Temporary plugging device for pre-stressed pipe of prefabricated cover beam

Abstract

The utility model relates to the technical field of cover beam machining, in particular to a prefabricated cover beam prestressed pipe temporary plugging device which comprises a plug and a sealing plate, the plug is fixed to one side of the sealing plate, the sealing plate is an elastic rubber mat, a prestressed pipe comprises a first connecting pipe and a second connecting pipe, and the first connecting pipe is fixed to the end of the second connecting pipe; a first through hole is formed in the middle of the first connecting pipe, a second through hole is formed in the second connecting pipe, the first through hole is communicated with the second through hole, the plug is detachably inserted into the first through hole, and the side, close to the second connecting pipe, of the sealing plate abuts against the pipe wall of the second connecting pipe. And the amount of concrete permeating into the prestressed pipe orifice in the pouring process can be reduced, the working intensity of operators is reduced, and later prestressed tensioning operation is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of cap beam processing, and in particular to a temporary plugging device for prestressed pipes of a prefabricated cap beam. Background Art

[0002] During the construction of prestressed cap beams, the main process of prefabricated and assembled bridge segments is factory prefabrication, component transportation, and on-site lifting on cast pile foundations or pedestals.

[0003] A prefabricated bridge is a combination of a steel cage structure and concrete. When the steel cage is hoisted onto a pile foundation or pedestal by a crane, concrete formwork needs to be installed around the steel cage structure so that multiple concrete formworks can be spliced ​​together to form a casting cavity, and then concrete is poured into the casting cavity so that the concrete covers the entire steel cage structure. After cooling and shaping, a prefabricated bridge is obtained.

[0004] However, in actual application, since the prestressed pipe is pre-buried and installed in the steel cage structure, the fit between the port of the prestressed pipe and the concrete formwork is poor, when pouring concrete into the pouring cavity, part of the concrete will penetrate into the prestressed pipe port, which further makes it impossible to directly install steel strands in the prestressed pipe. In the prior art, operators are often required to manually chisel open the concrete at the prestressed pipe port before proceeding to the next step, which increases the workload of the operators. Summary of the invention

[0005] In order to reduce the amount of concrete that seeps into the prestressed pipe opening during the pouring process, the present application provides a temporary plugging device for the prestressed pipe of a prefabricated cap beam, which can reduce the workload of operators and facilitate subsequent prestressing tensioning operations.

[0006] The present application provides a temporary plugging device for prefabricated cap beam prestressed pipe, which adopts the following technical solution:

[0007] A temporary plugging device for a prefabricated cap beam prestressed pipe comprises a plug and a sealing plate, wherein the plug is fixed on one side of the sealing plate, the sealing plate is an elastic rubber pad, the prestressed pipe comprises a first connecting pipe and a second connecting pipe, the first connecting pipe is fixed to the end of the second connecting pipe, a first through hole is provided in the middle of the first connecting pipe, a second through hole is provided in the second connecting pipe, the first through hole is connected to the second through hole, the plug is detachably inserted into the first through hole, and the side of the sealing plate close to the second connecting pipe abuts against the pipe wall of the second connecting pipe.

[0008] By adopting the above technical solution, the plug is first detachably inserted into the first through hole, and the side of the sealing plate close to the second connecting pipe is abutted against the pipe wall of the second connecting pipe, so that the pipe mouth of the prestressed pipe can be blocked. When the operator pours concrete into the pouring cavity, due to the elasticity of the sealing plate, by setting the sealing plate, on the one hand, it can play a leveling role, and can reduce the distance between the concrete template and the prestressed pipe, so that the quality of the formed prefabricated bridge is better; on the other hand, it can provide a sealing effect, and can isolate the external concrete from entering the prestressed pipe, so as to facilitate the subsequent prestressing tensioning operation, and also avoid the operator from the process of chiseling out the concrete, which helps to reduce the work intensity of the operator.

