Jacking pipe sealing structure

Abstract

According to the jacking pipe sealing structure, after jacking pipes are connected, the part, located outside the first connecting inclined face, of the first expansion strip can be contained in the second expansion groove, and when the first connecting end and the second connecting end are connected in an inserted mode more tightly, the connecting gap between the first expansion strip and the second connecting inclined face is smaller; after the first expansion strip is expanded in water, the sealing performance of the joint of the first connecting inclined surface and the second connecting inclined surface is realized; the second expansion strips expand after meeting water to achieve the sealing performance of the connecting position of the first connecting vertical face and the second connecting vertical face. The supporting strips have the supporting and stabilizing effects, and the situation that the second expansion strips are expanded and torn at the connecting positions of the first connecting vertical faces and the second connecting vertical faces is avoided; when the gland is subjected to external force, the gland moves towards the interior of the sliding groove, at the moment, the spring can press the third expansion strip, and at the moment, if the third expansion strip swells when encountering water, the third expansion strip can be tightly attached to the edge of the outer wall of the connecting position of the first connecting end and the second connecting end, and the edge of the outer wall of the connecting position of the first connecting end and the second connecting end is sealed.

Description

Technical Field

[0001] The invention belongs to the technical field of jack pipe sealing, and in particular relates to a jack pipe sealing structure. Background Art

[0002] Pipe jacking is a pipeline burial construction technique that requires minimal or no excavation. It can cross roads, railways, rivers, ground, buildings, underground structures, and various underground pipelines, and is increasingly being used in trenchless pipeline projects. Generally, during pipe jacking, the machine head is lowered onto the guide rails within the well, adjusted in direction, and the jacking force generated by the jacking equipment within the working well overcomes the friction between the pipe and the surrounding soil. The pipe is then pushed along the opening into the reserved hole according to the designed slope and buried between the two pits. After one section of pipe is pushed into the soil, the second section is lowered and pushed forward, and the soil is removed to complete the pipeline laying.

[0003] In actual work, an annular gap is often formed between the jacking pipe and the soil during the laying process. If it is not handled properly, it may cause problems such as ground settlement and deformation of the construction pipeline, which will seriously affect the quality of the project. Therefore, the present invention proposes a jacking pipe sealing structure to solve the above problems. Summary of the Invention

[0004] The present invention provides a top pipe sealing structure, aiming to solve the problems raised in the background technology.

[0005] The present invention is achieved as follows: a jacking pipe sealing structure includes a jacking pipe body;

[0006] The two ends of the jacking pipe body are respectively provided with a first connecting end and a second connecting end;

[0007] The first connecting end includes a first connecting vertical surface and a first connecting inclined surface, a first expansion groove is formed on the first connecting vertical surface, and a plurality of first expansion strips are formed on the first connecting inclined surface. The second connecting end includes a second connecting vertical surface and a second connecting inclined surface, a second expansion strip is formed on the second connecting vertical surface, and a plurality of second expansion grooves are formed on the second connecting inclined surface, the second expansion strips match the first expansion grooves, the first expansion strips correspond to the second expansion grooves one-to-one, and the first expansion strips match the second expansion grooves.

[0008] A third expansion strip is provided on the outer wall of the connection between the first connecting end and the second connecting end, a pressure cover is provided on the outside of the third expansion strip, the third expansion strip and the pressure cover are connected by a spring, and a sliding groove is provided on both the first connecting end and the second connecting end, and the pressure cover is slidably connected to the sliding groove.

[0009] Preferably, the angles between the first connecting inclined plane and the second connecting inclined plane and the horizontal plane are both less than 5°.

[0010] Preferably, two supporting strips that are distributed opposite to each other are provided inside the second expansion strip and the third expansion strip.

[0011] Preferably, a plurality of the first expansion strips are distributed at intervals along the extension direction of the first connecting inclined surface.

[0012] Preferably, a plurality of the second expansion grooves are distributed at intervals along the extension direction of the second connecting inclined surface.

[0013] Preferably, the first connecting vertical surface is connected to the second connecting vertical surface, and the first connecting inclined surface is connected to the second connecting inclined surface.

