A shaft sinking machine

Abstract

The application relates to the technical field of shaft excavation equipment, in particular to a shaft tunneling machine. The shaft tunneling machine comprises a main machine shield body, a cutting arm device, a main beam, a profiling cutter head and a shaft tower; the main beam is movably arranged on the shaft tower, the main machine shield body is arranged at one end of the main beam, the cutting arm device is arranged on the main machine shield body, and the cutting arm device is used for initial excavation of a shaft side to form an initial shaft side; the profiling cutter head is arranged on the main beam and located above the cutting arm device; the profiling cutter head is telescopic on the main beam and rotates and expands the primary shaft side to process the primary shaft side into a secondary shaft side with an inverted conical side wall. The shaft tunneling machine processes the inverted conical secondary shaft side through the profiling cutter head; the inclined side wall of the inverted conical secondary shaft side provides effective support for installation of a shaft side support system, and solves the problems of poor fixing effect and easy falling off of the shaft side support system.

Description

Technical Field

[0001] This application relates to the field of shaft excavation equipment technology, and more particularly to a shaft tunneling machine. Background Technology

[0002] A shaft tunneling machine is a specialized engineering instrument used for shaft excavation, and it is applied to excavation work at various shaft excavation sites.

[0003] The main procedures for shaft construction include three major stages: excavation, support, and muck removal. As the initial stage, the excavation stage plays a decisive role in the subsequent support and muck removal. In the existing excavation stage, single-section cutting arm or double-section cutting arm structures are usually used for excavation. The excavation structure of single-section cutting arm or double-section cutting arm forms the vertical shaft wall.

[0004] However, the support system for vertical shaft walls not only uses a large number of traditional anchor bolts for fixation, but also sets up dense wall supports to prevent the support system from slipping off; however, due to the large self-weight of the support system, the existing fixing method has poor fixing effect and is prone to the problem of the support system falling off. Summary of the Invention

[0005] This invention provides a shaft boring machine to solve the problems of poor fixation and easy detachment of the shaft support system.

[0006] This application of the present invention provides a vertical shaft tunneling machine, comprising: a main shield body, a cutting arm device, a main beam, a contour cutterhead, and a derrick;

[0007] The main beam is movably mounted on the derrick, the main shield is mounted on one end of the main beam, and the cutting arm device is mounted on the main shield. The cutting arm device is used for the initial excavation of the well wall to form the initial well wall.

[0008] The contour cutter head includes a cutter head frame, at least one first telescopic device, at least one cutting tool, a first slewing bearing, and at least one first drive assembly. The first slewing bearing is disposed on the main beam and located above the cutting arm device. The cutter head frame is disposed on the first slewing bearing. The first drive assembly drives the cutter head frame to rotate. The first telescopic device is disposed on the cutter head frame, and the cutting tool is disposed on the first telescopic device.

[0009] The cutting tool is configured such that its cutting face is inclined, the first telescopic device extends to apply the cutting tool to the initial shaft wall, the cutter head frame rotates to drive the cutting tool to excavate the initial shaft wall, and an inverted conical sidewall adapted to the cutting tool is formed on the sidewall of the initial shaft wall to form a secondary shaft wall.

[0010] The shaft boring machine provided in this application comprises a main shield, a cutting arm device, a main beam, a contour cutterhead, and a derrick. The main beam is movably mounted on the derrick, the main shield is mounted at one end of the main beam, and the cutting arm device is mounted on the main shield. The cutting arm device is used for initial excavation of the shaft walls to form the initial shaft walls. The contour cutterhead includes a cutterhead frame, at least one first telescopic device, at least one cutting tool, a first slewing bearing, and at least one first drive assembly. The first slewing bearing is mounted on the main beam and located above the cutting arm device. The cutterhead frame is mounted on the first slewing bearing. The first drive assembly drives the cutterhead frame to rotate. The first telescopic device is mounted on the cutterhead frame, and the cutting tool is mounted on the first telescopic device. The cutting tool is configured such that its blade surface is inclined, and the first telescopic device extends... The cutting tool is applied to the initial shaft wall, and the cutterhead frame rotates to drive the cutting tool to excavate the initial shaft wall. An inverted conical sidewall adapted to the cutting tool is formed on the side wall of the initial shaft wall to form a secondary shaft wall. This application uses a cutting arm device to excavate to form a primary shaft wall, and then uses a contour cutterhead to excavate and form a secondary shaft wall. The key point is that the secondary shaft wall has an inclined sidewall to form an inverted conical shaft wall. The inverted conical shaft wall provides vertical support for the tunnel segments and better supports the weight of the tunnel segments. In addition, after all the tunnel segments are installed on the same inverted conical shaft wall, an annular tunnel segment body is formed between the tunnel segments, so the tunnel segments are connected and limited to prevent the tunnel segments from falling off, thereby completing the simplified installation and fixation of the tunnel segments. In summary, the inverted conical shaft wall enhances the installation and fixation effect of the tunnel segments and avoids the tunnel segments falling off. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0012] Figure 1 This is a schematic diagram of the structure of the shaft boring machine provided in the embodiments of this application;

[0013] Figure 2 for Figure 1 Enlarged schematic diagram of part B;

[0014] Figure 3 A cross-sectional view of the contour cutterhead provided in an embodiment of this application;

[0015] Figure 4 This is a top view of the segment installation device provided in an embodiment of this application;

[0016] Figure 5 for Figure 4 A sectional view of EE in the diagram;

[0017] Figure 6 for Figure 5 Enlarged diagram of part A in the diagram;

[0018] Figure 7This is a top view of the rear support boot device provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 100-Main Shield Body;

[0021] 200 - Cutting arm assembly; 210 - Cutting arm; 220 - Rotary drive system;

[0022] 300 - Main beam; 310 - Slag discharge pipe;

[0023] 400-Contouring cutter head; 410-Cutter head frame; 420-First telescopic device; 430-Cut tool; 431-Lower inclined surface; 432-Upper inclined surface; 440-First slewing bearing; 450-First drive assembly; 451-First drive motor; 452-First gear ring; 453-First bevel gear; 460-Second telescopic device; 470-First support device; 480-First parking mechanism; 481-First parking telescopic component; 482-First friction plate; 490-Multi-stage telescopic frame; 491-Anti-collision pad; 411-First roller;

[0024] 500-Derrick;

[0025] 600 - Front support device; 610 - Main unit support shoe;

[0026] 700-Segment installation device; 710-Telescopic lifting platform; 711-Fixed plate; 712-Modible plate; 720-Segment assembler; 721-Rotary frame; 722-Radial cylinder; 723-Suction cup; 724-Second slewing bearing; 725-Second drive assembly; 7251-Second drive motor; 7252-Second gear ring; 7253-Second bevel gear; 726-Second fine-tuning cylinder; 727-Fourth telescopic device; 728-Second support device; 729-First fine-tuning cylinder; 730-Telescopic frame; 740-Second roller; 750-Second parking mechanism; 751-Second parking telescopic component; 752-Second friction plate; 760-Segment holder; 761-First telescopic holder; 762-Second telescopic holder; 763-Support plate;

[0027] 800-segment;

[0028] 900 - Rear support shoe device; 910 - Support shoe frame; 920 - Support shoe cylinder; 930 - Support shoe body; 940 - Fifth telescopic device;

[0029] 110-Top loading device; 111-Top lifting platform; 112-Auxiliary crane; 113-Segment box; 120-Slag conveying device; 121-Slag transfer platform; 122-Winch; 123-Slag loading bucket; 130-Walking platform; 140-Slag guiding assembly; 141-Slag guiding plate; 142-Third telescopic device; 143-Extension plate; 144-Telescopic drive component; 150-Installation platform; 160-Electrical system; 170-Filling section; 180-Connecting plate.

[0030] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0032] As shown in the background section, in the existing technology, the excavation structure of single or double cutter arms produces a vertical shaft wall. Since the vertical shaft wall extends in the vertical direction and lacks horizontal support, the support system of the vertical shaft wall needs to use a large number of traditional anchor bolts for fixation. At the same time, it is also necessary to set up dense wall seats to prevent the segments from slipping, which greatly increases the complexity of the process and reduces the construction efficiency.