[0009] Preferably, a prestressed steel strand is disposed in the first connecting hole of the first connecting pipe, and at least one jack is disposed in the second connecting hole of the second connecting pipe, and an output end of the jack is assembled with the prestressed steel strand.

[0010] By adopting the above technical solution, the jack has good supporting ability. By arranging at least one jack in the second connecting hole and assembling the output end of the jack with the prestressed steel strand, the prestressed steel strand can be firmly assembled in the prestressed pipe. At the same time, the jack can reduce concentrated stress, making the entire structure safer and more reliable.

[0011] Preferably, the plug includes an insertion portion, the insertion portion is a trapezoidal structure, and the insertion portion is plugged into the first through hole.

[0012] By adopting the above technical solution, the insertion part is plugged into the first through hole, so that the connection between the plug and the first connecting pipe can be achieved. The insertion part is a trapezoidal structure, which can provide a guide for the insertion or removal process, helping to improve convenience.

[0013] Preferably, a plurality of connecting ribs are fixed to the outer wall of the inserting portion, the plurality of connecting ribs are evenly arranged, and the extending direction of the connecting ribs is consistent with the length direction of the inserting portion.

[0014] By adopting the above technical solution, a number of connecting ribs are fixed on the outer wall of the insertion part. On the one hand, it can enhance the structural strength of the insertion part, so that the insertion part can maintain its original shape and structure without deformation during the pouring of concrete. On the other hand, it can reduce the contact area between the insertion part and the tube wall of the first connecting tube to a certain extent, so that the insertion part can be better disassembled and assembled.

[0015] Preferably, the plug includes an avoidance portion, which is fixed at one end of the insertion portion, and the avoidance portion is distributed in the second connecting pipe. A avoidance hole is penetrated through the side wall of the avoidance portion, and the output end of the jack passes through the avoidance hole to be assembled with the prestressed steel strand.

[0016] By adopting the above technical solution, an avoidance hole is opened through the side wall of the avoidance part, and the output end of the jack passes through the avoidance hole and is assembled with the prestressed steel strand, which can improve adaptability and reduce interference between mechanisms.

[0017] Preferably, the sealing plate is a rubber plate or a silicone plate.

[0018] By adopting the above technical solution, the sealing plate is a rubber plate or a silicone plate, so that the sealing plate has good elasticity, sealing, wear resistance and pressure resistance, which is helpful to seal the pipe opening of the prestressed pipe and improve the connection density between the two.

[0019] Preferably, a weight-reducing hole is provided through the middle of the insertion portion, and the prestressed steel strand passes through the weight-reducing hole.

[0020] By adopting the above technical solution, a weight-reducing hole is opened through the middle of the insertion part, which can save the cost and make the plug lighter and easier to hoist.

[0021] Preferably, it comprises a connecting portion, which is fixed on the side wall of the sealing plate, and the connecting portion is adapted to be plugged with the port of the second connecting pipe.

[0022] By adopting the above technical solution, the connecting portion is adapted and plugged into the port of the second connecting pipe, which can further improve the connection density between the entire blocking structure and the prestressed pipe.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. First, the plug is detachably inserted into the first through hole, and the side of the sealing plate close to the second connecting pipe is in contact with the pipe wall of the second connecting pipe, so that the pipe mouth of the prestressed pipe can be blocked. When the operator pours concrete into the pouring cavity, the sealing plate has elasticity. By setting the sealing plate, on the one hand, it can play a leveling role, which can reduce the distance between the concrete formwork and the prestressed pipe, so that the quality of the formed prefabricated bridge is better; on the other hand, it can provide a blocking effect, which can isolate the external concrete from entering the prestressed pipe, so as to facilitate the subsequent prestressing tensioning operation, and also avoid the operator from the process of chiseling concrete, which helps to reduce the work intensity of the operator;

[0025] 2. The jack has good supporting ability. By arranging at least one jack in the second connecting hole and assembling the output end of the jack with the prestressed steel strand, the prestressed steel strand can be firmly assembled in the prestressed pipe. At the same time, the jack can reduce concentrated stress and make the entire structure safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the coordination of the plugging device, the prestressed pipe, and the prestressed steel strand in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the coordination of the plugging device and the prestressed pipe in the embodiment of the present application.

