A protective device for installing PVC drainage pipes on reinforced concrete retaining walls

Abstract

The present invention discloses a PVC drainage pipe installation and protection device for reinforced concrete retaining walls, comprising a PVC pipe to be installed and an inner tube arranged inside the PVC pipe, two sliders being slidably installed at both ends of the inner side of the inner tube, the two sliders having opposite sides that are in smooth contact with one end of a slider nut uniformly distributed, the slider being in a truncated cone shape, the other end of the slider nut passing through and extending to the outside of the inner tube, the outer side of the inner tube being provided with uniformly distributed movable support plates, the outer arc surface of the movable support plates supporting the inner wall of the PVC pipe when in the external support state. This invention solves the problem of easy damage to the PVC pipe during concrete pouring, thereby preventing the PVC pipe from deflecting and rotating during the pouring process, and improving the construction quality of the drainage pipe installation; it more comprehensively seals the inner wall of the PVC pipe, and even in the case of partial damage to the PVC pipe, it can still ensure that the external concrete will not enter the interior of the PVC pipe through the damaged part.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete retaining wall construction, and more particularly to a protective device for installing a PVC drainage pipe on a reinforced concrete retaining wall. Background Art

[0002] The purpose of setting up PVC drainage pipes on reinforced concrete retaining walls is to drain the groundwater behind the retaining wall, lower the water level behind the wall, and thus reduce the hydrostatic pressure, ensuring the anti-slip stability of the retaining wall to avoid damage to the retaining wall.

[0003] The construction method for PVC drainage pipes in reinforced concrete retaining walls is as follows: First, cut the pipes according to the design requirements, then secure them to the wall reinforcement with wire at the designed location. During the retaining wall concrete pouring process, PVC drainage pipes are prone to damage and displacement, which can cause loose seals at both ends of the pipes. This can lead to concrete flowing into the pipes, causing blockages, impacting project quality, wasting concrete materials, and increasing costs. Furthermore, conventional methods of securing PVC pipes often expose them to collisions and vibrations during the concrete pouring and tamping and exhaust processes, which can easily damage the pipes. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a reinforced concrete retaining wall PVC drainage pipe installation protection device to solve the problem of pipe damage during concrete pouring. At the same time, it is restricted by the fastening bolts at both ends and the connection with the formwork to avoid the PVC pipe from offsetting and rotating during the pouring process, thereby improving the construction efficiency and quality of the concrete retaining wall.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A PVC drainage pipe installation and protection device for a reinforced concrete retaining wall comprises a PVC pipe to be installed and an inner tube arranged on the inner side of the PVC pipe, two sliders are slidably installed at both ends of the inner side of the inner tube, and the opposite sides of the two sliders are in smooth contact with one end of a slider nut evenly distributed, the slider is truncated, and the other end of the slider nut passes through and extends to the outside of the inner tube, and the outer side of the inner tube is provided with evenly distributed movable support tube plates, and the outer arc surface of the movable support tube plate supports the inner wall of the PVC pipe when in the external support state. The slider nut is located at one end outside the inner tube and is threadedly connected to the adjacent movable support tube plate, and both ends of the PVC pipe are connected to the inner tube sealing plate, and the two ends of the inner tube are respectively in sealing contact with the two inner tube sealing plates, and a fastening bolt is inserted into the inner tube sealing plate, and the fastening bolt is located at one end inside the inner tube and is threadedly connected to the slider.

[0007] As a further description of the above technical solution:

[0008] The outer arc surface of the movable support tube plate is fixedly connected with a rubber plate, and the other surface of the rubber plate is in close contact with the inner wall of the PVC pipe.

[0009] As a further description of the above technical solution:

[0010] The inner cylinder is provided with evenly distributed through-holes, the slider nut is inserted into the inner side of the through-hole and contacts smoothly with the inner wall of the through-hole, and one end of the slider nut located inside the inner cylinder is arc-shaped.

[0011] As a further description of the above technical solution:

[0012] A rubber ring is sleeved on the outer side of the inner cylinder, and the movable support plate is fixedly mounted on the rubber ring. The rubber plate passes through the movable support plate and is integrally formed with the rubber ring. A cavity is provided inside the rubber plate, and an air passage is provided inside the rubber ring, and the air passage is connected to the interior of the cavity. Evenly distributed filling strips are integrally formed on the rubber ring, and the air passage is connected to the interior of the filling strip.

