Shield tail opening deviation rectification protection device and method for shield tunneling machine

Abstract

The invention discloses a shield tunneling machine shield tail opening deviation rectifying protection device and method.The shield tunneling machine shield tail opening deviation rectifying protection device comprises two reinforcing frames arranged on a shield tail, each reinforcing frame is arranged around an operation hole, a reinforcing supporting assembly is connected between the two reinforcing frames, and the reinforcing supporting assembly is connected with the shield tail opening deviation rectifying protection device. Each reinforcing frame is connected with a reinforcing vibration reduction assembly. According to the technical scheme, the reinforcing frames are arranged around the operation hole, the shield tail structure around the operation hole can be supported and reinforced, meanwhile, diffusion caused by structure weakening caused by the operation hole is prevented, meanwhile, the strength between the two reinforcing frames is improved through the reinforcing supporting assemblies, the overall stability is improved, and the service life of the shield tail structure is prolonged. And finally, vibration generated in shield tail opening deviation rectification and other construction processes is weakened through the reinforced vibration reduction assembly, and the safety of the shield tail is further guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of shield tail protection, in particular to a shield tail opening deviation correction protection device and method of a shield tunneling machine. BACKGROUND

[0002] During tunneling, if the soil generated by the shield cutterhead cannot be timely transported into the shield tunneling machine due to factors such as stratum or mechanical equipment failure, the soil will accumulate under the shield tunneling machine, causing the posture of the shield tunneling machine to deviate upward, thereby affecting the posture overrun of the formed tunnel segment, and thus the posture of the shield tunneling machine needs to be adjusted.

[0003] A current adjustment mode is to open an operation hole on the side wall of the shield tail of the shield tunneling machine, and then clean the soil under the shield tail through the operation hole, but this mode is prone to affecting the strength of the shield tail, and thus the shield tail needs to be protected. SUMMARY

[0004] The application aims to provide a shield tail opening deviation correction protection device and method of a shield tunneling machine, so as to improve the problem of insufficient shield tail structure strength.

[0005] In a first aspect, the application provides a shield tail opening deviation correction protection device of a shield tunneling machine, which adopts the following technical scheme: The shield tail opening deviation correction protection device of the shield tunneling machine comprises two reinforcing frames arranged on the shield tail, each reinforcing frame surrounds an operation hole, and reinforcing support assemblies are connected between the two reinforcing frames, and reinforcing damping assemblies are connected to each reinforcing frame.

[0006] By adopting the above technical scheme, the reinforcing frames are arranged around the operation hole to support and reinforce the shield tail structure around the operation hole, prevent the spread of structure weakening caused by the operation hole, increase the strength between the two reinforcing frames by the reinforcing support assemblies, improve the overall stability, and weaken the vibration generated during the shield tail opening deviation correction and other construction processes by the reinforcing damping assemblies, thereby further ensuring the safety of the shield tail.

[0007] Optionally, the reinforcing frame comprises four reinforcing plates connected to the inner wall of the shield tail, the four reinforcing plates are connected in a head-to-tail manner and surround the operation hole, and the minimum distance between each reinforcing plate and the operation hole is equal.

[0008] By adopting the above technical scheme, the four reinforcing plates reinforce the operation hole, and the distance between the reinforcing plates and the operation hole is equal, which can further ensure the uniformity of the reinforcement of the operation hole.

[0009] Optionally, the shape of the reinforcing frame is the same as that of the operation hole.

[0010] Through the technical scheme, the shape of the reinforcing frame is the same as that of the operation hole, the uniformity of reinforcing the operation hole is improved, and the reinforcing effect is ensured.

[0011] Optionally, a reinforcing rib is connected between the reinforcing plate and the inner wall of the shield tail, and the reinforcing rib is triangular.

[0012] Through the technical scheme, the strength of the connection between the reinforcing plate and the shield tail is improved by the reinforcing member, and the stability of the reinforcing plate in reinforcing the operation hole is improved.

[0013] Optionally, the reinforcing support assembly comprises two support rods and a connecting rod, two ends of the two support rods are respectively connected with two reinforcing frames, the connecting rod is connected between the two support rods, and the connecting rod is arranged perpendicularly to the two support rods.

[0014] Through the technical scheme, the stability of fixing the two reinforcing frames is improved by the cooperation of the two support rods and the connecting rod.