[0033] Based on this, this application provides a shaft boring machine, including a main shield, a cutting arm device, a main beam, a contour cutterhead, and a derrick; the main beam is movably mounted on the derrick, the main shield is mounted at one end of the main beam, the cutting arm device is mounted on the main shield, and the cutting arm device is used for initial excavation of the shaft side to form an initial shaft side; the contour cutterhead includes a cutterhead frame, at least one first telescopic device, at least one cutter, a first slewing bearing, and at least one first drive assembly, the first slewing bearing is mounted on the main beam and located above the cutting arm device, the cutterhead frame is mounted on the first slewing bearing, the first drive assembly drives the cutterhead frame to rotate, the first telescopic device is mounted on the cutterhead frame, and the cutter is mounted on the first telescopic device; the cutter is configured such that the cutter face is inclined, the first telescopic device extends to apply the cutter to the initial shaft side, the cutterhead frame rotates to drive the cutter to excavate the initial shaft side, and an inverted conical sidewall adapted to the cutter is formed on the sidewall of the initial shaft side to form a secondary shaft side; thereby solving the problem of installation difficulties caused by the complex installation process of the shaft side support system.

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] Figure 1 This is a schematic diagram of the structure of the shaft boring machine provided in the embodiments of this application; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 A cross-sectional view of the profile cutter head provided in an embodiment of this application.

[0036] See Figure 1 , Figure 2 and Figure 3 The present application provides a shaft tunneling machine, including a main shield body 100, a cutting arm device 200, a main beam 300, a contour cutterhead 400, and a derrick 500.

[0037] The main beam 300 is movably mounted on the derrick 500, the main shield 100 is mounted on one end of the main beam 300, and the cutting arm device 200 is mounted on the main shield 100. The cutting arm device 200 is used for the initial excavation of the shaft side to form the initial shaft side.

[0038] The contour cutter head 400 includes a cutter head frame 410, at least one first telescopic device 420, at least one cutter 430, a first slewing bearing 440, and at least one first drive assembly 450. The first slewing bearing 440 is disposed on the main beam 300 and located above the cutting arm device 200. The cutter head frame 410 is disposed on the first slewing bearing 440. The first drive assembly 450 drives the cutter head frame 410 to rotate. The first telescopic device 420 is disposed on the cutter head frame 410, and the cutter 430 is disposed on the first telescopic device 420.

[0039] The cutter 430 is configured such that the cutting face of the cutter 430 is inclined, the first telescopic device 420 extends to apply the cutter 430 to the initial shaft wall, the cutter head frame 410 rotates to drive the cutter 430 to excavate the initial shaft wall, and an inverted conical sidewall adapted to the cutter 430 is formed on the sidewall of the initial shaft wall to form a secondary shaft wall.

[0040] For example, one or more of the first telescopic device 420 and the cutter 430 may be provided, and this application does not limit the number of both.

[0041] It should be noted that the cutting arm device 200 digs vertically downwards from the ground surface. According to the prior art, the cutting arm device 200 includes a rotary drive system 220 and at least one cutting arm 210. The rotary drive system 220 is mounted on the main shield body 100, and the cutting arm 210 is mounted on the rotary drive system 220. The rotary drive system 220 drives the cutting arm 210 to rotate and dig. The above are technologies well known to those skilled in the art, and will not be described in detail here.

[0042] For example, one or more cutting arms 210 may be provided, and the number is not limited in this application; preferably, this embodiment takes two cutting arms 210 as an example. The two cutting arms 210 are arranged symmetrically around the center of the rotary drive system 220. The significance of this arrangement is: first, the more cutting arms 210 there are, the faster the digging speed, thereby improving work efficiency; second, the two cutting arms 210 form a force balance, effectively preventing the cutting arm device 200 from swinging.

[0043] Specifically, in the initial state, the entire cutting arm device 200 is located on the ground. When digging begins, the rotary drive system 220 drives the cutting arm 210 to rotate. At this time, the first telescopic device 420 of the contour cutter head 400 is in the retracted state, and the first drive component 450 is in the stopped state.

[0044] It should be noted that, according to existing technology, the main beam 300 is suspended on the derrick 500 by a hoisting cable. The hoisting cable is wound onto the take-up reel, which is rotated by the control of a motor to realize the take-up or unwinding of the line. This is existing technology and will not be elaborated here.

[0045] The first step is the excavation process:

[0046] The main beam 300 moves downwards, the cutting arm 210 contacts the ground and begins excavation. According to existing technology, the cutting arm 210 excavates and forms a vertical shaft wall, which is the primary shaft wall. The enlargement excavation of the contour cutterhead 400 can be carried out simultaneously according to the size of the working space height H (H is the initial shaft wall height). Generally, the safe height H is required to be H≥M+1m, where M is the maximum longitudinal height of the contour cutterhead 400. That is, if M is ten meters, then H is eleven meters.

[0047] For example, when the initial shaft wall reaches a depth of H, the cutting arm 210 can choose to stop digging downwards. At this time, the first telescopic device 420 extends radially, and the first drive assembly 450 drives the cutterhead frame 410 to rotate. When the cutter 430 abuts against the initial shaft wall, the cutter 430 expands the initial shaft wall until it reaches the set contour depth, forming a secondary shaft wall with an inverted cone structure. Then the cutterhead frame 410 stops rotating, and the first telescopic device 420 retracts to its initial state. Further, the cutting arm 210 restarts and digs downwards. When the digging depth is greater than or equal to H, the cutting arm 210 can choose to stop digging downwards again, and the first telescopic device 420 extends radially again to dig the secondary shaft wall. This process is repeated. It can be seen that through the expansion of the contour cutterhead 400, multiple layers of inverted cone-shaped secondary shaft walls are formed from top to bottom on the basis of the initial shaft wall.

[0048] As described above, following the top-down order, the second-level well wall is formed by the cutting arm 210 digging downwards to a depth greater than or equal to H after the first-level well wall has reached its depth. Therefore, the cutting arm 210 digs downwards to a depth of at least H. Preferably, in this embodiment, after the cutting head 400 completes the first-level well wall excavation, the cutting arm 210 digs downwards to a depth of H + 0.3m. This results in a distance of 0.3m between the bottom and top of two adjacent secondary well walls. This 0.3m distance effectively avoids damage to the lower end of the first-level well wall caused by the cutting head 400 during the second-level well wall excavation, thus ensuring the integrity of each level of well wall and facilitating the subsequent installation of the tunnel segments 800. For example, the cutting arm 210 can also dig downwards to a depth of H + 0.5m, H + 0.7m, etc., which can be selected according to actual needs and will not be elaborated further here.

[0049] For example, the first telescopic device 420 is a first telescopic hydraulic cylinder. Alternatively, the first telescopic device 420 may also be, but is not limited to, a linear motor. The first telescopic device 420 is not limited here. The first slewing bearing 440 is a bearing. Meanwhile, the cutter 430 is for rotary cutting, so its cutting surface is arc-shaped. Preferably, one end of the first telescopic device 420 is hinged to the cutter 430.

[0050] In some embodiments, there are two cutting tools 430, which are symmetrically arranged around the center of the cutter head frame 410. At least two first telescopic devices 420 are connected to each cutting tool 430. There may be multiple first slewing bearings 440, preferably two, which provide slewing support for the upper and lower ends of the cutter head frame 410 respectively.

[0051] For example, the first telescopic device 420 connected to the same cutting tool 430 can be two or more, without limitation here; taking two first telescopic devices 420 as an example, the two first telescopic devices 420 are connected to the cutting tool 430 from top to bottom, and the two first telescopic devices 420 simultaneously control the extension and retraction of one cutting tool 430, effectively ensuring the stability of the movement of the cutting tool 430; in addition, two cutting tools 430 are symmetrically arranged on a cutter head frame 410, and the two cutting tools 430 dig simultaneously, forming a force balance on the cutter head frame 410, ensuring the stability of the rotation of the cutter head frame 410.

