Positioning tool for corrugated pipe in prefabricated hollow wall production

Abstract

The utility model relates to prefabricated building accessory technical field, concretely discloses a positioning tool of corrugated pipe in prefabricated hollow wall production, including two support seats, hollow rod is set up between two support seats and is provided with concentric through corrugated pipe setting, the periphery of hollow rod is uniformly provided with a plurality of expansion strips, and both ends of expansion strip are rotatably connected with the stay, the inside of hollow rod is provided with push block, the end of hollow rod is provided with the adjusting assembly that realizes the axial movement of push block, one of two stay of expansion strip is connected with hollow rod, and the other is connected with push block through the strip mouth on the outer wall of hollow rod, the utility model avoids the bending deformation of corrugated pipe in the subsequent grouting and vibrating process under the premise of guaranteeing the effective positioning of corrugated pipe, effectively guarantees the product quality of prefabricated hollow wall prepared.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building components technology, and specifically discloses a positioning tool for corrugated pipes in the production of prefabricated hollow walls. Background Technology

[0002] Prefabricated buildings, as an emerging energy-saving, environmentally friendly, and green building system, have been widely applied. Precast hollow walls, as special precast components with internal corrugated pipes, require the corrugated pipes to be placed in precast molds before concrete pouring. To ensure the accuracy of the corrugated pipe positions after the wall is formed, thus facilitating rapid assembly between wall sections, the corrugated pipes need to be effectively positioned to prevent positional shifts during concrete pouring and vibration, and to avoid bending deformation of the thin-walled middle sections of the corrugated pipes.

[0003] Patent application number 202110012971.8 discloses a method for positioning a bellows with an inwardly recessed inner liner and a bellows positioning fixture. The bellows positioning fixture includes a connecting rod with multiple locking positions that fit with the outer wall of the bellows with a clearance fit. The spacing between the locking positions is the designed spacing between the bellows. The bellows positioning sleeve includes a cylindrical structure and a cap structure. The inner wall of the cylindrical structure fits with the outer wall of the bellows with a clearance fit. The cap structure is located at one end of the cylindrical structure and has a second bolt through hole adapted to the connecting bolts at the end of the bellows inner liner. This invention patent uses the bellows positioning sleeve to fix both ends of the bellows in a prefabricated mold, achieving effective positioning of the bellows to a certain extent. However, during concrete pouring, due to the thin and hollow walls of the corrugated pipe, the concrete slurry causes buoyancy, and the pipe is further fixed at both ends by sleeves, resulting in upward bending deformation in the middle section, which affects the quality of the final wall. Therefore, to address the quality degradation caused by positional misalignment and bending deformation of the corrugated pipe in precast hollow wall production, this application proposes a positioning fixture for the corrugated pipe in precast hollow wall production that effectively solves the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for corrugated pipes in the production of precast hollow walls, so as to solve the technical problem that the corrugated pipes cannot be effectively positioned inside the precast mold in the existing precast hollow wall production process, resulting in the displacement of the corrugated pipes and certain bending deformation during concrete pouring and vibration.

[0005] This utility model is achieved through the following technical solution:

[0006] A positioning fixture for a corrugated pipe in the production of precast hollow walls includes a mold base plate and a corrugated pipe. The upper surface of the mold base plate is formed by multiple end templates to create a grouting mold groove. The corrugated pipe is arranged in the grouting mold groove, with both ends of the corrugated pipe extending out of holes on the end templates. Two support seats are provided on the mold base plate at both ends of the corrugated pipe. A hollow rod is arranged concentrically through the corrugated pipe between the two support seats. Multiple expansion bars are evenly arranged around the hollow rod, and each expansion bar is rotatably connected to a support bar at both ends. A pushing block is provided inside the hollow rod, and an adjustment component for axial movement of the pushing block is provided at the end of the hollow rod. One of the two support bars on the expansion bar is connected to the hollow rod, and the other is connected to the pushing block through a strip-shaped opening on the outer wall of the hollow rod.

[0007] As a further provision of the above scheme, one end of the hollow rod is provided with a threaded hole, the adjustment assembly includes an adjustment screw screwed to the threaded hole, the inner end of the adjustment screw is concentrically rotatably connected to a push rod, and the other end of the push rod is connected to a push block.

