A segment deviation rectifying device suitable for curved segment shield TBM tunnel construction

Abstract

The application discloses a segment deviation rectifying device suitable for curved segment shield TBM tunnel construction, which comprises a shield body, a mounting plate fixedly connected in the shield body, a plurality of hydraulic push rods arranged in an annular array in the shield body, a guide rail arranged on an inner arc surface of the mounting plate, a first sliding seat and a second sliding seat slidingly connected on the guide rail, wherein one end of the first sliding seat is hingedly connected with one end of a limiting ring, the other end of the limiting ring is hingedly connected with an adjusting oil cylinder, and the adjusting oil cylinder is hingedly connected with the second sliding seat; the first sliding seat and the second sliding seat are fixedly connected with a ring rail, a filling sliding seat is slidingly connected on the ring rail, the filling sliding seat is slidingly connected with an extendable filling pipe, the extendable filling pipe extrudes filling mortar, and the filling pipe is limited by the limiting ring. The application adjusts the adjacent double shield TBM tunnel segments by adjusting the actual shield posture, and solves the problem of the double shield TBM tunnel segment water stop belt sealing problem caused by the non-uniform gap between the adjacent double shield TBM tunnel segments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of double shield TBM tunnel segment construction deviation correction, and particularly relates to a segment deviation correction device suitable for shield TBM tunnel construction of a curve section. BACKGROUND

[0002] The segment deviation correction of the double shield TBM tunnel of the curve section refers to the process that, when the posture of the shield tunneling machine deviates from the design tunnel center line in the shield tunneling process, the posture of the shield tunneling machine tends to the design tunnel center line by adjusting the hydraulic oil pressure of the propulsion oil cylinder of the shield tunneling machine. The shield tunneling machine needs to be continuously corrected in posture to ensure that the shield tunneling machine does not deviate from the design axis, so as to ensure the accuracy and safety of the tunnel construction.

[0003] In the deviation correction process, uneven gaps are formed between adjacent double shield TBM tunnel segments, and there are problems such as positioning deviation of the filling and grouting of the gaps, and thickness mismatch of the filling material. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art, and to provide a segment deviation correction device suitable for shield TBM tunnel construction of a curve section.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A segment deviation correction device suitable for shield TBM tunnel construction of a curve section, comprising a shield body, a mounting plate fixedly connected in the shield body, a plurality of hydraulic push rods arranged in an annular array in the shield body, each hydraulic push rod controlled by a posture correction system to have different extension amounts to play a deviation correction role, a guide rail arranged on an inner arc surface of the mounting plate, a first sliding seat and a second sliding seat slidingly connected on the guide rail, the first sliding seat and the second sliding seat respectively driven by a driving device to change the position on the guide rail, wherein one end of the first sliding seat is hingedly connected to one end of a limiting ring, the other end of the limiting ring is hingedly connected to an adjusting oil cylinder, and the adjusting oil cylinder is hingedly connected to the second sliding seat.

[0007] The first sliding seat and the second sliding seat are fixedly connected to a ring rail, a filling sliding seat is slidingly connected on the ring rail, the filling sliding seat is slidingly connected to an extension filling pipe, the extension filling pipe extrudes filling mortar, and the extension filling pipe is limited by the limiting ring.

[0008] Preferably, the included angle between the first sliding seat and the second sliding seat is 180°.

[0009] Preferably, the second sliding seat is fixedly connected to a first motor at the bottom, the main shaft of the first motor is fixedly connected to a gear, the extension filling pipe is fixedly connected to a rack at the bottom, and the gear is engaged with the rack.

[0010] Preferably, the telescopic filling pipe is in a right-angled hollow pipe structure, and a strip-shaped extrusion hole is arranged on the side of the telescopic filling pipe.

[0011] Preferably, an avoiding groove is arranged on the inner arc surface of the limiting ring, a through groove is arranged on the upper side of the telescopic filling pipe, a sliding block is slidably connected in the through groove, a supporting spring is fixedly connected between the sliding block and the inner wall of one end of the through groove, a roller is rotatably connected on the upper side of the sliding block, and the roller can roll on the side of the limiting ring after passing through the avoiding groove.

