Reinforced structure wall composite pipe

Abstract

The utility model relates to the technical field of corrugated pipes, in particular to a reinforced structure wall composite pipe. The utility model discloses a reinforced structure wall composite pipe, which comprises a pipe main body and corrugated parts connected on the peripheral surface of the pipe main body, a reinforcing rib is connected between two adjacent corrugated parts, the height of the reinforcing rib in the radial direction is lower than the wave crest height of the corrugated parts, and arc top ribs are arranged at the joints of the reinforcing ribs and the corrugated parts. The reinforcing ribs are connected between every two adjacent corrugated parts, the axial strength and the impact strength of the pipe can be improved, meanwhile, the height of the reinforcing ribs in the radial direction is smaller than the height of the wave crests of the corrugated parts, the arc top ribs are further arranged at the joints of the reinforcing ribs and the corrugated parts, the structural strength of the wave crests of the corrugated parts can be further improved, and the service life of the pipe is prolonged. The problem of reverse bending deformation of the wave crests of the corrugated parts at the alternating positions of the reinforcing ribs is avoided, and the radial rigidity of the pipe can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, and more specifically, to a composite pipe with a reinforced structural wall. Background Art

[0002] Double-wall corrugated pipes are widely used in various drainage pipe systems due to their light weight, long service life, and convenient construction. Double-wall corrugated pipes use a special structural combination of the inner wall of the cylindrical layer and the outer wall of the corrugated pipe layer, so that the axial cross-sectional structure of the pipe is in the form of thin-thick-thin, where the thin part is the inner wall and the thick part is the pressure point between the inner wall and the outer wall. This structural form provides axial flexibility for the pipe, but also has hidden dangers in use. When the pipe is transported by forklifts, there is inevitable swinging of the pipe during loading and unloading, and the whole pipe is dragged during construction. Under the condition of large axial stress, the thin-thick-thin structural form of the pipe axial cross-section is unevenly stressed, and the thin-thick transition position becomes a defective position that is easy to bend and break.

[0003] Relevant research has been conducted in the prior art. For example, Chinese patent CN203757196U discloses a polyethylene double-wall corrugated pipe with multiple reinforcing ribs and inner ribs, which is provided with reinforcing ribs penetrating the corrugated pipe layer to improve the impact resistance of the double-wall corrugated pipe. Although the above structure improves the performance of the double-wall corrugated pipe to a certain extent, the reinforcing ribs penetrate and destroy the original corrugated pipe layer structure, resulting in the problem that the crests of the corrugated pipe layer are in the alternating position with the reinforcing ribs and are prone to reverse bending deformation, that is, the crests of the corrugated pipe layer are concave inward, which will affect the radial stiffness of the double-wall corrugated pipe. Utility Model Content

[0004] The utility model provides a composite pipe with a reinforced structural wall to overcome the problem in the prior art that the wave crests of the corrugated pipe layer are easily deformed when they are at the alternating positions with the reinforcing ribs.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a reinforced structural wall composite pipe, including a pipe body and a corrugated portion connected to the outer circumferential surface of the pipe body, a reinforcing rib is connected between two adjacent corrugated portions, the height of the reinforcing rib in the radial direction is lower than the crest height of the corrugated portion, and an arc top rib is also provided at the connection between the reinforcing rib and the corrugated portion.

[0006] In the technical solution of the present application, reinforcing ribs are connected between two adjacent corrugated parts, which can improve the axial strength and impact strength of the pipe. At the same time, the height of the reinforcing ribs in the radial direction is lower than the height of the crests of the corrugated parts, and arc top ribs are also provided at the connection between the reinforcing ribs and the corrugated parts, which can further improve the structural strength of the crests of the corrugated parts, avoid the problem of reverse bending deformation of the crests of the corrugated parts at the alternating positions with the reinforcing ribs, and effectively improve the radial stiffness of the pipe.

[0007] In some preferred embodiments, along the axial cross section of the composite pipe, the cross-sectional contour line of the arc top rib matches the cross-sectional contour line of the corresponding side of the corrugated portion, and the end of the arc top rib away from the reinforcing rib extends horizontally to the top of the wave crest.

