A temporary prestressed hole forming device for segmental beams

Abstract

The utility model provides a temporary prestressed hole-forming device for segmental beams, the hole-forming device comprising: a main beam, two supporting structures are respectively arranged at both ends of the main beam. A fixed hole frame is arranged on the main beam between the two supporting structures, and a plurality of reserved holes are arranged on the fixed hole frame. A mold rod for setting the prestressed hole can be inserted into the reserved hole. The hole-forming device has a simple structure and is easy to install and operate. It can accurately locate and adjust the position according to the position on the drawing before installation, greatly improving the position accuracy of the hole-forming and improving the construction efficiency. In addition, the hole-forming device is easy and quick to install and dismantle, and can be recycled, which greatly reduces the construction cost.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated segmental beams, and in particular to a temporary prestressed channel hole forming device for segmental beams. Background Art

[0002] With the improvement of engineering technology, prefabricated segmental beams are often used in the infrastructure field. The construction progress can be greatly improved by prefabrication in advance.

[0003] In the prior art, during the prefabrication of the segmental beams, a large number of temporary prestressed channels need to be reserved for each segmental beam. The channels are located on the top and bottom plates of the segmental beams and are reserved vertically. The traditional channel reservation process uses PVC pipes, but this method leads to high construction costs, difficulty in fixing, and easy tilting. Moreover, when the channels are blocked in the later stage, the PVC pipes need to be removed, which is time-consuming and labor-intensive and increases construction costs. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a temporary prestressed hole forming device for a segmental beam to solve the problems of low precision, difficulty in fixing, easy tilting, low construction efficiency and high construction cost in the prior art of reserving temporary prestressed holes.

[0005] The utility model provides a temporary prestressed hole forming device for a segment beam, the hole forming device comprising: a main beam, two supporting structures are respectively arranged at both ends of the main beam; a fixed hole frame is arranged on the main beam between the two supporting structures, and the fixed hole frame has a plurality of reserved holes; a mold rod for setting the prestressed hole can be inserted into the reserved hole.

[0006] Furthermore, the fixed channel frame is composed of an upper panel, a lower panel and side panels for fixing the upper panel and the lower panel; the upper panel has at least one row of reserved channels, and the distance between two adjacent reserved channels in the same row is equal; the lower panel has reserved channels corresponding to the upper panel.

[0007] Furthermore, the side panels are arranged between the upper panel and the lower panel and are fixedly connected.

[0008] Furthermore, the thickness of the upper panel, the lower panel and the side panels is greater than or equal to 5 mm.

[0009] In an implementation manner of the utility model, the support structure is a support block fixedly connected to both ends of the main beam.

[0010] Furthermore, both ends of the main beam are provided with threaded rods, the support block is provided with threaded holes, and the threaded rods are threadedly connected with the threaded holes.

[0011] In the implementation manner of the utility model, a rotation hole is provided at one end of the mold rod, and a pry bar can be inserted into the rotation hole to drive the mold rod to rotate in the concrete.

[0012] In an implementation manner of the utility model, the cross section of the main beam is a square structure.

[0013] According to the above embodiments, the temporary prestressed hole-forming device for segmental beams provided by the utility model has at least the following benefits: the temporary prestressed hole-forming device has a simple structure and is easy to install and operate. It can be accurately positioned and adjusted according to the position on the drawing before installation, greatly improving the position accuracy of the hole-forming and improving the construction efficiency. In addition, the hole-forming device is easy and quick to install and remove, and can be recycled, greatly reducing the construction cost.

[0014] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the present utility model.

[0016] Figure 1 The utility model provides a structural diagram of a temporary prestressed hole-forming device for segmental beams.

[0017] Figure 2 A structural diagram of a mold rod of a temporary prestressed hole forming device for a segmental beam provided by the utility model.

[0018] Figure 3 for Figure 1 Cross-section view at AA in the middle.

[0019] Description of reference numerals:

[0020] 1-main beam, 2-support structure, 3-fixed channel frame, 4-mold rod;

[0021] 31-reserved channel, 32-upper panel, 33-lower panel, 34-side panel;

[0022] 41- Rotating hole. DETAILED DESCRIPTION

[0023] Various exemplary embodiments of the present invention are now described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features and embodiments of the present invention.

[0024] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention will be apparent to those skilled in the art. The present application description and examples are merely exemplary.

[0025] The utility model provides a temporary prestressed hole forming device for a segmental beam, such as Figure 1 and 2 The structure diagram of the hole forming device is shown in FIG. In a specific implementation, the hole forming device comprises: a main beam 1, and two supporting structures 2 are respectively arranged at both ends of the main beam 1.

[0026] A fixed channel frame 3 is provided on the main beam 1 between the two supporting structures 2, and a plurality of reserved channels 31 are provided on the fixed channel frame 3. A mold rod 4 for setting a prestressed channel can be inserted into the reserved channel 31. The mold rod 4 is used to be inserted into the poured concrete and pulled out when the concrete is initially solidified, so as to set a prestressed channel for concrete pouring.

[0027] In the specific implementation of the utility model, Figure 3 As shown, the fixed channel frame 3 is composed of an upper panel 32, a lower panel 33 and a side panel 34 for fixing the upper panel 32 and the lower panel 33. The upper panel 32, the lower panel 33 and the side panel 34 are fixedly connected by welding.

[0028] The upper panel 32 has at least one row of reserved holes 31, and the distances between two adjacent reserved holes 31 in the same row are equal. The lower panel 33 has reserved holes 31 corresponding to those on the upper panel 32. When in use, the main beam 1 spans over the segment beam, and the two ends are supported and fixed on the beam making platform, with the upper panel 32 located at the top and the lower panel 33 located at the bottom, so that the mold rod 4 can be inserted through the reserved holes 31 on the upper panel 32 and the lower panel 33.

