Glass fiber reinforced plastic process micro jacking pipe

Abstract

The utility model discloses a glass fiber reinforced plastic process micro jacking pipe which comprises a pipe body and pipe ends distributed at the two ends of the pipe body, the thickness of the pipe ends is larger than that of the pipe body, and the thickness of the pipe ends is 1.5-4 times that of the pipe body. According to the glass fiber reinforced plastic process micro-jacking pipe, the thickness of the pipe end is larger than that of the pipe body, and after the rubber ring groove is formed in the pipe end in a trimming mode, the jacking of the pipe end is still larger than or equal to that of the pipe body, so that weak links of the pipe end are avoided, and the phenomenon that the glass fiber reinforced plastic process micro-jacking pipe is torn due to uneven stress in the construction process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking technology, specifically to a fiberglass micro-jacking pipe. Background Technology

[0002] Pipe jacking technology is a trenchless pipeline laying construction technique used in municipal construction. Traditional fiberglass reinforced plastic (FRP) pipe jacking has a structure where both ends are made of pure FRP, while the middle section is a sand-filled pipe. Grooves are cut at both ends for installing sealing rings. In this configuration, the thickness of the pure FRP ends is reduced, resulting in a lower jacking force at both ends. However, because the compressive strength of pure FRP is more than 100% greater than that of the sand-filled pipe, the jacking force at both ends is still higher than that of the pipe body, and it does not create a weak point in the overall structure.

[0003] For jacking pipes where the entire pipe body and ends are made of pure fiberglass, with the same overall thickness, the jacking force at the pipe ends is lower than that at the pipe body because the rubber ring groove is relatively thin. This creates a weak point at the pipe ends, and during the jacking process, uneven stress during construction can cause the rubber ring groove to tear.

[0004] Therefore, it is necessary to provide a new fiberglass micro-jacking pipe to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fiberglass micro jacking pipe with a pipe end thickness greater than the pipe body. After the rubber ring groove is made at the pipe end, the jacking thickness at the pipe end is still greater than or equal to that at the pipe body, so that there will be no weak points at the pipe end and the fiberglass micro jacking pipe will not tear due to uneven stress during construction.

[0006] The technical solution of this utility model is:

[0007] A fiberglass micro-jacking pipe includes a pipe body and pipe ends distributed at both ends of the pipe body. The thickness of the pipe ends is greater than the thickness of the pipe body, and the thickness of the pipe ends is 1.5-4 times the thickness of the pipe body.

[0008] Furthermore, the outer edges at both ends of the tube body are connected to the outer surface of the tube end through a transition surface, which is an inclined plane.

[0009] Furthermore, the axial length of the tube end is 200-300mm.

[0010] Furthermore, the tube end includes a base layer with the same thickness as the tube body, a thickening layer wrapped around the surface of the base layer, and an axial strength reinforcing layer disposed within the thickening layer.

[0011] Furthermore, the axial strength reinforcing layer is a glass cloth layer or a unidirectional cloth layer.

[0012] Furthermore, the axial strength reinforcing layer consists of 2-4 layers, which are spaced apart within the thickened layer.

[0013] Compared with existing technologies, the fiberglass micro-jacking pipe provided by this utility model has the following advantages:

[0014] 1. The fiberglass micro-jacking pipe of this utility model has a pipe end thickness greater than the pipe body. After the rubber ring groove is made at the pipe end, the jacking thickness at the pipe end is still greater than or equal to that at the pipe body, thus preventing weak points at the pipe end and preventing tearing of the fiberglass micro-jacking pipe due to uneven stress during construction.

[0015] II. The fiberglass micro-jacking pipe of this utility model has the outer edges of both ends of the pipe body connected to the outer surface of the pipe end through a transition surface, and the transition surface is a sloping plane, which is conducive to the transmission of axial force.

