Waterproof sealing device for underwater concrete guide pipe of cast-in-place pile

Abstract

The utility model relates to the technical field of cast-in-place pile waterproof devices, in particular to a waterproof sealing device for an underwater concrete guide pipe of a cast-in-place pile and the cast-in-place pile guide pipe. The water baffle is slidably arranged on the inner wall of the end, close to the discharge port, of the cast-in-place pile guide pipe; the mounting frame is arranged at one end, close to the discharge port, of the cast-in-place pile guide pipe, and a mounting distance is formed between the mounting frame and the discharge port; the sliding assembly comprises a supporting part, a sliding part arranged on one side of the supporting part in the axial direction of the cast-in-place pile guide pipe in a reciprocating sliding mode and a limiting structure arranged between the supporting part and the sliding part, the supporting part is fixed to the mounting frame, and the sliding part is fixed to the side, close to the discharging opening, of the water baffle; the sliding assembly is arranged between the installation frame and the water baffle, the installation frame serves as an installation platform of the sliding assembly, the water baffle can stably slide in or slide out along the inner wall of the cast-in-place pile guide pipe under the limiting effect of the sliding assembly, and the purpose that the water baffle separates water from the cast-in-place pile guide pipe or releases concrete for pouring is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of water-proof devices for cast-in-place piles, and in particular to a water-proof and airtight device for underwater concrete conduits for cast-in-place piles. Background Technology

[0002] With the vigorous promotion and application of pile foundations in the engineering field, the traditional method of water-proofing underwater concrete guide pipes for cast-in-place piles usually adopts a combination of a ring-shaped fixed pipe support and a water baffle at the bottom of the guide pipe. During use, the water baffle is prone to problems such as a small opening angle or failure to open, which cannot meet the requirements of underwater concrete pouring. The guide pipe needs to be removed and the concrete left inside the pipe needs to be cleaned manually. Furthermore, if the concrete inside the pipe is not cleaned in time, the guide pipe may become unusable, which is labor-intensive and time-consuming, affects the quality of underwater concrete pouring of cast-in-place piles, and thus affects the safety of the building structure.

[0003] Meanwhile, the existing combination of water baffle and annular fixed pipe support is not airtight enough, making it easy for water to enter the conduit and hindering the pouring of concrete. Utility Model Content

[0004] To address at least one of the aforementioned technical problems, this utility model proposes a water-tight sealing device for underwater concrete conduits for cast-in-place piles, thereby solving the problems of poor water-tightness of the baffle plate and small opening angle when underwater concrete is poured through the cast-in-place pile conduit.

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

[0006] A watertight sealing device for underwater concrete ducts in cast-in-place piles, characterized in that it comprises:

[0007] A grouting pile guide pipe is used to pour concrete into a grouting pile, and the grouting pile guide pipe has an inlet and an outlet;

[0008] A baffle plate is slidably disposed on the inner wall of the grouting pile guide pipe near the discharge port, and is used to block the water in the grouting pile on the side of the baffle plate near the discharge port.

[0009] The mounting bracket is located at one end of the grouting pile guide pipe near the discharge port, and is at an installation distance from the discharge port;

[0010] The sliding assembly includes a support part, a sliding part that reciprocates along the axis of the grouting pile guide pipe and is disposed on one side of the support part, and a limiting structure disposed between the support part and the sliding part. The support part is fixed to the mounting frame, and the sliding part is fixed to the side of the baffle plate near the discharge port.

[0011] When the baffle plate is subjected to external force, under the limiting action of the limiting structure, the baffle plate slides into or out of the end of the grouting pile guide pipe near the discharge port, thereby achieving water isolation or material discharge of the grouting pile guide pipe.

[0012] Preferably, the sliding part has a sliding groove along the axial direction of the grouting pile guide pipe, and the limiting structure includes:

[0013] A connector is used to connect the support part and the sliding part. The connector is vertically fixed to the support part and vertically inserted into the sliding groove. Under the action of external force, the sliding groove moves back and forth relative to the connector.

[0014] A spring is disposed in the sliding groove along the axial direction of the grouting pile guide pipe. One end of the spring is fixed to the end of the sliding groove near the discharge port, and the other end is a free end.

[0015] Preferably, the limiting structure further includes a spring sleeve, which is movably sleeved on the outside of the spring. One end of the spring sleeve is fixed to the connector, and the other end has longitudinal grooves on both sides along the axial direction of the grouting pile guide tube to facilitate the reciprocating movement of the spring sleeve relative to the sliding part.

