Expansion rubber strip structure for jacking pipe

Abstract

According to the expansion rubber strip structure used on the jacking pipe, a slope is formed between the first connecting inclined face and the horizontal plane and between the second connecting inclined face and the horizontal plane, after the jacking pipe is 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 second expansion strip can be inserted more tightly. The smaller the gap between the first expansion strip and the second connecting inclined surface is, the sealing performance of the joint of the first connecting inclined surface and the second connecting inclined surface is realized after the first expansion strip is expanded in water; the part, located outside the second connecting vertical face, of the second expansion strip can be contained in the first expansion groove, and the second expansion strip expands after meeting water to achieve the sealing performance of the connecting position of the first connecting vertical face and the second connecting vertical face. After the first connecting end and the second connecting end are connected, the two supporting strips are located on the two sides of the connecting position of the first connecting vertical face and the second connecting vertical face respectively, the supporting strips have the supporting and stabilizing effect, and the situation that the second expansion strip is expanded and torn at the connecting position of the first connecting vertical face and the second connecting vertical face is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe jacking strips, and in particular relates to an expansion strip structure used on a pipe jacking. Background Art

[0002] The expansion strips used for jacking pipes are generally water-expanding waterstop strips, which are a general term for putty-type waterstop strips and product-type waterstop strips with water-expanding properties. Water-expanding rubber putty has both the good adhesion and low-temperature performance of general putty and good expansion characteristics. It is mostly synthesized from a variety of polymer chemical materials and has higher strength than general putty. It is particularly suitable for waterproofing projects and can be produced according to the specifications and models required by users and designs.

[0003] When two jacking pipes are connected, the jacking pipes are subjected to external pressure, and the expansion strip located at the connection between the two jacking pipes will be compressed. When the expansion strip encounters water, the compressed part is easily torn by the expansion of the strip, resulting in poor sealing. When the two jacking pipes are connected, they are generally plugged in horizontally, so that the jacking pipes are under stress, causing the strip to bear greater pressure, which can easily lead to poor sealing over time. Therefore, the present invention proposes an expansion strip structure for jacking pipes to solve the above problems. Summary of the Invention

[0004] The present invention provides an expansion rubber strip structure for a jacking pipe, aiming to solve the problems raised in the background art.

[0005] The present invention is achieved as follows: an expansion rubber strip structure for a jacking pipe comprises 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, the first connecting vertical surface is provided with a first expansion groove, and the first connecting inclined surface is provided with a plurality of first expansion strips;

[0008] The second connecting end includes a second connecting vertical surface and a second connecting inclined surface, the second connecting vertical surface is provided with a second expansion strip, and the second connecting inclined surface is provided with a plurality of second expansion grooves;

[0009] The second expansion strip matches the first expansion slot, the first expansion strip corresponds to the second expansion slot one by one, and the first expansion strip matches the second expansion slot.

[0010] Preferably, the first connection end and the second connection end are plugged into each other.

[0011] 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.

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

[0013] Preferably, a plurality of the second expansion grooves are distributed at intervals along the extension direction of the second connecting inclined surface.

[0014] Preferably, two supporting strips that are distributed opposite to each other are provided inside the second expansion strip.

[0015] Preferably, when the first connection end and the second connection end are connected, one of the support bars is located inside the first expansion groove.

[0016] Preferably, the angles between the first connecting inclined plane and the second connecting inclined plane and the horizontal plane are both less than 5°.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Since 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 inside 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.

[0019] 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 sealing at the connection between the first connection vertical surface and the second connection vertical surface.

[0020] Two relatively distributed support strips are provided inside the second expansion strip. When the first connection end and the second connection end are connected, one of the support strips is located inside the first expansion groove. At this time, the two support strips are respectively located on both sides of the connection between the first connection vertical surface and the second connection vertical surface. The support strips have a supporting and stabilizing function, thereby preventing the second expansion strip from expanding and tearing at the connection between the first connection vertical surface and the second connection vertical surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic structural diagram of the jacking pipe body and the first connecting end in the present invention;

[0023] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0024] Figure 4 This is a schematic structural diagram of the jacking pipe body and the second connecting end in the present invention;

[0025] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0026] Figure 6 for Figure 4 A partial enlarged view of point C 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. 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 6 The present invention provides a technical solution: an expansion strip structure for a jacking pipe, comprising a jacking pipe body 1; a first connecting end 2 and a second connecting end 3 are respectively provided at both ends of the jacking 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, and 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, and the second connecting inclined surface 8 is provided with a plurality of second expansion grooves 9; the second expansion strip 11 matches the first expansion groove 5, the first expansion strip 7 corresponds to the second expansion groove 9 one-to-one, and the first expansion strip 7 matches the second expansion groove 9.

[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, which can also reduce the expansion and tearing of the first expansion bar 7 at the connection.

[0037] For further information, see Figure 1 , the first connection end 2 and the second connection end 3 are plugged in.

[0038] 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 to achieve the connection between the two jacking pipe bodies 1. Due to the effect of the propulsion force and the effect that the first connection bevel 6 and the second connection bevel 8 are beveled, the connection between the two jacking pipe bodies 1 will be better.

[0039] 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 .

[0040] 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 .

[0041] For further information, see Figure 3 , multiple first expansion strips 7 are distributed at intervals along the extending direction of the first connecting slope 6.

[0042] In this embodiment, multiple first expansion strips 7 are spaced apart 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 in water, the sealing of the connection between the first connecting bevel 6 and the second connecting bevel 8 is achieved.

[0043] For further information, see Figure 5 , 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 second expansion grooves 9 are spaced apart along the extension direction of the second connecting slope 8, and the second expansion grooves 9 correspond one-to-one to the first expansion strips 7. When the first expansion strip 7 expands when exposed to water, a portion 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 point.

[0045] For further information, see Figure 6 Two supporting bars 12 are arranged opposite to each other inside the second expansion bar 11 .

[0046] For further information, see Figure 1 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 .

[0047] In this embodiment, two relatively distributed support bars 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 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 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.

[0048] 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°.

[0049] 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.

[0050] 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 slopes are all less than 5°. 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, and 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 when exposed to 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 when exposed to 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.

[0051] 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. An expansion strip structure for a jacking pipe, characterized by: 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) comprises 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) comprises 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 strip (11) matches the first expansion slot (5), the first expansion strip (7) corresponds to the second expansion slot (9) one by one, and the first expansion strip (7) matches the second expansion slot (9).

2. The expansion strip structure for a jacking pipe according to claim 1, characterized in that: The first connection end (2) and the second connection end (3) are plugged into each other.

3. The expansion strip structure for a jacking pipe according to claim 2, 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).

4. The expansion strip structure for a jacking pipe according to claim 1, 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 expansion strip structure for a jacking pipe 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 expansion strip structure for a jacking pipe according to claim 1, characterized in that: Two supporting strips (12) arranged opposite to each other are provided inside the second expansion strip (11).

7. The expansion strip structure for a jacking pipe according to claim 6, characterized in that: When the first connecting end (2) and the second connecting end (3) are connected, one of the support bars (12) is located inside the first expansion slot (5).

8. The expansion strip structure for a jacking pipe 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°.

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