[0013] As a further description of the above technical solution:

[0014] The number of the filling strips is the same as the number of the movable cylinder support plates. The filling strips are spaced apart from the movable cylinder support plates, and the filling strips are located between two adjacent movable cylinder support plates.

[0015] As a further description of the above technical solution:

[0016] The thickness of the rubber plate at its thinnest point is smaller than the thickness of the rubber ring at its thinnest point, and the thickness of the filling strip at its thinnest point is smaller than or equal to the thickness of the rubber plate at its thinnest point.

[0017] As a further description of the above technical solution:

[0018] The inner tube sealing plate is provided with a stepped groove, and the pipe opening of the PVC pipe is butted against the inner side of the stepped groove.

[0019] As a further description of the above technical solution:

[0020] The opposite ends of the two inner cylinder sealing plates are both fixedly connected with sealing gaskets.

[0021] As a further description of the above technical solution:

[0022] The slider nut includes a contact slider, the inner side of which is slidably connected to a push rod, one end of which is located inside the contact slider and is fixedly connected to a piston, the other end of which is threadedly connected to a movable support plate, and a connecting ring is sleeved on the outer side of the inner cylinder, on which the slider nut is inserted;

[0023] The connecting ring is composed of two side rings fixed by screws, and a vent hole connected to the interior of the contact slider is provided, and the vent hole is connected to the cavity between the two side rings. A connecting pipe is fixedly connected between the two connecting rings, and evenly distributed sealing rings are fixedly connected between the two side rings. The sealing ring is sleeved on the contact slider and fixedly connected to the contact slider, and the vent hole is located between two adjacent sealing rings. An inflation tube is fixedly connected to one of the connecting rings, and one end of the inflation tube passes through and extends to the outside of the fastening bolt and is connected to the outside.

[0024] As a further description of the above technical solution:

[0025] The inner wall of the inner cylinder is integrally formed with a convex strip, and the sliding block is provided with a sliding groove that slidably matches the convex strip.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] (1) This solution uses a movable support plate to support the PVC pipe internally. This improves the structural strength of the PVC pipe during the subsequent concrete pouring process, effectively solving the problem of easy damage to the PVC pipe during the concrete pouring process. At the same time, it is restricted by the fastening bolts at both ends and the connection with the formwork, preventing the PVC pipe from deflecting and rotating during the pouring process, thereby improving the construction efficiency of the concrete retaining wall and the installation quality of the drainage pipe.

[0028] (2) This solution enables the protective structure to more comprehensively seal the inner wall of the PVC pipe. Even if the PVC pipe is partially damaged, it can still ensure that the external concrete will not enter the interior of the PVC pipe through the damaged area. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the cross-sectional structure of the protective device after installation of the present invention;

[0030] Figure 2 This is a schematic diagram of the connection structure between the inner tube and the movable support plate of the present invention;

[0031] Figure 3 This is a schematic diagram of the connection structure between the slider and the slider nut of the present invention;

[0032] Figure 4 Schematic diagram of the side cross-sectional structure of the rubber sheet of the present invention;

[0033] Figure 5 This is a schematic diagram of the connection structure between the contact slider and the connecting ring of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the connecting ring of the present invention.

[0035] Description of the numbers in the figure:

[0036] 1. PVC pipe; 2. Inner tube; 3. Slider; 4. Slider nut; 41. Contact slider; 42. Push rod; 43. Connecting ring; 431. Side ring; 432. Connecting tube; 433. Sealing ring; 434. Inflatable tube; 44. Vent; 5. Movable support plate; 6. Inner tube sealing plate; 61. Step groove; 62. Sealing gasket; 7. Fastening bolt; 8. Rubber plate; 81. Cavity; 9. Rubber ring; 91. Air duct; 92. Filling strip. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0038] See also Figure 1-6 , the present invention provides the following embodiment 1:

[0039] 4. The PVC pipe of claim 1 , wherein the PVC pipe is secured to the outer wall of the pipe and is secured to the liner. The PVC pipe is secured to the liner by a secure connection between the liner and the pipe. The PVC pipe is secured to the liner by a secure connection between the liner and the pipe.

