An emergency support device for shield tunnel

Abstract

The present invention relates to the technical field of emergency support for shield tunnels, and in particular to an emergency support device for shield tunnels. It comprises: a moving part, the moving part is slidably connected with symmetrically distributed telescopic frames, the moving part is provided with rectangularly distributed first sliding grooves, the telescopic frames slide in adjacent first sliding grooves, hydraulic telescopic rods, the number of which is consistent with the number of the telescopic frames and are arranged on adjacent telescopic frames, the telescopic ends of the hydraulic telescopic rods are fixedly connected to the telescopic parts of adjacent telescopic frames, and winding rollers, the number of which is consistent with the number of the telescopic frames and are rotatably connected to the telescopic parts of adjacent telescopic frames. The present invention draws on the principle of covering film in vegetable greenhouses, and lays the coiled material on the inner side of the annular steel bar support. This method can effectively support the inner side of the annular steel bar support, prevent the concrete poured in the support from leaking outward, and thus avoid pouring failure.

Description

Technical Field

[0001] The invention relates to the technical field of emergency support for shield tunnels, and in particular to an emergency support device for shield tunnels. Background Art

[0002] A shield tunnel is a tunnel that is excavated in the ground using a shield machine (also known as a shield tunneling machine), which is a type of dark excavation construction.

[0003] The shield machine can carry out underground excavation operations under various geological conditions. The specific process is as follows: 1. Soil excavation: Use a cutting device to excavate the soil in front of the excavation face; 2. Excavation and transportation: Use the excavation machinery to transport the excavated soil out of the cave; 3. Push the shield machine in: Rely on the jack to pressurize and push the shield machine in at the rear; 4. Support the surrounding rock: Use the shield shell to support the surrounding rock to prevent collapse in the tunnel; 5. Assemble the segments: Finally, assemble the precast concrete segments to form the tunnel structure.

[0004] During the shield tunnel construction process, after the precast concrete segments are assembled, a waterproof sheet is usually posted on their surface and a ring-shaped steel support is built. Then another waterproof sheet and baffle are posted on the inside of the ring-shaped steel support, and then a special concrete pouring machine is used for secondary pouring.

[0005] In order to ensure that the poured concrete ring segment does not deform or collapse before it is completely solidified, emergency support is required. The existing support method is mainly to support the concrete ring segment by building scaffolding in the tunnel.

[0006] However, this approach has the following problems:

[0007] The scaffolding needs to be rebuilt each time, which increases construction time and labor costs. In addition, when supporting the next concrete ring segment, the original scaffolding needs to be dismantled and rebuilt. The cumbersome construction process will also extend the construction time. Summary of the invention

[0008] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an emergency support device for a shield tunnel.

[0009] The technical implementation scheme of the present invention is: an emergency support device for a shield tunnel, comprising:

[0010] A moving member, wherein the moving member is slidably connected with symmetrically distributed telescopic frames, the moving member is provided with rectangularly distributed first sliding grooves, and the telescopic frames slide in adjacent first sliding grooves;

[0011] The hydraulic telescopic rods have the same number as the telescopic frames and are arranged on adjacent telescopic frames, and the telescopic ends of the hydraulic telescopic rods are fixedly connected to the telescopic parts of the adjacent telescopic frames;

[0012] The winding rollers are the same in number as the telescopic frames and are rotatably connected to the telescopic parts of the adjacent telescopic frames. An elastic member is provided between the winding roller and the adjacent telescopic frames, and a coil is wound around the winding roller.

[0013] A lifting assembly, disposed on the moving member, for raising the height of all the coils;

[0014] A driving assembly, disposed on the moving member, for driving all the telescopic frames to move;

[0015] A supporting assembly is arranged on the moving member and is used for supporting all the coils.

[0016] Preferably, the lifting assembly comprises: mirror-distributed driving members, all of which are arranged on the moving member; a moving platform, fixedly connected to the telescopic ends of the mirror-distributed driving members, and the moving platform is detachably connected to the facing sides of the two coils.