[0052] In some embodiments, the cutting surface of the cutter 430 includes at least a lower inclined surface 431, the cutting surface of the lower inclined surface 431 being inclined downwards towards the middle of the cutter head frame 410, and / or the cutting surface of the cutter 430 also includes an upper inclined surface 432, the upper inclined surface 432 being located at the top of the lower inclined surface 431, and the top of the upper inclined surface 432 being inclined inwards towards the middle of the cutter head frame 410. In this embodiment, it can be understood that a V-shaped structure is formed between the lower inclined surface 431 and the upper inclined surface 432, and the included angle between the two is greater than 90° but less than 180°; specifically, the length of the upper inclined surface 432 is less than the length of the lower inclined surface 431, the former being approximately one-quarter of the latter; it can be known that the cutter 430 has a V-shaped structure, therefore the secondary shaft wall it excavates also has a V-shaped structure.

[0053] For example, the aforementioned cutting tool 430 uses a rock-breaking tool, which can be of various types such as cutting teeth and hobs. This is prior art and does not limit the cutting tool 430.

[0054] Thus, the upper slope 432 can act as a shielding surface to cover the top of the lower slope 431, preventing the waste generated during excavation from falling into the interior of the cutter 430; at the same time, the upper slope 432 forms a flat top surface of the secondary shaft wall after excavation, preventing the top soil from falling off.

[0055] Specifically, as can be seen from the above, the distance between the bottom and top of two adjacent secondary well sides is 0.3m. Since the cutter 430 is V-shaped in this embodiment, the secondary well sides are also V-shaped. Between two adjacent secondary well sides, the distance from the V-shaped bend point of the next level well side to the bottom of the previous level well side must be N, where N≥0.5m.

[0056] In some embodiments, the contour cutter head 400 further includes a first support device 470 and at least two second telescopic devices 460.

[0057] The first support device 470 is movably mounted on the main beam 300. The cutter head frame 410, the first slewing bearing 440, and the first drive assembly 450 are all mounted on the first support device 470. One end of the second telescopic device 460 is connected to the first support device 470, and the other end is connected to the cutting arm device 200.

[0058] The second telescopic device 460 extends and retracts to drive the first support device 470 to move axially along the main beam 300.

[0059] For example, the number of second telescopic devices 460 can be two or more, and there is no limitation here; the second telescopic device 460 can be a second telescopic hydraulic cylinder, or alternatively, the second telescopic device 460 can also be a linear motor; preferably, each end of the second telescopic device 460 is hinged to the first support device 470 and the cutting arm device 200.

[0060] For example, the first support device 470 is provided with an inner hole, and at least two axial grooves are provided on the wall of the inner hole. The main beam 300 is provided with a convex rail corresponding to the groove. The inner hole is sleeved on the main beam 300, and the convex rail is adapted to the groove. The groove of the first support device 470 slides along the convex rail, thereby enhancing the stability of the first support device 470's movement.

[0061] It should be noted that the second telescopic device 460 drives the first support device 470 to move axially in the main beam 300. Its function is twofold: First, as mentioned above, when the profile cutterhead 400 is excavating the secondary shaft wall, the cutting arm device 200 cannot move downwards, thus reducing the shaft's excavation efficiency. The function of the second telescopic device 460 is that when the profile cutterhead 400 is excavating the secondary shaft wall, the main beam 300 can follow the cutting arm device 200 downwards. The second telescopic device 460 can continuously extend and retract as the main beam 300 moves forward, ensuring that the profile cutterhead 400 maintains a constant height position for widening excavation. This allows for simultaneous excavation of the primary and secondary shaft walls, greatly improving excavation efficiency. Second, as mentioned above, there are distance requirements between adjacent secondary shaft walls. Therefore, the second telescopic device 460 can be used to fine-tune the height position of the profile cutterhead 400, thereby achieving precise positioning of the secondary shaft wall excavation location.

[0062] In some embodiments, the first drive assembly 450 includes a first drive motor 451, a first gear ring 452, and at least one first bevel gear 453.

[0063] The first drive motor 451 is mounted on the first support device 470, the first bevel gear 453 is connected to the output shaft of the first drive motor 451, and the first gear ring 452 is mounted on the cutter head frame 410. The first bevel gear 453 meshes with the first gear ring 452.

[0064] The first drive motor 451 drives the cutter head frame 410 to rotate through the meshing transmission of the first bevel gear 453 and the first gear ring 452.

[0065] For example, the number of first bevel gears 453 can be one or more, and there is no limitation here.

[0066] Preferably, taking a first bevel gear 453 as an example, this first bevel gear 453 is directly mounted on the output shaft of the first drive motor 451. It should be noted that the first gear ring 452 directly meshes with the first bevel gear 453 on the output shaft. In this way, the bevel gear has the characteristics of high transmission efficiency, strong load-bearing capacity, low noise, stable operation and compact structure, thereby improving the reliability of the tunneling machine.

[0067] In addition, taking two first bevel gears 453 as an example, one first bevel gear 453 is set on the output shaft of the first drive motor 451, and the other first bevel gear 453 is rotatably set on the first support device 470. The other first bevel gear 453 meshes with the first gear ring 452. In this way, the transmission of multi-stage bevel gears can increase the torque output.

[0068] Alternatively, a reducer can be installed on the first drive motor 451. The reducer is used to control the output speed of the first drive motor 451, which facilitates the control of the speed of the cutter head frame 410. This is existing technology and will not be described in detail here.

[0069] In some embodiments, a first opening mounting position is provided on the outer side wall of the first support device 470, and the first slewing bearing 440 is disposed in the first opening mounting position.

[0070] The profile cutter head 400 also includes a plurality of first rollers 411, which are disposed between the top of the cutter head frame 410 and the top of the first opening mounting position.

[0071] And / or, a first roller 411 is provided between the bottom of the cutter head frame 410 and the bottom of the first opening mounting position.

[0072] It should be noted that the first opening mounting position is a U-shaped opening, which is set on the outer wall of the first support device 470. The cutter head frame 410 is set in the first opening mounting position. It should be noted that the first support device 470 includes a first L-shaped base and a first top plate. The first top plate covers the top of the first L-shaped base to form the first opening mounting position between the two. Therefore, the cutter head frame 410 is first installed on the first L-shaped base, and then the first top plate is covered to complete the installation of the cutter head frame 410 and the first support device 470. The first top plate can be detachably connected to the first L-shaped base by bolts or other means. Preferably, the first drive assembly 450 is set on the first top plate. Secondly, the top surface and / or ground surface of the cutter head frame 410 are provided with a roller groove, and the first roller 411 is set in the roller groove. In this way, when the cutter head frame 410 moves up and down along the main beam 300 axially with the first support device 470, the first roller 411 can play the purpose of buffering and preventing crushing.

[0073] In addition, to prevent the cutter head frame 410 from detaching from the opening of the first opening mounting position, limiting blocks are provided facing each other on the bottom plate of the first L-shaped base and the bottom of the first top plate. Correspondingly, limiting protrusions are provided at the top and bottom of the cutter head frame 410, and the limiting blocks limit the limiting protrusions in a horizontal direction, thereby effectively preventing the cutter head frame 410 from detaching from the opening of the first opening mounting position. More preferably, the limiting block on the bottom plate of the first L-shaped base can also be provided with a first roller 411. The bottom surface of the cutter head frame 410 can abut against the first roller 411 of this limiting block to prevent the cutter head frame 410 from jamming with this limiting block. The setting of the first roller 411 of this limiting block can refer to the method of the cutter head frame 410, which will not be repeated here.

[0074] In some implementations, the profile cutter head 400 also includes a first parking mechanism 480, which includes a first parking telescopic member 481 and a first friction plate 482 disposed on the first parking telescopic member 481.

[0075] The first parking telescopic member 481 is disposed on the first support device 470, and the first friction plate 482 is disposed on the first parking telescopic member 481.

[0076] The first stopping telescopic member 481 extends to drive the first friction plate 482 to move toward the cutter head frame 410. The first friction plate 482 contacts the cutter head frame 410 to generate frictional resistance, thereby stopping the cutter head frame 410.

[0077] For example, the first parking telescopic member 481 is a first parking telescopic cylinder; alternatively, the first parking telescopic member 481 can be a linear motor.

