Advanced grouting device for keeping surrounding rock stable in shield underground butt joint

Abstract

An advanced grouting device for keeping surrounding rock stable in shield underground butt joint relates to the technical field of shield construction advanced grouting, a rotating seat is rotated to a mounting position relative to a supporting seat through a rotating seat driving mechanism under the action of a rotating connecting mechanism, and an inserting rod moves inwards under the action of an inserting rod driving mechanism; the inserting rod is in a hidden state relative to the mounting base, the advance drilling machine is placed on the mounting base, then the rotating base is rotated to be away from the mounting position through the rotating base driving mechanism, and the inserting rod driving mechanism drives the inserting rod to extend outwards to be inserted into a coupling mechanism of the advance drilling machine to achieve rotating connection of the advance drilling machine and the mounting base. The rotating seat driving mechanism drives the rotating seat to rotate to the corresponding advanced grouting pipe, the angle driving mechanism drives the advanced drilling machine to rotate relative to the mounting seat, and operation of the advanced drilling machine is facilitated by adjusting the pitching angle of the advanced drilling machine. Rapid installation operation of the advanced drilling machine is achieved, and operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of advance grouting in shield construction, and in particular to an advance grouting device for maintaining surrounding rock stability by butting in the ground of a shield. Background Art

[0002] In recent years, with the iteration of shield equipment and the continuous emergence of new processes and technologies, more and more cross-river and cross-sea tunnels are being planned. The coupling of extreme conditions such as ultra-large diameter, ultra-high water pressure, and ultra-long distance has made shield underground docking technology a new trend in the construction of ultra-long distance submarine shield tunnels. In extreme environments, instability of the excavation face will lead to serious property losses and casualties. Therefore, maintaining the stability of the excavation face when the shield is docked is the key to ensuring the safe construction of submarine shield tunnels.

[0003] When the shield machine is dismantled and an air-facing surface is generated, the deformation of the surrounding rock increases suddenly, and the change in the arch bottom settlement is the most significant. It is necessary to pre-reinforce the stratum in advance. When performing advance grouting, the advance drill rig needs to be installed on the rotating seat. Then the rotating seat rotates to drive the advance drill rig to the position of the advance grouting pipe, so that the advance drill rig is aligned with the advance grouting pipe. However, when the advance drill rig is fixedly connected to the rotating seat, multiple bolts are usually used for fixed connection. At the same time, the angle of the advance drill rig needs to be adjusted, and the operation is relatively complicated. In order to facilitate the installation of the advance drill rig, a shield underground docking and surrounding rock stability-maintaining advance grouting device is provided. Summary of the invention

[0004] In order to overcome the deficiencies of the above technologies, the present invention provides an advance grouting device which is convenient for installing an advance drilling rig and provides shield underground docking to maintain the stability of the surrounding rock.

[0005] The technical solution adopted by the present invention to overcome the technical problems is: A shield machine in-ground butt joint and surrounding rock stability-maintaining advanced grouting device, comprising a cutterhead installed at the front end of a shield machine, a fixing frame arranged in the inner cavity of the shield machine, and N advanced grouting pipes installed on the fixing frame at even intervals along the circumferential direction, and also comprising: A mounting frame installed in the inner cavity of the shield machine; The support seat is fixed to the front end of the mounting frame, and an advance drilling rig mounting position is arranged on the support seat, and no advance grouting pipe is arranged at the front end of the advance drilling rig mounting position; The rotating seat is a circular ring-shaped mechanism, which is rotatably mounted on the front end of the supporting seat through a rotating connection mechanism, and the axis of the rotating seat is arranged in the horizontal direction; The rotating seat driving mechanism is arranged in the supporting seat and is used to drive the rotating seat to rotate; The mounting seat is arranged on the rotating seat in the vertical direction, and a sealed cavity is arranged in the mounting seat, and the left and right ends of the cavity are respectively inserted with insertion rods which are slidably inserted in the horizontal direction; The advance drilling rig has a shaft connection mechanism at its lower end; The plug rod driving mechanism is arranged in the rotating seat and is used to drive the plug rod to slide in the horizontal direction. When the rotating seat rotates to the installation position, the plug rod driving mechanism drives the plug rod to move inward to be located in the cavity. When the rotating seat rotates away from the installation position, the plug rod driving mechanism drives the plug rod to extend outward and insert into the shaft connection mechanism of the advance drilling rig to realize the rotation connection between the advance drilling rig and the mounting seat, and The angle driving mechanism is arranged on the mounting seat and is used for adjusting the elevation angle of the initial state of the advance drilling rig to the horizontal direction.

[0006] Furthermore, the above-mentioned rotating connection mechanism includes a flange arranged at the front end of the support seat along the circumferential direction and a slide groove I arranged on the inner wall of the rotating seat along the circumferential direction and matching the flange, and the flange is embedded in the slide groove I.

[0007] Furthermore, the above-mentioned rotating seat driving mechanism includes a motor I installed in the support seat, a gear I coaxially installed on the output shaft of the motor I, and an internal gear arranged in the rotating seat along the circumferential direction. The axis of the motor I is arranged in the horizontal direction, the internal gear is arranged coaxially with the rotating seat, and the gear I is meshed with the internal gear.