[0017] Preferably, the drive assembly comprises:

[0018] Fixed seats, at least four in number, all fixedly connected to the moving member and located below all the driving members;

[0019] The winches are the same in number as the fixing seats and are fixedly connected to adjacent fixing seats. The winches are used to drive the adjacent telescopic frames to move.

[0020] Preferably, the support assembly comprises:

[0021] The first sliding members are symmetrically and spaced apart, and are all slidably connected to the moving member;

[0022] The number of second sliding grooves is the same as that of the first sliding member, and both are arranged on the moving member, the first sliding member slides in adjacent second sliding grooves, the second sliding grooves arranged at intervals are all located between the driving members arranged in a mirror image, the lengths of the second sliding grooves arranged at intervals are all inconsistent, and the telescopic frame is fixedly connected to the first sliding member located in the longest second sliding groove;

[0023] Oil storage shells, the number of which is the same as that of the first sliding members, and are fixedly connected to adjacent first sliding members;

[0024] The sealing members are the same in number as the first sliding members and are slidably connected to the adjacent oil storage shells.

[0025] Preferably, a side of the sealing member away from the moving member is rotatably connected to a rotating member, and the rotating member is in contact and cooperation with the adjacent coil.

[0026] Preferably, the rotating member is elliptical, and a curved surface is provided on a side of the rotating member away from the adjacent sealing member.

[0027] Preferably, the support and blocking further comprises:

[0028] The second sliding members are the same in number as the first sliding members and are slidably connected to a side of the adjacent first sliding member facing away from the adjacent rotating member. The first sliding member is provided with an oil cavity, and the second sliding member slides in the oil cavity;

[0029] The number of the third sliding grooves is the same as that of the second sliding grooves, and the lengths of all the third sliding grooves are different. The third sliding grooves are composed of arc grooves and oblique grooves. The second sliding member slides in the adjacent third sliding grooves, and the oil chamber is connected to the adjacent oil storage shell.

[0030] The connecting component is arranged on the moving member and is used for connecting the first sliding members which are spaced apart on the same side.

[0031] Preferably, the diameter inside the oil storage housing is inconsistent with the diameter inside the oil chamber, so as to change the moving distance of adjacent sealing elements.

[0032] Preferably, the connection assembly comprises:

[0033] Fixed rings, the number of which is the same as that of the first sliding member, are all arranged on the moving member;

[0034] The symmetrical and spaced sliding blocks are all arranged on the moving part. The spaced sliding blocks are respectively slidably connected to the adjacent fixed rings. The sliding blocks are ball-connected with connecting rods. A connecting shell is slidably connected between two adjacent connecting rods. A spring is arranged between the connecting shell and the two adjacent connecting rods.

[0035] Preferably, it also includes:

[0036] A stress detection component is arranged on the mobile platform, and is used to detect the amount of concrete filling. The stress detection component includes:

[0037] An extrusion member is slidably connected to the moving platform, a cavity is provided on the upper side of the moving platform, and the extrusion member slides in the cavity;

[0038] The spring distance sensor is fixedly connected to the moving platform and is located in the cavity. The spring part of the spring distance sensor is fixedly connected to the extrusion member.

[0039] The beneficial effects of the present invention are as follows: the present invention draws on the principle of covering the top film in the vegetable greenhouse, and lays the coiled material on the inner side of the annular steel bar support. This method can effectively support the inner side of the annular steel bar support, prevent the concrete poured in the support from leaking outward, thereby avoiding pouring failure, and by using the coiled material for support, the time required for the support step of the annular steel bar support can be significantly shortened. After the laying is completed, the coiled material can be quickly rolled up, thereby speeding up the construction progress and reducing the floor space occupied by the construction site;

[0040] In the process of supporting the annular steel bar support, the present invention can monitor the pressure of the concrete in the annular steel bar support in real time by detecting the feedback strength of the waterproof cloth on the concrete pressure in the support. In this way, the staff can timely understand the filling status of the concrete in the support and control the injection amount of the concrete accordingly to avoid the problem caused by excessive pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0042] Figure 2 A bottom view of the three-dimensional structure of the present invention;

[0043] Figure 3 It is a side cross-sectional view of the three-dimensional structure of the moving part of the present invention;

[0044] Figure 4 It is a three-dimensional structural schematic diagram of the driving member of the present invention;

[0045] Figure 5 It is a three-dimensional structural cross-sectional view of the mobile station of the present invention;

[0046] Figure 6 It is a top view of the three-dimensional structure of the moving part of the present invention;

[0047] Figure 7 It is a schematic diagram of the three-dimensional structure of the first sliding member and the second sliding groove of the present invention;

[0048] Figure 8 It is a schematic diagram of the three-dimensional structure of the second sliding member and the third sliding groove of the present invention;

[0049] Fig. 9 It is a three-dimensional structural cross-sectional view of the first sliding member of the present invention.