[0040] After the PVC pipe 1 is in the pipeline, the pipe 1 is put into the pipeline, and the pipe 1 is put into the pipeline, and the pipe 1 is put into the pipeline. The two ends of the PVC pipe 1 are sealed by the inner tube sealing plate 6. Then the PVC pipe 1 is placed between the templates, and the two inner tube sealing plates 6 are in close contact with the templates on both sides. By inserting the fastening bolts 7 on the template and rotating the fastening bolts 7, the two sliders 3 are driven to move away from each other. During the sliding process, the adjacent slider nuts 4 are squeezed, and the slider nuts 4 are further protruded from the inner tube 2, thereby driving the movable support plate 5 to move outward until the inner wall of the PVC pipe 1 is supported. The internal support of the PVC pipe 1 is completed by the movable support plate 5, and the structural strength of the PVC pipe 1 is improved during the subsequent pouring of concrete, thereby effectively solving the problem of easy damage of the PVC pipe 1 during the concrete pouring process. At the same time, it is restricted by the connection between the fastening bolts 7 at both ends and the template, so that the PVC pipe 1 is prevented from deviating and rotating during the pouring process, thereby improving the construction quality of the drainage pipe installation and setting, and further improving the construction efficiency of the concrete retaining wall.

[0041] The inner tube 2 is provided with evenly distributed through-holes, and the slider nut 4 is inserted into the inner side of the through-holes and in smooth contact with the inner wall of the through-holes. The end of the slider nut 4 located inside the inner tube 2 is arc-shaped; the through-holes on the inner tube 2 facilitate the outward extension of the slider nut 4, and when the slider 3 squeezes the arc-surface end of the slider nut 4, it is convenient for the slider nut 4 to extend.

[0042] Through the provided stepped groove 61, when docking the inner tube sealing plate 6 and the pipe mouth of the PVC pipe 1, firstly, it plays a positioning function, facilitates the docking work between the two, and improves the installation efficiency; secondly, it forms a "convex" structure, the protruding part of which is convenient for connection with the inner tube 2 inside the PVC pipe 1, further forming a sealing structure to prevent external concrete from entering the interior of the PVC pipe 1 and the inner tube 2; the opposite ends of the two inner tube sealing plates 6 are fixedly connected with sealing gaskets 62.

[0043] The sealing gasket 62 increases the connection stability between the inner tube sealing plate 6 and the template, avoids the inner tube sealing plate 6 and the PVC pipe 1 from shaking and causing gaps, and can prevent the external poured concrete from directly entering through the gap of the pipe mouth of the PVC pipe 1.

[0044] See also Figure 1-4 , the present invention further provides Example 2 based on Example 1:

[0045] The outer arc surface of the movable support plate 5 is fixedly connected with a rubber plate 8, and the other surface of the rubber plate 8 is in close contact with the inner wall of the PVC pipe 1;

[0046] The rubber plate 8 can avoid hard contact between the movable support plate 5 and the PVC pipe 1, thereby protecting the PVC pipe 1. At the same time, since the rubber plate 8 is flexible, the contact and fit ability between the rubber plate 8 and the inner wall of the PVC pipe 1 is improved, thereby improving the internal support protection effect.

[0047] A rubber ring 9 is sleeved on the outer side of the inner tube 2, and the movable support plate 5 is fixedly mounted on the rubber ring 9. The rubber plate 8 passes through the movable support plate 5 and is integrally formed with the rubber ring 9. A cavity 81 is provided inside the rubber plate 8, and an air duct 91 is provided inside the rubber ring 9. The air duct 91 is connected to the interior of the cavity 81. Evenly distributed filling strips 92 are integrally formed on the rubber ring 9, and the air duct 91 is connected to the interior of the filling strip 92.

[0048] During the process of the movable support plate 5 supporting the PVC pipe 1, the rubber plate 8 on it will be squeezed, and the air in the cavity 81 will be squeezed out. The squeezed gas will be introduced into the interior of the filling strip 92 through the provided air channel 91. Since the filling strip 92 is a rubber material integrally formed on the rubber ring 9, it has the ability to expand and deform. Therefore, the filling strip 92 expands to fill the gap between the two adjacent movable support plates 5 and contacts the inner wall of the PVC pipe 1, so that the protective structure can more comprehensively support and seal the inner wall of the PVC pipe 1. Even if the PVC pipe 1 is partially damaged, it can still ensure that the external concrete will not enter the interior of the PVC pipe 1 through the damaged part.