[0008] Through the above structure, the utility model uses arc top ribs with contour lines matching the corrugated part to strengthen both sides of the wave crest, and the top of the arc top rib is flush with the top of the wave crest, so as to avoid the arc top rib exceeding the height of the original wave crest in the radial direction and causing the arc top rib structure to be damaged during the use and dragging process.

[0009] In some preferred embodiments, the arc top rib has a first surface connected to the reinforcing rib and a second surface connected to one side of the corrugated portion, and the end of the second surface away from the reinforcing rib is lower than or equal to the height of the crest of the corrugated portion. Therefore, it is possible to ensure that the arc top rib is effectively connected to the reinforcing rib and the corrugated portion.

[0010] In some preferred embodiments, the arc top ribs on both sides of the corrugated portion are symmetrically arranged relative to the center line of the corresponding corrugated portion.

[0011] The utility model forms arc top ribs symmetrical on both sides through the structure, so that the bearing capacity of both sides of the wave crest to external forces is balanced, thereby improving the overall stability.

[0012] In some preferred embodiments, the shape of the reinforcing rib along the radial cross section is an isosceles triangle, and the waistline of the isosceles triangle is symmetrically arranged along the radial direction of the tube body.

[0013] The utility model adopts an isosceles triangle structure through the above structure. Compared with the reinforcing ribs with semicircular cross-sections in the prior art, the isosceles triangle has better stability and it is easy to avoid the situation of horizontal reinforcing ribs getting stuck in the demoulding process by adjusting the inclination angle of the waistline of the isosceles triangle.

[0014] In some preferred embodiments, the top of the isosceles triangle of the reinforcing rib is provided with a rounded corner. With the above structure, the stress concentration on the top is avoided by the rounded corner design of the top of the isosceles triangle, thereby improving the stability of the reinforcing rib structure.

[0015] In some preferred embodiments, a plurality of reinforcing ribs are evenly distributed around the circumference of the pipe body.

[0016] In some preferred embodiments, the reinforcing ribs are arranged along the axial direction of the composite pipe.

[0017] In some preferred embodiments, the reinforcing ribs located at the same position on each circumference of the composite pipe are located on the same axis.

[0018] In some preferred embodiments, the reinforced structural wall composite pipe has a main body section, with a spigot section and / or a socket section respectively provided at both ends of the main body section, and the reinforcing ribs and arc top ribs are arranged on the main body section.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The reinforced structural wall composite pipe of the utility model has a reinforcing rib connected between two adjacent corrugated parts, which can improve the axial strength and impact resistance of the pipe. The utility model is further improved on the basis of the above structure, so that the height of the reinforcing rib in the radial direction is lower than the height of the crest of the corrugated part, and an arc top rib is also provided at the connection between the reinforcing rib and the corrugated part, which can further improve the crest structural strength of the corrugated part, avoid the problem of reverse bending deformation of the crest of the corrugated part at the alternating position with the reinforcing rib, and ensure the axial strength of the pipe while also improving the radial stiffness of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the reinforced structural wall composite pipe of the utility model;

[0022] Figure 2 It is a cross-sectional view of the reinforced structural wall composite pipe of the utility model along the axial direction;

[0023] Figure 3 yes Figure 2 A magnified view of part D;

[0024] Figure 4 yes Figure 2 The CC section view;

[0025] Figure 5 yes Figure 4 Enlarged view of part E.

[0026] In the attached drawings: 1, pipe body; 2, corrugated part; 201, wave crest; 3, reinforcing ribs; 301, chamfered corners; 302, waistline; 4, arc top ribs; 100, main body section; 200, plug section; 300, socket section. DETAILED DESCRIPTION

[0027] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0030] Example 1

[0031] refer to Figures 1 to 4 The present embodiment discloses a reinforced structural wall composite pipe, comprising a pipe body 1 and a corrugated portion 2 connected to the outer circumferential surface of the pipe body 1, a reinforcing rib 3 is connected between two adjacent corrugated portions 2, the height of the reinforcing rib 3 in the radial direction is lower than the height of the crest 201 of the corrugated portion 2, and an arc top rib 4 is also provided at the connection between the reinforcing rib 3 and the corrugated portion 2.

