A TBM main beam support and propulsion device capable of supporting tunnel walls in multiple directions

Abstract

The present application relates to open TBM technical field, specifically relates to a kind of TBM main beam support propelling device of multi-direction bracing tunnel wall, the device includes main beam, saddle frame, rear support, first support shoe, first telescopic driver and first propeller;Saddle frame is installed on main beam;Main beam is connected from the inside of saddle frame and rear support after being out;First telescopic driver is set on saddle frame;First support shoe is set on the upper side or lower side of saddle frame;First telescopic driver is connected with first support shoe, to be able to drive first support shoe along vertical direction to lift;One end of first propeller is hinged with main beam, and the other end is connected with saddle frame;First propeller can drive saddle frame to move along transverse direction.Set first support shoe on the upper side or lower side of saddle frame, exert excavating driving force through the top surface and bottom surface of tunnel wall, can ignore the interval between left side and right side of tunnel wall, can well adapt to left and right tunnel wall local collapse or meet the working condition of Y-shaped tunnel secondary initiation, effectively guarantee the bracing strength of first support shoe and tunnel wall.

Description

Technical Field

[0001] This invention relates to the field of open-type TBM technology, and more specifically to a TBM main beam support and propulsion device that can brace the tunnel wall in multiple directions. Background Technology

[0002] Full-face tunnel boring machines (TBMs) are widely used due to their high construction efficiency, safety and environmental friendliness, high degree of mechanization, and low labor intensity. In the field of hard rock tunnels, open-face TBMs are widely used because of their faster tunneling speed, flexible initial support and pre-treatment methods, and lower overall cost. Open-face TBMs mainly rely on the main beam support propulsion system to provide propulsion power, which is provided by the main thrust cylinder. The left and right support shoes tighten the tunnel wall to provide reaction force for the main excavator. Therefore, if the support shoes of the main beam support propulsion system cannot tighten the tunnel wall, the entire machine will be unable to advance normally.

[0003] Currently, almost all open-type TBM main beam support and propulsion devices have their support shoes arranged symmetrically on both sides. If there is partial collapse of the left or right tunnel walls, or if a second excavation is required for a Y-shaped tunnel, the support shoes will become ineffective. Specifically, when using the TBM method to construct a Y-shaped tunnel, after excavating the first tunnel, the TBM main beam support and propulsion device needs to be retracted to the intersection of the Y-shaped tunnels, i.e., the main tunnel, before a second excavation of the second tunnel on the other side of the main tunnel can begin. Since the first tunnel has already been excavated at the main tunnel location, the support shoes will struggle to reach the tunnel walls when excavating the second tunnel. This is because the TBM main beam support and propulsion device needs to adjust the axis of the main beam to the excavation direction of the second tunnel; therefore, the support shoes located on the left or right side of the main beam will extend into the first tunnel and become unsupported. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a TBM main beam support and propulsion device that can support the tunnel wall in multiple directions, which solves the technical problem that the support shoes of the existing TBM main beam support and propulsion devices have poor support strength when the left and right tunnel walls collapse locally or when encountering a secondary start in a Y-shaped tunnel.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the TBM main beam support and propulsion device of the present invention, which can support the tunnel wall in multiple directions, includes a main beam, a saddle, a rear support, a first support shoe, a first telescopic driver, and a first propeller.

[0008] The saddle frame is mounted on the main beam; the main beam passes through the interior of the saddle frame and connects to the rear support;

[0009] The first telescopic actuator is disposed on the saddle frame; the first support shoe is disposed on the upper or lower side of the saddle frame; the first telescopic actuator is connected to the first support shoe so as to drive the first support shoe to move vertically up and down;

[0010] One end of the first thruster is hinged to the main beam, and the other end is connected to the saddle; the first thruster can drive the saddle to move laterally.

[0011] Optionally, a pair of first support boots are disposed on the upper and lower sides of the saddle frame in a one-to-one correspondence;

[0012] The two ends of the first telescopic driver are connected to a pair of first support shoes in a one-to-one correspondence; or a pair of first telescopic drivers are connected to a pair of first support shoes in a one-to-one correspondence.

[0013] Optionally, the saddle frame includes an upper square frame, a middle square frame, and a lower square frame connected in sequence;

[0014] The top of the upper square frame and the top of the lower square frame are each provided with a pair of mirror-shaped first support shoes.

