An initial sealing device suitable for adjusting the posture of a pipe segment and a construction method thereof

Abstract

The present application discloses an initial sealing device suitable for adjusting the posture of a segment and a construction method thereof. The initial sealing device includes a hole door frame and an initial sleeve. The hole door frame is fixedly arranged at the hole of the initial hole. The initial sleeve is fixedly arranged outside the initial hole. The initial sleeve is fixedly connected to the hole door frame. The negative ring segment is installed in the initial sleeve. An annular steel tail brush is provided at each end of the initial sleeve. The steel tail brush is provided between the initial sleeve and the negative ring segment. Multiple groups of adjustment components are installed between the initial sleeve and the negative ring segment. The adjustment components are provided between the two steel tail brushes. The multiple groups of adjustment components are distributed along the circumference of the initial sleeve. The adjustment components include a first airbag and a second airbag. The first airbag and the second airbag are arranged side by side along the axial direction of the initial sleeve. The first airbag and the second airbag are respectively connected to a filling valve. The present application has the effect of facilitating the adjustment of the posture of the negative ring segment.

Description

Technical Field

[0001] The present invention relates to the field of shield construction, and in particular to an initial sealing device suitable for adjusting the posture of a segment and a construction method thereof. Background Art

[0002] Currently, the most difficult stages to control in shield construction are the launch and reception stages. During the launch phase, the portal end is reinforced and the portal frame is installed. The launch sealing device, shield machine, negative ring segments, launch frame, and reaction frame are installed outside the portal. The portal is then removed, and the shield machine enters the reinforced area to advance. However, in actual application, the negative ring segments serve as a force transmission structure and also allow the passage of the subsequent supporting trailer. The shield machine's posture can easily affect the posture of the negative ring segments, and the shield machine cannot adjust its posture on the launch frame. If the shield machine's posture exceeds the limit, the negative ring segments will deviate. At this time, the negative ring segments cannot be adjusted, which will have an adverse effect on subsequent shield construction.

[0003] Regarding the above-mentioned related technologies, the applicant believes that the following defects exist: at the initial stage of shield construction, the posture of the negative ring segments cannot be adjusted. Summary of the Invention

[0004] In order to facilitate the posture adjustment of the negative ring segment, the present application provides an initial sealing device suitable for adjusting the posture of the segment and a construction method thereof.

[0005] In a first aspect, the present application provides an initial sealing device suitable for adjusting the posture of a segment, which adopts the following technical solution:

[0006] A starting sealing device suitable for adjusting the posture of a pipe segment comprises a starting sleeve, the starting sleeve is fixedly arranged in the starting working well and outside the starting tunnel, one end of the starting sleeve is fixedly connected to the tunnel door frame of the starting tunnel, the negative ring pipe segment is installed in the starting sleeve, the starting sleeve is provided with an annular steel tail brush, the steel tail brush is arranged between the starting sleeve and the negative ring pipe segment, one end of the steel tail brush is fixed to the starting sleeve, the other end of the steel tail brush abuts the outer wall of the negative ring pipe segment, the side wall of the starting sleeve is provided with a grouting hole, and the grouting hole is arranged between two of the steel tail brushes; multiple groups of adjustment components are installed between the starting sleeve and the negative ring pipe segment, and the multiple groups of adjustment components are distributed along the circumference of the starting sleeve; the adjustment component comprises a first airbag and a second airbag, the first airbag and the second airbag are both arranged along the axial direction of the starting sleeve, and the first airbag and the second airbag are respectively connected to a filling valve.

[0007] By adopting the above technical solution, after measuring the posture of the negative ring segment, if it is found that the deviation of the posture of the negative ring segment exceeds the allowable range, gas is filled into the first airbag at the corresponding position to make the first airbag expand, push the negative ring segment to move, and adjust the position of the negative ring segment. After the negative ring segment is adjusted to the correct position, the air pressure in the first airbag is maintained, and concrete is filled into the second airbag. After the concrete solidifies, the negative ring segment is firmly supported by the solidified concrete, and the position of the negative ring segment is fixed. The present application can conveniently adjust the position of the negative ring segment, and the adjusted negative ring segment can be firmly supported. The adjusted negative ring segment can also remain stable and not shake when the rear supporting trailer passes, thereby improving the excavation accuracy of the shield machine in the initial stage.

