Hollow tube with high strength and low gram weight

Abstract

The utility model discloses a hollow pipe with high strength and low gram weight, which comprises a pipe material, the pipe material comprises an adhesion layer and a pipe belt layer, the pipe belt layer is provided with an annular belt wound on the periphery of the pipe material, a first reinforcing rib is arranged along the direction of the annular belt, and the adhesion layer comprises second reinforcing ribs which are meshed with each other; by arranging the convex ribs and the grooves, the convex ribs and the grooves are meshed with each other, so that the contact surface area of the wall surfaces is increased, the connection strength between the wall surfaces is enhanced, and the stability and the reliability of the pipe under the complex stress condition are also improved; the first reinforcing ribs are arranged on the circumferential ring belt of the pipe belt layer, the rigidity and the impact resistance of the ring belt can be improved, and compared with the mode that the wall thickness is increased through a pure solid wall, the gram weight of a product is relatively light, and the requirement for the ring rigidity can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage pipes, and particularly relates to a hollow pipe with high strength and low gram weight. Background Art

[0002] Winding pipes are widely used in the municipal field, especially in the drainage field; according to different application scenarios, the ring stiffness and buried depth of the products are also different. However, the improvement of the ring stiffness is determined by the material properties of the products on the one hand, by the structural design of the products on the other hand, and by the wall thickness of the products; generally, the higher the ring stiffness, the greater the root weight and the thicker the wall thickness. The production process of winding A pipes is to first extrude square pipes, and then form finished pipes by bonding the square pipes with the wall surfaces of the square pipes at a certain inner diameter or outer diameter size; during the winding process, the original straight pipes will be bent into circular pipes, resulting in a deflection in itself. This stress will not disappear with the forming of the pipes and will remain inside the pipes all the time, causing the bonding points to crack when the pipes are subjected to ring stiffness and drop hammer impact; when the pipes are lifted by a crane during construction at the construction site, there will also be a problem of pipe breakage at the bonding place.

[0003] Traditional winding A pipes often use the method of increasing the wall thickness with pure solid walls. This structure usually makes the gram weight of the products relatively large, the bonding degree at the bonding place is relatively poor, and it is easy to cause deviation or detachment when subjected to longitudinal or transverse forces.

[0004] A "hollow-wall pipe with reinforcing ribs" disclosed in a Chinese patent document, with the publication number CN206846109U, includes a pipe body. An outer hollow pipe is wound along the axis of the pipe body, and reinforcing ribs are arranged inside the hollow pipe. The hollow pipes are fixedly attached to each other and do not have stability; in addition, the reinforcing rib structure is thin and the impact resistance performance is relatively poor, and it does not have stability. Summary of the Invention

[0005] The utility model mainly solves the problems of instability between the wall surfaces, easy cracking of the outer wall and easy detachment of the bonding layer, and proposes a hollow pipe with high strength and low gram weight. The reinforcing ribs are mutually engaged, the wall surfaces are not easy to crack, the stress can be effectively dispersed, the impact resistance can be resisted to avoid damage, the material consumption can be reduced, the gram weight is lighter, and it is convenient for production and manufacturing.

[0006] To achieve the above object, the following technical solutions are proposed:

[0007] A hollow pipe with high strength and low gram weight, including a pipe material. The pipe material includes a bonding layer and a pipe belt layer. The pipe belt layer is provided with a ring belt wound around the outer periphery of the pipe material, and a first reinforcing rib is arranged along the direction of the ring belt. The bonding layer includes mutually engaged second reinforcing ribs.

[0008] A second reinforcing rib structure is provided at the wall surface and the winding joint of the pipe adhesive layer. By setting convex ribs and grooves, they are engaged with each other, increasing the contact surface area of the wall surface. This not only enhances the connection strength between the wall surfaces but also improves the stability and reliability of the pipe under complex stress conditions. A first reinforcing rib is provided on the annular belt on the outer periphery of the pipe belt layer, which can increase the rigidity and impact resistance of the annular belt. Compared with the method of increasing the wall thickness of a pure solid wall, the gram weight of the product is relatively lighter, and the ring stiffness requirement can be met.

[0009] Preferably, one side of the adhesive layer is connected to the first reinforcing rib, and the other side is connected to the inner wall. Through the mutual engagement of the convex ribs and grooves of the second reinforcing rib, a stable structure of gear meshing is formed. When subjected to external forces, this engagement structure can effectively disperse stress, prevent damage caused by local stress concentration, and maintain the overall structural stability of the pipe wall.