[0029] Furthermore, the side plate 34 is disposed between the upper panel 32 and the lower panel 33 and fixedly connected. In this embodiment, the two ends of the side plate 34 are fixedly connected to the upper panel 32 and the lower panel 33 by welding. Because the prestressed ducts of the segmental beams of the same batch are in the same position, the welded main beam 1 and the fixed duct frame 3 can be repeatedly used in the subsequent segmental beam prefabrication process.

[0030] In a specific implementation, the supporting structure 2 is first fixedly set at both ends of the main beam 1, and then the position of the fixed channel frame 3 on the main beam is determined according to the position of the drawing, and then the fixed channel frame 3 is welded and fixed to the main beam 1 by welding. Specifically, the upper panel 32 and the lower panel 33 are firstly welded to the main beam 1 respectively and arranged oppositely. Then, the two side panels 34 are respectively arranged between the upper panel 32 and the lower panel 33, and are located at the two ends of the upper panel 32 and the lower panel 33, and the two ends of the side panels 34 are respectively welded to the upper panel 32 and the lower panel 33.

[0031] In addition, in this embodiment, preferably, the thickness of the upper panel 32, the lower panel 33 and the side panel 34 is greater than or equal to 5 mm.

[0032] In a specific embodiment of the present invention, the support structure 2 is a support block, which is fixedly connected to both ends of the main beam 1. Preferably, the support block can be a square steel structure, and its cross section is a square steel of 5cm*10cm and a thickness of 4mm.

[0033] In one implementation of the support structure 2 of the present invention, the support blocks are fixed to both ends of the main beam 1 by welding.

[0034] In another embodiment of the support structure 2 of the utility model, both ends of the main beam 1 have threaded rods, the support block has threaded holes, and the threaded rods and the threaded holes are threadedly connected. The assembly method of the threaded structure is convenient for installation and disassembly, and it is convenient to install and fix the channel frame 3 on the main beam 1.

[0035] In a specific embodiment of the utility model, a rotation hole 41 is provided at one end of the mold rod 4, and a pry bar can be inserted into the rotation hole 41 to drive the mold rod 4 to rotate in the concrete. When the concrete is initially solidified, the pry bar is inserted into the rotation hole 41, and then the mold rod 4 is rotated by the pry bar to separate it from the concrete, so that the mold rod 4 can be pulled out, and finally a prestressed channel is left on the segment beam.

[0036] In the specific implementation of the utility model, the cross section of the main beam 1 is a square structure. The square steel structure is used for the convenience of welding on the one hand. On the other hand, it is to prevent the fixed channel frame 3 from rotating relative to the main beam 1, so that the mold rod 4 is not easy to shake during the pouring of concrete, thereby improving the accuracy of the reserved channel.

[0037] In this embodiment, the method of using the temporary prestressed hole forming device for the segmental beam is as follows:

[0038] First, before pouring concrete, the main beam 1 is placed across the segmental beam, and the supporting structures at both ends of the main beam 1 are fixed on the beam-making platforms on both sides.

[0039] Furthermore, the fixed channel frame 3 is placed and fixed on the main beam 1 according to the position in the drawing, and then the mold rod 4 is inserted.

[0040] Next, concrete is poured.

[0041] Finally, when the concrete is initially solidified, the mold rod 4 is pulled out, and the channel is formed.

[0042] In summary, the temporary prestressed hole drilling device for segmental beams has a simple structure, is easy to operate, can be recycled, and is quick and easy to install and dismantle. It can also greatly improve the accuracy of the reserved holes and save costs.

[0043] The above description is only an illustrative specific implementation of the present invention. Without departing from the concept and principle of the present invention, any equivalent changes and modifications made by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A temporary prestressed hole forming device for a segmental beam, characterized in that: The hole-forming device comprises: a main beam (1), two ends of the main beam (1) are respectively provided with two supporting structures (2); A fixed channel frame (3) is provided on the main beam (1) between the two supporting structures (2), and the fixed channel frame (3) has a plurality of reserved channels (31); A mold rod (4) for setting a prestressed channel can be inserted into the reserved channel (31).

2. The temporary prestressed hole forming device for segmental beams according to claim 1 is characterized in that: The fixed channel frame (3) is composed of an upper panel (32), a lower panel (33) and a side panel (34) for fixing the upper panel (32) and the lower panel (33); The upper panel (32) has at least one row of the reserved channels (31), and the distance between two adjacent reserved channels (31) in the same row is equal; The lower panel (33) has the reserved channel (31) corresponding to the upper panel (32).

3. The temporary prestressed hole forming device for segmental beams according to claim 2 is characterized in that: The side panel (34) is arranged between the upper panel (32) and the lower panel (33) and is fixedly connected.

4. The temporary prestressed hole forming device for segmental beams according to claim 2, characterized in that: The thickness of the upper panel (32), the lower panel (33) and the side panel (34) is greater than or equal to 5 mm.

5. The temporary prestressed hole forming device for segmental beams according to claim 1, characterized in that: The supporting structure (2) is a supporting block, which is fixedly connected to both ends of the main beam (1).

6. The temporary prestressed hole forming device for segmental beams according to claim 5, characterized in that: Both ends of the main beam (1) are provided with threaded rods, the support block is provided with threaded holes, and the threaded rods are threadedly connected with the threaded holes.

7. The temporary prestressed hole forming device for segmental beams according to claim 1, characterized in that: A rotation hole (41) is provided at one end of the mold rod (4), and a pry bar can be inserted into the rotation hole (41) to drive the mold rod (4) to rotate in concrete.

8. The temporary prestressed hole forming device for segmental beams according to claim 1, characterized in that: The cross section of the main beam (1) is a square structure.

Images