[0016] III. The fiberglass micro-jacking pipe of this utility model includes a base layer with the same thickness as the pipe body and a thickened layer wrapped around the surface of the base layer. The thickened layer is provided with an axial strength reinforcing layer, thereby enhancing the axial strength of the pipe end. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the fiberglass micro-jacking pipe of this utility model. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, and to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be further described below.

[0020] It should be noted that the descriptions of these embodiments are for the purpose of aiding understanding of the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Please see Figure 1This is a structural schematic diagram of the fiberglass micro-jacking pipe of this utility model. The fiberglass micro-jacking pipe of this utility model includes a pipe body 1 and pipe ends 2 distributed at both ends of the pipe body. Both the pipe body 1 and the pipe ends 2 are made of pure fiberglass material, and the thickness of the pipe ends 2 is greater than the thickness of the pipe body 1, and the thickness of the pipe ends 2 is 1.5-4 times the thickness of the pipe body. After the jacking pipe is manufactured, a rubber ring groove is made at the pipe ends. Because the thickness of the pipe ends is greater than the thickness of the pipe body, even after the rubber ring is made, the thickness of the pipe ends is still greater than that of the pipe body, ensuring that the jacking strength of the pipe ends is greater than or equal to that of the pipe body. This prevents weak points at the pipe ends and avoids tearing due to uneven stress during construction.

[0022] In this embodiment, the outer edges of both ends of the tube body 1 are connected to the outer surface of the tube end through a transition surface 3, and the transition surface is an inclined surface, which is beneficial to the transmission of axial force between the tube body and the tube end.

[0023] In this embodiment, the tube end 2 includes a base layer 21 with the same thickness as the tube body, a thickening layer 22 wound around the surface of the base layer 21, and an axial strength reinforcing layer 23 disposed within the thickening layer 22. Specifically, the base layer 21 is formed simultaneously with the tube body 1. That is, after the fiberglass material is wound to the required thickness of the tube body, the winding of the fiberglass material stops at the tube body, while the winding continues at the tube end to make its thickness greater than the tube body thickness. Therefore, the material of the thickening layer 22 is also fiberglass. In order to enhance the axial strength of the tube end, glass cloth or unidirectional cloth is added during the fabrication of the thickening layer to form the axial strength reinforcing layer 23. Preferably, there are 2-4 layers of axial strength reinforcing layer 23, which are distributed at intervals within the thickening layer 22 to improve the axial strength of the tube end and increase the top force of the tube end. Correspondingly, when the material used is glass cloth, the axial strength reinforcing layer is a glass cloth layer; when the material used is unidirectional cloth, the axial strength reinforcing layer is a unidirectional cloth layer.

[0024] In this embodiment, the axial length of the pipe end 2 is 200-300mm, preferably 250mm.

[0025] The thickness of the fiberglass micro-jacking pipe of this invention, as well as the thickness of the pipe body and the pipe end, are matched according to the diameter of the equipment at the construction site.

[0026] The embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A fiberglass micro-jacking pipe, characterized in that, It includes a tube body and tube ends distributed at both ends of the tube body. The thickness of the tube ends is greater than the thickness of the tube body, and the thickness of the tube ends is 1.5-4 times the thickness of the tube body.

2. The fiberglass micro-jacking pipe according to claim 1, characterized in that, The outer edges at both ends of the tube body are connected to the outer surface of the tube end through a transition surface, which is an inclined plane.

3. The fiberglass micro-jacking pipe according to claim 1, characterized in that, The axial length of the pipe end is 200-300mm.

4. The fiberglass micro-jacking pipe according to any one of claims 1-3, characterized in that, The tube end includes a base layer with the same thickness as the tube body, a thickened layer wrapped around the surface of the base layer, and an axial strength reinforcing layer disposed within the thickened layer.

5. The fiberglass micro-jacking pipe according to claim 4, characterized in that, The axial strength reinforcing layer is a glass cloth layer or a unidirectional cloth layer.

6. The fiberglass micro-jacking pipe according to claim 5, characterized in that, The axial strength reinforcing layer consists of 2-4 layers, which are spaced apart within the thickened layer.

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