A multi-mode main drive of a tunneling machine and a tunneling machine having the same

Abstract

The application relates to a main drive of a multi-mode tunneling machine and a tunneling machine with the same, wherein the main drive comprises a driving mechanism, a main bearing, a gearbox and a connecting flange; the driving mechanism is connected to the main bearing; the gearbox is installed on an outer ring of the main bearing; and an inner ring of the main bearing can be connected to a cutter head flange assembly of the tunneling machine through the connecting flange. An outer sealing system and an inner sealing system are arranged on the connecting flange; an outer sealing cavity is formed between the outer sealing system and the cutter head flange assembly; and an inner sealing cavity is formed between the inner sealing system and the cutter head flange assembly. The main drive of the multi-mode tunneling machine can adapt to different stratum working conditions, so that the tunneling machine can realize 'one machine with multiple functions', can replace different types of tunneling machines to perform construction on different stratum working conditions, greatly saves construction cost, has better sealing effect, is safer, and is more convenient to overhaul and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underground tunnel construction, and in particular to a multi-mode tunneling machine main drive and a tunneling machine with the same. BACKGROUND

[0002] The tunneling machine is one of the important equipment for underground tunnel construction, and has high construction efficiency, high automation degree and high safety, and is widely used at present.

[0003] At present, complex strata and long-distance tunnels are increasing, and the tunneling machine only suitable for a single stratum type has obvious development bottlenecks. The main drive is an important core component of the tunneling machine, which is the "heart" of the tunneling machine. Its stability, reliability and safety are one of the important guarantees for the safe, stable, reliable and efficient operation of the tunneling machine.

[0004] The main drive sealing system at the present stage is fixedly assembled, and the sealing effect is poor. In the long-distance tunnel construction process, it is easy to fail, and there are many restrictions for replacing the seal in the tunnel, and even the cutter head needs to be disassembled, which has a long construction period and is difficult to implement, which brings great difficulties and many hidden dangers to the safe, stable, reliable and efficient operation of the tunneling machine.

[0005] Therefore, there is an urgent need for a multi-mode tunneling machine main drive with high safety suitable for different geological conditions and long-distance tunneling process. SUMMARY

[0006] (I) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a multi-mode tunneling machine main drive, which solves the technical problems of low safety and construction efficiency in the process of long-distance tunneling of the prior art which is suitable for a single stratum.

[0008] (II) Technical scheme

[0009] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present application comprises:

[0010] On the one hand, the present application provides a multi-mode tunneling machine main drive, which comprises a main bearing, a gearbox, a connecting flange and a driving mechanism, the driving mechanism is connected to the main bearing, the gearbox is installed on the outer ring of the main bearing, and the inner ring of the main bearing can be connected to the cutter head flange assembly of the tunneling machine body through the connecting flange. The outer sealing system and the inner sealing system are detachably installed on the connecting flange, the outer sealing cavity is formed between the outer sealing system and the cutter head flange assembly, and the inner sealing cavity is formed between the inner sealing system and the cutter head flange assembly.

[0011] Optionally, the outer sealing system comprises a first outer sealing ring, a second outer sealing ring, a first outer sealing ring, an outer sealing locking mechanism, a second outer sealing ring and an outer sealing connecting piece. The first outer sealing ring is installed at the front end of the main bearing, the second outer sealing ring is sleeved outside the connecting flange, a plurality of first outer sealing rings are uniformly sleeved outside the second outer sealing ring along the axial direction of the main drive, and a plurality of outer sealing rings are connected to the first outer sealing ring through the outer sealing locking mechanism. The first outer sealing ring is connected to the second outer sealing ring, and the second outer sealing ring can be fixed to the rear side of the cutter flange assembly through the outer sealing connecting piece.

[0012] Optionally, a first multi-medium lubrication pressure maintaining channel is arranged inside the second outer sealing ring, and the first multi-medium lubrication pressure maintaining channel is in communication with the outer sealing cavity.

