Curved pipe section

Abstract

The present application relates to pipeline construction technology field, provide a kind of curved pipe jacking pipe section, including pipe section body, wooden backing plate and pressure box;One end of pipe section body forms pipe section interface, and the end surface of pipe section interface is provided with first recess;Setting in the end surface of pipe section interface, wooden backing plate is provided with second recess, and second recess is through wooden backing plate and is communicated with first recess;Pressure box is located in first recess and second recess, and one end of pressure box is in contact with the groove bottom of first recess, and the other end is flush with the one end of wooden backing plate away from pipe section body.The curved pipe jacking pipe section provided by the present application, wooden backing plate, when butting with adjacent curved pipe jacking pipe section, can be deformed, avoid direct extrusion between pipe section body, pressure box can monitor the stress change state of the position in curved pipe jacking process when wooden backing plate is deformed in real time, to facilitate early pre-control, avoid pipe section interface damage, and have the advantages such as simple structure, reasonable in design and easy to install, monitoring effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline construction, and in particular to a curved pipe jacking pipe joint. BACKGROUND

[0002] Pipe jacking is a common method for laying underground pipes in cities, and has the advantages of fast construction speed, no impact on traffic, and little impact on the surrounding environment, and has been widely used in the fields of water supply and drainage engineering, communication engineering, oil and gas engineering, etc.

[0003] When constructing a curved pipe jacking pipe joint in a curved segment turning path, the gap between adjacent two pipe joints and the allowable turning angle need to be controlled. Specifically, the non-uniform contact between the pipe joints of adjacent pipe joints in the curved segment, and the stress on the pipe joint interface needs to be controlled within a certain range to avoid excessive concentrated stress on the end face of the pipe joint interface due to excessive turning angle, thereby avoiding damage to the pipe joint interface during curved jacking.

[0004] The prior art cannot accurately control the stress of the curved pipe jacking pipe joint interface, and it is difficult to avoid damage to the pipe joint interface during curved jacking. SUMMARY

[0005] The present application provides a curved pipe jacking pipe joint to solve the problem that the prior art cannot accurately control the stress of the curved pipe jacking pipe joint interface, and it is difficult to avoid damage to the pipe joint interface during curved jacking.

[0006] The present application provides a curved pipe jacking pipe joint, comprising:

[0007] A pipe joint body, one end of the pipe joint body forms a pipe joint interface, and the end face of the pipe joint interface is provided with a first groove;

[0008] A wooden backing plate is arranged on the end face of the pipe joint interface, the wooden backing plate is provided with a second groove, the second groove penetrates through the wooden backing plate and communicates with the first groove;

[0009] A pressure box is located in the first groove and the second groove, one end of the pressure box is in contact with the groove bottom of the first groove, and the other end is flush with one end of the wooden backing plate away from the pipe joint body.

[0010] According to the present application, a curved pipe jacking pipe joint is provided, further comprising:

[0011] A containing box is pre-buried in the pipe joint body, and the inner side of the containing box forms the first groove.

[0012] According to the curved pipe jacking pipe joint provided by the application, the first groove and the second groove are respectively provided with a lateral opening, the lateral opening is located on a side of the first groove and the second groove close to the pipe joint body and the wooden pad close to the center, the rubber tube of the pressure box is arranged in the lateral opening, the reading instrument of the pressure box is located outside the first groove and the second groove and inside the pipe joint body.

[0013] According to the curved pipe jacking pipe joint provided by the application, the width of the lateral opening is not less than the width of the pressure box.

[0014] According to the curved pipe jacking pipe joint provided by the application, a pair of anti-disengagement plates are arranged in the first groove, a pipe passing opening is formed between the pair of anti-disengagement plates, the pressure box is located on a side of the pair of anti-disengagement plates away from the axis of the pipe joint body, the rubber tube of the pressure box is arranged in the pipe passing opening, and the anti-disengagement plates are used for preventing the pressure box from disengaging from the first groove and the second groove.

[0015] According to the curved pipe jacking pipe joint provided by the application, the anti-disengagement plate is an elastic plate.

[0016] According to the curved pipe jacking pipe joint provided by the application, a hidden groove is arranged on the side wall of the first groove, one end of the anti-disengagement plate is hinged in the hidden groove, the groove bottom of the hidden groove is connected with a supporting spring, and one end of the supporting spring away from the groove bottom of the hidden groove is connected with the anti-disengagement plate.