[0015] The first thruster is installed at each of the four corners of the saddle frame.

[0016] Optionally, the middle square frame has a support hole inside; the main beam passes through the support hole, and the two are slidably connected in the lateral direction;

[0017] Corner retaining strips are provided at the four corners of the support hole; L-shaped slots are provided at the four corners of the main beam; the corner retaining strips and the L-shaped slots are slidably connected laterally.

[0018] Optionally, an upper crossbeam of the upper square frame is provided above the support hole; and a lower crossbeam of the lower square frame is provided below the support hole.

[0019] A pair of the first thrusters are connected one-to-one to the middle of the upper crossbeam and the middle of the lower crossbeam.

[0020] Optionally, the TBM main beam support propulsion device further includes a second telescopic actuator, a pair of second support shoes, and a pair of second propellers;

[0021] A pair of second support boots are correspondingly arranged on the left and right sides of the saddle frame; the second telescopic actuator is longitudinally arranged inside the saddle frame; the two ends of the second telescopic actuator are correspondingly connected to a pair of second support boots.

[0022] One end of the second thruster is hinged to the main beam, and the other end is hinged to the second support shoe; a pair of second thrusters are arranged on the left and right sides of the main beam in a one-to-one correspondence.

[0023] Optionally, a top plate is provided on the side of the upper square frame facing the second support shoe;

[0024] The top of the upper plate can abut against the bottom of the first support shoe; the bottom of the upper plate is provided with a clearance groove, and the second telescopic driver passes through the clearance groove;

[0025] The lower square frame has a lower top plate on the side facing the second support shoe; the upper top plate and the lower top plate are mirror images of each other.

[0026] Optionally, the rear support includes a frame, outriggers, a support actuator, and a steering actuator;

[0027] The frame is positioned above the support leg;

[0028] One end of the support actuator is hinged to the frame, and the other end is connected to the support leg; the support actuator can drive the support leg to move vertically up and down.

[0029] The steering actuator is arranged longitudinally; one end of the steering actuator is hinged to the frame and the other end is hinged to the support leg, so as to drive the main beam to turn to its left or right.

[0030] Optionally, the outrigger includes a connecting beam and a pair of feet;

[0031] A pair of the aforementioned legs are respectively disposed on both sides of the bottom end of the connecting beam; a pair of the aforementioned support actuators are respectively disposed on the left and right sides of the frame; the support actuators are connected to the connecting beam, or the support actuators pass through the connecting beam and are connected to the legs.

[0032] The steering actuator is hinged to the connecting beam; a pair of steering actuators are arranged on the front and rear sides of the connecting beam in a one-to-one correspondence.

[0033] Optionally, the rear support further includes a guide plate disposed on the inner side of the pair of legs; the guide plate is disposed at the bottom end of the frame; the guide plate passes through the connecting beam, and the two are slidably connected longitudinally.

[0034] (III) Beneficial Effects

[0035] The beneficial effects of this invention are:

[0036] The first telescopic actuator is connected to the first support shoe, enabling it to move vertically up and down, thereby supporting the top and bottom surfaces of the tunnel wall (tunnel). The top and bottom surfaces of the tunnel wall then fix the TBM main beam support and propulsion device, allowing the top and bottom surfaces of the tunnel wall to apply an axial reaction force to the main beam when the first propeller extends, providing the main machine with tunneling thrust. Compared to the traditional method of setting support shoes on the left and right sides of the saddle, this invention sets the first support shoe on the upper or lower side of the saddle, applying tunneling thrust through the top and bottom surfaces of the tunnel wall. Therefore, it can disregard the distance between the left and right sides of the tunnel wall, effectively adapting to situations such as partial collapse of the left and right tunnel walls or secondary starting in Y-shaped tunnels, effectively ensuring the support strength between the first support shoe and the tunnel wall, and improving the stability of the main machine's tunneling thrust. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the TBM main beam support and propulsion device that can support the tunnel wall in multiple directions according to the present invention;

[0038] Figure 2 This is a front view of the TBM main beam support and propulsion device of the present invention, which can support the tunnel wall in multiple directions;

[0039] Figure 3 This is a front view of the saddle frame of the present invention;

[0040] Figure 4 This is a side view of the saddle frame of the present invention;

[0041] Figure 5 This is a schematic diagram of the rear support structure of the present invention;

[0042] Figure 6 This is a side view of the rear support of the present invention.

