Variable-diameter rear matching device for TBM (Tunnel Boring Machine)

Abstract

The utility model discloses a TBM (Tunnel Boring Machine) diameter-variable rear matching device which comprises a cylindrical base shell, a plurality of rectangular diameter-variable support plates, a diameter-variable mechanism and a plurality of protective arc plates, and a rear matching device is arranged in the base shell; all the variable-diameter supporting plates are annularly and uniformly wound outside the base shell, one long side of each variable-diameter supporting plate is in shaft hinge with the outer side wall of the base shell through a hinge shaft, and the hinge shaft is parallel to the axis of the base shell; the variable-diameter mechanism can enable all the variable-diameter supporting plates to synchronously rotate by the same angle along the corresponding hinge shafts in the same direction; the protection arc plates are in one-to-one correspondence with the variable-diameter supporting plates, the middles of the inner walls of the protection arc plates are hinged to the long sides, away from the base shell, of the corresponding variable-diameter supporting plates through shafts, and the adjacent protection arc plates are sequentially erected in a single-side mode. The rear matching device can solve the problem that an existing rear matching device for the TBM cannot be adaptively matched with the diameter of a TBM cutterhead.

Description

Technical Field

[0001] The utility model relates to the technical field of TBM excavation, in particular to a TBM variable diameter rear matching device. Background Art

[0002] The TBM consists of a main machine, a connecting bridge and supporting equipment. The main machine mainly consists of a cutter head, main drive components, a shield, a steel arch assembly machine, a support shoe, a main beam and other auxiliary equipment. The supporting equipment consists of a supporting trailer, a hydraulic main pump station, an electrical control cabinet, an emergency generator, an air compressor, a belt conveyor system, a water supply system, an exhaust system, a ventilation and dust removal system, an emergency room, a rest room, a maintenance room, etc.

[0003] Among them, in order to protect the internal equipment, several supporting groups will be equipped with a protective shell on the outside. In order to match the excavation shape of the well and hole, the protective shell is generally cylindrical and matches the diameter of the TBM cutter head.

[0004] However, since the diameters of the pre-excavated wells and holes are not the same, it is necessary to replace the TBM with a corresponding cutterhead size for excavation. At this time, the size of the rear-mounted protective shell will not necessarily match the cutterhead diameter of the TBM used. If the diameter of the rear-mounted protective shell is too large, it is very likely to get stuck in the well. If the diameter of the rear-mounted protective shell is too small, the stability of the shell during movement in the well cannot be guaranteed. The only option is to replace the rear-mounted shell with a matching size, which increases costs. Utility Model Content

[0005] The utility model aims to provide a TBM variable diameter rear accessory to solve the problem that the existing TBM rear accessories cannot adaptably match the TBM cutter head diameter.

[0006] The utility model is realized by the following technical solutions:

[0007] A TBM variable diameter rear-end supporting device comprises: a cylindrical base shell, wherein rear-end supporting equipment is arranged inside the base shell; a plurality of rectangular variable diameter support plates, all of which are evenly arranged around the outside of the base shell in a ring shape, and one long side of the variable diameter support plate is hinged to the outer side wall of the base shell through a hinge shaft, and the hinge shaft is parallel to the axis of the base shell; a variable diameter mechanism, wherein the variable diameter mechanism can make all of the variable diameter support plates rotate synchronously and in the same direction at the same angle along the corresponding hinge shaft; a plurality of protective arc plates, wherein the protective arc plates correspond to the variable diameter support plates one by one, the middle part of the inner wall of the protective arc plate is hinged to the corresponding variable diameter support plate away from the long side of the base shell, and adjacent protective arc plates are sequentially erected on one side.

[0008] Optionally, the diameter of the hinge shaft is much smaller than the outer diameter of the base shell.

[0009] Optionally, the length of the short side of the variable diameter support plate is smaller than the inner radius of the base shell.