[0032] In this embodiment, the axial strength and impact strength of the pipe can be improved by connecting the reinforcing ribs 3 between two adjacent corrugated parts 2. At the same time, the height of the reinforcing ribs 3 in the radial direction is lower than the height of the crest 201 of the corrugated part 2, and the arc top ribs 4 are provided at the connection between the reinforcing ribs and the corrugated part 2, which can further improve the structural strength of the crest 201 of the outer wall 2 of the corrugated pipe, avoid the problem of reverse bending deformation of the crest 201 at the alternating position with the reinforcing ribs 3, and effectively improve the radial stiffness of the pipe.

[0033] In this embodiment, a plurality of reinforcing ribs 3 are provided between any two adjacent corrugated portions 2, and each reinforcing rib 3 is evenly arranged in the circumference of the pipe body 1. The reinforcing ribs 3 are arranged along the axial direction of the composite pipe, and the reinforcing ribs 3 located at the same position on each circumference of the composite pipe are on the same axis. In other words, the number of reinforcing ribs 3 on each circumference may be the same and the arrangement intervals may be the same, and the reinforcing ribs 3 at corresponding positions on each circumference may be on the same axial straight line, forming a plurality of reinforcing ribs on the same axis arranged at equal circumferential angles in the circumferential direction. This can improve the consistency of the overall structure and make it easier to open the mold of the composite pipe during production. Of course, in some other embodiments, the reinforcing ribs 3 may not be evenly distributed, and the extension direction of the reinforcing ribs 3 between two adjacent corrugated portions 2 may also have a certain angle with the axis. In this embodiment, the cross-sectional shape of the reinforcing ribs 3 may be semicircular, triangular, etc.

[0034] refer to Figure 1 In this embodiment, the reinforced structural wall composite pipe has a main body section 100, a spigot section 200 is provided at one end of the main body section 100, and a bell section 300 is provided at the other end, wherein the reinforcing ribs 3 and the arc top ribs 4 are only provided on the main body section 100, and the spigot section 200 and the bell section 300 are pipe sections for connecting with the outside. In some embodiments, a flaring piece can be connected at the spigot section 200 to form a bell section 300, and the flaring piece and the spigot section 200 are sealed by a spigot-type sealing ring, which is installed at the trough position between the corrugated portion 2 of the spigot section 200. This installation method can prevent the sealing ring from being offset or flanging during the installation process. Therefore, the reinforcing ribs 3 and the arc top ribs 4 are not provided at the position of the spigot section 200 to facilitate the installation of the sealing ring. In some embodiments, both ends of the composite pipe are spigot sections 200; in other embodiments, both ends of the composite pipe can also be bell sections 300, which can be designed according to actual use needs.

[0035] refer to Figure 3 In this embodiment, along the axial section of the composite tube, the cross-sectional contour line of the arc top rib 4 matches the cross-sectional contour line of the corresponding side of the corrugated portion 2, and the end of the arc top rib 4 away from the reinforcing rib 3 extends horizontally to the top of the wave crest 201. In other words, from the axial section, the outer contour direction of the tube wall of the arc top rib 4 is the same as the outer contour direction of the tube wall of the corrugated portion 2 on the same side, that is, the two have matching edge contour structure lines, so that the arc top rib 4 fits the corrugated portion 2. More specifically, the arc top rib 4 has a first surface connected to the reinforcing rib 3, and a second surface connected to one side of the corrugated portion 2, and the end of the second surface away from the reinforcing rib 3 is lower than or equal to the height of the top of the wave crest 201 of the corrugated portion 2. In this embodiment, the top of the arc top rib 4 is flush with the top of the wave crest 201, so as to avoid the arc top rib 4 exceeding the height of the original wave crest 201 in the radial direction and causing the arc top rib 4 to be damaged during the dragging process.

[0036] refer to Figure 3 The arc top ribs 4 on both sides of the corrugated portion 2 are symmetrically arranged relative to the center line of the corresponding corrugated portion 2. In this way, by forming symmetrical arc top ribs 4 on both sides of the wave crest 201, the bearing capacity of both sides of the wave crest 201 for external forces is balanced, thereby improving stability. In this embodiment, the surface of the arc top rib 4 can be designed as a smooth transition surface for easy manufacturing.