[0043] [Explanation of Labels in the Attached Image]

[0044] 1: Main beam; 11: L-shaped slot;

[0045] 2: Saddle frame; 21: Upper square frame; 211: Upper crossbeam; 212: Upper top plate; 2121: Clearance slot; 22: Middle square frame; 221: Support hole; 222: Corner retaining strip; 23: Lower square frame; 231: Lower crossbeam; 232: Lower top plate;

[0046] 3: Rear support; 31: Frame; 32: Leg; 321: Connecting beam; 322: Foot; 33: Support actuator; 34: Orientation actuator; 35: Guide plate;

[0047] 4: First boot support;

[0048] 5: First telescopic actuator;

[0049] 6: First thruster;

[0050] 7: Second telescopic actuator;

[0051] 8: Second boot;

[0052] 9: Second thruster. Detailed Implementation

[0053] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0055] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In the first embodiment, see Figure 1 and Figure 2This invention provides a TBM main beam support and propulsion device capable of multi-directionally supporting tunnel walls. The TBM main beam support and propulsion device includes a main beam 1, a saddle frame 2, a rear support 3, a first support shoe 4, a first telescopic actuator 5, and a first thruster 6. The saddle frame 2 is mounted on the main beam 1. The main beam 1 passes through the interior of the saddle frame 2 and connects to the rear support 3. The first telescopic actuator 5 is disposed on the saddle frame 2. The first support shoe 4 is disposed on the upper or lower side of the saddle frame 2. The first telescopic actuator 5 is connected to the first support shoe 4 to drive the first support shoe 4 to move vertically. One end of the first thruster 6 is hinged to the main beam 1, and the other end is connected to the saddle frame 2. The first thruster 6 can drive the saddle frame 2 to move laterally. Here, lateral refers to the axial direction of the main beam 1, i.e., the front-to-back direction; longitudinal refers to the axial direction of the second telescopic actuator 7, i.e., the left-to-right direction; and vertical refers to the axial direction of the support actuator 33, i.e., the up-and-down direction.

[0058] The front end of the main beam 1 is connected to the main drive of the main machine, transmitting the propulsion force to the cutterhead at the front of the tunnel. Simultaneously, the main beam 1 also serves as a support bracket for the entire TBM main beam propulsion device. The rear support 3 is installed at the tail of the main beam 1 and connected to it by bolts. The rear support 3 cooperates with the saddle 2 to support the main beam 1. The telescopic actuator and propeller of this invention can be selected from pneumatic cylinders, hydraulic cylinders, or electric push rods.

[0059] The first telescopic actuator 5 is connected to the first support shoe 4, enabling the first support shoe 4 to move vertically up and down, thereby supporting the top and bottom surfaces of the tunnel wall (tunnel). The top and bottom surfaces of the tunnel wall fix the TBM main beam support and propulsion device, allowing the top and bottom surfaces of the tunnel wall to apply an axial reaction force to the main beam 1 when the first thruster 6 extends, providing tunneling propulsion force for the main machine. Compared to the traditional method of setting support shoes on the left and right sides of the saddle, this invention sets the first support shoe 4 on the upper or lower side of the saddle 2, applying tunneling propulsion force through the top and bottom surfaces of the tunnel wall. Therefore, it can disregard the distance between the left and right sides of the tunnel wall, effectively adapting to conditions such as partial collapse of the left and right tunnel walls or secondary starting in a Y-shaped tunnel, effectively ensuring the support strength between the first support shoe 4 and the tunnel wall, and improving the stability of the main machine's tunneling propulsion force.