[0008] Furthermore, the above-mentioned advanced drilling rig installation position is located at the bottom of the support seat.

[0009] Furthermore, the above-mentioned axial connection mechanism includes support rods respectively arranged on the left and right sides of the bottom of the advance drilling rig in the vertical direction, and a gear II is arranged at the bottom of the support rod. The axis of the gear II is arranged in the horizontal direction, and a mounting hole is axially arranged on the gear II. The inner diameter of the mounting hole matches the outer diameter of the insertion rod. When the rotating seat is rotated to the installation position, the two gears II are respectively placed on the left and right sides of the mounting seat. When the rotating seat is rotated away from the installation position, the insertion rod driving mechanism drives the insertion rod to extend outward and insert into the mounting hole of the corresponding gear II on the same side.

[0010] Furthermore, the above-mentioned rod driving mechanism includes a slide bar installed horizontally in the cavity, two slide plates, a slide groove II arranged in the mounting seat along the vertical direction, and a slide block slidably installed in the slide groove II, the axis of the slide bar is horizontally arranged in the left and right directions, the slide plate is slidably installed on the slide bar along the axial direction of the slide bar, the inner end of the insert rod is fixed to the outer end of the slide plate corresponding to the same side, and the left and right sides of the upper end of the slide plate are respectively hingedly installed with connecting rods, and the head end of the connecting rod is hingedly connected to the slide plate corresponding to the same side, the spring I is located in the slide groove II, the axial direction of the spring I is arranged along the vertical direction, one end of the spring I is connected to the mounting seat, and the other end thereof is connected to the slide block. When the spring I is in a free state, the slide block moves down to the lower point position, and the slide block slides inwardly to retract the insert rod into the cavity, and the outer end surface of the insert rod is located inside the side end surface of the mounting seat. When the rotating seat rotates away from the mounting position, the synchronous driving mechanism drives the slide block to move up, and the slide block slides outwardly to push the insert rod out.

[0011] Furthermore, the above-mentioned angle driving mechanism includes a bracket installed on the mounting seat, a rotating shaft I rotatably installed on the bracket, and a motor II installed on the bracket. The axis of the rotating shaft I is arranged in the horizontal direction, the rotating shaft I is coaxially connected with the output shaft of the motor II, and the gear III is coaxially installed on the head end of the rotating shaft I. When the advance drilling rig is rotationally connected with the mounting seat through the shaft connection mechanism, the gear III is meshed with the gear II.

[0012] Further, the synchronous drive mechanism includes a slide groove III arranged at the bottom of the mounting seat in the vertical direction, a push rod slidably installed in the slide groove III in the vertical direction, a rack I installed at the bottom of the push rod in the horizontal direction, a slide groove VI arranged in the rotating seat in the horizontal direction, a rack II slidably installed in the slide groove VI, and an extrusion rod slidably inserted in the rotating seat in the vertical direction, a gear V is rotatably installed in the rotating seat, the gear V is located between the rack I and the rack II, the upper end of the gear is meshed with the rack I, and the lower end of the gear V is meshed with the rack II, the head end of the push rod is provided with a guide inclined surface III, the lower end of the slider is in sliding friction contact with the guide inclined surface III, the spring III is arranged in the horizontal direction, and the spring III One end of the support seat is connected to the rotating seat, and the other end of the support seat is connected to the push rod. The head end of the rack II is provided with a guide slope III. The head end of the extrusion rod is in sliding and frictional contact with the guide slope III. The lower end of the extrusion rod is provided with an arc chamfer. The head end of the support seat is horizontally installed with an arc-shaped arc plate. When the rotating seat rotates to the installation position, the arc chamfer of the extrusion rod is in sliding and frictional contact with the arc surface of the arc plate. The extrusion rod slides upward under the extrusion force and pushes the rack II to slide through the guide slope III. The gear V drives the rack I to slide in the opposite direction and compresses the spring III. The spring I pulls the slider down. When the spring III is in a free state, it pushes the push rod to move until the slider is driven upward by the guide slope III and the spring I is stretched.

[0013] In order to achieve the locking of the advanced drilling rig connection, it also includes a pushing frame arranged at the outer end of the slider in the horizontal direction, a slide groove IV arranged in the pushing frame in the horizontal direction, a vertical plate slidably installed in the slide groove IV through a slide rail, a slide groove V arranged in the vertical plate in the vertical direction, a fixed block slidably installed in the slide groove V, and a pressing block horizontally inserted in the vertical plate. The front end of the mounting seat is provided with a card slot matching the vertical plate, the lower end of the card slot is provided with a slot, the upper end of the fixed block is provided with a guide inclined surface I, and the lower end thereof is provided with a guide inclined surface II. A spring II is arranged in the slide groove V, the upper end of which is connected with the vertical plate, and the lower end thereof is connected with the fixed block. The guide inclined surface I is in sliding frictional contact with the inner side end of the pressing block. When the slider moves up to the upper dead point position, the vertical plate is pushed into the card groove, and the spring II pushes the lower end of the fixed block to insert into the slot. When the pressing block is pushed inward, the pressing block drives the fixed block to move up through the guide inclined surface I to disengage from the slot and compress the spring II.

