Device for quickly replacing damaged segment of shield tunnel and method thereof

Abstract

The application discloses a device for quickly replacing damaged pipe segments of a shield and a working method thereof, and belongs to the technical field of shield tunneling. The device comprises two frames (1), the frame (1) is used for movably abutting against undamaged pipe segments, and rails (2) are connected between the two frames (1); a replacement unit (6) comprises a rotary bearing mounting rack (7), a rotary bearing (8) and a fixing rack (9) which are sequentially arranged from front to back and the center of which penetrates through the rail (2); an axial oil cylinder (10) is connected between the frame (1) located at the rear and the fixing rack (9); a hydraulic motor (11) is arranged on the fixing rack (9), a pinion (12) on the hydraulic motor (11) is engaged with the rotary bearing (8); radial oil cylinders (13) are arranged on the rotary bearing mounting rack (7), and the piston rods of the two radial oil cylinders (13) are respectively connected with two ends of a V-shaped grabbing device (14). Compared with manual replacement, the device has the advantages of low replacement cost of damaged pipe segments, high safety, and short pipe segment replacement period.

Description

TECHNICAL FIELD

[0001] The application relates to a device for quickly replacing damaged segments of a shield and a method thereof, and belongs to the technical field of shield construction. BACKGROUND

[0002] With the wide application of shield construction, damaged segments and cracks may occur in shield tunnels during construction or maintenance, so that the damaged segments and cracks need to be replaced during shield tunnel construction inspection and later maintenance to effectively ensure the safe use of the shield tunnel. SUMMARY

[0003] The application provides a device for quickly replacing damaged segments of a shield, which can quickly replace damaged segments, prevent the damaged segments from falling off, and ensure the safety of the shield tunnel.

[0004] The application also provides a method for quickly replacing damaged segments of a shield, which can quickly replace damaged segments, prevent the damaged segments from falling off, ensure the safety of the shield tunnel, and avoid water inflow of the tunnel.

[0005] To solve the above technical problems, the application adopts the technical scheme that:

[0006] The application provides a device for quickly replacing damaged segments of a shield, which can quickly replace damaged segments, prevent the damaged segments from falling off, and ensure the safety of the shield tunnel.

[0007] Two frames are connected with a track, the track is provided with a track groove, the track groove is provided with an axial translation roller, and a center shaft is arranged in the middle of the axial translation roller.

[0008] The replacement unit comprises, from front to back, a rotary bearing mounting frame, a rotary bearing and a fixing frame which are sequentially arranged and whose centers penetrate the track, and the rotary bearing is rotationally mounted between the rotary bearing mounting frame and the fixing frame.

[0009] The center shaft is connected with the fixing frame, an axial oil cylinder is connected between the rear frame and the fixing frame.

[0010] A hydraulic motor is arranged on the fixing frame, and a pinion on the hydraulic motor is engaged with the rotary bearing.

[0011] The rotary bearing mounting frame is symmetrically provided with radial oil cylinders left and right, the piston rods of the two radial oil cylinders are connected with the two ends of a V-shaped grabbing device respectively, the bottom end of the grabbing device is used for grabbing the shield segment to be replaced, the front, rear, left and right of the V-shaped rod of the grabbing device are connected with vertical small foot oil cylinders, the piston rod at the bottom end of the small foot oil cylinder is connected with a small foot oil cylinder supporting shoe;

[0012] The front frame is provided with a traction plate for being connected with a tractor;

[0013] The periphery of the frame is provided with a plurality of center-symmetric parallel oil cylinders, the piston rods of the parallel oil cylinders are connected with trolley wheels which are convenient to move and are used for movably abutting against the undamaged segment ring.

[0014] The bottom end of the grabbing device is provided with a groove, a swing arm is movably connected in the groove, and the bottom end of the swing arm is connected with the shield segment to be replaced.

[0015] The sheet feeding machine is used for transmitting the shield segment to be replaced to the lower side of the grabbing device.

[0016] The frame is welded by H-shaped steel and steel plates.

[0017] The inner surface of the rotary bearing is provided with an annular rack which is engaged with the pinion.

