Secondary anti-falling structure and anti-falling pipe

Abstract

The utility model relates to the field of pipes, in particular to a secondary anti-falling structure and an anti-falling pipe. Comprising an inserting pipe section and an adapting pipe section capable of adapting the inserting pipe section, the adapting pipe section is provided with a first limiting part protruding towards the interior of the adapting pipe section, the inserting pipe section is provided with a clamping part capable of forming axial abutting limiting with the first limiting part, and a first axial clamping structure is formed when the clamping part is in butt joint with the first limiting part; the socket pipe section is further provided with a radial inner top capable of changing in the radial direction, the inserting pipe is further provided with a second limiting part capable of being connected with the radial inner top in a clamped mode, and when the socket pipe section is axially pulled by the inserting pipe section, the radial inner top can protrude towards the interior of the pipe in the radial direction. And therefore, a second axial clamping structure can be formed by being inserted into the second limiting part. The utility model provides a secondary anti-falling structure and an anti-falling pipe. The anti-drawing capacity can be improved.

Description

Technical Field

[0001] The present application relates to the field of pipes, and in particular to a secondary anti-slip structure and an anti-slip pipe. Background Art

[0002] Pipes are essential materials for construction projects, and are commonly used for water supply and drainage pipes. For ease of transportation, individual pipe sections are limited in length and require on-site docking. However, prior art reports indicate that geological subsidence can create axial pull forces on pipes, forcing them to shift axially or even separate from their connections, resulting in a decrease in sealing performance. In severe cases, groundwater can infiltrate the pipes, paralyzing the network. Summary of the Invention

[0003] In view of this, the present application provides a secondary anti-slip structure and an anti-slip pipe, which can improve the pull-out resistance.

[0004] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A secondary anti-slip structure, characterized in that it includes an inserting tube section and a receiving tube section that can receive the inserting tube section, the receiving tube section is provided with a first limiting portion protruding into the tube, the inserting tube section is provided with a clamping portion that can form an axial contact limit with the first limiting portion, and a first axial clamping structure is formed when the clamping portion and the first limiting portion are docked; the receiving tube section is also provided with a radially changeable radial inner top portion, and the inserting tube is also provided with a second limiting portion that can be clamped with the radial inner top portion, when the receiving tube section is axially pulled by the inserting tube section, the radial inner top portion can radially protrude into the tube, so that it can be inserted into the second limiting portion to form a second axial clamping structure.

[0006] The above-mentioned present application is a secondary anti-slip structure, in which after the plug-in pipe section and the receiving pipe section are docked, the clamping part is clamped with the first limiting part. During the geological settlement process, the plug-in pipe section and the receiving pipe section are pulled against each other. During the pulling process, the radial inner top will protrude radially into the pipe and be inserted into the second limiting part to form a second axial clamping structure. In this way, a double clamping structure can be formed, thereby improving the pull-out resistance of the pipe.

[0007] In some embodiments, the radially inner top includes an elastic M-shaped anti-slip wave integrally formed on the receiving pipe segment, and the wall thickness of the two side peaks of the M-shaped anti-slip wave is smaller than the wall thickness of the central trough.

[0008] The two clamping structures can play a synergistic anti-slip effect with each other. On the one hand, after the two work together, the overall anti-slip force is improved. On the other hand, the second clamping structure only participates in the work after the first clamping structure has worked to a certain extent. There is a sequential process here. In addition, the M-type anti-slip wave also plays the role of a telescopic joint buffer during the pulling process and enhances the circumferential strength of the socket. During pulling, due to the radial contraction of the M wave, the sealing effect of the sealing ring is further enhanced. In this process, due to the certain radial contraction of the socket, the friction between it and the sealing ring is increased. Therefore, during the entire axial pulling process, the more pulling, the stronger the anti-pulling force.

[0009] The wall thickness of the two side peaks of the M-shaped anti-slip wave is smaller than that of the central trough. This causes the side peaks to first contract radially inward during the drawing process, while the thicker central trough, less likely to deform outward, continues to extend inward. This allows the M-shaped anti-slip wave to engage the second stopper, forming a secondary anti-slip structure.

[0010] In some embodiments, the M-shaped anti-shedding wave is a full-circle annular tube structure, and the middle trough of the M-shaped anti-shedding wave is a full-circle annular groove body.

[0011] In some embodiments, the M-shaped anti-shedding wave is a full-circle annular tube structure, and the middle wave trough of the M-shaped anti-shedding wave is arranged in segments at intervals in the circumferential direction, and the two circumferentially adjacent middle wave troughs are connected by a connecting wall segment integrally arranged with the two side wave peaks, so that in the circumferential direction, the middle wave trough and the connecting wall segment are distributed in a convex and concave pattern.