[0014] In order to lock the position of the advance drilling rig, it also includes N positioning seats arranged on the outer wall of the support seat along the circumferential direction, positioning grooves arranged in the positioning seats along the horizontal direction, a positioning plate slidably installed in the rotating seat along the horizontal direction, and a rotating shaft II rotatably installed in the rotating seat. The size of the positioning plate matches the positioning groove, and the side end of the positioning plate is provided with a plurality of tooth grooves along its length. A bevel gear I is installed on the rotating shaft I, a bevel gear II is installed on the upper end of the rotating shaft II, and a gear IV is installed on the lower end of the rotating shaft II. The bevel gear I is meshed with the bevel gear II, and the gear IV is meshed with the tooth groove of the positioning plate. When the rotating seat rotates to the point where the advance drilling rig is facing a front grouting pipe and the motor II rotates to adjust the angle of the advance drilling rig in the horizontal direction, the positioning plate extends from the rotating seat and is inserted into the positioning groove of the corresponding positioning seat.

[0015] The beneficial effects of the present invention are: 1. When installing the advance drilling rig, the advance drilling rig is transported to the installation position by means of transportation equipment, the rotating seat driving mechanism rotates the rotating seat away from the installation position, and the plug-in rod driving mechanism drives the plug-in rod to extend outward and insert into the shaft connection mechanism of the advance drilling rig to realize the rotational connection between the advance drilling rig and the installation seat, thereby realizing the rapid installation of the advance drilling rig.

[0016] 2. The angle driving mechanism drives the advance drilling rig to rotate relative to the mounting seat, and the advance drilling rig is conveniently adjusted to align with the corresponding advance grouting pipe by adjusting its pitch angle, thereby improving the convenience of adjusting the angle of the advance drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the present invention in use; Figure 2 It is a structural schematic diagram of the rotating seat part of the present invention; Figure 3 It is a structural schematic diagram of the mounting seat of the present invention; Figure 4 It is a cross-sectional structural diagram of the mounting seat of the present invention; Figure 5 It is a structural diagram of the locking mechanism of the present invention; Figure 6 It is a cross-sectional structural diagram of the vertical plate portion of the present invention; Figure 7 A schematic diagram of the installation of the positioning seat of the present invention; Figure 8 for Figure 7 A magnified view of part A in FIG. Fig. 9 It is a structural diagram of the positioning plate part of the present invention; In the figure, 1. shield machine, 2. cutterhead, 3. fixed frame, 4. advanced grouting pipe, 5. mounting frame, 6. rotating seat, 7. advanced drilling machine, 8. mounting seat, 9. positioning seat, 10. supporting seat, 11. motor I, 12. gear I, 13. flange, 14. slideway I, 15. internal gear, 16. support rod, 17. gear II, 18. mounting hole, 19. bracket, 20. motor II, 21. gear III, 22. plug rod, 23. cavity, 24. slideway II, 25. slide rod, 26. slide plate, 27. slide block, 28. push frame, 29. connecting rod, 30. vertical plate, 31. rotating shaft I, 32. Bevel gear Ⅰ, 33. Rotating shaft Ⅱ, 34. Gear Ⅳ, 35. Spring Ⅰ, 36. Bevel gear Ⅱ, 37. Slide Ⅲ, 38. Slot, 39. Press block, 40. Slot, 41. Slide Ⅳ, 42. Slide rail, 43. Slide Ⅴ, 44. Spring Ⅱ, 45. Fixed block, 46. Guide slope Ⅰ, 47. Guide slope Ⅱ, 48. Push rod, 49. Guide slope Ⅲ, 50. Rack Ⅰ, 51. Spring Ⅲ, 52. Gear Ⅴ, 53. Slide Ⅵ, 54. Rack Ⅱ, 55. Guide slope Ⅲ, 56. Extrusion rod, 57. Arc chamfer, 58. Positioning plate, 59. Arc plate, 60. Positioning groove. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 To Attachment Fig. 9 The present invention is further described.

