Tunnel jumbo and its trailer, tunnel jumbo withdrawal method

Abstract

The present application relates to the construction of a tunnel wastewater pump house, in particular to a tunnel shaft tunneling machine, a trailer thereof and a tunnel shaft tunneling machine withdrawal method. The trailer of the tunnel shaft tunneling machine comprises a frame, the frame being provided with a track walking device for supporting the track in the tunnel; the left and right sides of the frame are provided with side wall walking devices, the side wall walking devices being used for supporting the trailer on the side wall of the tunnel by rolling obliquely downward, at least one of the track walking device and the side wall walking device being adjustable in height, so as to realize the switching of the track support and the side wall support by changing the support height of the device itself. The present application can solve the problem that the trailer of the existing tunnel shaft tunneling machine cannot be quickly withdrawn after the completion of the shaft excavation.

Description

TECHNICAL FIELD

[0001] The present application relates to the construction of a tunnel wastewater pump house, in particular to a tunnel shaft tunneling machine and its trailer, and a tunnel shaft tunneling machine removal method. BACKGROUND

[0002] The tunnel shaft tunneling machine is suitable for excavating a wastewater pump house in an already completed tunnel. The tunnel shaft tunneling machine generally uses a downward mechanical method for operation, and is mainly composed of an excavation main machine and a rear supporting system. The rear supporting system uses a trailer as a carrier. The tunnel shaft tunneling machine itself does not have the ability to move, and each time it moves, it relies on a locomotive for traction. The trailer is usually three to four sections, the front of the first trailer is connected to the tail of the locomotive, and each trailer is connected by a tow bar and a pin shaft. The entire trailer is supported on the support surface at the bottom of the tunnel by the track walking device and travels in the existing tunnel under the traction of the locomotive. The excavation main machine on the middle starting trailer is mainly used for downward excavation, support, slag removal, and bottom grouting to form a shaft in the existing tunnel. After the shaft is lined, a wastewater pump house is formed. The trailer carries supporting systems, jacking systems, segment stop and anti-twist devices, main machine recovery systems, segment transportation systems, pump stations, control rooms, and other components, which provide support, power, lubrication, cooling, recovery, and other functions for the excavation main machine.

[0003] In the existing tunnel shaft tunneling machine, the trailer generally travels on rails. The rail travel refers to installing rotatable wheels on the trailer, and the outer cylindrical surface of the wheels is processed with an annular groove. The annular groove rolls on the track support surface of the track. The track is fixed at the bottom of the tunnel, suspended at the top of the tunnel, or fixed at the sides of the tunnel.

[0004] After the existing tunnel shaft tunneling machine is towed by the locomotive to the designated location, the excavation main machine is excavated downward from the center hole at the bottom of the starting trailer. Before breaking the tunnel bottom segment, the track in the existing tunnel needs to be removed. When the shaft excavation in the existing tunnel is completed, the excavation main machine is withdrawn into the existing tunnel, and the starting trailer needs to be removed as soon as possible to pour the shaft lining. However, the lower space of the starting trailer is tight, and the excavation main machine blocks it. At the same time, the segment at the tunnel shaft construction site has been broken, so the removed track cannot be quickly restored. Therefore, the equipment cannot be removed in time, which will affect the lining of the shaft and the construction progress and efficiency. This problem has been a problem for the development of the tunnel shaft tunneling machine. SUMMARY

[0005] One objective of this invention is to provide a trailer for a tunnel boring machine (TBM) that solves the problem that existing TBM trailers cannot be quickly removed from the site after the shaft excavation is completed. Another objective of this invention is to provide a TBM that solves the problem that existing TBM trailers cannot be quickly removed from the site after the shaft excavation is completed. A further objective of this invention is to provide a method for removing a TBM from the site, solving the problem that existing construction methods cannot quickly remove the TBM after excavation.

[0006] The trailer for the tunnel boring machine in this invention adopts the following technical solution:

[0007] The trailer of the tunnel boring machine includes a frame, on which a track traveling device is provided for supporting the trailer on a track inside the tunnel; side wall traveling devices are provided on both sides of the frame in the left and right directions, which are used to roll obliquely downward to support the trailer against the tunnel side wall. At least one of the track traveling device and the side wall traveling device is adjustable in height, so as to switch between track support and side wall support by changing its own support height.