[0010] Optionally, the reducing mechanism includes a synchronization mechanism and a power assembly; the synchronization mechanism includes a synchronization ring and a plurality of sliding columns, the synchronization ring is rotatably mounted outside the base shell, all of the sliding columns are coaxially arranged in a ring shape around the base shell, the sliding columns are arranged parallel to the axis of the base shell, one end of the sliding column is connected to the end face of the synchronization ring, the sliding columns correspond one-to-one with the reducing support plates, a plane where the short side of the reducing support plate is located is provided with a sliding groove along the extension direction of the short side, and the sliding groove is used to slide and rotate with the corresponding sliding column; the power assembly can make the synchronization ring rotate coaxially relative to the base shell; or, the power assembly can make the reducing support plate rotate with the hinge shaft as the axis.

[0011] Optionally, the synchronous ring includes a front ring and a rear ring, and the front ring and the rear ring are symmetrically arranged at both ends of the base shell; the slide groove is set to pass through along the long side direction of the variable diameter support plate, and both ends of the slide column pass through the variable diameter support plate and are respectively connected to the front ring and the rear ring.

[0012] Optionally, the power assembly includes multiple hydraulic telescopic rods, at least one hydraulic telescopic rod is provided between two adjacent variable diameter support plates, both ends of the hydraulic telescopic rod are respectively hinged to the two variable diameter support plates, all the hydraulic telescopic rods located between the same two variable diameter support plates are arranged in parallel and equidistantly, and all the hydraulic telescopic rods are telescoped synchronously; when the hydraulic telescopic rod is extended to the longest, the variable diameter cutter disc is at its maximum diameter.

[0013] Optionally, the synchronizer ring is rotatably mounted on the base shell via a first reset torsion spring, one end of the first reset torsion spring is connected to the synchronizer ring, and the other end is connected to the base shell; when the first reset torsion spring is in a natural state, the variable diameter support plate is rotated inwardly to a minimum diameter.

[0014] Optionally, a second return torsion spring is provided at the axial hinge of the arc protection plate, and the second return torsion spring is used to compress the two arc protection plates that are stacked.

[0015] Optionally, the arc protection plate is an elastic plate.

[0016] Optionally, a limit block is axially provided on the inner wall of the base shell, a base is provided inside the base shell, a limit groove matching the limit block is opened on the bottom surface of the base, and the top surface of the base is a plane; a hook is provided on the end surface of the base.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] The utility model provides a TBM variable diameter rear supporting device, which provides a cylindrical basic protective shell structure and an inner layer by setting a cylindrical base shell. The cylindrical shape has strong structural performance of isotropy and can effectively protect the rear supporting equipment arranged therein; on this basis, by setting a plurality of variable diameter support plates, the axis of which is hinged to the outer wall of the base shell, the cylindrical surface where the outer side of the variable diameter support plate is located can change the radius as the variable diameter support plate rotates, thereby changing the outer diameter of the protective shell as a whole; on this basis, by setting a plurality of protective arc plates, an outer layer of the protective shell is laid on the outer side of the variable diameter support plate, and utilizing the protective arc plates to prevent the outer side of the protective shell from being damaged. The setting mode of single-side overlap in sequence can achieve a fully enclosed protection effect and maintain a relative cylindrical outer wall without affecting the diameter change; on this basis, by setting a diameter-changing mechanism, it is used to control all the diameter-changing support plates to rotate synchronously and in the same direction at the same angle, thereby ensuring the cylindrical outer wall; through the mutual cooperation of the above-mentioned features, the TBM variable diameter rear matching can achieve the effect of changing the outer diameter, thereby matching the diameter of the cutter disc of the TBM used, thereby effectively solving the problem that the existing rear matching for TBM cannot adaptably match the diameter of the TBM cutter disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0020] Figure 1 A front view schematic diagram of a TBM with variable diameter provided by an embodiment of the utility model;

[0021] Figure 2 A front perspective schematic diagram of a TBM variable diameter rear accessory provided by an embodiment of the utility model when it is in a contracted (diameter reduced) state;

[0022] Figure 3 A front perspective schematic diagram of a TBM variable diameter rear accessory provided by an embodiment of the utility model when it is in an expanded (diameter increased) state;

[0023] Figure 4 An exploded schematic diagram of the base shell and the base provided for the TBM with variable diameter according to an embodiment of the utility model.