[0019] As attached Figure 1As shown, a shield underground docking and surrounding rock stability maintaining advance grouting device comprises a cutter head 2 installed at the front end of the shield machine 1, a fixing frame 3 arranged in the inner cavity of the shield machine 1, and N advance grouting pipes 4 evenly spaced along the circumferential direction and installed on the fixing frame 3. It also includes: a mounting frame 5 installed in the inner cavity of the shield machine 1; a support seat 10 fixed to the front end of the mounting frame 5, an advance drilling rig mounting position is arranged on the support seat 10, and no advance grouting pipe 4 is arranged at the front end of the advance drilling rig mounting position; a rotating seat 6, which is a circular ring mechanism, which is rotatably installed at the front end of the supporting seat 10 through a rotating connection mechanism, and the axis of the rotating seat 6 is arranged along the horizontal direction; a rotating seat driving mechanism, which is arranged in the supporting seat 10, and is used to drive the rotating seat 6 to rotate; a mounting seat 8, which is arranged along the vertical direction. It is arranged on the rotating seat 6 in the straight direction, and a closed cavity 23 is arranged in the mounting seat 8, and a plug rod 22 is inserted into the left and right ends of the cavity 23 for sliding in the horizontal direction; the advance drilling rig 7 is provided with an axial connection mechanism at its lower end; the plug rod driving mechanism is arranged in the rotating seat 6, and is used to drive the plug rod 22 to slide in the horizontal direction. When the rotating seat 6 is rotated to the mounting position, the plug rod driving mechanism drives the plug rod 22 to move inward to be located in the cavity 23. When the rotating seat 6 is rotated away from the mounting position, the plug rod driving mechanism drives the plug rod 22 to extend outward and be inserted into the axial connection mechanism of the advance drilling rig 7 to realize the rotational connection between the advance drilling rig 7 and the mounting seat 8, and the angle driving mechanism is arranged on the mounting seat 8, and is used to adjust the elevation angle of the initial state of the advance drilling rig 7 to the horizontal direction. When in use, the rotating seat driving mechanism rotates the rotating seat 6 to the installation position relative to the support seat 10 under the action of the rotating connection mechanism, and the plugging rod 22 moves inward under the action of the plugging rod driving mechanism, and the plugging rod 22 is hidden relative to the mounting seat 8, and the advanced drilling rig 7 is placed at the mounting seat 8. Then, the rotating seat driving mechanism rotates the rotating seat 6 away from the installation position, and the plugging rod driving mechanism drives the plugging rod 22 to extend outward and insert into the shaft connection mechanism of the advanced drilling rig 7 to realize the rotation connection between the advanced drilling rig 7 and the mounting seat 8. The rotating seat driving mechanism drives the rotating seat 6 to rotate to the corresponding advanced grouting pipe 4, and the angle driving mechanism drives the advanced drilling rig 7 to rotate relative to the mounting seat 8, and the operation of the advanced drilling rig 7 is facilitated by adjusting its pitch angle. The rapid installation operation of the advanced drilling rig 7 is realized, and the operation efficiency is improved.

[0020] In one embodiment of the present invention, as shown in the attached Figure 2 As shown, the rotating connection mechanism includes a flange 13 arranged at the front end of the support seat 10 along the circumferential direction and a slide groove Ⅰ 14 arranged on the inner wall of the rotating seat 6 along the circumferential direction and matching the flange 13, and the flange 13 is embedded in the slide groove Ⅰ 14. The rotating seat 6 is rotatably connected with the flange 13 of the supporting seat 10 through the slide groove Ⅰ 14, with a simple structure and reliable operation.

[0021] In one embodiment of the present invention, as shown in the attached Figure 2As shown, the rotating seat driving mechanism includes a motor Ⅰ 11 installed in the support seat 10, a gear Ⅰ 12 coaxially installed on the output shaft of the motor Ⅰ 11, and an internal gear 15 arranged in the rotating seat 6 along the circumferential direction. The axis of the motor Ⅰ 11 is arranged in the horizontal direction, the internal gear 15 is arranged coaxially with the rotating seat 6, and the gear Ⅰ 12 is meshed with the internal gear 15. The motor Ⅰ 11 rotates to drive the gear Ⅰ 12 to rotate. Since the gear Ⅰ 12 is meshed with the internal gear 15, the rotating seat 6 is driven to rotate, so that the advanced drilling machine 7 rotates to the corresponding advanced grouting pipe 4.

[0022] In one embodiment of the present invention, the installation position of the advance drilling rig is located at the bottom of the support seat 10. The advance drilling rig 7 is connected to the rotating seat 6 from the bottom of the shield machine 1, which is easy to operate and improves the assembly efficiency.

[0023] In one embodiment of the present invention, as shown in the attached Figure 3 As shown, the shaft connection mechanism includes a support rod 16 respectively arranged on the left and right sides of the bottom of the advance drilling machine 7 in the vertical direction, a gear II 17 is arranged at the bottom of the support rod 16, the axis of the gear II 17 is arranged in the horizontal direction, and the gear II 17 is axially provided with a mounting hole 18, the inner diameter of the mounting hole 18 matches the outer diameter of the plug rod 22, when the rotating seat 6 rotates to the installation position, the two gears II 17 are respectively placed on the left and right sides of the mounting seat 8, when the rotating seat 6 rotates away from the installation position, the plug rod driving mechanism drives the plug rod 22 to extend outward and insert into the mounting hole of the corresponding gear II 17 on the same side. By setting the plug rod driving mechanism to drive the plug rod 22 to extend and retract along its axial direction, the mounting hole 18 in the gear II 17 arranged at the lower end of the advance drilling machine 7 can be quickly shaft-connected, and installation and disassembly are convenient.