[0013] Optionally, the inner sealing system comprises an inner sealing ring, a first inner sealing ring, an inner sealing locking mechanism, a second inner sealing ring, an inner sealing connecting piece, an inner sealing support assembly and an inner sealing support ring. The inner sealing ring is installed at the front side of the main bearing, a plurality of first inner sealing rings are uniformly sleeved outside the inner sealing ring along the axial direction of the main drive, and a plurality of first inner sealing rings are connected to the connecting flange through the inner sealing locking mechanism. The inner sealing support ring is connected to the bottom of the inner sealing ring, the inner sealing support assembly is connected to the inner sealing support ring, and the second inner sealing ring can be fixedly connected to the cutter flange assembly through the inner sealing connecting piece.

[0014] Optionally, a second multi-medium lubrication pressure maintaining channel is arranged inside the inner sealing ring, and the second multi-medium lubrication pressure maintaining channel is in communication with the inner sealing cavity.

[0015] Optionally, the main bearing is a multi-row roller main bearing.

[0016] Optionally, the driving mechanism comprises a driving element, a torque conversion device, a speed reducer and a transmission member. The driving element is connected to the torque conversion device, the torque conversion device is connected to the speed reducer, and the speed reducer is connected to the main bearing through the transmission member.

[0017] Optionally, the driving element is reversely connected to the torque conversion device through a spline shaft.

[0018] In another aspect, the application provides a tunneling machine comprising the above-mentioned multi-mode tunneling machine main drive and the tunneling machine main body, and the multi-mode tunneling machine main drive is connected to the cutter flange assembly of the tunneling machine main body.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the application are:

[0021] The application provides a multi-mode tunneling machine main drive which is installed at the rear of the tunneling machine, can adjust the pressure in the inner sealing cavity and the outer sealing cavity through the independent inner sealing system and outer sealing system, can adapt to different stratum conditions, can improve the sealing effect of the multi-mode tunneling machine main drive through the inner sealing system and outer sealing system, can effectively prevent sundries such as rock, soil, sand, mud and the like from entering the driving part of the multi-mode tunneling machine main drive in the tunneling process, and can ensure that the multi-mode tunneling machine main drive can be safely and stably operated in long-distance tunnel construction, thereby indirectly improving the construction efficiency. The detachable inner sealing system and outer sealing system can realize quick emergency maintenance and replacement of the inner sealing system and outer sealing system without disassembling the cutter flange assembly. Compared with the prior art, the multi-mode tunneling machine main drive can adapt to different stratum conditions, can realize "one machine with multiple uses", can replace different types of tunneling machines to construct different stratum conditions, can greatly save the construction cost, and has better sealing effect, higher safety and more convenient maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the multi-mode tunneling machine main drive in the embodiment 1 of the application.

[0023]

Explanation of reference signs

[0024] 1: main bearing;

[0025] 2: connecting flange;

[0026] 31: driving element; 32: torque conversion device; 33: speed reducer; 34: transmission member; 35: gearbox;

[0027] 4: cutter flange assembly;

[0028] 51: first outer sealing ring; 52: second outer sealing ring; 53: first outer sealing ring; 54: outer sealing locking mechanism; 55: second outer sealing ring; 56: outer sealing connecting member; 57: first multi-medium lubrication pressure maintaining channel;

[0029] 61: inner sealing ring; 62: first inner sealing ring; 63: inner sealing locking mechanism; 64: second inner sealing ring; 65: inner sealing connecting member; 66: inner sealing support assembly; 67: inner sealing support ring; 68: second multi-medium lubrication pressure maintaining channel. DETAILED DESCRIPTION

[0030] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0031] Example 1:

[0032] like Figure 1 As shown, this embodiment of the invention provides a main drive for a multi-mode tunneling machine, including a drive mechanism, a main bearing 1, a gearbox 35, and a connecting flange 2. The drive mechanism is connected to the main bearing 1, the gearbox 35 is mounted on the outer ring of the main bearing 1, and the inner ring of the main bearing 1 is connected to the cutterhead flange assembly 4 of the tunneling machine body via the connecting flange 2, so as to drive the cutterhead flange assembly 4 to rotate and excavate the tunnel. An outer sealing system and an inner sealing system are detachably installed on the connecting flange 2. An outer sealing cavity is formed between the outer sealing system and the cutterhead flange assembly 4, and an inner sealing cavity is formed between the inner sealing system and the cutterhead flange assembly 4. The main bearing 1 is a multi-row roller bearing, which can stabilize the movement of the rollers during high-speed rotation and reduce the heat generation and friction loss of the main bearing 1.

