side mold. The two halves of the middle mold are respectively connected to the corresponding edge molds through a first connector. The stirrup avoidance groove and the main reinforcement avoidance groove are both composed of two sections, and the two sections of the stirrup avoidance groove and the main reinforcement avoidance groove are respectively located on the two halves of the middle mold.

[0008] Furthermore, half of the middle mold includes two modules spliced ​​together along the length of the side mold.

[0009] Furthermore, a module is composed of three templates connected vertically.

[0010] Furthermore, the seam between the two modules along the length of the side mold gradually increases from the side mold.

[0011] Furthermore, the middle mold is provided with middle shear molds on both sides perpendicular to the side molds, which match the shear groove in the middle of the precast beam. The two ends of the middle shear molds are connected to the two halves of the middle molds by second connectors.

[0012] Furthermore, the end mold is formed by connecting the end template and the end module inside the end template that matches the end connection groove of the precast beam through a third connector. The end template is provided with main reinforcement through holes that match the main reinforcement of the precast beam and pre-embedded part installation holes that match the pre-embedded parts at the end of the precast beam.

[0013] Furthermore, the end module is rectangular, and the two sides of the end module that are opposite to the two side modules gradually move away from bottom to top.

[0014] Furthermore, an end shear mold that matches the end shear groove of the precast beam is fixed on the lower side of the upper module of the end template.

[0015] Furthermore, the side mold has three rows of first connecting holes along its length in the middle, and one row of first connecting holes at the edge is a common connecting hole. The middle mold has two rows of first connecting holes along its length on both sides corresponding to the side mold. For various middle molds of different specifications of precast beams, one row of first connecting holes can be aligned with the common connecting holes, and the other row of first connecting holes can be aligned with one row of first connecting holes in the other two rows of first connecting holes of the side mold. The middle mold and the side mold are connected by bolts passing through the aligned first connecting holes. The two ends of the side mold have multiple rows of second connecting holes along its length, and the end mold has one row of second connecting holes. For various end molds of different specifications of precast beams, one row of second connecting holes can be aligned with one row of second connecting holes at one end of the side mold. The end mold and the side mold are connected by bolts passing through the aligned second connecting holes. The distance between the middle mold and each row of second connecting holes on both sides matches the different specifications of precast beams.

[0016] The beneficial effects of this utility model are:

[0017] The concrete precast beam casting mold with connecting groove proposed in this utility model is composed of two half middle molds spliced ​​together. The two half middle molds are connected to the two side molds through the first connecting piece. The middle mold is assembled and disassembled by pushing and pulling the two half middle molds from both sides of the side molds, which is convenient.

[0018] Half of the middle formwork consists of two modules spliced ​​together along the length of the side formwork. The splice joint between these two modules gradually increases from the side formwork, which solves the technical problem that the two half middle formwork is difficult to remove due to the excessive concrete pressure on both sides.

[0019] The central shear formwork not only creates shear grooves on the precast beam, but also connects the two halves of the central formwork, thereby improving the strength and rigidity of the central formwork.

[0020] The end mold is formed by connecting the end template and the end module inside the end template through a third connector. The end module and the two side molds on opposite sides gradually move away from bottom to top. When dismantling the mold, the end template is removed first, and then the end module is lifted upward by hoisting equipment, which makes the dismantling of the end module more convenient.

[0021] By setting three rows of first connecting holes in the middle of the side mold and multiple rows of second connecting holes at the end of the side mold, the end molds and middle molds of precast beams of different specifications can be combined with the side mold, thereby realizing the use of a set of molds for multiple precast beams and reducing mold costs.

[0022] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a first-person perspective perspective view of the present invention.

[0025] Figure 2 This is a second-view perspective perspective view of the present invention.

[0026] Figure 3 This is a third-view perspective view of the present invention.

[0027] Figure 4 This is a fourth-view perspective view of the present invention.

[0028] Figure 5 for Figure 4 Enlarged schematic diagram of section A in the middle.

[0029] Figure 6 for Figure 4 Enlarged schematic diagram of section B in the middle.

[0030] Figure 7 This is a perspective view of the intermediate mold in this utility model.

[0031] Figure 8 This is the front view of the first type of precast beam to be produced according to this utility model.

[0032] Figure 9This is a front view showing the arrangement of the middle mold and end mold in the side mold during the production of the first type of precast beam according to this utility model.