[0029] Explanation of the reference numerals: 1. Plug; 11. Insertion portion; 111. Connecting rib; 112. Weight-reducing hole; 12. Avoidance portion; 121. Avoidance hole; 2. Sealing plate; 3. Prestressed pipe; 31. First connecting pipe; 311. First through hole; 32. Second connecting pipe; 321. Second through hole; 4. Jack; 5. Prestressed steel strand; 6. Connecting portion. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiment of the present application discloses a temporary plugging device for prestressed pipes of a prefabricated cap beam.

[0032] Reference Figure 1 and Figure 2 A temporary sealing device for a prefabricated cap beam prestressed pipe includes a plug 1 and a sealing plate 2. The plug 1 is fixed on one side of the sealing plate 2. The sealing plate 2 is an elastic rubber pad. In the present application, the sealing plate 2 is a rubber plate or a silicone plate, so that the sealing plate 2 has good elasticity, sealing, wear resistance and pressure resistance, thereby helping to seal the pipe mouth of the prestressed pipe 3 and improve the connection density between the two.

[0033] Reference Figure 1 and Figure 2 The prestressed tube 3 includes a first connecting tube 31 and a second connecting tube 32. The first connecting tube 31 is fixed to the end of the second connecting tube 32. A first through hole 311 is opened in the middle of the first connecting tube 31, and a second through hole 321 is opened in the second connecting tube 32. The first through hole 311 is connected to the second through hole 321. The plug 1 is detachably inserted into the first through hole 311, and the side of the sealing plate 2 close to the second connecting tube 32 abuts against the tube wall of the second connecting tube 32.

[0034] Specifically, the plug 1 includes an insertion portion 11 and an avoidance portion 12, wherein the insertion portion 11 is a trapezoidal structure, and the insertion portion 11 is plugged into the first through hole 311, so as to realize the connection between the plug 1 and the first connecting pipe 31. The insertion portion 11 is a trapezoidal structure, which can provide a guide for its insertion or removal process. In addition, a plurality of connecting ribs 111 are fixed to the outer wall of the insertion portion 11, and the plurality of connecting ribs 111 are evenly arranged, and the extension direction of the connecting ribs 111 is consistent with the length direction of the insertion portion 11. On the one hand, it can enhance the structural strength of the insertion portion 11, so that the insertion portion 11 can maintain its original shape and structure without deformation during the pouring of concrete. On the other hand, it can reduce the contact area between the insertion portion 11 and the pipe wall of the first connecting pipe 31 to a certain extent, so that the insertion portion 11 can be better disassembled and assembled. At the same time, a weight-reducing hole 112 is opened through the middle of the insertion portion 11, and the prestressed steel strand 5 passes through the weight-reducing hole 112 to save the cost and make the plug 1 lighter and easier to hoist.

[0035] Reference Figure 2 and Figure 3 The avoidance portion 12 is fixed at one end of the insertion portion 11 , and the avoidance portion 12 is distributed in the second connecting pipe 32 . A side wall of the avoidance portion 12 is penetrated to form an avoidance hole 121 .

[0036] In order to further improve the connection density between the sealing structure and the prestressed pipe 3, the sealing structure also includes a connecting portion 6, which is fixed to the side wall of the sealing plate 2. The connecting portion 6 is adapted to be plugged into the port of the second connecting pipe 32. After the two are assembled, the inner side surface of the connecting portion 6 abuts against the outer side surface of the second connecting pipe 32.