[0015] Optionally, the reinforcing and damping assembly comprises a first mounting plate, a second mounting plate and a third mounting plate connected to the inner wall of the shield tail, a vertical rod connected between the first mounting plate and the second mounting plate, a horizontal rod connected between the third mounting plate and the vertical rod, a first inclined rod connected between the first mounting plate and the third mounting plate, a second inclined rod connected between the second mounting plate and the third mounting plate, a right-angled triangle formed between the vertical rod, the horizontal rod and the first inclined rod, a right-angled triangle formed between the vertical rod, the horizontal rod and the second inclined rod, and the first mounting plate connected with the reinforcing frame.

[0016] Through the technical scheme, two right-angled triangles are formed by the vertical rod, the horizontal rod, the first inclined rod and the second inclined rod, the reinforcing of the shield tail is further improved, the overall strength is improved, and the possibility of the operation hole affecting the shield tail is reduced.

[0017] Optionally, an energy-absorbing spring is sleeved on the first inclined rod and the second inclined rod, respectively, one end of the energy-absorbing spring on the first inclined rod abuts against the first mounting plate, and the other end abuts against the third mounting plate, one end of the energy-absorbing spring on the second inclined rod abuts against the second mounting plate, and the other end abuts against the third mounting plate.

[0018] Through the technical scheme, when the shield tail vibrates, the energy-absorbing spring can dissipate energy through the extension and contraction process, thereby achieving a certain degree of damping.

[0019] Optionally, an adjusting sleeve is threadedly connected to the first mounting plate, the second mounting plate or the third mounting plate, the adjusting sleeve is sleeved on the first inclined rod or the second inclined rod, and the adjusting sleeve is used to abut against the energy-absorbing spring.

[0020] Through the technical scheme, the contraction degree of the energy-absorbing spring is adjusted, and vibration reduction is better achieved.

[0021] In a second aspect, the application provides a shield tail opening deviation correction method of a shield tunneling machine.

[0022] A shield tail opening deviation correction method of a shield tunneling machine, comprising the following steps: S1, installing the shield tail opening deviation correction protection device in the shield tail of the shield tunneling machine, and then opening an operation hole in the side wall of the shield tail; S2, an operator excavates the soil under the shield tunneling machine through the operation hole, and gradually excavates a first groove under the shield tunneling machine; S3, then excavating a second groove perpendicular to the first groove from the side wall of the first groove, and cleaning the outer surface of the shield tunneling machine above the first groove and the second groove, so that the outer surface of the shield tunneling machine is kept smooth; S4, cleaning the soil at the bottom of the shield tunneling machine through the first groove and the second groove, until the soil under the shield tunneling machine is cleaned by one layer, so that the angle of the shield tunneling machine reaches the design angle.

[0023] Optionally, in step S1, when installing the shield tail opening deviation correction protection device of the shield tunneling machine, first install the reinforcing frame, and then install the reinforcing support assembly and the reinforcing damping assembly.

[0024] In summary, the application has at least one of the following beneficial technical effects: 1. By setting the reinforcing frame around the operation hole, the structure of the shield tail around the operation hole can be supported and strengthened, and the weakening of the structure caused by the operation hole is prevented from spreading, the strength between the two reinforcing frames is increased by the reinforcing support assembly, the overall stability is improved, and finally the vibration caused by the shield tail opening deviation correction and other construction processes is weakened by the reinforcing damping assembly, further ensuring the safety of the shield tail; 2. The reinforcing frame comprises four reinforcing plates connected to the inner wall of the shield tail, the four reinforcing plates are connected end to end, and the operation hole is surrounded, and the minimum distance between each reinforcing plate and the operation hole is equal.