[0033] Figure 10 This is the front view of the second type of precast beam to be produced according to this utility model.

[0034] Figure 11 This is a front view showing the arrangement of the middle mold and end mold in the side mold when producing the second type of precast beam according to this utility model.

[0035] Figure 12 This is the front view of the third type of precast beam to be produced according to this utility model.

[0036] Figure 13 This is a front view showing the arrangement of the middle mold and end mold in the side mold when producing the third type of precast beam according to this utility model.

[0037] Figure 14 This is the front view of the fourth type of precast beam to be produced according to this utility model.

[0038] Figure 15 This is a front view showing the arrangement of the middle mold and end mold in the side mold when producing the fourth type of precast beam according to this utility model.

[0039] In the diagram: 1. Side mold; 2. End mold; 3. Tooling; 4. Embedded part mounting frame; 5. End template; 6. End module; 7. Main reinforcement bar of precast beam; 8. Main reinforcement bar through hole; 9. Embedded part mounting hole; 10. End shear mold; 11. Lifting lug; 12. Middle connection groove of precast beam; 13. Middle mold; 14. Stirrup; 15. Stirrup clearance groove; 16. Main reinforcement bar clearance groove; 17. Module; 18. Splice joint; 19. Middle shear groove of precast beam; 20. Middle shear mold; 21. First connection hole; 22. Second connection hole. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0041] Example 1

[0042] like Figure 1-7The concrete precast beam casting mold with connecting groove shown is used on a mold platform. It includes side molds for casting precast beams. The side molds consist of two side molds 1 and two end molds 2. The lower sides of the two side molds 1 are fixed to the mold platform by bolts. The upper sides of the two side molds 1 are connected by a tooling 3. There are many existing technologies for such tooling 3. For example, tooling 3 includes two inverted S-shaped connecting blocks. The two inverted S-shaped connecting blocks are welded to the two side molds respectively. Connecting rods are placed in the two opposite connecting grooves of the two inverted S-shaped connecting blocks. The two ends of the connecting rods are threaded to the connecting heads that can be locked onto the S-shaped connecting blocks. An embedded part mounting bracket 4 can also be detachably connected between the upper sides of the two side molds 1. There are various existing technologies for embedded part mounting bracket 4. For example, embedded part mounting bracket 4 includes two support rods. The two support rods support a crossbar. A hanging rod is bolted to the crossbar. An embedded part is bolted to the hanging rod. The two support rods are bolted to the two side molds.

[0043] The end formwork 2 is formed by connecting the end template 5 and the end module 6 on the inner side of the end template 5, which matches the end connection groove of the precast beam, through a third connector, which is a bolt. The two sides of the end template 5 are respectively connected to the two side templates 1 by bolts. The end template 5 is provided with the main reinforcement through hole 8 matching the main reinforcement 7 of the precast beam and the embedded part installation hole 9 matching the embedded part at the end of the precast beam. The lower side of the end module 6 on the upper end template 5 is fixed with the end shear mold 10 matching the shear groove at the end of the precast beam. The end module 6 is rectangular and has two lifting lugs 11 on the top. The two sides of the end module 6 opposite to the two side templates 1 gradually move away from bottom to top. When dismantling the end template 2, the end template 5 is removed first, and then the end module 6 is lifted upward by the lifting lugs 11 using hoisting equipment. This end template 2 can avoid the problem of the end module 6 being difficult to dismantle due to being embedded in the concrete.