[0008] The beneficial effects of the above technical solution are that by setting up a sidewall walking device, and setting at least one of the track walking device and the sidewall walking device to be adjustable in height, the trailer can switch between track support and sidewall support by relying on the change in the support height of the track walking device and / or the sidewall walking device itself. Thus, when the site is cleared after the excavation of the shaft, it can switch to the sidewall support mode and rely on the sidewall walking device to roll diagonally downwards to support the trailer on the tunnel sidewall, thereby realizing the transfer of the trailer. Compared with the existing technology of first restoring the track and then relying on the track walking device for site clearing, there is no need to wait for the track to be restored, which can save waiting time, realize rapid site clearing, and help improve construction progress and construction efficiency.

[0009] As a further defined technical solution: the vehicle frame is provided with a lifting support device for supporting the bottom of the tunnel. The lifting support device includes a support shoe that can move up and down. The support shoe has a supported state for lifting the vehicle frame and supporting the vehicle frame, and a retracted state for releasing the support of the vehicle frame.

[0010] The beneficial effects of the aforementioned further defined technical solution are that when the lifting support device is in the supported state, it can lift and support the vehicle frame. At this time, the track travel device and the side wall travel device do not bear the support force, and the lifting adjustment can be more easily carried out to realize the switching between track support and side wall support. Furthermore, at this time, the lifting adjustment of the track travel device and the side wall travel device does not need to support the trailer. It only needs to drive the track travel device and the side wall travel device to lift themselves. Therefore, a lifting drive device with a smaller output load can be used, which is beneficial to meet the working conditions of the narrow space on the trailer.

[0011] As a further defined technical solution: the track walking device and / or side wall walking device rely on a screw and nut mechanism to achieve lifting and lowering.

[0012] The beneficial effect of the above-mentioned further defined technical solution is that the screw and nut mechanism can achieve precise adjustment and has a self-locking function, which can ensure the support stability of the track walking device and the side wall walking device.

[0013] As a further defined technical solution: the lifting support device includes an operating handle for manual lifting.

[0014] The beneficial effect of the above-mentioned further defined technical solution is that, due to the installation of the lifting support device, the driving force required for the lifting adjustment of the track walking device and the side wall walking device is smaller, and the use of the operating handle can simplify the structure and reduce costs.

[0015] As a further defined technical solution: the sidewall walking device includes sidewall walking wheels, which can extend and retract obliquely to achieve changes in their height.

[0016] The beneficial effect of the aforementioned further defined technical solution is that the oblique movement of the sidewall traveling wheels can better support the tunnel sidewall along the normal direction of the tunnel inner wall, thereby improving the support stability.

[0017] As a further defining technical solution: the outer circumferential surface of the sidewall traveling wheel is drum-shaped.

[0018] The beneficial effect of the above-mentioned further defined technical solution is that the outer circumferential surface of the sidewall traveling wheel is drum-shaped, which can better fit the tunnel sidewall, distribute the force evenly, and provide good support stability.

[0019] As a further defined technical solution: the outer surface of the sidewall traveling wheel of the sidewall traveling device has an elastic material layer to ensure that the tunnel sidewall is subjected to uniform force.

[0020] The beneficial effect of the above-mentioned further defined technical solution is that the elastic material layer can further even out the stress on the tunnel sidewall and can solve the problem of local unevenness of the tunnel sidewall, thus ensuring the stability of the trailer during movement.

[0021] The tunnel boring machine in this invention adopts the following technical solution:

[0022] The tunnel boring machine includes a main excavator and a rear support system for connecting to the machine. The rear support system includes a trailer, which includes a frame. The frame is equipped with a track-traveling device for supporting the trailer on a track inside the tunnel. Side wall-traveling devices are provided on both sides of the frame in the left and right directions. The side wall-traveling devices are used to roll obliquely downwards to support the trailer against the tunnel sidewall. At least one of the track-traveling device and the side wall-traveling device is adjustable in height to switch between track support and side wall support by changing its own support height.