[0016] Preferably, the sliding assembly consists of two sets, which are fixed symmetrically to the side of the baffle plate near the discharge port with respect to the axis of the grouting pile guide pipe.

[0017] Preferably, the sliding part includes a vertical plate arranged along the axial direction of the grouting pile guide pipe and a horizontal plate vertically fixed to the end of the vertical plate away from the discharge port;

[0018] The sliding groove is a rectangular groove and is formed on the vertical plate. The horizontal plate has mounting holes and is fixed to the baffle plate by bolts.

[0019] Preferably, the horizontal plate, the vertical plate, and the support portion are all rectangular plates.

[0020] Preferably, the mounting frame includes vertical connecting rods symmetrically fixed to the outside of the grouting pile guide tube and horizontal connecting rods connected between the vertical connecting rods; both the support and the horizontal connecting rods are provided with mounting holes and are fixedly connected by bolts.

[0021] Preferably, the transverse connecting rod is a telescopic connecting rod.

[0022] Preferably, the outer side of the grouting pile guide pipe is symmetrically fixed with mounting parts to facilitate the fixing of the vertical connecting rod.

[0023] Preferably, both the mounting bracket and the sliding assembly are made of stainless steel.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. This utility model sets a sliding component between the mounting frame and the water baffle, and uses the mounting frame as the mounting platform for the sliding component. This allows the water baffle to slide stably into or out along the inner wall of the cast-in-place pile guide pipe under the limiting action of the sliding component, thereby achieving the purpose of the water baffle isolating the cast-in-place pile guide pipe from water or releasing concrete for pouring.

[0026] This device has a simple structure, is easy to install and operate, and can effectively improve the water-tightness of the tremie pipe in cast-in-place piles and the construction efficiency of concrete pouring. Furthermore, this device can be reused, reducing construction costs.

[0027] 2. In this utility model, the cross-section of the connecting member located in the sliding groove is rectangular, which can effectively prevent the sliding part from rotating around the connecting member around its central axis after the water baffle slides out of the grouting pile guide pipe.

[0028] Meanwhile, to facilitate the fixing of the sliding part and the support part, threads are provided at both ends of the connector and locked with nuts. The tightness of the nuts should be such that the sliding part will not slide relative to the support part under its own weight; that is, under the tightening action of the nuts, there should be a certain degree of damping between the sliding part and the support part.

[0029] 3. In this utility model, the transverse connecting rod is a telescopic connecting rod, which can adjust the size of the mounting frame according to actual needs to adapt to grouting pile guide pipes of different diameters and improve the versatility of the device. Attached Figure Description

[0030] Figure 1 A perspective view of a watertight sealing device for underwater concrete ducts used in cast-in-place piles;

[0031] Figure 2 A rear view of a watertight sealing device for underwater concrete ducts used in cast-in-place piles;

[0032] Figure 3 A front view of a watertight sealing device for underwater concrete ducts used in cast-in-place piles;

[0033] Figure 4 A top view of a watertight sealing device for underwater concrete ducts used in cast-in-place piles;

[0034] Figure 5 This is a schematic diagram of the sliding component in this utility model;

[0035] Figure 6 This is a perspective view of the sliding component in this utility model;

[0036] Figure 7 This is an exploded view of the sliding component in this utility model;

[0037] In the diagram: 10, grouting pile guide pipe; 101, installation component; 20, water baffle; 30, mounting frame; 301, vertical connecting rod; 302, horizontal connecting rod; 40, sliding assembly; 401, support part; 402, sliding part; 4021, vertical plate; 40211, sliding groove; 4022, horizontal plate; 403, limiting structure; 4031, connector; 4032, spring; 4033, spring sleeve; 40331, longitudinal groove. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions in this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this utility model, and not all of the embodiments in this utility model.

[0039] Please refer to Figure 1-7 As shown, a watertight sealing device for underwater concrete ducts in cast-in-place piles includes:

[0040] The grouting pile guide pipe 10 is used to pour concrete into the grouting pile. The grouting pile guide pipe 10 has an inlet and an outlet.

[0041] The baffle plate 20 is slidably disposed on the inner wall of the grouting pile guide pipe 10 near the discharge port, and is used to block the water in the grouting pile on the side of the baffle plate 20 near the discharge port.