[0049] The number of filling strips 92 is the same as the number of movable support plates 5. The filling strips 92 are spaced apart from the movable support plates 5, and the filling strips 92 are located between two adjacent movable support plates 5. The provided filling strips 92 can fully fill the gap between every two movable support plates 5 to ensure the internal support sealing effect.

[0050] The thickness of the thinnest part of the rubber sheet 8 is less than the thickness of the thinnest part of the rubber ring 9, and the thickness of the thinnest part of the filling strip 92 is less than or equal to the thickness of the thinnest part of the rubber sheet 8;

[0051] The thickness of the rubber wall of the cavity 81 and the filling strip 92 is limited. After the rubber sheet 8 and the rubber ring 9 are squeezed, the discharged gas will not expand directly on the rubber ring 9, but will mainly act on the inner wall of the filling strip 92 to complete its expansion.

[0052] See also Figure 1 、 5 In addition to Examples 1 and 2, the present invention further provides Example 3:

[0053] The slider nut 4 includes a contact slider 41, and a push rod 42 is slidably connected to the inner side of the contact slider 41. One end of the push rod 42 located inside the contact slider 41 is fixedly connected to a piston, and the other end of the push rod 42 is threadedly connected to the movable support plate 5. A connecting ring 43 is sleeved on the outer side of the inner cylinder 2, and the slider nut 4 is inserted into the connecting ring 43;

[0054] The connecting ring 43 is composed of two side rings 431 fixed by screws. A vent hole 44 connected to the interior of the contact slider 41 is provided. The vent hole 44 is connected to the cavity between the two side rings 431. A connecting pipe 432 is fixedly connected between the two connecting rings 43. Evenly distributed sealing rings 433 are fixedly connected between the two side rings 431. The sealing rings 433 are sleeved on the contact slider 41 and fixedly connected to the contact slider 41. The vent hole 44 is located between two adjacent sealing rings 433. An inflation tube 434 is fixedly connected to one of the connecting rings 43. One end of the inflation tube 434 passes through and extends to the outside of the fastening bolt 7 and is connected to the outside.

[0055] The contact slider 41 and the push rod 42 form a telescopic structure, and the inflation tube 434 is connected to an external air source such as an air pump to inflate the internal annular cavity of one of the communicating rings 43. Since the two communicating rings 43 are connected through the communicating tube 432, the interiors of the two communicating rings 43 are in a positive pressure state with the same air pressure. Since the interior of each contact slider 41 is connected to the interior of the communicating ring 43 through the vent hole 44, the interior of the contact slider 41 is inflated, and the push rod 42 is pushed outward by the positive pressure inside the contact slider 41. In conjunction with the internal support action of Example 1, when the PVC pipe 1 is hit by stones in the concrete Or when the tamping rod is in contact with vibration during the tamping and exhaust work, the buffer structure of the contact slider 41 and the top rod 42 can absorb the vibration energy and reduce the vibration transmission, so as to avoid the problem that the PVC pipe 1 is easily damaged during the vibration process. The buffering effect of the rubber plate 8 is combined to further improve the shock absorption effect. At the same time, since the buffering capacity of the contact slider 41 and the top rod 42 is determined by the internal air pressure strength, it can be adjusted by changing the inflation amount of the inflation tube 434, which is conducive to adapting the installation according to the strength of the PVC pipe, and the connecting ring 43 is fixed by two side rings 431 with screws, which is convenient for disassembly and assembly, and the operation is simple and quick.

[0056] See also Figure 1 and Figure 3 The inner wall of the inner cylinder 2 is integrally formed with a convex strip, and the slider 3 is provided with a sliding groove that slides and matches the convex strip.

[0057] The convex strip cooperates with the slide groove to prevent the slider 3 from rotating when the fastening bolt 7 is rotated, so that the slider 3 moves with the fastening bolt 7 as the moving axis to squeeze the slider nut 4.

[0058] During dismantling, rotate the fastening bolt 7 in the opposite direction until the fastening bolt 7 is disengaged from the slider 3, then pull out the fastening bolt 7, and then remove the template. Remove the two inner tube blocking plates 6 from both sides of the wave-breaking wall. Since the slider nut 4 loses the restriction of the slider 3 and is elastically retracted by the rubber, the movable support tube plate 5 no longer supports the PVC pipe 1, making it convenient to remove the inner support structure from the PVC pipe 1 for next use.