[0017] According to the curved pipe jacking pipe joint provided by the application, the accommodating box is welded and fixed with the built-in steel bars of the pipe joint interface.

[0018] According to the curved pipe jacking pipe joint provided by the application, the first groove, the second groove and the pressure box are uniformly arranged in multiple numbers around the axis of the pipe joint body.

[0019] According to the curved pipe jacking pipe joint provided by the application, one end of the pipe joint body away from the pipe joint interface is provided with a butt joint sleeve, and the butt joint sleeve is suitable for plug-in cooperation with the pipe joint interface of the adjacent pipe joint body.

[0020] The curved pipe jacking pipe joint provided by the application is characterized in that the pipe joint interface end surface of the pipe joint body is provided with a wooden pad, the wooden pad can be deformed when the pipe joint body is butted with the adjacent curved pipe jacking pipe joint, direct extrusion between the pipe joint bodies is avoided, the pressure box located in the first groove and the second groove can monitor the stress change state of the position in the curved pipe jacking process in real time when the wooden pad is deformed, so that early pre-control is facilitated, the pipe joint interface is prevented from being damaged, and the curved pipe jacking pipe joint has the advantages of simple structure, reasonable design, convenient installation, good monitoring effect and the like. BRIEF DESCRIPTION OF DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the end face structure at one end of the pipe section interface in a curved pipe jacking section provided by the present invention;

[0023] Figure 2 It is a manifestation Figure 1 Schematic diagram of section AA;

[0024] Figure 3 This is a schematic diagram illustrating the docking structure of adjacent curved pipe jacking sections in a curved pipe jacking section provided by the present invention;

[0025] Figure 4 This is one of the schematic diagrams illustrating the anti-detachment plate structure in a curved jacking pipe section provided by the present invention;

[0026] Figure 5 This is the second schematic diagram illustrating the anti-detachment plate structure in a curved jacking pipe section provided by the present invention;

[0027] Reference numerals: 100, pipe section body; 110, receiving box; 111, anti-detachment plate; 112, concealed groove; 113, support spring; 120, first groove; 130, sealing groove; 140, grouting hole; 200, wooden pad; 210, second groove; 300, pressure box; 310, hose; 320, reading instrument; 400, docking sleeve; 500, reinforcing sleeve. Detailed Implementation

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "connected", "connected to", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] In the embodiments of the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0033] The following will be described in combination with Figures 1 to 5 The curve pipe section of the embodiment of the present application is described, which comprises a pipe section body 100, a wooden backing plate 200 and a pressure box 300; one end of the pipe section body 100 forms a pipe section interface, and the end face of the pipe section interface is provided with a first groove 120; the wooden backing plate 200 is arranged on the end face of the pipe section interface, and the wooden backing plate 200 is provided with a second groove 210, which penetrates through the wooden backing plate 200 and communicates with the first groove 120; the pressure box 300 is located in the first groove 120 and the second groove 210, one end of the pressure box 300 is in contact with the groove bottom of the first groove 120, and the other end is flush with the end of the wooden backing plate 200 away from the pipe section body 100.

[0034] In the above scheme, the pipe joint interface of the pipe joint body 100 is adapted to be connected with the tail end of other curved pipe jonts, and during pipe jacking, the wooden cushion plate 200 can provide a certain deformation allowance, and the extrusion force can be detected through the pressure box 300.

[0035] As shown in Figure 1 and Figure 2 In some embodiments of the present application, the curved pipe joint further comprises a containing box 110, which is embedded in the pipe joint body 100, and the inner side of the containing box 110 forms a first groove 120. In the embodiments of the present application, the containing box 110 can reserve the first groove 120 in advance when pouring the pipe joint body 100, and there is no need to cut after pouring is completed.

[0036] Optionally, the containing box 110 is formed by an 8mm thick steel plate, and the inner diameter of the position for installing the pressure box 300 is 150mm.

[0037] Optionally, the depth of the first groove 120 of the containing box 110 is 65mm.

[0038] Optionally, the containing box 110 is welded and fixed with the built-in steel bars of the pipe joint interface, so as to ensure the angle and position of the containing box 110, increase the firmness of the containing box 110, and facilitate the pouring of the pipe joint body 100.