[0012] In some embodiments, the middle trough of the M-shaped anti-slip wave is further provided with a fastening ring. The purpose of adding the fastening ring is to limit the outward deformation of the middle trough.

[0013] In some embodiments, the engaging portion includes a radially variable elastic expansion portion. When the inserting pipe section and the receiving pipe section are mated together, the elastic expansion portion is pressed against the first limiting portion and radially contracts, being pushed into the engaging position of the first limiting portion. The elastic expansion portion then automatically returns to its radially expanded position, forming an axial contact position with the first limiting portion. During the axial mating process between the inserting pipe section and the receiving pipe section, the elastic expansion portion is first elastically compressed and then automatically returns to its engaging position. This installation structure can greatly improve the efficiency of on-site pipe installation.

[0014] In some embodiments, the elastic expansion portion is integrally connected to a recessed portion. When subjected to radial compression, the elastic expansion portion bends with the recessed portion as the bending position, and the elastic expansion portion and the interior of the recessed portion form a single, integral hollow structure. The elastic expansion portion is integrally formed on the plug-in tube segment or separately fixedly mounted on the plug-in tube segment, wherein the fixing method can be bolt clamping, anchoring, or other methods.

[0015] The present application also provides an anti-slip pipe, which is characterized by comprising a pipe body, with the above-mentioned inserting pipe section and receiving pipe section respectively provided at both ends of the pipe body.

[0016] In some embodiments, the tube body is a circular tube, the outer periphery of the clamping portion is a regular polygon, and the outer periphery of the clamping portion has a contact flat surface. The outer shape of the clamping portion can be a quadrilateral, a pentagon, or other shapes. This configuration is intended to form a contact flat surface on the outer periphery of the clamping portion. Compared to a circular structure, the tube has a surface contact with the ground during placement, which improves stability. Moreover, the flat contact can disperse gravity, making it less likely to damage the protruding portion.

[0017] In some embodiments, the plug-in pipe section is a corrugated plug with alternating concave and convex parts, wherein the second limiting portion is a trough structure in the corrugated plug, the tube body is also a corrugated tube, and the first limiting portion is an anti-slip groove integrally formed on the receiving pipe section.

[0018] In some embodiments, a sealing ring is fixedly mounted on the inserting pipe section, and a cone portion is provided on the receiving pipe for extrusion with the sealing ring. The sealing ring is mainly used to ensure sealing.

[0019] It can be seen from the above technical solution that this application has at least the following advantages and positive effects:

[0020] The above-mentioned present application is a secondary anti-slip structure, in which after the plug-in pipe section and the receiving pipe section are docked, the clamping part is clamped with the first limiting part. During the geological settlement process, the plug-in pipe section and the receiving pipe section are pulled against each other. During the pulling process, the radial inner top will protrude radially into the pipe and be inserted into the second limiting part to form a second axial clamping structure. In this way, a double clamping structure can be formed, thereby improving the pull-out resistance of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the use state of the plug-in pipe section and the receiving pipe section when axially plugged in according to the embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the use status of the plug-in pipe section and the receiving pipe section in the embodiment of the present application;

[0024] Figure 4 This is a side view of the plug-in pipe section in the embodiment of the present application;

[0025] Figure 5 Schematic diagram of the clamping connection between the clamping portion and the first limiting portion in the embodiment of the present application;

[0026] Figure 6 This is a structural diagram of a receiving pipe section in an embodiment of the present application;

[0027] Figure 7 This is a structural diagram of another receiving pipe section in an embodiment of the present application;

[0028] Figure 8 This is a structural diagram of the plug-in pipe section in an embodiment of the present application.

[0029] Explanation of reference numerals: 1. Inserting tube section; 11. Clamping portion; 111. Elastic expansion portion; 112. Recessed portion; 113. Contact plane; 12. Second limiting portion; 2. Receiving tube section; 21. First limiting portion; 22. Radially inner top portion; 221. Middle trough; 222. Side trough; 23. Cone; 3. Fastening ring; 4. Tube body; 5. Sealing ring; DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings. The terms used in the implementation methods of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0031] See Figures 1 to 8 The embodiment of the present application provides an anti-slip pipe, including a pipe body 4, with an inserting pipe section 1 and a receiving pipe section 2 respectively provided at both ends of the pipe body 4, the receiving pipe section 2 can receive the inserting pipe section 1 of the adjacent pipe, the receiving pipe section 2 is provided with a first limiting portion 21 protruding into the pipe, the inserting pipe section 1 is provided with a clamping portion 11 that can form an axial contact limit with the first limiting portion 21, and the clamping portion 11 forms a first axial clamping structure when docking with the first limiting portion 21; the receiving pipe section 2 is also provided with a radially changeable radial inner top 22, and the inserting pipe is also provided with a second limiting portion 12 that can be clamped with the radial inner top 22, and when the receiving pipe section 2 is axially pulled by the inserting pipe section 1, the radial inner top 22 can radially protrude into the pipe, so that it can be inserted into the second limiting portion 12 to form a second axial clamping structure.