[0059] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A reinforced concrete retaining wall PVC drainage pipe installation protection device, comprising a PVC pipe to be installed (1) and an inner tube (2) arranged inside the PVC pipe (1), characterized in that: Two sliders (3) are slidably mounted at both ends of the inner side of the inner tube (2). The sliders (3) are truncated cone-shaped. The opposite sides of the two sliders (3) are in smooth contact with one end of a slider nut (4) evenly distributed. The other end of the slider nut (4) penetrates and extends to the outside of the inner tube (2). The outer side of the inner tube (2) is provided with evenly distributed movable support plates (5). The outer arc surface of the movable support plate (5) supports the inner wall of the PVC pipe (1) in the external support state. The end of the slider nut (4) located outside the inner tube (2) is threadedly connected to the adjacent movable support plate (5). Both ends of the PVC pipe (1) are connected to the inner tube sealing plate (6). The two ends of the inner tube (2) are respectively in sealing contact with the two inner tube sealing plates (6). A fastening bolt (7) is inserted into the inner tube sealing plate (6). The end of the fastening bolt (7) located inside the inner tube (2) is threadedly connected to the slider (3).

2. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 1, characterized in that: The outer arc surface of the movable support plate (5) is fixedly connected to a rubber plate (8), and the other surface of the rubber plate (8) is in close contact with the inner wall of the PVC pipe (1).

3. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 1, characterized in that: The inner cylinder (2) is provided with evenly distributed through-holes, and the slider nut (4) is inserted into the inner side of the through-holes and is in smooth contact with the inner wall of the through-holes. One end of the slider nut (4) located inside the inner cylinder (2) is arc-shaped.

4. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 2, characterized in that: The outer side of the inner tube (2) is provided with a rubber ring (9), the movable support plate (5) is fixedly mounted on the rubber ring (9), the rubber plate (8) passes through the movable support plate (5) and is integrally formed with the rubber ring (9), a cavity (81) is provided inside the rubber plate (8), an air duct (91) is provided inside the rubber ring (9), the air duct (91) is communicated with the inside of the cavity (81), and the rubber ring (9) is integrally formed with uniformly distributed filling strips (92), the air duct (91) is communicated with the inside of the filling strip (92).

5. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 4, characterized in that: The number of the filling strips (92) is the same as the number of the movable support cylinder plates (5), the filling strips (92) and the movable support cylinder plates (5) are spaced apart, and the filling strips (92) are located between two adjacent movable support cylinder plates (5).

6. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 4, characterized in that: The thickness of the thinnest part of the rubber plate (8) is less than the thickness of the thinnest part of the rubber ring (9), and the thickness of the thinnest part of the filling strip (92) is less than or equal to the thickness of the thinnest part of the rubber plate (8).

7. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 1, characterized in that: The inner tube sealing plate (6) is provided with a stepped groove (61), and the pipe opening of the PVC pipe (1) is butted against the inner side of the stepped groove (61).

8. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 1, characterized in that: The opposite ends of the two inner cylinder sealing plates (6) are both fixedly connected with sealing gaskets (62).

9. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 1, characterized in that: The slider nut (4) includes a contact slider (41), the inner side of the contact slider (41) is slidably connected to a push rod (42), one end of the push rod (42) located inside the contact slider (41) is fixedly connected to a piston, and the other end of the push rod (42) is threadedly connected to a movable support plate (5), and a connecting ring (43) is sleeved on the outer side of the inner cylinder (2), and the slider nut (4) is inserted into the connecting ring (43); The communication ring (43) is composed of two side rings (431) fixed by screws. The contact slider (41) is provided with a vent hole (44) connected to the interior thereof. The vent hole (44) is connected to the cavity between the two side rings (431). A communication pipe (432) is fixedly connected between the two communication rings (43). Evenly distributed sealing rings (433) are fixedly connected between the two side rings (431). The sealing rings (433) are sleeved on the contact slider (41) and fixedly connected to the contact slider (41). The vent hole (44) is located between two adjacent sealing rings (433). An inflation pipe (434) is fixedly connected to one of the communication rings (43). One end of the inflation pipe (434) passes through and extends to the outside of the fastening bolt (7) and is connected to the outside.

10. The reinforced concrete retaining wall PVC drainage pipe installation protection device according to claim 1, characterized in that: The inner wall of the inner cylinder (2) is integrally formed with a convex strip, and the sliding block (3) is provided with a sliding groove that slidably matches the convex strip.

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