[0014] Preferably, wooden plugs are provided inside the first expansion tank and the second expansion tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Because the angles between the first and second connecting bevels and the horizontal plane are both less than 5°, forming a slope, the angles between the multiple first expansion strips and the horizontal plane are all less than 5°, forming a slope. When the first connecting bevel is connected to the second connecting bevel, the portion of the first expansion strip located outside the first connecting bevel will be accommodated within the second expansion groove. Moreover, the tighter the first connecting end and the second connecting end are plugged in, the smaller the gap between the first expansion strip and the second connecting bevel. When the first expansion strip expands in water, the connection between the first and second connecting bevels is sealed.

[0017] 2. When the first connection end and the second connection end are plugged in, the portion of the second expansion strip outside the second connection vertical surface will be accommodated in the first expansion groove. When the second expansion strip is exposed to water, it will expand in the first expansion groove, thereby achieving a tight seal at the connection between the first and second connection vertical surfaces.

[0018] 3. Two support bars are arranged opposite to each other inside the second expansion strip. When the first connection end and the second connection end are connected, one of the support bars is located inside the first expansion groove. At this time, the two support bars are respectively located on both sides of the connection between the first connection vertical surface and the second connection vertical surface. The support bars have a supporting and stabilizing function, and prevent the second expansion strip from tearing due to expansion at the connection between the first connection vertical surface and the second connection vertical surface.

[0019] 4. A third expansion strip is provided on the outer wall of the connection between the first connection end and the second connection end, wherein a pressure cover is provided on the outside of the third expansion strip, and the pressure cover is slidably connected to the sliding groove. The third expansion strip and the pressure cover are connected by a spring. When the pressure cover is subjected to external force, the pressure cover moves toward the inside of the sliding groove. At this time, the spring will press toward the third expansion strip. At this time, if the third expansion strip expands when exposed to water, it will cling to the outer wall edge of the connection between the first connection end and the second connection end, thereby sealing the outer wall edge of the connection between the first connection end and the second connection end. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic structural diagram of the jacking pipe body and the first connecting end in the present invention;

[0022] Figure 3 This is a schematic structural diagram of the jacking pipe body and the second connecting end in the present invention;

[0023] Figure 4 for Figure 1 A partial enlarged view of the middle part;

[0024] Figure 5 for Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 6 for Figure 3 A partial enlarged view of point C in the middle;

[0026] Figure 7 for Figure 3 A partial enlarged view of point D in the middle.

[0027] In the picture:

[0028] 1. Jacking pipe body; 2. First connecting end; 3. Second connecting end; 4. First connecting vertical surface; 5. First expansion groove; 6. First connecting inclined surface; 7. First expansion strip; 8. Second connecting inclined surface; 9. Second expansion groove; 10. Second connecting vertical surface; 11. Second expansion strip; 12. Support strip; 13. Sliding groove; 14. Pressure cover; 15. Spring; 16. Third expansion strip. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0031] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] See also Figures 1 to 7 The present invention provides a technical solution: a top pipe sealing structure, comprising a top pipe body 1; a first connecting end 2 and a second connecting end 3 are respectively provided at both ends of the top pipe body 1; the first connecting end 2 comprises a first connecting vertical surface 4 and a first connecting inclined surface 6, the first connecting vertical surface 4 is provided with a first expansion groove 5, the first connecting inclined surface 6 is provided with a plurality of first expansion strips 7, the second connecting end 3 comprises a second connecting vertical surface 10 and a second connecting inclined surface 8, the second connecting vertical surface 10 is provided with a second expansion strip 11, the second connecting inclined surface 8 is provided with a plurality of second expansion grooves 9, the second expansion strips 11 match the first expansion grooves 5, the first expansion strips 7 correspond to the second expansion grooves 9 one by one, and the first expansion strips 7 match the second expansion grooves 9; a third expansion strip 16 is provided on the outer wall of the connection between the first connecting end 2 and the second connecting end 3, a pressure cover 14 is provided on the outside of the third expansion strip 16, the third expansion strip 16 and the pressure cover 14 are connected by a spring 15, and a sliding groove 13 is provided on both the first connecting end 2 and the second connecting end 3, and the pressure cover 14 is slidably connected to the sliding groove 13.

