Anti-drop corrugated pipe assembly

Abstract

The utility model discloses a kind of anti-falling corrugated pipe assemblies, including the same multiple corrugated pipes of front and rear axial arrangement, in every two adjacent corrugated pipes before and after, the corrugated pipe before segment of the corrugated pipe after segment of the corrugated pipe before segment of the corrugated pipe after segment is inserted into inside to realize connection, the second inner convex part of the corrugated pipe after segment falls into the first inner concave part of the corrugated pipe before segment and is fixed to form first fixed structure, the first outer convex part of the corrugated pipe before segment falls into the second outer concave part of the corrugated pipe after segment and is fixed to form second fixed structure, two fixed structures cooperate with each other, not easy to fall off.

Description

Technical Field

[0001] This utility model relates to the field of pipe materials, specifically to an anti-detachment corrugated pipe assembly. Background Technology

[0002] Corrugated pipes are widely used as underground pipelines due to their good pressure resistance, low engineering cost, and light weight. Traditionally, two corrugated pipes are placed one in front of the other, with the front section of the rear corrugated pipe inserted forward into the inner side of the rear section of the front corrugated pipe to achieve the connection. Each corrugated pipe has multiple radially convex peaks arranged axially at intervals on its outer wall. A sealing ring is sandwiched between the two adjacent peaks at the very front of the front section of the rear corrugated pipe. The two corrugated pipes are fixed together only by the friction between the inner wall of the rear section of the front corrugated pipe and the sealing ring, which is not very secure and is prone to detachment during geological settlement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a corrugated pipe assembly that prevents the corrugated pipes from falling off, so that the connection between two adjacent corrugated pipes in this assembly is not easy to fall off.

[0004] A type of anti-detachment corrugated pipe assembly includes multiple identical corrugated pipes arranged axially front to back. In each pair of adjacent corrugated pipes, the front section of the rear corrugated pipe is inserted forward into the inner side of the rear section of the front corrugated pipe to achieve connection. Each corrugated pipe has multiple radially convex peaks arranged axially at intervals on its outer wall. One of the peaks on the outer wall of the front section of the corrugated pipe is an anti-detachment peak, with a first forward-facing outward protrusion and a first backward-facing inward concave portion at its apex. The inner wall of the rear section of the corrugated pipe has a second forward-facing inward concave portion and a second backward-facing inward protrusion. The first outward protrusion and / or... Alternatively, a retaining bevel may be provided on the second inner convex part; the front section of the rear corrugated pipe is inserted forward into the inner side of the rear section of the front corrugated pipe so that the first outer convex part of its front section and the second inner convex part of the rear section of the front corrugated pipe are radially elastically offset and staggered by the retaining bevel, so that the first outer convex part and the second inner convex part can pass over each other. After passing over each other, the second inner convex part radially elastically resets and falls into the first inner concave part of the front section of the rear corrugated pipe and is locked and fixed, and the first outer convex part radially elastically resets and falls into the second outer concave part of the rear section of the front corrugated pipe and is locked and fixed.

[0005] Furthermore, among the multiple peaks, there are ordinary peaks. The radial height of the anti-detachment peak at the highest point of the first convex portion is higher than that of the ordinary peaks, and the radial height at the lowest point of the first concave portion is lower than that of the ordinary peaks.

[0006] Furthermore, among the multiple peaks, there are multiple smaller peaks. The foremost peak at the front of the bellows is a smaller peak, and its radial height is lower than that of the ordinary peaks.

[0007] Furthermore, the radial height of the anti-detachment peak at the lowest point of the first concave portion is equal to that of the small peak.

[0008] Furthermore, a sealing ring is sandwiched between two adjacent crests of the front section of the corrugated pipe, and the sealing ring is clamped between the outer wall of the rear section of the corrugated pipe and the inner wall of the front section of the corrugated pipe to form a sealing structure.

[0009] Furthermore, the sealing ring is specifically sandwiched between the two adjacent peaks at the front of the bellows.

[0010] Furthermore, the rear section of the bellows is provided with radially alternating concave and convex corrugated sections.

[0011] Furthermore, the corrugated segment is specifically positioned in front of the second outer recess.

[0012] Furthermore, the corrugated pipe is made of high-density polyethylene.

[0013] The front corrugated pipe rear section and the rear corrugated pipe front section are connected. The second inner convex part of the front corrugated pipe rear section is inserted into the first inner concave part of the rear corrugated pipe front section and locked in place to form the first fixing structure. The first outer convex part of the rear corrugated pipe front section is inserted into the second outer concave part of the front corrugated pipe rear section and locked in place to form the second fixing structure. The two fixing structures cooperate with each other and are not easy to fall off. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the bellows assembly.

[0015] Figure 2 yes Figure 1 A magnified view of a portion of the image, showing a larger area. Figure 1 Part I. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments.

[0017] like Figure 1 The bellows assembly shown includes multiple identical bellows arranged axially front to back. The outer diameter of the front section 1 of the bellows is smaller than the inner diameter of the rear section 2 of the bellows. In each pair of adjacent bellows, the rearmost front section 1 is inserted forward into the inner side of the frontmost rear section 2 of the bellows to achieve connection.