[0078] It should be noted that, preferably, the first stopping telescopic component 481 is disposed on the top plate of the first support device 470. Its working principle is as follows: Under normal conditions, the first stopping telescopic component 481 is in a retracted state, at which time the first friction plate 482 is not in contact with the cutterhead frame 410. When it is necessary to stop the rotating cutterhead frame 410, the first stopping telescopic component 481 extends to drive the first friction plate 482 towards the cutterhead frame 410. Ultimately, the first friction plate 482 acts on the cutterhead frame 410, achieving a reduction in speed through frictional resistance, and finally stopping the cutterhead frame 410. In summary, the first stopping telescopic component 481 effectively and promptly controls the stop of the cutterhead frame 410, improving the overall control effect and accelerating the tunneling speed.

[0079] In some embodiments, the contour cutter head 400 further includes at least one multi-stage telescopic frame 490, which is disposed on the cutter head frame 410 and one end of which is connected to the cutter 430. The multi-stage telescopic frame 490 extends and retracts synchronously with the first telescopic device 420.

[0080] For example, the number of multi-stage telescopic frames 490 is the same as the number of cutters 430.

[0081] It should be noted that the multi-stage telescopic frame 490 is existing technology and will not be described in detail here. In this embodiment, the middle of the side wall of the cutter head frame 410 is provided with an installation groove. One end of the multi-stage telescopic frame 490 is installed in the installation groove, and the other end is connected to the cutter 430. At this time, the multi-stage telescopic frame 490 is located between the two first telescopic devices 420 arranged above and below. The multi-stage telescopic frame 490 extends and retracts with the first telescopic device 420 to support the cutter 430 and ensure the stability of the cutter 430 during digging.

[0082] In addition, anti-collision pads 491 are provided between each level of the telescopic rods of the multi-level telescopic frame 490. The purpose of this setting is that when each level of telescopic rod is retracted, the anti-collision pads 491 play a buffering role between adjacent telescopic rods, preventing the tool 430 from becoming loose due to collisions during the telescopic movement of the multi-level telescopic frame 490.

[0083] In some embodiments, the tunneling machine further includes a front support device 600, which includes at least two main support shoes 610.

[0084] The main support shoe 610 is telescopically mounted on the main shield body 100. The main support shoe 610 is configured to support the initial shaft wall to provide support and fixation for the excavation of the cutting arm device 200.

[0085] It should be noted that the rotary drive system 220 is mounted on the main shield body 100. When the cutting arm device 200 is excavating the primary shaft wall, friction or vibration may affect the main beam 300. Therefore, when the cutting arm device 200 enters the primary shaft wall, the main support shoe 610 extends radially and abuts against the primary shaft wall during excavation. Specifically, the main support shoe 610 can be a telescopic rod controlled by a hydraulic cylinder, etc., which is not limited here. Furthermore, one end of the telescopic rod is provided with an abutment plate for abutting against the primary shaft wall. The abutment plate increases the abutment area against the primary shaft wall and enhances the abutment reliability. Conversely, when the cutting arm device 200 needs to advance downward, the main support shoe 610 can retract to release its abutment against the primary shaft wall.

[0086] For example, there may be two or more main support boots 610, which is not limited here, but preferably, the number is even and they are arranged in pairs symmetrical about the center of the main shield 100, so as to form a support balance.

[0087] Figure 4 This is a top view of the segment installation device provided in an embodiment of this application; Figure 5 for Figure 4 A sectional view of EE in the diagram; Figure 6 for Figure 5 Enlarged diagram of part A in the diagram;

[0088] In some embodiments, see Figure 4 , 5 The tunneling machine also includes a segment installation device 700, which includes a telescopic hoist 710, a segment assembler 720, and multiple segment fixers 760.

[0089] The telescopic lifting platform 710 is installed on the main beam 300. The telescopic lifting platform 710 extends and retracts radially along the main beam 300. The telescopic lifting platform 710 is located above the profile cutterhead 400. The segment holder 760 is installed on the telescopic lifting platform 710.

[0090] The segment assembler 720 includes a rotary frame 721, at least two radial cylinders 722, a suction cup 723, a second slewing bearing 724, and a second drive assembly 725. The second slewing bearing 724 is mounted on the main beam 300, the rotary frame 721 is mounted on the second slewing bearing 724, and the rotary frame 721 is located above the telescopic lifting platform 710. The radial cylinders 722 are mounted on the rotary frame 721, the telescopic lifting platform 710 is located above the telescopic lifting platform 710, the suction cup 723 is mounted on the radial cylinders 722, and the second drive assembly 725 acts on the rotary frame 721 to drive the rotary frame 721 to rotate.

[0091] The telescopic lifting platform 710 extends to transport the segment 800 to the secondary wellbore to a designated position. The radial cylinder 722 drives the suction cup 723 to pick up the segment 800 and install it onto the secondary wellbore. The segment retainer 760 acts on the segment 800 on the secondary wellbore to temporarily fix the segment 800.

[0092] For example, the number of radial cylinders 722 may be two or more, and there is no limitation here; preferably, one end of the radial cylinder 722 is hinged to the suction cup 723.

[0093] It should be noted that the telescopic hoist 710 includes a fixed plate 711 and a movable plate 712. The fixed plate 711 is mounted on the main beam 300 and a track chain is mounted on the fixed plate 711. The movable plate 712 is mounted on the track chain, and the radial (horizontal) extension and retraction of the movable plate 712 is driven by the track chain. This is prior art and will not be described in detail here. The segment holder 760 is mounted on the fixed plate 711. In addition, the telescopic hoist 710 is arranged along the circumference of the main beam 300.

[0094] For example, the second slewing bearing 724 is a bearing; in addition, the second drive assembly 725 in this embodiment can be disposed on the main beam 300.

[0095] The following steps are the installation steps for segment 800:

[0096] It can be seen that, initially, both the radial cylinder 722 and the movable plate 712 are in a retracted state. When the segment assembler 720 is horizontally aligned with the secondary shaft wall, the cutting arm device 200 stops tunneling. After the segment 800 is placed onto the movable plate 712 of the telescopic lifting platform 710, the movable plate 712 extends radially outward to move the segment 800 closer to the secondary shaft wall. Once the segment 800 reaches the designated position, the movable plate 712 stops radial movement, and then the radial cylinder 722 extends radially... Finally, the suction cup 723 picks up the segment 800 on the movable plate 712 and continues to move it towards the secondary wellbore. The segment 800 is pressed and installed onto the secondary wellbore. Then, the radial cylinder 722 retracts, the movable plate 712 of the telescopic lifting platform 710 retracts, and the second drive assembly 725 drives the rotary frame 721 to rotate by a specified angle, and it stands ready at the installation position of the next segment 800. In particular, at this time, it is necessary to first support the segment 800 that has been installed on the secondary wellbore. Thus, the setup is complete. The segment retainer 760 at the corresponding position of the telescopic lifting platform 710 acts on the segment 800 already installed on the secondary shaft wall to press the segment 800 onto the secondary shaft wall, thus temporarily fixing the segment 800. The above steps complete the installation of one segment 800. This installation is repeated until all segments 800 are assembled on the same secondary shaft wall. That is, after multiple segments 800 are assembled onto the same secondary shaft wall, a ring-shaped whole (ring segment body) is formed, and each segment... The segments 800 are interconnected; thus, it can be seen that the inclined sidewall of the secondary wellbore provides vertical support for the segments 800, and the segments 800 generate circumferential compressive force with each other, which effectively prevents the segments 800 on the secondary wellbore from slipping off; then, after the last segment 800 is installed on a secondary wellbore, the segment retainer 760 on the previous segment 800 can be retracted, and finally the telescopic lifting plate 710 and the radial cylinder 722 are retracted.

[0097] Specifically, the segments 800 can be prefabricated. In addition, the outer wall of the segments 800 is sloping and is adapted to the side wall of the secondary shaft. Furthermore, as can be seen from the above, multiple segments 800 need to be installed on the same secondary shaft. Therefore, the number of telescopic lifting platforms 710 should be consistent with the number of segments 800 that need to be installed on the same secondary shaft. Each telescopic lifting platform 710 is equipped with a segment fixing device 760.

[0098] Additionally, the bottom and top ends of the annular segments 800 between two adjacent layers are connected by a filling section 170; at the same time, two adjacent segments 800 that are aligned vertically are further fixed by a connecting plate 180, preferably, the connecting plate 180 is connected to the segments 800 by screws.