[0035] In this embodiment, during construction, the first connection end 2 in one jacking pipe body 1 is plugged into the second connection end 3 in another jacking pipe body 1, wherein a portion of the first expansion strip 7 is embedded in the first connection bevel 6, and the other portion is located outside the first connection bevel 6, and a portion of the second expansion strip 11 is embedded in the second connection vertical surface 10, and the other portion is located outside the second connection vertical surface 10; when the first connection end 2 and the second connection end 3 are plugged in, the first connection vertical surface 4 is connected to the second connection vertical surface 10, the first connection bevel 6 is connected to the second connection bevel 8, and since the angles between the first connection bevel 6 and the second connection bevel 8 and the horizontal plane are less than 5 degrees and form a slope, the angles between the multiple first expansion strips 7 and the horizontal plane are less than 5° forms a slope. When the first connecting bevel 6 is connected to the second connecting bevel 8, the portion of the first expansion strip 7 located outside the first connecting bevel 6 will be accommodated in the second expansion groove 9. Moreover, the tighter the first connecting end 2 and the second connecting end 3 are plugged in, the smaller the gap between the first expansion strip 7 and the second connecting bevel 8 will be. When the first expansion strip 7 expands in contact with water, the sealing at the connection between the first connecting bevel 6 and the second connecting bevel 8 is achieved. When the first connecting end 2 and the second connecting end 3 are plugged in, the portion of the second expansion strip 11 located outside the second connecting vertical surface 10 will be accommodated in the first expansion groove 5. When the second expansion strip 11 expands in contact with water, it will expand in the first expansion groove 5, thereby achieving the sealing at the connection between the first connecting vertical surface 4 and the second connecting vertical surface 10.

[0036] Since two relatively distributed support bars 12 are provided inside the second expansion bar 11, when the first connection end 2 and the second connection end 3 are connected, one of the support bars 12 is located inside the first expansion groove 5. At this time, the two support bars 12 are respectively located on both sides of the connection between the first connection vertical surface 4 and the second connection vertical surface 10. The support bars 12 have a supporting and stabilizing effect, thereby preventing the second expansion bar 11 from expanding and tearing at the connection between the first connection vertical surface 4 and the second connection vertical surface 10; when the sealing performance of the second expansion bar 11 is poor, the multiple first expansion bars 7 can further play a sealing role; when the top pipe body 1 is subjected to external force, the first connection inclined surface 6 and the second connection inclined surface 8 will further reduce the connection gap between the first expansion bar 7 and the second connection inclined surface 8. When the first connection end 2 and the second connection end 3 are plugged more tightly, the connection gap between the first expansion bar 7 and the second connection inclined surface 8 will also be further reduced, both of which can play a role in increasing the sealing effect. Since the first connection inclined surface 6 and the second connection inclined surface 8 are inclined surfaces, the first expansion bar 7 is accommodated in the second expansion groove 9 after expansion, and can also reduce the expansion and tearing of the first expansion bar 7 at the connection;

[0037] A third expansion strip 16 is provided on the outer wall of the connection between the first connection end 2 and the second connection end 3, wherein a pressure cover 14 is provided on the outside of the third expansion strip 16, and the pressure cover 14 is slidably connected to the sliding groove 13. The third expansion strip 16 and the pressure cover 14 are connected by a spring 15. When the pressure cover 14 is subjected to external force, the pressure cover 14 moves toward the inside of the sliding groove 13. At this time, the spring 15 will press toward the third expansion strip 16. At this time, if the third expansion strip 16 expands when exposed to water, it will be close to the outer wall edge of the connection between the first connection end 2 and the second connection end 3, thereby sealing the outer wall edge of the connection between the first connection end 2 and the second connection end 3.

[0038] For further information, see Figure 1 The included angles between the first connecting bevel 6 and the second connecting bevel 8 and the horizontal plane are both less than 5°.

[0039] In this embodiment, the angles between the first connecting bevel 6 and the second connecting bevel 8 and the horizontal plane are both less than 5°. When the top tube body 1 is subjected to external force, the connection gap between the first expansion strip 7 and the second connecting bevel 8 will be further reduced due to the action of the first connecting bevel 6 and the second connecting bevel 8. When the first connecting end 2 and the second connecting end 3 are plugged more tightly, the connection gap between the first expansion strip 7 and the second connecting bevel 8 will also be further reduced, both of which can play a role in increasing the sealing performance. Since the first connecting bevel 6 and the second connecting bevel 8 are bevels, the first expansion strip 7 is accommodated in the second expansion groove 9 after expansion, and the expansion and tearing of the first expansion strip 7 at the connection point can also be reduced.