[0010] Preferably, the first reinforcing rib and the second reinforcing rib are provided with convex ribs, and grooves are provided at adjacent positions on both sides of the convex ribs. The convex ribs and the grooves are arranged alternately, increasing the contact area of the wall surface. This not only improves the connection strength between the wall surfaces but also improves the stability and reliability of the pipe under complex stress conditions.

[0011] Preferably, the length ratio of the convex rib to the groove is 1:1. In the adhesive layer, the convex rib can form a firm engagement state with the groove in the length direction, ensuring the engagement strength and avoiding unnecessary material waste.

[0012] Preferably, the width ratio of the convex rib to the groove is 1:1. In the adhesive layer, the convex rib can form a firm engagement state with the groove in the width direction, ensuring the engagement strength and avoiding unnecessary material waste.

[0013] Preferably, the number of the convex ribs and the grooves provided on the first reinforcing rib is 4 - 8 groups, which can ensure the impact resistance without additionally increasing the gram weight of the pipe. In addition, the number of the grooves and the convex ribs can be adjusted according to actual production factors.

[0014] Preferably, the number of the convex ribs and the grooves provided on the second reinforcing rib is 5 - 10 groups, which can ensure the accuracy of the engagement between the convex rib and the groove while enhancing the engagement strength. In addition, the number of the convex ribs and the grooves can be adjusted according to actual production factors.

[0015] Preferably, the rib and the groove are arranged as a rectangle capable of mutual engagement, so that the groove and the rib are tightly engaged. The rib and the groove can also be arranged as a trapezoid, a rhombus, a triangle and an irregular shape. The groove is arranged at the corresponding structure of the rib, which can increase the contact area at the wall joint and enhance the reliability of the connection. In addition, a limiting structure can be added to further enhance its stability.

[0016] Preferably, the thickness of the adhesion layer is 3-5 times the width of the rib, which increases the bonding strength and prevents the detachment at the wall joint of the adhesion layer due to stress problems.

[0017] The utility model is a high-strength and low-gram-weight hollow pipe, and its beneficial effects are as follows:

[0018] A second reinforcing rib structure is arranged at the wall surface and the winding joint of the pipe adhesion layer, which increases the contact area between the wall surfaces and can effectively improve the stability and reliability.

[0019] A first reinforcing rib is arranged on the annular belt on the outer periphery of the pipe belt layer, which can increase the impact resistance of the product.

[0020] Compared with the way of increasing the wall thickness of a pure solid wall, the gram weight of the product is relatively lighter and can meet the ring stiffness requirement. Description of the Drawings

[0021] Figure 1 It is a structural diagram of a high-strength and low-gram-weight hollow pipe of the utility model.

[0022] Figure 2 It is a cross-sectional view of a high-strength and low-gram-weight hollow pipe of the utility model.

[0023] Figure 3 It is a reinforcing rib structure diagram of a high-strength and low-gram-weight hollow pipe of the utility model.

[0024] Figure 4 It is a reinforcing rib structure diagram of Embodiment 2 of a high-strength and low-gram-weight hollow pipe of the utility model.

[0025] Figure 5 It is a reinforcing rib structure diagram of Embodiment 3 of a high-strength and low-gram-weight hollow pipe of the utility model.

[0026] Figure 6 It is a reinforcing rib structure diagram of Embodiment 4 of a high-strength and low-gram-weight hollow pipe of the utility model.

[0027] Reference numerals in the drawings: pipe 1; adhesion layer 2; pipe belt layer 3; annular belt 4; first reinforcing rib 5; second reinforcing rib 6; inner wall 7; rib 8; groove 9; auxiliary support 10; reinforcing pillar 11. Detailed Description of the Invention

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] The specific embodiment 1 of the present utility model is as follows.