[0024] Marks and corresponding parts names in the attached drawings:

[0025] 10-base shell; 11-articulated shaft; 12-limiting block; 13-base; 131-hook; 20-diameter reducing support plate; 21-slide groove; 30-protective arc plate; 31-second reset torsion spring; 40-synchronizing ring; 41-slide column; 42-hydraulic telescopic rod; 43-first reset torsion spring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the utility model and their descriptions are only used to explain the utility model and are not intended to limit the utility model.

[0027] Please refer to Figures 1 to 4 The embodiment of the utility model provides a TBM variable diameter rear matching, comprising: a cylindrical base shell 10, wherein the rear matching equipment is arranged inside the base shell 10; secondly, it comprises a plurality of rectangular variable diameter support plates 20, all of which are evenly arranged around the outside of the base shell 10 in a ring shape, and one long side of the variable diameter support plate 20 is hinged to the outer wall of the base shell 10 through a hinge shaft 11, and the hinge shaft 11 is parallel to the axis of the base shell 10; thirdly, it comprises a variable diameter mechanism, and the variable diameter mechanism can make all of the variable diameter support plates 20 rotate synchronously and in the same direction along the corresponding hinge shaft 11 at the same angle; fourthly, it comprises a plurality of protective arc plates 30, and the protective arc plates 30 correspond to the variable diameter support plates 20 one by one, and the middle part of the inner wall of the protective arc plate 30 is hinged to the corresponding variable diameter support plate 20 away from the long side of the base shell 10, and the adjacent protective arc plates 30 are unilaterally erected in sequence.

[0028] The utility model provides a TBM variable diameter rear supporting device, which provides a cylindrical basic protective shell structure and an inner layer by setting a cylindrical base shell 10. The cylindrical shape has strong structural performance of isotropy and can effectively protect the rear supporting equipment set therein; on this basis, by setting a plurality of variable diameter support plates 20, the axis of which is hinged to the outer wall of the base shell 10, the cylindrical surface where the outer side of the variable diameter support plate 20 is located can change the radius as the variable diameter support plate 20 rotates, thereby changing the outer diameter of the protective shell as a whole; on this basis, by setting a plurality of protective arc plates 30, an outer layer of protective arc plates 30 is laid on the outer side of the variable diameter support plate 20. The protective shell, by virtue of its sequential single-side overlapping arrangement, can achieve a fully enclosed protection effect, maintain a relative cylindrical outer wall, and will not affect the diameter change; on this basis, by providing a diameter-changing mechanism, it is utilized to control all the diameter-changing support plates 20 to rotate synchronously and in the same direction at the same angle, thereby ensuring the cylindrical outer wall; through the mutual cooperation of the above-mentioned features, the TBM variable diameter rear matching can achieve the effect of changing the outer diameter, thereby matching the diameter of the cutter disc of the TBM used, thereby effectively solving the problem that the existing rear matching for TBM cannot adaptably match the diameter of the TBM cutter disc.

[0029] Preferably, in order to ensure that the variable diameter support plate 20 has as large a rotation range as possible, the diameter of the hinge shaft 11 is much smaller than the outer diameter of the base shell 10 .

[0030] Preferably, the length of the short side of the reducing support plate 20 is smaller than the inner radius of the base shell 10 .

[0031] In order to further explain the specific structure of the diameter-changing mechanism, the diameter-changing mechanism includes a synchronization mechanism and a power assembly; the synchronization mechanism includes a synchronization ring 40 and a plurality of slide posts 41, the synchronization ring 40 is rotatably mounted outside the base shell 10, all of the slide posts 41 are coaxially arranged in a ring shape around the base shell 10, the slide posts 41 are arranged parallel to the axis of the base shell 10, one end of the slide post 41 is connected to the end face of the synchronization ring 40, the slide posts 41 correspond one-to-one with the diameter-changing support plates 20, and a slide groove 21 is provided on the plane where the short side of the diameter-changing support plate 20 is located along the extension direction of the short side, and the slide groove 21 is used to slide and rotate with the corresponding slide post 41; the power assembly can make the synchronization ring 40 rotate coaxially relative to the base shell 10; or, the power assembly can make the diameter-changing support plate 20 rotate with the hinge shaft 11 as the axis.