[0018] The piston rod of the small foot oil cylinder is movably connected with the small foot oil cylinder supporting shoe through a joint.

[0019] The lower surface of the small foot oil cylinder supporting shoe is an arc which is matched with the contact surface of the shield segment to be replaced.

[0020] The small foot oil cylinders on the left side form a group, the small foot oil cylinders on the right side form another group, and the extension and contraction amounts of the small foot oil cylinders in the same group are synchronously adjusted.

[0021] The method of the device for quickly replacing a damaged shield segment according to the application comprises the following steps:

[0022] First step: grouting the ring area with damaged segments;

[0023] Second step: manually breaking the damaged segments and manually breaking the radial H area of the damaged segments;

[0024] Third step: dragging the device for quickly replacing a damaged shield segment to the segment ring area with damaged segments (23) by using a tractor, adjusting the stroke of the parallel oil cylinders to firmly fix the trolley wheels in the segment damage area;

[0025] Fourth step: adopt the sheet feeder to transport the shield segment to be replaced to the lower side of the grabbing device, make the grabbing device translate and be located directly below the shield segment to be replaced by adjusting the stroke of the axial oil cylinder, and make the grabbing device up and down displacement and grab the shield segment to be replaced by adjusting the stroke of the radial oil cylinder;

[0026] Fifth step: adjust the stroke of the small foot oil cylinder, tilt and insert the shield segment to be replaced into the radial H area;

[0027] Sixth step: adjust the stroke of the small foot oil cylinder again and make the shield segment to be replaced horizontal, finally adjust the stroke of the radial oil cylinder, move the shield segment to be replaced upwards and assemble to the segment ring, and inject the mortar after the assembled shield segment to be replaced.

[0028] The radial H area is the radial area of the damaged segment, which is used for facilitating the assembly of the shield segment to be replaced.

[0029] Advantages: compared with the prior art, the present application has the following advantages:

[0030] Compared with manual replacement, the present application has low cost, high safety and short segment replacement period.

[0031] The device for quickly replacing the damaged shield segment of the present application can quickly replace the damaged segment, prevent the damaged segment from falling off, and ensure the safety of the shield tunnel.

[0032] The method for quickly replacing the damaged shield segment of the present application can quickly replace the damaged segment, prevent the damaged segment from falling off, ensure the safety of the shield tunnel, and avoid water inflow of the tunnel. DETAILED DESCRIPTION

[0033] Figure 1 is a structural schematic diagram of the present application;

[0034] Figure 2 is Figure 1 an enlarged view of the replacement unit in

[0035] Figure 3 is Figure 1 a front view of

[0036] Figure 4 is Figure 3 a side view of

[0037] Figure 5 is Figure 4 an enlarged view of the replacement unit in

[0038] Figure 6 is Figure 4 a sectional view of

[0039] Figure 7is a schematic diagram of the first step of the method of the present application;

[0040] Figure 8 is a schematic diagram of the second step of the method of the present application;

[0041] Figure 9 is a schematic diagram of the third step of the method of the present application;

[0042] Figure 10 is a schematic diagram of the fourth step of the method of the present application;

[0043] Figure 11 is a schematic diagram of the fifth step of the method of the present application;

[0044] Figure 12 is a schematic diagram of the sixth step of the method of the present application;

[0045] Figure 13 is Figure 11 an enlarged view of the middle swing arm. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. The specific examples described herein are only used to explain the present application and do not limit the present application.

[0047] As Figure 1 shown, the device for quickly replacing a damaged segment of a shield tunnel of the present embodiment can quickly replace the damaged segment 23 and prevent the damaged segment 23 from falling and water from entering the tunnel. The present embodiment mainly comprises a tractor 18, a traction plate 17, a frame 1, a parallel oil cylinder 19, a trolley wheel 20, a fixing frame 9, a rotary bearing 8, a rotary bearing mounting frame 7, an axial oil cylinder 10, a radial oil cylinder 13, a small foot oil cylinder 15, a small foot oil cylinder supporting shoe 16, a grabbing device 14, an axial translation roller 4, a hydraulic motor 11 and a pinion 12.