[0025] Through the technical scheme, the operation hole is reinforced by the four reinforcing plates, and the distance between the reinforcing plates and the operation hole is equal, which can further ensure the uniformity of the reinforcement of the operation hole; 3. The shape of the reinforcing frame is the same as that of the operation hole, which can improve the uniformity of the reinforcement of the operation hole, and further ensure the reinforcement effect; 4. The strength of the connection between the reinforcing plate and the shield tail is improved by the reinforcing piece, and the stability of the reinforcing plate in reinforcing the operation hole is improved; 5. The reinforcing support assembly comprises two support rods and a connecting rod, two ends of the two support rods are connected with two reinforcing frames respectively, the connecting rod is connected between the two support rods, and the connecting rod is arranged perpendicularly to the two support rods. 6. By arranging the energy-absorbing spring, when the tail of the shield vibrates, the energy-absorbing spring can dissipate energy through the stretching and contracting process, thereby achieving a certain degree of vibration reduction. 7. Two right-angled triangles are formed by the vertical rod, the horizontal rod, the first inclined rod and the second inclined rod, which further enhances the reinforcement of the tail of the shield, improves the overall strength and reduces the possibility of the operation hole affecting the tail of the shield. 8. The contraction degree of the energy-absorbing spring is adjusted by the adjusting sleeve, thereby better achieving vibration reduction. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the structure diagram of the reinforcing device in the application.

[0027] Figure 2 is Figure 1 the local enlarged view of A part in

[0028] Figure 3 is the structure diagram of the reinforcing and vibration reduction assembly in the application.

[0029] Figure 4 is the top view structure diagram of the first groove and the second groove in the application.

[0030] Figure 5 is the structure diagram of the cutting device in the application.

[0031] Figure 6 is the structure diagram of the vacuum adsorption assembly and the moving mechanism in the application.

[0032] Figure 7 is the structure diagram of the top support device in the application.

[0033] Figure 8 is the structure diagram of the locking part in the application.

[0034] In the figure, 1, rack; 11, moving mechanism; 111, first rotating piece; 112, first turntable; 113, second rotating piece; 114, moving wheel; 12, adsorbing mechanism; 121, electromagnetic adsorbing assembly; 122, permanent magnet adsorbing assembly; 123, vacuum adsorbing assembly; 1231, first telescopic piece; 1232, vacuum chuck; 124, distance sensor; 13, water jet cutting mechanism; 131, rotating adjusting assembly; 1311, third rotating piece; 1312, second turntable; 132, inclination adjusting assembly; 1321, second telescopic piece; 1322, third telescopic piece; 133, water jet; 2, reinforcing frame; 21, reinforcing plate; 22, reinforcing rib; 3, reinforcing support assembly; 31, support rod; 32, connecting rod; 4, reinforcing damping assembly; 41, first mounting plate; 42, second mounting plate; 43, third mounting plate; 44, vertical rod; 45, horizontal rod; 46, first inclined rod; 47, second inclined rod; 48, energy-absorbing spring; 49, adjusting sleeve; 5, shield machine; 51, operation hole; 52, first groove; 53, second groove; 6, jacking assembly; 61, fourth telescopic piece; 62, locking sleeve; 621, sliding groove; 63, locking piece; 631, locking block; 632, pull rod; 633, limiting spring; 634, locking tooth; 635, locking groove; 7, V-shaped support assembly; 71, V-shaped plate; 72, extension plate; 73, first flange; 74, second flange; 75, fit plate; 751, circular arc surface; 752, cylindrical roller. DETAILED DESCRIPTION

[0035] The application will now be described in further detail with reference to the drawings. These drawings show only the essential features of the application and are therefore to be regarded only as a schematic representation of the basic structure of the application.

[0036] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the features defined with "first", "second" can be explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more. In the description of the present application, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] Embodiment one In a first aspect, the present application discloses a shield tail opening deviation correction protection device of a shield tunneling machine.

[0038] A shield tail opening deviation correction protection device of a shield tunneling machine, referring to Figures 1 to 8 , comprising two reinforcing frames 2 arranged on the shield tail, each reinforcing frame 2 is arranged around an operation hole 51, and a reinforcing support assembly 3 is connected between the two reinforcing frames 2, and a reinforcing damping assembly 4 is connected to each reinforcing frame 2. By arranging the reinforcing frame 2 around the operation hole 51, the structure of the shield tail around the operation hole 51 can be supported and strengthened, and the structural weakening caused by the operation hole 51 is prevented from spreading, and the strength between the two reinforcing frames 2 is increased by the reinforcing support assembly 3, and the overall stability is improved, and finally the vibration generated during the shield tail opening deviation correction and other construction processes is weakened by the reinforcing damping assembly 4, further ensuring the safety of the shield tail.