[0042] The mounting bracket 30 is located at one end of the grouting pile guide pipe 10 near the discharge port and is at an installation distance from the discharge port;

[0043] The sliding assembly 40 includes a support part 401, a sliding part 402 that is reciprocally slidably disposed on one side of the support part 401 along the axis of the grouting pile guide pipe 10, and a limiting structure 403 disposed between the support part 401 and the sliding part 402. The support part 401 is fixed to the mounting frame 30, and the sliding part 402 is fixed to the side of the baffle plate 20 near the discharge port.

[0044] When the baffle plate 20 is subjected to external force, under the limiting action of the limiting structure 403, the baffle plate 20 slides into or out of the end of the grouting pile guide pipe 10 near the discharge port, thereby achieving water isolation or material discharge of the grouting pile guide pipe 10.

[0045] In this embodiment, a sliding component 40 is provided between the mounting frame 30 and the water baffle 20. The mounting frame 30 serves as the mounting platform for the sliding component 40, allowing the water baffle 20 to slide stably into or out of the inner wall of the grouting pile guide pipe 10 under the limiting action of the sliding component 40. This achieves the purpose of the water baffle 20 isolating the grouting pile guide pipe 10 from water or releasing concrete for pouring.

[0046] Specifically, when the duct 10 of the cast-in-place pile extends into the cast-in-place pile, the baffle 20, under the action of the water inside the pile and the limiting action of the sliding component 40, slides along the inner wall of the duct 10 to a set position, thus blocking the water inside the pile below the baffle 20. This prevents water from entering the space above the baffle 20 of the duct 10, ensuring that concrete can be smoothly injected from the duct 10. When the duct 10 extends to the pouring position, concrete is poured into the duct 10 through the inlet. Under the pressure of the concrete, the baffle 20 slides downward along the inner wall of the duct 10 until it slides out of the outlet, allowing the concrete to be smoothly injected into the pile from the outlet.

[0047] It is understandable that the distance between the water baffle 20 and the discharge port of the grouting pile guide pipe 10 can be adjusted by the installation height of the mounting frame 30 and the length of the sliding groove 40211, which can be selected according to the construction needs.

[0048] This device has a simple structure, is easy to install and operate, and can effectively improve the water-proofing effect of the duct pipe 10 in cast-in-place piles and the construction efficiency of concrete pouring. At the same time, this device can be reused, reducing construction costs.

[0049] It should be noted that, in order to improve the service life of the device, both the mounting bracket 30 and the sliding component 40 in this embodiment are made of stainless steel.

[0050] Please refer to Figures 5-7 As shown, in this embodiment, the sliding part 402 has a sliding groove 40211 along the axial direction of the grouting pile guide pipe 10, and the limiting structure 403 includes:

[0051] The connector 4031 is used to connect the support part 401 and the sliding part 402. The connector 4031 is vertically fixed to the support part 401 and is vertically inserted into the sliding groove 40211. Under the action of external force, the sliding groove 40211 moves back and forth relative to the connector 4031.

[0052] Spring 4032 is installed in sliding groove 40211 along the axis of grouting pile guide pipe 10. One end of spring 4032 is fixed to the end of sliding groove 40211 near the discharge port, and the other end is a free end.

[0053] Understandably, when the baffle plate 20 slides upward along the inner wall of the grouting pile guide pipe 10 under the pressure of water, the sliding part 402 moves upward with the baffle plate 20, causing the connecting piece 4031 to generate resistance against the spring 4032, thereby compressing the spring 4032. During this process, the spring 4032 acts as a buffer for the sliding part 402 and the connecting piece 4031, preventing the sliding part 402 from moving rapidly after being subjected to force, thus avoiding a large impact force on the connecting piece 4031 and causing damage to the connecting piece 4031 or the sliding part 402.

[0054] It should be noted that in this embodiment, the sliding groove 40211 is a rectangular groove to prevent the sliding part 402 from rotating around the central axis of the connector 4031. In this embodiment, the cross-section of the connector 4031 located in the sliding groove 40211 is rectangular, which can effectively prevent the sliding part 402 from rotating around the central axis of the connector 4031 after the baffle plate 20 slides out of the grouting pile guide pipe 10.

[0055] Meanwhile, to facilitate the fixing of the sliding part 402 and the support part 401, in this embodiment, the connector 4031 is threaded at both ends and locked with nuts. It is understood that the tightness of the nuts should be such that the sliding part 402 will not slide relative to the support part 401 under its own weight, that is, under the tightening action of the nuts, there is a certain amount of damping between the sliding part 402 and the support part 401.