[0030] The present utility model discloses a hollow tube with high strength and low gram weight, as Figures 1 to 3 shown, which includes a pipe material 1. The pipe material 1 includes a groove 9, an adhesion layer 2 and a pipe belt layer 3. The pipe belt layer 3 is provided with an annular belt 4 wound around the outer periphery of the pipe material 1, and a first reinforcing rib is arranged along the direction of the annular belt 4. The adhesion layer 2 includes mutually engaged second reinforcing ribs 6; one side of the adhesion layer 2 is connected to the first reinforcing rib 5, and the other side is connected to the inner wall 7; the first reinforcing rib 5 and the second reinforcing rib 6 are provided with convex ribs 8, and grooves are arranged at adjacent positions on both sides of the convex ribs 8. The convex ribs 8 and the grooves 9 are arranged alternately; the length-to-width ratios of the convex ribs 8 and the grooves 9 are both 1:1; the number of the convex ribs 8 and the grooves 9 arranged on the first reinforcing rib 5 is 4 to 8 groups, and the number of the convex ribs 8 and the grooves 9 arranged on the second reinforcing rib 6 is 5 to 10 groups; the convex ribs 8 and the grooves 9 are arranged as rectangles capable of mutually engaging; the thickness of the adhesion layer 2 is 3 to 5 times the width of the convex ribs 8. A second reinforcing rib 6 structure is arranged at the wall surface and the winding and fitting position of the wall surface of the adhesion layer 2 of the pipe material 1. By arranging the convex ribs 8 and the grooves 9 to engage with each other, the contact surface area between the wall surfaces is increased, which not only enhances the connection strength between the wall surfaces, but also improves the stability and reliability of the pipe material 1 under complex stress conditions; a first reinforcing rib 5 is arranged on the annular belt 4 on the outer periphery of the pipe belt layer 3, which can increase the rigidity and impact resistance of the annular belt 4. Compared with the method of increasing the wall thickness of a pure solid wall, the gram weight of the product is relatively lighter, and the ring stiffness requirement can be met.

[0031] The pipe material 1 includes an adhesion layer 2 and a pipe band layer 3. The adhesion layer 2 includes walls that bite into each other pairwise. When the pipe material 1 is produced, first, a square pipe is extruded, and then the square pipe is wound into a finished pipe material 1 with a certain inner diameter or outer diameter size, making the walls of the square pipe fit and wind around each other. During the winding process, the original straight pipe will be wound into a circular pipe. At this time, the pipe body itself will have deflection, and this stress will not disappear with the forming of the pipe material 1. Furthermore, the pipe material 1 will have problems such as fracture at the bonding place. Therefore, the adhesion layer 2 is provided with ribs 8 and grooves 9, which not only increase the contact area between the walls, but also increase the contact area and biting depth through physical biting, disperse the stress, effectively resist external forces such as tension and torsion that the pipe material 1 may encounter during use, enhance the bonding strength between the walls, and solve the problem of fracture at the bonding place caused by the non-tight fit of the walls and stress concentration during the winding forming process of traditional pipe materials 1. In addition, the pipe band layer 3 is also provided with ribs 8 to increase the impact resistance of the product. At the same time, by arranging the ribs 8 and grooves 9 at intervals, compared with the method of increasing the wall thickness with a pure solid wall, the weight per unit area of the product is relatively lighter, and the ring stiffness requirement can be met.

[0032] The pipe band layer 3 is provided with an annular band 4 that winds around the outer periphery of the pipe material 1. The annular band 4 is the outer annular pipe wall of a circular pipe formed by winding a preferentially extruded square pipe. When the pipe material 1 is in operation, it is required that the outer annular band 4 has good impact resistance to avoid the outer wall of the pipe material 1 from cracking or being damaged. Therefore, the present utility model is provided with a first reinforcing rib 5 on the annular band 4 to optimize the impact resistance of the pipe material 1. At the same time, compared with the method of increasing the wall thickness of the pipe material 1 with a pure solid wall, the present utility model is provided with a structure in which ribs 8 and grooves 9 are arranged alternately. Utilizing the mechanical properties of the material, while maintaining or improving the ring stiffness, the overall weight of the pipe material 1 is effectively reduced, the material cost is lowered, and the labor intensity during construction operations is reduced.

[0033] The first reinforcing rib 5 is set as a rectangular structure with a length ratio and a width ratio of the rib 8 to the groove 9 both being 1:1. The ribs 8 and the grooves 9 are arranged at intervals and are set in 4 to 8 groups on the annular band 4, which can ensure the impact resistance without additionally increasing the weight per unit area of the pipe material 1. In addition, the setting quantity of the grooves 9 and the ribs 8 can be adjusted according to actual production factors.

[0034] The second reinforcing rib 6 is set as a rectangular structure with a length ratio and a width ratio of the rib 8 to the groove 9 both being 1:1, ensuring that in the adhesion layer 2, the rib 8 can form a firm biting state with the groove 9 in both the length direction and the width direction, guaranteeing the biting strength and avoiding unnecessary material waste. Moreover, while enhancing the biting force, the accuracy of the biting between the rib 8 and the groove 9 can be ensured. In addition, the setting quantity of the grooves 9 and the ribs 8 can be adjusted according to actual production factors.