[0050] The meanings of the reference numerals in the figure are as follows: 10, moving part, 101, first sliding groove, 11, telescopic frame, 12, hydraulic telescopic rod, 13, winding roller, 14, coil, 20, driving part, 21, moving platform, 30, fixed seat, 31, winch, 40, first sliding part, 41, second sliding groove, 42, oil storage shell, 43, sealing part, 44, rotating part, 50, second sliding part, 51, oil chamber, 52, third sliding groove, 60, fixed ring, 61, sliding block, 62, connecting rod, 63, connecting shell, 70, extrusion part, 71, cavity, 72, spring distance sensor. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In order to solve the problems that the existing support methods are too complicated and inefficient, the present invention simulates the principle of laying the covering film in the vegetable greenhouse, and lays the coiled material on the inner side of the annular steel bar support, so as to support the inner side of the annular steel bar support and prevent the concrete poured in the annular steel bar support from leaking out, thereby avoiding casting failure. By laying the coiled material, the support time of the annular steel bar support can be shortened, and it can be quickly rolled up after laying, thereby shortening the project progress and reducing the floor space.

[0053] Embodiment 1: An emergency support device for a shield tunnel, such as Figure 1-Figure 5 As shown, it includes: a moving part 10, the moving part 10 is slidably connected with a symmetrically distributed telescopic frame 11, the moving part 10 is provided with a rectangularly distributed first sliding groove 101, and the telescopic frame 11 slides in the adjacent first sliding groove 101; a hydraulic telescopic rod 12, the number of which is consistent with the telescopic frame 11, and is arranged on the adjacent telescopic frame 11, and the telescopic end of the hydraulic telescopic rod 12 is fixedly connected to the telescopic part of the adjacent telescopic frame 11; a winding roller 13, the number of which is consistent with the telescopic frame 11, and is rotatably connected to the telescopic part of the adjacent telescopic frame 11, an elastic member is arranged between the winding roller 13 and the adjacent telescopic frame 11, and a coil 14 is wound on the winding roller 13; a lifting component, which is arranged on the moving part 10, and is used to lift the height of all coils 14; a driving component, which is arranged on the moving part 10, and is used to drive all the telescopic frames 11 to move; a supporting component, which is arranged on the moving part 10, and is used to support all the coils 14.

[0054] In the above scheme, the outer side of the movable member 10 is an arc surface, the first sliding groove 101 is an arc, and the center of the circle where the first sliding groove 101 is located coincides with the center of the circle where the arc surface of the movable member 10 is located. There are four first sliding grooves 101 in the present invention, which are only used for examples. When the hydraulic telescopic rod 12 drives the telescopic part of the telescopic frame 11 to move downward or upward, the distance between the winding roller 13 and the movable member 10 is shortened or increased. The coil 14 is made of soft stainless steel. The elastic member between the winding roller 13 and the adjacent telescopic frame 11 can be a torsion spring or a coil spring. When the coil 14 is pulled out from the adjacent winding roller 13, the elastic member adjacent to the winding roller 13 is gradually tightened. The lifting component is used to control the distance between the adjacent sides of the two coils 14 and the movable member 10. The driving component is used to drive the two telescopic frames 11 to move back to back or toward each other, so as to assist the laying of the coil 14. The supporting component is used to fix the inside of the two laid coils 14 to enhance the structural strength of the two coils 14.

[0055] like Figure 2-Figure 5 As shown, the lifting assembly includes: mirror-distributed driving members 20, all of which are arranged on the moving member 10; a moving platform 21, fixedly connected to the telescopic end of the mirror-distributed driving members 20, and the moving platform 21 and the facing sides of the two coils 14 are detachably connected.