[0048] The traction vehicle 18 can advance in the tunnel without laying tracks. The traction plate 17 is a connecting plate connecting the frame 1 of the traction vehicle 18. The frame 1 is welded by H-shaped steel and steel plates, which is simple in structure and low in cost. The parallel oil cylinders 19 (two oil cylinders in parallel) are welded on the frame 1 of the trolley at a certain angle, and the trolley wheels 20 are installed on the parallel oil cylinders 19. Thus, the position of the frame 1 can be adjusted by adjusting the extension amount of the parallel oil cylinders 19, so as to ensure that the center of the assembled structure coincides with the center of the tunnel, and the new segment is accurately assembled, and the segment ring of the area where the segment is replaced is more reliable. The two shafts on the fixed frame 9 are installed with the axial translation rollers 4, which are in the track grooves 3 on the sides of the frame 1. Then the fixed frame 9 can adjust the axial oil cylinder 10 of the frame 1 to slide axially. The slewing bearing 8 is connected to the fixed frame 9 by screws, and the slewing bearing mounting frame 7 is also installed on the slewing bearing 8 by screws. The hydraulic motor 11 is installed on the fixed frame 9, and the pinion 12 on the hydraulic motor 11 is engaged with the slewing bearing 8. Thus, the slewing bearing mounting frame 7 can rotate. The radial oil cylinder 13 is installed on the slewing bearing mounting frame 7 by screws, and the gripping device 14 is connected to the piston rod of the radial oil cylinder 13 by a pin shaft. Thus, the gripping device 14 can move the segment radially. The small foot oil cylinder 15 is welded on the gripping device, so that the extension amount of the small foot oil cylinder 15 can be adjusted to adjust the angle of the segment for assembly. The small foot oil cylinder supporting shoe 16 is connected to the piston rod of the small foot oil cylinder 15 by a joint, which is more convenient and safe for segment clamping.

[0049] Specifically, as shown in Figures 2-6 A device for quickly replacing damaged segments of a shield tunnel, comprising: two frames 1, the frame 1 is used to abut against the undamaged segment ring;

[0050] The two frames 1 are connected with a track 2, the track 2 is provided with a track groove 3, the track groove 3 is provided with an axial translation roller 4, and the axial translation roller 4 is provided with a center shaft 5;

[0051] The replacing unit 6 comprises, from front to back, a slewing bearing mounting frame 7, a slewing bearing 8 and a fixed frame 9 which are sequentially arranged and the center shaft 5 penetrates through the track 2, and the slewing bearing 8 is rotatably installed between the slewing bearing mounting frame 7 and the fixed frame 9;

[0052] The center shaft 5 is connected with the fixed frame 9, and the axial oil cylinder 10 is connected between the rear frame 1 and the fixed frame 9;

[0053] The fixed frame 9 is provided with a hydraulic motor 11, and the pinion 12 on the hydraulic motor 11 is engaged with the slewing bearing 8;

[0054] Radial cylinders 13 are symmetrically arranged on the left and right sides of the slewing bearing mounting bracket 7. The piston rods of the two radial cylinders 13 are respectively connected to the two ends of the V-shaped gripping device 14. The bottom end of the gripping device 14 is used to grip the shield tunnel segment to be replaced. Vertical small foot cylinders 15 are connected to the front, back, left and right sides of the V-shaped rod of the gripping device 14. The piston rod at the bottom of the small foot cylinder 15 is connected to the small foot cylinder support shoe 16.

[0055] A towing plate 17 for connecting to the tractor 18 is provided on the front frame 1;

[0056] The frame 1 is provided with several parallel hydraulic cylinders 19 arranged symmetrically around its perimeter. The piston rods of the parallel hydraulic cylinders 19 are connected to the trolley wheels 20, which facilitate movement and are used to move against the undamaged segment rings.

[0057] The slice feeder 22 is used to transfer the shield tunnel segment to be replaced to the area below the gripping device 14.

[0058] Frame 1 is constructed by welding H-beams and steel plates.

