A vacuum chuck sealing cavity structure of a segment hoisting system of a shield tunneling machine and a vacuum chuck

Abstract

The application provides a shield tunnel segment hoisting system vacuum chuck sealing cavity structure and a vacuum chuck, which comprises a chuck body, a sealing structure, a middle zone sealing cavity, an upper zone sealing cavity, a lower zone sealing cavity, a left zone sealing cavity and a right zone sealing cavity; a left zone air inlet is arranged in the left zone sealing cavity, a right zone air inlet is arranged in the right zone sealing cavity, and the left zone air inlet and the right zone air inlet are connected in parallel; a middle zone air inlet is arranged in the middle zone sealing cavity; an upper zone air inlet is arranged in the upper zone sealing cavity, a lower zone air inlet is arranged in the lower zone sealing cavity, and the upper zone air inlet and the lower zone air inlet are connected in parallel; the total area covered by the left zone sealing cavity, the middle zone sealing cavity and the right zone sealing cavity is less than the adsorbable area of a narrow segment standard block; and the total area covered by the left zone sealing cavity, the middle zone sealing cavity, the right zone sealing cavity, the upper zone sealing cavity and the lower zone sealing cavity is less than the adsorbable area of a wide segment standard block. The application can use one specification of shield tunnel segment vacuum chuck to meet the use of two width sizes of segments.

Description

Technical Field

[0001] This application relates to the field of vacuum suction cup technology, and in particular to a vacuum suction cup sealing cavity structure and vacuum suction cup for a tunnel boring machine segment hoisting system. Background Technology

[0002] With the development of urban construction, tunnel boring machines (TBMs) are playing an increasingly important role in urban construction, becoming indispensable equipment for urban subway tunnel construction and utility tunnel construction. As a key functional component of the TBM segment hoisting system, the reliability of the vacuum suction cup determines whether heavy segments can be safely, quickly, and smoothly transported to the work area during tunnel construction.

[0003] However, due to the increasing complexity of urban underground spaces, subway tunnels often exhibit inconsistent segment widths within the same tunnel, particularly when the width difference exceeds 0.5m. Consequently, equipment manufacturers often require a single tunnel boring machine (TBM) to be equipped with two different sizes of vacuum suction cups. This approach not only significantly increases TBM manufacturing costs but also makes replacing the vacuum suction cups inside the tunnel difficult. Therefore, a single-set vacuum suction cup solution that can meet these specific requirements is urgently needed. Utility Model Content

[0004] To address the issues of high cost and difficulty in replacement caused by the need for two sets of vacuum suction cups on the tunnel boring machine due to inconsistent tunnel segment widths, this application provides a vacuum suction cup sealing cavity structure and vacuum suction cup for a tunnel boring machine segment hoisting system.

[0005] Firstly, this application provides a vacuum suction cup sealing cavity structure for a tunnel boring machine segment hoisting system, which adopts the following technical solution: A vacuum suction cup sealing cavity structure for a tunnel boring machine segment hoisting system includes a disk body and a middle sealing cavity, an upper sealing cavity, a lower sealing cavity, a left sealing cavity, and a right sealing cavity disposed in the disk body. The disk body is provided with a sealing structure at the edge of each sealing cavity. The left sealing cavity is provided with a left air inlet, and the right sealing cavity is provided with a right air inlet. The left air inlet and the right air inlet are connected in parallel. The central sealing cavity is provided with a central air inlet; The upper sealing cavity is provided with an upper air inlet, and the lower sealing cavity is provided with a lower air inlet. The upper air inlet and the lower air inlet are connected in parallel. The total area covered by the left, middle, and right sealing cavities is smaller than the adsorption area of ​​the narrow tube segment standard block. The total area covered by the left, middle, right, upper, and lower sealing cavities is less than the adsorption area of ​​the standard block of the wide tube segment.

[0006] Furthermore, the coverage area of ​​the central sealing cavity is smaller than the adsorption area of ​​the wide tube segment K and the narrow tube segment K.