[0056] In the above scheme, the driving member 20 can be an electric push rod or an electric hydraulic push rod. The moving platform 21 is used to support the facing sides of the two coils 14. The purpose of the detachable coils 14 and the moving platform 21 is to facilitate installation and replacement.

[0057] like Figure 1 , Figure 2 and Figure 6 As shown in the figure, the driving assembly includes: fixed seats 30, at least four of which are fixedly connected to the moving member 10 and located below all the driving members 20; winches 31, which are the same in number as the fixed seats 30 and are fixedly connected to adjacent fixed seats 30, and the winches 31 are used to drive the adjacent telescopic frames 11 to move.

[0058] In the above scheme, there are four winches 31 in the present invention, which is only an example. The pull rope in the front left winch 31 is fixedly connected to the telescopic frame 11 on the left, the pull rope in the rear left winch 31 passes through the telescopic frame 11 on the left and is fixedly connected to the telescopic frame 11 on the right, the pull rope in the front right winch 31 passes through the telescopic frame 11 on the right and is fixedly connected to the telescopic frame 11 on the left, and the pull rope in the rear right winch 31 is fixedly connected to the telescopic frame 11 on the right.

[0059] like Figure 3 , Figure 4 and Figure 6-Figure 9As shown, the support assembly includes: symmetrical and spaced first sliding members 40, all of which are slidably connected to the moving member 10; second sliding grooves 41, which are consistent in number with the first sliding members 40 and are all arranged on the moving member 10, the first sliding member 40 slides in adjacent second sliding grooves 41, the spaced second sliding grooves 41 are all located between the mirror-distributed driving members 20, the lengths of the spaced second sliding grooves 41 are inconsistent, the telescopic frame 11 is fixedly connected to the first sliding member 40 located in the longest second sliding groove 41; oil storage shells 42, which are consistent in number with the first sliding members 40 and are fixedly connected to adjacent first sliding members 40; sealing members 43, which are consistent in number with the first sliding members 40 and are slidably connected to adjacent oil storage shells 42, the side of the sealing member 43 away from the moving member 10 is rotatably connected to a rotating member 44, the rotating member 44 is in contact with and cooperates with the adjacent coil 14, the rotating member 44 is elliptical, and the side of the rotating member 44 away from the adjacent sealing member 43 is provided with an arc surface.

[0060] In the above scheme, the first sliding member 40 and the second sliding groove 41 are both symmetrical on the moving member 10 and are evenly spaced in a straight line in the front-to-back direction. The length of the evenly spaced second sliding grooves 41 gradually increases from the front and rear sides of the moving member 10 to the middle of the moving member 10. The second sliding groove 41 is an arc-shaped groove, and the center of the circle where the second sliding groove 41 is located coincides with the center of the circle where the arc surface of the moving member 10 is located. The purpose of the rotating member 44 being elliptical is to increase the lateral supporting force. The purpose of providing the rotating member 44 with an arc surface is to enable the upper side of the rotating member 44 to be able to maintain contact with the inner side of the adjacent coil 14.

[0061] like Figure 7-Figure 9 As shown, the support blocking also includes: a second sliding member 50, which is consistent in number with the first sliding member 40 and is slidably connected to the side of the adjacent first sliding member 40 facing away from the adjacent rotating member 44; an oil chamber 51 is provided in the first sliding member 40, and the second sliding member 50 slides in the oil chamber 51; a third sliding groove 52, which is consistent in number with the second sliding groove 41, and the lengths of all the third sliding grooves 52 are inconsistent; the third sliding groove 52 is composed of an arc groove and an inclined groove; the second sliding member 50 slides in the adjacent third sliding groove 52, the oil chamber 51 is connected to the adjacent oil storage shell 42, and a connecting component is arranged on the moving member 10, for connecting the first sliding members 40 spaced apart on the same side; the diameter inside the oil storage shell 42 is inconsistent with the diameter inside the oil chamber 51, and is used to change the moving distance of the adjacent sealing member 43.