[0039] Specifically, the reinforcing frame 2 comprises four reinforcing plates 21 connected with the inner wall of the shield tail, the four reinforcing plates 21 are connected end to end and surround the operation hole 51, and the minimum distance between each reinforcing plate 21 and the operation hole 51 is equal. By reinforcing the operation hole 51 with the four reinforcing plates 21, and by equalizing the distance between the reinforcing plate 21 and the operation hole 51, the uniformity of the reinforcement of the operation hole 51 can be further ensured.

[0040] It should be noted that the shape of the reinforcing frame 2 is the same as that of the operation hole 51, which can improve the uniformity of the reinforcement of the operation hole 51, thereby ensuring the reinforcement effect.

[0041] The reinforcing plate 21 is connected with the inner wall of the shield tail through a reinforcing rib 22, which is triangular or quadrilateral. The reinforcing rib 22 improves the connection strength between the reinforcing plate 21 and the shield tail, thereby improving the stability of the reinforcing plate 21 in reinforcing the operation hole 51.

[0042] The reinforcing support assembly 3 includes two support rods 31 and a connecting rod 32. The two ends of the two support rods 31 are respectively connected with the two reinforcing frames 2, and the connecting rod 32 is connected between the two support rods 31 and is perpendicular to the two support rods 31. Through the cooperation of the two support rods 31 and the connecting rod 32, the stability of the two reinforcing frames 2 is improved.

[0043] Specifically, the reinforcing and damping assembly 4 includes a first mounting plate 41, a second mounting plate 42 and a third mounting plate 43 connected to the inner wall of the shield tail. The first mounting plate 41 is connected with the second mounting plate 42 through a vertical rod 44, the third mounting plate 43 is connected with the vertical rod 44 through a horizontal rod 45, the first mounting plate 41 is connected with the third mounting plate 43 through a first inclined rod 46, the second mounting plate 42 is connected with the third mounting plate 43 through a second inclined rod 47, the vertical rod 44, the horizontal rod 45 and the first inclined rod 46 form a right triangle, the vertical rod 44, the horizontal rod 45 and the second inclined rod 47 form a right triangle, and the first mounting plate 41 is connected with the reinforcing frame 2. Through the two right triangles formed by the vertical rod 44, the horizontal rod 45, the first inclined rod 46 and the second inclined rod 47, the reinforcement of the shield tail is further improved, the overall strength is improved, and the possibility of the shield tail being affected by the operation hole 51 is reduced.

[0044] More specifically, an energy-absorbing spring 48 is sleeved on each of the first inclined rod 46 and the second inclined rod 47. One end of the energy-absorbing spring 48 on the first inclined rod 46 abuts against the first mounting plate 41, and the other end abuts against the third mounting plate 43. One end of the energy-absorbing spring 48 on the second inclined rod 47 abuts against the second mounting plate 42, and the other end abuts against the third mounting plate 43. Through the setting of the energy-absorbing spring 48, when the shield tail vibrates, the energy-absorbing spring 48 can dissipate energy through the expansion and contraction process, thereby achieving a certain degree of damping. The energy-absorbing spring 48 is a compression spring.

[0045] It should be noted that the first inclined rod 46 and the second inclined rod 47 are both damping rods, which can better cooperate with the energy-absorbing spring 48 to achieve damping.

[0046] Further, the first mounting plate 41, the second mounting plate 42 or the third mounting plate 43 is threadedly connected with an adjusting sleeve 49, the adjusting sleeve 49 is sleeved on the first inclined rod 46 or the second inclined rod 47, and the adjusting sleeve 49 is used for abutting against the energy-absorbing spring 48. The adjusting sleeve 49 is used for adjusting the contraction degree of the energy-absorbing spring 48, and vibration is better reduced.

[0047] In a second aspect, the application provides a shield tail opening deviation correction method of a shield machine 5.

[0048] A shield tail opening deviation correction method of a shield machine 5 comprises the following steps: S1, the shield tail opening deviation correction protection device of the shield machine 5 is installed in the shield tail of the shield machine 5, then an operation hole 51 is formed on the side wall of the shield tail, and when the shield tail opening deviation correction protection device of the shield machine 5 is installed, the reinforcing frame 2 is first installed, and then the reinforcing support assembly 3 and the reinforcing damping assembly 4 are installed.