[0007] Furthermore, the left air inlet and the right air inlet are connected in parallel to form a first main air path, and a first coaxial reversing valve is provided on the first main air path. The central air inlet is connected to a second main air path, and a second coaxial reversing valve is installed on the second main air path; The upper air inlet and the lower air inlet are connected in parallel to a third main air path, and a third coaxial reversing valve is installed on the third main air path.

[0008] Furthermore, the sealing structure includes heavy-duty guide rails surrounding the edges of each sealing cavity and foamed sponge sealing strips installed in the heavy-duty guide rails.

[0009] Secondly, the vacuum suction cup of the tunnel boring machine segment hoisting system provided in this application, based on the above-mentioned vacuum suction cup sealing cavity structure of the tunnel boring machine segment hoisting system, further includes: a top plate in the disk body and a main arc plate welded and fixed to the top plate, the outer arc side of the main arc plate is disposed away from the top plate, and the sealing cavity structure is disposed on the outer arc side of the main arc plate. The top plate is welded with multiple small and large stiffening plates.

[0010] Furthermore, a cover arc plate is connected to the outer arc side of the main arc plate, and multiple connecting ribs are welded between the cover arc plate and the main arc plate. The sealing surface of the sealing structure protrudes from the outer arc side of the cover arc plate.

[0011] Furthermore, multiple positioning guide sleeves are bolted and fixed on the main arc plate; when the vacuum suction cup adsorbs the tube segment, the positioning guide sleeves are inserted into the positioning holes on the tube segment.

[0012] Furthermore, the outer arc side of the covering arc plate is bonded with multiple bolt hole sealing plates corresponding to the bolt holes on the tube segment. The bolt hole sealing plates are distributed in the empty areas between the left sealing cavity, the middle sealing cavity, and the right sealing cavity and the upper sealing cavity, respectively, as well as in the empty areas between the left sealing cavity and the right sealing cavity and the lower sealing cavity, respectively.

[0013] Furthermore, multiple buffer rubber pads distributed in the left sealing cavity, the middle sealing cavity, and the right sealing cavity are bonded to the outer arc side of the covering arc plate.

[0014] Furthermore, the air lines of the left air inlet, the middle air inlet, the right air inlet, the upper air inlet, and the lower air inlet are all connected to a vacuum tank, a one-way valve, and a vacuum pump.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. Assign wide and narrow tunnel segment K-blocks to the central sealing cavity; assign narrow tunnel segment standard blocks to the central, left, and right sealing cavities; and assign wide tunnel segment standard blocks to the central, left, right, upper, and lower sealing cavities. This configuration allows for the use of a single type of tunnel boring machine segment vacuum suction cup to accommodate two different widths of tunnel segments while meeting relevant safety standards. It eliminates the need for suction cup replacement within the tunnel, saving significant labor and equipment manufacturing costs. 2. By setting a positioning guide sleeve, it can be used for positioning and tangential support and limiting between the vacuum suction cup and the tube segment during operation; 3. By setting a bolt hole sealing plate, it can be used to seal the bolt mounting holes on the tube segment when the vacuum suction cup is working; 4. By setting a buffer rubber pad, it can be used to limit the amount of sealing compression and support the atmospheric pressure on the tube segment when the vacuum suction cup is working. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the vacuum circuit according to an embodiment of this application; Figure 3 It is along Figure 1 Schematic diagram of the cross-sectional structure along line AA in the middle.