[0032] After the plug-in pipe section 1 and the receiving pipe section 2 are docked, the clamping portion 11 is clamped with the first limiting portion 21. During the geological settlement process, the plug-in pipe section 1 and the receiving pipe section 2 are pulled against each other. During the pulling process, the radial inner top 22 will protrude radially into the pipe and be inserted into the second limiting portion 12 to form a second axial clamping structure. In this way, a double clamping structure can be formed, thereby improving the pipe's anti-pullout ability.

[0033] In some embodiments, the radially inner top 22 includes an elastic M-shaped anti-slip wave integrally formed on the receiving pipe section 2 , wherein the wall thickness of the two side peaks 222 of the M-shaped anti-slip wave is smaller than the wall thickness of the central trough 221 thereof.

[0034] The two clamping structures can play a role in synergizing with each other to prevent the product from falling off. On the one hand, after the two work together, the overall anti-slip force is improved. On the other hand, the second clamping structure will only work after the first clamping structure has worked to a certain extent (making the axial and radial deformation of the M-type anti-slip wave reach a certain degree). There is a sequential process here, and the M-type anti-slip wave also plays the role of a telescopic joint buffer and enhances the annular strength of the socket during the drawing process. During drawing, due to the radial contraction of the M wave, the sealing effect of the sealing ring is further enhanced (the problem of decreased sealing performance after axial movement to a certain position will not occur). In addition, in this process, due to the certain radial contraction of the socket, the friction between it and the sealing ring is increased. Therefore, during the entire axial drawing process, the more the product is drawn, the stronger the anti-pulling force will be.

[0035] The wall thickness of the two side peaks 222 of the M-shaped anti-shedding wave is smaller than the wall thickness of the middle trough 221. Figure 3 In this way, during the drawing process, the side peaks 222 of the M-shaped anti-slip wave will first shrink radially inwardly, while the middle troughs are thicker and less likely to deform outwardly, but continue to extend inwardly. This will then snap into the second stopper to form a secondary anti-slip structure.

[0036] In some embodiments, see Figure 6 The M-shaped anti-shedding wave is a full-circle annular tube structure, and the middle trough 221 of the M-shaped anti-shedding wave is a full-circle annular groove body.

[0037] In some embodiments, see Figure 7 The M-shaped anti-shedding wave is a full-circle annular tube structure, and the middle wave trough 221 of the M-shaped anti-shedding wave is arranged in segments at intervals in the circumferential direction. The two circumferentially adjacent middle wave troughs 221 are connected by a connecting wall segment 223 integrally arranged with the two side wave peaks 222, so that in the circumferential direction, the middle wave trough 221 and the connecting wall segment 223 are distributed in a convex and concave pattern.

[0038] The connecting wall section 223 is a convex structure connected between the two side peaks 222. When the tube is axially stretched, the outer diameter of the connecting arm section 223 is difficult to decrease, and no deformation occurs at this position. The middle trough 221 without the connecting arm section 223 is a concave structure, and the middle trough is easy to bulge into the tube during axial pulling.

[0039] In some embodiments, see Figure 3 The middle trough 221 of the M-shaped anti-fall wave is also sleeved with a fastening ring 3. The purpose of adding the fastening ring is to limit the middle trough 221 from deforming outward.

[0040] In some embodiments, see Figure 1 The clamping portion 11 includes a radially variable elastic expansion portion 111. When the inserting pipe section 1 and the receiving pipe section 2 are mated together, the elastic expansion portion 111 is pressed by the first limiting portion 21 and pushed into the clamping position of the first limiting portion 21 in a radially contracting manner. The elastic expansion portion 111 then automatically returns to its original position by radial expansion, forming an axial contact limit with the first limiting portion 21. During the axial mating process between the inserting pipe section 1 and the receiving pipe section, the elastic expansion portion 111 is first elastically compressed and then automatically returns to its original position after reaching the clamping position. This installation structure can greatly improve the efficiency of on-site pipe installation.

[0041] In some embodiments, the elastic expansion portion 111 is integrally connected to a recessed portion 112. When subjected to radial compression, the elastic expansion portion 111 bends with the recessed portion 112 as the bending position, and the interiors of the elastic expansion portion 111 and the recessed portion 112 form a single, integral hollow structure. The elastic expansion portion 111 is integrally formed on the plug-in pipe section 1 or separately fixedly mounted on the plug-in pipe section 1. The fixed mounting method may be bolt clamping, anchoring, or other methods.