[0008] As a further feature of the above solution, a telescopic rod is inserted into the end of the hollow rod on the side away from the adjustment component.

[0009] As a further feature of the above scheme, one of the support seats is fixedly connected to the hollow rod, and the other support seat has a through hole that cooperates with the telescopic rod.

[0010] As a further feature of the above solution, the support base includes a strip plate connected to the base plate of the mold table, a vertically upward adjusting bolt is rotatably connected to the strip plate, a lifting block is threaded onto the adjusting bolt, and a through hole is formed on the lifting block.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this invention, when positioning the corrugated pipe, the holes on the end template are first used to limit the two ends of the corrugated pipe. Then, after the positioning fixture penetrates the corrugated pipe, the expansion bars around the hollow rod are expanded outward synchronously by the adjustment component, thereby tightening and supporting the middle position of the corrugated pipe to prevent deformation at the middle position. Thus, while ensuring the effective positioning of the corrugated pipe, bending deformation of the corrugated pipe is avoided during the subsequent grouting and vibration process, effectively ensuring the product quality of the precast hollow wall.

[0013] The positioning fixture in this invention can also adjust the length of the telescopic rod according to the length of the corrugated pipe, so that it can be used to support the middle section of corrugated pipes of different lengths. At the same time, the support base can also adjust the overall height of the entire positioning fixture to meet the positioning of corrugated pipes at different height positions, thus having a wide range of applications. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the internal structure of the corrugated pipe in this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the hollow rod in this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the support base in this utility model. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-4 This application will be described in detail with reference to the embodiments. Example 1

[0021] Example 1 discloses a positioning fixture for corrugated pipes in the production of precast hollow walls, which will be described below in conjunction with the entire precast hollow wall production device. It includes a mold base plate 1 and a corrugated pipe 2. Four L-shaped end templates 3 are detachably installed on the upper surface of the mold base plate 1 via bolts, forming a rectangular grouting mold groove. A corresponding number of aligned holes are made on two oppositely positioned end templates 3. The corrugated pipe 2 is then placed in the grouting mold groove, with both ends of the corrugated pipe 2 extending out of the holes on the end templates 3. To facilitate the extension of the corrugated pipe 2 into the holes, the diameter of the holes is controlled to be slightly larger than the outer diameter of the corrugated pipe 2, with the difference not exceeding 5mm. Furthermore, to enhance the mechanical properties of the formed precast hollow wall, crisscrossing wall reinforcement bars 4 are arranged in the grouting mold groove.

[0022] The positioning fixture 100 in this embodiment 1 includes support seats 5 at both ends of the corrugated pipe 2. The support seats 5 are also detachably mounted on the upper surface of the mold base plate 1 by bolts. A hollow rod 6, which passes through the corrugated pipe 2 and is concentric with the corrugated pipe 2, is fixedly connected to one of the support seats 5. The other end of the hollow rod 6, which extends out of the corrugated pipe 2, is inserted into a through hole on the other support seat 5. Two to four expansion bars 7 are evenly arranged around the middle position of the hollow rod 6. Each expansion bar 7 has a support bar 8 rotatably connected to both sides of its radial inner end. All the support bars 8 on the same side are rotatably connected to the hollow rod 6. Then, a push block 9 is set inside the hollow rod 6. All the support bars 8 on the other side are connected to the push block 9 through the strip-shaped opening 601 on the outer wall of the hollow rod 6. This allows the expansion bars 7 to move radially contract and radially expand during the axial movement of the push block 9, through the support bars 8.

[0023] A threaded hole communicating with the inner cavity of the hollow rod 6 is opened at the end of the hollow rod 6 which is fixedly connected to the support base 5. An adjusting screw 10 is rotatably connected in the threaded hole. A push rod 11 is rotatably connected to the inner end of the adjusting screw 10. The other end of the push rod 11 is connected to the push block 9, so that the axial movement of the push block 9 can be achieved by rotating the adjusting screw 10 and then by the action of the push rod 11.