[0062] In the above scheme, the second sliding member 50 is composed of a circular plate, a straight rod and two spring pins. The circular plate is located at the upper end of the straight rod, and the two spring pins are located at the lower end of the straight rod. The oil chamber 51 is filled with hydraulic oil. The center of the circle where the arc groove in the third sliding groove 52 is located coincides with the center of the circle where the arc surface of the moving member 10 is located. The distance between the lower side of the inclined groove in the third sliding groove 52 and the central axis of the circle where the arc surface of the moving member 10 is located is smaller than the distance between the upper side of the inclined groove in the third sliding groove 52 and the central axis of the circle where the arc surface of the moving member 10 is located. This is used to enable the lower side of the second sliding member 50 to move away from or close to the central axis of the moving member 10 when sliding along the inclined groove in the adjacent third sliding groove 52.

[0063] like Figure 4 and Figure 8 As shown, the connecting assembly includes: fixed rings 60, the number of which is consistent with that of the first sliding members 40, and all of which are arranged on the moving member 10; symmetrical and spaced sliding blocks 61, all of which are arranged on the moving member 10, and the spaced sliding blocks 61 are respectively slidably connected to adjacent fixed rings 60, and the sliding blocks 61 are ball-connected with connecting rods 62, and a connecting shell 63 is slidably connected between two adjacent connecting rods 62, and a spring is arranged between the connecting shell 63 and the two adjacent connecting rods 62.

[0064] In the above solution, the fixing ring 60 can be formed by welding two rings or connecting two rings with bolts. An annular limiting groove is provided in the fixing ring 60, and the sliding block 61 slides in the annular limiting groove of the adjacent fixing ring 60.

[0065] Working principle: When secondary pouring is required, the staff first moves the device to the required working position (below the annular steel bar support), then fixes the device at the current position, and finally connects the liquid guide port of the external pressure control device to the hydraulic telescopic rod 12, thereby completing the preparation process before the device works.

[0066] After completing the preparation process before the operation of the device, the staff manipulates the telescopic parts of the two driving members 20 to lift the movable platform 21 upward, so that the upper side of the movable platform 21 is against the lower side of the annular steel support and the waterproof cloth, and at this time, the telescopic parts of the two driving members 20 stop moving.

[0067] After the upper side of the movable platform 21 is against the lower side of the annular steel bar support and the waterproof cloth, the staff operates the winches 31 on the left and right sides to reel in and release the pull ropes therein. The working principle of the two winches 31 at the front is as follows: the winch 31 on the left front is reeled in, and the winch 31 on the right front is released; the working principle of the two winches 31 at the rear is as follows: the winch 31 on the left rear is released, and the winch 31 on the right rear is reeled in, so that the two telescopic frames 11 both move back to back along the adjacent first sliding grooves 101.

[0068] Taking the movement process of the right telescopic frame 11 as an example, during the movement of the right telescopic frame 11, the two first sliding members 40 located in the middle of the moving member 10 are first driven to move synchronously to the right along the adjacent second sliding grooves 41. During the movement of the two first sliding members 40 located in the middle of the moving member 10, all the first sliding members 40 on the right side are driven to move to the right along the adjacent second sliding grooves 41 through the adjacent connecting rods 62 and connecting shells 63 and their accessory parts (during the movement of the first sliding member 40 along the adjacent second sliding groove 41, the second sliding member 50 also moves along the adjacent third sliding groove 52).

[0069] During the movement of the right telescopic frame 11, the right coil 14 is fixed by the moving platform 21, so that the coil 14 is released outward during the movement of the right telescopic frame 11. At this time, the pressure in the right hydraulic telescopic rod 12 is increased by the external pressure control device, so that the telescopic part of the hydraulic telescopic rod 12 drives the telescopic part of the adjacent telescopic frame 11 and the attached parts thereon to move upward synchronously, shortening the distance between the telescopic part of the telescopic frame 11 and the annular steel bar support, avoiding the diameter of the coil 14 shrinking during the release process, causing the distance between the telescopic part of the telescopic frame 11 and the annular steel bar support to gradually increase, resulting in the coil 14 being unable to effectively support and block concrete.