[0023] The beneficial effects of the above technical solution are that by setting up a sidewall walking device, and setting at least one of the track walking device and the sidewall walking device to be adjustable in height, the trailer can switch between track support and sidewall support by relying on the change in the support height of the track walking device and / or the sidewall walking device itself. Thus, when the site is cleared after the excavation of the shaft, it can switch to the sidewall support mode and rely on the sidewall walking device to roll diagonally downwards to support the trailer on the tunnel sidewall, thereby realizing the transfer of the trailer. Compared with the existing technology of first restoring the track and then relying on the track walking device for site clearing, there is no need to wait for the track to be restored, which can save waiting time, realize rapid site clearing, and help improve construction progress and construction efficiency.

[0024] As a further defined technical solution: the vehicle frame is provided with a lifting support device for supporting the bottom of the tunnel. The lifting support device includes a support shoe that can move up and down. The support shoe has a supported state for lifting the vehicle frame and supporting the vehicle frame, and a retracted state for releasing the support of the vehicle frame.

[0025] The beneficial effects of the aforementioned further defined technical solution are that when the lifting support device is in the supported state, it can lift and support the vehicle frame. At this time, the track travel device and the side wall travel device do not bear the support force, and the lifting adjustment can be more easily carried out to realize the switching between track support and side wall support. Furthermore, at this time, the lifting adjustment of the track travel device and the side wall travel device does not need to support the trailer. It only needs to drive the track travel device and the side wall travel device to lift themselves. Therefore, a lifting drive device with a smaller output load can be used, which is beneficial to meet the working conditions of the narrow space on the trailer.

[0026] As a further defined technical solution: the track walking device and / or side wall walking device rely on a screw and nut mechanism to achieve lifting and lowering.

[0027] The beneficial effect of the above-mentioned further defined technical solution is that the screw and nut mechanism can achieve precise adjustment and has a self-locking function, which can ensure the support stability of the track walking device and the side wall walking device.

[0028] As a further defined technical solution: the lifting support device includes an operating handle for manual lifting.

[0029] The beneficial effect of the above-mentioned further defined technical solution is that, due to the installation of the lifting support device, the driving force required for the lifting adjustment of the track walking device and the side wall walking device is smaller, and the use of the operating handle can simplify the structure and reduce costs.

[0030] As a further defined technical solution: the sidewall walking device includes sidewall walking wheels, which can extend and retract obliquely to achieve changes in their height.

[0031] The beneficial effect of the aforementioned further defined technical solution is that the oblique movement of the sidewall traveling wheels can better support the tunnel sidewall along the normal direction of the tunnel inner wall, thereby improving the support stability.

[0032] As a further defining technical solution: the outer circumferential surface of the sidewall traveling wheel is drum-shaped.

[0033] The beneficial effect of the above-mentioned further defined technical solution is that the outer circumferential surface of the sidewall traveling wheel is drum-shaped, which can better fit the tunnel sidewall, distribute the force evenly, and provide good support stability.

[0034] As a further defined technical solution: the outer surface of the sidewall traveling wheel of the sidewall traveling device has an elastic material layer to ensure that the tunnel sidewall is subjected to uniform force.

[0035] The beneficial effect of the above-mentioned further defined technical solution is that the elastic material layer can further even out the stress on the tunnel sidewall and can solve the problem of local unevenness of the tunnel sidewall, thus ensuring the stability of the trailer during movement.

[0036] The method for removing the tunnel boring machine from the site in this invention adopts the following technical solution:

[0037] The method for removing a tunnel boring machine from the site involves disengaging the track-traveling device on the trailer frame of the tunnel boring machine from the track inside the tunnel, and using the sidewall-traveling device to support the tunnel sidewall at an angle downwards. The sidewall-traveling device supports the weight of the trailer and moves it away from the excavation location.

[0038] The beneficial effect of the above technical solution is that by setting up a sidewall walking device, it is possible to switch to the sidewall support mode when the site is cleared after the excavation of the underground shaft is completed. The trailer can be transferred by relying on the sidewall walking device to roll downwards and support the trailer on the tunnel sidewall. Compared with the existing technology of first restoring the track and then relying on the track walking device for site clearing, there is no need to wait for the track to be restored, which can save waiting time, achieve rapid site clearing, and help improve construction progress and construction efficiency.