[0008] Preferably, the first airbag and the second airbag are respectively connected to the filling valve via a hose, and the hose is capable of expansion and contraction and bending.

[0009] By adopting the above technical solution, the positions of the first airbag and the second airbag can be adjusted when installing the first airbag and the second airbag through the hose connection, so that the installation positions of the first airbag and the second airbag can better meet the design requirements.

[0010] Preferably, the first airbag and the second airbag are fixedly connected to each other and mounted on the inner wall of the starting sleeve via magnets, and the magnets are arc-shaped and attached to the inner wall of the starting sleeve.

[0011] By adopting the above technical solution, the first airbag and the second airbag can be conveniently installed on the inner wall of the initial sleeve through magnets, and the positions of the first airbag and the second airbag can be adjusted as needed without drilling holes on the side wall of the initial sleeve.

[0012] Preferably, a magnetic seat is installed outside the starting sleeve, and the magnetic seat can generate magnetic attraction to the magnet and drive the magnet to move together.

[0013] By adopting the above technical solution, before the negative ring segment is adjusted, the magnetic seat can drive the magnet to move together, thereby adjusting the positions of the first airbag and the second airbag, making the adjustment of the first airbag and the second airbag more precise.

[0014] Preferably, the magnet is provided with a lubricious layer for reducing friction with the starting sleeve.

[0015] By adopting the above technical solution, since the magnet is adsorbed on the inner wall of the starting sleeve, in order to move the magnet, it is necessary to overcome the friction between the magnet and the starting sleeve. The smooth layer can reduce the friction coefficient between the magnet and the starting sleeve, thereby making it easier for the magnetic base to drive the magnet, the first airbag and the second airbag to move together.

[0016] Preferably, the magnetic base is connected to a moving component, and the moving component can drive the magnetic base to move. The moving component includes a moving frame and a moving rod. The moving frame is arranged outside the starting sleeve. The moving frame is provided with an arc-shaped slide rail, and the slide rail is sleeved outside the starting sleeve. A slider is slidably installed on the slide rail, and the two ends of the moving rod are respectively fixedly connected to the slider and the magnetic base.

[0017] By adopting the above technical solution, after the magnetic base generates magnetic force, it will attract each other with the starting sleeve. In the process of using the magnetic base to drive the magnet to move, it is necessary to overcome the magnetic attraction between the magnetic base and the starting sleeve to prevent the magnetic base from being adsorbed onto the starting sleeve. By setting up the movable frame and the movable rod, the magnetic base can be easily moved and can be prevented from being adsorbed onto the starting sleeve, which is convenient and labor-saving to use.

[0018] Preferably, a rack is installed on the slider, a driving frame is installed on the movable frame, a gear is rotatably installed on the driving frame, the gear is engaged with the rack, and the gear is connected to a handle.

[0019] By adopting the above technical solution and designing the distance between the handle and the axis of the gear, a smaller force can be used to drive the rack to move, thereby facilitating the movement of the magnetic base.

[0020] Preferably, the movable frame is provided with a guide rail, the axis of the guide rail is coaxial with the axis of the slide rail, the driving frame is connected to the guide rail and can move along the guide rail, and the driving frame is installed with a fastening bolt, which can press against and detach from the movable frame.

[0021] By adopting the above technical solution, the driving frame moves on the guide rail, and the magnetic base, connecting rod, slider, rack, gear and handle can be moved to the required position together, and multiple groups of adjustment components can share one magnetic base.

[0022] In a second aspect, the present application provides a construction method for an initial sealing device suitable for adjusting the posture of a segment, which adopts the following technical solution:

[0023] A construction method of an initial sealing device suitable for adjusting the posture of a pipe segment comprises the following steps:

[0024] Install the starting sleeve: install the starting sleeve outside the starting hole and fix it to the hole door frame, then install the first airbag and the second airbag to the corresponding positions of the starting sleeve;

[0025] Install the shield machine: Install the shield machine into the starting sleeve and set it outside the starting tunnel. Then install the negative ring segment behind the shield machine. The negative ring segment is installed in the starting sleeve, and then install the reaction frame behind the negative ring segment.

