Porous square tube and connecting seat

Abstract

The porous square pipe comprises a pipe body, radial rib plates and circumferential rib plates, the section of the pipe body is in a square frame shape, the four corners of the pipe body are provided with round corners, the radial rib plates extend from the round corners to the center of the pipe body, the circumferential rib plates extend from the inner wall of the pipe body to the radial rib plates, and the circumferential rib plates are symmetrically distributed on the two sides of the radial rib plates. The eight circumferential rib plates and the inner wall of the pipe body form a pipe cavity of the porous square pipe together, and reinforcing fibers are at least arranged in the inner wall of one side of the pipe body. The reinforcing fibers can form a supporting effect when the pipe body is stretched, large-amplitude deformation of the pipe body is avoided, in this way, the bending degree of the pipeline can be reduced within a certain range, the pipeline is smoother during laying, the cable is maintained and replaced in the later period, the resistance of the cable penetrating through the pipeline can be reduced, and construction is more convenient and faster.

Description

Technical Field

[0001] This application relates to the field of conduits and conduit fittings for cables and optical fibers, and more particularly to perforated square tubes and connectors. Background Technology

[0002] Compared to high-voltage power transmission cables, low-voltage communication cables are far more numerous. To facilitate maintenance, inspection, or replacement, communication cables are typically installed in multiple channels, often using square conduits. A single conduit can accommodate multiple channels, reducing the cost per channel. However, different cables require conduits of different sizes. A conduit of the same size might accommodate nine channels, four channels, or even just one. Theoretically, a round conduit would be stronger for a single channel, but to fit with other square conduits within the same cable tray, the outer surface is usually designed as square. Internal optimizations can be made, such as using ribbed structures, but due to the elasticity of the material, the overall strength is lower and it is prone to bending. Furthermore, the strength at conduit connection points is relatively lower than other areas, resulting in poor sealing and making it susceptible to groundwater seepage.

[0003] Chinese patent number "CN212435274U" entitled "A Square Hole Grille Pipe" discloses a pipe structure, but this structure can only prevent damage during transportation. However, the pipe will bend during laying, increasing the overall length of the channel and further increasing the cost of the cable. The patent also does not disclose the pipe connection problem. Utility Model Content

[0004] This application provides a porous square tube and a connector to at least solve the strength and connection problems existing in the prior art.

[0005] According to this application, a porous square tube is provided, including a tube body, radial ribs and circumferential ribs. The tube body has a square cross-section and rounded corners at all four corners. The radial ribs extend from the rounded corners to the center of the tube body, and the circumferential ribs extend from the inner wall of the tube body to the radial ribs. The circumferential ribs are symmetrically distributed on both sides of the radial ribs. The eight circumferential ribs together with the inner wall of the tube body form the inner cavity of the porous square tube. Reinforcing fibers are provided inside the inner wall on at least one side of the tube body.

[0006] Compared with existing technologies, the porous square tube of this application has the following advantages: the structural design can save materials while ensuring strength, and the reinforcing fibers can form a supporting effect when the tube is stretched, avoiding large deformation of the tube. This can reduce the degree of bending of the pipe to a certain extent, making the pipe laying smoother. In the later maintenance and replacement of cables, the resistance of the cable passing through the pipe can be reduced, and the construction is more convenient and faster.

[0007] In one embodiment, reinforcing fibers are symmetrically arranged on both sides of the pipe body, so that the pipe can bend more in one direction and bend less or almost not in the other direction. For example, it can bend almost no way in the horizontal direction, but can bend within a certain range in the vertical direction.

[0008] In one embodiment, the tube body includes an inner wall, rounded corners, and a transition wall. The thickness of the inner wall is greater than the thickness of the rounded corners, and the thickness of the rounded corners is greater than the thickness of the transition wall. This reduces the wall thickness as much as possible while ensuring strength, thereby reducing material costs.

[0009] In one embodiment, the thickness of the radial rib near the rounded corner is less than the thickness of the circumferential rib, which increases strength and prevents large deformation.

[0010] In one embodiment, a connector is provided at one end of the porous square tube. The connector and the porous square tube are integrally formed by secondary injection molding. That is, the porous square tube is first formed by extrusion, and then the porous square tube is placed into the mold to form the connector. In this way, the connector and the porous square tube form an integral structure, which makes installation more convenient. The connection can be completed by simply inserting the porous square tube into one end of the connector. This also reduces the amount of glue used and lowers the risk of leakage.

[0011] In one embodiment, the outer surface of the connector has a certain taper so that the end of the connector away from the porous square tube is larger than the end close to the porous square tube, thus achieving a smooth transition in the connection.