[0039] In some embodiments of the present application, the first groove 120 and the second groove 210 are respectively provided with a lateral opening, which is located on the side close to the center of the pipe joint body 100 and the wooden cushion plate 200, the rubber tube 310 of the pressure box 300 is arranged in the lateral opening, and the reading instrument 320 of the pressure box 300 is located outside the first groove 120 and the second groove 210 and on the inner side of the pipe joint body 100. The lateral opening can facilitate the arrangement of the rubber tube 310 of the pressure box 300, and avoid the influence of extrusion on detection.

[0040] Optionally, the width of the lateral opening is not less than the width of the pressure box 300, so that the pressure box 300 can be put into the first groove 120 and the second groove 210 through the lateral opening, and the pressure box 300 can also be taken out of the first groove 120 and the second groove 210 through the lateral opening. It should be noted that due to the angle formed by the axes between the two adjacent pipe joints within the turning radius of the curved section, there may be no extrusion or slight extrusion in some positions. In the above two cases, the pressure box 300 at the corresponding position can be taken out of the first groove 120 and the second groove 210 after the pipe jacking operation is completed, and can be reused, which is beneficial to reduce the use cost.

[0041] In some embodiments of the present application, the first grooves 120, the second grooves 210 and the pressure boxes 300 are evenly arranged around the axis of the pipe section body 100. For example, as shown in the drawings, three first grooves 120, three second grooves 210 and three pressure boxes 300 are arranged respectively, and the included angle between adjacent first grooves 120, the included angle between adjacent second grooves 210 and the included angle between adjacent pressure boxes 300 are 120° respectively. In this way, the extrusion force can be detected at three positions in the circumferential direction, the monitoring effect is better, and it is easier to analyze the stress at different positions. In particular, for the stress between two adjacent pipe sections in the curve section, the position of stress concentration and the size of the stress can be determined.

[0042] In combination Figure 4 and Figure 5 In some embodiments of the present application, a pair of anti-disengagement plates 111 is arranged in the first groove 120. The pair of anti-disengagement plates 111 are fixed on the two opposite side walls of the first groove 120 respectively, the length of the anti-disengagement plate 111 is less than the width of the first groove 120, so that a pipe passing opening is formed between the pair of anti-disengagement plates 111. The pressure box 300 is located on the side of the pair of anti-disengagement plates 111 away from the axis of the pipe section body 100, and the rubber tube 310 of the pressure box 300 passes through the pipe passing opening. The anti-disengagement plate 111 is used to prevent the pressure box 300 from disengaging from the first groove 120 and the second groove 210. When the size of the first groove 120 and the second groove 210 is greater than the size of the pressure box 300, the pressure box 300 will not disengage from the first groove 120 and the second groove 210 under the action of the anti-disengagement plate 111. For example, as shown in the structure shown in Figure 4 and Figure 5 When the lateral opening of the first groove 120 and the second groove 210 is downward, the pressure box 300 has the risk of falling under the action of gravity when the extrusion does not occur between the curve pipe section pipe sections. This situation can be avoided by arranging the anti-disengagement plate 111.

[0043] As Figure 4 shown, in an optional solution, the anti-disengagement plate 111 is an elastic plate, for example, the anti-disengagement plate 111 is an elastic steel sheet, and one end of the anti-disengagement plate 111 is welded and fixed with the inner wall of the first groove 120. In this solution, the size of the pipe passing opening can be changed by making the anti-disengagement plate 111 elastically deform, so that the pressure box 300 can be installed into the first groove 120 and the second groove 210 through the lateral opening, or the pressure box 300 can be taken out from the first groove 120 and the second groove 210 through the lateral opening.

[0044] As Figure 5As shown, in another alternative, the side wall of the first groove 120 is provided with a hidden groove 112, the size of the hidden groove 112 is not less than the size of the anti-falling plate 111. One end of the anti-falling plate 111 is hinged in the hidden groove 112, and the hinged position is located at the end of the hidden groove 112 away from the axis of the pipe joint body 100, so that when the anti-falling plate 111 is rotated to be parallel to the axis of the pipe joint body 100, one side wall of the anti-falling plate 111 abuts against the side wall of the hidden groove 112 away from the axis of the pipe joint body 100. The bottom of the hidden groove 112 is connected with a supporting spring 113, one end of the supporting spring 113 away from the bottom of the hidden groove 112 is connected with the anti-falling plate 111, and under the support of the supporting spring 113, the anti-falling plate 111 can be maintained at the position parallel to the axis of the pipe joint body 100, at this time, the pressure box 300 can be prevented from falling off, when the pressure box 300 needs to be taken out, the pressure box 300 can be pulled outwards, so that the anti-falling plate 111 is compressed to rotate, and after the anti-falling plate 111 is rotated into the hidden groove 112, the pressure box 300 can be taken out.