[0018] Figure label: 11. Middle sealing cavity; 12. Upper sealing cavity; 13. Lower sealing cavity; 14. Left sealing cavity; 15. Right sealing cavity; 21. Middle air intake; 22. Upper air intake; 23. Lower air intake; 24. Left air intake; 25. Right air intake; 31. First main gas path; 32. Second main gas path; 33. Third main gas path; 41. First coaxial directional valve; 42. Second coaxial directional valve; 43. Third coaxial directional valve; 51. Heavy-duty guide rail; 52. Foamed sponge sealing strip; 61. Top plate; 611. Small stiffening plate; 612. Large stiffening plate; 62. Main arc plate; 63. Covering arc plate; 64. Connecting stiffening plate; 71. Positioning guide sleeve; 72. Bolt hole sealing plate; 73. Buffer rubber pad; 81. Vacuum container; 82. Check valve; 83. Vacuum pump; 9. Disc body. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] Reference Figure 1 and Figure 2 This application discloses a vacuum suction cup sealing cavity structure for a tunnel boring machine segment hoisting system. It includes a disk body 9 and four sealing cavities: a central sealing cavity 11, an upper sealing cavity 12, a lower sealing cavity 13, a left sealing cavity 14, and a right sealing cavity 15, all disposed within the disk body 9. The upper, lower, left, and right sealing cavities 12, 13, 14, and 15 surround the central sealing cavity 11. The upper and lower sealing cavities 12 and 13 are elongated, while the left, middle, and right sealing cavities 14 and 15 are arranged sequentially between them. The disk body 9 has sealing structures at the edges of each sealing cavity. These sealing structures include heavy-duty guide rails 51 surrounding the edges of each sealing cavity and foamed sponge sealing strips 52 installed within the heavy-duty guide rails 51. The foamed sponge sealing strips 52 are used to contact the tunnel segment.

[0021] A left air inlet 24 is provided in the left sealing cavity 14, and a right air inlet 25 is provided in the right sealing cavity 15. The left air inlet 24 and the right air inlet 25 are connected in parallel. A central air inlet 21 is provided in the central sealing cavity 11; The upper sealing cavity 12 is provided with an upper air inlet 22, and the lower sealing cavity 13 is provided with a lower air inlet 23. The upper air inlet 22 and the lower air inlet 23 are connected in parallel.

[0022] Furthermore, in the specific setup, the total area covered by the left sealing cavity 14, the middle sealing cavity 11, and the right sealing cavity 15 is smaller than the adsorption area of ​​the narrow tube standard block; The total area covered by the left sealing cavity 14, the middle sealing cavity 11, the right sealing cavity 15, the upper sealing cavity 12, and the lower sealing cavity 13 is smaller than the adsorption area of ​​the wide tube segment standard block; The coverage area of ​​the central sealing cavity 11 is smaller than the adsorption area of ​​the wide tube segment K and the narrow tube segment K.

[0023] Moreover, the left air inlet 24 and the right air inlet 25 are connected in parallel to a first main air passage 31, and a first coaxial reversing valve 41 is installed on the first main air passage 31. The central air intake 21 is connected to a second main air path 32, and a second coaxial reversing valve 42 is installed on the second main air path 32. The upper air inlet 22 and the lower air inlet 23 are connected in parallel to a third main air passage 33, and a third coaxial reversing valve 43 is installed on the third main air passage 33.

[0024] Therefore, when used for the adsorption of wide tube sheet K blocks and narrow tube sheet K blocks, the vacuum system can be controlled by the second coaxial reversing valve 42, and the central sealing cavity 11 can be evacuated through the central air inlet 21, so that the wide tube sheet K blocks and narrow tube sheet K blocks can be stably adsorbed by relying solely on the central sealing cavity 11.

[0025] When used for adsorption of narrow tube sheet standard blocks, the vacuum system is controlled by the first coaxial reversing valve 41 and the second coaxial reversing valve 42. The central zone air inlet 21, the left zone air inlet 24, and the right zone air inlet 25 are used to simultaneously evacuate the central zone sealing cavity 11, the left zone sealing cavity 14, and the right zone sealing cavity 15, respectively, so as to stably adsorb the narrow tube sheet with the help of the central zone sealing cavity 11, the left zone sealing cavity 14, and the right zone sealing cavity 15.