[0099] In some embodiments, the segment fixer 760 includes a first telescopic fixer 761 and a second telescopic fixer 762. One end of the first telescopic fixer 761 is hinged to the telescopic hanging plate 710, and the other end is a free end. One end of the second telescopic fixer 762 is hinged to the telescopic hanging plate 710, and the other end is hinged to the first telescopic fixer 761.

[0100] The second telescopic retainer 762 extends to lift the free end of the first telescopic retainer 761, and the free end of the first telescopic retainer 761 extends and abuts against the pipe segment 800 on the secondary well wall to temporarily fix the pipe segment 800.

[0101] For example, the first telescopic retainer 761 and the second telescopic retainer 762 may be telescopic hydraulic cylinders.

[0102] It should be noted that when no segment 800 is placed on the telescopic hoist 710, the first telescopic fixing device 761 and the second telescopic fixing device 762 are in their initial state, both in a retracted state. The first telescopic fixing device 761 is tightly attached to the fixing plate 711. After the segment 800 is installed at the corresponding position on the secondary well wall, the second telescopic fixing device 762 extends to raise the first telescopic fixing device 761 to a specified angle. Then, the free end of the first telescopic fixing device 761 extends and abuts against the segment 800 to temporarily fix the segment 800. In this way, the first telescopic fixing device 761 forms an oblique support for the segment 800, similar to the principle of triangular support, which improves the stability and reliability of the temporary fixation of the segment 800.

[0103] In some embodiments, the segment fixer 760 further includes a support plate 763, which is disposed at the free end of the first telescopic fixer 761. After the first telescopic fixer 761 extends, the support plate 763 is used to abut against the segment 800. The support plate 763 increases the contact area with the segment 800, which is beneficial to improving the stability of the support.

[0104] In some embodiments, the segment assembler 720 further includes a second support device 728 and at least two fourth telescopic devices 727.

[0105] The second support device 728 is movably mounted on the main beam 300. The slewing frame 721, the second slewing bearing 724, and the second drive assembly 725 are mounted on the second support device 728. The first drive assembly 450 is mounted on the second support device 728.

[0106] The fourth telescopic device 727 is connected at one end to the second support device 728 and at the other end to the main beam 300. The fourth telescopic device 727 extends and retracts to drive the second support device 728 to move axially along the main beam 300.

[0107] For example, the fourth telescopic device 727 is a fourth telescopic hydraulic cylinder.

[0108] It should be noted that the fourth telescopic device 727 drives the second support device 728 to move axially in the main beam 300. Its function is twofold: First, as mentioned above, when the segment installation device 700 is circumferentially installing the segment 800, the cutting arm device 200 cannot move downwards, which would reduce the excavation efficiency of the shaft. However, in this embodiment, the fourth telescopic device 727 can continuously extend and retract as the main beam 300 moves forward, allowing the main beam 300 to move downwards simultaneously while the segment installation device 700 is circumferentially installing the segment 800. Therefore, the fourth telescopic device 727 keeps the rotary frame 721 at a constant height; that is, it achieves the connection between the primary and secondary shaft sides of the tunneling machine. Simultaneous excavation and segment 800 ring installation can be carried out, greatly improving the efficiency of excavation and segment 800 installation. In addition, as mentioned above, the fourth telescopic device 727 can be used to change the height position of the rotary frame 721. After the suction cup 723 picks up the telescopic lifting plate 710, the fourth telescopic device 727 can pull the rotary frame 721 upward so that the segment 800 is separated from the telescopic lifting plate 710. Then, the radial cylinder 722 pushes the segment 800 towards the secondary shaft wall to avoid friction between the segment 800 and the telescopic lifting plate 710. Furthermore, the fourth telescopic device 727 can make fine adjustments to the axial extension of the main beam 300 to ensure the alignment of the segment 800 with the corresponding secondary shaft wall.

[0109] In some embodiments, the second drive assembly 725 includes a second drive motor 7251, a second gear ring 7252, and at least one second bevel gear 7253.

[0110] The second drive motor 7251 is mounted on the second support device 728, the second bevel gear 7253 is connected to the output shaft of the second drive motor 7251, and the second gear ring 7252 is mounted on the rotary frame 721. The second bevel gear 7253 meshes with the second gear ring 7252.

[0111] The second drive motor 7251 drives the cutter head frame 410 to rotate through the meshing transmission of the second bevel gear 7253 and the second gear ring 7252.

[0112] For example, the number of second bevel gears 7253 can be one or more, and there is no limitation here.

[0113] Preferably, taking a second bevel gear 7253 as an example, this second bevel gear 7253 is directly mounted on the output shaft of the second drive motor 7251. It should be noted that the second gear ring 7252 directly meshes with the second bevel gear 7253 on the output shaft. In this way, the bevel gear has the characteristics of high transmission efficiency, strong load-bearing capacity, low noise, stable operation and compact structure, which improves the reliability of the tunneling machine.

[0114] In addition, taking two second bevel gears 7253 as an example, one second bevel gear 7253 is mounted on the output shaft of the second drive motor 7251, and the other second bevel gear 7253 is rotatably mounted on the second support device 728. The other second bevel gear 7253 meshes with the second gear ring 7252. In this way, the transmission of multi-stage bevel gears can increase the torque output.

[0115] Alternatively, a reducer can be installed on the first drive motor 451. The reducer is used to control the output speed of the first drive motor 451, which facilitates the control of the speed of the cutter head frame 410. This is existing technology and will not be described in detail here.

[0116] In some embodiments, a second opening mounting position is provided on the outer wall of the second support device 728, and the second slewing bearing 724 is disposed in the opening mounting position.

[0117] The segment mounting device 700 also includes a plurality of second rollers 740, which are disposed between the top of the rotary frame 721 and the top of the second opening mounting position.

[0118] And / or, a second roller 740 is provided between the bottom of the rotary frame 721 and the bottom of the second opening mounting position.

[0119] It is understandable that the second opening mounting position of the second support device 728 has the same structure as the second opening installation position, which can be briefly described as follows: the second opening installation position is a U-shaped opening, which is set on the outer wall of the second support device 728, and the cutter head frame 410 is set in the second opening installation position. It should be noted that the second support device 728 includes a second L-shaped base and a second top plate. The second top plate covers the top of the second L-shaped base to form the second opening installation position between the two. Therefore, the rotary frame 721 is first installed on the second L-shaped base, and then... The second top plate is closed to complete the installation of the rotary frame 721 and the second support device 728. The second top plate can be detachably connected to the second L-shaped base by bolts or other means. Preferably, the second drive assembly 725 is disposed on the second top plate. Furthermore, the top surface and / or ground surface of the rotary frame 721 are provided with roller grooves, and the second roller 740 is disposed in the roller grooves. Thus, when the rotary frame 721 moves up and down along the main beam 300 axially with the second support device 728, the second roller 740 can serve to buffer and prevent crushing.

[0120] In addition, to prevent the rotary frame 721 from detaching from the opening of the second mounting position, limiting blocks are provided on the bottom plate of the second L-shaped base and the bottom of the second top plate facing each other. Correspondingly, limiting protrusions are provided on the top surface and the ground surface of the rotary frame 721, and the limiting blocks limit the limiting protrusions in the horizontal direction, thereby effectively preventing the rotary frame 721 from detaching from the opening of the mounting position. More preferably, the limiting block on the bottom plate of the second L-shaped base can also be provided with a second roller 740. The bottom surface of the rotary frame 721 can abut against the second roller 740 of this limiting block to prevent the rotary frame 721 from jamming against this limiting block. The setting of the second roller 740 of this limiting block can refer to the method of the cutter head frame 410, which will not be described in detail here.

[0121] In some embodiments, the segment installation device 700 further includes a second parking mechanism 750, which includes a second parking telescopic member 751 and a second friction plate 752 disposed on the second parking telescopic member 751.

[0122] The second parking telescopic member 751 is disposed on the second support device 728, and the second friction plate 752 is disposed on the second parking telescopic member 751.

[0123] The second friction plate 752 is configured such that the second parking telescopic member 751 extends to drive the second friction plate 752 to move toward the rotary frame 721, and the second friction plate 752 contacts the rotary frame 721 to generate frictional resistance, thereby stopping the rotary frame 721.