[0035] During the adhesion and winding process of the extruded square pipe, the inner wall 7 of the pipe 1 is formed. One side of the adhesion layer 2 is connected to the inner wall 7 of the pipe 1, and the other side is connected to the first reinforcing rib 5 of the pipe belt layer 3. Through the mutual engagement of the convex rib 8 and the groove 9 of the second reinforcing rib 6, a stable structure of gear engagement is formed. When subjected to external forces, this engagement structure can effectively disperse stress, prevent damage caused by local stress concentration, and maintain the overall structural stability of the pipe wall.

[0036] The adhesion layer 2 is composed of convex ribs 8 and grooves 9 on the upper and lower sides. The thickness of the adhesion layer 2 is 3 to 5 times that of the convex rib 8, which increases the thickness of the wall joint part. At the same time, the adhesion layer 2 is provided with convex ribs 8 and grooves 9, which not only increases the contact area between the walls, but also increases the contact area and the depth of engagement through physical engagement, disperses stress, effectively resists external forces such as tension and torsion that the pipe 1 may encounter during use, enhances the bonding strength between the walls, and solves the problem of fracture at the bonding part caused by non-tight wall fitting and stress concentration during the winding and forming process of traditional pipes 1.

[0037] The convex rib 8 and the groove 9 are set to be mutually engaging rectangles, so that the groove 9 and the convex rib 8 are tightly engaged. The convex rib 8 and the groove 9 can also be set to be trapezoidal, diamond-shaped, triangular, and irregular shapes, or they can be the fitting of curved surfaces to curved surfaces. The main purpose is to increase the contact area at the wall joint and enhance the reliability of the connection. In addition, a limiting structure can be added to it so that it will not shift or come off when subjected to longitudinal or transverse forces after combination, further enhancing its stability.

[0038] As Figure 4 shown, Embodiment 2 provides an auxiliary support 10.

[0039] An auxiliary support 10 is added at the right angle of the reinforcing rib. The auxiliary support 10 has a rounded corner structure, and both ends are respectively fixed to the two right-angle sides of the convex rib 8 or the groove 9. The arc surface of the auxiliary support 10 faces the right-angle direction of the convex rib 8 or the groove 9. The setting of the convex rib 8 and the groove 9 can increase the contact area between the walls, increase the contact area and the depth of engagement through physical engagement, disperse stress, effectively resist external forces such as tension and torsion that the pipe 1 may encounter during use, and enhance the bonding strength between the walls. At the same time, the reinforcing rib located in the pipe belt layer 3 has higher impact resistance and stiffness. In addition, by setting the auxiliary support 10, the engagement strength between the convex rib 8 and the groove 9 is further enhanced, the rigidity of the right-angle part of the convex rib 8 and the groove 9 is improved, and the right angle is prevented from deforming due to vibration or extrusion, so as to affect the engagement effect and maintain its stable performance and reduce losses. In addition, a limiting structure can be added to it to further enhance its reliability.

[0040] like Figure 5 As shown, this embodiment 3 provides a trapezoidal structural reinforcement rib.

[0041] In the adhesive layer 2, the convex rib 8 in the reinforcing rib of the body structure is an isosceles trapezoid with a smaller upper side than the bottom side, and the groove 9 is a symmetrical shape of the convex rib 8, and 5 to 10 groups are provided. During the biting process, the alignment can be effectively improved; no welding or other operations are required, and the reinforcing ribs of the trapezoidal structure are bitten with each other to enhance the stability of the adhesive layer 2, improve the bonding strength between the wall surfaces, disperse the internal stress of the pipe 1, and reduce the risk of its rupture. The pipe belt layer 3 has 4 to 8 groups of trapezoidal structure reinforcing ribs, and the shorter upper side of the trapezoidal structure faces outward, so that the pipe belt layer 3 has higher impact resistance and rigidity when the pipe 1 is towed. Compared with the method of increasing the wall thickness of the pure solid wall, the weight of the product is relatively lighter, less consumables, and can meet the ring stiffness requirements; in addition, a limiting structure can be added to it to further enhance its reliability.

[0042] like Figure 6 As shown, this embodiment 4 provides a reinforcing pillar 11.

[0043] The reinforcing pillar 11 described in Example 4 is an isosceles trapezoid. It should be noted that it can be set to a rectangle, a triangle, or a reinforcing structure composed of curved surfaces according to actual applications, and is not limited to the isosceles trapezoidal structure mentioned in this embodiment; the reinforcing pillar 11 is arranged inside the convex rib 8 to further improve the rigidity and impact resistance of the reinforcing rib; because the larger the diameter of the square tube wrapped around it, the larger the cross-sectional area of ​​the reinforcing rib or the number of sets of settings, therefore, the size of the reinforcing pillar 11 is also adjusted accordingly.