[0026] When used for adsorption of wide tube segments, the first coaxial reversing valve 41, the second coaxial reversing valve 42, and the third coaxial reversing valve 43 are opened simultaneously. Vacuum is drawn simultaneously in the middle zone air inlet 21, the left zone air inlet 24, the right zone air inlet 25, the upper zone air inlet 22, and the lower zone air inlet 23, respectively, to the middle zone sealing cavity 11, the left zone sealing cavity 14, the right zone sealing cavity 15, the upper zone sealing cavity 12, and the lower zone sealing cavity 13. This allows for stable adsorption of the wide tube segments using the middle zone sealing cavity 11, the left zone sealing cavity 14, the right zone sealing cavity 15, the upper zone sealing cavity 12, and the lower zone sealing cavity 13.

[0027] Therefore, with the above setup, a single specification of tunnel boring machine segment vacuum suction cup can be used to accommodate segments of two different widths, while also meeting relevant safety standards. This eliminates the need for suction cup replacement inside the tunnel, saving significant labor and equipment manufacturing costs.

[0028] This application also discloses a vacuum suction cup for a tunnel boring machine segment hoisting system. Based on the above-mentioned sealed cavity structure of the vacuum suction cup for a tunnel boring machine segment hoisting system, the following technical solution is adopted: A vacuum suction cup for a tunnel boring machine segment hoisting system, as shown in the reference. Figure 1 and Figure 3It also includes: a top plate 61 in the disc body 9 and a main arc plate 62 welded and fixed to the top plate 61. The outer arc side of the main arc plate 62 is set away from the top plate 61, and the sealing cavity structure is set on the outer arc side of the main arc plate 62. In addition, in order to strengthen the structural strength of the top plate 61, multiple small stiffeners 611 and large stiffeners 612 are welded and connected on the top plate 61. The large stiffeners 612 correspond to the arc top area of ​​the main arc plate 62.

[0029] In addition, a cover arc plate 63 is connected to the outer arc side of the main arc plate 62, and multiple connecting ribs 64 are welded between the cover arc plate 63 and the main arc plate 62. The sealing surface of the sealing structure protrudes from the outer arc side of the cover arc plate 63. Specifically, the heavy-duty guide rail 51 is fixedly connected to the main arc plate 62, and the cover arc plate 63 is flush with the surface of the heavy-duty guide rail 51, so that the foamed sponge sealing strip 52 protrudes from the cover arc plate 63.

[0030] Furthermore, multiple positioning guide sleeves 71 are bolted and fixed on the main arc plate 62; when the vacuum suction cup adsorbs the tube segment, the positioning guide sleeves 71 are inserted into the positioning holes on the tube segment. Specifically, the positioning guide sleeves 71 are installed on the circular mounting base welded to the main arc plate 62 by screws, and the positioning guide sleeves 71 are used for positioning and tangential support and limitation between the vacuum suction cup and the tube segment when the vacuum suction cup is working.

[0031] Multiple bolt hole sealing plates 72, corresponding to the bolt holes on the tube segment, are bonded to the outer arc side of the covering arc plate 63. The bolt hole sealing plates 72 are distributed in the empty areas between the left sealing cavity 14, the middle sealing cavity 11, and the right sealing cavity 15 and the upper sealing cavity 12, respectively, and in the empty areas between the left sealing cavity 14 and the right sealing cavity 15 and the lower sealing cavity 13, respectively. The bolt hole sealing plates 72 are used to seal the bolt mounting holes on the tube segment when the vacuum suction cup is working.

[0032] Multiple buffer rubber pads 73 are bonded to the outer arc side of the cover plate 63, which are distributed in the left sealing cavity 14, the middle sealing cavity 11, and the right sealing cavity 15. The buffer rubber pads 73 are used to limit the sealing compression and support the atmospheric pressure on the tube segment when the vacuum suction cup is working.