[0026] Adjust the posture of the negative ring segment: Measure the posture of the negative ring segment. If the posture deviation of the negative ring segment is greater than the allowable range, fill the first airbag with a first medium to correct the position of the negative ring segment to within the designed range. Then fill the second airbag with a second medium. The second medium solidifies into a solid within a certain period of time, fixing the position of the negative ring segment.

[0027] Grouting: Inject slurry between the starting sleeve and the negative ring segment through the grouting hole.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. After measuring the posture of the negative ring segment, if it is found that the deviation of the posture of the negative ring segment exceeds the allowable range, gas is filled into the first airbag at the corresponding position to expand the first airbag, push the negative ring segment to move, and adjust the position of the negative ring segment. After the negative ring segment is adjusted to the correct position, the air pressure in the first airbag is maintained, and concrete is filled into the second airbag. After the concrete solidifies, the negative ring segment is firmly supported by the solidified concrete, and the position of the negative ring segment is fixed. The present application can conveniently adjust the position of the negative ring segment, and the adjusted negative ring segment can be firmly supported. The adjusted negative ring segment can also remain stable and not shake when the rear supporting trailer passes by, thereby improving the tunneling accuracy of the shield machine at the initial stage.

[0030] 2. Magnets allow the first and second airbags to be easily mounted on the inner wall of the launch sleeve, and their positions can be adjusted as needed, ensuring more accurate installation without drilling holes in the sidewall of the launch sleeve. Before adjusting the negative ring segments, the magnetic base can drive the magnets to move together, thereby adjusting the positions of the first and second airbags, making adjustment of the first and second airbags more precise.

[0031] 3. Since the magnetic base generates magnetic force, it will attract the starting sleeve. In the process of using the magnetic base to drive the magnet to move, it is necessary to overcome the magnetic attraction between the magnetic base and the starting sleeve to prevent the magnetic base from being adsorbed on the starting sleeve. Through the setting of the movable frame and the movable rod, the magnetic base can be easily moved and can be prevented from being adsorbed on the starting sleeve, which is convenient and labor-saving to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of an initial sealing device suitable for adjusting the posture of a pipe segment in Example 1 of the present application.

[0033] Figure 2 It is a schematic structural diagram of the first airbag and the second airbag in the second embodiment of the present application.

[0034] Figure 3This is a structural schematic diagram of an initial sealing device suitable for adjusting the posture of a pipe segment in Example 2 of the present application.

[0035] Figure 4 This is a structural diagram of the mobile component of Example 2 of the present application (irrelevant parts omitted).

[0036] Figure 5 This is a flowchart of a construction method of an initial sealing device suitable for adjusting the posture of a pipe segment according to an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. Starting sleeve; 2. Portal door frame; 3. Negative ring segment; 4. Steel tail brush; 5. First airbag; 6. Second airbag; 7. Filling valve; 8. Hose; 9. Magnet; 10. Moving assembly; 101. Moving frame; 102. Moving rod; 103. Slider; 104. Rack; 105. Gear; 106. Drive frame; 107. Handle; 108. Fastening bolt; 109. Hinge shaft; 11. Magnetic seat. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-5 This application is described in further detail.

[0040] The embodiments of the present application disclose an initial sealing device suitable for adjusting the posture of a pipe segment and a construction method thereof.

[0041] Example 1

[0042] Reference Figure 1A starting sealing device suitable for adjusting the posture of a segment includes a starting sleeve 1, which is fixed in the starting working shaft and outside the starting tunnel through a support frame. One end of the starting sleeve 1 is fixedly connected to the tunnel door frame 2 of the starting tunnel, and the negative ring segment 3 is installed in the starting sleeve 1. The starting sleeve 1 includes an upper sleeve and a lower sleeve, which are connected by a flange and fixed by bolts and nuts. A rib plate arranged in the axial direction is welded to the outer periphery of the starting sleeve 1 to improve the strength of the starting sleeve 1. An annular steel tail brush 4 is provided at each end of the launch sleeve 1. The brush 4 encircles the inner wall of the launch sleeve 1 and is positioned between the launch sleeve 1 and the negative ring segment 3. One end of the brush 4 is fixed to the launch sleeve 1, while the other end abuts the outer wall of the negative ring segment 3. The brush 4 seals both ends of the space between the launch sleeve 1 and the negative ring segment 3. The brush 4 is tilted, with the end abutting the negative ring segment 3 located in front of the end of the brush 4 connected to the launch sleeve 1. Grouting holes are provided on the side wall of the launch sleeve 1. The grouting holes are located between the two brushes 4 and are used to inject slurry between the launch sleeve 1 and the negative ring segment 3. Five adjustment assemblies are installed between the two brushes 4 and avoid the grouting holes. The five groups of adjustment components are distributed along the circumference of the starting sleeve 1 and are respectively arranged at the twelve o'clock, four o'clock, five o'clock, seven o'clock and eight o'clock positions of the pipe cross section.