[0039] As a further defined technical solution: at least one of the track walking device and the side wall walking device is adjustable in height, and the switching between track support and side wall support is achieved by changing the support height of the track walking device and / or the side wall walking device.

[0040] The beneficial effect of the above-described further defined technical solution is that at least one of the track walking device and the side wall walking device is adjustable in height, and the trailer can switch between track support and side wall support by relying on the change in the support height of the track walking device and / or the side wall walking device itself. The switching operation is convenient and the switching efficiency is high.

[0041] As a further refined technical solution: when switching between track support and sidewall support, the vehicle frame is first supported at the bottom of the tunnel by the lifting support device, so that both the track traveling device and the sidewall traveling device are suspended in the air, and then the switching is carried out.

[0042] The beneficial effects of the aforementioned further defined technical solution are that the lifting support device can raise and support the vehicle frame. At this time, the track travel device and the side wall travel device do not bear the support force, and the lifting adjustment can be more easily carried out to achieve the switching between track support and side wall support. Furthermore, at this time, the lifting adjustment of the track travel device and the side wall travel device does not need to support the trailer. It only needs to drive the track travel device and the side wall travel device to lift themselves. Therefore, a lifting drive device with a smaller output load can be used, which is beneficial to meet the working conditions of the narrow space on the trailer.

[0043] As a further refined technical solution: relying on the support boots on the trailer to suspend both the track-walking device and the side-wall-walking device in the air.

[0044] The beneficial effect of the above-mentioned further defined technical solution is that it eliminates the need for additional lifting support devices, which helps to simplify the structure, reduce space occupation, and lower costs. Attached Figure Description

[0045] Figure 1 This is a front view of Embodiment 1 of the trailer for the tunnel boring machine in this invention;

[0046] Figure 2 yes Figure 1 Top view;

[0047] Figure 3 This is a schematic diagram of the trailer in track-supported mode;

[0048] Figure 4 This is a schematic diagram of the trailer in side-wall support mode;

[0049] Figure 5 This is a schematic diagram of the lifting support device in the supported state;

[0050] Figure 6 This is a schematic diagram of the lifting support device in the retracted state.

[0051] Figure 7 This is a front view of embodiment 2 of the trailer for the tunnel boring machine in this invention;

[0052] Figure 8 This is a front view of embodiment 3 of the trailer for the tunnel boring machine in this invention.

[0053] The names of the components corresponding to the reference numerals in the figure are as follows: 10. Frame; 11. Flange connector; 12. Rectangular hole; 13. Support device connector; 20. Track traveling device; 21. First bracket; 22. First clamping plate; 23. First axle; 24. First sliding bushing; 25. Steel wheel; 26. Annular groove; 30. Side wall traveling device; 31. Hub; 32. Rubber sleeve; 33. Second axle; 34. Second sliding bushing; 35. Second clamping plate; 36. Second bracket; 40. Telescopic mechanism; 41. Outer sleeve; 42. Inner sleeve; 43. Adjusting screw; 44. Adjusting nut; 45. Drive device; 46. Thrust bearing; 47. Traveling device connector; 50. Lifting support device; 51. Support shoe bracket; 52. Cylinder body; 53. Support shoe; 54. Cylinder piston rod; 80. Track; 81. Track support surface; 90. Tunnel inner wall. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0056] It should be noted that, in specific embodiments of the present invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising a…" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] In the description of this invention, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the body, or it can be separately arranged from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0059] The present invention will be further described in detail below with reference to embodiments.