[0044] The middle of the side formwork is provided with a hollow rectangular middle formwork 13 that matches the connecting groove 12 in the middle of the precast beam. The bottom surface of the middle formwork 13 is provided with a long strip stirrup avoidance groove 15 that can avoid the stirrups 14 of the precast beam. The two sides of the middle formwork 13 that are perpendicular to the side formwork 1 are provided with long strip main reinforcement avoidance grooves 16 that can avoid the main reinforcement 7 sections of the precast beam. The middle formwork 13 is formed by splicing two halves of the middle formwork in the width direction of the side formwork. The two halves of the middle formwork are respectively connected to the corresponding side formwork 1 through a first connecting groove. The connectors are detachable. The first connector is a bolt. Both the stirrup clearance groove 15 and the main reinforcement clearance groove 16 are composed of two sections, which are located on the two halves of the middle mold, respectively. One half of the middle mold includes two modules 17 spliced ​​together along the length of the side mold. Each module 17 is composed of three templates vertically connected. One template serves as 1 / 4 of the bottom surface of the middle mold and has a section with the stirrup clearance groove 15. The other template is connected to the side... The remaining template serves as half of the side of the middle mold 13, with a main reinforcement clearance groove 7. The splice joint 18 of the two modules 17 along the length of the side mold gradually increases from the side mold 1. The middle mold 13 is provided with a middle shear mold 20 on both sides perpendicular to the side mold 1, which matches the shear groove 19 in the middle of the precast beam. The two ends of the middle shear mold 20 are connected to the two halves of the middle mold by a second connector, which is a bolt. The middle mold 13 is assembled and disassembled by pushing and pulling the modules 17 on both sides of the side mold, which is convenient. The splice joint 18 of the two modules 17 along the length of the side mold gradually increases from the side mold, which can avoid the situation where the modules 17 are difficult to remove due to the excessive concrete pressure on both sides of the middle mold 13. The setting of the middle shear mold 20 can not only form the shear groove 19 on the precast beam, but also connect the two halves of the middle mold, thereby improving the strength and rigidity of the middle mold 13.

[0045] Example 2

[0046] like Figure 1-7As shown, the difference from Embodiment 1 is that: the side mold 1 has three rows of first connecting holes 21 along its length in the middle, one row of first connecting holes 21 on the right edge is a common connecting hole, and the remaining holes on both sides of the first connecting hole in the middle of the side mold are installation holes for precast beam embedded parts. The middle mold 13 has two rows of first connecting holes 21 along its length on both sides corresponding to the side mold 13. For various middle molds 13 with different specifications of precast beams, one row of first connecting holes 21 can be aligned with the common connecting hole, and the other row of first connecting holes 21 can be aligned with one of the other two rows of first connecting holes 21 in the side mold. 3. The side mold 1 is connected to the first connecting hole 21 aligned with the side mold 1 by bolts; the left end of the side mold 1 has multiple rows of second connecting holes 22 along the length of the side mold 1, and the right end of the side mold 1 has multiple rows of second connecting holes 22 along the length of the side mold 1; the end mold 2 has a row of second connecting holes 22, and the row of second connecting holes 22 corresponding to various end molds 22 of different specifications of precast beams can be aligned with the row of second connecting holes 22 at one end of the side mold 1. The end mold 22 and the side mold 1 are connected by bolts through the aligned second connecting holes 22. The distance between the middle mold 13 and each row of second connecting holes 22 on both sides matches the different specifications of precast beams (e.g., Figure 8-15 (As shown). By setting three rows of first connecting holes 21 in the middle of the side mold 1 and multiple rows of second connecting holes 22 at the end of the side mold 2, the end mold 2 and middle mold 13 of precast beams of different specifications can be connected to the side mold 1, thereby realizing the sharing of a set of molds for multiple precast beams and reducing mold costs.

[0047] Example 3

[0048] like Figure 1-7 The method for assembling and disassembling a precast concrete beam casting mold with a connecting groove is shown. It utilizes the aforementioned precast concrete beam casting mold with a connecting groove and includes an assembly method and a disassembly method:

[0049] The molding method includes the following steps:

[0050] S1. Apply release agent to the mold;

[0051] S2. Place the steel reinforcement cage on the formwork;

[0052] S3. Place two modules 17 on both sides of the connecting groove 13 in the middle of the precast beam corresponding to the steel cage and align the stirrup clearance groove 15 of the module 17 with the stirrup 14. Push each module 17 from both sides of the steel cage towards the middle so that the four modules 17 are spliced ​​into a complete middle mold 13.

[0053] S4. Two side molds 1 are mounted on the mold table using bolts, the upper side of the two side molds 1 is connected using tooling 3, and the two end molds 2 are connected to the two ends of the two side molds 1 using bolts.

[0054] S5. Use bolts to connect each module 17 to the two side molds 1 respectively;

[0055] S6. Place the middle shear mold 20 on both sides perpendicular to the middle mold 13 and the side mold 1, and connect the two ends of the middle shear mold 20 to the two modules 17 respectively with bolts;

[0056] S7. Use sealing materials such as rubber plugs or foam to seal unused holes or grooves.