[0033] Specifically, this embodiment provides a main drive for a multi-mode tunneling machine (TBM). Installed behind the TBM, it utilizes independent internal and external sealing systems to adjust the pressure within the inner and outer sealing cavities, adapting to different geological conditions. These systems enhance the sealing performance of the main drive, effectively preventing debris such as slag, soil, sand, and mud from entering the drive mechanism during excavation. This ensures safe and stable operation of the main drive during long-distance tunnel construction, indirectly improving construction efficiency. The detachable internal and external sealing systems allow for rapid emergency repairs and replacements without disassembling the cutterhead flange assembly. Compared to existing technologies, this multi-mode tunneling machine's main drive can adapt to different geological conditions, enabling the tunneling machine to achieve "one machine for multiple uses." It can replace different types of tunneling machines for construction in different geological conditions, greatly saving construction costs. Moreover, it has better sealing performance, higher safety, and faster and more convenient inspection and maintenance.

[0034] Furthermore, such as Figure 1As shown, the outer sealing system comprises a first outer sealing ring 51, a second outer sealing ring 52, a plurality of first outer sealing rings 53, an outer sealing locking mechanism 54, a second outer sealing ring 55 and an outer sealing connecting piece 56. The first outer sealing ring 51 is detachably mounted on the front end of the main bearing 1, the second outer sealing ring 52 is detachably sleeved on the outside of the connecting flange 2, the plurality of first outer sealing rings 53 are detachably sleeved on the outside of the second outer sealing ring 52 along the axial direction of the main drive, and the plurality of first outer sealing rings 53 are detachably connected to the first outer sealing ring 51 through the outer sealing locking mechanism 54. In the embodiment, the first outer sealing ring 53 is connected to the outer sealing locking mechanism 54 through the isolation ring, the distance between the adjacent two first outer sealing rings 53 can be flexibly adjusted through the outer sealing locking mechanism 54, when the connecting flange 2 is worn, the first outer sealing ring 53 is staggered with the wear position to continue to ensure the sealing performance. The first outer sealing ring 51 is connected to the second outer sealing ring 55, the second outer sealing ring 55 can be detachably fixed to the rear side of the cutter flange assembly 4 through the outer sealing connecting piece 56, the first outer sealing ring 51, the second outer sealing ring 52, the first outer sealing ring 53 and the second outer sealing ring 55 form an outer sealing cavity with the cutter flange assembly 4. Among them, the first multi-medium lubrication pressure maintaining channel 57 is arranged in the second sealing ring, and the first multi-medium lubrication pressure maintaining channel 57 communicates with the outer sealing cavity. Through the first multi-medium lubrication pressure maintaining channel 57, the lubricating medium is transported or extracted into the outer sealing cavity, so as to adjust the pressure in the outer sealing cavity. In the embodiment, the first outer sealing ring 51 and the second outer sealing ring 52 are made of multi-element composite material, the first outer sealing ring 53 is made of material with high durability, and the second outer sealing ring 55 is made of composite material with high durability.