[0060] Example 1 of the trailer for the tunnel boring machine in this invention:

[0061] like Figure 1 , Figure 2 and Figure 3 As shown, the trailer for the tunnel boring machine includes a frame 10, which serves as the main frame of the trailer and also functions as the main working platform of the tunnel boring machine. As per existing technology, the top center of the frame 10 has a main unit passage hole for the excavation main unit to pass through in the vertical direction. The front-rear direction of the frame 10 (the direction of travel of the trailer, corresponding to...) Figure 1Flange connecting seats 11 are provided on both sides (left and right directions) at the bottom of the frame 10. A rail traveling device 20 is connected to the flange connecting seats 11. The rail traveling device 20 is used to support the trailer on the support surface formed by the rail 80 at the bottom of the tunnel to realize rail-based movement of the trailer. Side wall traveling devices 30 are also provided on both sides (front and rear directions) at the bottom of the frame 10. The side wall traveling devices 30 are used to roll diagonally downward to support the trailer on the tunnel sidewall to support the trailer and realize trackless movement.

[0062] like Figure 1 , Figure 3 The track-walking device 20 includes a first bracket 21, a first clamping plate 22, a first axle 23, a first sliding bushing 24, and a steel wheel 25. The top plate of the first bracket 21 is fixed to the corresponding flange connecting seat 11 of the frame 10. The outer cylindrical surface of the first axle 23 is adapted to the inner hole of the first sliding bushing 24 to achieve rotation. The outer circle of the first sliding bushing 24 is in close contact with the inner hole of the steel wheel 25. The outer cylindrical surface of the steel wheel 25 is machined with an annular groove 26, which can roll on the track support surface 81 and be positioned left and right. The two ends of the first axle 23 are fixed to the two upright plates of the first bracket 21 by the first clamping plate 22 to prevent the first axle 23 from rotating.

[0063] like Figure 1 , Figure 2 The side-wall walking device 30 is provided in four places. For example... Figure 3 Each sidewall traveling device 30 includes a hub 31, a rubber sleeve 32, a second axle 33, a second sliding bushing 34, a second clamping plate 35, and a second bracket 36. The outer cylindrical surface of the second axle 33 is fitted with the inner hole of the second sliding bushing 34 to achieve rotation. The outer circle of the second sliding bushing 34 is in close contact with the inner hole of the hub 31. The two ends of the second axle 33 are fixed to the two upright plates of the second bracket 36 by the second clamping plate 35. The hub 31 is fitted with a rubber sleeve 32 to form a sidewall traveling wheel. The outer contour surface of the rubber sleeve 32 is machined into a drum shape for adhering to the sidewall of the tunnel inner wall 90 and traveling along the sidewall.

[0064] The side-mounted wheels can extend and retract diagonally to change their height. Specifically, for example... Figure 1 , Figure 4The frame 10 has a rectangular hole 12 on each of its front and rear ends and on its left and right sides for mounting the telescopic mechanism 40. The lower end of the telescopic mechanism 40 has a flange-type bracket connecting seat for fixing the top plate of the second bracket 36 on the side wall traveling device 30, thereby realizing the lifting and lowering adjustment of the side wall traveling device during telescopic movement. The telescopic mechanism 40 includes an outer sleeve 41, an inner sleeve 42, an adjusting screw 43, an adjusting nut 44, a drive device 45, a thrust bearing 46, and a traveling device connecting seat 47. The outer sleeve 41 is fixed in the rectangular hole 12 on the side of the bottom platform of the frame 10. The cross section of the outer sleeve 41 is a rectangular hollow section, and its outer contour matches the rectangular hole 12. The top of the outer sleeve 41 is fixed with an adjusting nut 44, and the adjusting screw 43 is installed inside the adjusting nut 44. The upper end of the adjusting screw 43 extends obliquely upward from the outer sleeve 41 and is connected to the drive device 45. The drive device 45 is an operating handle for manual lifting and lowering. The inner sleeve 42 is guided and fitted into the rectangular hole formed by the outer sleeve 41. A traveling device connecting seat 47 is provided below the inner sleeve 42, connecting it to the side wall traveling device 30. The adjusting screw 43 is connected to the inner sleeve 42 via a thrust bearing 46. When height adjustment is required, the drive device 45 drives the adjusting screw 43 to rotate. The adjusting screw 43 extends and retracts in cooperation with the adjusting nut 44, thereby driving the inner sleeve 42 to extend and retract, ultimately achieving height adjustment of the side wall traveling device 30.