[0012] A sliding block is slidably connected in the telescopic filling pipe, a guide rod is fixedly connected on the upper side of the sliding block, a first spring is fixedly connected between the guide rod and the telescopic filling pipe, and an inclined block is arranged on the bottom of the sliding block, and the inclined surface of the inclined block is in sliding contact with the upper side of the sliding block.

[0013] Preferably, an arc-shaped protrusion or a wavy surface structure is arranged on the rolling path of the roller.

[0014] The pipe segment deviation rectifying device provided by the application is suitable for the tunnel construction of a double-shield TBM, and the telescopic filling pipe is supported against the limiting ring. The filling of the mortar on the side of the double-shield TBM tunnel segment is carried out with the limiting ring as a reference. The telescopic filling pipe is slid on the ring rail through the filling sliding seat, and is moved from the maximum gap A to the minimum direction B. The thickness of the applied mortar gradually decreases, and the filling requirement between the adjacent double-shield TBM tunnel segments is adjusted according to the actual adjustment of the posture of the shield. The problem of the poor sealing of the water stop belt of the double-shield TBM tunnel segment caused by the uneven gap between the adjacent double-shield TBM tunnel segments during the adjustment of the posture is solved.

[0015] The roller rolls on the side of the limiting ring. In the initial position, the sliding block is close to the filling end of the telescopic filling pipe, and the corresponding sliding block is located at a high position. As the telescopic filling pipe is slid on the ring rail through the filling sliding seat, the distance between the limiting ring and the ring rail becomes smaller. The first spring pushes the sliding block to move leftward, so that the lower surface of the inclined block pushes the sliding block downward to move downward, and the cross-sectional size of the filling mortar passing through the telescopic filling pipe is reduced. Therefore, the amount of the mortar extruded from the filling end of the telescopic filling pipe is correspondingly reduced. The extrusion of the mortar is completely matched with the posture of the double-shield TBM tunnel segment after the adjustment of the posture, so that the thickness of the applied mortar is more matched, and the filling is ensured to be compact. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a basic structure schematic diagram of the application;

[0017] Figure 2 is a connection structure schematic diagram of the first sliding seat, the second sliding seat and half of the limiting ring of the application;

[0018] Figure 3 is Figure 2 is a local enlarged view of E in Fig.

[0019] Figure 4 is a structural schematic diagram of the telescopic filling pipe of the present application;

[0020] Figure 5 is Figure 4 is a local enlarged view at F in DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0022] Example 1

[0023] As shown in Figures 1-5 , the present application provides a segment deviation rectification device suitable for curved segment shield TBM tunnel construction, which comprises a shield body 1, a mounting plate 11 fixedly connected in the shield body 1, a plurality of hydraulic push rods 12 arranged in an annular array in the shield body 1, each hydraulic push rod 12 controlled by a posture correction system to have different telescopic amounts to play a deviation rectification role, the posture correction system selecting a corresponding complete set of technical equipment in the prior art according to the detected geology, mainly adjusting the telescopic amounts of different hydraulic push rods 12 to adjust the tunneling direction of the shield cutter head by monitoring the deviation of the shield direction from the predetermined direction, the mounting plate 11 being provided with a guide rail 13 on the inner arc surface, the guide rail 13 being slidably connected with a first sliding seat 14 and a second sliding seat 15, the included angle between the first sliding seat 14 and the second sliding seat 15 being 180°, the first sliding seat 14 and the second sliding seat 15 respectively driven to change the position on the guide rail 13 by a driving device, the driving device adopting a conventional power device, wherein one end of the first sliding seat 14 is hingedly connected with a limiting ring 2, the other end of the limiting ring 2 is hingedly connected with an adjusting oil cylinder 3, and the adjusting oil cylinder 3 is hingedly connected with the second sliding seat 15;

[0024] The first sliding seat 14 and the second sliding seat 15 are fixedly connected with a ring rail 16, a filling sliding seat 17 is slidably connected on the ring rail 16, the position is changed by a conventional power drive, the filling sliding seat 17 is slidably connected with a telescopic filling pipe 4, the telescopic filling pipe 4 extrudes filling mortar, and the telescopic filling pipe 4 is limited by the limiting ring 2.