[0059] The inner surface of the slewing bearing 8 is provided with an annular rack 25 that meshes with the pinion 12.

[0060] The lower surface of the small foot cylinder support shoe 16 is an arc shape adapted to the contact surface of the shield tunnel segment to be replaced.

[0061] The small foot cylinders 15 located on the left side form one group, and the small foot cylinders 15 located on the right side form another group. The extension and retraction of the small foot cylinders 15 in the same group are adjusted synchronously.

[0062] like Figure 2 As shown, the piston rod of the small foot cylinder 15 is movably connected to the small foot cylinder support shoe 16 via a joint. Specifically, the bottom end of the piston rod of the small foot cylinder 15 is spherical and is movably located in the groove at the top of the small foot cylinder support shoe 16, that is, the piston rod of the small foot cylinder 15 can rotate in the groove.

[0063] like Figure 13 As shown, the bottom end of the gripping device 14 is provided with a groove, and a swing arm 21 is movably connected in the groove. The bottom end of the swing arm 21 is connected to the shield segment to be replaced. Specifically, a ball joint groove and a spherical head of the segment screw are used for connection, so that the angle of the shield segment to be replaced can be adjusted, which is equivalent to a joint bearing.

[0064] A method for quickly replacing damaged tunnel segments in a tunnel boring machine includes the following steps:

[0065] like Figure 7 The diagram shown is for the grouting of the 23rd ring area of ​​the damaged segment. This is the first step, which makes the damaged segment more secure and prevents water from entering the tunnel when replacing the segment.

[0066] likeFigure 8 As shown in the second step, the damaged segment 23 is manually broken, and the radial H area 24 of the damaged segment 23 is manually broken.

[0067] As shown in the third step, the fast replacement shield damaged segment device is pulled to the segment ring area with the damaged segment 23 by the tractor 18, the stroke of the parallel oil cylinder 19 is adjusted to firmly fix the trolley wheel 20 at the damaged segment area. Figure 9

[0068] As shown in the fourth step, the to-be-replaced shield segment is transported to the lower side of the grabbing device 14 by the segment feeder 22, the stroke of the axial oil cylinder 10 is adjusted to make the grabbing device 14 translate and be located directly below the to-be-replaced shield segment, and the stroke of the radial oil cylinder 13 is adjusted to make the grabbing device 14 up and down and grab the to-be-replaced shield segment. Figure 10

[0069] As shown in the fifth step, the stroke of the small foot oil cylinder 15 is adjusted to tilt and insert the to-be-replaced shield segment into the radial H area 24. The radial H area 24 is a radial area of the damaged segment 23, which is used to facilitate the assembly of the to-be-replaced shield segment. Figure 11

[0070] As shown in the sixth step, the stroke of the small foot oil cylinder 15 is adjusted again to make the to-be-replaced shield segment horizontal, and finally the stroke of the radial oil cylinder 13 is adjusted to move the to-be-replaced shield segment upwards and assemble it to the segment ring, and the mortar is injected after the to-be-replaced shield segment is assembled. Figure 12

[0071] The electrical elements in the embodiment are all powered by a power supply, which can be a commercial power supply or a battery.

[0072] The construction method in the embodiment is a conventional construction method, and the materials can be obtained from commercial channels unless otherwise specified.