[0124] For example, the second parking telescopic member 751 is a second parking telescopic cylinder; alternatively, the second parking telescopic member 751 can be a linear motor.

[0125] It should be noted that, preferably, the second stopping telescopic member 751 is installed on the top plate of the second support device 728. Its working principle is as follows: Under normal conditions, the second stopping telescopic member 751 is in a retracted state. At this time, the first friction plate 482 is not in contact with the rotary frame 721. When it is necessary to stop the rotating rotary frame 721, the second stopping telescopic member 751 extends so that the second friction plate 752 moves towards the rotary frame 721 and finally acts on the rotary frame 721. The second friction plate 752 slows down through frictional resistance and eventually stops rotating. In summary, the second stopping telescopic member 751 effectively and timely controls the second friction plate 752 to stop rotating, improves the overall control effect, and accelerates the tunneling speed.

[0126] In some embodiments, the segment assembler 720 further includes a telescopic frame 730 and two first fine-tuning cylinders 729. One end of the telescopic frame 730 is connected to the rotary frame 721, and the other end is connected to the suction cup 723. The telescopic frame 730 is used to extend and retract with the radial cylinder 722 to support the suction cup 723.

[0127] At the same horizontal height as the telescopic frame 730, two first fine-tuning cylinders 729 are each set on one side of the telescopic frame 730. One end of the first fine-tuning cylinder 729 is connected to the telescopic frame 730, and the other end is connected to the suction cup 723.

[0128] And / or, the segment assembler 720 also includes a second fine-tuning cylinder 726, which is located below the telescopic frame 730. One end of the second fine-tuning cylinder 726 is connected to the telescopic frame 730, and the other end is connected to the suction cup 723.

[0129] For example, the telescopic frame can be a telescopic cylinder or a linear motor of the prior art, which is not limited here and will not be described in detail; preferably, one end of the first fine-tuning cylinder 729 is hinged to the telescopic frame 730 and the other end is hinged to the suction cup 723; similarly, one end of the second fine-tuning cylinder 726 is hinged to the telescopic frame 730 and the other end is hinged to the suction cup 723.

[0130] It should be noted that the telescopic frame 730 is positioned between the supports of the two radial cylinders 722. Preferably, one end of the telescopic frame 730 is hinged to the center of the suction cup 723. The telescopic frame 730 extends and retracts with the radial cylinders 722, providing auxiliary support for the radial cylinders 722. The other two first fine-tuning cylinders 729 can control the horizontal swing of the suction cup through extension and retraction, thereby making small adjustments to the horizontal angle of the suction cup to ensure that the installation position of the segment 800 is accurate enough. Similarly, the second fine-tuning cylinder 726 makes small adjustments to the vertical angle of the suction cup to ensure that the installation position of the segment 800 is accurate enough.

[0131] Figure 7 This is a top view of the rear support boot assembly.

[0132] See Figure 7 In some embodiments, the tunneling machine further includes a rear support shoe device 900, which includes a support shoe frame 910, at least one support shoe cylinder 920, at least one support shoe body 930, and at least two fifth telescopic devices 940. The support shoe frame 910 is movably mounted on the main beam 300 and is located above the slewing frame 721. One end of the support shoe cylinder 920 is connected to the support shoe frame 910, and the support shoe body 930 is connected to the other end of the support shoe cylinder 920. One end of the fifth telescopic device 940 is connected to the support shoe frame 910, and the other end is connected to the main beam 300.

[0133] The fifth telescopic device 940 extends and retracts to drive the support frame 910 to move axially along the main beam 300.

[0134] After the secondary wellbore completes the ring assembly of the segment 800, the support shoe cylinder 920 extends to drive the support shoe body 930 to abut against at least a portion of the segment 800 supported on the secondary wellbore.

[0135] For example, the number of support shoe cylinders 920 and support shoe bodies 930 can be one or more, and there is no limitation here; the support shoe body 930 is preferably a hard rubber support block, and the curvature of the support surface of the support block is adapted to the inner sidewall of the tube segment.

[0136] It should be noted that after the above-mentioned segment 800 is installed, the cutting arm device 200 will continue to excavate downwards. Since the segment holder 760 has retracted at this time, the segment 800 that has been installed on the secondary shaft wall will not have external support. In particular, the segment 800 close to the segment installation device 700, which is the lowest segment, is more susceptible to the impact of vibration and other factors from the excavation work below.

[0137] The following steps constitute the support steps for segment 800:

[0138] When the segment assembler 720 moves downward and reaches the secondary shaft wall of the segment 800 to be installed at the highest position, the rear support shoe device 900 is at the same height as the center of the bottom ring segment 800.

[0139] It should be noted that, since the rear support shoe device 900 supports the segment 800 while the cutting arm device 200 is continuously digging downwards, in this embodiment the support shoe frame 910 is connected to the fifth telescopic device 940. The fifth telescopic device 940 can dynamically extend and retract according to the movement of the main beam 300 to ensure that the rear support shoe device 900 maintains a constant horizontal position and height, and to ensure that the rear support shoe device 900 supports the lowest ring segment 800.

[0140] Of course, after the segment installation device 700 assembles the latest level of annular segment 800 of the well wall, the support shoe cylinder 920 of the rear support shoe device 900 retracts to its initial state. Then, the rear support shoe device 900 moves downward with the main beam 300 and reaches the same height position as the latest level of annular segment 800. Then, the support shoe cylinder 920 extends to abut the support shoe body 930 against the annular segment 800 at the corresponding position.

[0141] In addition, it is known that the rear support shoe device 900 not only supports the segment 800, but also provides a reverse torsional force to the main beam 300, which effectively promotes the downward excavation of the main beam 300.

[0142] In some embodiments, the rear support shoe device 900 further includes a viewing platform, which is disposed on the main beam 300 and located above the rear support shoe device 900. More preferably, the viewing platform is movable on the main beam. Preferably, the viewing platform is slidably disposed on the main beam 300. The viewing platform is connected to one end of a telescopic cylinder, and the other end of the telescopic cylinder is connected to the main beam 300. The height position of the viewing platform is controlled by the extension and retraction of the telescopic cylinder. The function of the viewing platform is that the operator stands on the viewing platform to confirm whether the support shoe body 930 of the rear support shoe device 900 is aligned with the segment 800 that needs to be supported.

[0143] In some embodiments, a flexible plate is provided on the surface of the support shoe 930 that abuts against the tube segment 800, and the flexible plate supports the tube segment 800 to prevent the support shoe 930 from crushing the tube segment 800.

[0144] In some embodiments, the tunneling machine further includes a top loading device 110, which includes a top hoist 111, an auxiliary hoist 112, and a segment box 113.

[0145] The top hanging platform 111 is erected on the top of the main beam 300, and the auxiliary crane 112 is set on the top hanging platform 111. After the segment 800 is installed into the segment box 113, the segment box 113 containing the segment 800 is lifted onto the telescopic hanging platform 710 by the auxiliary crane 112.

[0146] For example, the top hanging plate 111 is mounted on the top of the main beam 300 via a steel frame.

[0147] It should be noted that the top hoisting platform 111 can store the segments 800 to be used. After the segments 800 are loaded into the segment box 113, the auxiliary crane 112 lowers the segment box 113 onto the telescopic hoisting platform 710 for disassembly, and then it can be used for installation on the secondary shaft wall. In this way, the top loading device 110 is used to provide the required segments 800 to the lower segment installation device 700, thereby improving the conveying efficiency of the segments 800.

[0148] In some embodiments, the tunneling machine also includes a traveling platform 130, which is movably mounted on the main beam 300. After the segment box 113 containing the segment 800 is hoisted to the telescopic platform 710, the traveling platform 130 transports the operator to the telescopic platform 710, where the operator removes the segment box 113.

[0149] For example, the walking platform 130 can be telescopically moved on the main beam 300 by means of hydraulic cylinders.