[0024] In one embodiment of the present invention, as shown in the attached Figure 4As shown, the rod driving mechanism includes a slide bar 25 horizontally installed in the cavity 23, two slide plates 26, a slide groove II 24 arranged in the mounting seat 8 along the vertical direction, and a slider 27 slidably installed in the slide groove II 24. The axis of the slide bar 25 is horizontally arranged in the left-right direction, and the slider 26 is slidably installed on the slide bar 25 along the axial direction of the slide bar 25. The inner end of the insertion rod 22 is fixed to the outer end of the corresponding slide plate 26 on the same side. The left and right sides of the upper end of the slider 27 are respectively hingedly installed with connecting rods 29, and the head end of the connecting rod 29 is hingedly connected to the corresponding slide plate 26 on the same side. The spring I 35 is located in the slide groove II 24, and the axial direction of the spring I 35 is arranged in the vertical direction. One end of the spring I 35 is connected to the mounting seat 8, and the other end thereof is connected to the slider 27. When the spring I When 35 is in a free state, the slider 27 moves down to the lower point, and the slide plate 26 slides inwardly to retract the insertion rod 22 into the cavity 23. The outer end surface of the insertion rod 22 is located inside the side end surface of the mounting seat 8. When the rotating seat 6 rotates away from the mounting position, the synchronous drive mechanism drives the slider 27 to move up, and the slide plate 26 slides outwardly to push the insertion rod 22 out. Under normal conditions, spring I 35 makes the slider 27 be in the lowest position, and the slider 27 uses the connecting rod 29 to pull the slide plate 26 to slide toward the inner end. At this time, the insertion rod 22 moves axially inward, and is retracted into the cavity 23 to achieve the hiding of the insertion rod 22 relative to the mounting seat 8, which is convenient for the connection of the advance drilling rig 7. When the rotating seat 6 rotates to the mounting position, the synchronous drive mechanism drives the slider 27 to move upward. When the slider 27 moves upward, the slide plate 26 is driven to move toward the outer end through the connecting rod 29, and the insertion rod 22 extends axially outward until it is inserted into the mounting hole 18 of the corresponding gear II 17 on the same side, thereby realizing the rotational connection between the advance drilling rig 7 and the mounting seat 8.

[0025] In one embodiment of the present invention, as shown in the attached Figure 4 As shown, the angle driving mechanism includes a bracket 19 mounted on the mounting seat 8, a rotating shaft I 31 rotatably mounted on the bracket 19, and a motor II 20 mounted on the bracket 19. The axis of the rotating shaft I 31 is arranged in the horizontal direction. The rotating shaft I 31 is coaxially connected to the output shaft of the motor II 20. The gear III 21 is coaxially mounted on the head end of the rotating shaft I 31. When the advanced drilling machine 7 is rotatably connected to the mounting seat 8 through the shaft connection mechanism, the gear III 21 is meshed with the gear II 17. The motor II 20 rotates to drive the rotating shaft I 31 to rotate, and the rotating shaft I 31 rotates to drive the gear III 21 to rotate. Since the gear III 21 is meshed with the gear II 17, the angle adjustment of the advanced drilling machine 7 is achieved.

[0026] In one embodiment of the present invention, as shown in the attached Figure 8As shown, the synchronous drive mechanism includes a slide groove III 37 arranged at the bottom of the mounting seat 8 in the vertical direction, a push rod 48 slidably installed in the slide groove III 37 in the vertical direction, a rack I 50 installed at the bottom of the push rod 48 in the horizontal direction, a slide groove VI 53 arranged in the rotating seat 6 in the horizontal direction, a rack II 54 slidably installed in the slide groove VI 53, and an extrusion rod 56 slidably inserted in the rotating seat 6 in the vertical direction, a gear V 52 is rotatably installed in the rotating seat 6, the gear V 52 is located between the rack I 50 and the rack II 54, the upper end of the gear 52 is meshed with the rack I 50, and the lower end of the gear V 52 is meshed with the rack II 54, the head end of the push rod 48 is provided with a guide inclined surface III 49, the lower end of the slider 27 is in sliding friction contact with the guide inclined surface III 49, the spring III 51 is arranged in the horizontal direction, and the spring III One end of 51 is connected to the rotating seat 6, and the other end is connected to the push rod 48. The head end of the rack II 54 is provided with a guide slope III 55, the head end of the extrusion rod 56 is in sliding friction contact with the guide slope III 55, the lower end of the extrusion rod 56 is provided with a circular arc chamfer 57, and the head end of the support seat 10 is horizontally installed with an arc-shaped arc plate 59. When the rotating seat 6 rotates to the installation position, the circular arc chamfer 57 of the extrusion rod 56 is in sliding friction contact with the circular arc surface of the arc plate 59, and the extrusion rod 56 is subjected to the extrusion force and slides upward through the guide slope III 55 to push the rack II 54 to slide, the rack II 54 slides and drives the gear V 52 to rotate, and the gear V 52 drives the rack I 50 to slide in the opposite direction and compress the spring III 51. At this time, the push rod 48 moves horizontally, and the spring I 35 pulls the slider 27 downward. During the downward movement of the slider 27, its lower end always maintains sliding friction contact with the guide slope III 49. When the rotating seat 6 rotates away from the installation position, the extrusion rod 56 leaves the arc plate 59, and the spring III 51 releases the elastic force, making it a free state. Since the elastic force of the spring III 51 is greater than the elastic force of the spring I 35, the spring III 51 pushes the push rod 48 to move in the opposite direction, and uses the guide slope III 49 to drive the slider 27 to move upward and stretch the spring I 35. At this time, the gear V 52 synchronously drives the rack II 54 to move in the opposite direction to achieve reset.