[0057] The demolding method includes the following steps:

[0058] S1. Remove the bolts connecting each module 17 to the two side molds 1, remove the bolts connecting the two end molds 2 to the two side molds 1, remove the tooling 3, and remove the connecting bolts between the side molds 1 and the mold table;

[0059] S2. De-edge mold 1;

[0060] S3. Remove the bolts connecting end template 5 and end module 6, remove end template 5, and use hoisting equipment to lift end module 6 upwards to remove end module 6;

[0061] S4. Remove the bolts connecting the two middle shear molds 20 and the middle mold 13, pull each module 17 to both sides of the precast beam to remove the middle mold 13, and pull the middle shear mold into the middle connecting groove 13 of the precast beam to remove the two middle shear molds 20.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A concrete precast beam casting mold with connecting groove, comprising side molds for casting precast beams, said side molds being composed of two side molds (1) and two end molds (2), characterized in that: The middle part of the side mold is provided with a hollow cuboid middle mold (13) that matches the middle connecting groove (12) of the precast beam. The bottom surface of the middle mold (13) is provided with a long strip stirrup avoidance groove (15) that can avoid the stirrups (14) of the precast beam. The two sides of the middle mold (13) that are perpendicular to the side mold (1) are provided with long strip main reinforcement avoidance grooves (16) that can avoid the main reinforcement (7) of the precast beam. The middle mold (13) is formed by splicing two halves of the middle mold in the width direction of the side mold. The two halves of the middle mold are respectively connected to the corresponding side mold (1) through the first connector. The stirrup avoidance groove (15) and the main reinforcement avoidance groove (16) are both composed of two sections. The two sections of the stirrup avoidance groove (15) and the main reinforcement avoidance groove (16) are respectively located on the two halves of the middle mold.

2. The precast concrete beam casting mold with connecting groove according to claim 1, characterized in that: Half of the middle mold consists of two modules (17) spliced ​​together along the length of the side mold.

3. The precast concrete beam casting mold with connecting groove according to claim 2, characterized in that: A module (17) is made up of three templates connected vertically.

4. The precast concrete beam casting mold with connecting groove according to claim 2, characterized in that: The joint (18) between the two modules (17) in the length direction of the side mold gradually increases from the side mold (1).

5. The precast concrete beam casting mold with connecting groove according to claim 1, characterized in that: The middle mold (13) is provided with a middle shear mold (20) on both sides perpendicular to the side mold (1) and matched with the middle shear groove (19) of the precast beam. The two ends of the middle shear mold (20) are connected to the two halves of the middle mold by the second connector.

6. The precast concrete beam casting mold with connecting groove according to claim 1, characterized in that: The end mold (2) is formed by connecting the end template (5) and the end module (6) inside the end template (5) that matches the end connection groove of the precast beam through a third connector. The end template (5) is provided with a main reinforcement through hole (8) that matches the main reinforcement (7) of the precast beam and an embedded part installation hole (9) that matches the embedded part at the end of the precast beam.

7. The precast concrete beam casting mold with connecting groove according to claim 6, characterized in that: The end module (6) is rectangular, and the two sides of the end module (6) opposite to the two side modules (1) gradually move away from bottom to top.

8. The precast concrete beam casting mold with connecting groove according to claim 6, characterized in that: The lower side of the upper module (6) of the end template (5) is fixed with an end shear mold (10) that matches the end shear groove of the precast beam.

9. The precast concrete beam casting mold with connecting groove according to any one of claims 1-8, characterized in that: The side mold (1) has three rows of first connecting holes (21) along its length in the middle. The row of first connecting holes (21) at the edge is a common connecting hole. The middle mold (13) has two rows of first connecting holes (21) along its length on both sides of the side mold (1). One row of first connecting holes (21) for various middle molds (13) corresponding to different specifications of precast beams can be aligned with the common connecting hole, and the other row of first connecting holes (21) can be aligned with one of the other two rows of first connecting holes (21) of the side mold. The middle mold (13) and the side mold (1) are connected by bolts. The first connecting hole (21) is aligned and connected; the two ends of the side mold (1) are provided with multiple rows of second connecting holes (22) along the length direction of the side mold (1), and the end mold (2) is provided with a row of second connecting holes (22). The row of second connecting holes (22) of the various end molds (2) corresponding to different specifications of precast beams can be aligned with the row of second connecting holes (22) at one end of the side mold (1). The end mold (2) and the side mold (1) are connected by bolts through the aligned second connecting holes (22). The distance between the middle mold (13) and each row of second connecting holes (22) on both sides matches the different specifications of precast beams.

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