[0150] It should be noted that the traveling platform 130 has a standing position. After the segment 800 is transported to the telescopic hoist 710, since the segment 800 is currently installed in the segment box 113, after the traveling platform 130 descends and reaches the telescopic hoist 710, the operator can climb onto the telescopic hoist 710 and remove the segment box 113. At this time, the auxiliary crane 112 will lift the empty segment box 113 back to the top hoist 111, and the operator will return to the traveling platform 130. The traveling platform 130 will then rise and move away from the telescopic hoist 710. After that, the segment installation device 700 will install the segment 800 onto the corresponding secondary shaft wall. This installation step has been described in detail above and will not be repeated here.

[0151] In some embodiments, a slag discharge pipe 310 is provided in the middle of the main beam 300, one end of which is connected to the cutting arm device 200, and the other end is provided to the top of the main beam 300.

[0152] It should be noted that each cutting arm 210 is equipped with an independent slag discharge channel, preferably using a vacuum pipe for slag discharge, which has the advantages of strong suction and fast slag discharge.

[0153] In some embodiments, the tunneling machine further includes a muck-carrying device 120, which includes a muck-transfer platform 121, a winch 122, and a muck-loading bucket 123. The muck-transfer platform 121 is located on the top of the main beam 300, and the winch 122 is located on the derrick 500.

[0154] The 310 slag discharge pipes transfer the waste slag to the slag transfer platform 121. After the waste slag is loaded into the slag loading bucket 123, the slag loading bucket 123 is hoisted to the wellhead by the winch 122 to transfer the waste slag outside the well.

[0155] It should be noted that, as described above, after the slag discharge pipe 310 transports the waste slag to the top of the main beam 300, the waste slag can be transferred to the slag loading bucket 123. The slag loading bucket 123 is hoisted outside the well by the winch 122 and the slag is unloaded. Then the winch 122 hoists the slag loading bucket 123 back to the slag transfer platform 121 for the next round of waste slag transfer.

[0156] In some embodiments, the tunneling machine further includes a muck guide assembly 140, which includes at least two muck guide plates 141, which are inclinedly disposed on the top of the main shield 100.

[0157] The slag guide plate 141 guides the slag generated by the cutting tool 430 to the outside to prevent the slag from falling onto the main shield body 100 and / or the cutting arm device 200.

[0158] It should be noted that the number of slag guide plates 141 can be two, and there is no restriction here.

[0159] In some embodiments, the slag guiding assembly 140 further includes at least two third telescopic devices 142, one end of which is connected to the main shield 100 and the other end of which is connected to the slag guiding plate 141. The telescopic devices 142 extend and retract to adjust the tilt angle of the slag guiding plate 141.

[0160] For example, the third telescopic device 142 may be a third telescopic hydraulic cylinder, or alternatively, the third telescopic device 142 may be a linear motor.

[0161] It should be noted that the tilt angle of the guide plate 141 is adjusted by extending and retracting the third telescopic device 142, thereby enhancing the adaptability of the guide plate 141 and improving the guide plate efficiency.

[0162] In some embodiments, the slag guide assembly 140 further includes an extension plate 143 and a telescopic drive 144.

[0163] The telescopic drive component 144 is disposed on the slag guide plate 141, and the extension plate 143 is connected to the telescopic drive component 144 and is stacked on the slag guide plate 141.

[0164] The telescopic drive component 144 extends out, and the extension plate 143 is misaligned with the slag guide plate 141 to reduce the overlapping area.

[0165] For example, the telescopic drive component 144 is a telescopic drive cylinder; alternatively, the telescopic drive component 144 is a linear motor.

[0166] It should be noted that the outer surfaces of the extension plate 143 and the guide plate 141 are used for guiding waste. The extension plate 143 extends in the inclined direction of the guide plate 141. Preferably, in this embodiment, the extension plate 143 is stacked on the outer surface of the guide plate 141, so that waste will not fall into the gap between the two. One end of the telescopic drive member 144 is provided on the inner surface of the guide plate 141, and the other end is provided on the inner surface of the extension plate 143. The telescopic drive member 144 extends and retracts to adjust the extension amount of the extension plate 143 at the top of the guide plate 141, thereby changing the cumulative guiding area of ​​the extension plate 143 and the guide plate 141 for guiding waste, that is, reducing the overlapping area. It can be understood that the larger the guiding area, the less waste falls onto the main shield 100 and / or the cutting arm device 200, so as to effectively protect the main shield 100 and / or the cutting arm device 200.

[0167] In some embodiments, at least one mounting platform 150 is provided on the steel frame, and the mounting platform is used to place control units such as electrical system 160. The connection relationship between such control units and various components is used to control the start and stop of various components and the sequence of their actions. This is prior art and will not be described further.

[0168] Finally, after the shaft excavation is completed and all the segments 800 are installed, the entire tunneling machine exits the shaft. Concrete is then injected through the top of the topmost segment 800 to complete the one-time pouring of the concrete shaft wall, greatly saving the construction time of the concrete shaft wall.

[0169] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0170] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A shaft boring machine, characterized in that, It includes the main shield body (100), the cutting arm device (200), the main beam (300), the contour cutterhead (400), and the derrick (500). The main beam (300) is movably mounted on the derrick (500), the main shield (100) is mounted on one end of the main beam (300), and the cutting arm device (200) is mounted on the main shield (100). The cutting arm device (200) is used for the initial excavation of the well wall to form the initial well wall. The contour cutter head (400) includes a cutter head frame (410), at least one first telescopic device (420), at least one cutting tool (430), a first slewing bearing (440), and at least one first drive assembly (450). The first slewing bearing (440) is disposed on the main beam (300) and located above the cutting arm device (200). The cutter head frame (410) is disposed on the first slewing bearing (440). The first drive assembly (450) drives the cutter head frame (410) to rotate. The first telescopic device (420) is disposed on the cutter head frame (410), and the cutting tool (430) is disposed on the first telescopic device (420). The cutting tool (430) is configured such that the cutting surface of the cutting tool (430) is inclined, the first telescopic device (420) extends to apply the cutting tool (430) to the initial shaft wall, the cutter head frame (410) rotates to drive the cutting tool (430) to excavate the initial shaft wall, and an inverted conical sidewall adapted to the cutting tool (430) is formed on the sidewall of the initial shaft wall to form a secondary shaft wall; the outer sidewall of the segment (800) is inclined and adapted to the sidewall of the secondary shaft wall.

2. The shaft boring machine according to claim 1, characterized in that, The contour cutter head (400) also includes a first support device (470) and at least two second telescopic devices (460). The first support device (470) is movably mounted on the main beam (300). The cutter head frame (410), the first slewing bearing (440), and the first drive assembly (450) are all mounted on the first support device (470). One end of the second telescopic device (460) is connected to the first support device (470), and the other end is connected to the cutting arm device (200). The second telescopic device (460) extends and retracts to drive the first support device (470) to axially displace along the main beam (300).

3. The shaft boring machine according to claim 2, characterized in that, The first drive assembly (450) includes a first drive motor (451), a first gear ring (452), and at least one first bevel gear (453). The first drive motor (451) is disposed on the first support device (470), the first bevel gear (453) is connected to the output shaft of the first drive motor (451), the first gear ring (452) is disposed on the cutter head frame (410), and the first bevel gear (453) meshes with the first gear ring (452); The first drive motor (451) drives the cutter head frame (410) to rotate through the meshing transmission of the first bevel gear (453) and the first gear ring (452).

4. The shaft boring machine according to claim 2, characterized in that, The contour cutter head (400) further includes a first parking mechanism (480), which includes a first parking telescopic member (481) and a first friction plate (482) disposed on the first parking telescopic member (481). The first parking telescopic member (481) is disposed on the first support device (470), and the first friction plate (482) is disposed on the first parking telescopic member (481). The first parking telescopic member (481) extends to drive the first friction plate (482) to move toward the cutter head frame (410). The first friction plate (482) contacts the cutter head frame (410) to generate frictional resistance, thereby stopping the cutter head frame (410).

5. The shaft boring machine according to claim 1, characterized in that, The contour cutter head (400) also includes at least one multi-stage telescopic frame (490), which is disposed on the cutter head frame (410) and one end of which is connected to the cutter (430). The multi-stage telescopic frame (490) extends and retracts synchronously with the first telescopic device (420).