[0032] Through the above-mentioned arrangement, the synchronization mechanism is utilized to ensure the same-direction, same-angle, and synchronous rotation of all the variable-diameter support plates 20. Specifically, since the synchronization ring 40 can only rotate with the base shell 10 as the axis, all the slide posts 41 can move synchronously along the same circular line, thereby driving all the variable-diameter support plates 20 to rotate synchronously. During the process, the slide post 41 slides and (relatively) rotates along the slide groove 21. By arranging a power component, force is applied in the above-mentioned two ways. Due to the integrity and transmission of the structure, the same-direction, same-angle, and synchronous rotation of all the variable-diameter support plates 20 can be achieved.

[0033] Preferably, in order to further improve the stability of the overall structure, the synchronizer ring 40 includes a front ring and a rear ring, and the front ring and the rear ring are symmetrically arranged at the two ends of the base shell 10; the slide groove 21 is arranged to pass through along the long side direction of the variable diameter support plate 20, and both ends of the slide column 41 pass through the variable diameter support plate 20 and are respectively connected to the front ring and the rear ring.

[0034] In order to further explain the specific structure of the power assembly, the power assembly includes a plurality of hydraulic telescopic rods 42, at least one hydraulic telescopic rod 42 is provided between two adjacent variable diameter support plates 20, both ends of the hydraulic telescopic rod 42 are respectively hinged to the two variable diameter support plates 20, all the hydraulic telescopic rods 42 located between the same two variable diameter support plates 20 are arranged in parallel and equidistantly, and all the hydraulic telescopic rods 42 are extended and retracted synchronously; when the hydraulic telescopic rod 42 is extended to the longest, the variable diameter cutter disc is at the maximum diameter.

[0035] Through the above arrangement, the hydraulic telescopic rod 42 is extended and retracted to change the angle between two adjacent variable diameter support plates 20, so that the synchronous mechanism can further regulate and force all the variable diameter support plates 20 to rotate in the same direction, at the same angle, and synchronously.

[0036] In order to regulate the rotation direction trend of the variable diameter support plate 20, the synchronizer ring 40 is rotatably mounted on the base shell 10 through a first return torsion spring 43, one end of the first return torsion spring 43 is connected to the synchronizer ring 40, and the other end is connected to the base shell 10; when the first return torsion spring 43 is in a natural state, the variable diameter support plate 20 rotates inward to the minimum diameter.

[0037] Through the above arrangement, the first reset torsion spring 43 is used to force the unstressed reducer support plate 20 to rotate to and remain at the minimum radius. When the outer diameter of the rear matching needs to be adjusted, the power component applies force to force the reducer support plate 20 to rotate, so that the protective arc plate 30 is gradually opened; and the reset torsion spring 43 can determine the direction of rotation of the synchronizer ring 40 during reset, thereby limiting the direction of rotation of the reducer support plate 20.

[0038] Preferably, in order to ensure the airtightness and structural performance of the outer protective shell, a second return torsion spring 31 is provided at the axial hinge of the protective arc plate 30, and the second return torsion spring 31 is used to compress the two protective arc plates 30.

[0039] Preferably, in order to further improve the airtightness of the outer protective shell, the protective arc plate 30 is an elastic plate.

[0040] In order to stably place various supporting equipment in the base shell 10, a limit block 12 is axially provided on the inner wall of the base shell 10, and a base 13 is provided in the base shell 10. The bottom surface of the base 13 is provided with a limit groove matching the limit block 12, and the top surface of the base 13 is a plane; the end surface of the base 13 is provided with a hook 131.

[0041] By setting the base 13, a horizontal surface is provided for setting various rear supporting equipment. By setting the limit block 12 and the limit groove, the base 13 is prevented from unnecessary rotation or sliding. By setting the hook 131, it is convenient to connect with the front vehicle or the rear end of the TBM.