[0025] In order to adjust the direction of the shield, the telescopic amounts of the hydraulic push rods 12 are in the annular direction, one of the hydraulic push rods 12 has the maximum telescopic amount, the telescopic amount of the hydraulic push rod 12 at the starting point is 180°, the hydraulic push rod 12 with the maximum telescopic amount can be in any direction of 12 o'clock, and at the same time, the double shield TBM tunnel segment 10 needs to be laid correspondingly, as shown in Figure 1As shown, the maximum gap A between the adjacent two double shield TBM tunnel segments also needs to be matched, to avoid causing the large joint gap of the double shield TBM tunnel segment 10, affecting the sealing, the first sliding seat 14 and the second sliding seat 15 are provided with the limiting ring 2, the second sliding seat 15 matches the position of the hydraulic push rod 12 with the maximum expansion amount, the limiting ring 2 and the shield body 1 and the mounting plate 11 are changed from parallel adaptability to have an angle, the telescopic filling pipe 4 is back to the limiting ring 2, the limiting ring 2 is used as a reference to fill the mortar on the side of the double shield TBM tunnel segment 10, the telescopic filling pipe 4 is slid on the ring rail 16 through the filling sliding seat 17, and is moved from the maximum gap A to the minimum direction B, and the mortar is applied to the side of the double shield TBM tunnel segment 10, the thickness of the applied mortar gradually decreases, the actual shield posture is adjusted, the joint filling requirement between the adjacent double shield TBM tunnel segments 10 is solved, and the problem of the sealing of the waterstop of the double shield TBM tunnel segment 10 is caused by the uneven gap between the adjacent double shield TBM tunnel segments 10 under the posture adjustment.

[0026] Specifically, the second sliding seat 15 is fixedly connected with the first motor 41 at the bottom, the main shaft of the first motor 41 is fixedly connected with the gear 42, the telescopic filling pipe 4 is fixedly connected with the rack 43 at the bottom, the gear 42 is engaged with the rack 43, and the first motor 41 is reversely rotated through the gear 42 and the rack 43, so that the telescopic filling pipe 4 is correspondingly expanded or contracted, and when the posture adjustment is not needed, the telescopic filling pipe 4 is stored between the adjacent two hydraulic push rods 12.

[0027] Specifically, the telescopic filling pipe 4 is in a right-angled hollow pipe structure, the side of the telescopic filling pipe 4 is provided with a strip-shaped extrusion hole 44, the telescopic filling pipe 4 is slid on the ring rail 16 through the filling sliding seat 17, the mortar extruded from the extrusion hole 44 by the existing pump is attached to the side of the double shield TBM tunnel segment 10, the splicing of the subsequent double shield TBM tunnel segment 10 is matched, and the sealing between the adjacent double shield TBM tunnel segments is increased.

[0028] Embodiment 2

[0029] On the basis of the embodiment 1, the prior art double shield TBM tunnel segment 10 is extruded and sealed by the side rubber strip, the gap is too large due to the posture adjustment of the double shield TBM tunnel segment 10, the inner arc surface of the limiting ring 2 is provided with an avoiding groove 45, the upper side of the telescopic filling pipe 4 is provided with a through groove 46, the sliding block 47 is slidably connected in the through groove 46, the support spring 48 is fixedly connected between the sliding block 47 and the inner wall of one end of the through groove 46, the upper side of the sliding block 47 is rotatably connected with the roller 49, the roller 49 can roll on the side of the limiting ring 2 after passing through the avoiding groove 45, the avoiding groove 45 makes the roller 49 pass from one side of the limiting ring 2 to the other side, so that the telescopic filling pipe 4 can be stored between the adjacent two hydraulic push rods 12.

[0030] A gate 5 is slidably connected inside the telescopic filling tube 4. A guide rod 51 is fixedly connected to the upper side of the gate 5. A first spring 52 is fixedly connected between the guide rod 51 and the telescopic filling tube 4. An inclined block 53 is provided at the bottom of the slider 47. The inclined surface of the inclined block 53 slides in contact with the upper side of the gate 5.

