Anti-disengagement structure of small-pipe-diameter concrete pipe mounting connector

Abstract

The utility model discloses an anti-disengagement structure of a small-pipe-diameter concrete pipe installation interface, one end of the small-pipe-diameter concrete pipe is a socket end, the other end of the small-pipe-diameter concrete pipe is a spigot end, two adjacent sections of small-pipe-diameter concrete pipes are connected by inserting the spigot end into the socket end, and an arc-shaped clamping groove is arranged at the lower part of the joint of the spigot end and the socket end. A plurality of reserved grooves distributed in the radial direction of the cambered surface are formed in the arc-shaped inner wall of the arc-shaped clamping groove. According to the anti-disjunction structure, the anti-sedimentation effect of the connector is good, the deformation resisting capacity is high, uneven sedimentation of the pipeline can be effectively eradicated through the arc-shaped clamping groove, and even if uneven sedimentation of a pipe section foundation is caused by external reasons in the later period, the structure measure of the connector enables the pipeline to obtain buffering capable of resisting deformation; the connector is good in durability and corrosion resistance, does not need to be maintained again in the operation period, achieves double water stopping through the tooth-shaped elastic sealing water stopping ring and the polysulfide sealant, is excellent in water stopping or water proofing effect of the pipeline connector, and is simple in structure and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of underground pipeline construction, in particular to an anti-disconnection structure for an installation interface of a small-diameter concrete pipe. Background Art

[0002] All commercially available concrete pipes are manufactured and controlled in accordance with national standards. Multiple on-site production tests have shown that even when assembled on flat surfaces, disjointing issues persist. Manufacturers have implemented various control measures, including mold replacement, factory-finished surface polishing, and optimized pipe materials. However, during actual construction, disjoints of 3-4 cm between DN300-500 pipes still occur, making it difficult to meet the requirements of relevant technical regulations.

[0003] Given that small-diameter reinforced concrete pipes are currently used for stormwater pipes, joint disconnection and misalignment are common, leading to frequent and difficult maintenance. Therefore, research and optimization of pipe disconnection issues are urgently needed, starting with structural measures to address these issues. Utility Model Content

[0004] The utility model aims to provide an anti-disconnection structure for the installation interface of a small-diameter concrete pipe, which has a simple structure, is easy to operate, has good interface stability, and is not prone to defects such as disconnection and misalignment.

[0005] The utility model is achieved through the following technical solutions: an anti-disconnection structure for a small-diameter concrete pipe installation interface, wherein one end of the small-diameter concrete pipe is a socket end, and the other end is a spigot end, and two adjacent sections of small-diameter concrete pipes are connected by inserting the spigot ends into the socket ends, and an arc-shaped groove is provided at the lower part of the connection between the spigot end and the bell end, and the arc-shaped inner wall of the arc-shaped groove is provided with a plurality of reserved grooves distributed radially along the arc surface.

[0006] This technical solution works as follows: Before construction, a custom arc-shaped slot mold is placed on a flat surface. Fine stone concrete (recommended strength of no less than C25) is poured and compacted. Once the concrete reaches the required strength, it is demolded and cured, and then stacked as required for future use. The concrete-cast arc-shaped slot is placed where two small-diameter concrete pipes meet, with the pipe joint facing the slot. First, the spigot end of the pipe is fitted with a toothed elastic sealing ring and coated with polysulfide sealant. It is then positioned in the center of the slot. The socket end of the pipe, which is fixed with the upper load-transmitting sealing ring, is then placed in the center of the slot in the same manner. Finally, the pipe is pulled simultaneously at both ends of the pulling hoist to its maximum capacity, which can be verified by marking the scale. After approximately 2 hours of holding, the hoist is released and CCTV is used to inspect the installation results. If there is any fluctuation at the pipe end, the reserved slot can be used for adjustment.

[0007] In order to better realize the present invention, further, a force-transmitting rubber gasket is fixedly provided on the end face of the socket end, and when the socket end is connected to the socket end, the force-transmitting rubber gasket abuts against the end face of the socket end.

[0008] In order to better realize the present utility model, further, the socket end is also nested with a sealing water stop ring, and the outer surface of the socket end is also provided with a polysulfide sealant layer. When the socket end is connected to the socket end, the sealing water stop ring abuts against the inner wall of the socket end, and the polysulfide sealant layer fills the gap between the socket end and the socket end.

[0009] In order to better realize the present invention, further, the inner side of the sealing water stop ring is a water-swelling rubber layer, and the outer side is a toothed neoprene rubber layer.

[0010] In order to better realize the present invention, further, fixing spikes are provided at the bottom of the arc-shaped slot.

[0011] In order to better realize the present invention, further, the arc-shaped inner wall of the arc-shaped slot is provided with five reserved grooves distributed radially along the arc surface, and the arc spacings between adjacent reserved grooves are equal.

[0012] In order to better implement the present invention, further, the reserved groove is a square groove of 20 mm×20 mm.