[0042] In some embodiments, the tube body 4 is a circular tube, the outer periphery of the clamping portion 11 is a regular polygon, and the outer periphery of the clamping portion 11 has a contact plane 113. The outer shape of the clamping portion 11 can be a quadrilateral, a pentagon, or other polygon. The purpose of this configuration is to form the contact plane 113 on the outer periphery of the clamping portion 11. Compared to a circular structure, the tube is in surface contact with the ground during placement, which improves stability. In addition, the flat contact can disperse gravity and is less likely to damage the protruding portion.

[0043] In some embodiments, the plug-in tube section 1 is a corrugated plug with alternating concave and convex portions, wherein the second limiting portion 12 is a crest in the corrugated plug, and the tube body 4 is also a corrugated tube.

[0044] In some embodiments, a sealing ring 5 is fixedly mounted on the inserting pipe section 1, and a cone 23 is provided on the receiving pipe for extrusion with the sealing ring 5. The sealing ring 5 is mainly used to ensure sealing.

[0045] In some embodiments, the anti-slip groove may be a square, polygonal or circular groove.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A secondary anti-slip structure, characterized by: The plug-in tube section includes a first limiting portion protruding into the tube thereof and a clamping portion capable of forming an axial contact limit with the first limiting portion is provided on the plug-in tube section, and a first axial clamping structure is formed when the clamping portion is docked with the first limiting portion; the receiving tube section is also provided with a radially inner top portion that can be radially changed, and the plug-in tube is also provided with a second limiting portion that can be clamped with the radial inner top portion, and when the receiving tube section is axially pulled by the plug-in tube section, the radial inner top portion can protrude radially into the tube, so that it can be inserted into the second limiting portion to form a second axial clamping structure.

2. A secondary anti-slip structure according to claim 1, characterized in that: The radial inner top portion includes an elastic M-shaped anti-slip wave integrally formed on the receiving pipe section, wherein the wall thickness of the two side wave peaks of the M-shaped anti-slip wave is smaller than the wall thickness of the middle wave valley.

3. A secondary anti-slip structure according to claim 2, characterized in that: The M-shaped anti-shedding wave is a full-circle annular tube structure, and the middle trough of the M-shaped anti-shedding wave is a full-circle annular groove body.

4. A secondary anti-slip structure according to claim 2, characterized in that: The M-shaped anti-shedding wave is a full-circle annular tube structure, and the middle wave trough of the M-shaped anti-shedding wave is arranged in segments at intervals in the circumferential direction. The two circumferentially adjacent middle wave troughs are connected by a connecting wall segment integrally arranged with the two side wave peaks, so that in the circumferential direction, the middle wave trough and the connecting wall segment are distributed in a convex and concave manner.

5. The secondary anti-slip structure according to claim 2, characterized in that: The middle trough of the M-shaped anti-slip wave is also sleeved with a fastening ring.

6. A secondary anti-slip structure according to claim 1, characterized in that: The clamping portion includes a radially variable elastic expansion portion. When the plug-in pipe section and the receiving pipe section are docked with each other, the elastic expansion portion is pushed into the clamping position of the first limiting portion in a radially contracted manner under the top pressure of the first limiting portion, and the elastic expansion portion automatically resets in a radially expanding manner to form an axial contact limit with the first limiting portion.

7. The secondary anti-slip structure according to claim 1, characterized in that: The elastic expansion portion is also integrally connected with a recessed portion. When the elastic expansion portion is subjected to radial compression, the elastic expansion portion bends with the recessed portion as the bending position. The interior of the elastic expansion portion and the recessed portion form an integral hollow structure.

8. An anti-slip pipe, characterized by: The invention comprises a pipe body, and an inserting pipe section and a receiving pipe section according to one of claims 1 to 7 are respectively arranged at both ends of the pipe body.

9. The anti-slip pipe according to claim 8, characterized in that: The tube body is a circular tube, the outer periphery of the clamping portion is a regular polygon, and the outer periphery of the clamping portion has a contact plane.

10. The anti-slip pipe according to claim 8, characterized in that: The plug-in tube section is a corrugated plug with alternating concave and convex parts, wherein the second limiting part is a trough structure in the corrugated plug, the tube body is also a corrugated tube, the first limiting part is an anti-slip groove integrally formed on the receiving tube section, a sealing ring is also fixedly installed on the plug-in tube section, and the receiving tube is also provided with a cone portion that cooperates with the sealing ring for extrusion.

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