[0037] Example 2

[0038] refer to Figures 1 to 4 as well as Figure 5 The present embodiment discloses a reinforced structural wall composite pipe, comprising a pipe body 1 and a corrugated portion 2 connected to the outer circumferential surface of the pipe body 1, a reinforcing rib 3 is connected between two adjacent corrugated portions 2, the height of the reinforcing rib 3 in the radial direction is lower than the height of the crest 201 of the corrugated portion 2, and an arc top rib 4 is also provided at the connection between the reinforcing rib 3 and the corrugated portion 2.

[0039] This embodiment is similar to the embodiment 1, except that in this embodiment, the shape of the reinforcing rib 3 along the radial section is an isosceles triangle, and the isosceles triangle has waistlines 302 on both sides, and the waistlines are symmetrically arranged along the radial direction of the tube body 1. The waistlines 302 of the isosceles triangle on both sides of the wave crest 201 are equal in length, forming a symmetrical shape with the vertex of the wave crest 201 as the axis. In this embodiment, an isosceles triangle structure is adopted. Compared with the reinforcing rib 3 with a semicircular cross-section in the prior art, the stability of the triangle is better, and it is easy to avoid the situation of the transverse reinforcing rib being stuck in the manufacturing demoulding process by adjusting the inclination angle of the waistline 302 on both sides of the isosceles triangle.

[0040] The following is a further explanation for the convenience of demoulding. Figure 4 The direction of display is used as a reference. At present, the double-wall corrugated pipe production line can be divided into two types according to the module opening and closing method: vertical and horizontal, that is, the module opens and closes up and down and the module opens and closes horizontally. Regardless of whether the mold is opened vertically or horizontally, its motion trajectory is a straight line. If the appearance structure of the pipe forms a positive angle with the opening and closing direction of the mold, then when the mold is opened, the mold jamming phenomenon often occurs, making the product difficult to demold. The reinforcement ribs 3 used in the double-wall corrugated pipe in the prior art are semicircular. When two or four reinforcement ribs 3 are designed, the reinforcement ribs 3 can be set in a direction parallel to or perpendicular to the mold opening direction to facilitate demolding. More specifically, for example, when four reinforcement ribs 3 are designed, the four reinforcement ribs 3 can be set in the opposite positions of the upper, lower, left and right of the cross section, so that no matter whether the mold is opened and closed up and down or horizontally, there will be no mold jamming phenomenon. However, if the number of transverse reinforcement ribs is further increased, for example, eight uniformly distributed transverse reinforcement ribs are used, so that the reinforcement ribs 3 are added to the upper left, lower left, upper right and lower right directions. When using semicircular reinforcing ribs 3, the outer surfaces of the reinforcing ribs 3 in the four directions will form a positive angle with the mold opening and closing direction, which may easily cause the mold to get stuck when the mold is opened, making it difficult to demold the product. Therefore, in this embodiment, the cross section of the reinforcing ribs 3 is designed to be an isosceles triangle. When the number of reinforcing ribs 3 is different, the inclination angles of the two sides of the designed triangle can be adjusted to easily avoid the occurrence of mold sticking, and the product has better processability. For further reference Figure 4 For example, in the case of eight reinforcing ribs 3, the cross section of the reinforcing rib 3 can be designed to be an isosceles right triangle, so that the sides of the reinforcing rib 3 at the four corners are all horizontal or vertical, and there will be no mold jamming whether it is opened and closed up and down or horizontally. Of course, in some other embodiments, it can also be designed as an isosceles obtuse triangle, which can also avoid the mold jamming phenomenon. It can be understood that increasing the number of reinforcing ribs 3 can further improve the structural strength of the pipe fitting.

[0041] refer to Figure 4 and Figure 5In this embodiment, a rounded corner 301 is provided at the top of the isosceles triangle of the reinforcing rib 3. The top rounded corner 301 is designed to avoid stress concentration at the top, thereby improving the stability of the structure of the reinforcing rib 3. Preferably, the width of the arc top rib 4 is the same as the width of the rounded corner 301. When subjected to external force, the connection position between the reinforcing rib 3 and the wave crest 201 becomes a weak point under stress, and the position of the stress bending deformation of the wave crest 201 is concentrated at the position corresponding to the midpoint of the rounded corner 301 at the top of the reinforcing rib. Therefore, the width of the arc top rib 4 is designed to be the width of the rounded corner 301, that is, the width between the tangent point of the top rounded corner 301 of the reinforcing rib 3 and the two waistlines 302, to ensure the force support strength at the midpoint of the rounded corner 301 when the wave crest 201 is under stress.