[0045] See again Figure 3 In some embodiments of the present application, the end of the pipe joint body 100 away from the pipe joint interface is provided with a docking sleeve 400, the docking sleeve 400 is suitable for being inserted and matched with the pipe joint interface of the adjacent pipe joint body 100, so that the end-to-end connection between the adjacent pipe joint bodies 100 can be facilitated.

[0046] Optionally, the docking sleeve 400 is a sleeve structure made of steel material, which has good structural strength.

[0047] Optionally, a reinforcing sleeve 500 is arranged outside the pipe joint interface, the reinforcing sleeve 500 is a sleeve structure made of steel material, which can increase the structural strength of the pipe joint interface.

[0048] Optionally, the pipe joint interface is provided with a grouting hole 140, the grouting hole 140 radially penetrates through one side wall of the pipe joint interface.

[0049] Optionally, at least one sealing groove 130 is arranged outside the pipe joint interface, the sealing groove 130 is located on the side of the grouting hole 140 close to the wooden pad 200, and the sealing groove 130 is used for installing a sealing ring to prevent the grouting liquid flowing out of the grouting hole 140 from flowing into the curved pipe joint through the end of the pipe joint interface.

[0050] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A curved pipe jacking section, characterized in that, include: The pipe section body has a pipe section interface at one end, and a first groove is provided on the end face of the pipe section interface. A wooden pad is provided on the end face of the pipe section interface. The wooden pad has a second groove that penetrates the wooden pad and communicates with the first groove. The pressure box is located in the first groove and the second groove. One end of the pressure box is in contact with the bottom of the first groove, and the other end is flush with the end of the wooden pad that is away from the pipe section body.

2. The curved pipe jacking section according to claim 1, characterized in that, Also includes: A receiving box is pre-embedded in the pipe section body, and the first groove is formed on the inner side of the receiving box.

3. The curved pipe jacking section according to claim 1, characterized in that, The first groove and the second groove are respectively provided with lateral openings. The lateral openings are located on the side of the first groove and the second groove near the tube body and the wooden pad near the center. The rubber tube of the pressure box passes through the lateral opening. The reading instrument of the pressure box is located outside the first groove and the second groove and inside the tube body.

4. The curved pipe jacking section according to claim 3, characterized in that, The width of the lateral opening is not less than the width of the pressure box.

5. The curved pipe jacking section according to claim 1, characterized in that, A pair of anti-detachment plates are provided in the first groove, and a tube opening is formed between the pair of anti-detachment plates. The pressure box is located on the side of the pair of anti-detachment plates away from the axis of the tube body. The rubber tube of the pressure box passes through the tube opening. The anti-detachment plates are used to prevent the pressure box from detaching from the first groove and the second groove.

6. The curved pipe jacking section according to claim 5, characterized in that, The anti-detachment plate is an elastic plate.

7. The curved pipe jacking section according to claim 5, characterized in that, The first groove has a hidden groove on its side wall. One end of the anti-detachment plate is hinged in the hidden groove. A support spring is connected to the bottom of the hidden groove. The end of the support spring away from the bottom of the hidden groove is connected to the anti-detachment plate.

8. The curved pipe jacking section according to claim 2, characterized in that, The receiving box is welded and fixed to the built-in steel bars of the pipe section interface.

9. The curved pipe jacking section according to claim 1, characterized in that, The first groove, the second groove, and the pressure box are evenly arranged in multiple portions around the axis of the pipe section body.

10. The curved pipe jacking section according to any one of claims 1 to 9, characterized in that, A mating sleeve is provided at one end of the pipe section body away from the pipe section interface, and the mating sleeve is adapted to be inserted and mated with the pipe section interface of the adjacent pipe section body.

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