[0043] The adjusting assembly includes a first airbag 5 and a second airbag 6. One end of the first airbag 5 is fixedly connected to one end of the second airbag 6. The first airbag 5 and the second airbag 6 are arranged along the axial direction of the starting sleeve 1. The first airbag 5 and the second airbag 6 are respectively connected to a filling valve 7. The filling valve 7 passes through the starting sleeve 1 and is fixed to the starting sleeve 1 by a nut.

[0044] The implementation principle of a launch sealing device suitable for adjusting the posture of a pipe segment in an embodiment of the present application is as follows: after measuring the posture of the negative ring pipe segment 3, if it is found that the deviation of the posture of the negative ring pipe segment 3 exceeds the allowable range, high-pressure gas or high-pressure liquid is filled into the first airbag 5 on the side with the smaller gap between the negative ring pipe segment 3 and the launch sleeve 1, so that the first airbag 5 expands, pushes the negative ring pipe segment 3 to move, adjusts the position of the negative ring pipe segment 3, and prevents the posture of the negative ring pipe segment 3 from continuing to deteriorate, so that there is more time to fill the second airbag 6. After the position of the negative ring pipe segment 3 is adjusted to the correct position, the air pressure in the first airbag 5 is maintained unchanged, and a medium that can solidify, such as concrete or polyurethane, is filled into the second airbag 6. After the medium in the second airbag 6 solidifies, the negative ring pipe segment 3 is firmly supported and the position of the negative ring pipe segment 3 is fixed. In addition, after the medium such as concrete or polyurethane in the second airbag 6 solidifies, a medium that can solidify, such as concrete or polyurethane, can be filled into the first airbag 5 to improve the support stability of the negative ring pipe segment 3.

[0045] Example 2

[0046] Reference Figure 2 、 Figure 3 and Figure 4 , which differs from Example 1 in that the first airbag 5 and the second airbag 6 are each connected to the filling valve 7 via a hose 8. The hose 8 is a telescopic air tube that can be extended and bent. The end of the first airbag 5 away from the second airbag 6 is connected to the hose 8, and the end of the second airbag 6 away from the first airbag 5 is connected to the hose 8. This prevents the hose 8 from interfering with the installation and movement of the first airbag 5 and the second airbag 6, allowing the positions of the first airbag 5 and the second airbag 6 to be moved. The first airbag 5 and the second airbag 6 are fixedly connected to each other and mounted on the inner wall of the starting sleeve 1 via a magnet 9. The magnet 9 is arc-shaped, and the outer diameter of the magnet 9 is equal to the inner diameter of the starting sleeve 1. The outer surface of the magnet 9 is attached to the inner wall of the starting sleeve 1. The outer surface of the magnet 9 is provided with a smooth layer to reduce the friction between the magnet 9 and the starting sleeve 1. A magnetic base 11 is installed on the outside of the starting sleeve 1. The magnetic base 11 can generate magnetic attraction to the magnet 9, and the movement of the magnetic base 11 can drive the magnet 9 to move together.