[0060] In the second embodiment, a pair of first support shoes 4 are correspondingly arranged on the upper and lower sides of the saddle frame 2, and can be positioned at the center of the top and bottom of the saddle frame 2 to improve the stability of the support; the two ends of the first telescopic actuator 5 are correspondingly connected to the pair of first support shoes 4; or the pair of first telescopic actuators 5 are correspondingly connected to the pair of first support shoes 4. In this embodiment, first support shoes 4 are provided on both the upper and lower sides of the saddle frame 2 to improve the flexibility of the first support shoes 4 in supporting the tunnel wall, shorten the support time of the first support shoes 4, and improve the tunneling efficiency. One first telescopic actuator 5 can synchronously drive a pair of first support shoes 4 to improve the synchronicity of the operation of the pair of first support shoes 4 and reduce the number of first telescopic actuators 5 installed, saving construction costs. Alternatively, one first telescopic actuator 5 can drive one first support shoe 4, so that the first support shoe 4 can swing vertically, improving the adaptability of the first support shoe 4 to supporting different tunnel wall shapes, improving the flexibility of the support, and effectively avoiding the situation where the end face of the first support shoe 4 does not sufficiently contact the tunnel wall surface, thus affecting the support strength. Of course, when the first support shoe 4 is vertically adjusted and oscillating, the first support shoe 4 needs to be hinged to the first telescopic driver 5.

[0061] In the third embodiment, as Figure 3 and Figure 4 As shown, the saddle frame 2 includes an upper square frame 21, a middle square frame 22, and a lower square frame 23 connected in sequence. A pair of mirror-image first support shoes 4 are provided at the top of both the upper square frame 21 and the lower square frame 23. First telescopic actuators 5 are provided at each of the four corners of the saddle frame 2. In this embodiment, the saddle frame 2 is H-shaped or ladder-shaped, with a total of four first support shoes 4. One pair of first support shoes 4 is mirror-image positioned at the top of the saddle frame 2, and another pair is mirror-image positioned at the bottom of the saddle frame 2. First telescopic actuators 5 are provided at each of the four corners of the saddle frame 2. The two ends of one first telescopic actuator 5 are connected to two first support shoes 4 positioned on the upper and lower sides respectively. This allows for both synchronous extension and retraction of the upper and lower first support shoes 4, as well as vertical swinging of the first support shoes 4, offering the advantages of saving construction costs and improving the flexibility of the support.

[0062] Furthermore, the middle square frame 22 has a support hole 221 inside; the main beam 1 passes through the support hole 221 and the two are slidably connected in the lateral direction; corner clips 222 are provided at the four corners of the support hole 221; L-shaped slots 11 are provided at the four corners of the main beam 1; the corner clips 222 and the L-shaped slots 11 are slidably connected in the lateral direction. Specifically, the L-shaped slots 11 are correspondingly set on the two vertical surfaces of the main beam 1, and the corner clips 222 are correspondingly set on the two vertical surfaces of the support holes 221. The projection of the main beam 1 on its longitudinal section is cross-shaped. The corner clips 222 can be regarded as protrusions on the wall of the support holes 221, so that the protrusions of the main beam 1 can be correspondingly inserted into the adjacent protrusions on the same side of the support holes 221. That is, the protrusions of the main beam 1 and the wall of the support holes 221 are slidably connected in the lateral direction, and the L-shaped slots 11 of the main beam 1 and the corner clips 222 are slidably connected in the lateral direction to form a cross sliding connection structure, which effectively improves the connection strength and service life of the four corners of the main beam 1 and improves the reliability of the rear support 3 in adjusting the steering of the main beam 1.

[0063] Optionally, a bent baffle is provided at the end of the L-shaped slot 11. The bent baffle can abut against the corner clip 222 so that the saddle 2 can limit the lateral sliding of the main beam 1 and improve the construction safety of the TBM main beam support propulsion device.

[0064] Secondly, an upper crossbeam 211 of the upper square frame 21 is provided above the support hole 221; a lower crossbeam 231 of the lower square frame 23 is provided below the support hole 221; and a pair of first pushers 6 are connected to the middle of the upper crossbeam 211 and the middle of the lower crossbeam 231 respectively. Figure 4 The circles shown above and below the central support hole 221 are the connection nodes between the first thruster 6 and the crossbeam. Placing the connection nodes at the center of the crossbeam effectively improves the stability of the thrust. The components of the saddle 2 are tightly connected and highly integrated.