[0037] When the operator pours concrete into the pouring cavity, the plug 1 is first detachably inserted into the first through hole 311, and the side of the sealing plate 2 close to the second connecting pipe 32 is in contact with the pipe wall of the second connecting pipe 32, and the connecting portion 6 is adapted to be plugged with the port of the second connecting pipe 32, so that the pipe mouth of the prestressed pipe 3 can be blocked. Since the sealing plate 2 is elastic, by setting the sealing plate 2, on the one hand, it can play a leveling role, and can reduce the distance between the concrete template and the prestressed pipe 3, so that the quality of the formed prefabricated bridge is better; on the other hand, it can provide a blocking effect, which can isolate the external concrete from entering the prestressed pipe 3, and then, concrete is poured in the casting cavity formed by splicing the concrete template, so that the concrete covers the entire steel cage structure, and the prefabricated bridge is obtained after cooling and shaping, and then the concrete template and the blocking device are removed.

[0038] The operator inserts the prestressed steel strand 5 into the first connecting hole of the first connecting pipe 31, and at least one jack 4 is arranged in the second connecting hole of the second connecting pipe 32, so that the output end of the jack 4 is assembled with the prestressed steel strand 5, that is, the output end of the jack 4 passes through the avoidance hole 121 and is assembled with the prestressed steel strand 5, which can improve the adaptability and reduce the interference between the mechanisms. Here, the jack 4 has good supporting ability, so that the prestressed steel strand 5 can be firmly assembled in the prestressed pipe 3. At the same time, the jack 4 can reduce concentrated stress, making the entire structure safer and more reliable, thereby realizing the prestressed tensioning operation of the prestressed pipe 3.

[0039] The above are all preferred embodiments of the present application. The embodiments are only explanations of the present application and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A temporary plugging device for prefabricated cap beam prestressed pipe, characterized in that: The prestressed tube (3) comprises a plug (1) and a sealing plate (2), wherein the plug (1) is fixed to one side of the sealing plate (2), the sealing plate (2) is an elastic rubber pad, the prestressed tube (3) comprises a first connecting tube (31) and a second connecting tube (32), the first connecting tube (31) is fixed to the end of the second connecting tube (32), a first through hole (311) is provided in the middle of the first connecting tube (31), and a second through hole (321) is provided in the second connecting tube (32), the first through hole (311) is connected to the second through hole (321), the plug (1) is detachably inserted into the first through hole (311), and a side of the sealing plate (2) close to the second connecting tube (32) abuts against the tube wall of the second connecting tube (32).

2. The blocking device according to claim 1, characterized in that: A prestressed steel strand (5) is arranged in the first communicating hole of the first connecting pipe (31), and at least one jack (4) is arranged in the second communicating hole of the second connecting pipe (32), wherein the output end of the jack (4) is assembled with the prestressed steel strand (5).

3. The blocking device according to claim 2, characterized in that: The plug (1) comprises an insertion portion (11), the insertion portion (11) is a trapezoidal structure, and the insertion portion (11) is plugged into the first through hole (311).

4. The blocking device according to claim 3, characterized in that: A plurality of connecting ribs (111) are fixed to the outer wall of the insertion portion (11); the plurality of connecting ribs (111) are evenly arranged, and the extending direction of the connecting ribs (111) is consistent with the length direction of the insertion portion (11).

5. The blocking device according to claim 3, characterized in that: The plug (1) comprises an escape portion (12), the escape portion (12) being fixed to one end of the insertion portion (11), the escape portion (12) being distributed in the second connecting pipe (32), a side wall of the escape portion (12) being penetrated by an escape hole (121), and the output end of the jack (4) passing through the escape hole (121) is assembled with the prestressed steel strand (5).

6. The blocking device according to any one of claims 1 to 5, characterized in that: The sealing plate (2) is a rubber plate or a silicone plate.

7. The blocking device according to claim 3, characterized in that: A weight-reducing hole (112) is provided through the middle of the insertion portion (11), and the prestressed steel strand (5) passes through the weight-reducing hole (112).

8. The blocking device according to claim 1, characterized in that: It comprises a connecting portion (6), wherein the connecting portion (6) is fixed to the side wall of the sealing plate (2), and the connecting portion (6) is adapted to be plugged into a port of the second connecting pipe (32).

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