[0012] A connector for a porous square tube, used with the aforementioned porous square tube, includes a connecting part, a first sleeve part, and a second sleeve part. The connecting part is located between the first sleeve part and the second sleeve part, with both ends connected to the first sleeve part and the second sleeve part, respectively. The first sleeve part and the second sleeve part are symmetrically designed relative to the connecting part. Both the first sleeve part and the second sleeve part are provided with an installation cavity, which matches the porous square tube and can be sleeved on the outside of the porous square tube. Both the first sleeve part and the second sleeve part are provided with a plug-in part, which can abut against the circumferential rib when plugged into the porous square tube. The plug-in part provides support to the inside of the porous square tube, making the connection tighter, reducing the amount of glue used, and improving the sealing performance, thus reducing the likelihood of groundwater leakage.

[0013] In one embodiment, the connecting seat is square and has locking holes extending along the circumference of the pipe at each right angle position, so that each connecting seat is fixed together to form an integral structure.

[0014] In one embodiment, the locking hole is provided with a matching U-pin that can fix two adjacent connecting seats together by means of the U-pin, making locking more convenient.

[0015] In one embodiment, the connector is provided with multiple parts, and each connector matches one hole of the multi-hole square tube. The connector is provided with a round hole, which makes the connection more stable and reduces the overall weight of the connector.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0017] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0018] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0019] Figure 1 A schematic diagram of the overall structure of the porous square tube according to an embodiment of this application is shown;

[0020] Figure 2 A schematic diagram of the end face structure of the porous square tube according to an embodiment of this application is shown;

[0021] Figure 3 This paper shows a three-dimensional schematic diagram of the overall structure of the porous square tube according to an embodiment of this application;

[0022] Figure 4 A schematic diagram of the connector for the porous square tube according to an embodiment of this application is shown;

[0023] Figure 5 This diagram shows a schematic of the connector of the porous square tube in an installation state according to an embodiment of this application;

[0024] Figure 6 This paper shows a schematic diagram of the installation of the connector seat for the porous square tube according to an embodiment of this application;

[0025] Figure 7 A schematic cross-sectional view of the U-shaped pin of the connector according to an embodiment of this application is shown. Detailed Implementation

[0026] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Example 1:

[0028] like Figure 1 and Figure 2 As shown in the figure, the HBSTF tube developed by a certain company, namely a porous square tube, is shown in the figure with appropriate adjustments to the scale. The HBSTF porous square tube includes a tube body 1, radial ribs 2, and circumferential ribs 3. The tube body 1 has a rectangular cross-section with rounded corners 13 at each of its four corners. The radial ribs 2 extend from the rounded corners 13 toward the center of the tube body 1. The circumferential ribs 3 extend from the inner wall of the tube body 1 toward the radial ribs 2. The circumferential ribs 3 are symmetrically distributed on both sides of the radial ribs 2. The eight circumferential ribs 3, together with the inner wall of the tube body 1, form a 12-sided inner cavity 5 of the porous square tube. Reinforcing fibers 6 are provided inside the inner wall on at least one side of the tube body 1. The reinforcing fibers 6 are inorganic fibers or synthetic fibers. The physical performance indicators of the finally obtained HBSTF porous square tube are shown in Table 1 below.

[0029] Table 1

[0030]

[0031] like Figure 1 and Figure 2 As shown, reinforcing fibers 6 are symmetrically arranged on both sides of the pipe body 1. This makes bending very easy in the direction where reinforcing fibers 6 are not installed. If one reinforcing fiber 6 is installed on each side, the bending chord height of a 6-meter-long pipe can reach more than 1.2 meters. Special elbows can be used for special deflections. During construction, bends or crossings with other pipelines can be easily avoided. Bending basically does not occur in the direction where reinforcing fibers 6 are installed. If the reinforcing fibers 6 are concentrated in the central area, the pipe body 1 is easier to bend; if they are placed at the four corners, bending basically does not occur, but a certain angle of twisting is possible.

[0032] like Figure 1 and Figure 2 As shown, the pipe body 1 includes an inner wall 10, rounded corners 13, and a transition wall 11. The thickness of the inner wall 10 is greater than the thickness of the rounded corners 13, and the thickness of the rounded corners 13 is greater than the thickness of the transition wall 11. The HBSTF porous square pipe has an arc-shaped square shape, which is neat and convenient to arrange. It occupies a small pipe space, only 10% of the space required for cement pipes, requires less excavation, effectively saves urban underground pipe space resources, and has little impact on road traffic and municipal works.

[0033] like Figure 1 and Figure 2 As shown, the thickness of the radial rib 2 near the fillet 13 is less than the thickness of the radial rib 3 near the circumferential rib 3.

[0034] like Figure 1 , Figure 2 and Figure 3As shown, one end of the HBSTF porous square tube is provided with a connecting seat 4, and the connecting seat 4 and the tube body 1 of the HBSTF porous square tube are integrally formed by secondary injection molding.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the outer surface of the connector 4 has a certain taper, so that the end of the connector 4 away from the HBSTF porous square tube is larger than the end close to the HBSTF porous square tube.