[0024] Furthermore, to improve the adaptability of the positioning fixture in Embodiment 1, a telescopic rod 12 is inserted into the end of the hollow rod 6 on the side away from the adjusting screw 10, and the through hole size on the other support 5 matches the telescopic rod 12. Through the above design, the entire positioning fixture can be adapted to position bellows of different lengths by adjusting the extension length of the telescopic rod 12.

[0025] Finally, the support base 5 in this embodiment 1 adopts a segmented design, which includes a strip 501 connected to the base plate 1 of the mold table. Vertically upward adjusting bolts 502 are rotatably connected to both ends of the strip 501. Lifting blocks 503 are threadedly connected to both adjusting bolts 502, and the ends of the hollow rod 6 or telescopic rod 12 are connected to the lifting blocks 503. Through this design, the lifting blocks 503 can be adjusted by rotating the adjusting bolts 502, thereby changing the height of the entire support base 5 to effectively meet the positioning requirements of different horizontal height arrangements of the corrugated pipe.

[0026] The specific preparation steps for precast hollow walls and the positioning steps for corrugated pipes are as follows:

[0027] S1: Arrange the four end templates 3 on the upper surface of the base plate 1 as required, and fix them with bolts to form a rectangular grouting mold groove;

[0028] S2: Arrange the wall reinforcement 4 and corrugated pipe 2 in the grouting mold groove as required, and make sure that both ends of the corrugated pipe 2 extend out of the corresponding holes on the end formwork 3.

[0029] S3: Insert the suspended end of the hollow rod 6 into the bellows 2 until the suspended end protrudes from the bellows 2 and is inserted into the through hole on another support 5. Then fix the two support 5 to the upper surface of the mold base plate 1 with bolts, and adjust the horizontal height of the hollow rod 6 by adjusting the height bolt 502 until the hollow rod 6 is aligned with the central axis of the bellows 2.

[0030] S4: Rotate the adjusting screw 10 to make it screw into the hollow rod 6, then push the push block 9 to move axially through the push rod 11, and then use the support bar 8 to make the expansion bar 7, which was originally gathered on the outer surface of the hollow rod 6, expand radially outward until the support bar 8 abuts against the inner wall of the bellows 2, thereby fixing the bellows 2.

[0031] S5: Pour concrete into the grouting mold and vibrate it to fill the mold. After it has solidified and formed, first remove the positioning fixture 100, and then remove the four end templates 3 to remove the formed precast hollow wall.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 positioning fixture for a corrugated pipe in the production of precast hollow walls, comprising a mold base plate and a corrugated pipe, wherein the upper surface of the mold base plate is surrounded by multiple end templates to form a grouting mold groove, and the corrugated pipe is arranged in the grouting mold groove, characterized in that, Both ends of the corrugated pipe extend through holes in the end template. Two support seats are provided on the base plate of the mold at both ends of the corrugated pipe. A hollow rod is provided concentrically through the corrugated pipe between the two support seats. Multiple expansion bars are evenly arranged around the hollow rod. Both ends of the expansion bars are rotatably connected to support bars. A push block is provided inside the hollow rod. An adjustment component for axial movement of the push block is provided at the end of the hollow rod. One of the two support bars on the expansion bar is connected to the hollow rod, and the other is connected to the push block through a strip-shaped opening on the outer wall of the hollow rod.

2. The positioning fixture for corrugated pipes in the production of precast hollow walls according to claim 1, characterized in that, One end of the hollow rod is provided with a threaded hole, and the adjustment assembly includes an adjustment screw that is screwed into the threaded hole. The inner end of the adjustment screw is concentrically rotatably connected to a push rod, and the other end of the push rod is connected to a push block.

3. The positioning fixture for corrugated pipes in the production of precast hollow walls according to claim 1, characterized in that, A telescopic rod is inserted into the end of the hollow rod on the side away from the adjustment component.

4. The positioning fixture for corrugated pipes in the production of precast hollow walls according to claim 3, characterized in that, One of the support seats is fixedly connected to the hollow rod, and the other support seat has a through hole that matches the telescopic rod.

5. The positioning fixture for corrugated pipes in the production of precast hollow walls according to claim 4, characterized in that, The support base includes a strip plate connected to the base plate of the mold table. A vertically upward adjusting bolt is rotatably connected to the strip plate. A lifting block is threaded onto the adjusting bolt, and a through hole is formed on the lifting block.

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