6. The shaft boring machine according to claim 1, characterized in that, It also includes a front support device (600), which includes at least two main support shoes (610). The main support shoe (610) is telescopically mounted on the main shield body (100). The main support shoe (610) is configured to support the initial shaft wall to provide support and fixation for the excavation of the cutting arm device (200).

7. The shaft boring machine according to claim 1, characterized in that, It also includes a segment installation device (700), which includes a telescopic lifting platform (710), a segment assembler (720), and multiple segment fixers (760). The telescopic hanging plate (710) is disposed on the main beam (300), the telescopic hanging plate (710) extends and retracts radially along the main beam (300), the telescopic hanging plate (710) is located above the contour cutterhead (400), and the segment fixer (760) is disposed on the telescopic hanging plate (710); The segment assembler (720) includes a rotary frame (721), at least two radial cylinders (722), a suction cup (723), a second slewing bearing (724), and a second drive assembly (725). The second slewing bearing (724) is disposed on the main beam (300), the rotary frame (721) is disposed on the second slewing bearing (724), and the rotary frame (721) is located above the telescopic lifting platform (710). The radial cylinders (722) are disposed on the rotary frame (721), the suction cup (723) is disposed on the radial cylinders (722), and the second drive assembly (725) acts on the rotary frame (721) to drive the rotary frame (721) to rotate. The telescopic boom (710) extends to transport the segment (800) to the secondary wellbore to a designated position. The radial cylinder (722) drives the suction cup (723) to pick up the segment (800) and install the segment (800) onto the secondary wellbore. The segment retainer (760) acts on the segment (800) on the secondary wellbore to temporarily fix the segment (800).

8. The shaft boring machine according to claim 7, characterized in that, The segment fixer (760) includes a first telescopic fixer (761) and a second telescopic fixer (762). One end of the first telescopic fixer (761) is hinged to the telescopic hanging plate (710), and the other end is a free end. One end of the second telescopic fixer (762) is hinged to the telescopic hanging plate (710), and the other end is hinged to the first telescopic fixer (761). The second telescopic retainer (762) extends to lift the free end of the first telescopic retainer (761), the free end of the first telescopic retainer (761) extending and abutting against the segment (800) on the secondary wellbore to temporarily fix the segment (800).

9. The shaft boring machine according to claim 7, characterized in that, The segment assembler (720) also includes a second support device (728) and at least two fourth telescopic devices (727). The second support device (728) is movably disposed on the main beam (300), the slewing frame (721), the second slewing bearing (724) and the second drive assembly (725) are disposed on the second support device (728), and the second drive assembly (725) is disposed on the second support device (728). The fourth telescopic device (727) is connected at one end to the second support device (728) and at the other end to the main beam (300). The fourth telescopic device (727) extends and retracts to drive the second support device (728) to move axially along the main beam (300).

10. The shaft boring machine according to claim 9, characterized in that, The second drive assembly (725) includes a second drive motor (7251), a second gear ring (7252), and at least one second bevel gear (7253). The second drive motor (7251) is disposed on the second support device (728), the second bevel gear (7253) is connected to the output shaft of the second drive motor (7251), and the second gear ring (7252) is disposed on the rotary frame (721). The second bevel gear (7253) meshes with the second gear ring (7252). The second drive motor (7251) drives the rotary frame (721) to rotate through the meshing transmission of the second bevel gear (7253) and the second gear ring (7252).

11. The shaft boring machine according to claim 9, characterized in that, The segment installation device (700) further includes a second parking mechanism (750), which includes a second parking telescopic member (751) and a second friction plate (752) disposed on the second parking telescopic member (751). The second parking telescopic member (751) is disposed on the second support device (728), and the second friction plate (752) is disposed on the second parking telescopic member (751). The second friction plate (752) is configured such that the second parking telescopic member (751) extends to drive the second friction plate (752) to move toward the rotary frame (721), and the second friction plate (752) contacts the rotary frame (721) to generate frictional resistance to stop the rotary frame (721).

12. The shaft boring machine according to any one of claims 7-11, characterized in that, The segment assembler (720) also includes a telescopic frame (730) and two first fine-tuning cylinders (729). One end of the telescopic frame (730) is connected to the rotary frame (721), and the other end is connected to the suction cup (723). The telescopic frame (730) is used to extend and retract with the radial cylinder (722) to support the suction cup (723). At the same horizontal height as the telescopic frame (730), two first fine-tuning cylinders (729) are each set on one side of the telescopic frame (730). One end of the first fine-tuning cylinder (729) is connected to the telescopic frame (730), and the other end is connected to the suction cup (723). And / or, the segment assembler (720) further includes a second fine-tuning cylinder (726), which is located below the telescopic frame (730). One end of the second fine-tuning cylinder (726) is connected to the telescopic frame (730), and the other end is connected to the suction cup (723).

13. The shaft boring machine according to claim 7, characterized in that, It also includes a rear support shoe device (900), which includes a support shoe frame (910), at least one support shoe cylinder (920), at least one support shoe body (930), and at least two fifth telescopic devices (940). The support shoe frame (910) is movably mounted on the main beam (300) and is located above the rotary frame (721). One end of the support shoe cylinder (920) is mounted on the support shoe frame (910), and the support shoe body (930) is connected to the other end of the support shoe cylinder (920). One end of the fifth telescopic device (940) is connected to the support shoe frame (910), and the other end is connected to the main beam (300). The fifth telescopic device (940) extends and retracts to drive the boot support frame (910) to move axially along the main beam (300); After the secondary wellbore completes the ring assembly of the segment (800), the support shoe cylinder (920) extends to drive the support shoe body (930) to abut against and support at least a portion of the segment (800) of the secondary wellbore.

14. The shaft boring machine according to claim 7, characterized in that, It also includes a top loading device (110), which includes a top lifting platform (111), an auxiliary crane (112), and a segment box (113). The top hanging platform (111) is erected on the top of the main beam (300), and the auxiliary crane (112) is set on the top hanging platform (111). After the segment (800) is installed into the segment box (113), the segment box (113) containing the segment (800) is lifted to the telescopic hanging platform (710) by the auxiliary crane (112).

15. The shaft boring machine according to claim 14, characterized in that, It also includes a walking platform (130), which is movably mounted on the main beam (300). After the segment box (113) containing the segment (800) is hoisted to the telescopic platform (710), the walking platform (130) transports the operator to the telescopic platform (710), where the operator dismantles the segment box (113).

16. The shaft boring machine according to claim 1, characterized in that, A slag discharge pipe (310) is provided in the middle of the main beam (300). One end of the slag discharge pipe (310) is connected to the cutting arm device (200), and the other end is arranged to the top of the main beam (300).

17. The shaft boring machine according to claim 16, characterized in that, It also includes a slag transport device (120), which includes a slag transfer platform (121), a winch (122) and a slag loading bucket (123). The slag transfer platform (121) is located on the top of the main beam (300), and the winch (122) is located on the derrick (500). The slag discharge pipe (310) transfers the waste slag to the slag transfer platform (121). After the waste slag is loaded into the slag loading bucket (123), the slag loading bucket (123) is hoisted to the wellhead by the winch (122) to transfer the waste slag outside the well.

18. The shaft boring machine according to claim 1, characterized in that, It also includes a slag guiding assembly (140), which includes at least two slag guiding plates (141) that are obliquely disposed on the top of the main shield body (100); The guide plate (141) guides the waste generated by the cutting tool (430) to discharge it to the outside, preventing the waste from falling onto the main shield (100) and / or the cutting arm device (200).

19. The shaft boring machine according to claim 18, characterized in that, The slag guiding assembly (140) also includes at least two third telescopic devices (142), one end of which is connected to the main shield (100) and the other end is connected to the slag guiding plate (141). The telescopic devices (142) extend and retract to adjust the tilt angle of the slag guiding plate (141).

20. The shaft boring machine according to claim 18 or 19, characterized in that, The slag guiding assembly (140) also includes an extension plate (143) and a telescopic drive (144). The telescopic drive member (144) is disposed on the slag guide plate (141), and the extension plate (143) is connected to the telescopic drive member (144) and stacked on the slag guide plate (141). The telescopic drive (144) extends out, and the extension plate (143) is misaligned with the slag guide plate (141) to reduce the overlapping area.

Images