[0042] Example 3

[0043] refer to Figures 1 to 4 The present embodiment discloses a reinforced structural wall composite pipe, comprising a pipe body 1 and a corrugated portion 2 connected to the outer circumferential surface of the pipe body 1, a reinforcing rib 3 is connected between two adjacent corrugated portions 2, the height of the reinforcing rib 3 in the radial direction is lower than the height of the crest 201 of the corrugated portion 2, and an arc top rib 4 is also provided at the connection between the reinforcing rib 3 and the corrugated portion 2.

[0044] This embodiment is similar to the embodiment 1, except that the surface of the arc top rib 4 is a wavy surface or a toothed surface (not shown in the figure). The surface structure of the arc top rib 4 with a wavy surface or a toothed surface can further provide support strength and improve rigidity, which is beneficial to improving the deformation resistance of the arc top rib 4 and improving the performance of the pipe.

[0045] In summary, the reinforced structural wall composite pipe of the utility model can improve the axial strength and impact resistance of the pipe by providing a reinforcing rib that passes through the outer wall of the corrugated pipe in the axial direction. At the same time, the height of the reinforcing rib in the radial direction is lower than the height of the wave crest of the outer wall of the corrugated pipe, and an arc top rib is provided at the connection between the reinforcing rib and the outer wall of the corrugated pipe, which can further improve the wave crest structural strength of the outer wall of the corrugated pipe, avoid the problem of reverse bending deformation of the wave crest at the alternating position with the reinforcing rib, and effectively improve the radial stiffness of the pipe.

[0046] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A reinforced structural wall composite pipe, comprising a pipe body (1) and a corrugated portion (2) connected to the outer peripheral surface of the pipe body (1), characterized in that: A reinforcing rib (3) is connected between two adjacent corrugated portions (2); the height of the reinforcing rib (3) in the radial direction is lower than the height of the wave crest (201) of the corrugated portion (2); and an arc top rib (4) is also provided at the connection between the reinforcing rib (3) and the corrugated portion (2).

2. The reinforced structural wall composite pipe according to claim 1, characterized in that: Along the axial cross section of the composite pipe, the cross-sectional contour line of the arc top rib (4) matches the cross-sectional contour line of the corresponding side of the corrugated portion (2), and the end of the arc top rib (4) away from the reinforcing rib (3) extends horizontally to the top of the wave crest (201).

3. The reinforced structural wall composite pipe according to claim 2, characterized in that: The arc top rib (4) comprises a first surface connected to the reinforcing rib (3), and a second surface connected to one side of the corrugated portion, wherein the end of the second surface away from the reinforcing rib (3) is lower than or equal to the height of the crest of the corrugated portion.

4. The reinforced structural wall composite pipe according to claim 1, characterized in that: The arc top ribs (4) on both sides of the corrugated portion (2) are symmetrically arranged relative to the center line of the corresponding corrugated portion (2).

5. The reinforced structural wall composite pipe according to claim 1, characterized in that: The shape of the reinforcing rib (3) along the radial cross section is an isosceles triangle, and the waistline of the isosceles triangle is symmetrically arranged along the radial direction of the tube body (1).

6. The reinforced structural wall composite pipe according to claim 5, characterized in that: The two waistline vertices of the isosceles triangle of the reinforcing rib (3) are provided with rounded corners (301).

7. The reinforced structural wall composite pipe according to claim 1, characterized in that: A plurality of reinforcing ribs (3) are evenly arranged in the circumferential direction of the pipe body (1).

8. The reinforced structural wall composite pipe according to claim 7, characterized in that: The reinforcing ribs (3) are arranged along the axial direction of the composite pipe.

9. The reinforced structural wall composite pipe according to claim 8, characterized in that: The reinforcing ribs (3) located at the same position on each circumference of the composite pipe are located on the same axis.

10. The reinforced structural wall composite pipe according to any one of claims 1 to 9, characterized in that: The reinforced structural wall composite pipe comprises a main body section (100), a spigot section (200) and / or a socket section (300) are respectively arranged at both ends of the main body section (100), and the reinforcing ribs (3) and the arc top ribs (4) are arranged on the main body section (100).

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