[0065] In the fourth embodiment, the TBM main beam support and propulsion device further includes a second telescopic actuator 7, a pair of second support shoes 8, and a pair of second thrusters 9; the pair of second support shoes 8 are correspondingly arranged on the left and right sides of the saddle frame 2; the second telescopic actuator 7 is longitudinally arranged inside the saddle frame 2; both ends of the second telescopic actuator 7 are correspondingly connected to the pair of second support shoes 8; one end of the second thruster 9 is hinged to the main beam 1, and the other end is hinged to the second support shoe 8; the pair of second thrusters 9 are correspondingly arranged on the left and right sides of the main beam 1. The top support principle of the left and right support shoes is the same as that of the upper and lower support shoes, and will not be described again. In this embodiment, in addition to the upper and lower support shoes, left and right support shoes are added to form two sets of top support systems that can operate independently or simultaneously. This greatly improves the support strength of the TBM main beam support and propulsion device on the tunnel wall, as well as the flexibility of supporting the tunnel wall in all directions. It not only enhances the support strength on the basis of the existing TBM main beam support and propulsion device (when both sets of top support systems are used at the same time), but also can well adapt to the working conditions of partial collapse of the left and right tunnel walls or secondary starting of Y-shaped tunnels (when the upper and lower top support systems are used).

[0066] When one jacking system malfunctions, another can be immediately used, improving operational efficiency. If two jacking systems encounter unfavorable geological conditions or jamming, both systems can operate simultaneously to extricate the operator from trouble.

[0067] Furthermore, an upper top plate 212 is provided on the side of the upper square frame 21 facing the second support shoe 8; the top of the upper top plate 212 can abut against the bottom surface of the first support shoe 4; a clearance groove 2121 is opened at the bottom of the upper top plate 212, through which the second telescopic actuator 7 passes; a lower top plate 232 is provided on the side of the lower square frame 23 facing the second support shoe 8; the upper top plate 212 and the lower top plate 232 are mirror images of each other. Specifically, the top surface of the upper top plate 212 is higher than the top retraction height of the first telescopic actuator 5, to ensure that the top surface of the upper top plate 212 can limit the lowest descent position of the first support shoe 4, effectively protecting the first telescopic actuator 5 and extending its service life. The clearance groove 2121 at the bottom of the upper top plate 212 is used to clear the second telescopic actuator 7 and the second support shoe 8 in the retracted state. Corresponding components are evenly distributed inside and on all four sides of the saddle frame 2, with high integration, optimizing the equipment structure and effectively reducing the footprint of the TBM main beam support propulsion device. The same applies to the lower top plate 232, so I will not repeat it here.

[0068] See Figure 5 and Figure 6The rear support 3 includes a frame 31, outriggers 32, a support actuator 33, and a steering actuator 34. The frame 31 is positioned above the outriggers 32. One end of the support actuator 33 is hinged to the frame 31, and the other end is connected to the outriggers 32. The support actuator 33 can drive the outriggers 32 to move vertically up and down. The steering actuator 34 is positioned longitudinally. One end of the steering actuator 34 is hinged to the frame 31, and the other end is hinged to the outriggers 32, enabling it to drive the main beam 1 to turn to its left or right. Specifically, the support actuator 33 adjusts the height of the rear end of the frame 31, i.e., the main beam 1. The steering actuator 34 makes a small adjustment to the longitudinal orientation of the frame 31, i.e., the main beam 1, allowing the main beam 1 to turn to the left or right of the tunnel wall, thus improving the construction flexibility of the TBM main beam support and propulsion device.

[0069] It should be noted that the saddle frame 2 will also rotate during the steering adjustment of the rear support 3. In this embodiment, the hinge points of the left and right support shoes and the upper and lower support shoes are all ball joint structures. Therefore, the support shoes can adaptively abut against the tunnel wall when the saddle frame 2 rotates, and the steering range of the rear support 3 is not large, which can ensure the stability of the steering adjustment of the rear support 3.

[0070] Furthermore, the outrigger 32 includes a connecting beam 321 and a pair of feet 322; the pair of feet 322 are correspondingly arranged on both sides of the bottom end of the connecting beam 321; a pair of support actuators 33 are correspondingly arranged on the left and right sides of the frame 31; the support actuators 33 are connected to the connecting beam 321, or the support actuators 33 pass through the connecting beam 321 and are connected to the feet 322; the steering actuators 34 are hinged to the connecting beam 321; a pair of steering actuators 34 are correspondingly arranged on the front and rear sides of the connecting beam 321. Specifically, the outrigger 32 is configured as a U-shaped structure, with a pair of support actuators 33 and a pair of steering actuators 34 correspondingly arranged on the four sides of the rear support 3, resulting in high integration and effectively ensuring the operational stability of the support actuators 33 and steering actuators 34.