[0056] Please refer to Figure 3 , Figure 5 and Figure 7 As shown, considering that the spring 4032 is prone to lateral deformation when subjected to external force, in this embodiment, the spring 4032 sleeve is movably sleeved on the outside of the spring 4032. One end of the spring 4032 sleeve is fixed to the connector 4031, and the other end is provided with longitudinal grooves 40331 on both sides along the axial direction of the grouting pile guide pipe 10 to facilitate the reciprocating movement of the spring 4032 sleeve relative to the sliding part 402.

[0057] Specifically, when the baffle plate 20 is subjected to water pressure, the spring 4032 moves upward and contacts the connector 4031, thus compressing the spring 4032. Due to the constraint of the spring 4032 sleeve, the spring 4032 will not undergo lateral deformation when compressed by external force, ensuring effective buffering.

[0058] It should be noted that the length of the spring 4032 sleeve should meet the following requirements: when the spring 4032 moves downward to the lowest position, the upper end of the spring 4032 should be inside the spring 4032 sleeve; the length of the longitudinal groove 40331 of the spring 4032 sleeve should meet the following requirements: when the sliding part 402 moves upward to the highest position of the longitudinal groove 40331, the upper part of the baffle plate 20 (the side near the feed inlet) should at least enter the lower part (discharge outlet) of the grouting pile guide pipe 10.

[0059] Of course, the main function of the aforementioned connector 4031 is to limit the sliding part 402. To prevent the sliding part 402 from rotating relative to the connector 4031, a sliding limiting mechanism can be provided between the sliding part 402 and the support part 401. For example, a limiting groove can be provided on the surface of the support part 401 near the sliding part 402, and a limiting post adapted to the limiting groove can be provided at a corresponding position on the sliding part 402. This ensures that after the baffle plate 20 slides out of the grouting pile guide pipe 10, the sliding part 402 can only slide along the limiting groove and will not deflect.

[0060] Please refer to Figures 5-7 As shown, in this embodiment, the sliding part 402 includes a vertical plate 4021 arranged along the axial direction of the grouting pile guide pipe 10 and a horizontal plate 4022 vertically fixed to the end of the vertical plate 4021 away from the discharge port.

[0061] It should be noted that the aforementioned sliding groove 40211 is formed on the vertical plate 4021. To facilitate the installation of the horizontal plate 4022 and the baffle plate 20, the horizontal plate 4022 has mounting holes and is fixed to the baffle plate 20 with bolts. In this embodiment, the horizontal plate 4022 and the vertical plate 4021 are generally T-shaped. Obviously, in order to increase the structural support strength, the horizontal plate 4022 can be formed by two intersecting pieces to increase the support area and thus reduce the pressure on the baffle plate 20.

[0062] In this embodiment, the horizontal plate 4022, the vertical plate 4021, and the support portion 401 are all rectangular plates.

[0063] It is understandable that, in order to improve the overall pressure bearing capacity of the device, in a preferred embodiment, the sliding components 40 are in two sets and are fixed symmetrically to the side of the baffle plate 20 near the discharge port with respect to the axis of the grouting pile guide pipe 10.

[0064] Please refer to Figures 1-3 As shown, in this embodiment, the mounting frame 30 includes vertical connecting rods 301 symmetrically fixed to the outside of the grouting pile guide tube 10 and horizontal connecting rods 302 connected between the vertical connecting rods 301; the support part 401 and the horizontal connecting rods 302 are both provided with mounting holes and are fixedly connected by bolts.

[0065] It should be noted that, in order to facilitate the overall installation of the sliding assembly 40 at the center of the grouting pile guide tube 10, in this embodiment, the vertical connecting rod 301 is arranged in the radial direction of the grouting pile guide tube 10, that is, the line connecting the two vertical connecting rods 301 at the same height passes through the center of the circle where the grouting pile guide tube 10 is located.

[0066] To accommodate grouted pile guide pipes 10 of different diameters, the dimensions of the mounting frame 30 can be adjusted according to actual needs, improving the versatility of the device. In this embodiment, the transverse connecting rod 302 is a telescopic connecting rod. The telescopic connecting rod structure is prior art and will not be described in detail here.

[0067] Please refer to Figures 1-3 As shown, in order to facilitate the fixed installation of the vertical connecting rod 301, in this embodiment, mounting members 101 are symmetrically fixed on the outer side of the grouting pile guide pipe 10 to facilitate the fixing of the vertical connecting rod 301. The mounting member 101 can be a mounting block with mounting holes or a mounting ear.