[0033] Moreover, refer to Figure 1 and Figure 2 The air lines of the left air inlet 24, the middle air inlet 21, the right air inlet 25, the upper air inlet 22, and the lower air inlet 23 are all connected to a vacuum tank 81, a one-way valve 82, and a vacuum pump 83.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shield tunnel segment hoisting system vacuum chuck sealed cavity structure, characterized in that, include: The disc body includes a central sealing cavity, an upper sealing cavity, a lower sealing cavity, a left sealing cavity, and a right sealing cavity, and the disc body has a sealing structure at the edge of each sealing cavity; The left sealing cavity is provided with a left air inlet, and the right sealing cavity is provided with a right air inlet. The left air inlet and the right air inlet are connected in parallel. The central sealing cavity is provided with a central air inlet; The upper sealing cavity is provided with an upper air inlet, and the lower sealing cavity is provided with a lower air inlet. The upper air inlet and the lower air inlet are connected in parallel. The total area covered by the left, middle, and right sealing cavities is smaller than the adsorption area of ​​the narrow tube segment standard block. The total area covered by the left, middle, right, upper, and lower sealing cavities is less than the adsorption area of ​​the standard block of the wide tube segment.

2. The vacuum cup sealed cavity structure of a segment handling system of a tunneling machine according to claim 1, characterized in that, The coverage area of ​​the central sealing cavity is smaller than the adsorption area of ​​the wide tube segment K and the narrow tube segment K.

3. The vacuum cup sealed cavity structure of a segment handling system of a tunneling machine according to claim 1, characterized in that, The left air inlet and the right air inlet are connected in parallel to form a first main air path, and a first coaxial reversing valve is provided on the first main air path. The central air inlet is connected to a second main air path, and a second coaxial reversing valve is installed on the second main air path; The upper air inlet and the lower air inlet are connected in parallel to a third main air path, and a third coaxial reversing valve is installed on the third main air path.

4. The vacuum cup sealed cavity structure of a segment handling system of a tunneling machine according to claim 1, characterized in that, The sealing structure includes heavy-duty guide rails surrounding the edges of each sealing cavity and foamed sponge sealing strips installed in the heavy-duty guide rails.

5. A vacuum cup of a segment handling system of a tunnel boring machine, based on a vacuum cup sealing chamber structure of a segment handling system of a tunnel boring machine according to any one of claims 1 to 4, characterized in that, Also includes: The top plate in the disk body and the main arc plate welded and fixed to the top plate, the outer arc side of the main arc plate is disposed away from the top plate, and the sealing cavity structure is disposed on the outer arc side of the main arc plate; The top plate is welded with multiple small and large stiffening plates.

6. The vacuum chuck of a segment handling system of a tunnel boring machine according to claim 5, characterized in that The outer arc side of the main arc plate is connected to a cover arc plate, and multiple connecting ribs are welded between the cover arc plate and the main arc plate. The sealing surface of the sealing structure protrudes from the outer arc side of the cover arc plate.

7. The vacuum chuck of a segment handling system of a tunnel boring machine according to claim 5, characterized in that, Multiple positioning guide sleeves are bolted and fixed on the main arc plate; when the vacuum suction cup adsorbs the tube segment, the positioning guide sleeves are inserted into the positioning holes on the tube segment.

8. The vacuum chuck of a segment handling system of a tunnel boring machine according to claim 6, characterized in that The outer arc side of the covering arc plate is bonded with multiple bolt hole sealing plates corresponding to the bolt holes on the tube segment. The bolt hole sealing plates are distributed in the empty areas between the left sealing cavity, the middle sealing cavity, and the right sealing cavity and the upper sealing cavity, respectively, as well as in the empty areas between the left sealing cavity and the right sealing cavity and the lower sealing cavity, respectively.

9. The vacuum chuck of a segment handling system of a tunnel boring machine according to claim 6, characterized in that, Multiple buffer rubber pads are bonded to the outer arc side of the covering arc plate and distributed in the left sealing cavity, the middle sealing cavity and the right sealing cavity.

10. The vacuum chuck for segment lifting system of a tunneling machine according to claim 5, wherein The air inlets of the left, middle, right, upper, and lower zones are all connected to a vacuum tank, a one-way valve, and a vacuum pump.

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