[0047] The magnetic base 11 is connected to a moving assembly 10, which can drive the magnetic base 11 to move. The moving assembly 10 includes a moving frame 101 and a moving rod 102. The moving frame 101 is arranged outside the starting sleeve 1 and fixed in the starting working well. The moving frame 101 is provided with an arc-shaped slide rail, which is sleeved outside the starting sleeve 1 and coaxially arranged with the starting sleeve 1. A slider 103 is slidably mounted on the slide rail. The two ends of the moving rod 102 are fixedly connected to the slider 103 and the magnetic base 11 respectively. An arc-shaped rack 104 is installed on the slider 103, and the center line of the rack 104 coincides with the center line of the slide rail. The rack 104 is connected to a gear 105, and the gear 105 is engaged with the rack 104. The gear 105 is connected to a drive frame 106 through a hinge shaft 109. The drive frame 106 is installed on the moving frame 101. One end of the hinge shaft 109 is connected to a handle 107. By rotating the gear 105 by the handle 107, the rack 104 can be driven to slide, thereby driving the slider 103, the moving rod 102 and the magnetic base 11 to move. The movable frame 101 is provided with an arc-shaped guide rail, and the guide rail and the slide rail are respectively arranged on both sides of the movable frame 101, and the axis of the guide rail is coaxial with the axis of the slide rail. The driving frame 106 is slidably connected to the guide rail and can move along the guide rail. The driving frame 106 is installed with a fastening bolt 108, and the fastening bolt 108 can be pressed against and separated from the movable frame 101. When the fastening bolt 108 is pressed against the movable frame 101, the driving frame 106 and the movable frame 101 are fixed to each other. When the fastening bolt 108 is separated from the movable frame 101, the driving frame 106 and the movable frame 101 slide relative to each other. A synchronization bolt (not shown in the figure) is installed on the driving frame 106. The synchronization bolt can press against and disengage from the slider 103. When the synchronization bolt presses against the slider 103, the driving frame 106 and the slider 103 are fixedly connected, and the driving frame 106 and the slider 103 are moved together to the required position. When the synchronization bolt disengages from the slider 103, the driving frame 106 and the slider 103 are separated from each other, and the gear 105 can drive the slider 103 to move through the rack 104.

[0048] The implementation principle of the above embodiment is: through the cooperation of the magnetic base 11 and the magnet 9, the positions of the first airbag 5 and the second airbag 6 can be fine-tuned along the circumference of the starting sleeve 1, so that the airbag is in a position that is more conducive to adjusting the negative ring segment 3. Since the magnetic base 11 will attract each other with the starting sleeve 1 after generating magnetic force, in the process of using the magnetic base 11 to drive the magnet 9 to move, it is necessary to overcome the magnetic attraction between the magnetic base 11 and the starting sleeve 1 to prevent the magnetic base 11 from being adsorbed onto the starting sleeve 1. The moving rod 102 can keep the magnetic base 11 at a certain distance from the starting sleeve 1 to prevent the magnetic base 11 from being adsorbed onto the starting sleeve 1. By designing the distance between the handle 107 and the axis of the gear 105, a smaller force can be used to drive the rack 104 to move, which facilitates the movement of the magnetic base 11 and saves time and effort.

[0049] Reference Figure 5The present application also discloses a construction method of an initial sealing device suitable for adjusting the posture of a segment, comprising the following steps:

[0050] Install the starting sleeve 1: Install the starting sleeve 1 outside the starting hole and fix it to the hole door frame 2, then install the first airbag 5 and the second airbag 6 to the corresponding positions of the starting sleeve 1;

[0051] Install the shield machine: install the shield machine into the starting sleeve 1 and set it outside the starting tunnel, then install the negative ring segment 3 behind the shield machine, the negative ring segment 3 is installed in the starting sleeve 1, and then install the reaction frame behind the negative ring segment 3;

[0052] Adjust the posture of the negative ring segment 3: Measure the posture of the negative ring segment 3. If the posture deviation of the negative ring segment 3 is greater than the allowable range, fill the first airbag 5 with a first medium. The first medium is a medium that can be quickly filled, such as gas or liquid, to correct the position of the negative ring segment 3 to the designed range. Then, fill the second airbag 6 with a second medium. The second medium is an easily solidified material such as concrete or polyurethane. The second medium solidifies into a solid within a certain period of time, fixing the position of the negative ring segment 3.