[0049] S2, an operator excavates the soil under the shield machine 5 through the operation hole 51, and gradually excavates a first groove 52 under the shield machine 5; S3, then a second groove 53 perpendicular to the first groove 52 is excavated from the side wall of the first groove 52, and the outer surface of the shield machine 5 above the first groove 52 and the second groove 53 is cleaned to keep the outer surface of the shield machine 5 smooth; S4, the cutting device is installed through the first groove 52 and the second groove 53 to clean the soil at the bottom of the shield machine 5, until the soil under the corners of the shield machine 5 is cleaned to one layer, and the angle of the shield machine 5 reaches the design angle.

[0050] The cutting device comprises a rack 1, the bottom of the rack 1 is provided with a moving mechanism 11 and a suction mechanism 12, the moving mechanism 11 is used for contacting the outer side of the shield machine 5 and driving the rack 1 to move on the outer side of the shield machine 5, the suction mechanism 12 is used for generating a suction force on the outer side of the shield machine 5 to keep the moving mechanism 11 in contact with the outer side of the shield machine 5, and the rack 1 is further provided with a water jet 133 cutting mechanism 13, the water jet 133 cutting mechanism 13 is used for outputting a water jet 133 to clean the soil at the bottom of the shield machine 5.

[0051] The suction mechanism 12 generates a suction force on the outer side of the shield machine 5, the moving mechanism 11 keeps in contact with the outer side of the shield machine 5, and then the moving mechanism 11 drives the rack 1 to move on the outer surface of the shield machine 5, and the water jet 133 cutting mechanism 13 can clean the soil under the shield machine 5, and the moving mechanism 11 can clean the whole layer of soil under the shield machine 5, without excavating a deep well, saving cost, especially suitable for the case that the shield depth is large or the ground construction is inconvenient, and improving the convenience of construction.

[0052] Specifically, the adsorption mechanism 12 comprises a permanent magnetic adsorption assembly 122 and an electromagnetic adsorption assembly 121, the permanent magnetic adsorption assembly 122 is arranged at the middle position of the rack 1, the electromagnetic adsorption assembly 121 is arranged at the edge position of the rack 1, and the electromagnetic adsorption assembly 121 is in the closed state when the rack 1 is placed on or taken off the outer surface of the shield tunneling machine 5. The basic adsorption force is maintained by the permanent magnetic adsorption assembly 122, and the enhanced adsorption force is provided by the electromagnetic adsorption assembly 121, thereby reducing the possibility of the moving mechanism 11 being separated from the surface of the shield tunneling machine 5, and reducing the resistance when the rack 1 is placed or taken off. The permanent magnetic adsorption assembly 122 can adopt a permanent magnet, and the electromagnetic adsorption assembly 121 can adopt an electromagnet.

[0053] Specifically, the adsorption assembly further comprises a vacuum adsorption assembly 123, the vacuum adsorption assembly 123 is in the working state when the water jet 133 cutting mechanism 13 is working, and the vacuum adsorption assembly 123 is in the closed state when the water jet 133 cutting mechanism 13 is not working. When the water jet 133 cutting mechanism 13 is working, the rack 1 is temporarily fixed by the vacuum adsorption assembly 123, thereby reducing the possibility of the rack 1 being displaced due to the reaction force generated by the water jet 133 cutting mechanism 13.

[0054] More specifically, the vacuum adsorption assembly 123 comprises a first telescopic piece 1231 and a vacuum suction cup 1232, the first telescopic piece 1231 is fixedly connected to the rack 1, the vacuum suction cup 1232 is connected to the movable end of the first telescopic piece 1231, and the vacuum suction cup 1232 is communicated with a negative pressure pipe. The first telescopic piece 1231 facilitates driving the vacuum suction cup 1232 to contact or be separated from the surface of the shield tunneling machine 5, and the vacuum suction cup 1232 cooperates with the negative pressure pipe to generate a larger adsorption force, thereby temporarily fixing the rack 1 on the outer surface of the shield tunneling machine 5, providing stable working conditions for the water jet 133 cutting mechanism 13, and thereby improving the efficiency and effect of cleaning the soil at the bottom of the shield tunneling machine 5.