[0065] like Figure 1 , Figure 5 , Figure 6 The chassis 10 is also equipped with two support device connecting seats 13, one at the front and one at the rear, for installing the lifting support device 50. The lifting support device 50 is an existing structure on the existing trailer, designed to stabilize the tunnel structure and prevent changes in ground pressure after the excavation of the manhole. The lifting support device 50 includes a support shoe bracket 51, a cylinder body 52, a support shoe 53, and a cylinder piston rod 54. The upper part of the support shoe bracket 51 has an upper flange for fixing to the support device connecting seat 13 at the bottom of the chassis 10, and the lower part of the support shoe bracket 51 has a lower flange for connecting to the flange structure at the bottom of the cylinder body 52. ​​The end of the cylinder piston rod 54 is rigidly connected to the top of the support shoe 53. The outer contour of the bottom of the support shoe 53 matches the inner wall 90 of the tunnel, and a track notch is provided in the middle for avoiding the track 80.

[0066] The operating method for tunnel boring machines using the aforementioned trailers is as follows:

[0067] S1: Initial state, the track walking device 20 is supported on the track 80, the telescopic mechanism 40 is in the retracted state, the drum-shaped surface of the rubber jacket 32 ​​is separated from the tunnel inner wall 90, the hydraulic cylinder piston rod 54 is in the retracted state, the outer contour of the support shoe 53 is separated from the tunnel inner wall 90, and is in the retracted state of releasing the support of the frame 10.

[0068] S2: The locomotive pulls the car frame 10 forward along the track support surface 81 to the proposed construction position;

[0069] S3: Remove track 80 at the proposed construction location;

[0070] S4: The piston rod 54 of the hydraulic cylinder drives the support shoe 53 to extend outward and tighten the inner wall 90 of the tunnel. After the annular groove 26 of the steel wheel 25 separates from the track support surface 81 by 20-30mm, the piston rod 54 of the hydraulic cylinder stops working.

[0071] S5: The excavator starts to construct the underground shaft. After the excavator completes the underground shaft construction, the drive device 45 drives the adjusting screw 43 to rotate. The adjusting screw 43 pushes the inner sleeve 42 outward through the thrust bearing 46 until the drum-shaped surface of the rubber outer sleeve 32 fits against the inner wall 90 of the tunnel and then stops working.

[0072] S6: The piston rod 54 of the hydraulic cylinder drives the support shoe 53 to retract. The outer contour surface of the support shoe 53 separates from the inner wall 90 of the tunnel by 100-150mm and then stops working. At this time, the trailer load has been completely transferred to the side wall traveling device 30.

[0073] S7: The locomotive tows the frame 10, the wheel hub 31 and the rubber jacket 32 ​​together and rolls along the inner wall 90 of the tunnel. The trailer moves forward and leaves the construction position of the underground shaft.

[0074] S8: When the track 80 is below the annular groove 26 of the steel wheel 25 at the rear of the trailer, the locomotive stops moving forward;

[0075] S9: The piston rod 54 of the hydraulic cylinder drives the lower support shoe 53 to extend outward and tighten the inner wall 90 of the tunnel. The operation stops after the drum-shaped surface of the rubber jacket 32 ​​separates from the inner wall 90 of the tunnel by 10-20mm.

[0076] S10: The drive device 45 drives the adjusting screw 43 to rotate in the opposite direction. The adjusting screw 43 pulls the inner sleeve 42 inward through the thrust bearing 46 until the drum-shaped surface of the rubber outer sleeve 32 is separated from the inner wall 90 of the tunnel by 100-150mm and then stops working.

[0077] S11: The piston rod 54 of the hydraulic cylinder drives the lower support shoe 53 to retract. After the annular groove 26 of the steel wheel 25 contacts the track support surface 81, it continues to retract until the piston rod 54 of the hydraulic cylinder is completely retracted.

[0078] S12: The locomotive pulls the car frame 10 along track 80 to the next construction position.

[0079] Example 2 of the trailer for the tunnel boring machine in this invention:

[0080] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the sidewall walking device 30 is height-adjustable, used to switch between track support and sidewall support by changing its own support height. In this embodiment, however, as... Figure 7 As shown, the side wall walking device is fixed on the frame, while the track walking device 20 is adjustable in height. The drive mechanism for adjusting the height of the track walking device 20 is a screw and nut mechanism, which is the same as the adjustment method of the side wall walking device 30 in Embodiment 1.