[0018] The outer wall of the corrugated pipe has multiple radially convex peaks arranged at axial intervals, including three types: ordinary peaks 3, small peaks 33, and anti-detachment peaks 30. Specifically, the three foremost peaks in the front section 1 are small peaks 33, with a radial height lower than the ordinary peaks 3. There is one anti-detachment peak 30, located between the small peaks 33 and the ordinary peaks 3. Its peak has a forward-aligned first outward convex portion 31 and a rearward-aligned first inward concave portion 32. The radial height of the anti-detachment peak 30 at the highest point of the first outward convex portion 31 is higher than that of the ordinary peaks 3, while its radial height at the lowest point of the first inward concave portion 32 is lower than that of the ordinary peaks 3, equal to that of the small peaks 33. The inner wall of the rear section 2 of the corrugated pipe has a forward-aligned second outward concave portion 21 and a rearward-aligned second inward convex portion 22. The corrugated pipe is made of high-density polyethylene (HDPE-BS), such as... Figure 2 As shown, both the front side of the first outward protrusion 31 and the rear side of the second inward protrusion 22 are provided with a retaining slope 5. The connection operation of two adjacent corrugated pipes is as follows: the front section 1 of the rear corrugated pipe is inserted forward into the inner side of the rear section 2 of the front corrugated pipe, and its small peak 33 passes over the second inward protrusion 22 of the inner wall of the rear section 2 of the front corrugated pipe; the rear corrugated pipe continues to be inserted forward, and the first outward protrusion 31 of its front section 1 and the second inward protrusion 22 of the rear section 2 of the front corrugated pipe are radially elastically offset and staggered by the retaining slope 5, so that the first outward protrusion 31 and the second inward protrusion 22 can pass over each other. After passing over each other, the second inward protrusion 22 radially elastically resets and falls into the first inward concave part 32 of the rear corrugated pipe front section 1 and is locked and fixed to form the first fixing structure. The first outward protrusion 31 radially elastically resets and falls into the second outward concave part 21 of the rear corrugated pipe rear section 2 and is locked and fixed to form the second fixing structure. The two fixing structures cooperate with each other and are not easy to fall off.

[0019] A sealing ring 4 is sandwiched between the two adjacent small peaks 33 at the front of the bellows section 1. The sealing ring 4 is clamped between the outer wall of the rear bellows section 1 and the inner wall of the front bellows section 2, forming a sealing structure.

[0020] The rear section 2 of the corrugated pipe is provided with a radially alternating corrugated section 23 in front of the second outer concave part 21. It can undergo tensile or compressive deformation when geological settlement occurs to absorb external stress and prevent stress from being transmitted to the two fixed structures mentioned above, which would cause them to fall off.

Claims

1. A corrugated pipe assembly for preventing detachment, comprising multiple identical corrugated pipes arranged axially front to back, wherein in every two adjacent corrugated pipes, the front section of the rear corrugated pipe is inserted forward into the inner side of the rear section of the front corrugated pipe to achieve connection, and the outer wall of each corrugated pipe has multiple radially convex peaks arranged axially at intervals, characterized in that: One of the crests on the outer wall of the front section of the corrugated pipe is an anti-detachment crest, with a first outward protrusion and a first inward concave portion at the top of the crest. The inner wall of the rear section of the corrugated pipe has a second outward concave portion and a second inward protrusion at the top. The first outward protrusion and / or the second inward protrusion is provided with a buckling bevel. The rear section of the corrugated pipe is inserted forward into the inner side of the front section of the rear section of the corrugated pipe, so that the first outward protrusion of the front section and the second inward protrusion of the front section of the rear section of the corrugated pipe are radially elastically offset and staggered by the buckling bevel, so that the first outward protrusion and the second inward protrusion can pass over each other. After passing over each other, the second inward protrusion radially elastically resets and falls into the first inward concave portion of the rear section of the corrugated pipe and is locked and fixed. The first outward protrusion radially elastically resets and falls into the second outward concave portion of the front section of the corrugated pipe and is locked and fixed.

2. The bellows assembly according to claim 1, characterized in that: Among the multiple peaks, there are ordinary peaks. The radial height of the anti-detachment peak at the highest point of the first convex part is higher than that of the ordinary peaks, and the radial height at the lowest point of the first concave part is lower than that of the ordinary peaks.

3. The bellows assembly according to claim 2, characterized in that: Among the multiple peaks, there are multiple smaller peaks. The foremost peak at the front of the bellows is a smaller peak, and its radial height is lower than that of the ordinary peaks.

4. The bellows assembly according to claim 3, characterized in that: The radial height of the anti-detachment peak at the lowest point of the first concave portion is equal to that of the small peak.

5. The bellows assembly according to claim 1, characterized in that: A sealing ring is sandwiched between two adjacent crests of the front section of the corrugated pipe. The sealing ring is clamped between the outer wall of the rear section of the corrugated pipe and the inner wall of the front section of the corrugated pipe to form a sealing structure.

6. The bellows assembly according to claim 5, characterized in that: The sealing ring is specifically sandwiched between the two adjacent crests at the front of the bellows.

7. The bellows assembly according to claim 1, characterized in that: The rear section of the bellows has a radially alternating concave and convex corrugated section.

8. The bellows assembly according to claim 7, characterized in that: The corrugated section is specifically located in front of the second outer recess.

9. The bellows assembly according to claim 1, characterized in that: The corrugated pipe is made of high-density polyethylene.

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