[0055] The moving mechanism 11 is provided in four groups, and the four groups of moving mechanisms 11 are arranged at the four corner points of the rack 1. The moving mechanism 11 comprises a first rotating piece 111, a first rotating disc 112, a second rotating piece 113, and a moving wheel 114, the first rotating piece 111 is fixedly connected to the rack 1, the first rotating disc 112 is fixedly connected to the movable end of the first rotating piece 111, the second rotating piece 113 is fixedly connected to the first rotating disc 112, and the moving wheel 114 is coaxially fixedly connected to the movable end of the second rotating piece 113. The direction of the moving wheel 114 is adjusted by the first rotating disc 112 to adjust the moving direction of the moving wheel 114, and the second rotating piece 113 facilitates driving the moving wheel 114 to rotate, thereby driving the rack 1 to move on the outer surface of the shield tunneling machine 5.

[0056] Further, the water cutter 133 cutting mechanism 13 comprises a rotation adjusting assembly 131 connected with the rack 1, an inclination adjusting assembly 132 connected with the movable end of the rotation adjusting assembly 131, and the water cutter 133 connected with the movable end of the inclination adjusting assembly 132. The working direction of the water cutter 133 can be adjusted around the axis direction of the rotation adjusting assembly 131 through the rotation adjusting assembly 131, and the working direction of the water cutter 133 can be adjusted along the axis direction of the rotation adjusting assembly 131 through the inclination adjusting assembly 132, thereby improving the flexibility of the water cutter 133 working.

[0057] Specifically, the rotation adjusting assembly 131 comprises a third rotating piece 1311 fixedly connected with the rack 1 and a second rotating disc 1312 connected with the movable end of the third rotating piece 1311, and the inclination adjusting assembly 132 is connected with the second rotating disc 1312. The third rotating piece 1311 and the second rotating disc 1312 facilitate the rotation of the inclination adjusting assembly 132, thereby facilitating the adjustment of the working direction of the water cutter 133.

[0058] The inclination adjusting assembly 132 comprises a second telescopic piece 1321 and a third telescopic piece 1322 arranged on the second rotating disc 1312, and the movable ends of the second telescopic piece 1321 and the third telescopic piece 1322 are respectively hingedly connected with the water cutter 133. The second telescopic piece 1321 and the third telescopic piece 1322 cooperate to facilitate the adjustment of the front and back positions of the water cutter 133, thereby adjusting the working direction of the water cutter 133 along the axis direction of the second rotating disc 1312.

[0059] The rack 1 is provided with distance sensors 124 on the side facing the outer side of the shield machine 5, the distance sensors 124 are arranged at the edge positions of the rack 1, and a plurality of distance sensors 124 are arranged along the circumference of the rack 1. Each distance sensor 124 is electrically connected with an electromagnetic adsorption assembly 121, and the distance sensor 124 can be a laser range finder. The distance sensors 124 can be used to monitor the distance between each position of the rack 1 and the outer surface of the shield machine 5 in real time, thereby facilitating the adjustment of the adsorption force of the corresponding electromagnetic adsorption assembly 121 to maintain the balance of the whole rack 1.

[0060] S5, if the posture of the shield machine 5 is inclined downward due to excessive cleaning of the soil under the shield machine 5, the shield machine 5 is jacked up to a set height through the jacking device.

[0061] The jacking device comprises a jacking assembly 6 installed in the first groove 52 and a V-shaped support assembly 7 connected with the movable end of the jacking assembly 6, and the V-shaped support assembly 7 is used to support the shield machine 5. The shield machine 5 is supported by the V-shaped support assembly 7, and then the V-shaped support assembly 7 is jacked up by the jacking assembly 6, thereby jacking up the shield machine 5 to adjust the posture of the shield machine 5.

[0062] The jacking assembly 6 is provided in multiple groups, and the movable ends of the multiple groups of jacking assemblies 6 are connected with the V-shaped support assembly 7. The multiple groups of jacking assemblies 6 can improve the jacking power and the uniformity of the jacking stress, thereby ensuring the stability of the attitude adjustment of the shield machine 5.

[0063] Specifically, the jacking assembly 6 includes a fourth telescopic piece 61, the extending rod of the fourth telescopic piece 61 is connected with the V-shaped support assembly 7, a locking sleeve 62 is installed on the fourth telescopic piece 61, and a locking piece 63 is arranged between the extending rod of the fourth telescopic piece 61 and the locking sleeve 62. The locking sleeve 62 and the locking piece 63 facilitate locking the extending rod of the fourth telescopic piece 61, thereby preventing the extending rod of the fourth telescopic piece 61 from retracting during the operation.