[0073] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.​​​​

Claims

1. A method for rapidly replacing damaged tunnel segments in a tunnel boring machine (TBM), based on the device for rapidly replacing damaged TBM segments, characterized in that... The device based on rapid replacement of damaged tunnel segments includes: two frames (1), which are used to movably hold the undamaged tunnel segment ring; A track (2) is connected between the two frames (1), a track groove (3) is provided in the track (2), an axial translation roller (4) is provided in the track groove (3), and a central shaft (5) is provided in the middle of the axial translation roller (4). The replacement unit (6) includes a slewing bearing mounting frame (7), a slewing bearing (8), and a fixing frame (9) arranged sequentially from front to back and passing through the center of the track (2). The slewing bearing (8) is rotatably mounted between the slewing bearing mounting frame (7) and the fixing frame (9). The central shaft (5) is connected to the fixed frame (9), and an axial hydraulic cylinder (10) is connected between the frame (1) and the fixed frame (9) located at the rear. A hydraulic motor (11) is provided on the fixed frame (9), and the pinion (12) on the hydraulic motor (11) meshes with the rotary bearing (8); The slewing bearing mounting bracket (7) is symmetrically provided with radial cylinders (13). The piston rods of the two radial cylinders (13) are respectively connected to the two ends of the V-shaped gripping device (14). The bottom end of the gripping device (14) is used to grip the shield tunnel segment to be replaced. The front, back, left and right sides of the V-shaped rod of the gripping device (14) are all connected with vertical small foot cylinders (15). The piston rod at the bottom end of the small foot cylinder (15) is connected to the small foot cylinder support shoe (16). The frame (1) located at the front is provided with a towing plate (17) for connecting to the tractor (18). The frame (1) is provided with a number of parallel hydraulic cylinders (19) arranged symmetrically around its perimeter. The piston rod of the parallel hydraulic cylinder (19) is connected to a trolley wheel (20) for easy movement and for moving against the undamaged tube ring. The construction method for this rapid replacement device for damaged tunnel segments includes: Step 1: Grout the ring area with the damaged segment (23); Step 2: Manually break the damaged segment (23) and manually break the radial H area (24) of the damaged segment (23); Step 3: Use a tractor (18) to drag the device for quickly replacing the damaged tunnel segment to the segment ring area with the damaged segment (23), and adjust the stroke of the parallel cylinder (19) to firmly fix the trolley wheel (20) in the damaged segment area. Step 4: Use a feeder (22) to transport the shield tunnel segment to be replaced to the bottom of the grabbing device (14). Adjust the stroke of the axial cylinder (10) to make the grabbing device (14) move horizontally and be located directly below the shield tunnel segment to be replaced. Adjust the stroke of the radial cylinder (13) to make the grabbing device (14) move up and down and grab the shield tunnel segment to be replaced. Step 5: Adjust the stroke of the small foot cylinder (15), tilt the shield tunnel segment to be replaced and insert it into the radial H area (24). The radial H area (24) is the radial area of ​​the damaged segment (23) to facilitate the assembly of the shield tunnel segment to be replaced. Step 6: Adjust the stroke of the small foot cylinder (15) and make the shield segment to be replaced horizontal. Finally, adjust the stroke of the radial cylinder (13), move the shield segment to be replaced up and assemble it onto the segment ring, and inject mortar after assembling the shield segment to be replaced.

2. The construction method of the device for quickly replacing damaged tunnel segments according to claim 1, characterized in that, The bottom end of the gripping device (14) is provided with a groove, and a swing arm (21) is movably connected in the groove. The bottom end of the swing arm (21) is connected to the shield tunnel segment to be replaced.

3. The construction method of the device for quickly replacing damaged tunnel segments according to claim 1, characterized in that, The feeder (22) is used to transfer the tunnel segment to be replaced to the area below the gripping device (14).

4. The construction method of the device for quickly replacing damaged tunnel segments according to claim 1, characterized in that, The frame (1) is made of H-beams and steel plates welded together.

5. The construction method of the device for quickly replacing damaged tunnel segments according to claim 1, characterized in that, The inner surface of the slewing bearing (8) is provided with an annular rack (25) that meshes with the pinion (12).

6. The construction method of the device for quickly replacing damaged tunnel segments of a shield tunnel according to claim 1, characterized in that, The piston rod of the small foot cylinder (15) is connected to the small foot cylinder support shoe (16) by a joint.

7. The construction method of the device for quickly replacing damaged tunnel segments according to claim 1, characterized in that, The lower surface of the small foot cylinder support shoe (16) is an arc shape that matches the contact surface of the shield tunnel segment to be replaced.

8. The construction method of the device for quickly replacing damaged tunnel segments according to claim 1, characterized in that, The small foot cylinders (15) located on the left side form one group, and the small foot cylinders (15) located on the right side form another group. The extension and retraction of the small foot cylinders (15) in the same group are adjusted synchronously.

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