Picking wing type template structure for preventing cracks around fire box in tunnel

Abstract

The utility model discloses a cantilever wing type template structure for preventing generation of cracks around a fire-fighting box in a tunnel, which comprises a template for manufacturing the fire-fighting box, the template comprises a circumferential outer side frame, the right-angle side of the outer side frame is provided with a long groove, a caulking belt is embedded in each long groove, the caulking belts extend outwards, and the outer side of each caulking belt extends outwards. And a cantilever wing type structure with the template and the shell integrated is formed. According to the wing-lifting type formwork structure capable of preventing the cracks around the fire box in the tunnel, after installation, the wing-lifting type caulking belt can be fixed to the side wall reinforcing steel bars, the wing-lifting type caulking belt is reserved in the structure after formwork removal, and when concrete shrinks, the wing-lifting type caulking belt is extruded and deformed to release shrinkage stress, so that the cracks of the concrete at corners are prevented. And secondly, a limiting structure is additionally arranged at the position of the caulking belt, a cutter is arranged at the position, aligned with the notch, of the supporting frame, and the formwork shell can be taken out smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a cantilevered wing type template structure for preventing cracks from being generated around a fire fighting box in a tunnel. Background Art

[0002] Indoor fire hydrant boxes are the infrastructure for fire protection in buildings. At present, the installation methods of indoor fire hydrant boxes are divided into two methods: concealed installation and exposed installation. Concealed installation is to embed the indoor fire hydrant box into the shear wall of the house. The thickness of the shear wall of the high-rise core tube is gradually increasing. More and more super-high-rise building designs choose to conceal the indoor fire hydrant box and embed the fire hydrant box into the shear wall. After the side wall construction was completed, it was found that long cracks appeared in the stress concentration areas at the corners of most boxes, which had a certain impact on the structural integrity and waterproofness.

[0003] This case was created to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a cantilevered wing template structure for preventing cracks from forming around a fire fighting box in a tunnel, thereby solving the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a cantilever wing template structure for preventing cracks from occurring around a fire extinguishing box in a tunnel, including a template for making a fire extinguishing box, the template including a circumferential outer frame, long grooves are provided on the right-angled sides of the outer frame, and a caulking strip is embedded in each long groove, the caulking strip has an outward extension to form a cantilever wing structure integrated with the template shell.

[0008] Preferably, the long groove is arranged to be through-through front and back, and a bracket is fixedly arranged inside the outer frame to support the outer frame as a whole.

[0009] Preferably, notches are respectively provided on the right-angled sides of the bracket to reserve caulking strips of more sizes.

[0010] Preferably, the front and rear dimensions of the bracket are smaller than the outer frame, and relative gaps are left at the front and rear. A support frame is arranged at the rear side of the bracket, and a cutter is arranged at the notch of the support frame.

[0011] Preferably, a pressing block flush with the edge is provided at the end of each outer frame, and two adjacent pressing blocks are used to clamp the caulking tape on the opposite inner side, wherein a transverse groove is provided on the inner side of each outer frame, a spring is placed in the transverse groove, and the output end of the spring is connected to the pressing block. Under the action of the spring, the pressing block protrudes outward relative to the outer frame.

[0012] Preferably, a wedge is provided in the middle of the outer frame, and the upper and lower parts thereof can be removed from the mold after being pressed. Preferably, a handle is provided on the inner wall of the bracket to facilitate the removal of the bracket.

[0013] (III) Beneficial effects

[0014] After adopting the above technical solution, the utility model has the following advantages compared with the prior art: the utility model has a cantilevered wing formwork structure to prevent cracks around the fire box in the tunnel. After installation, the cantilevered wing caulking strip can be fixed to the side wall steel bars, and left inside the structure after the formwork is removed. When the concrete shrinks, it is squeezed and deformed to release the shrinkage stress, so as to prevent the corner concrete cracks. Secondly, a limiting structure is added at the position of the caulking strip, and a cutter is set at the alignment notch of the support frame, so that the formwork shell can be smoothly removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the utility model;

[0016] Figure 2 This is a disassembly diagram of the utility model;

[0017] Figure 3 For this utility model Figure 2 A is an enlarged schematic diagram of the local structure at center A;

[0018] Figure 4 It is a schematic diagram of the middle and outer side frames of the utility model;

[0019] Figure 5 This is a schematic diagram of the interior of the outer frame of the utility model;

[0020] Figure 6 This is a schematic diagram of the improved disassembly of the utility model.

[0021] In the figure: 1. outer frame; 2. caulking tape; 3. long groove; 4. bracket; 5. notch; 6. supporting frame; 7. cutting knife; 8. pressure block; 9. transverse groove; 10. spring; 11. wedge; 12. handle. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below through the drawings and embodiments.

[0023] The starting point of the design of this application is to install elastic caulking material similar to a waterstop in the right-angle edge area around the template during the production of the box template, so as to form a cantilevered wing structure integrated with the template shell.