[0064] More specifically, the locking sleeve 62 is internally provided with a sliding groove 621, the locking piece 63 includes a locking block 631, a pull rod 632 and a limiting spring 633, the locking block 631 slides in the sliding groove 621, a locking groove 635 is formed in the side wall of the extending rod, a locking tooth 634 for being clamped in the locking groove 635 is arranged on the locking block 631, the pull rod 632 is connected with the end of the locking block 631 away from the locking groove 635, the end of the pull rod 632 away from the locking block 631 penetrates out of the locking sleeve 62, the limiting spring 633 is sleeved on the pull rod 632, one end of the limiting spring 633 abuts against the groove bottom of the sliding groove 621, and the other end of the limiting spring 633 abuts against the locking block 631. The limiting spring 633 applies pressure to the locking block 631, so that the locking tooth 634 can be clamped in the locking groove 635, thereby preventing the telescopic rod from moving downward.

[0065] It should be noted that the cross-sectional shape of the locking tooth 634 is triangular, and the locking groove 635 is matched with the locking tooth 634, so that when the extending rod extends, the locking groove 635 can pass over the locking tooth 634, and when the extending rod retracts, the locking tooth 634 engages with the locking groove 635. Through the specific triangular shape of the locking tooth 634 and the locking groove 635, when the extending rod extends, the locking groove 635 can pass over the locking tooth 634, and when the extending rod retracts, the locking tooth 634 engages with the locking groove 635, thereby realizing automatic locking and further ensuring the safety of the fourth telescopic piece 61.

[0066] Specifically, the V-shaped support assembly 7 comprises a V-shaped plate 71 and two extension plates 72 connected to the two sides of the V-shaped plate 71 respectively. The V-shaped support assembly 7 is disassembled into the V-shaped plate 71 and the two extension plates 72, which facilitates the lifting through the operation hole 51 and improves the construction convenience. The two sides of the V-shaped plate 71 are respectively provided with a clamping groove, and each extension plate 72 is connected with a clamping plate for being inserted into the clamping groove. The extension plate 72 is connected with a first flange 73, and the V-shaped plate 71 is provided with a second flange 74. The first flange 73 and the second flange 74 are connected by bolts. The reliable fixation of the V-shaped plate 71 and the extension plate 72 is ensured by the cooperation of the clamping plate and the clamping groove and the reinforcement of the first flange 73 and the second flange 74, thereby guaranteeing the safety of the posture adjustment of the shield machine 5.

[0067] The extension plate 72 is fixedly connected with a fitting plate 75, and the fitting plate 75 is provided with a circular arc surface 751 matched with the outer surface of the shield machine 5. A plurality of cylindrical rollers 752 are arranged on the circular arc surface 751, and the cylindrical rollers 752 are rotatably connected with the fitting plate 75. The axis of the cylindrical rollers 752 is perpendicular to the axis of the shield machine 5, so as to facilitate the movement of the shield machine 5 along the axis direction thereof. The frictional force during the movement of the shield machine 5 is reduced by the arrangement of the cylindrical rollers 752.

[0068] It should be noted that after the shield machine 5 travels a distance, the jacking device is recycled through the first groove 52 and the second groove 53. The bottom of the first groove 52 is reinforced by a concrete or a steel plate, and a drainage ditch is arranged to collect water and pump it away by a water pump, so as to avoid polluting underground water.

[0069] Working principle: The first groove 52 and the second groove 53 are excavated below the shield machine 5 to provide a working space for cleaning the soil below the shield machine 5, thereby realizing the cleaning of the soil below the shield machine 5 at a low cost. If the posture of the shield machine 5 is inclined downward after the soil below the shield machine 5 is cleaned, the shield machine 5 is jacked up by the jacking device to a set height, thereby eliminating the need for excavating a vertical shaft from the ground, and improving the construction efficiency.

[0070] The embodiments of the specific embodiment are the preferred embodiments of the present application, and do not limit the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A shield tail opening deviation correction protection device for a shield tunneling machine, characterized in that, Two reinforcing frames (2) are arranged on the tail of the shield, each of the reinforcing frames (2) surrounds an operation hole (51), and reinforcing support assemblies (3) are connected between the two reinforcing frames (2); and reinforcing damping assemblies (4) are connected to each of the reinforcing frames (2).