[0070] When all the first sliding members 40 on the right side drive the second sliding members 50 on the front and rear sides to move from the arc groove in the adjacent third sliding groove 52 to the inclined groove, the second sliding member 50 moves upward along the adjacent first sliding member 40, and squeezes the hydraulic oil in the adjacent oil chamber 51 into the adjacent oil storage shell 42, so that the adjacent sealing member 43 drives the adjacent rotating member 44 to move upward along the adjacent oil storage shell 42. Under the effect that the inner diameter of the oil chamber 51 is larger than the inner diameter of the adjacent oil storage shell 42, the sealing member 43 moves upward a distance greater than the moving distance of the second sliding member 50 in the adjacent oil chamber 51.

[0071] When the first sliding member 40 located on the front and rear sides moves to fit with the right side of the adjacent second sliding groove 41, the lower side of the second sliding member 50 has slid to contact with the right side of the inner inclined groove of the adjacent third sliding groove 52. At this time, the sealing member 43 has driven the adjacent rotating member 44 to press against the adjacent coil 14. The above steps achieve the effect of supporting the lower side of the coil 14.

[0072] When the first sliding members 40 on the front and rear sides move to fit with the right side of the adjacent second sliding groove 41, the first sliding members 40 on the front and rear sides stop moving, and then continue to drive the remaining first sliding members 40 to continue to swing to the right through the telescopic frame 11 on the right side. The remaining first sliding members 40 drag the adjacent sliding block 61 and its attached parts during the movement to the right, so that the sliding block 61 slides along the adjacent fixing ring 60 while dragging the adjacent connecting rod 62, so that the connecting rod 62 slides along the adjacent connecting shell 63 and squeezes the adjacent spring.

[0073] The subsequent movement process and effect of the first sliding member 40 and its attached parts can be repeated as described above. When all the first sliding members 40 on the right side slide to contact the right side of the adjacent second sliding groove 41, the telescopic frame 11 stops moving (all winches 31 stop working). At this time, the coil 14 has been laid. Subsequently, the staff will shield and support the front and rear sides of the coil 14 (so that the annular steel bar support remains stable after being injected with concrete). After the above work process is completed, the staff will inject concrete between the coil 14 and the annular steel bar support to achieve secondary reinforcement of the shield tunnel.

[0074] After completing the secondary reinforcement of the shield tunnel, the staff controls all the winches 31 to rotate in the opposite direction, so that the two telescopic frames 11 drive all the first sliding members 40 to reset to the left. During the process of the telescopic frame 11 driving the winding roller 13 to reset, the winding roller 13 reels the coil 14. During the reset process of the first sliding member 40 located on the right side, the adjacent second sliding member 50 slides along the inclined groove of the adjacent third sliding groove 52 to the arc groove therein. During the reset process of the second sliding member 50, the pressure in the oil chamber 51 and the adjacent oil storage shell 42 is reduced, so that the adjacent sealing member 43 drives the adjacent rotating member 44 to reset and no longer provides support for the coil 14.

[0075] During the reset movement of the first sliding member 40 on the right side, the spring in the connecting shell 63 drives the adjacent connecting rod 62 to reset. When the first sliding member 40 on the right side moves to be parallel to the adjacent first sliding member 40, the adjacent connecting rod 62 and the adjacent spring are reset to the basic state (the basic state is when the adjacent spring of the connecting rod 62 is not stretched, such as Figure 8 as shown).

[0076] During the resetting movement of the telescopic frame 11, the staff operates the pressure control device to reduce the pressure in the hydraulic telescopic rod 12, so that the telescopic part of the telescopic frame 11 drives the adjacent winding roller 13 to move toward the moving part 10, thereby shortening the distance between the winding roller 13 and the annular steel bar support.

[0077] When all the first sliding members 40 move to Figure 3After the state is reached, all the above-mentioned power components stop working, and then the staff controls the driving member 20 to lower the height of the moving platform 21, and then moves it to another working position. The subsequent supporting actions are repeated.