[0081] Example 3 of the trailer for the tunnel boring machine in this invention:

[0082] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, only the sidewall walking device 30 is adjustable in height. However, in this embodiment, as... Figure 8 Both the track walking device 20 and the side wall walking device 30 can be raised and lowered, and the drive mechanism used to achieve the raising and lowering adjustment is a screw and nut mechanism.

[0083] In other embodiments, the drive mechanism for lifting and lowering the track-walking device and / or the side-wall-walking device may also take other forms, such as using a hydraulic cylinder, which can be driven by an electric pump station or by a manual pump station.

[0084] Example 4 of the trailer for the tunnel boring machine in this invention:

[0085] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the frame is equipped with a lifting support device, which can temporarily support the trailer by driving the support shoe. In this embodiment, the lifting and lowering of the side wall traveling device 30 is achieved directly by the telescopic mechanism 40. When lowering, the side wall traveling device 30 provides support, and when rising, the track traveling device provides support.

[0086] In other embodiments, a separate lifting support device may be set up independently of the existing support boots on the trailer, and temporary support may be provided when switching between track support and side wall support by relying on the separately set lifting support device.

[0087] Example 5 of the trailer for the tunnel boring machine in this invention:

[0088] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the sidewall walking device 30 uses a tilting telescopic method to achieve lifting and lowering adjustment. In this embodiment, the sidewall walking device 30 uses a vertical telescopic method to achieve lifting and lowering adjustment.

[0089] An embodiment of the tunnel boring machine in this invention: The tunnel boring machine includes an excavation host and a rear support system for connecting with the locomotive. The rear support system includes a trailer, which is the trailer described in any embodiment of the trailer of the tunnel boring machine.

[0090] Example 1 of the method for removing a tunnel boring machine from the site in this invention: Example 1 of the method for removing a tunnel boring machine from the site is the operation method of the aforementioned trailer-mounted tunnel boring machine, which will not be described in detail here.

[0091] In other embodiments of the tunnel boring machine (TBM) removal method, the track travel device 20 can be height-adjustable. When switching between track support and sidewall support, the track travel device 20 and the support shoe 53 work together, and the switching process is similar to that in Embodiment 1 of the TBM removal method. In other embodiments, both the track travel device 20 and the sidewall travel device 30 can be height-adjustable. When switching between track support and sidewall support, the track travel device 20 and the sidewall travel device 30 work together with the support shoe, and the switching process is similar to that in Embodiment 1 of the TBM removal method.

[0092] In other embodiments of the tunnel boring machine removal method, when the output load of the telescopic mechanism 40 meets the lifting requirements of the trailer, the switching between track support and side wall support can be achieved directly by relying on the telescopic mechanism 40 to drive the track walking device 20 and / or the side wall walking device 30 to lift and lower, without using the lifting support device 50 for temporary auxiliary support.

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A trailer for a tunnel boring machine, comprising a frame, wherein the top center of the frame has a main excavator passage hole for the main excavator to pass through in a vertical direction, and the frame is equipped with a track-traversing device; characterized in that, The track-walking device is used to support the trailer on the track-formed support surface at the bottom of the tunnel, enabling the trailer to travel on rails. Sidewall-walking devices are provided on both sides of the chassis in the left and right directions. Each sidewall-walking device includes sidewall-walking wheels that can extend and retract diagonally outwards to change their height. The sidewall-walking devices are used to roll diagonally downwards to support the trailer against the tunnel sidewalls. At least one of the track-walking device and the sidewall-walking device is height-adjustable, allowing switching between track support and sidewall support based on changes in its support height. The chassis is equipped with connecting seats at both the front and rear supports for support at the very bottom of the tunnel. The lifting support device includes a vertically movable support shoe. The support shoe has a supported state for raising and supporting the vehicle frame and a retracted state for releasing the support of the vehicle frame. The outer contour of the bottom of the support shoe matches the inner wall of the tunnel, and there is a track gap in the middle for avoiding the track. When the site is cleared after the excavation of the underground shaft is completed, it switches to the side wall support mode. It relies on the side wall traveling device to roll diagonally downward to support the tunnel side wall, realizing the transfer of the trailer. When switching between track support and side wall support, it first relies on the lifting support device on the vehicle frame to support the bottom of the tunnel, so that both the track traveling device and the side wall traveling device are suspended in the air, and then the switch is performed.