[0024] like Figure 1 As shown: a cantilever wing formwork structure for preventing cracks around a fire extinguisher box in a tunnel, including a formwork for making a fire extinguisher box, the formwork including a circumferential outer frame 1, considering that a caulking strip 2 (such as a flexible material such as a silicone strip) needs to be placed in advance as a cantilever wing structure, therefore, a long groove 3 capable of embedding the caulking strip 2 is provided on the right-angle side of the outer frame 1. The caulking strip 2 can be fixed to the side wall steel bars during installation, and left inside the structure after the formwork is removed, so that the shrinkage stress is released by the extrusion deformation when the concrete shrinks, so as to prevent the occurrence of cracks in the corner concrete.

[0025] like Figure 2-4 As shown: considering the entire embedding and subsequent relative stripping of the template, the long groove 3 is set to be through the front and back. At the same time, a bracket 4 is fixedly set inside the outer frame 1 to support the outer frame 1 as a whole. Secondly, notches 5 are respectively set on the right-angle sides of the bracket 4, so that the caulking tape 2 can be accommodated even if the size of the caulking tape 2 is more than that of the inner portion.

[0026] like Figure 2-3 As shown: the front and rear dimensions of the bracket 4 are slightly larger than the outer frame 1, leaving a relative gap. At the same time, a support frame 6 is arranged on the relative rear side of the bracket 4, and a cutter 7 is arranged on the support frame 6 aligned with the notch 5, so that when the outer frame 1 is horizontally withdrawn, the caulking tape 2 embedded in the outer frame 1 and inside can be cut off together, that is, the caulking tape 2 can be left in the right-angle edge area of ​​the side wall after demolding.

[0027] Furthermore, since the caulking strip 2 is difficult to be limited at the preset notch 5 of the outer frame 1, that is, if it is too large / too large, it is easy to be out of the preset position or fall off, and if it is too small, it is difficult to be inserted. Therefore, a limiting structure is added at the position of the caulking strip 2 in this embodiment.

[0028] See attached Figure 4-5 As shown, a pressing block 8 flush with the edge is provided at the end of each outer frame 1, and two adjacent pressing blocks 8 can clamp the caulking strip 2 on the opposite inner side. A transverse groove 9 is provided on the inner side of each outer frame 1, and a spring 10 is placed in the transverse groove 9. The output end of the spring 10 is connected to the pressing block 8. Under normal conditions, the pressing block 8 is slightly protruded relative to the outer frame 1 under the action of the spring 10, so as to better clamp the caulking strip 2 at the limited embedded part.

[0029] Furthermore, considering that the entire formwork is difficult to remove after the concrete is finally set, this solution further improves the outer frame 1 so that the formwork can be quickly removed after the concrete is finally set. Figure 6As shown, a wedge 11 is added in the middle of the outer frame 1, so that the outer frame 1 can slide off at the intersection of the wedge, that is, it is easy to fall off after being pressed up and down, which is convenient for removal.

[0030] Considering recycling, the above design can demould without knocking off four side plates. Simultaneously, a handle 12 can be provided at the inner wall of the support 4 to facilitate taking it out from the supporting frame 6 when demoulding.

[0031] The above-mentioned embodiments are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the scope of the invention. The technical scope of this new type of use is not limited to the content in the specification, and its protection scope must be determined according to the scope of the claims.

Claims

1. A cantilevered wing template structure for preventing cracks around a fire extinguishing box in a tunnel, comprising a template for making a fire extinguishing box, the template comprising a circumferential outer frame, characterized in that: Long grooves are provided on the right-angled sides of the outer frame, and a caulking strip is embedded in each long groove. The caulking strip extends outward to form a cantilevered wing structure integrated with the template shell.

2. The cantilevered wing template structure for preventing cracks around the fire fighting box in the tunnel according to claim 1 is characterized in that: The long groove is arranged to be through-through front and back, and a bracket is fixedly arranged inside the outer frame to support the outer frame as a whole.

3. The cantilevered wing template structure for preventing cracks around the fire fighting box in the tunnel according to claim 2 is characterized in that: Notches are respectively provided on the right-angle sides of the bracket to reserve caulking strips of more sizes.

4. The cantilevered wing template structure for preventing cracks around the fire fighting box in the tunnel according to claim 2 is characterized in that: The front and rear dimensions of the bracket are smaller than the outer frame, and relative gaps are left at the front and rear. A support frame is arranged at the rear side of the bracket, and a cutter is arranged at the notch of the support frame.

5. The cantilevered wing template structure for preventing cracks around the fire fighting box in the tunnel according to claim 1 is characterized in that: A pressing block flush with the edge is arranged at the end of each outer frame, and two adjacent pressing blocks are used to clamp the caulking strips on the opposite inner side, wherein a transverse groove is opened on the inner side of each outer frame, a spring is arranged in the transverse groove, and the output end of the spring is connected to the pressing block.

6. The cantilevered wing template structure for preventing cracks around the fire fighting box in the tunnel according to claim 5, characterized in that: The pressing block protrudes outward relative to the outer frame under the action of the spring.

7. The cantilevered wing template structure for preventing cracks around the fire fighting box in the tunnel according to claim 1 is characterized in that: A wedge opening is provided in the middle of the outer frame, and the upper and lower parts thereof can fall off and be demoulded after being pressed.

8. The cantilevered wing template structure for preventing cracks around the fire fighting box in the tunnel according to claim 2 is characterized in that: A handle is arranged on the inner wall of the bracket.

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