[0044] In summary, the present utility model discloses a hollow tube with high strength and low gram weight, including a pipe material 1. The pipe material 1 includes an adhesion layer 2 and a pipe belt layer 3. The pipe belt layer 3 is provided with an annular belt 4 wound around the outer periphery of the pipe material 1, and a first reinforcing rib is provided along the direction of the annular belt 4. The adhesion layer 2 includes mutually engaged second reinforcing ribs 6; one side of the adhesion layer 2 is connected to the first reinforcing rib 5, and the other side is connected to the inner wall 7; the first reinforcing rib 5 and the second reinforcing rib 6 are provided with convex ribs 8, and grooves 9 are arranged at adjacent positions on both sides of the convex ribs 8. The convex ribs 8 and the grooves 9 are arranged alternately; the length-to-width ratio of the convex ribs 8 and the grooves 9 is both 1:1; the number of the convex ribs 8 and the grooves 9 provided on the first reinforcing rib 5 is 4 to 8 groups, and the number of the convex ribs 8 and the grooves 9 provided on the second reinforcing rib 6 is 5 to 10 groups; the convex ribs 8 and the grooves 9 are arranged as rectangles capable of mutually engaging; the thickness of the adhesion layer 2 is 3 to 5 times the width of the convex ribs 8. A second reinforcing rib 6 structure is provided at the wall surface and the winding and fitting position of the wall surface of the adhesion layer 2 of the pipe material 1. By providing the convex ribs 8 and the grooves 9 and making them engage with each other, the contact surface area of the wall surface is increased, which not only enhances the connection strength between the wall surfaces, but also improves the stability and reliability of the pipe material 1 under complex stress conditions; a first reinforcing rib 5 is provided on the annular belt 4 on the outer periphery of the pipe belt layer 3, which can increase the rigidity and impact resistance of the annular belt 4. Compared with the method of increasing the wall thickness of a pure solid wall, the gram weight of the product is relatively lighter, and the ring stiffness requirement can be met; in addition, the convex ribs 8 and the grooves 9 can add auxiliary supports 10 and strengthening struts 11 to them, increase strength and wear resistance, and the convex ribs 8 or the grooves 9 can also be set as trapezoids, rhombuses, triangles and irregular shapes, or the fitting of curved surfaces to curved surfaces; the main purpose is to increase the contact area at the wall surface joint and enhance the reliability of the connection; in addition, a limiting structure can be added to it so that it will not shift or come off when subjected to longitudinal or transverse forces after combination, further enhancing its stability.

[0045] The present utility model is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present utility model can also have other implementation manners. For those skilled in the art, any technical solutions formed by making any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-strength, low-weight hollow tube, characterized in that: The invention comprises a pipe (1), wherein the pipe (1) comprises an adhesive layer (2) and a pipe band layer (3), wherein the pipe band layer (3) is provided with an annular band (4) wrapped around the outer periphery of the pipe (1), and a first reinforcing rib (5) is provided along the direction of the annular band (4), wherein the first reinforcing rib (5) is provided with a convex rib (8) and a concave groove (9), and the adhesive layer (2) comprises a second reinforcing rib (6) which are engaged with each other.

2. A high-strength, low-weight hollow tube according to claim 1, characterized in that: The adhesive layer (2) is connected to the first reinforcing rib (5) on one side and to the inner wall (7) on the other side.

3. A high-strength, low-weight hollow tube according to claim 2, characterized in that: The first reinforcing rib (5) and the second reinforcing rib (6) are provided with convex ribs (8), and grooves (9) are provided at adjacent positions on both sides of the convex rib (8).

4. A high-strength, low-weight hollow tube according to claim 3, characterized in that: The length ratio between the convex rib (8) and the groove (9) is 1:

1.

5. A high-strength, low-weight hollow tube according to claim 3 or 4, characterized in that: The width ratio of the convex rib (8) to the groove (9) is 1:

1.

6. A high-strength, low-weight hollow tube according to claim 1, 2 or 3, characterized in that: The number of the convex ribs (8) and the concave grooves (9) provided on the first reinforcing rib (5) is 4 to 8 groups.

7. A high-strength, low-weight hollow tube according to claim 4, characterized in that: The number of the convex ribs (8) and the concave grooves (9) provided on the second reinforcing ribs (6) is 5 to 10 groups.

8. The high-strength and low-weight hollow tube according to claim 6, characterized in that: The convex rib (8) and the concave groove (9) are arranged in a rectangular shape capable of interlocking with each other.

9. The high-strength and low-weight hollow tube according to claim 3, characterized in that: The thickness of the adhesive layer (2) is 3 to 5 times the width of the convex rib (8).

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