2. The trailer for the tunnel boring machine according to claim 1, characterized in that, The track-walking device and / or side-wall-walking device achieve lifting and lowering by means of a screw and nut mechanism.

3. The trailer for the tunnel boring machine according to claim 1, characterized in that, The lifting support device includes an operating handle for manual lifting.

4. The trailer for the tunnel boring machine according to claim 1, characterized in that, The outer circumference of the sidewall traveling wheel is drum-shaped.

5. The trailer for the tunnel boring machine according to any one of claims 1 to 4, characterized in that, The outer surface of the sidewall traveling wheels of the sidewall traveling device has an elastic material layer to ensure that the tunnel sidewall is subjected to uniform force.

6. A tunnel boring machine, comprising an excavation main unit and a supporting system for connection with the machine, the supporting system including a trailer, characterized in that, The trailer includes a frame with a centrally located pass-through hole at the top for the excavator to pass vertically. The frame is equipped with a rail-mounted traveling device. This device supports the trailer on a rail-based support surface at the bottom of the tunnel. Sidewall traveling devices are located on both sides of the frame, each including sidewall wheels that can extend and retract diagonally to change their height. These wheels roll diagonally downwards to support the trailer against the tunnel sidewalls. At least one of the rail-mounted and sidewall traveling devices is adjustable in height, allowing for switching between rail and sidewall support based on changes in their support height. The frame has two access points for the front and rear rails. The support device connecting seat is equipped with a lifting support device for supporting the bottom of the tunnel. The lifting support device includes a support shoe that can move up and down. The support shoe has a supporting state for lifting and supporting the vehicle frame and a retracted state for releasing the support of the vehicle frame. The outer contour of the bottom of the support shoe matches the inner wall of the tunnel, and there is a track gap in the middle for avoiding the track. When the site is cleared after the excavation of the underground shaft is completed, it switches to the side wall support mode. It relies on the side wall traveling device to roll diagonally downward to support the tunnel side wall to realize the transfer of the trailer. When switching between track support and side wall support, it first relies on the lifting support device on the vehicle frame to support the bottom of the tunnel, so that both the track traveling device and the side wall traveling device are suspended in the air, and then the switch is made.

7. The tunnel boring machine according to claim 6, characterized in that, The track-walking device and / or side-wall-walking device achieve lifting and lowering by means of a screw and nut mechanism.

8. The tunnel boring machine according to claim 6, characterized in that, The lifting support device includes an operating handle for manual lifting.

9. The tunnel boring machine according to claim 6, characterized in that, The outer circumference of the sidewall traveling wheel is drum-shaped.

10. The tunnel boring machine according to any one of claims 6 to 9, characterized in that, The outer surface of the sidewall traveling wheels of the sidewall traveling device has an elastic material layer to ensure that the tunnel sidewall is subjected to uniform force.

11. A method for removing a tunnel boring machine from the site, characterized in that, Applied to the tunnel boring machine according to any one of claims 6-10; in the initial state, the track walking device is supported on the track, the outer contour of the support shoe is separated from the inner wall of the tunnel, and it is in the retracted state of releasing the support of the frame; when withdrawing from the site, the track walking device on the frame of the trailer of the tunnel boring machine, which is used to support the track in the tunnel, is disengaged from the track, and the side wall walking device, which is used to support the tunnel side wall at an angle downward, rolls downward to support the tunnel side wall, and the weight of the trailer is supported by the side wall walking device and the trailer is moved away from the excavation position; When switching between track support and sidewall support, the vehicle is first supported at the bottom of the tunnel by the lifting support device on the chassis, so that both the track travel device and the sidewall travel device are suspended in the air, and then the switching is carried out.

Images