[0040] For further information, see Figure 4 Two supporting bars 12 are arranged opposite to each other inside the second expansion bar 11 and the third expansion bar 16 .

[0041] In this embodiment, two relatively distributed support strips 12 are provided inside the second expansion strip 11. When the first connection end 2 and the second connection end 3 are connected, one of the support strips 12 is located inside the first expansion groove 5. At this time, the two support strips 12 are respectively located on both sides of the connection between the first connection vertical surface 4 and the second connection vertical surface 10. The support strips 12 have a supporting and stabilizing function, which prevents the second expansion strip 11 from expanding and tearing at the connection between the first connection vertical surface 4 and the second connection vertical surface 10; two relatively distributed support strips 12 are provided inside the third expansion strip 16, so that the third expansion strip 16 can expand inside the pressure cover 14 and can be pressed against the outer wall edge of the connection between the first connection end 2 and the second connection end 3, thereby increasing the sealing.

[0042] For further information, see Figure 5 , multiple first expansion strips 7 are distributed at intervals along the extending direction of the first connecting slope 6.

[0043] For further information, see Figure 6, multiple second expansion grooves 9 are distributed at intervals along the extension direction of the second connecting inclined surface 8.

[0044] In this embodiment, multiple first expansion strips 7 are distributed at intervals along the extension direction of the first connecting bevel 6. When the first connecting bevel 6 is connected to the second connecting bevel 8, the tighter the first connecting end 2 and the second connecting end 3 are plugged in, the smaller the gap between the first expansion strip 7 and the second connecting bevel 8. When the first expansion strip 7 expands when exposed to water, the sealing at the connection between the first connecting bevel 6 and the second connecting bevel 8 is achieved; multiple second expansion grooves 9 are distributed at intervals along the extension direction of the second connecting bevel 8. The second expansion grooves 9 correspond one-to-one to the first expansion strip 7. When the first expansion strip 7 expands when exposed to water, a part of it is accommodated inside the second expansion groove 9, which can reduce the expansion and tearing of the first expansion strip 7 at the connection.

[0045] For further information, see Figure 1 The first connecting vertical surface 4 is connected to the second connecting vertical surface 10 , and the first connecting inclined surface 6 is connected to the second connecting inclined surface 8 .

[0046] In this embodiment, when the first connection end 2 and the second connection end 3 are plugged in, the first connection vertical surface 4 is connected to the second connection vertical surface 10 , and the first connection inclined surface 6 is connected to the second connection inclined surface 8 .

[0047] Furthermore, wooden plugs are provided inside the first expansion tank 5 and the second expansion tank 9 .

[0048] In this embodiment, wooden plugs are provided inside the first expansion groove 5 and the second expansion groove 9. The function of the wooden plugs is to reduce the gap between the rubber strip and the expansion groove. After the rubber strip expands in water, it can fill the expansion groove and enhance the sealing performance.

[0049] The working principle and use process of the present invention are as follows: during construction, the first connection end 2 in one jacking pipe body 1 is plugged into the second connection end 3 in another jacking pipe body 1, wherein a portion of the first expansion strip 7 is embedded in the first connection bevel 6, and the other portion is located outside the first connection bevel 6, a portion of the second expansion strip 11 is embedded in the second connection vertical surface 10, and the other portion is located outside the second connection vertical surface 10; when the first connection end 2 and the second connection end 3 are plugged in, the first connection vertical surface 4 is connected to the second connection vertical surface 10, the first connection bevel 6 is connected to the second connection bevel 8, and since the angles between the first connection bevel 6 and the second connection bevel 8 and the horizontal plane are both less than 5° and form a slope, the angles between the multiple first expansion strips 7 and the horizontal plane are The first and second connection ends 2 and 3 are connected, and the gap between the first and second connection ends 2 and 3 is smaller. When the first and second connection ends 2 and 3 are plugged in, the gap between the first and second connection ends 7 and 8 is smaller. When the first expansion strip 7 expands in water, the connection between the first and second connection ends 6 and 8 is sealed. When the first and second connection ends 2 and 3 are plugged in, the second expansion strip 11 is located outside the second connection vertical surface 10. The portion of the second expansion strip 11 located outside the second connection vertical surface 10 is accommodated in the first expansion groove 5. When the second expansion strip 11 expands in water, it will expand in the first expansion groove 5, thereby achieving a seal at the connection between the first and second connection vertical surfaces 4 and 10.