[0053] Grouting: Inject slurry between the starting sleeve 1 and the negative ring segment 3 through the grouting hole.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An initial sealing device suitable for adjusting the posture of a segment, characterized by: The invention comprises a starting sleeve (1), wherein the starting sleeve (1) is fixedly arranged in the starting working well and arranged outside the starting hole, one end of the starting sleeve (1) is fixedly connected to the hole door frame (2) of the starting hole, a negative ring segment (3) is installed in the starting sleeve (1), and an annular steel tail brush (4) is provided on the starting sleeve (1), wherein the steel tail brush (4) is arranged between the starting sleeve (1) and the negative ring segment (3), one end of the steel tail brush (4) is fixed to the starting sleeve (1), and the other end of the steel tail brush (4) is fixed to the starting sleeve (1). One end abuts against the outer wall of the negative ring segment (3), and a grouting hole is provided on the side wall of the starting sleeve (1); multiple groups of adjustment components are installed between the starting sleeve (1) and the negative ring segment (3), and the multiple groups of adjustment components are distributed along the circumference of the starting sleeve (1); the adjustment components include a first airbag (5) and a second airbag (6), and the first airbag (5) and the second airbag (6) are both arranged along the axial direction of the starting sleeve (1), and the first airbag (5) and the second airbag (6) are respectively connected to a filling valve (7); The first airbag (5) and the second airbag (6) are respectively connected to the filling valve (7) via a hose (8), and the hose (8) is capable of expansion and contraction and bending; The first airbag (5) and the second airbag (6) are fixedly connected to each other and mounted on the inner wall of the starting sleeve (1) via a magnet (9); the magnet (9) is arc-shaped and attached to the inner wall of the starting sleeve (1); A magnetic seat (11) is installed outside the starting sleeve (1), and the magnetic seat (11) can generate a magnetic attraction force on the magnet (9) and drive the magnet (9) to move together; The magnetic base (11) is connected to a moving assembly (10), and the moving assembly (10) can drive the magnetic base (11) to move. The moving assembly (10) includes a moving frame (101) and a moving rod (102). The moving frame (101) is arranged outside the starting sleeve (1). An arc-shaped slide rail is provided on the moving frame (101), and the slide rail is sleeved outside the starting sleeve (1). A slider (103) is slidably installed on the slide rail. The two ends of the moving rod (102) are respectively fixedly connected to the slider (103) and the magnetic base (11).

2. The initial sealing device for adjusting the posture of a segment according to claim 1, characterized in that: The magnet (9) is provided with a lubricious layer for reducing friction with the starting sleeve (1).

3. The initial sealing device for adjusting the posture of a segment according to claim 1, characterized in that: A rack (104) is installed on the slider (103), a driving frame (106) is installed on the moving frame (101), and a gear (105) is rotatably installed on the driving frame (106), the gear (105) is engaged with the rack (104), and the gear (105) is connected to a handle (107).

4. The initial sealing device for adjusting the posture of a segment according to claim 3, characterized in that: The movable frame (101) is provided with an arc-shaped guide rail, the axis of the guide rail is coaxial with the axis of the slide rail, the driving frame (106) is connected to the guide rail and can move along the guide rail, and the driving frame (106) is installed with a fastening bolt (108), and the fastening bolt (108) can be tightened against and separated from the movable frame (101).

5. A construction method for an initial sealing device for adjusting the posture of a segment according to any one of claims 1 to 4, characterized in that: The steps include: Installing the starting sleeve (1): installing the starting sleeve (1) outside the starting hole and fixedly connecting it to the hole door frame (2), and then installing the first airbag (5) and the second airbag (6) to the corresponding positions of the starting sleeve (1); Installing the shield machine: installing the shield machine into the starting sleeve (1) and arranging it outside the starting hole, then installing the negative ring segment (3) at the rear of the shield machine, the negative ring segment (3) is installed in the starting sleeve (1), and then installing the reaction frame at the rear of the negative ring segment (3); Adjusting the posture of the negative ring segment (3): measuring the posture of the negative ring segment (3); if the posture deviation of the negative ring segment (3) is greater than the allowable range, filling the first medium into the first air bag (5) to correct the position of the negative ring segment (3) to within the designed range; then filling the second medium into the second air bag (6); the second medium solidifies into a solid within a certain period of time to fix the position of the negative ring segment (3); Grouting: injecting slurry between the starting sleeve (1) and the negative ring segment (3) through the grouting hole.

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