[0042] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A TBM variable diameter rear supporting device, characterized in that: include: A cylindrical base shell (10), wherein the interior of the base shell (10) is provided with a rear supporting device; A plurality of rectangular variable diameter support plates (20), all of which are evenly arranged in a ring shape around the outside of the base shell (10), one long side of the variable diameter support plate (20) being hinged to the outer wall of the base shell (10) via a hinge shaft (11), and the hinge shaft (11) is parallel to the axis of the base shell (10); A diameter-changing mechanism, wherein the diameter-changing mechanism can enable all the diameter-changing support plates (20) to rotate synchronously and in the same direction along the corresponding hinge shaft (11) at the same angle; A plurality of arc protection plates (30) are provided, wherein the arc protection plates (30) correspond to the variable diameter support plates (20) one by one, the middle portion of the inner wall of the arc protection plate (30) is hinged with the corresponding variable diameter support plate (20) away from the long side axis of the base shell (10), and adjacent arc protection plates (30) are sequentially arranged on one side.

2. The TBM variable diameter rear supporting device according to claim 1 is characterized in that: The diameter of the hinge shaft (11) is much smaller than the outer diameter of the base shell (10).

3. The TBM variable diameter rear supporting device according to claim 2 is characterized in that: The length of the short side of the variable diameter support plate (20) is smaller than the inner radius of the base shell (10).

4. The TBM variable diameter rear supporting device according to claim 1 is characterized in that: The diameter-changing mechanism includes a synchronization mechanism and a power assembly; The synchronization mechanism comprises a synchronization ring (40) and a plurality of slide posts (41). The synchronization ring (40) is rotatably mounted outside the base shell (10). All the slide posts (41) are coaxially arranged in a ring shape around the base shell (10) and are evenly arranged. The slide posts (41) are arranged parallel to the axis of the base shell (10). One end of the slide post (41) is connected to the end face of the synchronization ring (40). The slide posts (41) correspond to the variable diameter support plates (20) one by one. A slide groove (21) is provided on the plane where the short side of the variable diameter support plates (20) is located along the extension direction of the short side, and the slide posts (41) are slidably and rotatably matched with the corresponding slide posts (41) through the slide groove (21). The power assembly can cause the synchronizer ring (40) to rotate coaxially relative to the base shell (10); or, the power assembly can cause the variable diameter support plate (20) to rotate around the hinge shaft (11).

5. The TBM variable diameter rear supporting device according to claim 4 is characterized in that: The synchronizer ring (40) comprises a front ring and a rear ring, and the front ring and the rear ring are symmetrically arranged at two ends of the base shell (10); The slide groove (21) is arranged to penetrate along the long side direction of the variable diameter support plate (20), and both ends of the slide column (41) penetrate the variable diameter support plate (20) and are respectively connected to the front ring and the rear ring.

6. The TBM variable diameter rear support according to claim 5 is characterized in that: The power assembly comprises a plurality of hydraulic telescopic rods (42), at least one hydraulic telescopic rod (42) is arranged between two adjacent variable diameter support plates (20), two ends of the hydraulic telescopic rod (42) are respectively hinged to the two variable diameter support plates (20), all the hydraulic telescopic rods (42) located between the same two variable diameter support plates (20) are arranged in parallel and at equal distances, and all the hydraulic telescopic rods (42) are synchronously telescopic; When the hydraulic telescopic rod (42) is extended to its longest length, the TBM variable diameter rear set is at the maximum diameter.

7. The TBM variable diameter rear support according to claim 4 is characterized in that: The synchronizer ring (40) is rotatably mounted on the base shell (10) via a first return torsion spring (43); one end of the first return torsion spring (43) is connected to the synchronizer ring (40), and the other end is connected to the base shell (10); When the first return torsion spring (43) is in a natural state, the variable diameter support plate (20) rotates inward to a minimum diameter.

8. The TBM variable diameter rear support according to claim 1 is characterized in that: A second return torsion spring (31) is provided at the axial hinge of the arc protection plate (30), and the second return torsion spring (31) is used to compress the two arc protection plates (30) that are stacked.

9. The TBM variable diameter rear support according to claim 1, characterized in that: The arc protection plate (30) is an elastic plate.

10. The TBM variable diameter rear support according to claim 1, characterized in that: A limit block (12) is provided on the inner wall of the base shell (10) along the axial direction, a base (13) is provided inside the base shell (10), a limit groove matching the limit block (12) is provided on the bottom surface of the base (13), and the top surface of the base (13) is a plane; A hook (131) is provided on the end surface of the base (13).

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