[0036] Example 2:

[0037] like Figure 4 and Figure 5 As shown, the connecting seat 4 for the HBSTF porous square tube in Embodiment 1 includes a connecting part 41, a first sleeve part 42, and a second sleeve part 43. The connecting part 41 is located between the first sleeve part 42 and the second sleeve part 43. The two ends of the connecting part 41 are respectively connected to the first sleeve part 42 and the second sleeve part 43. The first sleeve part 42 and the second sleeve part 43 are symmetrically designed relative to the connecting part 41. Both the first sleeve part 42 and the second sleeve part 43 are provided with an installation cavity 45. The installation cavity 45 matches the HBSTF porous square tube and can be sleeved on the outside of the HBSTF porous square tube. Both the first sleeve part 42 and the second sleeve part 43 are provided with a plug-in part 44. When the plug-in part 44 is plugged into the HBSTF porous square tube, it can abut against the circumferential rib plate 3.

[0038] like Figure 4 and Figure 5 As shown, the plug-in part 44 is provided in multiple ways, and each plug-in part 44 matches one hole of the HBSTF multi-hole square tube. The plug-in part 44 is provided with a round hole 46.

[0039] Example 3:

[0040] like Figure 6 and Figure 7 As shown, in one embodiment, the connecting seat 4 is square and has locking holes 47 extending circumferentially along the pipe at each right-angle position. The locking holes 47 are through holes, which facilitates fixing. The four locking holes 47 of the connecting seat 4 can be fixed together with the four connecting seats 4 on the top, bottom, left, and right sides, respectively.

[0041] like Figure 6 and Figure 7 As shown, the locking hole 47 is equipped with a matching U-shaped pin 7, which can fix two adjacent connecting seats 4 together by means of the U-shaped pin 7. The U-shaped pin 7 is provided with a pin hole, into which a steel wire can be inserted to limit the position of the U-shaped pin 7 and prevent the U-shaped pin 7 from falling off.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A porous square tube, characterized in that, The tube includes a tube body (1), radial ribs (2) and circumferential ribs (3). The tube body (1) has a square cross-section and rounded corners (13) at all four corners. The radial ribs (2) extend from the rounded corners (13) toward the center of the tube body (1). The circumferential ribs (3) extend from the inner wall (10) of the tube body (1) toward the radial ribs (2). The circumferential ribs (3) are symmetrically distributed on both sides of the radial ribs (2). The eight circumferential ribs (3) together with the inner wall (10) of the tube body (1) form the inner cavity (5) of the porous square tube. Reinforcing fibers (6) are provided inside the inner wall (10) on at least one side of the tube body (1).

2. The porous square tube according to claim 1, characterized in that, The reinforcing fibers (6) are symmetrically arranged on both sides of the tube body (1).

3. The porous square tube according to claim 1, characterized in that, The tube body (1) includes an inner wall (10), a rounded corner (13) and a transition wall (11), wherein the thickness of the inner wall (10) is greater than the thickness of the rounded corner (13) and the thickness of the rounded corner (13) is greater than the thickness of the transition wall (11).

4. The porous square tube according to claim 1, characterized in that, The thickness of the radial rib (2) near the rounded corner (13) is less than the thickness near the circumferential rib (3).

5. The porous square tube according to any one of claims 1-4, characterized in that, One end of the porous square tube is provided with a connecting seat (4), and the connecting seat (4) and the porous square tube are integrally formed by secondary injection molding.

6. The porous square tube according to claim 5, characterized in that, The outer surface of the connector (4) has a certain taper, so that the end of the connector (4) away from the porous square tube is larger than the end close to the porous square tube.

7. A connector for a porous square tube, characterized in that, It includes a connecting part (41), a first sleeve part (42) and a second sleeve part (43). The connecting part (41) is located between the first sleeve part (42) and the second sleeve part (43). The two ends of the connecting part (41) are respectively connected to the first sleeve part (42) and the second sleeve part (43). The first sleeve part (42) and the second sleeve part (43) are symmetrically designed relative to the connecting part (41). The first sleeve part (42) and the second sleeve part (43) are both provided with an installation cavity (45). The installation cavity (45) matches the porous square tube and can be sleeved on the outside of the porous square tube. The first sleeve part (42) and the second sleeve part (43) are both provided with a plug-in part (44). The plug-in part (44) can abut against the circumferential rib (3) when it is plugged into the porous square tube.

8. The connecting seat for the porous square tube according to claim 7, characterized in that, The connecting seat (4) is square and has locking holes (47) extending along the circumference of the pipe at each right angle position.

9. The connecting seat for the porous square tube according to claim 8, characterized in that, The locking hole (47) is provided with a matching U-pin (7) which can fix two adjacent connecting seats (4) together by means of the U-pin (7).

10. The connecting seat for the porous square tube according to claim 9, characterized in that, The plug-in portion (44) is provided in multiple ways and each plug-in portion (44) matches one hole of the multi-hole square tube. The plug-in portion (44) is provided with a round hole (46).

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