[0050] Since two relatively distributed support bars 12 are provided inside the second expansion bar 11, when the first connection end 2 and the second connection end 3 are connected, one of the support bars 12 is located inside the first expansion groove 5. At this time, the two support bars 12 are respectively located on both sides of the connection between the first connection vertical surface 4 and the second connection vertical surface 10. The support bars 12 have a supporting and stabilizing effect, thereby preventing the second expansion bar 11 from expanding and tearing at the connection between the first connection vertical surface 4 and the second connection vertical surface 10; when the sealing performance of the second expansion bar 11 is poor, the multiple first expansion bars 7 can further play a sealing role; when the top pipe body 1 is subjected to external force, the first connection inclined surface 6 and the second connection inclined surface 8 will further reduce the connection gap between the first expansion bar 7 and the second connection inclined surface 8. When the first connection end 2 and the second connection end 3 are plugged more tightly, the connection gap between the first expansion bar 7 and the second connection inclined surface 8 will also be further reduced, both of which can play a role in increasing the sealing effect. Since the first connection inclined surface 6 and the second connection inclined surface 8 are inclined surfaces, the first expansion bar 7 is accommodated in the second expansion groove 9 after expansion, and can also reduce the expansion and tearing of the first expansion bar 7 at the connection;

[0051] A third expansion strip 16 is provided on the outer wall of the connection between the first connection end 2 and the second connection end 3, wherein a pressure cover 14 is provided on the outside of the third expansion strip 16, and the pressure cover 14 is slidably connected to the sliding groove 13. The third expansion strip 16 and the pressure cover 14 are connected by a spring 15. When the pressure cover 14 is subjected to external force, the pressure cover 14 moves toward the inside of the sliding groove 13. At this time, the spring 15 will press toward the third expansion strip 16. At this time, if the third expansion strip 16 expands when exposed to water, it will be close to the outer wall edge of the connection between the first connection end 2 and the second connection end 3, thereby sealing the outer wall edge of the connection between the first connection end 2 and the second connection end 3.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipe jacking sealing structure, characterized in that: It comprises a jacking pipe body (1); The two ends of the jacking pipe body (1) are respectively provided with a first connecting end (2) and a second connecting end (3); The first connecting end (2) includes a first connecting vertical surface (4) and a first connecting inclined surface (6), a first expansion groove (5) is provided on the first connecting vertical surface (4), and a plurality of first expansion strips (7) are provided on the first connecting inclined surface (6), the second connecting end (3) includes a second connecting vertical surface (10) and a second connecting inclined surface (8), a second expansion strip (11) is provided on the second connecting vertical surface (10), and a plurality of second expansion grooves (9) are provided on the second connecting inclined surface (8), the second expansion strips (11) match the first expansion grooves (5), the first expansion strips (7) correspond to the second expansion grooves (9) in a one-to-one manner, and the first expansion strips (7) match the second expansion grooves (9); A third expansion strip (16) is provided on the outer wall of the connection point between the first connection end (2) and the second connection end (3), a pressure cover (14) is provided on the outside of the third expansion strip (16), and the third expansion strip (16) and the pressure cover (14) are connected by a spring (15). A sliding groove (13) is provided on both the first connection end (2) and the second connection end (3), and the pressure cover (14) is slidably connected to the sliding groove (13).

2. The top pipe sealing structure according to claim 1, characterized in that: The included angles between the first connecting bevel (6) and the second connecting bevel (8) and the horizontal plane are both less than 5°.

3. The top pipe sealing structure according to claim 1, characterized in that: Two supporting strips (12) arranged opposite to each other are provided inside the second expansion strip (11) and the third expansion strip (16).

4. The top pipe sealing structure according to claim 3, characterized in that: A plurality of the first expansion strips (7) are distributed at intervals along the extension direction of the first connecting inclined surface (6).

5. The top pipe sealing structure according to claim 1, characterized in that: A plurality of the second expansion grooves (9) are distributed at intervals along the extension direction of the second connecting inclined surface (8).

6. The top pipe sealing structure according to claim 1, characterized in that: The first connecting vertical surface (4) is connected to the second connecting vertical surface (10), and the first connecting inclined surface (6) is connected to the second connecting inclined surface (8).

7. The top pipe sealing structure according to claim 1, characterized in that: Wooden plugs are provided inside the first expansion tank (5) and the second expansion tank (9).

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