[0078] In the process of pouring concrete into the annular steel support, since it is impossible to accurately know the concrete capacity in the annular steel support, over-pouring is very likely to occur, which will not only increase the pressure in the annular steel support, but may also cause pressure imbalance inside the support, and even cause concrete leakage. In the process of supporting the annular steel support, the present invention uses the feedback force given by the waterproof cloth in the annular steel support to the present invention to detect the pressure of the concrete in the annular steel support, so that the staff can know the filling condition of the concrete in the annular steel support in time, and then control the amount of concrete injection.

[0079] Embodiment 2: Based on embodiment 1, Figure 4 and Figure 5 As shown, it also includes: a stress detection component, which is arranged on the mobile platform 21, and the stress detection component is used to detect the amount of concrete filling. The stress detection component includes: an extrusion member 70, which is slidably connected to the mobile platform 21, and a cavity 71 is arranged on the upper side of the mobile platform 21. The extrusion member 70 slides in the cavity 71, and a spring distance sensor 72 is fixedly connected to the mobile platform 21 and located in the cavity 71. The spring part of the spring distance sensor 72 is fixedly connected to the extrusion member 70.

[0080] In the above scheme, the lower part of the extrusion member 70 is located in the cavity 71, and the upper side of the extrusion member 70 is not sealed and slidably matched with the moving platform 21. The spring ranging sensor 72 is composed of a ranging module and a spring part. When the extrusion member 70 squeezes the spring part in the spring ranging sensor 72, the degree to which the spring part is compressed enables the ranging module to measure the moving distance of the extrusion member 70.

[0081] Working principle: When the movable platform 21 is lifted upward, the extrusion member 70 contacts the inner waterproof cloth and squeezes the waterproof cloth. When the movable platform 21 is completely in contact with the annular steel support and the waterproof cloth, the movable platform 21 stops moving. The subsequent working process of supporting the annular steel support can be repeated in Example 1.

[0082] After completing the support of the annular steel support, the staff injects concrete into the annular steel support. When the concrete in the annular steel support is filled to a volume close to the amount required for the work, the pressure in the annular steel support increases, causing the waterproof cloth inside to deform, causing the waterproof cloth to squeeze the extrusion piece 70 downward. During the downward movement of the extrusion piece 70, the spring part of the spring distance sensor 72 is squeezed, causing the spring distance sensor 72 to transmit the electrical signal to the staff in time, so that the staff can stop the injection of concrete in time to prevent excessive injection of concrete, resulting in excessive pouring in the annular steel support.

[0083] After completing the pouring of the annular steel bar support, the staff repeats the steps of storing the coil 14 in Example 1. After the coil 14 is stored, the staff operates the hydraulic telescopic rod 12 to drive the telescopic part of the telescopic frame 11 to move downward, so that the movable platform 21 and the extrusion piece 70 are away from the annular steel bar support. The extrusion piece 70 is driven by the spring distance measuring sensor 72 to move upward and reset. When the annular steel bar support needs to be supported again, the above actions can be repeated.

[0084] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. An emergency support device for a shield tunnel, comprising: A moving member (10), wherein the moving member (10) is slidably connected to symmetrically distributed telescopic frames (11), the moving member (10) is provided with rectangularly distributed first sliding grooves (101), and the telescopic frames (11) slide in adjacent first sliding grooves (101); The hydraulic telescopic rods (12) are the same in number as the telescopic frames (11) and are arranged on adjacent telescopic frames (11), and the telescopic ends of the hydraulic telescopic rods (12) are fixedly connected to the telescopic parts of the adjacent telescopic frames (11); It is characterized by further comprising: The number of winding rollers (13) is the same as that of the telescopic frames (11), and they are rotatably connected to the telescopic parts of the adjacent telescopic frames (11), an elastic member is provided between the winding roller (13) and the adjacent telescopic frames (11), and a coil (14) is wound around the winding roller (13); A lifting assembly, arranged on the moving member (10), and used for raising the height of all the coils (14); A driving assembly, arranged on the moving member (10), and used for driving all the telescopic frames (11) to move; A support assembly is arranged on the moving member (10) and is used to support all the coils (14).