[0013] In order to better realize the present utility model, further, the force-transmitting rubber gasket is a rubber ring with a width of 5 mm.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] (1) The anti-disconnection structure provided by the utility model has a good anti-settlement effect on the interface and a strong ability to resist deformation. The arc-shaped slot can effectively prevent uneven settlement of the pipeline. Even if the foundation of the pipe section undergoes uneven settlement due to external reasons in the later stage, the structural measure of the interface will provide the pipeline with a buffer that can resist deformation;

[0016] (2) The anti-slip structure provided by the utility model has good interface durability and corrosion resistance, and does not require further maintenance during the operation period. Through the double water-stopping of the toothed elastic sealing water stop ring and polysulfide sealant, the water-stopping or waterproofing effect of the pipeline interface is extremely excellent;

[0017] (3) The anti-disconnection mechanism provided by the utility model has a simple structure, is easy to operate, has good interface stability, and will not cause defects such as disconnection and misalignment in the pipeline. It has a good use effect and is suitable for wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the longitudinal section of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the sealing water stop ring in the utility model.

[0022] Among them: 1 - small diameter concrete pipe, 11 - socket end, 12 - spigot end, 2 - arc-shaped slot, 21 - reserved slot, 22 - fixing foot nail, 3 - force transmission rubber ring, 4 - sealing water stop ring, 41 - water-expanding rubber layer, 42 - neoprene rubber layer, 5 - polysulfide sealant layer. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] The main structure of this embodiment is as follows: Figure 1 , Figure 2 As shown, one end of the small-diameter concrete pipe 1 is a socket end 11, and the other end is a spigot end 12. Two adjacent sections of small-diameter concrete pipes 1 are connected by inserting the spigot end 12 into the socket end 11. It is characterized in that an arc-shaped groove 2 is provided at the lower part of the connection between the spigot end 12 and the bell end 11, and the arc-shaped inner wall of the arc-shaped groove 2 is provided with a plurality of reserved grooves 21 distributed radially along the arc surface.

[0028] The specific installation process is as follows: after the small diameter concrete pipe 1 is inspected after it arrives at the site, the center line of the pipe joint of the qualified small diameter concrete pipe 1 is placed on the cushion layer according to the pipeline layout, and the line is marked. Then, the prefabricated arc slot 2 is placed in the position where it has been placed, and the arc slot is fixed to prevent the arc slot from moving when the pipeline is pulled. The prepared small diameter concrete pipe 1 is placed at the center of the arc slot 2, and the prepared small diameter concrete pipe 1 is also placed at the center of the arc slot 2; the hand chain hoist is installed, and the scale mark is painted on the outer wall of the pipeline; both sides are pulled together at the same time until the socket end 11 and the spigot end 12 reach the scale line position, and then the pulling force is slightly increased and maintained for about 2 hours. During this process, pay attention to whether the interface has fluctuations. If so, it can be adjusted through the reserved slot 21; loosen the hand chain hoist and continue to install the next small diameter concrete pipe 1 with the same steps.

[0029] Example 2:

[0030] On the basis of the above embodiment, this embodiment further adds a force transmission rubber ring 3, such as Figure 1 , Figure 2 As shown, a force-transmitting rubber gasket 3 is fixedly mounted on the end face of the bell end 11. When the spigot end 12 is connected to the bell end 11, the force-transmitting rubber gasket 3 abuts the end face of the spigot end 12. Given that pipe joints are typically relatively weak, the force-transmitting rubber gasket 3 primarily serves to protect the spigot end 12 from damage during the pipe tensioning and tightening process. The remainder of this embodiment is identical to the previous embodiment and will not be further elaborated.

[0031] Example 3:

[0032] On the basis of the above embodiment, this embodiment further adds a sealing water stop ring 4 and a polysulfide sealant layer 5, such as Figure 1 , Figure 2As shown, the socket end 12 is also embedded with a sealing water stop ring 4, and the outer surface of the socket end 12 is also provided with a polysulfide sealing adhesive layer 5. When the socket end 12 is connected to the socket end 11, the sealing water stop ring 4 abuts against the inner wall of the socket end 11, and the polysulfide sealing adhesive layer 5 fills the gap between the socket end 12 and the socket end 11. The main function of the sealing water stop ring 4 and the polysulfide sealing adhesive layer 5 is to fill the gap between the socket end and the socket end of the pipe section to achieve waterproof and water-stopping. The other parts of this embodiment are the same as the above embodiment and will not be repeated here.

[0033] Example 4:

[0034] Based on the above embodiment, this embodiment further defines the structure of the sealing water stop ring 4, such as Figure 3 As shown, the inner side of the sealing water stop ring 4 is a water-swelling rubber layer 41, and the outer side is a toothed chloroprene rubber layer 42. The main function of the sealing water stop ring 4 is waterproofing, so the inner side is a water-swelling rubber layer 41. This rubber layer can swell in rainwater, sealing small gaps to prevent water leakage. The outer chloroprene rubber layer 42 has good toughness and wear resistance. Its toothed structure gives it a certain elasticity, which does not affect the plug-in installation of the socket end 12 and the socket end 11. The other parts of this embodiment are the same as the above embodiment and will not be repeated.