[0035] Further, as Figure 1As shown, the inner sealing system includes an inner sealing ring 61, a first inner sealing ring 62, an inner sealing locking mechanism 63, a second inner sealing ring 64, an inner sealing connecting piece 65, an inner sealing support assembly 66 and an inner sealing support ring 67. The inner sealing ring 61 is detachably mounted on the front side of the main bearing 1, a plurality of first inner sealing rings 62 are detachably sleeved on the outer side of the inner sealing ring 61 along the axial direction of the main drive, and the plurality of first inner sealing rings 62 are detachably connected to the connecting flange 2 through the inner sealing locking mechanism 63. In this embodiment, the first inner sealing ring 62 is connected to the inner sealing locking mechanism 63 through the isolation ring, the distance between two adjacent first inner sealing rings 62 can be flexibly adjusted through the inner sealing locking mechanism 63, and when the connecting flange 2 is worn, the first inner sealing ring 62 can be staggered from the wear position to continue to ensure the sealing performance. The inner sealing support ring 67 is connected to the bottom of the inner sealing ring 61, the inner sealing support assembly 66 is connected to the inner sealing support ring 67, and the second inner sealing ring 64 is detachably fixedly connected to the cutter disc flange assembly 4 through the inner sealing connecting piece 65. During the tunneling process, the inner sealing connecting piece 65 can be directly fixedly connected to the cutter disc flange assembly 4 as the stratum changes, the outside and the inner sealing cavity are completely shielded, the adaptive and flexible connection mode is realized for different strata, and the service life of the inner sealing system can also be effectively prolonged. The inner sealing ring 61 and the first inner sealing ring 62 form an inner sealing cavity together with the cutter disc flange assembly 4. The second multi-medium lubricating pressure maintaining channel 68 is arranged in the inner sealing ring 61 and communicates with the inner sealing cavity. Lubricating medium is delivered or extracted into the inner sealing cavity through the second multi-medium lubricating pressure maintaining channel 68, so as to adjust the pressure in the inner sealing cavity. When different strata are encountered, the pressures in the inner sealing cavity and the outer sealing cavity need to be adjusted synchronously. In this embodiment, the inner sealing ring 61 is made of a multi-element composite material with high durability, the first inner sealing ring 62 is made of a material with high durability, and the second inner sealing ring 64 is made of a composite material with high durability.

[0036] Specifically, the outer sealing system composed of the first outer sealing ring 51, the second outer sealing ring 52, the first outer sealing ring 53, the outer sealing locking mechanism 54, the second outer sealing ring 55 and the outer sealing connecting piece 56, and the inner sealing system composed of the inner sealing ring 61, the first inner sealing ring 62, the inner sealing locking mechanism 63, the second inner sealing ring 64, the inner sealing connecting piece 65, the inner sealing support assembly 66 and the inner sealing support ring 67 can realize rapid maintenance and replacement in the tunnel without dismounting the cutter disc flange assembly 4, the implementation difficulty is greatly reduced, and the construction efficiency is improved on the basis of ensuring the sealing effect.

[0037] Further, as shown in FIG. 6, the outer sealing system and the inner sealing system are connected to the cutter disc flange assembly 4 through the connecting flange 2, and the outer sealing system and the inner sealing system are connected to the cutter disc flange assembly 4 through the connecting flange 2. Figure 1As shown, the driving mechanism comprises a driving element 31, a torque conversion device 32, a speed reducer 33 and a transmission member 34. The driving element 31 is connected to the torque conversion device 32, the torque conversion device 32 is connected to the speed reducer 33, and the speed reducer 33 is connected to the main bearing 1 through the transmission member 34. In this embodiment, the driving element 31 is reversely connected to the torque conversion device 32 through a spline shaft, and the working condition adaptive torque generated by the high-power driving element 31 is indirectly input to the torque switching device. The torque conversion device 32 is connected to the speed reducer 33 through a spline shaft transmission. In this embodiment, the speed reducer 33 is a long-service-life high-power speed reducer, and the transmission member 34 is a high-efficiency high-precision transmission member.

[0038] Embodiment 2:

[0039] The embodiment of the present application provides a tunneling machine, which comprises the multi-mode tunneling machine main drive in the embodiment 1 and a tunneling machine main body, and the multi-mode tunneling machine main drive is connected to a cutter head assembly of the tunneling machine main body.

[0040] The working condition of the tunneling machine provided by the embodiment is that the driving element 31 drives the torque conversion device, the main bearing 1 is driven through the speed reducer 33 and the transmission member 34, the main bearing 1 drives the cutter head flange assembly 4 to rotate to excavate a tunnel to a target position through the connecting flange 2. In the tunneling process, according to different stratum conditions, the lubricating medium is transported into the outer sealing cavity and the inner sealing cavity through the first multi-medium lubricating pressure maintaining channel 57 and the second multi-medium lubricating pressure maintaining channel 68, and the pressure in the outer sealing cavity and the inner sealing cavity is adjusted.