2. The emergency support device for a shield tunnel according to claim 1, characterized in that: The lifting assembly comprises: The driving members (20) are arranged in a mirror-image arrangement on the moving member (10); The moving platform (21) is fixedly connected to the telescopic ends of the mirror-distributed driving members (20), and the moving platform (21) and the facing sides of the two coils (14) are both detachably connected.

3. The emergency support device for a shield tunnel according to claim 2, characterized in that: The drive assembly comprises: Fixed seats (30), at least four in number, all fixedly connected to the moving member (10) and located below all the driving members (20); The number of the hoists (31) is the same as that of the fixing seats (30), and the hoists (31) are fixedly connected to adjacent fixing seats (30). The hoists (31) are used to drive the adjacent telescopic frames (11) to move.

4. The emergency support device for a shield tunnel according to claim 3, characterized in that: The support assembly comprises: The first sliding members (40) are symmetrically and spaced apart and are all slidably connected to the moving member (10); The number of the second sliding grooves (41) is the same as that of the first sliding member (40), and both are arranged on the moving member (10); the first sliding member (40) slides in adjacent second sliding grooves (41); the second sliding grooves (41) arranged at intervals are all located between the driving members (20) arranged at mirror images; the lengths of the second sliding grooves (41) arranged at intervals are all inconsistent; the telescopic frame (11) is fixedly connected to the first sliding member (40) located in the longest second sliding groove (41); Oil storage shells (42), the number of which is the same as the number of the first sliding members (40), and which are fixedly connected to adjacent first sliding members (40); The sealing members (43) are the same in number as the first sliding members (40) and are slidably connected to the adjacent oil storage housing (42).

5. The emergency support device for a shield tunnel according to claim 4, characterized in that: A side of the sealing member (43) away from the moving member (10) is rotatably connected to a rotating member (44), and the rotating member (44) is in contact with and cooperates with the adjacent coil (14).

6. The emergency support device for a shield tunnel according to claim 5, characterized in that: The rotating member (44) is elliptical in shape, and a curved surface is provided on a side of the rotating member (44) away from the adjacent sealing member (43).

7. The emergency support device for a shield tunnel according to claim 6, characterized in that: Support blocks also include: The second sliding members (50) are the same in number as the first sliding members (40) and are slidably connected to a side of the adjacent first sliding member (40) facing away from the adjacent rotating member (44); an oil cavity (51) is provided in the first sliding member (40), and the second sliding member (50) slides in the oil cavity (51); The number of the third sliding grooves (52) is the same as that of the second sliding grooves (41), and the lengths of all the third sliding grooves (52) are different. The third sliding grooves (52) are composed of arc grooves and oblique grooves. The second sliding member (50) slides in adjacent third sliding grooves (52). The oil chamber (51) is connected to the adjacent oil storage shell (42); A connecting component is arranged on the moving member (10) and is used to connect the first sliding members (40) spaced apart on the same side.

8. The emergency support device for a shield tunnel according to claim 7, characterized in that: The diameter of the oil storage housing (42) is inconsistent with the diameter of the oil chamber (51), so as to change the moving distance of adjacent sealing elements (43).

9. The emergency support device for a shield tunnel according to claim 7, characterized in that: The connection component comprises: Fixed rings (60), the number of which is the same as that of the first sliding members (40), are all arranged on the moving member (10); The sliding blocks (61) are symmetrically and spaced apart, and are all arranged on the moving member (10). The sliding blocks (61) are respectively slidably connected to adjacent fixed rings (60). The sliding blocks (61) are ball-connected with connecting rods (62). Two adjacent connecting rods (62) are slidably connected with a connecting shell (63). A spring is arranged between the connecting shell (63) and the two adjacent connecting rods (62).

10. The emergency support device for a shield tunnel according to claim 2, characterized in that: Also includes: A stress detection component is arranged on the mobile platform (21), the stress detection component is used to detect the amount of concrete filling, and the stress detection component comprises: An extrusion member (70) is slidably connected to the moving platform (21); a cavity (71) is provided on the upper side of the moving platform (21), and the extrusion member (70) slides in the cavity (71); A spring distance measuring sensor (72) is fixedly connected to the moving platform (21) and is located in the cavity (71); a spring portion of the spring distance measuring sensor (72) is fixedly connected to the extrusion member (70).

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