[0031] Compared to setting a control valve inside the telescopic filling tube 4, the control valve needs to match the position of the telescopic filling tube 4 to adjust the amount of extruded mortar to achieve the filling requirements in Example 1. In Example 2, the roller 49 rolls on the side of the limiting ring 2. In the initial position, the slider 47 is close to the filling end of the telescopic filling tube 4, and the corresponding gate 5 is in a high position. As the telescopic filling tube 4 slides on the ring rail 16 through the filling slide 17, the distance between the limiting ring 2 and the ring rail 16 becomes smaller and smaller. The corresponding first spring 52 pushes the slider 47 to move to the left. Figure 5 As shown), the lower part of the inclined block 53 pushes the gate plate 5 down, reducing the cross-sectional size of the mortar passing through the telescopic filling pipe 4. This reduces the amount of mortar squeezed out from the filling end of the telescopic filling pipe 4. The amount of mortar squeezed out is fully adapted to the posture of the double-shield TBM tunnel segment 10 after the posture adjustment, so that the thickness of the mortar coating is more matched and the filling is dense.

[0032] Furthermore, the limiting ring 2 is provided with arc-shaped protrusions 491 or a wave-like structure on the rolling path of the roller 49. When the roller 49 is limited by the limiting ring 2, due to the undulation of the arc-shaped protrusions 491, the slider 47 tends to slide to the left as a whole. When it encounters the arc-shaped protrusions 491, the slider 47 retracts slightly to the right. The first spring 52 raises the gate 5, so that the amount of mortar squeezed out varies, forming a wave-shaped mortar coating strip on the side of the double-shield TBM tunnel segment 10. This is similar to scraping out dense grooves for mortar, which is conducive to the technical requirement of squeezing and filling densely.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A segment correction device suitable for curved shield TBM tunnel construction, comprising a shield body (1), a fixed connection mounting plate (11) inside the shield body (1), and a plurality of hydraulic push rods (12) arranged in a ring array inside the shield body (1), each hydraulic push rod (12) being controlled by an attitude correction system to achieve a correction effect, characterized in that: The inner arc surface of the mounting plate (11) is provided with a guide rail (13). The first slide (14) and the second slide (15) are slidably connected on the guide rail (13). The first slide (14) and the second slide (15) are driven by a driving device to change their positions on the guide rail (13). The first slide (14) is hinged to one end of the limiting ring (2), and the other end of the limiting ring (2) is hinged to the adjusting cylinder (3). The adjusting cylinder (3) is hinged to the second slide (15). The first slide (14) and the second slide (15) are fixedly connected to the ring rail (16). The ring rail (16) is slidably connected to the filling slide (17). The filling slide (17) is slidably connected to the telescopic filling tube (4). The telescopic filling tube (4) squeezes out the filling mortar. The telescopic filling tube (4) is limited by the limiting ring (2). The included angle between the first slide (14) and the second slide (15) is (180)°; The inner arc surface of the limiting ring (2) is provided with a relief groove (45), and the upper side of the telescopic filling tube (4) is provided with a through groove (46). A slider (47) is slidably connected in the through groove (46). A support spring (48) is fixedly connected between the slider (47) and the inner wall of one end of the through groove (46). A roller (49) is rotatably connected to the upper side of the slider (47). After the roller (49) passes through the relief groove (45), it can roll on the side of the limiting ring (2). The telescopic filling tube (4) is slidably connected to a gate plate (5), and a guide rod (51) is fixedly connected to the upper side of the gate plate (5). A first spring (52) is fixedly connected between the guide rod (51) and the telescopic filling tube (4). An inclined block (53) is provided at the bottom of the slider (47), and the inclined surface of the inclined block (53) slides in contact with the upper side of the gate plate (5).

2. The segment correction device for curved shield TBM tunnel construction according to claim 1, characterized in that: The bottom of the second slide (15) is fixedly connected to the first motor (41), the main shaft of the first motor (41) is fixedly connected to the gear (42), and the bottom of the telescopic filling tube (4) is fixedly connected to the rack (43), with the gear (42) meshing with the rack (43).

3. The segment correction device for curved shield TBM tunnel construction according to claim 1, characterized in that: The telescopic filling tube (4) has a right-angled hollow tube structure, and strip-shaped extrusion holes (44) are provided on the side of the telescopic filling tube (4).

4. The segment correction device for curved shield TBM tunnel construction according to claim 1, characterized in that: The limiting ring (2) has an arc-shaped protrusion (491) or a wave-shaped structure on the rolling path of the roller (49).

Images