[0071] Optionally, the end faces of the first support shoe 4, the second support shoe 8, and the support leg 322 are all configured as curved surfaces. Taking the first support shoe 4 as an example, when the first support shoe 4 abuts against the top and / or bottom surface of the tunnel wall, the tunnel wall surface can enhance the longitudinal reaction force applied to the first support shoe 4, thereby ensuring the stability of the first support shoe 4 and improving the reliability of the rear support 3 in adjusting the steering of the main beam 1. Therefore, the curved surface can increase the force direction of the first support shoe 4, the second support shoe 8, and the support leg 322, thereby improving the stability of the top support.

[0072] Secondly, the rear support 3 also includes guide plates 35 disposed inside a pair of legs 322; the guide plates 35 are disposed at the bottom end of the frame 31; the guide plates 35 pass through the connecting beam 321, and the two are slidably connected longitudinally. In this embodiment, the pair of guide plates 35 are disposed inside a pair of legs 322, and the space occupied by the guide plates 35 is small. A corresponding groove is provided on the connecting beam 321, which can guide the longitudinal sliding of the guide plates 35 without affecting the vertical lifting and lowering of the guide plates 35, and prevent the frame 31 from moving in the front-to-back direction, effectively improving the stability of the rear support 3 during steering adjustment.

[0073] Under normal working conditions, the TBM main beam support and propulsion device of the present invention uses the left and right support shoes to support the tunnel wall to provide the main machine with the tunneling propulsion force. The directional drive 34 on the rear support 3 is locked, and the main machine is driven to tunnel in the conventional mode of open TBM.

[0074] When the left and right support shoes cannot hold the left and right tunnel walls tightly, the left and right support shoes retract, and the second thruster 9 remains in a depressurized follow-up state; the first telescopic driver 5 extends, so that the upper and lower support shoes hold the upper and lower tunnel walls tightly, providing a counter-thrust force for the cutterhead excavation; the first thruster 6 replaces the second thruster 9 to advance, providing a driving force for the cutterhead excavation.

[0075] In addition, the TBM main beam support propulsion device can also adjust the direction of the main unit. The outrigger 32 is supported on the bottom surface of the tunnel wall by the support driver 33. The forward direction of the main unit can be slightly changed by controlling the extension and retraction of the adjustment driver 34.

[0076] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A TBM main beam support propulsion device that can multi-directionally tension a tunnel wall, characterized by, The TBM main beam support propulsion device comprises a main beam (1), a saddle frame (2), a rear support (3), a first support shoe (4), a first telescopic driver (5) and a first propeller (6); The saddle frame (2) is installed on the main beam (1); the main beam (1) passes out from the inside of the saddle frame (2) and is connected with the rear support (3); The first telescopic driver (5) is arranged on the saddle frame (2); the first support shoe (4) is arranged on the upper side or the lower side of the saddle frame (2); the first telescopic driver (5) is connected with the first support shoe (4) to drive the first support shoe (4) to vertically ascend and descend; One end of the first propeller (6) is hinged with the main beam (1), and the other end is connected with the saddle frame (2); the first propeller (6) can drive the saddle frame (2) to move horizontally; The inside of the saddle frame (2) is provided with a support hole (221); the main beam (1) penetrates through the support hole (221), and the two are connected in transverse sliding mode; four corner clamping strips (222) are arranged at the four corners of the support hole (221); four L-shaped clamping grooves (11) are arranged at the four corners of the main beam (1) to make the projection of the main beam (1) on the longitudinal section thereof in cross shape; the corner clamping strips (222) and the L-shaped clamping grooves (11) are connected in transverse sliding mode; The rear support (3) can drive the main beam (1) to turn to the left or the right of itself.

2. The TBM main beam support propulsion device that can multidirectionally tension a tunnel wall according to claim 1, wherein, A pair of the first support shoes (4) are arranged on the upper and lower sides of the saddle frame (2) in one-to-one correspondence; The two ends of the first telescopic driver (5) are connected with a pair of the first support shoes (4) in one-to-one correspondence; or a pair of the first telescopic drivers (5) are connected with a pair of the first support shoes (4) in one-to-one correspondence.