[0027] In one embodiment of the present invention, as shown in the attached Figure 5 and attached Figure 6As shown, it also includes a push frame 28 arranged at the outer end of the slider 27 in the horizontal direction, a slide groove IV 41 arranged in the push frame 28 in the horizontal direction, a vertical plate 30 slidably installed in the slide groove IV 41 through a slide rail 42, a slide groove V 43 arranged in the vertical plate 30 in the vertical direction, a fixed block 45 slidably installed in the slide groove V 43, and a pressing block 39 horizontally inserted in the vertical plate 30, a front end of the mounting seat 8 is provided with a card slot 38 matching the vertical plate 30, a slot 40 is provided at the lower end of the card slot 38, a guide slope I 46 is provided at the upper end of the fixed block 45, and a guide slope II 47 is provided at the lower end thereof, a spring II 44 is arranged in the slide groove V 43, an upper end of which is connected to the vertical plate 30, and a lower end of which is connected to the fixed block 45, and a guide slope I 46 is in sliding frictional contact with the inner end of the pressing block 39. When the slider 27 moves up to the top dead center position, the vertical plate 30 is pushed into the slot 38, and the spring II 44 pushes the lower end of the fixing block 45 to be inserted into the slot 40. When the pressing block 39 is pushed inward, the pressing block 39 drives the fixing block 45 to move up through the guide slope I 46 to disengage from the slot 40 and compress the spring II 44. When the advance drilling rig 7 is axially connected with the mounting seat 8, the slider 27 is at the top dead center position, pushing the vertical plate 30 to slide inward along the slide groove IV 41 using the slide rail 42 until the vertical plate 30 is located in the slot 38. Since the lower end of the fixed block 45 is provided with a guide slope II 47, during the inward sliding process of the vertical plate 30, the guide slope II 47 contacts the outer wall of the mounting seat 8 and gradually pushes the fixed block 45 to move upward and compresses the spring II 44. When the vertical plate 30 completely enters the slot 38, the spring II 44 releases the elastic force to move the fixed block 45 downward to insert it into the slot 40. At this time, the vertical plate 30 cannot move laterally. Since the vertical plate 30 limits the slider 27 in the longitudinal direction, the slider 27 cannot move freely in the vertical direction, which can ensure that the insertion rod 22 always remains in an extended state, ensuring the stability of the connection to the advance drilling rig 7. When unlocking is required, the pressing block 39 is driven inward. Since the rear end of the pressing block 39 contacts the guiding inclined surface Ⅰ 46, the pressing block 39 drives the fixing block 45 to move upward and compress the spring Ⅱ 44 by using the guiding inclined surface Ⅰ 46. The lower end of the fixing block 45 is disengaged from the slot 40 to achieve unlocking. At this time, the vertical plate 30 can be pulled outward, and the slider 27 can be moved in the vertical direction, so as to facilitate the removal of the advanced drilling rig 7.

[0028] In one embodiment of the present invention, as shown in the attached Figure 7 and attached Fig. 9As shown, it also includes N positioning seats 9 arranged on the outer wall of the support seat 10 along the circumferential direction, a positioning groove 60 arranged in the positioning seat 9 along the horizontal direction, a positioning plate 58 slidably installed in the rotating seat 6 along the horizontal direction, and a rotating shaft II 33 rotatably installed in the rotating seat 6, the size of the positioning plate 58 matches the positioning groove 60, and the side end of the positioning plate 58 is provided with a plurality of tooth grooves along its length, a bevel gear I 32 is installed on the rotating shaft I 31, a bevel gear II 36 is installed at the upper end of the rotating shaft II 33, and a gear IV 34 is installed at the lower end of the rotating shaft II 33, the bevel gear I 32 is meshed with the bevel gear II 36, and the gear IV 34 is meshed with the tooth groove of the positioning plate 58, when the rotating seat 6 rotates to the advance drilling rig 7 is facing a front grouting pipe 4 and the motor II 20 rotates to adjust the angle of the advance drilling rig 7 in the horizontal direction, the positioning plate 58 extends from the rotating seat 6 and is inserted into the corresponding positioning groove 60 of the positioning seat 9. When the rotating seat 6 rotates to the advance drilling rig 7 to the corresponding advance grouting pipe 4, the motor II 20 is activated, thereby driving the gear III 21 to rotate so that the pitch angle of the advance drilling rig 7 is adjusted in the horizontal direction, and the rotating shaft II 33 is synchronously driven to rotate through the meshing bevel gear I 32 and bevel gear II 36, so that the gear IV 34 drives the positioning plate 58 to slide relative to the rotating seat 6 to be inserted into the positioning groove 60 in the corresponding positioning seat 9. At this time, the rotating seat 6 is locked relative to the support seat 10, and the rotating seat 6 cannot rotate, preventing the position of the advance drilling rig 7 from changing during operation, thereby further improving the reliability of use.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shield machine in-ground butt joint and surrounding rock stability-maintaining advance grouting device, comprising a cutterhead (2) mounted on the front end of a shield machine (1), a fixing frame (3) disposed in the inner cavity of the shield machine (1), and N advance grouting pipes (4) mounted on the fixing frame (3) at even intervals along a circumferential direction, characterized in that: Also includes: A mounting frame (5) installed in the inner cavity of the shield machine (1); A support seat (10) is fixed to the front end of the mounting frame (5); an advance drilling rig mounting position is provided on the support seat (10); and no advance grouting pipe (4) is provided at the front end of the advance drilling rig mounting position; The rotating seat (6) is a circular ring-shaped structure, which is rotatably mounted on the front end of the supporting seat (10) through a rotating connection mechanism, and the axis of the rotating seat (6) is arranged in the horizontal direction; A rotating seat driving mechanism, disposed in the supporting seat (10) and used for driving the rotating seat (6) to rotate; The mounting seat (8) is arranged on the rotating seat (6) in a vertical direction, and a sealed cavity (23) is arranged in the mounting seat (8). The left and right ends of the cavity (23) are respectively inserted with insertion rods (22) slidably inserted in a horizontal direction. The advance drilling machine (7) has a shaft connection mechanism at its lower end; The plug rod driving mechanism is arranged in the rotating seat (6) and is used to drive the plug rod (22) to slide in the horizontal direction. When the rotating seat (6) rotates to the installation position, the plug rod driving mechanism drives the plug rod (22) to move inward to be located in the cavity (23). When the rotating seat (6) rotates away from the installation position, the plug rod driving mechanism drives the plug rod (22) to extend outward and insert into the shaft connection mechanism of the advance drilling machine (7) to realize the rotational connection between the advance drilling machine (7) and the installation seat (8); and The angle driving mechanism is arranged on the mounting seat (8) and is used to adjust the elevation angle of the advance drilling machine (7) in the initial state toward the horizontal direction.

2. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 1 is characterized in that: The rotating connection mechanism comprises a flange (13) arranged at the front end of the support seat (10) along the circumferential direction and a slide groove I (14) arranged on the inner wall of the rotating seat (6) along the circumferential direction and matching the flange (13), and the flange (13) is embedded in the slide groove I (14).

3. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 1 is characterized in that: The rotating seat driving mechanism comprises a motor I (11) installed in a support seat (10), a gear I (12) coaxially installed on an output shaft of the motor I (11), and an internal gear (15) arranged in a circumferential direction in the rotating seat (6), wherein the axis of the motor I (11) is arranged in a horizontal direction, the internal gear (15) is arranged coaxially with the rotating seat (6), and the gear I (12) meshes with the internal gear (15).

4. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 1 is characterized in that: The advanced drilling rig installation position is located at the bottom of the support seat (10).

5. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 1 is characterized in that: The shaft connection mechanism comprises support rods (16) respectively arranged on the left and right sides of the bottom of the advance drilling machine (7) in the vertical direction, a gear II (17) is arranged at the bottom of the support rod (16), the axis of the gear II (17) is arranged in the horizontal direction, and the gear II (17) is axially provided with a mounting hole (18), the inner diameter of the mounting hole (18) matches the outer diameter of the insertion rod (22), when the rotating seat (6) is rotated to the installation position, the two gears II (17) are respectively placed on the left and right sides of the installation seat (8), when the rotating seat (6) is rotated away from the installation position, the insertion rod driving mechanism drives the insertion rod (22) to extend outward and insert it into the mounting hole of the corresponding gear II (17) on the same side.

6. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 1 is characterized in that: The insertion rod driving mechanism comprises a slide bar (25) installed horizontally in the cavity (23), two slide plates (26), a slide groove II (24) arranged in the mounting seat (8) along the vertical direction, and a slide block (27) slidably installed in the slide groove II (24), the axis of the slide bar (25) is arranged horizontally in the left-right direction, the slide plate (26) is slidably installed on the slide bar (25) along the axial direction of the slide bar (25), the inner end of the insertion rod (22) is fixed to the outer end of the corresponding slide plate (26) on the same side, and the left and right sides of the upper end of the slide block (27) are respectively hingedly installed with connecting rods (29), and the head end of the connecting rod (29) is hingedly connected to the corresponding slide plate (26) on the same side. Then, the spring I (35) is located in the slide groove II (24), the axial direction of the spring I (35) is arranged along the vertical direction, one end of the spring I (35) is connected to the mounting seat (8), and the other end thereof is connected to the slider (27). When the spring I (35) is in a free state, the slider (27) moves down to the lower point position, and the slide plate (26) slides inwardly to shrink the insertion rod (22) into the cavity (23), and the outer end surface of the insertion rod (22) is located inside the side end surface of the mounting seat (8). When the rotating seat (6) rotates away from the mounting position, the synchronous drive mechanism drives the slider (27) to move up, and the slide plate (26) slides outwardly to push the insertion rod (22) out.

7. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 5 is characterized in that: The angle driving mechanism comprises a bracket (19) mounted on a mounting seat (8), a rotating shaft I (31) rotatably mounted on the bracket (19), and a motor II (20) mounted on the bracket (19); the axis of the rotating shaft I (31) is arranged in a horizontal direction; the rotating shaft I (31) is coaxially connected to the output shaft of the motor II (20); the gear III (21) is coaxially mounted on the head end of the rotating shaft I (31); when the advance drilling rig (7) is rotatably connected to the mounting seat (8) through the shaft connection mechanism, the gear III (21) meshes with the gear II (17).

8. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 6 is characterized in that: The synchronous drive mechanism comprises a slide groove III (37) arranged at the bottom of the mounting seat (8) in the vertical direction, a push rod (48) slidably installed in the slide groove III (37) in the vertical direction, a rack I (50) installed at the bottom of the push rod (48) in the horizontal direction, a slide groove VI (53) arranged in the horizontal direction in the rotating seat (6), a rack II (54) slidably installed in the slide groove VI (53), and an extrusion rod (56) slidably inserted in the rotating seat (6) in the vertical direction, a gear V ( The gear V (52) is rotatably mounted in the rotating seat (6), the gear V (52) is located between the rack I (50) and the rack II (54), the upper end of the gear (52) is meshed with the rack I (50), and the lower end of the gear V (52) is meshed with the rack II (54), the head end of the push rod (48) is provided with a guide inclined surface III (49), the lower end of the slider (27) is in sliding friction contact with the guide inclined surface III (49), and the spring III (51) is arranged in the horizontal direction, and one end of the spring III (51) is The support seat (10) is connected to the rotating seat (6), and the other end thereof is connected to the push rod (48). The head end of the rack II (54) is provided with a guide inclined surface III (55). The head end of the extrusion rod (56) is in sliding friction contact with the guide inclined surface III (55). The lower end of the extrusion rod (56) is provided with an arc chamfer (57). The head end of the support seat (10) is horizontally installed with an arc-shaped arc plate (59). When the rotating seat (6) is rotated to the installation position, the arc chamfer (57) of the extrusion rod (56) is in contact with the arc chamfer (57). The arc surface of the plate (59) slides and frictionally contacts the extrusion rod (56), which is subjected to the extrusion force and slides upward through the guide inclined surface III (55), pushing the rack II (54) to slide, and the gear V (52) drives the rack I (50) to slide in the opposite direction and compress the spring III (51). The spring I (35) pulls the slider (27) downward. When the spring III (51) is in a free state, it pushes the push rod (48) to move to use the guide inclined surface III (49) to drive the slider (27) to move upward and stretch the spring I (35).

9. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 6 is characterized in that: The device further comprises a push frame (28) arranged at the outer end of the slider (27) in the horizontal direction, a slide groove IV (41) arranged in the push frame (28) in the horizontal direction, a vertical plate (30) slidably mounted in the slide groove IV (41) through a slide rail (42), a slide groove V (43) arranged in the vertical plate (30) in the vertical direction, a fixing block (45) slidably mounted in the slide groove V (43), and a pressing block (39) horizontally inserted in the vertical plate (30), wherein the front end of the mounting seat (8) is provided with a card slot (38) matching the vertical plate (30), the lower end of the card slot (38) is provided with a slot (40), and the upper end of the fixing block (45) is provided with a guide inclined surface I (41). 6), a guide slope II (47) is provided at its lower end, a spring II (44) is provided in the slide groove V (43), an upper end of the spring II (44) is connected to the vertical plate (30), and a lower end of the spring II (44) is connected to the fixed block (45), and the guide slope I (46) is in sliding frictional contact with the inner end of the pressing block (39). When the slider (27) moves up to the upper dead center position, the vertical plate (30) is pushed into the slot (38), and the spring II (44) pushes the lower end of the fixed block (45) to be inserted into the slot (40). When the pressing block (39) is pushed inward, the pressing block (39) drives the fixed block (45) to move up through the guide slope I (46) to disengage from the slot (40) and compress the spring II (44).

10. The shield underground butt joint and surrounding rock stability advance grouting device according to claim 7, characterized in that: The invention also comprises N positioning seats (9) arranged on the outer wall of the support seat (10) along the circumferential direction, positioning grooves (60) arranged in the positioning seats (9) along the horizontal direction, a positioning plate (58) slidably mounted in the rotating seat (6) along the horizontal direction, and a rotating shaft II (33) rotatably mounted in the rotating seat (6), wherein the size of the positioning plate (58) matches the positioning grooves (60), and a plurality of tooth grooves are arranged on the side end of the positioning plate (58) along the length thereof, a bevel gear I (32) is mounted on the rotating shaft I (31), and the rotating shaft II ( A bevel gear II (36) is installed at the upper end of the rotating shaft II (33), and a gear IV (34) is installed at the lower end of the rotating shaft II (33). The bevel gear I (32) meshes with the bevel gear II (36), and the gear IV (34) meshes with the tooth groove of the positioning plate (58). When the rotating seat (6) rotates until the advance drilling machine (7) is directly opposite to a front grouting pipe (4) and the motor II (20) rotates to adjust the angle of the advance drilling machine (7) in the horizontal direction, the positioning plate (58) extends from the rotating seat (6) and is inserted into the corresponding positioning groove (60) of the positioning seat (9).

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