[0035] Example 5:

[0036] Based on the above embodiment, this embodiment further defines the structure of the arc-shaped slot 2, such as Figure 1 , Figure 2 As shown, the bottom of the arc-shaped slot 2 is also provided with a fixing foot 22. The fixing foot 22 is provided mainly to fix the arc-shaped slot, which can effectively prevent the arc-shaped slot from moving when the pipes are pulled together. The rest of this embodiment is the same as the above embodiment and will not be repeated here.

[0037] Example 6:

[0038] Based on the above embodiment, this embodiment further defines the structure of the arc-shaped slot 2, such as Figure 1 , Figure 2 As shown, the arc-shaped inner wall of the arc-shaped slot 2 is provided with five reserved slots 21 distributed radially along the arc surface, with the arc spacing between adjacent reserved slots 21 being equal. The purpose of the reserved slots 21 is to fine-tune the undulating small-diameter concrete pipe 1. Too many arc-shaped slots 2 will affect the support provided by the arc-shaped slot 2 to the small-diameter concrete pipe 1. Therefore, the preferred number of reserved slots 21 is five. This does not affect the supporting effect of the arc-shaped slot, while still ensuring fine-tuning of the undulating small-diameter concrete pipe 1 from multiple angles. The rest of this embodiment is the same as the above embodiment and will not be repeated here.

[0039] Example 7:

[0040] This embodiment further refines the structure of the curved groove 2, creating a 20 mm x 20 mm square groove. The reserved groove 21 is designed to allow for fine-tuning of the contours of the small-diameter concrete pipe 1. An overly large curved groove 2 would impair its support for the small-diameter concrete pipe 1. Therefore, a 20 mm x 20 mm square groove is preferred. This allows for fine-tuning of the contours of the small-diameter concrete pipe 1 without compromising the curved groove's support. The remainder of this embodiment is identical to the previous embodiment and will not be further elaborated.

[0041] Example 8:

[0042] This embodiment, based on the above embodiment, further specifies the material of the force-transmitting rubber gasket 3, which is a 5mm wide rubber ring. To ensure effective protection of the spigot end 12 and the socket end 11, a 5mm wide rubber ring is preferred. This provides protection without affecting normal operation and is relatively low in cost. This rubber ring can be purchased directly from the market, eliminating the need for custom fabrication. The remainder of this embodiment is identical to the above embodiment and will not be further elaborated.

[0043] It can be understood that the anti-disconnection structure of the small-diameter concrete pipe installation interface according to an embodiment of the present invention, such as the working principles and working processes of the components such as the force-transmitting rubber gasket 3 and the polysulfide sealant layer 5, are all existing technologies and are well known to technicians in this field, and will not be described in detail here.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An anti-disconnection structure for a small-diameter concrete pipe installation interface, wherein one end of the small-diameter concrete pipe (1) is a socket end (11) and the other end is a spigot end (12), and two adjacent sections of small-diameter concrete pipes (1) are connected by inserting the spigot ends (12) into the socket ends (11), characterized in that: An arc-shaped slot (2) is provided at the lower portion where the socket end (12) and the socket end (11) meet, and a plurality of reserved slots (21) distributed radially along the arc surface are provided on the arc-shaped inner wall of the arc-shaped slot (2).

2. The anti-disconnection structure of a small-diameter concrete pipe installation interface according to claim 1, characterized in that: A force-transmitting rubber gasket (3) is fixedly provided on the end face of the socket end (11); when the socket end (12) is connected to the socket end (11), the force-transmitting rubber gasket (3) abuts against the end face of the socket end (12).

3. The anti-disconnection structure of a small-diameter concrete pipe installation interface according to claim 1 or 2, characterized in that: The socket end (12) is also embedded with a sealing water stop ring (4), and the outer surface of the socket end (12) is also provided with a polysulfide sealing adhesive layer (5). When the socket end (12) is connected to the socket end (11), the sealing water stop ring (4) abuts against the inner wall of the socket end (11), and the polysulfide sealing adhesive layer (5) fills the gap between the socket end (12) and the socket end (11).

4. The anti-disconnection structure of a small-diameter concrete pipe installation interface according to claim 3, characterized in that: The inner side of the sealing water stop ring (4) is a water-swelling rubber layer (41), and the outer side is a toothed chloroprene rubber layer (42).

5. The anti-disconnection structure of a small-diameter concrete pipe installation interface according to claim 1 or 2, characterized in that: A fixing foot nail (22) is also provided at the bottom of the arc-shaped slot (2).

6. The anti-disconnection structure of a small-diameter concrete pipe installation interface according to claim 1 or 2, characterized in that: The arc-shaped inner wall of the arc-shaped clamping slot (2) is provided with five reserved grooves (21) distributed radially along the arc surface, and the arc spacing between adjacent reserved grooves (21) is equal.

7. The anti-disconnection structure of a small-diameter concrete pipe installation interface according to claim 1 or 2, characterized in that: The reserved groove (21) is a square groove of 20mm×20mm.

8. The anti-disconnection structure of a small-diameter concrete pipe installation interface according to claim 2, characterized in that: The force transmission rubber gasket (3) is a rubber ring with a width of 5 mm.

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