3. The TBM main beam support propulsion device that can multidirectionally tension the tunnel wall according to claim 1, wherein, The saddle frame (2) comprises an upper square frame (21), a middle square frame (22) and a lower square frame (23) connected in sequence; The top end of the upper square frame (21) and the top end of the lower square frame (23) are provided with a pair of mirror image first support shoes (4); The four corners of the saddle frame (2) are provided with the first telescopic drivers (5).

4. The TBM main beam support propulsion device that can multidirectionally tension the tunnel wall according to claim 3, wherein, The upper transverse beam (211) of the upper square frame (21) is arranged above the support hole (221); the lower transverse beam (231) of the lower square frame (23) is arranged below the support hole (221); A pair of the first propellers (6) are connected with the middle part of the upper transverse beam (211) and the middle part of the lower transverse beam (231) in one-to-one correspondence.

5. The TBM main beam support propulsion device of claim 3, wherein, The TBM main beam support propulsion device further comprises a second telescopic driver (7), a pair of second support shoes (8) and a pair of second propellers (9); A pair of the second support shoes (8) are arranged on the left and right sides of the saddle frame (2) in one-to-one correspondence; the second telescopic driver (7) is arranged in the inside of the saddle frame (2) in longitudinal mode; the two ends of the second telescopic driver (7) are connected with a pair of the second support shoes (8) in one-to-one correspondence; One end of the second propeller (9) is hinged to the main beam (1), and the other end is hinged to the second supporting shoe (8); a pair of the second propellers (9) are arranged on the left and right sides of the main beam (1) in a one-to-one correspondence.

6. The TBM main beam support propulsion device that can multidirectionally tension a tunnel wall according to claim 5, wherein, An upper top plate (212) is arranged on the side of the upper segment square frame (21) facing the second supporting shoe (8); The top end of the upper top plate (212) can abut against the bottom surface of the first supporting shoe (4); the bottom end of the upper top plate (212) is provided with an empty slot (2121), and the second telescopic driver (7) penetrates through the empty slot (2121); A lower top plate (232) is arranged on the side of the lower segment square frame (23) facing the second supporting shoe (8); the upper top plate (212) and the lower top plate (232) are arranged in a mirror image.

7. The TBM main beam support propulsion apparatus that can multidirectionally tension a tunnel wall according to any one of claims 1-6, characterized in that, The rear support (3) comprises a frame (31), a supporting leg (32), a support driver (33) and a direction adjusting driver (34); The frame (31) is arranged above the supporting leg (32); One end of the support driver (33) is hinged to the frame (31), and the other end is connected to the supporting leg (32); the support driver (33) can drive the supporting leg (32) to vertically ascend and descend; The direction adjusting driver (34) is arranged in a longitudinal direction; one end of the direction adjusting driver (34) is hinged to the frame (31), and the other end is hinged to the supporting leg (32), so as to drive the main beam (1) to turn to the left or right side of itself.

8. The TBM main beam support propulsion device that can multidirectionally tension a tunnel wall according to claim 7, wherein, The supporting leg (32) comprises a connecting beam (321) and a pair of supporting feet (322); A pair of the supporting feet (322) are arranged on the two sides of the bottom end of the connecting beam (321) in a one-to-one correspondence; a pair of the support drivers (33) are arranged on the left and right sides of the frame (31) in a one-to-one correspondence; the support driver (33) is connected to the connecting beam (321), or the support driver (33) penetrates through the connecting beam (321) and is connected to the supporting feet (322); The direction adjusting driver (34) is hinged to the connecting beam (321); a pair of the direction adjusting drivers (34) are arranged on the front and back sides of the connecting beam (321) in a one-to-one correspondence.

9. The TBM main beam support propulsion device that can multidirectionally tension a tunnel wall according to claim 8, wherein, The rear support (3) further comprises a guide plate (35) arranged on the inner side of a pair of the supporting feet (322); the guide plate (35) is arranged at the bottom end of the frame (31); the guide plate (35) penetrates through the connecting beam (321) and is connected to the connecting beam (321) in a longitudinal sliding manner.

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