[0041] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0042] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature is "over", "above" and "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature is "under", "below" and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0044] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A main drive for a multi-mode tunneling machine, characterized in that, Includes main bearing (1), connecting flange (2) and drive mechanism; The drive mechanism is connected to the main bearing (1), and the inner ring of the main bearing (1) can be connected to the cutterhead flange assembly (4) of the tunneling machine body through the connecting flange (2). An external sealing system and an internal sealing system are detachably installed on the connecting flange (2). The external sealing system forms an external sealing cavity with the cutterhead flange assembly (4), and the internal sealing system forms an internal sealing cavity with the cutterhead flange assembly (4). The external sealing system includes a first external sealing ring (51), a second external sealing ring (52), a first external sealing ring (53), an external sealing locking mechanism (54), a second external sealing ring (55), and an external sealing connector (56). The first outer sealing ring (51) is installed at the front end of the main bearing (1), the second outer sealing ring (52) is sleeved on the outside of the connecting flange (2), and a plurality of first outer sealing rings (53) are sleeved on the outside of the second outer sealing ring (52) along the axial direction of the main drive. The plurality of first outer sealing rings (53) are detachably connected to the first outer sealing ring (51) through the outer sealing locking mechanism (54). The first outer sealing rings (53) are connected to the outer sealing locking mechanism (54) through the isolation ring. The distance between two adjacent first outer sealing rings (53) can be flexibly adjusted by the outer sealing locking mechanism (54). The first outer sealing ring (51) is connected to the second outer sealing ring (55), and the second outer sealing ring (55) can be fixed to the rear side of the cutter head flange assembly (4) by the outer sealing connector (56); The internal sealing system includes an internal sealing ring (61), a first internal sealing ring (62), an internal sealing locking mechanism (63), a second internal sealing ring (64), an internal sealing connector (65), an internal sealing support assembly (66), and an internal sealing support ring (67). The inner sealing ring (61) is installed on the front side of the main bearing (1), and a plurality of first inner sealing rings (62) are sleeved on the outside of the inner sealing ring (61) along the axial direction of the main drive. The plurality of first inner sealing rings (62) are detachably connected to the connecting flange (2) through the inner sealing locking mechanism (63). The first inner sealing rings (62) are connected to the inner sealing locking mechanism (63) through the isolation ring. The distance between two adjacent first inner sealing rings (62) can be flexibly adjusted by the inner sealing locking mechanism (63). The inner sealing support ring (67) is connected to the bottom of the inner sealing ring (61), the inner sealing support assembly (66) is connected to the inner sealing support ring (67), and the second inner sealing ring (64) can be fixedly connected to the cutter head flange assembly (4) through the inner sealing connector (65). The second outer sealing ring (52) has a first multi-media lubrication and pressure-maintaining channel (57) inside, and the first multi-media lubrication and pressure-maintaining channel (57) is connected to the outer sealing cavity; The inner sealing ring (61) has a second multi-media lubrication and pressure-maintaining channel (68) inside, and the second multi-media lubrication and pressure-maintaining channel (68) is connected to the inner sealing cavity.

2. The main drive of the multi-mode tunneling machine as described in claim 1, characterized in that, The main bearing (1) is a multi-row roller bearing.

3. The main drive of the multi-mode tunneling machine as described in claim 1, characterized in that, The drive mechanism includes a drive element (31), a torque conversion device (32), a reducer (33), and a transmission component (34). The drive element (31) is connected to the torque conversion device (32), the torque conversion device (32) is connected to the reducer (33), and the reducer (33) is connected to the main bearing (1) through the transmission component (34).

4. The main drive of the multi-mode tunneling machine as described in claim 3, characterized in that, The drive element (31) is connected in reverse to the torque conversion device (32) via a splined shaft.

5. A tunneling machine, characterized in that, Includes the multi-mode tunneling machine main drive as described in any one of claims 1-4 and the tunneling machine body. The main drive of the multi-mode tunneling machine is connected to the cutterhead flange assembly (4) of the tunneling machine body.

Images