2. The shield tail opening deviation correction protection device of a shield tunneling machine according to claim 1, characterized in that: The reinforcing frame (2) comprises four reinforcing plates (21) connected to the inner wall of the tail of the shield, the four reinforcing plates (21) are connected end to end and surround the operation hole (51), and the minimum distance between each reinforcing plate (21) and the operation hole (51) is equal.

3. The shield tail opening deviation protection device of a shield tunneling machine according to claim 2, characterized in that: The reinforcing frame (2) has the same shape as the operation hole (51).

4. The shield tail opening deviation protection device of a shield tunneling machine according to claim 3, characterized in that: The reinforcing plate (21) is connected to the inner wall of the tail of the shield through a reinforcing rib (22), and the reinforcing rib (22) is triangular.

5. The shield tail opening deviation protection device of a shield tunneling machine according to claim 4, characterized in that: The reinforcing support assembly (3) comprises two support rods (31) and a connecting rod (32), the two ends of the two support rods (31) are respectively connected to the two reinforcing frames (2), and the connecting rod (32) is connected between the two support rods (31) and is arranged perpendicularly to the two support rods (31).

6. The shield tail opening deviation protection device of a shield tunneling machine according to claim 5, characterized in that: The reinforcing damping assembly (4) comprises a first mounting plate (41), a second mounting plate (42) and a third mounting plate (43) connected to the inner wall of the tail of the shield, a vertical rod (44) is connected between the first mounting plate (41) and the second mounting plate (42), a horizontal rod (45) is connected between the third mounting plate (43) and the vertical rod (44), a first inclined rod (46) is connected between the first mounting plate (41) and the third mounting plate (43), a second inclined rod (47) is connected between the second mounting plate (42) and the third mounting plate (43), the vertical rod (44), the horizontal rod (45) and the first inclined rod (46) form a right-angled triangle, the vertical rod (44), the horizontal rod (45) and the second inclined rod (47) form a right-angled triangle, and the first mounting plate (41) is connected to the reinforcing frame (2).

7. The shield tail opening deviation protection device of a shield tunneling machine according to claim 6, characterized in that: An energy-absorbing spring (48) is sleeved on the first inclined rod (46) and the second inclined rod (47), respectively, one end of the energy-absorbing spring (48) on the first inclined rod (46) abuts against the first mounting plate (41), the other end abuts against the third mounting plate (43), one end of the energy-absorbing spring (48) on the second inclined rod (47) abuts against the second mounting plate (42), and the other end abuts against the third mounting plate (43).

8. The shield tail opening deviation protection device of a shield tunneling machine according to claim 7, characterized in that: An adjusting sleeve (49) is threadedly connected to the first mounting plate (41), the second mounting plate (42) or the third mounting plate (43), the adjusting sleeve (49) is sleeved on the first inclined rod (46) or the second inclined rod (47), and the adjusting sleeve (49) is used for abutting against the energy-absorbing spring (48).

9. A method for correcting deviation of a shield tail opening of a shield tunneling machine, characterized in that: The method comprises the following steps: S1, installing the shield tail opening deviation correction protection device according to any one of claims 1-8 in the tail of the shield tunneling machine (5), and then opening an operation hole (51) on the side wall of the tail of the shield tunneling machine (5); S2, an operator excavates the soil below the shield tunneling machine (5) through the operation hole (51) and gradually excavates a first groove (52) below the shield tunneling machine (5); S3, then excavate the second trench (53) perpendicular to the first trench (52) from the side wall of the first trench (52), clean the outer surface of the shield machine (5) above the first trench (52) and the second trench (53) to keep the outer surface of the shield machine (5) smooth; S4, clean the soil at the bottom of the shield machine (5) through the first trench (52) and the second trench (53) until the soil under the corner of the shield machine (5) is cleaned by one layer, so that the angle of the shield machine (5) reaches the design angle.

10. The method according to claim 9, wherein: In step S1, when installing the shield tail opening deviation correction protection device of the shield machine, first install the reinforcing frame (2), and then install the reinforcing support assembly (3) and the reinforcing damping assembly (4).

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