[0068] This utility model provides a sliding component 40 between the mounting frame 30 and the water baffle 20, using the mounting frame 30 as the mounting platform for the sliding component 40. This allows the water baffle 20 to slide stably into or out of the inner wall of the grouting pile guide tube 10 under the limiting action of the sliding component 40, thereby achieving the purpose of the water baffle 20 isolating the grouting pile guide tube 10 from water or releasing concrete for pouring.

[0069] This device has a simple structure, is easy to install and operate, and can effectively improve the water-proofing effect of the duct pipe 10 in cast-in-place piles and the construction efficiency of concrete pouring. At the same time, this device can be reused, reducing construction costs.

[0070] The above description is a specific implementation of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A watertight sealing device for underwater concrete guide pipes in cast-in-place piles, characterized in that, include: A grouting pile guide pipe (10) is used to inject concrete into the grouting pile, and the grouting pile guide pipe (10) has an inlet and an outlet; A baffle plate (20) is slidably disposed on the inner wall of the grouting pile guide pipe (10) near the outlet, for blocking the water in the grouting pile on the side of the baffle plate (20) near the outlet. The mounting bracket (30) is located at one end of the grouting pile guide pipe (10) near the discharge port and is at an installation distance from the discharge port; The sliding assembly (40) includes a support (401), a sliding part (402) that is reciprocally slidably disposed on one side of the support (401) along the axis of the grouting pile guide pipe (10), and a limiting structure (403) disposed between the support (401) and the sliding part (402). The support (401) is fixed to the mounting frame (30), and the sliding part (402) is fixed to the side of the baffle plate (20) near the discharge port. When the baffle plate (20) is subjected to external force, the baffle plate (20) slides into or out of the end of the grouting pile guide pipe (10) near the discharge port under the limiting action of the limiting structure (403), thereby realizing the water blocking or material discharge of the grouting pile guide pipe (10).

2. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 1, characterized in that, The sliding part (402) has a sliding groove (40211) along the axial direction of the grouting pile guide pipe (10), and the limiting structure (403) includes: A connector (4031) is used to connect the support part (401) and the sliding part (402). The connector (4031) is vertically fixed to the support part (401) and vertically inserted into the sliding groove (40211). Under the action of external force, the sliding part (402) reciprocates relative to the connector (4031). A spring (4032) is disposed in the sliding groove (40211) along the axial direction of the grouting pile guide pipe (10). One end of the spring (4032) is fixed to the end of the sliding groove (40211) near the discharge port, and the other end is a free end.

3. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 2, characterized in that, The limiting structure (403) also includes a spring (4032) sleeve, which is movably sleeved on the outside of the spring (4032). One end of the spring (4032) sleeve is fixed to the connector (4031), and the other end has longitudinal grooves (40331) on both sides along the axial direction of the grouting pile guide pipe (10) to facilitate the reciprocating movement of the spring (4032) sleeve relative to the sliding part (402).

4. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 1, characterized in that, The sliding components (40) are in two sets and are fixed symmetrically to the water baffle (20) near the discharge port with respect to the axis of the grouting pile guide pipe (10).

5. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 2, characterized in that, The sliding part (402) includes a vertical plate (4021) arranged along the axial direction of the grouting pile guide pipe (10) and a horizontal plate (4022) vertically fixed to the end of the vertical plate (4021) away from the discharge port; The sliding groove (40211) is a rectangular groove and is formed on the vertical plate (4021). The horizontal plate (4022) has mounting holes and is fixed to the water baffle (20) by bolts.

6. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 5, characterized in that, The horizontal plate (4022), the vertical plate (4021), and the support part (401) are all rectangular plates.

7. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to any one of claims 1-6, characterized in that, The mounting bracket (30) includes vertical connecting rods (301) symmetrically fixed to the outside of the grouting pile guide pipe (10) and horizontal connecting rods (302) connected between the vertical connecting rods (301); the support part (401) and the horizontal connecting rods (302) are both provided with mounting holes and are fixedly connected by bolts.

8. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 7, characterized in that, The transverse connecting rod (302) is a telescopic connecting rod.

9. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 7, characterized in that, The outer side of the grouting pile guide pipe (10) is symmetrically fixed with mounting parts (101) to facilitate the fixing of the vertical connecting rod (301).

10. The watertight sealing device for underwater concrete guide pipes for cast-in-place piles according to claim 7, characterized in that, Both the mounting bracket (30) and the sliding assembly (40) are made of stainless steel.

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